CN215681839U - Power battery charging circuit and vehicle thereof - Google Patents

Power battery charging circuit and vehicle thereof Download PDF

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Publication number
CN215681839U
CN215681839U CN202121236832.5U CN202121236832U CN215681839U CN 215681839 U CN215681839 U CN 215681839U CN 202121236832 U CN202121236832 U CN 202121236832U CN 215681839 U CN215681839 U CN 215681839U
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China
Prior art keywords
power battery
inverter
switch
connector
charging circuit
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CN202121236832.5U
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Chinese (zh)
Inventor
管晓磊
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Suzhou Huichuan United Power System Co Ltd
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Suzhou Huichuan United Power System Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model discloses a power battery charging circuit and a vehicle thereof, wherein the power battery charging circuit comprises: the power supply system comprises a power battery, an inverter and a motor, wherein a first switch unit is connected between the power battery and the inverter, the middle points of three-phase bridge arms of the inverter are respectively connected with three-phase coils of the motor, the power supply system also comprises a control module, the control module is used for receiving input voltage of an external power supply module, the positive electrode of the control module is connected between the middle point of any one phase of bridge arm of the three-phase bridge arms and the three-phase coils, and the negative electrode of the control module is connected with the negative electrode of the inverter. The technical scheme of the utility model can fully utilize the power device of the inverter, save the bypass contactor used for direct charging and carry out charging with low cost.

