Battery cell tab connecting and positioning clamp
By designing a battery cell tab connection and positioning fixture, the problem of needing to replace the splint when welding different types of batteries in the existing technology is solved, achieving efficient and low-cost battery welding, and is suitable for a variety of battery cell models.
Patent Information
- Application Number
- CN202422442328.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-10-10
AI Technical Summary
In existing battery production, the shape and size of the splint are fixed, which means that the splint needs to be replaced when welding different types of batteries. This is inconvenient to use, has low welding efficiency, high labor intensity and high cost.
A battery cell tab connection and positioning fixture is designed, which includes at least two base plates, a base plate spacing adjustment component, a tab limit component and a battery cell limiting component. It can adjust the spacing according to the battery cell size, fix the position of the tab and the battery cell, and provide welding space.
It realizes the welding of different types of batteries without changing the fixture, improves welding efficiency, reduces costs, expands the scope of application, and simplifies the process steps.
Smart Images
Figure CN223476692U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power battery cell production technology, and in particular to a battery cell tab connection and positioning fixture. Background Technology
[0002] A battery is a device used to store electrical energy, mainly consisting of a cell, tabs, and positive and negative electrode plates. During battery production, the positive and negative electrode plates of the cell need to be welded together with the tabs. Ultrasonic welding is preferred for this purpose, as the welding quality directly affects many performance characteristics of lithium-ion batteries.
[0003] During welding, some existing methods involve positioning the battery cell in a clamp, then aligning the tabs with the positive and negative plates of the battery cell before welding.
[0004] The drawbacks of this method include: the shape and size of the clamp are fixed and it can only weld one side of the tab. When welding different models of batteries, it is necessary to replace the clamp with a clamp of other shapes and sizes. When welding both sides of the tab, it is necessary to adjust the position of the battery cell in the clamp. It is inconvenient to use, has low welding efficiency, high labor intensity, and high cost. Utility Model Content
[0005] The purpose of this invention is to propose a cell tab connection positioning fixture, which solves the problem in the prior art that different sizes of fixtures need to be replaced for different battery models during welding, making it more convenient to use.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A battery cell tab connection and positioning fixture includes: at least two base plates, each base plate having a welding position for providing welding space for the battery cell and the tab; a base plate spacing adjustment assembly for adjusting the spacing between the at least two base plates; a tab limiting assembly for limiting the position of the tab; and a battery cell limiting assembly for limiting the position of the battery cell.
[0008] In one preferred embodiment, the base plate spacing adjustment assembly includes a slide rod, and a groove is provided on the back of the base plate. The slide rod is embedded in the groove, and the base plate can move along the slide rod.
[0009] In one preferred embodiment, the battery cell tab connection positioning fixture further includes a main support frame and a sliding bracket, the slide rod is disposed on the sliding bracket, and the sliding bracket can move along the main support frame.
[0010] In one preferred embodiment, the battery cell tab connection positioning fixture further includes a support slider, the sliding support being disposed on the support slider, and the support slider being movable along the main support frame.
[0011] In one preferred embodiment, the tab limiting assembly includes at least eight tab limiting sliders, wherein at least four of the tab limiting sliders are disposed on one of the base plates and at least four of the tab limiting sliders are disposed on another of the base plates.
[0012] In one preferred embodiment, the base plate is provided with a tab limiting groove, and the tab limiting slider is embedded in the tab limiting groove and can move along the tab limiting groove.
[0013] In one preferred embodiment, two tab limiting grooves are provided parallel to each other on the base plate, and the tab limiting slider is connected across the two tab limiting grooves.
[0014] In one preferred embodiment, the cell limiting assembly includes at least two cell limiting sliders, and a cell limiting groove is provided on the base plate. The cell limiting sliders are embedded in the cell limiting groove and can move along the cell limiting groove.
[0015] In one preferred embodiment, the tab limiting groove and the cell limiting groove are located on opposite sides of the welding position.
[0016] In one preferred embodiment, the welding position is a through hole or recess formed on the base plate.
