Pressing assembly device for a housing and a battery cell module

Abstract

The present application relates to a kind of compression assembly device for shell and battery module, shell has multiple through holes, each battery of the battery module covers a through hole, including cover plate, multiple elastic elements and locking mechanism, cover plate is used to cover the end surface of the battery module away from the through hole;Multiple elastic elements are arranged on the cover plate, after the cover plate covers the battery module, each elastic element is in contact with one battery;Locking mechanism is used to lock the cover plate on the shell or on the bottom plate located at the end of the shell away from battery module and in contact with the shell after the elastic element compresses the battery.The present application can compress each battery in battery module well, in turn, so that each battery compresses corresponding through hole, to prevent glue leakage from the through hole of shell in glue pouring process.

Description

Technical Field

[0001] This invention relates to the field of battery pack manufacturing, and more specifically to a clamping and assembly device for a housing and a cell module. Background Technology

[0002] In the battery pack production process, there is a potting process. Before potting, each cell of the cell module covers a through hole in the housing. The cell module is pressed onto the housing by a cover plate to seal the through hole. Then, potting is applied between the housing and the cell module.

[0003] Traditional pressing and assembly devices directly press the battery cell module with a cover plate. Due to differences in the height of each battery cell in the battery cell module, different degrees of wear on different parts of the cover plate, or deformation of the cover plate, some battery cells may be over-pressurized, while others may be under-pressurized. Over-pressurization may damage the battery cells, while insufficient battery cell pressure may cause glue to leak from the through holes during the subsequent glue-filling process.

[0004] Therefore, there is an urgent need to develop a pressing and assembly device for housings and battery cell modules that can prevent glue leakage during the potting process. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a pressing assembly device for a housing and a cell module. It can press each cell in the cell module well, thereby pressing each cell into the corresponding through hole to prevent glue leakage from the through hole of the housing during the glue filling process.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a pressing and assembling device for a housing and a battery cell module, wherein the housing has multiple through holes, and each battery cell of the battery cell module covers one through hole, comprising:

[0007] A cover plate for covering the end face of the battery cell module away from the through hole;

[0008] Multiple elastic elements are disposed on the cover plate, and after the cover plate is placed on the battery cell module, each elastic element abuts against one battery cell;

[0009] A locking mechanism is used to lock the cover plate onto the housing or onto a base plate located on the housing, away from the cell module end and abutting against the housing, after the elastic element has pressed the cell.

[0010] Furthermore, a specific structure for a locking mechanism that facilitates locking is provided, the locking mechanism comprising at least two locking components; wherein, the locking components include:

[0011] Connection components;

[0012] A hook is installed on the connecting assembly, and a corresponding mating body is provided with a slot that mates with the hook. The housing and the base plate are collectively referred to as the mating body.

[0013] At least one resilient pull rod, connecting the cover plate and the connecting assembly, is axially perpendicular to the height direction of the cell and is configured to extend and retract only along its axial direction, for applying an inward force to the connecting assembly when the connecting assembly extends outward beyond its initial position.

[0014] Furthermore, to make the entire device suitable for battery cell modules of different heights, the connection assembly includes:

[0015] The first connecting member is connected to the elastic tie rod;

[0016] The second connector slides with the first connector in the height direction of the battery cell, and the hook is installed on the second connector.

[0017] A positioning fixing component is used to lock and fix the second connector onto the first connector after the second connector has slid to a suitable position along the height direction of the battery cell.

[0018] Furthermore, to facilitate the opening of the locking assembly during the installation of the cover plate, the clamping assembly device for the housing and the cell module also includes a pushing mechanism, which includes:

[0019] A pusher corresponding to the locking component;

[0020] A power mechanism, connected to the pusher, is used to drive the pusher to move outward, so that the pusher pushes the connecting assembly to move outward.

[0021] Furthermore, the clamping assembly device for the housing and the battery cell module also includes a robotic arm, with the pushing mechanism disposed on the robotic arm.

[0022] Furthermore, the robotic arm includes:

[0023] A gripper assembly for gripping the cover plate;

[0024] A clamping assembly for clamping the cover plate toward the housing after the cover plate is placed on the cell module.

[0025] Furthermore, to facilitate positioning between the robotic arm and the cover plate, at least two robotic arm positioning components are configured between the robotic arm and the cover plate.

[0026] Furthermore, to facilitate the positioning between the cover plate and the housing, at least two cover plate positioning components are arranged between the cover plate and the housing.

[0027] By adopting the above technical solution, the present invention has the following beneficial effects:

[0028] 1. After the cover plate is placed on the end face of the battery cell module away from the through hole, each elastic element presses one battery cell as the cover plate moves toward the housing. After the cover plate moves down to the appropriate position, the position of the cover plate is locked by the locking mechanism. In this invention, each battery cell can be subjected to pressure, which can effectively seal the corresponding through hole and thus avoid glue leakage in the potting process.

