Battery assembling device

Abstract

The application belongs to the technical field of battery assembly, and discloses a battery assembly device, which comprises a positioning mechanism and a bending mechanism. The battery cell is installed on the positioning mechanism. The bending mechanism comprises a mounting plate and two groups of bending assemblies which are arranged on the mounting plate along the length direction of the battery cell. Each group of the bending assemblies comprises a first driving member and four bending clamps. The four bending clamps are arranged on the output end of the first driving member along the width direction of the battery cell. The first driving member can drive the two bending clamps on the outer side to move towards each other so as to make the two tabs on the outer side of the corresponding group of tabs be folded towards each other. Meanwhile, the first driving member can also drive the two bending clamps in the middle to move away from each other so as to make the two tabs in the middle of the corresponding group of tabs be folded away from each other. The folding of the two groups of tabs is realized simultaneously through the bending mechanism, which improves the assembly efficiency and further assists the subsequent tab pressing and tab welding operations.

Description

Technical Field

[0001] This invention relates to the field of battery assembly technology, and more particularly to a battery assembly apparatus. Background Technology

[0002] A battery typically includes a casing, a cell assembly, and a top cover. The cell assembly includes a cell 100 and structures such as tabs 101, insulating pads, and adapter plates disposed on the cell 100. Figure 1 As shown, along the length of the cell 100, the tabs 101 are divided into two groups, and each group of tabs 101 contains four tabs 101 that are spaced apart along the width of the cell 100. Figure 1 Before welding the tabs 101 of the battery cell assembly shown, the tabs 101 need to be bent so that they fit against the surface of the adapter plate to facilitate subsequent welding operations. However, in the prior art, the assembly device used to assist in welding the battery cell assembly tabs to the adapter plate involves horizontally positioning the battery cell assembly in the assembly device, then welding the tabs to the adapter plate first, and then folding multiple battery cell assemblies to complete the core-joining action. During the core-joining process, the tabs of the battery cell assembly only begin to bend.

[0003] Therefore, existing assembly devices cannot meet the requirements such as Figure 1 The assembly requirements of the battery cell assembly shown require a device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a battery assembly device that improves the quality of electrode welding and the service life of the battery, avoids the space occupied by the electrode, and increases the energy density of the battery.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A battery assembly apparatus, the battery including a cell, the cell having multiple tabs, the multiple tabs being divided into two groups along the length of the cell, each group containing four tabs spaced apart along the width of the cell, the battery assembly apparatus comprising:

[0007] A positioning mechanism for positioning the battery cell;

[0008] A bending mechanism includes a mounting plate and two sets of bending components spaced apart on the mounting plate along the length of the battery cell, wherein the two sets of bending components correspond one-to-one with the two sets of tabs.

[0009] Each bending assembly includes a first driving member and four bending jaws. The first driving member is connected to the mounting plate. The four bending jaws are arranged along the width direction of the battery cell at the output end of the first driving member. The first driving member can drive the two outer bending jaws to move towards each other so that the two outer tabs in the corresponding set of tabs fold towards each other. At the same time, the first driving member can also drive the two middle bending jaws to move away from each other so that the two middle tabs in the corresponding set of tabs fold away from each other.

[0010] As an alternative, the output end of the first driving member is provided with two mounting blocks, and the first driving member can drive the two mounting blocks to move towards or away from each other along the width direction of the battery cell;

[0011] Of the four bending jaws corresponding to each of the first driving components, along the width direction of the battery cell, the two outer bending jaws are respectively mounted on the two mounting blocks, and the two middle bending jaws are respectively mounted on the two mounting blocks.

[0012] As an alternative, the mounting plate is provided with an elastic sliding component, and both first driving members are elastically slidably connected to the mounting plate through the elastic sliding component, so that the first driving members can be displaced along the height direction of the battery cell.

[0013] As an optional embodiment, the elastic sliding component includes:

[0014] A flexible fixing plate is connected to the mounting plate.

[0015] Two sliding plates are spaced apart on the mounting plate along the length direction of the battery cell, and the sliding plates and the mounting plate are slidably connected along the height direction of the battery cell. Both first driving members are mounted on the two sliding plates.

[0016] Two first elastic elements, each corresponding to one of the sliding plates, elastically abut against the elastic fixing plate and the corresponding sliding plate.

