Waterproof battery protection board

Abstract

The utility model provides a waterproof type battery protection plate, relates to battery protection plate technical field, waterproof type battery protection plate includes protection box, water guide frame and battery protection plate body, the inside of protection box is movably provided with battery protection plate body, the top wall of protection box's inner cavity is provided with four second heat dissipation opening, the positions, corresponding to the four second heat dissipation openings, of the lower surface of the top wall of an inner cavity of the protection box are fixedly connected with sheet-shaped waterproof breathable films correspondingly, four first heat dissipation openings are formed in the protection plate, the water guide frame is fixedly connected to the top of the protection box, and the positions under the four first heat dissipation openings correspond to the inclined faces of the water guide frame correspondingly. The top of the water guide frame is fixedly connected with a frame-shaped waterproof breathable film, the top of the frame-shaped waterproof breathable film is fixedly connected with the bottom of the protection plate, and according to the waterproof battery protection plate provided by the utility model, when water enters from the first heat dissipation opening, the water can fall onto the inclined surface of the water guide frame under the action of gravity, so that the water cannot be in contact with the second heat dissipation opening.

Description

Technical Field

[0001] The utility model relates to the technical field of battery protection plates, in particular to a waterproof battery protection plate. Background Art

[0002] Because the material of lithium batteries determines that they cannot be overcharged, over-discharged, over-current, short-circuited, or charged and discharged at ultra-high temperatures, lithium batteries always have protection boards with sampling resistors and current fuses.

[0003] The utility model with the announcement number CN218244097U discloses a battery protection board with a waterproof structure. The battery protection board with a waterproof structure provided by the utility model is configured such that one end of the dust plug is inserted into the through groove of the cover plate, and the two sides of the sealing ring are respectively attached to the circuit interface and one side of the cover plate, so that the through groove of the cover plate is sealed and connected with the cavity in the protection box. Two sets of waterproof and breathable membranes are respectively fixedly installed on the top of the cavity of the protection box by bolts. The two sets of waterproof and breathable membranes are respectively arranged corresponding to the heat dissipation ports on the upper surface of the protection box. By arranging the waterproof and breathable membranes, The heat in the protection box is dissipated in time, and a heat sink is provided on the lower surface of the battery protection board body. The heat sink and the integrated block are respectively inserted and welded to the battery protection board through copper pins. The heat sink adopts a copper block with good heat dissipation to improve the heat dissipation effect of the battery protection board body. A heat dissipation port is opened on the top of the protection box in the utility model, and waterproofing is achieved by a waterproof and breathable membrane arranged on the bottom of the heat dissipation port on the protection box. Since the heat dissipation port in the device is opened at the top and waterproofing is achieved only by a layer of waterproof and breathable membrane, there is a problem of poor waterproofing effect.

[0004] Therefore, it is necessary to provide a new waterproof battery protection board to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a waterproof battery protection board.

[0006] The utility model provides a waterproof battery protection plate, comprising a protection box, a water guide frame and a battery protection plate body, wherein the battery protection plate body is movably arranged inside the protection box, one end of the protection box is detachably connected to a cover plate by bolts, four second heat dissipation openings distributed in an annular shape and at equal distances are opened on the inner cavity top wall of the protection box, a sheet-shaped waterproof and breathable membrane is fixedly connected to the positions corresponding to the four second heat dissipation openings on the lower surface of the inner cavity top wall of the protection box, four corners of the top of the protection box are fixedly connected to supporting feet, the tops of the four supporting feet are commonly connected to a protective plate, and the protective plate Four first heat dissipation openings are evenly distributed in a ring shape. When the four first heat dissipation openings and the four second heat dissipation openings are projected on the same horizontal plane, the four first heat dissipation openings are respectively located on one side of the four second heat dissipation openings away from the center of the projection pattern. The water guide frame is fixedly connected to the top of the protection box. The forward and lateral cross-sections of the water guide frame are both isosceles trapezoids. The inclined surfaces of the water guide frame correspond to the bottoms of the four first heat dissipation openings. A frame-shaped waterproof and breathable membrane is fixedly connected to the top of the water guide frame. The top of the frame-shaped waterproof and breathable membrane is fixedly connected to the bottom of the protective plate.

[0007] Preferably, the protective plate and the four supporting legs are an integrated structure.

[0008] Preferably, a plurality of electronic components are welded on the top of the battery protection board body, and a circuit interface is welded on one end of the battery protection board body close to the cover plate.

[0009] Preferably, a through groove corresponding to the circuit interface is formed on the cover plate, and a dustproof piece is provided at the through groove of the cover plate, and a waterproof silicone pad is fixedly connected to the side wall of the cover plate.

[0010] Preferably, the dustproof part includes a dustproof plug and a silicone belt, one end of the dustproof plug is inserted into the through groove of the cover plate, and one end of the silicone belt is fixedly connected to the side wall of the dustproof plug.

