CN106501711A

CN106501711A - Abort situation detection method, device, accumulator cell assembly and motor vehicles

Info

Publication number: CN106501711A
Application number: CN201610918307.9A
Authority: CN
Inventors: 窦国伟; 王英
Original assignee: Faraday Beijing Network Technology Co Ltd
Current assignee: Music eco automobile (Zhejiang) Co., Ltd.
Priority date: 2016-10-20
Filing date: 2016-10-20
Publication date: 2017-03-15
Anticipated expiration: 2036-10-20
Also published as: CN106501711B; CN108051748A

Abstract

The embodiment of the present invention provides a kind of abort situation detection method, device, accumulator cell assembly and motor vehicles, in such scheme, after detecting switch control module generation power-off failure failure under the instruction of lower forceful electric power, start setting to load and continue the first Preset Time, the terminal voltage changing value of the terminal voltage changing value for setting load and each battery strings is obtained in the first Preset Time, if the terminal voltage changing value of a certain battery strings has concordance with the terminal voltage changing value for setting load, it is determined that the corresponding contact switch failure of the battery strings.I.e. in the case where any sensor is not additionally increased, accurately and rapidly the location of faults such as sintering or adhesion can be determined using existing detection part in motor vehicle power system, significantly reduce maintenance time and cost.

Description

Abort situation detection method, device, accumulator cell assembly and motor vehicles

Technical field

The present invention relates to battery technology field, in particular to a kind of abort situation detection method, a kind of fault bit Put detection means, a kind of accumulator cell assembly and a kind of motor vehicles.

Background technology

The power system architecture schematic diagram of electric motor vehicle is illustrated in figure 1, accumulator body 100 includes an at least battery String 1001 and switch control module 1002.In figure by taking three battery strings 1001 as an example, each battery strings 1001 have independent connecing Switch 1003 is touched, three groups of contact switches 1003 together constitute switch control module 1002.When three groups of contact switches 1003 are closed During conjunction, each battery strings 1001 provide power by bus circuit to motor 104, hardware load (high pressure adnexa) 105 etc.. VMS101 (Vehicle Management System, vehicle management system) is broken to accumulator body 100 by BMS102 When electrically operated, the contact switch 1003 in each battery strings 1001 is disconnected under the lower forceful electric power instruction of BMS102 successively, and three groups connect Power operation is completed after tactile switch 1003 is all off.Contact switch 1003 in wherein any one battery strings 1001 occurs viscous Or sintering can all be such that corresponding battery strings 1001 effectively cannot disconnect to cause power-off failure event.And now BMS102 feedbacks are complete Operate into lower forceful electric power, then can produce many technological deficiencies.For example：

(1) driver or maintainer cannot know that power-off is recognized, there is Danger Electric shock risk.

(2) hardware load continues to work under high voltage bus, service life reduction.

(3) power accumulator continued power, service life reduction.

For this purpose, realizing the inspection of power-off failure in some prior arts by way of increasing sensor newly and adjusting BMS algorithms Survey.But for power-off failure guilty culprit particular location cannot be detected, cause the increase of maintenance time and cost.

Content of the invention

Present invention seek to address that at least one of technical problem present in prior art or correlation technique.

The embodiment of a first aspect of the present invention proposes a kind of abort situation detection method, comprises the steps：

After sending lower forceful electric power instruction, whether detection switch control module there is power-off failure failure；

If the switch control module occurs power-off failure failure, send and start the control instruction for setting load, and Send after first Preset Time and close the control instruction for setting load；

In first Preset Time, the end electricity of the terminal voltage changing value for setting load and each battery strings is obtained Pressure changing value；

If the difference of the terminal voltage changing value that the terminal voltage changing value of a certain battery strings is loaded with the setting is in threshold range Interior, it is determined that the corresponding contact switch failure of the battery strings；

Wherein, the lower forceful electric power is instructed and is disconnected for each contact switch controlled in the switch control module.

A kind of embodiment of a second aspect of the present invention, it is also proposed that abort situation detection means, including：

Fault determination module, after sending lower forceful electric power instruction, whether detection switch control module there is power-off failure failure；；

Load control module, if the switch control module occurs power-off failure failure, sends and starts setting load Control instruction, and the control instruction for closing the setting load is sent after the first Preset Time；

Data acquisition module, in first Preset Time, obtain described set load terminal voltage changing value and per The terminal voltage changing value of one battery strings；

Fault location module, if the terminal voltage changing value of a certain battery strings and described set load terminal voltage changing value it Difference is in threshold range, it is determined that the corresponding contact switch failure of the battery strings；

A kind of embodiment of a third aspect of the present invention, it is also proposed that accumulator cell assembly, including：

Hardware load；

Accumulator body, is connected with the hardware load by bus circuit, and which includes multiple battery strings, each battery strings Contact switch is in series between the bus circuit, all contact switches constitute switch control module；

Battery management module, is connected to the accumulator body, for controlling each institute in the switch control module State contact switch closure or disconnect；

Main control module, is connected to the battery management module and hardware load, under being obtained by the battery management module Forceful electric power completes to instruct, and is additionally operable to：

Under transmission after forceful electric power instruction, whether detection switch control module there is power-off failure failure；

A kind of embodiment of a fourth aspect of the present invention, it is also proposed that motor vehicles, fills including fault detect as above Put；Or accumulator cell assembly as above.

Above technical scheme described in the embodiment of the present invention, detects switch control module under the instruction of lower forceful electric power and occurs to break After electric failure of removal, start setting and load and continue the first Preset Time, described setting is obtained in the first Preset Time and is loaded Terminal voltage changing value and each battery strings terminal voltage changing value, if the terminal voltage changing value of a certain battery strings and the setting The terminal voltage changing value of load has concordance, it is determined that the corresponding contact switch failure of the battery strings.Additionally do not increasing In the case of any sensor, sintering can be accurately and rapidly determined using existing detection part in motor vehicle power system Or the location of fault such as adhesion, significantly reduce maintenance time and cost.

Description of the drawings

Fig. 1 is motor vehicle power system architecture schematic diagram；

Flow charts of the Fig. 2 for abort situation detection method described in one embodiment of the invention；

Fig. 3 is that battery strings one end voltage change is electric with bus described in one embodiment of the invention during one failure of battery strings The relation schematic diagram of wire-end voltage changing value；

Fig. 4 is the flow chart of abort situation detection method described in a specific example of the invention；

Fig. 5 is the original that bus circuit first voltage-Annual distribution information is sampled described in one embodiment of the invention Reason schematic diagram；

Flow charts of the Fig. 6 for abort situation detection method described in another embodiment of the present invention；

Fig. 7 is the whether method flow diagram of failure of detection switch control module described in one embodiment of the invention；

Fig. 8 is the whether method flow diagram of failure of detection switch control module described in a specific example of the invention；

Fig. 9 is the schematic flow diagram of the terminal voltage changing value for obtaining bus circuit described in a specific example of the invention；

Theory diagrams of the Figure 10 for abort situation detection means described in one embodiment of the invention；

Theory diagrams of the Figure 11 for fault determination module described in one embodiment of the invention；

Structural representations of the Figure 12 for accumulator cell assembly described in one embodiment of the invention；

Schematic block diagrams of the Figure 13 for motor vehicles described in one embodiment of the invention；

Figure 14 is the structural representation of the electronic equipment for executing abort situation detection method described in one embodiment of the invention.

Specific embodiment

In order to be more clearly understood that the above objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and concrete real Apply mode to be further described in detail the present invention.It should be noted that in the case where not conflicting, the enforcement of the application Feature in example and embodiment can be mutually combined.

A lot of details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used also Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below Specific embodiment restriction.

Embodiment 1

Abort situation detection method described in the present embodiment, is applied in vehicle management system, as shown in Fig. 2 including such as Lower step：

S201：After sending lower forceful electric power instruction, whether detection switch control module there is power-off failure failure, the lower forceful electric power Instruct and disconnect for each contact switch controlled in the switch control module.

S202：If the switch control module occurs power-off failure failure, send and start the control instruction for setting load, And the control instruction for closing the setting load is sent after the first Preset Time.Wherein, described setting is loaded as hardware load In one or more, such as high-pressure hydraulic pump, high-pressure fan；First Preset Time can be true according to the configuration of dynamical system Fixed, as far as possible short on the basis of fault location is able to ensure that in principle.

S203：In first Preset Time, the terminal voltage changing value for setting load and each battery strings are obtained Terminal voltage changing value.As shown in figure 1, hardware load 105 is connected to bus circuit, the terminal voltage for setting load is therefore obtained Changing value can be realized by the terminal voltage changing value of acquisition bus circuit.And the terminal voltage for obtaining bus circuit can pass through Carrying out, i.e. VMS receives what acquiring unit was obtained in real time to the acquiring unit with voltage acquisition function being connected with bus circuit The terminal voltage of bus circuit, and the terminal voltage changing value for setting load is calculated according to the terminal voltage of bus circuit；VMS Receive the terminal voltage value of the branch line circuit being serially connected between any battery string and bus circuit that acquiring unit is obtained in real time, and root According to the terminal voltage changing value that the terminal voltage value of the branch line circuit is calculated the battery strings.And acquiring unit can be adopted and bus electricity The BMS102 of road connection, MC103, hardware load 105 etc..In addition, in dynamical system, in the contact switch 1003 of battery strings, The sensor that can carry out voltage detecting is had been provided with hardware load 105, and VMS101 can obtain the detection of respective sensor As a result with the terminal voltage changing value needed for obtaining, such as VMS101 and respective sensor wirelessly realize data is activation with Receive, to obtain the terminal voltage value of battery strings and/or set the terminal voltage value of load.

