Lithium battery shell sealing structure

Abstract

The lithium battery shell sealing structure comprises a lower mounting shell and an upper mounting cover, clamping devices are arranged on the two opposite surfaces of the lower mounting shell, movable grooves are symmetrically formed in the upper surfaces of the clamping devices, moving grooves are formed in one side faces of the inner walls of the movable grooves, moving blocks are slidably connected into the moving grooves, and the moving blocks are connected with the upper mounting cover. A spring is arranged on one side face of the inner wall of the movable groove, a pulling plate is arranged at the free end of the spring, a clamping block is arranged on one side face of the pulling plate, a sealing groove is formed in the upper surface of the lower mounting shell, a concentric-square-shaped sealing strip is arranged on the bottom surface of the upper mounting cover, and clamping grooves are symmetrically formed in the bottom surface of the upper mounting cover. And a rubber strip is arranged on the bottom surface of the upper mounting cover. The upper installation cover is installed on the upper surface of the lower installation shell, then the concentric-square-shaped sealing strip arranged on the bottom surface of the upper installation cover is inserted into the sealing groove for sealing, meanwhile, the rubber strip can be clamped in the groove opening, double sealing is achieved, and the sealing effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery casing technology, and in particular relates to a sealing structure for lithium battery casing. Background Technology

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. With the development of science and technology, lithium batteries have become mainstream and are widely used in many fields such as power tools, electric bicycles, electric motorcycles, electric cars, military equipment, and aerospace.

[0003] After lithium batteries are manufactured, they need to be placed inside a casing to ensure their safety and lifespan. However, some lithium battery casings and covers do not have a sealing structure or only a single-layer sealing structure. At the same time, setting a sealing structure will reduce the thermal conductivity. Therefore, a lithium battery casing sealing structure is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a sealing structure for a lithium battery casing to solve existing problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a sealing structure for a lithium battery casing, comprising a lower mounting shell and an upper mounting cover. The lower mounting shell has snap-fit ​​devices on its two opposite surfaces. The upper surface of each snap-fit ​​device has symmetrically formed movable grooves. One side of the inner wall of each movable groove has a sliding groove. A sliding block is slidably connected within the sliding groove. A spring is provided on one side of the inner wall of the movable groove. A pull plate is provided at the free end of the spring. A locking block is provided on one side of the pull plate. The upper surface of the lower mounting shell has a sealing groove. The bottom surface of the upper mounting cover has a U-shaped sealing strip. The bottom surface of the upper mounting cover has symmetrically formed locking grooves. A rubber strip is provided on the bottom surface of the upper mounting cover. The upper surface of the lower mounting shell has a mounting cavity. The upper surface of the mounting cavity has a slot. The upper surface of the lower mounting shell has a heat-conducting groove. A heat dissipation plate is fixedly installed through the outer side of the lower mounting shell.

[0007] Furthermore, the heat-conducting groove is provided with several heat-conducting plates, which are arranged in a "V" shape. One side of the heat-conducting plate is fixedly connected to one side of the inner wall of the heat-conducting groove, and the other side of the heat-conducting plate is fixedly connected to the outer wall of the mounting cavity. The shape and size of the U-shaped sealing strip are adapted to the sealing groove. One side of the heat-conducting plate is attached to one side of the heat dissipation plate. The shape and size of the groove are adapted to the rubber strip.

[0008] Furthermore, one side of the pull plate is fixedly connected to one side of the moving block, the card block has a trapezoidal plate structure, the upper surface of the upper mounting cover is provided with a terminal post, the shape and size of the card block are adapted to the card slot, the U-shaped sealing strip is inserted into the sealing groove, and the card block is engaged with the card slot.

