CN218702748U - Direct current boost charging circuit of power battery and electric vehicle - Google Patents

Direct current boost charging circuit of power battery and electric vehicle Download PDF

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Publication number
CN218702748U
CN218702748U CN202222763019.4U CN202222763019U CN218702748U CN 218702748 U CN218702748 U CN 218702748U CN 202222763019 U CN202222763019 U CN 202222763019U CN 218702748 U CN218702748 U CN 218702748U
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unit
output end
power battery
switch
direct current
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夏铸亮
张竞文
王敷玟
唐君华
王家绪
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GAC Aion New Energy Automobile Co Ltd
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GAC Aion New Energy Automobile 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 application relates to the technical field of battery charging, and provides a direct-current boost charging circuit of a power battery and an electric vehicle. The direct current boost charging circuit includes: the device comprises a commercial power rectifying unit, a high-frequency inversion rectifying unit, a supporting capacitor, a direct current charging interface, a first switch unit, a second switch unit and a power battery; the output end of the commercial power rectifying unit is connected with the input end of the high-frequency inversion rectifying unit, the supporting capacitor is connected between the commercial power rectifying unit and the high-frequency inversion rectifying unit, and the output end of the high-frequency inversion rectifying unit is connected with the power battery; the output end of the direct current charging interface is connected with the power battery, and a first switch unit is arranged between the output end of the direct current charging interface and the power battery; the output end of the direct current charging interface is connected with the output end of the commercial power rectification unit, and the second switch unit is arranged between the output end of the direct current charging interface and the output end of the commercial power rectification unit. The application can boost the output voltage of the direct current charging equipment lower than the voltage of the battery.

Description

Direct current boost charging circuit of power battery and electric vehicle
Technical Field
The application relates to the technical field of battery charging, in particular to a direct-current boosting charging circuit of a power battery and an electric vehicle.
Background
At present, the charging mode of the power battery of the electric vehicle mainly comprises an alternating current slow charging mode and a direct current fast charging mode. The alternating current slow charging is realized by connecting a vehicle-mounted charger to commercial power, and converting the commercial power into direct current matched with the voltage of a battery by using an alternating current charging circuit formed by the vehicle-mounted charger and then charging the power battery. The direct current quick charging is that the direct current charging equipment is connected to the direct current charging interface, and the direct current charging equipment directly supplies power to the power battery through the direct current charging circuit after converting the commercial power into direct current. And the direct current quick charging power is large, which is an important charging mode. However, when the direct current quick charging is carried out, the voltage which can be output by the direct current charging equipment is required to be not lower than the battery voltage of the power battery, otherwise, the direct current charging equipment cannot charge the battery. For example, when the battery voltage of the power battery is 800V and the maximum output voltage of the dc charging device is 500V, the power battery cannot be charged quickly by the dc charging device.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the technical problems occurring in the related art. Therefore, the application provides a direct current boost charging circuit of a power battery, which can boost the output voltage of direct current charging equipment lower than the voltage of the battery, so that the direct current charging equipment can rapidly charge the power battery.
The application also provides an electric vehicle.
According to the direct current boost charging circuit of power battery of the embodiment of first aspect of this application, include:
the vehicle-mounted charging device comprises a vehicle-mounted charger, a direct-current charging interface for connecting direct-current charging equipment, a first switch unit, a second switch unit and a power battery;
the vehicle-mounted charger comprises a mains supply rectifying unit, a high-frequency inversion rectifying unit and a support capacitor, wherein the input end of the mains supply rectifying unit is used for being connected with mains supply through an alternating current charging interface, the output end of the mains supply rectifying unit is connected with the input end of the high-frequency inversion rectifying unit, the support capacitor is connected between the mains supply rectifying unit and the high-frequency inversion rectifying unit, and the output end of the high-frequency inversion rectifying unit is connected with the power battery;
the output end of the direct-current charging interface is connected with the power battery, and the first switch unit is arranged between the output end of the direct-current charging interface and the power battery;
the output end of the direct current charging interface is connected to the output end of the commercial power rectification unit, and the second switch unit is arranged between the output end of the direct current charging interface and the output end of the commercial power rectification unit.