[0029] 2. The locking mechanism of the present invention can be pushed and pulled outwards, and can automatically return to its original position after being released. It can also lock by the engagement of the hook and the slot, which is convenient and easy. The height of the connecting component of the locking mechanism is adjustable, so that the cover plate is suitable for battery cell modules of different heights and has strong versatility.

[0030] 3. This invention eliminates the hassle of manual handling, pressing down, and locking by using a robotic arm to grasp the cover plate, open the locking mechanism outwards, and press down the cover plate, thus improving work efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the cover plate of the present invention covering the battery cell module;

[0032] Figure 2 This is a schematic diagram of the structure of the housing of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the base plate of the present invention;

[0034] Figure 4 This is a schematic diagram of the cover plate and locking mechanism of the present invention;

[0035] Figure 5 This is a structural schematic diagram of the cover plate and locking mechanism of the present invention from another perspective;

[0036] Figure 6 This is a schematic diagram of the locking component of the present invention;

[0037] Figure 7 This is a schematic diagram of the pressing and assembling device for the housing and battery cell module of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of the robotic arm of the present invention;

[0039] In the picture,

[0040] 1. Housing; 11. Through hole; 2. Battery cell module; 3. Cover plate; 4. Locking assembly; 41. Connecting assembly; 411. First connecting piece; 412. Second connecting piece; 413. Position fixing piece; 42. Hook; 43. Elastic pull rod; 5. Pushing mechanism; 51. Pushing component; 52. Power mechanism; 6. Robotic arm; 61. Grip assembly; 62. Pressing assembly; 63. Vacuum suction cup; 64. Mounting part; 7. Base plate; 71. Slot; 8. Robotic arm positioning assembly; 9. Cover plate positioning assembly; 10. Elastic element. Detailed Implementation

[0041] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0042] like Figure 1 , 2 As shown in figures 3, 4, 5, 6, 7, and 8, a clamping assembly device for a housing and a battery cell module is provided. The housing 1 has multiple through holes 11, and each battery cell of the battery cell module 2 covers one through hole 11. The device includes:

[0043] Cover plate 3 is used to cover the end face of the battery cell module 2 that is away from the through hole 11;

[0044] Multiple elastic elements 10 are disposed on the cover plate 3. After the cover plate 3 covers the battery cell module 2, each elastic element 10 abuts against a battery cell.

[0045] A locking mechanism is used to lock the cover plate 3 onto the housing 1 or onto the bottom plate 7 located at the end of the housing 1 away from the battery cell module 2 and abutting against the housing 1 after the elastic element 10 presses the battery cell.

[0046] Specifically, after the cover plate 3 is placed on the end face of the cell module 2 away from the through hole 11, each elastic element presses a cell as the cover plate moves toward the housing. After the cover plate 3 moves to the appropriate position, the position of the cover plate 3 is locked by the locking mechanism. In this embodiment, each cell can be subjected to pressure, which can effectively seal the corresponding through hole 11, thereby avoiding glue leakage in the glue potting process.

[0047] The elastic element 10 can be a coil spring, gas spring, etc. The locking mechanism locks the cover plate 3 onto the base plate 7. This arrangement prevents the locking force of the locking mechanism from damaging the housing 1. To prevent misalignment between the base plate 7 and the housing 1, a housing positioning assembly is provided between the base plate 7 and the housing 1.

[0048] In one embodiment, to improve sealing, a sealing gasket is provided between each cell and the housing 1. The sealing gasket can be foam or the like.

[0049] In one embodiment, such as Figure 1 , 4 As shown in Figures 5, 6, and 7, the locking mechanism includes at least two locking components 4; wherein, the locking component 4 includes:

[0050] Connection component 41;

[0051] The hook 42 is installed on the connecting assembly 41, and the corresponding mating body is provided with a slot 71 that mates with the hook 42. The housing 1 and the base plate 7 are collectively referred to as the mating body.

[0052] At least one elastic pull rod 43, connecting the cover plate 3 and the connecting assembly 41, is axially perpendicular to the height direction of the cell and is configured to extend and retract only along its axial direction, for applying an inward force to the connecting assembly 41 when the connecting assembly 41 extends outward beyond its initial position.

[0053] In one embodiment, the locking component 4 has at least two opposing sets, each set having at least one.

[0054] Specifically, before covering the battery cell module 2 with the cover plate 3, the connecting component 41 is pushed or pulled outward so that the connecting component 41 extends beyond its initial position to avoid interfering with the covering plate 3 during installation and downward movement. During the outward movement of the connecting component 41, the elastic part of the elastic rod 43 undergoes elastic deformation. After the outward force of the connecting component 41 disappears, the elastic rod 43 drives the connecting component 41 to move inward through the rebound of its elastic part.

