Method and system for testing waterproof performance of vehicle connector

Abstract

The invention relates to a vehicle connector waterproof performance test method and system, and the method comprises the following steps: enabling a connector to be connected with a power supply, placing the connector in a waterproof test device, carrying out the waterproof test, and calculating the voltage drop of each terminal of the connector; and if the voltage drop of each terminal of the plug-in connector is greater than the first set voltage drop, the waterproof performance of the plug-in connector does not meet the requirement. The waterproof performance of the plug-in connector in the using process is tested by simulating the electrified heating and water spraying cooling process of the plug-in connector, the waterproof performance of the plug-in connector under the working condition is truly reflected, and the problem that in the prior art, the waterproof performance of the plug-in connector can not be tested by simulating the water spraying or spraying working condition under the non-working state is solved. The technical problems that the waterproof performance of an actual vehicle connector in a working condition cannot be reflected, the water inlet fault of the connector can cause the error reporting of a vehicle combination instrument, the short circuit and even spontaneous combustion of a circuit, and the driving safety is influenced are solved.

Description

Technical Field

[0001] This application relates to the field of automotive component testing technology, specifically to a method and system for testing the waterproof performance of automotive connectors. Background Technology

[0002] With the continuous updates and iterations of the automotive industry, in-vehicle electronic systems are becoming increasingly complex. As a key component connecting wiring harnesses and electrical parts, the waterproof performance of connectors directly affects the operational reliability and driving safety of the entire vehicle.

[0003] In related technologies, the waterproof performance test of connectors is generally conducted by simulating water spray or spray conditions in a non-working state. The waterproof rating is evaluated by measuring parameters such as insulation resistance and leakage current. However, the actual working conditions of automotive connectors are complex. During vehicle operation, connectors generate heat due to power. If they are exposed to rain or splashes when the ambient temperature changes or they stop working, water ingress may occur, leading to errors in the vehicle's instrument cluster, short circuits, or even spontaneous combustion, affecting driving safety.

[0004] Therefore, it is necessary to design a test method for the waterproof performance of automotive connectors to overcome the above problems. Summary of the Invention

[0005] This application provides a method and system for testing the waterproof performance of automotive connectors, which can solve the technical problem that in related technologies, the waterproof performance test of connectors simulates water spraying or spraying conditions in a non-working state, which cannot reflect the actual waterproof performance of automotive connectors under working conditions. Water ingress into connectors can lead to errors in the vehicle's instrument cluster, short circuits, or even spontaneous combustion, affecting driving safety.

[0006] In a first aspect, embodiments of this application provide a method for testing the waterproof performance of automotive connectors, which includes the following steps: Connect the connector to a power source and place it in a waterproof testing device for waterproof testing. Calculate the voltage drop at each terminal of the connector. If the voltage drop at each terminal of the connector is greater than the first set voltage drop, the waterproof performance of the connector does not meet the requirements.

[0007] In conjunction with the first aspect, in one embodiment, the method for testing the waterproof performance of automotive connectors includes the following steps: If the voltage drop of each terminal of the connector is less than or equal to the first set voltage drop, then connect the connector to a megohmmeter, apply the first set voltage between adjacent terminals of the connector, and record the insulation resistance value between each terminal of the connector. If the insulation resistance between the terminals of the connector is less than the first set resistance, the waterproof performance of the connector does not meet the requirements.

[0008] In conjunction with the first aspect, in one embodiment, the method for testing the waterproof performance of automotive connectors includes the following steps: If the insulation resistance between each terminal of the connector is greater than or equal to the first set resistance, the connector is placed in a constant temperature and humidity test chamber and connected to a leakage current tester after a set time to record the leakage current between adjacent terminals of the connector. If the leakage current between two adjacent terminals of the connector is less than the first set current, the waterproof performance of the connector meets the requirements.

