Variable thickness pouch cell fixture push block

Abstract

The utility model relates to a kind of soft package battery cell clamp push block of variable thickness, comprising: first push block component, including first base and multiple first push head part, each first push head part has first base surface and first push face, and first push face includes first inclined guide section and first straight section;Second push block component is detachably connected to first push block component, each second push block component includes second base and multiple second push head part, the number of second push head part is consistent with the number of first push head part, each second push head part has second base surface and second push face, and second push face includes second inclined guide section and second straight section;Each first base surface and corresponding second base surface are opposite each other left and right;And push head width adjusting mechanism is arranged between first push block component and second push block component.The clamp push block of the scheme can be adjusted by adjusting push block thickness, flexibly adapt to different tab thickness of soft package battery cell, accurately control the contact resistance of clamp and battery cell tab and tab indentation.

Description

Technical Field

[0001] This application relates to the field of battery charging and discharging testing equipment technology, and in particular to a variable thickness soft-pack battery cell clamping pusher with a split clamping pusher block. Background Technology

[0002] In pouch cell charge / discharge testing equipment, a double-sided clamp achieves charge / discharge circuit continuity by clamping the cell tabs. Its contact resistance and tab indentation are key indicators related to test safety and accuracy. For example... Figure 1 As shown, in existing technologies, the push block for driving the opening and closing of the clamp is mostly a one-piece fixed design. The thickness of its straight section determines the clamping force. This rigid structure can only adapt to the thickness of a single type of battery cell tab. When the production line switches to different models of battery cells with varying tab thicknesses, the fixed push block cannot adjust the clamping force, resulting in either too loose clamping, increased contact resistance leading to overheating, or too tight clamping, resulting in excessive indentation and damage to the tab. This severely restricts the equipment's versatility and production efficiency, while also increasing spare parts management and downtime costs for model changes. Therefore, there is an urgent need for a clamp push block mechanism with adjustable clamping force to adapt to battery cell tabs of different thicknesses, saving equipment changeover time and delivery costs while ensuring stable contact resistance and controlled tab indentation. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this invention is to provide a split-type clamping pusher block for variable thickness soft-pack battery cells, capable of adjusting the pusher block thickness to accommodate different tab thicknesses of soft-pack battery cells.

[0004] Therefore, this utility model provides a variable thickness soft-pack battery cell clamp pusher block, comprising: a first pusher component, including a first base and a plurality of first push heads evenly distributed in the left-right direction on the front side of the first base, each of the first push heads having a first base surface and a first pushing surface on the left side of the first base surface, the first pushing surface including a first inclined guide section and a first straight section located on the rear side of the first inclined guide section and intersecting with the first base; and a second pusher component, detachably mounted to the first pusher component, the second pusher component including a second base and a plurality of second push heads evenly distributed in the left-right direction on the front side of the second base, the second push heads... The number of parts is the same as the number of the first push head. Each of the second push heads has a second base surface and a second pushing surface located to the right of the second base surface. The second pushing surface includes a second inclined guide section and a second straight section located behind the second inclined guide section and intersecting with the second base. Each of the first base surfaces and the corresponding second base surfaces are opposite each other to each other on the left and right. A push head width adjustment mechanism is arranged between the first push block component and the second push block component and is configured to drive one of the first push block component and the second push block component to move in the left and right direction relative to the other component. The push head width adjustment mechanism includes an adjustment screw.

[0005] In some embodiments, the outer contour shapes of the first pusher component and the second pusher component are identical.

[0006] In some embodiments, both the first base and the second base are L-shaped.

[0007] In some embodiments, the left side portion of the first base and the left side portion of the second base are provided with a first set screw hole extending in the left-right direction, and the adjusting screw is configured to be inserted into the first set screw hole.

[0008] In some embodiments, the right side portion of the first base and the right side portion of the second base are provided with a second set screw hole extending in the left-right direction, and the adjusting screw is configured to be inserted into the second set screw hole.

[0009] In some embodiments, both the first base and the second base are provided with a plurality of screw fixing holes, and the positions of each screw fixing hole on the first base correspond one-to-one with the positions of each screw hole on the second base.

[0010] In some embodiments, the plurality of screw fixing holes are respectively located at the four apex corners of the first base and the second base, and a pair of fixing screws are respectively placed into a pair of screw fixing holes corresponding to a set of diagonally opposite corners of the four apex corners, so that the first push block component and the second push block component can be fixedly connected.

[0011] In some embodiments, the screw fixing hole on one of the components of the first base and the second base is an elongated hole.

[0012] Compared with existing technologies, this utility model adopts a split-design clamping pusher block, and achieves stepless adjustment of the pusher head thickness through a pusher head width adjustment mechanism, thereby flexibly adapting to the tabs of soft-pack battery cells of different thicknesses. This structure can precisely control the tab indentation depth while meeting the contact resistance requirements between the clamp and the tab, avoiding overvoltage damage or poor contact. Simultaneously, the pusher head width adjustment mechanism maintains a constant thickness of the straight section of each pusher head during production, ensuring stable clamping force and significantly improving the consistency and reliability of battery cell production. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a battery cell clamp pusher block in the prior art when it works in conjunction with the clamp.

