Motor welding copper bar

Abstract

The utility model discloses a motor welding copper bar, which relates to the field of copper bars, and comprises a first copper bar stranded wire, a second copper bar stranded wire is arranged on the outer wall of the first copper bar stranded wire, a terminal is arranged at one end of the first copper bar stranded wire, a slot is arranged in the terminal, an anti-skidding convex block is fixedly connected in the terminal, and the anti-skidding convex block is arranged in the slot. A plurality of groups of first copper bar stranded wires and second copper bar stranded wires are wound, one end of each first copper bar stranded wire and one end of each second copper bar stranded wire are welded, then the ends are shaped, terminals are moved to sleeve the welded and shaped ends, and the ends of the first copper bar stranded wires and the second copper bar stranded wires are extruded by anti-slip bumps by crimping the terminals, so that the problem of resistance fluctuation is solved, and the service life of the terminals is prolonged. The outer wall of the first copper bar stranded wire is fixedly connected with the epoxy resin coating, so that the corrosion resistance and the oxidation resistance of the copper bar can be improved, and the outer wall of the epoxy resin coating is fixedly connected with the tinned coating, so that the insulating property of the copper bar can be improved.

Description

Technical Field

[0001] This utility model relates to the field of copper busbars, specifically a copper busbar for motor welding. Background Technology

[0002] When optimizing the cost and process of the three-phase motor lead wire, the method of directly threading stranded wire through the terminal and crimping the terminal before welding the current guide ring is adopted. However, the crimping resistance is unstable when crimping the terminal, which leads to an imbalance of the three-phase DC resistance of the motor, resulting in increased power loss and reduced motor efficiency. Due to the unstable and large fluctuation of the resistance, it is impossible to meet the requirement of three-phase motor DC resistance imbalance ≤2%. Therefore, a motor welding copper busbar is needed.

[0003] Existing welded copper busbars for motors suffer from unstable and fluctuating resistance during use, failing to meet the requirement of ≤2% DC resistance imbalance for three-phase motors. Furthermore, the copper busbars have poor corrosion and oxidation resistance. Therefore, there is an urgent need for a new type of welded copper busbar for motors. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a welding copper busbar for motors, so as to solve the problems of unstable and fluctuating resistance and poor corrosion and oxidation resistance of existing welding copper busbars for motors.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a copper busbar for motor welding, comprising a first copper busbar stranded wire, a second copper busbar stranded wire installed on the outer wall of the first copper busbar stranded wire, a terminal installed at one end of the first copper busbar stranded wire, a slot provided inside the terminal, an anti-slip protrusion fixedly connected inside the terminal, and a crimping groove provided inside the terminal.

[0006] The outer wall of the first copper busbar is fixedly connected with an epoxy resin coating, and the outer wall of the epoxy resin coating is fixedly connected with a tin-plated coating.

[0007] Preferably, the first copper busbar stranded wire and the second copper busbar stranded wire are wound together, and one end of the first copper busbar stranded wire and the second copper busbar stranded wire are welded together.

[0008] Preferably, the first copper busbar stranded wire and the second copper busbar stranded wire are attached to each other, and the first copper busbar stranded wire and the second copper busbar stranded wire are arranged in multiple sets.

[0009] Preferably, the first copper busbar stranded wire is connected to the terminal through a slot, and the anti-slip protrusions are arranged in a ring array with the central axis of the terminal as the center.

[0010] Preferably, the first copper busbar stranded wire is tightly bonded to the epoxy resin coating, and the first copper busbar stranded wire is arranged parallel to the epoxy resin coating.

[0011] Preferably, the epoxy resin coating and the tin plating coating are tightly bonded together, and the epoxy resin coating and the tin plating coating are arranged in parallel.

[0012] Preferably, the tin-plated coating and the zinc-plated coating are tightly bonded together, and the zinc-plated coating wraps around the outer wall of the tin-plated coating.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of a first copper busbar stranded wire, a second copper busbar stranded wire, a terminal, and an anti-slip protrusion, winds multiple sets of first and second copper busbar stranded wires together, welds one end of each wire, shapes the end, moves the terminal to fit over the welded and shaped end, and presses the terminal so that the anti-slip protrusion squeezes the end of the first and second copper busbar stranded wires, increasing the pull-out force of the terminal to the copper busbar by about 20%. This not only reduces the resistance fluctuation problem but also reduces the crimping resistance by 25 times, completely solving the problem of DC resistance three-phase imbalance ≤2%.

[0015] 2. This utility model, through the setting of a first copper busbar stranded wire, an epoxy resin coating, a tin-plated coating, and a zinc-plated coating, with the epoxy resin coating fixedly connected to the outer wall of the first copper busbar stranded wire, can improve the corrosion and oxidation resistance of the copper busbar; with the tin-plated coating fixedly connected to the outer wall of the epoxy resin coating, it can improve the insulation performance of the copper busbar; and with the zinc-plated coating fixedly connected to the outer wall of the tin-plated coating, it can improve the protection of the copper busbar. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a perspective view of the first copper busbar stranded wire of this utility model;

[0018] Figure 3 This is a perspective view of the terminal of this utility model;

[0019] Figure 4 This is a three-dimensional sectional view of the first copper busbar stranded wire of this utility model.

