A lithium battery protection board with multiple safety protection mechanisms

Abstract

This utility model relates to the field of lithium battery protection board technology, specifically a lithium battery protection board with multiple safety protection mechanisms. It includes a protective shell, with heat exchange pipes fixedly installed on the inner wall of the protective shell, and multiple damping pads fixedly installed on the inner wall of the protective shell. The damping pads, installed between the inner wall of the protective shell and the outer wall of the insulating shell, form an elastic buffer layer between the lithium battery and the protective shell. When subjected to compression, collision, or vibration, the damping pads can dissipate energy through deformation, reducing the direct compression of the lithium battery by the protective shell, avoiding problems such as battery shell deformation or misalignment of internal electrode plates, and ensuring the safety of lithium battery use. The multiple heat exchange pipes installed on the inner wall of the protective shell, when activated by an electric exhaust fan, allow external air to enter the heat exchange pipes through the air inlet and exit through the air outlet, achieving rapid heat dissipation inside the protective shell.

Description

Technical Field

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

[0002] Against the backdrop of rapid development in new energy technologies, lithium batteries are widely used in electric vehicles, energy storage systems, and other fields due to their high energy density. However, they face risks of mechanical damage and thermal runaway during operation. Traditional lithium battery protection boards often focus on single-faceted protection, such as rigid casing protection or simple heat dissipation structures. These are insufficient to simultaneously address electrode misalignment caused by compression and impact, internal short circuits, and sudden temperature rises under high loads. Furthermore, heat dissipation channels are easily blocked in dusty environments, further exacerbating safety hazards. Existing technologies have shortcomings in the integrated design of mechanical buffering and heat dissipation systems, failing to meet the safety requirements of lithium batteries under complex operating conditions. There is an urgent need for a protection board with multiple protection mechanisms that combines buffering, heat dissipation, and dust prevention functions to improve the reliability and safety of lithium batteries throughout their entire life cycle.

[0003] As disclosed in the patent announcement CN213401295U, an assembled lithium battery protection board relates to the field of lithium battery protection board technology. This assembled lithium battery protection board includes a shell and a lithium battery protection board body. A lithium battery is installed inside the shell. A mounting plate is provided below the lithium battery protection board body, and connecting cylinders are fixed at the four corners of the top of the mounting plate. Bolts extending into the connecting cylinders are screwed to the four corners of the top of the lithium battery protection board body. Four vibration damping mechanisms arranged in a circular array are connected to the bottom of the mounting plate. This invention, through the arrangement of linear sliders, linear grooves, and fastening rods, enables the sliding assembly and disassembly of the lithium battery protection board, thereby achieving rapid assembly and disassembly, effectively improving the assembly and disassembly efficiency of the lithium battery protection board, facilitating rapid maintenance of the lithium battery protection board, and ensuring its normal use.

[0004] While the aforementioned solutions improve the assembly and disassembly efficiency of the lithium battery protection board through structural coordination, the board lacks buffering and heat dissipation measures for the lithium battery during use, which hinders the assurance of the battery's safety and durability. Therefore, we propose a lithium battery protection board with multiple safety protection mechanisms, solving the problems of buffering and rapid heat dissipation for lithium batteries, thereby improving battery safety and ensuring their performance. Utility Model Content

[0005] The purpose of this invention is to provide a lithium battery protection board with multiple safety protection mechanisms to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lithium battery protection board with multiple safety protection mechanisms.

[0008] As a further embodiment of this utility model: it includes a protective shell, and a heat exchange pipe is fixedly installed on the inner wall of the protective shell. One end of the heat exchange pipe is connected to an electric exhaust fan, and the other end is connected to an air inlet. Multiple guide strips are fixedly installed inside the heat exchange pipe, and the spacing between the guide strips is consistent. The guide strips divide the internal space of the heat exchange pipe into S-shaped channels. The heat exchange pipe is made of aluminum.

[0009] As a further embodiment of this utility model: a lithium battery is fixedly installed inside the protective shell, an insulating shell is fixedly installed outside the lithium battery, and the lithium battery is electrically connected to the electric exhaust fan through a circuit channel on the protective board.

[0010] As a further embodiment of this utility model: a plurality of damping pads are fixedly provided on the inner wall of the protective shell, the damping pads being located between the outer wall of the insulating shell and the inner wall of the protective shell, and the damping pads being silicone rubber damping pads.

