Assembling method of pole-free top cover assembly

Abstract

The invention relates to the technical field of top cover assemblies, and discloses a pole-free top cover assembly assembling method which comprises the following assembling steps: 1) a connecting piece is fixedly connected with a lower plastic part, and the connecting piece penetrates through the lower plastic part and a top cover piece; the connecting piece is provided with an inner connecting section, a penetrating section and an outer connecting section which are electrically connected with the battery cell, the penetrating section penetrates through the lower plastic part and the top cover piece, and the inner connecting section is fixedly connected with the lower plastic part; the lower plastic part is fixedly connected to the bottom of the top cover piece, and the outer connecting section extends out of the top cover piece. (2) the penetrating-out section, the lower plastic part and the top cover piece are sealed; (3) an upper plastic part is arranged on the top of the top cover piece, and the upper plastic part is fixedly connected with the top cover piece; (4) the outer connecting section abuts against the upper plastic part, and the lower plastic part, the top cover piece, the connecting piece and the upper plastic part are assembled to form a top cover assembly; according to the top cover assembly, a pole column and a pole block are omitted, the external connection section can be directly used for being electrically connected with the busbar, so that the charging and discharging requirements are met, the structure is greatly simplified, and the cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of top cover assemblies, and more specifically, to an assembly method for a poleless top cover assembly. Background Art

[0002] Batteries are widely used in new energy electric vehicles, energy storage, mobile devices and other related products. With the rise of new energy, battery technology and demand are growing rapidly.

[0003] The top cover assembly of the battery includes an upper plastic part, a top cover sheet, a lower plastic part, a pole and a pole block, wherein the upper plastic part is arranged on the top of the top cover sheet, the lower plastic part is arranged on the bottom of the top cover sheet, the pole block is arranged on the upper plastic part, and the pole is passed through the lower plastic part, the top cover sheet and the upper plastic part, and connected to the pole block. The pole is connected to the pole ear of the battery cell, and the pole block is connected to the external busbar to realize the charging and discharging of the battery.

[0004] In the prior art, poles and pole blocks need to be arranged in the top cover assembly, the overall structure is relatively complex, and the assembly of the top cover assembly is cumbersome and the assembly efficiency is low. Summary of the invention

[0005] The purpose of the present invention is to provide a method for assembling a poleless top cover assembly, aiming to solve the problem of low assembly efficiency of the top cover assembly in the prior art.

[0006] The present invention is implemented in this way: the method for assembling the poleless top cover assembly comprises the following assembling steps:

[0007] 1) The connecting piece is fixedly connected to the lower plastic part, and the connecting piece passes through the lower plastic part and the top cover piece; the connecting piece has an inner connecting section electrically connected to the battery core, a passing section and an outer connecting section, the passing section passes through the lower plastic part and the top cover piece, the inner connecting section is fixedly connected to the lower plastic part; the lower plastic part is fixedly connected to the bottom of the top cover piece, and the outer connecting section extends to the outside of the top cover piece;

[0008] 2) The penetration section is sealed with the lower plastic part and the top cover sheet by injecting colloid;

[0009] 3) Arranging an upper plastic part on the top of the top cover sheet, the upper plastic part is fixedly connected to the top cover sheet, and the pass-out section passes through the upper plastic part;

[0010] 4) The outer connecting section is abutted against the upper plastic part, and the lower plastic part, the top cover piece, the connecting piece and the upper plastic part are assembled to form a top cover assembly.

[0011] Furthermore, in the assembly step 1), the lower plastic part and the top cover sheet are snap-fitted and fixedly connected.

[0012] Furthermore, in the assembly step 1), the inner connecting section and the lower plastic part are snap-fitted and fixed.

[0013] Furthermore, in the assembly step 1), the inner connecting section is extended to form a bending section, and the bending section and the inner connecting section are bent and arranged, and are fixedly built into the lower plastic part.

[0014] Furthermore, in the assembly step 1), the lower plastic part has a lower hole, and the top cover sheet has an upper hole. When the lower plastic part is fixedly connected to the top cover sheet, the lower hole is connected to the upper hole to form a through hole; the pass-out section passes through the through hole;

[0015] In the assembly step 2), a colloid is injected into the through hole, the colloid completely fills the through hole, the through section is fixedly arranged, and the through section is sealed with the lower plastic part and the top cover sheet.

