CN110048192A - A kind of power battery preheating method - Google Patents
A kind of power battery preheating method Download PDFInfo
- Publication number
- CN110048192A CN110048192A CN201910213023.3A CN201910213023A CN110048192A CN 110048192 A CN110048192 A CN 110048192A CN 201910213023 A CN201910213023 A CN 201910213023A CN 110048192 A CN110048192 A CN 110048192A
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- Prior art keywords
- power battery
- preheating
- automobile
- driven motor
- stator current
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
-
- 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
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention belongs to power batteries to preheat technical field, especially a kind of power battery preheats method, the preheating method includes that the stator current components in the control automobile-used AC driven motor along rotor field direction are changed by certain frequency, keep stator current vector consistent or opposite always with rotor field direction, the DC side of the power battery is motivated to generate high-frequency current, to power battery high frequency charge and discharge；Present invention incorporates rotor field orientation technologies and stator current vector control method, so that the electric energy that automobile-used AC driven motor is exchanged with power battery does reactive power, it is reconverted into thermal energy required for heated power battery, in addition to transmission line, electrical-coil and inverter losses, additional energy loss not will cause；Without increasing additional heating device or material, the preheating of power battery is realized using the drive system of electric car itself, implementation method is simple, and cost is relatively low.
Description
Technical field
The invention belongs to power batteries to preheat technical field, and especially a kind of power battery preheats method.
Background technique
Currently, with the fast development of new-energy automobile, electric car using more and more extensive；However, electric car
Power battery at low temperature, especially at -20 DEG C or less, power and energy can all greatly reduce, and influence electric car
Normal use.For this purpose, needing to preheat the power battery of electric car in the lower use environment of temperature.
Currently, power battery preheating method mainly has internal heating and external heating.Wherein, internal heating is to pass through
Increase additional inverter and exchange heating carried out to power battery, this method although heating efficiency with higher, but inversion
The volume of device and weight are larger, and arrangement and installation all increase additional burden for electric car.Outside heating is to utilize
Exterior material transfers heat to power battery by way of heat transfer or thermal convection, and this method is for the heating of inside
It is more convenient, but heat efficiency it is lower, also, heat lost in transmittance process it is larger.
Summary of the invention
It is an object of the invention to overcome deficiency in the prior art, a kind of power battery preheating method is provided.
To achieve the goals above, the present invention is achieved by the following scheme:
A kind of power battery preheating method, is applied to new-energy automobile dynamical system, which includes power electric
Pond, the inverter being connected with power battery, electric machine controller and automobile-used AC driven motor；The preheating method includes
Stator current components in the control automobile-used AC driven motor along rotor field direction are changed by certain frequency, make stator
Current phasor and rotor field direction are consistent always or on the contrary, the DC side of the power battery is motivated to generate high-frequency current, right
The charge and discharge of power battery high frequency ground.
In further technical solution, the preheating method further include: control is along the orthogonal side in rotor field direction
To stator current components be zero, make automobile-used AC driven motor output torque lower than the minimum that overcomes needed for rotor rotation
Stiction.
In further technical solution, the preheating method further include: power battery DC terminal with it is described
Filtering device is accessed between the bus end of inverter.
In further technical solution, the preheating method further include: judge whether to meet before preheating pre-
Heating condition, the pre-heating conditions include: that electric car is in starting state, the revolving speed of the automobile-used AC driven motor
Be zero and the temperature of the power battery be lower than setting value.
In further technical solution, the preheating method further include: when the voltage of power battery is lower than specified
When value, preheating power is reduced.
Compared with prior art, the present invention has following technical effect that
Power battery provided in the present invention preheats method, combines rotor field orientation technology and stator current
Vector control method is reconverted into heating so that the electric energy that automobile-used AC driven motor is exchanged with power battery does reactive power
Thermal energy required for power battery not will cause additional energy damage in addition to transmission line, electrical-coil and inverter losses
It loses；
Power battery preheating method provided by the invention utilizes new energy without increasing additional heating device or material
The drive system of source automobile itself realizes the preheating of power battery, and implementation method is simple, and cost is relatively low；
Power battery provided by the invention preheats method, and the high frequency alternating current of generation can realize power battery fast
Speed heating, heating efficiency are high.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment.
Detailed description of the invention
Fig. 1 is power battery preheating system schematic diagram provided by the invention；
Fig. 2 is stator current vector figure in embodiment 1.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific attached drawing is closed, the present invention is furture elucidated.
As shown in connection with fig. 1, the present invention provides a kind of power batteries to preheat method, is applied to electric powered motor system
System, which includes power battery, the inverter that is connected with power battery, electric machine controller with it is automobile-used exchange drive it is electric
Machine；The preheating method includes the stator current point in the control automobile-used AC driven motor along rotor field direction
Amount is changed by certain frequency, is kept stator current vector and rotor field direction consistent always or on the contrary, is motivated the power battery
DC side generate high-frequency current, to power battery high frequency charge and discharge.