[0011] As a further embodiment of this utility model: there are two electric exhaust fans, which are fixedly installed on the side wall of the protective shell; there are two air inlets, which are fixedly located on the side of the protective shell away from the electric exhaust fans; a push-button switch is installed on one side of the electric exhaust fan, which is electrically connected to the electric exhaust fan; and a protective cover is fixedly installed on the outside of the electric exhaust fan, which is fixedly installed on the side wall of the protective shell.

[0012] As a further improvement of this utility model: a first filter screen is fixedly installed at the air inlet, a second filter screen is fixedly installed on one side of the protective cover, and the air inlet is connected to the heat exchange channel.

[0013] As a further embodiment of this utility model: a protective cover is fixedly installed on the top of the protective shell, and multiple damping pads are evenly arranged on the bottom surface of the protective cover. The protective cover has two reserved through holes, which correspond one-to-one with the power terminals of the lithium battery. A slot matching the bottom of the insulating shell is fixedly provided on the inner bottom surface of the protective shell, and a silicone pad is pasted on the inner wall of the slot.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This lithium battery protection board features multiple safety protection mechanisms. By placing several silicone rubber damping pads between the lithium battery and the protective casing, an elastic buffer layer is formed between the lithium battery and the protective casing. When subjected to compression, collision, or vibration, the damping pads can dissipate energy through deformation, reducing the direct compression of the lithium battery by the protective casing and avoiding problems such as battery casing deformation or internal electrode misalignment, thus ensuring the safety of lithium battery use.

[0016] This lithium battery protection board features multiple safety protection mechanisms. By installing multiple heat exchange pipes on the inner wall of the protective casing, when the electric exhaust fan is turned on, external air enters the heat exchange pipes through the air inlet, exchanges heat with the hot air inside the protective casing, and is then discharged through the exhaust port. This achieves active heat dissipation inside the protective casing, effectively reducing the temperature rise rate of the lithium battery and thus ensuring its working performance.

[0017] This lithium battery protection board, equipped with multiple safety protection mechanisms, creates an S-shaped air channel inside the heat exchange pipe by fixing multiple guide strips inside the heat exchange pipe. Combined with the high thermal conductivity of the aluminum pipe, it greatly improves the heat exchange efficiency.

[0018] This lithium battery protection board, equipped with multiple safety protection mechanisms, uses a sealed heat exchange pipe on the inner wall of the protective casing, in conjunction with an electric exhaust fan, to prevent external dust or impurities from entering the interior of the protective casing, thereby reducing circuit failures caused by impurity accumulation and extending the lifespan of the lithium battery. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of a lithium battery protection board with multiple safety protection mechanisms. Figure 1 ;

[0020] Figure 2 A schematic diagram of the overall structure of a lithium battery protection board with multiple safety protection mechanisms. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the internal structure of the protective shell of a lithium battery protection board with multiple safety protection mechanisms.

[0022] Figure 4 This is a lithium battery protection board with multiple safety protection mechanisms. Figure 3 Enlarged diagram of point A in the middle.

[0023] In the diagram: 1. Protective casing; 2. Heat exchange pipe; 3. Electric exhaust fan; 4. Air inlet; 5. Damping pad; 6. Air guide strip; 7. Lithium battery; 8. Insulating casing; 9. Push button switch; 10. Protective cover; 11. First filter screen; 12. Second filter screen; 13. Protective cover; 1301. Reserved through hole; 14. Slot. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Example: A lithium battery protection board with multiple safety protection mechanisms, such as... Figures 1-4 As shown, the device includes a protective outer shell 1. A heat exchange pipe 2 is fixedly installed on the inner wall of the protective outer shell 1. One end of the heat exchange pipe 2 is connected to an electric exhaust fan 3, and the other end is connected to an air inlet 4. Multiple guide strips 6 are fixedly installed inside the heat exchange pipe 2. The guide strips 6 are spaced at the same distance and divide the internal space of the heat exchange pipe 2 into S-shaped channels. The heat exchange pipe 2 is made of aluminum. There are two electric exhaust fans 3, which are fixedly installed on the side wall of the protective outer shell 1. There are two air inlets 4, which are fixedly installed on the side of the protective outer shell 1 away from the electric exhaust fans 3. A push-button switch 9 is installed on one side of the electric exhaust fan 3 and is electrically connected to the electric exhaust fan 3. A protective cover 10 is fixedly installed on the outside of the electric exhaust fan 3 and is fixedly installed on the side wall of the protective outer shell 1. A first filter screen 11 is fixedly installed on the air inlet 4, and a second filter screen 12 is fixedly installed on one side of the protective cover 10.

