Laminated battery hot-pressing die
By designing a hot press mold for battery lamination processing, the problem of difficult to maintain accurate and neutral position of the battery pole sheet during lamination processing is solved, and higher accuracy and alignment are achieved, and the safety and performance of the battery are improved.
Patent Information
- Application Number
- CN202421434173.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-06-21
AI Technical Summary
During the process of battery lamination processing, it is difficult to maintain an accurate neutral position of all poles, which makes it difficult to ensure the accuracy and flatness of the lamination process, and poses safety hazards.
A laminated battery hot press mold is designed, including a placement assembly and a pressing cover. By setting a placement housing, a placement cavity and a placement plate, the battery cell can be placed in a defined position, increasing the accuracy of manual alignment, and pushing the processed laminated battery from the mold through the pressing plate.
It effectively improves the accuracy and alignment during lamination processing, ensures that all pole pieces maintain accurate neutral position, reduces manual operation errors, and improves battery safety and performance.
Smart Images
Figure CN222995468U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery stacking processing, in particular to a hot pressing die for stacked batteries. Background Art
[0002] Battery stacking technology, especially the stacking technology of lithium-ion batteries, is currently experiencing rapid development and innovation. The stacking technology has become one of the mainstream methods for manufacturing high-performance lithium batteries and is widely used in fields such as electric vehicles (EVs), energy storage systems, and wearable devices.
[0003] In battery stacking processing, a manual processing method can be adopted, and the positive and negative electrode sheets and diaphragms of the battery are alternately stacked by hand. Although this operation method has relatively low efficiency, it can provide high flexibility and precision control.
[0004] Currently, the stacking process has extremely high requirements for the accuracy and flatness of the electrode sheets. If there are deviations in the stacking process, it may cause problems in the use of the battery and pose a safety hazard. And in the process of manually stacking batteries, there is a problem that it is difficult to keep all electrode sheets in an accurate neutral position. Summary of the Utility Model
[0005] In view of the above analysis, the utility model aims to provide a hot pressing die for stacked batteries to solve the problem in the prior art that it is difficult to keep all electrode sheets in an accurate neutral position during the processing of stacked batteries.
[0006] The purpose of the utility model is mainly achieved through the following technical solutions:
[0007] A hot pressing die for stacked batteries includes a placement component and a pressing cover; the placement component is used to place the battery cells that need to be stacked, the shape of the pressing cover matches that of the placement component, and the pressing cover can be connected to or separated from the placement component;
[0008] The placement component includes a placement housing and a placement cavity, and the placement cavity matching the shape of the battery cell is arranged on the placement housing;
[0009] The pressing cover includes a pressing housing and a pressing plate. When the pressing cover is connected to the placement component, the pressing plate can push the processed stacked battery out of the placement cavity.
[0010] Further, the pressing housing has a cavity with the same shape as the placement cavity, the shape of the pressing plate matches the cavity of the pressing housing, and the pressing plate is placed in the cavity of the pressing housing.
[0011] Further, a compression spring is arranged on the pressing plate. The pressing plate is connected to the bottom plate through the compression spring, and the bottom plate is connected to the pressing shell. When the pressing plate is not under pressure, the pressing plate protrudes from the cavity of the pressing shell, and the protruding height of the pressing plate is the same as the height of the processed laminated battery.
[0012] Further, the bottom plate and the pressing shell are connected by an elastic cord, and a baffle is also arranged on the surface of the pressing shell where it is connected to the bottom plate.
[0013] Further, the placing assembly further includes a placing plate. The shape of the placing plate matches the placing cavity. The placing plate is placed in the placing cavity and forms a placing groove for placing the battery core with the placing cavity.
[0014] Further, a pressing groove is arranged on the surface of the placing shell that contacts the plane for placing the mold. A pick-up block and a spring are arranged on the placing plate, and the pick-up block and the spring are placed in the pressing groove.
