Welding fixture

Abstract

The utility model discloses a welding frock, including work table, side limit component, middle limit component, gland and connecting component, the work table table top outer edge place slide setting side limit component, and the work table table top middle part is provided with middle limit component, and the middle limit component and two sides limit component respectively enclose and form two each other symmetrical space, and the limit component upper surface in the work table table top middle part is tightly matched with the gland through the connecting component, and the gland surface leaves the window, the utility model discloses beneficial effect: through setting side limit component and middle limit component, make each other enclose and form the space for accommodating the electric core, again cooperate with the side limit component and can slide, make the space size adjustable, through setting the gland, make the gland pressure cover in the roll core, the tab surface, complete the alignment and shaping of roll core and tab.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to welding fixtures. Background Technology

[0002] Lithium-ion batteries possess advantages such as high voltage, large specific capacity, high energy density, no memory effect, long cycle life, and environmental friendliness, making them the most widely used and most likely to be applied on a large scale in electric vehicles. They have become the dominant power source in the consumer electronics sector and have attracted widespread attention from industries such as photovoltaic energy storage, nuclear power energy storage, wind power energy storage, electric vehicles, and aircraft, where they have already found some applications.

[0003] With the continuous improvement of electric vehicle technology, the market demand for large lithium batteries is gradually being released. It is expected that this demand will persist in the coming years, and lithium batteries will maintain their growth momentum. Therefore, the research, development, application, and storage of lithium-ion batteries are particularly important. However, in the existing lithium-ion battery manufacturing and assembly processes, the secondary welding process using ultrasonic welding can cause damage to the weld area strength and the core during secondary handling, affecting product quality and yield.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by this utility model is to solve the problem that the battery cell cannot be formed and shaped in one step and positioned during the welding process.

[0006] This utility model solves the above-mentioned technical problems through the following technical means:

[0007] This utility model claims to protect a welding fixture, including a worktable, a side limiting component, a middle limiting component, a pressure cap, and a connecting component; the side limiting component is slidably installed at the outer edge of the worktable surface, and the middle limiting component is installed in the middle of the worktable surface. The middle limiting component and the two side limiting components respectively enclose two symmetrical spaces. The upper surface of the limiting component located in the middle of the worktable surface is pressed and fitted with a pressure cap by the connecting component, and the surface of the pressure cap has a window.

[0008] This utility model claims to protect a space for accommodating a battery cell by setting a side limiting component and a middle limiting component, which are enclosed to each other; the side limiting component can slide, so the size of the space is adjustable; and a pressure cover is set so that the pressure cover presses on the surface of the core and the tab connecting piece, thereby completing the alignment and shaping of the core and the tab connecting piece.

[0009] Preferably, the side limiting assembly includes at least two first side limiting members and at least two rows of second side limiting members; the at least two first side limiting members are respectively placed on the left and right sides of the worktable and slide along the length direction of the worktable; the at least two rows of second side limiting members are arranged symmetrically with respect to each other along the pressure cap, and each row of second side limiting members is respectively placed on the front and rear sides of the worktable and slides along the width direction of the worktable.

[0010] At least two rows of second-side limiting members can ensure that two spaces are formed after being separated by the middle limiting component.

[0011] Preferably, a first side slide groove is provided in the middle of the left and right sides of the workbench surface. The length of the first side slide groove is parallel to the length direction of the workbench. First side limit members are slidably arranged in the first side slide grooves and are fixed to each other by the first side locking unit.

[0012] The first side slide groove is slidably set with the first side limiting member to ensure the movement of the first side limiting member, and after moving to the appropriate position, it is fixed by the first side locking unit.

[0013] Preferably, at least two rows of second side slides are provided on the front and rear sides of the workbench. The at least two rows of second side slides are arranged symmetrically along the cover, and each row of second side slides is located on the front and rear sides of the workbench. The length of the second side slide is parallel to the width of the workbench. Second side limiting members are slidably provided in the second side slides and are fixed to each other by second side locking units.

[0014] The second side slide groove is slidably connected to the second side limiting member to ensure the movement of the second side limiting member, and after it moves to the appropriate position, it is fixed by the second side locking unit.

