Battery module side seam welding and side pressing device, equipment and method

Abstract

The invention relates to a side seam welding and side pressing device, equipment and method for a battery module. The device comprises a base and limiting assemblies, wherein the limiting assemblies are arranged on the top of the base and are installed on the two faces of the base respectively; the jacking mechanism comprises a connecting plate, a first execution piece arranged in the first direction, a connecting block connected with the acting end of the first execution piece and installed on the connecting plate, a second execution piece arranged in the second direction, an adapter piece connected with the acting end of the second execution piece, and a sliding plate fixedly connected with the adapter piece and slidably connected with the connecting plate. The first direction is perpendicular to the second direction; the adsorption mechanism is connected with the connecting block of the jacking mechanism; a stop block is arranged on one side, close to the jacking mechanism, of the adsorption mechanism; the adsorption mechanism is used for adsorbing the side plate and mounting the side plate on the side surface of the battery module; wherein the first execution piece and the second execution piece are matched with each other, and the limiting assembly makes contact with the sliding plate or the check block. According to the invention, the first execution member is adjusted according to the position of the battery module, and three heights can be switched.

Description

Technical Field

[0001] This invention relates to the field of battery production equipment technology, and in particular to a battery module side seam welding and pressing device, equipment and method. Background Technology

[0002] Side seam welding of battery modules (especially square battery modules) is a key process in power battery manufacturing, which directly affects the structural strength and safety of the module.

[0003] In the existing technology, side seam welding requires the completion of cell stacking, end plate / side plate clamping and welding at multiple stations, which has the problem of poor pre-compression effect. Specifically, the existing device uses only a single-stage lifting cylinder to press the battery module to the clamping mechanism before welding. The traditional single-stage cylinder clamping force is unstable, the side plate and end plate are not tightly attached, and the weld seam is prone to displacement due to vibration or thermal deformation during welding. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention discloses a battery module side seam welding side pressing device, equipment, and method.

[0005] The technical solution adopted in this invention is as follows: In a first aspect, a side seam welding and pressing device for a battery module is provided, comprising: A base, on which limiting components are mounted on both sides respectively; At least one lifting mechanism includes a connecting plate, a first actuator arranged along a first direction, a connecting block connected to the working end of the first actuator and mounted on the connecting plate, a second actuator arranged along a second direction and a connecting member connected to the working end of the second actuator, and a sliding plate fixedly connected to the connecting member and slidably connected to the connecting plate; the first direction and the second direction are perpendicular to each other; At least one adsorption mechanism is connected to the connecting block of the lifting mechanism; a stop block is provided on the side of the adsorption mechanism near the lifting mechanism; the adsorption mechanism is used to adsorb the side plate and install the side plate on the side of the battery module. In this configuration, the working ends of both the first and second actuators extend outwards, and the limiting component on one side of the base contacts the stop block; the working end of the second actuator retracts, the working end of the first actuator extends outwards, and the limiting component on the other side of the base contacts the slide plate.

[0006] In one embodiment of the present invention, the limiting component includes a support and a limiting member mounted on the support, the end of the limiting member facing the lifting mechanism.

[0007] In one embodiment of the present invention, a sliding assembly is provided between the connecting plate and the sliding plate; the sliding assembly includes a guide rail fixed to the connecting plate along a second direction and a slider sliding along the guide rail; the sliding plate and the slider are fixedly connected.

[0008] In one embodiment of the present invention, the adsorption mechanism includes a connecting seat fixedly connected to the connecting block, an adsorption plate connected to the connecting seat, at least one first power source installed on the connecting seat, and a suction cup connected to the working end of the first power source and capable of passing through the adsorption plate; the stop block is fixed to the side of the adsorption plate facing the base.

[0009] In one embodiment of the present invention, the adsorption mechanism further includes a second power source installed on the connecting seat and a movable plate connected to the second power source; the movable plate is disposed at the bottom of the adsorption plate.

[0010] In one embodiment of the present invention, a drive panel is further included; the base is fixed to the drive panel.

[0011] Secondly, a battery module side seam welding and pressing device is provided, comprising: At least one main actuator is disposed along a first direction; A lifting frame carries a tray; the actuating end of the main actuator is connected to the lifting frame; the tray is used to load battery modules. Two battery module side seam welding and side pressing devices as described above are respectively located on both sides of the lifting frame; The driving source is positioned along the second direction, and its output end is connected to a side seam welding pressure device of the battery module.

