Cell cover assembly, cell and battery pack

Abstract

This invention relates to the field of battery technology, and discloses a cell cover assembly, a cell, and a battery pack. The cell cover assembly includes a cover body, a first insulating member, a riveting block, and a top cover patch. The first insulating member has a receiving groove formed by the first insulating member body and a raised edge. The riveting block is disposed in the receiving groove, and a first annular groove is formed between the raised edge and the circumferential sidewall of the riveting block. The top cover patch includes a top cover patch body and an annular cover. The annular cover includes a top cover, an inner annular sidewall, and an outer annular sidewall. The inner annular sidewall is connected to the inner ring of the top cover, one end of the outer annular sidewall is connected to the outer ring of the top cover, and the other end is connected to the top cover patch body. The annular cover covers the raised edge, the inner annular sidewall extends into the first annular groove, and the raised edge extends into the second annular groove of the annular cover. This invention ensures that the exposed aluminum area between the cover and the first insulating member is shielded by the annular cover, preventing short circuits caused by metal wires generated during the assembly process of the riveting block or the terminal post coming into contact with the cover body.

Description

Technical Field

[0001] This invention relates to the field of battery technology, specifically to cell cover assemblies, cells, and battery packs. Background Technology

[0002] Lithium-ion batteries, due to their high energy density, long cycle life, and environmental friendliness, have become the core power source for new energy vehicles, energy storage systems, and consumer electronics. As market demands for battery energy density and safety continue to increase, battery structure design is becoming increasingly sophisticated. In particular, the cell cover, as a key component for battery sealing and electrical connection, directly impacts the overall performance of the battery.

[0003] Lithium-ion battery covers typically consist of an aluminum sheet, an upper plastic layer, a riveting block, and terminal posts. The aluminum sheet and the upper plastic layer are insulated from each other through injection molding or assembly, while the riveting block secures the terminal posts and facilitates current transmission. During this process, the edges of the aluminum sheet must be tightly fitted to the upper plastic layer to prevent metal exposure. However, due to injection molding process deviations or assembly tolerances, areas of exposed aluminum may appear at the edges of the aluminum sheet where the upper plastic layer does not completely cover the metal, resulting in exposed metal substrate.

[0004] In the cell cover structure of related technologies, the exposed aluminum area may overlap with the metal wires (such as burrs or processing residues) generated at the edge of the riveting block or terminal post, creating a short circuit risk. In addition, exposed aluminum can also weaken the insulation performance between the busbar and the cover plate, which may cause local breakdown under vibration or thermal expansion conditions, increasing the risk of battery short circuit and thermal runaway. Summary of the Invention

[0005] In view of this, the present invention provides a cell cover assembly, a cell, and a battery pack to solve the problem that the presence of exposed aluminum areas in the cell cover assembly leads to a short circuit risk in the cell.

[0006] In a first aspect, the present invention provides a battery cell cover assembly, including a cover body, a first insulating component, a riveting block, and a top cover patch. A first insulating element is disposed on a first surface of the cover plate body. The first insulating element includes a first insulating element body and a raised edge disposed around the periphery of the first insulating element body. The raised edge and the first insulating element body form a receiving groove. A rivet block is disposed in the receiving groove. A first annular groove is formed between the raised edge and the circumferential sidewall of the rivet block. A top cover patch includes a top cover patch body. The top cover patch body has an assembly hole that avoids the rivet block. The top cover patch also includes an annular cover disposed around the periphery of the assembly hole and protruding from the top cover patch body. The annular cover includes a cover top extending radially along the assembly hole and an inner annular sidewall and an outer annular sidewall extending axially along the assembly hole. One end of the inner annular sidewall is connected to the inner ring of the cover top, and the other end is a free end. One end of the outer annular sidewall is connected to the outer ring of the cover top, and the other end is connected to the top cover patch body. The annular cover covers the raised edge. The inner annular sidewall extends into the first annular groove. Along the direction close to the cover plate body, the annular cover forms a second annular groove. The raised edge extends into the second annular groove.

