CN209141936U - A kind of low-speed electronic vehicle electrokinetic cell system - Google Patents
A kind of low-speed electronic vehicle electrokinetic cell system Download PDFInfo
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- CN209141936U CN209141936U CN201821918577.0U CN201821918577U CN209141936U CN 209141936 U CN209141936 U CN 209141936U CN 201821918577 U CN201821918577 U CN 201821918577U CN 209141936 U CN209141936 U CN 209141936U
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- battery pack
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- oxide
- field effect
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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 utility model discloses a kind of low-speed electronic vehicle electrokinetic cell systems, the electrokinetic cell system includes power battery pack, BMS and main fuse, the BMS includes BMS main circuit, battery pack voltage collection circuit, main circuit current Acquisition Circuit, the electrokinetic cell system includes preliminary filling control circuit, main relay, high-pressure insert, the preliminary filling control circuit is connect with the BMS main circuit, the anode of the power battery pack is connected to the anode of the high-pressure insert after connecting with the preliminary filling control circuit, the anode of the power battery pack is connected to the anode of the high-pressure insert after also connecting with the normally opened contact of the main relay, the both ends of the coil of the main relay are connect with the BMS main circuit.Preliminary filling control circuit, main relay, battery heating control circuit are integrated into the BMS of low-speed electronic vehicle by the utility model, are enormously simplified circuit structure and harness arrangement inside battery pack, are effectively reduced device cost.
Description
Technical field
The utility model relates to power battery system of electric vehicle field, in particular to a kind of low-speed electronic vehicle power battery system
System.
Background technique
BMS (BATTERY MANAGEMENT SYSTEM) is the abbreviation of battery management system, the battery system packet of electric vehicle
Containing power battery pack and BMS two large divisions.Low-speed electronic automobile is generally powered by lead-acid accumulator or lithium ion battery.Due to
The disadvantages such as lead-acid accumulator energy density is low, lead contamination, charge and discharge photoelectric transformation efficiency is low, cycle life is low, nowadays low-speed electronic vapour
The battery pack of vehicle is gradually replaced lithium ion battery packet.
The BMS of existing low-speed electronic automobile is the design scheme for continuing to use high speed electric vehicle mostly, such system architecture is multiple
It is miscellaneous, in usual BMS comprising independently installed preliminary filling relay, preliminary filling resistance, battery heating relay, Hall current sensor,
The discrete devices such as trickle charge relay, charge circuit and discharge loop separately design, and control harness is more, higher cost, simultaneously for
The professional technique Capability Requirement of the engineer of low-speed electronic depot is high, this undoubtedly increase low-speed electronic depot development cost and
Human resources investment.
Therefore how by preliminary filling circuit, the charging of power battery pack, discharge loop, battery heating circuit be integrated into BMS (electricity
Pond management system) in, become urgent problem to be solved in practice.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of low-speed electronic vehicle power battery system
System, preliminary filling circuit, the charging of power battery pack, discharge loop, battery heating circuit are integrated into BMS, can not only be reduced
The volume and weight of entire battery system, can also reduce the cost of system.
To achieve the goals above, the technical solution adopted in the utility model are as follows:
Low-speed electronic vehicle electrokinetic cell system, the electrokinetic cell system include power battery pack, BMS and main fuse,
The BMS includes BMS main circuit, battery pack voltage collection circuit, main circuit current Acquisition Circuit, the BMS main circuit difference
It is connect with the battery pack voltage collection circuit, main circuit current Acquisition Circuit, the main circuit current Acquisition Circuit is through main guarantor
Dangerous silk is connected to the cathode of the power battery pack, and the electrokinetic cell system includes preliminary filling control circuit, main relay, high pressure
Plug-in unit, the preliminary filling control circuit are connect with the BMS main circuit, anode and the preliminary filling control electricity of the power battery pack
Be connected to the anode of the high-pressure insert after the series connection of road, the anode of the power battery pack also with the normally opened touching of the main relay
The anode of the high-pressure insert is connected to after point series connection, the both ends of the coil of the main relay are connect with the BMS main circuit,
The both ends of the battery pack voltage collection circuit are connect with the both ends of the preliminary filling control circuit, the battery pack voltage acquisition electricity
The both ends on road are also connect with the cathode of the cathode of the high-pressure insert, power battery pack respectively.
