Battery cell module welding device

Abstract

The battery cell module welding device comprises a welding mechanism and at least one set of processing part, the welding mechanism comprises a first driving part and a laser welding device, and the driving end of the first driving part is connected with the laser welding device; each set of processing part comprises a conveying mechanism and at least one set of pressing mechanism; the conveying mechanism is used for moving a battery cell module to be welded to a welding station or moving the battery cell module welded at the welding station out of the welding station; the pressing mechanism comprises a pressing assembly, a positioning assembly and a height measuring assembly, the pressing assembly presses the pole and the bus bar at the corresponding welding position before the welding mechanism welds, and the positioning assembly positions the pole; the height measuring assembly detects the height of the upper surface of the corresponding welding position; the first driving part drives the laser welding device to transversely move to the position over the welding position according to the positioning information of the positioning assembly and drives the laser welding device to descend by the preset height according to the height information, detected by the height measuring assembly, of the upper surface of each welding position so as to weld the pole columns and the bus bars at the welding positions.

Description

Technical Field

[0001] The present application belongs to the technical field of battery cell module production equipment, and in particular, relates to a battery cell module welding device. Background Art

[0002] During the processing of the battery cell module, the poles and busbars of the battery cell module need to be welded together by a welding device. One busbar usually connects the poles of at least two batteries at the same time. The existing welding device for welding battery cell modules usually includes a transfer mechanism and a laser welder. The transfer mechanism drives the laser welder to move to the top of the pole to be welded according to the position information of the pole of the battery cell module, and then descends to a certain height to weld the pole and busbar.

[0003] However, in the actual production process, the welding height of the existing laser welder is certain, but there may be a certain error in the upper surface height of each battery cell to be welded. This makes it impossible to ensure that the laser welder at all welding positions can be at the optimal welding height, and it is also impossible to guarantee the welding quality of each welding position. Utility Model Content

[0004] The purpose of the present application is to provide a battery cell module welding device to solve the problem that the existing battery cell module welding device cannot guarantee the welding quality of each welding position.

[0005] To achieve this goal, this application adopts the following technical solutions:

[0006] A battery cell module welding device comprises a welding mechanism and at least one set of processing parts, wherein:

[0007] The welding mechanism comprises a first driving member and a laser welder, wherein a driving end of the first driving member is connected to the laser welder, and the first driving member is configured to drive the laser welder to move laterally and to rise and fall;

[0008] Each set of processing parts includes a conveying mechanism and at least one set of pressing mechanisms, and the conveying mechanism is configured to move the battery cell module to be welded to the welding station or to move the battery cell module welded at the welding station out of the welding station;

[0009] The clamping mechanism includes a clamping assembly, a positioning assembly and a height measuring assembly. The clamping assembly is configured to clamp the pole and the busbar corresponding to the welding position before the welding mechanism welds. The positioning assembly is configured to position the pole corresponding to the welding position. The height measuring assembly is configured to detect the height of the upper surface of the corresponding welding position before the welding mechanism welds.

[0010] The first driving member is configured to drive the laser welder to move horizontally to directly above the welding position according to the positioning information of the positioning component. The first driving member is also configured to drive the laser welder to descend to a preset height according to the height information of the upper surface of each welding position detected by the height measuring component to weld the pole and bus bar at the welding position.

[0011] The battery cell module welding device proposed in the present application realizes the compression of the poles and busbars at the corresponding welding positions through the clamping component; realizes the positioning of the poles at the corresponding welding positions on the horizontal plane through the positioning component; realizes the detection of the height of the upper surface of the corresponding welding position before the welding of the welding structure through the height measuring component, calculates the descent height of the laser welder through the height of the upper surface of the welding position, drives the laser welder to descend to the optimal welding height through the first driving member, thereby ensuring that the laser welder is at the optimal welding height during welding at each welding position, so as to ensure the welding quality of each welding position.

[0012] Optionally, the clamping assembly includes a second driving member, a movable seat and n groups of clamping members, the driving end of the second driving member is connected to the movable seat, the second driving member is configured to drive the movable seat to move horizontally and vertically, each group of clamping members includes m first clamping blocks, the first clamping blocks are movably mounted on the movable seat through an elastic component, each first clamping block corresponds to a welding position of the battery cell module, each welding position is provided with a pole, the first clamping block is configured to clamp the pole and bus bar at the corresponding welding position, m and n are positive integers; a cavity is opened through each first clamping block, and m*n avoidance holes are opened on the movable seat, and each avoidance hole corresponds to a cavity of the first clamping block.

[0013] The movable seat is driven to move by the second driving member to adjust the position of the clamping assembly according to the welding position, thereby ensuring the clamping effect; by setting m*n first clamping blocks, each first clamping block corresponds to a welding position, and during welding, the poles and bus bars corresponding to the welding position are clamped by the first clamping blocks. Compared with the existing method of using a pressing plate to uniformly clamp the poles and bus bars of all battery cells in the entire battery cell module, it can compensate for the error in the upper surface height of the to-be-welded position of each battery cell, ensure the welding quality of all welding positions, and thereby improve the overall welding quality of the battery cell module.

