Crimping terminal and cable connection assembly
By filling the immersed tin layer in the gap between the crimp terminal and the copper wire, the high temperature oxidation problem caused by the crimp terminal and the cable gap is solved, and a more stable charging connection and longer equipment life is achieved.
Patent Information
- Application Number
- CN202422188632.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-06
AI Technical Summary
In 200A and above new energy charging guns and charging sockets, the gap between the crimp terminals and cables leads to an increase in contact resistance, resulting in high temperature oxidation and frequent gun jumps, affecting customer experience and after-sales quality costs of the manufacturing plant.
A hollow crimp terminal is designed to fill the immersion layer of the copper wire gap, and fill the gap with tin through the flare mouth to reduce the contact resistance and protect the copper wire from oxidation.
Effectively reduce the heat generation of crimped parts, extend the service life of the charging gun and charging stand, improve customer experience and reduce after-sales costs.
Smart Images
Figure CN223167658U_ABST
Abstract
Description
Technical Field:
[0001] The utility model relates to a component for connecting a crimp terminal and a cable, belonging to the technical fields of new energy vehicles, charging guns, charging piles, energy storage devices, etc. Background Art:
[0002] In new energy charging guns and charging sockets with a current of 200A or above, for large wire diameter cables with a cross-sectional area of 50 square meters or more, six-sided crimping or B-type crimping is used to connect the cables to the crimp terminals. When connecting by crimping, there will be gaps between the crimp terminal and the copper wires inside the cable. Due to the existence of these gaps, the contact resistance at the contact part between the crimp terminal and the copper wires will increase. After high-current charging and long-term charging, the temperature of the crimping part will increase. Affected by the high temperature, the copper wires at the crimping part will continuously oxidize in a cycle, and the temperature of the crimping part will become higher and higher. The charging piles and new energy vehicles will frequently trip for protection, resulting in too long charging time or damage, seriously affecting the charging experience and complaints of the client.
[0003] Therefore, it is necessary to improve the existing technology to solve the deficiencies of the existing technology. Content of the Utility Model:
[0004] The utility model provides a component for connecting a crimp terminal and a cable to solve the above problems existing in the prior art. It can reduce and stabilize the heat generation at the crimping part, prevent the copper wires from heating and oxidizing in a cycle and being prone to high temperature, thus avoiding the occurrence of high temperature at the terminal crimping part.
[0005] The technical solution adopted by the utility model is as follows: A component for connecting a crimp terminal and a cable includes a crimp terminal and a cable. The inside of the crimp terminal is hollow. The cable includes copper wires and an insulating layer coated on the outside of the copper wires. The copper wires exposed after the insulating layer near the end of the cable close to the crimp terminal is peeled off are installed into the hollow inside of the crimp terminal, and crimping is performed on the outside of the crimp terminal to crimp the crimp terminal and the copper wires together. After crimping, several gaps are formed between the crimp terminal and the copper wires.
[0006] Further, the crimping part on the crimp terminal is the crimp portion, and the parts on both sides of the crimp portion are the flare portions.
[0007] Further, the length of the flare portion is 2 - 5 mm.
[0008] Further, an observation hole for observing the inside of the crimp terminal is formed on the crimp terminal, and the observation hole is located on one side of the flare portion of the crimp terminal away from the cable.
[0009] Further, a tinned layer is also infiltrated between the insulating layer and the copper wires of the cable near the crimp terminal.
[0010] Further, the weight of the tin immersion layer is 3.5 ± 2 grams.
[0011] The utility model has the following beneficial effects: The assembly of the crimp terminal and the cable of the utility model can meet the temperature rise problems of more new energy high-power charging guns and charging seats above 200A, and effectively solve the after-sales quality cost of the manufacturing factory and the customer experience satisfaction effect. Description of the drawings:
[0012] Figure 1 It is a schematic diagram of the assembly of the crimp terminal and the cable of the utility model. Specific implementation manners:
[0013] The following further describes the utility model with reference to the drawings.
[0014] The assembly of the crimp terminal and the cable of the utility model includes a crimp terminal 1 and a cable 2. The inside of the crimp terminal 1 is hollow. The cable 2 includes copper wires (not marked) and an insulating layer 20 coated on the outside of the copper wires. The insulating layer 20 near the end of the cable 2 close to the crimp terminal 1 is stripped off to expose the copper wires therein. This part of the copper wires is installed into the hollow inside of the crimp terminal 1.
[0015] Crimping is performed on the outside of the crimp terminal 1 to crimp the crimp terminal 1 and the copper wires together. The crimping part on the crimp terminal 1 is the crimping portion 10, and the parts on both sides of the crimping portion 10 are the flare portions 11. The length of the flare portions 11 is 2 - 5 mm. An observation hole 12 capable of observing the inside of the crimp terminal 1 is formed on the crimp terminal 1, and the observation hole 12 is located on the side of the crimp terminal 1 away from the flare portion 11 of the cable 2.
[0016] After crimping, a number of gaps (not shown) are formed between the crimp terminal 1 and the copper wires, and a tin immersion layer (not shown) is infiltrated in these gaps. The weight of the tin immersion layer is 3.5 ± 2 grams. A tin layer (not shown) is also infiltrated between the insulating layer 20 and the copper wires of the cable 2 near the crimp terminal 1.
[0017] The crimp terminal and cable assembly of the utility model is applied to new energy vehicle charging sockets, charging guns, and charging energy storage devices. After the crimp terminal and cable of the utility model are crimped well, tin is poured in from the flare portion 11 to fill the gaps between the crimp terminal and the copper wires. Filling the gaps can effectively reduce the contact resistance at the crimping part. When charging with a large current and for a long time, it can reduce and stabilize the heat generation at the crimping part, is not easy to generate high temperature, and the poured tin layer can also protect the copper wires from oxidation. Thus, the service life of the charging gun and charging seat is extended as a whole, the occurrence of high temperature phenomena is avoided, the complaints of the client are reduced, and the after-sales cost of the factory is greatly saved.
[0018] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be regarded as the protection scope of the present utility model.
Claims
1. A component for connecting a crimp terminal and a cable, characterized in that: It includes a crimping terminal (1) and a cable (2). The inside of the crimping terminal (1) is hollow. The cable (2) includes copper wires and an insulating layer (20) coated on the outer side of the copper wires. The copper wires exposed after the insulating layer (20) near the end of the cable (2) close to the crimping terminal (1) is stripped off are installed into the hollow inside of the crimping terminal (1), and crimping is performed on the outer side of the crimping terminal (1) to crimp the crimping terminal (1) and the copper wires together. After crimping, a number of gaps are formed between the crimping terminal (1) and the copper wires.
2. The assembly of the crimp terminal and the cable according to claim 1, wherein: The crimping part on the crimping terminal (1) is a crimping portion (10), and the parts on both sides of the crimping portion (10) are flare portions (11).
3. The assembly of the crimp terminal and the cable according to claim 2, characterized in that: The length of the flare portion (11) is 2 - 5 mm.
4. The assembly of the crimp terminal and the cable according to claim 2, characterized in that: An observation hole (12) capable of observing the inside of the crimping terminal (1) is formed on the crimping terminal (1), and the observation hole (12) is located on one side of the crimping terminal (1) away from the flare portion (11) of the cable (2).
5. The component of the crimp terminal and the cable connection according to claim 1, characterized in that: An impregnated tin layer is also infiltrated between the insulating layer (20) and the copper wires of the cable (2) near the crimping terminal (1).
6. The assembly of the crimp terminal and the cable according to claim 5, characterized in that: The weight of the impregnated tin layer is 3.5 ± 2 grams.