Wiring device of insulation resistance tester

Abstract

The utility model provides a wiring device of an insulation resistance tester in the technical field of insulation resistance testing. The wiring device comprises a magnetic ring C1, a magnetic ring C2, a resistor R1, a resistor R2, a switch K1, a switch K2, a high-voltage relay board J1, a high-voltage relay board J2, a connecting module and a high-voltage resistor group, after the resistor R1 is connected with the switch K1 in parallel, one end of the resistor R1 is connected with the magnetic ring C1, and the other end of the resistor R1 is connected with pins 1, 2, 3, 4 and 5 of the high-voltage relay board J1 and the high-voltage relay board J2; after the resistor R2 is connected with the switch K2 in parallel, one end of the resistor R2 is connected with the magnetic ring C2, and the other end of the resistor R2 is connected with pins 6 and 7 of the high-voltage relay board J1 and a pin 6 of the high-voltage relay board J2; pins 8, 9, 10, 11, 12, 13 and 14 of the high-voltage relay board J1 are connected with the connecting module; and pins 7, 8, 9, 10, 11 and 12 of the high-voltage relay board J2 are connected with the high-voltage resistor group. The utility model has the advantage that the wiring reliability of the insulation resistance tester is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of insulation resistance testing, in particular to a wiring device for an insulation resistance tester. Background Art

[0002] With the rapid growth of the new energy industry, the demand for battery modules is also increasing. The battery module consists of several series-parallel battery cells loaded in an aluminum shell. In order to ensure the insulation performance of the battery module, it is necessary to spray powder on the aluminum shell to form a covering film. After the spraying is completed, the thickness of the covering film needs to be measured. The thickness of the covering film is converted by measuring the insulation resistance of the aluminum shell with an insulation resistance tester.

[0003] However, the traditional insulation resistance tester has the following problems during wiring and use: 1. The insulation resistance tester needs to be wired through conductive foam (conductive foam), and the material of the conductive foam will affect the voltage boost. When the instantaneous voltage does not reach the preset value, burnt black spots will appear on the conductive foam; 2. No current limiting protection is set. When the probe is in a short-circuit state, it is impossible to determine whether it is connected, resulting in the inability to test; 3. When the probe is used in two or four channels, the connector line will interfere with the signal and affect the accuracy of the test data.

[0004] Therefore, how to provide an insulation resistance tester wiring device to improve the reliability of the insulation resistance tester wiring has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a wiring device for an insulation resistance tester, so as to improve the reliability of the wiring of the insulation resistance tester.

[0006] The utility model is implemented as follows: an insulation resistance tester wiring device, including a magnetic ring C1, a magnetic ring C2, a resistor R1, a resistor R2, a switch K1, a switch K2, a high-voltage relay board J1, a high-voltage relay board J2, a connection module and a high-voltage resistor group;

[0007] After the resistor R1 is connected in parallel with the switch K1, one end is connected to the magnetic ring C1, and the other end is connected to the pins 1, 2, 3, 4, and 5 of the high-voltage relay board J1 and the high-voltage relay board J2; after the resistor R2 is connected in parallel with the switch K2, one end is connected to the magnetic ring C2, and the other end is connected to the pins 6 and 7 of the high-voltage relay board J1 and the pin 6 of the high-voltage relay board J2; pins 8, 9, 10, 11, 12, 13, and 14 of the high-voltage relay board J1 are connected to the connection module; pins 7, 8, 9, 10, 11, and 12 of the high-voltage relay board J2 are connected to the high-voltage resistor group.

[0008] Further, the connection module includes a conductive foam P1, a conductive foam P2, a conductive foam P3, a conductive foam P4, a conductive foam P5, a resistor R5, a resistor R16, a bottom probe T1 and a bottom probe T2;

[0009] Pins 8, 9, 10, 11, and 12 of the high-voltage relay board J1 are respectively connected to conductive foam P1, conductive foam P2, conductive foam P3, conductive foam P4, and conductive foam P5; one end of the resistor R5 is connected to the bottom probe T1, and the other end is connected to pin 13 of the high-voltage relay board J1; one end of the resistor R16 is connected to the bottom probe T2, and the other end is connected to pin 14 of the high-voltage relay board J1.

