CN110254288A - Battery pack control system - Google Patents
Battery pack control system Download PDFInfo
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- CN110254288A CN110254288A CN201910496983.5A CN201910496983A CN110254288A CN 110254288 A CN110254288 A CN 110254288A CN 201910496983 A CN201910496983 A CN 201910496983A CN 110254288 A CN110254288 A CN 110254288A
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- 230000005611 electricity Effects 0.000 claims abstract description 8
- 230000004044 response Effects 0.000 claims abstract description 5
- 238000009826 distribution Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of battery pack control systems, including at least two branch's battery packs being connected in parallel, and branch corresponding with branch's battery pack quantity relay, it further include the battery management system being separately connected with each branch's relay and each branch's battery pack, battery management system and controls the on-off of each branch's relay in response to the status information of branch's battery pack.Battery pack control system of the present invention, be conducive to cut off coupled branch's relay in time when a certain branch's battery pack breaks down, prevent contingency, be conducive to be individually replaced branch's battery pack, reduce use cost, and be conducive to management of the battery management system to electricity, to extend the service life of branch's battery pack.
Description
Technical field
The present invention relates to batteries of electric automobile packet control technology field, in particular to a kind of battery pack control system.
Background technique
The battery pack on mainstream electric car is made of single battery lodge body at present, and battery modules are arranged in electricity in an orderly manner
In the cabinet of pond.It, can be using integral replacing battery pack cabinet in order to not influence using when power shortage occurs for electricity in battery pack
Fast quick change method for electrically.This method is commonly available on the high high-cost electric car of continuation of the journey, and battery pack cabinet integral replacing
Equipment manufacturing cost higher cost.
The vehicle commander of short-distance electric car is smaller, therefore its battery pack size is smaller, and arranges more flexible changeable.Generally
This kind of electric car also uses single battery lodge body, however short-distance electric car possesses very extensive use crowd, vehicle
Frequency of use highest, since single battery packet box sizes are smaller and electricity is limited, when use, is easy to happen power shortage situation, and
It applies and integrally changes power technology in the high battery pack on high-cost electric car of continuing a journey, due to equipment cost of great number etc. simultaneously
Be not suitable for use on short-distance electric car, it is general also few to integral replacing on short-distance electric car in the prior art
The substitution of battery pack cabinet changes method for electrically.
Changing battery packet technology is that multiple branch's battery packs are carried out the use that is together in parallel, and passes through BMS, VCU, main relay
The coordinated controls such as device, branch's relay, data acquisition come meet the output power of vehicle, energy management, Electrical Safety, increase it is continuous
Boat extends the functions such as service life of battery pack, meets car owner's requirement used in everyday to reach.
Battery packet technology is changed currently, researching and developing there are also motor corporation, i.e., is used short-distance electric car
Single battery packet split into several branch's battery packs (such as four) and meanwhile use lower voltage platform (such as 48V), due to
Its smaller arrangement of the size of branch's battery pack is very flexible, may be arranged at forward engine room, boot etc., and selects lower voltage
Platform can largely reduce the application risk of car owner again, give up the misgivings of consumer, however change conductance there are still whole
Cause the deficiency of higher cost.
Summary of the invention
In view of this, the present invention is directed to propose a kind of battery pack control system, in order to which the energy to battery pack carries out pipe
Reason.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of battery pack control system, comprising:
At least two branch's battery packs being connected in parallel；
At least two branch's relays, the quantity of branch's relay is corresponding to the quantity of branch's battery pack, and
Each branch's relay is connect with each branch's battery pack respectively；
Battery management system is separately connected, the cell tube with each branch's relay and each branch's battery pack
Reason system is configured to respond in the status information of each branch's battery pack, and it is logical to control each branch's relay respectively
It is disconnected.
It further, further include the combination instrument being connect with the battery management system, and the combination instrument can be shown
The status information of each branch's battery pack.
It further, further include the entire car controller being connect with the battery management system, the entire car controller can obtain
The status information for the branch's battery pack for taking the battery management system to monitor, and can be sent to battery management system corresponding
Control signal, and control each branch's relay on-off respectively.
Further, the combination instrument is connect with the entire car controller, to show from the entire car controller
Information of vehicles.