[0012] In one embodiment of the present invention, a frame is further included; the frame supports the battery module side seam welding side pressure device and the drive source; the lifting frame and the frame are movably connected.

[0013] In one embodiment of the present invention, the frame is provided with a rack along a first direction, and the lifting frame is provided with at least one gear, the gear and the rack meshing for transmission.

[0014] In one embodiment of the present invention, the drive source includes a servo motor, a reducer, a lead screw, and a nut; the output end of the servo motor is connected to the input end of the reducer; the output end of the reducer is connected to the lead screw; the lead screw and the nut are threadedly connected; and the nut is fixedly connected to the battery module side seam welding side pressure device.

[0015] Thirdly, a method for side seam welding and pressing of a battery module is provided, utilizing the battery module side seam welding and pressing equipment as described above, including the following steps: The lifting frame carries a tray containing battery modules. The main actuator lifts the lifting frame so that the tray is located between two battery module side seam welding side pressure devices. The side plate is picked up by the side seam welding and pressing device of the battery module. After adjustment by the side seam welding and pressing device, the side plate is centered, installed on the side of the battery module and pressed tightly for welding.

[0016] The technical solution of the present invention has the following advantages compared with the prior art: The battery module side seam welding and pressing equipment of this invention provides an integrated, high-precision side seam welding and pressing mechanism, thereby optimizing the accuracy and stability of the laser welding process and improving production efficiency and welding quality. Specifically, this mechanism can: 1. Improve positioning accuracy: Eliminate multi-station flow errors through integrated tooling design.

[0017] 2. Optimize pre-compression effect: A two-stage cylinder, namely the first actuator and the second actuator, works together to compress and dynamically adjust the pre-compression.

[0018] 3. Improve welding quality: A stable welding process and precise control help improve the appearance and internal quality of the weld, thereby enhancing the overall reliability of the product. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a first-view structural schematic diagram of the battery module side seam welding and side pressing device in this invention.

[0021] Figure 2 This is a second-view structural schematic diagram of the battery module side seam welding and side pressing device in this invention.

[0022] Figure 3 This is a schematic diagram of the initial state structure of the first actuator in the side seam welding and side pressing device of the battery module in this invention.

[0023] Figure 4 This is a schematic diagram of the first working state of the first and second actuators in the side seam welding and side pressing device of the battery module in this invention.

[0024] Figure 5 This is a schematic diagram of the second working state of the first and second actuators in the side seam welding and side pressing device of the battery module in this invention.

[0025] Figure 6 This is a first-view structural schematic diagram of the battery module side seam welding and pressing device (tray not shown) in this invention.

[0026] Figure 7 This is a top view of the battery module side seam welding and pressing device (tray not shown) in this invention.

[0027] Figure 8 This is a second-view structural schematic diagram of the battery module side seam welding and pressing device (tray not shown) in this invention.

[0028] Figure 9 This is a third-view structural schematic diagram of the battery module side seam welding and pressing device (tray not shown) in this invention.

[0029] Figure 10 This is a schematic diagram of the structure of the tray-loaded battery module and side plate in this invention.

[0030] Explanation of reference numerals in the instruction manual: 10. Main executable; 20. Battery module side seam welding and side pressing device; 201. Drive panel; 202. Base; 203. First actuator; 204. Second actuator; 205. Adapter; 206. Connecting plate; 207. Slide plate; 208. Connecting block; 209. First support; 210. First limiting member; 211. Connecting seat; 212. Second support; 213. Second limiting member; 214. Stop; 215. First power source; 216. Suction cup; 217. Second power source; 218. Movable plate; 30. Drive source; 31. Servo motor; 32. Lead screw; 33. Nut; 40. Lifting frame; 41. Movable frame; 42. Gear; 43. Rack; 44. Connecting rod; 50. Battery module; 51. Battery cell; 52. End plate; 53. Side plate; 60. Tray; 61. Base; 62. Support frame; 63. Limit seat; 64. Limit plate; 65. Sliding module; 66. Positioning pin; 70. Rack. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0032] The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present invention. Furthermore, in all embodiments, the same reference numerals denote the same elements. Example 1

[0033] Combination Figure 1 and Figure 2 A side seam welding and side pressing device for a battery module includes a drive panel 201, a base 202, at least one lifting mechanism and at least one adsorption mechanism.

[0034] In this embodiment, the side seam welding and pressing device for the battery module includes two lifting mechanisms and two adsorption mechanisms. One adsorption mechanism is mounted on one lifting mechanism.

