CN114924106A - Measuring wiring device for testing insulation resistance voltage for electric vehicle wading test - Google Patents

Abstract

The invention relates to a measuring wiring device for testing insulation resistance voltage for electric vehicle wading test, comprising a high-voltage connecting wire harness, a casing and a pin terminal socket. The high-voltage connecting wire harness comprises a wiring harness body and two plug connectors; 3 wires leading out to the pin terminal socket; two plug connectors are directly plugged into the DCDC port and connected to the high-voltage wiring harness disconnected from the high-voltage distribution box and the DCDC; The plug connector is connected with the end face of the casing, the middle fixing structure of the wire harness body is fixed with the end face, and the other plug connector protrudes from the end face. When voltage measurement is required, connect this wiring device in series to the high-voltage wiring harness between the high-voltage distribution box of the electric vehicle and the DCDC, and directly insert the pins of the multimeter into the corresponding terminal sockets to measure the voltage. The device is directly removed to restore the high-voltage wiring harness of the original vehicle; the process of repeatedly removing the bolts of the high-voltage distribution box is omitted.

Description

Measuring wiring device for testing insulation resistance voltage for electric vehicle wading test

technical field

The invention belongs to the technical field of electric vehicles, and in particular relates to a wiring device for measuring insulation resistance and voltage of an electric vehicle wading test.

Background technique

According to the water wading test specification, the water wading test has a total of 3 working conditions. The insulation resistance of the whole vehicle needs to be measured within 30 minutes before the test of each working condition, within 30 minutes after the test, and 24 hours after the test, for a total of 9 times. Measurement.

Usually, when testing the insulation resistance voltage, it is necessary to disassemble the upper cover of the high-voltage distribution box. There are 24 bolts around the upper cover to fasten them. Not only does the dismantling repeat work, but it is easy to cause the bolt caps to slip or excessive torque after repeated disassembly. The large rear thread slide wire makes the upper cover unable to be disassembled and affects the test process. At the same time, after the water wading test, there are a lot of water traces in the engine room. It is extremely dangerous to test under the high-voltage leakage. Moreover, after opening the upper cover of the high-voltage distribution box, the high-voltage interlock switch will be disconnected, so that the whole vehicle cannot be used. When high-voltage power is applied, the interlock switch needs to be manually and forcibly closed with the strip, which has the risk of electric leakage.

To sum up, how to solve the problem of convenience and safety during the test has become an urgent problem to be solved. Based on this, it is urgent to develop a measurement wiring device for testing the insulation resistance voltage for electric vehicle wading test.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a measuring wiring device for testing insulation resistance voltage for electric vehicle wading test, so as to solve the problem that the voltage measurement can be performed without repeatedly disassembling the high-voltage distribution box in the electric vehicle wading test.

The purpose of this invention is to realize through the following technical solutions:

A measuring wiring device for testing insulation resistance voltage for electric vehicle wading test comprises a high-voltage connecting wire harness 1 , a casing 2 and a pin terminal socket 3 arranged on the top of the casing 2 .

The high-voltage connection harness 1 includes a harness body and two plug connectors; the middle of the harness body is provided with three wires leading out to the pin terminal socket 3, which can be connected to the pin terminal socket 3;

The two plug connectors are located at both ends of the wire harness body and are standard plug connectors for high-voltage wire harnesses. Among them, the plug connector I101 can be directly plugged into the DCDC port, and the plug connector II102 is connected to the high-voltage distribution box. The high-voltage wire harness disconnected from the DCDC upper; the middle of the harness body is also provided with a fixing structure;

The two ends of the housing 2 are provided with housing end faces 4 and 5; the wire harness body passes through the housing end faces 4 and 5, and its plug connector II102 is connected to the housing end face 4, and the central fixing structure of the wire harness body is connected to the end face 5. Fixed, the plug connector I101 protrudes outward from the end face 5 .

Further, among the three wires, wire I 103, wire II 104 and wire III 105 are respectively a positive wire, a negative wire and a ground wire, standing on the wire harness body.

Further, the casing 2 has a square tubular structure and is made of aluminum alloy.

Further, the length of the casing 2 is 155mm, the width is 105mm, and the height is 55mm.

Further, the outside of the casing 2 is wrapped with insulating tape.

Further, the end face 4 and the end face 5 of the casing are fixed to the casing 2 by bolts.

Further, the plug connector II 102 is connected to the end surface 4 of the housing through bolts, and the fixing structure in the middle of the wire harness body is fixed to the end surface 5 through bolts.

Further, the end face 4 and the end face 5 of the casing are respectively provided with positioning holes.

Further, the pin terminal sockets 3 are three 2mm multimeter pin-specific terminal sockets.

Further, the three terminal sockets are red terminal socket, green terminal socket and yellow terminal socket respectively. The red terminal socket is connected with the high voltage connecting wire harness 1 wire I103, which is the positive pole, and the green terminal socket is connected with the high voltage connecting wire harness 1 wire II104, which is The negative pole, the yellow terminal socket is connected to the wire III105 of the high-voltage connecting harness 1, which is grounded.

