Square battery top cover pole welding down pressure tooling

Abstract

The utility model discloses a square battery top cover pole welding down -pressing frock relates to battery production technical field, including down -pressing block and down -pressing movable board, and down -pressing movable board and down -pressing block are fixedly connected through the fixed part floating type between, and a plurality of elastic members are installed between down -pressing movable board and down -pressing block. Effectively guarantee the whole mechanism to press down when down -pressing block and center pole are even forced simultaneously, avoid the center stress too big, lead to the height of pole welding and down -pressing block appear the lower limit situation of partiality, improved the welding effect, effectively increased the qualified rate of product production and manufacture.

Description

Technical Field

[0001] This utility model belongs to the field of battery manufacturing technology, and specifically relates to a pressing tool for welding the terminal posts of a square battery top cover. Background Technology

[0002] In the manufacturing process of square batteries, the welding quality of the top cover terminals directly affects the battery's electrical performance and structural stability. The height difference between the upper surface of the terminal and the cover plate is a key technical indicator that must be strictly controlled within the range specified by the customer. Currently, the terminal welding fixtures commonly used in the industry mostly employ an integral structure for the lower pressure block. During the welding process, when the entire mechanism applies downward pressure, due to the force concentration effect, the pressure borne by the central terminal is significantly greater than that of other areas of the top cover.

[0003] Excessive local pressure can cause excessive deformation of the terminal block during welding, resulting in a lower limit for the height from the upper surface of the terminal block to the cover plate, exceeding the acceptable range. Actual production data shows that tooling using an integral pressure block frequently results in excessive terminal block height differences, leading to a low product qualification rate. This makes it difficult to meet customers' technical requirements for precision battery manufacturing, and in severe cases, it may even affect the subsequent assembly and safety of the battery during use. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a square battery top cover electrode welding pressing tool to solve the problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A square battery top cover electrode welding pressing tool includes a pressing block and a pressing movable plate. The pressing movable plate and the pressing block are floatingly fixedly connected by fasteners. Multiple sets of elastic elements are installed between the pressing movable plate and the pressing block.

[0007] Preferably, the lower pressure block and the lower pressure movable plate are provided with a central hole through the center line, and multiple sets of elastic elements are distributed circumferentially along the central hole.

[0008] Preferably, it also includes a mounting plate, on which two sets of central poles are symmetrically mounted, and two sets of downward movable plates are fixedly mounted on the mounting plate, with the two sets of central poles respectively inserted into the central holes.

[0009] Preferably, the distance between any two adjacent sets of elastic elements is equal.

[0010] Preferably, the fastener includes multiple sets of shoulder bolts, which are evenly distributed around the periphery of multiple sets of elastic elements.

[0011] Preferably, the elastic element includes a rectangular spring, and a third mounting hole is provided on the lower pressure block. The opening of the third mounting hole faces the lower pressure movable plate, and the rectangular spring is fixedly inserted into the third mounting hole and its top end is fixed or abuts against the lower pressure movable plate.

[0012] This utility model proposes a square battery top cover electrode welding pressing fixture, which effectively ensures that the pressing block and the central electrode are subjected to uniform force simultaneously when the entire mechanism is pressed down, avoiding excessive force on the center, which would cause the height of the electrode and the pressing block to deviate from the lower limit after welding. This improves the welding effect and effectively increases the pass rate of product manufacturing.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a square battery top cover electrode welding pressing tool installed on a mounting plate, as proposed in this utility model.

[0015] Figure 2 This is a three-dimensional structural diagram of a square battery top cover electrode welding pressing tool proposed in this utility model;

[0016] Figure 3 A three-dimensional structural diagram of the pressing movable plate of a square battery top cover electrode welding pressing tool proposed in this utility model;

[0017] Figure 4 A three-dimensional structural diagram of the pressing block of a square battery top cover electrode welding pressing tool proposed in this utility model;

[0018] Figure 5 for Figure 2 A cross-sectional view along the AA direction;

[0019] Figure 6 for Figure 2 A cross-sectional view along the BB direction.