[0055] The elastic pull rod 43 may include, but is not limited to, a pull rod body and a spring. The pull rod body is slidably mounted on the cover plate 3 along its axial direction. The end of the pull rod body near the edge of the cover plate 3 is fixedly connected to the connecting assembly 41, and the end away from the edge of the cover plate 3 is fixed with an abutment block. The spring is sleeved on the pull rod body, with one end abutting against the fixed part on the cover plate 3 and the other end abutting against the abutment block.

[0056] In one embodiment, such as Figure 1 , 4 As shown in Figures 5, 6, and 7, the connecting component 41 includes:

[0057] The first connector 411 is connected to the elastic tie rod 43;

[0058] The second connector 412 is slidably engaged with the first connector 411 in the height direction of the battery cell, and the hook 42 is installed on the second connector 412.

[0059] Position fixing member 413 is used to lock and fix the second connector 412 onto the first connector 411 after the second connector 412 slides to a suitable position along the height direction of the battery cell.

[0060] Specifically, the position of the second connector 412 can be adjusted according to the height of the battery cell in the battery cell module 2. After adjustment, it can be locked and fixed by the position fixing component 413. With this configuration, the entire clamping and assembly device for the housing and battery cell module can be applied to battery cell modules 2 of various heights, making it highly versatile.

[0061] The positioning fastener 413 can be a bolt and nut assembly, etc. In this embodiment, the first connector 411 is provided with a sliding groove, and the second connector 412 is provided with a sliding rail. The second connector 412 is slidably fitted onto the first connector 411 through the cooperation of the sliding rail and the sliding groove.

[0062] In one embodiment, such as Figure 7 , 8 As shown, the clamping assembly device for the housing and the battery cell module further includes a pushing mechanism 5, which includes:

[0063] A pusher 51 corresponding to the locking component 4;

[0064] The power mechanism 52 is connected to the pusher 51 and is used to drive the pusher 51 to move outward so that the pusher 51 pushes the connecting assembly 41 to move outward.

[0065] Specifically, the setting of the pushing mechanism 5 facilitates the movement of the connecting component 41 and the hook 42 away from the cover plate 3, saving manpower.

[0066] In one embodiment, the power mechanism 52 may be a cylinder, hydraulic cylinder, electric cylinder, etc. The pusher 51 may be a push plate, push rod, or push block, etc., and the pusher contacts the inward side of the first connector 411 during at least a portion of its outward movement.

[0067] In one embodiment, such as Figure 7 , 8 As shown, the clamping assembly device for the housing and the battery cell module also includes a robot arm 6, and the pushing mechanism 5 is disposed on the robot arm 6.

[0068] Specifically, during the process of installing the cover plate 3, the cover plate 3 is transported by the robotic arm 6. The pushing mechanism 5 is integrated on the robotic arm 6, allowing the robotic arm 6 to push the connecting component 41 and the hook 42 on the connecting component outward during transport. In addition, configuring the pushing mechanism 5 on the robotic arm 6 eliminates the trouble of configuring the pushing mechanism 5 on each cover plate 3, greatly reducing the load on the cover plate 3 and saving equipment costs.

[0069] In one embodiment, such as Figure 7 , 8 As shown, the robotic arm 6 includes:

[0070] The gripper assembly 61 is used to grip the cover plate 3;

[0071] The clamping assembly 62 is used to clamp the cover plate 3 towards the housing 1 after the cover plate 3 is placed on the battery cell module 2.

[0072] The specific steps for pressing and assembling the housing 1 and the battery module 2 of the entire device are as follows:

[0073] The robotic arm 6 grasps the cover plate 3 through its gripper assembly 61 and pushes the mechanism 5 outward to open the connecting assembly 41 and the hook 42 of the locking mechanism 4;

[0074] After the robotic arm places the cover plate 3 on the battery cell module 2, the gripper assembly 61 releases the cover plate 3, and the robotic arm 6 presses the cover plate 3 toward the housing 1 through the pressing assembly 62.

[0075] After the hook 42 overlaps with the edge of the slot 71, the push mechanism 5 retracts, and the pressing component 62 continues to press the battery module 2 toward the housing 1 until the hook 42 moves to the position facing the slot 71. The hook 42 is then inserted into the slot 71 by the rebound of the elastic pull rod 43.

[0076] Thus, the clamping assembly of the housing 1 and the battery module 2 is completed, and the robotic arm 6 retracts. In this embodiment, the robotic arm 6 grasps the cover plate 3, opens the locking mechanism 4 outward, and presses down the cover plate 3, eliminating the trouble of manual handling, pressing down, and locking, and improving work efficiency.

