Lithium battery shell beneficial to guaranteeing sealing performance

Abstract

The utility model discloses a lithium battery shell beneficial to guaranteeing sealing performance, which comprises an aluminum shell, a sealing cover fixedly connected to the top of the aluminum shell, a fixing assembly arranged at the top of the sealing cover, a notch arranged on one side of the sealing cover, a power connection assembly fixedly connected to the inner side of the notch, and a connecting plug bush fixedly connected to the bottom of the sealing cover. A sealing gasket is fixedly connected to the bottom of the connecting plug bush, a sealing sleeve is movably connected to the outer side of the connecting plug bush, a limiting shaft is fixedly connected to the inner side of the aluminum outer shell, an insulating inner shell is fixedly connected to one end of the limiting shaft, a heat absorption groove is formed between the aluminum outer shell and the insulating inner shell, and heat absorption wax is installed in the heat absorption groove. Through the arrangement of the aluminum outer shell, the insulating inner shell, the heat absorption groove and the heat absorption wax, the heat dissipation performance of the lithium battery shell is improved on the premise that the sealing performance of the lithium battery shell is guaranteed, the situation that heat cannot be dissipated due to too high heat when the lithium battery is heated during operation is avoided, and therefore the service life of the lithium battery is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to a lithium battery casing that helps ensure sealing. Background Technology

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. The lithium metal battery was first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, MS Whittingham proposed and began to study lithium-ion batteries. Due to the highly reactive chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, lithium batteries were not used for a long time. With the development of science and technology, lithium batteries have now become the mainstream.

[0003] Existing patent document CN212085055U provides a lithium battery casing that facilitates sealing, including a casing assembly, a sealing assembly, and a mounting assembly. The mounting assembly houses a battery. Fixing blocks are fixedly connected to the two inner sidewalls of the casing near their top ends, and each fixing block has a through threaded hole. Through threaded holes are also formed on both sides of the upper surface of the cover plate. The sealing assembly includes a sealing plate. Receiving cavities are formed on the two inner sidewalls of the casing below the fixing blocks. A slider is fixedly connected to the end of a telescopic shaft, and the slider slides up and down within the receiving cavities. A post is fixedly connected to the upper surface of the slider. Through holes are formed on both sides of the upper surface of the sealing plate, and a handle is fixedly connected to the middle of the upper surface of the sealing plate. This invention has a simple structure, stable installation, and improves the sealing performance of the casing.

[0004] However, existing lithium battery casings that are designed to ensure sealing have limitations during use. Since the lithium battery is installed inside the casing, and the casing is designed with a sealed structure to ensure sealing, the inside of the casing is a sealed space. Because lithium batteries generate heat during operation, this structure is not conducive to heat dissipation. When the lithium battery gets hot, the heat cannot be dissipated, which can easily shorten the life of the lithium battery. Therefore, we propose a lithium battery casing that is designed to ensure sealing. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, the present invention provides a lithium battery casing that is conducive to ensuring sealing, so as to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery casing that facilitates sealing, comprising an aluminum casing, a sealing cap fixedly connected to the top of the aluminum casing, a fixing component provided on the top of the sealing cap, a slot provided on one side of the sealing cap, a power connection component fixedly connected to the inner side of the slot, a connecting sleeve fixedly connected to the bottom of the sealing cap, a sealing gasket fixedly connected to the bottom of the connecting sleeve, a sealing sleeve movably connected to the outer side of the connecting sleeve, a limiting shaft fixedly connected to the inner side of the aluminum casing, an insulating inner shell fixedly connected to one end of the limiting shaft, a heat-absorbing groove provided between the aluminum casing and the insulating inner shell, and heat-absorbing wax installed inside the heat-absorbing groove.

[0009] More preferably, the fixing component includes a mounting port and a fixing screw, the mounting port being opened on the top of the sealing cover, and the fixing screw being threaded into the interior of the mounting port.

[0010] More preferably, the power connection assembly includes a power connection frame, a power connection nut post, and a power connection screw. The power connection frame is fixedly connected to the inside of the slot, and the top of the power connection frame is fixedly connected to the power connection nut post through the slot. The top of the power connection nut post is threadedly connected to the power connection screw.

[0011] More preferably, both the sealing sleeve and the sealing gasket are made of rubber material, and the outer surfaces of the sealing sleeve and the sealing gasket are smooth.

[0012] More preferably, there are multiple limiting shafts, all of which are the same size and are arranged at equal intervals.