The preliminary filling control circuit includes the first metal-oxide-semiconductor field effect transistor, the second metal-oxide-semiconductor field effect transistor, resistance R1, R2, and described the
One metal-oxide-semiconductor field effect transistor is in parallel with the second metal-oxide-semiconductor field effect transistor, and the resistance R1 is in parallel with resistance R2, and one end of the resistance R1 connects
It is connected to the anode of the high-pressure insert, the other end of the resistance R1 is connected to the drain electrode of first metal-oxide-semiconductor field effect transistor, described
The source electrode of first metal-oxide-semiconductor field effect transistor is connect with the anode of the power battery pack, the grid of first metal-oxide-semiconductor field effect transistor and institute
State the connection of BMS main circuit.
The BMS includes battery heating control circuit, battery heating film, the cathode of the power battery pack successively with battery
The anode of the high-pressure insert is connected to after heating film, the series connection of battery heating control circuit, the battery heating control circuit is also
It is connect with the BMS main circuit.
The battery heating control circuit includes fuse, third metal-oxide-semiconductor field effect transistor, the 4th metal-oxide-semiconductor field effect transistor, and described
Three metal-oxide-semiconductor field effect transistors are in parallel with the 4th metal-oxide-semiconductor field effect transistor, and the drain electrode of the third metal-oxide-semiconductor field effect transistor is through fuse and the height
The anode connection of plug-in unit is pressed, the source electrode of the third metal-oxide-semiconductor field effect transistor is connected to the power battery through the battery heating film
The cathode of packet, the grid of the third metal-oxide-semiconductor field effect transistor are connect with the BMS main circuit.
First metal-oxide-semiconductor field effect transistor, the second metal-oxide-semiconductor field effect transistor, third metal-oxide-semiconductor field effect transistor, the 4th metal-oxide-semiconductor field effect transistor are equal
For N-channel MOS field-effect tube.
The BMS includes power module, and the power module is connect with the BMS main circuit.
The BMS includes cell information Acquisition Circuit, and the cell information Acquisition Circuit samples harness and institute by battery core
State power battery pack connection.
The electrokinetic cell system includes balance module, and one end of the balance module is connected to the power battery pack
Anode, the other end of the balance module are connected to the cathode of the power battery pack.
The electrokinetic cell system includes insulation monitoring module, and one end of the insulation monitoring module is connected to the power
The anode of battery pack, the other end of the insulation monitoring module are connected to the cathode of the power battery pack.
The BMS further includes the communication module connecting with the power module, and the balance module, insulation monitoring module are equal
It is connected and communicated by the communication module and the BMS main circuit.
Utility model has the advantages that preliminary filling control circuit, battery heating control circuit are integrated by the utility model
BMS can not only reduce the volume and weight of entire battery system, can also reduce the cost of system.
Detailed description of the invention
Below to each width attached drawing of the utility model specification expression content and figure in label be briefly described:
Fig. 1 is the structural schematic diagram of the utility model low-speed electronic vehicle electrokinetic cell system；
Fig. 2 is the circuit diagram of the preliminary filling control circuit of the utility model low-speed electronic vehicle electrokinetic cell system；
Fig. 3 is the circuit diagram of the battery heating control circuit of the utility model low-speed electronic vehicle electrokinetic cell system.
Label in above-mentioned figure is equal are as follows:
1, power battery pack；2,BMS；3, main fuse；4, BMS main circuit；5, battery pack voltage collection circuit；6, it leads back
Road current collection circuit；7, preliminary filling control circuit；8, main relay；9, high-pressure insert；10, the first metal-oxide-semiconductor field effect transistor；11,
Two metal-oxide-semiconductor field effect transistors；12, battery heating control circuit；13, battery heating film；14, fuse；15, third metal-oxide-semiconductor field effect transistor；
16, the 4th metal-oxide-semiconductor field effect transistor；17, power module；18, cell information Acquisition Circuit；19, balance module；20, Insulation monitoring mould
Block；21, communication module.
