Lithium ion battery pole piece structure convenient to disassemble

Abstract

The utility model relates to the technical field of lithium ion battery structures, in particular to a lithium ion battery pole piece structure convenient to disassemble. A protective shell covers the electric connection contact in the battery pole piece assembly, and the protective shell slides along a sliding rail in the battery pole piece assembly; a pressing assembly is inserted into the protective shell, the protective shell is in clearance fit with the pressing assembly, the pressing assembly is arranged in the protective shell in a pressing manner, and the pressing assembly is positioned above an electric connection contact in the battery pole piece assembly; a safety pin is inserted into the pressing assembly, and the pressing assembly is suspended on the protective shell. The safety pin is pulled out of the pressing assembly, then the pressing assembly is pressed downwards, the protective shell slides towards the opposite side of the protective shell till the pressing assembly is attached to the electric connection contact, then the pressing assembly can be taken down, the protective shell is taken down from the sliding rail, the electric connection contact can be completely exposed, and therefore disassembly of the protective sleeve is completed. Therefore, the use experience is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion battery structures, in particular to a lithium ion battery pole piece structure which is easy to disassemble. Background Art

[0002] Lithium-ion batteries have the characteristics of high energy density, no environmental pollution, and no memory effect. They are widely used in digital devices, new energy transportation, energy storage power stations and other fields. However, as the energy density of lithium-ion batteries continues to increase, safety issues are also a huge challenge. Many high-energy-density batteries face the risk of difficulty passing certain safety tests, such as needle puncture and heavy object impact safety tests. The pole piece of a lithium-ion battery is a metal conductor that leads the positive and negative electrodes from the battery cell. In layman's terms, the two poles of the battery are the electrical connection points during charging and discharging. During the use of the pole piece of a lithium-ion battery, the raised contact points above the pole piece are easily deformed or damaged by needle puncture or heavy object impact, which is likely to cause great safety hazards in the subsequent use process.

[0003] As disclosed in publication number CN219591428U, a lithium-ion battery pole piece structure is proposed, including: a battery pole piece, an electrical connection contact, a magnetic ring and a protective cover, wherein the electrical connection contact is fixedly mounted at the center of the top surface of the battery pole piece, the magnetic ring is fixedly mounted at the bottom of the outer diameter surface of the electrical connection contact, the protective cover is slidably connected to the top surface of the battery pole piece, and the inner diameter surface of the protective cover cooperates with the electrical connection contact. By fixing the magnetic ring on the circumferential surface of the electrical connection contact of the battery pole piece, the electrical connection contact protective cover is slidably connected to the top surface of the battery pole piece. The sliding protective cover is provided on the outer diameter surface of the electrical connection contact and cooperates with the magnetic ring to ensure that the sliding protective cover is sleeved outside the electrical connection contact to prevent the electrical connection contact from being punctured or deformed or damaged by heavy objects. During use, the protective cover only needs to be unfolded to expose the electrical connection contact, which does not hinder the normal use of the electrical connection contact.

[0004] When the device is in use, the protective covers are tightly fitted to each other, and there is no fulcrum on the outside of the protective covers to make the protective covers slide to the opposite side, so it is not convenient to peel off the protective covers, which affects the user experience. Therefore, a lithium-ion battery electrode is proposed to solve the above problem. Summary of the invention

[0005] The technical problem to be solved by the utility model is: in order to solve the problems existing in the prior art in the above-mentioned background technology, a lithium-ion battery pole piece structure which is easy to disassemble is provided.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a lithium-ion battery pole piece structure that is easy to disassemble, including a battery pole piece assembly, wherein a protective shell is provided on the electrical connection contact in the battery pole piece assembly, and the protective shell slides along a slide rail in the battery pole piece assembly;

[0007] A pressing assembly is inserted into the protective shell, and there is a clearance fit between the protective shell and the pressing assembly. The pressing assembly is pressed inside the protective shell and is located above the electrical connection contact in the battery pole piece assembly. A safety pin is inserted into the pressing assembly, and the pressing assembly is suspended on the protective shell.