S204：If the difference of the terminal voltage changing value that the terminal voltage changing value of a certain battery strings is loaded with the setting is in threshold value In the range of, it is determined that the corresponding contact switch failure of the battery strings, the threshold range can be set according to vehicle actual disposition Fixed.

By taking the scheme that accumulator body shown in Fig. 1 includes three battery strings as an example, detect switch control module and power-off occurs Failure of removal, then illustrate that the corresponding contact switch of at least battery strings does not normally disconnect, and now opens described setting and loads simultaneously Continue the first Preset Time, the setting load can never normally open battery strings obtain electric energy, therefore set load Terminal voltage changing value should be consistent with the terminal voltage changing value of the battery strings for providing electric energy for which, i.e., difference is in threshold range Interior.For example there was only the normal disconnection of battery strings one, start under the instruction of lower forceful electric power during setting load, the electricity of setting load Can be all from battery strings one, the therefore terminal voltage changing value of battery strings one and setting load is the terminal voltage change of bus circuit Change value should be consistent, as shown in Figure 3, it is contemplated that the electric energy loss that all parts and conducting wire are brought in circuit, in battery strings One failure of battery strings is thought when the difference of one terminal voltage changing value and the terminal voltage changing value of bus circuit is in threshold range, Its corresponding contact switch sintering or adhesion.

In addition, if when having two groups or more of battery strings normally not disconnect, for example, battery strings one and battery strings two are not just Normal off is opened, and is started during setting load under the instruction of lower forceful electric power, and the electric energy for setting load comes from battery strings one and battery String two, the therefore terminal voltage changing value sum of battery strings one and battery strings two and setting load is the terminal voltage change of bus circuit The difference of value is in threshold range, you can think two failure of battery strings one and battery strings, and its corresponding contact switch is sintered or adhesion.

Using the such scheme of the present embodiment, after switch control module generation power-off failure failure is detected, can be not In the case of additionally increasing any sensor, can be accurate using existing BMS, MCU, hardware load etc. in motor vehicle power system Really, the location of faults such as sintering or adhesion are quickly determined, maintenance time and cost is significantly reduced.

Embodiment 2

In Fig. 4 so that battery strings break down as an example, there is provided a kind of schematic flow diagram of abort situation detection method, tool Body includes：

S401：After sending lower forceful electric power instruction, whether detection switch control module there is power-off failure failure；Event is carried out afterwards Barrier positioning, enters step S402.

S402：In the initial time T1 of the first Preset Time, obtain the first battery strings initial voltage Bat1_Vol (T1), the Two battery strings initial voltage Bat2_Vol (T1), the 3rd battery strings initial voltage Bat3_Vol (T1) and bus circuit are initially electric Pressure Bus_Vol (T1), can obtain the magnitude of voltage of the branch line circuit that connects with each battery strings come on obtaining by BMS in this step State data.

S403：In persistent period t1=0, VMS sends and starts the control instruction for setting load, sets load to start.

S404：Whether the persistent period t1 is judged more than or equal to the first preset time T h1, if then entering step S405, otherwise repeats this step.The current time and initial time T1 that the persistent period can be provided according to system clock obtains Arrive.

S405：In end time T2 of first Preset Time, the terminal voltage changing value △ Bat1_ of battery strings one are obtained Vol (T2)=Bat1_Vol (T1)-Bat1_Vol (T2), battery strings two terminal voltage changing value △ Bat2_Vol (T2)= Bat2_Vol (T1)-Bat2_Vol (T2), battery strings three terminal voltage changing value △ Bat3_Vol (T2)=Bat3_Vol (T1)- Bat3_Vol (T2), terminal voltage changing value △ Bus_Vol (T2)=Bus_Vol (the T1)-Bus_Vol (T2) of bus circuit, its Middle T2-T1=Th1, VMS pass through BMS direct access Bat1_Vol (T2), Bat2_Vol (T2), Bat3_Vol (T2) and Bus_ Vol (T2), carries out simple subtraction computing afterwards and above-mentioned data is obtained.

S406：VMS sends and closes the control instruction for setting load, to close the setting load.

S407：Done with the voltage threshold Trd_Vol for prestoring according to the result of calculation in step S405 Whether the difference between the terminal voltage changing value of the terminal voltage changing value and bus circuit of disconnected battery strings one is less than voltage threshold Trd_Vol；If then the terminal voltage changing value of explanation battery strings one and the difference of the terminal voltage changing value of bus circuit are in threshold value model Step S408 is then entered in enclosing；Step S409 is otherwise entered；.

S408：One failure of battery strings, contact switch sintering identifier put 1.

S409：One fault-free of battery strings, contact switch sintering identifier set to 0.

S410：Judge battery strings two terminal voltage changing value and bus circuit terminal voltage changing value between difference whether It is less than voltage threshold Trd_Vol (i.e. in threshold range)；If then the terminal voltage changing value of explanation battery strings two is electric with bus The difference of the terminal voltage changing value on road then enters step S411 in threshold range；Step S412 is otherwise entered.

S411：Two failure of battery strings, contact switch sintering identifier put 1.

S412：Two fault-free of battery strings, contact switch sintering identifier set to 0.

S413：Three failure of battery strings, contact switch sintering identifier put 1, i.e., when battery strings one and battery strings two are not sent out During raw failure, then can confirm that battery strings three break down.

In for such scheme, voltage threshold Trd_Vol can be set according to the configuration of dynamical system, considered during setting The energy loss that each circuit is produced in dynamical system, is obtained by demarcation mode.

In addition, if when having two groups or more of battery strings failure, obtaining △ Bat1_Vol (T2), △ Bat2_Vol (T2), after △ Bat3_Vol (T2), △ Bus_Vol (T2), the terminal voltage changing value and bus circuit of possible each battery strings Terminal voltage changing value difference not in threshold range, can now determine whether, if the terminal voltage of certain Battery pack string becomes The difference of the terminal voltage changing value that change value sum is loaded with the setting is in threshold range, if then determining every in the Battery pack string The corresponding contact switch of one battery strings breaks down.For example, if during starting setting load under the instruction of lower forceful electric power, examining Measure：

∣[△Bat1_Vol(T2)+△Bat2_Vol(T2)]-△Bus_Vol(T2)∣<Trd_Vol, also, △ Bat3_ Vol (T2) is almost nil, i.e., the terminal voltage changing value sum of battery strings one and battery strings two is changed with the terminal voltage of bus circuit Value is consistent, and the terminal voltage of battery strings three does not almost change, then can determine that battery strings one and battery strings two are not normal Disconnect, the electric energy for setting load comes from battery strings one and battery strings two, two corresponding contact switch of battery strings one and battery strings There is the failure of sintering or adhesion.

In the such scheme of the present embodiment, the acquisition of data is can achieve using the function of original part in dynamical system, And only need to carry out simple subtraction, comparison operation and can achieve abort situation detection, reduce time needed for maintenance and Cost.

Embodiment 3

Another kind of end electricity for obtaining the terminal voltage changing value for setting load and each battery strings is provided in the present embodiment The scheme of pressure changing value, specifically includes following steps：

S1031：Obtain the first voltage-Annual distribution information of the bus circuit and the second electricity of the branch line circuit Pressure-Annual distribution information；

S1032：First active voltage is determined according to the first preset sample frequency and the first voltage-Annual distribution information Value and the initial voltage of the bus circuit in the first Preset Time initial time；According to the described first default sampling frequency Rate and the second voltage-Annual distribution information determine the second effective voltage value and in the first Preset Time initial time The initial voltage of the branch line circuit；

S1033：First sampling instant is determined according to first preset sample frequency, in arbitrary first sampling Carve：Calculate the first voltage difference between first effective voltage value and the initial voltage of the bus circuit；Calculate described Second voltage difference between the initial voltage of the second effective voltage value and the branch line circuit；

S1034：The corresponding first voltage difference of all described first sampling instant in first Preset Time is entered Row weighted sum obtains the terminal voltage changing value for setting load；In first Preset Time all described first is adopted Sample moment corresponding second voltage difference is weighted summation and obtains being become with the terminal voltage of the battery strings of the branch line circuit connected in series Change value.

Illustrate with reference to the first voltage-Annual distribution information of bus circuit.As shown in figure 5, described first Six samplings are carried out in Preset Time to first voltage-Annual distribution information.In the figure, damage curve is 501, Theoretical Calculation Normalized curve is 502, in the first Preset Time, records the voltage-time curve of bus circuit, namely bus voltage value Bus_ The mapping relations of Vol (t) (volt) and time t (millisecond).Arranged in the first Preset Time according to the first preset sample frequency Sampling number k, each Δ t1k can be differed, and Δ t11+ Δ t12+ ...+the first Preset Times of Δ t1k=, in Figure 5 Six time interval Δ t11, Δ t12, Δ t13, Δ t14, Δ t15 and Δ t16 are preset, i.e., in first Preset Time Sampling number k=6.Certainly, sampling number k can be set as other numerical value as needed.In multiple repairing weld, correspond to each and adopt The terminal voltage changing value (that is, the difference of Bus_Vol (t) and initial voltage Bus_Volt (T1)) at sample moment is Δ Bus_Vol (T1 + Δ t11), Δ Bus_Vol (T1+ Δ t12) ... Δ Bus_Vol (T1+ Δ t1k), determine the corresponding end electricity of six time intervals Pressure changing value, the result for being weighted summation process are △ Bus_Vol (T2).Weighting weight can be accounted for whole with each sampling time The proportion in individual sampling period, importance of sampled point etc. determine.

The process sampled by the second voltage-Annual distribution information of each branch line circuit and method phase shown in Fig. 5 Seemingly.It should be noted that when sampling to bus circuit and branch line circuit, judging cycle, sample frequency and sampling number Identical, more accurately comparative result is obtained.