[0020] Reference numerals: 1. Mounting plate; 11. Center pole; 2. Lowering movable plate; 21. First mounting hole; 22. Second mounting hole; 3. Lowering block; 31. Third mounting hole; 32. Fourth mounting hole; 4. Elastic element; 41. Rectangular spring; 5. Fixing element; 51. Shoulder bolt; 6. Center hole. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] Example 1

[0023] refer to Figures 1 to 6 The square battery top cover electrode welding pressing fixture described in this embodiment includes a mounting plate 1. Compared with the traditional one-piece fixed pressing plate, two sets of pressing movable plates 2 are symmetrically installed on the mounting plate 1. The pressing movable plates 2 are provided with first mounting holes 21. The pressing movable plates 2 are fixedly installed on the mounting plate 1 through the first mounting holes 21 and bolts. The bottom end of the pressing movable plates 2 is floatingly fixedly connected to a pressing block 3 through a fixing member 5. The pressing block 3 and the pressing movable plates 2 are provided with a central hole 6 through the center line. The central electrode 11 on the mounting plate 1 is respectively inserted into the two sets of symmetrical central holes 6. Multiple sets of elastic members 4 are installed around the central holes 6.

[0024] Preferably, the fixing member 5 includes multiple sets of shoulder bolts 51, the lower pressure block 3 has a fourth mounting hole 32, and the lower pressure movable plate 2 has a second mounting hole 22. The shoulder bolts 51 are inserted into the second mounting hole 22 and the fourth mounting hole 32. When the mounting plate 1 is not pressed down, the lower pressure block 3 is suspended on the lower pressure movable plate 2.

[0025] Preferably, the four sets of shoulder bolts 51 are evenly distributed around the periphery of the multiple sets of elastic elements 4.

[0026] The thickness of the pressure block 3 is greater than that of a traditional one-piece pressure block. The elastic element 4 includes a rectangular spring 41 for heavy loads. A third mounting hole 31 is provided on the pressure block 3. The rectangular spring 41 is fixedly inserted into the third mounting hole 31 and its top end is fixed or abuts against the pressure plate 2. When the mounting plate 1 is not pressed down, the rectangular spring 41 naturally extends. When the mounting plate 1 is pressed down, the rectangular spring 41 is compressed.

[0027] Preferably, the distance between any two adjacent sets of rectangular springs 41 is equal. In the traditional structure, if the total force of the entire pressing mechanism remains constant, excessive force on the center of the pole column will result in insufficient force on the top cover plate. In this structure, the pressing movable plate 2 presses down, causing the shoulder bolt 51 to slide downward, and multiple sets of rectangular springs 41 cause the pressing block 3 to be pressed down evenly.

[0028] This tooling effectively ensures that the lower pressure block 3 and the central pole are subjected to uniform force when the entire mechanism is pressed down, avoiding excessive force on the center, which would cause the height of the pole and the lower pressure block 3 to deviate from the lower limit after welding. This improves the welding effect and effectively increases the pass rate of product manufacturing.

[0029] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A square battery top cover post welding down-pressing tool, characterized in that: It includes a lower pressure block (3) and a lower pressure movable plate (2). The lower pressure movable plate (2) and the lower pressure block (3) are connected in a floating manner by a fastener (5). Multiple sets of elastic elements (4) are installed between the lower pressure movable plate (2) and the lower pressure block (3).

2. The square battery top cover electrode welding pressing fixture according to claim 1, characterized in that: The pressure block (3) and the pressure movable plate (2) are provided with a central hole (6) through the center line, and multiple sets of elastic elements (4) are distributed circumferentially along the central hole (6).

3. The square battery top cover pole welding down-pressing tooling according to claim 2, characterized in that: It also includes a mounting plate (1), on which two sets of central poles (11) are symmetrically mounted, and two sets of downward movable plates (2) are fixedly mounted on the mounting plate (1), and the two sets of central poles (11) are respectively inserted into the central hole (6).

4. The square battery top cover post welding down-pressing tooling as claimed in claim 1, wherein: The distance between any two adjacent sets of elastic elements (4) is equal.

5. The square battery top cover electrode welding pressing fixture according to claim 1, characterized in that: The fastener (5) includes multiple sets of shoulder bolts (51), which are evenly distributed around the periphery of multiple sets of elastic elements (4).

6. The square battery top cover post welding down-pressing tooling as claimed in claim 1, wherein: The elastic element (4) includes a rectangular spring (41), and a third mounting hole (31) is provided on the lower pressure block (3). The opening of the third mounting hole (31) faces the lower pressure movable plate (2). The rectangular spring (41) is fixedly inserted into the third mounting hole (31) and its top end is fixed or abuts against the lower pressure movable plate (2).

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