[0014] Optionally, the height measuring component is installed on the moving seat, the height measuring component includes a third driving member and at least one height measuring sensor, the fixed end of the third driving member is installed on the moving seat, the driving end of the third driving member is connected to the at least one height measuring sensor, and the third driving member is configured to drive the at least one height measuring sensor close to or away from the avoidance hole; the third driving member drives the at least one height measuring sensor to move to each avoidance hole to detect the height of the upper surface of each welding position.

[0015] The height measuring sensor is driven by the third driving member to move above the first clamping block to measure the actual height of the pole, and the upper welding mechanism is adjusted to the optimal welding height according to the detected height data. The welding mechanism welds the corresponding pole position to ensure the welding quality.

[0016] Optionally, each group of clamping parts also includes two second clamping blocks, which are movably mounted on the movable seat through an elastic component, and the two second clamping blocks are respectively located on both sides of the m first clamping blocks in the same group. The second clamping blocks are configured to clamp adjacent positions to be welded or welded positions while the first clamping blocks in the same group clamp the corresponding welding positions.

[0017] The second clamping block is used to clamp the adjacent areas to be welded or welded during welding to avoid affecting the areas being welded and not welded. Since the pole and the busbar need to be welded together during welding, and one busbar may simultaneously connect the poles of at least two battery cells, it is necessary to clamp the nearby areas to be welded during welding to avoid the situation where one end of the busbar is clamped and the other end is lifted up, resulting in poor welding quality at the lifted position.

[0018] Optionally, the elastic component includes a guide member and an elastic member, the first end of the guide member is installed on the first clamping block and / or the second clamping block, the second end of the guide member is installed on the movable seat, the elastic member is sleeved on the guide member, the first end of the elastic member abuts the first clamping block or the second clamping block, and the second end of the elastic member abuts the movable seat.

[0019] The elastic component enables the first clamping block and the second clamping block to have a certain contact buffering ability and pre-clamping function when applying pressure to the welding position, so as to avoid damaging the welded area or moving the area being welded and to be welded. The guide member is used to improve the position accuracy of the first clamping block or the second clamping block when it moves relative to the movable seat, and the elastic member provides the first clamping block or the second clamping block with contact buffering and reset capabilities.

[0020] Optionally, a first dust removal assembly is provided on the first clamping block, and the first dust removal assembly is configured to remove impurities and smoke generated during welding by the laser welder; the welding mechanism also includes an air blowing assembly, and the air blowing assembly is configured to blow away impurities and smoke generated during welding by the laser welder.

[0021] The impurities and gases generated during laser welding are blown away by the air blowing component, and the impurities and smoke are sucked away by the first dust removal component. The two work together to effectively remove pollutants generated by welding and reduce pollution to the surrounding environment to prevent pollutants from affecting the welding quality.

[0022] Optionally, each set of processing parts is also provided with a cleaning mechanism, which is configured to clean the cavity of the first clamping block, and the cleaning mechanism includes a fourth driving member, a fifth driving member and a cleaning head, the fixed end of the fifth driving member is installed on the driving end of the fourth driving member, the fourth driving member is configured to drive the fifth driving member to move horizontally and lift, the driving end of the fifth driving member is connected to the cleaning head, and the fifth driving member is configured to drive the cleaning head to rotate.

[0023] The cavity of the first pressing block is effectively cleaned by the cleaning mechanism, and the cleaning head is endowed with the functions of lateral movement, lifting and rotating by the fourth driving member and the fifth driving member, thereby meeting the cleaning requirements of multiple positions and multiple angles.

[0024] Optionally, each set of processing parts is also provided with a second dust removal component, and the second dust removal component is configured to remove impurities generated when the cleaning mechanism cleans the cavity of the first pressing block.

[0025] The second dust removal component removes impurities generated during the cleaning process to prevent the impurities from falling onto the welding station and affecting the subsequent welding quality.

[0026] Optionally, a tidying component is also provided at the welding station, and the tidying component is configured to tidy the battery cell module at the welding station before the clamping mechanism clamps the pole and bus bar at the corresponding welding position, and the tidying component includes a lifting drive, a lifting member, a first tidying member, a second tidying member and a tidying drive, wherein: the driving end of the lifting drive is connected to the lifting member, and the lifting drive is configured to drive the lifting member to lift and lower, so as to lift the battery cell module to the tidying station or lower the tidying battery cell module to the welding station through the lifting member; the first tidying member and the second tidying member The two regularizing pieces are correspondingly arranged on opposite sides of the lifting piece along the conveying direction of the battery cell module. The first regularizing piece and the second regularizing piece can be close to or away from the lifting piece. The driving end of the regularizing driving piece is connected to the first regularizing piece and the second regularizing piece. The regularizing driving piece is configured to drive the first regularizing piece and the second regularizing piece to approach or move away from each other. The regularizing driving piece drives the first regularizing piece and the second regularizing piece to approach each other to regularize the battery cell module at the regularizing station; the first regularizing piece can be lifted and lowered relative to the lifting piece to avoid the battery cell module moving into or out of the welding station.