Embodiment 4

The abort situation detection method that the present embodiment is provided, as shown in fig. 6, comprise the steps：

S601：After sending lower forceful electric power instruction, whether detection switch control module there is power-off failure failure；Wherein, described Lower forceful electric power is instructed and is disconnected for each contact switch controlled in the switch control module.

S602：If the switch control module occurs power-off failure failure, send and start the control instruction for setting load, And the control instruction for closing the setting load is sent after the first Preset Time.

S603：In first Preset Time, the terminal voltage changing value for setting load and each battery strings are obtained Terminal voltage changing value.

S604：If the difference of the terminal voltage changing value that the terminal voltage changing value of a certain battery strings is loaded with the setting is in threshold value In the range of, it is determined that the corresponding contact switch failure of the battery strings.

S605：In the second Preset Time sent after closing the control instruction for setting load, bus circuit is obtained Terminal voltage changing value as reference value, obtain the terminal voltage changing value of each battery strings, the second Preset Time can be with first Preset Time adopts identical value.

S606：If the difference of the terminal voltage changing value sum of certain Battery pack string and the reference value is in threshold range, really The corresponding contact switch failure of the fixed battery strings.

S607：Abort situation information is generated, to point out the contact switch position that breaks down.Can will be above-mentioned Abort situation information is sent to the mobile terminal of association, or above-mentioned abort situation information is sent to server, Technological improvement and accident analysis are carried out for research staff.

That is, after VMS completes the of short duration process for starting and setting load, normal closing setting can be entered and was loaded Journey, in order to whether accurately further determine that abort situation testing result or whether have new abort situation to occur, can with In the second Preset Time that closes after setting load, abort situation detection is carried out again.If there are a certain or battery strings not just Often close, then after closing and setting load, can detect the terminal voltage of the battery strings with bus circuit terminal voltage rise and Rise, and the amplitude of the rising of the two is consistent with trend, you can determine the contact switch sintering failure of the battery strings.If there are two During individual or more battery strings failure, can determine whether, if the terminal voltage changing value sum of a certain Battery pack string and benchmark The difference of value is in threshold range, if then determining that the corresponding contact switch of each battery strings breaks down in the Battery pack string. Using the such scheme of the present embodiment, the time needed for abort situation detection is increased, but more accurately result is obtained.

Embodiment 5

VMS sends lower forceful electric power and instructs to BMS, and BMS instructs each contact in controlling switch control module according to lower forceful electric power Switch off, after the instruction of lower forceful electric power has been sent, what the feedback further according to BMS did not judged in switch control module each connects VMS The whether normally disconnection of tactile switch, but determined according to the terminal voltage changing value and predeterminated voltage changing value of bus circuit, specifically The present embodiment a kind of method whether detection switch control module occurs power-off failure failure is provided, as shown in fig. 7, comprises such as Lower step：

S701：Obtain the terminal voltage changing value of bus circuit；

S702：Detect according to predeterminated frequency whether the terminal voltage changing value of the bus circuit changes less than predeterminated voltage Value；

S703：Record the number of times of the terminal voltage changing value less than the predeterminated voltage changing value of the bus circuit；

S704：When the number of times being detected more than or equal to preset times, determine that the switch control module occurs disconnected Electric failure of removal.

As shown in figure 8, according to the fault detection method that provided of a specific example of the present invention, step includes：Record The initial time T of lower forceful electric power instruction is sent, step 801 is entered, is recorded the initial voltage Bus_ of the bus circuit at forceful electric power moment Vol (T), arranges n=0, m=0, and wherein n is whether continuous monitoring terminal voltage changing value Δ Bus_Vol (t) holds electricity less than default The actual judgement number of times of pressure changing value Δ Bus_Vol_trd (t), m are to detect Δ Bus_Vol (t)<ΔBus_Vol_trd(t) Actual frequency (that is, number of times of the terminal voltage changing value for detecting less than default terminal voltage changing value)；Step 802, judges n ＜ Whether N sets up, if so, then execution step 803, if it is not, then execution step 807, wherein, N is continuous monitoring terminal voltage changing value Whether Δ Bus_Vol (t) is less than the actual judgement frequency threshold value for presetting terminal voltage changing value Δ Bus_Vol_trd (t)；Step 803, obtain the terminal voltage changing value of bus circuit, that is, terminal voltage changing value Bus_Vol (t) for calculating bus circuit (that is, has the Triple effect magnitude of voltage) and difference DELTA Bus_Vol (t) between the initial voltage Bus_Vol (T) of lower forceful electric power initial time；Step 804, judge whether that t ＞ Δs t sets up, if so, then execution step 805, if it is not, then execution step 803, wherein Δ t are sentenced for one Fixed cycle, in other words, in the present embodiment, will carry out n times judgement, be judged using Δ t as a judgement cycle, thus certainly every time Second predeterminated frequency is determined；Step 805, judges Δ Bus_Vol (t)<Whether Δ Bus_Vol_trd (t) is set up, if so, Then execution step 806, if it is not, then execution step 808, wherein Δ Bus_Vol_trd (t) are predeterminated voltage changing value；Step 806, actual judgement frequency n=n+1, number of times m=m+1；Step 807, judges whether m >=M sets up, if so, then on-off control mould Block failure symbol puts 1, determines switch control module failure, if it is not, then switch control module failure symbol sets to 0, wherein M is default time Number.In other words, with each Δ t as a judgement cycle, n times judgement has been carried out, if finding there be m Δ after n times judge Bus_Vol(t)<Δ Bus_Vol_trd (t) is set up and m exceedes pre-determined number, it is determined that switch control module failure.

In the present embodiment, under transmission after forceful electric power instruction, how to obtain within first judgement cycle and be in series with switch control The terminal voltage changing value of the bus circuit of molding block, can adopt the method similar with Fig. 5, i.e.,：From the initial of lower forceful electric power instruction Moment T rises, and records the voltage-time curve of bus circuit, namely bus voltage value Bus_Vol (t) (volt) is with time t (in the least Second) mapping relations.According to the second preset sample frequency, a sampling number k, each Δ tk judged in period Δ t is determined Can differ, and Δ t1+ Δ t2+ ...+Δ tk=Δ t.Sampling number k can be set as other numerical value as needed.? During multiple repairing weld, terminal voltage changing value (that is, Bus_Vol (t) and the initial voltage Bus_Volt (T) of each sampling instant corresponding Difference) be Δ Bus_Vol (T+ Δ t1), Δ Bus_Vol (T+ Δ t2) ... Δ Bus_Vol (T+ Δ tk), when determining six Between be spaced corresponding terminal voltage changing value, be weighted summation process result be Δ Bus_Vol (T+ Δ t).If judging Δ (T+ Δs t) then judges m=m+ in failure 1 time, i.e. Fig. 8 less than default terminal voltage changing value Δ Bus_Vol_trd (t) to Bus_Vol 1.Weighting weight can account for the determination such as proportion, the importance of sampled point in whole sampling period with each sampling time.

It should be noted that " predeterminated frequency " and " the second preset sample frequency " two terms in this specification, are employed, Wherein, predeterminated frequency is referred to and is once judged as a judgement cycle with Δ t, needs altogether to carry out n times judgement, it is therefore an objective to examine The number of times for judging failure is measured, and the second preset sample frequency refers to and judge k sampling is carried out in period Δ t at one, purpose It is the terminal voltage changing value for obtaining bus circuit.

During the judgement of n times terminal voltage changing value is carried out, can carry out judging on-off control mould using two ways Block whether failure, the cumulative frequency m1 and read-around ratio m2 in determined number m, wherein, cumulative frequency m1 is for completing n times terminal voltage After changing value judges, judges Failure count and as m1, read-around ratio m2 in n times terminal voltage changing value decision process, continuously Judge the number of times of failure, specifically include：

Method one：After the judgement for completing n times terminal voltage changing value, judge cumulative frequency m1 whether more than or equal to default Cumulative frequency M1, if so, then judges switch control module failure.

Method two：Judge that read-around ratio m2, whether more than or equal to default read-around ratio M2, if so, then judges on-off control Module failure, namely in continuous m2 failure of judgement, directly determine switch control module failure, it is not necessary to wait for n times end The judgement of voltage change.

That is, when cumulative frequency and/or read-around ratio are more than preset times M, judge switch control module failure.

In the technical scheme, by calculating the voltage difference between effective voltage value and initial voltage, to judging the cycle The corresponding voltage difference of all sampling instants be weighted summation, using the result of weighted sum as terminal voltage changing value, When switch control module occurs sintering or adhesion, still effectively can judge the failure of switch control module in time, improve electric power storage The reliability of pond fault detect and the experience of user, and within the judgement cycle, carry out multiple repairing weld, can carry out More accurate fail-ure criterion.

As another judgement embodiment, under transmission after forceful electric power instruction, the terminal voltage changing value of bus circuit, tool is obtained Body is comprised the following steps：From obtaining lower forceful electric power and completing the initial time T for instructing, the end electricity of the bus circuit of initial time is obtained Pressure, is denoted as initial voltage Bus_Vol (T)；From initial time T, timing obtains the bus circuit for specifying the moment to the specified moment Terminal voltage, be denoted as sample voltage value；Calculate voltage differences of the initial voltage Bus_Vol (T) and sample voltage value between；Will be just Voltage difference between beginning voltage and sample voltage value is defined as terminal voltage changing value.In other words, period Δ t is judged at one Interior, only once sampled in the end of Δ t, it is not necessary to summation is weighted to the voltage difference of multiple time intervals, effectively Amount of calculation and data pressure is reduced, the reliability of fault detect is improve.