Specific embodiment
Specific embodiment of the present utility model is made into one by the description to optimum embodiment below against attached drawing
Step detailed description.
As shown in Figure 1, being the structural schematic diagram of the utility model low-speed electronic vehicle electrokinetic cell system.In the embodiment
In, which includes power battery pack 1, BMS2 and main fuse 3, and BMS2 is through main fuse 3 and power battery pack 1
Connection, the BMS2 includes BMS main circuit 4, battery pack voltage collection circuit 5, main circuit current Acquisition Circuit 6, the BMS master
Circuit 4 is connect with the battery pack voltage collection circuit 5, main circuit current Acquisition Circuit 6 respectively, the main circuit current acquisition
Circuit 6 is connected to the cathode of the power battery pack 1 through main fuse 3, and the electrokinetic cell system includes preliminary filling control circuit
7, main relay 8, high-pressure insert 9, the preliminary filling control circuit 7 are connect with the BMS main circuit 4, the power battery pack 1
It is positive connect with the preliminary filling control circuit 7 after be connected to the anode of the high-pressure insert 9, the anode of the power battery pack 1
The anode of the high-pressure insert 9, the line of the main relay 8 are connected to after also connecting with the normally opened contact of the main relay 8
The both ends of circle are connect with the BMS main circuit 4, for controlling the disconnection and closure of main relay.
The both ends of the battery pack voltage collection circuit 5 are connect with the both ends of the preliminary filling control circuit 7, are used for preliminary filling
Link+ the and Pack+ voltage signal at circuit both ends introduces battery pack voltage collection circuit 5, the battery pack voltage collection circuit 5
Both ends also connect respectively with the cathode of the cathode of the high-pressure insert 9, power battery pack 1, for high voltage negative voltage to be believed
Number link-, 1 cathode voltage signal Pack- of power battery pack is introduced into battery pack voltage collection circuit 5.
When power battery pack 1 is externally discharged, first the capacitor in the high voltage electric device connected outside battery system is filled
Electricity prevents high voltage electric device from damaging because of voltge surge.It disconnects at this point, BMS main circuit 4 controls main relay 8, sends simultaneously
Preliminary filling controls signal to preliminary filling control circuit 7, so that preliminary filling control circuit 7 is connected, so that power battery pack 1 is controlled by preliminary filling
Circuit externally discharges.When BMS main circuit 4 detects that Link+ and Link- both end voltage reaches the both ends Pack+ and Pack- in 2s
After the 90% of voltage, indicate that preliminary filling is completed.It obtains electric at this point, BMS main circuit 4 controls main relay coil, it is normal to be attracted main relay 8
Contact is opened, preliminary filling control circuit 7 is simultaneously switched off, power battery pack 1 starts externally to discharge.In discharge process, power battery pack 1
Electricity constantly reduces, and when power battery pack 1 needs to charge, the safety that BMS main circuit 4 controls battery charge circuit is connected, complete
The charging process of pairs of power battery.
In addition, in 1 charge or discharge of power battery pack, when BMS main circuit 4 monitors main circuit current Acquisition Circuit
When electric current measured by 6 is more than the maximum charging current or maximum discharge current of preset value, BMS main circuit 4 will control main relay 8
Coil losing electricity disconnects main relay 8, prevents overcurrent from the battery core in circuit and high tension apparatus being caused to be damaged.
When electric current is more than the maximum current that main fuse 3 can bear in main circuit current Acquisition Circuit 6, main fuse
3 fusing, disconnect circuit.
Above-mentioned BMS main circuit 4, battery pack voltage collection circuit 5, main circuit current Acquisition Circuit 6 belong to existing skill
Art, as long as above-mentioned function may be implemented, specific structure is herein with no restrictions.
