Clamp structure and formation device

Abstract

The utility model belongs to the technical field of formation devices, and particularly relates to a clamp structure and a formation device, and the clamp structure comprises a first laminate and a PCB fixing plate which are located on the same side; the second layer plate is arranged on one side opposite to the first layer plate; the pressing block is arranged on one side opposite to the PCB fixing plate; wherein the second layer plate is fixed at the output end of a first driving mechanism, the first driving mechanism is used for driving the second layer plate to press a battery cell, the pressing block and the PCB fixing plate are fixed at the output end of the second driving mechanism, and the second driving mechanism is used for adjusting the positions of the pressing block and the PCB fixing plate. According to the utility model, through optimizing the clamp structure, the height of the PCB can be adjusted, and the problem of indentation generated in the formation process of the battery cell tab can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of formation devices, and particularly relates to a clamp structure and a formation device. Background Art

[0002] Nowadays, lithium-ion batteries, as a new type of secondary battery, have the advantages of high energy density and power density, high operating voltage, light weight, small size, long cycle life, good safety, and green environmental protection. They have broad application prospects in portable appliances, power tools, large-scale energy storage, electric transportation power supply, etc.

[0003] Among them, the formation of lithium batteries is the initial chemical reaction of the battery, which activates the active substances in the battery cells, which is a process of energy conversion.

[0004] In the process of realizing the present invention, the inventors found that the prior art has at least the following problems:

[0005] The tabs of soft-pack batteries produced with existing formation equipment produce a noticeable indentation, causing problems with subsequent soldering. This is primarily due to the inability to adjust the height of the PCB, which causes a mismatch between the cell thickness and the PCB height, leading to the indentation. Utility Model Content

[0006] One of the purposes of the present invention is to address the deficiencies of the prior art and provide a clamp structure that can adjust the height of the PCB board by optimizing the clamp structure, thereby helping to solve the problem of indentations on the battery cell tabs during the formation process.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A fixture structure includes a first layer plate and a PCB fixing plate, located on the same side; a second layer plate, arranged on the side opposite the first layer plate; and a pressure block, arranged on the side opposite the PCB fixing plate. The second layer plate is fixed to the output end of a first drive mechanism, the first drive mechanism is used to drive the second layer plate to compress the battery cells, the pressure block and the PCB fixing plate are fixed to the output end of a second drive mechanism, and the second drive mechanism is used to adjust the positions of the pressure block and the PCB fixing plate.

[0009] Preferably, the first driving mechanism includes a first motor and a first screw rod, the first screw rod is connected to the output end of the first motor, and the first screw rod is connected to the second layer plate.

[0010] Preferably, a reducer is provided between the first motor and the first screw rod, the first motor drives the reducer, and the reducer drives the first screw rod to rotate.

[0011] Preferably, the second driving mechanism includes a second motor and a second screw rod, the second screw rod is connected to the output end of the second motor, and the second screw rod is respectively connected to the pressing block and the PCB fixing plate.

[0012] Preferably, a plurality of the second layer plates are arranged at intervals along the direction of the first screw rod, and each of the second layer plates is arranged opposite to the first layer plate.

[0013] Preferably, a plurality of the pressing blocks are arranged at intervals along the direction of the second screw rod, and each of the pressing blocks is arranged opposite to the PCB fixing plate.

[0014] Preferably, the battery cells are installed on the side of the first layer board facing the second layer board, and the PCB board is installed on the side of the PCB fixing plate facing the pressing block. The first driving mechanism drives the second layer board to move toward the first layer board, and the second driving mechanism drives the PCB fixing plate and the pressing block to move closer to each other.

[0015] Preferably, the two PCB fixing plates are located on both sides of the first layer board in the length direction, and the two pressing blocks are located on both sides of the second layer board in the length direction.

[0016] Preferably, a mounting frame is further included, and a plurality of the first layer boards, the PCB fixing plates, the second layer boards and the pressing blocks are all mounted on the mounting frame.

[0017] A second object of the present invention is to provide a formation device comprising the above-mentioned clamp structure.