In the above description, each judgement period Δ t or each sampling interval Δ tk in, can all the time with Bus_Vol (T) as initial voltage, to reduce computational complexity.But during Practical Calculation, it is also possible to by upper one judgement cycle Initial voltage of the effective voltage value of last sampling as the next judgement cycle, this can improve the plan of value of calculation and actual value Right.

Above-mentioned predeterminated frequency, preset times and predeterminated voltage changing value or the second preset sample frequency are strong under transmission Arranged according to user instruction before electricity instruction and stored, it is also possible to stored as definite value.In the technical scheme, by according to Family instruction arranged and stored predeterminated frequency, preset times and the second predeterminated frequency determine arbitrary judgement cycle corresponding default electricity Pressure changing value (that is, the ordered series of numbers of a predeterminated voltage changing value), improves motility and the reliability of failure detection schemes, namely Predeterminated frequency, predeterminated voltage changing value and preset times determine the precision and real-time of fault detect, meet user not Same detection demand.

Preferably, corresponding default terminal voltage changing value of arbitrary judgement cycle is determined according to predeterminated frequency, that is, presets end Voltage change Δ Bus_Vol_trd (t) is the ordered series of numbers of and time correlation, this have the advantage that, the Bus_ of reality Vol (t)-t curves are not straight lines, predeterminated voltage changing value is set to an ordered series of numbers and can preferably judge that failure is bent Whether the whole process of line generates the deviation more than threshold value with normalized curve, so as to more accurately judge Failure count m. In order to simplify calculating, it is also possible to which predeterminated voltage changing value Δ Bus_Vol_trd (t) is set to a constant, but, according to not Corresponding predeterminated voltage changing value is preset respectively with the judgement cycle, realizes, for the different detection periods, determining detection threshold value Technique effect, and then improve the reliability of the fault detect of switch control module.

Fig. 9 is indicated and after forceful electric power instruction, is obtained the voltage of the bus circuit for being in series with switch control module under transmission One example, including：Step 901, obtains the terminal voltage of bus circuit, the electricity for feeding back to VMS of such as motor control unit MCU Pressure MCU_Vol, battery management module BMS feed back to terminal voltage BMS_Vol of the bus circuit of VMS；Step 902, judges BMS_ Whether Vol_Max ＞ BMS_Vol ＞ BMS_Vol_Min set up, if so, then execution step 904, if it is not, then execution step 903； Step 903, judges whether MCU_Vol_Max ＞ MCU_Vol ＞ MCU_Vol_Min set up, if so, then execution step 905, if No, then execution step 906；Step 904, real-time busbar voltage Bus_Vol (t)=BMS_Vol；Step 905, real-time busbar voltage Bus_Vol (t)=MCU_Vol；Step 906, real-time busbar voltage Bus_Vol (t)=Def_Vol, wherein, Def_Vol is silent Recognize value.

Wherein, BMS_Vol_Max be BMS maximum threshold voltages, BMS_Vol_Min be BMS minimum threshold voltages, MCU_ Vol_Max is MCU maximum threshold voltages, and MCU_Vol_Min is MCU minimum threshold voltages.That is, in fig .9, pass through BMS, MCU feed back to the voltage of VMS whether in respective threshold range judging that BMS, MCU itself and its redundant sensor be No normal：

(1) judge whether BMS_Vol meets BMS_Vol_Max ＞ BMS_Vol ＞ BMS_Vol_Min, if so, then BMS is being just Often, the real-time voltage using BMS_Vol is used as busbar voltage information, if it is not, then BMS failures.

(2) judge whether MCU_Vol meets MCU_Vol_Max ＞ MCU_Vol ＞ MCU_Vol_Min, if so, then MCU is being just Often, the real-time voltage using MCU_Vol is used as busbar voltage information, if it is not, then MCU failures.

(3) if the equal failures of BMS and MCU, busbar voltage is set to default value, i.e. terminal voltage changing value and is always 0, now Directly judge switch control module failure.

It should be noted that in fig .9, being only described as acquiring unit using BMS and MCU, being obtained when there are other When unit can feed back bus circuit voltage, such as when other hardware loads also can feed back bus circuit voltage, it is also possible to right Whether the bus circuit voltage acquired in other acquiring units belongs to the threshold voltage ranges of the acquiring unit is detected, as long as Detect bus circuit voltage acquired in a certain acquiring unit be in should in the threshold voltage ranges of acquiring unit, then with The bus circuit magnitude of voltage that the acquiring unit is obtained carries out follow-up terminal voltage changing value and calculates as busbar voltage；If institute There is the busbar voltage acquired in acquiring unit beyond threshold voltage ranges, then the voltage of bus circuit is labeled as default value Def_Vol, that is, think that terminal voltage changing value is always 0, although now may not there is sintering or adhesion in switch control module Etc. failure, but still directly judge switch control module failure, this is a kind of erroneous judgement.Instructed according to the technology of this area, it is to avoid by mistake Sentence target when being breakdown judge, but mutually deviate from art technology teaching, embodiments of the invention set this mistake Sentence pattern because for using electric power as the motor vehicles of power source, the forceful electric power of accumulator directly threaten driving staff or The life security of person's maintainer, therefore under transmission after forceful electric power instruction, if acquiring unit produces failure and can not obtain Real bus circuit magnitude of voltage (now cannot physically judge whether switch control module has completed lower forceful electric power), then directly Judgement switch control module failure is connect, and is advantageous, this energy so as to point out subsequently operation to be carried out according to the state with forceful electric power Safety is enough improved.

In other words, in the embodiment in fig. 9, under transmission detect and whether there is in multiple acquiring units after forceful electric power instruction The voltage of the bus circuit acquired in a certain acquiring unit belongs to threshold voltage ranges corresponding with the acquisition module, if it is, The terminal voltage changing value of the bus circuit acquiring unit acquired in is then calculated, if it is not, then the voltage labelling by bus circuit For a default value, that is, judge that change in voltage is 0, directly determine switch control module failure.

In the embodiment shown in fig. 9, acquiring unit includes BMS, MCU, or air condition with camion, vehicle-mounted cooling fan, One or more in the hardware load such as DCDC and vehicle-mounted cooling water pump.

In above-mentioned technical proposal, the acquiring unit such as BMS, MCU and hardware load redundant sensor to accumulator battery The electric power detection failure (for example accumulator cell assembly, the current value of bus and/or magnitude of voltage are detected) of part or contact failure When, still judge the failure of switch control module, while production cost and maintenance cost is not lifted, in the way of forcing erroneous judgement The reliability of accumulator failure detection and the experience of user is improve, safety is improve.

On the basis of such scheme, following steps can also be increased：When switch control module failure is determined, event is sent Barrier information.In the technical scheme, by when switch control module failure is determined, generating fault cues information, intuitively Switch control module fault cues information alert to user, is improved the experience of user by ground.On the one hand, can will be above-mentioned Fault cues information is sent to the mobile terminal of association, on the other hand, above-mentioned fault cues information can be sent to power side, Force power-off send above-mentioned fault cues information to server to guarantee electrical safety, another further aspect, for researching and developing people Member carries out technological improvement and accident analysis.

Embodiment 6

The present embodiment provides a kind of abort situation detection means, as shown in Figure 10, including：

Fault determination module 11, after sending lower forceful electric power instruction, whether detection switch control module there is power-off failure failure； The lower forceful electric power is instructed and is disconnected for each contact switch controlled in the switch control module.

Load control module 12, if the switch control module occurs power-off failure failure, sends and starts setting load Control instruction, and after the first Preset Time send close described set load control instruction；Wherein, described setting loads One or more in for hardware load, such as high-pressure hydraulic pump, high-pressure fan；First Preset Time can be according to dynamical system Configuration determine, as far as possible short on the basis of fault location is able to ensure that in principle.

Data acquisition module 13, in first Preset Time, obtain described set load terminal voltage changing value and The terminal voltage changing value of each battery strings；Hardware load is connected to bus circuit, therefore obtains the terminal voltage change for setting load Change value can be realized by the terminal voltage changing value of acquisition bus circuit.And obtain bus circuit voltage can by with mother Carrying out, i.e. VMS receives the bus that acquiring unit is obtained in real time to the acquiring unit with voltage acquisition function of line circuit connection The magnitude of voltage of circuit, and the terminal voltage changing value for setting load is calculated according to the magnitude of voltage of bus circuit；VMS is received The magnitude of voltage of the branch line circuit being serially connected between battery strings and bus circuit that acquiring unit is obtained in real time, and according to branch line electricity The magnitude of voltage on road is calculated the terminal voltage changing value of the battery strings.Acquiring unit can using be connected with bus circuit BMS, MCU, hardware load etc..

Fault location module 14, if the terminal voltage changing value of a certain battery strings and the terminal voltage changing value for setting load Difference in threshold range, it is determined that the corresponding contact switch failure of the battery strings.If the terminal voltage changing value of each battery strings Not in threshold range, the fault location module 14 is additionally operable to the difference of the terminal voltage changing value loaded with the setting：? When the difference of the terminal voltage changing value that the terminal voltage changing value sum of certain Battery pack string is loaded with the setting is in threshold range, really The fixed equal failure of the corresponding contact switch of Battery pack string.

By taking the scheme that accumulator body shown in Fig. 1 includes three battery strings as an example, detect switch control module and power-off occurs Failure of removal, then illustrate that the corresponding contact switch of at least battery strings does not normally disconnect, and now opens described setting and loads simultaneously Continue the first Preset Time, the setting load can never normally open battery strings obtain electric energy, the end electricity for therefore loading Pressure changing value should be consistent with the terminal voltage changing value of the battery strings for providing electric energy for which, i.e., difference is in threshold range. Such as battery strings one are not normal to be disconnected, and starts during setting load under the instruction of lower forceful electric power, and the electric energy for setting load is whole Come from battery strings one, therefore the terminal voltage changing value of battery strings one is answered with the terminal voltage changing value that load is bus circuit is set This is consistent, the terminal voltage changing value and bus circuit of battery strings one terminal voltage changing value difference in threshold range when recognize For one failure of battery strings, its corresponding contact switch sintering or adhesion.

