CN101186211A - Safety management system for mixed power vehicle - Google Patents
Safety management system for mixed power vehicle Download PDFInfo
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- CN101186211A CN101186211A CNA200710307109XA CN200710307109A CN101186211A CN 101186211 A CN101186211 A CN 101186211A CN A200710307109X A CNA200710307109X A CN A200710307109XA CN 200710307109 A CN200710307109 A CN 200710307109A CN 101186211 A CN101186211 A CN 101186211A
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- 238000004891 communication Methods 0.000 claims description 36
- 238000001816 cooling Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000001172 regenerating effect Effects 0.000 claims description 6
- 230000007257 malfunction Effects 0.000 abstract 3
- 230000005611 electricity Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
Aiming at implementing the integrated vehicle safety management of a mixed power vehicle, the invention provides a safety management system, comprising a vehicle safety management controller which is connected with a motor controller, a high voltage electricity safety controller, an integrated vehicle controller and a battery management controller by a CAN bus; the safety malfunctions are judged or predicted and corresponding safety management is executed by timely obtaining the states of a battery system, a high voltage system, a motor system, an ABS system, an engine system, a high voltage electricity safety system and vehicle driving. By adopting the safety management system, when high voltage malfunction occurs to the vehicle, the safest operation can be executed according to the driving information of the integrated vehicle; when the vehicle does not require the motor auxiliary driving, the high voltage system can be cut off; if the vehicle requires the motor auxiliary driving, the safest operation can be executed according to the severe degree of the high voltage malfunction and throttle stroke position. The safety management system provided by the invention can recover the brake energy to the utmost extent and ensure the safe brake of the vehicle.
Description
Technical field
The present invention relates to vehicle safety management, be particularly related to motor vehicle driven by mixed power or pure electric vehicle safety management with high-pressure system, the present invention has designed safety management system, has realized vehicle driving safety management, high-pressure system safety management, the safety management of cooling mechanism, the safety management of battery body and the safety management of Vehicle Controller.
Background technology
Pure electric automobile or hybrid vehicle have been introduced and have been comprised the high-pressure system that high-tension battery bag, inverter, motor etc. are formed.Vehicle is in driving process, because the influence of vibration, impact and electrokinetic cell corrosive liquid, gas, its high-tension current part is very easy to go wrong as high voltage components such as power battery pack, motor driven systems, threatens vehicle or driver and crew's safety; Motor vehicle driven by mixed power has energy recovery function, in the car brakeing process, the kinetic energy part of vehicle is converted into heat energy by brake facing, and another part then is converted into electric energy by electrical generator, when reclaiming vehicle braking energy, brake safe is first factor of considering; Battery is in the large current density electric process, and battery temperature can raise, and when battery temperature surpasses preset threshold, if still work, has not only reduced charge efficiency, and can cause the damage irretrievably of battery; Motor vehicle driven by mixed power has increased entire car controller, battery management controller, electric machine controller, if controller breaks down, the safety of car load can't be expected.
Existing motor vehicle driven by mixed power generally has the high-voltage safety management system, the management that realization is connected high-pressure system safety, the monitoring of high-pressure system state and the processing of high voltage fault, can guarantee vehicle and passengers inside the car's high-voltage safety, the high-voltage safety management system realizes the high-voltage safety of car load, but can not guarantee the dynamic property safety of car load, for example, when vehicle needs the motor assistive drive, and the high-voltage safety fault has appearred simultaneously, at this moment, height is pacified safety management system cut off high system, has also cut off the auxiliary power of vehicle simultaneously, might cause the driving safety of vehicle; When car brakeing, if consider the recovery of energy, might increase braking distance, reduced the driving safety of vehicle.Therefore, need comprehensive considering various effects, improve the level of security of motor vehicle driven by mixed power.
Summary of the invention
Main purpose of the present invention is to improve the safety performance of motor vehicle driven by mixed power, and motor vehicle driven by mixed power safety comprises vehicle driving safety, high-pressure system safety, motor-driven safety, battery body safety, controller secure.The present invention has designed motor vehicle driven by mixed power safety management controller, and this controller obtains the various status informations of car load by the CAN bus, and takes all factors into consideration the driving cycle of vehicle, the car load safety of management vehicle.
