Briquetting assembly and cell activation device

Abstract

The application relates to the technical field of battery processing, and discloses a briquetting assembly and a battery cell activation device. The briquetting assembly comprises a rolling piece, an upper briquetting piece and a lower briquetting piece. The upper briquetting piece and the lower briquetting piece are arranged at intervals. Two opposite surfaces of the upper briquetting piece and the lower briquetting piece are respectively provided with grooves. The rolling piece is arranged between the two grooves. The groove walls of the two grooves are both arranged in arc-shaped structures. The outer wall of the rolling piece is in sliding contact with the groove walls of the two grooves respectively. The lower briquetting piece rotates around the rolling piece to be inclined relative to the upper briquetting piece. The application improves the adaptability to the surface of the battery cell.

Description

Technical Field

[0001] This application relates to the field of battery processing technology, specifically to a bridging assembly and a cell activation device. Background Technology

[0002] During the battery cell production process, the activation process requires full and uniform contact with the top surface of the battery cell to improve the uniformity of pressure transmission during activation. In existing technologies, the upper pressure block for battery cell activation mainly adopts an elastic material-filled pressure block. By embedding elastomers such as rubber and silicone at the bottom of the pressure block, the deformation of the material is used to buffer local pressure differences. This solution was used in early 3C (Computer, Communication, and Consumer Electronics) battery cell production lines.

[0003] However, although elastic material-filled pressure blocks have a certain deformation compensation capability, they are poorly adaptable to large deformations on the surface of the battery cell, and the elastic material is prone to creep aging under long-term pressure, leading to pressure decay and failure of the compensation function. Utility Model Content

[0004] This application provides a briquetting assembly and a cell activation device to solve the problem of poor adaptability of elastic material-filled briquetting assemblies to large deformations of the cell surface.

[0005] In a first aspect, this application provides a pressure block assembly, including a rolling element, an upper pressure block, and a lower pressure block. The upper pressure block and the lower pressure block are spaced apart. The two opposite surfaces of the upper pressure block and the lower pressure block are respectively provided with grooves. The rolling element is disposed between the two grooves, and the groove walls of the two grooves are both configured as arc-shaped structures. The outer wall of the rolling element slides in contact with the groove walls of the two grooves respectively, so that the lower pressure block rotates around the rolling element to tilt relative to the upper pressure block.

[0006] Beneficial effects: Through the sliding engagement of the rolling element with the grooves of the upper and lower pressure blocks, the lower pressure block can adaptively tilt around the rolling element. The flexible freedom of the rolling contact compensates for the large deformation of the cell surface, avoiding the problem of uneven contact caused by the limited deformation capacity of traditional elastic material filled pressure blocks, and eliminating the risk of aging and failure of elastic materials.

[0007] In one alternative embodiment, the device further includes multiple elastic components, which are spaced apart circumferentially between the upper and lower pressure blocks, causing the lower pressure block to tend to move from an inclined state to a state parallel to the upper pressure block.

[0008] Beneficial effects: Multiple elastic components are distributed circumferentially to provide uniform elastic restoring force for the lower pressing block. This allows the lower pressing block to tilt under pressure to adapt to the deformation of the battery cell, and it can automatically return to a parallel state after the external force is removed, ensuring the consistency of the initial posture of each pressing action.

[0009] In one alternative implementation, the plurality of elastic components are arranged in pairs, and two of the elastic components in a pair are arranged symmetrically about the rolling element.

[0010] Beneficial effects: The symmetrically arranged elastic components form a balanced elastic support system, suppressing the asymmetrical tilting of the lower pressure block caused by unilateral force, enhancing the posture stability of the lower pressure block during the pressing process, and avoiding local overload.

[0011] In one optional embodiment, the elastic component includes a connector and an elastic element. The connector includes a connecting portion and a limiting portion connected together. The upper pressure block has a through hole, the connecting portion passes through the through hole and is connected to the lower pressure block, a gap is left between the peripheral surface of the connecting portion and the inner wall of the through hole, and the limiting portion abuts against the side of the upper pressure block opposite to the lower pressure block. The elastic element is sleeved on the connecting portion, one end of the elastic element along its axial direction abuts against the lower pressure block, and the other end of the elastic element along its axial direction abuts against the limiting portion.

