CN108471151A - Power supply system and driving method - Google Patents
Power supply system and driving method Download PDFInfo
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- CN108471151A CN108471151A CN201810327756.5A CN201810327756A CN108471151A CN 108471151 A CN108471151 A CN 108471151A CN 201810327756 A CN201810327756 A CN 201810327756A CN 108471151 A CN108471151 A CN 108471151A
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- motor
- battery
- single battery
- power supply
- voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Power supply system provided by the invention and driving method, are related to battery technology field.Wherein, power supply system includes battery pack, control device and multiple acquisition actuators.The battery pack includes multiple single batteries, and each actuator that acquires is correspondingly connected with setting with each single battery, so that multiple single batteries can power to motor after being connected in series with, which is separately connected with each acquisition actuator.Control device is used in the solicited message for receiving driving motor, the quantity for the single battery for needing to be powered to motor is calculated according to the solicited message, and corresponding number single battery is determined in multiple single batteries, and control signal is sent to the determining corresponding acquisition actuator of each single battery, it powers to motor after being connected in series with each single battery by each acquisition actuator control determination.By above-mentioned setting, the smaller problem of the adjustable range of the driving voltage to motor in the prior art can be improved.
Description
Technical field
The present invention relates to battery technology fields, in particular to a kind of power supply system and driving method.
Background technology
In order to reach higher energy-saving and emission-reduction, the electric vehicle that pure electric automobile or oil electricity mix is widely used.Wherein,
Power source of the power supply system as electric vehicle, performance largely affect the performance of electric vehicle.Generally, it powers
System can combine to be formed by the connection in series-parallel of multiple single batteries.
Through inventor the study found that in the prior art, generally by potential device to the output voltage of power supply system into
Row is adjusted to obtain the driving voltage for driving motor, thus, exist smaller to the adjustable range of the driving voltage of motor
Problem.
Invention content
In view of this, the purpose of the present invention is to provide a kind of power supply system and driving method, to improve existing skill
The problem smaller to the adjustable range of the driving voltage of motor in art.
To achieve the above object, the embodiment of the present invention adopts the following technical scheme that：
A kind of power supply system, the motor for driving electric vehicle, the power supply system include：
Battery pack, the battery pack include multiple single batteries；
Multiple acquisition actuators, each acquisition actuator is correspondingly connected with setting with each single battery, so that described
Multiple single batteries can power to the motor after being connected in series with；
Control device, the control device are separately connected with each acquisition actuator；
Wherein, the control device is used for when receiving the solicited message for driving the motor, according to the solicited message
The quantity for the single battery for needing to be powered to the motor is calculated, and determines and corresponds in multiple single batteries
Quantity single battery, and control signal is sent to the determining corresponding acquisition actuator of each single battery, to pass through each acquisition
The determining each single battery of actuator control is powered after being connected in series with to the motor.
In the embodiment of the present invention preferably selects, in above-mentioned power supply system, further include：
Voltage detector, which is set to the output port of the battery pack, and connects with the control device
It connects, to detect the output voltage of the battery pack and be sent to the control device.
In the embodiment of the present invention preferably selects, in above-mentioned power supply system, further include：
Current detector, which is set to the output port of the battery pack, and connects with the control device
It connects, to detect the output current of the battery pack and be sent to the control device.
In the embodiment of the present invention preferably selects, in above-mentioned power supply system, the battery pack is multiple, each electricity
Chi Bao is connected in parallel；
Wherein, the control device is additionally operable to be calculated according to the solicited message and needs to be powered the motor
Battery pack quantity, and corresponding number battery pack is determined in multiple battery packs, and into determining each battery pack
The corresponding acquisition actuator of single battery send control signal, with by the determining each battery pack of each acquisition actuator control simultaneously
It powers to the motor after connection connection.
In the embodiment of the present invention preferably selects, in above-mentioned power supply system, the control device includes：
First controller, first controller are multiple, and each monomer in each first controller and a battery pack
The corresponding each acquisition actuator of battery is separately connected；
Second controller, the second controller are separately connected with each first controller, to pass through each first control
Device processed sends control signal to each acquisition actuator.