[0077] To enhance the versatility of the robotic arm, the robotic arm 6 Shanghai is equipped with multiple vacuum suction cups 63.

[0078] To facilitate the assembly of the robotic arm 6 to the end of the robotic arm, the robotic arm 6 also has a mounting part 64.

[0079] In one embodiment, the gripper assembly 61 includes two opposing grippers and a moving drive connected to the two grippers to drive the two grippers to move towards or away from each other. The grippers have multiple gripping teeth, and the cover plate 3 is provided with tooth grooves corresponding to the gripping teeth. The moving drive can be a cylinder, hydraulic cylinder, electric cylinder, etc.

[0080] In one embodiment, the pressing assembly 62 includes multiple pressing blocks, and the robotic arm 6 presses down the cover plate 3 through the pressing blocks under the action of the robotic arm.

[0081] like Figure 7 As shown, at least two robot arm positioning components 8 are arranged between the robot arm 6 and the cover plate 3. This arrangement facilitates the positioning of the robot arm 6 and the cover plate 3.

[0082] In one embodiment, the robotic arm positioning assembly 8 includes a first positioning pin and a first positioning hole that cooperate with each other, one of which is located on the robotic arm 6 and the other is located on the cover plate 3.

[0083] like Figure 7 As shown, at least two cover plate positioning assemblies 9 are disposed between the cover plate 3 and the housing 1. This arrangement prevents the cover plate 3 from being misaligned. The cover plate positioning assembly 9 includes a second positioning pin and a second positioning hole that cooperate with each other. One of the second positioning pin and the second positioning hole is located on the cover plate 3, and the other is located on the housing 1.

[0084] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A clamping assembly device for a housing and a battery cell module, wherein the housing (1) has a plurality of through holes (11), and each battery cell of the battery cell module (2) covers one through hole (11), characterized in that, The clamping assembly device for housing and cell module includes: A cover plate (3) is used to cover the end face of the battery cell module (2) away from the through hole (11); Multiple elastic elements (10) are disposed on the cover plate (3). After the cover plate (3) covers the battery cell module (2), each elastic element (10) abuts against a battery cell. A locking mechanism is used to lock the cover plate (3) onto the housing (1) or onto the base plate (7) located at the end of the housing (1) away from the battery cell module (2) and abutting against the housing (1) after the elastic element (10) presses the battery cell.

2. The pressing and assembling device for the housing and the battery cell module according to claim 1, characterized in that, The locking mechanism includes at least two locking components (4); wherein the locking component (4) includes: Connection component (41); The hook (42) is installed on the connecting assembly (41), and the corresponding mating body is provided with a slot (71) that mates with the hook (42). The housing (1) and the base plate (7) are collectively referred to as the mating body. At least one elastic pull rod (43), connecting the cover plate (3) and the connecting assembly (41), is axially perpendicular to the height direction of the cell and is configured to extend and retract only along its axial direction, for applying an inward force to the connecting assembly (41) when the connecting assembly (41) is outward beyond its initial position.

3. The clamping and assembly device for the housing and the battery cell module according to claim 2, characterized in that, The connection component (41) includes: The first connector (411) is connected to the elastic tie rod (43); The second connector (412) slides in cooperation with the first connector (411) in the height direction of the battery cell, and the hook (42) is installed on the second connector (412); The position fixing member (413) is used to lock and fix the second connector (412) onto the first connector (411) after the second connector (412) slides to a suitable position along the height direction of the cell.

4. The pressing and assembling device for the housing and the battery cell module according to claim 2, characterized in that, It also includes a propulsion mechanism (5), which comprises: A pusher (51) corresponding to the locking component (4); A power mechanism (52) is connected to the pusher (51) for driving the pusher (51) to move outward so that the pusher (51) pushes the connecting assembly (41) to move outward.

5. The pressing and assembling device for the housing and the battery cell module according to claim 4, characterized in that, It also includes a robotic arm (6), on which the pushing mechanism (5) is disposed.

6. The clamping and assembly device for the housing and the battery cell module according to claim 5, characterized in that, The robotic arm (6) includes: Gripper assembly (61) for gripping the cover plate (3); A clamping assembly (62) is used to clamp the cover plate (3) toward the housing (1) after the cover plate (3) is placed on the cell module (2).

7. The clamping and assembly device for the housing and the battery cell module according to claim 6, characterized in that, At least two robot positioning components (8) are disposed between the robot (6) and the cover plate (3).

8. The clamping and assembly device for the housing and the battery cell module according to claim 1, characterized in that, At least two cover plate positioning assemblies (9) are disposed between the cover plate (3) and the housing (1).

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