CN108306078A - Power battery heating system and method - Google Patents
Power battery heating system and method Download PDFInfo
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- CN108306078A CN108306078A CN201810187389.3A CN201810187389A CN108306078A CN 108306078 A CN108306078 A CN 108306078A CN 201810187389 A CN201810187389 A CN 201810187389A CN 108306078 A CN108306078 A CN 108306078A
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- power battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention provides a kind of power battery heating system and methods, and the system comprises the first temperature sensor, controller and motors, and first temperature sensor is installed to the power battery；The controller includes temperature sampling unit and heat control unit, wherein：The temperature sampling unit, the temperature for obtaining the power battery in real time by first temperature sensor；The heat control unit, for when the temperature of the power battery meets preset condition, being run using the energy hole motor zero-turn square that the power battery provides.The present invention is heated by power motor for power battery, and power battery heating can be realized without external auxiliary heating equipment, not only reduce cost, reduce the complexity of system design, and power battery is heated evenly.
Description
Technical field
The present invention relates to field of lithium ion battery, more specifically to a kind of power battery heating system and method.
Background technology
With the development of new energy electric motor vehicle, lithium ion battery is with its voltage height, and capacity is big, small, light weight, work
The advantages that temperature range is wide is widely used.Although lithium ion battery is widely used due to its many advantage,
While lithium ion battery applications field is widened, some problems are also exposed, lithium ion battery cryogenic property is barely satisfactory always,
Constrain the use scope of battery.For common electric vehicle lithium-ion-power cell at -10 DEG C, capacity and operating voltage can be bright
Aobvious to reduce, performance can obviously deteriorate at -20 DEG C, and specific discharge capacity rapid drawdown is only capable of 30% or so of specific capacity when the temperature remains within the normal range.And
And in low temperature, there is also the risks for generating dendrite arm, causing internal short-circuit of battery for lithium ion charging.
Currently on the market, in low temperature environment, using lithium ion battery, there are two kinds of situations：One kind is without using heating state；
Another kind is heats using external accessory, such as electric heating piece, Electric radiant Heating Film, air-conditioning etc..
When being heated without using outside, lithium ion battery discharging efficiency is relatively low, and seriously affects the power of battery pack, uses
Service life and safety.And lithium ion battery is heated using external auxiliary heating device, not only increase cost and is
The complexity for design of uniting, and external auxiliary heating device is used, heat ecto-entad transmits, and the lithium ion battery for being is heated not
Uniformly.
Invention content
The technical problem to be solved in the present invention is, for above-mentioned lithium ion battery low temperature environment can discharge capacity, electric discharge
Less efficient problem provides a kind of power battery heating system and method.
The technical solution that the present invention solves above-mentioned technical problem is to provide a kind of power battery heating system, including first
Temperature sensor, controller and motor, and first temperature sensor is installed to the power battery；The controller packet
Temperature sampling unit and heat control unit are included, wherein：The temperature sampling unit, for passing through first temperature sensing
Device obtains the temperature of the power battery in real time；The heat control unit, it is pre- for meeting in the temperature of the power battery
If when condition, being run using the energy hole motor zero-turn square that the power battery provides.
In power battery heating system of the present invention, the controller includes inversion unit, the inversion unit
Include switch on the bridge pipe and bridge switch pipe including multiphase bridge arm and each phase bridge arm；The heat control unit is in control motor
When zero-turn square is run：Make the bridge switch pipe of an at least phase bridge arm in the switch on the bridge pipe and other bridge arms of an at least phase bridge arm
It is held on, and other switch on the bridge pipes and bridge switch pipe is made to remain open.
In power battery heating system of the present invention, the system also includes be installed to the second of the controller
Temperature sensor and the third temperature sensor for being installed to the motor, the temperature sampling unit are passed by the second temperature
The real-time acquisition controller temperature of sensor, and pass through the third temperature sensor motor in real time temperature；
The preset condition includes：The temperature of the power battery is less than first threshold, and the controller temperature is no more than
The limiting value of the controller normal work, and the motor temperature is no more than the limiting value of motor normal work.