[0015] Further, a fixing column is arranged on the pick-up block, a fixing hole is arranged in the pressing groove, and the fixing column cooperates with the fixing hole. Pressing the pick-up block can make the fixing column leave the fixing hole.
[0016] Further, the placing assembly further includes a connection hole, and the pressing cover further includes a connection block. The connection block cooperates with the connection hole to connect the pressing cover to the placing assembly.
[0017] Further, a first handle and a second handle are further included. The placing shell is connected to the first handle, and the pressing shell is connected to the second handle.
[0018] Further, a first through hole is arranged on the first handle. The height of the second handle is less than the height of the pressing cover. A second through hole is arranged on the second handle. The position and shape of the first handle match those of the second handle, and the position and shape of the first through hole match those of the second through hole.
[0019] Compared with the prior art, the present utility model can at least achieve one of the following beneficial effects:
[0020] (1) For the laminated battery hot pressing mold provided by the present utility model, by arranging the placing shell, the placing cavity and the placing plate, the battery core that needs to be laminated can be placed in the placing groove composed of the placing cavity and the placing plate, thereby limiting the position of the battery core, increasing the accuracy of manual alignment, keeping all the pole pieces in an accurate neutral position, and effectively improving the accuracy and alignment degree in the lamination process.
[0021] (2) By providing connection holes and connection blocks, the pressing cover can be connected to the placement component, and the processed stacked battery can be pushed out of the placement cavity through the pressing plate, facilitating the separation of the processed stacked battery from the mold and preventing damage to the processed stacked battery during the separation process.
[0022] (3) By providing pick-and-place blocks on the placement plate, it is convenient to connect and separate the placement plate from the placement cavity. When the placement plate is inside the placement cavity, the mold can place the battery core to be stacked and process it, and limit the position of the battery core. When the placement plate is removed from the placement cavity, the processed stacked battery can be separated from the mold through the pressing plate;
[0023] (4) By providing a baffle and an elastic rope, the bottom plate can push the pressing plate, thereby completely pushing the processed stacked battery out of the placement cavity, facilitating the separation of the stacked battery from the mold and preventing damage or collision to the processed stacked battery during the separation process from the mold. Description of the Drawings
[0024] The drawings are only for the purpose of showing specific embodiments and are not considered as a limitation to the present utility model. Throughout the drawings, the same reference signs denote the same components.
[0025] Figure 1 It is a schematic diagram of the overall structure of the stacked battery hot pressing mold according to Embodiment 1 of the present utility model;
[0026] Figure 2 It is a schematic diagram of the structure of the placement component according to Embodiment 1 of the present utility model;
[0027] Figure 3 It is a schematic diagram of the structure of the fixing column and the fixing hole according to Embodiment 1 of the present utility model;
[0028] Figure 4 It is a schematic diagram of the structure of the pressing cover according to Embodiment 1 of the present utility model;
[0029] Figure 5 It is a schematic diagram of the structure of the pressing plate according to Embodiment 1 of the present utility model;
[0030] Figure 6 It is a schematic diagram of the structure of the connection between the pressing plate and the pressing housing according to Embodiment 2 of the present utility model.
[0031] Reference Signs:
[0032] 1 - Placing component; 11 - Placing housing; 111 - Pressing groove; 112 - Fixing hole; 12 - Placing cavity; 13 - Connecting hole; 14 - Placing plate; 141 - Picking and placing block; 1411 - Fixing post; 142 - Spring; 2 - Pressing cover; 21 - Pressing housing; 211 - Baffle; 22 - Pressing plate; 221 - Compression spring; 222 - Bottom plate; 223 - Elastic cord; 23 - Connecting block; 3 - First handle; 31 - First through hole; 4 - Second handle; 41 - Second through hole. Detailed implementation mode
[0033] The following combines the attached drawings to specifically describe the preferred embodiments of the present invention. Among them, the attached drawings form a part of this application and are used together with the embodiments of the present invention to explain the principle of the present invention, rather than to limit the scope of the present invention.
