CN104354693B - Over temperature protection method for ISG (Integrated Starter Generator) of hybrid electric vehicle - Google Patents
Over temperature protection method for ISG (Integrated Starter Generator) of hybrid electric vehicle Download PDFInfo
- Publication number
- CN104354693B CN104354693B CN201410653351.2A CN201410653351A CN104354693B CN 104354693 B CN104354693 B CN 104354693B CN 201410653351 A CN201410653351 A CN 201410653351A CN 104354693 B CN104354693 B CN 104354693B
- Authority
- CN
- China
- Prior art keywords
- motor
- temperature
- current time
- running
- default
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/087—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/086—Power
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an over temperature protection method for an ISG (Integrated Starter Generator) of a hybrid electric vehicle. When the ISG is about to achieve a temperature threshold value, the purpose of preventing the ISG from being burnt due to overhigh temperature is achieved by virtue of restricting the power of the ISG. By virtue of the motor, ISG over temperature protection is timely and effective, and charge and discharge performances of an entire-vehicle power battery are slightly influenced.
Description
Technical field
The invention belongs to electric system safety protection function field is it is adaptable to hybrid vehicle isg motor overheat protector
System.
Background technology
At present, the application of new forms of energy hybrid power system is increasingly extensive, and motor is as the pass of new forms of energy hybrid power system
Key parts, it is necessary to assure the safety and reliability of motor work, operationally, an electric energy part is converted into mechanical energy to motor
Output, a part is converted into heat energy, and heat is traveled in the air or other media by motor material, if motor continues work
The amount of heat making to produce gathers to a certain extent, and motor just has the possibility being burned out.
The temperature of existing protection motor is unlikely to too high method is: if after the temperature of motor reaches warning threshold values,
Directly reduce the half of the peak power output of motor to design maximum, if or electricity can not be controlled after reducing output
The temperature of machine, the temperature of motor is increased to motor highest and allows operating temperature, now thinks that serious heat dissipation problem in motor,
Then controlled motor is closed, and after motor cuts out, hybrid power system also lost efficacy therewith.It may be necessary to motor in hybrid power system
The larger power of output of short time, now motor temperature rise therewith, if temperature is once exceeding warning threshold values directly general
To half, the undulatory property of adjustment is too big, makes hybrid power system can not obtain lasting smooth-going for the output power limit of motor
Power output, easily causes overprotection to motor.
Content of the invention
It is an object of the invention to proposing a kind of hybrid vehicle isg motor excess temperature protection method, in order to improve motor
Overheat protector effectiveness, promptness, do not interfere with car load power battery charging simultaneously.
To achieve these goals, the technical scheme that the present invention provides is as follows:
A kind of hybrid vehicle isg motor excess temperature protection method, the method comprising the steps of:
1st, the running temperature of motor current time is obtained every a Preset Time；
2nd, the running temperature of described current time and the size of preset alert threshold values are compared；
When the 3rd, judging that the running temperature of described current time is less than described preset alert threshold values, determine the permission parameter of motor
Peak parameters for motor；
When the 4th, judging that the running temperature of described current time is more than or equal to described preset alert threshold values, when comparing described current
The running temperature carved and the size of default motor highest permission operating temperature；
5th, judge that the running temperature of described current time is more than or equal to described preset alert threshold values and ensures electricity less than default
The default corresponding relation of parameter when the motor highest of pond performance allows operating temperature, is allowed according to motor operation temperature and motor,
Determine the permission parameter of the motor corresponding with the running temperature of described motor current time；
6th, judge that the running temperature of described current time is more than or equal to the described default motor highest ensureing battery performance and permits
When being permitted operating temperature and allowing operating temperature less than default motor highest, permitted according to motor operation temperature, battery status and motor
Permitted the default corresponding relation of parameter, determined the permission parameter of the motor corresponding with the running temperature of described motor current time；
When the 5th, judging that the running temperature of described current time is more than or equal to default motor highest permission operating temperature, determine institute
The permission parameter stating motor is 0；
8th, the operational factor of controlled motor subsequent time is less than or equal to described permission parameter.