[0009] This utility model has the following beneficial effects:

[0010] This invention involves installing an upper mounting cover on the upper surface of a lower mounting shell. A U-shaped sealing strip on the bottom surface of the upper mounting cover is then inserted into a sealing groove for sealing. Simultaneously, a rubber strip is engaged within the groove, achieving a double seal and enhancing the sealing effect. During the installation of the upper mounting cover, one edge of the groove presses against the inclined surface of the locking block. The inclined surface of the locking block, under pressure, compresses a spring via a pull plate, moving it towards one side of the movable groove. When the upper mounting cover is fully installed on the upper surface of the lower mounting shell, the locking block is completely engaged in the groove. At this point, the spring returns to its original position, pushing the pull plate and further engaging the locking block into the groove, completing the assembly. This reduces the need for bolt assembly, thus enabling convenient installation and disassembly. This facilitates repair when the lithium battery is damaged, thereby extending the battery's lifespan.

[0011] When the battery is working, it generates a lot of heat. The heat-conducting plate is attached to the outer wall of the mounting cavity, which can absorb the heat emitted by the battery. The heat-conducting plate then conducts the heat to the surface of the heat sink for heat dissipation, thereby improving the heat dissipation performance of the battery device.

[0012] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the overall structure of a lithium battery casing sealing structure;

[0015] Figure 2 This is a front view of a lithium battery casing sealing structure;

[0016] Figure 3 for Figure 2 Cross-sectional view of section AA;

[0017] Figure 4 for Figure 3 Enlarged view of section B;

[0018] Figure 5 This is an exploded view of a lithium battery casing sealing structure.

[0019] The components represented by each number in the attached diagram are listed below: 1. Lower mounting shell; 101. Heat sink; 102. Mounting cavity; 103. Heat conduction groove; 104. Sealing groove; 105. Heat conduction plate; 12. Snap-fit ​​device; 1200. Movable groove; 120. Moving groove; 121. Moving block; 122. Spring; 123. Pull plate; 124. Locking block; 13. Groove; 2. Upper mounting cover; 201. U-shaped sealing strip; 202. Locking groove; 21. Terminal post; 22. Rubber strip. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1 - Figure 5As shown, this utility model is a lithium battery casing sealing structure, including a lower mounting shell 1 and an upper mounting cover 2. The lower mounting shell 1 has a snap-fit ​​device 12 on two opposite surfaces. The upper surface of the snap-fit ​​device 12 has symmetrically opened movable grooves 1200. One side of the inner wall of the movable groove 1200 has a moving groove 120. A moving block 121 is slidably connected in the moving groove 120. One side of the inner wall of the movable groove 1200 has a spring 122. The free end of the spring 122 has a pull plate 123. One side of the pull plate 123 has a locking block 124. The upper surface of the lower mounting shell 1 has a sealing groove 104. The bottom surface of the upper mounting cover 2 has a U-shaped sealing strip 201. The bottom surface of the upper mounting cover 2 has symmetrically opened locking grooves 202. The bottom surface of the upper mounting cover 2 has a rubber strip 22. The upper surface of the lower mounting shell 1 has a mounting cavity 102. The upper surface of the mounting cavity 102 has a slot 13.

[0024] Furthermore, a heat-conducting groove 103 is provided on the upper surface of the lower mounting shell 1, and a heat dissipation plate 101 is fixedly installed through the outer side of the lower mounting shell 1. Several heat-conducting plates 105 are provided in the heat-conducting groove 103. The heat-conducting plates 105 are arranged in a "V" shape. One side of the heat-conducting plate 105 is fixedly connected to one side of the inner wall of the heat-conducting groove 103, and the other side of the heat-conducting plate 105 is fixedly connected to the outer wall of the mounting cavity 102.

[0025] Furthermore, the shape and size of the U-shaped sealing strip 201 are adapted to the sealing groove 104, one side of the heat-conducting plate 105 is attached to one side of the heat dissipation plate 101, and the shape and size of the groove 13 are adapted to the rubber strip 22.

[0026] Furthermore, one side of the pull plate 123 is fixedly connected to one side of the moving block 121. The locking block 124 has a trapezoidal plate structure. The upper surface of the upper mounting cover 2 is provided with a terminal post 21. The shape and size of the locking block 124 are adapted to the locking groove 202. The U-shaped sealing strip 201 is inserted into the sealing groove 104, and the locking block 124 is locked into the locking groove 202.