[0009] In conjunction with the first aspect, in one embodiment, the method for testing the waterproof performance of automotive connectors further includes: If the voltage drop of each terminal of the connector is less than or equal to the first set voltage drop, then connect the connector to a megohmmeter, apply the first set voltage between the terminals and the sheath of the connector, and record the insulation resistance value between the terminals and the sheath of the connector. If the insulation resistance between the terminals and the sheath of the connector is less than the first set resistance, the waterproof performance of the connector does not meet the requirements.

[0010] In conjunction with the first aspect, in one embodiment, the step of connecting the connector to a power source and placing it in a waterproof testing apparatus for waterproof testing, and calculating the voltage drop at each terminal of the connector, includes: Test the resistance between the ends of the wires connected to the two ends of the connector and the measurement point on the wire. ; Connect the connector to a power source and connect a multimeter to the measuring points on both ends of the connector via test leads. Continuously test the connector within the waterproof testing device for a first set time and record the voltage values ​​at both ends of the connector. ; After the connector has been left to stand for the second set time, use a multimeter to test the resistance between the measuring points on both ends of the connector. ; Based on resistance value Voltage value and resistance value Calculate the voltage drop at each terminal of the connector.

[0011] In conjunction with the first aspect, in one embodiment, the resistance value between the wire ends connected to both ends of the test connector and the wire measurement point is... ,include: Connect the positive and negative terminals of a multimeter to both ends of a 2L length of wire. Use the multimeter to measure the resistance of the wire; this resistance value is the resistance of the wire. .

[0012] In conjunction with the first aspect, in one embodiment, while the connector is left to stand for a second predetermined time, a multimeter is used to test the resistance between the measuring points of the wires at both ends of the connector. Following that, it also includes: Remove the connector from the waterproof test apparatus, wipe the surface of the connector dry, open the mated connector, and observe the color change of the color developer inside the connector and on the terminals.

[0013] In conjunction with the first aspect, in one embodiment, prior to the continuous testing of the connector within the waterproof testing apparatus for the first predetermined time period, the following steps are included: Rivet the terminals of the connector to the appropriate wires and install the sealing plug.

[0014] In conjunction with the first aspect, in one embodiment, prior to the continuous testing of the connector within the waterproof testing apparatus for the first predetermined time period, the method further includes: Wire measuring points are set on the wires connected at both ends of the connector, and the distance between the wire measuring point and the wire head on the side closest to the connector is L; Connect the test lead to the lead measurement point and seal the lead measurement point with double-arm heat shrink tubing.

[0015] Secondly, embodiments of this application provide a testing system for the above-described method for testing the waterproof performance of automotive connectors, comprising: A waterproof testing device, wherein both ends of the waterproof testing device are provided with wires, each segment of the wire is provided with a wire measuring point, and the waterproof testing device is used to hold a connector; A power source, the two ends of which are connected to the wires at both ends of the waterproof testing device; A multimeter, the two ends of which are connected to the wires at both ends of the waterproof testing device.

[0016] The beneficial effects of the technical solutions provided in this application include: By simulating the power-on heating and water-cooling process of the connector, the waterproof performance of the connector during use is tested, which truly reflects the waterproof performance of the connector under working conditions. This solves the technical problem that the waterproof performance test of the connector in the non-working state simulates water spray or spray conditions, which cannot reflect the actual waterproof performance of the automotive connector under working conditions. Water ingress into the connector can lead to errors in the vehicle's instrument cluster, short circuits, or even spontaneous combustion, affecting driving safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A flowchart of a method for testing the waterproof performance of automotive connectors provided in this application embodiment; Figure 2 This is a schematic diagram of a waterproof performance testing system for automotive connectors provided in an embodiment of this application.

[0019] In the diagram: 1. Connector; 2. Power supply; 3. Waterproof testing device; 4. Multimeter. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0021] This application provides a method and system for testing the waterproof performance of automotive connectors. It can solve the technical problem that the waterproof performance test of connectors simulates water spraying or spraying conditions in a non-working state, which cannot reflect the waterproof performance of automotive connectors under actual working conditions. Water ingress into connectors can lead to errors in the vehicle's instrument cluster, short circuits, or even spontaneous combustion, affecting driving safety.

