CN106501703B - BMS equilibrium metal-oxide-semiconductor detection method and device - Google Patents
BMS equilibrium metal-oxide-semiconductor detection method and device Download PDFInfo
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- CN106501703B CN106501703B CN201710005853.8A CN201710005853A CN106501703B CN 106501703 B CN106501703 B CN 106501703B CN 201710005853 A CN201710005853 A CN 201710005853A CN 106501703 B CN106501703 B CN 106501703B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2601—Apparatus or methods therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
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Abstract
The embodiment of the invention provides a kind of BMS equilibrium metal-oxide-semiconductor detection method and device, are related to battery management system technical field.The method by the case where detecting the non-unlocking condition of the equalizing circuit, obtaining the respective first battery core voltage of the N batteries respectively；In the case where detecting the equalizing circuit unlocking condition, the respective second battery core voltage of the N batteries is obtained respectively；According to the first battery core voltage of battery described in every section and the second battery core voltage, the difference of the battery core voltage of battery described in every section is obtained；The difference of the battery core voltage of battery described in every section is compared with preset threshold, judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit according to comparison result, the detection to the metal-oxide-semiconductor of battery in battery management system is realized with this.
Description
Technical field
The present invention relates to battery management system technical fields, in particular to a kind of BMS equilibrium metal-oxide-semiconductor detection method
And device.
Background technique
With the promotion and application of New-energy electric vehicle, battery management system (Battery Management
System, BMS) demand is being continuously improved.In processes such as daily BMS production test, the assembling production of battery pack, entrucking debugging
In, if there is the line sequence error of battery core voltage acquisition harness, situations such as short circuit, electrostatic, it is easy to by the balanced MOS of BMS
Pipe breakdown, to make battery core voltage acquisition inaccuracy, a series of problems such as equilibrium cannot be carried out to battery core voltage.But
Correlation function in existing battery management system, generally all without balanced metal-oxide-semiconductor detection.It will lead to so in process of production
The outflow of rejected product, various problem such as debugging, maintenance difficult, waste of manpower, material resources increase production, after sale etc. each
The cost of link.
Summary of the invention
In view of this, the embodiment of the present invention is designed to provide a kind of BMS equilibrium metal-oxide-semiconductor detection method and device, with
Improve the above problem.
In a first aspect, the BMS is for managing electricity the embodiment of the invention provides a kind of BMS equilibrium metal-oxide-semiconductor detection method
Pond group, the battery pack include N batteries, and battery described in every section is corresponding with equalizing circuit, which comprises detecting
It states under the non-unlocking condition of equalizing circuit, obtains the respective first battery core voltage of the N batteries respectively；Detecting the equilibrium
Under circuit unlocking condition, the respective second battery core voltage of the N batteries is obtained respectively；According to first of battery described in every section the electricity
Core voltage and the second battery core voltage, obtain the difference of the battery core voltage of battery described in every section；By the electricity of battery described in every section
The difference of core voltage is compared with preset threshold, judges that the battery corresponds to hitting for metal-oxide-semiconductor in equalizing circuit according to comparison result
Wear state.
Second aspect, the embodiment of the invention provides a kind of BMS equilibrium metal-oxide-semiconductor detection device, the BMS is for managing electricity
Pond group, the battery pack include N batteries, and battery described in every section is corresponding with equalizing circuit, and described device includes: the first acquisition list
Member, in the case where detecting the non-unlocking condition of the equalizing circuit, obtaining the respective first battery core electricity of the N batteries respectively
Pressure；Second acquisition unit, for it is respective to obtain the N batteries respectively in the case where detecting the equalizing circuit unlocking condition
Second battery core voltage；Third acquiring unit, for the first battery core voltage of the battery according to every section and second battery core electricity
Pressure, obtains the difference of the battery core voltage of battery described in every section；Comparison unit, for by the difference of the battery core voltage of battery described in every section
Value is compared with preset threshold, judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit according to comparison result.