Compared with the prior art, the beneficial effects of the present invention are:

The measuring wiring device for testing the insulation resistance voltage for the electric vehicle wading test of the invention has a simple structure. When the voltage measurement needs to be performed, the wiring device is connected in series to the high-voltage wiring harness between the high-voltage distribution box of the electric vehicle and the DCDC, which can directly Insert the pins of the multimeter into the corresponding terminal sockets to measure the voltage. After the measurement is completed, the device is directly removed to restore the high-voltage wiring harness of the original vehicle; the use of this device eliminates the need to repeatedly remove the bolts of the high-voltage distribution box during the original measurement. The process not only avoids the danger of disassembling the high-voltage distribution box, but also increases the convenience of work.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic diagram of the overall structure of the measuring wiring device for testing the insulation resistance voltage for the electric vehicle wading test;

Fig. 2 is a structural schematic diagram of the casing, the pin terminal socket, the end face and the end face of the casing;

Figure 3 is a schematic diagram of the internal structure of the measuring wiring device for testing the insulation resistance voltage for the electric vehicle wading test.

Figure 1, 1. High voltage connection harness 2. Housing 3. Pin terminal socket 4. Housing end face 5. End face 101. Plug connector Ⅰ 102. Plug connector Ⅱ 103. Wire Ⅰ 104. Wire Ⅱ 105. Wire Ⅲ.

Detailed ways

Below in conjunction with embodiment, the present invention is further described:

As shown in FIG. 1 , the wiring device for measuring insulation resistance voltage for electric vehicle wading test of the present invention includes a high-voltage connection harness 1 , a housing 2 and a pin terminal socket 3 .

The high-voltage connection harness 1 includes a harness body and two plug connectors.

The middle of the wire harness body is provided with three wires leading out to the pin terminal socket 3. The wire I103, the wire II104 and the wire III105 are the positive wire, the negative wire and the ground wire respectively, standing on the wire harness body.

The two plug connectors are located at the two ends of the wire harness body, and are standard plug connectors for high-voltage wire harnesses. Among them, the plug connector I101 can be directly plugged into the DCDC port, and the plug connector II102 is connected to the high-voltage power distribution box. The high-voltage wire harness disconnected from the DCDC superior. The middle of the wire harness body is also provided with a fixing structure.

The casing 2 has a square tubular structure, and is made of aluminum alloy to prevent accidental ignition of the wiring harness inside the device. The dimensions are: length 155mm, width 105mm, and height 55mm.

Both ends of the casing 2 are provided with casing end faces 4 and 5 , and the casing end faces 4 and end faces 5 are fixed to the casing 2 by bolts. The wire harness body passes through the end face 4 and the end face 5 of the casing, and the plug connector II 102 is connected to the end face 4 of the casing by bolts.

The end face 4 and end face 5 of the casing are respectively provided with positioning holes to prevent the welding point of the wire harness from accidentally contacting the casing 2 after the inner wire harness body is shaken and displaced, resulting in the danger of electric leakage.

The pin terminal socket 3 is three special terminal sockets for 2mm multimeter pins, which are arranged on the top of the housing 2 and are respectively a red terminal socket, a green terminal socket and a yellow terminal socket. The red terminal socket and the high-voltage connection harness 1 wire I103 The connection is the positive pole, the green terminal socket is connected to the wire II 104 of the high voltage connection harness 1, and it is the negative pole, and the yellow terminal socket is connected to the wire III 105 of the high voltage connection harness 1, which is the ground.

The measuring wiring device for testing the insulation resistance voltage for the electric vehicle wading test is an integral structure. If you want to prevent the risk of accidental conduction of the casing 2, you can wrap the metal casing with insulating tape during actual operation.

Example 1

A measuring wiring device for testing insulation resistance voltage for electric vehicle wading test, comprising a high-voltage connecting wire harness 1 , a housing 2 and a pin terminal socket 3 .

The high-voltage connection harness 1 includes a harness body and two plug connectors. There are three wires leading out to the pin terminal socket 3 in the middle of the wire harness body. The wire I103, the wire II104 and the wire III105 are the positive wire, the negative wire and the ground wire respectively, standing on the wire harness body. The two plug connectors are located at both ends of the wire harness body and are standard plug connectors for high-voltage wire harnesses. Among them, the plug connector I101 can be directly plugged into the DCDC port, and the plug connector II102 is connected to the high-voltage distribution box and the high-voltage wiring harness disconnected from the DCDC. The middle of the wire harness body is also provided with a fixing structure.

The casing 2 is a square tubular structure, made of aluminum alloy, and the casing 2 is wrapped with insulating tape. The shell 2 is 155mm long, 105mm wide, and 55mm high. Both ends are provided with shell end faces 4 and 5. The shell end faces 4 and 5 are fixed to the shell 2 by bolts. The wire harness body passes through the end face 4 and the end face 5 of the casing, and the plug connector II 102 is connected to the end face 4 of the casing by bolts. The end face 4 and the end face 5 of the casing are respectively provided with positioning holes.

