CN219436181U - High-voltage interlocking circuit, electric controller and electric automobile - Google Patents
High-voltage interlocking circuit, electric controller and electric automobile Download PDFInfo
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- CN219436181U CN219436181U CN202320212773.0U CN202320212773U CN219436181U CN 219436181 U CN219436181 U CN 219436181U CN 202320212773 U CN202320212773 U CN 202320212773U CN 219436181 U CN219436181 U CN 219436181U
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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
- Y02T10/72—Electric energy management in electromobility
Abstract
The application discloses a high-voltage interlocking circuit, an electric controller and an electric automobile, and belongs to the technical field of new energy automobiles. The high-voltage interlocking circuit comprises a plurality of high-voltage connectors, and each high-voltage connector is provided with two high-voltage interlocking signal wires respectively; the electric connector is electrically connected with each high-voltage interlocking signal wire, so that each high-voltage interlocking signal wire forms a serial loop; the circuit board is provided with a first signal wire connector and a control circuit, the control circuit is electrically connected with the first signal wire connector, and the first signal wire connector is electrically connected with the head end and the tail end of the series circuit. According to the high-voltage interlocking circuit, all high-voltage interlocking signal wires are connected in series by using the electric connector, the circuit board is required to be connected with the high-voltage interlocking signal wires after being connected in series by using the connector with two pins, the occupation of the space of the circuit board is reduced, the wiring is simpler, the length of the high-voltage interlocking signal wires is shortened, and the voltage drop is smaller.
Description
Technical Field
The application belongs to the technical field of new energy automobiles, and particularly relates to a high-voltage interlocking circuit, an electric controller and an electric automobile.
Background
The high-voltage circuit is generally required to have a high-voltage interlock function, i.e., a function of detecting a defective (or disconnection) of the high-voltage connector. In order to realize high-voltage interlocking detection of high-voltage direct-current and alternating-current side power harnesses, high-voltage interlocking signal wires of all high-voltage connectors are usually connected to a PCB, and serial connection of the interlocking signal wires is realized on the PCB. When the number of the high-interlock signal wires is large, the wiring is complicated and messy, and the situation that the internal space of a case is limited or the space of a PCB (printed circuit board) surface is limited so that too many high-interlock signal wires cannot be connected easily occurs.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides the high-voltage interlocking circuit, the electric controller and the electric automobile, occupation of the circuit board space is reduced, wiring is simpler, and voltage drop of the high-voltage interlocking signal line is smaller.
In a first aspect, the present application provides a high voltage interlock circuit, the high voltage interlock circuit including a plurality of high voltage connectors, each high voltage connector being provided with two high voltage interlock signal lines, respectively; the electric connector is electrically connected with each high-voltage interlocking signal wire, so that each high-voltage interlocking signal wire forms a serial loop; the circuit board is provided with a first signal wire connector and a control circuit, the control circuit is electrically connected with the first signal wire connector, and the first signal wire connector is electrically connected with the head end and the tail end of the series circuit.
According to the high-voltage interlocking circuit, all high-voltage interlocking signal wires are connected in series by using the electric connector, the circuit board is required to be connected with the high-voltage interlocking signal wires after being connected in series by using the connector with two pins, the occupation of the space of the circuit board is reduced, the wiring is simpler, the length of the high-voltage interlocking signal wires is shortened, and the voltage drop is smaller.
According to one embodiment of the present application, the electrical connector includes a plurality of wire-to-wire connectors, each wire-to-wire connector electrically connected to a high voltage interlock signal wire.
According to one embodiment of the present application, the first signal wire connector is electrically connected to two high voltage interlock signal wires connected to different high voltage connector.
According to one embodiment of the present application, the plurality of high voltage connectors includes a positive high voltage connector, a negative high voltage connector, a U-phase high voltage connector, a V-phase high voltage connector, and a W-phase high voltage connector.
According to one embodiment of the present application, a circuit board includes: the switching circuit board is provided with a first signal wire connector and a second signal wire connector; and the control circuit board is provided with a control circuit and a third signal wire connector, the second signal wire connector is connected with the third signal wire connector through a signal wire, and the signal wire is used for transmitting an electric signal of the series circuit.
In a second aspect, the present application provides an electrical controller comprising a chassis and a high voltage interlock circuit according to any one of the above embodiments, the high voltage interlock circuit comprising a plurality of high voltage connectors, an electrical connector and a circuit board, the high voltage interlock signal wires of the high voltage connectors being at least partially disposed inside the chassis, the electrical connector and the circuit board being disposed inside the chassis.
