Battery assembling device

Abstract

The invention belongs to the technical field of battery assembly, and discloses a battery assembly device which comprises a positioning mechanism and a bending mechanism. And the battery cell is mounted on the positioning mechanism. The bending mechanism comprises a mounting plate and two bending assemblies which are arranged on the mounting plate at intervals in the length direction of the battery cell, each bending assembly comprises a first driving part and four bending clamping jaws, and the four bending clamping jaws are arranged at the output end of the first driving part in the width direction of the battery cell; the first driving piece can drive the two bending clamping jaws on the outer side to move oppositely so as to enable the two tabs, located on the outer side, in the corresponding group of tabs to be turned over oppositely, and meanwhile, the first driving piece can also drive the two bending clamping jaws located in the middle to move oppositely so as to enable the two tabs, located in the middle, in the corresponding group of tabs to be turned over oppositely. And the two groups of tabs are folded at the same time through the bending mechanism, so that the assembly efficiency is improved, and the subsequent tab pressing and tab welding operation is assisted.

Description

Technical Field

[0001] The present invention relates to the technical field of battery assembly, and in particular to a battery assembly device. Background Art

[0002] The battery generally includes a shell, a battery cell assembly and a top cover. The battery cell assembly includes a battery cell 100 and a tab 101, an insulating gasket, a switching plate and other structures arranged on the battery cell 100. Figure 1 As shown, along the length direction of the battery cell 100 , the pole tabs 101 are divided into two groups, and each group of pole tabs 101 includes four pole tabs 101 spaced apart along the width direction of the battery cell 100 . Figure 1 The pole ear 101 of the cell assembly shown needs to be bent before being welded with the adapter, so that the pole ear 101 fits the surface of the adapter to meet the subsequent welding operation. However, in the prior art, the assembly device for assisting the welding of the pole ear of the cell assembly with the adapter is to horizontally position the cell assembly in the assembly device, and then complete the welding of the pole ear with the adapter, and then fold the multiple cell assemblies to complete the core closing action. During the core closing process, the pole ear of the cell assembly begins to bend.

[0003] Therefore, the assembly device in the prior art cannot meet the requirements of 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 object of the present invention is to provide a battery assembly device, which is beneficial to improving the welding quality of the pole tabs and the service life of the battery, and avoids the pole tabs occupying space, thereby improving the energy density of the battery.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A battery assembly device, wherein the battery comprises a battery cell, wherein the battery cell is provided with a plurality of pole tabs, wherein the plurality of pole tabs are divided into two groups along the length direction of the battery cell, and each group of the pole tabs comprises four pole tabs spaced apart along the width direction of the battery cell, and the battery assembly device comprises:

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

[0008] A bending mechanism, comprising a mounting plate and two sets of bending components spaced apart on the mounting plate along the length direction of the battery cell, wherein the two sets of bending components correspond to the two sets of tabs respectively;

[0009] Each group of the bending assemblies 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 at 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 jaws located on the outside to move toward each other so that the two pole ears located on the outside of the corresponding group of pole ears are folded toward each other, and the first driving member can also drive the two bending jaws located in the middle to move away from each other so that the two pole ears located in the middle of the corresponding group of pole ears are folded away from each other.

[0010] As an optional solution, two mounting blocks are provided at the output end of the first driving member, and the first driving member can drive the two mounting blocks to move toward or away from each other along the width direction of the battery core;

[0011] Among the four bending jaws corresponding to each of the first driving members, along the width direction of the battery core, the two bending jaws located on the outer sides are respectively installed on the two mounting blocks, and the two bending jaws located in the middle are respectively installed on the two mounting blocks.

[0012] As an optional solution, an elastic sliding component is provided on the mounting plate, and the two first driving members are elastically slidably connected to the mounting plate via the elastic sliding component, so that the first driving members can be displaced along the height direction of the battery core.

