Battery clamp
By designing the clamping module and negative pressure module of the battery clamp, and using the air holes to form negative pressure to balance the internal and external pressure of the battery, the problem of electrolyte extrusion during the negative pressure return process of lithium batteries is solved, and the battery casing is fixed and the electrolyte is retained.
Patent Information
- Application Number
- CN202423149526.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-19
AI Technical Summary
During the negative pressure helium return operation after the secondary electrolyte injection of lithium batteries, the internal gas pressure of the battery casing decreases, causing deformation and squeezing out the electrolyte, resulting in waste.
Design a battery clamp, including a clamping module and a negative pressure module, to form a negative pressure by using air holes on the first and second clamping plates to balance the internal and external pressure of the battery and prevent deformation and electrolyte extrusion.
This effectively prevents the battery casing from deforming during the negative pressure helium return process, keeps the electrolyte inside the casing, and improves production efficiency and material utilization.
Smart Images
Figure CN223680355U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery technology field especially relates to a battery clamp. BACKGROUND
[0002] After secondary liquid injection of lithium battery production line, negative pressure helium return operation needs to be carried out, in this process, the air pressure in the battery shell reduces, while the air pressure outside the battery shell is normal, which leads to the stress deformation of the battery shell, and further leads to the extrusion of the electrolyte in the battery shell. SUMMARY
[0003] The utility model provides a kind of battery clamp, which can be used to avoid the electrolyte in the battery being extruded out of the battery shell during the negative pressure helium return process.
[0004] The utility model provides a kind of battery clamp, comprising clamping module and negative pressure module.
[0005] The clamping module includes a first clamping plate and a second clamping plate, which are oppositely arranged to clamp a battery located between the first and second clamping plates.
[0006] The first clamping plate has a plurality of first air holes on the side facing the second clamping plate, and the second clamping plate has a plurality of second air holes on the side facing the first clamping plate.
[0007] The negative pressure module is in communication with the first and second air holes, respectively, and is used to form negative pressure at the first and second air holes to allow the plurality of first and second air holes to adsorb the opposite sides of the battery shell, respectively.
[0008] The battery clamp provided by the utility model has a first clamping plate and a second clamping plate, which can cooperate to clamp a battery and keep it fixed. The first clamping plate has first air holes on the side facing the battery, and the second clamping plate has second air holes on the side facing the battery. When the battery is vacuumed and the internal pressure of the battery decreases, negative pressure is formed at the first and second air holes, respectively, and the first and second air holes generate suction force on the battery shell, respectively, thereby balancing the suction force caused by vacuuming in the battery and making the internal and external pressures of the battery consistent. In this way, the battery shell will not deform under the balanced internal and external pressures, and the electrolyte in the battery will not be extruded out, avoiding waste of electrolyte. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 It is a structural schematic view of the battery clamp in the embodiments of the utility model.
[0010] Figure 2 It is a structure schematic view of the battery clamp clamping the battery in the embodiment of the utility model;
[0011] Figure 3 It is a structure schematic view of the first clamping plate in the embodiment of the utility model;
[0012] Figure 4 It is a structure schematic view of the second clamping plate in the embodiment of the utility model;
[0013] Figure 5 It is a plan structure schematic view of the battery clamp in the embodiment of the utility model;
[0014] Figure 6 It is a structure schematic view of another view of the battery clamp in the embodiment of the utility model.
[0015] In the drawing,
[0016] 10-battery, 20-battery carrier plate, 30-helium return module, 100-clamping module, 110-first clamping plate, 111-first air hole, 112-first recess, 113-first sealing gasket, 114-first communication port, 120-second clamping plate, 121-second air hole, 122-second recess, 123-second sealing gasket, 124-second communication port, 200-first drive module, 210-first drive device, 220-first guide rail, 230-first connecting plate, 240-first adapter plate, 250-first limiting block, 300-second drive module, 310-second drive device, 320-second guide rail, 330-second connecting plate, 340-second adapter plate, 350-second limiting block, 400-third drive module, 410-third drive device, 420-third guide rail, 430-third connecting plate. DETAILED DESCRIPTION
[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.
[0018] Reference Figure 1 And Figure 2The battery clamp in the embodiment of the utility model can include a clamping module 100 and a negative pressure module (not shown in the figure), the clamping module 100 can be used for clamping the battery 10, and the negative pressure module can exert suction on the outer surface of the shell of the battery 10 in cooperation with the clamping module 100, so that the battery 10 is prevented from deforming in the process of vacuumizing, and then the electrolyte in the battery 10 is prevented from being squeezed out of the shell of the battery 10.