BMS equilibrium detection method and device provided in an embodiment of the present invention, by detecting that the equalizing circuit do not open
Under the conditions of opening, the respective first battery core voltage of the N batteries is obtained respectively；Detecting the equalizing circuit unlocking condition
Under, the respective second battery core voltage of the N batteries is obtained respectively；According to the first battery core voltage of battery described in every section and described
Second battery core voltage obtains the difference of the battery core voltage of battery described in every section；By the difference of the battery core voltage of battery described in every section
It is compared with preset threshold, judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit according to comparison result, with this reality
Now to the detection of the metal-oxide-semiconductor of battery in battery management system.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structural block diagram that can be applied to the electronic equipment in the embodiment of the present invention；
Fig. 2 is the flow chart for the BMS equilibrium metal-oxide-semiconductor detection method that first embodiment of the invention provides；
Fig. 3 is the flow chart for the BMS equilibrium metal-oxide-semiconductor detection method that second embodiment of the invention provides；
Fig. 4 is the flow chart for the BMS equilibrium metal-oxide-semiconductor detection method that third embodiment of the invention provides；
Fig. 5 is the structural block diagram for the BMS equilibrium metal-oxide-semiconductor detection device that fourth embodiment of the invention provides；
Fig. 6 is the structural block diagram for the BMS equilibrium metal-oxide-semiconductor detection device that fifth embodiment of the invention provides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " first ", " second ", " third " etc. are only used for distinguishing and retouch
It states, is not understood to indicate or imply relative importance.
Referring to Fig. 1, Fig. 1 shows a kind of structural block diagram of electronic equipment 100 that can be applied in the embodiment of the present invention.
The electronic equipment 100 can be used as user terminal, be also possible to computer or server, the user terminal can for mobile phone,
Tablet computer or car-mounted terminal.As shown in Figure 1, electronic equipment 100 may include memory 110, storage control 111, processing
Device 112 and BMS equilibrium metal-oxide-semiconductor detection device.
Memory 110, storage control 111 are directly or indirectly electrically connected between each element of processor 112, to realize
The transmission or interaction of data.For example, can realize electricity by one or more communication bus or signal bus between these elements
Connection.BMS equilibrium metal-oxide-semiconductor detection method respectively includes at least one can store in the form of software or firmware (firmware)
Software function module in memory 110, for example, the BMS equilibrium metal-oxide-semiconductor detection device software function module that includes or
Computer program.
Memory 110 can store various software programs and module, such as BMS equilibrium MOS provided by the embodiments of the present application
Corresponding program instruction/the module of pipe detection method and device.Software of the processor 112 by operation storage in the memory 110
Program and module, thereby executing various function application and data processing, i.e. BMS in realization the embodiment of the present application is balanced
Metal-oxide-semiconductor detection method.Memory 110 can include but is not limited to random access memory (Random Access Memory,
RAM), read-only memory (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only
Memory, PROM), erasable read-only memory (Erasable Programmable Read-Only Memory, EPROM),
Electricallyerasable ROM (EEROM) (Electric Erasable Programmable Read-Only Memory, EEPROM) etc..
Processor 112 can be a kind of IC chip, have signal handling capacity.Above-mentioned processor can be general
Processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit (Network
Processor, abbreviation NP) etc.；It can also be digital signal processor (DSP), specific integrated circuit (ASIC), ready-made programmable
Gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.It can
To realize or execute disclosed each method, step and the logic diagram in the embodiment of the present application.General processor can be micro-
Processor or the processor are also possible to any conventional processor etc..
Electronic equipment 100 can also include battery core voltage acquisition module 113.Battery core voltage acquisition module 113 and processor
112 electrical connections.Battery core voltage acquisition module 113 is used to acquire the battery core voltage of every batteries in battery pack and passes to the place
Manage device 112.Battery core voltage acquisition module 113 includes multichannel battery core voltage collection circuit.There are N batteries in battery pack, correspondingly
Then there is the road N battery core voltage collection circuit.Every batteries are corresponding with battery core voltage collection circuit all the way.
First embodiment
Referring to figure 2., the embodiment of the invention provides a kind of BMS equilibrium metal-oxide-semiconductor detection methods, and the BMS is for managing
Battery pack, the battery pack include N batteries, and battery described in every section is corresponding with equalizing circuit, which comprises
Step S200: in the case where detecting the non-unlocking condition of the equalizing circuit, the N batteries respective are obtained respectively
One battery core voltage；In the case where detecting the non-unlocking condition of equalizing circuit, battery core voltage collection circuit corresponding to the equalizing circuit is adopted
Collect the battery core voltage of the battery, for the first battery core voltage of the battery.The similarly respective first battery core electricity of available N batteries
Pressure.Processor 112 gets the collected first battery core voltage of each road battery core voltage collection circuit.
