Electric vehicle electrical safety performance detection device and method adapting to random distribution of charging ports

Abstract

The invention discloses an electric vehicle electrical safety performance detection device and method adaptive to arbitrary distribution of charging ports, and belongs to the technical field of electric vehicle electrical safety performance detection. The electric vehicle electrical safety performance detection device comprises an electrical safety tester, a direct current charging detection probe, an alternating current charging detection probe, a potential equalization detection probe and an electrical platform test clamp; a plurality of groups of pressurization ends and test ends are arranged in the electrical safety tester; one ends of the plurality of groups of pressurization ends and test ends are respectively connected with a direct current charging detection probe, an alternating current charging detection probe, a potential equalization detection probe and an electrical platform test clamp; according to the invention, the electric safety performance test of the electric vehicle can be carried out for any type of charging ports, the electric safety performance test of the electric vehicle can be carried out no matter whether the charging ports can be closely arranged and spaced apart, the detection advantages of rapidness, low cost and high reliability are realized, and the personnel safety of the vehicle and the vehicle safety can be ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicle electrical safety performance detection, and in particular relates to an electric vehicle electrical safety performance detection device and method that are adaptable to arbitrary distribution of charging ports. Background Art

[0002] As the name suggests, an electric vehicle is a vehicle that uses electricity as a power source and drives the wheels through an electric motor. Common battery types for electric vehicles include lead-acid batteries, nickel-based batteries (such as nickel-metal hydride batteries, nickel-zinc batteries), lithium batteries (such as secondary lithium batteries), sodium batteries, and air batteries. In order to test the electrical safety performance of electric vehicles, it is necessary to apply their detection devices and methods.

[0003] At present, the electric safety performance testing device of electric vehicles is equipped with an AC charging gun, a DC charging gun and an electric platform detection clip. When performing the potential equalization test between conductive parts, the DC charging detection probe and the AC charging detection probe are simultaneously inserted into the DC charging socket and the AC charging socket of the electric vehicle, and the on-resistance between the PE of the DC charging socket and the PE of the AC charging socket is measured. However, for some electric vehicles, the distance between the DC charging port and the AC charging port is very close. For such a distribution of charging ports, if the DC charging gun and the AC charging gun are inserted into the charging socket at the same time, structural interference will occur, so the potential equalization test between conductive parts cannot be realized. In order to solve the above problems, an electric vehicle electrical safety performance testing device and method that adapts to the arbitrary distribution of charging ports is urgently needed. Summary of the invention

[0004] At present, the electric safety performance detection device of electric vehicles is equipped with an AC charging gun, a DC charging gun and an electric platform detection clip. When performing the potential equalization detection between conductive parts, the DC charging detection probe and the AC charging detection probe are simultaneously inserted into the DC charging socket and the AC charging socket of the electric vehicle, and the on-resistance between the PE of the DC charging socket and the PE of the AC charging socket is measured. However, for some electric vehicles, the distance between the DC charging port and the AC charging port is very close. For such a distribution of charging ports, if the DC charging gun and the AC charging gun are simultaneously inserted into the charging socket, structural interference will occur, so the problem of the potential equalization test between conductive parts cannot be realized. The present invention is to solve this problem. It is an electric safety performance detection device and method for electric vehicles that are adapted to the arbitrary distribution of charging ports.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An electric vehicle electrical safety performance detection device adapting to the arbitrary distribution of charging ports comprises an electrical safety tester, a DC charging detection probe, an AC charging detection probe, a potential equalization detection probe and an electrical platform test clip. The electrical safety tester is provided with a plurality of groups of pressurizing ends and test ends inside, and one end of the plurality of groups of pressurizing ends and test ends is respectively connected to the DC charging detection probe, the AC charging detection probe, the potential equalization detection probe and the electrical platform test clip.

[0007] The present invention also discloses a potential equalization detection probe included in an electric vehicle electrical safety performance detection device that is adaptable to arbitrary distribution of charging ports. The potential equalization detection probe is provided with a PE pin and two test wires. One end of the two test wires is electrically connected to the PE pin. The electrical connection is implemented in one of a fixed connection method and a detachable connection method.