[0015] Preferably, a central slide groove is provided in the middle of the worktable surface. The length of the central slide groove is parallel to the width of the worktable. At least two central limit components are slidably arranged in the central slide groove and are fixed to each other by a central locking unit.

[0016] The middle limit component is slidably set with the middle slide groove to ensure the movement of the middle limit component. After moving to the appropriate position, it is fixed by the middle locking unit. In fact, the middle limit component is only for fine adjustment and is used to correct errors.

[0017] Preferably, the connecting component includes a connecting block, a magnetic unit, and a magnet unit. The worktables located at both ends of the middle slide are provided with connecting blocks, and the connecting blocks are provided with magnetic units and / or magnet units, forming a magnetic connection with another magnet unit and / or another magnetic unit corresponding to the bottom of the pressure cap.

[0018] The worktable and connecting block can be quickly connected through magnetic units and magnet units.

[0019] Preferably, the connecting component further includes a positioning pin and a positioning hole. The connecting block is provided with a positioning pin, the axis of which is vertical. The positioning pin and the positioning hole through which the pressure cap passes form an insertion fit.

[0020] The positioning pins and positioning holes enable the initial pre-positioning of the connecting block.

[0021] Preferably, the connecting assembly further includes an adjusting bolt, with the adjusting bolt located at the bottom of the locating pin, and the adjusting bolt engaging with the threaded hole through which the connecting block passes.

[0022] The adjusting bolt allows for adjustment of the protrusion length of the locating pin.

[0023] Preferably, a base is provided at the bottom of the workbench.

[0024] The base raises the workbench, making it easier for personnel to operate.

[0025] Preferably, the side limiting component has a U-shaped structure.

[0026] The U-shaped structure minimizes contact with the battery cell. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the welding fixture of this utility model;

[0028] Figure 2 This is a top view of the welding fixture of this utility model.

[0029] 1. Workbench; 10. Base; 1a. First left-side slide rail; 1b. First right-side slide rail; 1c. Second left-side slide rail; 1d. Second right-side slide rail; 1e. Middle slide rail;

[0030] 2a. First left-side limiting member; 2b. First right-side limiting member; 2c. Second left-side limiting member; 2d. Second right-side limiting member;

[0031] 3a. First middle limit component; 3b. Second middle limit component; 4. Pressure cap; 40. Window; 50. Connecting block; 51. Positioning pin; 52. Positioning hole; 53. Adjusting bolt. Detailed Implementation

[0032] 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 in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] SeeFigure 1 and Figure 2 This utility model claims to protect welding fixtures, including a worktable 1, a side limiting component, a middle limiting component, a pressure cap 4, and a connecting component.

[0034] A base 10 is provided at the bottom of the workbench 1. A side limiting component is slidably provided at the outer edge of the workbench 1. The side limiting component has a U-shaped structure. Specifically, the side limiting component includes two first side limiting parts, namely a first left side limiting part 2a and a first right side limiting part 2b. The first left side limiting part 2a and the first right side limiting part 2b are respectively placed on the left and right sides of the workbench 1.

[0035] The number of first side limiters is not limited to two; there can also be four. Two first side limiters are set on each of the left and right sides of the worktable 1.

[0036] The first left-side limiting member 2a and the first right-side limiting member 2b slide along the length of the worktable 1. Specifically, first side grooves are provided in the middle of the left and right sides of the worktable 1, namely the first left-side groove 1a and the first right-side groove 1b, which are arranged in a one-to-one correspondence with the corresponding first left-side limiting member 2a and the first right-side limiting member 2b. The length of the first side groove is parallel to the length of the worktable 1, and the first side limiting members are slidably arranged in the first side grooves and fixed to each other by the first side locking unit.

[0037] In practice, the number of first side slides is determined by the number of first side limiting parts, therefore, the number of first side slides is not specifically limited.

[0038] The side limiting assembly also includes two rows of second side limiting members, namely a row of second left side limiting members 2c and a row of second right side limiting members 2d. The row of second left side limiting members 2c and the row of second right side limiting members 2d are arranged symmetrically along the pressure cover 4, and each row of second side limiting members is placed on the front and rear sides of the worktable 1.

