CN110497796A - A kind of low-voltage power supply system and its control method of new-energy automobile - Google Patents
A kind of low-voltage power supply system and its control method of new-energy automobile Download PDFInfo
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- CN110497796A CN110497796A CN201910912136.2A CN201910912136A CN110497796A CN 110497796 A CN110497796 A CN 110497796A CN 201910912136 A CN201910912136 A CN 201910912136A CN 110497796 A CN110497796 A CN 110497796A
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- 230000005611 electricity Effects 0.000 claims abstract description 18
- 230000009471 action Effects 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000003860 storage Methods 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000005183 dynamical system Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 239000007858 starting material Substances 0.000 description 1
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- 230000009466 transformation Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/14—Preventing excessive discharging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Human Computer Interaction (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Present invention discloses a kind of low-voltage power supply systems of new-energy automobile, newly energy automobile is equipped with the battery pack as power source, described battery pack the two poles of the earth connect battery management system, the battery management system is equipped with the trickle charge interface of connection charger and the fast charge interface of connection direct current charge equipment, the input terminal of the two poles of the earth connection DCDC of the battery pack, the low-voltage output of the DCDC is directly connected to vehicle-mounted electricity consumption device, DCDC fuse and DCDC relay are in series between the anode and DCDC of the battery pack, the input end loop of the relay control interface connection DCDC relay of the battery management system.The system not only solves low-voltage power supply, reduces integral vehicle cost, and prevent battery pack during DCDC constantly powers again, solves the problems, such as battery pack low battery and battery over-discharge.
Description
Technical field
The present invention relates to new-energy automobile fields.
Background technique
Currently, new-energy automobile, no wheel is electric car or hybrid vehicle, and the power supply of low-voltage electrical apparatus controller is
12V/24V, use power supply plan for high-tension battery group by DCDC (high voltage direct current turns low-voltage DC) transformation after, to be vehicle-mounted
Battery charging.Vehicular accumulator cell is low voltage equipment power supply.
Since conventional fuel oil automobile is without high-tension battery group, so that automobile electrical equipment must pass through driven by engine small electrical
Motivation power generation comes to charge the battery.Also, need starter motor to drive internal combustion engine start at the start in conventional fuel oil automobile, therefore
Need very big peak power.Therefore low tension battery is needed to store electricity.
Currently, the storage battery low-voltage power supply mode for the traditional vehicle that battery car from conventional fuel oil car transition, is continued to use.But it stores
Battery low-voltage power supply mode, has the following disadvantages.
1, battery higher cost increases integral vehicle cost.
2, accumulator quality is heavier, because complete vehicle curb weight and complete-vehicle oil consumption and power consumption have very big relationship, is unfavorable for
Vehicle lightweight.
3, battery volume is big, and occupancy vehicle space is more, is unfavorable for dynamical system arrangement.
4, vehicle uses storage battery power supply, and battery generally uses lead storage battery, and the service life is short, does not charge for a long time, is easy
Over-discharge damage.
In view of the above-mentioned problems, can replace storage battery power supply by DCDC, DCDC takes battery pack high-voltage electricity to be converted to
Low tension is vehicle power supply, but it is too low directly to take battery pack high-voltage electricity to easily cause battery pack SOC, and long-time car stowage is easy
Put damage with causing battery pack.
Summary of the invention
It is a kind of using DCDC substitution storage battery power supply the technical problem to be solved by the present invention is to realize, and over-discharge can be prevented
Battery pack and vehicle low-voltage power supply system.
To achieve the goals above, the technical solution adopted by the present invention are as follows: a kind of low-voltage power supply system of new-energy automobile,
Newly energy automobile is equipped with the battery pack as power source, and described battery pack the two poles of the earth connect battery management system, the battery management
System is equipped with the trickle charge interface of connection charger and the fast charge interface of connection direct current charge equipment, the two poles of the earth connection of the battery pack
The input terminal of DCDC, the low-voltage output of the DCDC are directly connected to vehicle-mounted electricity consumption device, the anode of the battery pack and
DCDC fuse and DCDC relay are in series between DCDC, the relay control interface of the battery management system connects DCDC
The input end loop of relay.
The anode of the battery pack connects positive High voltage output route, and cathode connects cathode High voltage output route, it is described just
Be in series with positive fuse and positive grade relay on extra-high voltage outlet line, the cathode High voltage output route be in series with negative grade after
Electric appliance, the anode High voltage output route connect high-tension battery packet electrical source of power output interface with cathode High voltage output route.
