Waterproof battery protection circuit board

Abstract

The utility model discloses a waterproof battery protection circuit board. The waterproof battery protection circuit board comprises a bottom shell and an upper cover, a sealing ring is installed in the bottom shell, a protection plate is installed on the sealing ring, a heat conduction plate is installed at the bottom of the bottom shell, and a heat conduction silica gel pad is installed between the heat conduction plate and the protection plate. According to the waterproof battery protection circuit board provided by the utility model, the bottom shell, the upper cover and the sealing ring are arranged, so that the sealing and waterproofing of the protection plate can be realized, the heat conduction plate and the heat conduction silica gel pad are arranged in the bottom shell, and the protection plate is connected with the bottom shell, so that the heat of the protection plate can be conducted to the bottom shell more quickly, and the heat is dissipated more quickly through the bottom shell.

Description

Technical Field

[0001] This utility model relates to the field of battery protection circuit board technology, and in particular to a waterproof battery protection circuit board. Background Technology

[0002] Finished lithium batteries mainly consist of two parts: lithium battery cells and protection boards. The protection board is an integrated circuit board that protects rechargeable batteries (generally referring to lithium batteries). If the lithium battery protection board is accidentally immersed in water during use, the lithium battery cells inside the protection board will become damp. Damp lithium battery cells are prone to short circuits or even become unusable.

[0003] A document with publication number CN209822722U discloses a waterproof battery protection circuit board, including a bottom shell, a top cover, fixing components, a protective plate, a rubber top frame, and an epoxy resin sealing frame. The bottom shell has an installation groove, and the rubber top frame is fixedly installed within the installation groove. The protective plate is movably disposed on top of the rubber top frame. The top cover has a locking groove, and the bottom shell engages with the locking groove. The outer side of the bottom shell is movably connected to the top cover via four fixing components. The epoxy resin sealing frame is fixedly installed within the locking groove, and it is in close contact with the top of the bottom shell, with one end of the epoxy resin sealing frame in close contact with the protective plate. This waterproof battery protection circuit board, through its top cover and bottom shell design, facilitates installation during use and effectively prevents damage from impacts during installation, thus ensuring the normal operation of the protection circuit board and effectively protecting the battery body.

[0004] Although the bottom and top covers of this waterproof battery protection circuit board are made of heat-dissipating materials, the contact area between the protection board and the bottom or top cover is small, and the air has poor thermal conductivity, so heat cannot be transferred quickly. In addition, the lack of air circulation between the inside and outside results in poor heat dissipation of the protection board.

[0005] Therefore, it is necessary to provide a waterproof battery protection circuit board to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a waterproof battery protection circuit board that enables the protection board to dissipate heat faster.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A waterproof battery protection circuit board includes a bottom shell and a top cover. A sealing ring is installed inside the bottom shell, a protection plate is installed on the sealing ring, a copper heat-conducting plate is installed at the bottom of the bottom shell, and a thermally conductive silicone pad is installed between the heat-conducting plate and the protection plate.

[0009] Preferably, the cross-section of the sealing ring is Z-shaped.

[0010] Preferably, the inner side of the sealing ring is provided with an embedding groove.

[0011] Preferably, a receiving groove is provided inside the bottom shell.

[0012] Preferably, the bottom of the bottom shell has a connection hole, and the bottom of the heat-conducting plate is fitted with an integrally formed connecting column.

[0013] Preferably, multiple mounting holes are provided around the bottom shell, and multiple threaded grooves are provided on the top cover.

[0014] Preferably, a heat sink is installed at the bottom of the bottom shell, and there is a gap between the heat sink and the bottom shell.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) By setting a bottom shell, a top cover and a sealing ring, this utility model can achieve the sealing and waterproofing of the protective plate. By installing a heat-conducting plate and a heat-conducting silicone pad inside the bottom shell, the protective plate is connected to the bottom shell, so that the heat of the protective plate can be conducted to the bottom shell more quickly, and the heat can be dissipated more quickly through the bottom shell.

[0017] (2) By providing an embedding groove on the inner side of the sealing ring, the protective plate can be easily fixed inside the sealing ring.