[0007] Beneficial Effects: The battery cell cover assembly provided by this invention includes a first annular groove formed by a gap between the protruding edge of the first insulating member and the side wall of the riveting block. The annular cover of the top cover patch has a second annular groove that covers the protruding edge. The inner annular side wall extends into the first annular groove, and the protruding edge extends into the second annular groove. Thus, the protruding edge and the annular cover form a nested insulating and sealing structure. This structure ensures that the aluminum leakage area between the cover and the first insulating member is shielded by the annular cover, preventing direct exposure of the metal substrate of the cover. This completely blocks short-circuit paths caused by aluminum leakage and prevents metal wires generated during assembly of the riveting block or electrode from contacting the cover body, ensuring the insulation effect of the battery cell cover assembly.

[0008] In addition, the first annular groove and the second annular groove are connected between the riveting block, the first insulating component and the top cover patch, forming a meandering path, which can significantly extend the insulation distance between the riveting block and the cover plate body, or between the pole post and the cover plate body, and improve the insulation effect of the cell cover plate assembly.

[0009] Furthermore, a gap is provided between the riveting block and the first insulating component to form a first annular groove, which can reduce the metal wires generated during the assembly of the cover plate due to friction or collision, and further reduce the short circuit risk of the battery cell cover plate.

[0010] In one optional embodiment, along the thickness direction of the cover plate body, the height of the protrusion above the first insulating element body is A, in mm, satisfying: 0.7mm≤A≤4mm. Along the thickness direction of the cover plate body, the height of the overlap between the inner ring sidewall of the annular cover and the protrusion is h1, in mm, satisfying: 0.1≤h1 / A≤0.9.

[0011] In one optional embodiment, along the thickness direction of the cover plate body, the surface of the top of the annular cover is lower than the top surface of the riveting block, with a height difference of h2 in mm, satisfying: 0.1mm≤h2≤1mm.

[0012] In one optional embodiment, an assembly gap W1, in mm, is provided between the inner ring sidewall of the annular cover and the riveting block, satisfying: 0.3mm≤W1≤1mm.

[0013] In one optional embodiment, an assembly gap W2, in mm, is provided between the inner ring sidewall and the flange of the annular cover, satisfying: 0.3mm≤W2≤3mm.

[0014] In one optional embodiment, an assembly gap W3, in mm, is provided between the outer ring sidewall and the flange of the annular cover, satisfying: 0.3mm≤W3≤3mm.

[0015] In one alternative embodiment, the cover plate body is provided with a groove, and a first insulating member is disposed in the groove, with a protruding edge extending out of the groove along the thickness direction of the cover plate body.

[0016] In one optional embodiment, two riveting blocks and two first insulating components are provided, and they are spaced apart along the length of the cover plate body. Two mounting holes for the top cover patch and two corresponding holes for the annular cover are provided.

[0017] Secondly, the present invention also provides a battery cell, including a housing, an electrode assembly, and a battery cell cover assembly according to any of the above technical solutions. The housing has a receiving cavity and an open end communicating with the receiving cavity; the electrode assembly is disposed within the receiving cavity of the housing; the battery cell cover assembly is disposed at the open end of the housing, sealing the electrode assembly within the receiving cavity.

[0018] Beneficial effects: Since the battery cell includes the battery cell cover assembly, it has all the technical effects of the battery cell cover assembly, which will not be elaborated here.

[0019] Thirdly, the present invention also provides a battery pack, including the battery cells described in the above technical solutions.

[0020] Beneficial effects: Since the battery pack includes the cells, it has all the technical benefits of the cells, which will not be elaborated here. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in 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 the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the battery cell with exposed aluminum at the cover plate in the relevant technology;

[0023] Figure 2 This is a structural diagram of a battery cell cover assembly according to an embodiment of the present invention;

[0024] Figure 3 for Figure 2 The diagram shown is an exploded view of the battery cell cover assembly.