On the basis of the above, the embodiment of the present invention additionally provides a kind of driving method, is applied to above-mentioned power supply system
Control device, to drive the motor of electric vehicle, the power supply system further includes single battery and acquisition actuator, described
Single battery is multiple, and the acquisition actuator is multiple and is correspondingly arranged with each single battery, wherein the method packet
It includes：
The first solicited message for driving the motor is obtained, and corresponding driving is calculated according to first solicited message
Voltage；
According to the supply voltage of the driving voltage and the single single battery be calculated needs to the motor into
First quantity of the single battery of row power supply；
Determine the first quantity single battery in multiple single batteries, and to determining each single battery pair
The acquisition actuator answered sends control signal, to be connected in series with backward by the determining each single battery of each acquisition actuator control
The motor exports the driving voltage.
In the embodiment of the present invention preferably selects, in above-mentioned driving method, further include：
Judge whether first solicited message changes, if changing, is believed according to the first request after variation
New driving voltage is calculated in breath；
Current need to the electricity is calculated according to the supply voltage of the new driving voltage and single single battery
Second quantity of the single battery that machine is powered, and calculate it is first poor between second quantity and first quantity
Value；
If first difference is more than zero, first difference is determined in each single battery not being powered currently
A single battery, and control signal is sent to the determining corresponding acquisition actuator of each single battery, to be executed by each acquisition
Device is controlled after the first difference single battery is connected in series with the first quantity single battery and is exported to the motor
The new driving voltage；
If first difference is less than zero, first difference is determined in each single battery being currently powered
Single battery, and control signal is sent to the determining corresponding acquisition actuator of each single battery, to pass through each acquisition actuator
The determining each single battery disconnection of control is connected in series with other single batteries, so that the second quantity single battery string
After connection connection the new driving voltage is exported to the motor.
In the embodiment of the present invention preferably selects, in above-mentioned driving method, the power supply system further includes electricity
Detector is pressed, to detect the output voltage of the battery pack, the method further includes：
Obtain the output voltage that the voltage detector detects；
Judging the voltage difference between the output voltage and the driving voltage being calculated according to the first solicited message is
It is no to belong in the first preset range, and when the voltage difference is not belonging to the first preset range, judge the confession to the motor
Electricity exists abnormal.
In the embodiment of the present invention preferably selects, in above-mentioned driving method, the power supply system further includes electricity
Current sensor, to detect the output current of the battery pack, the method further includes：
Obtain the output current that the current detector detects；
It is pre- to judge whether the current differential between the output current and the rated operational current of the motor belongs to second
If in range, and when the current differential is not belonging to the second preset range, it is abnormal to judge that the power supply to the motor exists.
In the embodiment of the present invention preferably selects, in above-mentioned driving method, further include：
Judge whether to receive the second solicited message for stopping the motor；
If receiving second solicited message, acquisition actuator point is corresponded to each single battery being currently powered
Signal Fa Song not be controlled, is disconnected and the company of series connection of other single batteries with controlling corresponding single battery by each acquisition actuator
It connects, so that each single battery stops powering to the motor.
Power supply system provided by the invention and driving method can be controlled respectively by the way that multiple acquisition actuators are arranged
Make whether each single battery is powered to motor, to realize the adjustable range to the driving voltage of motor in zero and each monomer electricity
Between total voltage after the series connection of pond, the adjustable range to the driving voltage of motor is greatly improved, so as to improve the prior art
In the problem smaller to the adjustable range of the driving voltage of motor, and then improve being applicable in for power supply system and driving method
Range.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
Fig. 1 is the application block diagram of power supply system provided in an embodiment of the present invention.
Fig. 2 is the structure diagram of power supply system provided in an embodiment of the present invention.
Fig. 3 is another structure diagram of power supply system provided in an embodiment of the present invention.
Fig. 4 is the connection diagram of power supply system provided in an embodiment of the present invention.
Fig. 5 is another connection diagram of power supply system provided in an embodiment of the present invention.
Fig. 6 is the flow diagram of driving method provided in an embodiment of the present invention.
Fig. 7 is another flow diagram of driving method provided in an embodiment of the present invention.
Fig. 8 is another flow diagram of driving method provided in an embodiment of the present invention.
Fig. 9 is another flow diagram of driving method provided in an embodiment of the present invention.
Figure 10 is another flow diagram of driving method provided in an embodiment of the present invention.
Icon：100- power supply systems；110- battery packs；111- single batteries；120- control devices；121- first is controlled
Device；123- second controllers；130- acquires actuator；140- voltage detectors；150- current detectors；200- motors.
Specific implementation mode
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 only
It 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
The component of embodiment can be arranged and be designed with a variety of different configurations.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.In description of the invention
In, term " first ", " second ", " third ", " the 4th " etc. are only used for distinguishing description, and should not be understood as only or imply opposite
Importance.
