A protective lithium battery protection plate

Abstract

The utility model relates to battery protection plate technical field, and disclose a kind of protective lithium battery protection plate, including cross plate, the four corners of cross plate are all fixedly connected with hollow column, the four corners of cross plate are all fixedly connected with arc seat, the core component is movably connected in the hollow column, four the side of the hollow column away from cross plate is all fixedly connected with U-shaped frame, the inner wall of arc seat movably connected with top component, by setting top component, while providing rigid protection for core component, the combination of its heat plate and radiating fin can rapidly guide the heat generated by internal components to external environment, in addition, by the cooperation of disc spring and bolt, while fastening, it provides sustained, stable compression force between each component, effectively reduces interface thermal resistance, ensures the efficient and unobstructed of heat conduction path, thereby avoid the over-temperature risk caused by poor heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of battery protection board technology, specifically a protective lithium battery protection board. Background Technology

[0002] As the name suggests, a battery protection board is an integrated circuit board that is mainly used to protect rechargeable batteries. Because the materials of lithium batteries themselves determine that they cannot be overcharged, over-discharged, overcurrented, short-circuited, or charged and discharged at excessively high temperatures, lithium battery components are always accompanied by a protection board with a sampling resistor and a current fuse.

[0003] Patent application CN202420447184.5 discloses a protective lithium battery protection board, comprising a lithium battery protection board with protective sleeves inserted at its four corners. The protective sleeves have internal cavities, and vertical and horizontal springs are fixedly installed on the inner walls of these cavities. The advantages of this invention are: through the cooperation of the lithium battery protection board, protective sleeves, air, vertical springs, horizontal springs, a first elastic ball, and a second spring ball, it can provide comprehensive protection for both sides of the four corners of the lithium battery protection board. This provides better and more comprehensive protection against impacts, preventing damage to the lithium battery protection board. The cooperation between slots, mounting plates, bolts, and threaded holes facilitates the insertion and fixing of the protective sleeves at the four corners of the lithium battery protection board, making installation and removal simple and convenient.

[0004] Existing protection solutions mostly adopt a closed-loop structure, but the sealed structure hinders the heat dissipation of internal components, which can easily lead to overheating risks. Secondly, it lacks effective protection for external circuits, and the cable interfaces are prone to loosening or even falling off when subjected to vibration or impact. A single physical wrapping is difficult to balance protection, heat dissipation and interface reliability, which is not conducive to improving the overall safety and stability of the battery. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a protective lithium battery protection board to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a protective lithium battery protection board, comprising a cross plate, hollow columns fixedly connected to the four corners of the cross plate, arc-shaped seats fixedly connected to the four corners of the cross plate, a core component movably connected to the hollow columns, a U-shaped frame fixedly connected to the side of each of the four hollow columns away from the cross plate, and a top component movably connected to the inner wall of the arc-shaped seats. The core components include: The circuit board has positioning holes at each of its four corners, with the inner walls of these holes movably connected to hollow columns. Protective strips are fixedly connected to each of the four corners of the circuit board, and a wiring board is fixedly connected to the bottom of the circuit board. Buffer plates are installed on the inner walls of the four positioning holes to cushion collisions between the circuit board and the hollow columns. An arc-shaped base forms a rigid support frame around the circuit board and at its top, preventing deformation. Simultaneously, a U-shaped frame on the outer side maintains a certain distance from the core components, creating a buffer zone. When the equipment experiences a severe impact, the U-shaped frame will deform first to absorb and dissipate the impact energy, preventing the impact force from being directly transmitted to the core circuit board, thus protecting the internal core components.

[0007] According to the above technical solution, each of the four arc-shaped seats is fixedly connected to a first fixing strip, and each of the four first fixing strips is fixedly connected to a second fixing strip at its bottom. Multiple notches are provided between the first and second fixing strips, the number of which is the same as the number of interfaces on the terminal block. By setting the first and second fixing strips, the connected cables are effectively fixed. When the device is bumped or vibrated, the fixed cables will form an integral part with the circuit board, thereby eliminating the relative displacement and stress concentration caused by the asynchronous inertia between the cables and the interfaces. This design transfers the potential risk from the electrical interface to the cable body, avoiding loosening or detachment of the lines due to external forces.