Step S210: in the case where detecting the equalizing circuit unlocking condition, the N batteries respective second are obtained respectively
Battery core voltage；
In the case where detecting equalizing circuit unlocking condition, battery core voltage collection circuit corresponding to the equalizing circuit acquires the electricity
The battery core voltage in pond, for the second battery core voltage of the battery.The similarly respective second battery core voltage of available N batteries.Place
Reason device 112 gets the collected second battery core voltage of each road battery core voltage collection circuit.
Step S220: according to the first battery core voltage of battery described in every section and the second battery core voltage, every section institute is obtained
State the difference of the battery core voltage of battery；
Step S230: the difference of the battery core voltage of battery described in every section is compared with preset threshold, is tied according to comparing
Fruit judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit.
The difference of the battery core voltage of battery described in every section is compared with preset threshold, according to comparison result, judgement should
Battery correspond to metal-oxide-semiconductor in equalizing circuit it is whether working properly or damage.
BMS equilibrium metal-oxide-semiconductor detection method provided in an embodiment of the present invention, the method is by detecting the balanced electricity
Under the non-unlocking condition in road, the respective first battery core voltage of the N batteries is obtained respectively；Detecting the equalizing circuit unlatching
Under the conditions of, the respective second battery core voltage of the N batteries is obtained respectively；According to the first battery core voltage of battery described in every section and
The second battery core voltage obtains the difference of the battery core voltage of battery described in every section；By the battery core voltage of battery described in every section
Difference is compared with preset threshold, judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit according to comparison result, with
This realizes the detection to the metal-oxide-semiconductor of battery in battery management system.
Second embodiment
Referring to figure 3., the embodiment of the invention provides a kind of BMS equilibrium metal-oxide-semiconductor detection methods, and the BMS is for managing
Battery pack, the battery pack include N batteries, and battery described in every section is corresponding with equalizing circuit, which comprises
Step S300: the battery core voltage acquisition process task other than default process task is closed；
In order to improve the accuracy of the method, the battery core voltage acquisition process needed to close other than default process task is appointed
Business.Default process task is defined as the acquisition process of the battery core voltage of pre-set battery.This can be according to the need of user
It asks, pre-selects the acquisition of the battery core voltage of certain battery of N batteries.For example, this N batteries can be numbered respectively,
B1、B2、B3......BN, can choose to B2The battery core voltage collection circuit of battery carries out battery core voltage acquisition, it should which closing removes
To B2All battery core voltage collection circuits in addition.Under this condition, if there is multiple Acquisition Circuits under the conditions of to B1、
B3... or BNBattery core voltage be acquired, collection result can be produced a very large impact, the battery core voltage got in this way
Have an impact, to influence final judging result.
In the present embodiment, the BMS equilibrium metal-oxide-semiconductor detection method is realized in the environment of uC/OS-II.As
A kind of embodiment can call function OSTmrStop (), indicate to close all possible electricity in addition to MOS detection method process
Clock under the system condition of core voltage acquisition task, to close all battery cores that may be present in addition to MOS detection method process
Voltage acquisition process.
Step S310: in the case where detecting the non-unlocking condition of the equalizing circuit, the N batteries respective are obtained respectively
One battery core voltage；
As an implementation, in the case where detecting the non-unlocking condition of the equalizing circuit, the N batteries are obtained one by one
Respective first battery core voltage.
The N batteries are corresponding with the road N equalizing circuit, the corresponding equalizing circuit all the way of every batteries.For example, actually using
In the case of, N can be 48.Preferably, in order to improve acquisition every batteries the first battery core voltage accuracy, detecting
Under all non-unlocking condition of the road N equalizing circuit, the battery core voltage of battery is only acquired every time, and the battery core voltage of the battery is fixed under this condition
Justice is the first battery core voltage of the battery.In this way, the battery core voltage of a battery is once obtained, until getting all N economize on electricitys
The battery core voltage in pond.In this way, obtaining the respective first battery core electricity of the N batteries one by one under under the non-unlocking condition of equalizing circuit
Pressure.In the present embodiment, it is realized in the environment of uC/OS-II, has got the respective first battery core voltage of N batteriesI=1,2 ... N；By the respective first battery core voltage of N batteriesValue be placed on array Vol_Base_Result
In [] [].