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

[0014] An elastic fixing plate connected to the mounting plate;

[0015] Two sliding plates are arranged on the mounting plate at intervals along the length direction of the battery core, and the sliding plates are slidably connected to the mounting plate along the height direction of the battery core, and the two first driving members are both installed on the two sliding plates;

[0016] Two first elastic members corresponding to the sliding plates one by one, wherein the first elastic members are elastically abutted between the elastic fixing plate and the corresponding sliding plate.

[0017] As an optional solution, the bending mechanism further includes a pre-separation component, and the pre-separation component includes:

[0018] A second driving member connected to the mounting plate;

[0019] a third driving member, disposed at an output end of the second driving member;

[0020] Two separation blocks are arranged at the output end of the third driving member. The second driving member can drive the third driving member to drive the separation blocks to move 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 respectively into between the two pole ears located in the middle of the two groups of pole ears.

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

[0022] A fixture frame, wherein a placement plate for supporting the battery cell is arranged in the fixture frame;

[0023] Two slides are spaced apart and slidably arranged on the jig frame along the width direction of the battery cell, and the two slides can approach or move away from each other;

[0024] Two groups of pressure-maintaining components are respectively arranged on the two slides, and the pressure-maintaining components are used to press against the folded pole ears.

[0025] As an optional solution, the pressure maintaining assembly includes a swinging plate and a pressure maintaining plate, the swinging plate is arranged on the corresponding slide through a swing rod, and the pressure maintaining plate is arranged on the corresponding swinging plate, and the swinging plate can drive the pressure maintaining plate to swing toward the battery cell through the swing rod so that the pressure maintaining plate is pressed against the folded pole ear.

[0026] As an optional solution, the positioning mechanism also includes a height adjustment component, which is elastically connected to the bottom plate of the fixture frame, and the placement plate is arranged on the height adjustment component. Along the height direction of the battery cell, the height adjustment component can adjust the height of the placement plate.

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

[0028] Two adjustable support blocks are spaced apart from each other, wherein the adjustable support blocks are elastically connected to the bottom plate via a second elastic member, and the placement plate is mounted on the two adjustable support blocks;

[0029] An adjusting pressure block and an adjusting bolt, wherein the adjusting pressure block is provided with a through hole and is pressed against the two adjusting support blocks, and the adjusting bolt is passed through the through hole and is threadedly connected to the bottom plate.

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

[0031] A pressing assembly, comprising two panels spaced apart along the width direction of the battery cell, the panels being slidably connected to the jig frame, and the two panels being able to approach each other to press against two side surfaces of the battery cell along its width direction;

[0032] The side alignment component includes two movable parts spaced apart along the length direction of the battery cell, the movable parts are slidably connected to the jig frame, the two movable parts can approach each other to press against the two side surfaces of the battery cell along its length direction, and the two movable parts can also respectively assist in supporting the two groups of pole ears.

[0033] Beneficial effects of the present invention:

[0034] The present invention provides a battery assembly device, which is provided with two groups of bending components corresponding to the two groups of pole ears respectively, and the first driving member in each group of bending components can drive the two bending jaws located on the outside to move toward each other so that the two pole ears located on the outside of the corresponding group of pole ears are folded toward each other, and can also drive the two bending jaws located in the middle to move back to each other so that the two pole ears located in the middle of the corresponding group of pole ears are folded back to each other, so that each group of bending components can fold the four pole ears in the corresponding group of pole ears at the same time, and the folding of the four pole ears can be completed in one action, which not only improves the assembly efficiency, but also assists the subsequent pole ear pressing and pole ear welding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic structural diagram of a battery cell involved in an embodiment of the present invention;

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

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

[0038] Figure 4 is a schematic structural diagram of a bending assembly involved in an embodiment of the present invention;

[0039] Figure 5 is a structural schematic diagram of a bending mechanism involved in an embodiment of the present invention;

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

[0041] Figure 7 is a schematic structural diagram of a fixture frame involved in an embodiment of the present invention;

[0042] Figure 8 It is a structural schematic diagram of a slide table and a pressure-maintaining assembly involved in an embodiment of the present invention;

[0043] Fig. 9 is a schematic structural diagram of a height adjustment assembly involved in an embodiment of the present invention;

[0044] Fig.10 is a schematic structural diagram of a side alignment component involved in an embodiment of the present invention;

[0045] Fig.11 It is a structural schematic diagram of a lifting assembly involved in an embodiment of the present invention.

