Welding fixture, welding unit, and battery manufacturing apparatus

Abstract

The utility model belongs to battery manufacturing technical field discloses a kind of welding tool, welding unit and battery manufacturing equipment.The welding tool includes clamping mechanism and support mechanism, the clamping mechanism forms the clamping space with adjustable spacing in first direction, and multiple stacked battery cells are contained in the clamping space;First direction is parallel to the stacking direction of multiple battery cells.The support mechanism includes displacement seat and support component, the support component is connected to the displacement seat, the support component can be inserted between multiple stacked battery cells, and support below PCB board, the PCB board is placed above the battery cell, and the tab of the battery cell passes through the PCB board;The displacement seat can be moved along second direction, and second direction is angle with first direction.The welding tool can guarantee the reliable positioning between the tab of battery cell and PCB board, avoid the problem that virtual welding occurs between tab and PCB board due to the gap between tab and PCB board, improve the reliability and effect of welding.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a welding fixture, welding unit and battery manufacturing equipment. Background Technology

[0002] Battery modules typically contain several cells to increase battery capacity. To better monitor and manage parameters such as voltage, current, and temperature of individual cells in real time, several cells are usually soldered to a PCB (Printed Circuit Board) to enable data transmission.

[0003] When soldering the battery cell and the PCB board, the battery cell's tabs are passed through the PCB board and soldered onto it. To ensure the soldering quality of these two components, the soldering head is usually pressed against the PCB board to ensure a tight fit. However, because the outer shell of a pouch battery is relatively soft and provides insufficient support to the PCB board, the pressure from the soldering head can cause the PCB board to deform. This can result in gaps between the two components, leading to incomplete soldering and affecting the reliability and effectiveness of the soldering.

[0004] Therefore, there is an urgent need for a welding fixture, welding unit, and battery manufacturing equipment to solve the above problems. Utility Model Content

[0005] According to one aspect of this utility model, the objective is to provide a welding fixture that can ensure reliable positioning between the battery cell tab and the PCB board, avoid the problem of incomplete soldering due to gaps between the tab and the PCB board, and improve the reliability and effect of welding.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Welding fixtures, including:

[0008] A clamping mechanism is formed in a clamping space with an adjustable spacing in a first direction, in which multiple stacked battery cells are accommodated; the first direction is parallel to the stacking direction of the multiple battery cells.

[0009] A support mechanism includes a displacement seat and a support component. The support component is connected to the displacement seat and can extend between multiple stacked battery cells and support them below a PCB board. The PCB board is placed above the battery cells, and the tabs of the battery cells pass through the PCB board. The displacement seat can move along a second direction, which is at an angle to the first direction.

[0010] As a preferred embodiment of the welding fixture provided by this utility model, the clamping mechanism includes a first stop and a second stop, the clamping space is formed between the first stop and the second stop, and at least one of the first stop and the second stop is movable in a first direction.

[0011] As a preferred embodiment of the welding fixture provided by this utility model, the clamping mechanism further includes a clamping slide rail, and the first stop and / or the second stop is slidably connected to the clamping slide rail.

[0012] As a preferred embodiment of the welding fixture provided by this utility model, the clamping mechanism further includes a stop structure, which is detachably connected to the clamping slide rail. The stop structure is used to abut against the end of the first stop or the second stop away from the battery cell; and / or,

[0013] There are multiple clamping slide rails, which are parallel to each other and spaced apart along the second direction.

[0014] As a preferred embodiment of the welding fixture provided by this utility model, the welding fixture further includes a guide mechanism, which is arranged along a second direction, and the displacement seat is slidably arranged on the guide mechanism.

[0015] As a preferred embodiment of the welding fixture provided by this utility model, the support component includes a first support base and a support ruler. The first support base is height-adjustably connected to the displacement seat, and the support ruler is connected to the first support base and can extend between adjacent battery cells to support the underside of the PCB board.

[0016] As a preferred embodiment of the welding fixture provided by this utility model, the support assembly further includes a second support base, which is disposed on the side of the clamping mechanism away from the first support base, and the end of the support ruler away from the first support base overlaps the second support base.

[0017] As a preferred embodiment of the welding fixture provided by this utility model, the welding fixture further includes a first buffer damper and a second buffer damper, wherein the first buffer damper and the second buffer damper are respectively located at two displacement limit positions of the displacement seat in the second direction.

[0018] According to another aspect of the present invention, the object is to provide a welding unit, the welding unit comprising a welding device, a welding head and a welding fixture as described in any of the above embodiments, the welding head being able to press against the top of the PCB board, and the welding device being able to weld the tabs of the battery cell and the PCB board.