Safety management provided by the invention comprises dynamic security management and static security management, and the dynamic security management is meant in the vehicle ' process, the various status informations of real-time monitor vehicle system, and according to these states, the fault of judgement and prediction vehicle; After the static security management is meant vehicle parking, to battery system, high-pressure system, the maintenance of power assembly system, safety management system writes down static maintenance time, information such as Maintenance Significant Items.
For realizing the car load safety management of motor vehicle driven by mixed power, safety management system provided by the invention comprises the vehicle safety management controller, this controller is connected to electric machine controller, high-voltage safety controller, entire car controller and battery management controller by the CAN bus, by obtaining the state of battery system, high-pressure system, electric system, ABS system, engine system, high-voltage safety system and vehicle ' in real time, judge or the prediction safety failure, and carry out corresponding safety management.
Vehicle safety management system obtains vehicle state information by the CAN bus, if the CAN bus breaks down or in specific time, the safety management controller is not received the car status information that other controller is sent, and when the safety management controller is not received the message of motor assistive drive, safety management system will send the order of shield hybrid power function by condition line.Described safety management controller detects the CAN communication failure of other controller, also detects simultaneously the CAN communication failure of self, and the CAN communication failure that detects other controller is by in the time of setting, and does not receive that the CAN message of this controller realizes; The CAN communication failure that detects self is to obtain the safety management controller CAN communication of judging that other controller sends by signal wire (SW) whether normal information realizes.
Other controller also can detect the CAN communication failure of safety management controller, when the CAN communication failure takes place safety management system, other controller reports to the safety management controller by signal wire (SW) with the CAN communication failure of safety management system, the operation of safety management controller software reset.
The present invention realizes the safety management to battery system in the following manner: the battery system safety management is the realization that discharges and recharges by the control battery, because irrational battery charging and discharging is the major cause that reduces battery performance.The condition of battery charging and discharging is: when the work of motor controller controls inverter, and the battery management controller allows battery operated according to parameters such as battery charge state SOC, battery temperatures.If entire car controller allows battery charging and discharging, but the battery management controller does not allow battery charging and discharging, high-pressure system will be disconnected, and safety management system provided by the invention can solve this improper disconnection problem of high-pressure system that the instruction inconsistency causes that discharges and recharges.
Safety management system provided by the invention can be realized the safety management of high-pressure system.The fault of monitoring in real time of the high-voltage safety management system of motor vehicle driven by mixed power and prediction high-pressure system, and according to the order of severity of fault, carry out the operation that whether disconnects high-pressure system, but owing to do not consider the driving safety of car load, might in the cut off high system, cause serious vehicle ' fault.The driving information of management system collection vehicle provided by the invention and high-pressure system status information, when high-pressure system breaks down, motoring condition information according to vehicle, if the prediction vehicle loses the motor assistive drive, the danger that causes, according to the grade of hazard level, judge whether to disconnect high-pressure system.
Safety management system provided by the invention can be realized the driving safety management in the vehicle regenerative brake process.Regenerative brake is a kind of cutting down the consumption of energy, and improves the important technology method of continual mileage, and regenerative brake should be car brakeing safety as first key element of considering.Safety management system provided by the invention receives vehicle ' signal, the brake-pedal travel signal that entire car controller sends, and the assignment system energy is according to following tactful assignment system energy, as rate of braking P＜X
1, preferentially adopting regenerative brake, friction braking is not worked, and vehicle ' kinetic energy is converted into electric energy; Work as X
1＜P＜X
2, adopt the combined type brake mode, promptly vehicle ' kinetic energy changes into heat energy and electric energy according to fixing ratio; If rate of braking further increases, i.e. P＞X
2,, adopt friction braking method for guaranteeing the driving safety of vehicle.Wherein X1 is a regenerated energy rate of braking threshold value, and X2 is a frictional energy rate of braking threshold value.
