Electrical signal conversion device

Abstract

This disclosure provides an electrical signal conversion device, relating to the field of electric vehicle technology. The electrical signal conversion device includes: a housing assembly, a first wiring assembly, a second wiring assembly, and a detection wiring assembly; the first wiring assembly is located on a first side of the housing assembly, with a first plug-in terminal located outside the housing assembly and a first crimp terminal located inside the housing assembly; the second wiring assembly is located on a second side of the housing assembly, with a second plug-in terminal located outside the housing assembly and a second crimp terminal located inside the housing assembly; the detection wiring assembly is located on a third side of the housing assembly, with an instrument connection terminal located outside the housing assembly and a third crimp terminal located inside the housing assembly; the first, second, and third crimp terminals are electrically connected. This electrical signal conversion device improves the ease of operation and safety of electrical signal conversion devices.

Description

Technical Field

[0001] This disclosure relates to the field of electric vehicle technology, and in particular to an electrical signal switching device. Background Technology

[0002] With the development of electric vehicle technology, more and more people are choosing economical and environmentally friendly electric vehicles. The market share of electric vehicles is increasing year by year, which brings enormous challenges to after-sales testing personnel. Traditional cars use a 12V power supply circuit, requiring only the measuring equipment to be directly connected to the circuit under test, or the insulation layer of the circuit under test's wires to be broken, the measuring wires to be connected, and then wrapped with insulating tape. However, electric vehicles commonly use high-voltage circuits such as 400V, making it impossible to operate using the same measurement methods as traditional cars. Summary of the Invention

[0003] This disclosure provides an electrical signal conversion device that can solve the problem of the inability to measure the high-voltage circuit of electric vehicles.

[0004] The technical solution is as follows:

[0005] On the one hand, an electrical signal conversion device is provided, the electrical signal conversion device comprising: a housing assembly, a first wiring assembly, a second wiring assembly, and a detection wiring assembly;

[0006] The first wiring assembly includes a first plug-in terminal and a first crimp terminal; the second wiring assembly includes a second plug-in terminal and a second crimp terminal; and the detection wiring assembly includes an instrument connection terminal and a third crimp terminal.

[0007] The first wiring assembly is located on a first side of the housing assembly, the first plug-in terminal is located outside the housing assembly, and the first crimp terminal is located inside the housing assembly; the second wiring assembly is located on a second side of the housing assembly, the second plug-in terminal is located outside the housing assembly, and the second crimp terminal is located inside the housing assembly; the detection wiring assembly is located on a third side of the housing assembly, the instrument connection terminal is located outside the housing assembly, and the third crimp terminal is located inside the housing assembly; the first crimp terminal, the second crimp terminal, and the third crimp terminal are electrically connected.

[0008] In some embodiments, the first plug-in terminal is provided with a first male plug-in component, which is matched and plugged into a second female plug-in component in the high voltage circuit to be tested.

[0009] The second connector is provided with a first female connector, which is matched and plugged into the second male connector in the high voltage circuit to be tested.

[0010] In some embodiments, the high-voltage circuit under test includes a high-voltage device and a high-voltage wiring harness. The second female connector is located on the high-voltage device, and the second male connector is located on the high-voltage wiring harness. The second female connector and the second male connector are matched and plugged in to realize the electrical connection between the high-voltage device and the high-voltage wiring harness.

[0011] In some embodiments, the first wiring assembly further includes a first wire harness and a first wire guide structure;

[0012] The first plug-in end and the first crimp end are respectively located at both ends of the first wire harness. The first wire guide structure is located on the housing assembly. The first wire harness passes through the first wire guide structure, and at least a portion of the first wire harness is located outside the housing assembly, so that the first plug-in end can use the flexibility of the first wire harness to adjust the plug-in position and / or plug-in direction.

[0013] In some embodiments, the second wiring assembly further includes a second wire harness and a second wire-passing structure;

[0014] The second plug-in end and the second crimp end are respectively located at both ends of the second wire harness, the second wire guide structure is located on the housing assembly, and the first wire harness passes through the first wire guide structure; the second plug-in end is fixedly disposed on the outer surface of the housing assembly.

[0015] In some embodiments, the housing assembly is cuboid in shape, the first side and the second side are two end faces of the housing assembly, and the third side is one of the side faces of the housing assembly.

[0016] In some embodiments, the electrical signal conversion device further includes a conversion component located within the housing assembly; the conversion component is electrically connected to the first crimp terminal, the second crimp terminal, and the third crimp terminal, respectively.