[0034] Embodiment 1
[0035] A specific embodiment of the present invention discloses a laminated battery hot pressing mold, as Figure 1 shown, including a placing component 1 and a pressing cover 2. The placing component 1 is used to place the battery cells that need to be laminated. The shape of the pressing cover 2 matches that of the placing component 1. The pressing cover 2 can be connected to or separated from the placing component 1. The pressing cover 2 is used to push out the processed laminated battery from the placing component 1.
[0036] As Figures 1 to 2 shown, the placing component 1 includes a placing housing 11, a placing cavity 12, a connecting hole 13 and a placing plate 14. A placing cavity 12 matching the shape of the battery cell is provided on the placing housing 11. The shape of the placing plate 14 matches that of the placing cavity 12. The placing plate 14 is placed in the placing cavity 12 and forms a placing groove for placing the battery cell with the placing cavity 12, so that the battery cells that need to be laminated can be placed in the placing groove. A connecting hole 13 is provided on the placing housing 11. The connecting hole 13 is used to connect the pressing cover 2.
[0037] Preferably, rounded corners are provided around the placing cavity 12 to avoid damaging the battery cells.
[0038] Preferably, the length of the region of the placing cavity 12 corresponding to the tabs of the battery cell on one side of the long side is greater than the size of the tabs to avoid tab wrinkling and adhesion.
[0039] As Figure 2As shown, a pressing groove 111 is provided on the surface of the placement housing 11 that contacts the plane where the mold is placed. The pressing groove 111 is provided on both sides of the placement plate 14, and the number of pressing grooves 111 is multiple. A pick-up block 141 and a spring 142 are provided on the placement plate 14. The pick-up block 141 and the spring 142 are placed in the pressing groove 111. The pick-up block 141 is connected to the placement plate 14 through the spring 142. When the mold is placed on the plane, the surface of the pick-up block 141 that contacts the plane is coplanar with the surface of the placement plate 14 that contacts the plane, so that the placement plate 14 remains horizontal. As Figure 3 shown, a fixing post 1411 is provided on the pick-up block 141, and a fixing hole 112 is provided in the pressing groove 111. The fixing post 1411 cooperates with the fixing hole 112 to fix the placement plate 14 in the placement cavity 12.
[0040] When it is necessary to take out the placement plate 14 from the placement cavity 12, the pick-up block 141 is squeezed in the direction close to the placement plate 14, so that the spring 142 is compressed, and at the same time the fixing post 1411 is separated from the fixing hole 112, so as to remove the placement plate 14 from the placement cavity 12; when it is necessary to put the placement plate 14 into the placement cavity 12, the pick-up block 141 is squeezed in the direction close to the placement plate 14, so that the spring 142 is compressed, the placement plate 14 is put into the placement cavity 12, so that the positions of the fixing post 1411 and the fixing hole 112 correspond, stop squeezing the pick-up block 141, and the spring 142 resets and pushes the pick-up block 141 to move in the direction of the fixing hole 112, so that the fixing post 1411 enters the fixing hole 112, thereby fixing the placement plate 14 in the placement cavity 12.
[0041] As Figure 4 shown, the pressing cover 2 includes a pressing housing 21, a pressing plate 22 and a connecting block 23. A connecting block 23 is provided on the pressing housing 21. The connecting block 23 cooperates with the connecting hole 13 to enable the pressing cover 2 to be connected to the placement assembly 1. The shape of the pressing housing 21 is the same as that of the placement housing 11. The pressing housing 21 has a cavity with the same shape as the placement cavity 12. The shape of the pressing plate 22 matches the cavity of the pressing housing 21. The pressing plate 22 is placed in the cavity of the pressing housing 21. When the pressing plate 22 is not under pressure, the pressing plate 22 protrudes from the cavity of the pressing housing 21. The protruding height of the pressing plate 22 is the same as the height of the processed stacked battery. The pressing plate 22 can push the processed stacked battery out of the placement cavity 12.