[0016] Furthermore, in the assembly step 1), the penetration section is provided with a protruding portion protruding outward and a recessed portion recessed inward, and in the assembly step 2), the colloid wraps the protruding portion and the recessed portion.

[0017] Furthermore, in the assembly step 1), the diameter of the lower hole is arranged differently from the diameter of the upper hole, and the lower plastic part protrudes toward the lower hole to form a protruding block; in the assembly step 2), the colloid wraps the protruding block.

[0018] Furthermore, in the assembly step 1), a lower groove is provided on the top of the lower plastic part, and an upper groove is provided on the bottom of the top cover sheet, and the lower groove is laterally offset and connected to the upper groove to form an offset groove, and the offset groove is connected to the through hole; in the assembly step 2), in the process of injecting colloid into the through hole, the colloid overflows into the offset groove and fills the offset groove.

[0019] Furthermore, in the assembly step 1), the connecting piece is a tab electrically connected to the battery cell.

[0020] Furthermore, in the assembly step 1), the battery cell has a tab, and the inner connecting section is fixedly connected to the tab so that the inner connecting section is electrically connected to the battery cell.

[0021] Compared with the prior art, the present invention provides a method for assembling a poleless top cover assembly. The inner connecting section of the connecting sheet is electrically connected to the battery cell, the inner connecting section is fixedly connected to the lower plastic part, the passing section passes through the lower plastic part and the top cover sheet, and is sealed with a colloid. The lower plastic part is fixedly connected to the top cover sheet. After the upper plastic part is connected to the top cover sheet, the outer connecting section abuts against the upper plastic part. The entire assembly process is fast and convenient, the assembly difficulty is simplified, and the assembly efficiency is improved.

[0022] Secondly, the assembled top cover component eliminates the pole and pole block, and can directly use the external connection section to electrically connect with the busbar to meet the charging and discharging requirements, greatly simplifying the structure and saving costs;

[0023] In addition, the upper plastic part, the top cover piece, the lower plastic part and the connecting piece form a fixed integrated structure. The top cover assembly has a strong integrity and a stable structure, which can avoid the phenomenon of battery cell shaking caused by pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic flow chart of the method for assembling the poleless top cover assembly provided by the present invention;

[0025] Figure 2 is a partial schematic diagram of the top cover assembly provided by the present invention;

[0026] Figure 3 It is a partial three-dimensional schematic diagram of the top cover sheet and the lower plastic part provided by the present invention;

[0027] Figure 4 It is a partial schematic diagram of the cooperation between the penetration section, the lower plastic part and the top cover sheet provided by the present invention;

[0028] Figure 5 is a three-dimensional schematic diagram of a connecting piece provided by the present invention;

[0029] Figure 6 It is a partial three-dimensional schematic diagram of the connecting piece provided by the present invention;

[0030] In the figure: battery cell 100; lower plastic part 200, lower groove 202, protruding block 203; top cover sheet 300, middle clamping block 301, upper groove 302, upper clamping groove 303; top cover sheet 400, upper clamping block 401; connecting sheet 500, inner connecting section 501, lower clamping block 5011, bending section 502, penetrating section 503, protruding portion 5031, recessed portion 5032, outer connecting section 504, empty groove area 5041; colloid 600; through hole 700; fixing piece 800. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0033] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] Reference Figure 1-6 The figure shows a preferred embodiment of the present invention.

[0035] The assembly method of the poleless top cover assembly includes the following assembly steps:

[0036] 1) The connecting piece 500 is fixedly connected to the lower plastic part 200, and the connecting piece 500 passes through the lower plastic part 200 and the top cover piece 300; the connecting piece 500 has an inner connecting section 501 electrically connected to the battery cell 100, a passing section 503 and an outer connecting section 504, the passing section 503 passes through the lower plastic part 200 and the top cover piece 300, the inner connecting section 501 is fixedly connected to the lower plastic part 200; the lower plastic part 200 is fixedly connected to the bottom of the top cover piece 300, and the outer connecting section 504 extends to the outside of the top cover piece 300;

[0037] 2) By injecting the colloid 600, the penetration section 503 is sealed with the lower plastic part 200 and the top cover sheet 300, so that the penetration section 503 can be fixed and arranged, and the sealing state can be maintained;

[0038] 3) Arrange the upper plastic part 400 on the top of the top cover sheet 300, the upper plastic part 400 is fixedly connected to the top cover sheet 300, and the passing section 503 passes through the upper plastic part 400;

[0039] 4) The outer connecting section 504 is abutted against the upper plastic part 400, and the lower plastic part 200, the top cover piece 300, the connecting piece 500 and the upper plastic part 400 are assembled to form a top cover assembly.