[0017] In some embodiments, the adapter assembly includes an insulating base and two bridging copper busbars;

[0018] The insulating base is located inside the housing assembly, and the two bridging copper busbars are respectively arranged on the insulating base. The live wire terminal in the first crimping end and the live wire terminal in the second crimping end are respectively crimped to the two ends of the same bridging copper busbar, and the neutral wire terminal in the first crimping end and the neutral wire terminal in the second crimping end are respectively crimped to the two ends of the other bridging copper busbar.

[0019] The live wire terminal and the neutral wire terminal of the third crimping end are respectively crimped onto the two bridging copper busbars.

[0020] In some embodiments, a fuse is provided in the middle of the bridging copper busbar connected to the live wire terminal.

[0021] On the other hand, a high-voltage circuit detection method is provided, which uses the electrical signal conversion device described in this disclosure. The high-voltage circuit includes high-voltage equipment and high-voltage wire harness. The high-voltage equipment is provided with a second female connector, and the high-voltage wire harness is provided with a second male connector that matches and plugs into the second female connector.

[0022] The high-voltage circuit detection method includes:

[0023] Disconnect the second female connector and the second male connector;

[0024] Connect the first plug-in terminal to the second female plug-in connector, and connect the second plug-in terminal to the second male plug-in connector.

[0025] Connect the instrument connection terminal electrically to the measuring instrument;

[0026] Start the measuring instrument to perform the measurement.

[0027] The beneficial effects of the technical solution provided in this disclosure include at least the following:

[0028] The electrical signal conversion device disclosed herein is suitable for measuring high-voltage circuits. The first wiring assembly and the second wiring assembly can be plugged into the high-voltage circuit through the first plug-in terminal and the second plug-in terminal, respectively. The first crimp terminal of the first wiring assembly and the second crimp terminal of the second wiring assembly are electrically connected within the housing assembly to ensure that the high-voltage circuit remains unobstructed. The third crimp terminal of the detection wiring assembly is electrically connected within the housing assembly to the first crimp terminal and the second crimp terminal, respectively. The instrument connection terminal of the detection wiring assembly is connected to a measuring instrument, thereby allowing the current in the high-voltage circuit to be introduced into the measuring instrument, realizing the detection and / or measurement of the high-voltage circuit. The first plug-in terminal, the second plug-in terminal, and the instrument connection terminal are located on three sides of the housing assembly, which helps to improve the ease of operation and safety of the electrical signal conversion device. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the electrical signal conversion device provided in the embodiments of this disclosure;

[0031] Figure 2This is a structural cross-sectional view of the electrical signal switching device provided in the embodiments of this disclosure;

[0032] Figure 3 This is a top view of the electrical signal switching device provided in the embodiments of this disclosure;

[0033] Figure 4 This is a structural side view of the electrical signal switching device provided in the embodiments of this disclosure;

[0034] Figure 5 This is an exploded view of the electrical signal switching device provided in the embodiments of this disclosure;

[0035] Figure 6 This is a schematic diagram showing the connection between the electrical signal conversion device and the high-voltage circuit provided in the embodiments of this disclosure.

[0036] The reference numerals in the figure are respectively:

[0037] 1. Housing assembly;

[0038] 101. First side view; 102. Second side view; 103. Third side view;

[0039] 11. Box body; 12. Box lid; 13. First fastening screw;

[0040] 2. First wiring assembly;

[0041] 21. First plug-in terminal; 211. First male plug-in component; 22. First crimp terminal; 23. First wire harness; 24. First wire guide structure;

[0042] 3. Second wiring assembly;

[0043] 31. Second plug-in terminal; 311. First female plug-in component; 32. Second crimp terminal; 33. Second wire harness; 34. Second wire guide structure; 35. Second fastening screw;

[0044] 4. Inspect the wiring components;

[0045] 41. Instrument connection terminal; 42. Third crimp terminal; 43. Third wire harness; 44. Third wire guide structure;

[0046] 5. High-voltage equipment;

[0047] 51. Second female connector;

[0048] 6. High-voltage wiring harness;

[0049] 61. Second male connector;

[0050] 7. Adapter components;

[0051] 71. Insulating base; 72. Bridging copper busbar; 73. Fuse. Detailed Implementation

[0052] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0053] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0054] It should be understood that in this disclosure, "electrical connection" can be understood as physical contact and electrical conduction between components; it can also be understood as a form of connection between different components in a circuit structure through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Communication connection" can refer to the transmission of electrical signals, including wireless communication connections and wired communication connections. Wireless communication connections do not require a physical medium and are not a connection relationship that limits the product structure. "Connection" and "connected" can both refer to a mechanical or physical connection relationship, that is, A and B being connected or connected can mean that there are fastening components (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0055] Unless otherwise defined, all technical terms used in the embodiments of this disclosure have the same meaning as commonly understood by one of ordinary skill in the art.

