A waterproof structure for a lithium battery pack

Abstract

This utility model relates to the field of lithium battery technology, and in particular to a waterproof structure for a lithium battery pack, including a housing, a battery body disposed inside the housing, a locking slide rod slidably connected to the outside of the housing, a first spring fixedly connected inside the locking slide rod, a positioning buckle fixedly connected to the end of the first spring away from the locking slide rod, a first button fixedly connected to the upper end of the positioning buckle, a locking tongue slider fixedly connected to the inside of the locking slide rod, a second spring fixedly connected inside the locking tongue slider, a first locking block fixedly connected to the end of the second spring away from the locking tongue slider, and third springs disposed inside the left and right ends of the housing, a second button fixedly connected to the end of the third spring away from the housing; through the design cooperation of the locking slide rod and the first spring, the battery body can be placed inside the housing, and pulling the locking slide rod forward tightens the first spring on the inside, making the left and right sides of the housing close more tightly.

Description

Technical Field

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

[0002] A lithium battery pack is a modular energy storage unit formed by combining multiple individual battery cells in series and parallel, integrating a battery management system, thermal management components, and structural protection components. It is widely used in consumer electronics, electric vehicles, and energy storage systems.

[0003] Patent specification CN221747385U discloses a waterproof structure for a lithium battery pack, including a lithium battery body, a waterproof structure body on the outer surface of the lithium battery body, two first sealing rings symmetrically fixed to the sidewalls of the waterproof structure body, and a connecting wire connected to one end of the lithium battery body through the waterproof structure body. In this solution, the waterproof structure utilizes stabilizing components. During assembly of the waterproof structure body and the lithium battery body, the two sides of the lithium battery body are first placed in the middle of two sets of stabilizing components. Then, the first and second waterproof shells are snapped together. Next, the hydraulic lifting rod inside the stabilizing components is activated, causing it to move the second mounting plate and stabilizing pad until the surface of the stabilizing pad is in contact with the surface of the lithium battery body. This secures the lithium battery body inside the waterproof structure body, thus preventing collisions between the lithium battery body and the waterproof structure body.

[0004] However, in implementing the relevant technology, the above-mentioned waterproof structure for lithium battery packs has the following problems: the scheme of using a hydraulic lifting rod to drive the stabilizing pad has the risk of leakage, and long-term use may lead to seal failure or insufficient power, affecting the fixing effect on the lithium battery body. The maintenance cost of hydraulic components is high, and their performance is prone to degradation under extreme temperature or vibration environments. In view of this, a waterproof structure for lithium battery packs is provided to overcome the above defects. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a waterproof structure for lithium battery packs.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a waterproof lithium battery PACK structure, including a housing, a battery body disposed inside the housing, a locking slide rod slidably connected to the outer side of the housing, a first spring fixedly connected inside the locking slide rod, a positioning buckle fixedly connected to the end of the first spring away from the locking slide rod, a first button fixedly connected to the upper end of the positioning buckle, a locking tongue slider fixedly connected to the inner side of the locking slide rod, a second spring fixedly connected inside the locking tongue slider, a first locking block fixedly connected to the end of the second spring away from the locking tongue slider, third springs disposed inside the left and right ends of the housing, a second button fixedly connected to the end of the third spring away from the housing, a locking buckle fixedly connected to the rear end of the second button, a sealing ring disposed inside the housing, a second waterproof frame fixedly connected to the front end of the housing, and a connecting wire fixedly connected inside the second waterproof frame.

[0007] As a further description of the above technical solution: the outer side of the positioning buckle is slidably connected to the inside of the locking slide rod, the outer side of the first locking block is slidably connected to the inside of the locking tongue slider, the outer side of the second button and the locking buckle are slidably connected to the left and right ends of the inside of the housing, the inner side of the second button and the locking buckle are in contact with the outer side of the locking slide rod, and the second button and the locking buckle are moved by the second spring, thereby locking the locking slide rod.

[0008] As a further description of the above technical solution: the locking slide bar has a hollow structure inside, and the first spring and the positioning buckle are both inside the hollow structure. A slot is opened on the outside of the hollow structure, and the first button and the positioning buckle are fixedly connected through the slot, so that the positioning buckle can lock the locking slide bar.

[0009] As a further description of the above technical solution: square grooves are provided at both ends of the housing, and a protrusion is provided on the inner side of the locking slide rod. The shape and size of the cross-section of the protrusion match the shape and size of the cross-section of the square groove, so that the protrusion provided inside the locking slide rod can slide along the inside of the square groove.

