Lithium battery protection plate welding positioning clamp

Abstract

The utility model discloses a lithium battery protection plate welding positioning clamp which comprises a rectangular bottom support and vertical supports fixedly connected to the four corners of the rectangular bottom support, positioning screw rods are arranged on the vertical supports, a rectangular pressing frame is arranged above the rectangular bottom support, through holes are formed in the four corners of the rectangular pressing frame, and the positioning screw rods can be sleeved with the through holes. And movable pressing blocks are arranged on the inner sides of the four corners of the rectangular pressing frame, the two adjacent outer walls of the movable pressing blocks are attached to the two adjacent inner walls of the corners of the rectangular pressing frame, the upper ends of the movable pressing blocks are fixedly connected with connecting plates, and the connecting plates are elastically connected with the rectangular pressing frame. According to the welding positioning clamp for the lithium battery protection plate, the lithium battery protection plate needing to be welded can be elastically buckled and pressed on the lithium battery main body, so that the process of welding the lithium battery protection plate on the lithium battery main body is more stable.

Description

A lithium battery protection board welding positioning fixture Technical Field

[0001] This utility model relates to the field of lithium battery processing and assembly, specifically to a lithium battery protection board welding positioning fixture. Background Technology

[0002] The core function of a lithium battery protection board is to ensure that the lithium battery pack operates within a safe range, preventing dangerous situations such as overcharging, over-discharging, overcurrent, and short circuits, while extending battery life and ensuring safe use. During assembly, it needs to be welded to the top of the lithium battery body. To ensure accurate welding positioning and a stable welding process, a lithium battery protection board welding positioning fixture is required.

[0003] Chinese patent CN218592174U discloses a welding mechanism for a lithium battery protection board, including a support plate. Support feet are fixed on both the left and right sides of the lower surface of the support plate, and support rods are fixed on both the left and right sides of the upper surface of the support plate. A movable welding mechanism for welding the lithium battery protection board in the front, back, left, and right directions is provided on the lower surface of the fixed plate. A fume extraction mechanism for removing fumes generated during welding of the lithium battery protection board is provided on the upper surface of the fixed plate. A placement pad is fixed on the upper surface of the support plate and between the two support rods on opposite sides.

[0004] The welding mechanism of this lithium battery protection board uses a pad on a support plate to place the lithium battery body and then places the lithium battery protection board directly on the lithium battery body for welding. However, it lacks a clamping structure to position the lithium battery protection board, which leads to low stability during the welding process. Summary of the Invention

[0005] The purpose of this utility model is to provide a lithium battery protection board welding positioning fixture, which can elastically press the lithium battery protection board to be welded onto the lithium battery body, making the process of welding the lithium battery protection board onto the lithium battery body more stable.

[0006] To achieve the above objectives, this utility model provides a lithium battery protection board welding positioning fixture, including a rectangular base and vertical supports fixed to the four corners of the rectangular base. Positioning screws are provided on the vertical supports. A rectangular pressure frame is provided above the rectangular base. Through holes for fitting the positioning screws are provided at the four corners of the rectangular pressure frame. Nuts are screwed onto the positioning screws. Movable pressure blocks are provided on the inner sides of the four corners of the rectangular pressure frame. Two adjacent outer walls of the movable pressure blocks are attached to two adjacent inner walls at the corners of the rectangular pressure frame. A connecting plate is fixed to the upper end of the movable pressure blocks, and the connecting plate is elastically connected to the rectangular pressure frame.

[0007] Preferably, three light rods are arranged in a triangular distribution on the upper surface of the four corners of the rectangular pressure frame, light holes are provided on the connecting plate and slidably sleeved on the light rods, a limit plate is provided on the top of the light rods, and a spring is sleeved on the light rods between the limit plate and the connecting plate.

[0008] Preferably, a limiting angle groove is provided on the bottom surface of the inner end of the movable pressure block.

[0009] Preferably, the inner side of the rectangular base is provided with a lithium battery body positioning step groove.

[0010] Preferably, the bottom surface of the rectangular base is provided with multiple support feet.

