CN105827011A - Electric vehicle power supply system with multiple groups of batteries - Google Patents
Electric vehicle power supply system with multiple groups of batteries Download PDFInfo
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- CN105827011A CN105827011A CN201510008881.6A CN201510008881A CN105827011A CN 105827011 A CN105827011 A CN 105827011A CN 201510008881 A CN201510008881 A CN 201510008881A CN 105827011 A CN105827011 A CN 105827011A
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses an electric vehicle power supply system with multiple groups of batteries, which comprises multiple groups of batteries or a standby battery. In the case of electricity exhaustion of a first battery, a second battery or a standby battery is automatically seamlessly switched, and the first battery and the second battery can perform alternative power supply and charging to enable the electric vehicle to continuously drive. Dangers of accidents caused by lamp loss or control loss of the electric vehicle in the case of driving can be avoided. When one battery is charged, the other battery provides power continuously, and inconvenience that the vehicle can not drive continuously when the battery of the electric vehicle is charged for a long time can be neglected.
Description
Technical field
The present invention is about a kind of electric motor car electric power system having many Battery packs, when the first battery electric quantity of electric motor car is used up, even the 3rd battery that the second battery is standby can switch to automatic seamless, and the commutative power supply of first, second battery, exchange charging continue to supply electricity to electro-motor operating.
Background technology
Power battery is the development topmost bottleneck of electric motor car, again battery system, charging and conversion electric station institute, facilitate and friendly use car environment, be even more important.Electric vehicle as-is when the electricity of battery is used up, and battery protecting circuit is the most directly cut off the electricity supply, and makes electronic vapour in traveling, locomotive instant cut-off stop travelling and losing lamp completely, the most out of control, or causes the danger of contingency；Because of power-off, vehicle cannot travel, and brings inconvenience and perplexs, and must go-cart or crane towing of seeking help, i.e. spend and lose time.Therefore the improvement of battery power supply system still has the biggest space.
Summary of the invention
A kind of electric motor car electric power system having many Battery packs of offer is provided, when the first battery electric quantity is used up, the second battery to the most standby the 3rd battery can be switched to continue to supply electricity to electro-motor operating by automatic seamless even driver need not make any operation, make electric motor car can continue traveling.
Another object of the present invention is to provide a kind of electric motor car electric power system having many Battery packs, main battery is divided into two or multiple battery, to reduce the volume of single battery, weight；In particular for electric motor car portable battery, carry installation lighter, more convenient.
A further object of the present invention is to provide a kind of electric motor car electric power system having many Battery packs, by whole also to battery control device and respective battery management system, share part and circuit board, and reach to simplify circuit, exempt from distribution, reduce volume, reduce cost, resistance to shake, reliably, the battery that reaches to simplify controls and the purpose of administrative system apparatus.
The present invention is a kind of electric motor car electric power system having many Battery packs by reaching the used technological means of above-mentioned purpose, this electric power system is as the power supply of a motor drive controller, this motor drive controller is connected to an electric vehicle motor, and this electric power system includes a battery control circuit；One first battery and one second battery；One first power crystal and one second power crystal, this first power crystal is series at this first battery and is its switch element, and this second power crystal is series at this second battery and is its switch element；During in-use automotive, this first battery is the most fully charged with this second battery, and this battery control circuit only selects one makes this electric vehicle start traveling as electric power output；If starting to select this first battery when its electricity is used up, switching to this second battery and continuing power supply to continue to travel.
Described battery control circuit includes that one first integrated circuit, one second integrated circuit and one the 3rd integrated circuit are respectively with for detecting voltage, and this first integrated circuit forms the chain circuit of mutual exclusion with this second integrated circuit, when the state that the output of this first integrated circuit is electronegative potential, then the output of this second integrated circuit is the state of high potential, this first power crystal is conducting state, make this first battery export, make electric motor car start and travel；When this first broken battery, automatic seamless switches to this second battery and continues power supply.
When the first described battery or any one battery electric quantity of the second battery are used up, this battery control circuit sends alarm, owes the signal of telecommunication.