[0011] Preferably, a heat sink is provided below the battery protection board body, one end of the heat sink is connected to a plurality of copper pins, and the tops of the copper pins are welded to the bottom of the battery protection board body.

[0012] Compared with the related art, the waterproof battery protection board provided by the utility model has the following beneficial effects:

[0013] When the device is in use, if external water enters from the first heat dissipation port, the water entering from the first heat dissipation port will fall onto the inclined surface of the water guide frame under the action of gravity. Under the action of the water guide frame, the water droplets gradually move downward along the inclined surface of the water guide frame, so as not to contact the second heat dissipation port. In addition, since the forward cross section and the lateral cross section of the water guide frame are both isosceles trapezoidal, it is not easy for external water to directly contact the second heat dissipation port along the water guide frame, thereby achieving a good waterproof effect. In addition, the waterproof breathable film of the sheet and the frame are further enhanced by the provision of the waterproof breathable film. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the waterproof battery protection board provided by the utility model;

[0015] Figure 2 for Figure 1 The protection box, the battery protection board body and the exploded view of the battery protection board body shown;

[0016] Figure 3 for Figure 1 The structural schematic diagram of the protective plate and the protective box shown;

[0017] Figure 4 for Figure 3 A cross-sectional view of the water guide frame shown in the front direction;

[0018] Figure 5 for Figure 3 A projection diagram of the four first heat dissipation openings and the four second heat dissipation openings shown;

[0019] Figure 6 for Figure 1 The schematic diagram of the structure of the top of the inner cavity of the protection box shown;

[0020] Figure 7 for Figure 2 The exploded view of the battery protection board body and heat sink is shown.

[0021] Numbers in the figure: 1. Protection box; 2. Cover plate; 3. Battery protection board body; 4. Second heat dissipation port; 5. Sheet-shaped waterproof and breathable membrane; 6. Support foot; 7. Protective plate; 8. First heat dissipation port; 9. Water guide frame; 10. Frame-shaped waterproof and breathable membrane; 11. Electronic components; 12. Circuit interface; 13. Heat sink; 14. Copper pin; 15. Dust plug; 16. Silicone tape. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] Please refer to Figure 1-Figure 7 ,in, Figure 1This is a schematic diagram of the structure of the waterproof battery protection board provided by the utility model; Figure 2 for Figure 1 The protection box, the battery protection board body and the exploded view of the battery protection board body shown; Figure 3 for Figure 1 The structural schematic diagram of the protective plate and the protective box shown; Figure 4 for Figure 3 A cross-sectional view of the water guide frame shown in the front direction; Figure 5 for Figure 3 A projection diagram of the four first heat dissipation openings and the four second heat dissipation openings shown; Figure 6 for Figure 1 The schematic diagram of the structure of the top of the inner cavity of the protection box shown; Figure 7 for Figure 2 The exploded view of the battery protection board body and the heat sink shown. It includes: a protection box, a water guide frame and a battery protection board body.

[0024] In the specific implementation process, Figure 1-Figure 7 As shown, a battery protection board body 3 is movably provided on the inner side of the protection box 1, a cover plate 2 is detachably connected to one end of the protection box 1 by bolts, four second heat dissipation ports 4 which are distributed in a ring shape and at equal distances are provided on the inner cavity top wall of the protection box 1, a sheet-like waterproof and breathable membrane 5 is fixedly connected to the positions corresponding to the four second heat dissipation ports 4 on the lower surface of the inner cavity top wall of the protection box 1, four corners of the top of the protection box 1 are fixedly connected with supporting feet 6, the tops of the four supporting feet 6 are commonly connected with a protective plate 7, the protective plate 7 and the four supporting feet 6 are an integrated structure, four first heat dissipation ports 8 which are evenly distributed in a ring shape are provided on the protective plate 7, when the four first heat dissipation ports 8 and the four second heat dissipation ports 4 are projected on the same horizontal plane, the four first heat dissipation ports 8 are respectively located on the side of the four second heat dissipation ports 4 away from the center of the projection pattern, a water guide frame 9 is fixedly connected to the top of the protection box 1, and the water guide frame 9 is directly connected to the top of the protection box 1. The cross-section in the forward direction and the cross-section in the lateral direction are both isosceles trapezoidal, and the inclined surface of the water guide frame 9 corresponds to the bottom of the four first heat dissipation ports 8. The top of the water guide frame 9 is fixedly connected with a frame-shaped waterproof and breathable membrane 10, and the top of the frame-shaped waterproof and breathable membrane 10 is fixedly connected to the bottom of the protective plate 7. If external water enters from the first heat dissipation port 8, the water entering from the first heat dissipation port 8 will fall onto the inclined surface of the water guide frame 9 under the action of gravity. Under the action of the water guide frame 9, the water droplets gradually move downward along the inclined surface of the water guide frame 9, so as not to contact the second heat dissipation port 4. In addition, since the cross-section in the forward direction and the cross-section in the lateral direction of the water guide frame 9 are both isosceles trapezoidal, it is not easy for external water to directly contact the second heat dissipation port 4 along the water guide frame 9, thereby achieving a good waterproof effect. In addition, the waterproof and breathable membrane 5 and the frame-shaped waterproof and breathable membrane 10 are provided to further enhance the waterproof effect of the device.