In power battery heating system of the present invention, the controller includes for making what vehicle normally started to open
Dynamic control unit；The heat control unit rises to second threshold in the temperature of the power battery by being less than first threshold
When, it controls the motor and stops the operation of zero-turn square, and send signal to the startup control unit to make the startup control unit
Into working condition.
In power battery heating system of the present invention, the heat control unit is in control motor zero-turn square operation
When, so that the electric current for being output to the motor is increased by zero and is remained unchanged when reaching preset value.
The present invention also provides a kind of power battery heating means, the power battery powers to controller and by the control
Device controls motor operation, the described method comprises the following steps：
Acquire the temperature of the power battery in real time by the first temperature sensor；
When the temperature of the power battery meets preset condition, the energy hole motor that is provided using the power battery
Zero-turn square is run.
In power battery heating means of the present invention, the controller includes inversion unit, the inversion unit
Include switch on the bridge pipe and bridge switch pipe including multiphase bridge arm and each phase bridge arm；The controller is in control motor zero-turn square
When operation：The bridge switch pipe of an at least phase bridge arm in at least switch on the bridge pipe of a phase bridge arm and other phase bridge arms is set to keep
Conducting, and other switch on the bridge pipes and bridge switch pipe is made to remain open.
In power battery heating means of the present invention, the method further includes：Pass through second temperature sensor reality
When acquisition controller temperature and pass through third temperature sensor motor in real time temperature；The preset condition includes：It is described
The temperature of power battery is less than first threshold, and the controller temperature is no more than the limiting value of controller normal work, and
The motor temperature is no more than the limiting value of motor normal work.
In power battery heating means of the present invention, the power battery temperature by being less than in first threshold
When being raised to second threshold, the controller controls the motor and stops the operation of zero-turn square, and controls vehicle and normally start.
In power battery heating means of the present invention, the controller makes when controlling the operation of motor zero-turn square
The electric current for being output to the motor increases by zero and is remained unchanged when reaching preset value.
The power battery heating system and method for the present invention is heated by power motor for power battery, without outer
Power battery heating can be realized in portion's ancillary heating equipment, not only reduces cost, reduces the complexity of system design, and
Power battery is heated evenly.
Description of the drawings
Fig. 1 is the schematic diagram of power battery heating system embodiment of the present invention；
Fig. 2 is the schematic diagram of power battery heating system embodiment computer heating control of the present invention；
Fig. 3 is the curve synoptic diagram of exciting current in power battery heating system embodiment of the present invention；
Fig. 4 is the flow diagram of power battery heating means embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
When the present invention (such as the winter in the north) relatively low for environment temperature, because vehicle long-term (such as an evening) is in rest
State and cause temperature of powered cell relatively low, in order to improve discharging efficiency, the service life of power battery (battery pack), and to dynamic
Power battery carries out pre-add heat treatment.The present invention, which can also be reduced, leads to power battery charging when temperature is relatively low lithium simultaneously shape is precipitated
At dendrite arm, the possibility of power battery internal short-circuit is caused.
As shown in Figure 1, being the schematic diagram of power battery heating system embodiment of the present invention, above-mentioned power battery is concretely
Lithium ion battery, and the power battery heating system is particularly applicable to new-energy automobile etc..Power battery in the present embodiment
Heating system includes the first temperature sensor 4, controller 2 and motor 3, and the first temperature sensor 4 is installed to power battery 1
(such as being affixed on the surface of power battery 1).Controller 2 includes temperature sampling unit 21 and heat control unit 22, medium temperature
Spend the temperature that sampling unit 21 is used to obtain power battery 1 in real time by the first temperature sensor 4；Heat control unit 22 is used for
When the temperature of power battery 1 meets preset condition, run using the 3 zero-turn square of energy hole motor that power battery 1 provides.
