Battery structure assembly and battery

Abstract

The utility model relates to the technical field of energy storage equipment, in particular to a battery structure assembly, which comprises a top cover plate, pins, a pole and an anti-explosion valve. An assembling hole is formed in the top cover piece, a stepped hole is formed in the pin, a through hole is formed in the middle of the pole in a penetrating mode, one end of the pole is riveted to the stepped hole through the assembling hole and the stepped hole, and the other end of the pole protrudes out of the assembling hole in the radial direction of the assembling hole. The anti-explosion valve is connected to the inner wall of the through hole and blocks the through hole. The utility model also provides a battery which comprises a box body and the battery structure assembly, and the top cover sheet is arranged at the opening of the box body so as to form a shell of the battery together with the box body. According to the battery structure assembly and the battery, the battery cost can be reduced on the premise of ensuring the battery quality.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, in particular to a battery structure component and a battery. Background Art

[0002] To ensure battery safety, the battery cover is typically equipped with an explosion-proof valve. Furthermore, the battery terminals are solid structures, with the outward-facing ends riveted to the aluminum block. The other ends of the terminals have mounting holes protruding from them. The riveting of the terminals to the aluminum block secures the upper insulating plastic, top cover, and lower insulating plastic components. This complex structure, with its numerous components and assembly steps, makes it difficult to reduce costs while ensuring quality. Utility Model Content

[0003] One purpose of the present invention is to provide a battery structure assembly that can reduce battery costs while ensuring battery quality.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A battery structure assembly is provided, comprising:

[0006] A top cover sheet, wherein the top cover sheet is provided with an assembly hole;

[0007] A pin, wherein a step hole is formed on the pin;

[0008] A pole, wherein a through hole is formed in the middle of the pole, one end of the pole passes through the assembly hole and the step hole and is riveted to the step hole, and the other end of the pole protrudes from the assembly hole in a radial direction of the assembly hole;

[0009] An explosion-proof valve is connected to the inner wall of the through hole, and the explosion-proof valve blocks the through hole.

[0010] Optionally, a first step surface is provided in the through hole, the first step surface is away from the pin, and the explosion-proof valve is connected to the first step surface.

[0011] Optionally, the explosion-proof valve is welded to the first step surface.

[0012] Optionally, a notch is provided on the explosion-proof valve, the notch is located on the side of the explosion-proof valve facing away from the pin, or the notch is located on the side of the explosion-proof valve facing the pin, or the notch is provided on both the side of the explosion-proof valve facing away from the pin and the side facing the pin.

[0013] Optionally, an explosion-proof film is further included, which is arranged in the through hole, blocks the through hole, and is farther away from the top cover sheet than the explosion-proof valve.

[0014] Optionally, a second step surface is provided in the through hole, the second step surface is away from the pin, and the explosion-proof film is connected to the second step surface.

[0015] Optionally, the riveted end surface of the pole is flush with the surface of the pin facing away from the top cover sheet.

[0016] Optionally, the electrode includes a positive electrode and a negative electrode, the explosion-proof valve is provided in the through hole of the positive electrode to block the through hole of the positive electrode, and a blocking member is provided in the through hole of the negative electrode to block the through hole of the negative electrode;

[0017] Alternatively, the explosion-proof valve is provided in the through hole of the negative electrode column to block the through hole of the negative electrode column, and the blocking member is provided in the through hole of the positive electrode column to block the through hole of the positive electrode column;

[0018] Alternatively, two explosion-proof valves are provided, and the two explosion-proof valves are respectively provided in the through hole of the positive electrode column and the through hole of the negative electrode column.

[0019] Optionally, an upper insulating member is further included, one end of the pole has a protrusion, and the upper insulating member is located between the protrusion and the top cover sheet;

[0020] And / or, further comprising an insulating sealing ring, wherein the insulating sealing ring is sleeved on the pole and clamped between the pole and the inner wall of the assembly hole;

[0021] And / or, it further includes a lower insulating member, which is sandwiched between the top cover sheet and the pins.

[0022] Another object of the present invention is to provide a battery that can reduce battery cost while ensuring battery quality.

[0023] To achieve this purpose, the present invention adopts the following technical solutions:

[0024] A battery is provided, comprising a box body and the above-mentioned battery structure assembly, wherein a top cover is arranged at the opening of the box body to form a shell of the battery together with the box body.

