Battery cell stacking and pressing tool

Abstract

The utility model discloses a battery cell stacking and pressing tool, which belongs to the technical field of power battery production equipment and comprises a bottom frame, a base is arranged on the bottom frame, a side propelling cylinder is fixedly connected onto the base, an output end of the side propelling cylinder is fixedly connected with a side pressing block, a top propelling cylinder is fixedly connected onto the base, and a top pressing block is fixedly connected onto the top propelling cylinder. By using a pressure sensor and a digital display system, the battery cell pressing force is accurately controlled within a reasonable range, a module length graduated scale is arranged to ensure that the length of a module is consistent with a design value, battery cells are inversely stacked, and a pressing block is arranged on the top surface, so that the pressing force of the battery cells is accurately controlled within a reasonable range, and the module length is ensured to be consistent with the design value. The side face pressing blocks are arranged to be detachable and can adapt to stacking of battery cells with different widths after being replaced, the top face pressing blocks are arranged to be detachable and can adapt to stacking of battery cells with different heights after being replaced, the labor intensity of workers is effectively reduced, and the yield of module production is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery production equipment, in particular to a battery cell stacking and pressing tool. Background Art

[0002] Power batteries can generally be divided into three levels: battery cells, modules, and battery packs. In the technical field of assembling battery cells into modules, glue is generally applied to the end faces of the battery cells first, and then pressure is applied to the end faces of the modules after stacking to press the battery cells in the module against each other. At the same time, pressure is applied from the sides of the module to arrange them neatly.

[0003] In the early prototype trial production stage of project development, a combination of simple tooling and manpower is usually used, which brings the following problems: 1. The clamping mechanism is operated manually based on experience, resulting in loose fit of the battery cells or too small gaps between the battery cells, which in turn causes the module length to be inconsistent with the design value; 2. The tooling is usually only used to clamp the end and side faces of the module. There is no clamping mechanism on the top, resulting in uneven battery cells. During vibration, the busbar welded to the top pole ear of the battery cell may be pulled and fail; 3. The tooling is only suitable for battery cells and modules of specific specifications. New projects require redesign of special tooling, which affects R&D progress and increases costs. Utility Model Content

[0004] The utility model solves the technical problems in the above-mentioned background technology and provides a battery core stacking and pressing tool.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] A battery cell stacking and pressing tool comprises a bottom frame, the bottom frame is provided with a base, the base is fixedly connected with a side pushing cylinder, the output end of the side pushing cylinder is fixedly connected with a side pressing block, the base is fixedly connected with a top surface pushing cylinder, the output end of the top surface pushing cylinder is fixedly connected with a rocker mechanism, the base is provided with an end surface positioning block, the end plate positioning pin is slidably connected in the end surface positioning block, the base is provided with a top surface pressing block, the base is provided with a module length scale, the base is provided with a front end pushing screw threadedly connected to the base, one end of the front end pushing screw is rotatably connected with the end surface pressing block, the end surface pressing block slides on the base, the base is provided with a pressure sensor, the base is provided with a side limit block, and the side limit pin is slidably connected to the side limit block.

[0007] Preferably, the bottom of the base is provided with universal wheels, and the universal wheels are provided with four groups.

[0008] Preferably, a bottom support plate is provided on the base, and the bottom support plate is configured to be detachable.

[0009] Preferably, the top surface pressing block is configured to be detachable, and the side surface pressing block is configured to be detachable.

[0010] Preferably, the end plate locating pins are provided in two groups, the top surface propulsion cylinders are provided in two groups, and the side limit blocks are provided in two groups.

[0011] Preferably, the module length scale is located on one side of the end face pressing block.

[0012] Preferably, the pressure sensor is located between the end face pressing block and the end face positioning block.