During described first broken battery, switch to this second battery and continue power supply, charging then carried outside by this first battery, wait to be full of back to postpone and still continued power supply by the second battery, until during this electric second broken battery, switch to this first battery again and continue power supply, for circulation exchange power supply-charging, and make electric motor car can continue to travel.
Described electric power system farther includes one for a counterflow-preventing diode of connecting again after an electric transducer jumbo capacitor in parallel, power supply as Denso product supplies, make this Denso product supply unit during the switching of power battery, still can power without interruption, be the device for seamless switching.
Another technological means that the present invention is used by reaching above-mentioned purpose is a kind of electric motor car electric power system having many Battery packs, this electric power system is as the power supply of motor drive controller, this motor drive controller connects an electric vehicle motor, this electric power system includes: one first battery and one first power crystal of series connection with it, this first power crystal is the switch element of this first battery；One second battery and one second power crystal of series connection with it, this second power crystal is the switch element of this second battery；One the 3rd battery and one the 3rd power crystal of series connection with it, the 3rd power crystal is the switch element of the 3rd battery；One battery control circuit；During in-use automotive, this first battery, this second battery, the 3rd battery are the most fully charged, and this battery control circuit only selects one of them in the first battery, the second battery to export as electric power, makes this electric motor car start and travels；If starting to select this first battery, when the first broken battery, change and continue to supply electricity to this electric motor car continuation traveling to this second battery, and charging carried outside by this first battery, wait to be full of back to postpone and still continued power supply by the second battery, until during this electric second broken battery, switch to this first battery again and continue power supply, with circulation exchange power supply, charging, and make electric motor car continue to travel, if this first battery and this second battery all forgotten charging and all dead electricity time, then switch to the 3rd battery continue and make electric motor car continue travel.
Described battery control circuit includes one first integrated circuit, one second integrated circuit, one the 3rd integrated circuit, with for detecting voltage, and this first integrated circuit forms the chain circuit of mutual exclusion with this second integrated circuit, when the state that the output of this first integrated circuit is electronegative potential, the output of this second integrated circuit is the state of high potential, this first power crystal is conducting state, makes this first battery output power, makes electric motor car start and travels；When this first battery electric power is used up, the output of this second integrated circuit transfers the state of electronegative potential to, this first power crystal transfers closed mode to, the output of this first integrated circuit is the state of high potential, make this second power crystal transfer conducting state to and switch to this second battery continue power supply make electric motor car continue travel, this first battery is carried charging outside, is treated that fully charged returning again postpones, still continued power supply by this second battery, and drain to this second battery power, take off the charging of this second battery, the first battery of full electricity continue power supply；When charging all forgotten by this first battery, this second battery, so that dead electricity simultaneously, then the 3rd integrated circuit transfers the state of high potential to, and the 3rd power crystal transfers conducting state to, and standby threeth battery less by capacity is powered, and remains to do of short duration traveling.
When described the first battery, the second battery all dead electricity, this battery control circuit sends alarm and the deficient signal of telecommunication.
The 3rd described battery is provided with an exclusive standby charger, in order to the 3rd battery charging, makes the 3rd battery keep quota electricity without filling outward.
Described electric power system farther includes one for a counterflow-preventing diode of connecting again after an electric transducer jumbo capacitor in parallel, power supply as Denso product supplies, make this Denso product supply unit during the switching of power battery, still can power without interruption, be the device for seamless switching.
Accompanying drawing explanation
Fig. 1 is the control circuit figure of first embodiment of the invention；
Fig. 2 is the control circuit figure of second embodiment of the invention.
Detailed description of the invention
The technical content and a detailed description for the present invention, coordinate the embodiment explanation of drawings described below.
As shown in Figure 1, for the control circuit of the first embodiment of the present invention, including battery control circuit the 30, first battery B1 and the second power crystal Q2 of the first power crystal Q1 of series connection with it, the second battery B2 and series connection with it, supply electric transducer (DC/DCCONVERTER) 20, motor drive controller (DC/ACINVERTER) 10 and electro-motor PM.