Be fixed in the shell of the high-tension battery packet battery pack, negative grade relay, positive fuse, positive grade relay,
DCDC fuse, DCDC relay, DCDC.
The relay control interface of the battery management system connects negative grade relay and the input terminal of positive grade relay returns
Road.
The new-energy automobile includes pure electric automobile, hybrid vehicle, alkene material automobile.
The control method of low-voltage power supply system based on the new-energy automobile:
1) battery management system control DCDC relay is normally off；
2) when battery management system works, battery state information is obtained in real time；
3) when the battery state information of acquisition reaches the preset condition for disconnecting DCDC relay, then battery management system
Cut off DCDC relay.
It is described 3) in, if vehicle is in driving status, delay cutoff DCDC relay, and reported by automobile audio
It is alert.
It is described 3) in, the voice of alarm includes playing failure cause, will cutting off vehicle-mounted electricity consumption device power supply, Yi Ji
The final stage of delay carries out countdown broadcasting to the cutoff action that will be carried out.
It is more than setting time when the vehicle non-driving status time, then battery management system cuts off DCDC relay, works as battery
After management system receives charging signals, restore DCDC relay channel status.
The battery state information includes discharge capability information, electricity SOC information, fault message, the disconnection DCDC
The condition of relay is that discharge capability is lower than setting value lower than setting value, electricity SOC and/or preset fault type occurs.
The present invention has the advantages that
1, cancel battery, kerb weight decline improves vehicle continuation of the journey；
2, integral vehicle cost reduces, and being conducive to automaker reduces integral vehicle cost；
3, arrangement battery is reduced.Be conducive to dynamical system arrangement；
4, energy intelligent recognition battery pack SOC low battery, automatic protection battery pack is not by over-discharge；
5, after vehicle power-off, DCDC can be activated by trickle charge or fast charge, the phase is made to work on；
6, prevent battery pack high-voltage electricity from drawing outside battery pack.
Detailed description of the invention
Below to width attached drawing every in description of the invention expression content and figure in label be briefly described:
Fig. 1 is the low-voltage power supply system schematic diagram of new-energy automobile；
Label in above-mentioned figure is equal are as follows: 1, high-tension battery packet；2, battery management system；3, trickle charge electrical interface；4, charger；
5, charging gun；6, direct current charge；7, battery pack；8, negative grade relay；9, positive grade fuse；10, positive grade relay；11,DCDC
Fuse；12, DCDC relay；13,DCDC.
Specific embodiment
Below against attached drawing, by the description of the embodiment, for example related each component of a specific embodiment of the invention
Shape, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle, manufacturing process and
Operate with method etc., is described in further detail, to help those skilled in the art to inventive concept of the invention, technology
Scheme has more complete, accurate and deep understanding.
As shown in Figure 1, the low-voltage power supply system of new-energy automobile include high-tension battery packet 1, battery management system 2 (BMS),
Charger 4, charging gun 5, direct current charge 6, battery pack 7, negative grade relay 8, positive fuse 9, positive relay 10, DCDC are molten
Disconnected device 11, DCDC relay 12, DCDC13 (high voltage direct current turns low-voltage direct) composition.
Be fixed in the shell of high-tension battery packet battery pack 7, negative grade relay 8, positive fuse 9, positive grade relay 10,
DCDC fuse 11, DCDC relay 12, DCDC13.
Battery management system BMS2 is mainly managed battery pack, including to battery set charge/discharge ability, cell voltage
Current power, the system indexs such as battery SOC/HOC are managed.
When high-tension battery packet 1 dispatches from the factory, output of the battery pack without high voltage power electricity and low-voltage electrical apparatus electricity.In automobile production
And after assembling battery pack, direct current charge rifle or exchanging trickle charge rifle can be inserted, trickle charge charger 4 or direct current charge 6 can be externally defeated
Low-voltage power supply is that battery management system 2 is powered out.Battery management system is to be attracted DCDC relay 12, to start
DCDC13 is that external vehicle mounted electrical apparatus and battery management system 2 are powered.Vehicle starts to start normal function operation, according to vehicle demand
It can carry out the actuation work of positive relay 10 or negative grade relay 8.
Battery pack 1 starts same with battery management system 2 after DCDC13 is activated by trickle charge charger 4 or direct current charge 6
Work is walked, DCDC relay 12 is outer in attracting state always, to externally carry out the output of low-voltage DC.Meanwhile cell tube
Reason system 2 detects discharge capability/electricity SOC/ failure etc. of battery pack, detects electricity SOC in battery management system 2
In low, discharge capability is insufficient, have the factors such as catastrophe failure generation when.If vehicle is not in driving status, battery management system 2
I.e. cutting DCDC relay 12 stops output low tension.If vehicle is in driving status, battery management system 2 requests vehicle row
It sails to safety zone and carries out delay cut-off.