[0019] According to another aspect of the present invention, the object is to provide a battery manufacturing apparatus, the battery manufacturing apparatus including a welding unit as described above.

[0020] The beneficial effects of this utility model are:

[0021] The welding fixture provided by this utility model includes a clamping mechanism and a supporting mechanism. The clamping mechanism forms a clamping space with adjustable spacing in a first direction, in which multiple stacked battery cells are accommodated; the first direction is parallel to the stacking direction of the multiple battery cells. Through the clamping mechanism, the stacked battery cells can be reliably positioned. The supporting mechanism includes a displacement seat and a support component. The support component is connected to the displacement seat and can extend between the stacked battery cells, supporting them below a PCB board. The PCB board is placed above the battery cells, with the battery cell tabs passing through the PCB board. The displacement seat can move along a second direction at an angle to the first direction. By moving the displacement seat, its position can be adjusted in the second direction, thus adapting to battery cells of different widths. The support component provides support for the PCB board, preventing deformation of the PCB board due to pressure from the welding head during subsequent welding, thereby avoiding gaps between the tabs and the PCB board that could lead to incomplete soldering, and improving the reliability and effectiveness of the welding process. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the welding fixture provided in this embodiment of the utility model. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the welding fixture provided in this embodiment of the utility model. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the welding fixture provided in this embodiment of the utility model. Figure 3 ;

[0026] Figure 4 yes Figure 3 A magnified view of a section marked A in the middle;

[0027] Figure 5 yes Figure 3 A magnified view of the structure marked B in the middle.

[0028] In the picture:

[0029] 10. Battery cell; 11. Electrode tab; 20. PCB board;

[0030] 100. Clamping mechanism; 110. First stop; 120. Second stop; 130. Clamping slide rail; 140. Stop structure; 141. Stop block; 142. Fixing pin;

[0031] 200, Displacement seat; 210, Limiting groove;

[0032] 300, Support component; 310, First support base; 311, Waist-shaped elongated hole; 320, Support ruler; 330, Second support base; 331, Slot;

[0033] 400. Guiding mechanism;

[0034] 510. First buffer damping; 520. Second buffer damping;

[0035] 600. Base. Detailed Implementation

[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connect," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In this embodiment, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals 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.

[0045] This embodiment provides a welding fixture, a welding unit, and a battery manufacturing equipment. The battery manufacturing equipment includes the aforementioned welding unit, through which the welding function of the battery manufacturing equipment can be realized.

[0046] The welding unit provided in this embodiment includes a welding device, a welding head, and a welding fixture provided in this embodiment. The welding head can press against two objects to ensure a tight fit between them. The welding device can then be used to weld two objects together.

[0047] Figure 1 This diagram illustrates the structure of the welding fixture provided in an embodiment of the present invention. Figure 1 ; Figure 2 This diagram illustrates the structure of the welding fixture provided in an embodiment of the present invention. Figure 2 ; Figure 3 This diagram illustrates the structure of the welding fixture provided in an embodiment of the present invention. Figure 3 . Reference Figures 1-3 The welding fixture provided in this embodiment is mainly capable of welding the tabs 11 of multiple stacked battery cells 10 to the PCB board 20 placed on the multiple battery cells 10. The tabs 11 of the battery cell 10 can pass through the PCB board 20 and extend above the PCB board 20 in the height direction.

[0048] The welding fixture includes a clamping mechanism 100 and a support mechanism. The clamping mechanism 100 forms a clamping space with adjustable spacing in a first direction, in which multiple stacked battery cells 10 are accommodated. The support mechanism includes a displacement seat 200 and a support component 300. The displacement seat 200 is movable in a second direction, and the support component 300 is connected to the displacement seat 200 and can extend between the multiple stacked battery cells 10, supporting them below the PCB board 20. The first direction is parallel to the stacking direction of the multiple battery cells 10. The second direction is at an angle to the first direction; in this embodiment, the second direction is specifically set at a right angle to the first direction.

[0049] The clamping mechanism 100 reliably positions and clamps the stacked battery cells 10, allowing the tabs 11 on several battery cells 10 to align with and be inserted into holes on the PCB board 20. The movement of the displacement seat 200 allows the support component 300 to extend between the battery cells 10 and support them below the PCB board 20. Simultaneously, the displacement seat 200 adjusts its position in a second direction to accommodate battery cells 10 of different widths. The support component 300 provides support for the PCB board 20, preventing deformation of the PCB board 20 due to pressure from the soldering head during subsequent soldering. This avoids gaps between the tabs 11 and the PCB board 20, preventing incomplete soldering and improving the reliability and effectiveness of the soldering process.

