Automatic top cover assembling device and method

Abstract

The invention belongs to the technical field of battery production, and discloses an automatic top cover assembling device and method. The automatic top cover assembling device comprises a moving module and a feeding module. The feeding module comprises a clamping jaw mechanism and two abutting mechanisms arranged in the first direction at intervals, the clamping jaw mechanism is connected with the output end of the moving module and used for clamping the top cover, and each abutting mechanism comprises an abutting installation base connected with the output end of the moving module and a pressing rod arranged on the abutting installation base. When the moving module drives the feeding module to move to assemble the top cover on the battery cell, the two pressing rods are arranged in the two pole column holes in a penetrating mode respectively and abut against the two sets of pole column assemblies respectively so as to enable the pole column assemblies to recover deformation, and the change of the center distance caused by deformation of the pole column assemblies is counteracted; and the center distance of the two groups of pole assemblies is matched with the center distance of the two pole holes. According to the invention, the change of the center distance caused by the deformation of the pole assembly is offset in the assembly process of the top cover, so that the assembly yield is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and in particular to an automatic top cover assembly device and method. Background Art

[0002] The production process of secondary batteries is mainly divided into three main processes: electrode manufacturing, battery cell assembly and chemical composition. Figure 1 As shown, the secondary battery includes a battery cell 200 and a top cover 100 disposed on the battery cell 200, a pole assembly 201 is disposed on the battery cell 200, a pole hole 101 is disposed on the top cover 100, and the pole assembly 201 includes a pole and an adapter. Among them, the pole tab welding is the main link in the battery cell assembly process. After the pole tab is welded to the adapter, the top cover 100 is assembled to the battery cell 200 and the pole is welded. When assembling the top cover 100, it is necessary to ensure that the poles on the two adapters are respectively inserted into the two pole holes 101 on the top cover 100. However, in the pole tab welding process, due to the high temperature generated during welding, the adapter is prone to thermal deformation, which in turn causes the center distance between the two poles to change, causing the top cover 100 to fail to assemble. Summary of the invention

[0003] The object of the present invention is to provide a top cover automatic assembly device and method, which can restore the deformation of a deformed pole assembly and ensure the assembly of the top cover and the battery cell.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A top cover automatic assembly device, used for assembling the top cover onto a battery cell, wherein the top cover is provided with two pole holes spaced apart along a first direction, and the battery cell is provided with two groups of pole assemblies corresponding to the two pole holes respectively, and the top cover automatic assembly device comprises:

[0006] Mobile modules;

[0007] The feeding module comprises a clamping mechanism and two groups of pressing mechanisms arranged at intervals along a first direction. The clamping mechanism is connected to the output end of the movable module and is used to clamp the top cover. Each group of the pressing mechanisms comprises a pressing mounting seat connected to the output end of the movable module and a pressure rod arranged on the pressing mounting seat. The two pressure rods can respectively pass through the two pole holes and can respectively press on the two groups of pole assemblies.

[0008] As an optional solution, the pressure rod is slidably connected to the pressing mounting seat, and each group of the pressing mechanism further includes a first elastic member, and the first elastic member is used to drive the pressure rod to elastically press against the corresponding pole assembly.

[0009] As an optional solution, the clamping mechanism includes:

[0010] A clamping jaw driving member, fixedly connected to the output end of the mobile module;

[0011] Two groups of anti-collision components are arranged at intervals along the second direction and connected to the output end of the clamping jaw driving member;

[0012] Two groups of clamping jaw assemblies are arranged at intervals along the second direction and used to clamp the top cover, the two groups of clamping jaw assemblies are elastically connected to the two anti-collision assemblies respectively, and the clamping jaw assemblies can be displaced along the third direction and elastically compress the anti-collision assemblies;

[0013] The first direction, the second direction and the third direction are perpendicular to each other.