According to the electric controller, all the high-voltage interlocking signal wires are connected in series by using the electric connector, so that occupation of the high-voltage interlocking signal wires to a circuit board space is reduced, wiring is more concise, meanwhile, the length of the high-voltage interlocking signal wires is shortened, voltage drop is smaller, requirements on a case space are reduced, and the case is reduced.
According to one embodiment of the present application, an electrical connector includes a male header having a plurality of connection ends and a female header having a plurality of connection ends, the connection ends of the male header being in communication with the connection ends of the corresponding female header, a plurality of high voltage connectors including a high voltage dc side connector and a high voltage ac side connector, a high voltage interlock signal line of the high voltage dc side connector being electrically connected with the female header, and a high voltage interlock signal line of the high voltage ac side connector being electrically connected with the male header.
According to one embodiment of the present application, the electrical connector includes a plurality of wire-to-wire connectors, one end of the wire-to-wire connectors being the connection end of the male head and the other end being the connection end of the female head.
According to one embodiment of the present application, the high voltage dc side plug comprises a positive high voltage plug and a negative high voltage plug, and the high voltage ac side plug comprises a U-phase high voltage plug, a V-phase high voltage plug and a W-phase high voltage plug.
In a third aspect, the present application provides an electric vehicle comprising a high voltage circuit and an electric controller according to any one of the above embodiments, the electric controller comprising a plurality of high voltage connectors, the high voltage connectors being electrically connected to the high voltage circuit.
According to the electric automobile, all the high-voltage interlocking signal wires are connected in series by using the electric connector, so that the occupation of the high-voltage interlocking signal wires to the space of the circuit board is reduced, the wiring is simpler, and meanwhile, the length of the high-voltage interlocking signal wires and the voltage drop are smaller.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:
FIG. 1 is a schematic diagram of a high voltage interlock circuit according to an embodiment of the present application;
FIG. 2 is a second schematic diagram of a high voltage interlock circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an electronic controller according to an embodiment of the present application.
Reference numerals:
a high voltage connector 100, a high voltage interlock signal line 110;
an electrical connector 200;
a circuit board 300, a first signal line connector 310, a switching circuit board 320, a control circuit board 330, a second signal line connector 340, a third signal line connector 350;
and a housing 400.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
Referring to fig. 1, one embodiment of the present application provides a high voltage interlock circuit.
In the present embodiment, the high-voltage interlock circuit includes a plurality of high-voltage connectors 100, an electrical connector 200, and a circuit board 300, each high-voltage connector 100 being provided with two high-voltage interlock signal lines 110, respectively; the electrical connector 200 is electrically connected to each of the high-voltage interlocking signal lines 110, so that each of the high-voltage interlocking signal lines 110 forms a series circuit; the circuit board 300 is provided with a first signal line connector 310 and a control circuit, the control circuit is electrically connected with the first signal line connector 310, and the first signal line connector 310 is electrically connected with the head end and the tail end of the series circuit.
It is understood that one end of the two high voltage interlocking signal wires 110 extending from each high voltage connector 100 is electrically connected inside the high voltage connector 100, and the two high voltage interlocking signal wires 110 extending from each high voltage connector 100 are in a series relationship. Therefore, a series circuit is formed by electrically connecting one high-voltage interlocking signal line 110 extending from one high-voltage connector 100 with one high-voltage interlocking signal line 110 extending from another high-voltage connector 100.
In the present embodiment, the electrical connector 200 includes a plurality of connection terminals, and each connection terminal communicates two by two. The two connecting terminals that communicate are electrically connected to one high-voltage interlock signal line 110 extending from one high-voltage connector 100 and one high-voltage interlock signal line 110 extending from the other high-voltage connector 100, respectively.
It should be noted that the first signal line connector 310 may include a plurality of pins. The head end and the tail end of the series loop are respectively connected with one pin. Therefore, the serial circuit formed by the high voltage interlocking signal line 110 in the present embodiment only needs to occupy two pins in the circuit board 300, thereby reducing space occupation.
In some embodiments, two pins in the first signal wire connector 310 may be electrically connected with two high-voltage interlocking signal wires 110 connected to different high-voltage connector 100, respectively, and the other high-voltage interlocking signal wires 110 except for the two high-voltage interlocking signal wires 110 are electrically connected with connection terminals in the electrical connector 200, respectively. Thus, the two high voltage interlocking signal lines 110 connected to different high voltage connectors 100 are connected in series at the end and end of the series circuit, so that the number of signal lines can be reduced.