[0008] According to the above technical solution, the top component includes a substrate, with heat dissipation fins fixedly connected to the top of the substrate and a heat spreader fixedly connected to the bottom of the substrate. The bottom of the heat spreader contacts the heat-generating components on the circuit board through a thermally conductive silicone pad, transferring heat from the heat spreader to the substrate for heat dissipation. By setting the top component, while providing rigid protection for the core components, the combination of its heat spreader and heat dissipation fins can quickly conduct the heat generated by the internal components to the external environment. In addition, through the cooperation of disc-shaped springs and bolts, continuous and stable clamping force is provided between the components while tightening, effectively reducing the interface thermal resistance and ensuring the efficiency and smooth flow of the heat conduction path, thereby avoiding the risk of overheating due to poor heat dissipation.

[0009] According to the above technical solution, the outer wall arc-shaped seat of the substrate is movably connected, and the inner walls of the four corners of the substrate are movably connected with sliding rings. The bottom of the sliding ring is fixedly connected with a disc-shaped spring. The bottom of the disc-shaped spring is fixedly connected to the substrate. The inner wall of the sliding ring is rotatably connected with a bolt through a bearing. The bolt passes through the substrate and extends to the bottom of the substrate. The inner wall of the hollow column is threadedly connected to the bolt. The top component is fixed to the top of the core component by rotating the bolt.

[0010] According to the above technical solution, a second buffer pad is fixedly connected to each of the four corners of the bottom of the substrate, and a first buffer pad is fixedly connected to the outer wall of each of the four hollow columns. The bottom of the four first buffer pads is fixedly connected to the arc-shaped seat. The first buffer pad and the second buffer pad support the core component in the middle for a certain buffering.

[0011] According to the above technical solution, a support bar is fixedly connected to the top of the cross plate. There are four support bars, and the tops of the four support bars are attached to the circuit board. The support bars are used to support the bottom of the circuit board. By setting the cross plate, its cross-shaped structure itself has high bending and torsional stiffness, which can provide a stable bottom support for the circuit board above, effectively suppress deformation, and enhance structural reliability. At the same time, compared with a solid base plate, this structure reduces the contact area with the circuit board, forming a natural ventilation and heat dissipation channel, which is conducive to the heat dissipation from the bottom to the surroundings and enhances the overall heat dissipation effect of the equipment.

[0012] Compared with the prior art, this utility model provides a protective lithium battery protection board with the following advantages: 1. By setting a top component, this utility model provides rigid protection for the core components, while the combination of its heat dissipation plate and heat sink fins can quickly conduct the heat generated by the internal components to the external environment. In addition, the cooperation of disc-shaped springs and bolts provides continuous and stable clamping force between the components while tightening them, effectively reducing the interface thermal resistance and ensuring the efficiency and smooth flow of heat conduction path, thereby avoiding the risk of overheating due to poor heat dissipation.

[0013] 2. This utility model effectively fixes the connected cable by setting a first fixing strip and a second fixing strip. When the equipment is bumped or vibrated, the fixed cable will form an integral part with the circuit board, thereby eliminating the relative displacement and stress concentration caused by the asynchronous inertia between the cable and the interface. This design transfers the potential risk from the electrical interface to the cable body, avoiding the loosening or detachment of the line due to external force.

[0014] 3. This utility model forms a rigid support frame around the circuit board and on the top by setting an arc-shaped base, thereby preventing the board from deforming. At the same time, the U-shaped frame set on the outside maintains a certain distance from the core components, creating a buffer area. When the equipment is subjected to a severe impact, the U-shaped frame will deform first to absorb and dissipate the impact energy, avoiding the impact force from being directly transmitted to the core circuit board, thus achieving the protection of the internal core components.

[0015] 4. By setting a cross plate, the cross-shaped structure of this utility model has high bending and torsional stiffness, which can provide a stable bottom support for the circuit board above, effectively suppress deformation, and enhance structural reliability. At the same time, compared with a solid bottom plate, this structure reduces the contact area with the circuit board, forming a natural ventilation and heat dissipation channel, which is conducive to the heat dissipation of the bottom to the surroundings and enhances the overall heat dissipation effect of the equipment. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the core components of this utility model; Figure 5 This is a schematic diagram of the top component of this utility model; Figure 6 This is a cross-sectional view of the top component of this utility model; Figure 7 This utility model Figure 6 A magnified view of A in the middle.