[0022] See Figure 1 and Figure 2 As shown in the figure, this application provides a method for testing the waterproof performance of automotive connectors, which includes the following steps: S1: Connect connector 1 to power supply 2 and place it in waterproof test device 3 for waterproof test, and calculate the voltage drop of each terminal of connector 1.

[0023] S2: If the voltage drop at each terminal of connector 1 is greater than the first set voltage drop, then the waterproof performance of connector 1 does not meet the requirements.

[0024] In this embodiment, the connector 1 is connected to the power supply 2 to simulate the connector 1 heating up when powered on. The connector 1 is placed in the waterproof test device 3 to simulate the connector 1 being cooled by water spray, thus truly reflecting the waterproof performance of the connector 1 under working conditions. The waterproof performance of the connector 1 is determined by calculating the voltage drop at each terminal of the connector 1. If the voltage drop at each terminal of the connector 1 is greater than the first set voltage drop, then the waterproof performance of the connector 1 does not meet the requirements. Unsuitable connectors are then screened out, avoiding water ingress problems during later design verification and connector use, reducing vehicle repair rates and after-sales costs, improving connector reliability, and ensuring driving safety.

[0025] This embodiment tests the waterproof performance of connector 1 during use by simulating the heating and cooling process of connector 1 when it is powered on. It truly reflects the waterproof performance of connector 1 under working conditions, and solves the technical problem in related technologies where the waterproof performance test of connectors simulates water spraying or spraying conditions in a non-working state, which cannot reflect the waterproof performance of actual automotive connectors under working conditions. Water ingress into connectors can lead to errors in the vehicle's instrument cluster, short circuits, or even spontaneous combustion, affecting driving safety.

[0026] Furthermore, in some embodiments, the method for testing the waterproof performance of automotive connectors includes the following steps: S3: If the voltage drop of each terminal of connector 1 is less than or equal to the first set voltage drop, then connect connector 1 to a megohmmeter, apply the first set voltage between adjacent terminals of connector 1, and record the insulation resistance value between each terminal of connector 1.

[0027] S4: If the insulation resistance between each terminal of connector 1 is less than the first set resistance, then the waterproof performance of connector 1 does not meet the requirements.

[0028] In this embodiment, the connector 1, which has undergone heating upon power-on and cooling by water spray, is connected to the megohmmeter. Demonstratively, a 500V voltage is applied between adjacent terminals of the connector 1, and the insulation resistance value between each terminal of the connector 1 is recorded. If the insulation resistance value between each terminal of the connector 1 is less than 100V... If the waterproof performance of the connector 1 is not met, then the waterproof performance of the connector 1 does not meet the requirements.

[0029] Furthermore, in some embodiments, the method for testing the waterproof performance of automotive connectors includes the following steps: S5: If the insulation resistance between each terminal of connector 1 is greater than or equal to the first set resistance, then place connector 1 in a constant temperature and humidity test chamber and connect it to a leakage current tester after a set time to record the leakage current between adjacent terminals of connector 1.

[0030] S6: If the leakage current between two adjacent terminals of connector 1 is less than the first set current, then the waterproof performance of connector 1 meets the requirements.

[0031] In this embodiment, when the voltage drop and insulation resistance of the connector 1 both meet the requirements, the connector 1 is placed in the constant temperature and humidity test chamber. Exemplarily, the temperature inside the constant temperature and humidity test chamber is set to 55~65℃, and the humidity is set to 90%~95%. The connector 1 is placed in the constant temperature and humidity test chamber for 1 hour. Then, the leakage current tester is turned on, and the set voltage of the leakage current tester is set to 14V. The leakage current between adjacent terminals of the connector 1 is tested. If the leakage current between adjacent terminals of the connector 1 is less than 50... If the waterproof performance of the connector 1 is satisfactory, then the waterproof performance of the connector 1 meets the requirements.

