CN116073464A - Power battery charging system - Google Patents

Power battery charging system Download PDF

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Publication number
CN116073464A
CN116073464A CN202111301266.6A CN202111301266A CN116073464A CN 116073464 A CN116073464 A CN 116073464A CN 202111301266 A CN202111301266 A CN 202111301266A CN 116073464 A CN116073464 A CN 116073464A
Authority
CN
China
Prior art keywords
relay
charging
power battery
interface
negative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111301266.6A
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Chinese (zh)
Inventor
姚伟浩
祝云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GAC Aion New Energy Automobile Co Ltd
Original Assignee
GAC Aion New Energy Automobile Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GAC Aion New Energy Automobile Co Ltd filed Critical GAC Aion New Energy Automobile Co Ltd
Priority to CN202111301266.6A priority Critical patent/CN116073464A/en
Publication of CN116073464A publication Critical patent/CN116073464A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • 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
    • B60L53/10—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 the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric 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
    • 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
    • B60L53/30—Constructional details of charging stations
    • B60L53/31—Charging columns specially adapted for electric 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
    • 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
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/19—Switching between serial connection and parallel connection of battery modules
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The invention discloses a power battery charging system which comprises a first power battery, a second power battery, a main positive relay, a main negative relay, a first quick charging relay, a second quick charging relay, a third quick charging relay, a fourth quick charging relay, a pre-charging resistor, a positive interface and a negative interface, and can realize high-voltage quick charging, low-voltage quick charging, pre-charging and slow charging of the power battery. According to the invention, through electric framework adjustment, the battery can be charged by different quick-charging flattening platforms in a compatible manner with small change, a DC/DC booster is not required to be arranged, the quick-charging efficiency is improved, and the charging cost is reduced.