In the description of the present invention unless specifically defined or limited otherwise, term " setting ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The connection in portion.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood with concrete condition
Body meaning.
As shown in Figure 1, an embodiment of the present invention provides a kind of power supply system 100, the motor for driving electric vehicle
200.Wherein, the electric vehicle is either pure electric automobile, can also be the electric vehicle of oily electricity mixing.
In conjunction with Fig. 2, in the present embodiment, the power supply system 100 may include battery pack 110, control device 120 and
Multiple acquisition actuators 130.The battery pack 110 may include multiple single batteries 111.Each acquisition actuator 130 with
Each single battery 111 is correspondingly connected with setting, so that the multiple single battery 111 can be to the motor after being connected in series with
200 power supplies.
Wherein, the control device 120 is separately connected with each acquisition actuator 130, is receiving the driving electricity
When the solicited message of machine 200, the single battery for needing to be powered to the motor 200 is calculated according to the solicited message
111 quantity, and corresponding number single battery 111 is determined in multiple single batteries 111, and to determining each monomer
111 corresponding acquisition actuator 130 of battery sends control signal, to control determining each monomer by each acquisition actuator 130
Battery 111 is powered after being connected in series with to the motor 200.
Optionally, determine that the quantity for the single battery 111 for needing to power is unrestricted according to solicited message, it can be according to reality
Border is configured using needs.For example, the driving voltage that motor 200 currently needs can be calculated, then according to each monomer electricity
The supply voltage in pond 111 carries out permutation and combination so that each single battery 111 determined can be exported after being connected in series with it is described
Driving voltage.
Further, the voltage and current for ease of being exported to the battery pack 110 is directly effectively monitored, at this
In embodiment, in conjunction with Fig. 3, the power supply system 100 can also include voltage detector 140 and current detector 150.
Wherein, the voltage detector 140 is set to the output port of the battery pack 110, and with the control device
120 connections, to detect the output voltage of the battery pack 110 and be sent to the control device 120.The current detector
150 are set to the output port of the battery pack 110, and are connect with the control device 120, to detect the battery pack 110
Output current and be sent to the control device 120.
In conjunction with Fig. 4, in the present embodiment, the battery pack 110 can be multiple, and each battery pack 110 can be in parallel
Connection.The control device 120 is additionally operable to be calculated what needs were powered the motor 200 according to the solicited message
The quantity of battery pack 110, and corresponding number battery pack 110 is determined in multiple battery packs 110, and to determining each electricity
111 corresponding acquisition actuator 130 of single battery in pond packet 110 sends control signal, to be controlled by each acquisition actuator 130
The determining each battery pack 110 of system is powered after being connected in parallel to the motor 200.
Wherein, the solicited message may include the specified driving current value of the motor 200, rotor impedance value etc.
Information, the control device 120 can be based on the driving current value and the impedance value, be calculated what needs were powered
The quantity of battery pack 110.For example, the driving current value is 50A, the impedance value is 20 Ω, the output of a battery pack 110
Voltage is 100V, and the output current that a battery pack 110 can be calculated is 5A, can pass through 10 battery packs in parallel
110 to export the electric current of 50A.
In conjunction with Fig. 5, in the present embodiment, for ease of being controlled to 110 corresponding acquisition actuator 130 of each battery pack
System, in the present embodiment, the control device 120 may include the first controller 121 and second controller 123.
Wherein, first controller 121 be it is multiple, and each first controller 121 with it is each in a battery pack 110
The corresponding each acquisition actuator of single battery 111 130 is separately connected.The second controller 123 and each first controller
121 are separately connected, to send control signal to each acquisition actuator 130 by each first controller 121.
In conjunction with Fig. 6, the embodiment of the present invention also provides a kind of driving method can be applied to above-mentioned power supply system 100.
Wherein, each process step that the driving method includes can be executed by the control device 120.Below in conjunction with figure
6 pairs of driving methods are explained.
Step S110 obtains the first solicited message for driving the motor 200, and is calculated according to first solicited message
To corresponding driving voltage.
In the present embodiment, first solicited message may include the rotating speed of motor 200, to be calculated by the rotating speed
The driving voltage that the motor 200 is applied to needs.
Needs are calculated according to the supply voltage of the driving voltage and the single single battery 111 in step S120
To the first quantity of the single battery 111 that the motor 200 is powered.