[0014] Figure 2 This is a three-dimensional structural diagram of a variable thickness soft-pack battery cell clamp pusher provided in an embodiment of this application.

[0015] Figure 3 for Figure 2 The diagram shows a front view of the variable thickness soft-pack battery cell clamp pusher block.

[0016] Figure 4 for Figure 2 The diagram shows a front view of the first pusher component.

[0017] Figure 5 for Figure 2 A three-dimensional schematic diagram of the first pusher component shown.

[0018] Figure 6 for Figure 2 The front view of the second pusher component shown.

[0019] Figure 7 for Figure 2 A three-dimensional schematic diagram of the second pusher component shown.

[0020] Among them, 100, variable thickness soft-pack battery cell clamp push block; 10, push head; 1, first push block component; 11, first base; 12, first push head; 121, first base surface; 122, first pushing surface; 101, first inclined guide section; 102, first straight section; 13, set screw hole; 14, screw fixing hole; 2, second push block component; 21, second base; 22, second push head; 221, second base surface; 222, second pushing surface; 103, second inclined guide section; 104, second straight section; 3, push head width adjustment mechanism; 30, gap; 31, adjusting screw. Detailed Implementation

[0021] This application relates to a variable thickness soft-pack battery cell clamping push block, and more particularly to a variable thickness soft-pack battery cell clamping push block configured as a split clamping push block, which can adjust the width of the push block to adapt to different tab thicknesses of the soft-pack battery cell, and can improve the adaptability, operating efficiency and overall equipment utilization rate of the clamp while ensuring the stability of tab contact resistance and indentation quality.

[0022] See Figures 2-7 This application illustrates a variable thickness soft-pack battery cell clamp pusher block 100. The variable thickness soft-pack battery cell clamp pusher block 100 includes a first pusher component 1 and a second pusher component 2. The second pusher component 2 is detachably attached to the first pusher component 1. A pusher head width adjustment mechanism 3 is arranged between the first pusher component 1 and the second pusher component 2, and is configured to drive one of the components in the first pusher component 1 and the second pusher component 2 to move relative to the other component in a left-right direction. The pusher head width adjustment mechanism 3 includes an adjustment screw 31. Wherein: The first push block component 1 includes a first base 11 and a plurality of first push heads 12 located on the front side of the first base 11 and evenly distributed in the left and right direction. The first push head 12 includes a first base surface 121 and a first pushing surface 122 located on the left side of the first base surface 121. The first pushing surface 122 includes a first inclined guide section 101 and a first straight section 102 located on the rear side of the first inclined guide section 101 and intersecting with the first base 11. The second pusher component 2 includes a second base 21 and a plurality of second push heads 22 evenly distributed in the left-right direction on the front side of the second base 21. The number of second push heads 22 is the same as the number of first push heads 12, used to expand the contact area and uniformly distribute pressure. The second push head 22 includes a second base surface 221 and a second pushing surface 222 located to the right of the second base surface 221. The second pushing surface 222 includes a second inclined guide section 103 and a second straight section 104 located behind the second inclined guide section 103 and intersecting with the second base 21. After the first pusher component 1 and the second pusher component 2 are installed, each first pusher component 1 will be located to the right of each second pusher component 2, and each first base surface 121 and the corresponding second base surface 221 will be opposite each other left and right, thereby forming a plurality of push heads 10 arranged in the left-right direction. A gap 30 is formed between the first base surface 121 and the corresponding second base surface 221 of each push head 10, and the width W of the gap 30 can be a value greater than or equal to 0.

[0023] In this embodiment, the outer contours of the first push block component 1 and the second push block component 2 are completely identical, and the first base 11 of the first push block component 1 and the second base 21 of the second push block component 2 are "L"-shaped. After the second push block component 2 is detachably connected to the first push block component 1, multiple first inclined guide segments 101 and second inclined guide segments 103 together constitute a guide segment for guiding the push block in and out of the fixture; the first straight segment 102 and the second straight segment 104 together constitute a straight segment for controlling the opening and closing state of the fixture to ensure that the clamping force of each fixture is consistent; the size of the straight segment is generally designed according to the thickness of the electrode tab, taking into account the contact resistance between the fixture and the battery cell electrode tab and the electrode tab indentation.