[0035] The base 202 is fixed to the drive panel 201.

[0036] The base 202 has limiting components mounted on its top and on both sides. For clarity, the two limiting components are defined as the first limiting component and the second limiting component. Specifically, the first limiting component includes a first support 209 fixed to the back of the base 202 and a first limiting member 210 mounted on the first support 209. The second limiting component includes a second support 212 fixed to the front of the base 202 and a second limiting member 213 mounted on the second support 212. The first limiting member 210 and the second limiting member 213 can be bolts, with the bolt heads facing the lifting mechanism.

[0037] The lifting mechanism includes a connecting plate 206, a first actuator 203 arranged along a first direction, a connecting block 208 connected to the working end of the first actuator 203 and mounted on the connecting plate 206, a second actuator 204 arranged along a second direction, a transition piece 205 connected to the working end of the second actuator 204, and a sliding plate 207 fixedly connected to the transition piece 205 and slidably connected to the connecting plate 206. The first and second directions are perpendicular to each other. The transition piece 205 functions to change the direction of the force applied by the second actuator 204 within a limited space. The first actuator 203 and the second actuator 204 can be commercially available cylinders, which can be selected and adjusted by those skilled in the art as needed.

[0038] Furthermore, a sliding assembly is provided between the connecting plate 206 and the sliding plate 207, which assists the sliding plate 207 in moving in the second direction. The sliding assembly includes a guide rail fixed to the connecting plate 206 in the second direction and a slider that slides along the guide rail. The sliding plate 207 and the slider are fixedly connected.

[0039] It should be noted that, in order to describe the relationship between the various parts and components in this embodiment, a local coordinate system is established, with the length direction of the drive panel 201 as the X-axis direction, the width direction of the drive panel 201 as the Y-axis direction, and the height direction of the drive panel 201 as the Z-axis direction. The first direction refers to the Z-axis direction, and the second direction refers to the Y-axis direction.

[0040] The adsorption mechanism and the lifting mechanism are connected by a connecting block 208. A stop block 214 is provided on the side of the adsorption mechanism near the lifting mechanism. The adsorption mechanism is used to adsorb the side plate 53 and install the side plate 53 on the side of the battery module 50. Specifically, the adsorption mechanism includes a connecting seat 211 fixedly connected to the connecting block 208, an adsorption plate connected to the connecting seat 211, at least one first power source 215 installed on the connecting seat 211, and a suction cup 216 connected to the working end of the first power source 215 and capable of passing through the adsorption plate. The stop block 214 is fixed to the side of the adsorption plate facing the base 202. In this embodiment, the adsorption mechanism includes two first power sources 215. It can be understood that the battery module side seam welding side pressing device adsorbs and moves a side plate 53 using two suction cups 216. Using two suction cups 216 can better balance the load and prevent the side plate 53 from tilting or shifting during the adsorption process, which is crucial for the side plate 53 that requires precise positioning and stable handling. The first power source 215 and the second power source 217 can be commercially available cylinders, which can be selected and adjusted by those skilled in the art as needed.

[0041] Furthermore, to prevent the surface of the side plate 53 from directly contacting the hard adsorption plate and to avoid scratches, wear or other surface damage, a buffer pad is provided on the side of the adsorption plate facing the side plate 53.

[0042] Furthermore, the adsorption mechanism also includes a second power source 217 installed on the connecting seat 211 and a movable plate 218 connected to the second power source 217. The movable plate 218 is located at the bottom of the adsorption plate.

[0043] The working principle of this embodiment is as follows: like Figure 3 As shown, the first actuator 203 is in the initial position.

[0044] like Figure 4 As shown, after the tray 60 lifts and positions the battery module 50, the side seam welding and pressing devices on both sides of the battery module need to shape and position the battery module 50 to ensure the flatness of the side plate 53. At this time, the side seam welding and pressing devices need to avoid the side plate 53, so the height is higher. Specifically, the working ends of the first actuator 203 and the second actuator 204 both extend out, and the second limiting member 213 and the stop block 214 are in contact.