In other embodiments, two pins in the first signal line connector 310 may be electrically connected to two connection terminals of the electrical connector 200 through signal lines, respectively, which are electrically connected to two connection terminals to which the high voltage interlock signal line 110 is connected, respectively. Thus, the electrical connector 200 may additionally draw out two signal wires as the end-to-end ends of the serial circuit to electrically connect with the first signal wire connector 310, thereby shortening the length of the high voltage interlocking signal wire 110 when the first signal wire connector 310 is far from the high voltage connector 100.
In other embodiments, one pin of the first signal line connector 310 is electrically connected to one high voltage interlocking signal line 110, and the other pin is electrically connected to a connection terminal of the electrical connector 200 through the signal line, the connection terminal being electrically connected to a connection terminal to which the high voltage interlocking signal line 110 is connected. Thus, one high-voltage interlocking signal line 110 and one signal line additionally led out from the electrical connector 200 serve as the head-to-tail ends of the series circuit. Of course, the selection of the signal lines at the end and the head of the series circuit can be set according to the requirement, and the embodiment is not limited to this.
After the control circuit is electrically connected to the first signal line connector 310, the signal in the serial circuit may be detected, and the state of the high voltage connector 100 may be determined according to the signal change. For example, when any one of the high-voltage connectors 100 is defective, the series circuit is disconnected, and the control circuit detects the disconnection operation and executes the corresponding operation. The principles of signal monitoring and the like in the high-voltage interlocking signal line 110 and the specific circuit structure of the control circuit are already mature technologies, and this embodiment will not be described herein.
According to the high-voltage interlocking circuit, all the high-voltage interlocking signal wires 110 are connected in series by using the electric connector 200, and the circuit board 300 is required to be connected with the high-voltage interlocking signal wires 110 after being connected in series by using a connector with two pins, so that the occupation of the space of the circuit board 300 is reduced, the wiring is simpler, the length of the high-voltage interlocking signal wires 110 is shortened, and the voltage drop is smaller.
In some embodiments of the present application, the electrical connector 200 may include a plurality of wire-to-wire connectors, each wire-to-wire connector electrically connected to the high voltage interlock signal wire 110.
It is understood that the wire-to-wire connector provides two wire connection terminals, and the two wire connection terminals are in a communicating state therebetween. The two high voltage interlock signal lines 110 connected to both ends of the line-to-line connector cannot be the two high voltage interlock signal lines 110 extending from the same high voltage connector 100.
In some embodiments, the number of wire-to-wire connectors is at least 1 less than the number of high-voltage connector 100. When two high voltage interlock signal wires 110 connected to different high voltage connectors 100 are connected at the end to end of the serial circuit, the number of the high voltage interlock signal wires 110 required to be connected in the wire-to-wire connector is the number of all the high voltage interlock signal wires 110 minus 2.
In other embodiments, the number of wire-to-wire connectors is at least 1 greater than the number of high-voltage connector 100. When the electrical connector 200 is used to provide an additional two signal lines to be routed out as the end-to-end of the series loop, the line-to-line connector needs to connect all of the high voltage interlock signal lines 110 and the additional two signal lines.
Referring to fig. 2, in some embodiments of the present application, the plurality of high voltage connectors 100 includes a positive high voltage connector, a negative high voltage connector, a U-phase high voltage connector, a V-phase high voltage connector, and a W-phase high voltage connector.
In some embodiments, the high voltage circuit may include a rectifying or inverting unit, the positive high voltage connector and the negative high voltage connector being disposed on a direct current side of the rectifying or inverting unit, the U-phase high voltage connector, the V-phase high voltage connector, and the W-phase high voltage connector being disposed on an alternating current side of the rectifying or inverting unit. Therefore, the high-voltage interlocking circuit can detect the input and output safety of the high-voltage power supply in the high-voltage loop.
In some embodiments, the two high voltage interlock signal lines 110 of the positive high voltage connector and the two high voltage interlock signal lines 110 of the negative high voltage connector may be electrically connected with the female header of the wire-to-wire connector, one high voltage interlock signal line 110 of the U-phase high voltage connector, the two high voltage interlock signal lines 110 of the V-phase high voltage connector and the two high voltage interlock signal lines 110 of the W-phase high voltage connector may be electrically connected with the male header of the wire-to-wire connector, and one high voltage interlock signal line 110 of the U-phase high voltage connector and one high voltage interlock signal line 110 of the W-phase high voltage connector may be electrically connected with the first signal wire connector 310.