[0025] Figure 4 for Figure 2 A top view of the battery cell cover assembly shown;

[0026] Figure 5 For along Figure 4 Sectional view at point AA;

[0027] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0028] Figure 7 for Figure 6 A magnified view of a section at point C.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Cover plate body; 101. Groove; 2. First insulating component; 201. First insulating component body; 202. Raised edge; 3. Riveting block; 4. Top cover patch; 401. Top cover patch body; 402. Assembly hole; 403. Annular cover; 4031. Cover top; 4032. Inner ring sidewall; 4033. Outer ring sidewall; 5. Terminal post; 6. Second insulating component; 10. Cell cover plate assembly; 1001. First annular groove; 1002. Second annular groove. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the related technologies, due to injection molding process deviations or assembly tolerances, the edges of the aluminum sheet are prone to not being completely covered by the plastic coating, resulting in exposed aluminum material. Examples of exposed aluminum areas include... Figure 1 The location indicated by K. Metal wires generated during the assembly process of the rivet block or electrode post can easily overlap with the exposed aluminum area, causing a short circuit in the battery cell.

[0033] To address this problem, the present invention provides a cell cover assembly 10, a cell, and a battery pack.

[0034] The following is combined Figures 2 to 7 The following describes embodiments of the present invention.

[0035] According to an embodiment of the present invention, in a first aspect, a battery cell cover assembly 10 is provided, including a cover body 1, a first insulating member 2, a riveting block 3, and a top cover patch 4. The first insulating member 2 is disposed on a first surface of the cover body 1, and includes a first insulating member body 201 and a protruding edge 202 disposed around the first insulating member body 201, the protruding edge 202 and the first insulating member body 201 forming a receiving groove; the riveting block 3 is disposed within the receiving groove, and a first annular groove 1001 is formed between the protruding edge 202 and the circumferential sidewall of the riveting block 3; the top cover patch 4 includes a top cover patch body 401, the top cover patch body 401 having an assembly hole 402 that avoids the riveting block 3, and the top cover patch 4 further includes an annular cover 403 disposed around the assembly hole 402 and protruding from the top cover patch body 401; the annular cover 403... The device includes a cover top 4031 extending radially along the assembly hole 402, and an inner ring sidewall 4032 and an outer ring sidewall 4033 extending axially along the assembly hole 402. One end of the inner ring sidewall 4032 is connected to the inner ring of the cover top 4031, and the other end is a free end. One end of the outer ring sidewall 4033 is connected to the outer ring of the cover top 4031, and the other end is connected to the top cover patch body 401. The annular cover 403 covers the protruding edge 202. The inner ring sidewall 4032 extends into the first annular groove 1001. Along the direction close to the cover plate body 1, the annular cover 403 forms the second annular groove 1002, and the protruding edge 202 extends into the second annular groove 1002.

[0036] Specifically, the cover plate body 1 is made of a metal substrate. In some embodiments, the cover plate body 1 is a plain aluminum sheet.

[0037] The battery cell cover assembly 10 provided by this invention has a gap between the protruding edge 202 of the first insulating member 2 and the side wall of the riveting block 3, forming a first annular groove 1001. The annular cover 403 of the top cover patch 4 has a second annular groove 1002, covering the protruding edge 202. The inner annular side wall 4032 extends into the first annular groove 1001, and the protruding edge 202 extends into the second annular groove 1002. In this way, the protruding edge 202 and the annular cover 403 form a nested insulating and sealing structure. This structure ensures that the aluminum leakage area between the cover and the first insulating member 2 is shielded by the annular cover 403, preventing the metal substrate of the cover from being directly exposed, thereby completely blocking the short circuit path caused by aluminum leakage, preventing the metal wires generated by the riveting block 3 or the pole 5 during assembly from contacting the cover body 1, and ensuring the insulation effect of the battery cell cover assembly 10.

[0038] In addition, the first annular groove 1001 and the second annular groove 1002 are connected between the riveting block 3, the first insulating component 2 and the top cover patch 4, forming a meandering path, which can significantly extend the insulation distance between the riveting block 3 and the cover plate body 1, or between the pole post 5 and the cover plate body 1, and improve the insulation effect of the cell cover plate assembly 10.

[0039] Furthermore, a gap is provided between the riveting block 3 and the first insulating component 2 to form a first annular groove 1001, which can reduce the metal wires generated due to friction or collision during the assembly of the cover plate, and further reduce the short circuit risk of the battery cell cover plate.

[0040] Specifically, the cover plate body 1 has a first surface and a second surface disposed opposite to each other along its thickness direction. Figures 5 to 7 In the orientation shown, the first surface of the cover body 1 is its upper surface, and the second surface of the cover body 1 is its lower surface. When the cell cover assembly 10 is assembled onto the cell housing, the first surface of the cover body 1 is the side surface away from the electrode group, and the second surface of the cover body 1 is the side surface closer to the electrode group.