[0017] As an optional embodiment, the bending mechanism further includes a pre-separation assembly, the pre-separation assembly comprising:

[0018] The second driving component is connected to the mounting plate;

[0019] The third driving element is located at the output end of the second driving element;

[0020] Two separation blocks are disposed at the output end of the third driving member. The second driving member can drive the third driving member to move the separation blocks toward the battery cell along the height direction of the battery cell. The third driving member can drive the two separation blocks to move away from each other along the length direction of the battery cell, so as to move into the middle two electrodes of the two sets of electrodes respectively.

[0021] As an optional solution, the positioning mechanism includes:

[0022] A fixture frame, wherein a mounting plate for supporting the battery cell is provided inside the fixture frame;

[0023] Two sliding platforms are spaced apart along the width direction of the battery cell and slidably disposed on the fixture frame. The two sliding platforms can move closer to each other or further away from each other.

[0024] Two sets of pressure-holding components are respectively disposed on the two slides, and the pressure-holding components are used to press against the folded tabs.

[0025] As an optional solution, the pressure holding assembly includes a swing plate and a pressure holding plate. The swing plate is mounted on the corresponding slide via a swing rod, and the pressure holding plate is mounted on the corresponding swing plate. The swing plate can drive the pressure holding plate to swing toward the battery cell via the swing rod, so that the pressure holding plate presses against the folded electrode tab.

[0026] As an optional solution, the positioning mechanism further includes a height adjustment component, which is elastically connected to the base plate of the fixture frame. The mounting plate is disposed on the height adjustment component, and the height adjustment component can adjust the height of the mounting plate along the height direction of the battery cell.

[0027] As an optional embodiment, the height adjustment component includes:

[0028] Two spaced-apart adjustment support blocks are elastically connected to the base plate via a second elastic element, and the mounting plate is installed on the two adjustment support blocks;

[0029] Adjusting pressure block and adjusting bolt, wherein the adjusting pressure block is provided with a through hole and presses against the two adjusting support blocks, and the adjusting bolt passes through the through hole and is threadedly connected to the base plate.

[0030] As an optional solution, the positioning mechanism further includes:

[0031] The clamping assembly includes two panels spaced apart along the width direction of the battery cell, the panels being slidably connected to the fixture frame, and the two panels being able to approach each other to press against two sides of the battery cell along its width direction.

[0032] The side alignment assembly includes two movable members spaced apart along the length of the battery cell. The movable members are slidably connected to the fixture frame. The two movable members can approach each other to press against the two sides of the battery cell along its length. The two movable members can also respectively assist in supporting the two sets of tabs.

[0033] The beneficial effects of this invention are:

[0034] This invention provides a battery assembly device. By setting two sets of bending components, each corresponding to one of two sets of tabs, and the first driving component in each bending component can drive the two outer bending claws to move towards each other, so that the two outer tabs in the corresponding set of tabs are folded towards each other. At the same time, it can also drive the two middle bending claws to move away from each other, so that the two middle tabs in the corresponding set of tabs are folded away from each other. This achieves the simultaneous folding of four tabs in the corresponding set of tabs in each bending component, and the folding of four tabs can be completed in one operation. This not only improves the assembly efficiency, but also assists in the subsequent tab clamping and tab welding operations. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the battery cell structure involved in the embodiments of the present invention;

[0036] Figure 2 This is a schematic diagram of the battery assembly device provided in an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the bending mechanism without the pre-separation component involved in the embodiments of the present invention;

[0038] Figure 4 This is a schematic diagram of the bending assembly involved in the embodiments of the present invention;

[0039] Figure 5 This is a schematic diagram of the bending mechanism involved in the embodiments of the present invention;

[0040] Figure 6 This is a schematic diagram of the pre-separation component involved in the embodiments of the present invention;

[0041] Figure 7 This is a schematic diagram of the fixture frame involved in the embodiments of the present invention;

[0042] Figure 8 This is a schematic diagram of the slide and pressure holding assembly involved in the embodiments of the present invention;

[0043] Figure 9 This is a schematic diagram of the height adjustment component involved in an embodiment of the present invention;

[0044] Figure 10 This is a schematic diagram of the side alignment component involved in the embodiments of the present invention;

[0045] Figure 11 This is a schematic diagram of the lifting assembly involved in the embodiments of the present invention.