Further, above-mentioned preliminary filling control circuit 7 includes the first metal-oxide-semiconductor field effect transistor 10, the second metal-oxide-semiconductor field effect transistor 11, electricity
R1, R2 are hindered, first metal-oxide-semiconductor field effect transistor 10 is in parallel with the second metal-oxide-semiconductor field effect transistor 11, and the resistance R1 is in parallel with resistance R2,
One end of the resistance R1 is connected to the anode of the high-pressure insert 9, and the other end of the resistance R1 is connected to the first MOS
The drain electrode of field-effect tube 10, the source electrode of first metal-oxide-semiconductor field effect transistor 10 is connect with the anode of the power battery pack 1, described
The grid of first metal-oxide-semiconductor field effect transistor 10 is connect with the BMS main circuit 4.Preferably, above-mentioned first metal-oxide-semiconductor field effect transistor 10, second
Metal-oxide-semiconductor field effect transistor 11 is N-channel MOS field-effect tube.When power battery pack 1 needs externally to discharge, BMS main circuit 4 is sent
Preliminary filling controls signal to preliminary filling control circuit 7, controls the first metal-oxide-semiconductor field effect transistor 10 and the second metal-oxide-semiconductor field effect transistor 11 simultaneously turns on,
And then precharging circuit is connected, so that power battery pack 1 is externally discharged by precharging circuit.
In order to solve under cryogenic, ambient temperature is lower than the normal charge and discharge electro-temperature of power battery pack 1, leads to power
The problem of battery pack 1 can not work normally, further, the BMS include battery heating control circuit 12, battery heating film
13, the cathode of the power battery pack 1 is connected to described after successively connecting with battery heating film 13, battery heating control circuit 12
The anode of high-pressure insert 9, the battery heating control circuit 12 are also connect with the BMS main circuit 4.
When power battery pack 1 needs to heat, BMS main circuit 4 sends thermal control signals to battery heating control circuit
12, its conducting is controlled, 13 galvanization of battery heating film is heated, until environment temperature locating for power battery pack 1 is reaching it just
Normal operating temperature section, the control of BMS main circuit 4 disconnect heating circuit.
Further, the battery heating control circuit 12 includes fuse 14, third metal-oxide-semiconductor field effect transistor the 15, the 4th
Metal-oxide-semiconductor field effect transistor 16, the third metal-oxide-semiconductor field effect transistor 15 is in parallel with the 4th metal-oxide-semiconductor field effect transistor 16, the 3rd MOS field-effect
The drain electrode of pipe 15 is connect through fuse 14 with the anode of the high-pressure insert 9, and the source electrode of the third metal-oxide-semiconductor field effect transistor 15 is through institute
State the cathode that battery heating film 13 is connected to the power battery pack 1, the grid of the third metal-oxide-semiconductor field effect transistor 15 with it is described
BMS main circuit 4 connects.Preferably, above-mentioned third metal-oxide-semiconductor field effect transistor 15, the 4th metal-oxide-semiconductor field effect transistor 16 are N-channel MOS field effect
Ying Guan.When needing to heat power battery pack 1, BMS main circuit 4 sends thermal control signals and gives heating control circuit electricity
Road 12, controls third metal-oxide-semiconductor field effect transistor 15 and the 4th metal-oxide-semiconductor field effect transistor 16 simultaneously turns on, and then heating circuit is connected, so that peace
Battery heating film 13 near power battery pack 1 obtains electric fever, to realize the heating to power battery pack 1.
Further, the BMS includes power module 17, and the power module 17 is connect with the BMS main circuit 4, is used
In providing power supply for BMS main circuit 4.
In order to charge in power battery pack, in discharge process, the real time capacity of power battery pack is calculated, further, institute
State the cell information Acquisition Circuit 18 that BMS includes the battery core electric current and voltage for acquiring power battery pack 1, the cell information
Acquisition Circuit 18 samples harness by battery core and connect with the power battery pack 1.