In the present embodiment, it is contemplated that in a battery pack 110 between the supply voltage of concatenated each single battery 111
Difference is smaller, therefore can be by regarding the supply voltage of single single battery 111 as the single battery 111 for calculating and needing to power
Quantity parameter.For example, when driving voltage is 100V, the supply voltage of single single battery 111 is 10V, it is calculated
The first quantity can be 10.
Wherein, the supply voltage of the single single battery 111 can be a preset fixed value, can also be acquisition
Any one single battery 111 current voltage, can also be the mean value of the current voltage of each single battery 111 of acquisition,
It is not specifically limited in the present embodiment, is configured according to practical application request.
Step S130, determines the first quantity single battery 111 in multiple single batteries 111, and to true
Fixed 111 corresponding acquisition actuator 130 of each single battery sends control signal, to be controlled really by each acquisition actuator 130
Fixed each single battery 111 to the motor 200 exports the driving voltage after being connected in series with.
Optionally, determine that the mode of the first quantity single battery 111 is unrestricted in multiple single batteries 111, it can
To be configured according to practical application request, for example, either random selection, can also be to preset to each single battery
111 carry out priority setting, can also be to be selected according to the current capacities of each single battery 111.
Further, it is contemplated that electric vehicle the problem of there is speed changes in use, corresponding driving motor 200
Voltage can change, therefore, in the present embodiment, in conjunction with Fig. 7, the driving method can also include step
S140, step S150, step S160 and step S170.
Step S140, judges whether first solicited message changes, if changing, according to after variation
New driving voltage is calculated in one solicited message.
In the present embodiment, during the use of electric vehicle, understand the case where there is acceleration or decelerations, therefore, meeting
First solicited message is caused to change, that is to say, that the rotating speed of motor 200 can change in the first solicited message, with
The driving voltage being calculated based on the rotating speed is set to change.
Step S150 is calculated currently according to the supply voltage of the new driving voltage and single single battery 111
The second quantity of the single battery 111 being powered to the motor 200 is needed, and calculates second quantity and described first
The first difference between quantity.
In the present embodiment, step S150 is referred to the explanation to step S120.
Step S160 is determined if first difference is more than zero in each single battery 111 not being powered currently
The first difference single battery 111, and send control to determining 111 corresponding acquisition actuator 130 of each single battery
Signal, to control the first difference single battery 111 and the first quantity monomer electricity by each acquisition actuator 130
Pond 111 to the motor 200 exports the new driving voltage after being connected in series with.
In the present embodiment, if desired electric vehicle is accelerated, that is, the rotating speed of motor 200 is needed to increase, it can
By the driving voltage for increasing motor 200, accordingly to be needed for example, 120V can be increased on the basis of above-mentioned 100V
Second quantity of the single battery 111 being powered can be 12.That is, first difference is 2, and therefore, Ke Yi
2 single batteries 111 are determined in the current each single battery 111 not being powered, and by 2 single batteries 111 and currently
10 single batteries 111 being powered are connected in series with, to export the driving voltage of 120V jointly.
Step S170 determines institute if first difference is less than zero in each single battery 111 being currently powered
The first difference single battery 111 is stated, and control letter is sent to determining 111 corresponding acquisition actuator 130 of each single battery
Number, it is disconnected and the company of series connection of other single batteries 111 with controlling determining each single battery 111 by each acquisition actuator 130
It connects, so that the second quantity single battery 111 to the motor 200 exports the new driving voltage after being connected in series with.
In the present embodiment, if desired slow down to electric vehicle, that is, the rotating speed of motor 200 is needed to reduce, it can
By the driving voltage for reducing motor 200, accordingly to be needed for example, 80V can be decreased on the basis of above-mentioned 100V
Second quantity of the single battery 111 being powered can be 8.That is, first difference is -2, and therefore, Ke Yi
2 single batteries 111 are determined in each single battery 111 being currently powered, and disconnect 2 single batteries 111 with it is current
Other 8 single batteries 111 being powered are connected in series with, to export the drive of 80V jointly by 8 single batteries 111
Dynamic voltage.
Wherein, step S160 and step S170 is executed, it can be in a manner of determination the first difference single battery 111
With reference to the explanation to step S130.
Further, it is contemplated that electric vehicle in use, needs for example, an emergency situation is encountered in the shorter time
Interior parking, that is to say, that power supply of each single battery 111 to motor 200 in cutting off battery pack 110 quickly is needed, in this reality
It applies in example, in conjunction with Fig. 8, the driving method can also include step S180 and step S190.