[0046] In the picture:

[0047] 100. Battery cell; 101. Electrode tab;

[0048] 1. Positioning mechanism; 11. Fixture frame; 111. Mounting plate; 112. Base plate; 1121. Buffer protrusion; 113. Side beam; 12. Slide table; 13. Pressure holding assembly; 131. Swing plate; 132. Pressure holding plate; 133. Swing rod; 14. Positioning component; 15. Height adjustment assembly; 151. Adjusting pressure block; 152. Adjusting bolt; 153. Adjusting support block; 154. Second elastic element; 16. Clamping assembly; 161. Panel; 162. Guide shaft; 17. Side alignment assembly; 171. Moving component; 1711. Mounting base; 1712. Side baffle; 1713. Top insert; 172. Follow-up tie rod; 1721. Buffer bolt; 173. Limit adjustment block; 18. Lifting assembly; 181. Large plate; 182. Guide column; 183. Linear bearing;

[0049] 2. Bending mechanism; 21. Mounting plate; 22. Bending assembly; 221. First driving member; 222. Bending gripper; 2221. Vertical connecting part; 2222. Horizontal extension part; 2223. Bending part; 223. Mounting block; 23. Elastic sliding assembly; 231. Elastic fixing plate; 2311. Protrusion; 232. Sliding plate; 233. First elastic element; 234. Screw; 24. Pre-separation assembly; 241. Second driving member; 242. Third driving member; 243. Separation block; 2431. Mounting part; 2432. Separation part; 2432a. Sharp corner part; 244. Connecting block. Detailed Implementation

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

[0051] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0054] like Figures 1-11 As shown, this embodiment of the invention provides a battery assembly apparatus for assembling batteries. The battery includes a cell 100, a casing, and a top cover. The cell 100 is disposed within the casing, and the top cover is used to encapsulate the casing. An insulating pad and an adapter piece are sequentially disposed on the cell 100, and a tab 101 penetrating the insulating pad is also disposed on the cell 100. Along the length direction of the cell 100 (i.e., the Y-axis direction in the figure), multiple tabs 101 are divided into two groups, and each group of tabs 101 contains four tabs 101 spaced apart along the width direction of the cell 100 (i.e., the X-axis direction in the figure).

[0055] Specifically, the battery assembly device includes a positioning mechanism 1 and a bending mechanism 2. The battery cell 100 is mounted on the positioning mechanism 1, which is used to position the battery cell 100. The bending mechanism 2 includes a mounting plate 21 and two sets of bending components 22 spaced apart on the mounting plate 21 along the length of the battery cell 100. The two sets of bending components 22 correspond one-to-one with the two sets of tabs 101. Each set of bending components 22 includes a first driving member 221 and four bending claws 222. The first driving member 221 is fixedly connected to the mounting plate 21. The four bending claws 222 are arranged at the output end of the first driving member 221 along the width of the battery cell 100. The first driving member 221 can drive the two outer bending claws 222 to move towards each other so that the two outer tabs 101 in the corresponding set of tabs 101 fold towards each other. At the same time, the first driving member 221 can also drive the two bending claws 222 in the middle to move away from each other so that the two middle tabs 101 in the corresponding set of tabs 101 fold away from each other. The aforementioned tabs 101 can be folded over and pressed against the adapter plate to facilitate welding of the tabs 101 and the adapter plate.

[0056] The battery assembly device uses two sets of bending components 22, each corresponding to one of the two sets of tabs 101. The first driving member 221 in each bending component 22 can drive the two outer bending jaws 222 to move towards each other, causing the two outer tabs 101 in the corresponding set to fold towards each other. Simultaneously, it can also drive the two middle bending jaws 222 to move away from each other, causing the two middle tabs 101 in the corresponding set to fold away from each other. This achieves the folding of all four tabs 101 in each set by the bending component 22. For ease of explanation, the four tabs 101 in each set can be described according to the position of the corresponding adapter piece. The cells are divided into two pairs, and the four tabs 101 are numbered sequentially along the width of the cell 100 as tab 1, tab 2, tab 3, and tab 4. Tab 1 and tab 2 form one pair, and tab 3 and tab 4 form another pair. Tab 1 and tab 2 are folded towards the same side of the adapter plate under the action of the corresponding bending component 22, and tab 3 and tab 4 are folded towards the other side of the adapter plate under the action of the corresponding bending component 22. This not only improves assembly efficiency but also assists in subsequent tab pressing and tab welding operations.