Description

Power battery charging circuit and vehicle thereof
Technical Field
The utility model relates to the technical field of motors, in particular to a power battery charging circuit and a vehicle thereof.
Background
With the rapid popularization of electric vehicles, the voltage of a power battery and the voltage of a charging pile have no unified standard, and the direct-current charging of the power battery is generally divided into direct charging and boosting charging. The direct charging means that the positive and negative electrodes of the charging pile are directly connected with the positive and negative buses of the power battery through a contactor or a relay to directly charge the battery, and a voltage boosting or reducing circuit is not arranged in the middle; the boosting charging is divided into boosting by using an independent boosting charging device or by using the matching of an inverter and a motor; and the charging technology needs to meet the requirements of different users, adaptability to different power batteries and different charging piles, and compatibility.
The prior art needs a plurality of bypass contactors to control an external power supply module to directly charge a power battery when being compatible with direct charging and boosting charging functions, and the real-time control efficiency is not high, so that the complexity, the volume and the cost of a system are increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power battery charging circuit, which aims to make full use of a power device of an inverter, save a bypass contactor used in direct charging and charge at low cost.
The above problems to be solved by the present invention are achieved by the following technical solutions:
a power battery charging circuit comprises a power battery, an inverter and a motor, wherein a first switch unit is connected between the power battery and the inverter, the middle points of three-phase bridge arms of the inverter are respectively connected with three-phase coils of the motor, the power battery charging circuit also comprises a control module, the control module is used for receiving input voltage of an external power supply module, the positive electrode of the control module is connected between the middle point of any one of the three-phase bridge arms and the three-phase coils, and the negative electrode of the control module is connected with the negative electrode of the inverter.
Preferably, the inverter further comprises a second switch unit, and the second switch unit controls the positive electrode of the control module and the inverter to be switched on and off.
Preferably, the inverter further includes a bus capacitor and a first connector, which are connected in parallel to any phase of the bridge arm, respectively, and the first connector is connected between the first switch unit and the bus capacitor.
Preferably, the first switch unit includes a first switch and a second switch, a first end of the first switch is connected to a positive electrode of the power battery, a second end of the first switch is connected to a positive electrode of the first connector, a first end of the second switch is connected to a negative electrode of the power battery, and a second end of the second switch is connected to a negative electrode of the inverter.
Preferably, the access point of the negative pole of the control module is located between the second end of the second switch and the negative pole of the first connector.
Preferably, the control module comprises a second connector, a positive electrode of the external power supply module is connected with a positive electrode of the second connector, and a negative electrode of the external power supply module is connected with a negative electrode of the second connector.
Preferably, the second switch unit is disposed at a positive electrode of the second connector, and the second switch unit controls on/off of the second connector and the inverter or the second connector and the three-phase coil.
Preferably, a circuit breaker is arranged between the positive pole of the second connector and the second switching unit.
Preferably, the second switch unit includes a third switch, a first end of the third switch is connected to the circuit breaker, and a second end of the third switch is connected between a midpoint of any one of the three-phase bridge arms and the three-phase coil.
Preferably, a vehicle comprises the power battery charging circuit.
Has the advantages that: according to the technical scheme, after the control module starts and controls the passage of the external power supply module and the inverter, the external power supply module provides direct current and positive voltage, the inverter is naturally conducted, meanwhile, the body in the inverter is controlled to be conducted, and current is converted in the inverter, so that most of current charges a power battery through the interior of the inverter; and the power device of the inverter can be fully utilized, and a bypass contactor used in direct charging is saved, so that the cost is reduced, and the power direct charging circuit with the reduced volume is obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic block diagram of a direct power charging system according to the present invention.
Fig. 2 is a schematic circuit diagram of a first embodiment of a direct power charging system according to the present invention.
Fig. 3 is a charging schematic diagram of a first embodiment of a direct power charging system according to the present invention.
Fig. 4 is a charging schematic diagram of a second embodiment of a direct power charging system according to the present invention.
Fig. 5 is a charging schematic diagram of a third embodiment of a direct power charging system according to the present invention.
Fig. 6 is a schematic structural diagram of a control unit of a direct power charging system according to the present invention.
The reference numbers illustrate: 1-an external power supply module; 2-a control module; 21-a second connector; 22-a circuit breaker; 23-a third switch; 5, a motor; 51-a first winding; 52-a second winding; 53-third winding; 6-an inverter; 61-a first connector; 62-a first leg; 621-a first control unit; 622-third control unit; 623-a fifth control unit; 63-a second leg; 631-a second control unit; 632-a fourth control unit; 633-sixth control unit; 64-bus capacitance; 65-a third leg; 7-a power battery; 71-a first switch; 72-second switch.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a power battery charging circuit.