[0018] One of the above technical solutions has the following beneficial effects:

[0019] The utility model separates the first layer board and the PCB fixing plate, and drives the PCB fixing plate to move back and forth through the second driving mechanism, so that the front and rear position of the PCB board of the battery cell can be adjusted to match the thickness of the battery cell, which helps to solve the problem of indentation generated by the battery cell tabs during the formation process. At the same time, the second driving mechanism can adjust the position of the pressing block and the PCB fixing plate, that is, it can adjust the pressure applied by the pressing block to the PCB board, which helps to solve the problem of indentation generated by the battery cell tabs during the formation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure 2 It is a side schematic diagram of the utility model.

[0023] Figure 3It is an enlarged schematic diagram of the end portion of the present invention.

[0024] The description of the accompanying drawings is as follows:

[0025] 1-first layer;

[0026] 2-PCB fixing plate;

[0027] 3- Second layer board;

[0028] 4-briquetting;

[0029] 51-first motor; 52-first screw rod;

[0030] 61-second motor; 62-second screw rod;

[0031] 7-Mounting frame;

[0032] 8-battery cells;

[0033] 9-PCB board. DETAILED DESCRIPTION

[0034] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0035] Furthermore, the terms “first,” “second,” etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

[0036] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0037] The present invention will be further described in detail below with reference to the accompanying drawings, but the accompanying drawings are not intended to limit the present invention.

[0038] Implementation Method 1

[0039] The tabs of soft-pack batteries produced with existing formation equipment leave a noticeable indentation, causing problems with subsequent soldering. This is primarily due to the inability to adjust the height of the PCB, which causes a mismatch between the cell thickness and the PCB height, leading to an indentation on the tabs.

[0040] The present invention optimizes the fixture structure within a formation device, comprising a first layer plate 1 and a PCB fixing plate 2, located on the same side; a second layer plate 3, disposed on a side opposite the first layer plate 1; and a pressure block 4, disposed on a side opposite the PCB fixing plate 2. The second layer plate 3 is fixed to the output end of a first drive mechanism, which is used to drive the second layer plate 3 to compress the battery cell 8. The pressure block 4 and the PCB fixing plate 2 are fixed to the output end of a second drive mechanism, which is used to adjust the positions of the pressure block 4 and the PCB fixing plate 2. The present invention separates the first layer plate 1 and the PCB fixing plate 2, and drives the PCB fixing plate 2 to move back and forth via the second drive mechanism, so that the front-to-back position of the PCB board 9 of the battery cell can be adjusted to match the thickness of the battery cell 8, thereby helping to resolve the problem of indentations on the battery cell tabs during the formation process. Furthermore, the second drive mechanism can adjust the positions of the pressure block 4 and the PCB fixing plate 2, i.e., adjust the pressure applied by the pressure block 4 to the PCB board 9, thereby helping to resolve the problem of indentations on the battery cell tabs during the formation process.

[0041] It should be noted that: the battery cells are installed on the side of the first layer 1 facing the second layer 3, and the PCB board 9 is installed on the side of the PCB fixing plate 2 facing the pressure block 4. The first driving mechanism drives the second layer 3 to move toward the first layer 1, and can clamp the battery cells 8 between the first layer 1 and the second layer 3 to prevent the battery cells from being displaced or shaken during the formation process. In some embodiments, the first driving mechanism can also drive the first layer 1 to move toward the second layer 3 to clamp the battery cells 8, which is not limited here.

[0042] Among them, the tabs of the battery cell are welded to the PCB board 9. In order to avoid the tabs of the battery cell from being indented during the formation process, it is necessary to adjust the relative position and pressure between the PCB board 9 and the pressure block 4. That is, by adjusting the position of the PCB fixing plate 2, the second drive mechanism drives the PCB fixing plate 2 and the pressure block 4 to move closer to each other, which can compress the tabs of the battery cell and prevent the tabs of the battery cell from being displaced or shaken during the formation process, causing the battery cell to short-circuit. At the same time, the second drive mechanism can adjust the position of the pressure block 4 and the PCB fixing plate 2, that is, adjust the pressure between the PCB board 9 and the pressure block 4, and avoid the situation where the pressure between the PCB board 9 and the pressure block 4 is too high, causing the tabs of the battery cell to be indented. In addition, the PCB fixing plate 2 and the layer plate adopt a separate structure, which is convenient for the thickness of the fixture structure to be disassembled and maintained.