[0057] Furthermore, referring to Figures 3-4The output end of the first driving member 221 is provided with two mounting blocks 223. The first driving member 221 can drive the two mounting blocks 223 to move towards or away from each other along the width direction of the cell 100. Among the four bending claws 222 corresponding to each first driving member 221, the two outer bending claws 222 along the width direction of the cell 100 are respectively mounted on the two mounting blocks 223, and the two middle bending claws 222 are respectively mounted on the two mounting blocks 223. This structure drives the two mounting blocks 223 to move towards or away from each other through the first driving member 221, so as to drive the bending claws 222 to move simultaneously, so as to bend the corresponding tabs 101.

[0058] For example, the first bending claw 222 and the third bending claw 222, which are sequentially distributed along the width direction of the cell 100, are both mounted on a mounting block 223, and the second bending claw 222 and the fourth bending claw 222 are both mounted on another mounting block 223. When the first driving member 221 drives the two mounting blocks 223 to move towards each other, the first bending claw 222 and the third bending claw 222 respectively cause the first electrode tab 101 and the third electrode tab 101 to fold to one side, and the second bending claw 222 and the fourth bending claw 222 respectively cause the second electrode tab 101 and the fourth electrode tab 101 to fold towards the other side, so as to realize that the first electrode tab 101 and the second electrode tab 101 fold towards each other, and the third electrode tab 101 and the fourth electrode tab 101 fold towards each other. It should be noted that the order of the first, second, third, and fourth bending claws 222, distributed sequentially along the width direction of the battery cell 100, can be either towards the mounting plate 21 or away from it. In this structure, the first driving member 221 drives the two mounting blocks 223 to move closer to each other (i.e., towards each other) or further away from each other (i.e., in opposite directions). This achieves the following: one mounting block 223 drives the first and third bending claws 222 to move along the width direction of the battery cell 100, while the other mounting block 223 drives the second and fourth bending claws 222 to move in the opposite direction along the width direction of the battery cell 100. The first and fourth bending claws 222 are the two outer bending claws 222, and the second and third bending claws 222 are the two middle bending claws 222. The structure is ingeniously designed and simple, avoiding the need for multiple drive components to drive the bending gripper 222, thus saving space.

[0059] Of course, in other embodiments, the second bending gripper 222 and the third bending gripper 222 can also be arranged side by side without misalignment. The above-mentioned staggered arrangement of the second bending gripper 222 and the third bending gripper 222 is to make the bending gripper 222 have a larger area to achieve a better folding effect.

[0060] Optionally, the first drive element 221 may be a finger cylinder.

[0061] Optionally, the lower part of the facing sides of the first and fourth bending jaws 222 are chamfered. By setting the chamfer, the probability of the bending jaws 222 pressing against the tab 101 can be reduced, thus improving the fault tolerance rate. The second and third bending jaws 222 each include a vertical connecting part 2221, a horizontal extension part 2222, and a bending part 2223. The vertical connecting part 2221 and the bending part 2223 are distributed in parallel. The horizontal extension part 2222 is vertically disposed between the vertical connecting part 2221 and the bending part 2223. The vertical connecting part 2221 is connected to the mounting block 223. The bending part 2223 is used to bend the tab 101. Further, in order to reduce the probability of the bending part 2223 pressing against the tab 101, the cross-section of the bending part 2223 is set as a triangle with a pointed bottom.

[0062] Optionally, such as Figure 5 As shown, an elastic sliding assembly 23 is provided on the mounting plate 21. Both first driving members 221 are elastically slidably connected to the mounting plate 21 through the elastic sliding assembly 23. When the bending gripper 222 collides with other components, the bending gripper 222 can transmit the impact force to the elastic sliding assembly 23. The elastic sliding assembly 23 can cause the first driving member 221 to be displaced along the height direction of the cell 100 (i.e., the Z-axis direction in the figure) to avoid damaging the components.