As shown in fig. 1 and 3, in an embodiment of the present invention, the power battery charging circuit includes: the motor comprises a power battery 7, an inverter 6 and a motor 5, wherein a first switch unit is connected between the power battery 7 and the inverter 6, and the middle points of three-phase bridge arms of the inverter 6 are respectively connected with three-phase coils of the motor 5.
The inverter is characterized by further comprising a control module 2, wherein the control module 2 is used for receiving input voltage of an external power supply module 1, the positive pole of the control module 2 is connected between the midpoint of any one phase of the three-phase bridge arm and the three-phase coil, and the negative pole of the control module 2 is connected with the negative pole of the inverter 6.
When the external power supply module 1 is in a charging state and the voltage output by the external power supply module 1 is lower than the voltage of the power battery 7, the control module 2 operates to enable the external power supply module 1 to provide direct current and positive voltage, the inverter is controlled to be conducted, and current is converted inside the inverter, so that most of current is charged to the power battery 7 through the inverter body.
According to the technical scheme, after the control module starts and controls the passage of the external power supply module and the inverter, the external power supply module provides direct current and positive voltage, the inverter is naturally conducted, meanwhile, the body in the inverter is controlled to be conducted, and current is converted in the inverter, so that most of current charges a power battery through the interior of the inverter; and the power device of the inverter can be fully utilized, and a bypass contactor used in direct charging is saved, so that the cost is reduced, and the power direct charging circuit with the reduced volume is obtained.
Specifically, as shown in fig. 2, the power supply further includes a second switch unit, and the second switch unit controls on and off of the positive electrode of the control module 2 and the inverter 6.
Specifically, as shown in fig. 2, the inverter 6 further includes a bus capacitor 64 and a first connector 21 connected in parallel to each of the phase arms, and the first connector 21 is connected between the first switching unit and the bus capacitor 64.
Specifically, as shown in fig. 2, the first switch unit includes a first switch 71 and a second switch 72, a first end of the first switch 71 is connected to a positive electrode of the power battery 7, a second end is connected to a positive electrode of the first connector 21, a first end of the second switch 72 is connected to a negative electrode of the power battery 7, and a second end is connected to a negative electrode of the inverter 6. The starting and stopping of the charging process of the power battery are controlled in real time through the first switch, so that the charging order is guaranteed, and abnormal current input caused by the fault of a certain component when charging is carried out can be prevented; the second switch can effectively prevent the power battery from causing bad faults in the charging process in real time, and the influence on other parts of the charging circuit is avoided; and then the charging stability of the power battery and the charging circuit is improved, and the safety is improved.
The bus capacitor 64 can absorb the current of the power tube in the charging state, so as to prevent the power tube from being damaged, and further prolong the service life of the inverter. The first connector 61 has a first input terminal electrically connected to the first output terminal, a second input terminal electrically connected to the second output terminal, a first output terminal connected to the second terminal of the first switch 71, a second input terminal connected to the second terminal of the second switch 72, a second output terminal connected to the other terminal of the first leg 62 of the inverter 6, and a third input terminal connected to the second terminal of the first leg 62 of the inverter 6. Wherein, the first connector 61 is preferably a power connector with model number JDS-07B T/Z; the battery is ensured to have good dynamic contact reliability; the waterproof treatment of the plug and the socket ensures the safety and reliability after the plug and the socket are plugged.
Wherein the access point of the negative pole of the control module 2 is located between the second end of the second switch 72 and the negative pole of the first connector 21.
Specifically, the control module 2 includes a second connector 61, a positive electrode of the external power supply module 1 is connected to a positive electrode of the second connector 61, and a negative electrode of the external power supply module 1 is connected to a negative electrode of the second connector 61.
Specifically, the second switching unit is disposed at the positive electrode of the second connector 61, and the second switching unit controls on/off of the second connector 61 and the inverter 6 or the second connector 61 and the three-phase coil.
Specifically, a circuit breaker 22 is arranged between the positive pole of the second connector 61 and the second switching unit. In the embodiment, the circuit breaker 22 is preferably a plug-in circuit breaker, the circuit breaker 22 is connected in series in the circuit by using a metal conductor as a melt, and when an overload or short-circuit current passes through the melt, the melt is fused due to self heating, so that a charging circuit is disconnected; the protection to the charging circuit is improved, and the safety performance is further improved.
The inverter 6 converts direct current (which may be a battery or a storage battery) into alternating current (which is generally a 220v, 50Hz sine or square wave). Conventionally, an inverter is a device that converts direct current into alternating current. When the inverter carries out direct current exchange, the voltage conversion circuit is formed by the MOS control unit and the energy storage inductor, and input pulses are amplified by the push-pull amplifier and then drive the MOS tube to carry out switching action, so that direct current voltage charges and discharges the inductor, and the other end of the inductor can obtain alternating current voltage.