First power crystal Q1, the second power crystal Q2 are standby in respective battery management system (not shown).For electric transducer (DC/DCCONVERTER) 20, electrical source of power plurality of specifications such as () 48V, 60V, 72V～650V being converted to unidirectional current 12V (or 24V) use supplying electricity to electric vehicle each Denso product (various light fixtures, instrument, electronic equipment ...), motor drive controller (DC/ACINVERTER) 10 is galvanic electrical source of power to be converted to AC three-phase voltage supply electro-motor PM use.
First transducer CONV1 and the second transducer CONV2 is respectively battery control circuit 30 and the battery management system (not shown) supply power supply for respective first battery B1 and the second battery B2, and in order to detect whether the first battery B1 out of the ordinary and the second battery B2 has electricity in battery control circuit 30.
In battery control circuit 30, first IC the 1, second IC the 2, the 3rd IC 3 uses for detecting voltage；And first IC 1 and the second IC 2 form the chain circuit of mutual exclusion, the commissure of battery control circuit 30 mat photo-coupler OPC is isolated as electrical conductance so that it is electricity warning SOC, short of electricity warning signal are owed in secondary side output.
In the case of the first battery B1, the second battery B2 have electricity, the first transducer CONV1, the output of the second transducer CONV2 are all 15V, A, B of battery control circuit 30 two point voltage be about 15V (being all the state of high potential).
The chain circuit of mutual exclusion formed because of the first IC 1 and the second IC 2, the chain circuit of this mutual exclusion has two kinds of possible states, one, if the first IC 1 is output as the state of electronegative potential, then the second IC 2 is output as the state of high potential；Then the first power crystal Q1 is conducting state, makes the first battery B1 output；Now the second power crystal Q2 is closed mode, and the second battery B2 can not export.When using car, no-fuse switch NFB power transmission, the first battery B1 to power, motor driven controller 10 is converted to three-phase alternating current and exports power running vehicle for electro-motor PM.
When the first battery B1 uses up, the first transducer CONV1 is without output, and the A point of battery control circuit 30 is the state of electronegative potential, now has electricity because of the second battery B2, then B point is the state of high potential.Because of the reason that first IC the 1, second IC 2 mutual exclusion is chain, the state that the first IC 1 output will be made to transfer high potential to, the second power crystal Q2 transfers conducting state to, the second battery B2 take over output power.Second IC 2 is output as the state of electronegative potential, and now the first power crystal Q1 is closed mode, by the first battery B1 isolation of dead electricity, waits that carrying fully charged returning again outside puts.
When second battery B2 continues to supply power to dead electricity, again take turns to having been filled with electricity and return the first battery B1 put again and continue power supply.During so the electric energy of any one power battery drains taking-up charging, battery of another full electricity continue power supply；Such two groups of power battery exchange power supply, exchange charging, make not affect the use of electric motor car.
In the case of the first battery B1, the second battery B2 have any one to be in dead electricity, the A point of its relative battery control circuit 30 or the state that the one of B point is electronegative potential, then the 3rd IC 3 is output as the state of high potential, the commissure of mat photo-coupler OPC makes its secondary side owe electricity warning SOC and sends warning signal to remind car user to charge immediately, and returns use of purchasing after fully charged again.
For electric transducer 20, Fig. 1 thinks that Denso product supply power supply, the circuit that the capacitor C1 of counterflow-preventing diode D1 and this confession electric transducer 20 parallel connection is constituted, in battery swap moment, can make not interrupt for the power supply supply of electric transducer 20；Make various light fixtures, instrument, power supply unbroken seamless switching facility of electronic equipment during battery switching, in order to avoid causing vehicle moment to lose lamp, danger out of control.
As in figure 2 it is shown, be the control circuit of the second embodiment of the present invention, including battery control circuit the 31, the 3rd transducer CONV3, the first battery B1, the second battery B2, additionally set up the 3rd standby battery B3；The first power crystal Q1, the second power crystal Q2, the 3rd power crystal Q3 and the first battery B1, the second battery B2, the 3rd standby battery B3 each connect, for electric transducer 20, motor drive controller 10, electro-motor PM and additionally set up the 4th power crystal Q4 of charging control circuit 41.
