Battery clamping device

Abstract

The utility model discloses a battery clamping device, and relates to the technical field of power battery production and manufacturing equipment. The battery clamping device comprises a base, a first clamping assembly, a second clamping assembly and a limiting top plate. The base is provided with a battery placing area; the first clamping assembly is located on one side of the battery containing area in the first direction and provided with a first clamp capable of moving towards the battery containing area in the first direction. The second clamping assembly is located on the side, away from the first clamping assembly, of the battery containing area in the first direction, and the second clamping assembly is provided with a second clamp capable of moving in the direction opposite to the first clamp in the first direction; the limiting top plate is located on the top of the battery containing area in the second direction and provided with a first through groove corresponding to the battery containing area. By adopting the technology provided by the utility model, the thickness of the battery can be effectively improved, and gas in the battery can be exhausted.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery production and manufacturing equipment, in particular to a battery clamping device. Background Art

[0002] The sealing and clamping of power batteries is a crucial step in the production process, ensuring precise positioning of the vision system during laser welding. The inventors discovered that extruding the battery casing to release internal gas before welding effectively reduces the battery's thickness and allows for subsequent gas generation during use, thereby reducing the risk of battery bulging.

[0003] However, current sealing welding fixtures mostly function to automatically clamp and position batteries. For example, Chinese utility model patent document (CN206764232U) discloses a battery sealing fixture comprising a first clamping device and a second clamping device, respectively used to clamp the sides and ends of the battery to hold the battery cell. However, the contact surface between the clamping device and the battery is flat, resulting in minimal compression of the battery during clamping, limited improvement in battery thickness, and a low amount of gas discharged from the battery. Utility Model Content

[0004] The utility model provides a battery clamping device to solve the problem in the prior art that the amount of gas inside the battery discharged by the sealing clamp is small.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is to provide a battery clamping device, which includes: a base, a first clamping assembly, a second clamping assembly and a limiting top plate.

[0006] The base is provided with a battery placement area; the first clamping assembly is located on one side of the battery placement area along a first direction, and is provided with a first clamp capable of moving toward the battery placement area along the first direction.

[0007] The second clamping assembly is located on the side of the battery placement area away from the first clamping assembly along the first direction, wherein the second clamping assembly is provided with a second clamp that can move toward the first clamp along the first direction; the limiting top plate is located at the top of the battery placement area along the second direction, and is provided with a first through groove corresponding to the battery placement area.

[0008] The technical solution provided by this utility model has the following beneficial effects compared with the prior art:

[0009] By providing a first clamping assembly and a second clamping assembly to clamp the target battery from both sides, the battery can be secured during the sealing operation and the battery casing located in the battery placement area can be squeezed to expel gas from the battery. A limit plate is provided on top of the battery placement area, and the limit plate has a first through-slot corresponding to the battery placement area, allowing an external welding head to perform welding operations on the battery through the first through-slot.

[0010] Compared to current methods that only secure the battery at its ends, the first and second clamps squeeze the battery from both sides, increasing the contact area and enhancing the squeezing effect. This reduces the battery's thickness and makes its thickness distribution more even. This also leaves space for gases generated during subsequent use, reducing the risk of battery failure and further extending its service life.

[0011] In some embodiments, the battery placement area is provided with a battery platform and a lifting assembly connected to the battery platform, the battery platform is used to place the target battery, and the lifting assembly is used to drive the battery platform to move along the second direction, so that the target battery located in the battery platform can pass through the first through groove along the second direction.

[0012] Furthermore, the base is further provided with a second through groove, and the lifting assembly is embedded in the second through groove along the second direction.

[0013] The above technical solution provides a battery platform to facilitate the cooperation of the lifting assembly to lift the battery, and allows the battery cover to protrude from the first slot to the limit plate, thereby increasing the welding working space. The lifting assembly is embedded in the second slot, that is, the lifting assembly can pass through the second slot and fold under the base, making the battery platform flush with the upper surface of the base, so that the external transmission device can connect with the battery platform and directly transfer batteries to it.

