Welding and fixing device for explosion-proof valve of battery cell shell

Abstract

The utility model relates to the technical field of welding tools, in particular to a battery cell shell explosion-proof valve welding fixing device which comprises a bottom plate, a connecting seat is fixedly connected to the upper end face of the bottom plate, a clamping seat is fixedly connected to one side of the upper end face of the connecting seat, and a pressing assembly is arranged in the middle of the other side of the upper end face of the connecting seat. The pressing assembly comprises a rotating seat, a second air cylinder is fixedly connected to the upper end face of the rotating seat, a pressing plate is fixedly connected to the upper end of the second air cylinder, a sleeve rod is fixedly connected to the lower side of one end of the pressing plate, and the lower end of the sleeve rod is slidably connected with an upper pressing head in a sleeving mode; the jacking assembly comprises a third air cylinder, and the upper end of the third air cylinder is fixedly connected with a jacking rod. According to the anti-explosion valve welding device, the anti-explosion valve can be stably clamped through the upper pressing head and the lower pressing head, the anti-explosion valve can be effectively prevented from deviating, and it is guaranteed that the welding position is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of welding tooling, in particular to a welding and fixing device for an explosion-proof valve of a battery cell housing. Background Art

[0002] The outer shell of a square shell battery consists of a semi-enclosed housing and a cover plate assembly used for sealing at the upper end. An explosion-proof valve needs to be welded on the battery housing. The explosion-proof valve can release excessive pressure in time to prevent the battery from exploding due to excessive pressure, ensuring the safety of personnel and equipment. Generally, the explosion-proof valve is laser-welded on the cover plate of the outer shell.

[0003] During welding, the cover plate equipped with the explosion-proof valve is placed in the corresponding tooling, and the tooling clamps the cover plate stably. However, there is a lack of a fixing structure for the explosion-proof valve body, so that the unfixed explosion-proof valve is prone to shift during welding, affecting the consistency and quality of the product. Therefore, those skilled in the art have provided a welding and fixing device for an explosion-proof valve of a battery cell housing to solve the problems raised in the above background art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a welding and fixing device for an explosion-proof valve of a battery cell housing, and solve the following technical problems:

[0005] How to fix the explosion-proof valve during the welding of the explosion-proof valve of the battery cell housing, prevent the explosion-proof valve from shifting, and improve the consistency and quality of the product.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A welding and fixing device for an explosion-proof valve of a battery cell housing includes a bottom plate. A connecting seat is fixedly connected to the upper end surface of the bottom plate. A clamping seat is fixedly connected to one side of the upper end surface of the connecting seat. A pressing component is arranged in the middle of the other side of the upper end surface of the connecting seat. A tightening component is arranged in the middle of the connecting seat.

[0008] The pressing component includes a rotating seat. A second cylinder is fixedly connected to the upper end surface of the rotating seat. The upper end of the second cylinder is fixedly connected to a pressing plate. A sleeve rod is fixedly connected to the lower side of one end of the pressing plate. An upper pressing head is slidably sleeved on the lower end of the sleeve rod.

[0009] The tightening component includes a third cylinder. A top rod is fixedly connected to the upper end of the third cylinder. The upper end of the top rod penetrates through the inside of the clamping seat and is fixedly connected to a lower top head.

[0010] Furthermore, the pressing component further includes a detection component and a motor. The motor is fixedly connected to the inside of the connecting seat. The output end of the motor is fixedly connected to the rotating seat.

[0011] Furthermore, the detection assembly includes a first sensor, a second sensor and a stopper, the stopper is fixedly connected to the upper end surface of the rotating base, and the angle between the first sensor and the second sensor is 90°;

[0012] Furthermore, a fixing seat is fixedly connected to the side of the upper end surface of the bottom plate away from the pressing assembly, the upper end of the fixing seat is fixedly connected to the first cylinder, the protruding end of the first cylinder is fixedly connected to the movable splint, and the side of the clamping base away from the movable splint is fixedly connected to the fixed splint;

[0013] Furthermore, a lifting assembly is provided on both sides of the interior of the connecting base, and the lifting assembly includes a fourth cylinder fixedly connected to the bottom plate, and the upper end of the fourth cylinder is fixedly connected to a lifting block, and the lifting block is slidably connected to the inner side of the card seat and can extend out of the upper end surface of the card seat;

[0014] Furthermore, the lower punch can extend out of the upper end surface of the holder, and the positions of the lower punch and the upper punch correspond to each other;

[0015] Furthermore, the outer end of the sleeve rod is sleeved with a spring;

[0016] Furthermore, grooves are provided on both sides of the upper end surface of the card seat;

[0017] Beneficial effects of the utility model:

