Waterproof lithium battery shell

Abstract

The utility model belongs to the technical field of lithium batteries, and particularly relates to a waterproof lithium battery shell. The device comprises an upper cover and a lower shell, the left side and the right side of the upper cover are provided with handles, the handles are internally and transversely provided with metal inner gaskets, the center of the top of the upper cover is provided with a rectangular hole, the center of the top of the upper cover is provided with a metal frame, and the metal frame is provided with a PC display screen. A display screen cover plate is arranged on the outer side of the PC display screen, a clamping groove is formed in one side of the handle, a copper stud is installed in the clamping groove, and an upper installation groove is formed in the edge of the bottom of the upper cover. The lower shell is a hollow groove body and comprises a lower installation groove corresponding to the upper installation groove at the top edge, and the upper installation groove and the lower installation groove are matched in a nested mode and provided with a compression rubber strip. The secondary injection-molded metal inner gasket is used as a handle keel and is high in bearing capacity and convenient to move; the display screen has a touch screen function and is simple in appearance and convenient to install.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium batteries, in particular to a waterproof lithium battery shell. Background Art

[0002] In recent years, the lithium battery industry has been very popular. It has the advantages of light weight, small size, high unit density, and high current charging and discharging. It is widely used in lighting and automotive industries. At present, there is a good market demand for lead-acid replacement energy storage battery packs. Although there are many lead-acid replacement batteries on the market, their charging cycles are too few, charging is slow, and compatibility is poor. It is difficult to meet their needs for long working hours outside and cannot power electronic equipment under harsh working conditions. Although lead-acid replacement has emerged in the past two years, the quality of various products is uneven. Most products have bulky appearance designs, unscientific structural designs, poor product design versatility, and poor waterproof performance, which are not very suitable for equipment manufacturers.

[0003] At present, when lithium batteries replace lead-acid batteries, various problems will arise in the process of end-users' use due to the different end-user usage environments, and the first problem is waterproofing. The most common lithium battery shells on the market have a maximum waterproof rating of IP65 and do not have display screens or touch screen functions. Utility Model Content

[0004] In view of the above problems, the utility model provides a waterproof lithium battery case, which can achieve the waterproof performance of the lithium battery case reaching level IP67.

[0005] In order to solve the above problems, the utility model provides a waterproof lithium battery shell, characterized in that it includes an upper cover and a lower shell matched therewith; a two-way air permeable valve is arranged in the center of the front side of the upper cover, communication plugs are symmetrically arranged on the upper covers on the left and right sides of the two-way air permeable valve, a communication line sheath is arranged around the communication plug and embedded in the upper shell, handles are arranged on the left and right sides of the upper cover, a metal inner gasket is arranged horizontally in the handle, a metal frame is arranged in the center of the top of the upper cover with a rectangular hole, a PC display screen is arranged on the metal frame, a secondary high display screen cover plate is arranged on the outside of the PC display screen, a card slot is arranged on one side of the handle, a copper stud is installed in the card slot, and an upper mounting groove is arranged at the bottom edge of the upper cover; the lower shell is an internally hollow slot body, including a lower mounting groove corresponding to the upper mounting groove at the top edge, the upper mounting groove and the lower mounting groove are nested and matched, and a compression rubber strip is arranged, and the display screen cover plate, the metal frame, the copper stud, the communication plug, and the metal inner gasket are secondary injection molded in the upper cover.

[0006] A waterproof lithium battery case according to the claim, characterized in that: a fixing hole is provided on the upper side of the lower mounting groove; a through hole is provided around the upper cover, and the fixing hole corresponds to the position of the through hole and is connected by screws.

[0007] According to the waterproof lithium battery shell, the PC display screen is an LCD screen; the display screen cover plate has a size of 138mm*75mm*3mm; the outer size of the metal frame is 136mm*71mm*1mm, and the hollow size is 112mm*53mm*1mm.

[0008] According to the waterproof lithium battery shell, the size of the compressed rubber strip is 1.8*3.1mm, and the cross-sectional area is: 1.8*3.1=5.58mm²; the compression ratio of the compressed rubber strip is: (3.1-2) / 2*100%=55%, and the waterproof grade reaches IP67.

[0009] According to the waterproof lithium battery shell, the size of the upper mounting groove and the lower mounting groove is 1.6*2mm, and the cross-sectional area is: 1.6*2=3.2mm².

[0010] According to the waterproof lithium battery case, the handle size is 8*11*80mm, the handle cross-sectional area is 8*11mm, the length is 80mm, and the metal inner gasket size is: 100mm*9.5mm*1.2mm.

[0011] According to the waterproof lithium battery shell, the upper cover and the lower shell are made of ABS thermoplastic engineering plastic.