Safety management system provided by the invention can be realized the safety management to cooling system.The motor vehicle driven by mixed power cooling system comprises battery cooling system, motor cooling system, inverter cooling system, and when cooling system breaks down, if cooled equipment still works on, cooled equipment may suffer damage.Safety management system provided by the invention judges by gathering the speed of cooling fan signal whether cooling system breaks down.For example, when motor vehicle driven by mixed power in the process of moving, be 0 if monitor the inverter cooling fan rotation speed, and the inverter temperature surpasses preset threshold, judge that then the inverter cooling system breaks down, and diagnostic code issued entire car controller.
Safety management system provided by the invention can be realized the safety management to the CAN communication.Safety management system receives the CAN communication data that Vehicle Controller (car load Management Controller, high-voltage safety controller, battery management controller, EMS etc.) sends periodically, as in the time of setting, confiscate the CAN information that certain controller sends, judge that then the CAN communication failure has appearred in this controller; If other controller is not all received the CAN data that safety management system sends in the time of setting, then pass through the mode of data line communication, this state is sent to safety management system, safety management system is then judged the CAN communication failure, and this fault sent to entire car controller by condition line, entire car controller will send the forced resetting signal, recover the CAN communication function.
Description of drawings
Fig. 1 is a motor vehicle driven by mixed power Vehicle Controller line graph of the present invention;
Fig. 2 is that entire car controller and battery management controller allow battery operated SOC operation interval scheme drawing;
Fig. 3 is the schematic diagram of safety management system management driving safety;
Fig. 4 is the schematic diagram that safety management system provided by the invention detects the CAN communication failure;
Fig. 5 is the software flow pattern of safety management system.
The specific embodiment
Introduce the application of the present invention on hybrid vehicle and the effect of generation below in conjunction with accompanying drawing.
As shown in Figure 1, safety management system provided by the invention is an independently controller, safety management controller and other controller are by the CAN bus communication, obtain the information of vehicle traveling information and each system of vehicle in real time, after the safety management system monitoring or predicting the fault of system, will be by CAN bus notice entire car controller, the mode by condition line shields dangerous fault simultaneously.
Fig. 2 is that entire car controller and battery management controller allow battery operated SOC operation interval scheme drawing.Generally, battery management system allows the operation interval of battery to comprise entire car controller and allows battery operated operation interval.If entire car controller allows the interval of battery operated interval greater than battery controller permission work, battery management system is the protection battery, will send the instruction that disconnects battery system.
The present invention realizes that the safe management of charging and discharging of battery realizes in the following manner, when monitoring battery management system, safety system do not allow battery charging and discharging, and entire car controller sends the information that allows inverter work, safety management system is not before battery management system disconnects high-pressure system, just send the instruction that does not allow inverter work, thereby avoided the improper disconnection of high-pressure system.
Fig. 3 is the schematic diagram of safety management system management driving safety, as shown in the figure, safety management system receives car load driving cycle information, high-pressure system status information, after receiving the high-pressure system failure message, safety management system will be according to whole vehicle state information, judge whether to disconnect high-pressure system, avoid directly disconnecting high-pressure system and the accident of travelling that might cause.
As shown in Figure 4, safety management system provided by the invention can not only detect the CAN communication failure of other Vehicle Controller, also can detect the CAN communication failure of self.The CAN communication failure that detects other Vehicle Controller is by in the time of setting, and does not receive that the CAN message of this controller realizes; Detect self-generating CAN communication failure and be by what signal wire (SW) obtained that other controller sends and judge whether normal signal of safety management controller CAN communication.
Other controller also can detect the CAN communication failure of safety management system.When the CAN communication failure takes place safety management system, other controller reports to safety management system, the operation of safety management system software reset by signal wire (SW) with the CAN communication failure of safety management system.