Step S320: in the case where detecting the equalizing circuit unlocking condition, the N batteries respective second are obtained respectively
Battery core voltage；
As an implementation, in the case where detecting the equalizing circuit unlocking condition, it is each that the N batteries are obtained one by one
From the second battery core voltage.
In order to improve the N batteries the second battery core voltage accuracy, electricity under every road equalizing circuit unlocking condition
The necessary independent acquisition of the battery core voltage in pond, i.e., it is balanced to acquire all the way all the way.The unlatching of equalizing circuit must individually open every section
The equalizing circuit of battery, and acquire the battery core voltage for opening the battery of the equalizing circuit.Preferably, only one is being detected
Under the equalizing circuit unlocking condition of road, and under the non-unlocking condition of other equalizing circuits, the battery core voltage of the battery is acquired, this is balanced
The battery core voltage of the battery acquired under circuit unlocking condition is defined as the second battery core voltage of the battery.In this way, every time only
Have under equalizing circuit unlocking condition all the way, the second battery core voltage of the battery is obtained, until obtaining the N batteries one by one respectively
The second battery core voltage.
In the present embodiment, it is realized in the environment of uC/OS-II, under the above balanced principle acquired all the way all the way,
The respective second battery core voltage U of N batteries is gotbi, i=1,2 ... ... N；By the respective second battery core voltage of N batteries
UbiValue be placed in array Vol_Balance_Result [] [].
Step S330: according to the first battery core voltage of battery described in every section and the second battery core voltage, every section institute is obtained
State the difference of the battery core voltage of battery；
Specifically, the first battery core voltage of the battery according to every sectionWith the Ubi, obtain battery described in every section
The difference DELTA U of battery core voltagei=Ubi-Uni, i=1,2 ... ... N.It should be noted that in battery management system, battery it is equal
After the circuit that weighs is opened, the metal-oxide-semiconductor of equalizing circuit is connected, and is had euqalizing current and is flowed through, under normal circumstances, collects the second of battery
Battery core voltage UbiThe first battery core voltage U of the battery can be higher thanni.U if it existsniHigher than UbiIn the case of, then the battery core voltage of battery
Difference can be Δ Ui=Uni-Ubi, wherein i=1,2 ... ... N.
In this embodiment, it is realized in the environment of uC/OS-II, will acquire two group battery core voltage Vol_Base_
Result [] [] and Vol_Balance_Result [] [] successively make the difference, and result is put into array Vol_Cahzhi [] [].
Step S340: the difference of the battery core voltage of battery described in every section is compared with preset threshold, is tied according to comparing
Fruit judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit.
As an implementation, if the difference of the battery core voltage of the battery is not more than the preset threshold, it is determined that
It is breakdown that the battery corresponds to metal-oxide-semiconductor in equalizing circuit.Specifically, if the difference DELTA U of the battery core voltage of the batteryiNo more than institute
State preset threshold, it is determined that battery BiMetal-oxide-semiconductor is breakdown in corresponding equalizing circuit；If the difference of the battery core voltage of the battery
ΔUiGreater than the preset threshold, it is determined that battery BiMetal-oxide-semiconductor is not breakdown i.e. normal in corresponding equalizing circuit.Wherein, described
Preset threshold is the value of a very little, or can be 0.It should be noted that it is described no more than the preset threshold include small
In or equal to the preset threshold；Preset threshold can be actually needed according to user and set.
In this embodiment, it is realized in the environment of uC/OS-II, preset threshold is set as 10, by array Vol_Cahzhi
Value in [] [] is successively compared with preset threshold 10, if the value in array Vol_Cahzhi [] [] is no more than default
Threshold value 10, then the corresponding position of array Mos_Short [] [] is 1, and otherwise corresponding position is 0.1 indicates that the battery is corresponding balanced
Metal-oxide-semiconductor breakdown or damage in circuit；To correspond to metal-oxide-semiconductor in equalizing circuit working properly for the 0 expression battery.
Data are uploaded, are called function OSTmrStart (), timer is restored.The metal-oxide-semiconductor inspection of the battery pack is completed with this
It surveys.