[0039] The second left-side limiting element 2c refers to two second left-side limiting elements 2c, which are placed on the front and rear sides of the worktable 1 respectively. The second right-side limiting element 2d is similar and will not be described in detail.

[0040] Similarly, the second side limiting member is not limited to two rows, but can also be four rows, with two rows on the left and two rows on the right, arranged symmetrically along the pressure cover 4.

[0041] Each row of second side limiting members slides along the width direction of the worktable 1. Specifically, two rows of second side sliding grooves are opened on the front and rear sides of the worktable 1. The length of the second side sliding groove is parallel to the width direction of the worktable 1. They are a row of second left sliding groove 1c and a row of second right sliding groove 1d, respectively. They are arranged in a one-to-one correspondence with the corresponding row of second left limiting members 2c and the row of second right limiting members 2d, and are fixed to each other by the second side locking unit.

[0042] The number of second-side slides is determined by the number of second-side limiting members; therefore, there is no specific limit to the number of second-side slides.

[0043] A middle limiting component is provided in the middle of the workbench 1 surface. Specifically, a middle sliding groove 1e is opened in the middle of the workbench 1 surface. The length of the middle sliding groove 1e is parallel to the width of the workbench 1. Two middle limiting components are slidably arranged in the middle sliding groove 1e, namely the first middle limiting component 3a and the second middle limiting component 3b. The first middle limiting component 3a and the second middle limiting component 3b are fixed to the middle sliding groove 1e by a middle locking unit.

[0044] The central groove 1e is designed to allow for minor adjustments to the two central limiting components along its length, ensuring proper alignment between the central limiting components and the tab connecting piece or core. In practice, the number of central limiting components is not limited to two; the primary goal is to maintain the smooth surface of the tab connecting piece or core.

[0045] It is worth noting that the locking of the second side locking unit, the middle locking unit, and the first side locking unit is achieved by setting several rows of pin holes in the corresponding slots, and by setting a pin shaft at the bottom of the corresponding limiting component. The limiting component is adjusted and fixed by the engagement of the pin shaft with the pin holes. Taking the second side locking unit as an example, several rows of second left-side pin holes are set at the bottom of the second left-side slide groove 1c, and a second left-side pin shaft is set at the bottom of the second left-side limiting component 2c. The second left-side pin shaft is inserted into the second left-side pin holes to achieve fixation. And so on, without further elaboration.

[0046] The central limiting component and the two side limiting components respectively enclose two symmetrical spaces. One space is formed by the first left-side limiting component 2a, a row of second left-side limiting components 2c, and the central limiting component; the other space is formed by the first right-side limiting component 2b, a row of second right-side limiting components 2d, and the central limiting component. The size of each space can be changed by moving the corresponding side limiting components, and the spaces are used to accommodate the battery cells.

[0047] A pressure cap 4 is pressed and fitted onto the upper surface of the limiting component located in the middle of the workbench 1 via a connecting component. The surface of the pressure cap 4 has a window 40 for the welding station to be exposed. Specifically, the connecting component includes a positioning pin 51, a positioning hole 52, a connecting block 50, an adjusting bolt 53, a magnetic unit, and a magnet unit. The workbench 1 located at both ends of the middle slide 1e is provided with a connecting block 50, and a positioning pin 51 is provided on the connecting block 50. The axis of the positioning pin 51 is vertical. The positioning pin 51 and the corresponding positioning hole 52 of the pressure cap 4 form an insertion fit. The connecting block 50 is provided with a magnetic unit, which forms a magnetic connection with the magnet unit provided at the bottom of the pressure cap 4. The positions of the magnetic unit and the positioning pin 51 are staggered.

[0048] In practical use, a magnet unit can be set on the connecting block 50, and a magnetic unit can be set on the bottom of the pressure cover 4. Alternatively, both a magnet unit and a magnetic unit can be set on the connecting block 50, as long as the connecting block 50 and the bottom of the pressure cover 4 are magnetically connected to each other. The magnetic unit is preferably a magnet. The magnet unit is preferably an iron block or another magnet.

[0049] Furthermore, an adjusting bolt 53 is provided at the bottom of the positioning pin 51. The adjusting bolt 53 engages with the threaded hole through which the connecting block 50 passes, thereby adjusting the extension length of the positioning pin 51.