[0017] The battery cell tab connection and positioning fixture disclosed in this utility model includes at least two base plates. The distance between two adjacent base plates can be adjusted according to the size of the battery cell. When the model of the battery cell to be welded changes, there is no need to replace the fixture, making it more convenient to use and improving welding efficiency. One battery cell tab connection and positioning fixture can be used for welding various models of battery cells, with a wide range of applications. It eliminates the need for multiple fixtures of different sizes, reducing costs. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the usage state of the battery cell tab connection and positioning clamp provided in a specific embodiment of the present invention when welding on different sides;
[0019] Figure 2 This is a schematic diagram of the usage state of the battery cell tab connection positioning fixture provided in a specific embodiment of this utility model during welding on the same side;
[0020] Figure 3 This is a schematic diagram of the back structure of the base plate provided in a specific embodiment of this utility model;
[0021] Figure 4 This is a side view of the battery cell tab connection and positioning clamp provided in a specific embodiment of this utility model.
[0022] In the picture:
[0023] 1. Base plate; 2. Slide rod; 3. Main support frame; 4. Sliding bracket; 5. Bracket slider; 6. Electrode limit slider; 7. Cell limit slider; 11. Welding position; 12. Slide groove; 13. Electrode limit slide groove; 14. Cell limit slide groove;
[0024] 100, battery cell; 200, electrode tab. Detailed Implementation
[0025] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0027] 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.
[0028] 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 or an electrical connection; 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.
[0029] 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.
[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0031] This embodiment discloses a cell tab connection and positioning fixture for fixing the cell and the tab to facilitate welding them together. The cell can be, but is not limited to, a cell from a pouch lithium-ion battery. Figures 1 to 4 As shown, the battery cell tab connection positioning fixture includes at least two base plates 1, a base plate spacing adjustment assembly, a tab limiting assembly, and a battery cell limiting assembly. The base plate spacing adjustment assembly is used to adjust the spacing between at least two base plates 1, the tab limiting assembly is used to limit the position of the tab 200, and the battery cell limiting assembly is used to limit the position of the battery cell 100.
[0032] Each base plate 1 is provided with a welding position 11, which provides welding space for the battery cell 100 and the electrode tab 200. For example... Figure 1 As shown, when the two tabs 200 are located on opposite sides of the cell 100, one tab 200 can be welded to the cell 100 at welding position 11 on one base plate 1, and the other tab 200 can be welded to the cell 100 at welding position 11 on the other base plate 1. This eliminates the need to rotate the cell 100 after welding one tab 200 and then weld the other tab 200, simplifying the process and improving welding efficiency. Figure 2 As shown, when both tabs 200 are located on the same side of the cell 100, the two tabs 200 and the cell 100 can be welded to each other at the welding position 11 on a base plate 1.
[0033] In use, the connection point of the battery cell 100 and the tab 200 is placed within the welding position 11, and the welding device can easily weld the battery cell 100 and the tab 200 together. The spacing between two adjacent base plates 1 can be adjusted according to the size of the battery cell 100. When the model of the battery cell 100 to be welded changes, there is no need to change the fixture, making it more convenient to use and increasing welding efficiency. One battery cell tab connection positioning fixture can be used for welding various models of battery cells 100, with a wide range of applications. It eliminates the need for multiple fixtures of different sizes, reducing costs.
[0034] The specific shape of the welding position 11 is not limited, as long as it facilitates the welding device to weld the battery cell 100 and the tab 200 together. In this embodiment, the welding position 11 is a through hole or recess on the base plate 1. The through hole or recess is preferably elongated to provide more space for welding.
[0035] like Figures 1 to 4 As shown, the base plate spacing adjustment assembly includes a slide rod 2. A groove 12 is provided on the back of the base plate 1, and the slide rod 2 is embedded in the groove 12, allowing the base plate 1 to move along the slide rod 2. Specifically, the position of the base plate 1 on the slide rod 2 is adjusted according to the size of the battery cell 100, so that both ends of the battery cell 100 can be placed in suitable soldering positions on the base plate 1.