Outside new-energy automobile is placed for a long time when non-driving status, this system can be right by battery management system 2
The factors such as battery capacity are detected, and prevent battery pack 7 in the state that DCDC13 is in and works always, continuous discharge leads to electricity
Group 7 over-discharge in pond damages battery.Charging activation processing is only carried out when DCDC13 stops working.
Positive relay 10 can be controlled by battery management system 2, can also be according to vehicle demand by other controller controls
System；Positive relay 10 would be likely placed inside battery pack according to vehicle scheme, can also be placed on outside battery pack.
Negative grade relay 8 can be controlled by battery management system 2, can also be according to vehicle demand by other controller controls
System.Negative grade relay 8 can be placed on inside battery pack according to vehicle scheme, can also be placed on outside battery pack.
Positive grade fuse 9 can be placed on inside battery pack according to vehicle scheme, can also be placed on outside battery pack, it is also possible to
Cancel.Positive fuse 9 only protects short circuit and overload, can be cancelled according to demand.
DCDC fuse 11, DC relay 12, DCDC13 can be placed on inside battery pack according to vehicle scheme, can also be put
In other places of automobile.Direct current charge 6 meets electric power fast charge national standard, and low pressure controller utilization voltage range is 6-50V model
In enclosing.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out is used, or without changing
It is within the scope of the present invention into the conception and technical scheme of the invention are directly applied to other occasions.
Claims (9)
1. a kind of low-voltage power supply system of new-energy automobile, newly energy automobile is equipped with the battery pack as power source, the battery
Group the two poles of the earth connect battery management system, and the battery management system is equipped with the trickle charge interface and connection direct current charge of connection charger
The fast charge interface of equipment, it is characterised in that: the input terminal of the two poles of the earth connection DCDC of the battery pack, the low pressure output of the DCDC
End is directly connected to vehicle-mounted electricity consumption device, is in series with DCDC fuse and DCDC relay between the anode and DCDC of the battery pack
Device, the input end loop of the relay control interface connection DCDC relay of the battery management system.
2. the low-voltage power supply system of new-energy automobile according to claim 1, it is characterised in that: the anode of the battery pack
Positive High voltage output route is connected, cathode connects cathode High voltage output route, and anode high-voltage output line road is in series with just
Pole fuse and positive grade relay, the cathode High voltage output route are in series with negative grade relay, the anode high-voltage output line
Road connects high-tension battery packet electrical source of power output interface with cathode High voltage output route.
3. the low-voltage power supply system of new-energy automobile according to claim 2, it is characterised in that: the high-tension battery packet
Be fixed in shell battery pack, negative grade relay, positive fuse, positive grade relay, DCDC fuse, DCDC relay,
DCDC。
4. the low-voltage power supply system of new-energy automobile according to claim 2 or 3, it is characterised in that: the battery management
The relay control interface of system connects the input end loop of negative grade relay and positive grade relay.
5. the low-voltage power supply system of new-energy automobile according to claim 4, it is characterised in that: the new-energy automobile packet
Include pure electric automobile, hybrid vehicle, alkene material automobile.
6. the control method of the low-voltage power supply system based on the new-energy automobile any in claim 1-5, it is characterised in that:
1) battery management system control DCDC relay is normally off；
2) when battery management system works, battery state information is obtained in real time；
3) when the battery state information of acquisition reaches the preset condition for disconnecting DCDC relay, then battery management system is cut off
DCDC relay.
It is described 3) in, if vehicle is in driving status, delay cutoff DCDC relay, and alarmed by automobile audio.
7. control method according to claim 6, it is characterised in that: it is described 3) in, the voice of alarm includes playing failure
Reason will cut off vehicle-mounted electricity consumption device power supply and carry out in the final stage of delay to the cutoff action that will be carried out
Countdown plays.
8. control method according to claim 7, it is characterised in that: when the vehicle non-driving status time being more than setting
Between, then battery management system cuts off DCDC relay, after battery management system receives charging signals, restores DCDC relay
Channel status.