Above controller 2 can be existing new-energy automobile in electric machine controller, and temperature sampling unit 21 and add
Thermal control units 22 are then in combination with the software sharing operated in electric machine controller (i.e. the chip of electric machine controller).Certainly, exist
In practical application, the hardware device independently of electric machine controller can also be used in controller 2, but this can increase corresponding cost.
Particularly, temperature sampling unit 21 can be obtained by automobile control unit 5 (Vehicle Control Unit, VCU)
The temperature of power battery 1 is taken, i.e., automobile control unit 5 obtains the electric signal that the first temperature sensor 4 generates, and electric signal is turned
After being changed to temperature signal, control is sent to by CAN (Controller Area Network, controller local area network) communications
Device 2.
When heat control unit 22 is run using the 3 zero-turn square of energy hole motor that power battery 1 provides, motor 3
There is electric current to flow through in coil, but motor 3 is still in stationary state, and power battery 1 is then due to there is an electric current outflow, temperature will be by
Gradually rise.
Above-mentioned power battery heating system is heated by power motor for power battery, is set without external auxiliary heating
It is standby that power battery heating can be realized, cost is not only reduced, reduces the complexity of system design, and since heat is by moving
Power battery itself generates, therefore is heated evenly.
As shown in Fig. 2, above controller 2 may also include inversion unit 23, the inversion unit 23 include multiphase bridge arm (such as
U, V, W three-phase) and each phase bridge arm respectively include switch on the bridge pipe and bridge switch pipe.Heat control unit 22 is in control motor
When 3 zero-turn squares are run, the lower bridge of an at least phase bridge arm in at least switch on the bridge pipe of a phase bridge arm and other phase bridge arms is made to open
Close pipe to be held on, and other switch on the bridge pipes and bridge switch pipe made to remain open, for example, can make switch on the bridge pipe Q1 and
Bridge switch pipe Q6 is held on, and switch on the bridge pipe Q3, Q5 and bridge switch pipe Q2, Q4 is made to remain open, in this way, electric current from
The anode outflow of power battery 1 flows into the coil of motor 3, then flow out through bridge switch pipe Q6 after switch on the bridge pipe Q1,
It is eventually returned to the cathode of power battery 1, is formed into a loop.
In above process, the heat control unit 22 of controller 2 is by zero direct torque, and control the electric current of outflow
Size makes the temperature of power battery 1 slowly rise, to achieve the purpose that power battery heats.Specifically, heat control unit 22
Battery is opened when the temperature of power battery 1 is less than some temperature t0 and preheats (operation of motor zero-turn square), and in power battery 1
Temperature stop battery preheating when being heated to t1, and different mode of heatings is done according to different temperature spots and is controlled.With phosphoric acid
For lithium iron battery, optimal operating temperature range is 10-50 degree, when the temperature of power battery 1 is less than 10 degree, computer heating control
The operation of the control 3 zero-turn square of motor of unit 22 (such as the switch on the bridge pipe Q1 of inversion unit 23 and bridge switch pipe Q6 is made to lead
It is logical), power battery 1 is heated；After the temperature of power battery 1 reaches setting value t1 (for 15 degree), computer heating control
Unit 22 terminates power battery preheating, such as all switch on the bridge pipe Q1, Q3, Q5 of inversion unit 23 and all lower bridges is made to open
Pipe Q2, Q4, Q6 is closed to disconnect.
3 zero-turn square of the motor operation control of above-mentioned heat control unit 22 can receive automobile starting instruction and automobile
It executes before not actuated, i.e., first power battery 1 is preheated before automobile starting.Meanwhile controller 3 further includes for making vehicle
The startup control unit normally started.Heat control unit 22 power battery 1 temperature by being less than first threshold (on such as
The setting value t0 stated) when rising to second threshold (setting value t1 as escribed above), control motor 3 stops the operation of zero-turn square, and
So that startup control unit is entered working condition to control unit transmission signal is started, starts normal startup automobile program.