[0017] In the diagram: 1. Cross plate; 101. Support bar; 102. Arc-shaped seat; 103. Hollow column; 104. First buffer pad; 105. U-shaped frame; 106. First fixing bar; 107. Second fixing bar; 2. Core component; 201. Circuit board; 202. Positioning hole; 203. Protective bar; 204. Wiring board; 3. Top component; 301. Base plate; 302. Heat dissipation fins; 303. Heat spreader; 304. Sliding ring; 305. Bolt; 306. Disc-shaped spring; 307. Second buffer pad. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Example 1: See Figures 1-4 This utility model provides a technical solution: a protective lithium battery protection board, including a cross plate 1, with hollow columns 103 fixedly connected to each of the four corners of the cross plate 1. The cross plate 1 is characterized by having arc-shaped seats 102 fixedly connected to each of the four corners. A core component 2 is movably connected to each of the hollow columns 103. A U-shaped frame 105 is fixedly connected to each of the four hollow columns 103 on the side away from the cross plate 1. The fixing point of the outermost U-shaped frame 105 maintains a certain distance from the core component 2, forming a preset buffer area. When the device encounters a severe side impact, the U-shaped frame 105 will act as a priority force-bearing and energy-absorbing component, absorbing and dissipating most of the impact energy through its own deformation, effectively preventing the impact force from being directly transmitted to the core circuit board 201. A top component 3 is movably connected to the inner wall of the arc-shaped seats 102, and the outer surfaces of the four arc-shaped seats 102 are fixedly connected to the core circuit board 201. A first fixing strip 106 is fixedly connected to the bottom of each of the four first fixing strips 106, and a second fixing strip 107 is fixedly connected to the bottom of each of the four first fixing strips 106. Multiple notches are provided between the first fixing strips 106 and the second fixing strips 107, and the number of notches is the same as the number of interfaces on the terminal block 204. After the external cable is connected to the terminal block 204, it is constrained in the notches formed by the first fixing strips 106 and the second fixing strips 107. When the device is subjected to external impact or vibration, the fixed cable, the circuit board 201 and the terminal block 204 move synchronously as a whole, which reduces the risk of the cable loosening or falling off and ensures the reliability of the electrical connection. A support strip 101 is fixedly connected to the top of the cross plate 1. There are four support strips 101, and the top of the four support strips 101 is attached to the circuit board 201. The support strips 101 are used to support the bottom of the circuit board 201.

[0022] The core component 2 includes: a circuit board 201, with positioning holes 202 at each of the four corners of the circuit board 201. The inner walls of the positioning holes 202 are movably connected to the hollow column 103. Protective strips 203 are fixedly connected to each of the four corners of the circuit board 201. A wiring board 204 is fixedly connected to the bottom of the circuit board 201. Buffer plates are provided on the inner walls of the four positioning holes 202. The circuit board 201 is aligned and installed with the hollow column 103 on the cross plate 1 through the positioning holes 202 at its four corners. The buffer plates on the inner walls of the positioning holes 202 can effectively buffer minor collisions and vibrations between the circuit board 201 and the hollow column 103. At the same time, the bottom of the circuit board 201 is stably supported by the support strips 101 on the cross plate 1. Its cross-shaped structure gives the entire base extremely high bending and torsional rigidity, which can effectively prevent the circuit board 201 from deforming.