[0012] Beneficial effects: The design of the gap fit between the connector and the through hole allows the lower block to produce a small displacement when tilted. The combination of the limiting part and the elastic element not only restricts the axial dislodgement of the connector, but also achieves flexible buffering through elastic compression, which improves the dynamic adjustment capability while ensuring the reliability of the structure.

[0013] In one optional embodiment, the lower pressure block has a threaded hole on the side facing the upper pressure block, and the end of the connecting part away from the limiting part along its axial direction is threadedly connected to the threaded hole.

[0014] Beneficial effects: The threaded connection method enables the connector and the lower pressure block to be detachably fixed, which facilitates the assembly, adjustment and maintenance of the elastic components, while ensuring that the connection strength meets the requirements of repeated pressing conditions.

[0015] In one optional embodiment, both the connecting portion and the limiting portion are configured as cylindrical structures, the axes of the connecting portion and the limiting portion coincide, and the diameter of the cross section of the limiting portion perpendicular to the axial direction of the connecting portion is greater than the diameter of the cross section of the through hole perpendicular to the axial direction of the connecting portion.

[0016] Beneficial effects: The coaxial cylindrical structure provides precise axial guidance between the connecting part and the limiting part. The design of the limiting part having a diameter larger than the through hole effectively prevents the connecting parts from coming out in the opposite direction and avoids permanent deformation caused by excessive compression of the elastic parts.

[0017] In an alternative embodiment, a contact block is further included, connected to the side of the lower block away from the upper block.

[0018] Beneficial effects: The contact block is connected to the lower block as an independent component. The material or structure of the contact block can be changed to match the surface characteristics of different battery cells, which improves the versatility of the device and reduces wear on the main components.

[0019] In an alternative implementation, a connecting block is further included, which is connected to the side of the upper pressure block away from the lower pressure block.

[0020] Beneficial effects: As an extension of the upper pressure block, the connecting block provides a standardized force application interface for the driving component, simplifies the docking and installation of the pressure block assembly and the driving component, and enhances the modularity of the overall device.

[0021] In one alternative implementation, the rolling element is configured as a spherical structure.

[0022] Beneficial effects: The spherical structure of the rolling element forms a multi-degree-of-freedom rolling contact within the groove, enabling the lower pressure block to achieve omnidirectional tilt adjustment capability and significantly improving its ability to follow complex deformations on the surface of the battery cell.

[0023] Secondly, this application also provides a battery cell activation device suitable for activating a battery cell, comprising a support, a driving member, and a support platform. The driving member is disposed on the support. The support platform is disposed on the support and is adapted to support the battery cell. The output end of the driving member is adjacent to the connecting block of the pressing block assembly, the pressing block assembly is located between the driving member and the support platform, and the driving member is adapted to drive the pressing block assembly to move toward the support platform, such that the contact pressing block of the pressing block assembly abuts against the battery cell.

[0024] Beneficial effects: The linkage design of the drive component and the pressure block assembly enables precise control of the cell pressing action. Combined with the rolling component tilt compensation and the elastic component reset function, it ensures the uniformity of pressure distribution and contact reliability when the cell is activated. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a pressing assembly according to an embodiment of this application; Figure 2This is a schematic diagram of the structure of a battery cell activation device according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures: 1. Rolling element; 2. Upper pressure block; 3. Lower pressure block; 4. Groove; 5. Elastic component; 501. Connector; 5011. Connecting part; 5012. Limiting part; 502. Elastic element; 6. Threaded hole; 7. Contact pressure block; 8. Connecting block; 9. Bracket; 10. Driving element; 11. Bearing platform; 12. Battery cell. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] The following is combined with Figures 1 to 2 This describes an embodiment of the present application.