[0011] Preferably, the rectangular pressure frame has upwardly arched handles at both ends.

[0012] Preferably, the two ends of the rectangular pressure frame are provided with notches below the handle.

[0013] According to the above technical solution, this utility model provides a lithium battery protection board welding positioning fixture, including a rectangular base and vertical supports fixed to the four corners of the rectangular base. Positioning screws are provided on the vertical supports. A rectangular pressure frame is provided above the rectangular base. Through holes for fitting the positioning screws are provided at the four corners of the rectangular pressure frame. Nuts are screwed onto the positioning screws. Movable pressure blocks are provided on the inner sides of the four corners of the rectangular pressure frame. Two adjacent outer walls of the movable pressure blocks are attached to two adjacent inner walls at the corners of the rectangular pressure frame. A connecting plate is fixed to the upper end of the movable pressure blocks, and the connecting plate is elastically connected to the rectangular pressure frame.

[0014] The lithium battery protection board welding positioning fixture has the following beneficial effects: 1. When welding the lithium battery protection board to the lithium battery body, the lithium battery body is first placed upright on the rectangular base, and then the lithium battery protection board is aligned and pressed onto the upper end of the lithium battery body by the movable pressure block on the rectangular pressure frame. Finally, the two are welded together by special welding equipment. The cooperation of the rectangular base and the rectangular pressure frame can stably press the lithium battery protection board and the lithium battery body together, which is convenient for welding and improves welding stability; 2. Through the elastic connection between the connecting plate and the rectangular pressure frame, the movable pressure block is used as the contact structure for pressing on the lithium battery protection board, so that the lithium battery protection board is always in an elastic pressing state, avoiding damage to the pressing part of the lithium battery protection board caused by hard pressing.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 is a top view of a preferred embodiment of the lithium battery protection board welding positioning fixture;

[0018] Figure 2 is a bottom view of a preferred embodiment of the lithium battery protection board welding positioning fixture;

[0019] Figure 3 is a top view of a preferred embodiment of the lithium battery protection board welding positioning fixture;

[0020] Figure 4 is a magnified schematic diagram of a portion of region A in Figure 1.

[0021] Explanation of reference numerals in the attached figures

[0022] 1-Rectangular base; 2-Vertical support; 3-Support foot; 4-Notch; 5-Lithium battery main body positioning step groove; 6-Rectangular pressure frame; 7-Handle; 8-Positioning screw; 9-Nut; 10-Modible pressure block; 11-Limiting angle groove; 12-Connecting plate; 13-Limiting plate; 14-Smooth rod; 15-Spring. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0024] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0025] Referring to Figures 1-4, the lithium battery protection board welding positioning fixture includes a rectangular base 1 and vertical supports 2 fixed to the four corners of the rectangular base 1. Positioning screws 8 are provided on the vertical supports 2. A rectangular pressure frame 6 is provided above the rectangular base 1. Through holes for fitting the positioning screws 8 are provided at the four corners of the rectangular pressure frame 6. Nuts 9 are screwed onto the positioning screws 8. Movable pressure blocks 10 are provided on the inner sides of the four corners of the rectangular pressure frame 6. Two adjacent outer walls of the movable pressure blocks 10 are attached to two adjacent inner walls at the corners of the rectangular pressure frame 6. A connecting plate 12 is fixed to the upper end of the movable pressure blocks 10, and the connecting plate 12 is elastically connected to the rectangular pressure frame 6.

[0026] By implementing the above technical solution, when welding the lithium battery protection board onto the lithium battery body, the lithium battery body is first placed upright on the rectangular base 1. Then, the lithium battery protection board is aligned and pressed onto the upper end of the lithium battery body by the movable pressure block 10 on the rectangular pressure frame 6. Finally, the two are welded together using a special welding device. The cooperation between the rectangular base 1 and the rectangular pressure frame 6 can stably press the lithium battery protection board and the lithium battery body together, which facilitates welding and improves welding stability. Through the elastic connection between the connecting plate 12 and the rectangular pressure frame 6, the movable pressure block 10 is used as the contact structure for pressing on the lithium battery protection board, so that the lithium battery protection board is always in an elastic pressing state. Since the welding alignment of the lithium battery protection board does not require too much pressing force, damage to the pressing part of the lithium battery protection board caused by hard pressing is avoided.