[0010] As a further description of the above technical solution: the square grooves at the left and right ends of the housing are provided with a first slot and a second slot, and the second button is located in the first slot, the locking buckle is located in the second slot, and the distance between the second button and the locking buckle matches the front and rear length of the locking slide rod, so that the second button and the locking buckle lock the locking slide rod.

[0011] As a further description of the above technical solution: the shell has a groove inside, and the shape and size of the groove cross-section match the shape and size of the sealing ring cross-section, so that the sealing ring can prevent moisture from entering the shell when the shell is closed.

[0012] As a further description of the above technical solution: the housing has a hollow structure inside, and the battery body is located inside the hollow structure. The inner contour of the hollow structure matches the outer contour of the battery body, so that the battery can be placed inside the housing.

[0013] This utility model has the following beneficial effects:

[0014] The waterproof structure of the lithium battery PACK designed in this utility model allows the battery body to be placed inside the housing through the design and cooperation of the locking slide rod and the first spring. Pulling the locking slide rod forward tightens the first spring on the inner side, making the housing on the left and right sides close more tightly and improving the waterproof effect of the housing. The design of the third spring, the second button and the locking buckle can lock the locking slide rod with the second button and the locking buckle to prevent the locking slide rod from falling off the outside of the housing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the battery body distribution structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the locking slide bar structure of this utility model;

[0018] Figure 4 This utility model Figure 3 Schematic diagram of the positioning buckle structure at point A;

[0019] Figure 5 This utility model Figure 3 Schematic diagram of the structure at point B;

[0020] Figure 6 This is a schematic diagram of the cross-sectional structure of the shell of this utility model;

[0021] Figure 7 This is a schematic diagram of the sealing ring distribution structure of this utility model.

[0022] Legend:

[0023] 1. Housing; 2. Battery body; 3. Locking slide bar; 4. First spring; 5. First button; 6. Positioning buckle; 7. Locking tongue slider; 8. Second spring; 9. First locking block; 10. Third spring; 11. Locking buckle; 12. Second button; 13. Sealing ring; 14. Second waterproof frame; 15. Connecting wire. Detailed Implementation

[0024] Reference Figures 1 to 7This utility model provides a waterproof structure for a lithium battery pack, including a housing 1, a battery body 2 inside the housing 1, a locking slide rod 3 slidably connected to the outside of the housing 1, a first spring 4 welded inside the locking slide rod 3, a positioning buckle 6 welded to the end of the first spring 4 away from the locking slide rod 3, a first button 5 welded to the upper end of the positioning buckle 6, a locking tongue slider 7 welded to the inside of the locking slide rod 3, a second spring 8 welded inside the locking tongue slider 7, a first locking block 9 welded to the end of the second spring 8 away from the locking tongue slider 7, third springs 10 inside the left and right ends of the housing 1, a second button 12 welded to the end of the third spring 10 away from the housing 1, a locking buckle 11 welded to the rear end of the second button 12, a sealing ring 13 inside the housing 1, a second waterproof frame 14 glued to the front end of the housing 1, and a connecting wire 15 welded inside the second waterproof frame 14.

[0025] As a further implementation of the above technical solution: the outer side of the positioning buckle 6 is slidably connected to the inside of the locking slide bar 3, the outer side of the first locking block 9 is slidably connected to the inside of the locking tongue slider 7, the outer side of the second button 12 and the locking buckle 11 are slidably connected to the left and right ends of the inside of the housing 1, the inner side of the second button 12 and the locking buckle 11 are in contact with the outer side of the locking slide bar 3, and the second button 12 and the locking buckle 11 are moved by the second spring 8, thereby locking the locking slide bar 3.

[0026] As a further implementation of the above technical solution: the locking slide bar 3 has a hollow structure inside, and the first spring 4 and the positioning buckle 6 are both inside the hollow structure. A slot is opened on the outside of the hollow structure, and the first button 5 and the positioning buckle 6 are fixedly connected through the slot, so that the positioning buckle 6 can lock the locking slide bar 3.

[0027] As a further implementation of the above technical solution: square grooves are provided at both ends of the housing 1, and a protrusion is provided on the inner side of the locking slide rod 3. The shape and size of the cross-section of the protrusion match the shape and size of the cross-section of the square groove, so that the protrusion provided inside the locking slide rod 3 can slide along the inside of the square groove.

[0028] As a further implementation of the above technical solution: a first slot and a second slot are provided on the inner side of the square grooves opened at the left and right ends of the housing 1, and the second button 12 is located in the first slot, the locking buckle 11 is located in the second slot, and the distance between the second button 12 and the locking buckle 11 matches the front and rear length of the locking slide bar 3, so that the second button 12 and the locking buckle 11 lock the locking slide bar 3.