[0032] Furthermore, in some embodiments, the method for testing the waterproof performance of automotive connectors further includes: If the voltage drop of each terminal of connector 1 is less than or equal to the first set voltage drop, then connector 1 is connected to a megohmmeter, the first set voltage is applied between the terminals of connector 1 and the sheath, and the insulation resistance value between the terminals of connector 1 and the sheath is recorded. If the insulation resistance between the terminals of connector 1 and the sheath is less than the first set resistance, then the waterproof performance of connector 1 does not meet the requirements.

[0033] In this embodiment, the connector 1, which has undergone heating upon power-on and cooling via water spray, is connected to the megohmmeter. Demonstratively, a 500V voltage is applied between the terminals and the sheath of the connector 1, and the insulation resistance value between the terminals and the sheath of the connector 1 is recorded. If the insulation resistance value between the terminals and the sheath of the connector 1 is less than 100V... If the waterproof performance of the connector 1 is not met, then the waterproof performance of the connector 1 does not meet the requirements.

[0034] Further, see Figure 1 and Figure 2 As shown, in some embodiments, connecting the connector 1 to the power supply 2 and placing it in the waterproof testing device 3 for waterproof testing, and calculating the voltage drop at each terminal of the connector 1, includes: S11: Test the resistance between the ends of the wires connected to both ends of connector 1 and the wire measurement points. .

[0035] S12: Connect connector 1 to power supply 2, and connect multimeter 4 to the measuring points on both ends of connector 1 via the test leads. Continuously test connector 1 in the waterproof test device 3 for a first set time, and record the voltage values ​​at both ends of connector 1. .

[0036] S13: After the connector 1 has been left to stand for the second set time, use multimeter 4 to test the resistance between the measuring points of the wires at both ends of connector 1. .

[0037] S14: Based on resistance value Voltage value and resistance value Calculate the voltage drop at each terminal of connector 1.

[0038] In this embodiment, exemplary, the power supply 2 is a DC power supply 2, and the output voltage of the DC power supply 2 is set to 14V. The two ends of the multimeter 4 are connected to the detection leads, and the detection leads are connected to the wire measurement points of the wires by soldering. The multimeter 4 is adjusted to the voltage range, and after the connector 1 is continuously sprayed with water for 30 minutes, the voltage value displayed by the multimeter 4 is recorded, that is, the voltage value at both ends of the connector 1. After turning off the waterproof testing device 3 and letting the connector stand for 1 hour, adjust the multimeter 4 to the resistance range and test the resistance value between the two wire measuring points of the connector 1, that is, the resistance value between the wire measuring points at both ends of the connector 1. Turn off the multimeter 4.

[0039] If the voltage drop at each terminal of the connector 1 is greater than 50 If the voltage drop at each terminal of the connector 1 is less than or equal to 50 kDa, then the waterproof performance of the connector 1 does not meet the requirements. Then, the connector 1 is connected to the megohmmeter for further testing. The formula for calculating the voltage drop at each terminal of the connector 1 is as follows: In the formula, The voltage value across connector 1. The resistance value is the distance between the ends of the wires connected to both ends of connector 1 and the measurement point on the wires. The resistance value is the resistance between the wires at both ends of connector 1.

[0040] Further, see Figure 2 As shown, in some embodiments, the resistance value between the wire ends connected to both ends of the test connector 1 and the wire measurement point is... ,include: Connect the positive and negative terminals of multimeter 4 to both ends of a 2L length of wire. Use multimeter 4 to measure the resistance of the wire. The resistance value of this wire is the resistance value. .

[0041] In this embodiment, exemplary, the length between the wire tip connected to each end of the connector 1 and the wire measurement point is 100 mm. A 200 mm long wire is prepared, which is the same as the wires connected to both ends of the connector 1. The multimeter 4 is connected to both ends of the wire, and the resistance value of the wire is tested using the multimeter 4, that is, the resistance value between the wire tip connected to both ends of the connector 1 and the wire measurement point. .

