Pressure maintaining equipment for battery cell stacking module

Abstract

The utility model relates to the technical field of battery manufacturing, in particular to pressure maintaining equipment for battery cell stacking modules, which is used for continuously extruding a plurality of battery cell stacking modules arranged in a box body. Comprising an accommodating part for accommodating the box body and a pressing assembly for extruding the cell stacking module, and the pressing assembly is arranged above the accommodating part; the downward pressing assembly can move in the vertical direction so as to be close to or away from the containing part. The downward pressing assembly comprises a plurality of pressing blocks which are arranged in an array; according to the utility model, the pressing pressure can be uniformly dispersed, and the accuracy of the in-box depth and the in-box position of the battery cell stacking module in the box is ensured.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a pressure holding device for battery cell stacking modules. Background Technology

[0002] During the production process of the battery pack production line, modules formed by stacking multiple battery cells (hereinafter collectively referred to as battery cell stacking modules) are transported and placed above the enclosure compartment by clamps on modules or robotic arms. Because the battery cell stacking modules are in a compressed and constrained state along their length, they will rebound along their length after being placed above the enclosure compartment. This results in significant friction between the end plates at both ends of the battery cell stacking modules and the enclosure body. Therefore, the battery cell stacking modules cannot fall freely to the bottom of the enclosure and need to be pressed into the enclosure using a gantry crane.

[0003] Due to the limited load capacity of gantry cranes and the tendency of their counterweights to tilt during the pressing process, battery cell stacking modules squeezed into the box by the gantry crane often suffer from the following problems: insufficient insertion depth and misalignment of the insertion position. To solve these problems, an effective approach is to apply pressure to the battery cell stacking modules at the correct position. For example, utility model patent CN222601020U provides a pressure-holding mechanism, including a plate that can be connected to a module stacking fixture. Several pressure-applying components are arranged on the same side of the plate. The pressure-applying components include a pushing member and an elastic member. One end of the elastic member is connected to the plate, and the other end is connected to the pushing member. The pushing member can hold the terminal of the cylindrical battery cell.

[0004] However, the aforementioned device still has its limitations. The pressure-holding device is used to compress each individual cell separately, rather than to compress the entire stacked cell module that has already been placed in the box. Therefore, it has lower requirements for the uniform distribution of pressure and cannot meet the pressure-holding requirements of the stacked cell module. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a pressure-holding device for battery cell stacking modules, which can evenly distribute the downward pressure and ensure the accurate insertion depth and position of the battery cell stacking modules in the box.

[0006] The technical solution of this utility model is to provide a pressure-holding device for battery cell stacking modules, used to continuously compress several battery cell stacking modules disposed in a housing. The device is characterized by including a housing portion for accommodating the housing and a pressing component for compressing the battery cell stacking modules. The pressing component is disposed above the housing portion; the pressing component can move vertically to approach or move away from the housing portion; the pressing component includes several pressure blocks arranged in an array.

[0007] Furthermore, the pressure holding device for battery cell stacking modules provided by this utility model may also have the following feature: it further includes a lifting component for driving the pressing component to move in the vertical direction.

[0008] Furthermore, the pressure-holding device for battery cell stacking modules provided by this utility model may also have the following features: the lifting assembly includes at least one screw jack, a mounting part for mounting the screw jack and a driving part for driving the screw jack, wherein the first section of the screw jack is connected to the mounting part and the second section is connected to the pressing assembly.

[0009] Furthermore, the pressure-holding device for battery cell stacking modules provided by this utility model may also have the following features: the lifting assembly further includes a guide shaft, the mounting part is provided with a guide hole with a hole opened in the vertical direction, the guide shaft passes through the guide hole and is connected to the pressing assembly.

[0010] Furthermore, the pressure holding device for battery cell stacking modules provided by this utility model may also have the following features: a limiting ring for limiting the movement limit of the pressing component is provided on the guide shaft, and the limiting ring is sleeved on the guide shaft; when the pressing component reaches the limit of the movement limit, the limiting ring abuts against the mounting part.

[0011] Furthermore, the pressure holding device for battery cell stacking modules provided by this utility model may also have the following features: the lifting assembly further includes a height indicator, the height indicator includes a height scale disposed on the mounting part, and a scale pointer that cooperates with the height scale to indicate, the scale pointer being disposed on the guide shaft.

[0012] Furthermore, the pressure-holding device for battery cell stacking modules provided by this utility model may also have the following feature: the mounting part can move along the length direction and / or width direction of the housing.