[0056] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0057] On the one hand, combined with Figures 1 to 5 As shown, this embodiment provides an electrical signal conversion device, which includes: a housing assembly 1, a first wiring assembly 2, a second wiring assembly 3, and a detection wiring assembly 4.

[0058] The first wiring assembly 2 includes a first plug-in terminal 21 and a first crimp terminal 22, the second wiring assembly 3 includes a second plug-in terminal 31 and a second crimp terminal 32, and the detection wiring assembly 4 includes an instrument connection terminal 41 and a third crimp terminal 42.

[0059] The first wiring assembly 2 is located on the first side 101 of the housing assembly 1, with the first plug-in end 21 located outside the housing assembly 1 and the first crimp end 22 located inside the housing assembly 1; the second wiring assembly 3 is located on the second side 102 of the housing assembly 1, with the second plug-in end 31 located outside the housing assembly 1 and the second crimp end 32 located inside the housing assembly 1; the detection wiring assembly 4 is located on the third side 103 of the housing assembly 1, with the instrument connection end 41 located outside the housing assembly 1 and the third crimp end 42 located inside the housing assembly 1; the first crimp end 22, the second crimp end 32 and the third crimp end 42 are electrically connected.

[0060] The electrical signal conversion device of this embodiment is suitable for measuring high-voltage circuits. The first wiring assembly 2 and the second wiring assembly 3 can be connected to the high-voltage circuit through the first plug-in terminal 21 and the second plug-in terminal 31, respectively. The first crimp terminal 22 of the first wiring assembly 2 and the second crimp terminal 32 of the second wiring assembly 3 are electrically connected in the housing assembly 1 to ensure that the high-voltage circuit remains unobstructed. The third crimp terminal 42 of the detection wiring assembly 4 is electrically connected to the first crimp terminal 22 and the second crimp terminal 32 in the housing assembly 1, respectively. The instrument connection terminal 41 of the detection wiring assembly 4 is connected to the measuring instrument, so that the current in the high-voltage circuit can be introduced into the measuring instrument to realize the detection and / or measurement of the high-voltage circuit.

[0061] In addition, the first plug-in terminal 21, the second plug-in terminal 31 and the instrument connection terminal 41 are located on the three sides of the housing assembly 1, which helps to improve the ease of operation and safety of the electrical signal conversion device.

[0062] In this embodiment, the first plug-in terminal 21 of the first wiring assembly 2 and the second plug-in terminal 31 of the second wiring assembly 3 serve as connection ports between the electrical signal conversion device and external devices, respectively, and are connected to external devices by plugging in, which has the advantages of convenient operation and simple connection and disconnection. The first crimp terminal 22, the second crimp terminal 32, and the third crimp terminal 42, which are internal connection structures, are respectively crimped by fastening screws, which has the advantages of high connection reliability.

[0063] Combination Figure 2 , 6 As shown, in some embodiments, the first plug-in terminal 21 is provided with a first male plug-in 211, which is matched and plugged into the second female plug-in 51 in the high voltage circuit to be tested.

[0064] The second connector 31 is provided with a first female connector 311, which is matched and plugged into the second male connector 61 in the high voltage circuit to be tested.

[0065] Male and female connectors are commonly used connectors in existing circuit structures, offering advantages such as convenient connection operation and high connection reliability. In the electrical signal conversion device of this embodiment, based on the structural characteristics of the high-voltage circuit, a first male connector 211 is arranged at the first connector 21, and a first female connector 311 is arranged at the second connector 31. This allows the electrical signal conversion device to be directly connected between the second female connector 51 and the second male connector 61 of the high-voltage circuit under test without damaging the high-voltage circuit structure. This reduces the operational difficulty of the electrical signal conversion device provided in this embodiment and helps improve detection efficiency.

[0066] In some possible implementations, the instrument connection terminal 41 is replaceable and can be adjusted and replaced according to different detection requirements and the connection requirements of different measuring instruments.