[0014] As an optional solution, the anti-collision component includes:

[0015] An anti-collision plate, fixedly arranged at the output end of the clamping jaw driving member, and the anti-collision plate is provided with a sliding hole;

[0016] A slide rod is slidably disposed in the slide hole, and one end of the slide rod is limited to the end surface of the anti-collision plate away from the clamping jaw assembly, and the other end is connected to the clamping jaw assembly;

[0017] The second elastic member has two ends elastically abutting against the anti-collision plate and the clamping claw assembly respectively.

[0018] As an optional solution, the clamping jaw mechanism further includes two groups of guide assemblies which are spaced apart along the second direction and connected to the anti-collision assembly, and the two groups of the clamping jaw assemblies are slidably connected to the corresponding two groups of guide assemblies respectively.

[0019] As an optional solution, each group of the guide components includes:

[0020] A guide plate connected to the corresponding anti-collision component;

[0021] A guide rail and a slider are slidably connected to each other, wherein one of the guide rail and the slider is fixedly connected to the guide plate, and the other is fixedly connected to the corresponding clamping jaw assembly.

[0022] As an optional solution, each group of the clamping jaw assemblies includes:

[0023] A clamping claw connecting block, elastically connected to the anti-collision component;

[0024] The clamping jaws are arranged on the clamping jaw connecting block, and the end surfaces of the clamping jaws on the two clamping jaw connecting blocks facing each other are provided with clamping grooves, and the top cover can be clamped in the clamping grooves.

[0025] As an optional solution, the mobile module includes a first module, a second module, a third module and a rotating module, the second module is arranged at the output end of the first module, the third module is arranged at the output end of the second module, the rotating module is arranged at the output end of the third module, the feeding module is arranged at the output end of the rotating module, the first module is used to drive the feeding module to move along the first direction, the second module is used to drive the feeding module to move along the second direction, the third module is used to move the feeding module along the third direction, and the rotating module is used to drive the feeding module to rotate;

[0026] The first direction, the second direction and the third direction are perpendicular to each other.

[0027] As an optional solution, the top cover automatic assembly device also includes:

[0028] A first detection module is used to detect the center distance between the two pole holes and to obtain a first offset by subtracting the center distance from the calibration parameter;

[0029] The second detection module is used to detect the center distance between the two groups of pole assemblies and to obtain a second offset by subtracting it from the calibration parameter.

[0030] The automatic assembly method of the top cover comprises the following steps:

[0031] S1, the loading module clamps the top cover;

[0032] S2, a first detection module detects the center distance between the two pole holes of the top cover, and subtracts the center distance from the calibration parameter to obtain a first offset;

[0033] S3, determining whether the first offset exceeds a preset range, if so, ejecting the top cover and returning to step S1, if not, executing step S4;

[0034] S4, the second detection module detects the center distance between the two pole assemblies, and subtracts the center distance from the calibration parameter to obtain a second offset;

[0035] S5, controlling the moving module to drive the top cover to perform position correction according to the first offset and the second offset;

[0036] S6, controlling the moving module to drive the top cover after deviation correction to move to the assembly position, so that the two pressing rods of the feeding module are pressed against the two pole assemblies respectively, and the top cover and the battery cell are assembled.

[0037] Beneficial effects of the present invention:

[0038] The present invention provides an automatic top cover assembly device, in which when a moving module drives a feeding module to assemble the top cover on a battery cell, two pressure rods are respectively inserted into two pole holes and can respectively press two groups of pole assemblies, so that the change of center distance caused by deformation of the pole assembly can be offset during the assembly process of the top cover, thereby improving the assembly yield.

[0039] The present invention provides an automatic top cover assembly method, which can obtain the offset value of the top cover and the battery cell through a first offset and a second offset, and control a moving module to perform position correction according to the offset value, so as to make the assembly of the top cover and the battery cell more accurate and improve the assembly yield of the top cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic structural diagram of a secondary battery involved in an embodiment of the present invention;

[0041] Figure 2 is a schematic structural diagram of a top cover automatic assembly device provided by an embodiment of the present invention;

[0042] Figure 3 is a first structural schematic diagram of a feeding module involved in an embodiment of the present invention;

[0043] Figure 4 It is a first structural schematic diagram of the feeding module involved in the embodiment of the present invention.