[0013] More preferably, the battery body is fixedly connected inside the insulating inner shell, and a fixing frame is fixedly connected at the four corners inside the insulating inner shell.

[0014] (III) Beneficial Effects

[0015] This utility model provides a lithium battery casing that helps ensure sealing, and has the following advantages:

[0016] (1) This type of lithium battery casing, which is beneficial to ensure sealing, is made of aluminum outer shell, insulating inner shell, heat absorption groove and heat absorption wax. When using the lithium battery casing, the operator places the battery body inside the insulating inner shell, then puts the sealing sleeve on the connecting sleeve of the sealing cover, and inserts the connecting sleeve and sealing gasket on the sealing cover into the heat absorption groove between the aluminum outer shell and the insulating inner shell. Then the fixing screw is connected to the fixing frame. At this time, a three-layer sealing structure is formed between the aluminum outer shell, the insulating inner shell and the sealing cover. When the battery body generates heat during operation, the heat will act on the insulating inner shell. At this time, the heat absorption wax in the heat absorption groove will absorb heat, and the heat-absorbing wax will turn into liquid, thereby playing a cooling role. At the same time, the heat on the wax will be absorbed by the aluminum outer shell, and the aluminum outer shell will quickly dissipate the heat by utilizing its own heat dissipation properties. In this way, the heat dissipation of the lithium battery casing is improved while ensuring the sealing of the lithium battery casing, avoiding the problem of the lithium battery not being able to dissipate heat due to excessive heat when it is running, thus improving the service life of the lithium battery. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the aluminum casing of this utility model;

[0019] Figure 3 This is a partial structural schematic diagram of the aluminum shell of this utility model;

[0020] Figure 4 This is a partial structural schematic diagram of the sealing cap of this utility model.

[0021] In the diagram: 1. Aluminum outer shell; 2. Sealing sleeve; 3. Sealing cap; 301. Connecting sleeve; 302. Sealing gasket; 4. Mounting port; 5. Fixing screw; 6. Groove; 7. Electrical connection bracket; 8. Electrical connection nut post; 9. Electrical connection screw; 10. Insulating inner shell; 1001. Fixing bracket; 11. Battery body; 12. Heat absorption groove; 13. Heat absorption wax; 14. Limiting shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4This utility model provides a technical solution: a lithium battery casing that is beneficial to ensuring sealing, including an aluminum casing 1, a sealing cover 3 fixedly connected to the top of the aluminum casing 1, a fixing component on the top of the sealing cover 3, a slot 6 on one side of the sealing cover 3, a power connection component fixedly connected to the inner side of the slot 6, a connecting sleeve 301 fixedly connected to the bottom of the sealing cover 3, a sealing gasket 302 fixedly connected to the bottom of the connecting sleeve 301, a sealing sleeve 2 movably connected to the outer side of the connecting sleeve 301, a limiting shaft 14 fixedly connected to the inner side of the aluminum casing 1, an insulating inner shell 10 fixedly connected to one end of the limiting shaft 14, a heat absorption groove 12 between the aluminum casing 1 and the insulating inner shell 10, and a heat absorption wax 13 installed inside the heat absorption groove 12.

[0024] In this embodiment, specifically, the fixing component includes a mounting port 4 and a fixing screw 5. The mounting port 4 is located on the top of the sealing cover 3, and the fixing screw 5 is threaded inside the mounting port 4. By placing the battery body 11 inside the insulating inner shell 10, and then putting the sealing sleeve 2 on the connecting sleeve 301 of the sealing cover 3, and inserting the connecting sleeve 301 and the sealing gasket 302 on the sealing cover 3 into the heat absorption groove 12 between the aluminum outer shell 1 and the insulating inner shell 10, and then connecting the fixing screw 5 to the fixing bracket 1001, the aluminum outer shell 1, the insulating inner shell 10, and the sealing cover 3 will be firmly fixed together to form a three-layer sealing structure.

[0025] In this embodiment, the power connection assembly specifically includes a power connection frame 7, a power connection nut post 8, and a power connection screw 9. The power connection frame 7 is fixedly connected to the inside of the slot 6. The top of the power connection frame 7 is fixedly connected to the power connection nut post 8, and the top of the power connection nut post 8 is threadedly connected to the power connection screw 9. By loosening the power connection screw 9, putting the power cord on the power connection screw 9, and then installing the power connection screw 9 on the power connection nut post 8, the power can be connected.

[0026] In this embodiment, specifically, both the sealing sleeve 2 and the sealing gasket 302 are made of rubber material, and the outer surfaces of the sealing sleeve 2 and the sealing gasket 302 are smooth, thereby ensuring the sealing performance between the sealing cover 3 and the insulating inner shell 10 and the aluminum outer shell 1.