[0013] With the above structure, the utility model has the following advantages:

[0014] 1. The utility model uses a pressure sensor and a digital display system to accurately control the cell pressing force within a reasonable range, sets a module length scale to ensure that the module length is consistent with the design value, stacks the cells upside down, sets a pressing block on the top surface, and sets the side pressing blocks to be detachable, which can be adapted to the stacking of cells of different widths after replacement. The top pressing block is detachable, which can be adapted to the stacking of cells of different heights after replacement, which not only effectively reduces the labor intensity of the staff, but also improves the yield rate of module production.

[0015] 2. The utility model uses a piston-type propulsion cylinder with a stable and simple structure, and the battery cells are stacked upside down, which effectively reduces the operation risk. At the same time, a detachable clamping block is designed to adapt to the assembly and production of battery cells and modules of different specifications, thereby enhancing the practicality of the device.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a structural schematic diagram of a battery cell stacking and pressing tooling of the utility model;

[0019] Figure 2 This is a left view of a battery cell stacking and pressing tool of the utility model;

[0020] Figure 3The utility model is a structural schematic diagram of a bottom support plate of a battery cell stacking and pressing tool.

[0021] As shown in the figure: 1. Base; 2. End plate locating pin; 3. End face locating block; 4. Top surface clamping block; 5. Side clamping block; 6. Module length scale; 7. Front end push screw; 8. Pressure sensor; 9. Side push cylinder; 10. Top surface push cylinder; 11. End face clamping block; 12. Bottom frame; 13. Universal wheel; 14. Rocker mechanism; 15. Side limit block; 16. Side limit pin; 17. Bottom support plate. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0023] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] The utility model is further described in detail below in conjunction with the full text:

[0025] Combined with Figures 1 to 3A battery cell stacking and pressing tool comprises a bottom frame 12, a base 1 is provided on the bottom frame 12, a side propulsion cylinder 9 is fixedly connected to the base 1, a side pressing block 5 is fixedly connected to the output end of the side propulsion cylinder 9, a top propulsion cylinder 10 is fixedly connected to the base 1, a rocker mechanism 14 is fixedly connected to the output end of the top propulsion cylinder 10, an end surface positioning block 3 is provided on the base 1, an end plate positioning pin 2 is slidably connected in the end surface positioning block 3, a top surface pressing block 4 is provided on the base 1, a module length scale 6 is provided on the base 1, a front end propulsion screw 7 is threadedly connected to the base 1, one end of the front end propulsion screw 7 is rotatably connected to the end surface pressing block 11, and the end surface pressing block 11 slides The battery cell is moved on the base 1, a pressure sensor 8 is provided on the base 1, a side limit block 15 is provided on the base 1, and a side limit pin 16 is slidably connected to the side limit block 15. By using the pressure sensor 8 and the digital display system, the battery cell pressing force is accurately controlled within a reasonable range, and the module length scale 6 is set to ensure that the module length is consistent with the design value. The battery cells are stacked upside down, and a clamping block is set on the top surface. The side clamping block 5 is set to be detachable, and after replacement, it can be adapted to the stacking of battery cells of different widths. The top surface clamping block 4 is set to be detachable, and after replacement, it can be adapted to the stacking of battery cells of different heights. It not only effectively reduces the labor intensity of the staff, but also improves the yield rate of module production.

[0026] Among them, a universal wheel 13 is provided at the bottom of the base 1, and four groups of universal wheels 13 are provided. A bottom support plate 17 is provided on the base 1, and the bottom support plate 17 is set to be detachable. Two groups of end plate positioning pins 2 are provided, and two groups of top surface propulsion cylinders 10 are provided. Two groups of side limit blocks 15 are provided. The module length scale 6 is located on one side of the end face clamping block 11, and the pressure sensor 8 is located between the end face clamping block 11 and the end face positioning block 3. A piston-type propulsion cylinder is used, the structure is stable and simple, and the battery cells are stacked upside down, which effectively reduces the operation risk. At the same time, a detachable clamping block is designed to adapt to the assembly and production of battery cells and modules of different specifications, thereby enhancing the practicality of the device.