[0036] To improve the stability of the base plate 1, in this embodiment, the base plate spacing adjustment assembly includes two parallel sliding rods 2. Two parallel sliding grooves 12 are formed on the back of the base plate 1, and the welding position 11 is located between the two sliding grooves 12. Each sliding rod 2 is embedded in one of the sliding grooves 12. When moving, the two sliding rods 2 guide the base plate 1 together, preventing the base plate 1 from rotating laterally when moving along the sliding rods 2, making the movement of the base plate 1 more stable. During welding, the force exerted by the welding device on the battery cell 100 and the tab 200 can be distributed to the two sliding rods 2, resulting in a stronger load-bearing capacity.
[0037] The specific structure of the slide bar 2 is not limited, as long as it allows the base plate 1 to be adjusted in position. The slide bar 2 can be a fixed-length optical tube, which is easy to process and makes the base plate 1 move more smoothly when moving along the slide bar 2; the slide bar 2 can also be a telescopic rod, which reduces the space occupied when retracted and provides a longer moving distance for the base plate 1 when extended, making it suitable for as many different sizes of battery cells 100 as possible and providing a good user experience.
[0038] Based on the above structure, the battery cell tab connection positioning fixture also includes a main support frame 3 and a sliding bracket 4. The slide rod 2 is fixedly connected to the sliding bracket 4, and the sliding bracket 4 can move along the main support frame 3, thereby driving the base plate 1 to move along the main support frame 3 to find the precise welding position and improve the quality of the welding structure.
[0039] The specific method of driving the sliding bracket 4 to move along the main support frame 3 is not limited. The sliding bracket 4 can be manually pushed until it moves along the main support frame 3 to the target position; or a driving device such as an air pump can be connected to the main support frame 3 or the sliding bracket 4, and the driving device can automatically move the sliding bracket 4, making it more convenient to use.
[0040] The specific structure for achieving "the sliding bracket 4 can move along the main support frame 3" is not limited. It can be that the sliding bracket 4 is directly slidably connected to the main support frame 3, resulting in a simpler overall structure; alternatively, an intermediate structure can be set between the sliding bracket 4 and the main support frame 3 to reduce the structural complexity of the sliding bracket 4 and facilitate processing. In this embodiment, the battery cell tab connection positioning fixture also includes a bracket slider 5, on which the sliding bracket 4 is mounted, and the bracket slider 5 can move along the main support frame 3.
[0041] Based on the above structure, the tab limiting assembly includes at least eight tab limiting sliders 6. Among them, at least four tab limiting sliders 6 are disposed on one base plate 1, and at least four tab limiting sliders 6 are disposed on another base plate 1.
[0042] like Figure 1 As shown, when the two tabs 200 are located on both sides of the cell 100, one tab 200 is clamped between any two adjacent tab limiting sliders 6 of the four tab limiting sliders 6 on a base plate 1, and the other tab 200 is clamped between any two adjacent tab limiting sliders 6 of the four tab limiting sliders 6 on another base plate 1, and both tabs 200 are fixed. Figure 1 The diagram shows the electrode 200 being held using the two electrode limit sliders 6 located in the middle. Alternatively, the two electrode limit sliders 6 on the left or the two electrode limit sliders 6 on the right can also be used.
[0043] like Figure 2 As shown, when both tabs 200 are located on the same side of the cell 100, among the four tab limiting sliders 6 on a base plate 1, the two tab limiting sliders 6 on the left side clamp one tab 200 and the two tab limiting sliders 6 on the right side clamp the other tab 200, in preparation for welding the two tabs 200 to the same side of the cell 100.
[0044] like Figures 1 to 4 As shown, the base plate 1 has a tab limiting groove 13, and the tab limiting slider 6 is embedded in the tab limiting groove 13 and can move along the tab limiting groove 13. In this embodiment, the tab limiting slider 6 has a locking structure (not shown). After the tab limiting slider 6 moves to the target position, the locking structure can fix the tab limiting slider 6 in place, preventing the tab limiting slider 6 from moving accidentally and causing inaccurate limiting of the tab 200.
[0045] The specific shape of the tab limiting groove 13 is not limited, as long as it allows the tab limiting slider 6 to move along it. In this embodiment, two tab limiting grooves 13 are provided parallel to each other on the base plate 1. Each tab limiting slider 6 is connected across the two tab limiting grooves 13. When the tab limiting slider 6 slides along the two tab limiting grooves 13, it will not rotate laterally, and the movement of the tab limiting slider 6 is smoother.