[0027] The cell module at the welding station is regularized by the regularizing component before pressing, ensuring that the pressing mechanism accurately presses the poles and bus bars corresponding to the welding position, and the cell module is lifted to the regularizing station by the lifting part, and then the regularizing drive part drives the first regularizing part and the second regularizing part to regularize the cell module to ensure the accurate position of the cell module.

[0028] Optionally, each set of processing parts includes two sets of clamping mechanisms. When the welding mechanism performs welding on the welding position clamped by one set of clamping mechanisms, the other set of clamping mechanisms locates and measures the height of the to-be-welded position of each battery cell of the battery cell module.

[0029] Two sets of clamping mechanisms are used to alternately perform positioning and height measurement to assist welding, which reduces the waiting time before welding, greatly improves processing efficiency, and ensures the welding quality of each welding point.

[0030] Optionally, the battery cell module welding device includes two sets of processing parts arranged in parallel, and the welding mechanism is configured to move alternately to the two sets of processing parts to work. When the welding mechanism is welding the battery cell modules on one set of processing parts, the conveying mechanism on the other set of processing parts loads and unloads the battery cell modules.

[0031] The two sets of processing units are used to alternately load and unload the battery cell modules and perform pre-welding processing, and the welding mechanism is cooperated to efficiently complete the welding, reducing the waiting time of the welding mechanism and greatly improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of a battery cell module welding device provided in an embodiment of the present application;

[0033] Figure 2 yes Figure 1 A top view of

[0034] Figure 3 yes Figure 1 A front view of

[0035] Figure 4 is a structural schematic diagram of a clamping assembly involved in an embodiment of the present application;

[0036] Figure 5 yes Figure 4 A top view of

[0037] Figure 6 yes Figure 4 Bottom view of

[0038] Figure 7 yes Figure 4 A front view of

[0039] Figure 8 is a schematic structural diagram of a first pressing block involved in an embodiment of the present application;

[0040] Fig. 9 It is a schematic structural diagram of the cleaning mechanism and the second dust removal component involved in the embodiment of the present application;

[0041] Fig.10 It is a schematic diagram of the structure of the regular components involved in the embodiment of the present application;

[0042] Fig.11 It is a schematic diagram of the layout of two sets of processing units involved in the embodiment of the present application.

[0043] Figures 1 to 11 The following reference numerals are included:

[0044] Welding mechanism 1, laser welder 11;

[0045] Conveying mechanism 2;

[0046] The clamping mechanism 3 includes a clamping assembly 31, a second driving member 311, a movable seat 312, an avoidance hole 3121, a clamping member 313, a first clamping block 3131, a second clamping block 3132, a positioning assembly 32, a height measuring assembly 33, a third driving member 331, a height measuring sensor 332, a guide assembly 34, a linear guide rail 341, a slider 342, a sliding member 343, an elastic assembly 35, a guide member 351, and an elastic member 352;

[0047] A first dust removal component 4, a dust suction channel 41, and a first dust suction pipeline 42;

[0048] Cleaning mechanism 5, fourth driving member 51, fifth driving member 52, cleaning head 53;

[0049] A second dust removal assembly 6, a second dust suction pipeline 61, and a dust suction port 62;

[0050] The arranging component 7 comprises a lifting driving member 71 , a lifting member 72 , a first arranging member 73 , a second arranging member 74 , and an arranging driving member 75 . DETAILED DESCRIPTION

[0051] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0052] During the processing of the battery cell module, the poles and busbars of the battery cell module need to be welded together by a welding device, and one busbar usually connects the poles of at least two batteries at the same time. The existing welding device for welding battery cell modules usually includes a transfer mechanism and a laser welder. The transfer mechanism drives the laser welder to move to the top of the pole to be welded according to the position information of the pole of the battery cell module, and then descends to a certain height to weld the pole and busbar.

[0053] However, in the actual production process, the welding height of the existing laser welder is certain, but there may be a certain error in the upper surface height of each battery cell to be welded. This makes it impossible to ensure that the laser welder at all welding positions can be at the optimal welding height, and it is also impossible to guarantee the welding quality of each welding position.