In described step 5, the default corresponding relation of motor operation temperature and motor permission parameter is:
Pre-build with motor operation temperature as transverse axis, the permission parameter of motor is the curve of the longitudinal axis, described curve bag
Include two sections of fixing curves of slope and straight line.The starting point of wherein curve is the preset alert valve of peak parameters with motor and motor
The value corresponding point of temperature, described slope of a curve change point is the default maximum allowable parameter of motor ensureing battery performance, shown
The terminal of curve is defined as 0 starting point for the parameter of electric machine.
In described step 2, the process of the relatively size of the running temperature of described current time and preset alert threshold values is；
When judging that the running temperature of described current time is less than described preset alert threshold values, determine that the running status of motor is
Normal condition；
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values, relatively described current time
Running temperature and default motor highest allow operating temperature size；
Judge that the running temperature of described current time is more than or equal to described preset alert threshold values and less than default motor highest
When allowing operating temperature, determine that the running status of motor is alarm condition；
Judge that the running temperature of described current time is more than or equal to described preset alert threshold values and more than default motor highest
When allowing operating temperature, determine that the running status of motor is malfunction.
In this method, the permission parameter of described motor includes: output power of motor and output torque.
Using above method, effect is:
(1) present invention is when motor is up to threshold temperature, by limiting motor power, reach prevent motor because
Temperature too high and lead to the purpose burnt so that motor overheat protector much sooner, effectively, will not excessively affect simultaneously car load move
Power battery charging and discharging performance.
(2) the default corresponding relation curve of motor operation temperature and motor permission parameter is by under adverse circumstances and operating mode
Test data analyzer obtain, can timely, effective limiting motor temperature continue to rise.
(3) this motor excess temperature protection method may also take into account if impact electrokinetic cell charge-discharge performance simultaneously, and in establishment electricity
Consider in advance to lead to electricity because power of motor is entirely limited during the default corresponding relation curve of machine running temperature and motor permission parameter
The problem that cannot charge in pond, prevents catastrophe failure.
Brief description
Fig. 1 is the motor excess temperature protection method FB(flow block) of the present invention；
Fig. 2 is the corresponding relation figure with running temperature for the motor permission parameter of the present invention.
Fig. 3 is the motor overheat protector flow chart that determines running status of the present invention.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings, as shown in figure 1, the motor temperature protection side that embodiment provides
Method includes:
1st, the running temperature of motor current time is obtained every a Preset Time.
Here Preset Time is to be pre-set according to practical situation, if necessary the temperature of motor is carried out strictly
Protection, then Preset Time is little as far as possible, when motor operationally, by the running status of motor and the shadow of radiating condition
Ring, the temperature of motor is in the middle of real-time change, and the motor temperature guard method that the embodiment of the present application provides is based on motor
The running temperature of current time controls carrying out follow-up adjustment.
2. compare the running temperature of described current time and the size of preset alert threshold values.
3., when judging that the running temperature of current time is less than preset alert threshold values, determine that the permission parameter of motor is motor
Peak parameters.
4. when judging that the running temperature of current time is more than or equal to preset alert threshold values, the relatively operation of described current time
Temperature and the size of default motor highest permission operating temperature.
5. judge that the running temperature of described current time is more than or equal to described preset alert threshold values and ensures electricity less than default
The default corresponding relation of parameter when the motor highest of pond performance allows operating temperature, is allowed according to motor operation temperature and motor,
Determine the permission parameter of the motor corresponding with the running temperature of described motor current time；
6. judge that the running temperature of described current time is more than or equal to the described default motor highest ensureing battery performance and permits
When being permitted operating temperature and allowing operating temperature less than default motor highest, permitted according to motor operation temperature, battery status and motor
Permitted the default corresponding relation of parameter, determined the permission parameter of the motor corresponding with the running temperature of described motor current time；
7., when judging that the running temperature of described current time is more than or equal to default motor highest permission operating temperature, determine institute
The permission parameter stating motor is 0；
8. the operational factor of controlled motor subsequent time is less than or equal to described permission parameter.