[0008] Furthermore, the pressing assembly includes an inverted cone pressing block, and a buffer sheet is installed at the lower end of the inverted cone pressing block.

[0009] Furthermore, the inverted cone pressing block is divided into an inverted cone portion and a cylindrical portion, the cylindrical portion is provided with a through hole, the safety pin is inserted into the through hole, there is a distance between the outer cone surface of the inverted cone portion and the inner cone surface of the inverted cone hole in the protective shell, and the inverted cone pressing block and the protective shell are magnetically connected.

[0010] Furthermore, the inclination angle of the inverted cone portion is consistent with the inclination of the inverted cone hole.

[0011] Furthermore, the protective shell is a split structure, divided into a left split and a right split. The left split and the right split are assembled into a whole by being installed on the slide rail in the battery pole piece assembly. After the left split and the right split are assembled, an inverted cone hole is formed in the upper part, and a accommodating cavity is formed in the lower part.

[0012] Furthermore, the vertical cross-sectional shape of the left split body and the right split body is in a "Z" shape;

[0013] The split body comprises a vertical plate, the upper end of the vertical plate is provided with a first horizontal plate extending outward, the lower end of the vertical plate is provided with a second horizontal plate extending outward, and the first horizontal plate and the second horizontal plate extend in opposite directions;

[0014] The outer side surface of the first horizontal plate is an inclined surface, and the inclined surface is inclined from top to bottom;

[0015] The bottom surface of the second horizontal plate is provided with a slide groove matched with the slide rail in the battery pole piece assembly.

[0016] Furthermore, there is a gap between the bottom surface of the second transverse plate and the upper surface of the electrode sheet.

[0017] Furthermore, the downward pressing distance of the inverted cone pressing block is equal to the distance between the buffer sheet and the electrical connection contact.

[0018] Furthermore, the battery electrode assembly comprises an electrode sheet, on the plate surface of which are mounted symmetrically arranged slide rails, and on the electrode sheet sandwiched between two slide rails are mounted electrical connection contacts.

[0019] Furthermore, the cross-sectional shape of the slide rail is "T"-shaped, and the slide rail is a polyethylene slide rail. The polyethylene slide rail is slidably connected to the protective shell and is non-conductive.

[0020] The beneficial effects of the utility model are as follows: the utility model pulls the safety pin out of the pressing assembly, and then presses the pressing assembly downward, so that the protective shell slides to the opposite side thereof until the pressing assembly fits with the electrical connection contacts, and then the pressing assembly can be removed, and the protective shell can be removed from the slide rail to completely expose the electrical connection contacts, thereby completing the disassembly of the protective cover without affecting the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a top view of the utility model;

[0024] Figure 3 It is a top view of the battery pole piece assembly of the utility model;

[0025] Figure 4 For this utility model Figure 1 A cross-sectional view of

[0026] Figure 5 It is a top view of a split part of the protective shell of the utility model;

[0027] Figure 6 It is a cross-sectional view of a split part of the protective housing of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the pressing component of the utility model;

[0029] In the figure: 1. electrode sheet; 2. electrical connection contact point; 3. slide rail; 4. protective shell; 41. vertical plate; 42. first horizontal plate; 43. second horizontal plate; 401. slide groove; 402. inverted cone hole; 403. accommodating cavity; 5. pressing assembly; 501. inverted cone pressing block; 502. buffer sheet; 503. through hole; 6. safety pin. DETAILED DESCRIPTION

[0030] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0031] like Figures 1 to 7The illustrated embodiment shows a lithium-ion battery electrode structure that is easy to disassemble, comprising a battery electrode assembly, wherein the battery electrode assembly comprises an electrode sheet 1, on the plate surface of the electrode sheet 1 are mounted symmetrically arranged slide rails 3, and an electrical connection contact 2 is mounted on the electrode sheet 1 sandwiched between two slide rails 3;