[0043] In the clamp structure according to the present invention, the first driving mechanism includes a first motor 51 and a first screw rod 52. The first screw rod 52 is connected to the output end of the first motor 51 and is connected to the second layer plate 3. A reducer is provided between the first motor 51 and the first screw rod 52. The first motor 51 drives the reducer, and the reducer drives the first screw rod 52 to rotate. Specifically, the first motor 51 is a large motor, and the reducer drives the first screw rod 52. The first screw rod 52 performs rotational motion, converting the rotational motion into linear motion of the second layer plate 3, thereby driving the second layer plate 3 to move closer to the first layer plate 1, thereby clamping the battery cell 8. The bottom of the second layer plate 3 is threadedly connected to the first screw rod 52, so that the first screw rod 52 converts the rotational motion into linear motion of the second layer plate 3.

[0044] In the fixture structure according to the present invention, the second drive mechanism includes a second motor 61 and a second screw 62, the second screw 62 is connected to the output end of the second motor 61, and the second screw 62 is respectively connected to the pressure block 4 and the PCB fixing plate 2. Specifically, the second motor 61 adopts a small motor, and the second motor 61 drives the second screw 62 to rotate, converting the rotational motion of the second screw 62 into a linear motion of the pressure block 4 and the PCB fixing plate 2. The pressure block 4 and the PCB fixing plate 2 are close to each other, which can press the tabs of the battery cell. By adjusting the position of the PCB fixing plate 2, that is, adjusting the pressing position of the PCB board 9, the height of the PCB board 9 and the thickness of the battery cell 8 are kept consistent, thereby achieving the purpose of eliminating the tab indentation. Among them, the second screw 62 can adopt a positive and negative thread screw, and one side of the pressure block 4 and the PCB fixing plate 2 in the left and right directions is threadedly connected to the second screw 62, so that the first screw 52 converts the rotational motion into a linear motion of the pressure block 4 and the PCB fixing plate 2 approaching each other.

[0045] In the fixture structure according to the present invention, multiple second-layer plates 3 are arranged at intervals along the direction of the first screw rod 52, and each second-layer plate 3 is arranged opposite to the first-layer plate 1. Specifically, when the first motor 51 transmits the rotation of the first screw rod 52, multiple second-layer plates 3 can be simultaneously linked to move toward the first-layer plate 1, so that multiple battery cells 8 can be clamped at the same time for formation, which helps to improve the overall working efficiency of the formation device. Among them, a second-layer plate 3 and a first-layer plate 1 form a group of battery cell clamping structures, and multiple second-layer plates 3 and multiple first-layer plates 1 can form multiple groups of battery cell clamping structures. By simultaneously linking multiple groups of battery cell clamping structures, it helps to improve the overall working efficiency of the formation device.

[0046] In the fixture structure according to the present invention, a plurality of pressing blocks 4 are arranged at intervals along the direction of the second screw 62, and each pressing block 4 is arranged opposite to the PCB fixing plate 2. Specifically, when the second motor 61 transmits the rotation of the second screw 62, the plurality of pressing blocks 4 and the PCB fixing plate 2 can be simultaneously linked to approach each other, and the tabs of the battery cell can be simultaneously pressed, which helps to improve the overall working efficiency of the formation device. Among them, one pressing block 4 and the PCB fixing plate 2 form a group of tab pressing structures, and multiple pressing blocks 4 and multiple PCB fixing plates 2 can form multiple groups of tab pressing structures. By simultaneously linking multiple groups of tab pressing structures, it helps to improve the overall working efficiency of the formation device.

[0047] The working principle of this utility model is:

[0048] The utility model separates the first layer board 1 and the PCB fixing board 2, and drives the PCB fixing board 2 to move back and forth through the second driving mechanism, so that the front and rear position of the PCB board 9 of the battery cell can be adjusted to match the thickness of the battery cell 8, which helps to solve the problem of indentation generated by the battery cell tabs during the formation process. At the same time, the second driving mechanism can adjust the position of the pressing block 4 and the PCB fixing board 2, that is, it can adjust the pressure applied by the pressing block 4 to the PCB board 9, which helps to solve the problem of indentation generated by the battery cell tabs during the formation process.