In the present invention, by programming to electric machine controller, the inverter and motor control being connected with power battery are utilized
Device controls the excitation field variation of automobile-used AC driven motor, power battery direct current described in the switched energization by reactive power
Side generates high-frequency current, realizes to power battery high frequency charge and discharge, and then generate preheating thermal energy.
Further, according to the present invention, in order to ensure electric energy is converted to reactive power to generate to power battery substantially
Preheating thermal energy, while guaranteeing the state that electric car is remain stationary, in preheating method provided by the invention, control edge
The stator current components of rotor field direction orthogonal direction are zero, make automobile-used AC driven motor output torque lower than rotor
The minimum stiction overcome needed for rotation.
Further, according to the present invention, DC terminal and the inverter in the preheating method, in power battery
Bus end between access filtering device.By the way that filter circuit, the alternation electricity for the DC side being connected directly with power battery is arranged
Stream is gentler, prevents excessive excitation from damaging to power battery.
Further, according to the present invention, it in the preheating method, needs to judge whether to meet preheating before preheating
Condition, specifically, the pre-heating conditions include: that electric car is in starting state, the automobile-used AC driven motor
Revolving speed is zero and the temperature of the power battery is lower than setting value.In the specific implementation process, pass through monitoring power battery
The revolving speed of temperature information and automobile-used AC driven motor is to determine whether preheated, when electric car is in starting
When state, when the temperature of power battery lower than the revolving speed of setting value and automobile-used AC driven motor is zero, power battery is carried out
Preheating；When the temperature of power battery reaches the pre-heat value of setting, stop preheating.
In the present invention, preheating control model is dispatched by entire car controller state machine mechanism, when meeting pre-heating conditions
Into preheated state, and when the voltage of power battery is lower than rated value, preheating power is reduced.
In the present invention, the automobile-used AC driven motor is permanent magnet synchronous motor or AC induction motor；When automobile-used friendship
When stream driving motor is permanent magnet synchronous motor, rotor is configured to permanent magnet excitation, fixed to rotor field by detection rotor-position
To control stator current changes along rotor field durection component alternation, and orthogonal direction component is zero；When automobile-used AC driven motor
When for AC induction motor, rotor is configured to squirrel-cage or Wound-rotor type winding, passes through estimation rotor flux direction, control stator electricity
Stream changes along rotor field durection component alternation, and orthogonal direction component is zero.
Power battery provided by the invention preheating method is described in detail below by way of specific embodiment.
Embodiment 1
It is as shown in connection with fig. 1 the schematic diagram of power battery preheating system provided by the invention；Wherein, automobile-used by detecting
AC driven motor stator three-phase current, stator voltage and motor speed, rotor position information, determine rotor field
To.It is permanent magnet synchronous motor if automobile-used AC driven motor, then passes through the position detection devices such as rotary transformer or stator electricity
The sensors monitor value such as current voltage measures or estimates rotor field position；If automobile-used AC driven motor is AC induction motor,
Rotor field side is then estimated by stator voltage, electric current and rotary speed information combination voltage-to-current model or electric current-revolving speed model
To.
Rotor field-oriented synchronous rotary rectangular coordinate system is established, wherein D axis is along rotor field direction, and Q axis is along rotor magnetic
Field direction orthogonal direction and advanced D 90 degree of space (electricity) angles of axis carry out threephase stator electric current further according to rotor field direction
Clark transformation and Park transformation, make stator current vector along DQ axis Orthogonal Decomposition, respectively iD、iQ.It is easy according to Electrical Motor principle
Know, iDFor rotor excitation current, iQFor torque current.Work as iDWhen changing, only change rotor-exciting magnetic field, without producing
Raw electromagnetic torque, works as iQWhen being not zero, motor generates electromagnetic torque.Therefore, by giving DQ axis stator current components reference value
iD_refAnd iQ_ref, so that iD_refAlternation variation (square-wave signal that positive and negative amplitude is identical and frequency is fixed), iQ_ref=0, in conjunction with electricity
The DQ axis stator current actual value i of flow sensor feedbackDAnd iQ, DQ axis stator current components are accurately controlled using PI closed loop, so that
The exchange variation of D axis stator current components actual value, Q axis stator current components actual value are maintained near zero, stator current vector
isIt falls on D axis, there are power-factor angles with voltage-phase for electric currentThe electric energy exchanged between motor and battery does idle
Power, as shown in Figure 2.