[0044] In the figure:

[0045] 100, top cover; 101, pole hole; 200, battery cell; 201, pole assembly;

[0046] 1. Mobile module; 11. First module; 12. Second module; 13. Third module; 14. Rotating module; 141. Mounting plate;

[0047] 2. Feeding module; 21. Pressing mechanism; 211. Pressing mounting seat; 2111. L-shaped plate; 2112. Connecting plate; 212. Pressing rod; 2121. Annular boss; 213. Wear reducing member; 22. Claw mechanism; 221. Claw driving member; 2211. Fixing plate; 222. Anti-collision assembly; 2221. Anti-collision plate; 2222. Sliding rod; 2222a. Limiting plate; 223. Claw assembly; 2231. Claw connecting block; 2232. Claw; 224. Guide assembly; 2241. Guide plate; 2242. Guide rail; 2243. Sliding block;

[0048] 3. First detection module; 31. First CCD camera; 32. First light emitter; 321. Connecting rod;

[0049] 4. Second detection module; 41. Second CCD camera; 42. Second light source. DETAILED DESCRIPTION

[0050] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar parts or parts having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0051] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the description of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0053] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0054] like Figure 2-Figure 4As shown, an embodiment of the present invention provides an automatic top cover assembly device for assembling a top cover 100 of a secondary battery onto a battery cell 200 , wherein the top cover 100 is provided with two pole holes 101 distributed along its length direction (i.e., the first direction), and the battery cell 200 is provided with two groups of pole assemblies 201 corresponding to the two pole holes 101 , respectively. Before assembling the top cover 100, it is necessary to first weld the pole assembly 201 to the pole lug of the battery cell 200. During the pole lug welding process, the high temperature generated by welding can easily cause the center distance of the pole assembly 201 to change. In addition, because the structure of the battery is designed, the center distance of the two pole holes 101 on the top cover 100 and the center distance of the two pole assemblies 201 located on the battery cell 200 are both fixed values ​​within a certain deviation range. When the center distance of the pole assembly 201 changes and exceeds the deviation range, the center distance of the two pole holes 101 of the top cover 100 cannot correspond to the center distance of the two pole assemblies 201, which results in the two pole assemblies 201 being unable to be inserted into the two pole holes 101 of the top cover 100 one by one when the top cover 100 is assembled, causing the top cover 100 to fail to assemble.

[0055] In view of the above problems, the top cover automatic assembly device can make the two pole assemblies 201 that will undergo a change in center distance deform and restore the center distance between the two pole assemblies 201. Specifically, the top cover automatic assembly device includes a moving module 1 and a feeding module 2. Among them, the feeding module 2 includes a clamping jaw mechanism 22 and two groups of pressing mechanisms 21 spaced apart along a first direction, the clamping jaw assembly 223 is connected to the output end of the moving module 1 and is used to clamp the top cover 100, and each group of pressing mechanisms 21 includes a pressing mounting seat 211 connected to the output end of the moving module 1 and a pressure rod 212 arranged on the pressing mounting seat 211. When the mobile module 1 drives the loading module 2 to move and assemble the top cover 100 on the battery cell 200, the clamping claw mechanism 22 first clamps the top cover 100, and the two pressure rods 212 are respectively inserted into the two pole holes 101, and then the mobile module 1 drives the loading module 2 to drive the top cover 100 to be buckled on the battery cell 200, and the two pressure rods 212 respectively press the two groups of pole assemblies 201 to restore the deformation of the pole assemblies 201, offset the change in the center distance caused by the deformation of the pole assemblies 201, so that the center distance of the two groups of pole assemblies 201 matches the center distance of the two pole holes 101, to ensure the assembly of the top cover 100.

[0056] In the automatic top cover assembly device, when the moving module 1 drives the feeding module 2 to assemble the top cover 100 on the battery cell 200, the two pressing rods 212 are respectively inserted into the two pole holes 101 and can respectively press the two groups of pole assemblies 201, so that the change of the center distance caused by the deformation of the pole assembly 201 can be offset during the assembly process of the top cover 100, thereby improving the assembly yield.