[0040] In the above-mentioned method for assembling a poleless top cover assembly, the inner connecting section 501 of the connecting sheet 500 is electrically connected to the battery cell 100, the inner connecting section 501 is fixedly connected to the lower plastic part 200, the passing section 503 passes through the lower plastic part 200 and the top cover sheet 300, and is sealed by the colloid 600, the lower plastic part 200 is fixedly connected to the top cover sheet 300, and after the upper plastic part 400 is connected to the top cover sheet 300, the outer connecting section 504 abuts against the upper plastic part 400, the whole assembly process is fast and convenient, the assembly difficulty is simplified, and the assembly efficiency is improved;

[0041] Secondly, the assembled top cover assembly eliminates the pole and pole block, and can directly use the external connection section 504 to electrically connect with the busbar to meet the charging and discharging requirements, greatly simplifying the structure and saving costs;

[0042] In addition, the upper plastic part 400, the top cover sheet 300, the lower plastic part 200 and the connecting sheet 500 form a fixed integrated structure, the top cover assembly has a strong integrity and a stable structure, and the phenomenon of shaking of the battery cell 100 caused by pulling can be avoided.

[0043] In this embodiment, in the assembly step 1), the lower plastic part 200 and the top cover piece 300 are fixedly connected by snapping together. The fixed connection is achieved by the snapping structure, and welding is not required, which greatly simplifies the assembly difficulty and improves the assembly efficiency.

[0044] Specifically, a middle card slot is provided at the top of the lower plastic part 200, and a middle card block 301 is provided at the bottom of the top cover piece 300. The middle card block 301 is embedded in the middle card slot to achieve a snap connection, thereby achieving a snap connection between the lower plastic part 200 and the top cover piece 300.

[0045] In this embodiment, in the assembly step 1), the inner connecting section 501 and the lower plastic part 200 are fixedly connected by snap-fitting structure, and the fixed connection is performed without welding, which greatly simplifies the assembly difficulty and improves the assembly efficiency.

[0046] Specifically, a lower clamping block 5011 is protruding from the inner connecting section 501 , and a lower clamping groove is provided at the bottom of the lower plastic part 200 . The lower clamping block 5011 is embedded in the lower clamping groove to achieve a clamping connection, thereby achieving a clamping connection between the inner connecting section 501 and the top cover piece 300 .

[0047] In assembly step 1), the lower plastic part 200 and the top cover sheet 300 may be firstly engaged and fixedly connected, the inner connecting section 501 may then be engaged and fixedly connected with the lower plastic part 200, and the passing section 503 may then pass through the lower plastic part 200 and the top cover sheet 300.

[0048] Alternatively, the inner connecting section 501 may be first engaged and fixedly connected with the lower plastic part 200 , and then the lower plastic part 200 and the top cover sheet 300 may be engaged and fixedly connected, and then the passing section 503 may pass through the lower plastic part 200 and the top cover sheet 300 .

[0049] In this embodiment, the upper plastic part 400 is fixedly connected with the top cover sheet 300 by snapping, the top of the top cover sheet 300 is provided with an upper snap groove 303, and the upper plastic part 400 is provided with an upper snap block 401, and the upper snap block 401 is embedded in the upper snap groove 303 to make the upper plastic part 400 and the top cover sheet 300 fixedly connected. In addition, the passing section 503 also passes through the upper plastic part 400 synchronously and is fixedly connected with the upper plastic part 400.

[0050] In this embodiment, in the assembly step 1), the inner connecting section 501 is extended to form a bent section 502, which is bent and arranged with the inner connecting section 501 and fixedly built into the lower plastic part 200. After the inner connecting section 501 is engaged and fixedly connected with the lower plastic part 200, the bent section 502 is built and fixed into the lower plastic part 200.