As an implementation, if the absolute value of the difference of the battery core voltage of the battery is not more than the default threshold
Value, it is determined that it is breakdown that the battery corresponds to metal-oxide-semiconductor in equalizing circuit.Specifically, if the difference of the battery core voltage of the battery
Absolute value | Δ Ui| it is not more than the preset threshold, it is determined that battery BiMetal-oxide-semiconductor is breakdown in corresponding equalizing circuit；If described
The difference of the battery core voltage of battery | Δ Ui| it is less than the preset threshold, it is determined that battery BiMetal-oxide-semiconductor is not in corresponding equalizing circuit
It is breakdown i.e. normal.Wherein, the preset threshold is the value of a very little, or can be 0.It should be noted that it is described not
It include being less than or equal to the preset threshold greater than the preset threshold；Preset threshold can be actually needed according to user and set.
Further, it is to be appreciated that the difference of the battery core voltage by battery described in every section compares with preset threshold
Right, the absolute value and the preset threshold that can be not limited to the difference of the battery core voltage compare, and also may include battery core electricity
The difference of pressure is done the result after numerical operation and is compared with preset threshold, for example, numerical operation includes square etc..Similarly basis
Comparison result judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit.
In this embodiment, it is realized in the environment of uC/OS-II, preset threshold is set as 10, will acquire two group battery core
Voltage Vol_Base_Result [] [], Vol_Balance_Result [] [] successively make the difference, and are put into after result is taken absolute value
In array Vol_Cahzhi [] [].By the value in array Vol_Cahzhi [] [], successively it is compared with preset threshold 10, such as
Value in fruit array Vol_Cahzhi [] [] is not more than preset threshold 10, then the corresponding position of array Mos_Short [] [] is
1, otherwise corresponding position is 0.1 indicates that the battery corresponds to metal-oxide-semiconductor breakdown or damage in equalizing circuit；0 indicates that the battery is corresponding equal
Metal-oxide-semiconductor is working properly in weighing apparatus circuit.
Data are uploaded, are called function OSTmrStart (), timer is restored.The metal-oxide-semiconductor inspection of the battery pack is completed with this
It surveys.
BMS equilibrium metal-oxide-semiconductor detection method provided in an embodiment of the present invention, the method is by detecting the balanced electricity
Under the non-unlocking condition in road, the respective first battery core voltage of the N batteries is obtained respectively；Detecting the equalizing circuit unlatching
Under the conditions of, the respective second battery core voltage of the N batteries is obtained respectively；According to the first battery core voltage of battery described in every section and
The second battery core voltage obtains the difference of the battery core voltage of battery described in every section；By the battery core voltage of battery described in every section
Difference is compared with preset threshold, judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit according to comparison result, with
This realizes the detection to the metal-oxide-semiconductor of battery in battery management system.
3rd embodiment
Referring to figure 4., the embodiment of the invention provides a kind of BMS equilibrium metal-oxide-semiconductor detection devices 400, and the BMS is for managing
Battery pack is managed, the battery pack includes N batteries, and battery described in every section is corresponding with equalizing circuit, and described device 400 includes:
First acquisition unit 410, in the case where detecting the non-unlocking condition of the equalizing circuit, obtaining the N section respectively
The respective first battery core voltage of battery；
Second acquisition unit 420, in the case where detecting the equalizing circuit unlocking condition, obtaining the N economize on electricity respectively
The respective second battery core voltage in pond；
Third acquiring unit 430, for the first battery core voltage and the second battery core voltage of the battery according to every section,
Obtain the difference of the battery core voltage of battery described in every section；
Comparison unit 440, for the difference of the battery core voltage of battery described in every section to be compared with preset threshold, according to
Comparison result judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit.
It should be noted that each unit in the present embodiment can be by software code realization, under this condition, above-mentioned is each
Unit can be stored in memory 110.The above each unit can equally be realized by hardware such as IC chip.
The technical effect of BMS equilibrium metal-oxide-semiconductor detection device provided in an embodiment of the present invention, realization principle and generation is with before
The BMS equilibrium metal-oxide-semiconductor detection method embodiment stated in the first implementation is identical, and to briefly describe, Installation practice part is not referred to
Place can refer to corresponding contents in preceding method embodiment.