[0054] In this regard, the present application provides a battery module welding device, which can realize the compaction of the poles and busbars at each welding position in a small area, and detect the upper surface height of the corresponding welding position one by one, so as to adjust the welding mechanism to a better welding height at each welding position, thereby ensuring the welding quality of each welding position. Figures 1 to 11 As shown, the battery cell module welding device provided in the embodiment of the present application includes a welding mechanism 1 and at least one set of processing parts, wherein:

[0055] The welding mechanism 1 comprises a first driving member and a laser welder 11, wherein a driving end of the first driving member is connected to the laser welder 11, and the first driving member is configured to drive the laser welder 11 to move horizontally and to rise and fall;

[0056] Each set of processing parts includes a conveying mechanism 2 and at least one set of pressing mechanism 3, and the conveying mechanism 2 is configured to move the battery cell module to be welded to the welding station or to move the battery cell module welded at the welding station out of the welding station;

[0057] The clamping mechanism 3 includes a clamping assembly 31, a positioning assembly 32 and a height measuring assembly 33. The clamping assembly 31 is configured to clamp the pole and the busbar corresponding to the welding position before welding by the welding mechanism 1. The positioning assembly 32 is configured to position the pole corresponding to the welding position. The height measuring assembly 33 is configured to detect the height of the upper surface of the corresponding welding position before welding by the welding mechanism 1.

[0058] The first driving member is configured to drive the laser welder 11 to move horizontally to the top of the welding position according to the positioning information of the positioning assembly 32. The first driving member is also configured to drive the laser welder 11 to descend to a preset height according to the height information of the upper surface of each welding position detected by the height measuring assembly 33, so as to weld the pole and busbar at the welding position. In this embodiment, the first driving member takes the robot arm driving the laser welder 11 to move horizontally and lift up and down as an example. Similar driving forms are applicable and are not limited here.

[0059] In addition, the positioning method of the positioning component 32 is not limited. It can be positioned by taking pictures one by one, or calculated by pre-set position parameters of the battery module. This embodiment takes the example of installing a camera on a lifting and translation module and positioning the welding points by taking pictures.

[0060] Therefore, the battery module welding device proposed in the present application realizes the compression of the pole and busbar corresponding to the welding position through the clamping component 31; the positioning of the pole at the corresponding welding position on the horizontal plane is realized through the positioning component 32; the height of the upper surface of the corresponding welding position is detected before the welding of the welding structure through the height measuring component 33, the descent height of the laser welder 11 is calculated according to the height of the upper surface of the welding position, and the laser welder 11 is driven to descend to the optimal welding height through the first driving member, thereby ensuring that the laser welder 11 is at a better welding height during welding at each welding position, so as to ensure the welding quality of each welding position.

[0061] As an optional solution, the clamping assembly 31 includes a second driving member 311, a moving seat 312 and n groups of clamping members 313. The driving end of the second driving member 311 is connected to the moving seat 312. The second driving member 311 is configured to drive the moving seat 312 to move horizontally and vertically. In this embodiment, the second driving member 311 takes the horizontal linear module driving the vertical linear module to move horizontally and the vertical linear module driving the moving seat 312 to move up and down as an example. Similar driving forms can be applied and are not limited here. Each group of clamping members 313 includes m first clamping blocks 31 31, the first clamping block 3131 is movably mounted on the movable seat 312 through the elastic component 35, each first clamping block 3131 corresponds to a welding position of the battery module, each welding position is provided with a pole, and the first clamping block 3131 is configured to clamp the pole and the busbar at the corresponding welding position, m and n are positive integers; each first clamping block 3131 is provided with a cavity, and the movable seat 312 is provided with m*n avoidance holes 3121, and each avoidance hole 3121 corresponds to a cavity setting of the first clamping block 3131, see Figures 4 to 7 .

[0062] Among them, the welding mechanism 1 is not limited to laser welding, and other welding methods can be used equally. When laser welding is used, the laser emitted by the laser welding head passes through the avoidance hole 3121 and the cavity, and the first clamping block 3131 is preferably annular, and the cavity is the inner hole of the ring.

[0063] Thus, the movable seat 312 is driven to move by the second driving member 311 to adjust the position of the clamping assembly 31 according to the welding position, thereby ensuring the clamping effect; by setting m*n first clamping blocks 3131, each first clamping block 3131 corresponds to a welding position. During welding, the poles and bus bars corresponding to the welding positions are clamped by the first clamping blocks 3131. Compared with the existing method of using a pressing plate to uniformly clamp the poles and bus bars of all the battery cells of the entire battery cell module, the error of the upper surface height of the to-be-welded position of each battery cell can be compensated, thereby ensuring the welding quality of all welding positions and thereby improving the overall welding quality of the battery cell module.

[0064] Specifically, the height measuring component 33 is installed on the moving base 312, and the height measuring component 33 includes a third driving member 331 and at least one height measuring sensor 332. The fixed end of the third driving member 331 is installed on the moving base 312, and the driving end of the third driving member 331 is connected to the at least one height measuring sensor 332. The third driving member 331 is configured to drive at least one height measuring sensor 332 to approach or move away from the avoidance hole 3121. In this embodiment, the third driving member 331 is exemplified by a cylinder, and similar driving forms are applicable, which are not limited here; the third driving member 331 drives at least one height measuring sensor 332 to move to each avoidance hole 3121 to detect the height of the pole below each avoidance hole 3121.

[0065] Therefore, the height measuring sensor 332 is driven by the third driving member 331 to move to above the first clamping block 3131, and the actual height of the pole is measured. According to the detected height data, the upper laser welder 11 is adjusted to the optimal welding height, and the corresponding pole position is welded to ensure the welding quality.