[0013] Furthermore, the pressure-holding device for battery cell stacking modules provided by this utility model may also have the following feature: the receiving portion can move vertically to approach or move away from the pressure-down component.

[0014] Furthermore, the pressure holding device for battery cell stacking modules provided by this utility model may also have the following features: it further includes a base, on which a plurality of lifting parts for lifting the receiving part are provided, the lifting parts can move in a vertical direction, and their top ends abut against the bottom end of the receiving part.

[0015] Furthermore, the pressure holding device for battery cell stacking modules provided by this utility model may also have the following features: including a transfer component that can be moved to or away from the pressure-down component, and the transfer component is provided with the receiving portion.

[0016] The beneficial effects of this utility model are as follows:

[0017] Compared to the pressure-holding equipment that individually compresses each battery cell, this application requires the overall compression of several battery cell stack modules. Therefore, a large-area, array-laid pressure block is designed to achieve the effect of uniformly distributing the downward pressure, thereby ensuring the accurate insertion depth and position of the battery cell stack modules in the box. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the lifting assembly of this utility model;

[0021] Figure 3 This is a first-view structural schematic diagram of the pressing component of this utility model;

[0022] Figure 4 This is a second-view structural schematic diagram of the pressing component of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the transfer component of this utility model;

[0024] Figure 6 This is a schematic diagram of the base of this utility model.

[0025] In the picture:

[0026] 1. Pressing assembly; 11. Pressing block; 12. Connecting plate; 13. Mounting bracket; 14. Mounting strip; 2. Transfer assembly; 21. Transfer cart; 22. Handrail; 23. Support component; 24. Limiting beam; 25. Reception part; 3. Cell stacking module; 4. Box; 51. Screw jack; 52. Mounting part; 53. First handwheel; 54. Transmission component; 61. Guide shaft; 62. Guide hole; 63. Limiting ring; 71. Height scale; 72. Scale pointer; 8. Frame; 81. First slide rail; 82. Second slide rail; 83. First slider; 84. Second slider; 85. Second handwheel; 86. Third handwheel; 9. Base; 91. Lifting part; 92. Support part; 93. Limiting plate. Detailed Implementation

[0027] 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, not all, of the embodiments of this utility model. 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.

[0028] like Figure 5 As shown, several battery cell stacking modules 3 are arranged in an array inside a housing 4. Since these battery cell stacking modules may not reach the correct depth or have their position shifted when being squeezed into the housing by a crane, this invention provides a pressure-holding device for the battery cell stacking modules 3. This device continuously compresses the several battery cell stacking modules 3 located inside the housing 4. The specific structure is as follows:

[0029] like Figures 1 to 6 As shown, the pressure-holding device includes a pressing assembly 1 for pressing the cell stacking module 3 and a transfer assembly 2 that can be moved to or away from the pressing assembly 1. The transfer assembly 2 is provided with a receiving portion 25 for accommodating the housing 4. The pressing assembly 1 is located above the receiving portion 25 and can move vertically to approach or move away from the receiving portion 25. Specifically, as... Figure 5 As shown, the transfer assembly 2 includes a transfer cart 21 and a handrail 22 for manual operation of the transfer cart 21. The accommodating part 25 includes a support member 23 on the transfer cart 21 and limiting beams 24 on both sides of the support member 23. The support member 23 is composed of several rubber pads arranged in an array. The box body 4 is disposed on several rubber pads, and both sides of it abut against the limiting beams 24 to restrict the movement of the box body 4 along its own width direction. Figure 1 and Figure 4As shown, the pressing assembly 1 includes several pressing blocks 11 arranged in an array, and the pressing blocks 11 are preferably insulating pressing blocks. During use, before the cell stacking module 3 is placed into the housing 4, the bottom surface inside the housing 4 has been coated with adhesive. After the cell stacking module 3 is pressed into place by the pressing blocks 11, the pressing assembly 1 remains stationary to maintain pressure for 5-20 minutes, waiting for the adhesive to be compacted and cured. Compared to pressure-maintaining devices that disperse and compress each cell individually, considering the need for pressure maintenance in this application... Figure 5 The several battery cell stacked modules 3 shown are subjected to overall compression. Therefore, a large-area, array-laid pressure block 11 is designed to achieve the effect of uniformly distributing the downward pressure.

