Waterproof high-voltage power wire harness

Abstract

The utility model discloses a waterproof high-voltage power wire harness, which relates to the technical field of power wire harnesses, and comprises a wire harness assembly, a first sealing mechanism, a second sealing mechanism, a third sealing mechanism and a fourth sealing mechanism, the first sealing mechanism is arranged in the wire harness assembly and comprises a nickel layer, and the nickel layer is arranged in the wire harness assembly. The second sealing mechanism is arranged outside the wire harness assembly, the third sealing mechanism is arranged outside the second sealing mechanism, and the fourth sealing mechanism is arranged outside the third sealing mechanism. According to the utility model, by utilizing the arrangement of the nickel layer, after crimping by a cold pressing process, metal nickel in a molten state is filled into the pressing seam, the nickel layer is formed after the metal nickel is cooled and solidified, and the nickel layer has good sealing performance and prevents liquid from entering the wire harness through the pressing seam, so that the waterproof effect of the power wire harness is improved; and meanwhile, the metal nickel also has good corrosion resistance and oxidation resistance, is stable in chemical performance and can be suitable for various extremely severe environments.

Description

Technical Field

[0001] This utility model relates to the field of power harness technology, and in particular to a waterproof high-voltage power harness. Background Technology

[0002] Electric drive systems are now one of the core components of new energy development. The performance of electric drive systems is affected by the performance of motors, which are connected to equipment via high-voltage power harnesses.

[0003] The power harness mainly consists of a flexible wire harness and OT terminals. The OT terminals are made of a copper tube through a cold pressing process. Only part of the copper tube is crimped, and the other part is directly inserted into the wire harness to form a power harness.

[0004] However, the copper pipe is crimped in a double-layered manner, which poses a risk of water ingress at the crimped joint. If water enters the power harness, it can cause aging and damage to the wires and connections, and in severe cases, it can lead to a decrease in insulation resistance and insulation failure of the entire electric drive system. Therefore, we propose a waterproof high-voltage power harness. Utility Model Content

[0005] The purpose of this invention is to provide a waterproof high-voltage power supply harness to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waterproof high-voltage power supply harness, comprising:

[0007] Wire harness assembly;

[0008] A first sealing mechanism is disposed inside the wire harness assembly, and the first sealing mechanism includes a nickel layer disposed inside the wire harness assembly;

[0009] A second sealing mechanism is disposed on the outside of the wire harness assembly;

[0010] A third sealing mechanism is disposed outside the second sealing mechanism;

[0011] A fourth sealing mechanism is disposed outside the third sealing mechanism.

[0012] Preferably, the wire harness assembly includes a wire harness body and an OT terminal, wherein the wire harness body is inserted into the inner wall of the OT terminal, and the OT terminal is made of copper.

[0013] Preferably, the end of the OT terminal away from the main body of the wire harness is flattened, and the nickel layer is disposed at the flattened position of the OT terminal.

[0014] Preferably, the second sealing mechanism includes a second sealing layer, which is wrapped around the outer wall of the OT terminal, and the material of the second sealing layer is cement resistant.

[0015] Preferably, the third sealing mechanism includes a third sealing layer disposed on the outer wall of the second sealing layer, the length of the third sealing layer being greater than the length of the second sealing layer, the second sealing layer being PVC tape, and the PVC tape being spirally wound around the OT terminal and the outer wall of the second sealing layer.

[0016] Preferably, the fourth sealing mechanism includes a fourth sealing layer, which is disposed on the outer wall of the third sealing layer. The length of the fourth sealing layer is greater than the length of the third sealing layer. The fourth sealing layer is a heat shrink tubing, which is sleeved on the outer wall of the third sealing layer and the OT terminal.

[0017] Preferably, the outer wall of the nickel layer is plated with a tin layer, a connection hole is provided on one side of the nickel layer at the flattened position, and a rounded chamfer is provided on the top of the inner wall of the OT terminal.

[0018] The technical effects and advantages of this utility model are as follows:

[0019] This invention utilizes a nickel layer. After the OT terminals are crimped using a cold pressing process, molten metallic nickel is filled into the crimped seam. After cooling and solidification, a nickel layer is formed. The nickel layer has good sealing properties, preventing liquid from entering the wiring harness through the crimped seam, thereby improving the waterproof effect of the power wiring harness. At the same time, metallic nickel also has good corrosion resistance, oxidation resistance, and stable chemical properties, making it suitable for various extreme and harsh environments and extending the service life of the power wiring harness. Attached Figure Description

[0020] Figure 1 This is a front cross-sectional view of the present invention.

[0021] Figure 2 This utility model Figure 1 A magnified schematic diagram of the structure at point A.

[0022] In the diagram: 101, main body of the wire harness; 102, OT terminal; 201, nickel layer; 301, second sealing layer; 401, third sealing layer; 501, fourth sealing layer; 601, connecting hole; 701, tin layer; 801, rounded chamfer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figures 1-2 The waterproof high-voltage power harness shown includes a harness assembly, a first sealing mechanism, a second sealing mechanism, a third sealing mechanism, and a fourth sealing mechanism. The first sealing mechanism is disposed inside the harness assembly and includes a nickel layer 201. After the OT terminal 102 is crimped by a cold pressing process, molten metallic nickel is filled into the crimped seam. After cooling and solidification, the nickel layer 201 is formed. The nickel layer 201 has good sealing properties, preventing liquid from entering the harness through the crimped seam, thereby improving the waterproof effect of the power harness. At the same time, metallic nickel also has good corrosion resistance, oxidation resistance, and stable chemical properties, making it suitable for various extreme and harsh environments and extending the service life of the power harness.