[0050] Specifically, the welding fixture also includes a base 600, on which the clamping mechanism 100 and the support mechanism are all mounted, thereby improving the structural integration of the welding fixture.

[0051] More specifically, the clamping mechanism 100 includes a first stop 110 and a second stop 120. At least one of the first stop 110 and the second stop 120 is movable in a first direction. With the above arrangement, the clamping space formed between the first stop 110 and the second stop 120 can be adjusted to accommodate the clamping and positioning of different numbers of stacked battery cells 10.

[0052] More specifically, the clamping mechanism 100 further includes a clamping slide rail 130. The first stop 110 and / or the second stop 120 are slidably connected to the clamping slide rail 130. In this embodiment, the first stop 110 is fixedly disposed on the base 600, and the clamping slide rail 130 is disposed on the base 600 along a first direction and spaced apart from the first stop 110. The second stop 120 is slidably disposed on the clamping slide rail 130. By moving the second stop 120 along the clamping slide rail 130, the distance between the second stop 120 and the first stop 110 can be adjusted in the first direction.

[0053] More specifically, the clamping mechanism 100 also includes a stop structure 140. The stop structure 140 is detachably connected to the clamping slide rail 130 and abuts against the end of the first stop 110 or the second stop 120 away from the battery cell 10, thereby stopping the first stop 110 or the second stop 120. In this embodiment, since the first stop 110 is fixed, the description focuses on the stop structure 140 stopping the second stop 120. Specifically, the stop structure 140 abuts against the second stop 120 at the end away from the battery cell 10, thereby limiting its movement and ensuring the reliability of the second stop 120 abutting against the battery cell 10.

[0054] More specifically, Figure 4 Show Figure 3 A magnified view of the structure marked A in the middle, see reference. Figure 4 The stop structure 140 includes a stop block 141 and a fixing pin 142. The stop block 141 is adjustablely positioned on the clamping slide rail 130. The fixing pin 142 is detachably connected through the stop block 141 and is inserted into or screwed into the clamping slide rail 130.

[0055] Preferably, there are multiple clamping slide rails 130, which are parallel to each other and spaced apart along the second direction. In this embodiment, there are specifically two clamping slide rails 130. With the above arrangement, the multiple clamping slide rails 130 can provide uniform and stable support for the second stop 120, further improving the smoothness and stability of the second stop 120 when moving along the clamping slide rails 130.

[0056] Alternatively, in a configuration with multiple clamping slide rails 130, there can also be multiple stop structures 140, with each clamping slide rail 130 having a stop structure 140. This configuration improves the uniformity of the stopping force on the second stop seat 120, preventing the second stop seat 120 from tilting at the moment of stopping.

[0057] Continue to refer to Figures 1-3 The welding fixture also includes a guide mechanism 400. The guide mechanism 400 is positioned along a second direction and fixedly mounted on the base 600. The displacement seat 200 is slidably mounted on the guide mechanism 400. Specifically, the guide mechanism 400 can be a sliding track, which provides guidance and limiting for the movement of the displacement seat 200, ensuring its stability and accuracy of movement direction.

[0058] Continue to refer to Figures 1-3 The support assembly 300 includes a first support base 310 and a support ruler 320. The first support base 310 is height-adjustably connected to the displacement seat 200, and the support ruler 320 is connected to the first support base 310 and can extend between adjacent battery cells 10 to support the PCB board 20 from below. Multiple support rulers 320 are arranged parallel to each other and spaced apart in a first direction. These multiple support rulers 320 provide uniform and reliable support for the PCB board 20, preventing deformation under the pressure of the subsequent soldering head.

[0059] Specifically, the support ruler 320 and the first support base 310 can be detachably connected by bolts or the like, so that the number of support rulers 320 and the spacing between adjacent support rulers 320 can be flexibly adjusted according to the number and spacing of the battery cells 10.

[0060] More specifically, a limiting groove 210 is formed on the displacement seat 200 along the height direction. The first support seat 310 can be adjusted in height within the limiting groove 210 and is connected to the limiting groove 210 by screws. Through the limiting groove 210, the first support seat 310 can be limited and guided, ensuring that the several support rulers 320 can maintain the same height, so as to provide effective support for the PCB board 20.

[0061] More specifically, the first support 310 has an elongated slot 311, the long axis of which is parallel to the height direction of the displacement seat 200. The installation height of the displacement seat 200 can be adjusted by adjusting the relative position of the screw and the slot 311 along its long axis.