Step S180 judges whether to receive the second solicited message for stopping the motor 200.
Step S190 receives second solicited message, then is adopted to the correspondence of each single battery 111 being currently powered
Collection actuator 130 sends respectively control signal, with by each acquisition actuator 130 control corresponding single battery 111 disconnection and
Other single batteries 111 are connected in series with, so that each single battery 111 stops powering to the motor 200.
By the above method, it can avoid passing through and execute step S140, step S150 and step S170 to realize deceleration
To zero and existing processing procedure is longer, the problem of cannot stopping being powered motor 200 within a short period of time, greatly carries
The high adaptability to changes of reply emergency.
Further, it is contemplated that may be due to the difference between each single battery 111 in the power supply process of battery pack 110
Or the failure of single battery 111, and the voltage exported after causing determining each single battery 111 for power supply to be connected in series with
Be calculated between driving voltage or the electric current and the rated operational current of motor 200 of output between there are larger error, into
And be difficult to reliably and efficiently drive motor 200 according to solicited message, therefore, in the present embodiment, in conjunction with Fig. 9 and figure
10, for voltage error, the driving method can also include step S210 and step S220, for current error, institute
It can also includes step S230 and step S240 to state driving method.
Step S210 obtains the output voltage that the voltage detector 140 detects.
Step S220, the electricity between judging the output voltage and the driving voltage that is calculated according to the first solicited message
Whether pressure difference belongs in the first preset range, and when the voltage difference is not belonging to the first preset range, judges to described
The power supply of motor 200 exists abnormal.
In the present embodiment, can by two of the voltage detector 140 detection ports respectively with the battery pack 110
Anode connected with cathode, to detect the output voltage of the battery pack 110.It wherein, can be with after judgement power supply is there are exception
Each single battery 111 is detected to exclude the power supply of abnormal single battery 111, prompt message can also be generated simultaneously
It is sent to associated terminal device by communication device, so that user can learn the case where there are abnormal electrical power supplies in time.
Step S230 obtains the output current that the current detector 150 detects.
Step S240 judges that the current differential between the output current and the rated operational current of the motor 200 is
It is no to belong in the second preset range, and when the current differential is not belonging to the second preset range, judge to the motor 200
Power supply exists abnormal.
In the present embodiment, both the current detector 150 can be connected on the battery pack 110 and the motor
It, can also be by the output port near zone of the battery pack 110 to detect the output current of the battery pack 110 between 200
Current detector 150 is set to detect the output current of battery pack 110 by electromagnetic induction.Wherein, in judgement power supply, there are different
Chang Hou can be detected each single battery 111 to exclude the power supply of abnormal single battery 111, can also generate
Prompt message is simultaneously sent to associated terminal device by communication device, so that user can learn that there are abnormal electrical power supplies in time
Situation.
Optionally, the specific size of first preset range and second preset range is unrestricted, can basis
Practical application request is configured, for example, the performance of each single battery 111 is higher or consistent higher, first preset range
It can be smaller with second preset range.
In conclusion power supply system 100 provided by the invention and voltage drive method, by the way that multiple acquisition actuators are arranged
130, it can control whether each single battery 111 is powered to motor 200 respectively, to realize the driving voltage to motor 200
Adjustable range connect with each single battery 111 zero after total voltage between, greatly improve the driving to motor 200 electricity
The adjustable range of pressure, so as to improve problem smaller to the adjustable range of the driving voltage of motor 200 in the prior art, Jin Erti
The high scope of application of power supply system 100 and driving method.
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, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of power supply system, the motor for driving electric vehicle, which is characterized in that the power supply system includes：
Battery pack, the battery pack include multiple single batteries；
Multiple acquisition actuators, each acquisition actuator is correspondingly connected with setting with each single battery, so that the multiple
Single battery can power to the motor after being connected in series with；
Control device, the control device are separately connected with each acquisition actuator；
Wherein, the control device is used for when receiving the solicited message for driving the motor, is calculated according to the solicited message
The quantity for the single battery for needing to be powered the motor is obtained, and determines corresponding number in multiple single batteries
A single battery, and control signal is sent to the determining corresponding acquisition actuator of each single battery, to be executed by each acquisition
The determining each single battery of device control is powered after being connected in series with to the motor.
2. power supply system according to claim 1, which is characterized in that further include：
Voltage detector, which is set to the output port of the battery pack, and is connect with the control device, with
It detects the output voltage of the battery pack and is sent to the control device.