Description

Power battery charging system
Technical Field
The invention relates to the technical field of battery charging, in particular to a power battery charging system.
Background
With the enhancement of environmental awareness, new energy automobiles enter a developed 'fast traffic lane' and are accepted and accepted by more and more consumers. As a core part of a new energy automobile, the problem of quick charge of a power battery system is always a key point and a pain point of attention of consumers, and how to improve the quick charge time of the battery is also a problem which is solved by various enterprises. Under the condition of the same charge quantity, the higher the charging power is, the faster the charging speed is; in order to increase the charging power, the system voltage of the power battery is preferably increased, so that more and more enterprises have developed high-voltage platform batteries.
However, the mainstream fills electric pile soon in current market and is low-voltage platform configuration, because voltage platform mismatch, if use high-voltage battery unable direct charging, need establish high-voltage platform alone and fill electric pile and carry out the adaptation, perhaps carry on DC/DC booster in whole car and carry out and boost the back and fill soon, have charging inconvenience, increase in cost, efficiency reduction scheduling problem.
Disclosure of Invention
In view of the above, the invention provides a power battery charging system, which can realize the charging of batteries compatible with different quick charging flattening platforms through electric framework adjustment with small modification, does not need to arrange a DC/DC booster, improves the quick charging efficiency and reduces the charging cost.
The invention provides a power battery charging system which comprises a first power battery, a second power battery, a main positive relay, a main negative relay, a first quick charging relay, a second quick charging relay, a third quick charging relay, a fourth quick charging relay, a pre-charging resistor, a positive interface and a negative interface, wherein one end of the positive interface, the first quick charging relay, the pre-charging resistor, the first power battery, the third quick charging relay, the second power battery, the main negative relay and the negative interface are sequentially connected in series, one end of the main positive relay is connected between the pre-charging resistor and the first power battery, the other end of the main positive relay is connected between the first quick charging relay and the pre-charging relay and between the main negative relay and the negative interface, one end of the fourth quick charging relay is connected between the second power battery and the main negative relay, the other end of the fourth quick charging relay is connected between the first power battery and the third power relay, the other end of the fourth quick charging relay is connected between the first power relay and the second power relay and the third power relay, and the other end of the fourth quick charging relay is connected between the first power relay and the first power relay.
Further, the first power battery, the second power battery, the main positive relay, the main negative relay, the first quick charging relay, the second quick charging relay, the third quick charging relay, the fourth quick charging relay, the pre-charging resistor, the positive interface and the negative interface are all connected through copper bars.
Further, the positive interface and the negative interface are both connected with the charging pile.
Further, the power system comprises a high-pressure quick-charging loop, a low-pressure quick-charging loop, a pre-charging loop and a slow-charging loop, wherein the low-pressure quick-charging loop comprises a first low-pressure quick-charging loop and a second low-pressure quick-charging loop.
Further, the high-voltage quick charging loop comprises the positive interface, the first quick charging relay, the main positive relay, the first power battery, the third quick charging relay, the main negative relay and the negative interface, the first quick charging relay, the main positive relay, the third quick charging relay and the main negative relay are all closed, and the positive interface and the negative interface are connected with a high-voltage platform charging pile.
Further, the first low-voltage fast charging loop comprises the positive interface, the first fast charging relay, the main positive relay, the first power battery, the fourth fast charging relay, the main negative relay and the negative interface, the first fast charging relay, the main positive relay, the fourth fast charging relay and the main negative relay are all closed, and the positive interface and the negative interface are connected with a charging pile of the low-voltage platform.
Further, the second low-voltage quick charging loop comprises the positive interface, the second quick charging relay, the second power battery, the main negative relay and the negative interface, the second quick charging relay and the main negative relay are all closed, and the positive interface and the negative interface are connected with a low-voltage platform charging pile.
Further, the pre-charging loop comprises the positive interface, the pre-charging relay, the pre-charging resistor, the first power battery, the third quick-charging relay, the second power battery, the main negative relay and the negative interface, the pre-charging relay, the third quick-charging relay and the main negative relay are all closed, and the positive interface and the negative interface are connected with a high-voltage platform charging pile.
Further, the slow charging loop comprises the positive interface, the main positive relay, the first power battery, the third fast charging relay, the second power battery, the main negative relay and the negative interface, wherein the main positive relay, the third fast charging relay and the main negative relay are all closed, and the positive interface and the negative interface are connected with a high-voltage platform charging pile.
Further, the high-voltage power supply further comprises a high-voltage accessory, one end of the high-voltage accessory is connected between the main negative relay and the negative interface, the other end of the high-voltage accessory is connected with the other end of the main positive relay, and the high-voltage accessory comprises a voltage converter, an electric drive controller and a heater which are mutually connected in parallel.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the power battery charging system provided by the invention, through adjustment of an electrical framework, the driving of each relay is reasonably controlled, so that the battery can be charged by different quick charging flattening platforms in a compatible manner with small change, a DC/DC booster is omitted, the quick charging efficiency of the whole vehicle is improved, and the charging cost is reduced; when the low-voltage platform charging pile is used for charging, the whole high-voltage power battery pack is divided into two battery packs with equal voltage, the series connection is changed into the parallel connection, the two parallel battery packs can be charged and controlled to be on-off independently, when the battery charging of a single loop reaches a cut-off condition, the relay can be independently controlled to disconnect the loop, the other loop is not influenced, so that more battery cells can meet the charging cut-off condition as much as possible when the battery consistency is managed in the charging stage, the battery consistency management difficulty is reduced, and the driving experience of the whole vehicle is improved.