[0057] In addition, for Figure 1 For the battery in, the pole assembly 201 is connected to the insulating part, the insulating part is placed on the end face of the battery cell 200, and the pole ear of the battery cell 200 passes through the insulating part and is welded to the pole assembly 201. Therefore, the position of the pole assembly 201 relative to the battery cell 200 can still change within a small range. When assembling the pole assembly 201 and the top cover 100, the pole assembly 201 is pressed by the pressure rod 212 to avoid position displacement of the pole assembly 201 during the assembly process, which can ensure that the pole hole 101 of the top cover 100 is sleeved on the pole of the pole assembly 201.

[0058] In order to prevent the pressure rod 212 from pressing against the pole assembly 201 and causing damage to the surface of the pole assembly 201 due to hard contact between the pressure rod 212 and the pole assembly 201 , a flexible protective sleeve is sleeved on one end of the pressure rod 212 facing the pole assembly 201 .

[0059] Optionally, the material of the flexible protective cover may be rubber, silicone, etc.

[0060] In this embodiment, the output end of the mobile module 1 is provided with a mounting plate 141, and the clamping mechanism 22 and the pressing mechanism 21 are both connected to the mounting plate 141. The pole assembly 201 includes a transfer plate and a pole, and the pole is fixedly arranged on the transfer plate. Before assembling the top cover 100, the pole ear of the battery cell 200 is first welded to the transfer plate. During welding, the transfer plate will be deformed due to high temperature, thereby causing the pole arranged on the transfer plate to change position. The pressure rod 212 presses the pole to restore the deformation of the transfer plate, thereby restoring the center distance between the two poles.

[0061] Specifically, the pressure rod 212 is slidably connected to the pressing mounting seat 211, and each group of pressing mechanisms 21 also includes a first elastic member (not shown in the figure), which is used to drive the pressure rod 212 to elastically press on the corresponding pole. This structure enables the pressure rod 212 to slide away from the pole after pressing the pole when the moving module 1 drives the feeding module 2 to move, so that the pole hole 101 of the top cover 100 is sleeved on the pole, so as to facilitate the assembly of the top cover 100; and the first elastic member can be compressed during the sliding process of the pressure rod 212 away from the pole, and the first elastic member provides a reverse elastic force to the pressure rod 212, so that the adapter recovers the deformation.

[0062] In order to reduce the wear of the pressure rod 212 , the pressure mounting seat 211 is provided with a wear reducing member 213 . The pressure mounting seat 211 is provided with a mounting hole. The wear reducing member 213 is disposed in the mounting hole. The pressure rod 212 is slidably connected to the wear reducing member 213 .

[0063] Optionally, the wear reducing member 213 may be a linear bearing or a linear sleeve.

[0064] Specifically, Figure 3-Figure 4As shown, the pressing mounting seat 211 includes an L-shaped plate 2111 and a connecting plate 2112 . The horizontal plate of the L-shaped plate 2111 is fixedly connected to the mounting plate 141 . The connecting plate 2112 is provided with a mounting hole and is arranged at the lower end of the vertical plate of the L-shaped plate 2111 . The wear reducing member 213 is arranged on the connecting plate 2112 .

[0065] Optionally, the first elastic member can be selected as a first compression spring, and an annular boss 2121 is provided on the middle outer wall of the pressure rod 212. The pressure rod 212 is slidably connected to the wear-reducing member 213, and the annular boss 2121 is limited to the upper end of the wear-reducing member 213. The first compression spring is sleeved on the pressure rod 212 and elastically abuts between the horizontal plate of the L-shaped plate 2111 and the annular boss 2121.

