Plug terminal between battery and motor and processing method thereof

Abstract

The invention belongs to the technical field of battery plug-in terminals, and particularly relates to a plug-in terminal between a battery and a motor, the plug-in terminal comprises a square block and a round bar, one side surface of the square block and one end of the round bar are fixed through friction welding, the round bar is located on the upper side of the square block, and a ball head, a cylinder I, a cylinder II and a cylinder III are sequentially arranged on the round bar from the end to the joint of the round bar and the square block; the ball head, the first cylinder, the second cylinder and the third cylinder are plugging parts, the diameters of the plugging parts are gradually increased, a round hole is formed in the middle of the rear portion of the square block, the square block and the round rod are fixed through friction welding, and then a finished product is obtained through machining. The method is high in machining precision, high in material utilization rate and low in cost.

Description

Technical Field

[0001] This invention belongs to the field of battery connector technology, specifically relating to a connector between a battery and a motor and its processing method. Background Technology

[0002] Existing plug terminals are generally integral pieces, manufactured into finished products through forging and machining. However, this method generally places the plug on the center line of the entire plug terminal, which cannot meet the needs of some parts that require eccentricity. Moreover, the material utilization rate is low and the cost is high. If the general processing method is used to produce eccentric plug terminals, it will take a lot of time and effort, and the processing accuracy will not be high enough. Summary of the Invention

[0003] To address the aforementioned problems in the prior art, this invention provides a plug-in terminal between a battery and a motor, and its processing method, which features high processing precision, high material utilization, and low cost.

[0004] To achieve the above objectives, the present invention provides a technical solution as follows: a plug-in terminal between a battery and a motor, comprising a block and a round rod, one side of the block and one end of the round rod being fixed by friction welding, with the round rod located on the upper side of the block, and the round rod being provided with a ball head, a cylinder one, a cylinder two and a cylinder three in sequence from the end to the connection point with the block, the ball head, cylinder one, cylinder two and cylinder three being plug-in parts with gradually increasing diameters, and a round hole being opened in the middle of the rear part of the block.

[0005] Furthermore, a flat surface is formed on the side of cylinder three near cylinder two, and a connecting rod is formed between the ball head and cylinder one. The diameter of the connecting rod is smaller than that of the ball head, and cylinders one, two, and three are connected smoothly at an oblique angle.

[0006] Another technical solution is: a method for processing a connector terminal between a battery and a motor, the method comprising the following steps: Step 1: Fixing by friction welding Apply a certain axial pressure to the block and the round bar at the place where they need to be fixed and make the contact surface move by friction. After heating the contact surface to the welding temperature, stop the movement. Then apply upsetting pressure to the block and the round bar respectively, so that the block and the round bar will undergo plastic deformation. After cooling, they are welded together. Step 2: Machining First, cylinder one, cylinder two, and cylinder three are machined on the round bar. Then, a ball head and connecting rod are machined at the front end of cylinder one. Finally, a flat surface is machined on the front side of cylinder three. After machining the block to the required size, a round hole is drilled in the middle of the rear.

[0007] Furthermore, in step one, the process parameters of the welding equipment, including axial pressure and welding temperature, are monitored by an industrial control computer.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention uses two small iron blocks to be fixedly connected by friction welding, and then machined into finished products, which greatly improves the material utilization rate and greatly reduces the cost. Moreover, the connection surface between the two is better and the conductivity is better after friction welding. The present invention fixes the round bar on the upper side of the side of the square block, which has high processing precision. The present invention uses an industrial control computer to monitor the friction welding equipment to ensure the stability of the welding process. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 . Detailed Implementation

[0010] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0011] Please see Figures 1 to 3 The present invention provides a technical solution as follows: a plug-in terminal between a battery and a motor, comprising a square block 1 and a round rod 2, both of which are iron blocks. When connected, they can conduct electricity. One side of the square block 1 and one end of the round rod 2 are fixed by friction welding, with the round rod 2 located on top of the square block 1. Compared to ordinary welding methods, this solution provides better connection and fixation between the contact surfaces of the square block 1 and the round rod 2, better conductivity, and higher positional accuracy. The round rod 2, from its end towards the connection point with the square block 1, is sequentially provided with a ball head 21, a round... Column 1 22, Column 2 23 and Column 3 24, Ball head 21, Column 1 22, Column 2 23 and Column 3 24 are plug-in parts with gradually increasing diameters. The plug-in part is adapted to the matching parts and the plug-in is stable. A round hole 11 is opened in the middle of the rear part of the block 1. The round hole 11 is convenient for the plug-in terminal to be positioned and fixed on the battery. In this embodiment, two small parts are connected by friction welding. Compared with the original method of using a large square ingot to initially process into the shape of block 1 and round bar 2 after welding, this embodiment has a higher material utilization rate.