Specifically, as shown in fig. 2; the inverter comprises a first bridge arm 62, a second bridge arm 63 and a third bridge arm 65, wherein the first bridge arm 62, the second bridge arm 63 and the third bridge arm 65 are connected in parallel; and at least one control unit is arranged on each of the first bridge arm 62, the second bridge arm 63 and the third bridge arm 65. As shown in fig. 6, the control unit may be a power transistor, the power transistor may be an MOS transistor, and the MOS transistor includes a body diode, and the body diode may be an equivalent body diode or an additional body diode.
Specifically, the second switch unit includes a third switch 23, a first end of the third switch 23 is connected to the circuit breaker, and a second end of the third switch 23 is connected between a midpoint of any one of the three-phase arms and the corresponding three-phase coil. The third switch 23 is configured to control at least one control unit of the three-phase bridge arm to be turned on or off, so that the inverter 6 converts the dc supply voltage into an ac voltage.
As shown in fig. 2, the first bridge arm 62 includes a first control unit 621 and a second control unit 631, the first control unit 621 and the second control unit 631 are connected in series, and a common end of the first control unit 621 and the second control unit 631 is connected to the first winding 51 of the motor 5;
the second leg 63 comprises a third control unit 622 and a fourth control unit 632, the third control unit 622 and the fourth control unit 632 are connected in series, and a common end of the third control unit 622 and the fourth control unit 632 is connected to the second winding 52 of the motor 5;
the third leg 65 comprises a fifth control unit 623 and a sixth control unit 633, the fifth control unit 623 and the sixth control unit 633 are connected in series, and a common terminal of the fifth control unit 623 and the sixth control unit 633 is connected to the third winding 53 of the motor 5. In the present embodiment, a three-phase motor is preferably used as the motor 5.
As shown in fig. 2 and 3, the positive electrode of the external power supply module 1 is connected to the first control unit 621 and the second control unit 631, and specifically, the positive electrode of the external power supply module 1 is connected to the midpoint of the first arm, and specifically, one end of the midpoint of the first arm is connected to the first winding 51 in the three-phase coil, and the positive electrode of the external power supply module 1 is connected between the midpoint of the three-phase arm and the first winding 51, and when the voltage of the external power supply module is higher than the voltage of the power battery, the external power supply module performs charging, and at this time, after the third switch 23 is controlled to be closed, the output current of the external power supply module is transmitted to the first arm through the second connector and the circuit breaker; at this time, the third control unit 622, the fourth control unit 632, the sixth control unit 633, the fifth control unit 623 and the second control unit 631 are turned off, and the first control unit 621 is turned on; the current flows through the body diode of the first control unit 621 to conduct naturally, the body diode charges the battery, and meanwhile, the first control unit 621 is controlled to conduct, the current is switched between the body diode of the first control unit 621 and the first control unit 621, and most of the current charges the power battery 7 through the first control unit 621 and the first connector 61.
Or the positive electrode of the external power supply module 1 is connected to the third control unit 622 and the fourth control unit 632, as shown in fig. 4, the positive electrode of the external power supply module 1 is connected to the midpoint of the second arm; specifically, one end of the midpoint of the second bridge arm is connected to a second winding 52 in the three-phase coil, the positive electrode of the external power supply module 1 is connected between the midpoint of the second bridge arm and the second winding 52, when the voltage of the external power supply module is higher than the voltage of the power battery, the external power supply module is charged, and after the third switch 23 is controlled to be closed, the output current of the external power supply module is transmitted to the third bridge arm through the second connector and the circuit breaker; at this time, the first control unit 621, the fourth control unit 632, the sixth control unit 633, the fifth control unit 623 and the second control unit 631 are turned off, and the third control unit 622 is turned on; the current flows through the body diode of the third control unit 622 to conduct naturally, the body diode charges the battery, meanwhile, the body of the third control unit 622 is controlled to conduct, the current is converted between the body diode of the third control unit 622 and the body of the third control unit 622, and most of the current charges the power battery 7 through the body of the third control unit 622 and the first connector 61;
or the positive electrode of the external power supply module 1 is connected to the fifth control unit 623 and the sixth control unit 633, as shown in fig. 5, the positive electrode of the external power supply module 1 is connected to the midpoint of the third arm; specifically, one end of the midpoint of the third bridge arm is connected to a third winding 53 in the three-phase coil, the positive electrode of the external power supply module 1 is connected between the midpoint of the third bridge arm and the third winding 53, when the voltage of the external power supply module is higher than the voltage of the power battery, the external power supply module is charged, and after the third switch 23 is controlled to be closed, the output current of the external power supply module is transmitted to the third bridge arm through the second connector and the circuit breaker; at this time, the first control unit 621, the fourth control unit 632, the sixth control unit 633, the third control unit 622, and the second control unit 631 are turned off, and the fifth control unit 623 is turned on; the current flows through the body diode of the fifth control unit 623, which is naturally conducted to charge the battery, and at the same time, the body of the fifth control unit 623 is controlled to be conducted, the current is switched between the body diode of the fifth control unit 623 and the body of the fifth control unit 623, and most of the current flows through the body of the fifth control unit 623 and the first connector 61 to charge the power battery 7.