[0067] Combination Figure 6 As shown, in some embodiments, the high-voltage circuit under test includes a high-voltage device 5 and a high-voltage wiring harness 6. A second female connector 51 is located on the high-voltage device 5, and a second male connector 61 is located on the high-voltage wiring harness 6. The second female connector 51 and the second male connector 61 are matched and plugged in to realize the electrical connection between the high-voltage device 5 and the high-voltage wiring harness 6.

[0068] In this embodiment, the second female connector 51 is arranged on the high-voltage equipment 5, and the second male connector 61 is arranged on the high-voltage wiring harness 6. The electrical connection between the high-voltage equipment 5 and the high-voltage wiring harness 6 can be achieved through the connection of the second female connector 51 and the second male connector 61. Correspondingly, the first male connector 211 is arranged at the first connector end 21, and the first female connector 311 is arranged at the second connector end 31. This better adapts to the structure of the high-voltage circuit under test, eliminating the need for destructive modification of the circuit during testing. The connection of the electrical signal conversion device is convenient, and the operation is simple.

[0069] Combination Figure 2 , 5 As shown, in some embodiments, the first wiring assembly 2 further includes a first wire harness 23 and a first wire-passing structure 24.

[0070] The first plug-in end 21 and the first crimp end 22 are located at the two ends of the first wire harness 23, respectively. The first wire-passing structure 24 is located on the housing assembly 1. The first wire harness 23 passes through the first wire-passing structure 24, and at least a portion of the first wire harness 23 is located outside the housing assembly 1, so that the first plug-in end 21 can use the flexibility of the first wire harness 23 to adjust the plug-in position and / or plug-in direction.

[0071] In this embodiment of the electrical signal conversion device, considering that the second female connector 51 in the high-voltage circuit under test is usually fixed on the surface of the high-voltage equipment 5, and its position is fixed and difficult to plug in, the first wire harness 23 connected to the first connector 21 is extended so that the first connector 21 can make adaptive adjustments to the position and angle of the second female connector 51 by utilizing the flexibility of the first wire harness 23, thereby further reducing the difficulty of using the electrical signal conversion device.

[0072] Combination Figure 2 , 5 As shown, in some embodiments, the second wiring assembly 3 further includes a second wire harness 33 and a second wire-passing structure 34.

[0073] The second plug-in end 31 and the second crimp end 32 are located at the two ends of the second wire harness 33, the second wire guide structure 34 is located on the housing assembly 1, and the first wire harness 23 passes through the first wire guide structure 24; the second plug-in end 31 is fixedly disposed on the outer surface of the housing assembly 1.

[0074] In this embodiment, considering that the second male connector 61 in the high-voltage circuit under test is usually arranged at the end of the high-voltage harness 6 and its position is flexible, the second connector 31 is directly arranged on the outer surface of the housing assembly 1 and its position relative to the second male connector 61 is fixed. Thus, after the second connector 31 and the second male connector 61 are connected, the electrical signal conversion device can be used to limit and fix the connector structure, prevent the high-voltage harness 6 from shaking, ensure the connection reliability of the second connector 31 and the second male connector 61, and reduce safety hazards.

[0075] Among some possible implementations, refer to Figure 5 The second plug-in end 31 and the second wire-passing structure 34 are designed as an integral unit. The integral structure consisting of the second plug-in end 31 and the second wire-passing structure 34 is fixed to the surface of the housing assembly 1 by the second fastening screw 35.

[0076] Combination Figure 2 , 5 As shown, in some embodiments, the detection wiring assembly 4 includes a third wiring harness 43 and a third wire guide structure 44. The instrument connection end 41 and the third crimp end 42 are respectively located at the two ends of the third wiring harness 43. The third wire guide structure 44 is located on the housing assembly 1. The third wiring harness 43 passes through the third wire guide structure 44, and at least a portion of the third wiring harness 43 is located outside the housing assembly 1, so that the instrument connection end 41 can use the flexibility of the third wiring harness 43 to adjust the insertion position and / or insertion direction.

[0077] With the above arrangement, the instrument connection end 41 can be extended outward using the third wiring harness 43, which facilitates the connection between the electrical signal conversion device and the measuring instrument.

[0078] Combination Figures 1 to 5 As shown, in some embodiments, the housing assembly 1 is cuboid in shape, the first side 101 and the second side 102 are the two end faces of the housing assembly 1, and the third side 103 is one of the side faces of the housing assembly 1.

[0079] In the electrical signal conversion device of this embodiment, the housing component 1 is designed as a regular cuboid shape, which has good structural stability and can avoid unstable phenomena such as tilting of the housing component 1, thereby improving the ease of use of the electrical signal conversion device.