[0066] Furthermore, the height sensor 332 is slidably mounted on the moving seat 312 through a guide assembly 34, the guide assembly 34 includes a linear guide rail 341 and a slider 342, the height sensor 332 is mounted on a slider 343, the linear guide rail 341 is fixed on the moving seat 312, the slider 343 is slidably mounted on the linear guide rail 341 through the slider 342, the driving end of the third driving member 331 is connected to the slider 343, and the slider 343 here refers to a mounting seat that slides relative to the moving seat 312.

[0067] Therefore, the third driving member 331 drives the sliding member 343 to move along the linear guide rail 341, thereby driving the height sensor 332 to translate relative to the moving seat 312, thereby facilitating the adjustment of the position of the height sensor 332 to align with the pole up and down, thereby improving the accuracy of the height measurement data.

[0068] As an optional solution, each group of pressing members 313 further includes two second pressing blocks 3132, which are movably mounted on the movable seat 312 via an elastic component 35, and the two second pressing blocks 3132 are respectively located on both sides of the m first pressing blocks 3131 in the same group, and the second pressing blocks 3132 are configured to press the adjacent positions to be welded or welded positions while the first pressing blocks 3131 in the same group press the corresponding welding positions. Figure 6 In this embodiment, four first pressing blocks 3131 are taken as an example, and a second pressing block 3132 is respectively arranged on one side of the four first pressing blocks 3131, for a total of four second pressing blocks 3132.

[0069] Therefore, the adjacent areas to be welded or welded are compressed by the second clamping block 3132 during welding to avoid affecting the areas being welded and not welded. Since the pole and the busbar need to be welded together during welding, a busbar may simultaneously connect the poles of at least two battery cells. Therefore, it is necessary to compress the nearby areas to be welded during welding to avoid the situation where one end of the busbar is compressed and the other end is lifted up, resulting in poor welding quality at the lifted position.

[0070] The second pressing block 3132 has the same structure and shape as the first pressing block 3131. This embodiment is described in detail with reference to the structure of the first pressing block 3131. Figure 8 . Further, the elastic component 35 includes a guide member 351 and an elastic member 352. The first end of the guide member 351 is mounted on the first clamping block 3131 and / or the second clamping block 3132, the second end of the guide member 351 is mounted on the movable seat 312, the elastic member 352 is sleeved on the guide member 351, the first end of the elastic member 352 abuts against the first clamping block 3131 or the second clamping block 3132, and the second end of the elastic member 352 abuts against the movable seat 312. In this embodiment, the guide member 351 is exemplified by a guide rod, and the elastic member 352 is exemplified by a spring sleeved on the guide rod. Similar functional members can be applied and are not limited here.

[0071] Therefore, through the elastic component 35, the first clamping block 3131 and the second clamping block 3132 have a certain contact buffering ability and pre-clamping function when applying pressure to the welding position, so as to avoid damaging the welded area or moving the area being welded and to be welded, and the guide member 351 is used to improve the position accuracy of the first clamping block 3131 or the second clamping block 3132 when moving relative to the movable seat 312, and the elastic member 352 provides contact buffering and reset capabilities for the first clamping block 3131 or the second clamping block 3132.

[0072] As an optional solution, a first dust removal component 4 is provided on the first clamping block 3131, and the first dust removal component 4 is configured to remove impurities and smoke generated by the laser welder 11 during welding; the welding mechanism 1 also includes an air blowing component, which is configured to blow away impurities and smoke generated by the laser welder 11 during welding.

[0073] Specifically, the first dust removal component 4 includes a dust suction channel 41, a first dust suction pipe 42 and an air suction device. The dust suction channel 41 and the cavity are correspondingly arranged in the first clamping block 3131. The first end of the first dust suction pipe 42 is connected to the dust suction channel 41, and the second end of the first dust suction pipe 42 is connected to the air suction device.

[0074] Therefore, by setting a dust suction channel 41 and a cavity in the first clamping block 3131, and then connecting it with an external suction device through the first dust suction pipe 42, the pollutants generated at the welding position of the first clamping block 3131 can be efficiently sucked away; then the impurities and gases generated during laser welding are blown away by the blowing component, and the first dust removal component 4 and the blowing component cooperate to blow and suck, so as to efficiently remove the pollutants generated by welding and reduce the pollution of the surrounding environment, so as to prevent the pollutants from affecting the welding quality.

[0075] As an optional solution, each set of processing parts is also provided with a cleaning mechanism 5, and the cleaning mechanism 5 is configured to clean the cavity of the first pressing block 3131, see Fig. 9 The cleaning mechanism 5 includes a fourth driving member 51, a fifth driving member 52 and a cleaning head 53. The fixed end of the fifth driving member 52 is installed at the driving end of the fourth driving member 51. The fourth driving member 51 is configured to drive the fifth driving member 52 to move horizontally and lift up and down. The driving end of the fifth driving member 52 is connected to the cleaning head 53. The fifth driving member 52 is configured to drive the cleaning head 53 to rotate. In this embodiment, the fourth driving member 51 takes the horizontal linear module driving the vertical linear module to move horizontally, and the vertical linear module drives the fifth driving member 52 to lift and lower as an example. The fifth driving member 52 takes the motor as an example. Similar driving forms are applicable and are not limited here.