[0023] Example 2: Please refer to Figures 5-7Based on Embodiment 1, this utility model provides a technical solution: the top component 3 includes a substrate 301, a heat dissipation fin 302 fixedly connected to the top of the substrate 301, and a heat spreader 303 fixedly connected to the bottom of the substrate 301. The bottom of the heat spreader 303 contacts the heat-generating components on the circuit board 201 via a thermally conductive silicone sheet. When the device is working, the heat generated by the components on the circuit board 201 is transferred to the heat spreader 303 via the thermally conductive silicone sheet. The heat spreader 303 then diffuses the heat laterally through the top... A large area of ​​heat dissipation fins 302 convects with the air, dissipating heat to the external environment. The outer wall of the substrate 301 is movably connected to an arc-shaped seat 102. Sliding rings 304 are movably connected to the inner walls of each of the four corners of the substrate 301. A disc-shaped spring 306 is fixedly connected to the bottom of each sliding ring 304, and the bottom of the disc-shaped spring 306 is fixedly connected to the substrate 301. Bolts 305 are rotatably connected to the inner wall of the sliding rings 304 via bearings. The bolts 305 penetrate the substrate 301 and extend to the bottom of the substrate 301. Hollow column 1... The inner wall of 03 is threadedly connected to bolt 305. During equipment installation, bolt 305 is screwed downwards into the thread of hollow column 103, simultaneously causing sliding ring 304 to slide in the inner hole of base plate 301, thereby compressing the bottom disc spring 306. After being compressed, disc spring 306 generates a continuous and stable reverse elastic force. This elastic force is ultimately transmitted through sliding ring 304 and base plate 301 to the contact interface between heat spreader 303 and circuit board 201. Second buffer pads 307 are fixedly connected to the four corners of the bottom of base plate 301, and first buffer pads 104 are fixedly connected to the outer walls of the four hollow columns 103. The bottoms of the four first buffer pads 104 are fixedly connected to the arc-shaped seat 102. The first buffer pads 104 and second buffer pads 307 support the core component 2 in the middle for a certain degree of buffering.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A protective lithium battery protection board, comprising a cross plate (1), wherein hollow columns (103) are fixedly connected to each of the four corners of the cross plate (1), characterized in that, The four corners of the cross plate (1) are fixedly connected with arc-shaped seats (102), the hollow column (103) is movably connected with the core component (2), the four hollow columns (103) are fixedly connected with U-shaped frames (105) on the side away from the cross plate (1), and the inner wall of the arc-shaped seat (102) is movably connected with the top component (3). The core component (2) includes: The circuit board (201) has positioning holes (202) at each of its four corners. The inner wall of the positioning holes (202) is movably connected to the hollow column (103). Protective strips (203) are fixedly connected to each of the four corners of the circuit board (201). A wiring board (204) is fixedly connected to the bottom of the circuit board (201). The inner wall of each of the four positioning holes (202) is provided with a buffer plate to buffer the collision between the circuit board (201) and the hollow column (103).

2. The protective lithium battery protection board according to claim 1, characterized in that: Each of the four arc-shaped seats (102) is fixedly connected to a first fixing strip (106), and each of the four first fixing strips (106) is fixedly connected to a second fixing strip (107) at its bottom. Multiple notches are provided between the first fixing strip (106) and the second fixing strip (107), and the number of notches is the same as the number of interfaces on the terminal block (204).

3. A protective lithium battery protection board according to claim 2, characterized in that: The top component (3) includes a substrate (301), a heat dissipation fin (302) is fixedly connected to the top of the substrate (301), and a heat spreader (303) is fixedly connected to the bottom of the substrate (301). The bottom of the heat spreader (303) contacts the heat-generating components on the circuit board (201) through a thermally conductive silicone sheet, so as to transfer heat from the heat spreader (303) to the substrate (301) for heat dissipation.

4. A protective lithium battery protection board according to claim 3, characterized in that: The outer wall arc seat (102) of the substrate (301) is movably connected, and the inner walls of the four corners of the substrate (301) are movably connected with sliding rings (304). The bottom of the sliding ring (304) is fixedly connected with a disc-shaped spring (306). The bottom of the disc-shaped spring (306) is fixedly connected to the substrate (301). The inner wall of the sliding ring (304) is rotatably connected with a bolt (305) through a bearing. The bolt (305) passes through the substrate (301) and extends to the bottom of the substrate (301). The inner wall of the hollow column (103) is threadedly connected to the bolt (305). The top component (3) is fixed to the top of the core component (2) by rotating the bolt (305).

5. A protective lithium battery protection board according to claim 4, characterized in that: The four corners of the bottom of the substrate (301) are fixedly connected with second buffer pads (307), and the outer walls of the four hollow columns (103) are fixedly connected with first buffer pads (104). The bottoms of the four first buffer pads (104) are fixedly connected with the arc-shaped seat (102). The first buffer pads (104) and the second buffer pads (307) support the core component (2) in the middle for a certain buffering.

6. A protective lithium battery protection board according to claim 5, characterized in that: The top of the cross plate (1) is fixedly connected with a support strip (101), and there are four support strips (101). The top of the four support strips (101) is attached to the circuit board (201), and the support strips (101) are used to support the bottom of the circuit board (201).

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