Formation machine pressing strip fixing structure
By designing a strip fixing structure including laminates, strips, pads, plates and fasteners, the problem of poor contact of the electrodes and strips being brought out caused by the strip gap of the rotors of the rotors is solved, and more stable battery cell fixation and normal operation of the equipment are achieved.
Patent Information
- Application Number
- CN202420830153.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-04-19
AI Technical Summary
The existing cracks in the pressing machine are not in contact with the ears, and the pressing strips are easily removed with the battery cell after the melting process, which leads to equipment failure.
A strip fixing structure including a layer plate, a strip, a pad, a pad, a plate and a fastener is designed. By extending the top of the strip from the top of the mounting groove for a distance, and providing an adjustable positioned plate at the edge of the mounting groove opening, the upward movement of the strip is blocked.
The problem of poor contact with the extreme ear is solved. By staggering the pressure gap and the extreme ear, uneven force is avoided; at the same time, the pressure strip is prevented from being taken out after the transformation is completed, and equipment failure is avoided.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium battery production equipment, and in particular mainly relates to a forming machine pressure strip fixing structure. Background Art
[0002] Lithium-ion battery formation is the first charging process of lithium-ion batteries. The purpose is to make the battery electrochemically active and form a layer of solid electrolyte interface film, namely SEI film, on the surface of the negative electrode to protect the electrolyte. During formation, the battery is fixed on the formation machine and the tabs are in contact with the contacts on the PCB to connect to the power supply and form a charging circuit.
[0003] The existing forming machine is provided with a plurality of layers for placing battery cells. The battery cells are arranged between the layers. Long grooves are provided on the layers. The tabs of the battery cells are pressed and fixed by a plurality of spring strips embedded in the long grooves, so that the tabs and the contact parts form a stable circuit conduction. However, the above structure has the following two technical problems:
[0004] First, there are gaps between adjacent pressure strips. When the gaps between the pressure strips are pressed on the tabs, the uneven force may easily lead to poor contact of the tabs, making the battery cell unable to charge.
[0005] Secondly, due to the heat generated during formation, the tabs will adhere to the pressure strips to a certain extent after the formation is completed, which may cause the pressure strips to be taken out of the slot when the robot arm of the overhead crane removes the battery cell, thus causing equipment failure.
[0006] In view of this, it is necessary to improve the existing pressure strip fixing structure. Utility Model Content
[0007] In view of the deficiencies in the prior art, the utility model provides a forming machine pressure strip fixing structure to solve the problem of poor contact caused by the pressure strip gap pressing on the pole ear during formation and the pressure strip being easily taken out of the groove when the battery cell is removed after formation.
[0008] The utility model discloses a forming machine pressure strip fixing structure, comprising a layer plate, a pressure strip, a cushion block, a pressing piece and a fastener, wherein the layer plate is provided with a strip-shaped installation groove, the installation groove is arranged in the up-down direction, the top of the installation groove forms an opening at the edge of the layer plate, a plurality of pressure strips are provided, and a plurality of the pressure strips are continuously arranged in the installation groove, the pressure strip is elastically connected to the installation groove, and the upper end of the pressure strip located at the top extends out of the top opening of the installation groove; the cushion block is installed on the layer plate and is located on one side of the top opening of the installation groove, an adjustment groove is provided on the cushion block, the pressing piece is slidably connected in the adjustment groove, the fastener is connected to the cushion block and the pressing piece, the fastener is used to fix the pressing piece on the cushion block, and the pressing piece is used to prevent the pressure strip from moving upward.
[0009] Preferably, four pressure strips are provided, the width of the pressure strips is the same as the width of the mounting groove, and the pressure strips are connected to the mounting groove via springs.
[0010] Preferably, the length of the upper end of the pressure strip located at the top extending out of the top opening of the mounting groove is 10 mm.
[0011] Preferably, the cushion block is a rectangular block, and the upper surface of the cushion block is flush with the upper surface of the pressure strip located at the top.
[0012] Preferably, a connecting groove is formed on the pressing sheet, a positioning hole is formed in the adjusting groove, and the fastener passes through the connecting groove and is connected in the positioning hole.
[0013] Preferably, the positioning hole is a threaded hole, the fastener is a screw, and the fastener is rotated to lock the pressing plate on the cushion block, or to unlock the pressing plate from the cushion block.
[0014] Preferably, when a portion of the end of the pressing sheet extends above the top of the mounting groove, the upward movement of the pressing strip is blocked by the pressing sheet.