[0010] Further, the high-voltage resistor group includes a high-voltage resistor R6, a high-voltage resistor R7, a high-voltage resistor R8, a high-voltage resistor R9, a high-voltage resistor R10, a high-voltage resistor R11, a high-voltage resistor R12, a high-voltage resistor R13, a high-voltage resistor R14 and a high-voltage resistor R15;

[0011] Pins 7, 8, 9, 10, and 11 of the high-voltage relay board J2 are respectively connected to the high-voltage resistor R6, the high-voltage resistor R8, the high-voltage resistor R10, the high-voltage resistor R12, and the high-voltage resistor R14; pin 12 of the high-voltage relay board J2 is connected to the high-voltage resistor R7, the high-voltage resistor R9, the high-voltage resistor R11, the high-voltage resistor R13, and the high-voltage resistor R15; the high-voltage resistor R6, the high-voltage resistor R8, the high-voltage resistor R10, the high-voltage resistor R12, and the high-voltage resistor R14 are respectively connected to the high-voltage resistor R7, the high-voltage resistor R9, the high-voltage resistor R11, the high-voltage resistor R13, and the high-voltage resistor R15.

[0012] The advantages of the utility model are:

[0013] 1. By setting the resistor R1 and switch K1 connected in parallel, and the resistor R2 and switch K2 connected in parallel, when the material of the conductive foam can withstand the high voltage state, the switch K1 and the switch K2 are disconnected to connect the resistor R1 and the resistor R2. When the material of the conductive foam cannot withstand the high voltage state, the switch K1 and the switch K2 are turned on to short-circuit the resistor R1 and the resistor R2, so as to avoid the conductive foam from having burnt black spots when the instantaneous voltage fails to reach the predetermined value; by setting the resistor R5 and the resistor R16 to provide current limiting protection for the bottom probe T1 and the bottom probe T2 respectively, the connection state of the bottom probe T1 and the bottom probe T2 with the aluminum shell can be detected; by setting the magnetic ring C1 and the magnetic ring C2 respectively used to connect the positive and negative poles of the insulation resistance tester, the signal interference of the insulation resistance tester during high voltage testing is effectively avoided, and finally the reliability of the wiring of the insulation resistance tester is greatly improved.

[0014] 2. By setting up a high-voltage resistor group, the accurate voltage value can be read according to the high-voltage resistors with different resistance values, effectively avoiding misjudgment of the insulation resistance tester. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0016] Figure 1 The utility model discloses a circuit diagram of a wiring device of an insulation resistance tester. DETAILED DESCRIPTION

[0017] The embodiment of the utility model provides an insulation resistance tester wiring device, which solves the technical problems in the prior art that the insulation resistance tester needs to be wired through conductive foam, and the material of the conductive foam will affect the voltage boost. When the instantaneous voltage does not reach a predetermined value, burnt black spots will appear; no current limiting protection is set, and when the probe is in a short-circuit state, it is impossible to determine whether it is connected; when the probe is used in two channels or four channels, the connector line will interfere with the signal and affect the accuracy of the test data, thereby achieving a technical effect of greatly improving the reliability of the insulation resistance tester wiring.

[0018] The technical solution in the embodiment of the utility model is to solve the above problems, and the overall idea is as follows: a resistor R1 and a switch K1 are connected in parallel, and a resistor R2 and a switch K2 are connected in parallel. The switch K1 and the switch K2 are turned on and off based on the material of the conductive foam to avoid burnt black spots on the conductive foam when the instantaneous voltage does not reach the predetermined value; resistors R5 and R16 are set to provide current limiting protection, and the connection status of the bottom probe T1 and the bottom probe T2 with the aluminum shell can be detected; magnetic rings C1 and C2 are set to effectively avoid signal interference when the insulation resistance tester performs high-voltage testing, so as to improve the reliability of the wiring of the insulation resistance tester.