[0042] Further, see Figure 2 As shown, in some embodiments, after the connector 1 has been left to stand for a second set time, a multimeter 4 is used to test the resistance between the wire measurement points at both ends of the connector 1. Following that, it also includes: Remove connector 1 from the waterproof test device 3, wipe the surface of connector 1 dry, open the mated connector, and observe the color change of the color developer inside connector 1 and on the terminals.

[0043] In this embodiment, the pins of the connector 1 are numbered and fitted with compatible terminals. The interior and terminals of the connector 1 are coated with a water-sensitive color-changing agent. The resistance value is tested using a multimeter 4. Next, the connector 1 is removed from the waterproof test device 3, the surface of the connector 1 is dried, the mated connector is opened, and the color change of the color developer inside the connector 1 and on the terminals is observed. If the color developer changes color, then water has entered the connector 1, and the waterproof performance of the connector 1 does not meet the requirements.

[0044] Further, see Figure 2 As shown, in some embodiments, before the continuous testing of the connector 1 within the waterproof testing device 3 for the first predetermined time period, the following steps are included: Rivet the terminals of connector 1 to the appropriate wires and install the sealing plug.

[0045] In this embodiment, the wire passes through the sealing plug and is crimped to the terminal of the connector 1, and the sealing plug provides waterproof protection for the connection between the wire and the connector 1.

[0046] Further, see Figure 2 As shown, in some embodiments, before the continuous testing of the connector 1 within the waterproof testing device 3 for the first predetermined time period, the following steps are also included: Wire measuring points are set on the wires connected to both ends of connector 1, and the distance between the wire measuring point and the wire head on the side closest to connector 1 is L; Connect the test lead to the lead measurement point and seal the lead measurement point with double-arm heat shrink tubing.

[0047] In this embodiment, the double-arm heat shrink tubing seals the wire located at the wire measurement point, which can provide waterproof protection for the connection between the wire and the detection wire.

[0048] See Figure 2 As shown, this application provides a testing system for the above-described method for testing the waterproof performance of automotive connectors, comprising: Waterproof testing device 3, with wires at both ends of the waterproof testing device 3, and wire measuring points at each segment of the wires, the waterproof testing device 3 is used to place the connector 1; Power supply 2, the two ends of which are connected to the wires at both ends of the waterproof testing device 3; Multimeter 4, the two ends of which are connected to the wires at both ends of the waterproof testing device 3.

[0049] In this embodiment, the connector 1 is connected to the power supply 2 via the wire to simulate the connector 1 heating up when energized. The connector 1 is placed in the waterproof testing device 3 to simulate the connector 1 being cooled by water, thus truly reflecting the waterproof performance of the connector 1 under working conditions. The connector 1 is connected to the multimeter 4 via the test wire. The multimeter 4 is used to detect the voltage and resistance between the two measurement points of the connector 1. By calculating the voltage drop at each terminal of the connector 1, it is determined whether the waterproof performance of the connector 1 meets the requirements. If the voltage drop at each terminal of the connector 1 is greater than the first set voltage drop, then the waterproof performance of the connector 1 does not meet the requirements. Unsuitable connectors are screened out to avoid water ingress problems during later design verification and connector use, reduce vehicle repair rate and after-sales costs, improve connector reliability, and ensure driving safety.

[0050] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0051] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for testing the waterproof performance of automotive connectors, characterized in that, It includes the following steps: Connect the connector to a power source and place it in a waterproof testing device for waterproof testing. Calculate the voltage drop at each terminal of the connector. If the voltage drop at each terminal of the connector is greater than the first set voltage drop, the waterproof performance of the connector does not meet the requirements.