[0019] Specifically, as shown in Figure 1 and Figure 2 , the battery 10 can be placed on the battery carrier plate 20, the clamping module 100 can include oppositely arranged first clamping plates 110 and second clamping plates 120, the first clamping plates 110 and the second clamping plates 120 are both located above the battery carrier plate 20, and the first clamping plates 110 and the second clamping plates 120 are respectively located on opposite sides of the battery 10. The first clamping plates 110 and the second clamping plates 120 are respectively in contact with the two sides of the shell of the battery 10, so that the battery 10 is clamped by the first clamping plates 110 and the second clamping plates 120, and the battery 10 is ensured to be fixed during the process of vacuumizing.
[0020] It is worth noting that the battery 10 in the embodiment is a square battery, and the first clamping plates 110 and the second clamping plates 120 can be respectively in contact with two large faces of the shell of the battery 10. Since the large faces of the shell of the battery 10 occupy a larger area, the large faces of the shell of the battery 10 are more likely to deform when the internal air pressure of the battery 10 decreases.
[0021] Referring to Figures 2 to 4 , a plurality of first air holes 111 are arranged on one side of the first clamping plate 110 facing the second clamping plate 120, and the negative pressure module is in communication with the plurality of first air holes 111 to form negative pressure at each first air hole 111. A plurality of second air holes 121 are arranged on one side of the second clamping plate 120 facing the first clamping plate 110, and the negative pressure module is in communication with the plurality of second air holes 121 to form negative pressure at each second air hole 121.
[0022] As shown in Figure 2 , when the battery 10 is clamped and fixed by the first clamping plates 110 and the second clamping plates 120, the helium return module 30 for vacuumizing the inside of the battery 10 is located at the top of the battery 10 and can move up and down relative to the battery 10 to complete the vacuumizing work of the battery 10. At this time, when the helium return module 30 performs vacuumizing on the inside of the battery 10, the negative pressure at the first air holes 111 and the second air holes 121 can respectively generate a certain suction on the shell of the battery 10, and the suction can be used to pull the two large faces of the shell of the battery 10 outward, so as to balance the suction generated in the battery 10 due to vacuumizing, so that the internal and external pressures of the shell of the battery 10 are consistent, thereby preventing the shell of the battery 10 from deforming.
[0023] In some embodiments, referring to Figure 2 and Figure 3, one side of the first clamping plate 110 facing the second clamping plate 120 can be provided with a first groove 112, and the plurality of first air holes 111 can be arranged at the bottom of the first groove 112. When the first clamping plate 110 is in contact with the battery 10 shell, the top of the first groove 112 provided with an opening is actually in contact with the surface of the battery 10 shell, at this time, the battery 10 shell can cover the opening of the first groove 112, so that the inside of the first groove 112 forms a relatively closed space. When negative pressure is formed at each first air hole 111, the negative pressure at the first air hole 111 can concentrate the suction force formed on the battery 10 shell, thereby facilitating the adjustment of the suction force on the battery 10 shell, so that the internal and external pressures of the battery 10 shell are consistent.
[0024] Further, the top of the first groove 112 can also be provided with a first sealing gasket 113, which can be fixed to the top of the first groove 112 around the circumference of the first groove 112. When the first clamping plate 110 is clamped on the battery 10, the first sealing gasket 113 can be directly in contact with the surface of the battery 10 shell. Based on the first clamping plate 110 being provided with the first groove 112, the first sealing gasket 113 can enhance the sealing effect between the battery 10 shell and the top of the first groove 112, thereby better forming a closed space inside the first groove 112.
[0025] Similarly, referring to Figure 2 and Figure 4 , one side of the second clamping plate 120 facing the first clamping plate 110 is provided with a second groove 122, and the plurality of second air holes 121 can be arranged at the bottom of the second groove 122. When the second clamping plate 120 is clamped on the battery 10, the top of the second groove 122 is in contact with the surface of the battery 10 shell, at this time, the battery 10 shell can cover the opening of the second groove 122, so that the inside of the second groove 122 forms a relatively closed space. When negative pressure is formed at each second air hole 121, the suction force generated by the negative pressure can be concentrated on the battery 10 shell, so as to facilitate the adjustment of the negative pressure and keep the internal and external pressures of the battery 10 shell consistent.