Further, further include the car body control module being connect with the entire car controller, and with the Body Control mould
At least two weight sensors of block connection, the quantity of the weight sensor is corresponding to the quantity of branch's battery pack, respectively
The weight sensor is respectively arranged on the erection support of corresponding branch's battery pack, with can be by branch's battery pack
Weight information via the car body control module, be sent to the entire car controller.
Further, the combination instrument is connect with the car body control module, to show each branch's battery pack
Weight information.
Further, the weight information that the entire car controller is obtained in response to the car body control module, and
The status information that the battery management system obtains, and each branch's relay on-off is controlled respectively.
Further, the status information includes at least information of voltage, current information, temperature information and information about power.
It further, further include the vehicle distribution box being connect with each branch's battery pack, it is total in being configured in vehicle distribution box
Control circuit, the total control circuit include the fuse and main relay being connected in series, the fuse and each institute in parallel
The connection of branch's battery pack is stated, the total control circuit further includes the preliminary filling relay and preliminary filling resistance being connected in series, and series connection connects
Preliminary filling relay and preliminary filling resistance is connect to be connected in parallel with the main relay.
Compared with the existing technology, present invention has the advantage that
Battery pack control system of the present invention, be conducive to a certain branch's battery pack break down when in time cutting with
Its connected branch's relay prevents contingency, is conducive to be individually replaced branch's battery pack, reduces use cost,
And be conducive to management of the battery management system to electricity, to extend the service life of branch's battery pack.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic block circuit diagram of battery pack control system described in the embodiment of the present invention；
Fig. 2 is the control flow chart of battery pack control system described in the embodiment of the present invention；
Fig. 3 is the another control flow chart of battery pack control system described in the embodiment of the present invention；
Fig. 4 is another control flow chart of battery pack control system described in the embodiment of the present invention；
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The present embodiment is related to a kind of battery pack control system, as shown in Figure 1, it mainly includes at least two branch's batteries
Packet, at least two branch's relays and battery management system.
Specifically, each branch's battery pack is connected in parallel in together, the quantity of branch's relay and the number of branch's battery pack
Amount is corresponding, and each branch's relay is connect with each branch's battery pack respectively；Such as the quantity of branch's battery pack is four, respectively
It is numbered 1., 2., 3., 4., four branch's battery packs are connected in parallel to each other and platform voltage having the same (such as 48V), then
The quantity of branch's relay is also four, it is numbered respectively 1#, 2#, 3#, 4#, and each branch's battery pack passes through accordingly
Branch's relay be connected with vehicle distribution box, with by control branch's relay on-off realize branch's battery pack energy
It supplies and disconnects.
In the structure, vehicle distribution box is the unit that high-pressure energy is distributed in vehicle；The quantity of branch's battery pack is not limited to
Four, can also be other quantity, such as two, three or five etc.；The platform voltage that branch's battery pack uses is not limited to
48V can also be other voltages, such as 60V.
Herein it should be noted that be branch's relay quantity can for one or two, if the quantity of branch's relay be one
A, then it is the positive relay of branch connect with branch battery pack anode, or is born for the branch connecting with branch battery pack cathode
Relay；If the quantity of branch's relay is two, one connecting with the positive of branch battery pack, another and branch's battery
The cathode of packet connects.
Battery management system above-mentioned can be existing structure, write a Chinese character in simplified form BMS, be mainly used for receiving by the way that various sensors are comprehensive
The status information of Ji Ge branch battery pack, such as information of voltage, current information, temperature information and information about power.Battery management system
System is separately connected with each branch's relay and each branch's battery pack, and battery management system is believed in response to the state of each branch's battery pack
Breath, and each branch's relay on-off is controlled respectively, this is suitable for the vehicle of not following VCU.
Battery pack control system of the invention further includes the combination instrument connecting with battery management system, and combination instrument can
Show the status information, such as electric current, voltage, electricity, temperature etc. of each branch's battery pack.