This first power crystal Q1, the second power crystal Q2, the 3rd power crystal Q3 are standby in respective battery management system.3rd battery B3 is changed into the power supply supply that unidirectional current 15V is battery control circuit 31 by another 3rd transducer CONV3.
Battery control circuit 31 forms voltage detection circuit with first IC the 1, second IC the 2, the 3rd IC 3, and wherein the first Ji Ti road IC1 and the second IC 2 form the chain circuit of mutual exclusion, another first photo-coupler OPC1 and the second photo-coupler OPC2 can isolate as electrical conductance, whether has electricity in order to detecting the first battery B1 and the second battery B2 out of the ordinary.If the first battery B1, the second battery B2, the 3rd battery B3 tri-are filled with electricity, in battery control circuit 31, the commissure of mat the first photo-coupler OPC1 and the second photo-coupler OPC2 makes corresponding A, B 2 be all the state of high potential.
In the chain circuit of mutual exclusion that this first IC 1, second IC 2 is formed, there are two kinds of possible states, one, if the first IC 1 is output as the state of electronegative potential, then the second IC 2 is output as the state of high potential, then the first power crystal Q1 is conducting state, then make the first battery B1 output power；First IC 1 exports then for the state of electronegative potential, and the second power crystal Q2 is closed mode, and the second battery B2 does not exports.
When the first battery B1 dead electricity, the A point of battery control circuit 31 is the state of electronegative potential, and the second IC 2 is output as the state of electronegative potential, and the first power crystal Q1 is closed mode, the first battery B1 isolation and amplifier；The full electricity of second battery B2 simultaneously, therefore the B point of battery control circuit 31 is the state of high potential, the first IC 1 is output as the state of high potential, and the second power crystal Q2 transfers conducting state to, makes the second battery B2 continue output power.
First battery B1 carries charging outside, and car can continue to travel.Treat that fully charged the returning again of the first battery B1 postpones, still continued power supply by the second battery B2, and drain to the second battery B2 electric energy, the first battery B1 of full electricity continue power supply, and take off fully charged the returning again of the second battery B2 and put.During so the electric energy in the first battery B1, second battery any one battery of B2 drains taking-up charging, power battery of another full electricity can continue power supply；I.e. first battery B1, the second battery B2 can power alternately, charge alternately, does not affect the use of car.
As long as the first battery B1, second one of them battery of battery B2 have electricity, the C point of battery control circuit 31 is the state of high potential, then the 3rd photo-coupler OPC3 secondary side is conducting state, output T point be the state of electronegative potential, the 4th power crystal Q4 of charging control circuit 41 be conducting state, 3rd battery B3 is charged by internal charger 40, battery is allowed to keep full power state at any time, it is not necessary to fill outward.Whether the battery control circuit 31 of the present embodiment uses the 3rd photo-coupler OPC3 to isolate as circuit, need to regard the battery management system of each power battery the need of decision.
During the first battery B1, the second battery B2 dead electricity simultaneously, the C point of battery control circuit 31 is the state of electronegative potential, 3rd photo-coupler OPC3 secondary side is closed mode, and output T point makes the 4th power crystal Q4 of charging control circuit 41 for closing, and cuts off the charge circuit of the 3rd standby battery B3.The output point D of the 3rd IC 3 is the state of high potential simultaneously, 4th photo-coupler OPC4 owes electricity warning SOC through its secondary side and sends warning signal, as quickly as possible with the people of prompting car the first battery B1, the second battery B2 are charged and return and put, and make deficient electricity warning SOC alarm electrically travel to save, 3rd power crystal Q3 is conducting state simultaneously, automatic seamless switches to less the 3rd standby battery B3 of capacity and continues power supply, and electric motor car can be made to continue of short duration traveling 10～the stroke of 20 kilometers.
When the electricity of this first battery B1 or any one battery of the second battery B2 is used up, this battery control circuit 31 sends alarm, owes the signal of telecommunication.
Above-mentioned second embodiment of the present invention can also arrange many group main batterys and reserve battery, and battery control circuit with automatic seamless switch many groups main battery and reserve battery automatic power in succession or charges alternately.
