Lithium battery sealing structure

Abstract

The utility model discloses a lithium battery sealing structure, which relates to the technical field of lithium battery sealing and comprises a battery shell, a battery cover plate is movably connected onto the battery shell, the lower end of the battery cover plate is fixedly connected with a first sealing plate, and a first rubber sealing ring is arranged at the upper end of the battery shell. A first rubber sealing ring is arranged on the upper wall of the battery shell, a sealing ring fastening device is arranged between the battery cover plate and the first rubber sealing ring, and a self-locking structure is arranged on the inner side of the upper wall of the battery shell. When the first sealing ring shrinks and becomes small due to erosion, the fastening spring can press the second sealing plate downwards, the sealing performance of the lithium battery is guaranteed, the battery cover plate cannot be loosened due to long-time extrusion of the fastening spring, and therefore the sealing effect of the lithium battery can be maintained for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery sealing, in particular to a lithium battery sealing structure. Background Art

[0002] Patent announcement number CN219801088U patent records a lithium battery sealing structure, including a lithium battery housing, the top of the lithium battery housing is movably connected with a lithium battery cover plate, the bottom of the lithium battery cover plate is movably connected with a first sealing plate, and the bottom of the lithium battery cover plate and the inner cavity of the first sealing plate are fixedly connected with a second sealing plate. The utility model has the effect of sealing the lithium battery by setting a lithium battery housing, a lithium battery cover plate, a second sealing plate and a rubber sealing ring, and has the effect of sealing the connection between the lithium battery housing and the lithium battery cover plate by setting a first sealing plate and a reset spring, and solves the problem that the sealing ring gradually ages and shrinks under the influence of the internal solution and the external environment during long-term use, causing a gap to gradually form between the sealing ring and the battery shell, reducing the sealing effect of the lithium battery, thereby causing the lithium battery to leak, and the leakage will corrode the use equipment, thereby causing damage to the use equipment. However, when the structure is used, because the bolts will loosen after long-term use, the top cover will also loosen in the later stage, and finally the sealing effect of the lithium battery will become lower and lower, affecting the use of the lithium battery in the later stage.

[0003] Based on this, a lithium battery sealing structure is now provided, which can eliminate the disadvantages of the existing devices. Utility Model Content

[0004] The utility model aims to provide a lithium battery sealing structure to solve the problems in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lithium battery sealing structure comprises a battery shell, a battery cover plate movably connected to the battery shell, a first sealing plate fixedly connected to the lower end of the battery cover plate, a first rubber sealing ring provided at the upper end of the battery shell, a sealing ring fastening device provided between the battery cover plate and the first rubber sealing ring, and a self-locking structure provided on the inner side of the upper shell wall of the battery shell.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional scheme: the sealing ring fastening device includes a second sealing plate, a fastening spring, a positioning rod and a positioning groove, the second sealing plate is movably arranged on the first rubber sealing ring, the positioning rod is arranged on the side of the second sealing plate opposite to the position of the battery cover plate, the fastening spring is arranged on the positioning rod, and the battery cover plate is also provided with a positioning groove opposite to the position of the positioning rod.

[0009] In an optional scheme: the self-locking structure includes a slot, a limit spring, a block and a lock hole, the slot is arranged on the inner side of the upper shell wall of the battery shell, the limit spring is arranged in the slot, one end of the limit spring is connected to the block, and the lock hole is arranged on the first sealing plate.

[0010] In an optional solution, four positioning rods are provided and located at four corners of the second sealing plate.

[0011] In an optional solution, four of the card slots are provided on four side walls of the battery housing.

[0012] In an optional solution: a second rubber sealing ring is further provided at the lower end of the first sealing plate.

[0013] In an optional solution: the block is in the shape of a trapezoidal pyramid.

[0014] In an optional solution: when the battery is sealed, the card block and the lock hole are positioned relative to each other.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] During use of the utility model, the installation equipment installs the battery cover and the sealing ring fastening device together on the battery housing and locks them through the self-locking structure. When the first sealing ring shrinks due to erosion, the fastening spring will press down the second sealing plate to ensure the sealing of the lithium battery. The battery cover will not loosen due to long-term squeezing by the fastening spring, thereby maintaining the sealing effect of the lithium battery for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the connection between the battery cover and the sealing ring fastening device of the utility model.

[0019] Figure 3 It is a side sectional view of the battery casing of the utility model.

[0020] Notes on figure numbers: 100, battery housing; 200, battery cover; 300, first sealing plate; 400, first rubber sealing ring; 500, sealing ring fastening device; 501, second sealing plate; 502, fastening spring; 503, positioning rod; 504, positioning groove; 600, self-locking structure; 601, slot; 602, limit spring; 603, block; 604, lock hole; 700, second rubber sealing ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Example 1

[0023] In one embodiment, Figure 1-Figure 3 As shown, a lithium battery sealing structure includes a battery shell 100, a battery cover 200 is movably connected to the battery shell 100, a first sealing plate 300 is fixedly connected to the lower end of the battery cover 200, a first rubber sealing ring 400 is provided at the upper end of the battery shell 100, a sealing ring fastening device 500 is provided between the battery cover 200 and the first rubber sealing ring 400, and a self-locking structure 600 is provided on the inner side of the upper shell wall of the battery shell 100. Through the above arrangement, when the battery cover 200 is installed on the battery shell 100, the sealing ring fastening device 500 will be squeezed to make the first rubber sealing ring 400 fit tightly to the battery shell 100, and the first sealing plate 300 is locked by the self-locking structure 600.