[0008] Furthermore, the potential equalization detection probe has an anti-misinsertion device, which has the function of preventing the probe from being inserted into other ports of the charging socket.

[0009] The present invention also discloses a method for detecting the electrical safety performance of an electric vehicle that is adaptable to the arbitrary distribution of charging ports, comprising the following steps:

[0010] S1. Perform DC insulation resistance test;

[0011] S2, perform AC charging resistance test;

[0012] S3. Conduct potential equalization test between conductive parts and electrical platform;

[0013] S4. Perform potential equalization test between conductive parts.

[0014] Furthermore, in S1, a DC charging detection probe is inserted into a DC charging socket of a vehicle to test the insulation resistance between DC+ and DC- connected in parallel and the DC charging port PE.

[0015] Furthermore, in S2, an AC charging detection probe is inserted into the AC charging socket of the vehicle to test the insulation resistance between L1, L2, L3 and N connected in parallel and the AC charging port PE.

[0016] Furthermore, in S3, a DC charging detection probe is inserted into the DC charging port or an AC charging detection probe is inserted into the AC charging port, and the electric platform test clamp is clamped to the conductive connection part of the frame to test the conduction resistance between the PE of the connected charging port and the conductive part of the frame.

[0017] Furthermore, in S4, a potential equalization test is performed between the conductive components, and there are two specific situations.

[0018] Furthermore, in the first case of type S4, the distance between the two charging ports allows the DC charging detection probe and the AC charging detection probe to be inserted into the DC charging and AC ports at the same time. When testing the potential balance, the DC charging detection probe is directly inserted into the DC charging port, and the AC charging detection probe is inserted into the AC charging port. The test equipment measures the resistance between the PE of the DC charging port and the PE of the AC charging port.

[0019] Furthermore, in the second case of S4, the distance between the two charging ports does not allow the DC charging detection probe and the AC charging detection probe to be inserted into the DC charging and AC ports at the same time. When testing potential equalization, the DC charging detection probe is inserted into the DC charging port, and the potential equalization probe is inserted into the PE of the AC charging port; or the AC charging detection probe is inserted into the AC charging port, and the connector is inserted into the PE of the DC charging port, and the test equipment measures the resistance between the PE of the DC charging port and the PE of the AC charging port.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] In the present invention, the electrical safety performance test of electric vehicles can be performed for any type of charging ports. Regardless of whether the charging ports can be closely arranged or far apart, the electrical safety performance test of electric vehicles can be performed, which has the advantages of fast, low-cost, and highly reliable detection, and can ensure the safety of people and vehicles in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a schematic diagram of the structure of a potential equalization detection probe that can adapt to the arbitrary distribution of charging ports.

[0023] Figure 2 The first structural schematic diagram of an electric vehicle electrical safety performance detection device that is adaptable to any distribution of charging ports.

[0024] Figure 3 This is a second structural schematic diagram of an electric vehicle electrical safety performance detection device that is adaptable to any distribution of charging ports. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 2The present invention provides a technical solution: an electric safety performance detection device for an electric vehicle that is adaptable to any distribution of charging ports, comprising an electric safety tester, a DC charging detection probe, an AC charging detection probe, a potential equalization detection probe and an electric platform test clip, wherein a plurality of groups of pressurizing ends and test ends are arranged inside the electric safety tester, and one end of the plurality of groups of pressurizing ends and test ends is respectively connected to a DC charging detection probe, an AC charging detection probe, a potential equalization detection probe and an electric platform test clip.

[0028] The present invention also discloses a potential equalization detection probe included in an electric vehicle electrical safety performance detection device that is adaptable to arbitrary distribution of charging ports. The potential equalization detection probe is provided with a PE pin and two test wires. One end of the two test wires is electrically connected to the PE pin. The electrical connection is implemented in a fixed connection manner. The potential equalization detection probe has an anti-misinsertion device, which has the function of preventing the probe from being inserted into other ports of the charging socket.