[0046] In the figure:

[0047] 100, battery cell; 101, tab;

[0048] 1. Positioning mechanism; 11. Fixture frame; 111. Placement plate; 112. Bottom plate; 1121. Buffering protrusion; 113. Side beam; 12. Slide; 13. Pressure-maintaining assembly; 131. Swinging plate; 132. Pressure-maintaining plate; 133. Swing rod; 14. Positioning member; 15. Height adjustment assembly; 151. Adjustment pressure block; 152. Adjustment bolt; 153. Adjustment support block; 154. Second elastic member; 16. Clamping assembly; 161. Panel; 162. Guide shaft; 17. Side alignment assembly; 171. Moving member; 1711. Mounting seat; 1712. Side baffle; 1713. Top insert; 172. Follow-up rod; 1721. Buffering 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 jaw; 2221. Vertical connecting portion; 2222. Horizontal extending portion; 2223. Bending portion; 223. Mounting block; 23. Elastic sliding assembly; 231. Elastic fixing plate; 2311. Protruding portion; 232. Sliding plate; 233. First elastic member; 234. Screw; 24. Pre-separation assembly; 241. Second driving member; 242. Third driving member; 243. Separation block; 2431. Mounting portion; 2432. Separation portion; 2432a. Sharp corner portion; 244. Connecting block. 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 1-Figure 11 As shown, an embodiment of the present invention provides a battery assembly device for assembling a battery. The battery includes a battery cell 100, a shell and a top cover, the battery cell 100 is arranged in the shell, and the top cover is used to encapsulate the shell. An insulating gasket and a adapter are sequentially arranged on the battery cell 100, and a pole ear 101 penetrating the insulating gasket is also arranged on the battery cell 100. Along the length direction of the battery cell 100 (i.e., the Y-axis direction in the figure), the plurality of pole ears 101 are divided into two groups, and each group of pole ears 101 includes four pole ears 101 spaced apart along the width direction of the battery 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, and the positioning mechanism 1 is used to position the battery cell 100. The bending mechanism 2 includes a mounting plate 21 and two groups of bending components 22 arranged on the mounting plate 21 at intervals along the length direction of the battery cell 100. The two groups of bending components 22 correspond to the two groups of pole ears 101 one by one, respectively. Each group of bending components 22 includes a first driving member 221 and four bending jaws 222. The first driving member 221 is fixedly 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 outer bending jaws 222 to move toward each other so that the two outer pole ears 101 in the corresponding group of pole ears 101 are folded toward each other. At the same time, the first driving member 221 can also drive the two bending jaws 222 in the middle to move away from each other so that the two pole ears 101 in the middle of the corresponding group of pole ears 101 are folded away from each other. After being folded, the tabs 101 can be pressed against the adapter plate to facilitate welding between the tabs 101 and the adapter plate.

[0056] The battery assembly device is distributed in one-to-one correspondence with the two groups of pole ears 101 through two groups of bending components 22, and the first driving member 221 in each group of bending components 22 can drive the two bending jaws 222 located on the outside to move toward each other so that the two pole ears 101 located on the outside of the corresponding group of pole ears 101 are folded toward each other, and at the same time, the two bending jaws 222 located in the middle can be driven to move back to back so that the two pole ears 101 located in the middle of the corresponding group of pole ears 101 are folded back to back, so that each group of bending components 22 can fold the four pole ears 101 in the corresponding group of pole ears 101. For the convenience of explanation, the four pole ears 101 in each group of pole ears 101 can be arranged according to the position of the corresponding adapter sheet. Divided into two pairs, the four pole ears 101 are numbered in sequence along the width direction of the battery cell 100, and are divided into pole ear No. 101, pole ear No. 2 101, pole ear No. 3 101 and pole ear No. 4 101. The pole ear No. 101 and the pole ear No. 2 101 are a pair, and the pole ear No. 3 101 and the pole ear No. 4 101 are a pair. Under the action of the corresponding bending assembly 22, the pole ear No. 101 and the pole ear No. 2 101 are folded toward each other toward the connection position on the same side of the adapter sheet, and the pole ear No. 3 101 and the pole ear No. 4 101 are folded toward each other toward the connection position on the other side of the adapter sheet under the action of the corresponding bending assembly 22, which not only improves the assembly efficiency, but also assists in the subsequent pole ear pressing and pole ear welding operations.