[0030] According to an embodiment of this application, in one aspect, a pressure block assembly is provided, including a rolling element 1, an upper pressure block 2 and a lower pressure block 3. The upper pressure block 2 and the lower pressure block 3 are spaced apart. The two opposite surfaces of the upper pressure block 2 and the lower pressure block 3 are respectively provided with grooves 4. The rolling element 1 is disposed between the two grooves 4, and the groove walls of the two grooves 4 are both set as arc-shaped structures. The outer wall of the rolling element 1 slides in contact with the groove walls of the two grooves 4 respectively, so that the lower pressure block 3 rotates around the rolling element 1 to tilt relative to the upper pressure block 2.

[0031] Understandably, the upper pressure block 2 is connected to the driving end of the driving component 10, thereby fixing the position of the upper pressure block 2 relative to the lower pressure block 3. When the lower pressure block 3 is in contact with the battery cell 12, the lower pressure block 3 can tilt relative to the upper pressure block 2 under the action of the protrusion on the surface of the battery cell 12. Specifically, the lower pressure block 3 can be offset from the center of the rolling component 1 by the rolling component 1 rolling within the two grooves 4.

[0032] It should be noted that the upper pressure block 2 and the lower pressure block 3 are spaced apart, that is, when the two opposite surfaces of the upper pressure block 2 and the lower pressure block 3 are parallel, there is a gap between them, which can be used to coordinate the tilting action of the lower pressure block 3 relative to the upper pressure block 2.

[0033] In this embodiment, the sliding engagement between the rolling element 1 and the grooves 4 of the upper and lower pressure blocks 2 and 3 allows the lower pressure block 3 to adaptively tilt around the rolling element 1. The flexible freedom of the rolling contact compensates for the large deformation of the surface of the battery cell 12, avoiding the problem of uneven contact caused by the limited deformation capacity of traditional elastic material-filled pressure blocks, and eliminating the risk of aging and failure of elastic materials.

[0034] In one embodiment, the device further includes multiple elastic components 5. These multiple elastic components 5 are arranged circumferentially between the upper pressure block 2 and the lower pressure block 3, so that the lower pressure block 3 tends to move from an inclined state to a state parallel to the upper pressure block 2.

[0035] Optionally, multiple elastic components 5 are arranged circumferentially between the upper pressure block 2 and the lower pressure block 3 along the rolling element 1 to form a centrally symmetrical shape.

[0036] Optionally, the elastic component 5 can be configured as an elastic material column, with its first end along its axial direction connected to the upper pressure block 2 and its second end along its axial direction connected to the lower pressure block 3. This enables the lower pressure block 3 to tilt relative to the upper pressure block 2 and to have a tendency to move from the tilted state to a state parallel to the upper pressure block 2.

[0037] In this embodiment, multiple elastic components 5 are distributed circumferentially to provide uniform elastic restoring force for the lower pressing block 3. This allows the lower pressing block 3 to tilt when pressed to adapt to the deformation of the battery cell 12, and it can automatically return to a parallel state after the external force is removed, ensuring the consistency of the initial posture of each pressing action.

[0038] In one embodiment, a plurality of elastic components 5 are arranged in pairs, and two of the elastic components 5 in a pair are arranged symmetrically about the rolling element 1.

[0039] Optionally, two elastic components 5 may be provided, and the two elastic components 5 are arranged symmetrically about the center of the rolling element 1.

[0040] In this embodiment, the symmetrically arranged elastic components 5 form a balanced elastic support system, which suppresses the asymmetrical tilting of the lower pressure block 3 caused by unilateral force, enhances the posture stability of the lower pressure block 3 during the pressing process, and avoids local overload.

[0041] In one embodiment, the elastic component 5 includes a connector 501 and an elastic element 502. The connector 501 includes a connecting portion 5011 and a limiting portion 5012 connected together. The upper pressure block 2 has a through hole, the connecting portion 5011 passes through the through hole and is connected to the lower pressure block 3. A gap is left between the peripheral surface of the connecting portion 5011 and the inner wall of the through hole, and the limiting portion 5012 abuts against the side of the upper pressure block 2 opposite to the lower pressure block 3. The elastic element 502 is sleeved on the connecting portion 5011. One end of the elastic element 502 along its axial direction abuts against the lower pressure block 3, and the other end of the elastic element 502 along its axial direction abuts against the limiting portion 5012.