Wherein, stator current closed-loop control part, by giving DQ axis stator current components reference value iD_refAnd iQ_ref,
The DQ axis stator current actual value i fed back in conjunction with current sensorDAnd iQ, DQ axis stator voltage is calculated by PI controller
Component uDAnd uQ, in conjunction with rotor field angle, iPark transformation is carried out to stator voltage component, is obtained under static alpha-beta shafting
Stator voltage component uαAnd uβ, obtain inputing to each phase duty ratio of inverter by SVPWM.Inverter and automobile-used alternating current generator
It is connected by triple line, inverter DC bus is connected with filter circuit, is then connected to power battery.Obtained power battery
There is the alternating current by certain frequency sustained oscillation in DC terminal, by power battery continuous high frequency charge and discharge, realize power electric
The preheating in pond.
The present invention is combined motor vector control technology with power battery preheating, utilizes existing new-energy automobile power
Drive system framework innovatively proposes completely new power battery preheating method, technically have essence otherness and
Low cost, Yi Shixian, control precision be high, many technological merits that can be infered such as high-efficient.
Basic principles and main features and the features of the present invention of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims
And its equivalent thereof.
Claims (5)
1. a kind of power battery preheats method, it is applied to new-energy automobile dynamical system, which includes power battery,
The inverter being connected with power battery, electric machine controller and automobile-used AC driven motor；It is characterized in that, the preheating
Method includes that the stator current components in the control automobile-used AC driven motor along rotor field direction are become by certain frequency
Change, keep stator current vector and rotor field direction consistent always or on the contrary, the DC side of the power battery is motivated to generate height
Frequency electric current, to power battery high frequency charge and discharge.
2. power battery according to claim 1 preheats method, which is characterized in that the preheating method is also wrapped
Include: control is zero along the stator current components of rotor field direction orthogonal direction, keeps automobile-used AC driven motor output torque low
The minimum stiction overcome needed for rotor rotation.
3. power battery according to claim 1 preheats method, which is characterized in that the preheating method is also wrapped
It includes: accessing filtering device between the DC terminal of power battery and the bus end of the inverter.
4. power battery according to claim 1 preheats method, which is characterized in that the preheating method is also wrapped
It includes: judging whether to meet pre-heating conditions before preheating；
The pre-heating conditions include: that electric car is in starting state, and the revolving speed of the automobile-used AC driven motor is zero
And the temperature of the power battery is lower than setting value.
5. power battery according to claim 1 preheats method, which is characterized in that the preheating method is also wrapped
It includes: when the voltage of power battery is lower than rated value, reducing preheating power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910213023.3A CN110048192A (en) | 2019-03-20 | 2019-03-20 | A kind of power battery preheating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910213023.3A CN110048192A (en) | 2019-03-20 | 2019-03-20 | A kind of power battery preheating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110048192A true CN110048192A (en) | 2019-07-23 |
Family
ID=67273877
Family Applications (1)
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|---|---|---|---|
| CN201910213023.3A Withdrawn CN110048192A (en) | 2019-03-20 | 2019-03-20 | A kind of power battery preheating method |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN112744124A (en) * | 2020-04-22 | 2021-05-04 | 长城汽车股份有限公司 | Control method and device for heating battery pack and vehicle control unit |
| CN112744123A (en) * | 2019-10-30 | 2021-05-04 | 北京新能源汽车股份有限公司 | Power battery self-heating control method and device and electric automobile |
| CN113098360A (en) * | 2019-12-23 | 2021-07-09 | 广州汽车集团股份有限公司 | Battery heating method and device, storage medium and terminal equipment |
| CN113474973A (en) * | 2020-10-23 | 2021-10-01 | 华为技术有限公司 | Motor, motor controller, heat exchange system and control method |
| CN113602149A (en) * | 2021-08-26 | 2021-11-05 | 中国第一汽车股份有限公司 | Electric automobile power battery heating method and electric automobile |
| WO2021253694A1 (en) * | 2020-06-15 | 2021-12-23 | 江苏时代新能源科技有限公司 | Method and device for controlling permanent magnet motor, power system, and electric vehicle |