[0014] In some embodiments, the first clamp includes a plurality of first partitions, which are spaced apart along a third direction and form a plurality of first clamping spaces; or the second clamp includes a plurality of second partitions, which are spaced apart along the third direction and form a second clamping space.

[0015] Using this technical solution, a first separator is added to the first clamp, and a second separator is added to the second clamp, allowing the first and second separators to clamp and compress multiple batteries. For example, when clamping a battery module, the first and second separators are respectively embedded in the gap between adjacent batteries, thereby squeezing the battery casing on the side with the larger surface area, thereby increasing the flat compression.

[0016] In some embodiments, the first partition is provided with a corrugated step on one side along the third direction, and the second partition is provided with a corrugated step on the other side along the third direction.

[0017] By adopting the above technical solution, uneven corrugated steps are set on the opposite sides of the first partition and the second partition, so as to facilitate the metal gasket to penetrate into the gap between the two adjacent batteries, and allow the metal gasket to squeeze the side of the battery to form an inward concave extrusion, thereby increasing the gas discharge volume inside the battery, and thus enabling the interior of the battery to be in a negative pressure state after welding and sealing.

[0018] In some embodiments, when the first clamp and the second clamp clamp the target battery along the first direction, the first separator and the second separator at least partially overlap along the first direction, ensuring that the battery is covered and squeezed by the first clamp and the second clamp.

[0019] In some embodiments, the base is further provided with a first bracket and a second bracket, and the first bracket and the second bracket are located on both sides of the battery placement area along the first direction.

[0020] With the above technical solution, the first bracket supports the first clamp, and the second bracket supports the second clamp, so that the first clamp and the second clamp can be aligned with the middle of the battery when moving along the first direction to avoid collision with other devices.

[0021] In some embodiments, the first clamping assembly further includes a first driving cylinder, which is used to drive the first clamp to move along the first direction; the second clamping assembly further includes a second driving cylinder, which is used to drive the second clamp to move along the first direction.

[0022] Using the above technical solution, the first clamp and the second clamp are driven by the first driving cylinder and the second driving cylinder respectively, so that the first clamp and the second clamp can operate independently of each other. For example, the first clamp can be started first and then the second clamp, or the second clamp can be started first and then the first clamp, or the first clamp and the second clamp can be started at the same time.

[0023] In some embodiments, the first clamping assembly further includes a first sliding member, which is respectively connected to the first driving cylinder and the first clamp; the second clamping assembly further includes a second sliding member, which is respectively connected to the second driving cylinder and the second clamp; wherein the first bracket is provided with a first guide rail cooperating with the first sliding member; and the second bracket is provided with a second guide rail cooperating with the second sliding member.

[0024] By adopting the above technical solution, the moving trajectories of the first clamp and the second clamp can be limited respectively by adding the first guide rail and the second guide rail, and the loss of the first driving cylinder driving the first clamp back and forth and the loss of the second driving cylinder driving the second clamp back and forth can be reduced.

[0025] In some embodiments, the base is further provided with a third bracket, and the third bracket is used to support the limiting top plate along the second direction, so that the above-mentioned multiple components are all covered under the limiting top plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0027] Figure 1 This is a three-dimensional structural diagram of an embodiment of a battery clamping device provided by the utility model. Figure 1 ;

[0028] Figure 2 This is a three-dimensional structural diagram of an embodiment of a battery clamping device provided by the utility model. Figure 2 ;

[0029] Figure 3 This is a top view of an embodiment of a first clamp and a second clamp of a battery clamping device provided by the utility model;

[0030] Figure 4 This is a three-dimensional structural diagram of an embodiment of a battery clamping device provided by the utility model. Figure 3 ;

[0031] Figure 5 This is a front view of an embodiment of a battery clamping device provided by the present utility model;

[0032] Figure 6 It is a top view of an embodiment of a battery clamping device provided by the utility model.