[0015] Preferably, the length of the pressing piece end extending above the mounting groove is 1 mm.
[0016] Preferably, the fastener is an M3*16 hexagon socket head screw.
[0017] Preferably, the adjusting groove is rectangular, the pressing sheet is rectangular, the connecting groove is a waist-shaped groove, and the connecting groove is arranged along the length direction of the pressing sheet.
[0018] The beneficial effects of the utility model are:
[0019] By extending the top of the pressure strip out of the top of the mounting groove for a certain distance, the gap between the pressure strips can be staggered with the tabs during formation, thereby solving the problem of poor contact of the tabs. By arranging a pressure piece with adjustable position at the edge of the mounting groove opening, the pressure piece can block the position of the pressure strip when the overhead crane clamps the battery cell, thereby solving the problem of the pressure strip being easily brought out of the groove when the battery cell is removed after formation. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0022] Figure 2 This is a schematic diagram of the state where the pressing sheet prevents the pressing strip from moving upward;
[0023] Figure 3 Schematic diagram of the connection relationship between the pad and the pressing plate.
[0024] Explanation of the reference numerals: 01, battery cell; 011, pole ear; 1, layer plate; 11, mounting groove; 2, pressure strip; 3, pad; 31, adjustment groove; 32, positioning hole; 4, pressing sheet; 41, connecting groove; 5, fastener. DETAILED DESCRIPTION
[0025] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:
[0026] Reference Figure 1-3 , is a forming machine pressure strip fixing structure disclosed by the utility model, including a layer plate 1, a pressure strip 2, a cushion block 3, a pressing sheet 4 and a fastener 5, wherein a mounting groove 11 is opened on one side surface of the layer plate 1, and the mounting groove 11 is a long strip-shaped groove. Both ends of the mounting groove 11 in the length direction penetrate the layer plate 1, and the mounting groove 11 is vertically arranged along the up and down direction. A plurality of pressure strips 2 are provided, and the pressure strips 2 are rectangular blocks with the same width as the width of the mounting groove 11. In this embodiment, four pressure strips 2 are provided, and the pressure strips 2 are continuously arranged in the mounting groove 11 and are connected to the bottom of the mounting groove 11 by a spring. When the battery cell 01 is formed, the elastic force of the spring can achieve the purpose of pushing the pressure strip 2 to press the pole ear 011 onto the PCB board (not shown in the figure).
[0027] Reference Figure 1-3The pressure strip 2 at the top extends out from the upper end of the mounting groove 11. Specifically, the upper end of the top pressure strip 2 is 10 mm higher than the top of the mounting groove 11. Compared with the manner in which the pressure strip 2 is completely embedded in the mounting groove 11, this arrangement enables the gaps between the multiple pressure strips 2 to move upward as a whole for a certain distance, so that the tabs 011 of the battery cell 01 can be staggered with the gaps of the pressure strips 2 during formation, thereby avoiding the problem of uneven force on the tabs 011 caused by the gaps of the pressure strips 2 pressing on the tabs 011.
[0028] Reference Figure 1-3 The pad 3 is arranged on the top of the layer plate 1, and the pad 3 is located at the edge of the top opening of the installation groove 11. The pad 3 is a rectangular block. The bottom edge of the pad 3 is parallel to the top edge of the layer plate 1. The upper surface of the pad 3 is flush with the upper surface of the top pressure strip 2. An adjustment groove 31 is provided on the upper surface of the pad 3. The adjustment groove 31 is a long strip-shaped groove. The adjustment groove 31 forms an opening on two opposite edges of the pad 3, and the opening of the adjustment groove 31 corresponds to the end opening of the installation groove 11. The pressing sheet 4 is a rectangular metal sheet. The width of the pressing sheet 4 is the same as the width of the adjusting groove 31. The pressing sheet 4 slides The pressing piece 4 is dynamically connected in the adjusting groove 31, and a waist-shaped connecting groove 41 is provided on the pressing piece 4. The connecting groove 41 is arranged along the length direction of the pressing piece 4. Correspondingly, a circular positioning hole 32 is provided at the bottom of the adjusting groove 31. The positioning hole 32 is a threaded hole. The fastener 5 preferably adopts a semicircular head hexagon socket screw of M3*16. The fastener 5 passes through the connecting groove 41 and is connected to the positioning hole 32. By sliding the pressing piece 4 in the adjusting groove 31, the position of the pressing piece 4 can be changed. By rotating the fastener 5, the fastener 5 is pressed against the pressing piece 4, and the position of the pressing piece 4 in the adjusting groove 31 can be locked.
