High-strength pin welding structure

Abstract

The utility model discloses a high-strength pin welding structure, which comprises a pin body and a connecting plate, the top of the pin body is provided with the connecting plate, the top surface of the connecting plate is provided with a mounting hole, the right side wall surface of the mounting hole is a straight section surface, the rest hole wall is an arc-shaped surface, the straight section surface is parallel to the bending direction of the pin body, and the right side wall surface is parallel to the bending direction of the pin body. According to the high-strength pin welding structure, the problems that most of the existing full-tab battery top cover pins are matched with the pole for welding connection, circular matching is adopted at the connecting parts, and the welding connection is difficult to realize are solved; a circular welding tangency point part is easy to crack under stress, so that the internal strength of a battery cell is low, and the battery cell cannot be used in an environment with large vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of pin structures, in particular to a high-strength pin welding structure. Background Art

[0002] The top cover pin of a full-tab battery is an important component of the battery structure for current output. It usually contains multiple functions to ensure the safety and performance of the battery. The full-tab battery design increases the current path and shortens the tab spacing by directly drawing current from the positive or negative current collector, thereby increasing the power of the battery. This design simplifies the assembly welding process and does not require die-cutting of the uncoated current collector. Instead, the blank area of ​​the positive or negative electrode is welded to the tab by ultrasonic welding.

[0003] At present, most of the pins on the top cover of full-tab batteries are connected by welding with the poles. The connection parts are circular, and the circular welding cut points are prone to cracking under stress, resulting in low internal strength of the battery cell and cannot be used in an environment with high vibration.

[0004] Therefore, it is necessary to provide a high-strength pin welding structure to solve the above technical problems. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a high-strength pin welding structure to solve the problem that most of the existing full-tab battery top cover pins are connected by welding with the pole, and the connection parts adopt a circular fit. The circular welding cut point is easily cracked under stress, resulting in low internal strength of the battery cell and cannot be used in an environment with high vibration.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A high-strength pin welding structure, comprising: a pin body, a connecting plate;

[0008] The top of the pin body is a connecting plate, and a mounting hole is provided on the top surface of the connecting plate. The right side wall of the mounting hole is a straight section surface, and the remaining hole wall is an arc surface. The straight section surface is parallel to the bending direction of the pin body. A positioning hole is provided on the right side of the mounting hole, and the positioning hole is used to provide positioning when the pole is inserted.

[0009] In one embodiment, rectangular openings are formed on two sides of the positioning hole.

[0010] In one embodiment, the inner wall surface of the connection between the pin body and the connecting plate is an arc segment, and a reinforcing rod is installed at the diagonal of the arc segment. One end of the reinforcing rod is welded to the bottom surface of the connecting plate, and the other end is welded to the inner wall surface of the pin body in a twisted form. The reinforcing rod is located on the right bottom surface of the positioning hole, and four of the reinforcing rods are arranged at intervals.

[0011] In one embodiment, auxiliary rods are installed on the left circumference of the two middle reinforcing rods. The auxiliary rods are arranged to be inclined upward, and the two auxiliary rods are located below the two rectangular openings.

[0012] In one embodiment, the other end of the auxiliary rod is welded to the straight side of the reinforcement frame, the shape of the reinforcement frame is consistent with the shape of the mounting hole, and the top surface of the reinforcement frame is welded to the bottom surface of the mounting hole.

[0013] The beneficial effects of the utility model are as follows:

[0014] (1) The reinforcing frame provides tear protection for the surrounding surface of the mounting hole to prevent the hole surface around the pole from being torn in a vibration environment. The reinforcing rod provides auxiliary tensile protection for the welding part of the pin body and the connecting plate, and provides auxiliary limit support when the connection between the two vibrates. When the positioning rod of the pole is inserted into the positioning hole, the corresponding rectangular blocks on both sides are pressed against the top surface of the auxiliary rod. While completing the positioning, the auxiliary rod can provide auxiliary support force, thereby making the pole installation more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall structure diagram of the utility model;

[0016] Figure 2 This is a top view detail diagram of the connection plate of the utility model;

[0017] Figure 3 This is a front view detail diagram of the overall structure of the utility model;

[0018] Figure 4 This is a detailed upward view of the overall structure of the utility model.

[0019] Among them, the names corresponding to the figure marks are: pin body 1, connecting plate 2, mounting hole 21, straight section surface 22, positioning hole 23, rectangular opening 24, arc segment 3, reinforcing rod 4, auxiliary rod 5, reinforcing frame 6. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0021] like Figure 1-Figure 2 As shown, the utility model provides a high-strength pin welding structure, comprising: a pin body 1, a connecting plate 2;

[0022] like Figure 1-Figure 2As shown, the top of the pin body 1 is a connecting plate 2, and a mounting hole 21 is provided on the top surface of the connecting plate 2. The right side wall of the mounting hole 21 is a straight section surface 22, and the remaining hole wall is an arc surface. The straight section surface 22 is parallel to the bending direction of the pin body 1. When the pin is subjected to force, the welding part is subjected to linear force, and the relative tangent point force area is increased to improve the pin welding strength. A positioning hole 23 is provided on the right side of the mounting hole 21. The positioning hole 23 is used to provide positioning when the pole is inserted to avoid rotational offset.