[0076] Thus, the cavity of the first pressing block 3131 is effectively cleaned by the cleaning mechanism 5, and the cleaning head 53 is given the functions of lateral movement, lifting and rotating by the fourth driving member 51 and the fifth driving member 52, thereby meeting the cleaning requirements of multiple positions and angles.

[0077] Furthermore, each set of processing parts is also provided with a second dust removal component 6, and the second dust removal component 6 is configured to remove impurities generated when the cleaning mechanism 5 cleans the cavity of the first pressing block 3131.

[0078] Specifically, the second dust removal component 6 includes a second dust suction pipeline 61 and a dust suction port 62 arranged on the second dust suction pipeline 61. The dust suction port 62 is located directly below the cleaning head 53 and the first clamping block 3131, and is arranged in a long strip shape to collect impurities generated within the operating range of the cleaning head 53. The second dust suction pipeline 61 is connected to the suction device.

[0079] Thus, impurities generated during the cleaning process are removed by the second dust removal assembly 6 to prevent the impurities from falling onto the welding station and affecting the subsequent welding quality.

[0080] As an optional solution, a regularization component 7 is also provided at the welding station, and the regularization component 7 is configured to regularize the battery cell module at the welding station before the clamping mechanism 3 clamps the pole and busbar at the corresponding welding position. The regularization component 7 includes a lifting drive 71, a lifting member 72, a first regularization member 73, a second regularization member 74 and a regularization drive member 75, see Fig.10 .

[0081] Furthermore, the driving end of the lifting drive member 71 is connected to the lifting member 72, and the lifting drive member 71 is configured to drive the lifting member 72 to rise and fall, so as to lift the battery cell module to the tidying station or lower the tidy battery cell module to the welding station through the lifting member 72. In this embodiment, the lifting drive member 71 takes the motor screw pair as an example, and similar driving forms can be applied, which are not limited here; the lifting member 72 refers to a lifting platform that moves relative to the welding station.

[0082] The first regularizing piece 73 and the second regularizing piece 74 are correspondingly arranged on the opposite sides of the lifting piece 72 along the conveying direction of the battery cell module. The first regularizing piece 73 and the second regularizing piece 74 can be close to or away from the lifting piece 72. The driving end of the regularizing driving member 75 is connected to the first regularizing piece 73 and the second regularizing piece 74. The regularizing driving member 75 is configured to drive the first regularizing piece 73 and the second regularizing piece 74 to approach or move away from each other. The regularizing driving member 75 drives the first regularizing piece 73 and the second regularizing piece 74 to approach each other to regularize the battery cell module at the regularizing station. In this embodiment, the first regularizing piece 73 and the second regularizing piece 74 take the top blocks located on both sides of the regularizing station as an example, and the regularizing driving member 75 is a cylinder that drives the top blocks on both sides to approach or move away from each other.

[0083] In particular, the first regulating member 73 can be raised and lowered relative to the lifting member 72 to avoid the battery cell module from being moved into or out of the welding station, and the lifting can be driven by a cylinder.

[0084] Therefore, the cell module at the welding station is regulated by the regulated component 7 before pressing, ensuring that the pressing mechanism 3 accurately presses the poles and bus bars corresponding to the welding positions, and the cell module is lifted to the regulated station by the lifting member 72, and then the regulated driving member 75 drives the first regulated member 73 and the second regulated member 74 to regulate the cell module, ensuring the accurate position of the cell module.

[0085] As an optional solution, each set of processing parts includes two sets of clamping mechanisms 3. When the welding mechanism 1 performs welding on the welding position clamped by one set of clamping mechanisms 3, the other set of clamping mechanisms 3 locates and measures the height of the welding position of each battery cell in the battery cell module.

[0086] Therefore, the two sets of clamping mechanisms 3 are used to alternately perform positioning and height measurement to assist welding, thereby reducing the waiting time before welding, greatly improving the processing efficiency, and ensuring the welding quality of each welding point.

[0087] Furthermore, the battery cell module welding device includes two sets of processing parts arranged in parallel, and the welding mechanism 1 is configured to move to the two sets of processing parts alternately to work. When the welding mechanism 1 is welding the battery cell module on one set of processing parts, the conveying mechanism 2 on the other set of processing parts loads and unloads the battery cell module. Fig.11 .

[0088] Therefore, the two sets of processing parts are used to alternately load and unload the battery cell module and perform pre-welding processing, so as to cooperate with the welding mechanism 1 to efficiently complete the welding, reduce the waiting time of the welding mechanism 1, and greatly improve the welding efficiency.