The output end of a commercial power rectifying unit of a vehicle-mounted charger is connected with the output end of a direct current charging interface, a first switch unit is arranged between the output end of the direct current charging interface and a power battery, and a second switch unit is arranged between the output end of the direct current charging interface and the output end of the commercial power rectifying unit, so that when the output voltage of direct current charging equipment is lower than the battery voltage of the power battery, the output voltage of the direct current charging equipment can be boosted to the battery voltage through a high-frequency inversion rectifying unit only by disconnecting the first switch unit and discharging outwards from the vehicle-mounted charger capable of discharging to charge a supporting capacitor, so that the voltage of the supporting capacitor reaches the preset input voltage of the direct current charging interface, and the second switch unit is closed, and the output voltage of the direct current charging equipment lower than the battery voltage can be boosted to the battery voltage through the high-frequency inversion rectifying unit, so that the direct current charging equipment can be used for rapidly charging the power battery without adding a special booster and only by adding a switch unit with a small specification.
According to an embodiment of the present application, the high frequency inverting rectifying unit includes a high frequency inverting sub-unit and a high frequency rectifying sub-unit;
the input end of the high-frequency inversion subunit is connected with the output end of the commercial power rectification unit, and the output end of the high-frequency inversion subunit is connected with the input end of the high-frequency rectification subunit;
and the output end of the high-frequency rectifier subunit is connected with the power battery.
According to one embodiment of the application, the high frequency inverting sub-unit comprises a DC/AC converter and the high frequency rectifying sub-unit comprises an AC/DC converter.
According to an embodiment of the present application, the second switching unit includes a first switch and a second switch;
one end of the first switch is connected with the anode of the direct current charging interface, and the other end of the first switch is connected with the output end of the commercial power rectification unit;
one end of the second switch is connected with the negative electrode of the direct current charging interface, and the other end of the second switch is connected with the output end of the commercial power rectification unit.
According to an embodiment of the application, at least one of the first switch and the second switch is a relay.
According to an embodiment of the present application, further comprising:
a pre-charging unit for charging the support capacitor;
the output end of the pre-charging unit is connected between the second switch unit and the commercial power rectification unit.
According to one embodiment of the application, the pre-charging unit comprises a DC/DC converter.
According to an embodiment of the present application, the precharge unit includes an isolated DC/DC converter.
According to an embodiment of the application, the mains rectification unit comprises an AC/DC converter.
According to the electric vehicle of the second aspect embodiment of the present application, the dc boost charging circuit of the power battery of any one of the above embodiments is included.
One or more technical solutions in the embodiments of the present application have at least one of the following technical effects:
the output end of a commercial power rectifying unit of a vehicle-mounted charger is connected with the output end of a direct current charging interface, a first switch unit is arranged between the output end of the direct current charging interface and a power battery, and a second switch unit is arranged between the output end of the direct current charging interface and the output end of the commercial power rectifying unit, so that when the output voltage of direct current charging equipment is lower than the battery voltage of the power battery, the output voltage of the direct current charging equipment can be boosted to the battery voltage through a high-frequency inversion rectifying unit only by disconnecting the first switch unit and discharging outwards from the vehicle-mounted charger capable of discharging to charge a supporting capacitor, so that the voltage of the supporting capacitor reaches the preset input voltage of the direct current charging interface, and the second switch unit is closed, and the output voltage of the direct current charging equipment lower than the battery voltage can be boosted to the battery voltage through the high-frequency inversion rectifying unit, so that the direct current charging equipment can be used for rapidly charging the power battery without adding a special booster and only by adding a switch unit with a small specification.
Drawings
In order to more clearly illustrate the technical solutions in the present application or prior art, the drawings used in the embodiments or the description of the prior art are briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a DC charging circuit for a power battery of the related art;
FIG. 2 is an AC slow charge and DC fast charge circuit for a vehicle according to the related art;
fig. 3 is a schematic structural diagram of a dc boost charging circuit of a power battery according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a dc boost charging circuit of a power battery according to yet another embodiment of the present disclosure.
Detailed Description
To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.
The dc boost charging circuit of the power battery provided in the embodiments of the present application will be described and explained in detail with several specific embodiments.