In addition, if when having two groups or more of battery strings failure, for example, battery strings one and battery strings two normally do not disconnect When, under the instruction of lower forceful electric power, starting during setting load, the electric energy of setting load comes from battery strings one and battery strings Two, the therefore terminal voltage changing value sum of battery strings one and battery strings two and setting load is the terminal voltage changing value of bus circuit Difference in threshold range, you can think two failure of battery strings one and battery strings, its corresponding contact switch sintering or adhesion.

In the present embodiment, the data acquisition module 13 can obtain the end electricity for setting load by the following two kinds mode Pressure changing value and the terminal voltage changing value of each battery strings.

Mode one：

In the initial time of first Preset Time, the voltage for obtaining the bus circuit is denoted as the first initial voltage, The voltage for obtaining the branch line circuit is denoted as the second initial voltage；

In the end time of first Preset Time, the voltage for obtaining the bus circuit is denoted as the first final voltage, The voltage for obtaining the branch line circuit is denoted as the second final voltage；

The voltage difference between first initial voltage and first final voltage is calculated, and load is set as described Terminal voltage changing value；Calculate the voltage difference between second initial voltage and second final voltage, as with institute State the terminal voltage changing value of the battery strings of branch line circuit connected in series.

Mode two：

Obtain the first voltage-Annual distribution information of the bus circuit and the second voltage-time of the branch line circuit Distributed intelligence；

According to the first preset sample frequency and the first voltage-Annual distribution information determine the first effective voltage value and The initial voltage of the bus circuit of the first Preset Time initial time；According to first preset sample frequency and institute State second voltage-Annual distribution information and determine the second effective voltage value and at described in the first Preset Time initial time The initial voltage of line circuit；

First sampling instant is determined according to first preset sample frequency, in arbitrary first sampling instant：Calculate First voltage difference between first effective voltage value and the initial voltage of the bus circuit；Calculate described second effective Second voltage difference between the initial voltage of magnitude of voltage and the branch line circuit；

Summation is weighted to the corresponding first voltage difference of all described first sampling instant in a judgement cycle Obtain the terminal voltage changing value for setting load；Corresponding to all described first sampling instant in a judgement cycle Two voltage differences are weighted summation and obtain the terminal voltage changing value with the battery strings of the branch line circuit connected in series.Wherein it is possible to Using the first effective voltage value of the last sampling in upper one judgement cycle as the bus circuit in next judgement cycle Initial voltage；Using described in second effective voltage value as next judgement cycle of the last sampling in upper one judgement cycle The initial voltage of line circuit, it is possible to increase the degree of fitting of value of calculation and actual value.

Preferably, the abort situation detection means also includes：

Reference value acquisition module 15, in the second Preset Time sent after closing the control instruction for setting load, The terminal voltage changing value of bus circuit is obtained as reference value, the terminal voltage changing value of each battery strings is obtained；

The fault location module 14, is additionally operable to exist with the difference of the reference value in the terminal voltage changing value of a certain battery strings When in threshold range, it is determined that the corresponding contact switch failure of the battery strings.During if there are two groups or more of battery strings failure, Can determine whether, if the terminal voltage changing value sum of a certain Battery pack string and the difference of reference value in threshold range, if Then determine the equal failure of the corresponding contact switch of Battery pack string.

That is, after VMS completes the of short duration process for starting and setting load, normal closing setting can be entered and was loaded Journey, in order to whether accurately further determine that abort situation testing result or whether have new abort situation to occur, can with In the second Preset Time that closes after setting load, abort situation detection is carried out again.Abnormal if there are a certain battery strings Close, then, after setting load is closed, the terminal voltage of the battery strings rises with the voltage rising of bus circuit, and the two The amplitude of rising is consistent with trend, you can determine the contact switch sintering failure of the battery strings.If there are two or more electricity During the string failure of pond, can determine whether, if the terminal voltage changing value sum of certain Battery pack string is with the difference of reference value in threshold value model In enclosing, if then determining the equal failure of the corresponding contact switch of Battery pack string.Using the such scheme of the present embodiment, although increase Time needed for abort situation detection, but available more accurate result.

In any of the above-described technical scheme, it is preferable that the abort situation detection means also includes：

Generation module 16, generates abort situation information, to point out the contact switch position that breaks down.Can be with The mobile terminal that above-mentioned abort situation is sent to association by 17 information of sending module, or above-mentioned abort situation is carried Show that information is sent to server, technological improvement and accident analysis is carried out for research staff.Sending module 17 can be antenna, radio frequency Module, Wi-Fi module, bluetooth module or cellular data communication module.

Embodiment 7

The abort situation detection means that the present embodiment is provided, theory diagram such as Figure 11 institutes of the fault determination module 11 Show, specifically include：

Data receipt unit 1101, obtains the terminal voltage changing value of bus circuit；

Whether detector unit 1102, detect the terminal voltage changing value of the bus circuit less than default end according to predeterminated frequency Voltage change；

Recording unit 1103, records the terminal voltage changing value of the bus circuit less than the default terminal voltage changing value Number of times；

Determining unit 1104, when the number of times is detected more than or equal to preset times, determines the on-off control mould There is power-off failure failure in block.

In the technical scheme, by detect bus circuit terminal voltage changing value, and judge terminal voltage changing value with pre- If the magnitude relationship of terminal voltage changing value, and then judge switch control module whether failure, forceful electric power but switch in the case where BMS feeds back When control module actual sintered or adhesion, still effectively can judge the failure of switch control module in time, produce into not lifted While this is with maintenance cost, the reliability of accumulator failure detection and the experience of user is improve.

Preferably, detector unit 1102 is additionally operable to：Detect in multiple acquiring units and obtained with the presence or absence of a certain acquiring unit The voltage of the bus circuit for taking belongs to threshold voltage ranges corresponding with the acquiring unit；The generation module 16, is additionally operable to Determining unit detects the number of times more than or equal to detecting all described obtain during preset times or in the detector unit When taking the voltage of the bus circuit acquired in unit and being not belonging to threshold voltage ranges corresponding with acquiring unit this described, raw Into fault cues information.

Data receipt unit 1101 is additionally operable to：When detector unit 1102 detects the bus electricity acquired in all acquiring units When the voltage on road is not admitted to threshold voltage ranges corresponding with each acquiring unit, the voltage of bus circuit is labeled as giving tacit consent to Value.

In the technical scheme, by carrying out voltage acquisition, data receipt unit 1101 to acquiring units such as BMS and MCU Fault detect is carried out according to the magnitude of voltage that acquiring unit is collected, the reliability and accurately of fault detect is further increasing Property, namely in all failures such as BMS and/or MCU, it is not necessary to the multiple repairing weld for carrying out busbar voltage judges, that is, generates failure and carry Show information, and then more effectively improve the safety of subsequent operation and maintenance.

In above-mentioned technical proposal, it is preferable that when number of times is cumulative frequency, preset times are preset cumulative number of times；Or it is secondary When number is read-around ratio, preset times are default read-around ratio.

In the technical scheme, when being cumulative frequency by arranging number of times, preset times are preset cumulative number of times M1, can be with After determining N number of judgement period Δ t, whether the Failure count m of switch control module reaches M1, judges on-off control if reaching When module failure, and then lift the accuracy of fault detect is read-around ratio by arranging number of times, preset times are default continuous Number of times M2, can determine switch control module failure when read-around ratio m reaches M2, it is not necessary to complete n times detection, you can confirm Switch control module failure, is effectively improved the efficiency of fault detect.

In any of the above-described technical scheme, it is preferable that also include：Memory element 1105, for arranging according to user instruction And store predeterminated frequency, preset times and arbitrary judgement cycle corresponding default terminal voltage changing value.

In the technical scheme, by arranging and storing predeterminated frequency, preset times and predeterminated frequency according to user instruction The corresponding default terminal voltage changing value of arbitrary judgement cycle for determining, improves motility and the reliability of failure detection schemes, Namely predeterminated frequency, default terminal voltage changing value and preset times determine the precision and real-time of fault detect, meet use The different detection demands at family.

Wherein, corresponding default terminal voltage changing value is preset respectively according to the different decision cycle, realizes being directed to different inspections The period is surveyed, the technique effect of detection threshold value is determined, and then is improve the reliability of the fault detect of switch control module.

In any of the above-described technical scheme, it is preferable that the data receipt unit 1101 is additionally operable to：Obtain bus circuit Voltage-vs-time distributed intelligence；Determining unit 1104 is additionally operable to：Determined according to preset sample frequency and voltage-vs-time distributed intelligence Initial voltage when effective voltage value and the lower forceful electric power of acquisition are instructed；The fault determination module 11 also includes：First computing unit 1106, for sampling instant being determined according to preset sample frequency, in arbitrary sampling instant, calculate effective voltage value and initial voltage Between voltage difference；First computing unit 1006 is additionally operable to：To the corresponding voltage difference of all sampling instants for judging the cycle Summation is weighted, using the result of weighted sum as terminal voltage changing value.Obtained within first judgement cycle is initial Voltage can be used as the initial voltage in follow-up judgement cycle, but preferably, determining unit 1104 is additionally operable to：Calculate first After unit 1106 completes the calculating of terminal voltage changing value, using the active voltage of the last sampling in upper one judgement cycle as next The initial voltage in individual judgement cycle, i.e. initial voltage are continuously updated.