[0080] In addition, the housing component 1 is rectangular and has a regular structure, which facilitates the storage and transportation of the electrical signal conversion device in this embodiment.

[0081] In some possible implementations, the housing assembly 1 includes a housing 11 and a cover 12. The housing 11 has a receiving space that can accommodate structures such as a first crimping end 22, a second crimping end 32, and a third crimping end 42. The cover 12 is locked and fixed to the housing 11 by a first fastening screw 13.

[0082] Combination Figure 2 and Figure 5 As shown, in some embodiments, the electrical signal conversion device further includes a conversion component 7, which is located inside the housing component 1; the conversion component 7 is electrically connected to the first crimping end 22, the second crimping end 32 and the third crimping end 42 respectively.

[0083] With the above arrangement, the first crimping end 22, the second crimping end 32 and the third crimping end 42 can be crimped onto the adapter assembly 7 by fastening screws, ensuring that the three crimping ends can be connected stably and reliably.

[0084] Combination Figure 2 and Figure 5 As shown, in some embodiments, the adapter assembly 7 includes an insulating base 71 and two bridging copper busbars 72.

[0085] The insulating base 71 is located inside the housing assembly 1. Two bridging copper busbars 72 are respectively arranged on the insulating base 71. The live wire terminal in the first crimping end 22 and the live wire terminal in the second crimping end 32 are respectively crimped to the two ends of the same bridging copper busbar 72. The neutral wire terminal in the first crimping end 22 and the neutral wire terminal in the second crimping end 32 are respectively crimped to the two ends of another bridging copper busbar 72. The live wire terminal and the neutral wire terminal of the third crimping end 42 are respectively crimped to the two bridging copper busbars 72.

[0086] With the above arrangement, the first crimp terminal 22, the second crimp terminal 32 and the third crimp terminal 42 can be connected to a stable and reliable telecommunications connection.

[0087] Alternatively, the number of bridging copper busbars 72 can be three, with one bridging copper busbar 72 used to connect the live wire terminal, another bridging copper busbar 72 used to connect the neutral wire terminal, and the last bridging copper busbar used to connect the ground wire terminal.

[0088] Combination Figure 2 and Figure 5 As shown, in some embodiments, a fuse 73 is provided in the middle of the bridging copper busbar 72 connected to the live wire terminal. The fuse 73 arranged in the bridging copper busbar 72 can provide overload protection for the electrical signal conversion device.

[0089] On the other hand, this embodiment provides a high-voltage circuit detection method, which uses the electrical signal conversion device disclosed herein. The high-voltage circuit includes a high-voltage device 5 and a high-voltage wiring harness 6. The high-voltage device 5 is provided with a second female connector 51, and the high-voltage wiring harness 6 is provided with a second male connector 61 that is matched and plugged into the second female connector 51.

[0090] High-voltage circuit testing methods include:

[0091] Step S1: Disconnect the second female connector 51 and the second male connector 61.

[0092] Step S2: Connect the first plug-in end 21 to the second female plug-in component, and connect the second plug-in end 31 to the second male plug-in component 61.

[0093] Step S3: Electrically connect the instrument connection terminal 41 to the measuring instrument.

[0094] Step S4: Start the measuring instrument to perform the measurement.

[0095] The high-voltage circuit detection method in this embodiment uses the electrical signal detection device disclosed herein, and has all the beneficial technical effects of all embodiments herein.

[0096] The high-voltage circuit detection device of this embodiment does not require destructive dismantling of the high-voltage circuit. It only requires disconnecting the existing connector to switch to the second male connector 61 and the second female connector 51 in the high-voltage circuit for connection. It is simple and quick, and can realize not only static measurement but also dynamic measurement, with high safety.

[0097] It should be noted that in this article, "several" and "at least one" refer to one or more, while "multiple" and "at least two" refer to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0098] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0099] In the description of this specification, the references to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the embodiments or examples that are included in at least one embodiment or example of this disclosure.

[0100] The above description is merely an embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. An electrical signal conversion device, characterized in that, The electrical signal conversion device includes: a housing assembly (1), a first wiring assembly (2), a second wiring assembly (3), and a detection wiring assembly (4); The first wiring assembly (2) includes a first plug-in terminal (21) and a first crimp terminal (22), the second wiring assembly (3) includes a second plug-in terminal (31) and a second crimp terminal (32), and the detection wiring assembly (4) includes an instrument connection terminal (41) and a third crimp terminal (42). The first wiring assembly (2) is located on the first side (101) of the housing assembly (1), the first plug-in end (21) is located outside the housing assembly (1), and the first crimp end (22) is located inside the housing assembly (1); the second wiring assembly (3) is located on the second side (102) of the housing assembly (1), the second plug-in end (31) is located outside the housing assembly (1), and the second crimp end (32) is located inside the housing assembly (1); the detection wiring assembly (4) is located on the third side (103) of the housing assembly (1), the instrument connection end (41) is located outside the housing assembly (1), and the third crimp end (42) is located inside the housing assembly (1); the first crimp end (22), the second crimp end (32), and the third crimp end (42) are electrically connected.