[0033] In the picture:

[0034] 10. Base; 11. Battery placement area; 110. Battery loading platform; 111. Lifting assembly; 12. Second through slot; 13. First bracket; 130. First guide rail; 14. Second bracket; 140. Second guide rail; 15. Third bracket;

[0035] 20. First clamping assembly; 21. First clamp; 210. First partition; 211. First clamping space; 22. Corrugated platform; 23. First driving cylinder; 24. First sliding member;

[0036] 30. Second clamping assembly; 31. Second clamp; 310. Second partition; 311. Second clamping space; 32. Second driving cylinder; 33. Second sliding member; 40. Position-limiting top plate; 41. First through groove. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] In order to facilitate the subsequent description, before describing the specific structure of the battery clamping device, this application first combines Figure 2 A first direction (X), a second direction (Z), and a third direction (Y) are defined. The first direction is the length of the battery clamping device when it is normally placed, such as the X direction; the second direction is the height of the battery clamping device when it is normally placed, such as the Z direction; and the third direction is the width of the battery clamping device when it is normally placed, such as the Y direction. In this application, the first direction (X), the second direction (Z), and the third direction (Y) are perpendicular to each other.

[0039] It can be understood that the mutual perpendicularity in this application is not absolute perpendicularity, and the approximate perpendicularity caused by processing errors and assembly errors (for example, the angle between two structural features is 89.9°) is also within the range of mutual perpendicularity in this application.

[0040] See also Figures 1 to 2 As shown, Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a battery clamping device provided by the present application is shown. Figure 1 ; Figure 2 A schematic diagram of the three-dimensional structure of an embodiment of a battery clamping device provided by the present application is shown. Figure 2 ;in, Figure 2 The middle limit top plate 40 is hidden.

[0041] In some embodiments, the battery clamping device includes: a base 10, a first clamping assembly 20, a second clamping assembly 30, and a limiting top plate 40. The base 10 has a battery placement area 11; the first clamping assembly 20 is located to one side of the battery placement area 11 along a first direction and has a first clamp 21 that can move toward the battery placement area 11 along the first direction.

[0042] The second clamping assembly 30 is located on the side of the battery placement area 11 away from the first clamping assembly 20 along the first direction, wherein the second clamping assembly 30 is provided with a second clamp 31 that can move toward the first clamp 21 along the first direction; the limiting top plate 40 is located at the top of the battery placement area 11 along the second direction, and is provided with a first through groove 41 corresponding to the battery placement area 11.

[0043] In this embodiment of the present application, by providing a first clamping assembly 20 and a second clamping assembly 30 to clamp the target battery from both sides, the battery can be secured during the sealing operation and the battery housing located in the battery placement area 11 can be squeezed to expel gas from the battery. A limiting top plate 40 is provided on top of the battery placement area 11. The limiting top plate 40 has a first through-slot 41 corresponding to the battery placement area 11, allowing an external welding head to perform welding operations on the battery through the first through-slot 41.

[0044] For example, the first and second clamps 21 and 31 squeeze the battery from both sides, increasing the contact area and enhancing the squeezing effect. This reduces the battery's thickness and makes its thickness distribution more uniform. This also leaves space for gases generated during subsequent use, reducing the risk of battery failure and further extending its service life.

[0045] In some embodiments, the base 10 is further provided with a third bracket 15 , which is used to support the limiting top plate 40 along the second direction, so that the above-mentioned multiple components are all covered under the limiting top plate 40 .

[0046] Combine Figure 3 As shown, Figure 3 A top view of an embodiment of a first clamp 21 and a second clamp 31 of a battery clamping device provided by the present application is shown.

[0047] In some embodiments, the first clamp 21 includes a plurality of first partitions 210, which are spaced apart along a third direction and form a plurality of first clamping spaces 211; or the second clamp 31 includes a plurality of second partitions 310, which are spaced apart along a third direction and form a second clamping space 311.

[0048] In the embodiment of the present application, a first partition 210 is added to the first clamp 21, and a second partition 310 is added to the second clamp 31, so that the first partition 210 and the second partition 310 can clamp and press multiple batteries. For example, when clamping the battery module, the first partition 210 and the second partition 310 are respectively embedded in the gap between two adjacent batteries, thereby squeezing the shell on the side with a larger surface area of ​​the battery, thereby increasing the plane squeezing amount. For example, each single battery is located in the first squeezing space and the second space. In some application scenarios, metal gaskets can also be provided on the contact surface of the first partition 210 and the second partition 310 with the battery to facilitate flat contact with the battery.