Battery pack control system of the invention further includes the entire car controller connecting with battery management system, entire car controller
VCU is write a Chinese character in simplified form, can also be existing structure, be mainly used for all information of comprehensive collection vehicle and judged accordingly, use
In the status information for obtaining branch's battery pack that battery management system monitors, and corresponding control can be sent to battery management system
Signal processed, and each branch's relay on-off is controlled after being judged respectively.Combination instrument above-mentioned is connect with entire car controller, with
Show information of vehicles from entire car controller, such as course continuation mileage, currently available maximum power, car owner's prompt information etc..
This battery pack control system further includes the car body control module connecting with entire car controller, and and car body control module
At least two weight sensors of connection.Wherein: car body control module can be existing structure, abbreviation BCM, the number of weight sensor
Amount is corresponding to the quantity of branch's battery pack, and each weight sensor is respectively arranged on the erection support of corresponding branch's battery pack,
Entire car controller can be sent to, to judge erection support by the weight information of branch's battery pack via car body control module
On whether branch's battery pack is installed.Combination instrument above-mentioned is connect with car body control module, to show each branch's battery pack
Weight information, such as battery pack are online or offline.
Entire car controller is in response to the car body control module weight information obtained and the state of battery management system acquisition
Information, and each branch's relay on-off is controlled respectively.The reason of considering weight information and status information simultaneously is to prevent the two
One damages caused error in judgement, to improve the precise degrees of judgement.
This battery pack control system further includes the vehicle distribution box connecting with each branch's battery pack, is matched in vehicle distribution box
It is equipped with total control circuit, total control circuit includes the fuse and main relay being connected in series, fuse and each branch in parallel
Battery pack connection, total control circuit further includes the preliminary filling relay and preliminary filling resistance being connected in series, and preliminary filling relay is connected in series
Device and preliminary filling resistance are connected in parallel with main relay.
In the structure, main relay is the relay for controlling battery package current switching, and preliminary filling relay is control vehicle
The relay of capacitor charging, preliminary filling resistance are to reduce to power on initial stage to the resistance of capacitor charging rush of current on vehicle, and fuse is
The electrical component of overcurrent protection is played in vehicle.In addition, the quantity of main relay can be one or two, if main relay
Quantity be one, then it is to be connected to the positive relay of master of circuit anode, or to be connected to the negative relay of the master of circuit cathode；
If the quantity of main relay is two, one is connected to the anode of circuit, another is connected to the cathode of circuit.
Vehicle powered operation process is as follows: just starts main relay and disconnected, preliminary filling relay conducting, due to preliminary filling resistance
In the presence of main relay is connected after a period of work, and preliminary filling relay disconnects, and is mainly used for reducing powering on initial stage to capacitor on vehicle
Rush of current caused by charging.
VCU above-mentioned is the main element for judging vehicle trouble type, if car owner replaces branch's battery pack or occurs serious
After failure, the information on ICU allows to jump (such as continual mileage, currently available maximum electric power, battery capacity), remaining feelings
Condition (when branch's battery pack voltage or unbalanced electricity) does not allow information above to jump.
Battery pack control system of the invention substantially will appear following several situations in car owner in actual use:
Situation one: there is generic failure in branch's battery pack
As shown in Fig. 2, with the SOC (remaining capacity of branch's battery pack) of branch's battery pack 1. lower than branch's battery pack 2.,
Branch's battery pack 3. with branch battery pack 4. for, 2. 3. if BMS detects the SOC of branch's battery pack 1. lower than branch's battery pack
4. SOC10%, BMS reports VCU request to disconnect branch's battery pack branch relay 1# 1., VCU by comprehensive descision, such as
The rear transmission such as environment temperature, vehicle insulation, complete vehicle fault cuts off the 1# order of branch's relay, and BMS control branch's battery pack is 1.
Branch relay 1# is disconnected, and BMS feedback VCU relay has disconnected, and carries out necessary vehicle output power limit by VCU, smoothly
Electric current is exported, does not influence vehicle comfort, VCU is fed back to ICU allows information jump instruction, and ICU shows that after the jump information is same
When relevant information prompt is done to driver.
If the SOC of BMS detection branches battery pack 1. lower than branch's battery pack 2., branch's battery pack 3. with branch battery pack 4.