[0027] In this embodiment, to further provide an elastic connection between the connecting plate 12 and the limiting plate 13, three light rods 14 are arranged in a triangular distribution on the upper surface of the four corners of the rectangular pressure frame 6. The connecting plate 12 has light holes that slide onto the light rods 14. The top of the light rod 14 is provided with a limiting plate 13, and a spring 15 is sleeved on the light rod 14 between the limiting plate 13 and the connecting plate 12. When the movable pressure block 10 is pressed against the lithium battery protection board, the movable pressure block 10 compresses the spring 15, and the spring 15 is in a compressed state.

[0028] In this embodiment, a limiting corner groove 11 is provided on the bottom surface of the inner end of the movable pressure block 10. By setting multiple limiting corner grooves 11 on multiple movable pressure blocks 10, several corners of the lithium battery protection board are limited, and the structure of the limiting corner groove 11 matches the structure of several corners of the lithium battery protection board.

[0029] In this embodiment, a lithium battery body positioning step groove 5 is provided on the inner side of the rectangular base 1. This implementation uses the lithium battery body positioning step groove 5 to position the bottom of the lithium battery body, thus determining the position of the lithium battery body and improving the accuracy of the welding position.

[0030] In this embodiment, the bottom surface of the rectangular base 1 is provided with multiple support feet 3. This arrangement provides stable support for the rectangular base 1.

[0031] In this embodiment, the rectangular pressure frame 6 is provided with upwardly arched handles 7 at both ends. The handles 7 at both ends make it convenient to hold and grasp the rectangular pressure frame 6.

[0032] In this embodiment, the rectangular pressure frame 6 has notches 4 at both ends below the handle 7. This design allows for a spacious bottom when gripping the handle 7, increasing hand movement area.

[0033] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0034] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0035] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A welding positioning fixture for a lithium battery protection board, characterized in that, The device includes a rectangular base (1) and vertical supports (2) fixed to the four corners of the rectangular base (1). The vertical supports (2) are provided with positioning screws (8). A rectangular pressure frame (6) is provided above the rectangular base (1). The four corners of the rectangular pressure frame (6) are provided with through holes that can be fitted onto the positioning screws (8). Nuts (9) are screwed onto the positioning screws (8). Movable pressure blocks (10) are provided on the inner sides of the four corners of the rectangular pressure frame (6). Two adjacent outer walls of the movable pressure blocks (10) are attached to two adjacent inner walls at the corners of the rectangular pressure frame (6). A connecting plate (12) is fixed to the upper end of the movable pressure blocks (10). The connecting plate (12) is elastically connected to the rectangular pressure frame (6).

2. The lithium battery protection board welding positioning fixture according to claim 1, characterized in that, The rectangular pressure frame (6) has three light rods (14) arranged in a triangular pattern on the upper surface of its four corners. The connecting plate (12) has light holes that slide on the light rods (14). The top of the light rod (14) is provided with a limiting plate (13). A spring (15) is sleeved on the light rod (14) between the limiting plate (13) and the connecting plate (12).

3. The lithium battery protection board welding positioning fixture according to claim 1, characterized in that, The bottom surface of the inner end of the movable pressure block (10) is provided with a limiting angle groove (11).

4. The lithium battery protection board welding positioning fixture according to claim 1, characterized in that, The inner side of the rectangular base (1) is provided with a lithium battery body positioning step groove (5).

5. The lithium battery protection board welding positioning fixture according to claim 1, characterized in that, The bottom surface of the rectangular base (1) is provided with multiple support feet (3).

6. The lithium battery protection board welding positioning fixture according to claim 1, characterized in that, The rectangular pressure frame (6) is provided with upward-arched handles (7) at both ends.

7. The lithium battery protection board welding positioning fixture according to claim 6, characterized in that, The rectangular pressure frame (6) has notches (4) at both ends located below the handle (7).

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