2. The electrical signal conversion device according to claim 1, characterized in that, The first plug-in terminal (21) is provided with a first male plug-in component (211), which is matched and plugged into the second female plug-in component (51) in the high voltage circuit to be tested; The second plug-in terminal (31) is provided with a first female plug-in component (311), which is matched and plugged into the second male plug-in component (61) in the high voltage circuit to be tested.

3. The electrical signal conversion device according to claim 2, characterized in that, The high-voltage circuit under test includes a high-voltage device (5) and a high-voltage wiring harness (6). The second female connector (51) is located on the high-voltage device (5), and the second male connector (61) is located on the high-voltage wiring harness (6). The second female connector (51) and the second male connector (61) are matched and plugged in to realize the electrical connection between the high-voltage device (5) and the high-voltage wiring harness (6).

4. The electrical signal conversion device according to claim 3, characterized in that, The first wiring assembly (2) further includes a first wire harness (23) and a first wire-passing structure (24); The first plug-in end (21) and the first crimp end (22) are respectively located at both ends of the first wire harness (23), the first wire guide structure (24) is located on the housing assembly (1), the first wire harness (23) passes through the first wire guide structure (24), and at least a portion of the first wire harness (23) is located outside the housing assembly (1), so that the first plug-in end (21) can use the flexibility of the first wire harness (23) to adjust the plug-in position and / or plug-in direction.

5. The electrical signal conversion device according to claim 4, characterized in that, The second wiring assembly (3) further includes a second wire harness (33) and a second wire-passing structure (34); The second plug-in end (31) and the second crimp end (32) are located at the two ends of the second wire harness (33), the second wire guide structure (34) is located on the housing assembly (1), and the first wire harness (23) passes through the first wire guide structure (24); the second plug-in end (31) is fixedly disposed on the outer surface of the housing assembly (1).

6. The electrical signal conversion device according to claim 1, characterized in that, The housing assembly (1) is rectangular, the first side (101) and the second side (102) are the two end faces of the housing assembly (1), and the third side (103) is one of the side faces of the housing assembly (1).

7. The electrical signal conversion device according to claim 1, characterized in that, The electrical signal conversion device further includes a conversion component (7), which is located inside the housing assembly (1); the conversion component (7) is electrically connected to the first crimping end (22), the second crimping end (32) and the third crimping end (42) respectively.

8. The electrical signal conversion device according to claim 7, characterized in that, The adapter assembly (7) includes an insulating base (71) and two bridging copper busbars (72); The insulating base (71) is located inside the housing assembly (1), and the two bridging copper busbars (72) are respectively arranged on the insulating base (71). The live wire terminal in the first crimping end (22) and the live wire terminal in the second crimping end (32) are respectively crimped to the two ends of the same bridging copper busbar (72), and the neutral wire terminal in the first crimping end (22) and the neutral wire terminal in the second crimping end (32) are respectively crimped to the two ends of the other bridging copper busbar (72). The live wire terminal and the neutral wire terminal of the third crimp terminal (42) are respectively crimped onto the two bridging copper busbars (72).

9. The electrical signal conversion device according to claim 8, characterized in that, A fuse (73) is provided in the middle of the bridging copper busbar (72) connected to the live wire terminal.

10. A method for detecting high-voltage circuits, characterized in that, The electrical signal conversion device according to any one of claims 1 to 9, wherein the high-voltage circuit includes a high-voltage device (5) and a high-voltage wire harness (6), wherein the high-voltage device (5) is provided with a second female connector (51), and the high-voltage wire harness (6) is provided with a second male connector (61) that is matched and plugged into the second female connector (51); The high-voltage circuit detection method includes: Disconnect the second female connector (51) and the second male connector (61); Connect the first plug-in end (21) to the second female plug-in component, and connect the second plug-in end (31) to the second male plug-in component (61). Electrically connect the instrument connection terminal (41) to the measuring instrument; Start the measuring instrument to perform the measurement.

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