In the technical scheme, by calculating the voltage difference between effective voltage value and initial voltage, to judging the cycle The corresponding voltage difference of all sampling instants be weighted summation, using the result of weighted sum as terminal voltage changing value, energy The precision of breakdown judge is enough improved, the reliability of accumulator failure detection and the experience of user is improve.

In any of the above-described technical scheme, it is preferable that data receipt unit 1101 is additionally operable to：The forceful electric power instruction under sending Initial time rises, and obtains the voltage of the bus circuit of initial time, is denoted as initial voltage；Data receipt unit 1101 is additionally operable to： From initial time, timing obtained the voltage of the bus circuit for specifying the moment, is denoted as sample voltage value to the specified moment；The event Barrier determining module 11 also includes：Second computing unit 1107, for calculating the voltage difference between initial voltage and sample voltage value Value；Second computing unit 1107 is additionally operable to：Voltage difference between initial voltage and sample voltage value is defined as terminal voltage change Change value.

In the technical scheme, by timing from initial time to specified moment, the bus circuit for specifying the moment is obtained Voltage, be denoted as sample voltage value, calculate the voltage difference between initial voltage and sample voltage value, by initial voltage and sampling Voltage difference between magnitude of voltage is defined as terminal voltage changing value, can improve fault detection efficiency, namely when only sampling specified (T+ Δ t), without the electricity to multiple time intervals for difference DELTA Bus_Vol between the magnitude of voltage at quarter and initial time magnitude of voltage Pressure difference is weighted summation, efficiently reduces amount of calculation and data pressure, improves the reliability of fault detect.

In any of the above-described technical scheme, it is preferable that also include：Signal generating unit 1108, for determining the switch control During module failure processed, fault cues information is generated.Fault cues information is sent by sending module 17.

In the technical scheme, by sending the fault cues information for having generated, on the one hand, can be by above-mentioned fault cues Information is sent to the mobile terminal of association, on the other hand, above-mentioned fault cues information can be sent to power side, force power-off To guarantee that electrical safety, another further aspect can send above-mentioned fault cues information to server, so that research staff carries out skill Art is improved and accident analysis.

Wherein, memory element 1105 can be the storage devices such as ROM, RAM or EPROM, during signal generating unit 1108 is connected to Control prompting interface, motor and transmitting element 1108, detector unit 1102, recording unit 1103, determining unit 1104, first Computing unit 1106 and the second computing unit 1107 are integrated in motor control unit or main control module.

Embodiment 8

The present embodiment provides a kind of accumulator cell assembly, and as shown in figure 12, the accumulator cell assembly includes Figure 10, each in 11 Individual module, unit.As illustrated, accumulator cell assembly includes：The driving interface 1202 of hardware load (high pressure adnexa) 1200 connects To accumulator body 1204, in fact, motor 1212 is also a kind of hardware load, in order to clear separately shown in figure. Switch control module 1206 is in series between the bus circuit of accumulator body 1204 and driving interface 1202；Battery management module (i.e. BMS1208), is connected to accumulator body 1204, for the closure state of controlling switch control module 1206；Main control module (including VMS etc.), is connected to battery management module (i.e. BMS1208) and accumulator body 1204, for according to driving interface 1202 terminal voltage change is worth to the terminal voltage changing value of the terminal voltage changing value namely hardware load of bus circuit.Wherein, BMS1208, MCU1210 and hardware load 1200 can be used as acquiring unit.Accumulator body 1204 described in figure, should wrap Multiple battery strings are included, each battery strings are connected with bus circuit by contact switch, all of contact switch constitutes switch control Molding block.

Wherein VMS under transmission forceful electric power instruction after, according to terminal voltage changing value and the default terminal voltage of the bus circuit Whether changing value detection switch control module 1206 there is power-off failure failure；If there is power-off in the switch control module 1206 Failure of removal, then send and start the control for setting load (the setting load is one or more in the hardware load 1200) System instruction, and the control instruction for closing the setting load is sent after the first Preset Time；In first Preset Time, Obtain the terminal voltage changing value of the terminal voltage changing value for setting load and each battery strings；If the terminal voltage of a certain battery strings The difference of the terminal voltage changing value that changing value is loaded with the setting is in threshold range, it is determined that the corresponding contact of the battery strings is opened Close failure.In the technical scheme, by arranging accumulator body 1204, battery management module (i.e. in accumulator cell assembly ) and main control module (including VMS etc.), and the change of the terminal voltage changing value according to driving interface 1202, predeterminated voltage BMS1208 The contact switch that 1206 failures of detection switch control module such as value, battery strings terminal voltage changing value and determination are broken down.In electricity The redundant sensor of pond management module (i.e. BMS1208) is to the electric power detection failure of accumulator cell assembly (for example to accumulator cell assembly Current value and/or magnitude of voltage detected) or contact failure when, still effectively can judge switch control module 1206 in time Failure simultaneously determines abort situation, while production cost and maintenance cost is not lifted, improve accumulator failure detection can Lean on the experience of property and user.

Wherein, main control module includes the motor vehicles central control system including VMS.

In above-mentioned technical proposal, it is preferable that also include：Motor control unit (i.e. MCU1210), is connected to driving interface Between 1202 and main control module (including VMS etc.), for detecting the terminal voltage changing value of driving interface 1202.In the technical scheme In, by arrange motor control unit (i.e. MCU1210) be connected to driving interface 1202 and main control module (including VMS etc.) it Between, for detecting the terminal voltage changing value of driving interface 1202, in battery management module (i.e. BMS1208) failure, can still have Effect judges the failure of switch control module 1206 in time, improves the reliability of accumulator failure detection and the use body of user Test.

In any of the above-described technical scheme, it is preferable that also include：Memory module, is connected to main control module (including VMS Deng), default for storing the first Preset Time, default terminal voltage changing value, preset times, the first preset sample frequency and second Sample frequency.

In any of the above-described technical scheme, it is preferable that also include：Communication module, is connected to main control module (including VMS Deng), for when main control module (including VMS etc.) determines 1206 failure of switch control module, sending the fault cues for having generated Information, after abort situation is determined, sends abort situation information.

In the technical scheme, by arranging communication module, and fault cues information is sent, on the one hand, can be by failure Information is sent to the user terminal 1216 of association, on the other hand, fault cues information can be sent to motor 1212 or other hardware loads 1200, force power-off to guarantee electrical safety, another further aspect can be by fault cues information Send to server, so that research staff carries out technological improvement.

In any of the above-described technical scheme, it is preferable that also include：CAN, is connected to main control module (including VMS etc.) And battery management module (i.e. BMS1208) between, for the closure state of switch control module 1206 is transmitted to main control module (including VMS etc.).

In any of the above-described technical scheme, it is preferable that CAN is also attached to main control module (including VMS etc.) and motor Between control unit (i.e. MCU1210), for terminal voltage changing value is transmitted to main control module (including VMS etc.).

In any of the above-described technical scheme, it is preferable that switch control module 1206 includes：The main control module is connected to, Carry for when the main control module determines the switch control module failure, generating the corresponding failure of the switch control module Show information；It is additionally operable to after the main control module determines the contact switch position that breaks down, generates abort situation prompting Information.By arranging reminding module, and when determining 1206 failure of switch control module and determining abort situation, in middle control prompting Corresponding information is generated in interface 1214, switch control module failure and abort situation is prompted to user intuitively, is carried The experience of user is risen.

As it was previously stated, switch control module 1206 includes that multiple contact switches, each of which contact switch can have multiple realities Scheme is applied, for example：

Example one, contact switch include the first relay and the second relay：

First relay, is arranged at the cathode output end of accumulator body 1204 and the electrode input end of driving interface 1202 Between；Second relay, be arranged at accumulator body 1204 cathode output end and driving interface 1202 negative input it Between.

Example two, the contact point of the contact point and negative terminal of the positive terminal of bus circuit is using same relay Two groups of contacts.

In any of the above-described technical scheme, it is preferable that hardware load is included in air condition with camion, vehicle-mounted fan and electromotor At least one.

Embodiment 9

Figure 13 shows the schematic block diagram of motor vehicles according to an embodiment of the invention.As shown in figure 13, according to the present invention Embodiment motor vehicles 1300, including：Abort situation detection means 1301 as described in above-mentioned any one technical scheme；Or such as Accumulator cell assembly 1302 described in any of the above-described technical scheme.Motor vehicles 1300 can adopt above-mentioned abort situation detection method The sintering or adhesion fault of switch control module are detected, and determines which or which contact switch of sintering or adhesion be One group, thus possess higher safety.

In the technical scheme, by detect bus circuit terminal voltage changing value, and judge terminal voltage changing value with pre- If the magnitude relationship of terminal voltage changing value, and then judge switch control module whether failure；Set by of short duration startup after a failure Fixed load, and detect each battery strings terminal voltage changing value and bus circuit terminal voltage changing value, it may be determined that broken down connects Which battery strings is touched corresponding to switch is, so that it is determined that abort situation.Electricity of the redundant sensor to accumulator cell assembly in BMS Detection failure (for example the current value and/or magnitude of voltage of accumulator cell assembly are detected) or contact failure when, still can effectively and When ground judge the failure of switch control module and carry out fault location, improve reliability and user that accumulator failure is detected Experience.

In above-mentioned technical proposal, it is preferable that motor vehicles are pure electric motor vehicle, Fuel cell electric motor-car or mixing Engine motor-car.

Embodiment 10

The present embodiment provides a kind of nonvolatile computer storage media, and the computer-readable storage medium is stored with computer Executable instruction, the computer executable instructions can perform the abort situation detection method in above-mentioned any means embodiment.