[0049] In some embodiments, the first partition 210 is provided with a corrugated step 22 on one side along the third direction, and the second partition 310 is provided with a corrugated step 22 on the other side along the third direction.

[0050] In the embodiment of the present application, uneven corrugated steps 22 are provided on opposite sides of the first partition 210 and the second partition 310 to facilitate driving the metal gasket into the gap between the two adjacent batteries, and allowing the metal gasket to squeeze the side of the battery to form an inward concave extrusion, thereby increasing the gas discharge volume inside the battery, and thus enabling the interior of the battery to be in a negative pressure state after welding and sealing.

[0051] In some embodiments, when the first clamp 21 and the second clamp 31 clamp the target battery along the first direction, the first separator 210 and the second separator 310 at least partially overlap along the first direction.

[0052] Exemplarily, the corrugated step 22 is located on opposite sides of the first partition 210 and the second partition 310, so that the first clamp 21 and the second clamp 31 are misaligned to a certain extent when clamping the battery, ensuring that the metal gaskets located on the first partition 210 and the second partition 310 can be completely fitted and squeezed against the side of the battery, that is, ensuring that the battery is covered and squeezed by the first clamp 21 and the second clamp 31.

[0053] See also Figure 4 As shown, Figure 4 A schematic diagram of the three-dimensional structure of an embodiment of a battery clamping device provided by the present application is shown. Figure 3 .

[0054] In some embodiments, combined Figure 2 and Figure 4 As shown, the battery placement area 11 is provided with a battery material platform 110 and a lifting assembly 111 connected to the battery material platform 110. The battery material platform 110 is used to place the target battery, and the lifting assembly 111 is used to drive the battery material platform 110 to move along the second direction, so that the target battery located in the battery material platform 110 can pass through the first through groove 41 along the second direction.

[0055] Furthermore, the base 10 is further provided with a second through slot 12 , and the lifting assembly 111 is embedded in the second through slot 12 along the second direction.

[0056] In the embodiment of the present application, a battery platform 110 is provided to facilitate the cooperation of a lifting assembly 111 to lift the battery, and the battery cover of the battery is allowed to protrude from the first through slot 41 to the limiting top plate 40, thereby increasing the welding working space. Among them, the lifting assembly is embedded in the second through slot 12, that is, the lifting assembly can pass through the second through slot 12 and fold under the base 10, so that the battery platform 110 is flush with the upper surface of the base 10. Therefore, an external transmission device can be connected to the battery platform 110 and directly transmit the battery to it, or after the welding and sealing is completed, the battery platform 110 can be transmitted to an external transmission device, thereby improving production efficiency.

[0057] For example, Figure 2 The middle lifting assembly 111 is in the lifting state. Figure 4 The middle lifting assembly 111 is in a compressed state. The lifting assembly 111 includes a telescopic column connected to the battery material platform 110 and a driving device capable of driving the telescopic column to perform a lifting action.

[0058] See also Figures 5 and 6 As shown, Figure 5 A front view of an embodiment of a battery clamping device provided by the present application is shown; Figure 6 A top view of an embodiment of a battery clamping device provided by the present application is shown.

[0059] In some embodiments, the base 10 is further provided with a first bracket 13 and a second bracket 14 . The first bracket 13 and the second bracket 14 are located on both sides of the battery placement area 11 along the first direction.

[0060] In the embodiment of this application, Figure 5 As shown, the first bracket 13 supports the first clamp 21, and the second bracket 14 supports the second clamp 31, so that the middle of the battery that can be lifted by the first clamp 21 and the second clamp 31 when moving along the first direction can be aligned to avoid collision with other devices.

[0061] In some embodiments, the first clamping assembly 20 further includes a first driving cylinder 23, which is used to drive the first clamp 21 to move along the first direction; the second clamping assembly 30 further includes a second driving cylinder 32, which is used to drive the second clamp 31 to move along the first direction.