[0012] Specifically, a plane 25 is provided on the side of cylinder 3 24 near cylinder 2 23, which serves as a guide to determine the direction and facilitate the quick and accurate insertion of the connector into the opposing part. A connecting rod 26 is provided between the ball head 21 and cylinder 1 22. The diameter of the connecting rod 26 is smaller than that of the ball head 21, so that the connector can be firmly engaged with the opposing part after insertion and will not come out. Cylinder 1 22, cylinder 2 23 and cylinder 3 24 are connected smoothly at an angle, so that the connector can be inserted smoothly.

[0013] Another technical solution is: a method for processing a connector terminal between a battery and a motor, the method comprising the following steps: Step 1: Fixing by friction welding Apply a certain axial pressure to the block 1 and the round bar 2 at the place where they need to be fixed and make the contact surface move by friction. After heating the contact surface to the welding temperature, stop the movement. Then apply upsetting pressure to the block 1 and the round bar 2 respectively, so that the block 1 and the round bar 2 will undergo plastic deformation. After cooling, they are welded together. Step 2: Machining First, cylinder 1 22, cylinder 23 and cylinder 3 24 are machined on the round bar 2. Then, ball head 21 and connecting rod 26 are machined at the front end of cylinder 1 22. Finally, plane 25 is machined on the front side of cylinder 3 24. After the cube 1 is machined to the required size, a round hole 11 is drilled in the middle of the rear.

[0014] Specifically, in step one, the process parameters of the welding equipment, including axial pressure and welding temperature, are monitored by an industrial control computer to ensure the stability of the welding process.

[0015] The principle of this invention is as follows: after the plug-in terminal is positioned through the round hole 11, it is fixed to the battery by a fixing pin or other fixing parts. Then the plug-in part on the plug-in terminal can be inserted into the counterpart component to supply power to the counterpart component.

[0016] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. 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. A connector terminal between a battery and a motor, comprising a square block (1) and a round rod (2), characterized in that, One side of the block (1) and one end of the round rod (2) are fixed by friction welding, and the round rod (2) is located on the upper side of the block (1). The round rod (2) is provided with a ball head (21), a cylinder one (22), a cylinder two (23) and a cylinder three (24) in sequence from the end to the connection with the block (1). The ball head (21), cylinder one (22), cylinder two (23) and cylinder three (24) are plug-in parts and their diameters gradually increase. A round hole (11) is opened in the middle of the rear part of the block (1).

2. The plug-in terminal between a battery and a motor according to claim 1, characterized in that, A plane (25) is provided on the side of the cylinder three (24) near the cylinder two (23) and extends downwards. A connecting rod (26) is provided between the ball head (21) and the cylinder one (22). The diameter of the connecting rod (26) is smaller than that of the ball head (21). The cylinder one (22), cylinder two (23) and cylinder three (24) are connected smoothly at an oblique angle.

3. A method for processing a connector terminal between a battery and a motor, characterized in that, The processing method includes the following steps: Step 1: Fixing by friction welding Apply a certain axial pressure to the block (1) and the round bar (2) at the place where they need to be fixed and make the contact surface move by friction. After heating the contact surface to the welding temperature, stop the movement. Then apply upsetting pressure to the block (1) and the round bar (2) respectively, so that the block (1) and the round bar (2) undergo plastic deformation. After cooling, they are welded together. Step 2: Machining First, cylinder one (22), cylinder two (23) and cylinder three (24) are machined on the round bar (2). Then, ball head (21) and connecting rod (26) are machined at the front end of cylinder one (22). Finally, a flat surface (25) is machined on the front side of cylinder three (24). Finally, after the block (1) is machined to the required size, a round hole (11) is drilled in the middle of the rear.

4. The processing method of the plug-in terminal between the battery and the motor according to claim 3, characterized in that, In step one, the process parameters of the welding equipment, including axial pressure and welding temperature, are monitored by an industrial control computer.

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