Drawings
Fig. 1 is a schematic diagram of a power battery charging system according to the present invention.
Wherein: 11-a first power cell; 12-a second power cell; 21-a main positive relay; 22-main negative relay; 31-a first fast charge relay; 32-a second fast charge relay; 33-a third fast charge relay; 34-fourth fast charge relay; 41-pre-charging relay; 42-pre-charging the resistor; 51-positive interface; 52-negative interface; 60-high voltage accessory; a 61-voltage converter; 62-an electric drive controller; 63-heater.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the orientation or positional relationship indicated in the present description is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1, the power battery charging system provided by the invention comprises a first power battery 11, a second power battery 12, a main positive relay 21, a main negative relay 22, a first quick charging relay 31, a second quick charging relay 32, a third quick charging relay 33, a fourth quick charging relay 34, a pre-charging relay 41, a pre-charging resistor 42, a positive interface 51, a negative interface 52 and a high-voltage accessory 60, wherein the positive interface 51, the first quick charging relay 31, the pre-charging relay 41, the pre-charging resistor 42, the first power battery 11, the third quick charging relay 33, the second power battery 12, the main negative relay 22 and the negative interface 52 are sequentially connected in series, one end of the main positive relay 21 is connected between the pre-charging resistor 42 and the first power battery 11, the other end of the main positive relay 41 is connected between the first quick charging relay 31 and the pre-charging relay 41 and between the main negative relay 22 and the negative interface 52, one end of the fourth quick charging relay 34 is connected between the second power battery 12 and the main negative relay 22, the other end of the main positive relay 33 is connected between the first power relay 33 and the main negative relay 12 and the main negative relay 52, and the other end of the main relay 33 is connected between the first power relay 33 and the main negative relay 32 and the other end of the main relay 12 and the main relay 12 is connected between the main positive relay 12 and the other end of the main relay 32.
Specifically, the first power battery 11, the second power battery 12, the main positive relay 21, the main negative relay 22, the first quick charge relay 31, the second quick charge relay 32, the third quick charge relay 33, the fourth quick charge relay 34, the precharge relay 41, the precharge resistor 42, the positive interface 51, and the negative interface 52 are all connected by copper bars. Both the positive interface 51 and the negative interface 52 are connected with the charging pile.
Specifically, the high-voltage accessory 60 includes a voltage converter 61, an electric drive controller 62, and a heater 63, and the voltage converter 61, the electric drive controller 62, and the heater 63 are connected in parallel with each other.
Further, the power battery charging system provided by the invention can realize four functions of high-pressure quick charging, low-pressure quick charging, pre-charging and slow charging, wherein the high-pressure quick charging is realized through a high-pressure quick charging loop, the low-pressure quick charging is realized through a low-pressure quick charging loop, the pre-charging is realized through a pre-charging loop, and the slow charging is realized through a slow charging loop.
Specifically, the high-voltage fast charging circuit includes a positive interface 51, a first fast charging relay 31, a main positive relay 21, a first power battery 11, a third fast charging relay 33, a second power battery 12, a main negative relay 22 and a negative interface 52, which are connected by copper bars, and at this time, the main positive relay 21, the first fast charging relay 31, the main negative relay 22 and the third fast charging relay 33 are all closed, and the positive interface 51 and the negative interface 52 are directly connected with a charging pile of the high-voltage platform, so that the first power battery 11 and the second power battery 12 can be charged simultaneously.
Specifically, there are 2 low-voltage fast charging circuits, the first power battery 11 and the second power battery 12 are separately charged, the circuit for charging the first power battery 11 includes a positive interface 51, a first fast charging relay 31, a main positive relay 21, the first power battery 11, a fourth fast charging relay 34, a main negative relay 22 and a negative interface 52 which are connected by copper bars, at this time, the first fast charging relay 31, the main positive relay 21, the fourth fast charging relay 34 and the main negative relay 22 are all closed, and the positive interface 51 and the negative interface 52 are connected with a low-voltage table charging pile; the circuit for charging the second power battery 12 comprises a positive interface 51, a second fast charging relay 32, the second power battery 12, a main negative relay 22 and a negative interface 52 which are connected through copper bars, wherein the second fast charging relay 32 and the main negative relay 22 are both closed at the moment, and the positive interface 51 and the negative interface 52 are connected with a low-voltage platform charging pile.
Specifically, the pre-charging circuit includes a positive interface 51, a pre-charging resistor 42, a pre-charging relay 41, a first power battery 11, a third fast charging relay 33, a second power battery 12, a main negative relay 22 and a negative interface 52, and at this time, the pre-charging relay 41, the third fast charging relay 33 and the main negative relay 22 are all closed, and the positive interface 51 and the negative interface 52 are connected with a high-voltage platform charging pile.
Specifically, the slow charging circuit includes a positive interface 51, a main positive relay 21, a first power battery 11, a third fast charging relay 33, a second power battery, a main negative relay 22, and a negative interface 52, where the main positive relay 21, the third fast charging relay 33, and the main negative relay 22 are all closed, and the positive interface 51 and the negative interface 52 are connected with a high-voltage platform charging pile.
It should be noted that, the main positive relay 21, the main negative relay 22, the first fast charging relay 31, the second fast charging relay 32, the third fast charging relay 33, and the fourth fast charging relay 34 in the high-voltage fast charging circuit and the low-voltage fast charging circuit all perform technical parameter matching selection based on requirements such as power battery system fast charging rate performance, duration time, and the like. The pre-charging resistor 42 in the pre-charging loop needs to input parameters such as specific pre-charging resistance value and power according to the voltage of the power battery, the high-voltage bus capacitor, the pre-charging time of the whole vehicle and the like, and performs matching type selection based on the calculated parameters. After the pre-charging relay 41 finishes the type selection, the pre-charging circuit current and the duration are evaluated and calculated, and the pre-charging relay 41 finishes the type selection according to the current and the duration requirements.