[0057] Further, refer to Figure 3-Figure 4, two mounting blocks 223 are provided at the output end of the first driving member 221, and the first driving member 221 can drive the two mounting blocks 223 to move toward or away from each other along the width direction of the battery cell 100; among the four bending jaws 222 corresponding to each first driving member 221, along the width direction of the battery cell 100, the two bending jaws 222 located on the outside are respectively installed on the two mounting blocks 223, and the two bending jaws 222 located in the middle are respectively installed on the two mounting blocks 223. This structure drives the two mounting blocks 223 to move toward or away from each other through the first driving member 221, so as to drive the bending jaws 222 to move simultaneously, so as to bend the corresponding tabs 101.

[0058] For example, the first bending jaw 222 and the third bending jaw 222 distributed in sequence along the width direction of the battery cell 100 are both installed on a mounting block 223, and the second bending jaw 222 and the fourth bending jaw 222 are both installed on another mounting block 223. When the first driving member 221 drives the two mounting blocks 223 to move toward each other, the first bending jaw 222 and the third bending jaw 222 respectively fold the first pole ear 101 and the third pole ear 101 toward one side, and the second bending jaw 222 and the fourth bending jaw 222 respectively fold the second pole ear 101 and the fourth pole ear 101 toward the other side, so as to realize the folding of the first pole ear 101 and the second pole ear 101 toward each other, and the folding of the third pole ear 101 and the fourth pole ear 101 toward each other. It should be noted that the order of the first bending jaw 222, the second bending jaw 222, the third bending jaw 222 and the fourth bending jaw 222 distributed in sequence along the width direction of the battery cell 100 can be arranged in sequence toward the mounting plate 21, or can be arranged in the direction away from the mounting plate 21. In this structure, the first driving member 221 drives the two mounting blocks 223 to approach each other (i.e., move toward each other) or move away from each other (i.e., move away from each other), so that one mounting block 223 drives the first and third bending jaws 222 to move along the width direction of the battery cell 100, and the other mounting block 223 drives the second and fourth bending jaws 222 to move in the opposite direction along the width direction of the battery cell 100. The first bending jaw 222 and the fourth bending jaw 222 are the two bending jaws 222 located on the outside, and the second bending jaw 222 and the third bending jaw 222 are the two bending jaws 222 located in the middle. The structure is cleverly designed and simple in structure, avoiding the use of multiple driving parts to drive the bending jaws 222 to move, thus saving space.

[0059] Of course, in other embodiments, the second bending jaw 222 and the third bending jaw 222 can also be arranged side by side without being misaligned. The second bending jaw 222 and the third bending jaw 222 are misaligned so that the bending jaw 222 can be set in a larger area to obtain a better folding effect.

[0060] Optionally, the first driving member 221 may be a finger cylinder.

[0061] Optionally, the lower part of the side surface facing each other of the first bending jaw 222 and the fourth bending jaw 222 is provided with a chamfer, and the chamfer can avoid the probability of the bending jaw 222 pressing on the pole lug 101, thereby improving the fault tolerance rate. The second bending jaw 222 and the third bending jaw 222 both include a vertical connection portion 2221, a horizontal extension portion 2222 and a bending portion 2223, the vertical connection portion 2221 and the bending portion 2223 are arranged in parallel, the horizontal extension portion 2222 is vertically arranged between the vertical connection portion 2221 and the bending portion 2223, the vertical connection portion 2221 is connected to the mounting block 223, and the bending portion 2223 is used to bend the pole lug 101; further, in order to reduce the probability of the bending portion 2223 pressing on the pole lug 101, the cross section of the bending portion 2223 is set to be a triangle with a pointed lower portion.