The charging mode of the power battery of the electric vehicle is mainly divided into an alternating current slow charging mode and a direct current fast charging mode. The alternating current slow charging is realized by connecting a vehicle-mounted charger to commercial power, and converting the commercial power into direct current matched with the voltage of a battery by using an alternating current charging circuit formed by the vehicle-mounted charger and then charging the power battery. The direct current quick charging is that the direct current charging equipment is connected to the direct current charging interface, and the direct current charging equipment directly supplies power to the power battery through the direct current charging circuit after converting the commercial power into direct current. In general, dc fast charging is an important charging method because of its large power and short charging time. However, if the voltage that the dc charging device can output is lower than the voltage of the battery of the electric vehicle, the dc charging device cannot charge the battery. For example, the battery voltage of an electric vehicle generally using a high-voltage power battery pack is generally about 800V, while the nominal maximum output voltage of an old dc charging device is 500V, and at this time, the power battery cannot be charged quickly by the dc charging device. For this reason, in the related art, the voltage is boosted by using a dedicated boost converter such as a DC/DC booster. As shown in fig. 1, a dedicated boost converter 100 is connected between dc charging interface 2 and power battery 5, so that when dc charging interface 2 is connected to dc charging device 200, the output voltage of dc charging device 200 can be boosted by boost converter 100, so that the output voltage of dc charging device 200 reaches the battery voltage of the power battery. However, adding a dedicated boost converter increases the overall cost of the electric vehicle, and in practical applications, the number of dc charging devices with output voltages lower than the battery voltage is small, so the cost performance of adding a dedicated boost converter is low.
Considering that in practical application, an ac slow charging and dc fast charging circuit of a vehicle is generally shown in fig. 2, and includes a vehicle-mounted charger 1, a dc charging interface 2 and a power battery 5, where the vehicle-mounted charger 1 can access commercial power through the ac charging interface 300 and convert the commercial power into dc power to charge the power battery 5, and the dc charging interface 2 can directly access a dc charging device to charge the power battery 5, and therefore, in an embodiment, as shown in fig. 3, a dc boost charging circuit of a power battery is provided, which includes:
the device comprises a vehicle-mounted charger 1, a direct-current charging interface 2 for connecting direct-current charging equipment, a first switch unit 3, a second switch unit 4 and a power battery 5;
the vehicle-mounted charger 1 comprises a commercial power rectifying unit 11, a high-frequency inversion rectifying unit and a supporting capacitor C OBC The input end of the commercial power rectifying unit 11 is used for being connected with commercial power through the alternating current charging interface 300, the output end of the commercial power rectifying unit 11 is connected with the input end of the high-frequency inversion rectifying unit, and the support capacitor C OBC The high-frequency inversion rectifying unit is connected between the commercial power rectifying unit 11 and the high-frequency inversion rectifying unit, and the output end of the high-frequency inversion rectifying unit is connected with the power battery 5;
the output end of the direct-current charging interface 2 is connected with the power battery 5, and the first switch unit 3 is arranged between the output end of the direct-current charging interface 2 and the power battery 5;
the output end of the direct current charging interface 2 is connected to the output end of the commercial power rectifying unit 11, and the second switch unit 4 is arranged between the output end of the direct current charging interface 2 and the output end of the commercial power rectifying unit 11.
In an embodiment, the mains rectification unit 11 is used for rectifying mainsThe commercial power voltage received from the alternating current charging interface is rectified into direct current and subjected to power factor compensation, and the direct current is output to be about 500V. The high-frequency inversion rectifying unit is used for realizing isolated direct current-to-direct current conversion, converting the voltage output by the commercial power rectifying unit 11 into voltage matched with the power battery 5 and realizing electrical isolation between commercial power and the power battery 5. A supporting capacitor C is arranged between the commercial power rectifying unit 11 and the high-frequency inversion rectifying unit OBC 。
In order to better realize the electrical isolation between the commercial power and the power battery, in an embodiment, as shown in fig. 3, the high-frequency inverting and rectifying unit further includes a high-frequency inverting subunit 21 and a high-frequency rectifying subunit 22;
the input end of the high-frequency inversion subunit 21 is connected with the output end of the commercial power rectification unit 11, and the output end of the high-frequency inversion subunit 21 is connected with the input end of the high-frequency rectification subunit 22;
the output end of the high-frequency rectifier subunit 22 is connected with the power battery 5.