Certainly, 3 zero-turn square of the motor operation control of above-mentioned heat control unit 22 can also charge to power battery 1
Shi Zhihang, such as when charging plug is plugged into vehicle charging mouth, execute.Heat control unit 22 power battery 1 temperature by low
When first threshold (setting value t0 as escribed above) rises to second threshold (setting value t1 as escribed above), motor 3 is controlled
Stop the operation of zero-turn square, then signal can be sent to the charging module of automobile, to which charging module can start to fill to power battery 1
Electricity.
Since during the self-heating of power battery 1, the size of heated current determines the speed of heating, is in simultaneously
Device in entire circuit can all generate heat, so electric current for heating should not be too large.It is opened when heat control unit 22 has issued
Pipe instruction (such as making switch on the bridge pipe Q1 and bridge switch pipe the Q6 conducting of inversion unit 23), that is, open power electric
After the active heating function in pond 1, inversion unit 23 issues exciting current, and exciting current size is according to the emulation knot of motor 3
Fruit determines.It (is embodied on vehicle in order to ensure that the rotor-position of the motor 3 when issuing exciting current of controller 2 is motionless and is exactly
Vehicle is not shaken), need to ensure that the rotation of motor 3 becomes that dead-center position is accurate, and electromagnetic torque at this time is,
As the torque current i of motor 3q=0 and when accurate zero, electromagnetic torque 0.Wherein exciting current idLoad
Curve is as shown in Figure 3：It is output to the exciting current i of motor 3dIt is gradually increased by zero, and reaches Ip at a moment and keep permanent
Fixed constant, until the temperature of power battery 1 reaches second threshold, the size needs of Ip are determined according to the radiating condition of whole system
It is fixed, such as determined by testing.
Since when power battery 1 heats, controller 2 and motor 3 can also generate heat simultaneously, and the maximum value of Ip should make most
In the case of difference, cannot cause control and motor Wen Sheng be more than its normal work limiting value (value of Ip is usually no more than specified
The half of electric current).For this purpose, can above-mentioned power battery heating system increase be installed to controller 2 second temperature sensor and
It is installed to the third temperature sensor of motor 3, temperature sampling unit 21 passes through the real-time acquisition controller of second temperature sensor 2
Temperature, and pass through the temperature of third temperature sensor motor in real time 3.Heat control unit 22 does not only surpass in controller temperature
Cross controller 2 normal work limiting value, and motor temperature be no more than motor 3 work normally limiting value when, control motor 3 zero
Torque operation (while the temperature of power battery 1 is less than first threshold).
As shown in figure 4, be the schematic diagram of power battery heating means embodiment of the present invention, above-mentioned power battery is to controller
It powers and motor operation is controlled by controller, this approach includes the following steps：
S41：Acquire the temperature of power battery in real time by the first temperature sensor.Above-mentioned first temperature sensor can be installed
To power battery (such as being affixed on the surface of power battery), and the temperature of powered cell gatherer process can pass through automobile control unit
It realizes, i.e., automobile control unit obtains the electric signal that the first temperature sensor generates, and after converting electrical signals to temperature signal,
It is sent to controller by CAN communication.
S42：When the temperature of power battery meets preset condition, the energy hole motor zero-turn of power battery offer is used
Square is run.In this step, controller is by zero direct torque, and controls the size of the electric current of outflow, makes the temperature of power battery
Degree slowly rises, to achieve the purpose that power battery heats.
Specifically, controller includes inversion unit, and inversion unit includes multiphase bridge arm and each phase bridge arm includes that upper bridge is opened
Close pipe and bridge switch pipe；Controller control motor zero-turn square operation when, make at least switch on the bridge pipe of a phase bridge arm and
The bridge switch pipe of an at least phase bridge arm is held in other phase bridge arms, and makes other switch on the bridge pipes and bridge switch
Pipe remains open.
Particularly, controller makes the electric current for being output to motor increase simultaneously by zero when controlling the operation of motor zero-turn square
It is remained unchanged when reaching preset value, to ensure the safety of whole system.