[0063] Specifically, the elastic sliding assembly 23 includes an elastic fixing plate 231, two sliding plates 232, and two first elastic members 233 corresponding to each sliding plate 232. The elastic fixing plate 231 is connected to the mounting plate 21. The two sliding plates 232 are spaced apart on the mounting plate 21 along the length of the battery cell 100, and the sliding plates 232 and the mounting plate 21 are slidably connected along the height of the battery cell 100. The first elastic members 233 elastically abut against the elastic fixing plate 231 and the corresponding sliding plate 232. Two first driving members 221 are respectively mounted on the two sliding plates 232. This structure achieves a flexible connection by sliding the sliding plates 232 to the mounting plate 21, and the first elastic members 233 (which can be selected as springs or multiple disc springs stacked together) elastically abut against the sliding plates 232 and the elastic fixing plate 231. This allows the bending gripper 222 to squeeze the first elastic members 233 through the sliding plates 232 when an impact occurs, thus avoiding damage to the components.

[0064] More specifically, the elastic fixing plate 231 is provided with protrusions 2311 spaced apart along the length direction of the battery cell 100. The protrusions 2311 are provided with through holes, and two screws 234 are respectively inserted into the two through holes. The two screws 234 are respectively connected to the two sliding plates 232. The first elastic member 233 is sleeved on the corresponding screw 234 and elastically abuts against the corresponding protrusion 2311 and the sliding plate 232.

[0065] In actual production, the distance between the two middle pole tabs 101 in each set of pole tabs 101 is relatively close, and there is a probability that the two pole tabs 101 will tilt towards each other. In order to enable the bending gripper 222 located in the middle to smoothly extend between the two middle pole tabs 101, the bending mechanism 2 also includes a pre-separation component 24, which can pre-separate the two pole tabs 101 that are tilted towards each other. Specifically, as shown in the figure... Figures 5-6 As shown, the pre-separation assembly 24 includes a second drive member 241, a third drive member 242, and two separation blocks 243. The second drive member 241 is connected to the mounting plate 21. The third drive member 242 is disposed at the output end of the second drive member 241. The second drive member 241 can drive the third drive member 242 to reciprocate along the height direction of the cell 100. The two separation blocks 243 are disposed at the output end of the third drive member 242. The third drive member 242 can drive the two separation blocks 243 to move away from or towards each other along the length direction of the cell 100. When the two tabs 101 located in the middle are tilted towards each other, the second drive member 241 drives the third drive member 242 to move the two separation blocks 243 toward the cell 100, so that the two separation blocks 243 extend between the two sets of tabs 101. The third drive member 242 then drives the two separation blocks 243 away from each other, so that the two separation blocks 243 move into the two tabs 101 located in the middle of the two sets of tabs 101 respectively. By moving the separation blocks 243 into the two tabs 101 located in the middle, the separation blocks 243 can straighten the two tabs 101 that are tilted towards each other, so that the bending jaw 222 can be smoothly inserted between the two tabs 101 located in the middle, so as to ensure the normal bending operation of the tabs 101.

[0066] Optionally, after the two separating blocks 243 straighten the two tilted tabs 101, the second driving member 241 drives the third driving member 242 to move further downward, so that the two separating blocks 243 on the third driving member 242 press the adapter piece on the cell 100 downward, assisting the bending mechanism 2 in bending the tabs 101 and improving the stability of the bending action of the tabs 101.

[0067] Optionally, the second drive unit 241 can be selected as a dual-axis cylinder or a dual-axis hydraulic cylinder; the third drive unit 242 can be selected as a finger cylinder.

[0068] Optionally, the separating block 243 includes an installation part 2431 and a separating part 2432 connected to each other. The output end of the third drive member 242 is provided with a connecting block 244. The installation part 2431 is connected to the connecting block 244. The separating part 2432 is located at the lower end of the installation part 2431 away from the connecting block 244. Both sides of the two separating parts 2432 are provided with sharp corners 2432a. That is, the sharp corners 2432a gradually increase in size from the two sides of the two separating parts 2432 toward the middle of the two separating parts 2432. Through this structural design, the separating part 2432 moves more smoothly between the two tabs 101 located in the middle, avoiding damage to the tabs 101 by the separating part 2432.

