A waterproof external structure on a lithium battery pack shell

Abstract

This application relates to a waterproof external connection structure for a lithium battery pack casing, including a casing, a power socket, and a signal cable socket. One end of the casing has a recessed groove, and both sides of the recess have a first positioning hole and a second positioning hole for installing the power socket and signal cable socket, respectively. A first water-retaining ring and a second water-retaining ring protrude from the periphery of the first and second positioning holes, respectively. The top of the power socket has a first positioning flange adapted to the bottom of the recessed groove, and below the first positioning flange is a first sealing gasket adapted to the outer wall of the first water-retaining ring. The top of the signal cable socket has a second positioning flange adapted to the bottom of the recessed groove, and below the second positioning flange is a second sealing gasket adapted to the outer wall of the second water-retaining ring. This utility model belongs to the field of battery pack external connection technology, and provides a power socket and signal cable socket with good waterproof performance.

Description

Technical Field

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

[0002] The existing external structure of lithium battery packs has the following problems: 1) The power interface and signal interface are set separately, which takes up a lot of space and is complicated to install; 2) The waterproof design mostly uses a single sealing ring, which is prone to sealing failure after long-term use; 3) The interface lacks anti-misinsertion design, which can easily lead to incorrect insertion.

[0003] To address the aforementioned issues, there is an urgent need for an effective waterproof and dustproof external structure for the outer casing of lithium battery packs. Utility Model Content

[0004] Therefore, it is necessary to provide a waterproof external structure for the lithium battery pack casing, and the specific technical solution is as follows.

[0005] A waterproof external structure for a lithium battery pack casing includes a casing, a power socket, and a signal line socket. One end of the casing is provided with a recessed groove, and the two sides of the recessed groove are respectively provided with a first positioning hole and a second positioning hole for installing the power socket and the signal line socket. The periphery of the first positioning hole and the second positioning hole are respectively provided with a first water-blocking ring and a second water-blocking ring.

[0006] The top of the power socket is provided with a first positioning protrusion that adapts to the bottom of the sink, and a first sealing gasket that adapts to the outer wall of the first water-blocking ring is provided below the first positioning protrusion; the top of the signal line socket is provided with a second positioning protrusion that adapts to the bottom of the sink, and a second sealing gasket that adapts to the outer wall of the second water-blocking ring is provided below the second positioning protrusion.

[0007] Furthermore, the slot of the power socket is provided with a power terminal, and the slot of the signal line socket is provided with a signal transmission terminal.

[0008] Furthermore, first screw holes are provided on both sides of the first positioning hole, and first connecting holes corresponding to the first screw holes are provided on both sides of the first positioning protrusion and the first sealing gasket.

[0009] The second positioning hole has second screw holes on both sides, and the second positioning protrusion and the second sealing gasket have second connecting holes on both sides corresponding to the second screw holes.

[0010] Furthermore, the first positioning hole is a triangular socket, and the upper part of the power socket is provided with a triangular positioning part that matches the triangular socket. The slot cross-section inside the power socket is triangular.

[0011] The second positioning hole is a square socket, and the upper part of the signal line socket is provided with a square positioning part that matches the square socket. The slot inside the signal line socket has a square cross-section.

[0012] Furthermore, a first sealing cover is connected to one side of the first sealing gasket, and the bottom surface of the first sealing cover is provided with a first sealing block that is adapted to the slot in the power socket.

[0013] Furthermore, a second sealing cover is connected to one side of the second sealing gasket, and the bottom surface of the second sealing cover is provided with a second sealing block that is adapted to the slot in the signal line socket.

[0014] Furthermore, the bottom surface of the second positioning protrusion surrounds the outer wall of the signal line socket with a positioning groove, and the second sealing gasket has a protruding positioning boss that matches the positioning groove.

[0015] Compared with existing technologies, this utility model has the following beneficial effects:

[0016] The waterproof external structure on the lithium battery pack casing of this utility model features a waterproof power socket and signal cable socket. The power socket and signal cable socket can be quickly inserted into the casing via the first and second positioning holes. A first and second sealing gasket are used for a sealed connection, preventing rainwater and dust from entering the casing. Furthermore, a first and second water-retaining ring are provided around the first and second positioning holes, forming a waterproof barrier that prevents rainwater and dust entering the settling tank from entering the first and second positioning holes, further improving the sealing performance and enhancing waterproofing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural view of the waterproof external structure on the lithium battery pack shell of this utility model;

[0019] Figure 2 This is a top view of the waterproof external structure on the lithium battery pack shell of this utility model;

[0020] Figure 3 This is a three-dimensional structural view of the lithium battery pack shell in this utility model;

[0021] Figure 4This is a top view of the structure of the lithium battery pack shell in this utility model;