[0030] The pressure-holding device also includes a lifting assembly for driving the pressing component 1 to move vertically. The lifting assembly can be driven primarily by a screw jack, hydraulic jack, pneumatic jack, etc., to move the pressing component 1 vertically; in this embodiment, a screw jack is preferred. Figure 1 and Figure 2 As shown, the lifting assembly includes two screw jacks, a mounting part 52 for mounting the screw jacks, and a drive part for driving the screw jacks. The two screw jacks are respectively located on both sides of the mounting part 52 along the width direction of the housing 4 to meet the requirement of uniform downward pressure. The first section of the screw jack is movably connected to the mounting part 52, and the second section is rigidly connected to the downward pressure assembly 1. Specifically, the screw jack includes a lead screw. The first section of the lead screw is connected to the mounting part 52 through a nut. The nut cooperates with the lead screw and moves along the axial direction of the lead screw as it rotates. The second section of the lead screw is connected to the downward pressure assembly 1 through a connecting flange. The drive part can be electrically driven or manually driven. In this embodiment, the drive part preferably includes a first handwheel 53 and a transmission component 54 for connecting the first handwheel 53 and the screw jack 51. The transmission component 54 can be a standard commutator product to convert the rotation of the handwheel into the rotation of the lead screw. In use, the first handwheel 53 is manually rotated to drive the lead screw of the screw jack 51 to rotate, thereby moving the downward pressure assembly 1.

[0031] To ensure that the downward pressing component 1 moves vertically without deviation, thereby ensuring the accurate placement of the cell stacking module 3 into the box, such as... Figure 2 and Figure 3 As shown, the lifting assembly also includes a guide shaft 61 that extends vertically. Specifically, the mounting part 52 is provided with a guide hole 62 that opens vertically, and the guide shaft 61 passes through the guide hole 62 and is connected to the pressing assembly 1.

[0032] Furthermore, such as Figure 3 As shown, a limiting ring 63 is provided on the guide shaft 61 to limit the movement limit of the pressing component 1. The limiting ring 63 is sleeved on the guide shaft 61. When the pressing component 1 reaches the movement limit, the limiting ring 63 abuts against the mounting part 52.

[0033] like Figure 2 and Figure 3 As shown, the lifting assembly also includes a height indicator, which includes a height scale 71 mounted on the mounting part 52 and a scale pointer 72 that cooperates with the height scale 71 for indication. The scale pointer 72 is mounted on the guide shaft 61. In use, since the position of the scale pointer 72 relative to the mounting part 52 changes as the screw jack 51 drives the pressing assembly 1 to move, the operator can determine the pressing limit by observing the scale mark on the height scale 71 pointed to by the scale pointer 72.

[0034] like Figure 3 and Figure 4 As shown, the pressing assembly 1 includes a connecting plate 12. The guide shaft 61 and the screw jack 51 mentioned above are both connected to one side of the connecting plate 12, and the other side of the connecting plate 12 is provided with a mounting bracket 13 for connecting the pressing blocks 11. The mounting bracket 13 includes a plurality of parallel spaced mounting strips 14. The length direction of the mounting strips 14 is parallel to the width direction of the housing 4. The length direction of the pressing blocks 11 is parallel to the length direction of the housing 4, and each pressing block 11 is connected to at least four mounting strips 14, which can ensure the stability of the connection of the pressing blocks 11 and further disperse the downward pressure, so that every part of the cell stacking module 3 can be subjected to the same pressure. Preferably, the pressing blocks 11 and the mounting strips 14 are detachably connected by bolts, which facilitates the replacement of the pressing blocks 11.

[0035] The mounting part 52 can move along the length and width of the housing 4 to ensure that the pressing assembly 1 is correctly positioned to press the cell stacking module 3. Specifically, as Figure 1 and Figure 2As shown, the pressure-holding device includes a fixed base 9, and a mounting part 52 is mounted on the base 9 via a frame 8. The frame 8 includes two first slide rails 81 extending along the length of the housing 4, multiple first sliders 83 disposed within the first slide rails 81, multiple second slide rails 82 connected to the first sliders 83 and extending along the width of the housing 4, and multiple second sliders 84 disposed within the second slide rails 82. The two first slide rails 81 are respectively disposed on both sides of the second slide rails 82, and the mounting part 52 is connected to the multiple second sliders 84. The pressure-holding device also includes a second handwheel 85, the first section of which is connected to the first slider 83, and the second section is connected to the mounting part 52 via a screw and nut mechanism. The pressure-holding device also includes a third handwheel 86, the first section of which is connected to the beam of the fixed frame 8, and the second section is connected to the second slide rail 82 via a screw and nut structure. In use, the operator turns the second handwheel 85, which drives the connected mounting part 52. The mounting part 52 drives the second slider 84 to move in the second slide rail 82, thereby adjusting the movement of the mounting part 52 along the width direction of the housing 4. The operator turns the third handwheel 86, which drives the connected second slide rail 82. The second slide rail 82 drives the first slider 83 to move in the first slide rail 81, thereby adjusting the movement of the mounting part 52 along the length direction of the housing 4.