[0012] According to the waterproof lithium battery shell, symmetrical positioning holes are arranged at the left and right ends of the metal inner gasket inside the top of the handle, and terminal glue is arranged on the metal inner gasket at the positioning holes.

[0013] Its advantages are: the compression space of the compressed rubber strip is completely sufficient, the compression ratio of the compressed rubber strip of this device is: (3.1-2) / 2*100%=55%, the compression ratio of the compressed rubber strip of this device is 55%>30% (the compression ratio of the compressed rubber strip is 15--30%), it has a good sealing effect, and the waterproof level meets IP67; the secondary injection-molded metal inner gasket is used as the handle keel, with stable performance, strong load-bearing capacity, and easy to move;

[0014] The upper cover and lower shell are fixed with M4 bolts and caps. The display screen has a touch screen function. It has a simple and technological appearance and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the upper cover structure of the utility model.

[0018] Figure numerals: 1. upper cover, 2. lower shell, 3. two-way air valve, 4. communication plug, 5. communication line sheath, 6. handle, 7. metal inner gasket, 8. metal frame, 9. display screen cover, 10. card slot, 11. copper stud, 12. through hole, 13. upper mounting slot, 14. lower mounting slot, 15. fixing hole, 16. compression rubber strip, 17. M4 bolt, 18. cover cap. DETAILED DESCRIPTION

[0019] The preferred examples of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred examples described herein are only used to illustrate and explain the present invention, and do not limit the present invention.

[0020] It should be noted that the directions or positional relationships indicated by terms such as “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0021] Figures 1 to 3 An implementation mode of the utility model is shown.

[0022] like Figure 1 A waterproof lithium battery case is shown, comprising an upper cover 1 and a matching lower shell 2, wherein the upper cover 1 and the lower shell 2 are made of ABS thermoplastic engineering plastic.

[0023] like Figure 1 In the figure, the upper cover 1 includes a two-way air-permeable valve 3 arranged in the center of the front side, and a communication plug 4 is symmetrically arranged on the upper cover 1 on the left and right sides of the two-way air-permeable valve 3. A communication line sheath 5 is arranged outside the communication plug 4, and the communication line sheath 5 covers the communication plug 4 to protect and waterproof. Handles 6 are arranged on the left and right sides of the upper cover 1, and a metal inner gasket 7 is arranged horizontally inside the handle 6. A metal frame 8 is arranged in the center of the top of the upper cover 1, and a display screen is arranged inside the metal frame 8. A display screen cover plate 9 is arranged on the outside. The PC display screen cover plate 9 and the upper cover 1 made of ABS material are two materials with different properties. The addition of the metal frame 8 prevents bulging, deformation, and material shortage during the secondary injection molding process. The display screen cover plate 9 has a built-in transparent PC display screen to meet the brightness and touch effect of the display screen. A card slot 10 is arranged in the middle of the upper cover 1 on the left and right sides of the metal frame 8, and a copper stud 11 is secondary-injected on the card slot 10. The bottom of the card slot 10 is sealed inside, which has a high waterproof effect. Multiple through holes 12 are evenly distributed around the top perimeter of the upper cover 1, and an upper mounting groove 13 is arranged at the bottom edge of the upper cover 1.

[0024] In this housing, the PC display screen cover plate 1, the metal frame 2, the copper studs 6, the communication plug 11, and the metal inner gasket 7 are secondary injection-molded in the upper cover 5.

[0025] Symmetrical positioning holes are set at the left and right ends of the metal inner gasket 7 on the inner side of the top of the handle 6, and terminal glue is set on the metal inner gasket 7 at the positioning holes. Because the metal inner gasket 7 needs to be constrained and positioned up, down, left and right, two positioning holes are opened on the appearance surface under the conditions of meeting the requirements of air tightness, waterproofness and aesthetics. The terminal glue can be used to cover it after the product is formed in the later stage.

[0026] The two-way air valve 3 can avoid the appearance deformation of the product caused by changes in temperature and air pressure, and can achieve the purpose of air permeability and waterproofing.

[0027] The lower shell 2 of the device is a hollow groove body, including a lower mounting groove 14 corresponding to the upper mounting groove 13 at the top edge, a plurality of fixing holes 15 corresponding to the through holes 12 are arranged on the inner side of the lower shell 2, and a compression rubber strip 16 is arranged between the upper mounting groove 13 and the lower mounting groove 14. By utilizing the interference fit between the upper mounting groove 13 and the lower mounting groove 14 and the compression rubber strip 16, and utilizing the compression amount of the compression rubber strip 16, the compression ratio of the compression rubber strip 16 of the device is: (3.1-2) / 2*100%=55%, and the compression ratio of the compression rubber strip 16 of the device is 55%>30% (the compression ratio of the compression rubber strip 16 is 15--30%), and the matching gap between the ABS upper cover 1 and the lower shell 2 is completely filled to achieve its sealing effect, and the waterproof level reaches IP67.