[0066] Specifically, the clamp mechanism 22 includes a clamp driving member 221, two groups of anti-collision components 222 and two groups of clamping components 223 for clamping the top cover 100, wherein the clamp driving member 221 is fixedly connected to the mounting plate 141, the two groups of anti-collision components 222 are arranged at intervals along the second direction and connected to the output end of the clamp driving member 221, and the two groups of clamping components 223 are elastically connected to the two anti-collision components 222 respectively, and the clamp driving member 221 drives the two anti-collision components 222 to move toward each other along the second direction. , so as to drive the two clamping jaw assemblies 223 to move toward each other and clamp the top cover 100. When the moving module 1 drives the feeding module 2 to move to install the top cover 100 on the battery cell 200, if the clamping jaw assembly 223 or the top cover 100 is hit in the third direction, the clamping jaw assembly 223 can be displaced in the third direction and elastically compress the anti-collision assembly 222 to prevent structural damage; and after the feeding module 2 is away from the battery cell 200, the anti-collision assembly 222 can elastically reset the clamping jaw assembly 223.

[0067] The first direction, the second direction and the third direction are perpendicular to each other.

[0068] Optionally, the clamp driving member 221 is a bidirectional cylinder, both output ends of the bidirectional cylinder are provided with a fixing plate 2211 , and the anti-collision component 222 is connected to the fixing plate 2211 .

[0069] Furthermore, the anti-collision assembly 222 includes an anti-collision plate 2221, a slide bar 2222 and a second elastic member, wherein the anti-collision plate 2221 is connected to the corresponding fixed plate 2211, and the anti-collision plate 2221 is provided with a slide hole; the slide bar 2222 is slidably arranged in the slide hole, and one end of the slide bar 2222 is limited to the end surface of the anti-collision plate 2221 away from the clamping jaw assembly 223, and the other end is connected to the clamping jaw assembly 223; the two ends of the second elastic member elastically abut the anti-collision plate 2221 and the clamping jaw assembly 223 respectively. When a collision occurs, the clamping jaw assembly 223 is displaced in the third direction by the slide bar 2222 sliding upward in the third direction in the slide hole, and the second elastic member is compressed to store energy. After the feeding module 2 is away from the battery cell 200, the second elastic member releases elastic potential energy to reset the clamping jaw assembly 223.

[0070] Optionally, the sliding holes and the sliding rods 2222 are arranged in a one-to-one correspondence, and two sliding holes can be arranged, and the two sliding holes are arranged at intervals along the first direction, and the two sliding rods 2222 are slidably arranged in the two sliding holes respectively.

[0071] Optionally, the second elastic member may be a second compression spring, which is sleeved outside the sliding rod 2222 and elastically abuts against the anti-collision plate 2221 and the clamping jaw assembly 223 .

[0072] Optionally, a limiting plate 2222 a is provided at one end of the sliding rod 2222 , and the limiting plate 2222 a can abut against an end surface of the anti-collision plate 2221 .

[0073] In order to make the structure of the feeding module 2 more stable, the clamping mechanism 22 also includes two groups of guide assemblies 224 spaced apart along the second direction, each group of guide assemblies 224 includes a guide plate 2241, mutually connected guide rails 2242 and sliders 2243, the guide plate 2241 is fixedly connected to the corresponding anti-collision plate 2221, and one of the guide rails 2242 and the slider 2243 is fixedly connected to the guide plate 2241, and the other is fixedly connected to the clamping assembly 223. This structure enables the clamping assembly 223 to move stably when it is displaced along the third direction through the mutual sliding connection between the guide rails 2242 and the slider 2243; and when the clamping assembly 223 clamps the top cover 100 along the second direction, the guide plate 2241 can also provide support for the clamping assembly 223.

[0074] Further, each group of clamping jaw assemblies 223 includes a clamping jaw connecting block 2231 and a clamping jaw 2232 disposed on the clamping jaw connecting block 2231, the clamping jaw connecting block 2231 is connected to the other end of the sliding rod 2222, the second elastic member elastically abuts against the anti-collision plate 2221 and the clamping jaw connecting block 2231, and the end surfaces of the two clamping jaws 2232 facing each other are provided with a card slot, and when the two clamping jaws 2232 approach each other, the top cover 100 can be clamped in the card slot of the two clamping jaws 2232. By providing the card slot, the top cover 100 can be effectively prevented from falling off or tilting.