In order to which the capacity, the voltage that guarantee to form thousands of battery cores of power battery pack 1 are consistent, prevent because battery core is held
The inconsistent electricity for leading to battery of amount cannot be released sufficiently, or cannot be completely filled with the situation of electricity, further, described dynamic
Power battery system includes balance module 19, and one end of the balance module 19 is connected to the anode of the power battery pack 1, described
The other end of balance module 19 is connected to the cathode of the power battery pack 1.
In order to detect the state of insulation of power battery pack 1, further, the electrokinetic cell system includes Insulation monitoring mould
Block 20, one end of the insulation monitoring module 20 are connected to the anode of the power battery pack 1, the insulation monitoring module 20
The other end is connected to the cathode of the power battery pack 1.
Further, the BMS further includes the communication module 21 connecting with the power module 17, the balance module
19, insulation monitoring module 20 is connected and communicated by the communication module 21 and the BMS main circuit 4.
Above-mentioned cell information Acquisition Circuit 18, balance module 19, insulation monitoring module 20, communication module 21 are all made of existing
There is the structure in technology, as long as being able to achieve corresponding function, with no restrictions to its specific structure at this.
Obvious the utility model specific implementation is not subject to the restrictions described above, as long as the method for using the utility model
The improvement for the various unsubstantialities that conception and technical scheme carry out, both is within the protection scope of the present invention.
Claims (10)
1. a kind of low-speed electronic vehicle electrokinetic cell system, the electrokinetic cell system includes power battery pack (1), BMS (2) and master
Fuse (3), the BMS (2) include BMS main circuit (4), battery pack voltage collection circuit (5), main circuit current Acquisition Circuit
(6), the BMS main circuit (4) connects with the battery pack voltage collection circuit (5), main circuit current Acquisition Circuit (6) respectively
It connects, the main circuit current Acquisition Circuit (6) is connected to the cathode of the power battery pack (1), feature through main fuse (3)
Be: the electrokinetic cell system includes preliminary filling control circuit (7), main relay (8), high-pressure insert (9), the preliminary filling control
Circuit (7) is connect with the BMS main circuit (4), and anode and the preliminary filling control circuit (7) of the power battery pack (1) are gone here and there
Be connected to the anode of the high-pressure insert (9) after connection, the anode of the power battery pack (1) also with the main relay (8)
Be connected to the anodes of the high-pressure insert (9) after normally opened contact series connection, the both ends of the coil of the main relay (8) with it is described
The both ends of BMS main circuit (4) connection, the both ends of the battery pack voltage collection circuit (5) and the preliminary filling control circuit (7) connect
Connect, the both ends of the battery pack voltage collection circuit (5) also respectively with the cathode of the high-pressure insert (9), power battery pack (1)
Cathode connection.
2. low-speed electronic vehicle electrokinetic cell system according to claim 1, it is characterised in that: the preliminary filling control circuit
It (7) include the first metal-oxide-semiconductor field effect transistor (10), the second metal-oxide-semiconductor field effect transistor (11), resistance R1, R2, first metal-oxide-semiconductor field effect transistor
(10) in parallel with the second metal-oxide-semiconductor field effect transistor (11), the resistance R1 is in parallel with resistance R2, and one end of the resistance R1 is connected to institute
The anode of high-pressure insert (9) is stated, the other end of the resistance R1 is connected to the drain electrode of first metal-oxide-semiconductor field effect transistor (10), institute
The source electrode for stating the first metal-oxide-semiconductor field effect transistor (10) is connect with the anode of the power battery pack (1), first metal-oxide-semiconductor field effect transistor
(10) grid is connect with the BMS main circuit (4).
3. low-speed electronic vehicle electrokinetic cell system according to claim 2, it is characterised in that: the BMS includes that battery adds
Thermal control circuit (12), battery heating film (13), the cathode of the power battery pack (1) successively with battery heating film (13), electricity
The anode of the high-pressure insert (9), the battery heating control circuit (12) are connected to after pond heating control circuit (12) series connection
Also it is connect with the BMS main circuit (4).