[0069] Optionally, the material of the separator 243 is set to self-lubricating engineering plastic (including but not limited to Teflon, nylon PA6, PA66, POM, PEEK, etc.) or metal material with a smooth coating (including but not limited to Teflon, ceramic plating, silver plating, etc.).

[0070] Specifically, such as Figures 7-11 As shown, the positioning mechanism 1 includes a fixture frame 11 and two sets of pressure-holding components 13. The fixture frame 11 is provided with a mounting plate 111 and two slides 12 spaced apart along the width direction of the battery cell 100. The slides 12 are slidably connected to the fixture frame 11. The two sets of pressure-holding components 13 are respectively disposed on the two slides 12. The two slides 12 can drive the two sets of pressure-holding components 13 to move closer to each other and further away from each other. The battery cell 100 is disposed on the mounting plate 111. When the tab 101 is bent, the two slides 12 drive the two sets of pressure-holding components 13 to move toward the battery cell 100 (i.e., the two slides 12 move closer to each other). The pressure-holding components 13 can press against the bent tab 101 to ensure that the tab 101 and the adapter plate remain in contact, thereby ensuring the welding quality.

[0071] Furthermore, referring to Figure 8 The pressure holding assembly 13 includes a swing plate 131 and a pressure holding plate 132. The swing plate 131 is connected to the corresponding slide table 12 via a swing rod 133. The pressure holding plate 132 is connected to the swing plate 131. When the tab 101 is bent, the slide table 12 drives the pressure holding assembly 13 to move toward the cell 100. The first external drive mechanism drives the swing plate 131 to move toward the cell 100. The swing plate 131 can swing via the swing rod 133, thereby enabling the swing plate 131 to drive the pressure holding plate 132 to swing and press against the bent tab 101.

[0072] In this embodiment, two swing rods 133 are respectively provided at both ends of the swing plate 131.

[0073] Optionally, the positioning mechanism 1 also includes two positioning elements 14 respectively disposed on the two slides 12. When the two slides 12 approach each other, the positioning elements 14 located on the two slides 12 can clamp the pole on the adapter piece, thereby achieving accurate positioning of the adapter piece during welding.

[0074] Optionally, refer to Figure 9 The positioning mechanism 1 also includes a height adjustment component 15, a mounting plate 111 is disposed on the height adjustment component 15, and the battery cell 100 is supported on the mounting plate 111. The height adjustment component 15 is elastically connected to the base plate 112 of the fixture frame 11, and the height adjustment component 15 can adjust the height of the mounting plate 111 along the height direction of the battery cell 100, thereby adjusting the height of the battery cell 100. When the battery cell 100 is impacted, the height adjustment component 15 can provide elastic buffer to prevent damage to the battery cell 100.

[0075] Specifically, the height adjustment assembly 15 includes an adjustment block 151, an adjustment bolt 152, and two spaced-apart adjustment support blocks 153. Both adjustment support blocks 153 are elastically connected to the base plate 112 via multiple second elastic elements 154. The adjustment block 151 has a through hole and presses against the two adjustment support blocks 153. The adjustment bolt 152 passes through the through hole and is threadedly connected to the base plate 112. This structure allows the adjustment block 151 to press down on the adjustment support blocks 153 by tightening the adjustment bolt 152, or the adjustment support blocks 153 to move upward under the elastic force of the second elastic elements 154, thereby enabling the adjustment support blocks 153 to raise or lower the mounting plate 111, thus adjusting the height of the battery cell 100.

[0076] Optionally, refer to Figure 7 The positioning mechanism 1 also includes a clamping assembly 16, which includes two panels 161 spaced apart along the width direction of the battery cell 100. Each of the two panels 161 has a guide shaft 162 at one end facing away from each other. The panels 161 are slidably connected to the side beam 113 of the fixture frame 11 through the guide shaft 162. The two panels 161 can approach each other under the action of the third elastic member to clamp the battery cell 100.