[0027] It should be noted that this utility model installs the upper mounting cover 2 on the upper surface of the lower mounting shell 1, and then the U-shaped sealing strip 201 set on the bottom surface of the upper mounting cover 2 is inserted into the sealing groove 104 for sealing. At the same time, the rubber strip 22 will be stuck in the groove 13 to achieve double sealing and improve the sealing effect. During the installation of the upper mounting cover 2, one edge of the groove 202 presses against the inclined surface of the locking block 124. The inclined surface of the locking block 124 is subjected to force and compresses the spring 122 through the pull plate 123, moving it to one side in the movable groove 1200. When the upper mounting cover 2 is completely installed on the upper surface of the lower mounting shell 1, the locking block 124 will be completely stuck in the groove 202. At this time, the spring 122 resets and pushes the pull plate 123, thereby driving the locking block 124 to be stuck into the groove 202 to complete the assembly. This reduces the bolt assembly process, thereby achieving convenient installation and disassembly, and thus achieving the effect of repair when the lithium battery is damaged, thereby extending the service life of the lithium battery.

[0028] When the battery is working, it generates a lot of heat. The heat is absorbed by the heat-conducting plate 105 which is attached to the outer wall of the mounting cavity 102. The heat is then conducted to the surface of the heat sink 101 for heat dissipation, thereby improving the heat dissipation performance of the battery device.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lithium battery case sealing structure comprising a lower mounting case (1) and an upper mounting cover (2), characterized in that: The lower installation shell (1) is provided with a clamping device (12) on the opposite surfaces, the upper surface of the clamping device (12) is symmetrically provided with a movable slot (1200), the inner wall of the movable slot (1200) is provided with a moving slot (120) on one side, the moving slot (120) is slidably connected with a moving block (121), the inner wall of the movable slot (1200) is provided with a spring (122) on one side, the free end of the spring (122) is provided with a pull plate (123), the pull plate (123) is provided with a clamping block (124) on one side, the upper surface of the lower installation shell (1) is provided with a sealing groove (104), the bottom surface of the upper installation cover (2) is provided with a back-shaped sealing strip (201), the bottom surface of the upper installation cover (2) is symmetrically provided with a clamping groove (202), the bottom surface of the upper installation cover (2) is provided with a rubber strip (22), the upper surface of the lower installation shell (1) is provided with an installation cavity (102), and the upper surface of the installation cavity (102) is provided with a notch (13).

2. The lithium battery case sealing structure according to claim 1, wherein The upper surface of the lower installation shell (1) is provided with a heat conduction groove (103), and the outer side of the lower installation shell (1) is fixedly provided with a heat dissipation plate (101).

3. The lithium battery case sealing structure according to claim 2, wherein The heat conduction groove (103) is provided with a plurality of heat conduction plates (105), the heat conduction plates (105) are arranged in a "V" shape, one side of the heat conduction plates (105) is fixedly connected with one side of the inner wall of the heat conduction groove (103), and the other side of the heat conduction plates (105) is fixedly connected with the outer wall of the installation cavity (102).

4. The lithium battery case sealing structure according to claim 3, wherein The back-shaped sealing strip (201) is adapted in shape and size to the sealing groove (104), one side of the heat conduction plate (105) is attached to one side of the heat dissipation plate (101), and the notch (13) is adapted in shape and size to the rubber strip (22).

5. The lithium battery case sealing structure according to claim 1, wherein The pull plate (123) is fixedly connected with one side of the moving block (121), the clamping block (124) is a trapezoidal plate structure, and the upper surface of the upper installation cover (2) is provided with a wiring column (21).

6. The lithium battery case sealing structure according to claim 5, wherein The clamping block (124) is adapted in shape and size to the clamping groove (202), the back-shaped sealing strip (201) is inserted and matched with the sealing groove (104), and the clamping block (124) is clamped and matched with the clamping groove (202).

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