[0028] The through hole 12 and the fixing hole 15 are fixedly connected by a connecting piece, and the connecting piece is 8 groups of M4 bolts 17 and a cap 18 arranged on the top thereof, which is easy to install and has high waterproof performance.

[0029] The PC display screen is an LCD screen; the display screen cover plate 9 has a size of 138mm*75mm*3mm; the outer size of the metal frame 8 is 136mm*71mm*1mm, and the hollow size is 112mm*53mm*1mm. The size of the compressed rubber strip 16 is 1.8*3.1mm, and the cross-sectional area is 1.8*3.1=5.58mm²; the size of the upper mounting groove 13 and the lower mounting groove 14 is 1.6*2mm, and the cross-sectional area is 1.6*2=3.2mm². The size of the handle 6 is 8*11*80mm, and the cross-sectional area of ​​the handle 6 is 8*11mm, and the length is 80mm; the size of the metal inner gasket 7 is 100mm*9.5mm*1.2mm.

[0030] In this device, the overall mass of the product is heavier when used with a lithium battery, reaching more than 15 kg. The keel design of the handle 6 and the metal inner gasket 7 facilitates the handling and carrying of the product.

[0031] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned implementation cases, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof lithium battery case, characterized in that: The invention comprises an upper cover (1) and a lower shell (2) matched therewith; a two-way air-permeable valve (3) is arranged at the center of the front side of the upper cover (1); communication plugs (4) are symmetrically arranged on the upper cover (1) on the left and right sides of the two-way air-permeable valve (3); a communication line sheath (5) is arranged around the communication plug (4) and embedded in the upper shell; handles (6) are arranged on the left and right sides of the upper cover (1); a metal inner gasket (7) is arranged transversely inside the handle (6); a rectangular hole is opened in the center of the top of the upper cover (1) to arrange a metal frame (8); a PC display screen is arranged on the metal frame (8); a secondary high display screen cover plate (9) is arranged outside the PC display screen; a card slot (10) is arranged on one side of the handle (6); a copper stud (11) is installed in the card slot (10); and an upper mounting slot (13) is arranged at the bottom edge of the upper cover (1); The lower shell (2) is a hollow groove body, including a lower mounting groove (14) at the top edge corresponding to the upper mounting groove (13), the upper mounting groove (13) and the lower mounting groove (14) are nested and matched, and a compression rubber strip is provided. The display screen cover plate (9), the metal frame (8), the copper stud (11), the communication plug (4), and the metal inner gasket (7) are secondary injection-molded in the upper cover (1).

2. A waterproof lithium battery case according to claim 1, characterized in that: A fixing hole (15) is provided on the upper side of the lower mounting groove (14); a through hole is provided around the upper cover, and the fixing hole corresponds to the position of the through hole and is connected by screws.

3. A waterproof lithium battery case according to claim 1, characterized in that: The PC display screen is an LCD screen; the display screen cover (9) has a size of 138 mm*75 mm*3 mm; the outer size of the metal frame (8) is 136 mm*71 mm*1 mm, and the hollow size is 112 mm*53 mm*1 mm.

4. A waterproof lithium battery case according to claim 1, characterized in that: The size of the compressed rubber strip (16) is 1.8*3.1 mm, and the cross-sectional area is: 1.8*3.1=5.58 mm²; the compression ratio of the compressed rubber strip (16) is: (3.1-2) / 2*100%=55%, and the waterproof grade reaches IP67.

5. The waterproof lithium battery case according to claim 1, characterized in that: The size of the upper mounting groove (13) and the lower mounting groove (14) is 1.6*2 mm, and the cross-sectional area is: 1.6*2=3.2 mm².

6. The waterproof lithium battery case according to claim 1, characterized in that: The handle (6) has a size of 8*11*80 mm, a cross-sectional area of ​​8*11 mm, and a length of 80 mm. The metal inner gasket (7) has a size of 100 mm*9.5 mm*1.2 mm.

7. The waterproof lithium battery case according to claim 1, characterized in that: The upper cover (1) and the lower shell (2) are made of ABS thermoplastic engineering plastic.

8. The waterproof lithium battery case according to claim 1, characterized in that: Symmetrical positioning holes are arranged at the left and right ends of the metal inner gasket (7) on the inner side of the top of the handle (6), and terminal glue is arranged on the metal inner gasket (7) at the positioning holes.

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