[0077] Optionally, refer to Figure 10The positioning mechanism 1 also includes a side alignment component 17, which includes two movable members 171 spaced apart along the length of the battery cell 100. Both movable members 171 are slidably connected to the base plate 112 via a guide rail slider structure. The two movable members 171 can move closer to or further away from each other along the length of the battery cell 100. Specifically, the movable member 171 includes a mounting base 1711, a side baffle 1712, and a top insert 1713. The mounting base 1711 is slidably connected to the base plate 112 via a guide rail slider structure. The side baffle 1712 is disposed on the inner side of the mounting base 1711. The top insert 1713 is provided with five insertion teeth spaced apart along the width of the battery cell 100, and the top insert 1713 is disposed at the top of the mounting base 1711. After the battery cell 100 is placed on the mounting plate 111, the second external drive mechanism can drive the two moving parts 171 to move closer to each other. The side baffles 1712 on the two mounting seats 1711 abut against the battery cell 100. The teeth of the top inserts 1713 on the two mounting seats 1711 are inserted into the two sets of tabs 101 respectively. Any tab 101 in each set of tabs 101 can be inserted between any two teeth on the corresponding top insert 1713, so that the top insert 1713 can provide auxiliary support for the tab 101 and reduce the probability of the tab 101 tilting.

[0078] Optionally, both the second elastic element 154 and the third elastic element can be selected as springs.

[0079] In this embodiment, two follower rods 172 corresponding to the moving parts 171 are provided below the base plate 112. The follower rods 172 are fixedly connected to the mounting bases 1711 of the corresponding moving parts 171. The second external drive mechanism can drive the follower rods 172 to move, so as to drive the moving parts 171 to move.

[0080] Optionally, the follower rod 172 is provided with a buffer bolt 1721, and the base plate 112 is provided with buffer protrusions 1121 on both sides along the width direction of the battery cell 100. When the follower rod 172 is driven to move by the second external drive mechanism, the buffer bolt 1721 can abut against the buffer protrusions 1121 to achieve the positioning buffer of the moving part 171.

[0081] To prevent the moving part 171 from sliding arbitrarily when the positioning mechanism 1 moves, the side alignment assembly 17 also includes two limit adjustment blocks 173 corresponding to the two moving parts 171 respectively. The limit adjustment blocks 173 are set on the base plate 112 and elastically abut against the corresponding mounting base 1711, so that the moving part 171 has damping.

[0082] Reference Figure 11The positioning mechanism 1 also includes a lifting assembly 18, which includes a large plate 181 and four guide posts 182 disposed on the large plate 181. The bottom plate 112 of the fixture frame 11 is provided with linear bearings 183 corresponding to the four guide posts 182. The four guide posts 182 are slidably connected to the four linear bearings 183 respectively. The fixture frame 11 can move up and down relative to the large plate 181 through the guide posts 182. That is, when the fixture frame 11 drives the battery cell 100 to move upward, the bending gripper 222 can extend into the root of the tab 101 to achieve the bending gripper 222 folding the tab 101.

[0083] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A battery assembly apparatus, the battery comprising a cell (100), wherein the cell (100) is provided with a plurality of tabs (101), the plurality of tabs (101) being divided into two groups along the length direction of the cell (100), each group of tabs (101) comprising four tabs (101) spaced apart along the width direction of the cell (100), characterized in that, The battery assembly device includes: Positioning mechanism (1) for positioning the battery cell (100); The bending mechanism (2) includes a mounting plate (21) and two sets of bending components (22) spaced apart on the mounting plate (21) along the length direction of the battery cell (100). The two sets of bending components (22) correspond one-to-one with the two sets of electrode tabs (101). Each bending assembly (22) includes a first driving member (221) and four bending jaws (222). The first driving member (221) is connected to the mounting plate (21). The four bending jaws (222) are arranged at the output end of the first driving member (221) along the width direction of the battery cell (100). The first driving member (221) can drive the two bending jaws (222) located on the outer side to move towards each other so that the two outer tabs (101) in the corresponding set of tabs (101) fold towards each other. At the same time, the first driving member (221) can also drive the two bending jaws (222) located in the middle to move away from each other so that the two middle tabs (101) in the corresponding set of tabs (101) fold away from each other.

2. The battery assembly apparatus according to claim 1, characterized in that, The output end of the first driving member (221) is provided with two mounting blocks (223), and the first driving member (221) can drive the two mounting blocks (223) to move towards or away from each other along the width direction of the cell (100); Of the four bending jaws (222) corresponding to each of the first drive members (221), the two outer bending jaws (222) along the width direction of the battery cell (100) are respectively mounted on the two mounting blocks (223), and the two middle bending jaws (222) are respectively mounted on the two mounting blocks (223).