Embodiment 9

Figure 14 is the hardware architecture diagram of the electronic equipment of the execution abort situation detection method that the present embodiment is provided, such as Shown in Figure 14, the equipment includes：One or more processors 1401 and memorizer 1402, with a processor 1401 in Figure 14 As a example by.The equipment for executing abort situation detection method can also include：Input equipment 1403 and output device 1404.Processor 1401st, memorizer 1402, input equipment 1403 and output device 1404 can pass through bus or other modes connect, Tu14Zhong As a example by being connected by bus.

Memorizer 1402 can be used to store non-volatile software journey as a kind of non-volatile computer readable storage medium storing program for executing Sequence, non-volatile computer executable program and module, the execution abort situation detection method pair such as in the embodiment of the present application Programmed instruction/module (fault determination module 11 for example, shown in accompanying drawing 10, the load control module 12, data acquisition module that answers 13rd, fault location module 14 etc.).Processor 1401 by operation be stored in non-volatile software program in memorizer 1402, Instruction and module, so as to various function application and the data processing of execute server, that is, realize said method embodiment Execute abort situation detection method.Memorizer 1402 can include storing program area and storage data field, wherein, storing program area Can storage program area, the application program required at least one function；Storage data field can be stored and be detected according to abort situation Device uses created data etc..Additionally, memorizer 1402 can include high-speed random access memory, can also include Nonvolatile memory, for example, at least one disk memory, flush memory device or other non-volatile solid state memory parts. In certain embodiments, memorizer 1402 is optional including relative to the remotely located memorizer of processor 1401, these are remotely deposited Reservoir can pass through network connection to abort situation detection means.The example of above-mentioned network includes but is not limited to the Internet, enterprise In-house network, LAN, mobile radio communication and combinations thereof.

Input equipment 1403 can receives input numeral or character information, and produce and the use of abort situation detection means The key signals input that family is arranged and function control is relevant.Output device 1404 may include the display devices such as display screen.

One or more of module stores in the memorizer 1402, when by one or more of processors During 1401 execution, the execution abort situation detection method in above-mentioned any means embodiment is executed.

The method provided by the executable the embodiment of the present application of the said goods, possesses the corresponding functional module of execution method and has Beneficial effect.The ins and outs of detailed description in the present embodiment, not can be found in the method provided by the embodiment of the present application.

The electronic equipment of the embodiment of the present invention is present in a variety of forms, including but not limited to:

(1) mobile communication equipment:The characteristics of this kind equipment is that possess mobile communication function, and with offer speech, data Communicate as main target.This Terminal Type includes:Smart mobile phone (such as iPhone), multimedia handset, feature mobile phone, and low End mobile phone etc..

(2) super mobile personal computer equipment:This kind equipment belongs to the category of personal computer, has calculating and processes work( Can, typically also possess mobile Internet access characteristic.This Terminal Type includes:PDA, MID and UMPC equipment etc., such as iPad.

(3) portable entertainment device:This kind equipment can show and play content of multimedia.The kind equipment includes:Audio frequency, Video player (such as iPod), handheld device, e-book, and intelligent toy and portable car-mounted navigator.

(4) server:The equipment of the service of calculating is provided, the composition of server includes that processor, hard disk, internal memory, system are total Line etc., server are similar with general computer architecture, but due to needing to provide highly reliable service, are therefore processing energy The aspects such as power, stability, reliability, safety, extensibility, manageability require higher.

(5) other have the electronic installation of data interaction function.

Device embodiment described above is only that schematically the wherein described unit illustrated as separating component can To be or may not be physically separate, as the part that unit shows can be or may not be physics list Unit, you can be located at a place, or can also be distributed on multiple NEs.Which is selected according to the actual needs can In some or all of module realizing the purpose of this embodiment scheme.

Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can Mode by software plus required general hardware platform is realizing, naturally it is also possible to by hardware.Such understanding is based on, on State the part that technical scheme substantially contributes prior art in other words to embody in the form of software product, should Computer software product can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD etc., including some fingers Order is used so that a computer equipment (can be personal computer, server, or network equipment etc.) executes each enforcement Method described in some parts of example or embodiment.

Finally it should be noted that：Above example only in order to technical scheme to be described, rather than a limitation；Although With reference to the foregoing embodiments the present invention has been described in detail, it will be understood by those within the art that：Which still may be used To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic； And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and Scope.

Claims

1. a kind of abort situation detection method, it is characterised in that comprise the steps：

If the switch control module occurs power-off failure failure, send and start the control instruction for setting load, and first Send after Preset Time and close the control instruction for setting load；

In first Preset Time, the terminal voltage for obtaining the terminal voltage changing value for setting load and each battery strings becomes Change value；

If the difference of the terminal voltage changing value that the terminal voltage changing value of a certain battery strings is loaded with the setting is in threshold range, Determine the corresponding contact switch failure of the battery strings；

2. abort situation detection method according to claim 1, it is characterised in that if the terminal voltage change of each battery strings It is worth the difference of the terminal voltage changing value loaded with the setting not in threshold range, also comprises the steps：

If the difference of the terminal voltage changing value that the terminal voltage changing value sum of certain Battery pack string is loaded with the setting is in threshold range Interior, it is determined that in the Battery pack string, the corresponding contact switch of each battery strings breaks down.

3. abort situation detection method according to claim 1 and 2, it is characterised in that in first Preset Time, Obtain the terminal voltage changing value of the terminal voltage changing value for setting load and each battery strings respectively, specifically include following step Suddenly：

The magnitude of voltage of the bus circuit that acquiring unit is obtained in real time is received, and according to the magnitude of voltage of bus circuit is calculated Set the terminal voltage changing value of load；

Receive the voltage for being serially connected with each branch line circuit between each battery strings and bus circuit that acquiring unit is obtained in real time Value, and the terminal voltage changing value of respective battery string is calculated according to the magnitude of voltage of each branch line circuit.

4. abort situation detection method according to claim 3, it is characterised in that the acquiring unit include BMS, MCU, One or more in hardware load.

5. abort situation detection method according to claim 3, it is characterised in that obtain the terminal voltage for setting load The terminal voltage changing value of changing value and each battery strings, specifically includes following steps：

In the initial time of first Preset Time, the voltage for obtaining the bus circuit is denoted as the first initial voltage, obtains The voltage of the branch line circuit is denoted as the second initial voltage；

In the end time of first Preset Time, the voltage for obtaining the bus circuit is denoted as the first final voltage, obtains The voltage of the branch line circuit is denoted as the second final voltage；

The voltage difference between first initial voltage and first final voltage is calculated, as the end for setting load Voltage change；Calculate the voltage difference between second initial voltage and second final voltage, as with described The terminal voltage changing value of the battery strings of line circuit connected in series.

6. abort situation detection method according to claim 3, it is characterised in that obtain the terminal voltage for setting load The terminal voltage changing value of changing value and each battery strings, specifically includes following steps：

Obtain the first voltage-Annual distribution information of the bus circuit and the second voltage-Annual distribution of the branch line circuit Information；

First effective voltage value is determined and described according to the first preset sample frequency and the first voltage-Annual distribution information The initial voltage of the bus circuit of the first Preset Time initial time；According to first preset sample frequency and described Two voltage-vs-time distributed intelligences determine the second effective voltage value and the branch line electricity in the first Preset Time initial time The initial voltage on road；

First sampling instant is determined according to first preset sample frequency, in arbitrary first sampling instant：Calculate described First voltage difference between the initial voltage of the first effective voltage value and the bus circuit；Calculate second active voltage Second voltage difference between value and the initial voltage of the branch line circuit；

Summation is weighted to the corresponding first voltage difference of all described first sampling instant in first Preset Time Obtain the terminal voltage changing value for setting load；Corresponding to all described first sampling instant in first Preset Time Second voltage difference be weighted the terminal voltage changing value that summation obtains with the battery strings of the branch line circuit connected in series.

7. abort situation detection method according to claim 1, it is characterised in that further comprising the steps of：

In the second Preset Time sent after closing the control instruction for setting load, the terminal voltage for obtaining bus circuit becomes Change value obtains the terminal voltage changing value of each battery strings as reference value；

If the difference of the terminal voltage changing value of a certain battery strings and the reference value is in threshold range, it is determined that the battery strings are corresponding Contact switch failure.

8. abort situation detection method according to claim 7, it is characterised in that if the terminal voltage change of each battery strings Be worth with the difference of the reference value not in threshold range, then further comprising the steps of：

If the difference of the terminal voltage changing value sum of certain Battery pack string and the reference value is in threshold range, it is determined that the Battery pack In string, the corresponding contact switch of each battery strings breaks down.

9. the abort situation detection method according to any one of claim 1-8, it is characterised in that further comprising the steps of：

Abort situation information is generated, to point out the contact switch position that breaks down.

10. the abort situation detection method according to any one of claim 1-9, it is characterised in that send lower forceful electric power instruction Afterwards, in the step of whether detection switch control module occurs power-off failure failure, specifically include：

Obtain the terminal voltage changing value of bus circuit；

Detect according to predeterminated frequency whether the terminal voltage changing value of the bus circuit is less than predeterminated voltage changing value；

Record the number of times of the terminal voltage changing value less than the predeterminated voltage changing value of the bus circuit；

When the number of times being detected more than or equal to preset times, determine that the switch control module occurs power-off failure event Barrier.

11. abort situation detection methods according to claim 10, it is characterised in that after sending lower forceful electric power instruction, obtain The terminal voltage changing value of bus circuit, specifically includes following steps：

Detect in multiple acquiring units with the presence or absence of the bus circuit acquired in a certain acquiring unit terminal voltage belong to The corresponding threshold voltage ranges of the acquiring unit, if it is, calculate the end of the bus circuit acquired in the acquiring unit Voltage change, if it is not, then be labeled as a default value by the terminal voltage of the bus circuit.