[0022] Figure 5 This is an enlarged perspective view of the electrical socket structure in this utility model;

[0023] Figure 6 This is an enlarged perspective view of the structure of the first sealing gasket in this utility model;

[0024] Figure 7 This is an enlarged front view of the structure of the first sealing gasket in this utility model;

[0025] Figure 8 This is an enlarged perspective view of the signal line socket in this utility model;

[0026] Figure 9 This is an enlarged bottom view of the signal line socket in this utility model;

[0027] Figure 10 This is an enlarged perspective view of the structure of the second sealing gasket in this utility model;

[0028] Figure 11 This is an enlarged side view of the structure of the second sealing gasket in this utility model.

[0029] Explanation of reference numerals in the attached drawings: 1. Outer shell; 2. Power socket; 3. Signal line socket; 4. Recessed groove; 5. First positioning hole; 6. Second positioning hole; 7. First water-retaining ring; 8. Second water-retaining ring; 9. First positioning protrusion; 10. First sealing gasket; 11. Second positioning protrusion; 12. Second sealing gasket; 13. Power terminal; 14. Signal transmission terminal; 15. First screw hole; 16. First connecting hole; 17. Second screw hole; 18. Second connecting hole; 19. Triangular positioning part; 20. Square positioning part; 21. First sealing cover; 22. First sealing block; 23. Second sealing cover; 24. Second sealing block; 25. Positioning groove; 26. Positioning boss. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] The embodiments of this utility model will be described below based on its overall structure.

[0032] Reference Figures 1-11As shown, this embodiment provides a waterproof external structure for a lithium battery pack casing, including a casing 1, a power socket 2, and a signal line socket 3. One end of the casing 1 is provided with a groove 4, and the two sides of the groove 4 are respectively provided with a first positioning hole 5 and a second positioning hole 6 for installing the power socket 2 and the signal line socket 3. The periphery of the first positioning hole 5 and the second positioning hole 6 are respectively provided with a first water-blocking ring 7 and a second water-blocking ring 8.

[0033] The top of the power socket 2 is provided with a first positioning protrusion 9 that is adapted to the bottom of the sink 4, and a first sealing gasket 10 adapted to the outer wall of the first water-blocking ring 7 is provided below the first positioning protrusion 9; the top of the signal line socket 3 is provided with a second positioning protrusion 11 that is adapted to the bottom of the sink 4, and a second sealing gasket 12 adapted to the outer wall of the second water-blocking ring 8 is provided below the second positioning protrusion 11.

[0034] In the waterproof external structure of the lithium battery pack shell of this utility model, a power socket 2 and a signal line socket 3 with good waterproof effect are provided. The power socket 2 and the signal line socket 3 can be quickly inserted into the shell 1 through the first positioning hole 5 and the second positioning hole 6, and then sealed by the first sealing gasket 10 and the second sealing gasket 12, which can prevent rainwater and dust from entering the interior of the shell 1. Moreover, a first water-blocking ring 7 and a second water-blocking ring 8 are provided around the first positioning hole 5 and the second positioning hole 6. The first water-blocking ring 7 and the second water-blocking ring 8 play a further blocking role, preventing rainwater and dust entering the settling tank 4 from entering the first positioning hole 5 and the second positioning hole 6, further improving the sealing performance and strengthening the waterproof performance.

[0035] Specifically, refer to Figure 5-9 The power socket 2 has a power terminal 13 in its slot, and the signal line socket 3 has a signal transmission terminal 14 in its slot. The bottom end of the power terminal 13 is connected to the circuit board inside the battery pack through a power-carrying wire, and the bottom end of the signal transmission terminal 14 is connected to the circuit board inside the battery pack through a signal transmission line.

[0036] Specifically, refer to Figure 3-7 The first positioning hole 5 has first screw holes 15 on both sides, and the first positioning protrusion 9 and the first sealing gasket 10 have first connecting holes 16 on both sides corresponding to the first screw holes 15; the first positioning protrusion 9 and the first sealing gasket 10 of the power socket 2 are fixed in the groove 4 by bolts.

[0037] Reference Figure 3-11The second positioning hole 6 has second screw holes 17 on both sides, and the second positioning protrusion 11 and the second sealing gasket 12 have second connecting holes 18 on both sides corresponding to the second screw holes 17; the second positioning protrusion 11 and the second sealing gasket 12 of the signal line socket 3 are fixed in the groove 4 by bolts.

[0038] Specifically, refer to Figure 3-5 The first positioning hole 5 is a triangular socket, and the upper part of the power socket 2 is provided with a triangular positioning part 19 that is adapted to the triangular socket. The slot cross-section of the power socket 2 is triangular.