[0089] The specific working process of the battery module welding device is as follows:

[0090] (1) The conveying mechanism 2 conveys the battery cell module to be welded to the welding station;

[0091] (2) The regularization component 7 lifts the cell module at the welding station to the regularization station before pressing and welding, and regularizes the position, and then lowers the regularized cell module to the welding station;

[0092] (3) The cleaning mechanism 5 cleans the cavity of the first pressing block 3131, and the second dust removal assembly 6 removes impurities generated when the cleaning mechanism 5 cleans the cavity of the first pressing block 3131;

[0093] (4) The clamping mechanism 3 processes the poles and busbars of the battery module. The clamping assembly 31 clamps the poles and busbars corresponding to the welding positions. The positioning assembly 32 positions the poles corresponding to the welding positions. The height measuring assembly 33 detects the height of the upper surface of the corresponding welding positions.

[0094] (5) The welding mechanism 1 drives the laser welder 11 to move horizontally to the top of the welding position according to the positioning information of the positioning component 32, and then drives the laser welder 11 to descend to a preset height according to the height information of each welding position detected by the height measuring component 33, and welds the pole and busbar at the welding position;

[0095] (6) During the welding process, the air blowing assembly in the welding mechanism 1 blows away the impurities and fumes generated by the laser welder 11 during welding, and the first dust removal assembly 4 removes the impurities and fumes generated by the laser welder 11 during welding;

[0096] (7) The conveying mechanism 2 moves the battery cell module that has been welded at the welding station out of the welding station.

[0097] Among them, step (2) and step (3) can be performed simultaneously; step (4) and step (5) can be performed by two sets of clamping mechanisms 3 respectively, when one set of clamping mechanisms 3 locates and measures the height of the welding position of each battery cell of the battery cell module, the welding mechanism 1 welds the welding position clamped by the other set of clamping mechanisms 3; when two sets of processing parts are provided, the welding mechanism 1 is moved to the two sets of processing parts alternately for work, when welding the battery cell module on one set of processing parts, the conveying mechanism 2 on the other set of processing parts loads and unloads the battery cell module. Optionally, step (3) does not need to be performed every time. According to the actual production process, a fixed cleaning time can be set, such as 2 hours, and then the cleaning operation of step (3) is performed every 2 hours.

[0098] In summary, the battery cell module welding device provided in the embodiment of the present application has the following advantages:

[0099] 1) The clamping method of using a first clamping block 3131 to clamp a welding position can compensate for the error in the upper surface height of the position to be welded of each battery cell, ensure the welding quality of all welding positions, and thus improve the overall welding quality of the battery cell module;

[0100] 2) A height measuring component 33 is provided, which can control the welding actuator to move to the optimal welding height according to the height of the upper surface of the welding position, thereby further improving the welding quality of the battery module;

[0101] 3) A second pressing block 3132 is provided, and during welding, the second pressing block 3132 is used to press the nearby area to be welded, so as to avoid the situation where one end of the busbar is pressed and the other end is lifted, thereby ensuring the welding quality of the battery module;

[0102] 4) A first dust removal component 4 and an air blowing component are provided, which can timely remove impurities and fumes generated by the welding mechanism 1 during welding, thus ensuring a clean working environment;

[0103] 5) A cleaning mechanism 5 and a second dust removal assembly 6 are provided, which can clean the cavity of the first pressing block 3131 in time, ensure the pressing effect of the first pressing block 3131, and thus ensure the welding quality;

[0104] 6) The arrangement of the regular component 7 can improve the position accuracy of the battery module, ensure that the clamping mechanism 3 accurately clamps the pole and busbar corresponding to the welding position, and thus ensure the welding quality.

[0105] The above embodiments are only to illustrate the basic principles and characteristics of the present application. The present application is not limited by the above examples. Without departing from the spirit and scope of the present application, the present application may be subject to various changes and modifications, which are within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.

Claims

1. A battery module welding device, characterized in that: The battery module welding device comprises a welding mechanism and at least one set of processing parts, wherein: The welding mechanism comprises a first driving member and a laser welder, wherein a driving end of the first driving member is connected to the laser welder, and the first driving member is configured to drive the laser welder to move laterally and to rise and fall; Each set of the processing parts includes a conveying mechanism and at least one set of pressing mechanisms, wherein the conveying mechanism is configured to move the battery cell module to be welded to the welding station or to move the battery cell module welded at the welding station out of the welding station; The clamping mechanism comprises a clamping assembly, a positioning assembly and a height measuring assembly. The clamping assembly is configured to clamp the pole and the busbar corresponding to the welding position before the welding mechanism is welded. The positioning assembly is configured to position the pole corresponding to the welding position. The height measuring assembly is configured to detect the height of the upper surface of the corresponding welding position before the welding mechanism is welded. The first driving member is configured to drive the laser welder to move horizontally to directly above the welding position according to the positioning information of the positioning component. The first driving member is also configured to drive the laser welder to descend to a preset height according to the height information of the upper surface of each welding position detected by the height measuring component, so as to weld the pole and bus bar at the welding position.