SOC5% when, BMS reports VCU request connection branch's battery pack branch relay 1# 1., VCU to send after passing through comprehensive descision
The 1# order of branch's relay is connected, BMS controls the branch's relay 1# connection of branch's battery pack 1., and VCU decontrols vehicle output work
Rate limitation, smoothly exports electric current, does not influence vehicle comfort.
Situation two: there is catastrophe failure in branch's battery pack
As shown in figure 3, BMS detects 1. branch's battery pack occurs sternly by taking 1. branch's battery pack catastrophe failure occurs as an example
Weight failure, BMS report VCU request to disconnect the branch relay 1# of branch's battery pack 1., and VCU sends cutting after passing through comprehensive descision
Branch's relay 1# order, BMS control the branch relay 1# of branch's battery pack 1. and disconnect, and BMS feedback VCU relay has broken
It opens.VCU carries out necessary vehicle output power limit, smoothly exports electric current, does not influence vehicle comfort, and VCU is fed back to ICU to be permitted
Perhaps information jump instruction, ICU show after the jump information while doing relevant information prompt to driver.
Situation three: replacement branch's battery pack
As shown in figure 4, BCM detects the shape of branch's battery pack 1. on support 1 by taking 1. branch's battery pack is removed as an example
State is offline, while BMS can't detect branch's battery pack 1. information, and BCM reports support status information feedback to VCU, BMS
VCU request disconnects the branch relay 1# of branch's battery pack 1., and VCU sends cutting branch's relay 1# life after passing through comprehensive descision
It enables, BMS controls the branch relay 1# of branch's battery pack 1. and disconnects, and BMS feedback VCU relay has disconnected.VCU carries out necessary
Vehicle output power limit, the smooth electric current that exports do not influence vehicle comfort, and VCU is fed back to ICU allows information jump instruction,
ICU shows after the jump information while doing relevant information prompt to driver.
If 1. car owner reinstalls new branch's battery pack after, BCM detects the shape of branch's battery pack 1. on support 1
State is online, while BMS detects branch's battery pack 1. information, BMS report the branch of VCU request connection branch's battery pack 1. after
Electric appliance 1#, VCU, which pass through, sends connection branch's relay 1# order after comprehensive descision, the branch of BMS control branch's battery pack 1. after
Electric appliance 1# connection.VCU decontrols vehicle output power limit, and the smooth electric current that exports does not influence vehicle comfort, and VCU is fed back to ICU
Allow information jump instruction, ICU shows after the jump information while doing relevant information prompt to driver.
By the analysis of above several specific situations, the present invention, which can reach, meets the requirement that replacement branch's battery pack uses.
In order to reduce, branch's relay is disconnected or connection procedure disconnects or connect relay to the influence VCU of vehicle power output moulding
After need immediately to output electric current limited accordingly, such as using smoothed curve, ladder drop stream, ladder flow up, conic section
The methods of drop stream, conic section up-flow, in order to avoid influence the comfort of driver.
Several operative scenarios described above can not only judge the disconnected of branch's relay according to the SOC of each branch's battery pack
It opens or connects, can also judge whether to need to disconnect according to the particular state (such as temperature, insulation, voltage) of each branch's battery pack
Or connection branch's relay.When vehicle encounters catastrophe failure, then can by VCU cut off main relay, BMS cut off branch after
Electric appliance.
Control branch's relay described above disconnects or the function of connection, can distribute to multiple controllers and complete,
It can only be completed by a controller.Such as not in the vehicle of VCU, relay disconnects or the judgement and its trigger condition of connection
Judge to complete by BMS, current-limiting method is also voluntarily completed by BMS.
Battery pack control system of the invention, convenient for the energy of the branch's battery pack, battery package exchanged in electric battery pack
Be managed, can the output power to vehicle reasonably controlled, can reasonably distribute the energy in battery package, energy
Enough promote the service life of branch's battery pack.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of battery pack control system, characterized by comprising:
At least two branch's battery packs being connected in parallel；
At least two branch's relays, the quantity of branch's relay is corresponding to the quantity of branch's battery pack, and each institute
Branch's relay is stated to connect with each branch's battery pack respectively；
Battery management system is separately connected, the battery management system with each branch's relay and each branch's battery pack
System is configured to respond in the status information of each branch's battery pack, and controls each branch's relay on-off respectively.