Illustrating of the possible embodiments for the present invention in sum, only this embodiment and be not used to limit the present invention the scope of the claims, all without departing from creation spirit of the present invention do equivalence implement or change, be intended to be limited solely by the scope of the claims of the present invention.
Claims (10)
1. the electric motor car electric power system having many Battery packs, it is characterised in that this electric power system includes
One battery control circuit (30)；One first battery (B1) and one second battery (B2)；
One first power crystal (Q1) and one second power crystal (Q2), this first power crystal (Q1) is series at this first battery (B1) and is its switch element, and this second power crystal (Q2) is series at this second battery (B2) and is its switch element；
During in-use automotive, this first battery (B1) is the most fully charged with this second battery (B2), and this battery control circuit (30) only selects one makes this electric vehicle start traveling as electric power output；If starting to select this first battery (B1) when its electricity is used up, switching to this second battery (B2) and continuing power supply to continue to travel.
The electric motor car electric power system of the many Battery packs of tool the most according to claim 1, it is characterized in that: this battery control circuit (30) includes one first integrated circuit (IC1), one second integrated circuit (IC2) and one the 3rd integrated circuit (IC3) are respectively with for detecting voltage, and this first integrated circuit (IC1) forms the chain circuit of mutual exclusion with this second integrated circuit (IC2), when this first integrated circuit (IC1) is output as the state of electronegative potential, then this second integrated circuit (IC2) is output as the state of high potential, this first power crystal (Q1) is conducting state, this first battery (B1) is made to export, make electric motor car start to travel；When this first battery (B1) is used up, automatic seamless switches to this second battery (B2) and continues power supply.
The electric motor car electric power system of the many Battery packs of tool the most according to claim 1 and 2, it is characterized in that: when any one battery electric quantity of this first battery (B1) or the second battery (B2) is used up, this battery control circuit (30) sends alarm, owes the signal of telecommunication.
The electric motor car electric power system of the many Battery packs of tool the most according to claim 1, it is characterized in that: when this first battery (B1) is used up, switch to this second battery (B2) and continue power supply, charging then carried outside by this first battery (B1), wait to be full of back to postpone and still continued power supply by the second battery (B2), during until this electric second battery (B2) is used up, switch to this first battery (B1) again and continue power supply, for circulation exchange power supply-charging, and make electric motor car can continue to travel.
The electric motor car electric power system of the many Battery packs of tool the most according to claim 1 and 2, it is characterized in that: a counterflow-preventing diode (D1) of connecting again after electric power system farther includes confession electric transducer (20) jumbo capacitor (C1) in parallel, power supply as Denso product supplies, make this Denso product supply unit during the switching of power battery, still can power without interruption, be the device for seamless switching.
6. the electric motor car electric power system having many Battery packs, it is characterised in that this electric power system includes:
One first battery (B1) and one first power crystal (Q1) of series connection with it, this first power crystal (Q1) is the switch element of this first battery (B1)；
One second battery (B2) and one second power crystal (Q2) of series connection with it, this second power crystal (Q2) is the switch element of this second battery (B2)；
One the 3rd battery (B3) and one the 3rd power crystal (Q3) of series connection with it, the 3rd power crystal (Q3) is the switch element of the 3rd battery (B3)；
One battery control circuit (31)；
During in-use automotive, this first battery (B1), this second battery (B2), the 3rd battery (B3) are the most fully charged, this battery control circuit (31) only selects one of them in the first battery (B1), the second battery (B2) to export as electric power, makes this electric motor car start and travels；
If starting to select this first battery (B1), when the first battery (B1) is used up, change and continue to supply electricity to this electric motor car continuation traveling to this second battery (B2), and charging carried outside by this first battery (B1), wait to be full of back to postpone and still continued power supply by the second battery (B2), during until this electric second battery (B2) is used up, switch to this first battery (B1) again and continue power supply, with circulation exchange power supply, charging, and make electric motor car continue to travel, if this first battery (B1) and this second battery (B2) all forgotten charging and all dead electricity time, then switch to the 3rd battery (B3) continue and make electric motor car continue to travel.