[0026] The top of the second groove 122 can also be provided with a second sealing gasket 123, which is arranged on the top of the second groove 122 along the circumference of the second groove 122. When the second clamping plate 120 is clamped on the battery 10, the second sealing gasket 123 can be directly in contact with the surface of the battery 10 shell. Based on the second clamping plate 120 being provided with the second groove 122, the first sealing gasket 113 can enhance the sealing effect between the battery 10 shell and the top of the first groove 112, thereby improving the airtightness of the inside of the second groove 122.
[0027] In some embodiments, the first clamping plate 110 can be provided with a first cavity (not shown in the figure) which can be in communication with each first air hole 111. The top of the first clamping plate 110 can also be provided with a first communication port 114 which is in communication with the first cavity, and the first communication port 114 can also be in communication with the negative pressure module. Exemplarily, a communication valve can be connected at the first communication port 114 to communicate with the negative pressure module through the communication valve.
[0028] When the negative pressure module forms a negative pressure at the first air hole 111, the negative pressure module can draw air inside the first cavity through the first communication port 114 to form a negative pressure state. Since the first air hole 111 is in communication with the first cavity, the inside of the first recess 112 is in a relatively closed state, thereby enabling the first air hole 111 to form a negative pressure state. At this time, when the negative pressure inside the first cavity is constant, the negative pressure at each first air hole 111 is the same, thereby enabling the first air hole 111 to exert an equal amount of suction force on the surface of the battery 10 housing.
[0029] Similarly, the inside of the second clamping plate 120 can also be provided with a second cavity which is in communication with each second air hole 121. The top of the second clamping plate 120 can also be provided with a second communication port 124 which is in communication with the second cavity, and the second communication port 124 can also be in communication with the negative pressure module. When the negative pressure module forms a negative pressure at each second air hole 121, the negative pressure module first draws air inside the second cavity to form a negative pressure state inside the second cavity. At this time, since the second air hole 121 is in communication with the second cavity, the inside of the second recess 122 is in a relatively closed state, and a stable negative pressure state can also be formed at the second air hole 121. Since the negative pressure at each second air hole 121 is consistent, the second air hole 121 can exert an equal amount of suction force on the surface of the battery 10 housing.
[0030] In some embodiments, referring to Figure 4 The clamping module 100 of the battery clamp can be multiple, and the multiple clamping modules 100 can be arranged along the arrangement direction of the first clamping plate 110 and the second clamping plate 120. That is, the battery clamp can clamp and fix multiple batteries 10 at the same time, and at this time, multiple batteries 10 can be simultaneously subjected to vacuum suction in order to improve work efficiency.
[0031] The first clamping plate 110 and the second clamping plate 120 in each clamping module 100 can also move relative to each other. Specifically, the first clamping plate 110 and the second clamping plate 120 move along the arrangement direction of the two, so that the first clamping plate 110 can be close to or away from the first clamping plate 110, thereby changing the distance between the first clamping plate 110 and the second clamping plate 120. When the battery 10 is placed in the helium return station, the battery 10 can enter between the first clamping plate 110 and the second clamping plate 120 through the gap between the first clamping plate 110 and the second clamping plate 120. At this time, the distance between the first clamping plate 110 and the second clamping plate 120 can be greater than the width of the battery 10, so that the battery 10 can be inserted between the first clamping plate 110 and the second clamping plate 120. When the battery 10 is placed in place, the first clamping plate 110 and the second clamping plate 120 can move towards each other, thereby clamping the battery 10, so that the battery 10 is fixed. When the battery 10 completes the helium return, the first clamping plate 110 and the second clamping plate 120 move away from each other, so that the battery 10 can be taken out from between the first clamping plate 110 and the second clamping plate 120.
[0032] In addition, since the sizes of different models of batteries 10 are different, by adjusting the distance between the first clamping plate 110 and the second clamping plate 120, the production of different models of batteries 10 can be adapted, thereby improving the versatility of the battery clamp in the embodiment.
[0033] As shown in Figure 2 , the battery clamp can also include a first driving module 200 and a second driving module 300. The first driving module 200 can be used to drive the first clamping plate 110 of each clamping module 100 to move synchronously along the arrangement direction of the first clamping plate 110 and the second clamping plate 120, and the second driving module 300 can be used to drive the second clamping plate 120 of each clamping module 100 to move synchronously along the arrangement direction of the first clamping plate 110 and the second clamping plate 120. In this way, the distance between the first clamping plate 110 and the second clamping plate 120 in each clamping module 100 can be adjusted at the same time, which is beneficial to improve the work efficiency.