[0046] Based on the above structure, the cell limiting assembly includes at least two cell limiting sliders 7. A cell limiting groove 14 is provided on the base plate 1, and the cell limiting sliders 7 are embedded in the cell limiting groove 14 and can move along the cell limiting groove 14. The cell limiting sliders 7 are arranged in pairs. When a cell 100 is placed between two cell limiting sliders 7, the cell limiting sliders 7 are attached to the side wall of the cell 100. Locking the cell limiting sliders 7 prevents them from moving further, thus preventing the cell 100 from detaching from the constraint of the cell limiting sliders 7.
[0047] In theory, two cell limiting sliders 7 located on both sides of the cell 100 can effectively limit the cell 100, which is convenient to use and inexpensive. In this embodiment, each base plate 1 is provided with two cell limiting sliders 7, and a total of four cell limiting sliders 7 on the two base plates 1 abut against the side walls of the cell 100 from both sides near the two ends, resulting in better fixation and preventing the cell 100 from rotating due to only having two cell limiting sliders 7.
[0048] In order not to affect the normal use of the welding position 11, the tab limiting slide 13 and the cell limiting slide 14 are located on opposite sides of the welding position 11, respectively, to ensure that the connection between the cell 100 and the tab 200 can be stably located at the welding position 11, making it more convenient to use.
[0049] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.
Claims
1. A battery cell tab connection and positioning fixture, characterized in that, include: At least two base plates (1) are provided with welding positions (11) for providing welding space for the battery cell (100) and the tab (200); A base plate spacing adjustment assembly for adjusting the spacing between at least two of the base plates (1); A tab limiting assembly for limiting the position of the tab (200); and, A cell limiting assembly is used to limit the position of the cell (100).
2. The battery cell tab connection and positioning fixture according to claim 1, characterized in that, The base plate spacing adjustment assembly includes a slide rod (2), and a slide groove (12) is provided on the back of the base plate (1). The slide rod (2) is embedded in the slide groove (12), and the base plate (1) can move along the slide rod (2).
3. The battery cell tab connection and positioning clamp according to claim 2, characterized in that, The battery cell tab connection positioning fixture also includes a main support frame (3) and a sliding bracket (4). The slide rod (2) is mounted on the sliding bracket (4), and the sliding bracket (4) can move along the main support frame (3).
4. The battery cell tab connection and positioning fixture according to claim 3, characterized in that, The battery cell tab connection positioning fixture also includes a support slider (5), the sliding bracket (4) is disposed on the support slider (5), and the support slider (5) can move along the main support frame (3).
5. The battery cell tab connection and positioning clamp according to any one of claims 1 to 4, characterized in that, The tab limiting assembly includes at least eight tab limiting sliders (6), wherein at least four of the tab limiting sliders (6) are disposed on one of the base plates (1), and at least four of the tab limiting sliders (6) are disposed on another base plate (1).
6. The battery cell tab connection and positioning fixture according to claim 5, characterized in that, The base plate (1) is provided with a tab limiting groove (13), and the tab limiting slider (6) is embedded in the tab limiting groove (13) and can move along the tab limiting groove (13).
7. The battery cell tab connection and positioning clamp according to claim 6, characterized in that, Two electrode limiting grooves (13) are provided parallel to each other on the base plate (1), and the electrode limiting slider (6) is connected across the two electrode limiting grooves (13).
8. The battery cell tab connection and positioning fixture according to claim 5, characterized in that, The cell limiting assembly includes at least two cell limiting sliders (7), and a cell limiting groove (14) is provided on the base plate (1). The cell limiting sliders (7) are embedded in the cell limiting groove (14) and can move along the cell limiting groove (14).
9. The battery cell tab connection and positioning clamp according to claim 6, characterized in that, The base plate (1) is provided with a cell limiting groove (14), and the tab limiting groove (13) and the cell limiting groove (14) are located on opposite sides of the welding position (11).
10. The battery cell tab connection and positioning clamp according to any one of claims 1 to 4, characterized in that, The welding position (11) is a through hole or recess opened on the base plate (1).