[0025] Beneficial effects of the utility model:

[0026] The utility model provides a battery structure component, including a top cover plate, a pin, a pole and an explosion-proof valve. Among them, an assembly hole is provided on the top cover plate, a step hole is provided on the pin, a through hole is provided in the middle of the pole, one end of the pole is riveted to the step hole through the assembly hole and the step hole, and the other end of the pole protrudes from the assembly hole in the radial direction of the assembly hole. The explosion-proof valve is connected to the inner wall of the through hole, and the explosion-proof valve blocks the through hole. By riveting one end of the pole to the pin and the other end of the pole protruding from the assembly hole, the pole, the top cover plate and other components can be pressed together by riveting, and there is no need to set an additional riveted aluminum block at the other end of the pole, and there is no need to weld and fix the pin and the pole, thus eliminating some process steps in the prior art. In addition, by setting the explosion-proof valve at the through hole to block the through hole, the sealing problem of the hollow through hole in the pole can be solved. Therefore, the battery structure component can reduce the number of components, eliminate some process steps, reduce battery costs and improve production efficiency while ensuring battery quality.

[0027] The utility model provides a battery comprising a box body and the above-mentioned battery structure assembly, wherein a top cover is arranged at the opening of the box body to form a battery shell together with the box body. The battery can reduce battery cost while ensuring battery quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the battery structure assembly provided by the embodiment of the utility model Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the structure of the battery structure assembly provided by the embodiment of the utility model Figure 2 ;

[0030] Figure 3 yes Figure 2 Middle AA section view;

[0031] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0032] Figure 5 It is an exploded view of the battery structure assembly provided by an embodiment of the present utility model.

[0033] In the picture:

[0034] 1. Top cover; 2. Pin; 3. Pole; 31. Through hole; 32. Riveted end face; 33. First step surface; 34. Second step surface; 35. Third step surface; 36. Protrusion; 4. Explosion-proof valve; 41. Notch; 5. Explosion-proof film; 6. Upper plastic; 7. Insulation seal ring; 8. Lower plastic. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention, and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of it.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0038] like Figure 1-Figure 5 As shown, the battery structure assembly of this embodiment includes a top cover sheet 1, pins 2, a terminal 3, and an explosion-proof valve 4. The top cover sheet 1 has an assembly hole, the pins 2 have a stepped hole, and a through-hole 31 is formed in the middle of the terminal 3. One end of the terminal 3 passes through the assembly hole and the stepped hole and is riveted to the stepped hole. The other end of the terminal 3 protrudes radially out of the assembly hole. The explosion-proof valve 4 is connected to the inner wall of the through-hole 31, thereby blocking the through-hole 31.

[0039] The pole 3 is riveted to the pin 2 to ensure a firm connection between the two, reducing the risk of separation between the two to almost zero, and effectively ensuring the stability of the battery quality. Since one end of the pole 3 is riveted to the pin 2, and the other end of the pole 3 protrudes the assembly hole, the pole 3, the top cover plate 1 and other components can be pressed together by riveting. There is no need to set an additional riveted aluminum block at the other end of the pole 3, and there is no need to weld the pin 2 and the pole 3 to fix them, which eliminates some process steps in the existing technology. And by setting the explosion-proof valve 4 at the through hole 31 to block the through hole 31, the sealing problem of the through hole 31 of the pole 3 can be solved, and the space for setting the explosion-proof valve 4 on the top cover plate 1 can be eliminated. Therefore, this battery structure assembly can reduce the number of components, eliminate some process steps, reduce battery costs and improve production efficiency while ensuring the quality of the battery.

[0040] Optionally, a first stepped surface 33 is provided within the through hole 31, facing away from the pin 2, and the explosion-proof valve 4 is connected to the first stepped surface 33. Optionally, in this embodiment, the first stepped surface 33 is an annular surface. Of course, in other embodiments, the first stepped surface 33 can also be configured as multiple, spaced-apart surfaces, forming an overall annular surface, but ensuring sealing. Optionally, the explosion-proof valve 4 is welded to the first stepped surface 33 to ensure the connection strength between the explosion-proof valve 4 and the terminal 3.

[0041] Optionally, the explosion-proof valve 4 is provided with a notch 41, which weakens the structure at the notch 41, thereby causing it to explode under a predetermined pressure. The notch 41 can be located on the side of the explosion-proof valve 4 facing away from the pin 2, or on the side of the explosion-proof valve 4 facing the pin 2, or on both the side of the explosion-proof valve 4 facing away from the pin 2 and the side facing the pin 2. In this embodiment, the notch 41 is located on the side of the explosion-proof valve 4 facing away from the pin 2.