In some embodiments of the present application, the circuit board 300 may include a patch circuit board 320 and a control circuit board 330, where the patch circuit board 320 is provided with a first signal line connector 310 and a second signal line connector 340; the control circuit board 330 is provided with a control circuit and a third signal line connector 350, and the second signal line connector 340 is connected to the third signal line connector 350 through a signal line for transmitting an electrical signal of the series circuit.
It should be noted that, circuits related to functions other than the high-voltage interlock function may be provided on the switching circuit board 320 and the control circuit board 330. To facilitate functional integration of the device, each modular circuit board 300 is fabricated as a separate PCB (printed circuit board) board by integrating a plurality of functional circuits on the circuit board 300 in the device and modularizing the circuit board 300.
Referring to fig. 3, an embodiment of the present application also provides an electronic controller.
In this embodiment, the electronic controller includes a chassis 400 and the high voltage interlock circuit according to any one of the above embodiments, the high voltage interlock circuit includes a plurality of high voltage connectors 100, an electrical connector 200, and a circuit board 300, the high voltage interlock signal lines 110 of the high voltage connectors 100 are at least partially disposed inside the chassis 400, and the electrical connector 200 and the circuit board 300 are disposed inside the chassis 400.
In some embodiments, the high voltage connector 100 may also be disposed on the chassis 400, and the high voltage connector 100 may externally access a power source and output the converted power source. The signal high voltage interlock signal line 110 from which the high voltage connector 100 extends is inside the cabinet 400.
In other embodiments, the high voltage connector 100 may be disposed outside the electronic controller, and the chassis 400 may be provided with a signal line interface for connecting the signal high voltage interlock signal line 110 extended by the high voltage connector 100 to the interior of the chassis 400. Reference may be made to the foregoing embodiments for specific construction of the high voltage interlock circuit.
According to the electric controller, all the high-voltage interlocking signal wires 110 are connected in series by using the electric connector 200, so that the occupation of the high-voltage interlocking signal wires 110 to the space of the circuit board 300 is reduced, the wiring is more concise, meanwhile, the length of the high-voltage interlocking signal wires 110 is shortened, the voltage drop is smaller, the requirement on the space of the case 400 is reduced, and the case 400 is reduced.
In some embodiments of the present application, the electrical connector 200 includes a male header having a plurality of connection ends and a female header having a plurality of connection ends, the connection ends of the male header being in communication with the connection ends of the corresponding female header, the plurality of high voltage connectors 100 including a high voltage dc side connector and a high voltage ac side connector, the high voltage interlocking signal lines 110 of the high voltage dc side connector being electrically connected to the female header, the high voltage interlocking signal lines 110 of the high voltage ac side connector being electrically connected to the male header.
It should be noted that, the hvdc side connector and the hvdc side connector or the signal line interfaces to which the hvdc side connector and the hvdc side connector are connected are generally disposed in different areas on the chassis 400, such as on the left and right sides or on the upper and lower sides, respectively. Therefore, to make the harness more compact, the high-voltage interlocking signal lines 110 distributed on the same side are all connected to the male or female heads on the corresponding sides, thereby avoiding the harness winding.
In this embodiment, the circuit board 300 may be disposed near the ac-high side connector or the signal line interface to which the ac-high side connector is connected, so that the ac-high side connector's ac-high voltage interlocking signal line 110 may be directly electrically connected to the first signal line connector 310 on the circuit board 300.
In some embodiments of the present application, the electrical connector 200 may include a plurality of wire-to-wire connectors, one end of which serves as a connection end of the male head and the other end of which serves as a connection end of the female head.
It is understood that the wire-to-wire connector provides two wire connection terminals, and the two wire connection terminals are in a communicating state therebetween. One end of the wire-to-wire connector may be electrically connected to the high-voltage interlocking signal wire 110 of the high-voltage direct-current side connector, and the other end is electrically connected to the high-voltage interlocking signal wire 110 of the high-voltage alternating-current side connector.
In some embodiments of the present application, the high voltage dc side connector comprises a positive high voltage connector and a negative high voltage connector, and the high voltage ac side connector comprises a U-phase high voltage connector, a V-phase high voltage connector, and a W-phase high voltage connector.
In some embodiments, the high voltage circuit may include a finishing or inverting unit, the positive high voltage connector and the negative high voltage connector being disposed on a direct current side of the finishing or inverting unit, the U-phase high voltage connector, the V-phase high voltage connector, and the W-phase high voltage connector being disposed on an alternating current side of the finishing or inverting unit. Therefore, the high-voltage interlocking circuit can detect the input and output safety of the high-voltage power supply in the high-voltage loop.