[0024] In one embodiment, Figure 2 The sealing ring fastening device 500 shown includes a second sealing plate 501, a fastening spring 502, a positioning rod 503 and a positioning groove 504. The second sealing plate 501 is movably arranged on the first rubber sealing ring 400. The positioning rod 503 is arranged on the side of the second sealing plate 501 opposite to the battery cover 200. The fastening spring 502 is arranged on the positioning rod 503. The battery cover 200 is also provided with a positioning groove 504 opposite to the positioning rod 503. Through the above arrangement, when the battery cover 200 is installed on the battery housing 100, the second sealing plate 501 and the first rubber sealing ring 400 will be pushed to fit closely through the fastening spring 502. When the first rubber sealing ring 400 is eroded and deformed, the fastening spring 502 will press down the second sealing plate 501 to make it fit again with the first rubber sealing ring 400.

[0025] In one embodiment, Figure 3The self-locking structure 600 shown includes a slot 601, a limit spring 602, a block 603 and a lock hole 604, wherein the slot 601 is arranged on the inner side of the upper shell wall of the battery housing 100, the limit spring 602 is arranged in the slot 601, one end of the limit spring 602 is connected to the block 603, and the lock hole 604 is arranged on the first sealing plate 300. Through the above arrangement, when the battery cover 200 is installed on the battery housing 100, the first sealing plate 300 arranged at its lower end will be locked when it drops to a certain height, thereby ensuring the overall sealing of the lithium battery without falling off and affecting its use.

[0026] In one embodiment, Figure 2 As shown, four positioning rods 503 are provided at the four corners of the second sealing plate 501 . Through the above arrangement, the four corners of the second sealing plate 501 can be acted upon by the fastening springs 502 to adapt to the uneven deformation of the first rubber sealing ring 400 .

[0027] In one embodiment, Figure 3 As shown, four of the card slots 601 are located on the four side walls of the battery housing 100. Through the above arrangement, the battery cover 200 is installed more firmly and is not easy to fall off.

[0028] Example 2

[0029] In one embodiment, Figure 2 As shown, a second rubber sealing ring 700 is further provided at the lower end of the first sealing plate 300. Through the above arrangement, the corrosion time of the first rubber sealing ring 400 is prolonged, thereby extending the service life of the lithium battery.

[0030] In one embodiment, Figure 3 The block 603 is in the shape of a trapezoidal prism. With the above arrangement, when the first sealing plate 300 descends, it is easier to squeeze the block 603 to retract, while preventing the first sealing plate 300 from rising.

[0031] In one embodiment, Figure 2-Figure 3 As shown, when the battery is sealed, the block 603 and the lock hole 604 are positioned relative to each other. Through the above arrangement, the accuracy of installation is guaranteed and the self-locking is made more secure.

[0032] The above embodiment discloses a lithium battery sealing structure. When in use, the battery cover 200 is arranged on the battery housing 100. The battery cover 200 will push the sealing ring fastening device 500 downward through the positioning groove 504 arranged at its lower end, so that the second sealing plate 501 is tightly fitted with the first rubber sealing ring 400. At the same time, the card groove 601 arranged on the first sealing plate 300 also reaches the position opposite to the position of the card block 603 on the battery housing 100. The card block 603 is popped out by the limit spring 602 to be locked. In this way, when the lithium battery works for a period of time, the first rubber sealing ring 400 is eroded, shrunk and deformed, and the fastening spring 502 will press the second sealing plate 501 downward through the locked battery cover 200 to make it fit again to ensure a good sealing effect.

[0033] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A lithium battery sealing structure, comprising a battery housing (100), wherein a battery cover (200) is movably connected to the battery housing (100), a first sealing plate (300) is fixedly connected to the lower end of the battery cover (200), and a first rubber sealing ring (400) is provided at the upper end of the battery housing (100), characterized in that: A sealing ring fastening device (500) is provided between the battery cover plate (200) and the first rubber sealing ring (400), and a self-locking structure (600) is provided on the inner side of the upper shell wall of the battery shell (100).

2. A lithium battery sealing structure according to claim 1, characterized in that: The sealing ring fastening device (500) comprises a second sealing plate (501), a fastening spring (502), a positioning rod (503) and a positioning groove (504); the second sealing plate (501) is movably arranged on the first rubber sealing ring (400); the positioning rod (503) is arranged on a side of the second sealing plate (501) opposite to the battery cover (200); the fastening spring (502) is arranged on the positioning rod (503); and the battery cover (200) is also provided with a positioning groove (504) opposite to the positioning rod (503).

3. A lithium battery sealing structure according to claim 1, characterized in that: The self-locking structure (600) comprises a card slot (601), a limit spring (602), a card block (603) and a lock hole (604); the card slot (601) is arranged on the inner side of the upper shell wall of the battery shell (100); the limit spring (602) is arranged in the card slot (601); one end of the limit spring (602) is connected to the card block (603); and the lock hole (604) is arranged on the first sealing plate (300).

4. A lithium battery sealing structure according to claim 2, characterized in that: Four positioning rods (503) are provided and located at the four corners of the second sealing plate (501).

5. A lithium battery sealing structure according to claim 3, characterized in that: Four of the card slots (601) are located on four side walls of the battery housing (100).

6. A lithium battery sealing structure according to claim 1, characterized in that: A second rubber sealing ring (700) is also provided at the lower end of the first sealing plate (300).

7. A lithium battery sealing structure according to claim 3, characterized in that: The clamping block (603) is in the shape of a trapezoidal pyramid.

8. A lithium battery sealing structure according to claim 3, characterized in that: When the battery is sealed, the clamping block (603) and the locking hole (604) are positioned opposite to each other.

Images