[0062] In the embodiment of the present application, the first clamp 21 and the second clamp 31 are driven by the first driving cylinder 23 and the second driving cylinder 32 respectively, so that the first clamp 21 and the second clamp 31 can operate independently of each other. For example, the first clamp 21 can be started first, and then the second clamp 31 can be started, or the second clamp 31 can be started first, and then the first clamp 21 can be started, or the first clamp 21 and the second clamp 31 can be started at the same time.

[0063] In some embodiments, the first clamping assembly 20 also includes a first sliding member 24, which is respectively connected to the first driving cylinder 23 and the first clamp 21; the second clamping assembly 30 also includes a second sliding member 33, which is respectively connected to the second driving cylinder 32 and the second clamp 31; wherein, the first bracket 13 is provided with a first guide rail 130 that cooperates with the first sliding member 24; the second bracket 14 is provided with a second guide rail 140 that cooperates with the second sliding member 33.

[0064] In the embodiment of the present application, by adding the first guide rail 130 and the second guide rail 140, the moving trajectories of the first clamp 21 and the second clamp 31 can be limited respectively, and the loss of the first driving cylinder 23 driving the first clamp 21 back and forth and the loss of the second driving cylinder 32 driving the second clamp 31 back and forth can be reduced.

[0065] The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, should be included in the protection scope of the present invention.

Claims

1. A battery clamping device, characterized in that: include: A base, wherein the base is provided with a battery placement area; a first clamping assembly, the first clamping assembly being located on one side of the battery placement area along a first direction and being provided with a first clamp capable of moving toward the battery placement area along the first direction; a second clamping assembly, the second clamping assembly being located on a side of the battery placement area away from the first clamping assembly along the first direction, wherein the second clamping assembly is provided with a second clamp capable of moving toward the first clamp along the first direction; A limiting top plate is located at the top of the battery placement area along the second direction and is provided with a first through groove corresponding to the battery placement area.

2. The battery clamping device according to claim 1, characterized in that: The battery placement area is provided with a battery platform and a lifting assembly connected to the battery platform. The battery platform is used to place the target battery, and the lifting assembly is used to drive the battery platform to move along the second direction so that the target battery located in the battery platform can pass through the first through groove along the second direction.

3. The battery clamping device according to claim 2, characterized in that: The base is further provided with a second through slot, and the lifting assembly is embedded in the second through slot along the second direction.

4. The battery clamping device according to claim 1, characterized in that: The first clamp includes a plurality of first partitions, which are spaced apart along the third direction and form a plurality of first clamping spaces; and / or The second clamp includes a plurality of second partitions, which are spaced apart along the third direction and form a second clamping space.

5. The battery clamping device according to claim 4, characterized in that: The first partition plate is provided with a corrugated step on one side along the third direction, and the second partition plate is provided with a corrugated step on the other side along the third direction.

6. The battery clamping device according to claim 5, characterized in that: When the first clamp and the second clamp clamp the target battery along the first direction, the first separator and the second separator at least partially overlap along the first direction.

7. The battery clamping device according to claim 1, characterized in that: The base is further provided with a first bracket and a second bracket, and the first bracket and the second bracket are located on both sides of the battery placement area along the first direction.

8. The battery clamping device according to claim 1, characterized in that: The first clamping assembly further includes a first driving cylinder, which is used to drive the first clamp to move along the first direction; the second clamping assembly further includes a second driving cylinder, which is used to drive the second clamp to move along the first direction.

9. The battery clamping device according to any one of claims 7 to 8, characterized in that: The first clamping assembly also includes a first sliding member, which is respectively connected to the first driving cylinder and the first clamp; the second clamping assembly also includes a second sliding member, which is respectively connected to the second driving cylinder and the second clamp; wherein, the first bracket is provided with a first guide rail that cooperates with the first sliding member; the second bracket is provided with a second guide rail that cooperates with the second sliding member.

10. The battery clamping device according to any one of claims 1 to 8, characterized in that: The base is further provided with a third bracket, and the third bracket is used to support the limiting top plate along the second direction.

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