[0034] Specifically, referring to Figure 5 and Figure 6 together, the first driving module 200 can include a first driving device 210, a first guide rail 220, a first connecting plate 230, and a plurality of first adapter plates 240. The plurality of first adapter plates 240 are arranged one by one corresponding to the plurality of first clamping plates 110. Each first clamping plate 110 is connected to the first connecting plate 230 through the first adapter plate 240, the first guide rail 220 extends along the arrangement direction of the first clamping plate 110 and the second clamping plate 120, and the first connecting plate 230 is connected to the first guide rail 220 through a sliding block. The first driving device 210 can drive the first connecting plate 230 to move relative to the first guide rail 220 along the extension direction of the first guide rail 220, thereby driving each first clamping plate 110 to move.
[0035] The second driving module 300 can include a second driving device 310, a second guide rail 320, a second connecting plate 330, and a plurality of second adapter plates 340, which are arranged one by one corresponding to the plurality of second clamping plates 120. Each second clamping plate 120 is connected to the second connecting plate 330 through the second adapter plate 340, the second guide rail 320 extends along the arrangement direction of the first clamping plate 110 and the second clamping plate 120, and the second connecting plate 330 is connected to the first guide rail 220 through a sliding block. The second driving device 310 can drive the second connecting plate 330 to move along the extension direction of the second guide rail 320 relative to the second guide rail 320, so as to drive each second clamping plate 120 to move.
[0036] In the embodiment, the first guide rail 220 and the second guide rail 320 can be arranged on the same side of the clamping module 100, which can facilitate the battery 10 to enter between the first clamping plate 110 and the second clamping plate 120 from the other side of the clamping module 100. Since the plurality of first adapter plates 240 are all connected to the first connecting plate 230, and the plurality of second adapter plates 340 are all connected to the second connecting plate 330, the plurality of first adapter plates 240 can be arranged in parallel, the plurality of second adapter plates 340 can also be arranged in parallel, and the first adapter plate 240 is parallel to the second adapter plate 340, so as to save space.
[0037] At this time, one end of each first adapter plate 240 can be fixedly connected to the first clamping plate 110, and the other end is fixedly connected to the side of the first connecting plate 230 away from the first guide rail 220. One end of each second adapter plate 340 can be fixedly connected to the second clamping plate 120, and the other end is fixedly connected to the side of the second connecting plate 330 away from the second guide rail 320. If the first connecting plate 230 is located between the second connecting plate 330 and the first clamping plate 110, the height of the second adapter plate 340 can be higher than the height of the first connecting plate 230, and when the second adapter plate 340 is fixed across the first connecting plate 230 and the second connecting plate 330, the friction between the second adapter plate 340 and the first connecting plate 230 can be avoided. The friction between the second adapter plate 340 and the first connecting plate 230 is increased.
[0038] Further, as shown in FIG. 1, Figure 6 Similarly, the second guide rail 320 can also be provided with a second limiting block 350 at opposite ends, respectively, which can be used for limiting the sliding block connected to the second guide rail 320, thereby limiting the movement distance of the second clamping plate 120.
[0039] Similarly, the second guide rail 320 can also be provided with a second limiting block 350 at opposite ends, respectively, which can be used for limiting the sliding block connected to the second guide rail 320, thereby limiting the movement distance of the second clamping plate 120.
[0040] In practice, the first driving device 210 and the second driving device 310 can be motors or air cylinders, which are not limited herein.
[0041] In some embodiments, as shown in Figure 1 and Figure 6 The battery carrier 20 is located below the clamping module 100, and in the horizontal direction, the arrangement direction of the battery carrier 20 is perpendicular to the arrangement direction of the clamping module 100. The battery clamp can further include a third driving module 400, which can be used to drive the clamping module 100 to move along the arrangement direction of the battery carrier 20 and the clamping module 100, so that the clamping module 100 is close to or away from the battery 10.