12. abort situation detection methods according to claim 10, it is characterised in that in the terminal voltage of the bus circuit When being labeled as default value, directly determine that the switch control module occurs power-off failure failure.

13. abort situation detection methods according to claim 10, it is characterised in that when the number of times is cumulative frequency, The preset times are preset cumulative number of times；Or the number of times, when being read-around ratio, the preset times are default read-around ratio.

14. abort situation detection methods according to claim 10, it is characterised in that after sending lower forceful electric power instruction, obtain The terminal voltage changing value of bus circuit, specifically includes following steps：

From the initial time of lower forceful electric power instruction is sent, the terminal voltage of the bus circuit of the initial time is obtained, is denoted as initial Magnitude of voltage；

From the initial time, timing obtained the terminal voltage of the bus circuit at the specified moment, is denoted as adopting to the specified moment Sample magnitude of voltage；

The voltage difference between the initial voltage value and the sample voltage value is calculated as the terminal voltage of the bus circuit Changing value.

15. abort situation detection methods according to claim 10, it is characterised in that after sending lower forceful electric power instruction, obtain The terminal voltage changing value of bus circuit, specifically includes following steps：

Obtain the tertiary voltage-Annual distribution information of the bus circuit；

Under determining the 3rd effective voltage value and obtain according to the second preset sample frequency and the tertiary voltage-Annual distribution information 3rd initial voltage of forceful electric power bus circuit when completing to instruct；

Second sampling instant is determined according to second preset sample frequency, in arbitrary second sampling instant, is calculated described Tertiary voltage difference between 3rd effective voltage value and the 3rd initial voltage；

Summation is weighted to the corresponding tertiary voltage difference of all described second sampling instant in a judgement cycle, with institute State the terminal voltage changing value of the result as the bus circuit of weighted sum.

16. abort situation detection methods according to claim 15, it is characterised in that after sending lower forceful electric power instruction, obtain The terminal voltage changing value of bus circuit, further comprising the steps of：

Using the 3rd effective voltage value of the last sampling in upper one judgement cycle as the bus circuit in next judgement cycle 3rd initial voltage.

A kind of 17. abort situation detection methods using as described in any one of claim 1-16 carry out abort situation detection Motor vehicles.

18. a kind of abort situation detection means, it is characterised in that include：

Fault determination module, after sending lower forceful electric power instruction, whether detection switch control module there is power-off failure failure；

Load control module, if the switch control module occurs power-off failure failure, sends and starts the control for setting load Instruction, and the control instruction for closing the setting load is sent after the first Preset Time；

Data acquisition module, in first Preset Time, obtains the terminal voltage changing value and each electricity for setting load The terminal voltage changing value of pond string；

Fault location module, if the terminal voltage changing value of a certain battery strings is existed with the difference of the terminal voltage changing value for setting load In threshold range, it is determined that the corresponding contact switch failure of the battery strings；

19. abort situation detection means according to claim 18, it is characterised in that if the terminal voltage of each battery strings becomes Not in threshold range, the fault location module is additionally operable to the difference of the terminal voltage changing value that change value is loaded with the setting：

The 20. abort situation detection means according to claim 18 or 19, it is characterised in that the data acquisition module, Specifically for：

21. abort situation detection means according to claim 20, it is characterised in that the acquiring unit include BMS, One or more in MCU, hardware load.

22. abort situation detection means according to claim 20, it is characterised in that the data acquisition module, specifically For：

23. abort situation detection means according to claim 20, it is characterised in that the data acquisition module, specifically For：

24. abort situation detection means according to claim 20, it is characterised in that also include：

Reference value acquisition module, in the second Preset Time sent after closing the control instruction for setting load, obtains female The terminal voltage changing value of line circuit obtains the terminal voltage changing value of each battery strings as reference value；

The fault location module, is additionally operable in the terminal voltage changing value of a certain battery strings and the difference of the reference value in threshold value model When enclosing interior, it is determined that the corresponding contact switch failure of the battery strings.

25. abort situation detection means according to claim 24, it is characterised in that if the terminal voltage of each battery strings becomes Not in threshold range, then the fault location module is additionally operable to the difference of change value and the reference value：

When the terminal voltage changing value sum of certain Battery pack string and the difference of the reference value are in threshold range, the Battery pack is determined In string, the corresponding contact switch of each battery strings breaks down.

The 26. abort situation detection means according to any one of claim 18-25, it is characterised in that also include：

Generation module, generates abort situation information, to point out the contact switch position that breaks down.

The 27. abort situation detection means according to any one of claim 18-26, it is characterised in that the failure determines Module, specifically includes：

Data receipt unit, obtains the terminal voltage changing value of bus circuit；

Detector unit, detects according to predeterminated frequency whether the terminal voltage changing value of the bus circuit changes less than predeterminated voltage Value；

Recording unit, records the number of times of the terminal voltage changing value less than the predeterminated voltage changing value of the bus circuit；

Determining unit, when the number of times is detected more than or equal to preset times, determines that the switch control module occurs disconnected Electric failure of removal.

28. abort situation detection means according to claim 27, it is characterised in that the detector unit is additionally operable to：

Detect that the voltage in multiple acquiring units with the presence or absence of the bus circuit acquired in a certain acquiring unit belongs to Threshold voltage ranges corresponding with acquiring unit this described；

The generation module, be additionally operable to the determining unit detect the number of times more than or equal to preset times when or The detector unit detects the voltage of the bus circuit acquired in all acquiring units and is not belonging to obtain with this described When taking the corresponding threshold voltage ranges of unit, fault cues information is generated.

29. abort situation detection means according to claim 28, it is characterised in that the data receipt unit is also used In：

When the voltage that the detector unit detects the bus circuit acquired in all acquiring units be not admitted to During the corresponding threshold voltage ranges of each acquiring unit, the voltage of the bus circuit is labeled as default value.

30. abort situation detection means according to claim 29, it is characterised in that the confirmation unit, in the inspection When surveying unit and detecting the voltage of the bus circuit and be labeled as default value, directly determine that the switch control module occurs power-off Failure of removal.

31. abort situation detection means according to claim 27, it is characterised in that the data receipt unit is also used In：

From obtaining lower forceful electric power and completing the initial time for instructing, the voltage of the bus circuit of the initial time is obtained, is denoted as just Beginning magnitude of voltage；

From the initial time, timing obtained the voltage of the bus circuit at the specified moment, is denoted as sampling to the specified moment Magnitude of voltage；

32. abort situation detection means according to claim 27, it is characterised in that the data receipt unit is also used In：

33. abort situation detection means according to claim 32, it is characterised in that the data receipt unit is also used In：

A kind of 34. abort situation detection means using as described in any one of claim 18-33 carry out abort situation inspection The motor vehicles of survey.

35. a kind of accumulator cell assemblies, it is characterised in that include：

Hardware load；

Accumulator body, is connected with the hardware load by bus circuit, and which includes multiple battery strings, each battery strings and institute Stating and contact switch is in series between bus circuit, all contact switches constitute switch control module；

Battery management module, is connected to the accumulator body, each described connects for control in the switch control module Touch switch closure or disconnect；

Main control module, is connected to the battery management module and hardware load, is additionally operable to：

36. accumulator cell assemblies according to claim 35, it is characterised in that the main control module is additionally operable to：

Terminal voltage changing value and predeterminated voltage changing value according to the bus circuit determines whether the switch control module is former Barrier.

37. accumulator cell assemblies according to claim 35, it is characterised in that also include：

Motor control unit, is connected with the hardware load by bus circuit, for detecting the terminal voltage of the bus circuit Changing value, and the terminal voltage changing value of the bus circuit is sent to the main control module.

38. accumulator cell assemblies according to claim 35, it is characterised in that also include：

Memory module, is connected to the main control module, becomes for storing the first Preset Time, the second Preset Time, predeterminated voltage Change value, preset times, the first preset sample frequency and the second preset sample frequency.

39. accumulator cell assemblies according to claim 35, it is characterised in that also include：

Communication module, is connected to the main control module, for when the main control module determines the switch control module failure, Send the fault cues information for having generated；It is additionally operable to after the main control module determines the contact switch position that breaks down Send the abort situation information for having generated.

40. accumulator cell assemblies according to claim 35, it is characterised in that also include：

CAN, is connected between the main control module and the battery management module, for obtaining the battery management module The closure state of the switch control module that gets or off-state are transmitted to the main control module.

41. accumulator cell assemblies according to claim 40, it is characterised in that：

The CAN is also attached between the main control module and the motor control unit, for by the motor control The terminal voltage changing value of the bus circuit that unit gets is transmitted to the main control module.

42. accumulator cell assemblies according to claim 35, it is characterised in that the switch control module also includes：

Reminding module, is connected to the main control module, for when the main control module determines the switch control module failure, Generate the corresponding fault cues information of the switch control module；It is additionally operable to the contact that breaks down in main control module determination Behind switch position, abort situation information is generated.

43. accumulator cell assemblies according to claim 35, it is characterised in that each contact switch includes：

First relay, is arranged between the electrode input end of cathode output end and the bus circuit of battery strings；

Second relay, is arranged between the negative input of cathode output end and the bus circuit of battery strings.

44. accumulator cell assemblies according to any one of claim 35-43, it is characterised in that

The hardware load includes at least one in vehicle-mounted electric air conditioner, vehicle-mounted cooling fan, DCDC and vehicle-mounted cooling water pump.

45. a kind of motor vehicles, it is characterised in that include：

Accumulator cell assembly as any one of claim 35 to 44.

46. motor vehicles according to claim 45, it is characterised in that：

The motor vehicles are pure electric motor vehicle, Fuel cell electric motor-car or hybrid motor vehicle.