[0075] In order to ensure that the clamping jaw 2232 can smoothly clamp the top cover 100 through the slot, and avoid collision with the top cover 100 during the clamping process, which may cause damage to the edge of the top cover 100, the opening of the slot has a rounded design, so that the top cover 100 can smoothly enter the slot of the clamping jaw 2232, avoiding surface damage caused by hard contact.

[0076] Optionally, two jaws 2232 can be provided in each group of jaw assemblies 223, and the two jaws 2232 in each group of jaw assemblies 223 are spaced apart along the first direction, that is, two groups of jaw assemblies 223 with a total of four jaws 2232 clamp the top cover 100 at the same time, so that the top cover 100 is more stable and the position is more accurate.

[0077] Optionally, the top cover automatic assembly device further includes a first detection module 3, which is used to detect the center distance between the two pole holes 101 of the top cover 100. In this embodiment, the mobile module 1, the battery cell 200 and the first detection module 3 are all arranged on the working platform. When the mobile module 1 drives the feeding module 2 to clamp the top cover 100, it first moves to the top of the first detection module 3. The first detection module 3 detects the center distance between the two pole holes 101 of the top cover 100 and feeds back the detection result to the visual host computer. The visual host computer is provided with calibration parameters. By comparing the center distance between the two pole holes 101 with the calibration parameters and obtaining the first offset, defective products can be discharged.

[0078] The top cover 100 is composed of a cover plate and a conductive block, wherein the pole hole 101 is located on the conductive block, and the conductive block and the cover plate can be welded in advance and then assembled to the pole assembly 201 through the device of the present application, or the conductive block can be placed on the cover plate, and the two are in a loose part state, that is, the two are in an unwelded state and assembled to the pole assembly 201 through the device of the present application. No matter in which state the top cover 100 is assembled to the top cover, once the center distance between the two pole holes 101 is outside the acceptable error range, no matter how the center distance of the pole assembly 201 is corrected, the top cover 100 cannot be installed on the pole assembly 201. Therefore, the top cover 100 received by the first detection module 3 is detected in advance, and defective products can be discharged immediately to avoid assembly between the defective top cover 100 and the pole assembly 201, thereby damaging the pole assembly, and then causing the entire battery cell 200 to be scrapped.

[0079] Specifically, the first detection module 3 includes a first CCD camera 31 and a first light-emitting body 32. The first CCD camera 31 is arranged on a working platform. The first light-emitting body 32 is connected to the connecting plate 2112 of the pressing mounting seat 211 through a plurality of connecting rods 321. The first CCD camera 31 is used to detect the center distance between the two pole holes 101, and the first light-emitting body 32 is used to provide the light source required for detection.

[0080] Furthermore, the top cover automatic assembly device also includes a second detection module 4, which is used to detect the center distance between the two poles and compare it with the calibration parameters to obtain a second offset. Through the first offset and the second offset, the top cover 100 can be accurately corrected.

[0081] Specifically, the second detection module 4 includes a second CCD camera 41 and a second light emitter 42 connected to the mounting plate 141 . The second CCD camera 41 is used to detect the center distance between two poles, and the second light emitter 42 is used to provide the required light source.

[0082] In this embodiment, the first light-emitting body 32 and the second light-emitting body 42 are both annular light sources or coaxial light sources.

[0083] Optionally, the mobile module 1 includes a first module 11, a second module 12, a third module 13 and a rotating module 14, the second module 12 is arranged at the output end of the first module 11, the third module 13 is arranged at the output end of the second module 12, the rotating module 14 is arranged at the output end of the third module 13, the mounting plate 141 is arranged at the output end of the rotating module 14, the first module 11 is used to drive the feeding module 2 to move along the first direction, the second module 12 is used to drive the feeding module 2 to move along the second direction, the third module 13 is used to move the feeding module 2 along the third direction, and the rotating module 14 is used to drive the feeding module 2 to rotate around the third direction. This structure can adjust the position and rotation of the feeding module 2 in three directions, so that the top cover 100 can be positioned more accurately.