[0051] By arranging the bending section 502, the structural strength of the entire connecting piece 500 is enhanced, so that the connecting piece 500 and the lower plastic part 200 are fixedly connected to form a stable whole. As a preferred embodiment, the bending section 502 and the inner connecting section 501 are arranged in an upper and lower interval, which is convenient for the formation and arrangement of the bending section 502 and further enhances the structural stability of the connecting piece 500.

[0052] In this embodiment, in the assembly step 1), the lower plastic part 200 has a lower hole, and the top cover sheet 300 has an upper hole. When the lower plastic part 200 is fixedly connected to the top cover sheet 300, the lower hole is connected to the upper hole to form a through hole 700; the through-hole 700 is passed through the through hole 700 by the protruding section 503; in the assembly step 2), the colloid 600 is injected into the through hole 700, and the colloid 600 fills the through hole 700, the protruding section 503 is fixedly arranged, and the protruding section 503 and the lower plastic part 200 and the top cover sheet 300 are sealed.

[0053] When the lower plastic part 200 is fixedly connected with the top cover sheet 300, the upper hole is aligned with the lower hole and connected to form a through hole 700. In this way, the through section 503 can pass through the lower plastic part 200 and the top cover sheet 300, and the colloid 600 is used to fill the through hole 700. The through section 503 can be fixedly arranged and combined with the lower plastic part 200 and the top cover sheet 300 into an integrated structure, and the through section 503 can be sealed from the lower plastic part 200 and the top cover sheet 300.

[0054] In this embodiment, in the assembly step 1), the protruding portion 5031 protruding outward and the recessed portion 5032 recessed inward are provided on the protruding portion 5033 , and in the assembly step 2), the colloid 600 wraps the protruding portion 5031 and the recessed portion 5032 .

[0055] By providing the protruding portion 5031 and the recessed portion 5032, the outer surface of the piercing section 503 forms a concave-convex structure, which can improve the tight connection between the piercing section 503 and the colloid 600, so that the position of the piercing section 503 is better and more firmly fixed, and the sealing is greatly enhanced. Alternatively, the piercing section 503 can also be arranged in a curved shape to increase the contact area with the remaining colloid 600 and the curved connection path, improve the tightness of the connection, and enhance the sealing.

[0056] In this embodiment, in the assembly step 1), the diameter of the lower hole is arranged differently from the diameter of the upper hole, so that the through hole 700 is arranged in a variable diameter shape, so that the colloid 600 can be placed more firmly in the through hole 700, thereby improving the sealing performance.

[0057] The lower plastic part 200 protrudes toward the lower hole, forming a protruding block 203; in the assembly step 2), the colloid 600 wraps the protruding block 203. By forming the protruding block 203, the colloid 600 can be more strongly combined with the lower plastic part 200 and the top cover sheet 300, ensuring that the penetration section 503 is firmly placed in the through hole 700 and enhancing the sealing performance.

[0058] In this embodiment, in the assembly step 1), a lower groove 202 is provided on the top of the lower plastic part 200, and an upper groove 302 is provided on the bottom of the top cover sheet 300. The lower groove 202 and the upper groove 302 are laterally staggered and connected to form a staggered groove, and the staggered groove is connected to the through hole; in the assembly step 2), in the process of injecting the colloid 600 into the through hole, the colloid 600 overflows into the staggered groove and fills the staggered groove.

[0059] The colloid 600 overflows into the offset groove and fills up the offset groove, thereby further enhancing the stability of the connection between the lower plastic part 200 and the top cover sheet 300 and further enhancing the sealing performance.

[0060] In this embodiment, in the assembly step 1), the connecting piece 500 is a tab electrically connected to the battery cell 100. In this way, the tab is directly used to electrically connect to the battery cell 100 and to the busbar battery cell 100, further simplifying the structure.

[0061] Alternatively, in the assembly step 1), the battery cell 100 has a tab, and the inner connecting section 501 is fixedly connected to the tab, so that the inner connecting section 501 is electrically connected to the battery cell 100. The connecting sheet 500 is an independent component, which is formed in the lower plastic part 200, the top cover sheet 300 and the upper plastic part 400, and is connected to the tab battery cell 100 on the battery cell 100, and can be electrically connected to the busbar, so as to achieve the effect of electrically connecting the battery cell 100 to the busbar.

