Leakage-proof structure of lithium ion battery

Abstract

The utility model discloses a lithium ion battery leakproof structure, relates to the technical field of lithium ion battery, including lithium ion battery pack and leakproof shell structure, leakproof shell structure is composed of enclosure and side seal, one side of enclosure is provided with connecting seal groove, one side of side seal is fixed with embedded seal plate, and the embedded seal plate is fixed with the connecting seal groove. The embedded sealing plate is inserted into the connecting sealing groove, a sealing groove is further formed in one side of the fence, a sealing gasket matched with the sealing groove is arranged on one side of the side seal, connecting blocks are arranged on the two sides of the fence and the two sides of the side seal, and fixing bolts are arranged in the connecting blocks in a penetrating mode. According to the liquid leakage prevention shell structure, the liquid leakage prevention shell structure is composed of the enclosure and the side seal, and the connection sealing groove, the embedded sealing plate, the sealing groove and the sealing gasket are arranged, so that the sealing effect between the enclosure and the side seal is greatly improved after the enclosure and the side seal are connected, the sealing performance of the liquid leakage prevention shell structure is effectively guaranteed, and the liquid leakage phenomenon is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion batteries, in particular to a lithium ion battery anti-leakage structure. Background Art

[0002] Soft-pack lithium-ion batteries are liquid lithium-ion batteries covered with a polymer shell and structurally packaged in aluminum-plastic film. They have the advantages of light weight, large capacity, low internal resistance and flexible design. In the event of a safety hazard, the electrolyte inside the soft-pack lithium-ion battery will vaporize and cause bulging. The internal air pressure that cannot be released will have a strong impact on the sealing structure, eventually causing the packaging bag to crack and leak.

[0003] Therefore, it is very necessary to prevent the leakage of lithium-ion batteries. The sealing effect of existing lithium-ion batteries needs to be improved to avoid leakage. Therefore, the present invention proposes a lithium-ion battery leakage prevention structure. Utility Model Content

[0004] Technical problems solved

[0005] The purpose of the utility model is to remedy the deficiencies of the prior art and to provide a lithium ion battery leakage prevention structure.

[0006] Technical Solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lithium-ion battery leakage-proof structure, comprising a lithium-ion battery pack and a leakage-proof shell structure, the leakage-proof shell structure consisting of an enclosure and a side seal, a connecting sealing groove is provided on one side of the enclosure, an embedded sealing plate is fixed on one side of the side seal, the embedded sealing plate is inserted into the interior of the connecting sealing groove, a sealing groove is also provided on one side of the enclosure, a sealing gasket adapted to the sealing groove is provided on one side of the side seal, connecting blocks are provided on both sides of the enclosure and the side seal, fixing bolts are passed through the interior of the connecting block, the leakage-proof shell structure consists of the enclosure and the side seal, and through the setting of the connecting sealing groove, the embedded sealing plate, the sealing groove and the sealing gasket, the sealing effect between the enclosure and the side seal is greatly improved after the enclosure and the side seal are connected, thereby effectively ensuring the sealing of the leakage-proof shell structure and preventing leakage.

[0008] Preferably, an electrode column is connected to one side of the lithium-ion battery pack, the cross-section of the electrode column is stepped, and a second sealing gasket is sleeved on the upper portion of the electrode column.

[0009] Preferably, a protective sleeve is provided on the side seal, and the electrode column can be adapted to be inserted into the interior of the protective sleeve. A second sealing groove is provided on one side of the protective sleeve, and the second sealing gasket is adapted to the second sealing groove. The second sealing gasket is sleeved on the electrode column with a stepped cross-section, and the protective sleeve is provided with a second sealing groove, thereby greatly improving the sealing effect at the electrode column, further improving the sealing performance of the device, and preventing leakage.

[0010] Preferably, the leakage-proof housing structure has a lithium-ion battery pack placement space, and the lithium-ion battery pack is installed inside the lithium-ion battery pack placement space.

[0011] Preferably, a limit baffle is further provided in the lithium-ion battery pack placement space, and the limit baffle is movably installed in the lithium-ion battery pack placement space.

[0012] Preferably, a spring is fixedly connected to one side of the limit baffle, and a side of the spring away from the limit baffle is fixed to the inner wall of the liquid leakage-proof housing structure.

[0013] Beneficial effects:

[0014] Compared with the existing technology, the lithium-ion battery leakage prevention structure has the following beneficial effects:

[0015] 1. The liquid-leakage-proof shell structure adopted by the present invention is composed of a baffle and a side seal, and through the setting of a connecting sealing groove, an embedded sealing plate, a sealing groove, and a sealing gasket, the sealing effect between the baffle and the side seal is greatly improved after the baffle and the side seal are connected, thereby effectively ensuring the sealing of the liquid-leakage-proof shell structure and preventing leakage.

[0016] 2. The utility model has a second sealing gasket sleeved on the electrode column with a stepped cross section, and a second sealing groove is provided on the protective sleeve, which can greatly improve the sealing effect at the electrode column, further improve the sealing performance of the device, and prevent leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a schematic structural diagram of the liquid leakage-proof housing structure of the utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the utility model;

[0020] Figure 3 For this utility model Figure 2 A schematic diagram of the structure at point A in the middle;

[0021] Figure 4 For this utility model Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0022] Figure 5 This is a schematic diagram of the installation structure of the limit baffle of the utility model.