The pin terminal socket 3 is three special terminal sockets for 2mm multimeter pins, which are arranged on the top of the housing 2 and are respectively a red terminal socket, a green terminal socket and a yellow terminal socket. The red terminal socket and the high-voltage connection harness 1 wire I103 The connection is the positive pole, the green terminal socket is connected to the wire II 104 of the high voltage connection harness 1, and it is the negative pole, and the yellow terminal socket is connected to the wire III 105 of the high voltage connection harness 1, which is the ground.

When the test requires voltage measurement, it is not necessary to disassemble the high-voltage distribution box, and connect the plug connector II102 to the high-voltage wiring harness between the high-voltage distribution box of the electric vehicle and the DCDC, so that the measurement wiring of the insulation resistance voltage for the electric vehicle wading test is used. The device is connected in series with the high voltage wiring harness. After starting the vehicle, you can directly insert the pins of the multimeter into the corresponding terminal sockets to measure the voltage. After the measurement is completed, the device can be removed directly and the high-voltage wiring harness of the original vehicle can be restored. The use of this device eliminates the need to repeat the process of disassembling the bolts of the high-voltage distribution box during the original measurement, which not only avoids the danger of disassembling the high-voltage distribution box, but also increases the convenience of work. the purpose of the device.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (10)

1. A measuring wiring device for testing insulation resistance voltage for electric vehicle wading test, characterized in that: comprising a high-voltage connection harness (1), a housing (2) and a pin terminal socket arranged on the top of the housing (2) (3). The high-voltage connection harness (1) includes a harness body and two plug connectors; the middle of the harness body is provided with three wires leading out to the pin terminal socket (3), which can be connected to the pin terminal socket (3); The two plug connectors are located at both ends of the wire harness body and are standard plug connectors for high-voltage wire harnesses. Among them, the plug connector I (101) can be directly plugged into the DCDC port, and the plug connector II (102) is connected to the high-voltage power distribution box and the terminal. On the high-voltage wiring harness disconnected by the DCDC; a fixed structure is also provided in the middle of the wiring harness body; Both ends of the casing (2) are provided with casing end faces (4) and end faces (5); the wire harness body passes through the casing end faces (4) and the end faces (5), and its plug connector II (102) is connected to the casing The body end faces (4) are connected, the middle fixing structure of the wire harness body is fixed with the end face (5), and the plug connector I (101) protrudes outward from the end face (5). 2. The measuring wiring device for testing insulation resistance voltage for electric vehicle wading test according to claim 1, characterized in that: among the 3 wires, wire I (103), wire II (104) and wire III (105) are the positive wire, the negative wire and the ground wire respectively, standing on the wire harness body. 3 . The measuring wiring device for testing insulation resistance voltage for electric vehicle wading test according to claim 1 , wherein the casing ( 2 ) has a square tubular structure and is made of aluminum alloy. 4 . 4 . The measuring wiring device for testing insulation resistance voltage for electric vehicle wading test according to claim 3 , wherein the housing ( 2 ) has a length of 155 mm, a width of 105 mm and a height of 55 mm. 5 . 5 . The measuring wiring device for testing insulation resistance voltage for electric vehicle wading test according to claim 1 , characterized in that: the outside of the casing ( 2 ) is wrapped with insulating tape. 6 . 6. The measuring wiring device for testing insulation resistance voltage for electric vehicle wading test according to claim 1, characterized in that: the end face (4) and the end face (5) of the casing are connected to the casing (2) through bolts. )fixed. 7. A measuring wiring device for testing insulation resistance voltage for electric vehicle wading test according to claim 1, characterized in that: the plug connector II (102) is connected with the end face (4) of the housing through bolts, and the wiring harness The fixing structure in the middle of the body is fixed with the end surface (5) by bolts. 8 . The measuring wiring device for testing insulation resistance voltage for electric vehicle wading test according to claim 1 , wherein positioning holes are respectively punched on the end face (4) and the end face (5) of the casing. 9 . 9 . The measuring wiring device for testing insulation resistance voltage for electric vehicle wading test according to claim 1 , wherein the pin terminal sockets ( 3 ) are three special terminal sockets for 2mm multimeter pins. 10 . 10. A measuring wiring device for testing insulation resistance voltage for electric vehicle wading test according to claim 9, characterized in that: the three terminal sockets are respectively red terminal sockets, green terminal sockets and yellow terminal sockets, and the red terminal sockets are respectively The socket is connected to the wire I (103) of the high-voltage connection harness (1), which is the positive pole. The green terminal socket is connected to the wire II (104) of the high-voltage connection harness (1), which is the negative pole. The yellow terminal socket is connected to the high-voltage connection harness (1). Wire III (105) is connected to ground.

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