[0029] Among them, when testing potential equalization, although the DC gun and the AC gun are required to be plugged into the charging socket of the electric vehicle at the same time, it is the FE of the two charging guns that works. Based on this, a potential equalization detection probe that can adapt to the arbitrary distribution of charging ports can be designed. The probe has only one FE pin. In this way, no interference will be generated for any arrangement of charging ports; in order to test small resistances, the probe is electrically connected to the two test wires; in order to prevent plugging into the wrong hole, this probe also has an anti-misplugging design. For the structural diagram of this probe, please refer to Figure 1 .

[0030] The present invention also discloses a method for detecting the electrical safety performance of an electric vehicle that is adaptable to the arbitrary distribution of charging ports, comprising the following steps:

[0031] S1. Perform a DC insulation resistance test. Insert the DC charging detection probe into the DC charging socket of the vehicle and test the insulation resistance between the DC+ and DC- in parallel and the DC charging port PE.

[0032] S2. Perform an AC charging resistance test. Insert the AC charging detection probe into the vehicle's AC charging socket and test the insulation resistance between L1, L2, L3 and N in parallel and the AC charging port PE.

[0033] S3. Perform a potential equalization test between the conductive parts and the electric platform. Insert the DC charging detection probe into the DC charging port or insert the AC charging detection probe into the AC charging port, clamp the electric platform test clamp to the conductive connection part of the frame, and test the conduction resistance between the PE of the connected charging port and the conductive part of the frame.

[0034] S4. There are two specific situations for potential equalization test between conductive parts. In the first situation, the distance between the two charging ports allows the DC charging detection probe and the AC charging detection probe to be inserted into the DC charging and AC ports at the same time. When testing the potential equalization, directly insert the DC charging detection probe into the DC charging port, and insert the AC charging detection probe into the AC charging port. The test equipment measures the resistance between the PE of the DC charging port and the PE of the AC charging port. In the second situation, the distance between the two charging ports does not allow the DC charging detection probe and the AC charging detection probe to be inserted into the DC charging and AC ports at the same time. When testing the potential equalization, insert the DC charging detection probe into the DC charging port, and insert the potential equalization probe into the PE of the AC charging port; or insert the AC charging detection probe into the AC charging port, and insert the plug into the PE of the DC charging port, and the test equipment measures the resistance between the PE of the DC charging port and the PE of the AC charging port.

[0035] In this embodiment, the electrical safety performance test of electric vehicles can be performed for any type of charging port. Regardless of whether the charging ports can be closely arranged or far apart, the electrical safety performance test of electric vehicles can be performed, which has the advantages of fast, low-cost, and highly reliable detection, and can ensure the safety of people and vehicles in use.

[0036] Example 2

[0037] See also Figure 3 The present invention provides a technical solution: an electric vehicle electrical safety performance detection device that is adaptable to any distribution of charging ports, the device consisting of a test cabinet, a DC charging detection probe, an AC charging detection probe, a potential equalization detection probe A, a potential equalization detection probe B, and an electric platform test clamp.

[0038] The testing method of the device is as follows:

[0039] 1. DC insulation resistance test method: Plug the DC charging detection probe into the DC charging socket of the vehicle. Test the insulation resistance between DC+ and DC- in parallel and the DC charging port PE.

[0040] 2. AC charging resistance test method: Insert the AC charging detection probe into the AC charging socket of the vehicle, and test the insulation resistance between L1, L2, L3 and N in parallel and the AC charging port PE.

[0041] 3. Potential equalization test method between conductive parts and electrical platform: Insert potential equalization detection probe A into the PE of DC charging port or the PE of AC charging port, and clamp the electrical platform test clip to the conductive connection part of the frame. Test the conduction resistance between the PE of the connected charging port and the conductive part of the frame.

[0042] 4. Potential Equalization Test Method between Conductive Parts

[0043] 1: For those vehicles, the arrangement of the two charging ports allows the DC charging detection probe and the AC charging detection probe to be inserted into the DC charging and AC ports at the same time. When testing the potential equalization, directly insert the DC charging detection probe into the DC charging port and the AC charging detection probe into the AC charging port. The test equipment measures the resistance between the PE of the DC charging port and the PE of the AC charging port.