[0041] In some embodiments, along the thickness direction of the cover plate body 1, the height of the protrusion 202 above the first insulating body 201 is A, in mm, satisfying: 0.7mm≤A≤4mm. Along the thickness direction of the cover plate body 1, the height of the overlap between the inner ring sidewall 4032 of the annular cover 403 and the protrusion 202 is h1, in mm, satisfying: 0.1≤h1 / A≤0.9.

[0042] In this embodiment, the height A of the protruding edge 202 above the first insulating component body 201 along the thickness direction of the cover plate body 1 is controlled within a range greater than or equal to 0.7 mm. This ensures that the protruding edge 202 has sufficient structural height so that an effective first annular groove 1001 is formed between the protruding edge 202 and the sidewall of the riveting block 3, allowing the protruding edge 202 and the annular cover 403 of the top cover patch 4 to be interlocked and assembled, forming an effective insulation effect. Simultaneously, the height A of the protruding edge 202 above the first insulating component body 201 along the thickness direction of the cover plate body 1 is controlled within a range less than or equal to 4 mm. The height of the protruding edge 202 cannot be too large, otherwise it will lead to difficulties in forming the first insulating component 2, making the first insulating component 2 prone to shrinkage marks or deformation, and increasing the overall thickness of the cover plate, occupying internal battery space, and affecting energy density.

[0043] In this embodiment, the overlap ratio h1 / A between the inner ring sidewall 4032 and the raised edge 202 of the annular cover 403 along the thickness direction of the cover body 1 is controlled within a range greater than or equal to 0.1. This ensures that the inner ring sidewall 4032 effectively covers the raised edge 202, maintaining the insulation performance between the riveting block 3, the first insulating component 2, and the top cover patch 4 even with assembly tolerances or vibration displacement. Simultaneously, the overlap ratio h1 / A between the inner ring sidewall 4032 and the raised edge 202 along the thickness direction of the cover body 1 is controlled within a range less than or equal to 0.9. This avoids excessive insertion of the inner ring sidewall 4032, which could lead to stress concentration at the root of the raised edge 202, reducing the risk of cracking of the first insulating component 2. It also preserves elastic space at the top of the raised edge 202, allowing the annular cover 403 to deform moderately during thermal expansion and contraction, preventing damage from hard compression.

[0044] This embodiment, through the coordinated design of the height A of the protruding edge 202 and the overlap ratio h1 / A, not only ensures that the annular cover 403 fully covers the aluminum leakage area, achieving aluminum leakage protection, but also avoids plastic wear or metal contact caused by excessive insertion, significantly improving the safety and durability of the battery cell cover.

[0045] In some embodiments, along the thickness direction of the cover plate body 1, the surface of the top 4031 of the annular cover 403 is lower than the top surface of the riveting block 3, with a height difference of h2 in mm, satisfying: 0.1mm≤h2≤1mm.

[0046] In this embodiment, the top surface of the annular cover 403 is lower than the top surface of the rivet block 3, and the height difference h2 is controlled within the range of 0.1mm to 1mm. While ensuring aluminum leakage protection, it avoids affecting the utilization rate of the battery's internal space by adding extra height to the rivet block 3 or the cover body 1.

[0047] In some embodiments, an assembly gap W1, in mm, is provided between the inner ring sidewall 4032 of the annular cover 403 and the rivet block 3, satisfying: 0.3mm≤W1≤1mm.

[0048] In this embodiment, an assembly gap W1 is provided between the inner ring sidewall 4032 of the annular cover 403 and the riveting block 3, and is controlled within the range of 0.3mm to 1mm. This assembly gap W1 can absorb the machining tolerances and assembly errors of the inner ring sidewall 4032 of the annular cover 403 and the riveting block 3, avoiding interference or forced assembly due to accumulated errors, and reducing production difficulty and cost. If the assembly gap W1 is too small, less than 0.3mm, it will cause difficulties in assembling the top cover patch 4; if the assembly gap W1 is too large, greater than 1mm, it will affect the size design of the first insulating component 2, and its use is not recommended.