As can be seen from the above description, the power battery charging system provided by the invention reasonably controls the driving of each relay through the adjustment of the electrical architecture, realizes the charging of batteries compatible with different quick charging flattening platforms with smaller modification, cancels the DC/DC booster, improves the quick charging efficiency of the whole vehicle, and reduces the charging cost; when the low-voltage platform charging pile is used for charging, the whole high-voltage power battery pack is divided into two battery packs with equal voltage, the series connection is changed into the parallel connection, the two parallel battery packs can be charged and controlled to be on-off independently, when the battery charging of a single loop reaches a cut-off condition, the relay can be independently controlled to disconnect the loop, the other loop is not influenced, so that more battery cells can meet the charging cut-off condition as much as possible when the battery consistency is managed in the charging stage, the battery consistency management difficulty is reduced, and the driving experience of the whole vehicle is improved.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A power battery charging system, which is characterized by comprising a first power battery (11), a second power battery (12), a main positive relay (21), a main negative relay (22), a first quick charging relay (31), a second quick charging relay (32), a third quick charging relay (33), a fourth quick charging relay (34), a pre-charging relay (41), a pre-charging resistor (42), a positive interface (51) and a negative interface (52), wherein the positive interface (51), the first quick charging relay (31), the pre-charging relay (41), the pre-charging resistor (42), the first power battery (11), the third quick charging relay (33), the second power battery (12), the main negative relay (22) and the negative interface (52) are sequentially connected in series, one end of the main positive relay (21) is connected between the pre-charging resistor (42) and the first power battery (11), the other end is connected between the first quick charging relay (31) and the pre-charging relay (22) and the negative interface (52) is connected between the main relay (22) and the main negative relay (22), the other end is connected between the first power battery (11) and the third quick charge relay (33), one end of the second quick charge relay (32) is connected between the third quick charge relay (33) and the second power battery (12), and the other end is connected between the positive interface (51) and the first quick charge relay (31).
2. The power battery charging system according to claim 1, wherein the first power battery (11), the second power battery (12), the main positive relay (21), the main negative relay (22), the first fast charging relay (31), the second fast charging relay (32), the third fast charging relay (33), the fourth fast charging relay (34), the pre-charging relay (41), the pre-charging resistor (42), the positive interface (51) and the negative interface (52) are all connected by copper bars.
3. The power battery charging system according to claim 2, wherein the positive interface (51) and the negative interface (52) are both connected with a charging post.
4. The power battery charging system of claim 1, wherein the power system comprises a high-pressure fast charge circuit, a low-pressure fast charge circuit, a pre-charge circuit, a slow charge circuit, the low-pressure fast charge circuit comprising a first low-pressure fast charge circuit and a second low-pressure fast charge circuit.
5. The power battery charging system of claim 4, wherein the high-voltage fast-charging circuit comprises the positive interface (51), the first fast-charging relay (31), the main positive relay (21), the first power battery (11), the third fast-charging relay (33), the main negative relay (22) and the negative interface (52), wherein the first fast-charging relay (31), the main positive relay (21), the third fast-charging relay (33) and the main negative relay (22) are all closed, and the positive interface (51) and the negative interface (52) are connected with a high-voltage stage charging pile.
6. The power battery charging system of claim 4, wherein the first low-voltage fast-charge loop comprises the positive interface (51), the first fast-charge relay (31), the main positive relay (21), the first power battery (11), the fourth fast-charge relay (34), the main negative relay (22) and the negative interface (52), wherein the first fast-charge relay (31), the main positive relay (21), the fourth fast-charge relay (34) and the main negative relay (22) are all closed, and wherein the positive interface (51) and the negative interface (52) are connected with a low-voltage platen charging stake.
7. The power battery charging system of claim 4, wherein the second low-voltage fast-charge circuit comprises the positive interface (51), the second fast-charge relay (32), the second power battery (12), the main negative relay (22) and the negative interface (52), wherein the second fast-charge relay (32) and the main negative relay (22) are both closed, and wherein the positive interface (51) and the negative interface (52) are connected with a low-platform charging pile.
8. The power battery charging system of claim 4, wherein the pre-charge circuit comprises the positive interface (51), the pre-charge relay (41), the pre-charge resistor (42), the first power battery (11), the third fast charge relay (33), the second power battery (12), the main negative relay (22) and the negative interface (52), wherein the pre-charge relay (41), the third fast charge relay (33) and the main negative relay (22) are all closed, and wherein the positive interface (51) and the negative interface (52) are connected with a high-voltage platform charging stake.
9. The power battery charging system of claim 4, wherein the slow charge circuit comprises the positive interface (51), the main positive relay (21), the first power battery (11), the third fast charge relay (33), the second power battery (12), the main negative relay (22) and the negative interface (52), wherein the main positive relay (21), the third fast charge relay (33) and the main negative relay (22) are all closed, and wherein the positive interface (51) and the negative interface (52) are connected with a high-voltage platform charging stake.
10. The power battery charging system according to claim 1, further comprising a high-voltage accessory (60), one end of the high-voltage accessory (60) being connected between the main negative relay (22) and the negative interface (52), the other end being connected with the other end of the main positive relay (21), the high-voltage accessory (60) comprising a voltage converter (61), an electric drive controller (62) and a heater (63) connected in parallel to each other.
CN202111301266.6A 2021-11-04 2021-11-04 Power battery charging system Pending CN116073464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111301266.6A CN116073464A (en) 2021-11-04 2021-11-04 Power battery charging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111301266.6A CN116073464A (en) 2021-11-04 2021-11-04 Power battery charging system

Publications (1)

Publication Number Publication Date
CN116073464A true CN116073464A (en) 2023-05-05

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ID=86177498

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111301266.6A Pending CN116073464A (en) 2021-11-04 2021-11-04 Power battery charging system

Country Status (1)

Country Link
CN (1) CN116073464A (en)

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