[0027] Working principle of the utility model: when in use, insert the front and rear end plate locating pins 2 into the module end plate locating holes to center them, then apply glue to the end faces of the battery cells, distinguish the positive and negative poles of the battery cells, and stack the battery cells upside down in sequence, operate the side push cylinder 9 to push the side clamping block 5 to arrange the battery cells neatly, operate the top surface push cylinder 10 to push the rocker mechanism 14 to move the top surface clamping block 4 downward, and flatten the battery cell height to the same horizontal plane, rotate the front end push screw 7 clockwise to clamp the battery cell to the specified clamping force, so that the module length is consistent with the design requirements, operate to loosen the top surface clamping block 4 and the side clamping block 5, apply glue to the module side panel and place it on the side of the module, and buckle the flange at the bottom of the battery cell, operate the side push cylinder 9 to push the side clamping block 5 to press the module side panel on the side of the battery cell to make the glue sticking firm, and operate the top surface push cylinder 10 to push the rocker mechanism 14 , so that the top surface clamping block 4 moves down, and the module side panel flange is pressed against the battery cell to make the glue paste firm. The pressure sensor 8 cooperates with the digital display system to monitor the battery cell clamping force in the module in real time. The tooling bottom frame 12 is designed to be hollow, which is convenient for transportation by forklift. At the same time, the universal wheel 13 is designed at the bottom for easy movement. The top surface clamping mechanism adopts the rocker mechanism 14 design, which converts the upward force generated by the top surface pushing cylinder 10 into downward force, saving space. The side limit block 15 ensures that the module meets the centering requirements when the battery cell is leveled before the side panel is installed. The side limit pin 16 ensures that the module meets the centering requirements when the side panel is installed. The tooling adopts the inverted battery cell stacking method to avoid the battery cell explosion-proof valve and the pole ear being exposed on the top. At the same time, three grooves are designed on the bottom support plate 17 to avoid the explosion-proof valve and the pole ear on the battery cell, thereby improving the safety factor of the operation.

[0028] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A battery cell stacking and pressing tool, comprising a bottom frame (12), characterized in that: The bottom frame (12) is provided with a base (1), the base (1) is fixedly connected with a side propulsion cylinder (9), the output end of the side propulsion cylinder (9) is fixedly connected with a side pressing block (5), the base (1) is fixedly connected with a top propulsion cylinder (10), the output end of the top propulsion cylinder (10) is fixedly connected with a rocker mechanism (14), the base (1) is provided with an end surface positioning block (3), the end surface positioning block (3) is slidably connected with an end plate positioning pin (2), the base (1 ) is provided with a top surface clamping block (4), the base (1) is provided with a module length scale (6), the base (1) is threadedly connected to a front end propulsion screw (7), one end of the front end propulsion screw (7) is rotatably connected to an end surface clamping block (11), the end surface clamping block (11) slides on the base (1), the base (1) is provided with a pressure sensor (8), the base (1) is provided with a side limit block (15), and the side limit block (15) is slidably connected to a side limit pin (16).

2. The battery cell stacking and pressing tool according to claim 1, characterized in that: The bottom of the base (1) is provided with universal wheels (13), and the universal wheels (13) are provided with four groups.

3. The battery cell stacking and pressing tool according to claim 2, characterized in that: The base (1) is provided with a bottom support plate (17), and the bottom support plate (17) is configured to be detachable.

4. The battery cell stacking and pressing tool according to claim 3, characterized in that: The top surface pressing block (4) is configured to be detachable, and the side surface pressing block (5) is configured to be detachable.

5. The battery cell stacking and pressing tool according to claim 4, characterized in that: The end plate positioning pins (2) are provided in two groups, the top surface propulsion cylinders (10) are provided in two groups, and the side limit blocks (15) are provided in two groups.

6. The battery cell stacking and pressing tool according to claim 5, characterized in that: The module length scale (6) is located on one side of the end face pressing block (11).

7. The battery cell stacking and pressing tool according to claim 6, characterized in that: The pressure sensor (8) is located between the end face pressing block (11) and the end face positioning block (3).

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