[0062] Alternatively, if Figure 5 As shown, an elastic sliding component 23 is provided on the mounting plate 21, and the two first driving members 221 are elastically slidably connected to the mounting plate 21 through the elastic sliding component 23. When the bending jaw 222 collides with other components, the bending jaw 222 can transmit the impact force to the elastic sliding component 23, and the elastic sliding component 23 can cause the first driving member 221 to be displaced along the height direction of the battery cell 100 (i.e., the Z-axis direction in the figure) to avoid damage to 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 the sliding plates 232. The elastic fixing plate 231 is connected to the mounting plate 21. The two sliding plates 232 are arranged on the mounting plate 21 at intervals along the length direction of the battery cell 100, and the sliding plates 232 are slidably connected to the mounting plate 21 along the height direction of the battery cell 100. The first elastic member 233 elastically abuts between the elastic fixing plate 231 and the corresponding sliding plates 232. The two first driving members 221 are respectively installed on the two sliding plates 232. The structure is slidably connected to the mounting plate 21 through the sliding plate 232, and the first elastic member 233 (which can be a spring or a plurality of disc springs superimposed on each other) elastically abuts between the sliding plate 232 and the elastic fixing plate 231, so that when the bending jaw 222 is hit, the first elastic member 233 is squeezed by the sliding plate 232 to achieve a flexible connection and avoid damage to 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, two screws 234 are respectively passed through the two through holes, and the two screws 234 are respectively connected to the two sliding plates 232, and the first elastic member 233 is sleeved on the corresponding screws 234 and elastically abuts between the corresponding protrusions 2311 and the sliding plates 232.

[0065] In the actual production process, the distance between the two pole ears 101 in the middle of each group of pole ears 101 is relatively close, and the two pole ears 101 are likely to tilt toward each other. In order to enable the bending jaws 222 in the middle to smoothly extend between the two pole ears 101 in the middle, the bending mechanism 2 also includes a pre-separation component 24, which can pre-separate the two pole ears 101 that are tilted toward each other. Specifically, Figure 5-Figure 6 As shown, the pre-separation component 24 includes a second driving member 241, a third driving member 242 and two separation blocks 243. The second driving member 241 is connected to the mounting plate 21, and the third driving member 242 is arranged at the output end of the second driving member 241. The second driving member 241 can drive the third driving member 242 to reciprocate along the height direction of the battery cell 100; the two separation blocks 243 are arranged at the output end of the third driving member 242, and the third driving member 242 can drive the two separation blocks 243 to move away from or close to each other along the length direction of the battery cell 100. When the two pole ears 101 located in the middle are tilted toward each other, the second driving member 241 drives the third driving member 242 to drive the two separation blocks 243 to move toward the battery cell 100, so that the two separation blocks 243 extend between the two groups of pole ears 101, and the third driving member 242 then drives the two separation blocks 243 away from each other, so that the two separation blocks 243 are respectively moved between the two pole ears 101 located in the middle of the two groups of pole ears 101, and the separation blocks 243 are moved between the two pole ears 101 located in the middle, so that the separation blocks 243 can straighten the two pole ears 101 tilted toward each other, so as to facilitate the bending jaws 222 to be smoothly inserted between the two pole ears 101 located in the middle, so as to ensure the normal bending operation of the pole ears 101.

[0066] Optionally, after the two separation blocks 243 straighten the two pole ears 101 that are tilted toward each other, the second driving member 241 drives the third driving member 242 to move further downward, so that the two separation blocks 243 located on the third driving member 242 press the adapter plate on the battery cell 100 downward, assisting the bending mechanism 2 in folding the pole ears 101, thereby improving the stability of the folding action of the pole ears 101.

[0067] Optionally, the second driving member 241 may be a double-axis air cylinder or a double-axis oil cylinder; the third driving member 242 may be a finger cylinder.