[0044] 2: For those vehicles, the arrangement of the two charging ports cannot allow the DC charging detection probe and the AC charging detection probe to be inserted into the DC charging and AC ports at the same time. When testing the potential equalization, directly insert the potential equalization detection probe A into the PE hole of the DC charging port, and insert the potential equalization detection probe B into the PE hole of the AC charging port, and then the test equipment measures the resistance between the PE of the DC charging port and the PE of the AC charging port.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric vehicle electrical safety performance detection device adapted to any distribution of charging ports, comprising an electrical safety tester, a DC charging detection probe, an AC charging detection probe, a potential equalization detection probe and an electrical platform test clamp, characterized in that: The electrical safety tester is provided with a plurality of groups of pressurizing ends and testing ends inside, and one end of the plurality of groups of pressurizing ends and testing ends is respectively connected to a DC charging detection probe, an AC charging detection probe, a potential equalization detection probe and an electric platform test clamp.

2. The potential equalization detection probe included in the electric safety performance detection device for electric vehicles adapted to any distribution of charging ports according to claim 1 is characterized in that: The potential equalization detection probe is provided with a PE pin and two test wires. One end of the two test wires is electrically connected to the PE pin. The electrical connection is implemented in one of a fixed connection mode and a detachable connection mode.

3. The potential equalization detection probe included in the electric safety performance detection device for electric vehicles adapted to the arbitrary distribution of charging ports according to claim 2 is characterized in that: The potential equalization detection probe has an anti-wrong insertion device, which has the function of preventing the probe from being inserted into other ports of the charging socket.

4. The electric vehicle electrical safety performance detection method adapted to the arbitrary distribution of charging ports according to claim 1 is characterized in that: The steps include: S1. Perform DC insulation resistance test; S2, perform AC charging resistance test; S3. Conduct potential equalization test between conductive parts and electrical platform; S4. Perform potential equalization test between conductive parts.

5. The electric vehicle electrical safety performance detection method adapted to the arbitrary distribution of charging ports according to claim 4 is characterized in that: In S1, a DC charging detection probe is inserted into the DC charging socket of the vehicle to test the insulation resistance between DC+ and DC- connected in parallel and the DC charging port PE.

6. The electric vehicle electrical safety performance detection method adapted to the arbitrary distribution of charging ports according to claim 4 is characterized in that: In S2, the AC charging detection probe is inserted into the AC charging socket of the vehicle to test the insulation resistance between L1, L2, L3 and N connected in parallel and the AC charging port PE.

7. The electric vehicle electrical safety performance detection method adapted to the arbitrary distribution of charging ports according to claim 4 is characterized in that: In S3, a DC charging detection probe is inserted into a DC charging port or an AC charging detection probe is inserted into an AC charging port, and an electric platform test clamp is clamped to a conductive connection part of the frame to test the conduction resistance between the PE of the connected charging port and the conductive part of the frame.

8. The electric vehicle electrical safety performance detection method adapted to the arbitrary distribution of charging ports according to claim 4 is characterized in that: In S4, a potential equalization test is performed between the conductive components, and there are two specific situations.

9. The electric vehicle electrical safety performance detection method adapted to the arbitrary distribution of charging ports according to claim 8 is characterized in that: In the first case of S4, the distance between the two charging ports allows the DC charging detection probe and the AC charging detection probe to be inserted into the DC charging and AC ports at the same time. When testing the potential balance, the DC charging detection probe is directly inserted into the DC charging port, and the AC charging detection probe is inserted into the AC charging port. The test equipment measures the resistance between the PE of the DC charging port and the PE of the AC charging port.

10. The electric vehicle electrical safety performance detection method adapted to the arbitrary distribution of charging ports according to claim 8, characterized in that: In the second case of S4, the distance between the two charging ports does not allow the DC charging detection probe and the AC charging detection probe to be inserted into the DC charging and AC ports at the same time. When testing potential equalization, the DC charging detection probe is inserted into the DC charging port, and the potential equalization probe is inserted into the PE of the AC charging port; or the AC charging detection probe is inserted into the AC charging port, and the connector is inserted into the PE of the DC charging port, and the test equipment measures the resistance between the PE of the DC charging port and the PE of the AC charging port.

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