[0036] While the pressing component 1 is pressing down, the receiving portion 25 can also move vertically to move closer to or further away from the pressing component 1. Specifically, as... Figure 1 and Figure 6 As shown, the base 9 is provided with a plurality of lifting parts 91 for lifting the receiving part 25. The lifting parts 91 can move in a vertical direction, and their top ends abut against the bottom end of the receiving part 25. The selection of the lifting parts 91 is not unique; in this embodiment, an electric push rod is preferred. Furthermore, to further serve a positioning function, the bottom end of the receiving part 25 is provided with a positioning groove (not shown in the figure) corresponding to the position of the lifting parts 91.

[0037] Furthermore, the base 9 includes two support parts 92, and the gap between the two support parts 92 is used to accommodate the wheels of the transfer vehicle 21; in order to limit the position of the positioning transfer vehicle 21 when it moves under the pressing component 1, a limiting plate 93 is provided between the two support parts 92 to stop the transfer vehicle 21 from traveling in the length direction of the box 4.

[0038] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.

[0039] In the description of this invention, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0040] In the description of this invention, it should also be noted that the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 invention. In the description of this invention, unless otherwise stated, "a number" means two or more.

[0041] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A pressure-holding device for a battery cell stacking module (3), used to continuously compress a plurality of battery cell stacking modules (3) disposed within a housing (4), characterized in that, It includes a receiving part (25) for accommodating the housing (4) and a pressing assembly (1) for pressing the cell stacking module (3), the pressing assembly (1) being disposed above the receiving part (25); the pressing assembly (1) being movable in the vertical direction to approach or move away from the receiving part (25); the pressing assembly (1) including a plurality of pressing blocks (11) arranged in an array.

2. The pressure-holding device for a cell stacking module (3) according to claim 1, characterized in that, It also includes a lifting assembly for driving the pressing assembly (1) to move in the vertical direction.

3. The pressure-holding device for a cell stacking module (3) according to claim 2, characterized in that, The lifting assembly includes at least one screw jack (51), a mounting part (52) for mounting the screw jack (51), and a driving part for driving the screw jack (51). The first section of the screw jack (51) is movably connected to the mounting part (52), and the second section is rigidly connected to the pressing assembly (1).

4. The pressure holding device for a cell stacking module (3) according to claim 3, characterized in that, The lifting assembly also includes a guide shaft (61), and the mounting part (52) is provided with a guide hole (62) with a hole in the vertical direction. The guide shaft (61) passes through the guide hole (62) and is connected to the pressing assembly (1).

5. The pressure holding device for a cell stacking module (3) according to claim 4, characterized in that, The guide shaft (61) is provided with a limiting ring (63) for limiting the movement limit of the pressing component (1). The limiting ring (63) is sleeved on the guide shaft (61). When the pressing component (1) reaches the limit of the movement limit, the limiting ring (63) abuts against the mounting part (52).

6. The pressure-holding device for a cell stacking module (3) according to claim 4, characterized in that, The lifting assembly also includes a height indicator, which includes a height scale (71) disposed on the mounting part (52) and a scale pointer (72) that cooperates with the height scale (71) to indicate, and the scale pointer (72) is disposed on the guide shaft (61).

7. The pressure-holding device for a cell stacking module (3) according to claim 3, characterized in that, The mounting part (52) can move along the length and / or width of the housing (4).

8. The pressure-holding device for a cell stacking module (3) according to claim 1, characterized in that, The receiving portion (25) can move vertically to approach or move away from the pressing assembly (1).

9. The pressure holding device for a cell stacking module (3) according to claim 8, characterized in that, It also includes a base (9), on which are provided a plurality of lifting parts (91) for lifting the accommodating part (25). The lifting parts (91) can move in the vertical direction and their top end abuts against the bottom end of the accommodating part (25).

10. The pressure-holding device for a cell stacking module (3) according to claim 1, characterized in that, It includes a transfer assembly (2) that can be moved to or away from the pressure assembly (1), and the transfer assembly (2) is provided with the receiving portion (25).

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