[0018] The battery cell shell explosion-proof valve welding and fixing device proposed by the utility model is provided with a pressing component and a tightening component. When the device is in use, the battery cover plate equipped with the explosion-proof valve is placed in the holder, and the upper pressing head and the lower pressing head of the pressing component and the tightening component are aligned with the upper and lower sides of the explosion-proof valve respectively. Before welding, the explosion-proof valve can be clamped and stabilized by the upper pressing head and the lower pressing head, which can effectively prevent the explosion-proof valve from deflecting and ensure the accuracy of the welding position. At the same time, the upper pressing head can rotate without interfering with welding and the taking and placing of the cover plate, and the device is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is the overall structural diagram of the battery cell shell explosion-proof valve welding and fixing device proposed by the utility model;

[0021] Figure 2 This is a front view of the welding and fixing device for the explosion-proof valve of the battery shell proposed by the present invention;

[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4It is a cross-sectional view of the connecting plate of the welding fixing device for the explosion-proof valve of the battery shell proposed by the present invention.

[0024] Reference numerals:

[0025] 1. Base plate; 2. Connecting seat; 3. Clamping seat; 4. Pressing assembly; 41. Second cylinder; 42. Pressing plate; 43. Upper pressure head; 44. Sleeve rod; 45. Spring; 46. Rotating seat; 47. Motor; 48. Detection assembly; 481. First sensor; 482. Second sensor; 483. Stop block; 5. Tightening assembly; 51. Third cylinder; 52. Push rod; 53. Lower push head; 6. Fixed seat; 7. First cylinder; 8. Movable splint; 9. Lifting assembly; 91. Fourth cylinder; 92. Lifting block; 10. Groove; 11. Fixed splint. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Please see the attached Figures 1 to 4 As shown, the welding and fixing device for the explosion-proof valve of the battery shell in the embodiment of the present invention includes a base plate 1, the upper end surface of the base plate 1 is fixedly connected to a connecting seat 2, one side of the upper end surface of the connecting seat 2 is fixedly connected to a clamping seat 3, a down-pressing component 4 is provided at the middle of the other side of the upper end surface of the connecting seat 2, and a tightening component 5 is provided at the middle of the inner part of the connecting seat 2. The down-pressing component 4 is used to press the explosion-proof valve from top to bottom, and the tightening component 5 cooperates with the down-pressing component 4 to clamp the explosion-proof valve to ensure stability, and at the same time, it can also balance the forces on the upper and lower sides of the explosion-proof valve to prevent the explosion-proof valve from rupturing.

[0028] The lower pressure component 4 includes a rotating seat 46, the upper end surface of the rotating seat 46 is fixedly connected to the second cylinder 41, the upper end of the second cylinder 41 is fixedly connected to the pressure plate 42, the lower side of one end of the pressure plate 42 is fixedly connected to the sleeve rod 44, the lower end of the sleeve rod 44 is slidably sleeved with the upper pressure head 43, when the lower pressure component 4 is in use, the rotating seat 46 rotates so that the upper pressure head 43 is located above the explosion-proof valve, and then the second cylinder 41 retracts so that the upper pressure head 43 is pressed above the explosion-proof valve, and the upper pressure head 43 only contacts the upper inner side of the explosion-proof valve, does not cover the edge of the explosion-proof valve, and will not interfere with welding. In addition, the rotating seat 46 is set, so that the lower pressure component 4 can be rotated. After welding to the vicinity of the pressure plate 42, the rotating seat 46 is reset, so as not to interfere with the laser welding.

[0029] The pressing component 5 includes a third cylinder 51. The upper end of the third cylinder 51 is fixedly connected with a push rod 52. The upper end of the push rod 52 penetrates through the inside of the clamping seat 3 and is fixedly connected with a lower pressing head 53. When the pressing-down component 5 operates, the pressing component 4 operates simultaneously. The lower pressing head 53 is lifted by the third cylinder 51, so that the lower pressing head 53 contacts the lower side of the explosion-proof valve. The upper pressing head 4 and the lower pressing head 53 contact the explosion-proof valve simultaneously, ensuring uniform force and preventing the explosion-proof valve from cracking.

[0030] The pressing-down component 4 further includes a detection component 48 and a motor 47. The motor 47 is fixedly connected inside the connecting seat 2. The output end of the motor 47 is fixedly connected with the rotating seat 46. The rotating seat 46 is driven to rotate by the arranged motor 47.

[0031] The detection component 48 includes a first sensor 481, a second sensor 482 and a stop block 483. The stop block 483 is fixedly connected to the upper end face of the rotating seat 46. The included angle between the first sensor 481 and the second sensor 482 is 90°. The arranged first sensor 481 and second sensor 482 are both contact sensors. After the rotating seat 46 rotates 90°, the stop block 483 will trigger the corresponding sensor, thereby stopping the motor 47 and the rotating seat 46 stops rotating, preventing the rotating seat 46 from exceeding the limit.