[0084] The embodiment of the present invention also provides a top cover automatic assembly method, comprising the following steps:

[0085] S1, the loading module 2 clamps the top cover 100.

[0086] S2, the first detection module 3 detects the center distance between the two pole holes 101 of the top cover 100, and feeds back the detected center distance between the two pole holes 101 of the top cover 100 to the visual host computer, and subtracts it from the calibration parameter pre-stored by the visual host computer to obtain a first offset;

[0087] S3, determine whether the first offset exceeds the preset range. If the first offset exceeds the preset range, it indicates that the top cover 100 is a defective product, and it is discharged and returns to step S1; if the first offset does not exceed the preset range, it indicates that the top cover 100 is a good product, and proceed to the next step S4.

[0088] S4, the second detection module 4 detects the center distance between the two poles, and feeds back the center distance between the two poles to the visual host computer, and subtracts it from the calibration parameter to obtain a second offset.

[0089] S5. The offset value of the assembly of the top cover 100 and the battery cell 200 can be obtained according to the first offset and the second offset, and the moving module 1 is controlled to drive the top cover 100 to perform position correction; that is, the offset values ​​along the first direction and the second direction, as well as the rotation offset value are obtained, the first module 11 drives the top cover 100 to move along the first direction to perform position correction in the first direction, the second module 12 drives the top cover 100 to move along the second direction to perform position correction in the second direction, and the rotating module drives the top cover 100 to rotate around a third direction to perform position correction around the third direction.

[0090] S6, control the moving module 1 to drive the top cover 100 that has been corrected to move to the assembly position, that is, the third module 13 drives the top cover 100 to move to the assembly position along the third direction toward the battery cell 200, and the two pressure rods 212 of the loading module 2 are pressed against the two poles respectively, and the top cover 100 and the battery cell 200 are assembled.

[0091] The automatic top cover assembly method can obtain the offset value of the top cover 100 and the battery cell 200 through the first offset and the second offset, and control the mobile module 1 to perform position correction according to the offset value, so as to make the assembly of the top cover 100 and the battery cell 200 more precise and improve the assembly yield of the top cover 100.

[0092] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A top cover automatic assembly device, used for assembling a top cover (100) onto a battery cell (200), wherein the top cover (100) is provided with two pole holes (101) spaced apart along a first direction, and the battery cell (200) is provided with two groups of pole assemblies (201) corresponding to the two pole holes (101), respectively, characterized in that: The top cover automatic assembly device comprises: Mobile module (1); The feeding module (2) comprises a clamping mechanism (22) and two groups of pressing mechanisms (21) arranged at intervals along a first direction, wherein the clamping mechanism (22) is connected to the output end of the moving module (1) and is used to clamp the top cover (100), and each group of the pressing mechanisms (21) comprises a pressing mounting seat (211) connected to the output end of the moving module (1) and a pressing rod (212) arranged on the pressing mounting seat (211), and the two pressing rods (212) can respectively pass through the two pole holes (101) and can respectively press against the two groups of pole assemblies (201).

2. The automatic top cover assembly device according to claim 1, characterized in that: The pressure rod (212) is slidably connected to the pressing mounting seat (211), and each group of the pressing mechanism (21) further comprises a first elastic member, wherein the first elastic member is used to drive the pressure rod (212) to elastically press against the corresponding pole assembly (201).

3. The automatic top cover assembly device according to claim 1, characterized in that: The clamping jaw mechanism (22) comprises: A clamping jaw driving member (221) is fixedly connected to the output end of the moving module (1); Two groups of anti-collision components (222) are arranged at intervals along the second direction and connected to the output end of the clamping jaw driving member (221); Two groups of clamping jaw assemblies (223) are arranged at intervals along the second direction and are used to clamp the top cover (100); the two groups of clamping jaw assemblies (223) are elastically connected to the two anti-collision assemblies (222) respectively, and the clamping jaw assemblies (223) can be displaced along the third direction and elastically compress the anti-collision assemblies (222); The first direction, the second direction and the third direction are perpendicular to each other.