Fourth embodiment
Referring to figure 5., the embodiment of the invention provides a kind of BMS equilibrium metal-oxide-semiconductor detection devices 500, and the BMS is for managing
Battery pack is managed, the battery pack includes N batteries, and battery described in every section is corresponding with equalizing circuit, and described device 500 includes:
Closing unit 510, for closing the battery core voltage acquisition process task other than default process task.
First acquisition unit 520, in the case where detecting the non-unlocking condition of the equalizing circuit, obtaining the N section respectively
The respective first battery core voltage of battery.
As an implementation, the first acquisition unit 520 includes the first acquisition subelement 521.
First obtains subelement 521, for obtaining the N one by one in the case where detecting the non-unlocking condition of the equalizing circuit
The respective first battery core voltage of batteries.
Second acquisition unit 530, in the case where detecting the equalizing circuit unlocking condition, obtaining the N economize on electricity respectively
The respective second battery core voltage in pond.
As an implementation, the second acquisition unit 530 includes the second acquisition subelement 531.
Second obtains subelement 531, in the case where detecting the equalizing circuit unlocking condition, obtaining the N section one by one
The respective second battery core voltage of battery.
Third acquiring unit 540, for the first battery core voltage and the second battery core voltage of the battery according to every section,
Obtain the difference of the battery core voltage of battery described in every section；
Comparison unit 550, for the difference of the battery core voltage of battery described in every section to be compared with preset threshold, according to
Comparison result judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit.
As an implementation, comparison unit 550 includes the first comparison unit 551.
First comparison unit 551, if the difference of the battery core voltage for the battery is not more than the preset threshold, really
It is breakdown that the fixed battery corresponds to metal-oxide-semiconductor in equalizing circuit.
Specifically, the first comparison unit 551, if the difference DELTA U of the battery core voltage for the batteryiIt is pre- no more than described
If threshold value, it is determined that battery BiMetal-oxide-semiconductor is breakdown in corresponding equalizing circuit；If the difference DELTA U of the battery core voltage of the batteryi
Greater than the preset threshold, it is determined that battery BiMetal-oxide-semiconductor is not breakdown i.e. normal in corresponding equalizing circuit.
It should be noted that each unit in the present embodiment can be by software code realization, under this condition, above-mentioned is each
Unit can be stored in memory 110.The above each unit can equally be realized by hardware such as IC chip.
The technical effect of BMS equilibrium metal-oxide-semiconductor detection device provided in an embodiment of the present invention, realization principle and generation is with before
The BMS equilibrium metal-oxide-semiconductor detection method embodiment stated in second embodiment is identical, and to briefly describe, Installation practice part is not mentioned
And place, it can refer to corresponding contents in preceding method embodiment.
5th embodiment
Fig. 6 is please referred to, the embodiment of the invention provides a kind of BMS equilibrium metal-oxide-semiconductor detection device 600, the BMS is for managing
Battery pack is managed, the battery pack includes N batteries, and battery described in every section is corresponding with equalizing circuit, and described device 600 includes:
Closing unit 610, for closing the battery core voltage acquisition process task other than default process task.
First acquisition unit 620, in the case where detecting the non-unlocking condition of the equalizing circuit, obtaining the N section respectively
The respective first battery core voltage of battery.
As an implementation, the first acquisition unit 620 includes the first acquisition subelement 621.
First obtains subelement 621, for obtaining the N one by one in the case where detecting the non-unlocking condition of the equalizing circuit
The respective first battery core voltage of batteries.
Second acquisition unit 630, in the case where detecting the equalizing circuit unlocking condition, obtaining the N economize on electricity respectively
The respective second battery core voltage in pond.
As an implementation, the second acquisition unit 630 includes the second acquisition subelement 631.
Second obtains subelement 631, in the case where detecting the equalizing circuit unlocking condition, obtaining the N section one by one
The respective second battery core voltage of battery.
Third acquiring unit 640, for the first battery core voltage and the second battery core voltage of the battery according to every section,
Obtain the difference of the battery core voltage of battery described in every section；
Comparison unit 650, for the difference of the battery core voltage of battery described in every section to be compared with preset threshold, according to
Comparison result judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit.
As an implementation, comparison unit 650 includes the second comparison unit 651.