Above-mentioned preset alert threshold values allows operating temperature to deduct motor maximum temperature rise speed and peak power for motor highest
The product of persistent period, motor highest here allows operating temperature, motor maximum temperature rise speed and peak power persistent period
It is all calculated previously according to motor temperature-raising experiment.
Above-mentioned permission parameter be described current time running temperature under make the normal maximum parameter run of motor it is allowed to join
Number is predefined with the corresponding relation of running temperature, after the running temperature having acquired motor current time, according to
Allow the default corresponding relation of parameter and running temperature, be calculated the permission parameter that motor runs in this running temperature,
Here permission parameter includes output or the torque of motor.
Running temperature in order to protect motor be unlikely to raise or be unlikely to raise too fast, described motor operation temperature and
Motor allows the default corresponding relation of parameter as shown in Figure 2:
Pre-build with motor operation temperature as transverse axis, the permission parameter of motor is the curve of the longitudinal axis, described curve bag
Include parabola and straight line.
Described curve is two sections of fixing respectively curves of slope；Wherein, the starting point of described curve is the peak value ginseng with motor
Number and the corresponding point of preset alert threshold temperature of motor, described slope of a curve change point is the default electricity ensureing battery performance
The maximum allowable parameter of machine, the terminal of shown curve is defined as 0 starting point for the parameter of electric machine.
Described slope of a curve change point is limited the separation that power and performance maintain, under before this point, power of motor is quick
Fall is in order to the continuation of limiting motor temperature rises, and after this point, power of motor declines that to slow down be charging in order to maintain battery
Can, the setting of this point depends on battery status and motor operation temperature.
The operational factor of described controlled motor subsequent time is less than or equal to allow parameter, is to be achieved by the following scheme: root
According to power limit pLimitWith motor speed n, power limitation module passes through tQ limits=pLimit× 9550/n calculates motor output torque
Limits value tQ limits.Motor is according to torque instruction tQ needsWith torque limit value tQ limits, judge both sizes, if tQ needs＞ tQ limits, then according to
tQ limitsTo execute, if tQ needs＜ tQ limits, then still according to tQ needsTo execute, to reach torque-limiting output, to prevent temperature from continuing the mesh rising
's.
Fig. 3 is the schematic flow sheet of the determination running status that embodiment provides, and may comprise steps of:
The relatively running temperature of described current time and the size of preset alert threshold values；
When judging that the running temperature of described current time is less than described preset alert threshold values, determine that the running status of motor is
Normal condition；
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values, relatively described current time
Running temperature and default motor highest allow operating temperature size；
Judge that the running temperature of described current time is more than or equal to described preset alert threshold values and less than default motor highest
When allowing operating temperature, determine that the running status of motor is alarm condition；
Judge that the running temperature of described current time is more than or equal to described preset alert threshold values and more than default motor highest
When allowing operating temperature, determine that the running status of motor is malfunction.
Running status is to be divided into according to the running temperature of motor current time: normal condition, alarm condition and malfunction.
Claims (4)
1. a kind of hybrid vehicle isg motor excess temperature protection method, methods described comprises the steps:
(1) running temperature of motor current time is obtained every a Preset Time；
(2) running temperature of described current time and the size of preset alert threshold values are compared；
(3), when judging that the running temperature of described current time is less than described preset alert threshold values, determine that the permission parameter of motor is
The peak parameters of motor；
(4) when judging that the running temperature of described current time is more than or equal to described preset alert threshold values, relatively described current time
Running temperature and default motor highest allow operating temperature size；
(5) judge that the running temperature of described current time is more than or equal to described preset alert threshold values and ensures battery less than default
When the motor highest of performance allows operating temperature, allow the default corresponding relation of parameter according to motor operation temperature and motor, really
The permission parameter of the fixed motor corresponding with the running temperature of described motor current time；
(6) judge that the running temperature of described current time is more than or equal to the described default motor highest ensureing battery performance and allows work
When making temperature and allowing operating temperature less than default motor highest, ginseng is allowed according to motor operation temperature, battery status and motor
The default corresponding relation of number, determines the permission parameter of the motor corresponding with the running temperature of described motor current time；
(7), when judging that the running temperature of described current time is more than or equal to default motor highest permission operating temperature, determine described
The permission parameter of motor is 0；
(8) operational factor of controlled motor subsequent time is less than or equal to described permission parameter；
The default corresponding relation of described motor operation temperature and motor permission parameter is:
Pre-build with motor operation temperature as transverse axis, the permission parameter of motor is the curve of the longitudinal axis, and described curve includes tiltedly
Two sections of fixing curves of rate and straight line；The starting point of described curve is peak parameters with motor and the preset alert threshold values temperature of motor
Spend corresponding point, described slope of a curve change point is the default maximum allowable parameter of motor ensureing battery performance, shown curve
Terminal be defined as the parameter of electric machine 0 starting point.