[0068] Optionally, the separation block 243 includes a mounting portion 2431 and a separation portion 2432 that are connected to each other, and a connecting block 244 is provided at the output end of the third driving member 242. The mounting portion 2431 is connected to the connecting block 244, and the separation portion 2432 is provided at the lower end of the mounting portion 2431 away from the connecting block 244, and the two separation portions 2432 are provided with sharp corners 2432a on the opposite sides thereof, that is, the sharp corners 2432a gradually increase from the two sides of the two separation portions 2432 to the middle of the two separation portions 2432. Through this structural design, the separation portion 2432 can move in between the two pole ears 101 located in the middle more smoothly, thereby preventing the separation portion 2432 from damaging the pole ears 101.

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

[0070] Specifically, Figure 7-Figure 11 As shown, the positioning mechanism 1 includes a jig frame 11 and two groups of pressure-maintaining components 13. The jig frame 11 is provided with a placement plate 111 and two slides 12 spaced apart along the width direction of the battery cell 100. The slide 12 is slidably connected to the jig frame 11. The two groups of pressure-maintaining components 13 are respectively arranged on the two slides 12. The two slides 12 can drive the two groups of pressure-maintaining components 13 to approach and move away from each other. The battery cell 100 is arranged on the placement plate 111. When the pole ear 101 is bent, the two slides 12 drive the two groups of pressure-maintaining components 13 to move toward the battery cell 100 (that is, the two slides 12 are close to each other). The pressure-maintaining component 13 can be pressed against the folded pole ear 101 to ensure that the pole ear 101 and the adapter are kept in a fit state, thereby ensuring the welding quality.

[0071] Further, refer to Figure 8 The pressure maintaining assembly 13 includes a swinging plate 131 and a pressure maintaining plate 132. The swinging plate 131 is connected to the corresponding slide 12 through a swing rod 133. The pressure maintaining plate 132 is connected to the swinging plate 131. When the pole ear 101 is bent, the slide 12 drives the pressure maintaining assembly 13 to move toward the battery cell 100. The first external driving mechanism drives the swinging plate 131 to move toward the battery cell 100. The swinging plate 131 can swing through the swing rod 133, so that the swinging plate 131 drives the pressure maintaining plate 132 to swing and press against the bent pole ear 101.

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

[0073] Optionally, the positioning mechanism 1 further includes two positioning members 14 respectively arranged on the two slides 12. When the two slides 12 are close to each other, the positioning members 14 located on the two slides 12 can clamp the poles on the adapter, thereby achieving accurate positioning of the adapter during welding.

[0074] Optionally, refer to Fig. 9 The positioning mechanism 1 also includes a height adjustment component 15, a placement plate 111 is arranged on the height adjustment component 15, the battery cell 100 is supported on the placement plate 111, the height adjustment component 15 is elastically connected to the bottom plate 112 of the fixture frame 11, and along the height direction of the battery cell 100, the height adjustment component 15 can adjust the height of the placement plate 111, thereby adjusting the height of the battery cell 100; and when the battery cell 100 collides, the height adjustment component 15 can provide elastic buffering to prevent the battery cell 100 from being damaged.