[0042] Optionally, the battery structure assembly further includes an explosion-proof film 5, which is disposed in the through hole 31. The explosion-proof film 5 blocks the through hole 31. The explosion-proof film 5 is further away from the top cover sheet 1 than the explosion-proof valve 4. The explosion-proof film 5 can ensure that the explosion-proof valve 4 is not in direct contact with the outside world, thereby providing a certain degree of protection for the explosion-proof valve 4.

[0043] Optionally, a second step surface 34 is provided in the through hole 31, the second step surface 34 faces away from the pin 2, and the explosion-proof film 5 is connected to the second step surface 34. Optionally, the second step surface 34 is also an annular surface.

[0044] Optionally, in order to ensure a certain distance between the explosion-proof film 5 and the explosion-proof valve 4, a third step surface 35 is further provided in the through hole 31. Along the axial direction of the through hole 31, the second step surface 34, the third step surface 35, and the first step surface 33 are arranged in sequence, and the outer diameters of the second step surface 34, the third step surface 35, and the first step surface 33 gradually decrease.

[0045] Optionally, the riveted end surface 32 of the pole 3 is flush with the surface of the pin 2 facing away from the top cover sheet 1 to prevent protrusion from damaging other components inside the battery.

[0046] Optionally, the electrode 3 includes a positive electrode and a negative electrode. In the present embodiment, two explosion-proof valves 4 are provided, and the two explosion-proof valves 4 are respectively provided in the through-hole 31 of the positive electrode and the through-hole 31 of the negative electrode. Of course, in other embodiments, only one explosion-proof valve 4 may be provided, and it is provided in the through-hole 31 of the positive electrode to block the through-hole 31 of the positive electrode, and a blocking member is provided in the through-hole 31 of the negative electrode to block the through-hole 31 of the negative electrode. Optionally, the blocking member may be a blocking sheet welded to the inner wall of the through-hole 31 of the negative electrode. Alternatively, the explosion-proof valve 4 is provided in the through-hole 31 of the negative electrode to block the through-hole 31 of the negative electrode, and a blocking member is provided in the through-hole 31 of the positive electrode to block the through-hole 31 of the positive electrode.

[0047] In order to ensure insulation between the pole 3 and the top cover 1, the battery structure assembly optionally further includes an upper insulating member, one end of the pole 3 has a protrusion 36, and the upper insulating member is located between the protrusion 36 and the top cover 1. Optionally, the upper insulating member is an upper plastic 6, made of PP or PPS plastic material. A positioning groove is provided on the upper plastic 6, the protrusion 36 is located in the positioning groove, and a hole is provided at the bottom of the positioning groove to allow the pole 3 to pass through. Optionally, a limiting groove is also provided on the top cover 1, the upper plastic 6 is located at the limiting groove, and the assembly hole is provided at the bottom of the limiting groove.

[0048] Optionally, the battery structure assembly further includes an insulating seal ring 7, which is sleeved on the pole 3 and sandwiched between the pole 3 and the inner wall of the assembly hole. Optionally, the insulating seal ring 7 is made of fluororubber.

[0049] In order to ensure insulation between the pins 2 and the top cover sheet 1, the battery structure assembly optionally further includes a lower insulating member, which is sandwiched between the top cover sheet 1 and the pins 2. Optionally, the lower insulating member is a lower plastic 8 made of PP plastic material.

[0050] Optionally, in this embodiment, the explosion-proof film 5 is made of PET material, the explosion-proof valve 4 is made of MFX2 material, the positive pole is made of aluminum, the negative pole is made of a composite structure of aluminum and copper, the positive pin 2 is made of aluminum, and the negative pin 2 is made of copper.

[0051] The assembly process of the battery structure assembly includes: first, assembling the top cover sheet 1 and the lower plastic 8 into component one, assembling the positive pole column and the upper plastic 6 at the positive pole and the insulating sealing ring 7 into component two, and assembling the negative pole column and the upper plastic 6 at the negative pole and the insulating sealing ring 7 into component three. Then, place components two and three at specific positions, and then assemble components two and three onto component one respectively. Finally, place the positive and negative pins 2 at the specific placement holes of the lower plastic 8, use tooling to squeeze the upper surfaces of the positive pole column and the negative pole column, and form reverse-riveted riveted surfaces in the step holes of the positive pin and the negative pin. At this time, place the two explosion-proof valves 4 on the third step surface 35 of the positive pole column and the negative pole column respectively for welding, and finally apply the explosion-proof film 5.