[0050] The welding fixture is used for the one-time forming, shaping, welding, and positioning of battery cells, coiled cores, and electrode connecting pieces, as follows:

[0051] The battery cell is placed in two spaces and slids through the first side limiter into the first side groove until the first side limiter abuts against the side of the battery cell and is fixed by the first side locking unit. The adjustment of the second side limiter is carried out in the same way, without going into details, until the battery cell is fixed.

[0052] The middle limit component is moved so that its surface fits into the core and the tab connecting piece. This process is generally for minor error adjustment.

[0053] Install the pressure cap 4, align the positioning hole 52 with the positioning pin 51, and place the pressure cap 4 on the connecting block 50 from top to bottom until the magnetic unit and the magnet unit are magnetically attracted to each other. The pressure cap 4 presses onto the surface of the core and the tab connecting piece, completing the alignment and shaping of the core and the tab connecting piece.

[0054] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. Welding fixture, characterized in that, It includes a worktable (1), a side limiting component, a middle limiting component, a pressure cover (4) and a connecting component; the side limiting component is slidably installed at the outer edge of the worktable (1), and the middle limiting component is installed in the middle of the worktable (1). The middle limiting component and the two side limiting components respectively enclose two symmetrical spaces. The upper surface of the limiting component located in the middle of the worktable (1) is pressed and fitted with a pressure cover (4) by the connecting component. The surface of the pressure cover (4) has a window (40).

2. The welding fixture according to claim 1, characterized in that, The side limiting assembly includes at least two first side limiting members and at least two rows of second side limiting members; at least two first side limiting members are placed on the left and right sides of the worktable (1) and slide along the length of the worktable (1); at least two rows of second side limiting members are arranged symmetrically along the pressure cover (4), and each row of second side limiting members is placed on the front and rear sides of the worktable (1) and slides along the width of the worktable (1).

3. The welding fixture according to claim 2, characterized in that, The workbench (1) has a first side slide groove in the middle of the left and right sides of the table surface. The length of the first side slide groove is parallel to the length of the workbench (1). First side limiters are slidably installed in the first side slide grooves and are fixed to each other by the first side locking unit.

4. The welding fixture according to claim 2, characterized in that, At least two rows of second side slides are opened on the front and rear sides of the workbench (1). The at least two rows of second side slides are arranged symmetrically along the pressure cover (4). Each row of second side slides is located on the front and rear sides of the workbench (1). The length of the second side slide is parallel to the width of the workbench (1). The second side limiter is slidably installed in the second side slide and is fixed to each other by the second side locking unit.

5. The welding fixture according to claim 1, characterized in that, A central slide groove (1e) is provided in the middle of the worktable (1). The length of the central slide groove (1e) is parallel to the width of the worktable (1). At least two central limit components are slidably arranged in the central slide groove (1e) and are fixed to each other by a central locking unit.

6. The welding fixture according to claim 1, characterized in that, The connecting component includes a connecting block (50), a magnetic unit and a magnet unit. The worktable (1) located at both ends of the middle slide (1e) is provided with the connecting block (50). The connecting block (50) is provided with a magnetic unit and / or a magnet unit, which forms a magnetic connection with another magnet unit and / or another magnetic unit provided at the bottom of the pressure cover (4).

7. The welding fixture according to claim 6, characterized in that, The connecting component also includes a positioning pin (51) and a positioning hole (52). The connecting block (50) is provided with a positioning pin (51). The axis of the positioning pin (51) is vertical. The positioning pin (51) and the positioning hole (52) through which the pressure cap (4) passes constitute a plug-in fit.

8. The welding fixture according to claim 6, characterized in that, The connecting assembly also includes an adjusting bolt (53), and the bottom end of the positioning pin (51) is provided with the adjusting bolt (53). The adjusting bolt (53) and the threaded hole through which the connecting block (50) passes form a threaded engagement.

9. The welding fixture according to claim 1, characterized in that, The workbench (1) is equipped with a base (10) at its bottom.

10. The welding fixture according to claim 1, characterized in that, The side limiting component has a U-shaped structure.

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