[0075] Specifically, the height adjustment assembly 15 includes an adjustment pressure block 151, an adjustment bolt 152, and two adjustment support blocks 153 that are spaced apart. The two adjustment support blocks 153 are elastically connected to the bottom plate 112 through a plurality of second elastic members 154. The adjustment pressure block 151 is provided with a through hole and is pressed against the two adjustment support blocks 153. The adjustment bolt 152 is passed through the through hole and is threadedly connected to the bottom plate 112. This structure enables the adjustment pressure block 151 to press down the adjustment support block 153 by tightening the adjustment bolt 152, or to drive the adjustment support block 153 to move upward under the elastic force of the second elastic member 154 by loosening the adjustment bolt 152, thereby achieving the adjustment support block 153 driving the placement plate 111 to rise or fall, so as to adjust 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, and a guide shaft 162 is provided at the opposite ends of the two panels 161. The panels 161 are slidably connected to the side beam 113 of the fixture frame 11 through the guide shaft 162, and 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 Fig.10The positioning mechanism 1 further includes a side alignment component 17, which includes two moving parts 171 spaced apart along the length direction of the battery cell 100. Both moving parts 171 are slidably connected to the bottom plate 112 through a guide rail slider structure, and the two moving parts 171 can move closer to or farther away from each other along the length direction of the battery cell 100. Specifically, the moving part 171 includes a mounting seat 1711, a side baffle 1712, and a top plug 1713. The mounting seat 1711 is slidably connected to the bottom plate 112 through a guide rail slider structure. The side baffle 1712 is disposed on the inner side of the mounting seat 1711. The top plug 1713 is provided with five inserts spaced apart along the width direction of the battery cell 100, and the top plug 1713 is disposed at the top of the mounting seat 1711. When the battery cell 100 is placed on the placement plate 111, the second external driving mechanism can drive the two moving parts 171 to approach each other, and the side baffles 1712 on the two mounting seats 1711 abut against the battery cell 100. The teeth of the top plug blocks 1713 on the two mounting seats 1711 are respectively inserted into the two groups of pole ears 101. Any pole ear 101 in each group of pole ears 101 can be inserted between any two teeth on the corresponding top plug block 1713, so that the top plug block 1713 can provide auxiliary support for the pole ear 101, thereby reducing the probability of the pole ear 101 tilting.

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

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

[0080] Optionally, a buffer bolt 1721 is provided on the follower rod 172, and buffer protrusions 1121 are provided on both sides of the bottom plate 112 along the width direction of the battery cell 100. When the follower rod 172 is driven to move by the second external driving mechanism, the buffer bolt 1721 can abut against the buffer protrusion 1121 to achieve in-place buffering of the moving part 171.

[0081] In order to prevent the moving member 171 from sliding randomly when the positioning mechanism 1 moves, the side alignment assembly 17 also includes two limit adjustment blocks 173 corresponding to the two moving members 171 respectively. The limit adjustment blocks 173 are arranged on the bottom plate 112 and elastically abut against the corresponding mounting seats 1711, so that the moving member 171 has damping.

[0082] Reference Fig.11The positioning mechanism 1 also includes a lifting assembly 18, which includes a large plate 181 and four guide pillars 182 arranged on the large plate 181. Linear bearings 183 corresponding to the four guide pillars 182 are arranged on the bottom plate 112 of the jig frame 11. The four guide pillars 182 are slidably connected to the four linear bearings 183 respectively. The jig frame 11 can move up and down relative to the large plate 181 through the guide pillars 182, that is, when the jig frame 11 drives the battery cell 100 to move up, the bending jaw 222 can be extended into the root of the pole ear 101 to realize the bending jaw 222 to fold the pole ear 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 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 battery assembly device, wherein the battery comprises a battery cell (100), wherein the battery cell (100) is provided with a plurality of pole tabs (101), wherein along the length direction of the battery cell (100), the plurality of pole tabs (101) are divided into two groups, and each group of the pole tabs (101) comprises four pole tabs (101) spaced apart and distributed along the width direction of the battery cell (100), wherein: The battery assembly device comprises: A positioning mechanism (1) for positioning the battery cell (100); A bending mechanism (2), comprising a mounting plate (21) and two groups of bending components (22) arranged on the mounting plate (21) at intervals along the length direction of the battery cell (100), the two groups of bending components (22) corresponding one-to-one to the two groups of pole tabs (101); Each group of the bending components (22) comprises 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 outside to move towards each other so that the two pole ears (101) located on the outside of a corresponding group of pole ears (101) are folded towards each other; and 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 pole ears (101) located in the middle of a corresponding group of pole ears (101) are folded away from each other.

2. The battery assembly device 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) is capable of driving the two mounting blocks (223) to move towards or away from each other along the width direction of the battery cell (100); Among the four bending jaws (222) corresponding to each of the first driving members (221), along the width direction of the battery cell (100), the two bending jaws (222) located on the outside are respectively mounted on the two mounting blocks (223), and the two bending jaws (222) located in the middle are respectively mounted on the two mounting blocks (223).