In a third aspect, the present application provides an electric vehicle comprising a high voltage circuit and an electric controller according to any one of the above embodiments, the electric controller comprising a plurality of high voltage connectors, the high voltage connectors being electrically connected to the high voltage circuit. The specific structure of the electric controller may refer to the foregoing, and this embodiment is not described herein.
According to the electric automobile, all the high-voltage interlocking signal wires are connected in series by the electric connector 200, so that the occupation of the high-voltage interlocking signal wires 110 to the space of the circuit board 300 is reduced, the wiring is simpler, and meanwhile, the length of the high-voltage interlocking signal wires 110 and the voltage drop are smaller. The electric automobile can also apply the technical scheme in the embodiments, so that the electric automobile has corresponding technical effects.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In the description of the present application, it should be understood that the terms "length," "width," "thickness," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A high voltage interlock circuit comprising:
the high-voltage connector comprises a plurality of high-voltage connectors, wherein each high-voltage connector is provided with two high-voltage interlocking signal wires;
the electric connector is electrically connected with each high-voltage interlocking signal wire, so that each high-voltage interlocking signal wire forms a serial loop;
the circuit board is provided with a first signal wire connector and a control circuit, the control circuit is electrically connected with the first signal wire connector, and the first signal wire connector is electrically connected with the head end and the tail end of the series circuit.
2. The high voltage interlock circuit of claim 1 wherein the electrical connector comprises a plurality of wire-to-wire connectors, each of the wire-to-wire connectors electrically connected to the high voltage interlock signal wire.
3. The high voltage interlock circuit of claim 2 wherein the first signal wire connector is electrically connected to two high voltage interlock signal wires connected to different high voltage connector assemblies.
4. The high voltage interlock circuit of any one of claims 1-3 wherein the plurality of high voltage connectors comprises a positive high voltage connector, a negative high voltage connector, a U-phase high voltage connector, a V-phase high voltage connector, and a W-phase high voltage connector.
5. The high voltage interlock circuit of any one of claims 1-3 wherein the circuit board comprises:
the switching circuit board is provided with the first signal wire connector and the second signal wire connector;
the control circuit board is provided with the control circuit and a third signal wire connector, the second signal wire connector is connected with the third signal wire connector through a signal wire, and the signal wire is used for transmitting the electric signal of the series circuit.
6. An electronic controller comprising a chassis and the high voltage interlock circuit according to any one of claims 1-5, the high voltage interlock circuit comprising a plurality of high voltage connectors, an electrical connector and a circuit board, the high voltage interlock signal wires of the high voltage connectors being disposed at least partially inside the chassis, the electrical connector and the circuit board being disposed inside the chassis.
7. The electrical controller of claim 6, wherein the electrical connector comprises a male header having a plurality of connection ends and a female header having a plurality of connection ends, the connection ends of the male header being in communication with the corresponding connection ends of the female header, the plurality of high voltage connectors comprising a high voltage dc side connector and a high voltage ac side connector, the high voltage dc side connector having a high voltage interlock signal line electrically connected to the female header and the high voltage ac side connector having a high voltage interlock signal line electrically connected to the male header.
8. The electrical controller of claim 7, wherein the electrical connector comprises a plurality of wire-to-wire connectors, one end of the wire-to-wire connectors being the connection end of the male head and the other end being the connection end of the female head.
9. The electrical controller of claim 7, wherein the high voltage dc side plug comprises a positive high voltage plug and a negative high voltage plug, the high voltage ac side plug comprising a U-phase high voltage plug, a V-phase high voltage plug, and a W-phase high voltage plug.
10. An electric vehicle comprising a high voltage circuit and an electrical controller according to any one of claims 6-9, the electrical controller comprising a plurality of high voltage connectors electrically connected to the high voltage circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320212773.0U CN219436181U (en) | 2023-02-01 | 2023-02-01 | High-voltage interlocking circuit, electric controller and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320212773.0U CN219436181U (en) | 2023-02-01 | 2023-02-01 | High-voltage interlocking circuit, electric controller and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219436181U true CN219436181U (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320212773.0U Active CN219436181U (en) | 2023-02-01 | 2023-02-01 | High-voltage interlocking circuit, electric controller and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219436181U (en) |
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- 2023-02-01 CN CN202320212773.0U patent/CN219436181U/en active Active
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