[0042] As Figure 5As shown in the figure, a compression spring 221 is provided on the pressing plate 22. The pressing plate 22 is connected to the bottom plate 222 through the compression spring 221, and the bottom plate 222 is connected to the pressing housing 21. When the pressing cover 2 is connected to the placement assembly 1, the position and shape of the pressing plate 22 cooperate with the placement cavity 12. The stacked batteries processed in the placement cavity 12 press the pressing plate 22, causing the compression spring 221 to compress. After the placement plate 14 is removed from the placement cavity 12 by the above method, the compression spring 221 resets and pushes the pressing plate 22 into the placement cavity 12, pushing the processed stacked battery cells out of the placement cavity 12, thereby facilitating the removal of the processed stacked battery cells from the mold.
[0043] As Figure 1 shown, the mold further includes a first handle 3 and a second handle 4. The first handle 3 is connected to the placement housing 11, and the second handle 4 is connected to the pressing housing 21; a first through hole 31 is provided on the first handle 3, facilitating the staff to fix or move the placement assembly 1. As Figure 4 shown, the height of the second handle 4 is less than the height of the pressing cover 2. A second through hole 41 is provided on the second handle 4. The second through hole 41 facilitates the staff to fix or move the pressing cover 2. The position and shape of the first handle 3 cooperate with those of the second handle 4, and the position and shape of the first through hole 31 cooperate with those of the second through hole 41. When the pressing cover 2 is connected to the placement assembly 1, since the height of the second handle 4 is less than the height of the pressing housing 21, there is a gap between the first handle 3 and the second handle 4, thereby facilitating the staff to move the first handle 3 and the second handle 4 in opposite directions through the gap, separating the placement assembly 1 from the pressing cover 2.
[0044] Embodiment 2
[0045] Another specific embodiment of the present utility model discloses a stacked battery hot pressing mold. As Figure 6 shown, the difference from Embodiment 1 is that the bottom plate 222 and the pressing housing 21 are connected by an elastic rope 223, and a baffle 211 is further provided on the surface of the pressing housing 21 where it is connected to the bottom plate 222. When the processed stacked battery is not completely pushed out of the placement cavity 12 by the pressing plate 22, press the bottom plate 222 in the direction of the placement cavity 12 to make the bottom plate 222 push the pressing plate 22 to continue to move into the placement cavity 12, completely pushing the processed stacked battery out of the placement cavity 12, thereby separating the processed stacked battery from the mold.
[0046] A baffle 211 is further provided on the surface of the pressing housing 21 where it is connected to the bottom plate 222 to prevent the bottom plate 222 from being pushed out of the cavity of the pressing housing 21 when the pressing plate 22 is squeezed by the stacked battery in the placement cavity 12, causing the compression spring 221 to compress.
[0047] Compared with the prior art, the laminated battery hot pressing die provided by the utility model can place the battery cells to be laminated in the placement groove formed by the placement cavity 12 and the placement plate 14 by setting the placement housing 11, the placement cavity 12 and the placement plate 14, so as to limit the positions of the battery cells, improve the accuracy of manual alignment, keep all the pole pieces in an accurate neutral position, and effectively improve the accuracy and alignment degree in the lamination process; by setting the connecting holes 13 and the connecting blocks 231, the pressing cover 2 can be connected with the placement assembly 1, and the processed laminated battery can be pushed out of the placement cavity 12 through the pressing plate 22, which is convenient for separating the processed laminated battery from the die and preventing the processed laminated battery from being damaged during the separation process; by setting the pick-up and placement blocks 141 on the placement plate 14, it is convenient to connect and separate the placement plate 14 from the placement cavity 12. When the placement plate 14 is in the placement cavity 12, the die can place the battery cells to be laminated and limit the positions of the battery cells. When the placement plate 14 is removed from the placement cavity 12, the processed laminated battery can be separated from the die through the pressing plate 22; by setting the baffle 211 and the elastic cord 223, the bottom plate 222 can push the pressing plate 22, so as to completely push the processed laminated battery out of the placement cavity 12, which is convenient for separating the laminated battery from the die.