3. The battery assembly apparatus according to claim 1, characterized in that, The mounting plate (21) is provided with an elastic sliding component (23), and the two first driving members (221) are elastically slidably connected to the mounting plate (21) through the elastic sliding component (23) so that the first driving member (221) can be displaced along the height direction of the cell (100).

4. The battery assembly apparatus according to claim 3, characterized in that, The elastic sliding component (23) includes: The elastic fixing plate (231) is connected to the mounting plate (21); Two sliding plates (232) are spaced apart on the mounting plate (21) along the length direction of the battery cell (100), and the sliding plates (232) and the mounting plate (21) are slidably connected along the height direction of the battery cell (100). Two first driving members (221) are mounted on the two sliding plates (232). Two first elastic elements (233) are corresponding one-to-one with the sliding plate (232), and the first elastic elements (233) elastically abut against the elastic fixing plate (231) and the corresponding sliding plate (232).

5. The battery assembly apparatus according to claim 1, characterized in that, The bending mechanism (2) further includes a pre-separation component (24), which comprises: The second driving component (241) is connected to the mounting plate (21); The third driving element (242) is disposed at the output end of the second driving element (241); Two separation blocks (243) are disposed at the output end of the third driving member (242). The second driving member (241) can drive the third driving member (242) to move the separation blocks (243) toward the battery cell (100) along the height direction. The third driving member (242) can drive the two separation blocks (243) to move away from each other along the length direction of the battery cell (100) so as to move into the middle of the two sets of electrodes (101).

6. The battery assembly apparatus according to any one of claims 1-5, characterized in that, The positioning mechanism (1) includes: A fixture frame (11) is provided inside which a mounting plate (111) is provided for supporting the battery cell (100); Two slides (12) are spaced apart along the width direction of the battery cell (100) and slidably disposed on the fixture frame (11). The two slides (12) can move closer to each other or further away from each other. Two sets of pressure-holding components (13) are respectively disposed on the two slides (12), and the pressure-holding components (13) are used to press against the folded tabs (101).

7. The battery assembly apparatus according to claim 6, characterized in that, The pressure holding assembly (13) includes a swing plate (131) and a pressure holding plate (132). The swing plate (131) is mounted on the corresponding slide table (12) via a swing rod (133). The pressure holding plate (132) is mounted on the corresponding swing plate (131). The swing plate (131) can drive the pressure holding plate (132) to swing toward the battery cell (100) via the swing rod (133), so that the pressure holding plate (132) presses against the folded tab (101).

8. The battery assembly apparatus according to claim 6, characterized in that, The positioning mechanism (1) further includes a height adjustment component (15), which is elastically connected to the base plate (112) of the fixture frame (11). The mounting plate (111) is disposed on the height adjustment component (15) and the height adjustment component (15) can adjust the height of the mounting plate (111) along the height direction of the battery cell (100).

9. The battery assembly apparatus according to claim 8, characterized in that, The height adjustment component (15) includes: Two spaced-apart adjustment support blocks (153) are elastically connected to the base plate (112) via a second elastic element (154), and the mounting plate (111) is mounted on the two adjustment support blocks (153). Adjusting pressure block (151) and adjusting bolt (152), the adjusting pressure block (151) is provided with a through hole and presses against the two adjusting support blocks (153), the adjusting bolt (152) passes through the through hole and is threadedly connected to the base plate (112).

10. The battery assembly apparatus according to claim 6, characterized in that, The positioning mechanism (1) further includes: The clamping assembly (16) includes two panels (161) spaced apart along the width direction of the battery cell (100), the panels (161) being slidably connected to the fixture frame (11), and the two panels (161) being able to approach each other to press against two sides of the battery cell (100) along its width direction. The side alignment assembly (17) includes two movable members (171) spaced apart along the length of the battery cell (100). The movable members (171) are slidably connected to the fixture frame (11). The two movable members (171) can approach each other to press against the two sides of the battery cell (100) along its length. The two movable members (171) can also assist in supporting the two sets of tabs (101) respectively.

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