2. hybrid vehicle isg motor excess temperature protection method according to claim 1, the relatively fortune of described current time
The size of trip temperature and preset alert threshold values includes:
When judging that the running temperature of described current time is less than described preset alert threshold values, determine that the running status of motor is normal
State；
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values, the relatively fortune of described current time
Trip temperature and the size of default motor highest permission operating temperature；
Judge that the running temperature of described current time is more than or equal to described preset alert threshold values and allows less than default motor highest
During operating temperature, determine that the running status of motor is alarm condition；
Judge that the running temperature of described current time is more than or equal to described preset alert threshold values and allows more than default motor highest
During operating temperature, determine that the running status of motor is malfunction.
3. hybrid vehicle isg motor excess temperature protection method according to claim 1, described controlled motor subsequent time
Operational factor be less than or equal to allow parameter, be to be achieved by the following scheme: according to power limit pLimitWith motor speed n,
Pass through t in power limitation moduleQ limits=pLimit× 9550/n calculates motor output torque limits value tQ limits, motor is according to torque instruction tQ needs
With torque limit value tQ limits, judge both sizes, if tQ needs＞ tQ limits, then according to tQ limitsTo execute, if tQ needs＜ tQ limits, then still according to
tQ needsTo execute, to reach torque-limiting output, to prevent temperature from continuing the purpose rising.
4. hybrid vehicle isg motor excess temperature protection method according to claim 1, the permission parameter bag of described motor
Include: output power of motor and output torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653351.2A CN104354693B (en) | 2014-11-17 | 2014-11-17 | Over temperature protection method for ISG (Integrated Starter Generator) of hybrid electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653351.2A CN104354693B (en) | 2014-11-17 | 2014-11-17 | Over temperature protection method for ISG (Integrated Starter Generator) of hybrid electric vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104354693A CN104354693A (en) | 2015-02-18 |
| CN104354693B true CN104354693B (en) | 2017-02-01 |
Family
ID=52522045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410653351.2A Active CN104354693B (en) | 2014-11-17 | 2014-11-17 | Over temperature protection method for ISG (Integrated Starter Generator) of hybrid electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104354693B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207569B (en) * | 2015-10-26 | 2018-01-30 | 重庆长安汽车股份有限公司 | Motor excess temperature protection method, device and the electric car of a kind of electric car |
| KR101855784B1 (en) * | 2016-11-09 | 2018-05-09 | 현대자동차 주식회사 | Motor controlling apparatus and method for vehicle |
| CN109808672B (en) * | 2017-11-22 | 2021-04-16 | 上海汽车集团股份有限公司 | Torque control method and device for hybrid electric vehicle |
| WO2021016886A1 (en) * | 2019-07-30 | 2021-02-04 | 深圳市大疆创新科技有限公司 | Gimbal control method, gimbal, and computer-readable storage medium |
| CN112758076B (en) * | 2019-10-21 | 2022-05-24 | 北汽福田汽车股份有限公司 | Vehicle and power control method and device thereof |
| CN112092630B (en) * | 2020-09-23 | 2022-08-12 | 北京车和家信息技术有限公司 | Motor over-temperature protection method and device, driving system and vehicle |
| CN113665371B (en) * | 2021-09-14 | 2023-06-13 | 上汽通用五菱汽车股份有限公司 | Over-temperature protection method for electric drive system, vehicle and readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3412526B2 (en) * | 1998-08-10 | 2003-06-03 | トヨタ自動車株式会社 | Motor control device and control method |
| CN102541113A (en) * | 2012-02-03 | 2012-07-04 | 重庆长安汽车股份有限公司 | Method and system for controlling temperature of motor |