[0023] Preferably, in one embodiment, Figure 1-Figure 2 As shown, rectangular openings 24 are formed on both sides of the positioning hole 23 .

[0024] Preferably, in one embodiment, Figure 3-Figure 4 As shown, the inner wall surface of the connection between the pin body 1 and the connecting plate 2 is an arc segment 3, and a reinforcing rod 4 is installed at the diagonal of the arc segment 3. One end of the reinforcing rod 4 is welded to the bottom surface of the connecting plate 2, and the other end is welded to the inner wall surface of the pin body 1 in a twisted form. The reinforcing rod 4 is located on the right bottom surface of the positioning hole 23, and four of the reinforcing rods 4 are arranged at intervals.

[0025] Preferably, in one embodiment, Figure 3-Figure 4 As shown, auxiliary rods 5 are installed on the left circumference of the two middle reinforcing rods 4. The auxiliary rods 5 are arranged to be inclined upward. The two auxiliary rods 5 are located below the two rectangular openings 24. When the positioning rod of the pole is inserted into the positioning hole 23, the corresponding rectangular blocks on both sides are pressed against the top surface of the auxiliary rods 5. While completing the positioning, the auxiliary rods 5 can provide auxiliary supporting force, thereby making the pole installation more stable.

[0026] Preferably, in one embodiment, Figure 3-Figure 4 The other end of the auxiliary rod 5 is welded to the straight side of the reinforcement frame 6. The shape of the reinforcement frame 6 is consistent with the shape of the mounting hole 21. The top surface of the reinforcement frame 6 is welded to the bottom surface of the mounting hole 21. The reinforcement frame 6 provides tearing protection for the surrounding surface of the mounting hole 21 to prevent the hole surface around the pole from being torn in a vibration environment.

[0027] Working principle of this utility model:

[0028] During operation, the reinforcing frame 6 provides tearing protection for the surrounding surface of the mounting hole 21 to prevent the hole surface around the pole from being torn in a vibration environment. The reinforcing rod 4 provides auxiliary tensile protection for the welding point of the pin body 1 and the connecting plate 2, and provides auxiliary limiting support when the connection between the two vibrates. When the positioning rod of the pole is inserted into the positioning hole 23, the corresponding rectangular blocks on both sides are crimped onto the top surface of the auxiliary rod 5. While completing the positioning, the auxiliary rod 5 can provide auxiliary supporting force, thereby making the pole installation more stable.

[0029] The above embodiment is only one of the preferred implementation modes of the present utility model and should not be used to limit the protection scope of the present utility model. Any changes or modifications that are made to the main design concept and spirit of the present utility model without any substantive significance, as long as the technical problems solved are still consistent with the present utility model, should be included in the protection scope of the present utility model.

Claims

1. A high-strength pin welding structure, characterized in that: include: Pin body, connecting plate; The top of the pin body is a connecting plate, and a mounting hole is provided on the top surface of the connecting plate. The right side wall of the mounting hole is a straight section surface, and the remaining hole wall is an arc surface. The straight section surface is parallel to the bending direction of the pin body. A positioning hole is provided on the right side of the mounting hole, and the positioning hole is used to provide positioning when the pole is inserted.

2. A high-strength pin welding structure according to claim 1, characterized in that: Rectangular openings are formed on both sides of the positioning hole.

3. A high-strength pin welding structure according to claim 2, characterized in that: The inner wall surface of the connection between the pin body and the connecting plate is an arc segment, and a reinforcing rod is installed at the diagonal of the arc segment. One end of the reinforcing rod is welded to the bottom surface of the connecting plate, and the other end is welded to the inner wall surface of the pin body in a twisted form. The reinforcing rod is located on the right bottom surface of the positioning hole, and four of the reinforcing rods are arranged at intervals.

4. A high-strength pin welding structure according to claim 3, characterized in that: Auxiliary rods are installed on the left circumference of the two middle reinforcing rods. The auxiliary rods are arranged upwardly in an inclined manner. The two auxiliary rods are located below the two rectangular openings.

5. A high-strength pin welding structure according to claim 4, characterized in that: The other end of the auxiliary rod is welded to the straight side of the reinforcement frame, the shape of the reinforcement frame is consistent with the shape of the mounting hole, and the top surface of the reinforcement frame is welded to the bottom surface of the mounting hole.

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