[0024] See Figures 4-7 A set screw hole 13 extending in the left-right direction can be provided at the left side of the first base 11 of the first pusher component 1 and the left side of the second base 21 of the second pusher component 2. The set screw hole 13 is partially located on the left side of the first base 11 and partially on the left side of the second base 11. An adjusting screw 31 is inserted into the set screw hole 13. In this example, set screw holes 13 extending in the left-right direction are also provided at the right side of the first base 11 of the first pusher component 1 and the right side of the second base 21 of the second pusher component 2, and the adjusting screw 31 can also be inserted into these set screw holes. The operator can adjust the width W of the gap 30 by adjusting the depth of the adjusting screw 31 inserted into the corresponding set screw hole 13, thereby adjusting the width of each pusher head 10 to flexibly adapt to different tab thicknesses of the pouch cell.

[0025] In this embodiment, screw fixing holes 14 are provided at the four apex corners of the first base 11 and the second base 12, and these screw fixing holes 14 correspond one-to-one in the vertical direction. A pair of fixing screws (not shown in the figure) are inserted into a set of diagonally opposite screw fixing holes 14, so that the first push block component 1 and the second push block component 2 are fixedly connected, ensuring that the first push block component 1 and the second push block component 2 are subjected to uniform force, and avoiding problems such as warping, deformation or poor sealing of the joint surface. Among them, the screw fixing hole 14 on one component is an elongated oval hole, which facilitates the adjustment of the push head width; when the adjustment range of the push head width is greater than the difference in diameter of the screw fixing holes 14 on both sides, screw fixing holes 14 can be provided at corresponding positions on the first base 11 or the second base 12.

[0026] In this embodiment, the pusher width adjustment mechanism 3 includes a fixed state and an adjustment state. When the pusher width adjustment mechanism 3 is in the fixed state, the screw in the set screw hole 13 remains stationary, and the first pusher component 1 and the second pusher component 2 are fixedly installed by tightening the screw in the screw fixing hole 14. When the pusher width adjustment mechanism 3 is in the adjustment state, the screw in the screw fixing hole 14 is loosened, and then the adjusting screw 31 screwed into the set screw hole 13 drives one of the first pusher component 1 and the second pusher component 2 to move in the left-right direction relative to the other component, thereby changing the distance W of the gap 30 of each pusher 10, thereby adjusting the width of each pusher 10. When the pusher width adjustment mechanism 3 is in the adjustment state, the screw in the set screw hole 13 is always in the set screw hole 13.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. The scope of protection of this utility model is defined by the appended claims, specification, and their equivalents.

Claims

1. A variable thickness flexible battery cell clamping pusher block, characterized in that, include: The first push block component includes a first base and a plurality of first push heads located on the front side of the first base and evenly distributed in the left-right direction. Each of the first push heads has a first base surface and a first pushing surface located on the left side of the first base surface. The first pushing surface includes a first inclined guide section and a first straight section located on the rear side of the first inclined guide section and intersecting with the first base. The second pusher component is detachably attached to the first pusher component. The second pusher component includes a second base and a plurality of second push heads located on the front side of the second base and evenly distributed in the left-right direction. The number of second push heads is the same as the number of first push heads. Each of the second push heads has a second base surface and a second pushing surface located on the right side of the second base surface. The second pushing surface includes a second inclined guide section and a second straight section located on the rear side of the second inclined guide section and intersecting with the second base. Each of the first base surfaces and the corresponding second base surfaces are left-right opposite to each other. as well as A pusher width adjustment mechanism is arranged between the first pusher component and the second pusher component and is configured to drive one of the first pusher component and the second pusher component to move relative to the other component in a left-right direction. The pusher width adjustment mechanism includes an adjustment screw.

2. The variable thickness soft-pack battery cell clamping pusher according to claim 1, characterized in that, The outer contours of the first push block component and the second push block component are identical.

3. The variable thickness soft-pack battery cell clamping pusher according to claim 1, characterized in that, Both the first base and the second base are L-shaped.

4. The variable thickness soft-pack battery cell clamping pusher according to claim 1, characterized in that, The left side portion of the first base and the left side portion of the second base are provided with a first set screw hole extending in the left-right direction, and the adjusting screw is configured to be inserted into the first set screw hole.

5. The variable thickness soft-pack battery cell clamping pusher according to claim 4, characterized in that, The right side portion of the first base and the right side portion of the second base are provided with a second set screw hole extending in the left-right direction, and the adjusting screw is configured to be inserted into the second set screw hole.

6. The variable thickness soft-pack battery cell clamping pusher according to claim 1, characterized in that, Both the first base and the second base are provided with a plurality of screw fixing holes, and the screw fixing holes on the first base and the screw fixing holes on the second base are located in a one-to-one correspondence.

7. The variable thickness soft-pack battery cell clamping pusher according to claim 6, characterized in that, The plurality of screw fixing holes are located at the four apex corners of the first base and the second base, and a pair of fixing screws are respectively placed into a pair of screw fixing holes corresponding to a set of diagonally opposite corners of the four apex corners, so that the first push block component and the second push block component can be fixedly connected.

8. The variable thickness soft-pack battery cell clamping pusher according to claim 6, characterized in that, The screw fixing hole on one of the components of the first base and the second base is an elongated hole.

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