[0045] like Figure 5 As shown, when the side plate 53 is picked up by the side seam welding side pressure device of the battery module on both sides, it drives the side plate 53 to be installed on both sides of the battery module 50 for bonding before welding. Specifically, the working end of the second actuator 204 retracts, the working end of the first actuator 203 extends, and the first limiting member 210 contacts the sliding plate 207. Example 2

[0046] Based on Embodiment 1, combined with Figures 6 to 9 A battery module side seam welding and pressing device includes a frame 70, at least one main actuator 10, a lifting frame 40, two battery module side seam welding and pressing devices provided in Embodiment 1, and a drive source 30.

[0047] The frame 70 supports the battery module side seam welding pressure device 20 and the drive source 30. The lifting frame 40 is movably connected to the frame 70. Specifically, the frame 70 is provided with a rack 43 along the first direction, and the lifting frame 40 is provided with at least one gear 42. The gear 42 and the rack 43 mesh and drive each other, which can ensure the accuracy and repeatability of the movement of the lifting frame 40.

[0048] The main actuator 10 is arranged along the first direction, that is, the main actuator 10 drives the lifting frame 40 to rise or fall. The main actuator 10 can be a commercially available cylinder, which can be selected and adjusted by those skilled in the art as needed.

[0049] The lifting frame 40 carries the tray 60. The actuating end of the main actuator 10 is connected to the lifting frame 40. The tray 60 holds the battery module 50. Specifically, as... Figure 10 As shown, the assembled battery module 50 includes multiple battery cells 51, end plates 52 at both ends of the battery module 50, and side plates 53 on both sides of the battery module 50. The end plates 52 are provided with positioning holes. The tray 60 includes a base 61, a support frame 62 mounted on the base 61, two limiting seats 63 fixed to the base 61, four limiting plates 64 movably connected to the base 61, and four positioning pins 66 fixed to the support frame 62. A sliding module 53 is provided between the limiting plates 64 and the base 61, which can adjust the position of the limiting plates 64 on the base 61 according to the length of the side plates 53. The sliding module 53 includes a guide rail arranged along the X-axis and a slider that slides along the guide rail. The slider and the limiting plate 64 are fixedly connected. It should be noted that the tray 60 also includes a locking module, which includes a locking rail on one side of the guide rail and a locking member on one side of the limiting plate 64. The locking track has multiple locking holes, and locking components such as bolts can be inserted into the locking holes to fix the position of the limiting plate 64 on the base 61.

[0050] The limiting seat 63 and the limiting plate 64 are used to place the side plate 53. Subsequently, the side plate 53 is installed on both sides of the battery module 50 using the battery module side seam welding side pressing device 20. The positioning pin 66 is used to insert into the positioning hole of the end plate 52 to fix the position of the battery module 50 with the end plate 52, which facilitates the subsequent assembly of the side plate 53.

[0051] The two battery module side seam welding side pressure devices 20 are respectively located on both sides of the lifting frame 40.

[0052] The drive source 30 is positioned along a second direction. The output end of the drive source 30 is connected to a battery module side seam welding and pressing device 20. Specifically, the drive source 30 includes a servo motor 31, a reducer, a lead screw 32, and a nut 33. The output end of the servo motor 31 is connected to the input end of the reducer. The output end of the reducer is connected to the lead screw 32. The lead screw 32 and the nut 33 are threadedly connected. The nut 33 is fixedly connected to the drive panel 201 of the battery module side seam welding and pressing device 20. The drive source 30 can drive the battery module side seam welding and pressing device 20 to move along the second direction, that is, drive the battery module side seam welding and pressing device 20 to move closer to or further away from the tray 60 containing the battery module 50.

[0053] The working principle of this embodiment is as follows: The lifting frame 40 carries the tray 60 containing the battery module 50. The main actuator 10 lifts the lifting frame 40 so that the tray 60 is located between the two battery module side seam welding side pressure devices 20.

[0054] The driving source 30 drives the battery module side seam welding side pressing device 20 to retract to the position of taking the side plate 53. The adsorption plate descends to the height of taking the side plate 53, the suction cup 216 extends, the movable base plate 218 extends, the slide plate 207 retracts, the adsorption plate approaches the side plate 53, the suction cup 216 picks up the side plate 53, and the adsorption plate drives the side plate 53 to rise to the pressing position of the battery module 50.

[0055] The drive source 30 drives the battery module side seam welding side pressing device 20 forward, installs the side plate 53 on the side of the battery module 50 and presses it tightly for welding.

[0056] These improvements are not only applicable to welding side plates, but can also be widely applied to other laser welding scenarios to improve the overall efficiency and product quality of the manufacturing industry.