| CN102853932A (en) * | 2012-08-28 | 2013-01-02 | 奇瑞汽车股份有限公司 | Temperature detection and analysis method of vehicular motor controller |
| CN103095213A (en) * | 2013-01-18 | 2013-05-08 | 重庆长安汽车股份有限公司 | Motor temperature protection method and motor control equipment and motor system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004324613A (en) * | 2003-04-28 | 2004-11-18 | Nissan Motor Co Ltd | Temperature controller for prime mover |
-
2014
- 2014-11-17 CN CN201410653351.2A patent/CN104354693B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3412526B2 (en) * | 1998-08-10 | 2003-06-03 | トヨタ自動車株式会社 | Motor control device and control method |
| CN102541113A (en) * | 2012-02-03 | 2012-07-04 | 重庆长安汽车股份有限公司 | Method and system for controlling temperature of motor |
| CN102853932A (en) * | 2012-08-28 | 2013-01-02 | 奇瑞汽车股份有限公司 | Temperature detection and analysis method of vehicular motor controller |
| CN103095213A (en) * | 2013-01-18 | 2013-05-08 | 重庆长安汽车股份有限公司 | Motor temperature protection method and motor control equipment and motor system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104354693A (en) | 2015-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104354693B (en) | Over temperature protection method for ISG (Integrated Starter Generator) of hybrid electric vehicle | |
| CN103095213B (en) | A kind of motor temperature guard method, electric machinery control device and electric system | |
| CN101264734B (en) | System protection control method for hybrid power automobile | |
| CN102332616A (en) | Diagnosis and control method for power battery management system | |
| US8306710B2 (en) | Method for diesel particulate filter regeneration in a vehicle equipped with a hybrid engine background of the invention | |
| CN105966199A (en) | New energy automobile PTC heating control system and method | |
| CN102639375B (en) | For controlling the method and apparatus of hybrid power function in automobile | |
| CN104880676A (en) | Power battery pack thermal runaway safety alarm method based on battery management system | |
| CN104854772A (en) | Electric storage device and method for charging same | |
| MX2020006245A (en) | Catalyst warm-up control method for hybrid vehicle and catalyst warm-up control apparatus for hybrid vehicle. | |
| CN103682519A (en) | Method for heating low-temperature environment of electric vehicle | |
| CN204567343U (en) | Light bus two-way redundant safety high-tension apparatus and control system thereof | |
| CN104779693A (en) | Method for operating pitch system of wind turbine | |
| CN104842814B (en) | Light bus two-way redundant safety high-tension apparatus and its control system and control method | |
| CA2792810A1 (en) | System for storing electrical energy | |
| CN108284755A (en) | Method and system for controlling energy supply in fuel-cell vehicle | |
| CN104852358A (en) | High-voltage battery over-voltage and under-voltage protection system and automobile provided with same | |
| CN108215812B (en) | Method and device for starting vehicle at low temperature | |
| CN102390277A (en) | Control method of range extender | |
| CN108819719A (en) | A kind of charging method and device of motor controller of new energy automobile | |
| CN104092365B (en) | The enable control method and output voltage control method of direct current converter | |
| CN105799541A (en) | A self-healing method for the over-current fault of a drive motor of an electric vehicle | |
| CN101549686A (en) | Electric automobile system protection control method | |
| CN107701372A (en) | A kind of wind power generating set self-protection control method become under oar Actuators Failures | |
| JP7212099B2 (en) | A method for protecting a supercapacitor module for a vehicle and a protection device for a supercapacitor module for a vehicle that implements this protection method. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200102 Address after: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Patentee after: Chongqing Chang'an Automobile Co., Ltd. Address before: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Co-patentee before: Chongqing Chang'an New Energy Automobile Co., Ltd. Patentee before: Chongqing Chang'an Automobile Co., Ltd. |
|
| TR01 | Transfer of patent right |