The electric motor car electric power system of the many Battery packs of tool the most according to claim 6, it is characterized in that: this battery control circuit (31) includes one first integrated circuit (IC1), one second integrated circuit (IC2), one the 3rd integrated circuit (IC3), with for detecting voltage, and this first integrated circuit (IC1) forms the chain circuit of mutual exclusion with this second integrated circuit (IC2), when this first integrated circuit (IC1) is output as the state of electronegative potential, this the second integrated circuit (IC2) is output as the state of high potential, this first power crystal (Q1) is conducting state, make this first battery (B1) output power, make electric motor car start to travel；
When this first battery (B1) dead, the output of this second integrated circuit (IC2) transfers the state of electronegative potential to, this first power crystal (Q1) transfers closed mode to, this the first integrated circuit (IC1) is output as the state of high potential, make this second power crystal (Q2) transfer conducting state to and switch to this second battery (B2) continue power supply make electric motor car continue travel, charging carried outside by this first battery (B1), treat that fully charged returning again postpones, still continued power supply by this second battery (B2), and drain to this second battery (B2) electric energy, take off the charging of this second battery (B2), continued power supply by first battery (B1) of full electricity；
When charging all forgotten by this first battery (B1), this second battery (B2), so that simultaneously dead electricity, then the 3rd integrated circuit (IC3) transfers the state of high potential to, 3rd power crystal (Q3) transfers conducting state to, standby threeth battery (B3) power supply less by capacity, remains to do of short duration traveling.
The electric motor car electric power system of the many Battery packs of tool the most according to claim 7, it is characterized in that: when the first battery (B1), the second battery (B2) all dead electricity, this battery control circuit (31) sends alarm and the deficient signal of telecommunication.
9. according to the electric motor car electric power system having many Battery packs described in claim 7 or 8, it is characterized in that: the 3rd battery (B3) is provided with an exclusive standby charger (40), in order to the 3rd battery (B3) charging, the 3rd battery (B3) is made to keep quota electricity without filling outward.
10. according to the electric motor car electric power system having many Battery packs described in claim 7 or 8, it is characterized in that: a counterflow-preventing diode (D1) of connecting again after electric power system farther includes confession electric transducer (20) jumbo capacitor (C1) in parallel, power supply as Denso product supplies, make this Denso product supply unit during the switching of power battery, still can power without interruption, be the device for seamless switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510008881.6A CN105827011A (en) | 2015-01-08 | 2015-01-08 | Electric vehicle power supply system with multiple groups of batteries |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510008881.6A CN105827011A (en) | 2015-01-08 | 2015-01-08 | Electric vehicle power supply system with multiple groups of batteries |
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| CN105827011A true CN105827011A (en) | 2016-08-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712167A (en) * | 2016-12-13 | 2017-05-24 | 北京奇虎科技有限公司 | Charging power supply protection device |
| CN106992592A (en) * | 2017-06-09 | 2017-07-28 | 深圳市宇辰智能科技有限公司 | A kind of battery pack supply control system for intelligent cleaning utensil |
| CN109921511A (en) * | 2019-03-26 | 2019-06-21 | 江苏台普动力机械有限公司 | A kind of power control system of engine |
| CN111497768A (en) * | 2020-04-20 | 2020-08-07 | 吉利汽车研究院（宁波）有限公司 | Vehicle auxiliary power supply method and system based on super capacitor |
-
2015
- 2015-01-08 CN CN201510008881.6A patent/CN105827011A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712167A (en) * | 2016-12-13 | 2017-05-24 | 北京奇虎科技有限公司 | Charging power supply protection device |
| CN106992592A (en) * | 2017-06-09 | 2017-07-28 | 深圳市宇辰智能科技有限公司 | A kind of battery pack supply control system for intelligent cleaning utensil |
| CN109921511A (en) * | 2019-03-26 | 2019-06-21 | 江苏台普动力机械有限公司 | A kind of power control system of engine |
| CN111497768A (en) * | 2020-04-20 | 2020-08-07 | 吉利汽车研究院（宁波）有限公司 | Vehicle auxiliary power supply method and system based on super capacitor |
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Application publication date: 20160803 |