Second comparison unit 651, if the absolute value of the difference of the battery core voltage for the battery is default no more than described
Threshold value, it is determined that it is breakdown that the battery corresponds to metal-oxide-semiconductor in equalizing circuit.
Specifically, the second contrast subunit 651, if the absolute value of the difference of the battery core voltage for the battery | Δ Ui|
No more than the preset threshold, it is determined that battery BiMetal-oxide-semiconductor is breakdown in corresponding equalizing circuit；If the battery core electricity of the battery
The difference of pressure | Δ Ui| it is less than the preset threshold, it is determined that battery BiMetal-oxide-semiconductor is not breakdown i.e. just in corresponding equalizing circuit
Often.
It should be noted that each unit in the present embodiment can be by software code realization, under this condition, above-mentioned is each
Unit can be stored in memory 110.The above each unit can equally be realized by hardware such as IC chip.
The technical effect of BMS equilibrium metal-oxide-semiconductor detection device provided in an embodiment of the present invention, realization principle and generation is with before
The BMS equilibrium metal-oxide-semiconductor detection method embodiment stated in second embodiment is identical, and to briefly describe, Installation practice part is not mentioned
And place, it can refer to corresponding contents in preceding method embodiment.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, flow chart and block diagram in attached drawing
Show the device of multiple embodiments according to the present invention, the architectural framework in the cards of method and computer program product,
Function and operation.In this regard, each box in flowchart or block diagram can represent the one of a module, section or code
Part, a part of the module, section or code, which includes that one or more is for implementing the specified logical function, to be held
Row instruction.It should also be noted that function marked in the box can also be to be different from some implementations as replacement
The sequence marked in attached drawing occurs.For example, two continuous boxes can actually be basically executed in parallel, they have ready conditions
Under can also execute in the opposite order, this depends on the function involved.It is also noted that in block diagram and or flow chart
Each box and the box in block diagram and or flow chart combination, can function or movement as defined in executing it is dedicated
Hardware based system realize, or can realize using a combination of dedicated hardware and computer instructions.
In addition, each functional module in each embodiment of the present invention can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
If the function realized in the form of software function module and as independent product sale or use condition under,
It can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention substantially or
Person says that the part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products,
The computer software product is stored in a storage medium, including some instructions are used so that computer equipment (can be with
It is personal computer, server or the network equipment etc.) execute all or part of step of each embodiment the method for the present invention
Suddenly.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), deposits at random
The various media that can store program code such as access to memory (RAM, Random Access Memory), magnetic or disk.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to an entity or behaviour
Make with another entity or operate distinguish, without necessarily requiring or implying between these entities or operation there are it is any this
The actual relationship of kind or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Include so that include a series of elements process, method, article or equipment not only include those elements, but also
Including other elements that are not explicitly listed, or further include for this process, method, article or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method, article or equipment of element.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Claims (10)
1. a kind of BMS equilibrium metal-oxide-semiconductor detection method, for the BMS for managing battery pack, the battery pack includes N batteries,
It is characterized in that, battery described in every section is corresponding with equalizing circuit, which comprises
In the case where detecting the non-unlocking condition of the equalizing circuit, the respective first battery core voltage of the N batteries is obtained respectively；
In the case where detecting the equalizing circuit unlocking condition, the respective second battery core voltage of the N batteries is obtained respectively；
According to the first battery core voltage of battery described in every section and the second battery core voltage, the battery core electricity of battery described in every section is obtained
The difference of pressure；
The difference of the battery core voltage of battery described in every section is compared with preset threshold, which is judged according to comparison result
Answer the breakdown conditions of metal-oxide-semiconductor in equalizing circuit.
2. the method according to claim 1, wherein by the difference of the battery core voltage of battery described in every section and presetting
Threshold value is compared, and judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit according to comparison result, comprising:
If the difference of the battery core voltage of the battery is not more than the preset threshold, it is determined that the battery corresponds in equalizing circuit
Metal-oxide-semiconductor is breakdown.
3. the method according to claim 1, wherein by the difference of the battery core voltage of battery described in every section and presetting
Threshold value is compared, and judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit according to comparison result, comprising:
If the absolute value of the difference of the battery core voltage of the battery is not more than the preset threshold, it is determined that the battery is corresponding balanced
Metal-oxide-semiconductor is breakdown in circuit.