[0023] In the picture:

[0024] 1. Lithium-ion battery pack; 2. Leak-proof shell structure; 3. Electrode column; 4. Second sealing gasket; 5. Protective cover; 6. Second sealing groove; 7. Limit baffle; 8. Spring; 201. Enclosure; 202. Side seal; 203. Connecting sealing groove; 204. Embedded sealing plate; 205. Sealing groove; 206. Sealing gasket; 207. Connecting block; 208. Fixing bolt; 209. Space for lithium-ion battery pack. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1 to 5 As shown, the utility model provides a technical solution: a lithium-ion battery leakage prevention structure, including a lithium-ion battery pack 1 and a leakage prevention shell structure 2, the leakage prevention shell structure 2 is composed of a fence 201 and a side seal 202, one side of the fence 201 is provided with a connecting sealing groove 203, one side of the side seal 202 is fixed with an embedded sealing plate 204, the embedded sealing plate 204 is plugged into the inside of the connecting sealing groove 203, one side of the fence 201 is also provided with a sealing groove 205, and one side of the side seal 202 is provided with a sealing groove 205 that is adapted to the sealing groove 205. The sealing gasket 206 is provided, and connecting blocks 207 are provided on both sides of the enclosure 201 and the side seal 202. The connecting blocks 207 are penetrated by fixing bolts 208. The leak-proof shell structure 2 is composed of the enclosure 201 and the side seal 202, and is connected by the sealing groove 203, the embedded sealing plate 204, the sealing groove 205, and the sealing gasket 206. After the enclosure 201 and the side seal 202 are connected, the sealing effect between the two is greatly improved, thereby effectively ensuring the sealing of the leak-proof shell structure 2 and preventing leakage.

[0027] Please pay attention to Figure 2 、 Figure 3 and Figure 4 An electrode column 3 is connected to one side of the lithium-ion battery pack 1. The cross-section of the electrode column 3 is stepped. A second sealing gasket 4 is sleeved on the upper portion of the electrode column 3. A protective sleeve 5 is provided on the side seal 202. The electrode column 3 can be adaptably inserted into the interior of the protective sleeve 5. A second sealing groove 6 is provided on one side of the protective sleeve 5. The second sealing gasket 4 is adapted to the second sealing groove 6. The second sealing gasket 4 is sleeved on the electrode column 3 with a stepped cross-section. The protective sleeve 5 is provided with a second sealing groove 6, which can greatly improve the sealing effect at the electrode column 3, further improve the sealing performance of the device, and prevent leakage.

[0028] Please pay attention to Figure 5 The anti-leakage shell structure 2 has a lithium-ion battery pack placement space 209, and the lithium-ion battery pack 1 is installed inside the lithium-ion battery pack placement space 209. A limit baffle 7 is also provided in the lithium-ion battery pack placement space 209. The limit baffle 7 is movably installed in the lithium-ion battery pack placement space 209. A spring 8 is fixedly connected to one side of the limit baffle 7, and the side of the spring 8 away from the limit baffle 7 is fixed to the inner wall of the anti-leakage shell structure 2.

[0029] Working principle: The liquid-leakage-proof shell structure 2 is composed of a baffle 201 and a side seal 202, and by connecting the sealing groove 203, embedding the sealing plate 204, the sealing groove 205, and the setting of the sealing gasket 206, after the baffle 201 and the side seal 202 are connected, the sealing effect between the two is greatly improved, thereby effectively ensuring the sealing of the liquid-leakage-proof shell structure 2 and preventing leakage. A second sealing gasket 4 is sleeved on the electrode column 3 with a stepped cross-section, and a second sealing groove 6 is provided on the protective sleeve 5, thereby greatly improving the sealing effect at the electrode column 3, further improving the sealing of the device and preventing leakage.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium-ion battery anti-leakage structure, comprising a lithium-ion battery pack (1) and an anti-leakage housing structure (2), characterized in that: The liquid-leakage-proof housing structure (2) is composed of an enclosure (201) and a side seal (202); a connection sealing groove (203) is provided on one side of the enclosure (201); an embedded sealing plate (204) is fixed on one side of the side seal (202); the embedded sealing plate (204) is plugged into the interior of the connection sealing groove (203); a sealing groove (205) is further provided on one side of the enclosure (201); a sealing gasket (206) adapted to the sealing groove (205) is provided on one side of the side seal (202); connection blocks (207) are provided on both sides of the enclosure (201) and the side seal (202); fixing bolts (208) are passed through the interior of the connection block (207).

2. The lithium-ion battery leakage prevention structure according to claim 1, characterized in that: An electrode column (3) is connected to one side of the lithium-ion battery pack (1); the cross section of the electrode column (3) is stepped; and a second sealing gasket (4) is sleeved on the upper portion of the electrode column (3).

3. The lithium-ion battery leakage prevention structure according to claim 2, characterized in that: A protective sleeve (5) is provided on the side seal (202), and the electrode column (3) can be adapted to be plugged into the interior of the protective sleeve (5). A second sealing groove (6) is provided on one side of the protective sleeve (5), and the second sealing gasket (4) is adapted to the second sealing groove (6).

4. The lithium-ion battery leakage prevention structure according to claim 1, characterized in that: The anti-leakage shell structure (2) has a lithium-ion battery pack placement space (209), and the lithium-ion battery pack (1) is installed inside the lithium-ion battery pack placement space (209).

5. The lithium-ion battery leakage prevention structure according to claim 4, characterized in that: A limit baffle (7) is also provided in the lithium-ion battery pack placement space (209), and the limit baffle (7) is movably installed in the lithium-ion battery pack placement space (209).

6. The lithium-ion battery leakage prevention structure according to claim 5, characterized in that: A spring (8) is fixedly connected to one side of the limit baffle (7), and a side of the spring (8) away from the limit baffle (7) is fixed to the inner wall of the anti-leakage shell structure (2).

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