In an embodiment, the mains rectification unit 11 comprises an AC/DC converter, the high frequency inverting subunit 21 comprises a DC/AC converter and the high frequency rectifying subunit comprises an AC/DC converter. Since the vehicle-mounted charger 1 can usually discharge to the outside, that is, the commercial power rectifying unit 11, the high-frequency inverter subunit 21 and the high-frequency rectifier subunit 22 are all bidirectional, the supporting capacitor C can be supported by converting the commercial power rectifying unit 11, the high-frequency inverter subunit 21 and the high-frequency rectifier subunit 22 at this time OBC And charging is carried out.
In an embodiment, as shown in fig. 3, the first switching unit 3 comprises a switch K FastCharge The switch K FastCharge May be a relay. Switch K FastCharge Is connected with the positive pole of the DC charging interface 2, and a switch K FastCharge The other end of the anode is connected with the anode of the power battery 5; and the negative electrode of the direct current charging interface 2 is connected with the negative electrode of the power battery 5.
In an embodiment, as shown in fig. 3, the second switch unit may include a first switch K1 and a second switch K2, one end of the first switch K1 is connected to the positive electrode of the dc charging interface 2, and the other end of the first switch K1 is connected to the output end of the commercial power rectification unit 11. One end of the second switch K2 is connected with the negative electrode of the dc charging interface 2, and the other end of the second switch K2 is connected with the output end of the commercial power rectification unit 11. Wherein, the first switch K1 and the second switch K2 may be relays.
When the dc charging device is connected to the dc charging interface 2, if the output voltage of the dc charging device is lower than the battery voltage of the power battery 5, the first switch unit 3 may be turned off first. Since the vehicle-mounted charger 1 is usually a vehicle-mounted charger capable of discharging outwards, the power battery can support the capacitor C through the vehicle-mounted charger 1 OBC Charging is carried out to make the supporting capacitor C OBC The voltage of the supporting capacitor reaches the preset input voltage of the direct-current charging interface, so that the voltage of the supporting capacitor reaches the preset input voltage of the direct-current charging interface, and therefore when the second switch group is closed, the voltage difference between the two ends of the second switch group cannot be too large, and the second switch is prevented from being burnt due to the fact that too large voltage difference exists between the two ends of the second switch group when the second switch group is closed. At the support capacitor C OBC After the voltage of the direct current charging interface reaches the preset input voltage of the direct current charging interface, the second switch unit 4 can be closed, so that the output voltage of the direct current charging equipment can be increased to the battery voltage, a charging loop from the direct current charging equipment to a high-frequency inversion rectifying unit of the vehicle-mounted charger 1 and then to the power battery 5 is formed to charge the power battery 5, and when the output voltage of the direct current charging equipment is lower than the battery voltage, the direct current charging equipment can rapidly charge the power battery.
The output end of a commercial power rectifying unit of the vehicle-mounted charger is connected with the output end of a direct current charging interface, a first switch unit is arranged between the output end of the direct current charging interface and a power battery, and a second switch unit is arranged between the output end of the direct current charging interface and the output end of the commercial power rectifying unit, so that when the output voltage of the direct current charging equipment is lower than the battery voltage of the power battery, the output voltage of the direct current charging equipment can be boosted to the battery voltage through the high-frequency inversion rectifying unit only by disconnecting the first switch unit and discharging outwards from the vehicle-mounted charger capable of discharging to charge the supporting capacitor, so that the voltage of the supporting capacitor reaches the preset input voltage of the direct current charging interface, and the second switch unit is closed, and the output voltage of the direct current charging equipment lower than the battery voltage can be boosted to the battery voltage through the high-frequency inversion rectifying unit of the direct current charging equipment to the vehicle-mounted charger and then to charge the power battery without adding a special booster.
Considering that part of the onboard charger may not be able to discharge to the outside, in an embodiment, as shown in fig. 4, the method further includes:
for supporting capacitor C OBC A precharge unit 6 for charging;
the output end of the pre-charging unit 6 is connected between the second switch unit 4 and the commercial power rectification unit 11.