[0029] As a further implementation of the above technical solution: a groove is provided inside the shell 1, and the shape and size of the groove cross-section are matched with the shape and size of the sealing ring 13 cross-section, so that when the shell 1 is closed, the sealing ring 13 can prevent moisture from entering the interior of the shell 1.

[0030] As a further implementation of the above technical solution: the housing 1 has a hollow structure inside, and the battery body 2 is located inside the hollow structure. The inner contour of the hollow structure matches the outer contour of the battery body 2, so that the battery can be placed inside the housing 1.

[0031] Working principle:

[0032] When using this utility model, press the first button 5 to compress the positioning buckle 6 and the first spring 4 downwards, causing the locking slide bar 3 to separate. Then, place the battery body 2 inside the housing 1, and then close the locking slide bars 3 at both ends. The sealing ring 13 prevents water from entering the housing 1, while the second waterproof frame 14 prevents water from entering the connecting wire 15, causing the locking slide bar 3 to clamp the housing 1. Pull the locking slide bar 3, causing the locking slide bar 3 to drive the second spring 8 and the first locking block 9 inside the locking tongue slider 7 to move. The positioning groove inside the housing 1 compresses the second spring 8 and the first locking block 9, causing the locking slide bar 3 to increase its clamping force on the housing 1. Then, the locking slide bar 3 presses the locking buckle 11, and the third spring 10 pushes the second button 12 and the inner side of the locking buckle 11 to engage the locking slide bar 3, preventing the locking slide bar 3 from loosening.

[0033] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waterproof structure for a lithium battery pack, comprising a housing (1), characterized in that: The housing (1) contains a battery body (2). A locking slide rod (3) is slidably connected to the outside of the housing (1). A first spring (4) is fixedly connected inside the locking slide rod (3). A positioning buckle (6) is fixedly connected to the end of the first spring (4) away from the locking slide rod (3). A first button (5) is fixedly connected to the upper end of the positioning buckle (6). A locking tongue slider (7) is fixedly connected to the inside of the locking slide rod (3). A second spring (8) is fixedly connected inside the locking tongue slider (7). A first locking block (9) is fixedly connected to one end away from the locking tongue slider (7). A third spring (10) is provided inside the left and right ends of the housing (1). A second button (12) is fixedly connected to one end of the third spring (10) away from the housing (1). A locking buckle (11) is fixedly connected to the rear end of the second button (12). A sealing ring (13) is provided inside the housing (1). A second waterproof frame (14) is fixedly connected to the front end of the housing (1). A connecting wire (15) is fixedly connected inside the second waterproof frame (14). 2.The waterproof structure of a lithium battery PACK according to claim 1, characterized in that: The outer side of the positioning buckle (6) is slidably connected to the inside of the locking slide bar (3), the outer side of the first card block (9) is slidably connected to the inside of the locking tongue slider (7), the outer side of the second button (12) and the locking buckle (11) are slidably connected to the left and right ends of the inside of the housing (1), and the inner side of the second button (12) and the locking buckle (11) is in contact with the outer side of the locking slide bar (3). 3.The waterproof structure of a lithium battery PACK according to claim 1, characterized in that: The locking slide bar (3) has a hollow structure inside, and the first spring (4) and the positioning buckle (6) are both inside the hollow structure. The hollow structure has a slot on the outside, and the first button (5) and the positioning buckle (6) are fixedly connected through the slot.

4. The waterproof structure of a lithium battery PACK according to claim 1, characterized in that: The housing (1) has square grooves at both ends, and the locking slide rod (3) has a protrusion on its inner side. The shape and size of the protrusion's cross-section match the shape and size of the square groove's cross-section.

5. The waterproof structure of a lithium battery PACK according to claim 4, characterized in that: The housing (1) has a first slot and a second slot on the inner side of the square grooves at both ends. The second button (12) is located in the first slot, and the locking buckle (11) is located inside the second slot. The distance between the second button (12) and the locking buckle (11) matches the front and rear length of the locking slide bar (3). 6.The waterproof structure of a lithium battery PACK according to claim 1, characterized in that: The housing (1) has a groove inside, and the shape and size of the groove cross-section match the shape and size of the sealing ring (13) cross-section. 7.The waterproof structure of a lithium battery PACK according to claim 1, characterized in that: The housing (1) has a hollow structure inside, and the battery body (2) is located inside the hollow structure. The inner contour of the hollow structure matches the outer contour of the battery body (2).

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