Fig. 5 is the software flow pattern of safety management system, after safety management system is received ignition signal, to wake up from park mode, system's power-up initializing, whether the CAN communication that detects self then is normal, the CAN communication failure self occurred if detect, safety management system will be carried out reset operation; As it is normal to monitor spontaneous CAN communication, CAN communication state that will other controller of monitoring, as monitor other controller and the CAN fault occurs, then safety management system can send to entire car controller with the information of breaking down; For improving the safety management to vehicle driving safety, regenerative brake safety and cooling system, the present invention uses the mode of hardware interrupts, improves the real-time of response
Management system provided by the invention has improved the driving safety of vehicle.When high voltage fault occurring, can be according to the driving information of car load, carry out safest operation, when vehicle does not need the motor assistive drive, the high-pressure system of can breaking, when if vehicle needs the motor assistive drive, will carry out safest operation according to the order of severity and the throttle travel position of high voltage fault; Safety system provided by the invention can reclaim braking energy to greatest extent, and guarantees vehicle braked safety.
Claims (9)
1. vehicle safety management system, comprise the vehicle safety management controller, this controller is connected to electric machine controller, high-voltage safety controller, entire car controller and battery management controller by the CAN bus, by obtaining the state of battery system, high-pressure system, electric system, ABS system, engine system, high-voltage safety system and vehicle ' in real time, judge or the prediction safety failure, and carry out corresponding safety management.
2. vehicle safety management system according to claim 1, it is characterized in that: obtain vehicle state information by the CAN bus, if the CAN bus breaks down or in specific time, the safety management controller is not received the car status information that other controller is sent, and the safety management controller is not received the message of motor assistive drive, and safety management system will send the order of shield hybrid power function by condition line.
3. vehicle safety management system according to claim 1 and 2, it is characterized in that: described safety management controller detects the CAN communication failure of other controller, also detect simultaneously the CAN communication failure of self, the CAN communication failure that detects other controller is by in the time of setting, and does not receive that the CAN message of this controller realizes; The CAN communication failure that detects self is to obtain the safety management controller CAN communication of judging that other controller sends by signal wire (SW) whether normal information realizes.
4. according to each described vehicle safety management system of claim 1-3, it is characterized in that: other controller also can detect the CAN communication failure of safety management controller, when the CAN communication failure takes place safety management system, other controller reports to the safety management controller by signal wire (SW) with the CAN communication failure of safety management system, the operation of safety management controller software reset.
5. according to each described vehicle safety management system of claim 1-4, it is characterized in that: do not allow battery charging and discharging when safety management system monitors the battery management controller, and entire car controller is when sending the information that allows inverter work, the safety management controller is not before battery management system disconnects high-pressure system, just send the instruction that does not allow inverter work, thereby avoid the improper disconnection of high-pressure system.
6. according to each described vehicle safety management system of claim 1-5, it is characterized in that: the driving information of described vehicle safety management system collection vehicle and high-pressure system status information, when high-pressure system breaks down, motoring condition information according to vehicle, if the prediction vehicle loses the danger that the motor assistive drive causes, according to the grade of hazard level, judge whether to disconnect high-pressure system.
7. according to each described vehicle safety management system of claim 1-6, it is characterized in that: safety management system receives vehicle ' signal, the brake-pedal travel signal that entire car controller sends, the assignment system energy is according to following tactful assignment system energy, as rate of braking P＜X
1, preferentially adopting regenerative brake, friction braking is not worked, and vehicle ' kinetic energy is converted into electric energy; Work as X
1＜P＜X
2, adopt the combined type brake mode, promptly vehicle ' kinetic energy changes into heat energy and electric energy according to fixing ratio; If rate of braking further increases, i.e. P＞X
2, for guaranteeing the driving safety of vehicle, adopt friction braking method, wherein X1 is a regenerated energy rate of braking threshold value, X2 is a frictional energy rate of braking threshold value.
8. according to each described vehicle safety management system of claim 1-7, it is characterized in that: described safety management controller judges by gathering the speed of cooling fan signal whether cooling system breaks down.