Specifically, a first end of the pre-charging unit 6 is connected to one end of the first switch K1 connected to the output end of the commercial power rectification unit 11, and a second end of the pre-charging unit 6 is connected to one end of the second switch K2 connected to the output end of the commercial power rectification unit 11. Thus, the pre-charging unit 6 can be the supporting capacitor C OBC Charging is carried out to make the supporting capacitor C OBC Reaches the battery voltage Uo of the power battery. The power required by the pre-charging unit 6 is very small, for example, only about 5W of power is required, and power can be selectively supplied from the lead-acid storage battery, so that the cost of the pre-charging unit 6 is not high. Specifically, the pre-charging unit 6 may be an isolated DC/DC converter.
The support capacitor is precharged by the access precharge unit, so that the voltage of the support capacitor reaches the preset input voltage of the direct-current charging interface, and thus, the differential pressure at two ends of the second switch group can not be too large when the second switch group is closed, thereby avoiding the second switch from being burnt due to the fact that too large differential pressure exists at two ends of the second switch group when the second switch group is closed.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. A DC boost charging circuit for a power battery, comprising:
the vehicle-mounted charging device comprises a vehicle-mounted charger, a direct-current charging interface for connecting direct-current charging equipment, a first switch unit, a second switch unit and a power battery;
the vehicle-mounted charger comprises a mains supply rectifying unit, a high-frequency inversion rectifying unit and a supporting capacitor, wherein the input end of the mains supply rectifying unit is used for being connected with mains supply through an alternating current charging interface, the output end of the mains supply rectifying unit is connected with the input end of the high-frequency inversion rectifying unit, the supporting capacitor is connected between the mains supply rectifying unit and the high-frequency inversion rectifying unit, and the output end of the high-frequency inversion rectifying unit is connected with the power battery;
the output end of the direct-current charging interface is connected with the power battery, and the first switch unit is arranged between the output end of the direct-current charging interface and the power battery;
the output end of the direct current charging interface is connected to the output end of the commercial power rectification unit, and the second switch unit is arranged between the output end of the direct current charging interface and the output end of the commercial power rectification unit.
2. The direct-current boost charging circuit of the power battery according to claim 1, wherein the high-frequency inversion rectifying unit comprises a high-frequency inversion sub-unit and a high-frequency rectifying sub-unit;
the input end of the high-frequency inversion subunit is connected with the output end of the commercial power rectification unit, and the output end of the high-frequency inversion subunit is connected with the input end of the high-frequency rectification subunit;
and the output end of the high-frequency rectifier subunit is connected with the power battery.
3. The DC boost charging circuit of power battery as claimed in claim 2, wherein the high frequency inverting sub-unit comprises a DC/AC converter and the high frequency rectifying sub-unit comprises an AC/DC converter.
4. The direct-current boost charging circuit of the power battery according to claim 1, characterized in that the second switching unit comprises a first switch and a second switch;
one end of the first switch is connected with the anode of the direct current charging interface, and the other end of the first switch is connected with the output end of the commercial power rectification unit;
one end of the second switch is connected with the negative electrode of the direct current charging interface, and the other end of the second switch is connected with the output end of the commercial power rectification unit.
5. The DC boost charging circuit of claim 4, wherein at least one of the first switch and the second switch is a relay.
6. The dc boost charging circuit of power battery according to claim 1, further comprising:
a pre-charging unit for charging the support capacitor;
the output end of the pre-charging unit is connected between the second switch unit and the commercial power rectification unit.
7. The direct-current boost charging circuit of power battery according to claim 6, characterized in that said pre-charging unit comprises a DC/DC converter.
8. The direct-current boost charging circuit of power battery according to claim 7, characterized in that said pre-charging unit comprises an isolated DC/DC converter.
9. A DC boost charging circuit for a power cell according to any of claims 1 to 8 in which the mains rectification unit comprises an AC/DC converter.
10. An electric vehicle, characterized in that, comprising the direct current boost charging circuit of the power battery according to any one of claims 1-8.
CN202222763019.4U 2022-10-19 2022-10-19 Direct current boost charging circuit of power battery and electric vehicle Active CN218702748U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222763019.4U CN218702748U (en) 2022-10-19 2022-10-19 Direct current boost charging circuit of power battery and electric vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222763019.4U CN218702748U (en) 2022-10-19 2022-10-19 Direct current boost charging circuit of power battery and electric vehicle

Publications (1)

Publication Number Publication Date
CN218702748U true CN218702748U (en) 2023-03-24

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