[0018] (3) By setting connecting posts and connecting holes, this utility model can easily connect the heat-conducting plate to the bottom shell;

[0019] (4) By providing mounting holes and threaded grooves, this utility model can easily connect and fix the top cover to the bottom shell;

[0020] (5) By installing a heat dissipation plate at the bottom of the bottom shell, this utility model can accelerate the heat dissipation of the protective plate, improve the heat dissipation effect, and enable the protective plate to cool down faster. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the waterproof battery protection circuit board provided by this utility model;

[0022] Figure 2 for Figure 1 The diagram shows a cross-sectional view of a waterproof battery protection circuit board.

[0023] Figure 3 for Figure 1 A partial cross-sectional view of the sealing ring in the waterproof battery protection circuit board shown.

[0024] Figure 4 for Figure 1A schematic diagram of one embodiment of a waterproof battery protection circuit board is shown.

[0025] Figure 5 for Figure 1 The diagram shows the structure of the heat-conducting plate in the waterproof battery protection circuit board.

[0026] Figure 6 for Figure 1 The diagram shows a cross-sectional view of the bottom shell of the waterproof battery protection circuit board.

[0027] The corresponding names of the attached figures are: 1-bottom shell, 2-top cover, 3-sealing ring, 4-protective plate, 5-heat-conducting plate, 6-heat-conducting silicone pad, 7-embedded groove, 8-connecting post, 9-receiving groove, 10-connecting hole, 11-heat dissipation plate, 12-mounting hole, 13-screw. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0029] Example 1:

[0030] like Figure 1-6 As shown, the waterproof battery protection circuit board provided by this utility model includes: a bottom shell 1 and a top cover 2. A sealing ring 3 is installed inside the bottom shell 1, and a protection plate 4 is installed on the sealing ring 3. A copper heat-conducting plate 5 is installed at the bottom of the bottom shell 1, and a heat-conducting silicone pad 6 is installed between the heat-conducting plate 5 and the protection plate 4. In use, the protection plate 4 for lithium batteries is embedded and installed inside the sealing ring 3, so that the bottom of the protection plate 4 presses tightly against the heat-conducting silicone pad 6. Then, the top cover 2 is fastened onto the bottom shell 1 and secured, pressing the top cover 2 tightly against the sealing ring 3. The sealing ring 3 seals the top cover 2 and the bottom shell 1, sealing the protection plate 4 inside, thus achieving waterproofing of the protection plate 4. The connecting wire of the protection plate 4 is connected to the battery, providing protection for the battery. The protection plate 4 generates heat during use, and the heat at its bottom is transferred to the bottom shell 1 through the heat-conducting silicone pad 6 and the heat-conducting plate 4. The bottom shell 1 exchanges heat with the outside environment, which greatly improves the efficiency compared to air heat conduction, which is conducive to the rapid heat dissipation of the protection plate 4, thereby making its operation more stable.

[0031] By setting the bottom shell 1, the top cover 2 and the sealing ring 3, the protective plate 4 can be sealed and waterproof. By installing the heat-conducting plate 5 and the heat-conducting silicone pad 6 inside the bottom shell 1, the protective plate 4 is connected to the bottom shell 1, so that the heat of the protective plate 4 can be conducted to the bottom shell 1 more quickly, and the heat can be dissipated more quickly through the bottom shell 1.

[0032] Example 2:

[0033] like Figure 3As shown, the cross-section of the sealing ring 3 is Z-shaped, with its top extending outwards and able to rest on the top of the bottom shell 1. The top cover 2 presses the portion of the sealing ring 3 located on the top of the bottom shell 1 tightly onto the bottom shell 1, thereby achieving a seal and waterproofing. The inner side of the sealing ring 3 is provided with an embedding groove 7. The edge of the protective plate 4 is squeezed and inserted into the embedding groove 7, thereby fixing the protective plate 4 to the inner side of the sealing ring 3.

[0034] By providing an embedding groove 7 on the inner side of the sealing ring 3, the protective plate 4 can be easily fixed inside the sealing ring 3.