4. the method according to claim 1, wherein dividing in the case where detecting the non-unlocking condition of the equalizing circuit
The respective first battery core voltage of the N batteries is not obtained, comprising:
In the case where detecting the non-unlocking condition of the equalizing circuit, the respective first battery core voltage of the N batteries is obtained one by one.
5. the method according to claim 1, wherein distinguishing in the case where detecting the equalizing circuit unlocking condition
Obtain the respective second battery core voltage of the N batteries, comprising:
In the case where detecting the equalizing circuit unlocking condition, the respective second battery core voltage of the N batteries is obtained one by one.
6. method according to claim 1-5, which is characterized in that detecting the non-open strip of the equalizing circuit
Under part, before obtaining the respective first battery core voltage steps of the N batteries respectively, the method also includes:
Close the battery core voltage acquisition process task other than default process task.
7. a kind of BMS equilibrium metal-oxide-semiconductor detection device, for the BMS for managing battery pack, the battery pack includes N batteries,
It is characterized in that, battery described in every section is corresponding with equalizing circuit, and described device includes:
First acquisition unit, for obtaining the N batteries respectively respectively in the case where detecting the non-unlocking condition of the equalizing circuit
The first battery core voltage；
Second acquisition unit, for it is respective to obtain the N batteries respectively in the case where detecting the equalizing circuit unlocking condition
Second battery core voltage；
Third acquiring unit obtains every for the first battery core voltage and the second battery core voltage of the battery according to every section
Save the difference of the battery core voltage of the battery；
Comparison unit is tied for being compared the difference of the battery core voltage of battery described in every section with preset threshold according to comparing
Fruit judges that the battery corresponds to the breakdown conditions of metal-oxide-semiconductor in equalizing circuit.
8. device according to claim 7, which is characterized in that the comparison unit includes:
First contrast subunit, if the difference of the battery core voltage for the battery is not more than the preset threshold, it is determined that should
It is breakdown that battery corresponds to metal-oxide-semiconductor in equalizing circuit.
9. device according to claim 7, which is characterized in that the comparison unit further include:
Second contrast subunit, if the absolute value of the difference of the battery core voltage for the battery is not more than the preset threshold,
It is breakdown then to determine that the battery corresponds to metal-oxide-semiconductor in equalizing circuit.
10. device according to claim 7, which is characterized in that the second acquisition unit includes:
Second obtains subelement, in the case where detecting the non-unlocking condition of the equalizing circuit, obtaining the N batteries one by one
Respective first battery core voltage.
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| CN201710005853.8A CN106501703B (en) | 2017-01-04 | 2017-01-04 | BMS equilibrium metal-oxide-semiconductor detection method and device |
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| CN108020777A (en) * | 2017-12-28 | 2018-05-11 | 北京普莱德新能源电池科技有限公司 | The fault detection method and failure detector of battery equalizing circuit |
| CN109557468A (en) * | 2018-12-29 | 2019-04-02 | 浙江吉利汽车研究院有限公司 | BMS passively balanced abatement detecting method, device and equalizing circuit |
| CN116559634B (en) * | 2023-07-11 | 2023-09-12 | 杭州华塑科技股份有限公司 | Circuit fault detection method and device, storage medium and electronic equipment |
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| RU1132686C (en) * | 1982-10-05 | 1993-07-15 | Предприятие П/Я Р-6644 | Method of checking multi-threshold igfet large-scale integrated circuit |
| JPS61126479A (en) * | 1984-11-22 | 1986-06-13 | Sharp Corp | Measuring instrument for mos-fet |
| KR101256952B1 (en) * | 2010-03-05 | 2013-04-25 | 주식회사 엘지화학 | Apparatus and Method for diagnosis of cell balancing unit |
| KR101589198B1 (en) * | 2013-02-19 | 2016-01-28 | 주식회사 엘지화학 | Apparatus and method for diagnosis of cell balancing circuit |
| CN103944240B (en) * | 2014-05-09 | 2016-05-11 | 重庆大学 | Bus type circuit of battery pack balancing and control method thereof |
| CN104377753A (en) * | 2014-09-28 | 2015-02-25 | 浙江超威创元实业有限公司 | Battery management system with field-effect tube breakdown detection function |
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