4. The automatic top cover assembly device according to claim 3, characterized in that: The anti-collision component (222) comprises: An anti-collision plate (2221) is fixedly arranged at the output end of the clamping jaw driving member (221), and the anti-collision plate (2221) is provided with a sliding hole; A sliding rod (2222) is slidably disposed in the sliding hole, and one end of the sliding rod (2222) is limited to the end surface of the anti-collision plate (2221) away from the clamping jaw assembly (223), and the other end is connected to the clamping jaw assembly (223); The second elastic member has two ends that elastically abut against the anti-collision plate (2221) and the clamping jaw assembly (223) respectively.

5. The automatic top cover assembly device according to claim 3, characterized in that: The clamping jaw mechanism (22) further comprises two groups of guide assemblies (224) which are spaced apart along the second direction and connected to the anti-collision assembly (222); the two groups of clamping jaw assemblies (223) are respectively slidably connected to the corresponding two groups of guide assemblies (224).

6. The automatic top cover assembly device according to claim 5, characterized in that: Each set of the guide components (224) comprises: A guide plate (2241) connected to the corresponding anti-collision component (222); A guide rail (2242) and a slider (2243) are slidably connected to each other, wherein one of the guide rail (2242) and the slider (2243) is fixedly connected to the guide plate (2241), and the other is fixedly connected to the corresponding clamping jaw assembly (223).

7. The automatic top cover assembly device according to claim 4, characterized in that: Each group of the clamping jaw assemblies (223) comprises: A clamping claw connecting block (2231) elastically connected to the anti-collision component (222); The clamping jaws (2232) are arranged on the clamping jaw connecting block (2231), and the end surfaces of the clamping jaws (2232) on the two clamping jaw connecting blocks (2231) facing each other are provided with slots, and the top cover (100) can be clamped in the slots.

8. The automatic top cover assembly device according to claim 1, characterized in that: The movable module (1) comprises a first module (11), a second module (12), a third module (13) and a rotating module (14); the second module (12) is arranged at an output end of the first module (11); the third module (13) is arranged at an output end of the second module (12); the rotating module (14) is arranged at an output end of the third module (13); the loading module (2) is arranged at an output end of the rotating module (14); the first module (11) is used to drive the loading module (2) to move along the first direction; the second module (12) is used to drive the loading module (2) to move along the second direction; the third module (13) is used to move the loading module (2) along the third direction; and the rotating module (14) is used to drive the loading module (2) to rotate; The first direction, the second direction and the third direction are perpendicular to each other.

9. The automatic top cover assembly device according to any one of claims 1 to 8, characterized in that: Also includes: A first detection module (3) is used to detect the center distance between the two pole holes (101) and to obtain a first offset by subtracting the center distance from a calibration parameter; The second detection module (4) is used to detect the center distance between the two groups of pole assemblies (201) and to obtain a second offset by subtracting the center distance from the calibration parameter.

10. The automatic assembly method of the top cover is characterized in that: Applicable to the top cover automatic assembly device according to claim 9, the top cover automatic assembly method comprises the following steps: S1, the loading module (2) clamps the top cover (100); S2, a first detection module (3) detects the center distance between the two pole holes (101) of the top cover (100), and subtracts the center distance from the calibration parameter to obtain a first offset; S3, determining whether the first offset exceeds a preset range, if so, ejecting the top cover (100) and returning to step S1, if not, executing step S4; S4, the second detection module (4) detects the center distance between the two pole assemblies (201), and subtracts the center distance from the calibration parameter to obtain a second offset; S5, controlling the moving module (1) to drive the top cover (100) to perform position correction according to the first offset and the second offset; S6, controlling the movable module (1) to drive the top cover (100) that has been corrected to move to the assembly position, so that the two pressure rods (212) of the loading module (2) are pressed against the two pole assemblies (201) respectively, and the top cover (100) and the battery cell (200) are assembled.

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