[0049] In some embodiments, an assembly gap W2, in mm, is provided between the inner ring sidewall 4032 of the annular cover 403 and the protrusion 202, satisfying: 0.3mm≤W2≤3mm.

[0050] In this embodiment, an assembly gap W2 is provided between the inner ring sidewall 4032 of the annular cover 403 and the protruding edge 202, and is controlled within the range of 0.3mm to 3mm. This assembly gap W2 can absorb the machining tolerances and assembly errors of the inner ring sidewall 4032 of the annular cover 403 and the protruding edge 202 of the first insulating member 2, avoiding interference or forced assembly due to accumulated errors, and reducing production difficulty and cost. If the assembly gap W2 is too small, less than 0.3mm, it will cause difficulties in assembling the top cover patch 4; if the assembly gap W2 is too large, greater than 3mm, it will affect the size design of the first insulating member 2, and its use is not recommended.

[0051] In some embodiments, an assembly gap W3, in mm, is provided between the outer ring sidewall 4033 of the annular cover 403 and the protrusion 202, satisfying: 0.3mm≤W3≤3mm.

[0052] In this embodiment, an assembly gap W3 is provided between the outer ring sidewall 4033 of the annular cover 403 and the protruding edge 202, and is controlled within the range of 0.3mm to 3mm. This assembly gap W3 can absorb the machining tolerances and assembly errors of the outer ring sidewall 4033 of the annular cover 403 and the protruding edge 202 of the first insulating member 2, avoiding interference or forced assembly due to accumulated errors, and reducing production difficulty and cost. If the assembly gap W3 is too small, less than 0.3mm, it will cause difficulties in assembling the top cover patch 4; if the assembly gap W3 is too large, greater than 3mm, it will affect the size design of the first insulating member 2, and its use is not recommended.

[0053] In some embodiments, the cover plate body 1 is provided with a groove 101, the first insulating member 2 is disposed in the groove 101, and the protruding edge 202 extends out of the groove 101 along the thickness direction of the cover plate body 1.

[0054] In this embodiment, a groove 101 is provided on the cover plate body 1 to accommodate the first insulating member 2. The groove 101 can provide precise installation positioning for the first insulating member 2, preventing the first insulating member 2 from shifting during assembly or use, and ensuring its relative position with the cover plate body 1 is stable. The protruding edge 202 of the first insulating member 2 extends out of the groove 101, that is, the protruding edge 202 of the first insulating member 2 is higher than the first surface of the cover plate body 1, which can increase the creepage distance between the riveting block 3 or the pole 5 and the cover plate body 1, and improve the insulation performance of the cell cover plate assembly 10.

[0055] In some embodiments, the cell cover assembly 10 further includes a terminal post 5. The cover body 1 has a first terminal post mounting hole, the first insulating member 2 has a second terminal post mounting hole, and the riveting block 3 has a third terminal post mounting hole. The positions of the first terminal post mounting hole, the second terminal post mounting hole, and the third terminal post mounting hole are correspondingly arranged. The terminal post 5 includes a terminal post 5 base plate and a terminal post 5 body. The terminal post 5 base plate is disposed on the second surface of the cover body 1. The terminal post 5 body passes through the first terminal post mounting hole, the second terminal post mounting hole, and the third terminal post mounting hole in sequence and is riveted to the riveting block 3.

[0056] In some embodiments, two riveting blocks 3 and two first insulating members 2 are provided, and they are spaced apart along the length of the cover plate body 1. Two mounting holes 402 and two annular covers 403 are provided for the top cover patch 4.

[0057] The cell cover assembly 10 provided by the present invention is suitable for cell covers of bipolar posts 5. In this embodiment, two posts 5 are provided, and two corresponding riveting blocks 3 and two first insulating parts 2 are provided respectively. Two mounting holes 402 are provided on the top cover patch 4, and an annular cover 403 is provided around each mounting hole 402.

[0058] Furthermore, in some embodiments, the two pole posts 5 are symmetrically distributed along the length of the cover plate body 1.

[0059] In some embodiments, a second insulating element 6 is also included.

[0060] The second insulating member 6 is disposed on the second surface of the cover plate body 1 and is located between the base plate of the pole post 5 and the cover plate body 1, for insulating connection between the base plate of the pole post 5 and the cover plate body 1.