3. The battery assembly device according to claim 1, characterized in that: An elastic sliding component (23) is provided on the mounting plate (21), and the two first driving members (221) are elastically slidably connected to the mounting plate (21) via the elastic sliding component (23), so that the first driving members (221) can generate displacement along the height direction of the battery core (100).

4. The battery assembly device according to claim 3, characterized in that: The elastic sliding component (23) comprises: An elastic fixing plate (231) connected to the mounting plate (21); Two sliding plates (232) are arranged on the mounting plate (21) at intervals along the length direction of the battery cell (100), and the sliding plates (232) are slidably connected to the mounting plate (21) along the height direction of the battery cell (100), and the two first driving members (221) are both mounted on the two sliding plates (232); Two first elastic members (233) corresponding one to the sliding plates (232), wherein the first elastic members (233) are elastically abutted between the elastic fixing plate (231) and the corresponding sliding plate (232).

5. The battery assembly device according to claim 1, characterized in that: The bending mechanism (2) further comprises a pre-separation component (24), wherein the pre-separation component (24) comprises: A second driving member (241) connected to the mounting plate (21); A third driving member (242) is arranged at an output end of the second driving member (241); Two separation blocks (243) are arranged at the output end of the third driving member (242); the second driving member (241) can drive the third driving member (242) to drive the separation blocks (243) to move toward the battery cell (100) along the height direction of the battery cell (100); 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 respectively into between two of the middle pole ears (101) in the two groups of pole ears (101).

6. The battery assembly device according to any one of claims 1 to 5, characterized in that: The positioning mechanism (1) comprises: A jig frame (11), wherein a placement plate (111) for supporting the battery cell (100) is arranged in the jig frame (11); Two slides (12) are spaced apart and slidably arranged on the jig frame (11) along the width direction of the battery core (100), and the two slides (12) can move closer to or farther from each other; Two groups of pressure-maintaining components (13) are respectively arranged on the two slides (12), and the pressure-maintaining components (13) are used to press against the folded pole lugs (101).

7. The battery assembly device according to claim 6, characterized in that: The pressure-maintaining assembly (13) comprises a swing plate (131) and a pressure-maintaining plate (132); the swing plate (131) is arranged on the corresponding slide (12) via a swing rod (133); the pressure-maintaining plate (132) is arranged on the corresponding swing plate (131); the swing plate (131) can drive the pressure-maintaining plate (132) to swing toward the battery cell (100) via the swing rod (133), so that the pressure-maintaining plate (132) is pressed against the folded pole ear (101).

8. The battery assembly device according to claim 6, characterized in that: The positioning mechanism (1) further comprises a height adjustment component (15), wherein the height adjustment component (15) is elastically connected to a bottom plate (112) of the fixture frame (11), and the placement plate (111) is arranged on the height adjustment component (15). Along the height direction of the battery cell (100), the height adjustment component (15) can adjust the height of the placement plate (111).

9. The battery assembly device according to claim 8, characterized in that: The height adjustment component (15) comprises: Two adjustable support blocks (153) distributed at intervals, the adjustable support blocks (153) being elastically connected to the bottom plate (112) via a second elastic member (154), and the placement plate (111) being mounted on the two adjustable support blocks (153); An adjusting pressure block (151) and an adjusting bolt (152), wherein the adjusting pressure block (151) is provided with a through hole and is pressed against the two adjusting support blocks (153), and the adjusting bolt (152) is passed through the through hole and is threadedly connected to the bottom plate (112).

10. The battery assembly device according to claim 6, characterized in that: The positioning mechanism (1) further comprises: A pressing assembly (16) comprising two panels (161) spaced apart along the width direction of the battery cell (100), the panels (161) being slidably connected to the jig frame (11), and the two panels (161) being able to approach each other to press against two side surfaces of the battery cell (100) along the width direction thereof; The side alignment component (17) comprises two movable members (171) arranged at intervals along the length direction of the battery cell (100); the movable members (171) are slidably connected to the jig frame (11); the two movable members (171) can be moved close to each other to press against two side surfaces of the battery cell (100) along its length direction; and the two movable members (171) can also respectively assist in supporting the two groups of pole ears (101).

Images