[0042] As an optional embodiment, the third driving module 400 moves the clamping module 100, the first driving module 200 and the second driving module 300 as a whole along the arrangement direction of the battery carrier 20 and the clamping module 100, so that the battery carrier 20 can be moved directly below the clamping module 100, and at this time, the battery 10 can be completely or substantially completely located between the first clamping plate 110 and the second clamping plate 120. After the battery 10 completes the helium return, the third driving module 400 can also drive the battery carrier 20 to move away from the clamping module 100, so that the battery 10 is separated from the first clamping plate 110 and the second clamping plate 120.
[0043] Specifically, referring to Figure 6 , the third driving module 400 can include a third driving device 410, a third guide rail 420 and a third connecting plate 430. The third guide rail 420 can be two, and the two third guide rails 420 are arranged in parallel, and the third guide rail 420 extends along the arrangement direction of the clamping module 100 and the first guide rail 220. The first driving module 200 and the second driving module 300 are arranged on the third connecting plate 430. Since the first clamping plate 110 is connected with the first adapter plate 240, and the second clamping plate 120 is connected with the second adapter plate 340, the first clamping plate 110 and the second clamping plate 120 are relatively fixed with the third connecting plate 430. The third connecting plate 430 can be connected with the third guide rail 420 through a sliding block, and the third driving device 410 is connected with the third connecting plate 430 to drive the third connecting plate 430 to move along the extension direction of the third guide rail 420 relative to the third guide rail 420, thereby driving the first clamping plate 110 and the second clamping plate 120 to move synchronously.
[0044] In practice, the third driving device 410 can be a motor cooperating with a lead screw and a connecting rod, or the third driving device 410 can be an air cylinder, etc.
[0045] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.
Claims
1. A battery clamp characterized by, The clamping module comprises a first clamping plate and a second clamping plate, and the first clamping plate and the second clamping plate are oppositely arranged to clamp a battery between the first clamping plate and the second clamping plate. The first clamping plate is provided with a plurality of first air holes on one side facing the second clamping plate, and the second clamping plate is provided with a plurality of second air holes on one side facing the first clamping plate. The negative pressure module is in communication with the first air holes and the second air holes respectively, and is used to form negative pressure at the first air holes and the second air holes to enable the plurality of first air holes and the plurality of second air holes to respectively adsorb the opposite sides of the battery shell. The first clamping plate is provided with a first groove on one side facing the second clamping plate, and the plurality of first air holes are arranged at the bottom of the first groove.
2. The battery clamp of claim 1, wherein, The top of the first groove is provided with a first sealing gasket arranged along the circumference of the first groove, and the first sealing gasket is used to contact the surface of the battery shell.
3. The battery clamp of claim 2, wherein, The second clamping plate is provided with a second groove on one side facing the first clamping plate, and the plurality of second air holes are arranged at the bottom of the second groove.
4. The battery clamp of claim 1, wherein, The top of the second groove is provided with a second sealing gasket arranged along the circumference of the second groove, and the second sealing gasket is used to contact the surface of the battery shell.
5. The battery clamp of claim 4, wherein, The first clamping plate can move relative to the second clamping plate along the arrangement direction of the first clamping plate and the second clamping plate to enable the first clamping plate to approach or move away from the second clamping plate.
6. The battery clamp of claim 1, wherein, The clamping module is a plurality of clamping modules arranged along the arrangement direction of the first clamping plate and the second clamping plate.
7. The battery clamp of claim 6, wherein, It also comprises a first driving module and a second driving module; 8. The battery clamp of claim 7, wherein, The first driving module is used to drive the first clamping plate of each clamping module to move synchronously along the arrangement direction of the first clamping plate and the second clamping plate; The second driving module is used to drive the second clamping plate of each clamping module to move synchronously along the arrangement direction of the first clamping plate and the second clamping plate. It also comprises a third driving module; 9. The battery clamp of claim 1, wherein, The arrangement direction of the clamping module and the battery carrier plate for placing the battery is perpendicular to the arrangement direction of the first clamping plate and the second clamping plate; The third driving module is used to drive the clamping module to move along the extension direction of the battery carrier plate and the clamping module to enable the battery on the battery carrier plate to enter between the first clamping plate and the second clamping plate. The first clamping plate has a first cavity in communication with the first air holes, and the second clamping plate has a second cavity in communication with the second air holes; 10. The battery clamp of claim 1, wherein, The top of the first clamping plate is provided with a first communication port in communication with the first cavity, and the first communication port is in communication with the negative pressure module; The top of the second clamping plate is provided with a second communication port in communication with the second cavity, and the second communication port is in communication with the negative pressure module.