[0061] In some embodiments, both the first insulating member 2 and the second insulating member 6 are plastic parts.

[0062] According to an embodiment of the present invention, in a second aspect, a battery cell is also provided, including a housing, an electrode assembly, and a battery cell cover assembly 10 as described in any of the above embodiments. The housing has a receiving cavity and an open end communicating with the receiving cavity; the electrode assembly is disposed within the receiving cavity of the housing; the battery cell cover assembly 10 is disposed at the open end of the housing, sealing the electrode assembly within the receiving cavity.

[0063] Since the battery cell includes the battery cell cover assembly 10, it has all the technical effects of the battery cell cover assembly 10, which will not be described in detail here.

[0064] According to an embodiment of the present invention, a third aspect also provides a battery pack including the battery cells described in the above embodiments.

[0065] Since the battery pack includes the battery cells and has all the technical benefits of the battery cells, it will not be elaborated here.

[0066] Although embodiments of the invention 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 the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A cell cover assembly, characterized in that, include: Cover plate body; A first insulating element is disposed on a first surface of the cover plate body. The first insulating element includes a first insulating element body and a protruding edge disposed around the periphery of the first insulating element body. The protruding edge and the first insulating element body form a receiving groove. A rivet block is disposed in the receiving groove, and a first annular groove is formed between the protruding edge and the circumferential sidewall of the rivet block. A top cover patch includes a top cover patch body having an assembly hole that avoids the rivet block. The top cover patch also includes an annular cover disposed around the assembly hole and protruding from the top cover patch body. The annular cover includes a cover top extending radially along the assembly hole and an inner ring sidewall and an outer ring sidewall extending axially along the assembly hole. One end of the inner ring sidewall is connected to the inner ring of the cover top, and the other end is a free end. One end of the outer ring sidewall is connected to the outer ring of the cover top, and the other end is connected to the top cover patch body. The annular cover covers the protruding edge. The inner ring sidewall extends into the first annular groove. Along the direction close to the cover plate body, the annular cover forms a second annular groove, and the protruding edge extends into the second annular groove. Along the thickness direction of the cover plate body, the height of the protrusion above the first insulating element body is A, in mm, satisfying: 0.7mm≤A≤4mm Along the thickness direction of the cover plate body, the height by which the inner ring sidewall of the annular cover overlaps with the convex edge is h1, in mm, and satisfies: 0.1≤h1 / A≤0.

9.

2. The cell cover assembly according to claim 1, characterized in that, Along the thickness direction of the cover plate body, the surface of the top of the annular cover is lower than the top surface of the riveting block, with a height difference of h2 (in mm), satisfying the following: 0.1mm≤h2≤1mm.

3. The cell cover assembly according to claim 1, characterized in that, An assembly gap W1, in mm, is provided between the inner ring sidewall of the annular cover and the riveting block, satisfying the following: 0.3mm≤W1≤1mm.

4. The cell cover assembly according to claim 1, characterized in that, A fitting clearance W2, in mm, is provided between the inner ring sidewall of the annular cover and the protruding edge, satisfying the following: 0.3mm≤W2≤3mm.

5. The cell cover assembly according to claim 1, characterized in that, A fitting clearance W3, in mm, is provided between the outer ring sidewall of the annular cover and the protruding edge, satisfying the following: 0.3mm≤W3≤3mm.

6. The cell cover assembly according to claim 1, characterized in that, The cover plate body is provided with a groove, the first insulating member is disposed in the groove, and the protruding edge extends out of the groove along the thickness direction of the cover plate body.

7. The cell cover assembly according to claim 1, characterized in that, Two of each of the riveting blocks and the first insulating component are provided, and they are spaced apart along the length of the cover plate body. Two of each of the top cover patch assembly holes and the annular cover are provided.

8. A battery cell, characterized in that, include: A housing having a receiving cavity and an open end communicating with the receiving cavity; The electrode assembly is disposed within the receiving cavity of the housing; The cell cover assembly according to any one of claims 1 to 7, wherein the cell cover assembly is disposed at the open end of the housing and seals the electrode assembly within the receiving cavity.

9. A battery pack, characterized in that, Includes the battery cell as described in claim 8.

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