Since when power battery heats, controller and motor can also generate heat simultaneously, therefore the above method may also include：It is logical
Cross the real-time acquisition controller temperature of second temperature sensor and by third temperature sensor motor in real time temperature；Accordingly
Preset condition include：The temperature of power battery is less than first threshold, and controller temperature is no more than the pole of controller normal work
Limit value, and motor temperature is no more than the limiting value of motor normal work.Once controller temperature is more than controller normal work
Limiting value or motor temperature are more than the limiting value of motor normal work, and controller terminates to motor and exports zero-turn square excitation
Electric current.
Above-mentioned steps S41, S42 can receive automobile starting instruction and automobile it is not actuated before execute, i.e., opened in automobile
First power battery is preheated before dynamic.When the temperature of power battery rises to second threshold by being less than first threshold, control
Device controls motor and stops the operation of zero-turn square, and controls vehicle and normally start.
Certainly, above-mentioned steps S41, S42 can also be executed when charging to power battery, such as charging plug is plugged into
It is executed when automobile is to charge port.Controller is when the temperature of power battery rises to second threshold by being less than first threshold, control
Motor stops the operation of zero-turn square, then can send signal to the charging module of automobile, charging module can start to fill to power battery
Electricity.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (10)
1. a kind of power battery heating system, which is characterized in that including the first temperature sensor, controller and motor, and institute
It states the first temperature sensor and is installed to the power battery；The controller includes temperature sampling unit and computer heating control list
Member, wherein：The temperature sampling unit, the temperature for obtaining the power battery in real time by first temperature sensor
Degree；The heat control unit, for when the temperature of the power battery meets preset condition, being carried using the power battery
The energy hole motor zero-turn square of confession is run.
2. power battery heating system according to claim 1, which is characterized in that the controller further includes inversion list
Member, the inversion unit includes multiphase bridge arm, and each phase bridge arm includes switch on the bridge pipe and bridge switch pipe；
The heat control unit control motor zero-turn square operation when, make at least switch on the bridge pipe of a phase bridge arm and other
The bridge switch pipe of an at least phase bridge arm is held in phase bridge arm, and other switch on the bridge pipes and bridge switch pipe is made to keep disconnected
It opens.
3. power battery heating system according to claim 1, which is characterized in that described the system also includes being installed to
The second temperature sensor of controller and the third temperature sensor for being installed to the motor, the temperature sampling unit pass through institute
The real-time acquisition controller temperature of second temperature sensor is stated, and passes through the third temperature sensor motor in real time temperature；
The preset condition includes：The temperature of the power battery is less than first threshold, and the controller temperature is no more than described
The limiting value of controller normal work, and the motor temperature is no more than the limiting value of motor normal work.
4. power battery heating system according to claim 3, which is characterized in that the controller includes for making vehicle
The startup control unit normally started；The heat control unit is risen in the temperature of the power battery by being less than first threshold
When to second threshold, controls the motor and stop the operation of zero-turn square, and send signal to the startup control unit to make described open
Dynamic control unit enters working condition.
5. power battery heating system according to claim 1, which is characterized in that the heat control unit is in control electricity
When machine zero-turn square is run, the electric current for being output to the motor is made to increase by zero and be remained unchanged when reaching preset value.
6. a kind of power battery heating means, the power battery powers to controller and by controller control motor fortune
Row, which is characterized in that the described method comprises the following steps：
Acquire the temperature of the power battery in real time by the first temperature sensor；
When the temperature of the power battery meets preset condition, the energy hole motor zero-turn that is provided using the power battery
Square is run.
7. power battery heating means according to claim 6, which is characterized in that the controller includes inversion unit,
The inversion unit includes multiphase bridge arm and each phase bridge arm includes switch on the bridge pipe and bridge switch pipe；
The controller is when controlling the operation of motor zero-turn square, in the switch on the bridge pipe and other bridge arms that make an at least phase bridge arm
The bridge switch pipe of an at least phase bridge arm is held on, and other switch on the bridge pipes and bridge switch pipe is made to remain open.