9. according to control method described in claim 6,7 or 8, it is characterised in that: the battery state information includes electric discharge
Ability information, electricity SOC information, fault message, the condition for disconnecting DCDC relay are that discharge capability is lower than setting value, electricity
SOC is measured lower than setting value and/or preset fault type occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910912136.2A CN110497796A (en) | 2019-09-25 | 2019-09-25 | A kind of low-voltage power supply system and its control method of new-energy automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910912136.2A CN110497796A (en) | 2019-09-25 | 2019-09-25 | A kind of low-voltage power supply system and its control method of new-energy automobile |
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| CN110497796A true CN110497796A (en) | 2019-11-26 |
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| CN201910912136.2A Pending CN110497796A (en) | 2019-09-25 | 2019-09-25 | A kind of low-voltage power supply system and its control method of new-energy automobile |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111002827A (en) * | 2019-12-30 | 2020-04-14 | 深圳一清创新科技有限公司 | Unmanned vehicle power supply system and control method thereof |
| CN111660871A (en) * | 2020-05-15 | 2020-09-15 | 浙江飞碟汽车制造有限公司 | Novel power supply system and power supply method of new energy automobile |
| CN111717037A (en) * | 2020-05-25 | 2020-09-29 | 东风柳州汽车有限公司 | Light energy charging vehicle and charging method thereof |
| CN111717146A (en) * | 2020-06-04 | 2020-09-29 | 奇瑞商用车（安徽）有限公司 | Power supply control circuit and method for electric automobile without low-voltage storage battery |
| CN112009246A (en) * | 2020-08-13 | 2020-12-01 | 宜宾凯翼汽车有限公司 | Automobile auxiliary power supply management system and control method |
| CN112165131A (en) * | 2020-09-07 | 2021-01-01 | 东风柳州汽车有限公司 | New energy automobile emergency power supply system and start control method |
| CN112757963A (en) * | 2021-01-22 | 2021-05-07 | 北京机械设备研究所 | Low-voltage protection device and method for power battery and new energy vehicle |
| CN113386623A (en) * | 2021-06-30 | 2021-09-14 | 奇瑞商用车（安徽）有限公司 | New energy automobile quick charging port external discharging system and method |
| CN113561849A (en) * | 2021-07-27 | 2021-10-29 | 新石器慧通（北京）科技有限公司 | Power supply control system and unmanned vehicle |
| CN113665336A (en) * | 2021-07-16 | 2021-11-19 | 东风汽车集团股份有限公司 | Electric automobile, power supply method thereof and electronic equipment |
| CN113978253A (en) * | 2021-09-24 | 2022-01-28 | 合众新能源汽车有限公司 | Insert and mix formula hybrid vehicle type scram device |
| CN114559818A (en) * | 2021-03-02 | 2022-05-31 | 长城汽车股份有限公司 | High-low voltage system, method for obtaining low voltage based on high voltage and electric automobile |
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| CN111717037A (en) * | 2020-05-25 | 2020-09-29 | 东风柳州汽车有限公司 | Light energy charging vehicle and charging method thereof |
| CN111717146A (en) * | 2020-06-04 | 2020-09-29 | 奇瑞商用车（安徽）有限公司 | Power supply control circuit and method for electric automobile without low-voltage storage battery |
| CN112009246A (en) * | 2020-08-13 | 2020-12-01 | 宜宾凯翼汽车有限公司 | Automobile auxiliary power supply management system and control method |
| CN112165131A (en) * | 2020-09-07 | 2021-01-01 | 东风柳州汽车有限公司 | New energy automobile emergency power supply system and start control method |
| CN112757963A (en) * | 2021-01-22 | 2021-05-07 | 北京机械设备研究所 | Low-voltage protection device and method for power battery and new energy vehicle |
| CN114559818A (en) * | 2021-03-02 | 2022-05-31 | 长城汽车股份有限公司 | High-low voltage system, method for obtaining low voltage based on high voltage and electric automobile |
| CN114559818B (en) * | 2021-03-02 | 2024-05-14 | 长城汽车股份有限公司 | High-low voltage system, method for obtaining low voltage based on high voltage and electric automobile |
| CN113386623A (en) * | 2021-06-30 | 2021-09-14 | 奇瑞商用车（安徽）有限公司 | New energy automobile quick charging port external discharging system and method |
| CN113665336A (en) * | 2021-07-16 | 2021-11-19 | 东风汽车集团股份有限公司 | Electric automobile, power supply method thereof and electronic equipment |
| CN113561849A (en) * | 2021-07-27 | 2021-10-29 | 新石器慧通（北京）科技有限公司 | Power supply control system and unmanned vehicle |
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