[0062] In this embodiment, a fuse is provided on the external connection part. When the current passing through the fuse is greater than a set value, the fuse blows. An insulating fixing part 800 is provided on the fuse part. When the fuse blows, the fixing part 800 fixes the fuse part to prevent the external connection part from making secondary contact with external electrical components, thereby preventing secondary damage to the battery.

[0063] Specifically, the fuse part is provided with an empty slot area 5041 which runs through from top to bottom, and the empty slot area 5041 reduces the size of the fuse part to meet the effect that the fuse part can be fused. The fixing member 800 is a colloid 600 supported by a colloid 600, and the colloid 600 is arranged on the fuse part, fills the empty slot area 5041, and is connected to the external connection part, so that when the fuse part is fused, the colloid 600 can fix the fuse part.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for assembling a poleless top cover assembly, characterized in that: The assembly steps include: 1) The connecting piece is fixedly connected to the lower plastic part, and the connecting piece passes through the lower plastic part and the top cover piece; the connecting piece has an inner connecting section electrically connected to the battery core, a passing section and an outer connecting section, the passing section passes through the lower plastic part and the top cover piece, the inner connecting section is fixedly connected to the lower plastic part; the lower plastic part is fixedly connected to the bottom of the top cover piece, and the outer connecting section extends to the outside of the top cover piece; 2) The penetration section is sealed with the lower plastic part and the top cover sheet by injecting colloid; 3) Arranging an upper plastic part on the top of the top cover sheet, the upper plastic part is fixedly connected to the top cover sheet, and the pass-out section passes through the upper plastic part; 4) The outer connecting section is abutted against the upper plastic part, and the lower plastic part, the top cover piece, the connecting piece and the upper plastic part are assembled to form a top cover assembly.

2. The method for assembling a poleless top cover assembly according to claim 1, characterized in that: In the assembly step 1), the lower plastic part and the top cover sheet are snap-fitted and fixedly connected.

3. The method for assembling a poleless top cover assembly according to claim 1, characterized in that: In the assembly step 1), the inner connecting section is snap-fitted and fixed to the lower plastic part.

4. The method for assembling a poleless column top cover assembly according to any one of claims 1 to 3, characterized in that: In the assembly step 1), the inner connecting section is extended to form a bending section, and the bending section and the inner connecting section are bent and arranged, and are fixedly embedded in the lower plastic part.

5. The method for assembling a poleless column top cover assembly according to any one of claims 1 to 3, characterized in that: In the assembly step 1), the lower plastic part has a lower hole, and the top cover sheet has an upper hole. When the lower plastic part is fixedly connected to the top cover sheet, the lower hole is connected to the upper hole to form a through hole; the pass-out section passes through the through hole; In the assembly step 2), a colloid is injected into the through hole, the colloid completely fills the through hole, the through section is fixedly arranged, and the through section is sealed with the lower plastic part and the top cover sheet.

6. The method for assembling the poleless column top cover assembly according to claim 5, characterized in that: In the assembly step 1), the penetration section is provided with a protruding portion protruding outward and a recessed portion recessed inward, and in the assembly step 2), the colloid wraps the protruding portion and the recessed portion.

7. The method for assembling the poleless column top cover assembly according to claim 5, characterized in that: In the assembly step 1), the diameter of the lower hole is arranged differently from the diameter of the upper hole, and the lower plastic part protrudes toward the lower hole to form a protruding block; in the assembly step 2), the colloid wraps the protruding block.

8. The method for assembling the poleless top cover assembly according to claim 5, characterized in that: In the assembly step 1), a lower groove is provided on the top of the lower plastic part, and an upper groove is provided on the bottom of the top cover sheet. The lower groove and the upper groove are laterally offset and connected to form an offset groove, and the offset groove is connected to the through hole. In the assembly step 2), during the process of injecting colloid into the through hole, the colloid overflows into the offset groove and fills the offset groove.

9. The method for assembling a poleless column top cover assembly according to any one of claims 1 to 3, characterized in that: In the assembly step 1), the connecting piece is a tab electrically connected to the battery cell.

10. The method for assembling a poleless column top cover assembly according to any one of claims 1 to 3, characterized in that: In the assembly step 1), the battery cell has a tab, and the inner connecting section is fixedly connected to the tab so that the inner connecting section is electrically connected to the battery cell.

Images