[0039] Reference Figure 3-4 and Figure 8-9 The second positioning hole 6 is a square socket, and the upper part of the signal line socket 3 is provided with a square positioning part 20 that is adapted to the square socket. The slot in the signal line socket 3 has a square cross-section.

[0040] Specifically, refer to Figure 6-7 The first sealing gasket 10 is connected to a first sealing cover 21 on one side. The bottom surface of the first sealing cover 21 is provided with a first sealing block 22 that is adapted to the slot in the power socket 2. The first sealing block 22 has the function of dustproof and waterproof, and the first sealing block 22 is connected to the first sealing gasket 10 so that it will not fall off or be lost.

[0041] Specifically, refer to Figure 10-11 A second sealing cover 23 is connected to one side of the second sealing gasket 12. The bottom surface of the second sealing cover 23 is provided with a second sealing block 24 that is adapted to the slot in the signal line socket 3. The second sealing block 24 has the functions of dustproofing and waterproofing, and the second sealing block 24 is connected to the second sealing gasket 12, so it will not fall off or be lost.

[0042] Specifically, refer to Figure 8-11 The bottom surface of the second positioning protrusion 11 is provided with a positioning groove 25 surrounding the outer wall of the signal line socket 3. The second sealing gasket 12 has a positioning boss 26 that is adapted to the positioning groove 25. The second sealing gasket 12 and the second positioning protrusion 11 are quickly positioned by the cooperation of the positioning groove 25 and the positioning boss 26. Moreover, the positioning boss 26 is inserted into the positioning groove 25 to further play a waterproof role.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above embodiments only illustrate one or more implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A waterproof external connection structure for a lithium battery pack casing, comprising a casing (1), a power socket (2), and a signal line socket (3), characterized in that, One end of the outer shell (1) is provided with a groove (4), and the two sides of the groove (4) are respectively provided with a first positioning hole (5) and a second positioning hole (6) for installing the power socket (2) and the signal line socket (3). The first positioning hole (5) and the second positioning hole (6) are respectively provided with a first water-blocking ring (7) and a second water-blocking ring (8) protruding from the periphery of the first positioning hole (5) and the second positioning hole (6). The top of the power socket (2) is provided with a first positioning protrusion (9) that is adapted to the bottom of the sink (4), and a first sealing gasket (10) adapted to the outer wall of the first water-blocking ring (7) is provided below the first positioning protrusion (9); the top of the signal line socket (3) is provided with a second positioning protrusion (11) that is adapted to the bottom of the sink (4), and a second sealing gasket (12) adapted to the outer wall of the second water-blocking ring (8) is provided below the second positioning protrusion (11).

2. The waterproof external structure on the lithium battery pack shell according to claim 1, characterized in that, The power socket (2) has a power terminal (13) in its slot, and the signal line socket (3) has a signal transmission terminal (14) in its slot.

3. The waterproofed outer structure on a lithium battery pack housing according to claim 2, wherein, The first positioning hole (5) is provided with first screw holes (15) on both sides, and the first positioning protrusion (9) and the first sealing gasket (10) are provided with first connecting holes (16) corresponding to the first screw holes (15) on both sides. The second positioning hole (6) is provided with second screw holes (17) on both sides, and the second positioning protrusion (11) and the second sealing gasket (12) are provided with second connecting holes (18) corresponding to the second screw holes (17) on both sides.

4. The waterproofed outer structure on a lithium battery pack housing according to claim 3, wherein, The first positioning hole (5) is a triangular socket, and the upper part of the power socket (2) is provided with a triangular positioning part (19) that is adapted to the triangular socket. The slot cross section of the power socket (2) is triangular. The second positioning hole (6) is a square socket. The upper part of the signal line socket (3) is provided with a square positioning part (20) that is adapted to the square socket. The slot in the signal line socket (3) has a square cross section.

5. The waterproofed overlying structure on a lithium battery pack housing of claim 4, wherein, The first sealing gasket (10) is connected to a first sealing cover (21) on one side. The bottom surface of the first sealing cover (21) is provided with a first sealing block (22) that is compatible with the slot in the power socket (2).

6. The waterproofed external structure on a lithium battery pack housing according to any one of claims 1-5, characterized in that, A second sealing cover (23) is connected to one side of the second sealing gasket (12), and a second sealing block (24) is provided on the bottom surface of the second sealing cover (23) to match the slot in the signal line socket (3).

7. The waterproofed outer structure on a lithium battery pack housing according to claim 6, wherein, The bottom surface of the second positioning protrusion (11) surrounds the outer wall of the signal line socket (3) with a positioning groove (25), and the second sealing gasket (12) has a positioning boss (26) that is adapted to the positioning groove (25).

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