[0057] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0058] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A side seam welding and pressing device for a battery module, characterized in that, include: A base (202) has limiting components installed on its top and respectively on both sides of the base (202); At least one lifting mechanism includes a connecting plate (206), a first actuator (203) arranged along a first direction, a connecting block (208) connected to the working end of the first actuator (203) and mounted on the connecting plate (206), a second actuator (204) arranged along a second direction, a transition piece (205) connected to the working end of the second actuator (204), and a sliding plate (207) fixedly connected to the transition piece (205) and slidably connected to the connecting plate (206); the first direction and the second direction are perpendicular to each other; At least one adsorption mechanism is connected to the connecting block (208) of the lifting mechanism; a stop block (214) is provided on the side of the adsorption mechanism near the lifting mechanism; the adsorption mechanism is used to adsorb the side plate (53) and install the side plate (53) on the side of the battery module (50); In this configuration, the working ends of the first actuator (203) and the second actuator (204) extend outwards, and the limiting component on one side of the base (202) contacts the stop (214); the working end of the second actuator (204) retracts, the working end of the first actuator (203) extends outwards, and the limiting component on the other side of the base (202) contacts the slide plate (207).

2. The battery module side seam welding and pressing device according to claim 1, characterized in that, The limiting assembly includes a support and a limiting member mounted on the support, with the end of the limiting member facing the lifting mechanism.

3. The battery module side seam welding and pressing device according to claim 1, characterized in that, A sliding assembly is provided between the connecting plate (206) and the sliding plate (207); the sliding assembly includes a guide rail fixed to the connecting plate (206) along a second direction and a slider that slides along the guide rail; the sliding plate (207) and the slider are fixedly connected.

4. The battery module side seam welding and pressing device according to claim 1, characterized in that, The adsorption mechanism includes a connecting seat (211) fixedly connected to the connecting block (208), an adsorption plate connected to the connecting seat (211), at least one first power source (215) installed on the connecting seat (211), and a suction cup (216) connected to the working end of the first power source (215) and passable through the adsorption plate; the stop block (214) is fixed to the side of the adsorption plate facing the base (202).

5. The battery module side seam welding and pressing device according to claim 1, characterized in that, The adsorption mechanism further includes a second power source (217) installed on the connecting seat (211) and a movable plate (218) connected to the second power source (217); the movable plate (218) is located at the bottom of the adsorption plate.

6. The battery module side seam welding and pressing device according to claim 1, characterized in that, It also includes a drive panel (201); the base (202) is fixed to the drive panel (201).

7. A side seam welding and pressing device for battery modules, characterized in that, include: At least one main actuator (10) is disposed along a first direction; Lifting frame (40), carrying tray (60); the working end of the main actuator (10) is connected to the lifting frame (40); the tray (60) is loaded with battery module (50). Two battery module side seam welding side pressing devices (20) as described in any one of claims 1-6 are respectively provided on both sides of the lifting frame (40); A drive source (30) is arranged along the second direction, and its output end is connected to a side seam welding pressure device (20) of the battery module.

8. The battery module side seam welding and pressing equipment according to claim 7, characterized in that, It also includes a frame (70); the frame (70) supports the battery module side seam welding side pressure device (20) and the drive source (30); the lifting frame (40) and the frame (70) are movably connected.

9. The battery module side seam welding and pressing equipment according to claim 8, characterized in that, The frame (70) is provided with a rack (43) along a first direction, and the lifting frame (40) is provided with at least one gear (42), the gear (42) and the rack (43) meshing and driving each other.

10. The battery module side seam welding and pressing equipment according to claim 7, characterized in that, The drive source (30) includes a servo motor (31), a reducer, a lead screw (32), and a nut (33); the output end of the servo motor (31) is connected to the input end of the reducer; the output end of the reducer is connected to the lead screw (32); the lead screw (32) and the nut (33) are threadedly connected; the nut (33) and the battery module side seam welding side pressure device (20) are fixedly connected.

11. A method for side seam welding and side pressing of a battery module, characterized in that, The battery module side seam welding and pressing equipment as described in any one of claims 7-10 includes the following steps: The lifting frame (40) carries the tray (60) containing the battery module (50), and the main actuator (10) lifts the lifting frame (40) so that the tray (60) is located between the two battery module side seam welding side pressure devices (20). The battery module side seam welding side pressing device (20) picks up the side plate (53), adjusts the side plate (53) to be centered, installs the side plate (53) on the side of the battery module (50) and presses it tightly for welding.

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