[0027] In this embodiment, specifically, multiple limiting shafts 14 are provided. The multiple limiting shafts 14 are the same size and are arranged at equal intervals. The limiting shafts 14 make the insulating inner shell 10 and the aluminum outer shell 1 more firmly fixed and also limit the position of the insulating inner shell 10 inside the aluminum outer shell 1.

[0028] In this embodiment, specifically, the battery body 11 is fixedly connected inside the insulating inner shell 10, and the fixing brackets 1001 are fixedly connected at the four corners inside the insulating inner shell 10. The fixing brackets 1001 make the sealing cover 3 more firmly fixed to the insulating inner shell 10 and the aluminum outer shell 1 by fixing screws 5.

[0029] Working Principle: After installation, the installation, fixation, and safety protection of this utility model are checked first. When using the lithium battery casing, the operator places the battery body 11 inside the insulating inner shell 10, then puts the sealing sleeve 2 on the connecting sleeve 301 of the sealing cover 3, and inserts the connecting sleeve 301 and the sealing gasket 302 on the sealing cover 3 into the heat absorption groove 12 between the aluminum outer shell 1 and the insulating inner shell 10. Then, the fixing screw 5 is connected to the fixing bracket 1001. At this time, a three-layer sealing structure is formed between the aluminum outer shell 1, the insulating inner shell 10, and the sealing cover 3. When the battery body 11 generates heat during operation, the heat will act on the insulating inner shell 10. At this time, the heat-absorbing wax 13 in the heat absorption groove 12 will absorb heat, and the heat-absorbing wax will turn into liquid, thereby playing a cooling role. At the same time, the heat on the wax will be absorbed by the aluminum outer shell 1, and the aluminum outer shell 1 will quickly dissipate the heat using its own heat dissipation properties. This completes the use of this utility model. This utility model has a simple structure and is safe and convenient to use.

[0030] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium battery case for facilitating assurance of sealing, comprising an aluminum case (1), characterized by: The top of the aluminum shell (1) is fixedly connected with a sealing cover (3), a fixing assembly is arranged on the top of the sealing cover (3), a slot (6) is arranged on one side of the sealing cover (3), an electricity connecting assembly is fixedly connected to the inner side of the slot (6), a connecting plug sleeve (301) is fixedly connected to the bottom of the sealing cover (3), a sealing gasket (302) is fixedly connected to the bottom of the connecting plug sleeve (301), a sealing sleeve (2) is movably connected to the outer side of the connecting plug sleeve (301), a limiting shaft (14) is fixedly connected to the inner side of the aluminum shell (1), an insulating inner shell (10) is fixedly connected to one end of the limiting shaft (14), a heat absorbing groove (12) is arranged between the aluminum shell (1) and the insulating inner shell (10), and a heat absorbing wax (13) is arranged in the heat absorbing groove (12).

2. The lithium battery case for facilitating the assurance of the sealability according to claim 1, wherein: The fixing assembly comprises a mounting hole (4) and a fixing screw (5), the mounting hole (4) is arranged on the top of the sealing cover (3), and the fixing screw (5) is threadedly connected to the inside of the mounting hole (4).

3. The lithium battery case for facilitating the assurance of the sealability according to claim 1, wherein: The electricity connecting assembly comprises an electricity connecting frame (7), an electricity connecting nut column (8) and an electricity connecting screw (9), the electricity connecting frame (7) is fixedly connected to the inner side of the slot (6), the electricity connecting nut column (8) is fixedly connected to the top of the electricity connecting frame (7), and the electricity connecting screw (9) is threadedly connected to the top of the electricity connecting nut column (8).

4. The lithium battery case for facilitating the assurance of the sealability according to claim 1, wherein: The sealing sleeve (2) and the sealing gasket (302) are both made of rubber material, and the outer surfaces of the sealing sleeve (2) and the sealing gasket (302) are smooth.

5. The lithium battery case for facilitating a seal assurance according to claim 1, wherein: The limiting shaft (14) is provided in plurality, the plurality of limiting shafts (14) are of the same size, and the plurality of limiting shafts (14) are arranged at equal intervals.

6. The lithium battery case for facilitating a seal assurance according to claim 1, wherein: The inside of the insulating inner shell (10) is fixedly connected with a battery main body (11), and the inside of the insulating inner shell (10) is fixedly connected with a fixing frame (1001) at four corners.

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