[0025] The wiring harness assembly includes a wiring harness body 101 and an OT terminal 102. The wiring harness body 101 is inserted into the inner wall of the OT terminal 102. The OT terminal 102 is made of copper, and the end of the OT terminal 102 away from the wiring harness body 101 is flattened. A nickel layer 201 is disposed at the flattened position of the OT terminal 102. The wiring harness body 101 is inserted into the un-crimped part of the OT terminal 102 to connect the wiring harness body 101 and the OT terminal 102. A tin layer 701 is plated on the outer wall of the nickel layer 201. A connection hole 601 is formed on one side of the nickel layer 201 at the flattened position. A rounded chamfer 801 is formed on the top of the inner wall of the OT terminal 102. The rounded chamfer 801 makes the OT terminal 102... The enlarged opening facilitates the insertion of the harness body 101 into the OT terminal 102. The tin layer 701 effectively isolates the OT terminal 102 from direct contact with the environment, preventing oxidation and corrosion. Furthermore, tin oxide has better conductivity than other metal oxides, and the tin layer 701 ensures a tight contact surface during connection, reducing contact resistance and minimizing electrical signal loss and interference. In high-frequency circuits, tin plating further improves signal transmission efficiency. The OT terminal 102 is fitted onto the bolt of the connecting terminal through the connecting hole 601. As long as the bolt remains in the threaded hole, the OT terminal 102 will not separate from the connecting terminal, ensuring the stability of the power harness.

[0026] The second sealing mechanism is located outside the wiring harness assembly. The second sealing mechanism includes a second sealing layer 301, which is wrapped around the outer wall of the OT terminal 102. The material of the second sealing layer 301 is cement resistant. Cement resistant material can effectively prevent water penetration, thereby preventing liquid from entering the insertion position between the wiring harness body 101 and the OT terminal 102, thus improving the waterproof effect of the power wiring harness.

[0027] The third sealing mechanism is located outside the second sealing mechanism. The third sealing mechanism includes a third sealing layer 401, which is disposed on the outer wall of the second sealing layer 301. The length of the third sealing layer 401 is greater than the length of the second sealing layer 301. The second sealing layer 301 is PVC tape, which is spirally wound around the OT terminal 102 and the outer wall of the second sealing layer 301. Waterproof tape is also wrapped around the outer wall of the second sealing layer 301 and a portion of the outer wall of the OT terminal 102 that is not covered by the second sealing layer 301, further blocking liquid and ensuring the waterproofness of the power harness.

[0028] The fourth sealing mechanism is located outside the third sealing mechanism. The fourth sealing mechanism includes a fourth sealing layer 501, which is disposed on the outer wall of the third sealing layer 401. The length of the fourth sealing layer 501 is greater than the length of the third sealing layer 401. The fourth sealing layer 501 is a heat shrink tubing, which is sleeved on the outer wall of the third sealing layer 401 and the OT terminal 102. The heat shrink tubing is sleeved on the outer wall of the third sealing layer 401, and then heated to shrink it. The heat shrink tubing shrinks onto the outer wall of the third sealing layer 401 and also wraps the outer wall of the OT terminal 102 that is not covered by the third sealing layer 401. This improves waterproofness and prevents the PVC tape inside the third sealing layer 401 from falling off, thus improving the working stability of the third sealing layer 401.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waterproof high-voltage power supply harness, characterized in that, include: Wire harness assembly; A first sealing mechanism is disposed inside the wire harness assembly. The first sealing mechanism includes a nickel layer (201) disposed inside the wire harness assembly. A second sealing mechanism is disposed on the outside of the wire harness assembly; A third sealing mechanism is disposed outside the second sealing mechanism; A fourth sealing mechanism is disposed outside the third sealing mechanism.

2. The waterproof high-voltage power supply harness according to claim 1, characterized in that, The wiring harness assembly includes a wiring harness body (101) and an OT terminal (102). The wiring harness body (101) is inserted into the inner wall of the OT terminal (102), and the OT terminal (102) is made of copper.

3. The waterproof high-voltage power supply harness according to claim 2, characterized in that, The OT terminal (102) is flattened at the end away from the wire harness body (101), and the nickel layer (201) is disposed at the flattened position of the OT terminal (102).

4. A waterproof high-voltage power supply harness according to claim 2, characterized in that, The second sealing mechanism includes a second sealing layer (301), which is wrapped around the outer wall of the OT terminal (102). The material of the second sealing layer (301) is cement resistant.

5. A waterproof high-voltage power supply harness according to claim 4, characterized in that, The third sealing mechanism includes a third sealing layer (401), which is disposed on the outer wall of the second sealing layer (301). The length of the third sealing layer (401) is greater than the length of the second sealing layer (301). The second sealing layer (301) is PVC tape, which is spirally wound around the OT terminal (102) and the outer wall of the second sealing layer (301).

6. A waterproof high-voltage power supply harness according to claim 5, characterized in that, The fourth sealing mechanism includes a fourth sealing layer (501), which is disposed on the outer wall of the third sealing layer (401). The length of the fourth sealing layer (501) is greater than the length of the third sealing layer (401). The fourth sealing layer (501) is a heat shrink tubing, which is sleeved on the outer wall of the third sealing layer (401) and the OT terminal (102).

7. A waterproof high-voltage power supply harness according to claim 3, characterized in that, The outer wall of the nickel layer (201) is plated with a tin layer (701), and a connection hole (601) is provided on one side of the nickel layer (201) at the flattened position. The top of the inner wall of the OT terminal (102) is provided with a rounded chamfer (801).

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