3. power supply system according to claim 1, which is characterized in that further include：
Current detector, which is set to the output port of the battery pack, and is connect with the control device, with
It detects the output current of the battery pack and is sent to the control device.
4. according to the power supply system described in claim 1-3 any one, which is characterized in that the battery pack is multiple, each institute
Battery pack is stated to be connected in parallel；
Wherein, the control device is additionally operable to that the electricity for needing to be powered the motor is calculated according to the solicited message
The quantity of Chi Bao, and corresponding number battery pack is determined in multiple battery packs, and the list into determining each battery pack
The corresponding acquisition actuator of body battery sends control signal, to be connected by the determining each battery pack parallel connection of each acquisition actuator control
It powers to the motor after connecing.
5. power supply system according to claim 4, which is characterized in that the control device includes：
First controller, first controller are multiple, and each single battery in each first controller and a battery pack
Corresponding each acquisition actuator is separately connected；
Second controller, the second controller are separately connected with each first controller, to pass through each first controller
Control signal is sent to each acquisition actuator.
6. a kind of driving method is applied to the control device of the power supply system described in claim 1-5 any one, to drive
The motor of dynamic electric vehicle, which is characterized in that the power supply system further includes single battery and acquisition actuator, the monomer
Battery is multiple, and the acquisition actuator is multiple and is correspondingly arranged with each single battery, wherein the method includes：
The first solicited message for driving the motor is obtained, and corresponding driving electricity is calculated according to first solicited message
Pressure；
Needs are calculated according to the supply voltage of the driving voltage and the single single battery to supply the motor
First quantity of the single battery of electricity；
The first quantity single battery is determined in multiple single batteries, and corresponding to determining each single battery
It acquires actuator and sends control signal, to be controlled after determining each single battery is connected in series with to described by each acquisition actuator
Motor exports the driving voltage.
7. driving method according to claim 6, which is characterized in that further include：
Judge whether first solicited message changes, if changing, according to the first solicited message meter after variation
Calculation obtains new driving voltage；
According to the supply voltage of the new driving voltage and single single battery be calculated it is current need to the motor into
Second quantity of the single battery of row power supply, and calculate the first difference between second quantity and first quantity；
If first difference is more than zero, determine that first difference is single in each single battery not being powered currently
Body battery, and control signal is sent to the determining corresponding acquisition actuator of each single battery, to pass through each acquisition actuator control
It makes after the first difference single battery is connected in series with the first quantity single battery to described in motor output
New driving voltage；
If first difference is less than zero, the first difference monomer is determined in each single battery being currently powered
Battery, and control signal is sent to the determining corresponding acquisition actuator of each single battery, to be controlled by each acquisition actuator
Determining each single battery disconnection is connected in series with other single batteries, so that the second quantity single battery series connection connects
After connecing the new driving voltage is exported to the motor.
8. the driving method described according to claim 6 or 7, which is characterized in that the power supply system further includes voltage inspection
Device is surveyed, to detect the output voltage of the battery pack, the method further includes：
Obtain the output voltage that the voltage detector detects；
Judge whether the voltage difference between the output voltage and the driving voltage being calculated according to the first solicited message belongs to
In in the first preset range, and when the voltage difference is not belonging to the first preset range, the power supply of the motor is deposited in judgement
In exception.
9. the driving method described according to claim 6 or 7, which is characterized in that the power supply system further includes electric current inspection
Device is surveyed, to detect the output current of the battery pack, the method further includes：
Obtain the output current that the current detector detects；
Judge whether the current differential between the output current and the rated operational current of the motor belongs to the second default model
In enclosing, and when the current differential is not belonging to the second preset range, it is abnormal to judge that the power supply to the motor exists.
10. the driving method described according to claim 6 or 7, which is characterized in that further include：
Judge whether to receive the second solicited message for stopping the motor；
If receiving second solicited message, corresponds to acquisition actuator to each single battery being currently powered and send out respectively
Control signal is sent, is disconnected with to control corresponding single battery by each acquisition actuator and being connected in series with other single batteries,
So that each single battery stops powering to the motor.
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| CN201810327756.5A CN108471151A (en) | 2018-04-12 | 2018-04-12 | Power supply system and driving method |
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| CN201810327756.5A CN108471151A (en) | 2018-04-12 | 2018-04-12 | Power supply system and driving method |
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| CN109184842A (en) * | 2018-10-12 | 2019-01-11 | 福泰动力有限公司 | Valve actuator and valve-driving system |
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