2. The battery core module welding device according to claim 1, characterized in that: The clamping assembly includes a second driving member, a movable seat and n groups of clamping members, the driving end of the second driving member is connected to the movable seat, the second driving member is configured to drive the movable seat to move horizontally and vertically, each group of the clamping members includes m first clamping blocks, the first clamping blocks are movably mounted on the movable seat through an elastic component, each of the first clamping blocks corresponds to a welding position of the battery cell module, each of the welding positions is provided with a pole, the first clamping blocks are configured to clamp the poles and busbars at the corresponding welding positions, m and n are positive integers; a cavity is opened through each of the first clamping blocks, and m*n avoidance holes are opened on the movable seat, and each of the avoidance holes corresponds to a cavity of the first clamping block.

3. The battery core module welding device according to claim 2, characterized in that: The height measuring assembly is mounted on the moving base, the height measuring assembly comprises a third driving member and at least one height measuring sensor, the fixed end of the third driving member is mounted on the moving base, the driving end of the third driving member is connected to the at least one height measuring sensor, and the third driving member is configured to drive the at least one height measuring sensor to approach or move away from the avoidance hole; The third driving member drives the at least one height measuring sensor to move to each of the avoidance holes to detect the height of the upper surface of each of the welding positions.

4. The battery cell module welding device according to claim 2, characterized in that: Each group of the clamping parts also includes two second clamping blocks, which are movably mounted on the movable seat through an elastic component. The two second clamping blocks are respectively located on both sides of the m first clamping blocks in the same group. The second clamping blocks are configured to clamp adjacent positions to be welded or welded positions while the first clamping blocks in the same group clamp corresponding welding positions.

5. The battery cell module welding device according to claim 4, characterized in that: The elastic component includes a guide member and an elastic member, the first end of the guide member is installed on the first clamping block and / or the second clamping block, the second end of the guide member is installed on the movable seat, the elastic member is sleeved on the guide member, the first end of the elastic member abuts the first clamping block or the second clamping block, and the second end of the elastic member abuts the movable seat.

6. The battery core module welding device according to claim 2, characterized in that: A first dust removal component is provided on the first pressing block, and the first dust removal component is configured to remove impurities and smoke generated by the laser welder during welding; the welding mechanism also includes an air blowing component, and the air blowing component is configured to blow away impurities and smoke generated by the laser welder during welding.

7. The battery module welding device according to claim 2, characterized in that: Each set of the processing part is also provided with a cleaning mechanism, and the cleaning mechanism is configured to clean the cavity of the first clamping block. The cleaning mechanism includes a fourth driving member, a fifth driving member and a cleaning head. The fixed end of the fifth driving member is installed on the driving end of the fourth driving member. The fourth driving member is configured to drive the fifth driving member to move horizontally and lift. The driving end of the fifth driving member is connected to the cleaning head, and the fifth driving member is configured to drive the cleaning head to rotate.

8. The battery module welding device according to claim 7, characterized in that: Each set of the processing part is also provided with a second dust removal assembly, and the second dust removal assembly is configured to remove impurities generated when the cleaning mechanism cleans the cavity of the first pressing block.

9. The battery core module welding device according to claim 1, characterized in that: The welding station is also provided with a regularization component, which is configured to regularize the battery cell module at the welding station before the clamping mechanism clamps the pole and busbar at the corresponding welding position, and the regularization component includes a lifting drive, a lifting part, a first regularization part, a second regularization part and a regularization drive, wherein: The driving end of the lifting driving member is connected to the lifting member, and the lifting driving member is configured to drive the lifting member to move up and down, so as to lift the battery cell module to the arranging station or lower the arranging battery cell module to the welding station through the lifting member; The first tidying piece and the second tidying piece are correspondingly arranged on opposite sides of the lifting piece along the conveying direction of the battery cell module, the first tidying piece and the second tidying piece can be close to or away from the lifting piece, the driving end of the tidying driving piece is connected to the first tidying piece and the second tidying piece, the tidying driving piece is configured to drive the first tidying piece and the second tidying piece to approach or move away from each other, and the tidying driving piece drives the first tidying piece and the second tidying piece to approach each other, so as to implement tidying on the battery cell module at the tidying station; The first regulating member can be raised and lowered relative to the lifting member to avoid the battery cell module from being moved into or out of the welding station.

10. The battery module welding device according to claim 1, characterized in that: Each set of the processing parts includes two sets of clamping mechanisms. When the welding mechanism performs welding on the welding position clamped by one set of the clamping mechanisms, the other set of the clamping mechanisms locates and measures the height of the to-be-welded position of each battery cell of the battery cell module.

11. The battery module welding device according to claim 1, characterized in that: The battery cell module welding device includes two sets of processing parts arranged in parallel, and the welding mechanism is configured to move to the two sets of processing parts alternately to work. When the welding mechanism is welding the battery cell modules on one set of processing parts, the conveying mechanism on the other set of processing parts loads and unloads the battery cell modules.

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