[0052] This battery structural assembly replaces the solid electrode with a hollow electrode 3. A stepped hole is punched into the lead 2. The hollow electrode 3 is then riveted to the lead 2 with the stepped hole. An explosion-proof valve 4 is welded to the first stepped surface 33 of the through-hole 31 of the electrode 3. This battery structural assembly eliminates the riveted aluminum block used in the prior art and replaces the solid electrode with a hollow electrode 3, significantly reducing product costs. Furthermore, since the lead 2 is riveted to the electrode 3, the risk of the lead 2 falling off is virtually eliminated, thereby improving battery safety.

[0053] This embodiment also provides a battery, comprising a box and the above-mentioned battery structure assembly, wherein a top cover sheet 1 is arranged at the opening of the box to form a battery shell together with the box. The battery can reduce battery cost while ensuring battery quality.

[0054] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A battery structure assembly, characterized in that: include: A top cover sheet (1), wherein the top cover sheet (1) is provided with an assembly hole; A pin (2), wherein a stepped hole is provided on the pin (2); A pole (3), wherein a through hole (31) is provided in the middle of the pole (3), one end of the pole (3) passes through the assembly hole and the step hole and is riveted to the step hole, and the other end of the pole (3) protrudes out of the assembly hole in a radial direction of the assembly hole; An explosion-proof valve (4), the explosion-proof valve (4) is connected to the inner wall of the through hole (31), and the explosion-proof valve (4) blocks the through hole (31).

2. The battery structure assembly according to claim 1, characterized in that: A first step surface (33) is provided in the through hole (31), the first step surface (33) faces away from the pin (2), and the explosion-proof valve (4) is connected to the first step surface (33).

3. The battery structure assembly according to claim 2, characterized in that: The explosion-proof valve (4) is welded to the first step surface (33).

4. The battery structure assembly according to claim 1, characterized in that: The explosion-proof valve (4) is provided with a notch (41), the notch (41) being located on a side of the explosion-proof valve (4) facing away from the pin (2), or the notch (41) being located on a side of the explosion-proof valve (4) facing the pin (2), or the notch (41) being provided on both a side of the explosion-proof valve (4) facing away from the pin (2) and a side of the explosion-proof valve (4) facing the pin (2).

5. The battery structure assembly according to claim 1, characterized in that: It also includes an explosion-proof film (5), which is arranged in the through hole (31) and blocks the through hole (31). The explosion-proof film (5) is farther away from the top cover sheet (1) than the explosion-proof valve (4).

6. The battery structure assembly according to claim 5, characterized in that: A second step surface (34) is provided in the through hole (31), the second step surface (34) faces away from the pin (2), and the explosion-proof film (5) is connected to the second step surface (34).

7. The battery structure assembly according to any one of claims 1 to 6, characterized in that: The riveted end surface (32) of the pole (3) is flush with the surface of the pin (2) facing away from the top cover sheet (1).

8. The battery structure assembly according to any one of claims 1 to 6, characterized in that: The pole (3) includes a positive pole and a negative pole, the explosion-proof valve (4) is arranged in the through hole (31) of the positive pole to block the through hole (31) of the positive pole, and a blocking member is arranged in the through hole (31) of the negative pole to block the through hole (31) of the negative pole; Alternatively, the explosion-proof valve (4) is provided in the through hole (31) of the negative pole to block the through hole (31) of the negative pole, and the blocking member is provided in the through hole (31) of the positive pole to block the through hole (31) of the positive pole; Alternatively, two explosion-proof valves (4) are provided, and the two explosion-proof valves (4) are respectively provided in the through hole (31) of the positive electrode column and the through hole (31) of the negative electrode column.

9. The battery structure assembly according to any one of claims 1 to 6, characterized in that: It also includes an upper insulating member, one end of the pole (3) has a protruding portion (36), and the upper insulating member is located between the protruding portion (36) and the top cover sheet (1); And / or, further comprising an insulating sealing ring (7), wherein the insulating sealing ring (7) is sleeved on the pole (3), and the insulating sealing ring (7) is sandwiched between the pole (3) and the inner wall of the assembly hole; And / or, it further comprises a lower insulating member, wherein the lower insulating member is sandwiched between the top cover sheet (1) and the pin (2).

10. A battery, characterized in that It comprises a box body and a battery structure assembly according to any one of claims 1 to 9, wherein a top cover sheet (1) is arranged at the opening of the box body to form a shell of the battery together with the box body.

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