[0048] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered by the protection scope of the present utility model.
Claims
1. A laminated battery hot pressing mold, characterized in that: It comprises a placement component (1) and a pressing cover (2); the placement component (1) is used to place the battery core that needs to be laminated, the shape of the pressing cover (2) matches the placement component (1), and the pressing cover (2) can be connected to or separated from the placement component (1); The placement assembly (1) comprises a placement shell (11) and a placement cavity (12); the placement shell (11) is provided with the placement cavity (12) matching the shape of the battery core; The pressing cover (2) comprises a pressing shell (21) and a pressing plate (22); when the pressing cover (2) is connected to the placement assembly (1), the pressing plate (22) can push the processed laminated battery out of the placement cavity (12).
2. The hot pressing mold for laminated batteries according to claim 1, characterized in that: The pressing shell (21) has a cavity with the same shape as the placement cavity (12); the shape of the pressing plate (22) matches the cavity of the pressing shell (21); and the pressing plate (22) is placed in the cavity of the pressing shell (21).
3. The hot pressing mold for laminated batteries according to claim 2, characterized in that: A compression spring (221) is arranged on the pressing plate (22), and the pressing plate (22) is connected to the bottom plate (222) via the compression spring (221), and the bottom plate (222) is connected to the pressing shell (21). When the pressing plate (22) is not subjected to pressure, the pressing plate (22) protrudes from the cavity of the pressing shell (21), and the protruding height of the pressing plate (22) is the same as the height of the processed laminated battery.
4. The hot pressing mold for laminated batteries according to claim 3, characterized in that: The bottom plate (222) is connected to the pressing shell (21) via an elastic rope (223), and a baffle (211) is also provided on the surface where the pressing shell (21) is connected to the bottom plate (222).
5. The hot pressing mold for laminated batteries according to claim 1, characterized in that: The placement assembly (1) further comprises a placement plate (14), the shape of which matches the placement cavity (12); the placement plate (14) is placed in the placement cavity (12) and forms a placement groove for placing the battery cell together with the placement cavity (12).
6. The hot pressing mold for laminated batteries according to claim 5, characterized in that: A pressing groove (111) is arranged on the surface of the placement shell (11) in contact with the plane on which the mold is placed, and a pick-and-place block (141) and a spring (142) are arranged on the placement plate (14), and the pick-and-place block (141) and the spring (142) are placed in the pressing groove (111).
7. The hot pressing mold for laminated batteries according to claim 6, characterized in that: A fixing column (1411) is arranged on the pick-and-place block (141), and a fixing hole (112) is arranged in the pressing groove (111). The fixing column (1411) cooperates with the fixing hole (112), and pressing the pick-and-place block (141) can cause the fixing column (1411) to leave the fixing hole (112).
8. The hot pressing mold for laminated batteries according to claim 1, characterized in that: The placement component (1) further comprises a connection hole (13), and the pressing cover (2) further comprises a connection block (23), wherein the connection block (23) cooperates with the connection hole (13) so that the pressing cover (2) is connected to the placement component (1).
9. The hot pressing mold for laminated batteries according to any one of claims 1 to 8, characterized in that: It also comprises a first handle (3) and a second handle (4), wherein the placement shell (11) is connected to the first handle (3), and the pressing shell (21) is connected to the second handle (4).
10. The hot pressing mold for laminated batteries according to claim 9, characterized in that: A first through hole (31) is provided on the first handle (3); the height of the second handle (4) is smaller than the height of the pressing cover (2), and a second through hole (41) is provided on the second handle (4); the position and shape of the first handle (3) match those of the second handle (4), and the position and shape of the first through hole (31) match those of the second through hole (41).