[0025] A plurality of electronic components 11 are welded on the top of the battery protection board body 3, and a circuit interface 12 is welded on one end of the battery protection board body 3 close to the cover plate 2. A through groove corresponding to the circuit interface 12 is opened on the cover plate 2, and a dustproof part is arranged at the through groove of the cover plate 2. A waterproof silicone pad is fixedly connected to the side wall of the cover plate 2. The dustproof part includes a dust plug 15 and a silicone belt 16. One end of the dust plug 15 is inserted into the through groove of the cover plate 2, and one end of the silicone belt 16 is fixedly connected to the side wall of the dust plug 15.

[0026] A heat sink 13 is provided below the battery protection board body 3, and a plurality of copper pins 14 are connected to one end of the heat sink 13. The top of the copper pins 14 is welded to the bottom of the battery protection board body. The heat sink 13 at this time can refer to the structure of a heat sink 13 in a battery protection board with a waterproof structure with announcement number CN218244097U.

[0027] The working principle provided by the utility model is as follows: when the device is in use, if external water enters from the first heat dissipation port 8, the water entering from the first heat dissipation port 8 will fall onto the inclined surface of the water guide frame 9 under the action of gravity. Under the action of the water guide frame 9, the water droplets gradually move downward along the inclined surface of the water guide frame 9, so as not to contact the second heat dissipation port 4. In addition, since the positive cross-section and the lateral cross-section of the water guide frame 9 are both isosceles trapezoidal, it is not easy for external water to directly contact the second heat dissipation port 4 along the water guide frame 9, thereby achieving a good waterproof effect. In addition, the waterproof breathable membrane 5 and the frame-shaped waterproof breathable membrane 10 are provided to further enhance the waterproof effect of the device.

[0028] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A waterproof battery protection board, characterized in that: The invention comprises a protection box (1), a water guide frame (9) and a battery protection board body (3), wherein the battery protection board body (3) is movably arranged inside the protection box (1), one end of the protection box (1) is detachably connected to a cover plate (2) by bolts, the inner cavity top wall of the protection box (1) is provided with four second heat dissipation openings (4) distributed in an annular shape and at equal distances, the lower surface of the inner cavity top wall of the protection box (1) is fixedly connected to the positions corresponding to the four second heat dissipation openings (4) with a sheet-like waterproof and breathable membrane (5), the top four corners of the protection box (1) are fixedly connected with supporting feet (6), the tops of the four supporting feet (6) are commonly connected to a protection plate (7), and the protection plate (7) is provided with Four first heat dissipation openings (8) are evenly distributed in an annular shape. When the four first heat dissipation openings (8) and the four second heat dissipation openings (4) are projected on the same horizontal plane, the four first heat dissipation openings (8) are respectively located on one side of the four second heat dissipation openings (4) away from the center of the projection pattern. The water guide frame (9) is fixedly connected to the top of the protection box (1). The front and lateral cross sections of the water guide frame (9) are both isosceles trapezoidal. The inclined surface of the water guide frame (9) corresponds to the bottom of the four first heat dissipation openings (8). The top of the water guide frame (9) is fixedly connected to a frame-shaped waterproof and breathable membrane (10). The top of the frame-shaped waterproof and breathable membrane (10) is fixedly connected to the bottom of the protective plate (7).

2. The waterproof battery protection board according to claim 1, characterized in that: The protective plate (7) and the four supporting legs (6) are an integrated structure.

3. The waterproof battery protection board according to claim 2, characterized in that: A plurality of electronic components (11) are welded to the top of the battery protection board body (3), and a circuit interface (12) is welded to one end of the battery protection board body (3) close to the cover plate (2).

4. The waterproof battery protection board according to claim 3, characterized in that: The cover plate (2) is provided with a through slot corresponding to the circuit interface (12), and a dustproof piece is provided at the through slot of the cover plate (2), and a waterproof silicone pad is fixedly connected to the side wall of the cover plate (2).

5. The waterproof battery protection board according to claim 4, characterized in that: The dustproof part comprises a dustproof plug (15) and a silicone belt (16), one end of the dustproof plug (15) is inserted into the through groove of the cover plate (2), and one end of the silicone belt (16) is fixedly connected to the side wall of the dustproof plug (15).

6. The waterproof battery protection board according to claim 5, characterized in that: A heat sink (13) is provided below the battery protection board body (3); one end of the heat sink (13) is connected to a plurality of copper pins (14); the tops of the copper pins (14) are welded to the bottom of the battery protection board body.

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