9. vehicle safety management system according to claim 8, it is characterized in that: in the process of moving, when the safety management monitoring control devices is 0 to the inverter cooling fan rotation speed, and when the inverter temperature surpasses preset threshold, judge that then the inverter cooling system breaks down, and diagnostic code is issued entire car controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710307109A CN100591562C (en) | 2007-12-29 | 2007-12-29 | Safety management system for mixed power vehicle |
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|---|---|---|---|
| CN200710307109A CN100591562C (en) | 2007-12-29 | 2007-12-29 | Safety management system for mixed power vehicle |
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| CN101186211A true CN101186211A (en) | 2008-05-28 |
| CN100591562C CN100591562C (en) | 2010-02-24 |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102050029A (en) * | 2010-12-20 | 2011-05-11 | 奇瑞汽车股份有限公司 | Method and device for recycling energy of pure electric automobile |
| CN102050114A (en) * | 2010-12-07 | 2011-05-11 | 深圳市佳华利道新技术开发有限公司 | Braking control method of hybrid electrical vehicle |
| CN102252856A (en) * | 2011-07-01 | 2011-11-23 | 深圳市航盛电子股份有限公司 | System for testing electric automobile power system assembly |
| CN102759922A (en) * | 2012-07-20 | 2012-10-31 | 湖南吉大汽车链条有限公司 | Electric motorcar communication safety detection method and system thereof |
| CN102826017A (en) * | 2012-09-06 | 2012-12-19 | 浙江吉利汽车研究院有限公司杭州分公司 | High-voltage safety protection system of electromobile |
| CN103108770A (en) * | 2010-07-09 | 2013-05-15 | 株式会社V-Ens | Electric vehicle and method for controlling emergency thereof |
| CN103116350A (en) * | 2012-12-06 | 2013-05-22 | 金龙联合汽车工业（苏州）有限公司 | Car controller area network (CAN) communication failure detection system and detection method thereof |
| CN103707886A (en) * | 2012-10-05 | 2014-04-09 | 福特全球技术公司 | Control strategy for an electric machine in a vehicle |
| CN103754215A (en) * | 2014-01-03 | 2014-04-30 | 深圳市陆地方舟新能源电动车集团有限公司 | Hybrid-power vehicle control system |
| CN104252170A (en) * | 2013-06-28 | 2014-12-31 | 现代自动车株式会社 | Fault diagnosing system and method for coolant switching device for vehicle |
| CN105700419A (en) * | 2014-11-28 | 2016-06-22 | 上海汽车集团股份有限公司 | Control method and device of whole vehicle controller and whole vehicle control method and system |
| CN107415702A (en) * | 2017-06-26 | 2017-12-01 | 北京长城华冠汽车科技股份有限公司 | Brake energy recovering system, recovery method and the new-energy automobile of new-energy automobile |
| CN107804314A (en) * | 2016-09-09 | 2018-03-16 | 法乐第(北京)网络科技有限公司 | A kind of processing method and system of motor vehicle driven by mixed power battery communication failure |
| CN108068799A (en) * | 2016-11-16 | 2018-05-25 | 丰田自动车株式会社 | Hybrid electric vehicle |
| CN109895787A (en) * | 2019-03-25 | 2019-06-18 | 新石器慧通（北京）科技有限公司 | A kind of control method and control device of vehicle drive |
| CN114475252A (en) * | 2022-01-29 | 2022-05-13 | 广东汇天航空航天科技有限公司 | Data processing system and method for vehicle battery, vehicle and storage medium |
| CN115817386A (en) * | 2022-12-28 | 2023-03-21 | 中国重汽集团济南动力有限公司 | Vehicle state management system and method based on central controller and intelligent EDB |
-
2007
- 2007-12-29 CN CN200710307109A patent/CN100591562C/en active Active
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| CN103108770B (en) * | 2010-07-09 | 2015-08-12 | Lg电子株式会社 | Electronlmobil and emergency control method thereof |
| CN103108770A (en) * | 2010-07-09 | 2013-05-15 | 株式会社V-Ens | Electric vehicle and method for controlling emergency thereof |