[0029] When the battery cell 01 is formed, the locking of the pressing piece 4 is released by rotating the fastener 5, so that the pressing piece 4 can slide in the adjustment groove 31. After a part of the end of the pressing piece 4 is extended above the top of the installation groove 11, the position of the pressure strip 2 moving up and down will be blocked by the pressing piece 4. Therefore, when the vehicle clamps the battery cell 01, even if the tab 011 is adhered to the pressure strip 2, the pressure strip 2 can be stably connected to the installation groove 11 under the blockage of the pressing piece 4, thereby avoiding the occurrence of equipment failure. Specifically, the length of the end of the pressing piece 4 extending above the installation groove 11 is 1 mm.
[0030] The implementation principle and beneficial effect of the utility model are as follows: by extending the top of the pressure strip 2 out of the top of the mounting groove 11 by a certain distance, the gap between the pressure strips 2 can be staggered with the pole ear 011 during formation, thereby solving the problem that the pole ear 011 is prone to poor contact; by arranging a pressure sheet 4 with an adjustable position at the edge of the opening of the mounting groove 11, the pressure sheet 4 can form a blocking effect on the position of the pressure strip 2 when the overhead crane clamps the battery cell 01, thereby solving the problem that the pressure strip 2 is easily brought out of the groove when the battery cell 01 is removed after the formation is completed.
[0031] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.
Claims
1. A forming machine layer strip fixing structure, characterized in that: The invention comprises a layer plate (1), a pressure strip (2), a cushion block (3), a pressing sheet (4) and a fastener (5); the layer plate (1) is provided with a strip-shaped installation groove (11), the installation groove (11) is arranged in the up-down direction, the top of the installation groove (11) forms an opening at the edge of the layer plate (1), a plurality of pressure strips (2) are provided, and the plurality of pressure strips (2) are continuously arranged in the installation groove (11); the pressure strip (2) is elastically connected to the installation groove (11), and the upper end of the pressure strip (2) located at the top protrudes out of the top opening of the installation groove (11); The cushion block (3) is installed on the layer board (1) and is located on one side of the top opening of the installation groove (11). An adjustment groove (31) is provided on the cushion block (3). The pressing plate (4) is slidably connected in the adjustment groove (31). The fastener (5) is connected to the cushion block (3) and the pressing plate (4).
2. The forming machine layer strip fixing structure according to claim 1, characterized in that: Four pressure strips (2) are provided, the width of the pressure strips (2) is the same as the width of the installation groove (11), and the pressure strips (2) are connected to the installation groove (11) via a spring.
3. The forming machine layer strip fixing structure according to claim 1, characterized in that: The length of the upper end of the pressure strip (2) located at the top extending out of the top opening of the installation groove (11) is 10 mm.
4. The forming machine layer strip fixing structure according to claim 1, characterized in that: The cushion block (3) is a rectangular block, and the upper surface of the cushion block (3) is flush with the upper surface of the pressure strip (2) located at the top.
5. The forming machine layer strip fixing structure according to claim 1, characterized in that: The pressing sheet (4) is provided with a connecting groove (41), the adjusting groove (31) is provided with a positioning hole (32), and the fastener (5) passes through the connecting groove (41) and is connected to the positioning hole (32).
6. The forming machine layer strip fixing structure according to claim 5, characterized in that: The positioning hole (32) is a threaded hole, and the fastener (5) is a screw. The fastener (5) is rotated to lock the pressing plate (4) on the cushion block (3), or to unlock the pressing plate (4) and the cushion block (3).
7. The forming machine layer strip fixing structure according to claim 1, characterized in that: When a portion of the end of the pressing sheet (4) extends above the top of the mounting groove (11), the upward movement of the pressing strip (2) is blocked by the pressing sheet (4).
8. The forming machine layer strip fixing structure according to claim 7, characterized in that: The length of the end of the pressing sheet (4) extending above the mounting groove (11) is 1 mm.
9. The forming machine layer strip fixing structure according to claim 5, characterized in that: The fastener (5) is an M3*16 hexagon socket head screw.
10. The forming machine layer strip fixing structure according to claim 5, characterized in that: The adjusting groove (31) is rectangular, the pressing sheet (4) is rectangular, the connecting groove (41) is a waist-shaped groove, and the connecting groove (41) is arranged along the length direction of the pressing sheet (4).