4. low-speed electronic vehicle electrokinetic cell system according to claim 3, it is characterised in that: the battery computer heating control electricity
Road (12) includes fuse (14), third metal-oxide-semiconductor field effect transistor (15), the 4th metal-oxide-semiconductor field effect transistor (16), the described 3rd MOS effects
Should manage that (15) are in parallel with the 4th metal-oxide-semiconductor field effect transistor (16), the drain electrode of the third metal-oxide-semiconductor field effect transistor (15) through fuse (14) with
The anode connection of the high-pressure insert (9), the source electrode of the third metal-oxide-semiconductor field effect transistor (15) connect through the battery heating film (13)
It is connected to the cathode of the power battery pack (1), the grid of the third metal-oxide-semiconductor field effect transistor (15) and the BMS main circuit (4) are even
It connects.
5. according to the described in any item low-speed electronic vehicle electrokinetic cell systems of claim 2 to 4, it is characterised in that: described first
Metal-oxide-semiconductor field effect transistor (10), the second metal-oxide-semiconductor field effect transistor (11), third metal-oxide-semiconductor field effect transistor (15), the 4th metal-oxide-semiconductor field effect transistor (16) are equal
For N-channel MOS field-effect tube.
6. low-speed electronic vehicle electrokinetic cell system according to claim 5, it is characterised in that: the BMS includes power supply mould
Block (17), the power module (17) connect with the BMS main circuit (4).
7. low-speed electronic vehicle electrokinetic cell system according to claim 6, it is characterised in that: the BMS includes battery core letter
It ceases Acquisition Circuit (18), the cell information Acquisition Circuit (18) samples harness and the power battery pack (1) even by battery core
It connects.
8. low-speed electronic vehicle electrokinetic cell system according to claim 7, it is characterised in that: the electrokinetic cell system packet
It includes balance module (19), one end of the balance module (19) is connected to the anode of the power battery pack (1), the equilibrium model
The other end of block (19) is connected to the cathode of the power battery pack (1).
9. low-speed electronic vehicle electrokinetic cell system according to claim 8, it is characterised in that: the electrokinetic cell system packet
It includes insulation monitoring module (20), one end of the insulation monitoring module (20) is connected to the anode of the power battery pack (1), institute
The other end for stating insulation monitoring module (20) is connected to the cathode of the power battery pack (1).
10. low-speed electronic vehicle electrokinetic cell system according to claim 9, it is characterised in that: the BMS further includes and institute
The communication module (21) of power module (17) connection is stated, the balance module (19), insulation monitoring module (20) are by described
Communication module (21) is connected and communicated with the BMS main circuit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821918577.0U CN209141936U (en) | 2018-11-21 | 2018-11-21 | A kind of low-speed electronic vehicle electrokinetic cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821918577.0U CN209141936U (en) | 2018-11-21 | 2018-11-21 | A kind of low-speed electronic vehicle electrokinetic cell system |
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| Publication Number | Publication Date |
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| CN209141936U true CN209141936U (en) | 2019-07-23 |
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ID=67286735
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| CN201821918577.0U Active CN209141936U (en) | 2018-11-21 | 2018-11-21 | A kind of low-speed electronic vehicle electrokinetic cell system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114274831A (en) * | 2021-12-28 | 2022-04-05 | 徐州徐工新能源汽车有限公司 | Battery replacement assembly, control method thereof, battery replacement vehicle and battery replacement system |
-
2018
- 2018-11-21 CN CN201821918577.0U patent/CN209141936U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114274831A (en) * | 2021-12-28 | 2022-04-05 | 徐州徐工新能源汽车有限公司 | Battery replacement assembly, control method thereof, battery replacement vehicle and battery replacement system |
| CN114274831B (en) * | 2021-12-28 | 2024-03-15 | 徐州徐工新能源汽车有限公司 | Battery power conversion assembly and control method thereof, power conversion car and power conversion system |
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