[0020] In the diagram: 1. First copper busbar stranded wire; 2. Second copper busbar stranded wire; 3. Terminal; 4. Slot; 5. Anti-slip protrusion; 6. Epoxy resin coating; 7. Tin plating coating; 8. Zinc plating coating; 9. Crimping groove. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] The embodiments of this utility model will be described below based on its overall structure.

[0023] Please see Figure 1-4 A type of motor welding copper busbar includes a first copper busbar stranded wire 1, a second copper busbar stranded wire 2 installed on the outer wall of the first copper busbar stranded wire 1, a terminal 3 installed at one end of the first copper busbar stranded wire 1, a slot 4 opened inside the terminal 3, anti-slip protrusions 5 fixedly connected inside the terminal 3, and a crimping groove 9 opened inside the terminal 3. The first copper busbar stranded wire 1 and the second copper busbar stranded wire 2 are wound together, and one end of the first copper busbar stranded wire 1 and the second copper busbar stranded wire 2 are welded together. The first copper busbar stranded wire 1 and the second copper busbar stranded wire 2 are arranged in multiple groups. The first copper busbar stranded wire 1 is engaged with the terminal 3 through the slot 4, and the anti-slip protrusions 5 are arranged in a ring around the central axis of the terminal 3, which can reduce resistance fluctuation and completely solve the problem of DC resistance three-phase imbalance ≤2%.

[0024] Please see Figure 1-4 A type of welded copper busbar for motors, wherein an epoxy resin coating 6 is fixedly connected to the outer wall of a first copper busbar stranded wire 1, and a tin-plated coating 7 is fixedly connected to the outer wall of the epoxy resin coating 6. The first copper busbar stranded wire 1 and the epoxy resin coating 6 are tightly bonded together and arranged in parallel. The epoxy resin coating 6 and the tin-plated coating 7 are tightly bonded together and arranged in parallel. The tin-plated coating 7 and the zinc-plated coating 8 are tightly bonded together, and the zinc-plated coating 8 wraps around the outer wall of the tin-plated coating 7, which can improve the corrosion resistance and oxidation resistance of the copper busbar.

[0025] Working principle: In use, multiple sets of first copper busbar stranded wires 1 and second copper busbar stranded wires 2 are wound together and welded at one end. The ends are then shaped to make them flatter. The terminal 3 is moved so that it fits onto the welded and shaped ends. At this time, the ends of the first copper busbar stranded wires 1 and second copper busbar stranded wires 2 are located in the slot 4. By pressing the terminal 3, the sleeve of the terminal 3 is deformed, causing the anti-slip protrusion 5 to press against the ends of the first copper busbar stranded wires 1 and second copper busbar stranded wires 2, which can prevent the copper busbar from being pulled out. An epoxy resin coating 6 is fixedly connected to the outer wall of the first copper busbar stranded wires 1, which can improve the corrosion resistance and oxidation resistance of the copper busbar. A tin-plated coating 7 is fixedly connected to the outer wall of the epoxy resin coating 6, which can improve the insulation performance of the copper busbar. A zinc-plated coating 8 is fixedly connected to the outer wall of the tin-plated coating 7, which can improve the protection of the copper busbar, thereby extending the service life of the copper busbar. This completes the use of the device. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0026] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. An electric machine welding copper bar comprising a first copper bar strand (1), characterized in that: The outer wall of the first copper buss cable (1) is provided with a second copper buss cable (2), one end of the first copper buss cable (1) is provided with a terminal (3), the inside of the terminal (3) is provided with a slot (4), the inside of the terminal (3) is fixedly connected with an anti-skid bump (5), and the inside of the terminal (3) is provided with a crimping groove (9). The outer wall of the first copper buss cable (1) is fixedly connected with an epoxy resin coating (6), the outer wall of the epoxy resin coating (6) is fixedly connected with a tin-plated coating (7), and the outer wall of the tin-plated coating (7) is fixedly connected with a zinc-plated coating (8).

2. A motor welding copper bar according to claim 1, characterized in that: The first copper buss cable (1) and the second copper buss cable (2) are arranged in a winding manner, and one end of the first copper buss cable (1) and the second copper buss cable (2) is welded.

3. The electric machine welding copper bar of claim 1, wherein: The first copper buss cable (1) and the second copper buss cable (2) are in close contact, and the first copper buss cable (1) and the second copper buss cable (2) are arranged in multiple groups.

4. The electric machine welding copper bar of claim 1, wherein: The first copper buss cable (1) is connected with the terminal (3) through the slot (4), and the anti-skid bump (5) is arranged in a ring shape around the central axis of the terminal (3).

5. The electric machine welding copper bar of claim 1, wherein: The first copper buss cable (1) is in close contact with the epoxy resin coating (6), and the first copper buss cable (1) and the epoxy resin coating (6) are arranged in parallel.

6. A motor bar as defined in claim 1 wherein: The epoxy resin coating (6) and the tin-plated coating (7) are in close contact, and the epoxy resin coating (6) and the tin-plated coating (7) are arranged in parallel.

7. The electric machine welding copper bar of claim 1, wherein, The tin-plated coating (7) and the zinc-plated coating (8) are in close contact, and the zinc-plated coating (8) is wrapped on the outer wall of the tin-plated coating (7).

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