[0032] A protective shell 4 is provided on the electrical connection contact 2 in the battery pole piece assembly, and the protective shell 4 slides along the slide rail 3 in the battery pole piece assembly. The protective shell 4 is an iron protective shell, and both ends of the protective shell 4 are open. The cross-sectional shape of the slide rail 3 is "T"-shaped, and the slide rail 3 is a polyethylene slide rail;

[0033] A pressing component 5 is inserted into the protective shell 4, and there is a clearance fit between the protective shell 4 and the pressing component 5. The pressing component 5 is pressed inside the protective shell 4, and the pressing component 5 is located above the electrical connection contact 2 in the battery electrode assembly; a safety pin 6 is inserted into the pressing component 5, and the pressing component 5 is suspended on the protective shell 4. By pulling the safety pin 6 out of the through hole 503 in the pressing component 5, the limit of the inverted cone pressing block 501 in the pressing component 5 by the safety pin 6 can be released.

[0034] like Figure 7 As shown, the pressing assembly 5 includes an inverted cone pressing block 501, a buffer sheet 502 is installed at the lower end of the inverted cone pressing block 501, and the inverted cone pressing block 501 is an inverted cone pressing block made of magnetic material. The downward pressing distance of the inverted cone pressing block 501 is equal to the distance between the buffer sheet 502 and the electrical connection contact 2.

[0035] The inverted cone pressing block 501 made of magnetic material is magnetically connected to the iron protective shell 4, so that the opposite side of the protective shell 4 fits tightly, and the inverted cone pressing block 501 is pressed down, and the inverted cone pressing block 501 is adapted to the inverted cone hole 402, and then the protective shell 4 slides to the opposite side until the buffer sheet 502 fits with the electrical connection contact 2, and then the inverted cone pressing block 501 and the buffer sheet 502 can be removed, and the protective shell 4 can be removed from the slide rail 3 to completely expose the electrical connection contact 2.

[0036] The inverted cone pressing block 501 is divided into an inverted cone portion and a cylindrical portion. The cylindrical portion is provided with a through hole 503, and the safety pin 6 is inserted into the through hole 503. There is a distance between the outer cone surface of the inverted cone portion and the inner cone surface of the inverted cone hole 402 in the protective shell 4. The inverted cone pressing block 501 and the protective shell 4 are magnetically connected.

[0037] The inclination angle of the inverted tapered portion is consistent with the inclination of the inverted tapered hole 402 .

[0038] like Figures 4 to 6As shown, the protective shell 4 is a split structure, divided into a left split and a right split. The left split and the right split are assembled into a whole by being installed on the slide rail 3 in the battery pole piece assembly. After the left split and the right split are assembled, an inverted cone hole 402 is formed in the upper part, and a accommodating cavity 403 is formed in the lower part.

[0039] like Figure 5 As shown, the vertical cross-section of the left and right split bodies is in a "Z" shape;

[0040] The split body includes a vertical plate 41, the upper end of the vertical plate 41 is provided with a first horizontal plate 42 extending outward, and the lower end of the vertical plate 41 is provided with a second horizontal plate 43 extending outward, and the first horizontal plate 42 and the second horizontal plate 43 extend in opposite directions;

[0041] The outer side surface of the first transverse plate 42 is an inclined surface, and the inclined surface is inclined from top to bottom;

[0042] The bottom surface of the second transverse plate 43 is provided with a slide groove 401 which cooperates with the slide rail 3 in the battery pole piece assembly.

[0043] There is a gap between the bottom surface of the second transverse plate 43 and the upper surface of the electrode sheet 1 .

[0044] Working process:

[0045] Step 1: Pull out the safety pin 6 from the through hole 503 to release the limit of the safety pin 6 on the inverted cone pressing block 501;

[0046] Step 2: Press the inverted cone pressing block 501, so that the inverted cone pressing block 501 fits with the inverted cone hole 402, and then slide the protective housing 4 to the opposite side until the buffer sheet 502 fits with the electrical connection contact 2;

[0047] Step 3: Remove the inverted cone pressing block 501 and the buffer sheet 502, and remove the protective shell 4 from the slide rail 3, so that the electrical connection contacts 2 can be completely exposed.