[0042] Optionally, the elastic element 502 can be configured as a spring structure.

[0043] Optionally, the connecting part 5011 and the limiting part 5012 are constructed as an integral structure and constitute the connector 501.

[0044] In this embodiment, the design of the connector 501 and the through hole clearance fit allows the lower pressure block 3 to produce a small displacement when tilted. The combination of the limiting part 5012 and the elastic member 502 not only restricts the axial dislodgement of the connector 501, but also achieves flexible buffering through elastic compression, thereby improving the dynamic adjustment capability while ensuring structural reliability.

[0045] In one embodiment, the lower pressure block 3 is provided with a threaded hole 6 on the side facing the upper pressure block 2, and the end of the connecting part 5011 away from the limiting part 5012 along its axial direction is connected to the threaded hole 6 by a thread.

[0046] In this embodiment, the threaded connection enables the connector 501 and the lower pressure block 3 to be detachably fixed, which facilitates the assembly, adjustment, maintenance and replacement of the elastic component 5, while ensuring that the connection strength meets the requirements of repeated pressing conditions.

[0047] In one embodiment, both the connecting portion 5011 and the limiting portion 5012 are cylindrical structures, with their axes coinciding. The diameter of the cross section of the limiting portion 5012 perpendicular to the axial direction of the connecting portion 5011 is larger than the diameter of the cross section of the through hole perpendicular to the axial direction of the connecting portion 5011.

[0048] In this embodiment, the connecting part 5011 and the limiting part 5012 of the coaxial cylindrical structure form a precise axial guide. The design of the limiting part 5012 having a diameter larger than the through hole effectively prevents the connecting part 501 from coming out in the opposite direction and avoids permanent deformation caused by excessive compression of the elastic part 502.

[0049] In one embodiment, a contact block 7 is also included, which is connected to the side of the lower block 3 away from the upper block 2.

[0050] Optionally, a snap-fit ​​groove can be provided on the bottom surface of the lower pressure block 3, and a snap-fit ​​block can be provided on the top surface of the contact pressure block 7. When connecting the lower pressure block 3 and the contact pressure block 7, the snap-fit ​​block and the snap-fit ​​groove can be snapped together to achieve the connection between the two.

[0051] In this embodiment, the contact block 7 is connected to the lower block 3 as an independent component. The material or structure of the contact block 7 can be changed according to the surface characteristics of different battery cells 12, thereby improving the versatility of the device and reducing the wear of the main components.

[0052] In one embodiment, a connecting block 8 is also included, which is connected to the side of the upper pressure block 2 away from the lower pressure block 3.

[0053] In this embodiment, the connecting block 8 serves as an extension of the upper pressure block 2, providing a standardized force application interface for the driving component 10, simplifying the docking and installation of the pressure block assembly and the driving component 10, and enhancing the modularity of the overall device.

[0054] In one embodiment, the rolling element 1 is configured as a spherical structure.

[0055] In this embodiment, the spherical rolling element 1 forms a multi-degree-of-freedom rolling contact in the groove 4, enabling the lower pressure block 3 to obtain omnidirectional tilt adjustment capability, which significantly improves the ability to follow complex deformations on the surface of the battery cell 12.

[0056] According to an embodiment of this application, another aspect provides a battery cell 12 activation device suitable for activating the battery cell 12, comprising a support 9, a drive member 10, and a support platform 11. The drive member 10 is disposed on the support 9. The support platform 11 is disposed on the support 9 and is adapted to support the battery cell 12. The output end of the drive member 10 is adjacent to the connecting block 8 of the pressure block assembly, the pressure block assembly is located between the drive member 10 and the support platform 11, and the drive member 10 is adapted to drive the pressure block assembly to move toward the support platform 11, such that the contact block 7 of the pressure block assembly abuts against the battery cell 12.