As shown in fig. 2, in the first arm 62 composed of the first control unit 621 and the second control unit 631, one end of the first arm 62 is connected to the positive electrode of the power battery 7, and the other end of the first arm 62 is connected to the negative electrode of the power battery 7; in the second arm 63 composed of the third control unit 622 and the fourth control unit 632, one end of the second arm 63 is connected to the positive electrode of the power battery 7, and the other end of the second arm 63 is connected to the negative electrode of the power battery 7; and the third bridge arm 65 composed of the fifth control unit 623 and the sixth control unit 633, wherein one end of the third bridge arm 65 is connected with the positive electrode of the power battery 7, and the other end of the third bridge arm 65 is connected with the negative electrode of the power battery 7.
According to the technical scheme, after the control module starts and controls the external power supply module to pass through the channel of the inverter, the external power supply module provides direct current and positive voltage, the diode of the control unit is naturally conducted, meanwhile, the control unit body is controlled to be conducted, and the current is converted between the control unit body and the diode, so that most of the current charges the power battery through the control unit body; furthermore, power devices of the inverter can be fully utilized, a bypass contactor used in direct charging is saved, and charging is carried out at low cost; and the cost of the charging system is reduced and the size of the charging system is reduced.
The present invention further provides a vehicle, which includes a power battery charging circuit, and the specific structure of the power battery charging circuit refers to the above embodiments, and since the motor control system adopts all technical solutions of all the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not repeated herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A power battery charging circuit comprises a power battery, an inverter and a motor, wherein a first switch unit is connected between the power battery and the inverter, the middle points of three-phase bridge arms of the inverter are respectively connected with three-phase coils of the motor, the power battery charging circuit is characterized by further comprising a control module, the control module is used for receiving input voltage of an external power supply module, the positive electrode of the control module is connected between the middle point of any one of the three-phase bridge arms and the three-phase coils, and the negative electrode of the control module is connected to the negative electrode of the inverter.
2. The power battery charging circuit of claim 1, further comprising a second switching unit that controls the positive electrode of the control module and the inverter to be turned on and off.
3. The power battery charging circuit according to claim 2, wherein the inverter further comprises a bus capacitor and a first connector, which are connected in parallel with any phase of the bridge arm, respectively, and the first connector is connected between the first switching unit and the bus capacitor.
4. The power battery charging circuit of claim 3, wherein the first switch unit comprises a first switch and a second switch, a first end of the first switch is connected to a positive pole of the power battery, a second end of the first switch is connected to a positive pole of the first connector, a first end of the second switch is connected to a negative pole of the power battery, and a second end of the second switch is connected to a negative pole of the inverter.
5. The power battery charging circuit of claim 4, wherein an access point for the negative pole of the control module is located between the second end of the second switch and the negative pole of the first connector.
6. The power battery charging circuit of claim 2, wherein the control module includes a second connector, a positive terminal of the external power module being connected to a positive terminal of the second connector, and a negative terminal of the external power module being connected to a negative terminal of the second connector.
7. The power battery charging circuit according to claim 6, wherein the second switch unit is arranged at the positive electrode of the second connector, and the second switch unit controls the on/off of the second connector and the inverter or the second connector and the three-phase coil.
8. The power battery charging circuit of claim 7, wherein a circuit breaker is disposed between the positive pole of the second connector and the second switching unit.
9. The power battery charging circuit of claim 8, wherein the second switch unit comprises a third switch, a first end of the third switch is connected to the circuit breaker, and a second end of the third switch is connected between the midpoint of any one of the three-phase legs and the three-phase coil.
10. A vehicle characterized by comprising a power battery charging circuit according to any one of claims 1 to 9.
CN202121236832.5U 2021-06-03 2021-06-03 Power battery charging circuit and vehicle thereof Active CN215681839U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121236832.5U CN215681839U (en) 2021-06-03 2021-06-03 Power battery charging circuit and vehicle thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121236832.5U CN215681839U (en) 2021-06-03 2021-06-03 Power battery charging circuit and vehicle thereof

Publications (1)

Publication Number Publication Date
CN215681839U true CN215681839U (en) 2022-01-28

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Application Number Title Priority Date Filing Date
CN202121236832.5U Active CN215681839U (en) 2021-06-03 2021-06-03 Power battery charging circuit and vehicle thereof

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CN (1) CN215681839U (en)

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Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province

Patentee after: Suzhou Huichuan United Power System Co.,Ltd.

Address before: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province

Patentee before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd.

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