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Please refer to Figure 1As shown, a preferred embodiment of the wiring device of an insulation resistance tester of the utility model comprises a magnetic ring C1, a magnetic ring C2, a resistor R1, a resistor R2, a switch K1, a switch K2, a high-voltage relay board J1, a high-voltage relay board J2, a connection module and a high-voltage resistor group; the magnetic ring C1 and the magnetic ring C2 are both used to shield signal interference; the switch K1 is used to connect or short-circuit the resistor R1; the switch K2 is used to connect or short-circuit the resistor R2; the high-voltage relay board J1 has 7 channels, that is, pins 1, 2, 3, 4, 5, 6, and 7 correspond to pins 8, 9, 10, 11, 12, 13, and 14 respectively; the high-voltage relay board J2 has 6 channels, that is, pins 1, 2, 3, 4, 5, and 6 correspond to pins 7, 8, 9, 10, 11, and 12 respectively;

[0021] After the resistor R1 is connected in parallel with the switch K1, one end is connected to the magnetic ring C1, and the other end is connected to the pins 1, 2, 3, 4, and 5 of the high-voltage relay board J1 and the high-voltage relay board J2; after the resistor R2 is connected in parallel with the switch K2, one end is connected to the magnetic ring C2, and the other end is connected to the pins 6 and 7 of the high-voltage relay board J1 and the pin 6 of the high-voltage relay board J2; pins 8, 9, 10, 11, 12, 13, and 14 of the high-voltage relay board J1 are connected to the connection module; pins 7, 8, 9, 10, 11, and 12 of the high-voltage relay board J2 are connected to the high-voltage resistor group.

[0022] The connection module includes a conductive foam P1, a conductive foam P2, a conductive foam P3, a conductive foam P4, a conductive foam P5, a resistor R5, a resistor R16, a bottom probe T1 and a bottom probe T2;

[0023] Pins 8, 9, 10, 11, and 12 of the high-voltage relay board J1 are respectively connected to conductive foam P1, conductive foam P2, conductive foam P3, conductive foam P4, and conductive foam P5; one end of the resistor R5 is connected to the bottom probe T1, and the other end is connected to pin 13 of the high-voltage relay board J1; one end of the resistor R16 is connected to the bottom probe T2, and the other end is connected to pin 14 of the high-voltage relay board J1.

[0024] The high-voltage resistor group includes a high-voltage resistor R6, a high-voltage resistor R7, a high-voltage resistor R8, a high-voltage resistor R9, a high-voltage resistor R10, a high-voltage resistor R11, a high-voltage resistor R12, a high-voltage resistor R13, a high-voltage resistor R14 and a high-voltage resistor R15; the resistance values ​​of the high-voltage resistors R6, R8, R10, R12 and R14 are different from those of the high-voltage resistors R7, R9, R11, R13 and R15;

[0025] Pins 7, 8, 9, 10, and 11 of the high-voltage relay board J2 are respectively connected to the high-voltage resistor R6, the high-voltage resistor R8, the high-voltage resistor R10, the high-voltage resistor R12, and the high-voltage resistor R14; pin 12 of the high-voltage relay board J2 is connected to the high-voltage resistor R7, the high-voltage resistor R9, the high-voltage resistor R11, the high-voltage resistor R13, and the high-voltage resistor R15; the high-voltage resistor R6, the high-voltage resistor R8, the high-voltage resistor R10, the high-voltage resistor R12, and the high-voltage resistor R14 are respectively connected to the high-voltage resistor R7, the high-voltage resistor R9, the high-voltage resistor R11, the high-voltage resistor R13, and the high-voltage resistor R15.

[0026] It also includes an MCU, which is connected to the switch K1, switch K2, high-voltage relay board J1 and high-voltage relay board J2 respectively, and is used to turn on and off the switch K1 and switch K2, and control the channels selected by the high-voltage relay board J1 and the high-voltage relay board J2.

[0027] Working principle of this utility model:

[0028] The magnetic ring C1 is connected to the positive pole of the insulation resistance tester, and the magnetic ring C2 is connected to the negative pole of the insulation resistance tester. When the conductive foam P1, conductive foam P2, conductive foam P3, conductive foam P4 and conductive foam P5 cannot withstand the high voltage state, the switch K1 and the switch K2 are turned on, and the bottom probe T1 and the bottom probe T2 are connected to the aluminum shell to establish a connection path between the insulation resistance tester and the aluminum shell, so as to test the thickness of the film covering the surface of the aluminum shell through the insulation resistance tester.