2. battery pack control system according to claim 1, it is characterised in that: further include connecting with the battery management system
The combination instrument connect, and the combination instrument can show the status information of each branch's battery pack.
3. battery pack control system according to claim 2, it is characterised in that: further include connecting with the battery management system
The entire car controller connect, the entire car controller can obtain the shape for branch's battery pack that the battery management system monitors
State information, and corresponding control signal can be sent to battery management system, and each branch's relay on-off is controlled respectively.
4. battery pack control system according to claim 3, it is characterised in that: the combination instrument and the full-vehicle control
Device connection, to show the information of vehicles from the entire car controller.
5. battery pack control system according to claim 2, it is characterised in that: further include being connect with the entire car controller
Car body control module, and at least two weight sensors being connect with the car body control module, the weight sensor
Quantity is corresponding to the quantity of branch's battery pack, and each weight sensor is respectively arranged in corresponding branch's battery pack
Erection support on, can be sent to described whole by the weight information of branch's battery pack via the car body control module
Vehicle controller.
6. battery pack control system according to claim 5, it is characterised in that: the combination instrument and the Body Control
Module connection, to show the weight information of each branch's battery pack.
7. battery pack control system according to claim 5, it is characterised in that: the entire car controller is in response to the vehicle
The status information that the weight information and the battery management system that body control module obtains obtain, and control respectively
Make each branch's relay on-off.
8. battery pack control system according to claim 1, it is characterised in that: the status information is believed including at least voltage
Breath, current information, temperature information and information about power.
9. battery pack control system according to claim 1 to 8, it is characterised in that: further include and each branch's electricity
The vehicle distribution box of Chi Bao connection, in being configured with total control circuit in vehicle distribution box, the total control circuit includes that series connection connects
The fuse and main relay connect, the fuse are connect with each branch's battery pack in parallel, and the total control circuit is also
Preliminary filling relay and preliminary filling resistance including series connection, and preliminary filling relay and preliminary filling resistance and the main relay is connected in series
Device is connected in parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910496983.5A CN110254288A (en) | 2019-06-10 | 2019-06-10 | Battery pack control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910496983.5A CN110254288A (en) | 2019-06-10 | 2019-06-10 | Battery pack control system |
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| CN110254288A true CN110254288A (en) | 2019-09-20 |
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| CN201910496983.5A Pending CN110254288A (en) | 2019-06-10 | 2019-06-10 | Battery pack control system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110768330A (en) * | 2019-10-18 | 2020-02-07 | 湖南小步科技有限公司 | Charging and discharging control method and device and UPS system |
| CN112440821A (en) * | 2020-11-30 | 2021-03-05 | 奇瑞商用车（安徽）有限公司 | Power battery grouping and partitioning utilization control system and method |
| CN112477681A (en) * | 2020-11-30 | 2021-03-12 | 浙江吉利控股集团有限公司 | Vehicle battery replacement control method, device, equipment and storage medium |
| CN113386615A (en) * | 2021-06-03 | 2021-09-14 | 神龙汽车有限公司 | System and method for battery sub-package replacement of electric automobile in power-off state of whole automobile |
| CN113386618A (en) * | 2020-03-14 | 2021-09-14 | 帝亚一维新能源汽车有限公司 | Strategy method for use after portable battery replacement pack falls |
| CN114506246A (en) * | 2022-03-15 | 2022-05-17 | 厦门金龙联合汽车工业有限公司 | Time-sharing control method for power battery power conversion system of electric automobile |
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| CN113386615A (en) * | 2021-06-03 | 2021-09-14 | 神龙汽车有限公司 | System and method for battery sub-package replacement of electric automobile in power-off state of whole automobile |
| CN114506246A (en) * | 2022-03-15 | 2022-05-17 | 厦门金龙联合汽车工业有限公司 | Time-sharing control method for power battery power conversion system of electric automobile |
| CN114506246B (en) * | 2022-03-15 | 2023-04-18 | 厦门金龙联合汽车工业有限公司 | Time-sharing control method of power battery power conversion system of electric automobile |
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