[0057] Optionally, multiple drive units 10 can be provided, and multiple corresponding pressing blocks, battery cells 12 and bearing platforms 11 can also be provided, with corresponding quantities.

[0058] In this embodiment, the precise control of the pressing action of the battery cell 12 is achieved through the linkage design of the drive component 10 and the pressing block assembly. Combined with the tilt compensation of the rolling component 1 and the reset function of the elastic component 5, the uniformity of pressure distribution and contact reliability are ensured when the battery cell 12 is activated.

[0059] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A briquetting assembly, characterized in that, include: Roller (1); The upper pressure block (2) and the lower pressure block (3) are spaced apart. The two opposite surfaces of the upper pressure block (2) and the lower pressure block (3) are respectively provided with grooves (4). The rolling element (1) is disposed between the two grooves (4), and the groove walls of the two grooves (4) are both set as arc-shaped structures. The outer wall of the rolling element (1) slides in contact with the groove walls of the two grooves (4), so that the lower pressure block (3) rotates around the rolling element (1) and is inclined relative to the upper pressure block (2).

2. The briquetting assembly according to claim 1, characterized in that, Also includes: Multiple elastic components (5) are provided, and the multiple elastic components (5) are arranged circumferentially between the upper pressure block (2) and the lower pressure block (3) so that the lower pressure block (3) has a tendency to move from an inclined state to a state parallel to the upper pressure block (2).

3. The briquetting assembly according to claim 2, characterized in that, The multiple elastic components (5) are arranged in pairs, and two of the elastic components (5) in a pair are arranged symmetrically about the rolling element (1).

4. The briquetting assembly according to claim 2, characterized in that, The elastic component (5) includes: The connector (501) includes a connecting part (5011) and a limiting part (5012) connected together. The upper pressure block (2) has a through hole. The connecting part (5011) passes through the through hole and is connected to the lower pressure block (3). There is a gap between the circumferential surface of the connecting part (5011) and the inner wall of the through hole. The limiting part (5012) abuts against the side of the upper pressure block (2) away from the lower pressure block (3). An elastic element (502) is sleeved on the connecting part (5011). One end of the elastic element (502) along its axial direction abuts against the lower pressure block (3), and the other end of the elastic element (502) along its axial direction abuts against the limiting part (5012).

5. The briquetting assembly according to claim 4, characterized in that, The lower pressure block (3) has a threaded hole (6) on the side facing the upper pressure block (2), and the end of the connecting part (5011) away from the limiting part (5012) along its axial direction is connected to the threaded hole (6) by a thread.

6. The briquetting assembly according to claim 4, characterized in that, Both the connecting part (5011) and the limiting part (5012) are cylindrical structures. The axes of the connecting part (5011) and the limiting part (5012) coincide. The diameter of the cross section of the limiting part (5012) perpendicular to the axial direction of the connecting part (5011) is larger than the diameter of the cross section of the through hole perpendicular to the axial direction of the connecting part (5011).

7. The briquetting assembly according to claim 1, characterized in that, Also includes: The contact block (7) is connected to the side of the lower block (3) away from the upper block (2).

8. The briquetting assembly according to claim 1, characterized in that, Also includes: The connecting block (8) is connected to the side of the upper pressing block (2) away from the lower pressing block (3).

9. The briquetting assembly according to claim 1, characterized in that, The rolling element (1) is configured as a spherical structure.

10. A cell activation device, suitable for activating a cell (12), characterized in that, include: Support (9); A drive unit (10) is disposed on the bracket (9); A support platform (11) is disposed on the bracket (9), and the support platform (11) is adapted to support the battery cell (12). According to any one of claims 1 to 9, the output end of the drive member (10) is adjacent to the connecting block (8) of the pressing assembly, the pressing assembly is located between the drive member (10) and the support platform (11), and the drive member (10) is adapted to drive the pressing assembly to move toward the support platform (11) such that the contact block (7) of the pressing assembly abuts against the battery cell (12).

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