[0029] In summary, the advantages of the present invention are:

[0030] 1. By setting the resistor R1 and switch K1 connected in parallel, and the resistor R2 and switch K2 connected in parallel, when the material of the conductive foam can withstand the high voltage state, the switch K1 and the switch K2 are disconnected to connect the resistor R1 and the resistor R2. When the material of the conductive foam cannot withstand the high voltage state, the switch K1 and the switch K2 are turned on to short-circuit the resistor R1 and the resistor R2, so as to avoid the conductive foam from having burnt black spots when the instantaneous voltage fails to reach the predetermined value; by setting the resistor R5 and the resistor R16 to provide current limiting protection for the bottom probe T1 and the bottom probe T2 respectively, the connection state of the bottom probe T1 and the bottom probe T2 with the aluminum shell can be detected; by setting the magnetic ring C1 and the magnetic ring C2 respectively used to connect the positive and negative poles of the insulation resistance tester, the signal interference of the insulation resistance tester during high voltage testing is effectively avoided, and finally the reliability of the wiring of the insulation resistance tester is greatly improved.

[0031] 2. By setting up a high-voltage resistor group, the accurate voltage value can be read according to the high-voltage resistors with different resistance values, effectively avoiding misjudgment of the insulation resistance tester.

[0032] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An insulation resistance tester wiring device, characterized in that: It includes a magnetic ring C1, a magnetic ring C2, a resistor R1, a resistor R2, a switch K1, a switch K2, a high-voltage relay board J1, a high-voltage relay board J2, a connection module and a high-voltage resistor group; After the resistor R1 is connected in parallel with the switch K1, one end is connected to the magnetic ring C1, and the other end is connected to the pins 1, 2, 3, 4, and 5 of the high-voltage relay board J1 and the high-voltage relay board J2; after the resistor R2 is connected in parallel with the switch K2, one end is connected to the magnetic ring C2, and the other end is connected to the pins 6 and 7 of the high-voltage relay board J1 and the pin 6 of the high-voltage relay board J2; pins 8, 9, 10, 11, 12, 13, and 14 of the high-voltage relay board J1 are connected to the connection module; pins 7, 8, 9, 10, 11, and 12 of the high-voltage relay board J2 are connected to the high-voltage resistor group.

2. The wiring device for an insulation resistance tester according to claim 1, characterized in that: The connection module includes a conductive foam P1, a conductive foam P2, a conductive foam P3, a conductive foam P4, a conductive foam P5, a resistor R5, a resistor R16, a bottom probe T1 and a bottom probe T2; Pins 8, 9, 10, 11, and 12 of the high-voltage relay board J1 are respectively connected to conductive foam P1, conductive foam P2, conductive foam P3, conductive foam P4, and conductive foam P5; one end of the resistor R5 is connected to the bottom probe T1, and the other end is connected to pin 13 of the high-voltage relay board J1; one end of the resistor R16 is connected to the bottom probe T2, and the other end is connected to pin 14 of the high-voltage relay board J1.

3. The wiring device for an insulation resistance tester according to claim 1, characterized in that: The high-voltage resistor group includes a high-voltage resistor R6, a high-voltage resistor R7, a high-voltage resistor R8, a high-voltage resistor R9, a high-voltage resistor R10, a high-voltage resistor R11, a high-voltage resistor R12, a high-voltage resistor R13, a high-voltage resistor R14 and a high-voltage resistor R15; Pins 7, 8, 9, 10, and 11 of the high-voltage relay board J2 are respectively connected to the high-voltage resistor R6, the high-voltage resistor R8, the high-voltage resistor R10, the high-voltage resistor R12, and the high-voltage resistor R14; pin 12 of the high-voltage relay board J2 is connected to the high-voltage resistor R7, the high-voltage resistor R9, the high-voltage resistor R11, the high-voltage resistor R13, and the high-voltage resistor R15; the high-voltage resistor R6, the high-voltage resistor R8, the high-voltage resistor R10, the high-voltage resistor R12, and the high-voltage resistor R14 are respectively connected to the high-voltage resistor R7, the high-voltage resistor R9, the high-voltage resistor R11, the high-voltage resistor R13, and the high-voltage resistor R15.

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