[0062] Figure 5 Show Figure 3 A magnified view of the structure marked B in the middle section. (Refer to...) Figures 1-3 and Figure 5 The support component 300 also includes a second support base 330. The second support base 330 is disposed on the side of the clamping mechanism 100 away from the first support base 310, and one end of the support ruler 320 away from the first support base 310 overlaps with the second support base 330. The second support base 330 provides an overlap position for the support ruler 320, further ensuring its support performance and stability. In this embodiment, one end of the second support base 330 is specifically fixedly connected to the second stop 120, and the other end of the second support base 330 overlaps with the first stop 110.

[0063] Specifically, in this embodiment, the top of the first stop 110 is provided with a first mounting groove, and the top of the second stop 120 is provided with a second mounting groove. One end of the second support 330 is fixedly connected to the second mounting groove, and the other end of the second support 330 is detachably snapped into the first mounting groove. This arrangement improves the reliability of the connection between the second support 330 and the first stop 110 and the second stop 120.

[0064] More specifically, the second support base 330 is provided with a slot 331, and the end of the support ruler 320 away from the displacement seat 200 can be limited in the slot 331, so that the several support rulers 320 are parallel and equally spaced, ensuring that the end spacing of the battery cell 10 is equal, thereby ensuring the welding quality.

[0065] Preferably, the welding fixture further includes a first buffer damper 510 and a second buffer damper 520, which are located at two extreme displacement positions of the displacement seat 200 in the second direction, respectively, and are both mounted on the base 600. Through the aforementioned first buffer damper 510 and second buffer damper 520, impact and vibration can be reduced when the displacement seat 200 moves into position, thereby lowering the vibration failure rate of components such as the displacement seat 200, guide mechanism 400, first support seat 310, and support ruler 320.

[0066] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Welding fixture, characterized in that, include: A clamping mechanism (100) is formed in a clamping space with an adjustable spacing in a first direction, in which a plurality of stacked battery cells (10) are accommodated; the first direction is parallel to the stacking direction of the plurality of battery cells (10); The support mechanism includes a displacement seat (200) and a support component (300). The support component (300) is connected to the displacement seat (200). The support component (300) can extend between multiple stacked battery cells (10) and is supported under a PCB board (20). The PCB board (20) is placed above the battery cells (10), and the tabs (11) of the battery cells (10) pass through the PCB board (20). The displacement seat (200) can move along a second direction, which is at an angle to the first direction.

2. The welding fixture according to claim 1, characterized in that, The clamping mechanism (100) includes a first stop (110) and a second stop (120), the clamping space is formed between the first stop (110) and the second stop (120), and at least one of the first stop (110) and the second stop (120) is movable in a first direction.

3. The welding fixture according to claim 2, characterized in that, The clamping mechanism (100) further includes a clamping slide rail (130), to which the first stop (110) and / or the second stop (120) are slidably connected.

4. The welding fixture according to claim 3, characterized in that, The clamping mechanism (100) further includes a stop structure (140), which is detachably connected to the clamping slide rail (130). The stop structure (140) is used to abut against the end of the first stop (110) or the second stop (120) away from the battery cell (10); and / or, There are multiple clamping slide rails (130), which are parallel to each other and spaced apart along the second direction.

5. The welding fixture according to claim 1, characterized in that, The welding fixture also includes a guide mechanism (400), which is arranged along a second direction, and the displacement seat (200) is slidably arranged on the guide mechanism (400).

6. The welding fixture according to claim 1, characterized in that, The support component (300) includes a first support base (310) and a support ruler (320). The first support base (310) is height-adjustably connected to the displacement seat (200). The support ruler (320) is connected to the first support base (310) and can extend between adjacent battery cells (10) to support the underside of the PCB board (20).

7. The welding fixture according to claim 6, characterized in that, The support component (300) further includes a second support base (330), which is disposed on the side of the clamping mechanism (100) away from the first support base (310), and the end of the support ruler (320) away from the first support base (310) is attached to the second support base (330).

8. The welding fixture according to claim 1, characterized in that, The welding fixture also includes a first buffer damper (510) and a second buffer damper (520), the first buffer damper (510) and the second buffer damper (520) being located at two displacement limit positions of the displacement seat (200) in the second direction, respectively.

9. A welding unit, characterized in that, The device includes a welding apparatus, a welding head, and a welding fixture as described in any one of claims 1-8, wherein the welding head is capable of pressing against the top of the PCB board (20), and the welding apparatus is capable of welding the tab (11) of the battery cell (10) and the PCB board (20).

10. Battery manufacturing equipment, characterized in that, Includes the welding unit as described in claim 9.

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