2. The method for testing the waterproof performance of automotive connectors as described in claim 1, characterized in that, It includes the following steps: If the voltage drop of each terminal of the connector is less than or equal to the first set voltage drop, then connect the connector to a megohmmeter, apply the first set voltage between adjacent terminals of the connector, and record the insulation resistance value between each terminal of the connector. If the insulation resistance between the terminals of the connector is less than the first set resistance, the waterproof performance of the connector does not meet the requirements.

3. The method for testing the waterproof performance of automotive connectors as described in claim 2, characterized in that, It includes the following steps: If the insulation resistance between each terminal of the connector is greater than or equal to the first set resistance, the connector is placed in a constant temperature and humidity test chamber and connected to a leakage current tester after a set time to record the leakage current between adjacent terminals of the connector. If the leakage current between two adjacent terminals of the connector is less than the first set current, the waterproof performance of the connector meets the requirements.

4. The method for testing the waterproof performance of automotive connectors as described in claim 2, characterized in that, The test method for the waterproof performance of automotive connectors also includes: If the voltage drop of each terminal of the connector is less than or equal to the first set voltage drop, then connect the connector to a megohmmeter, apply the first set voltage between the terminals and the sheath of the connector, and record the insulation resistance value between the terminals and the sheath of the connector. If the insulation resistance between the terminals and the sheath of the connector is less than the first set resistance, the waterproof performance of the connector does not meet the requirements.

5. The method for testing the waterproof performance of automotive connectors as described in claim 1, characterized in that, The process of connecting the connector to a power source and placing it in a waterproof testing device for waterproof testing, and calculating the voltage drop at each terminal of the connector, includes: Test the resistance between the ends of the wires connected to the two ends of the connector and the measurement point on the wire. ; Connect the connector to a power source and connect a multimeter to the measuring points on both ends of the connector via test leads. Continuously test the connector within the waterproof testing device for a first set time and record the voltage values ​​at both ends of the connector. ; After the connector has been left to stand for the second set time, use a multimeter to test the resistance between the measuring points on both ends of the connector. ; Based on resistance value Voltage value and resistance value Calculate the voltage drop at each terminal of the connector.

6. The method for testing the waterproof performance of automotive connectors as described in claim 5, characterized in that, The length between the wire tip connected to each end of the connector and the wire measurement point is L, and the resistance value between the wire tip connected to both ends of the test connector and the wire measurement point is... ,include: Connect the positive and negative terminals of a multimeter to both ends of a 2L length of wire. Use the multimeter to measure the resistance of the wire; this resistance value is the resistance of the wire. .

7. The method for testing the waterproof performance of automotive connectors as described in claim 5, characterized in that, The connector's interior and terminals are coated with a water-sensitive color-changing agent. After the connector has been left to stand for a second set time, a multimeter is used to test the resistance between the measuring points on the wires at both ends of the connector. Following that, it also includes: Remove the connector from the waterproof test apparatus, wipe the surface of the connector dry, open the mated connector, and observe the color change of the color developer inside the connector and on the terminals.

8. The method for testing the waterproof performance of automotive connectors as described in claim 5, characterized in that, Before the continuous testing of the connectors within the waterproof testing device for the first set time period, the following is included: Rivet the terminals of the connector to the appropriate wires and install the sealing plug.

9. The method for testing the waterproof performance of automotive connectors as described in claim 5, characterized in that, Before the continuous testing of the connectors in the waterproof testing device within the first set time period, the method further includes: Wire measuring points are set on the wires connected at both ends of the connector, and the distance between the wire measuring point and the wire head on the side closest to the connector is L; Connect the test lead to the lead measurement point and seal the lead measurement point with double-arm heat shrink tubing.

10. A test system for the waterproof performance testing method of automotive connectors as described in claim 1, characterized in that, It includes: A waterproof testing device, wherein both ends of the waterproof testing device are provided with wires, each segment of the wire is provided with a wire measuring point, and the waterproof testing device is used to hold a connector; A power source, the two ends of which are connected to the wires at both ends of the waterproof testing device; A multimeter, the two ends of which are connected to the wires at both ends of the waterproof testing device.

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