8. power battery heating means according to claim 6, which is characterized in that the method further includes：
By the real-time acquisition controller temperature of second temperature sensor and pass through third temperature sensor motor in real time temperature
Degree；
The preset condition includes：The temperature of the power battery is less than first threshold, and the controller temperature is no more than described
The limiting value of controller normal work, and the motor temperature is no more than the limiting value of motor normal work.
9. power battery heating means according to claim 8, which is characterized in that the power battery temperature by low
When first threshold rises to second threshold, the controller controls the motor and stops the operation of zero-turn square, and controls vehicle just
Often start.
10. power battery heating means according to claim 6, which is characterized in that the controller is in control motor zero
When torque is run, the electric current for being output to the motor is made to increase by zero and be remained unchanged when reaching preset value.
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| CN201810187389.3A CN108306078A (en) | 2018-03-07 | 2018-03-07 | Power battery heating system and method |
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| CN201810187389.3A CN108306078A (en) | 2018-03-07 | 2018-03-07 | Power battery heating system and method |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109273782A (en) * | 2018-09-03 | 2019-01-25 | 威马智慧出行科技（上海）有限公司 | Battery pack heat management system |
| CN109823234A (en) * | 2019-04-23 | 2019-05-31 | 上海汽车集团股份有限公司 | A kind of control method of drive system, drive system and new-energy automobile |
| CN110970965A (en) * | 2019-06-24 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Switch control device and method, motor controller and battery pack heating control system |
| CN110962631A (en) * | 2018-12-29 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | Battery heating system and control method thereof |
| WO2020125770A1 (en) * | 2018-12-21 | 2020-06-25 | 比亚迪股份有限公司 | Vehicle and power battery heating apparatus and method therefor |
| WO2020125769A1 (en) * | 2018-12-21 | 2020-06-25 | 比亚迪股份有限公司 | Vehicle and power battery heating apparatus and method therefor |
| CN111355000A (en) * | 2018-12-21 | 2020-06-30 | 比亚迪股份有限公司 | Vehicle and power battery heating device and method thereof |
| CN111355001A (en) * | 2018-12-21 | 2020-06-30 | 比亚迪股份有限公司 | Power battery heating device and method, vehicle and terminal equipment |
| CN111376795A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪汽车工业有限公司 | Control method and system for heating battery of electric automobile and electric automobile |
| CN112060938A (en) * | 2020-08-28 | 2020-12-11 | 宝能(广州)汽车研究院有限公司 | Charging control method and charging device for electric vehicle and vehicle |
| CN112297868A (en) * | 2019-07-26 | 2021-02-02 | 浙江吉智新能源汽车科技有限公司 | Active heating control method and device for hybrid excitation motor |
| CN112550077A (en) * | 2019-09-25 | 2021-03-26 | 比亚迪股份有限公司 | Energy conversion device and vehicle |
| WO2021057340A1 (en) * | 2019-09-25 | 2021-04-01 | 比亚迪股份有限公司 | Cooperative control method and apparatus for energy conversion apparatus, storage medium, and vehicle |
| CN112670620A (en) * | 2020-04-03 | 2021-04-16 | 长城汽车股份有限公司 | Vehicle and heating method and device of battery pack of vehicle |
| CN112659977A (en) * | 2020-04-02 | 2021-04-16 | 长城汽车股份有限公司 | Control method for heating battery pack, motor controller and battery pack heating system |
| CN113752914A (en) * | 2020-06-04 | 2021-12-07 | 比亚迪股份有限公司 | Control method and device of energy conversion device and vehicle |
| CN113921951A (en) * | 2020-07-10 | 2022-01-11 | 宁德时代新能源科技股份有限公司 | Self-heating control method and device for power battery |
| US11757147B2 (en) | 2021-01-12 | 2023-09-12 | Ford Global Technologies, Llc | System and method for resonant heating battery |
| US11916504B2 (en) | 2019-09-25 | 2024-02-27 | Byd Company Limited | Energy conversion device and vehicle |
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