[0049] Implementation Method 2

[0050] Unlike the first embodiment, this embodiment has two PCB fixing plates 2 located on either side of the length of the first layer 1, and two pressing blocks 4 located on either side of the length of the second layer 3. Specifically, two battery cells 8 can be symmetrically placed on the side of the first layer 1 facing the second layer 3, with the two tabs of the battery cells 8 facing either side of the length. Furthermore, the two PCB fixing plates 2 and two pressing blocks 4 located on either side of the length of the second layer 3 simultaneously compress the tabs of both battery cells 8, helping to improve the space utilization of the fixture and thereby enhance the overall operating efficiency of the formation apparatus.

[0051] The other structures are the same as those in the first embodiment and will not be described again here.

[0052] Implementation Method 3

[0053] Unlike the first embodiment, this embodiment further includes a mounting frame 7, on which multiple first layer boards 1, PCB fixing plates 2, second layer boards 3, and pressure blocks 4 are mounted, facilitating installation of the fixture structure within the formation apparatus. Furthermore, multiple sets of fixture structures can be arranged side by side, increasing the number of cells 8 in the formation process and thereby improving the overall operating efficiency of the formation apparatus.

[0054] The other structures are the same as those in the first embodiment and will not be described again here.

[0055] Formation equipment

[0056] The formation device of the present invention includes the clamp structures of the first to third embodiments.

[0057] The formation device includes multiple fixture structures, a cell placement mechanism, a formation module, a material unloading mechanism, a code scanning mechanism, etc. The formation module uses electric current to form multiple initial cells to obtain multiple formed cells.

[0058] Based on the disclosure and teachings of the above description, those skilled in the art will be able to make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions, or modifications made by those skilled in the art based on the present invention fall within the scope of protection of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation on the present invention.

Claims

1. A clamp structure, characterized in that: include: The first layer board (1) and the PCB fixing board (2) are located on the same side; A second layer board (3) is arranged on a side opposite to the first layer board (1); A pressing block (4) is arranged on a side opposite to the PCB fixing plate (2); The second layer plate (3) is fixed to the output end of the first driving mechanism, the first driving mechanism is used to drive the second layer plate (3) to press the battery core, the pressing block (4) and the PCB fixing plate (2) are fixed to the output end of the second driving mechanism, and the second driving mechanism is used to adjust the positions of the pressing block (4) and the PCB fixing plate (2).

2. A clamp structure according to claim 1, characterized in that: The first driving mechanism comprises a first motor (51) and a first screw rod (52), wherein the first screw rod (52) is connected to the output end of the first motor (51), and the first screw rod (52) is connected to the second layer plate (3).

3. A clamp structure according to claim 2, characterized in that: A reducer is provided between the first motor (51) and the first screw rod (52); the first motor (51) drives the reducer, and the reducer drives the first screw rod (52) to rotate.

4. A clamp structure according to claim 2, characterized in that: The second driving mechanism comprises a second motor (61) and a second screw rod (62), wherein the second screw rod (62) is connected to the output end of the second motor (61), and the second screw rod (62) is respectively connected to the pressing block (4) and the PCB fixing plate (2).

5. A clamp structure according to claim 2, characterized in that: A plurality of the second layer plates (3) are arranged at intervals along the direction of the first screw rod (52), and each of the second layer plates (3) is arranged opposite to the first layer plate (1).

6. A clamp structure according to claim 4, characterized in that: A plurality of the pressing blocks (4) are arranged at intervals along the direction of the second screw rod (62), and each of the pressing blocks (4) is arranged opposite to the PCB fixing plate (2).

7. A clamp structure according to any one of claims 1 to 4, characterized in that: The first layer board (1) is provided with a battery cell mounted on a side facing the second layer board (3), and the PCB fixing plate (2) is provided with a PCB mounted on a side facing the pressing block (4). The first driving mechanism drives the second layer board (3) to move toward the first layer board (1), and the second driving mechanism drives the PCB fixing plate (2) and the pressing block (4) to move closer to each other.

8. A clamp structure according to any one of claims 1 to 4, characterized in that: The two PCB fixing plates (2) are located on both sides of the length direction of the first layer board (1), and the two pressing blocks (4) are located on both sides of the length direction of the second layer board (3).

9. A clamp structure according to any one of claims 1 to 4, characterized in that: It also includes a mounting frame (7), and a plurality of the first layer boards (1), the PCB fixing plates (2), the second layer boards (3) and the pressing blocks (4) are all mounted on the mounting frame (7).

10. A chemical formation device, characterized in that: The clamp structure comprises the clamp structure according to any one of claims 1 to 9.

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