[0035] Example 3:

[0036] like Figure 4-5 As shown, a receiving groove 9 is provided inside the bottom shell 1, and the bottom of the sealing ring 3 is fitted into the receiving groove 9. A connecting hole 10 is provided at the bottom of the bottom shell 1, and an integrally formed connecting post 8 is installed at the bottom of the heat-conducting plate 5. The connecting post 8 and the connecting hole 10 are sealed and inserted (including sealing measures such as using sealing rings or sealant), thereby connecting and fixing the heat-conducting plate 5 to the bottom shell 1.

[0037] By setting the connecting post 8 and the connecting hole 10, the heat conduction plate 5 can be easily connected to the bottom shell 1.

[0038] Example 4:

[0039] like Figure 4 and Figure 6 As shown, multiple mounting holes 12 are opened around the bottom shell 1, and multiple threaded grooves are also opened on the top cover 2 accordingly. When in use, the screw 13 is passed through the mounting holes 12 and screwed into the threaded grooves to connect and fix the top cover 2 to the bottom shell 1 and press the sealing ring 3.

[0040] By providing mounting holes 12 and threaded grooves, the upper cover 2 can be easily connected and fixed to the bottom shell 1.

[0041] Example 5:

[0042] like Figure 4 As shown, a heat sink 11 is installed at the bottom of the bottom shell 1. There is a 3-5mm gap between the heat sink 11 and the bottom shell 1. The heat sink 11 uses a better material and shape, so that it has a better heat dissipation effect than the bottom shell 1. The heat sink 11 is connected to the connecting post 8. In use, the heat on the heat conduction plate 5 is conducted to the heat sink 11 through the connecting post 8. The heat sink 11, which has a faster heat dissipation speed, dissipates heat. The heat sink 11 works with the bottom shell 1 to dissipate heat, thereby improving the heat dissipation speed of the protection plate 4.

[0043] By installing a heat sink 11 at the bottom of the bottom shell 1, the heat dissipation of the protection plate 4 can be accelerated, the heat dissipation effect can be improved, and the protection plate 4 can cool down faster.

[0044] Working principle: During use, the protection board 4 for the lithium battery is embedded inside the sealing ring 3, so that the bottom of the protection board 4 is tightly pressed against the thermally conductive silicone pad 6. Then, the top cover 2 is fastened onto the bottom shell 1 and secured. The top cover 2 is tightly pressed against the sealing ring 3, and the sealing ring 3 seals the top cover 2 and the bottom shell 1, sealing the protection board 4 inside, thus making the protection board 4 waterproof. The connecting wire of the protection board 4 is connected to the battery, which protects the battery. The protection board 4 generates heat during use, and the heat at its bottom is transferred to the bottom shell 1 through the thermally conductive silicone pad 6 and the thermally conductive plate 4. The bottom shell 1 exchanges heat with the outside environment. Compared with air heat conduction, its efficiency is greatly improved, which is conducive to the rapid heat dissipation of the protection board 4, thus making its operation more stable.

Claims

1. A waterproof battery protection circuit board, characterized in that, include: Bottom shell (1) and top cover (2); A sealing ring (3) is installed inside the bottom shell (1), a protective plate (4) is installed on the sealing ring (3), a heat-conducting plate (5) is installed at the bottom of the bottom shell (1), and a heat-conducting silicone pad (6) is installed between the heat-conducting plate (5) and the protective plate (4).

2. The waterproof battery protection circuit board according to claim 1, characterized in that, The cross-section of the sealing ring (3) is "Z" shaped.

3. The waterproof battery protection circuit board according to claim 1, characterized in that, The inner side of the sealing ring (3) is provided with an embedding groove (7).

4. The waterproof battery protection circuit board according to claim 1, characterized in that, The bottom of the bottom shell (1) is provided with a connection hole (10), and the bottom of the heat-conducting plate (5) is provided with an integrally formed connecting column (8).

5. A waterproof battery protection circuit board according to claim 1, characterized in that, The bottom shell (1) has multiple mounting holes (12) around its perimeter, and the top cover (2) has multiple threaded grooves.

6. A waterproof battery protection circuit board according to claim 1, characterized in that, A heat sink (11) is installed at the bottom of the bottom shell (1).

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