| CN102050114A (en) * | 2010-12-07 | 2011-05-11 | 深圳市佳华利道新技术开发有限公司 | Braking control method of hybrid electrical vehicle |
| CN102050114B (en) * | 2010-12-07 | 2013-11-20 | 深圳市佳华利道新技术开发有限公司 | Braking control method of hybrid electrical vehicle |
| CN102050029A (en) * | 2010-12-20 | 2011-05-11 | 奇瑞汽车股份有限公司 | Method and device for recycling energy of pure electric automobile |
| CN102050029B (en) * | 2010-12-20 | 2013-01-02 | 奇瑞汽车股份有限公司 | Method and device for recycling energy of pure electric automobile |
| CN102252856A (en) * | 2011-07-01 | 2011-11-23 | 深圳市航盛电子股份有限公司 | System for testing electric automobile power system assembly |
| CN102759922A (en) * | 2012-07-20 | 2012-10-31 | 湖南吉大汽车链条有限公司 | Electric motorcar communication safety detection method and system thereof |
| CN102759922B (en) * | 2012-07-20 | 2015-07-08 | 湖南吉大汽车链条有限公司 | Electric motorcar communication safety detection method and system thereof |
| CN102826017B (en) * | 2012-09-06 | 2015-02-11 | 浙江吉利汽车研究院有限公司杭州分公司 | High-voltage safety protection system of electromobile |
| CN102826017A (en) * | 2012-09-06 | 2012-12-19 | 浙江吉利汽车研究院有限公司杭州分公司 | High-voltage safety protection system of electromobile |
| CN103707886A (en) * | 2012-10-05 | 2014-04-09 | 福特全球技术公司 | Control strategy for an electric machine in a vehicle |
| CN103707886B (en) * | 2012-10-05 | 2018-06-08 | 福特全球技术公司 | For the control strategy of motor in vehicle |
| CN103116350A (en) * | 2012-12-06 | 2013-05-22 | 金龙联合汽车工业（苏州）有限公司 | Car controller area network (CAN) communication failure detection system and detection method thereof |
| CN104252170A (en) * | 2013-06-28 | 2014-12-31 | 现代自动车株式会社 | Fault diagnosing system and method for coolant switching device for vehicle |
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| CN105700419A (en) * | 2014-11-28 | 2016-06-22 | 上海汽车集团股份有限公司 | Control method and device of whole vehicle controller and whole vehicle control method and system |
| CN107804314A (en) * | 2016-09-09 | 2018-03-16 | 法乐第(北京)网络科技有限公司 | A kind of processing method and system of motor vehicle driven by mixed power battery communication failure |
| CN108068799A (en) * | 2016-11-16 | 2018-05-25 | 丰田自动车株式会社 | Hybrid electric vehicle |
| CN108068799B (en) * | 2016-11-16 | 2021-04-23 | 丰田自动车株式会社 | Hybrid vehicle |
| CN107415702A (en) * | 2017-06-26 | 2017-12-01 | 北京长城华冠汽车科技股份有限公司 | Brake energy recovering system, recovery method and the new-energy automobile of new-energy automobile |
| CN107415702B (en) * | 2017-06-26 | 2020-03-27 | 北京长城华冠汽车科技股份有限公司 | Braking energy recovery system and method for new energy automobile and new energy automobile |
| CN109895787A (en) * | 2019-03-25 | 2019-06-18 | 新石器慧通（北京）科技有限公司 | A kind of control method and control device of vehicle drive |
| CN114475252A (en) * | 2022-01-29 | 2022-05-13 | 广东汇天航空航天科技有限公司 | Data processing system and method for vehicle battery, vehicle and storage medium |
| CN115817386A (en) * | 2022-12-28 | 2023-03-21 | 中国重汽集团济南动力有限公司 | Vehicle state management system and method based on central controller and intelligent EDB |
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| CN100591562C (en) | 2010-02-24 |
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Application publication date: 20080528 Assignee: The Wanda of Cherry Guizhou passenger vehicle Company Limited by Shares Assignor: Saic Chery Automobile Co., Ltd. Contract record no.: 2013520000010 Denomination of invention: Safety management system for mixed power vehicle Granted publication date: 20100224 License type: Exclusive License Record date: 20131205 |
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