[0032] On the upper end face of the bottom plate 1, on the side far from the pressing-down component 4, a fixed seat 6 is fixedly connected. On the upper end of the fixed seat 6, a first cylinder 7 is fixedly connected. The extending end of the first cylinder 7 is fixedly connected with a movable clamping plate 8. On the side of the clamping seat 3 far from the movable clamping plate 8, a fixed clamping plate 11 is fixedly connected. After the cover plate is placed in the clamping seat 3, the first cylinder 7 can be controlled to extend, driving the movable clamping plate 8 to move, so that the cover plate is stably clamped between the movable clamping plate 8 and the fixed clamping plate 11.

[0033] On both sides inside the connecting seat 2, a jacking component 9 is arranged. The jacking component 9 includes a fourth cylinder 91 fixedly connected to the bottom plate 1. The upper end of the fourth cylinder 91 is fixedly connected with a jacking block 92. The jacking block 92 is slidably connected to the inside of the clamping seat 3 and can extend out of the upper end face of the clamping seat 3. The arranged jacking component 9 is used to jack out the welded cover plate from the clamping seat. Specifically, the fourth cylinder 91 drives the jacking block 92 to extend, thereby jacking up the cover plate. The fourth cylinder 91 resets, and the jacking block 92 retracts into the clamping seat 3, facilitating the placement of the cover plate.

[0034] The lower pressing head 53 can extend out of the upper end face of the clamping seat 3, and the positions of the lower pressing head 53 and the upper pressing head 43 correspond.

[0035] A spring 45 is sleeved on the outer end of the sleeve rod 44. The arranged spring 45 can play a buffering role.

[0036] On both sides of the upper end face of the clamping seat 3, grooves 10 are provided. The provided grooves 10 facilitate the taking and placing of the cover plate.

[0037] The above has described in detail an embodiment of the present utility model. However, the above content is only a preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. Any equivalent changes and improvements made within the scope of the application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. An explosion-proof valve welding and fixing device for a battery cell housing, comprising a bottom plate (1), characterized in that: A connecting seat (2) is fixedly connected to the upper end surface of the bottom plate (1). A clamping seat (3) is fixedly connected to one side of the upper end surface of the connecting seat (2). A pressing-down assembly (4) is arranged in the middle of the other side of the upper end surface of the connecting seat (2). A pressing component (5) is arranged in the middle of the inside of the connecting seat (2). The pressing-down assembly (4) includes a rotating seat (46). A second cylinder (41) is fixedly connected to the upper end surface of the rotating seat (46). A pressing plate (42) is fixedly connected to the upper end of the second cylinder (41). A sleeve rod (44) is fixedly connected to the lower side of one end of the pressing plate (42). An upper pressing head (43) is slidably sleeved on the lower end of the sleeve rod (44). The pressing component (5) includes a third cylinder (51). A top rod (52) is fixedly connected to the upper end of the third cylinder (51). The upper end of the top rod (52) penetrates through the inside of the clamping seat (3) and is fixedly connected to a lower top head (53).

2. The explosion-proof valve welding and fixing device for the battery cell housing according to claim 1, wherein: The pressing-down assembly (4) further includes a detection component (48) and a motor (47). The motor (47) is fixedly connected to the inside of the connecting seat (2). The output end of the motor (47) is fixedly connected to the rotating seat (46).

3. The explosion-proof valve welding and fixing device for the battery cell housing according to claim 2, wherein: The detection component (48) includes a first sensor (481), a second sensor (482) and a stop block (483). The stop block (483) is fixedly connected to the upper end surface of the rotating seat (46). The included angle between the first sensor (481) and the second sensor (482) is 90°.

4. The explosion-proof valve welding and fixing device for the battery cell housing according to claim 1, wherein: A fixed seat (6) is fixedly connected to the side of the upper end surface of the bottom plate (1) far from the pressing-down assembly (4). A first cylinder (7) is fixedly connected to the upper end of the fixed seat (6). An active clamping plate (8) is fixedly connected to the extending end of the first cylinder (7). A fixed clamping plate (11) is fixedly connected to the side of the clamping seat (3) far from the active clamping plate (8).

5. The explosion-proof valve welding and fixing device for the battery cell housing according to claim 1, wherein: Lifting assemblies (9) are arranged on both sides inside the connecting seat (2). The lifting assembly (9) includes a fourth cylinder (91) fixedly connected to the bottom plate (1). A lifting block (92) is fixedly connected to the upper end of the fourth cylinder (91). The lifting block (92) is slidably connected to the inside of the clamping seat (3) and can extend out of the upper end surface of the clamping seat (3).

6. The explosion-proof valve welding and fixing device for the battery cell housing according to claim 1, characterized in that: The lower top head (53) can extend out of the upper end surface of the clamping seat (3). The positions of the lower top head (53) and the upper pressing head (43) correspond to each other.

7. The explosion-proof valve welding and fixing device for the battery cell housing according to claim 1, characterized in that: A spring (45) is sleeved on the outer end of the sleeve rod (44).

8. The explosion-proof valve welding and fixing device for the battery cell housing according to claim 1, wherein: Grooves (10) are formed on both sides of the upper end surface of the clamping seat (3).

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