| WO2022021450A1 (en) * | 2020-07-31 | 2022-02-03 | 宁德时代新能源科技股份有限公司 | Electric motor, power system, control method, and electric vehicle |
| CN114096435A (en) * | 2021-03-30 | 2022-02-25 | 华为数字能源技术有限公司 | Electric drive system, power assembly, heating method and electric vehicle |
| CN114670656A (en) * | 2020-12-24 | 2022-06-28 | 宁德时代新能源科技股份有限公司 | Control method and device, power system and electric automobile |
| US11418143B2 (en) | 2020-12-24 | 2022-08-16 | Contemporary Amperex Technology Co., Limited | Control method and apparatus, power system, and electric vehicle |
| WO2022183401A1 (en) * | 2021-03-03 | 2022-09-09 | 华为数字能源技术有限公司 | Asynchronous motor processing method, apparatus, device and system, and vehicle |
| CN115416495A (en) * | 2022-08-12 | 2022-12-02 | 华为数字能源技术有限公司 | Controller for driving motor and related equipment thereof |
| WO2023024918A1 (en) * | 2021-08-26 | 2023-03-02 | 中国第一汽车股份有限公司 | Electric motor control method and electric vehicle |
-
2019
- 2019-03-20 CN CN201910213023.3A patent/CN110048192A/en not_active Withdrawn
Cited By (31)
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| 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 |
| CN112297868B (en) * | 2019-07-26 | 2022-05-27 | 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 |
| CN112550077B (en) * | 2019-09-25 | 2022-04-15 | 比亚迪股份有限公司 | Energy conversion device and vehicle |
| CN112744123A (en) * | 2019-10-30 | 2021-05-04 | 北京新能源汽车股份有限公司 | Power battery self-heating control method and device and electric automobile |
| CN113098360B (en) * | 2019-12-23 | 2023-04-25 | 广汽埃安新能源汽车有限公司 | Method and device for heating battery, storage medium and terminal equipment |
| CN113098360A (en) * | 2019-12-23 | 2021-07-09 | 广州汽车集团股份有限公司 | Battery heating method and device, storage medium and terminal equipment |
| 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 |
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| 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 |
| CN112744124A (en) * | 2020-04-22 | 2021-05-04 | 长城汽车股份有限公司 | Control method and device for heating battery pack and vehicle control unit |
| WO2021213472A1 (en) * | 2020-04-22 | 2021-10-28 | 长城汽车股份有限公司 | Method and apparatus for controlling heating of battery pack, and entire vehicle controller |
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| WO2021253694A1 (en) * | 2020-06-15 | 2021-12-23 | 江苏时代新能源科技有限公司 | Method and device for controlling permanent magnet motor, power system, and electric vehicle |
| US11309826B2 (en) | 2020-06-15 | 2022-04-19 | Jiangsu Contemporary Amperex Technology Limited | Method and apparatus for controlling permanent magnet motor, power system and electric vehicle |
| WO2022021450A1 (en) * | 2020-07-31 | 2022-02-03 | 宁德时代新能源科技股份有限公司 | Electric motor, power system, control method, and electric vehicle |
| CN113474973A (en) * | 2020-10-23 | 2021-10-01 | 华为技术有限公司 | Motor, motor controller, heat exchange system and control method |
| EP4067161A4 (en) * | 2020-12-24 | 2023-07-19 | Contemporary Amperex Technology Co., Limited | Control method, apparatus, power system and electric vehicle |
| CN114670656A (en) * | 2020-12-24 | 2022-06-28 | 宁德时代新能源科技股份有限公司 | Control method and device, power system and electric automobile |
| WO2022134266A1 (en) * | 2020-12-24 | 2022-06-30 | 宁德时代新能源科技股份有限公司 | Control method and apparatus, power system and electric vehicle |
| WO2022134640A1 (en) * | 2020-12-24 | 2022-06-30 | 宁德时代新能源科技股份有限公司 | Control method, apparatus, power system and electric vehicle |
| US11418143B2 (en) | 2020-12-24 | 2022-08-16 | Contemporary Amperex Technology Co., Limited | Control method and apparatus, power system, and electric vehicle |
| EP4046862A4 (en) * | 2020-12-24 | 2022-08-24 | Contemporary Amperex Technology Co., Limited | Control method and apparatus, power system and electric vehicle |
| CN114670656B (en) * | 2020-12-24 | 2024-10-18 | 宁德时代新能源科技股份有限公司 | Control method and device, power system and electric automobile |
| WO2022183401A1 (en) * | 2021-03-03 | 2022-09-09 | 华为数字能源技术有限公司 | Asynchronous motor processing method, apparatus, device and system, and vehicle |
| CN114096435B (en) * | 2021-03-30 | 2023-07-11 | 华为数字能源技术有限公司 | Electric drive system, power assembly, heating method and electric vehicle |
| WO2022204944A1 (en) * | 2021-03-30 | 2022-10-06 | 华为数字能源技术有限公司 | Electric drive system, drivetrain, heating method, and electric vehicle |
| CN114096435A (en) * | 2021-03-30 | 2022-02-25 | 华为数字能源技术有限公司 | Electric drive system, power assembly, heating method and electric vehicle |
| WO2023024918A1 (en) * | 2021-08-26 | 2023-03-02 | 中国第一汽车股份有限公司 | Electric motor control method and electric vehicle |
| CN113602149A (en) * | 2021-08-26 | 2021-11-05 | 中国第一汽车股份有限公司 | Electric automobile power battery heating method and electric automobile |
| CN115416495A (en) * | 2022-08-12 | 2022-12-02 | 华为数字能源技术有限公司 | Controller for driving motor and related equipment thereof |
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Application publication date: 20190723 |