[0048] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A lithium-ion battery pole piece structure that is easy to disassemble, characterized in that: It comprises a battery pole piece assembly, wherein an electrical connection contact (2) in the battery pole piece assembly is covered with a protective shell (4), and the protective shell (4) slides along a slide rail (3) in the battery pole piece assembly; A pressing assembly (5) is inserted into the protective shell (4), and there is a clearance fit between the protective shell (4) and the pressing assembly (5). The pressing assembly (5) is pressed inside the protective shell (4), and the pressing assembly (5) is located above the electrical connection contact (2) in the battery electrode assembly; a safety pin (6) is inserted into the pressing assembly (5), and the pressing assembly (5) is suspended on the protective shell (4).

2. The easily disassembled lithium-ion battery pole piece structure according to claim 1, characterized in that: The pressing assembly (5) comprises an inverted cone pressing block (501), and a buffer sheet (502) is installed at the lower end of the inverted cone pressing block (501).

3. The easily disassembled lithium-ion battery pole piece structure according to claim 2, characterized in that: The inverted cone pressing block (501) is divided into an inverted cone portion and a cylindrical portion. The cylindrical portion is provided with a through hole (503), and the safety pin (6) is inserted into the through hole (503). There is a distance between the outer cone surface of the inverted cone portion and the inner cone surface of the inverted cone hole (402) in the protective shell (4). The inverted cone pressing block (501) and the protective shell (4) are magnetically connected.

4. The easily disassembled lithium-ion battery pole piece structure according to claim 3, characterized in that: The inclination angle of the inverted cone portion is consistent with the inclination of the inverted cone hole (402).

5. The easily disassembled lithium-ion battery pole piece structure according to claim 1, characterized in that: The protective shell (4) is a split structure, divided into a left split and a right split. The left split and the right split are assembled into a whole by being installed on the slide rail (3) in the battery pole piece assembly. After the left split and the right split are assembled, an inverted cone hole (402) is formed in the upper part, and a receiving cavity (403) is formed in the lower part.

6. The easily disassembled lithium-ion battery pole piece structure according to claim 5, characterized in that: The vertical cross-sectional shape of the left and right split bodies is "Z" shaped; The split body comprises a vertical plate (41), the upper end of the vertical plate (41) is provided with a first horizontal plate (42) extending outward, the lower end of the vertical plate (41) is provided with a second horizontal plate (43) extending outward, and the first horizontal plate (42) and the second horizontal plate (43) extend in opposite directions; The outer side surface of the first transverse plate (42) is an inclined surface, and the inclined surface is inclined from top to bottom; The bottom surface of the second transverse plate (43) is provided with a slide groove (401) that cooperates with the slide rail (3) in the battery pole piece assembly.

7. The easily disassembled lithium-ion battery pole piece structure according to claim 6, characterized in that: There is a gap between the bottom surface of the second transverse plate (43) and the upper surface of the electrode sheet (1).

8. The easily disassembled lithium-ion battery pole piece structure according to claim 2, characterized in that: The downward pressing distance of the inverted cone pressing block (501) is equal to the distance between the buffer sheet (502) and the electrical connection contact point (2).

9. The easily disassembled lithium-ion battery pole piece structure according to claim 1, characterized in that: The battery electrode assembly comprises an electrode sheet (1), a plate surface of the electrode sheet (1) is provided with symmetrically arranged slide rails (3), and an electrical connection contact (2) is provided on the electrode sheet (1) sandwiched between two slide rails (3).

10. The easily disassembled lithium-ion battery pole piece structure according to claim 1, characterized in that: The cross-sectional shape of the slide rail (3) is "T"-shaped, and the slide rail (3) is a polyethylene slide rail.

Images