[0027] In this embodiment, the electric exhaust fan 3 is activated by the button switch 9, allowing external air to enter the heat exchange pipe 2 through the air inlet 4 and exit through the exhaust outlet. This achieves rapid heat dissipation inside the protective casing 1, thereby reducing the temperature rise of the lithium battery 7 and extending its service life. Multiple guide strips 6 are fixedly installed inside the heat exchange pipe 2, forming an S-shaped air channel. This increases the residence time of air inside the heat exchange pipe 2, improving its heat exchange efficiency.

[0028] like Figures 1-3As shown, the device includes a protective housing 1, a lithium battery 7 fixedly installed inside the protective housing 1, an insulating housing 8 fixedly installed outside the lithium battery 7, the lithium battery 7 being electrically connected to an electric exhaust fan 3, a plurality of damping pads 5 fixedly installed on the inner wall of the protective housing 1, the damping pads 5 being located between the outer wall of the insulating housing 8 and the inner wall of the protective housing 1, the damping pads 5 being silicone rubber damping pads 5, a protective cover 13 fixedly installed on the top of the protective housing 1, the protective cover 13 having two reserved through holes 1301, and a slot 14 fixedly installed on the inner bottom surface of the protective housing 1 that matches the bottom of the insulating housing 8.

[0029] In this embodiment, the lithium battery 7 is installed inside the protective shell 1 through the slot 14. The damping pad provided between the inner wall of the protective shell and the outer wall of the insulating shell forms an elastic buffer layer between the lithium battery and the protective shell. When subjected to compression, collision or vibration, the damping pad can dissipate energy through deformation, reduce the direct compression of the lithium battery by the protective shell, avoid problems such as deformation of the battery shell or misalignment of the internal electrode plates, and ensure the safety of the lithium battery.

[0030] In this embodiment, a lithium battery protection board with multiple safety protection mechanisms is used. First, the lithium battery 7 is fixedly installed inside the protective shell 1 through the slot 14 opened on the bottom inner surface of the protective shell 1. Then, the protective cover 13 is fixedly installed on the top of the protective shell 1. A damping pad 5 is provided between the inner wall of the protective shell 1 and the outer wall of the insulating shell 8, so that an elastic buffer layer is formed between the lithium battery 7 and the protective shell 1. When subjected to compression, collision or vibration, the damping pad 5 can dissipate energy through deformation, reducing the direct compression of the lithium battery 7 by the protective shell, avoiding problems such as deformation of the battery shell or misalignment of the internal electrode plates, and ensuring the safety of the lithium battery 7. Through multiple heat exchange pipes 2 provided on the inner wall of the protective shell 1, the electric exhaust fan 3 is activated, so that external air enters the heat exchange pipes 2 through the air inlet 4 and is discharged through the exhaust port, achieving a rapid heat dissipation effect inside the protective shell 1, thereby reducing the temperature rise of the lithium battery 7, extending the service life of the lithium battery 7, and ensuring the performance of the lithium battery 7. Among them, by fixing multiple guide strips 6 inside the heat exchange pipe 2, an S-shaped air channel is formed inside the heat exchange pipe 2, thereby increasing the residence time of air inside the heat exchange pipe 2 and improving the heat exchange effect.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lithium battery protection board with multiple security protection mechanisms, comprising a protective shell (1), characterized in that: The inner wall of the protective shell (1) is fixedly provided with a heat exchange pipe (2), one end of the heat exchange pipe (2) is connected to an electric exhaust fan (3), and the other end is connected to an air inlet (4); The inner wall of the protective shell (1) is fixedly provided with multiple damping pads (5); The heat exchange pipe (2) is fixedly provided with multiple guide strips (6), and the spacing between the guide strips (6) is consistent.

2. The lithium battery protection board with multiple security protection mechanisms according to claim 1, characterized in that: A lithium battery (7) is fixedly installed inside the protective shell (1), and an insulating shell (8) is fixedly installed on the outside of the lithium battery (7). The lithium battery (7) is electrically connected to the electric exhaust fan (3).

3. The lithium battery protection board with multiple security protection mechanisms according to claim 1, characterized in that: The damping pad (5) is located between the outer wall of the insulating shell (8) and the inner wall of the protective shell (1), and the damping pad (5) is a silicone rubber damping pad (5).

4. The lithium battery protection board with multiple security protection mechanisms according to claim 1, characterized in that: The guide strip (6) divides the internal space of the heat exchange pipe (2) into an S-shaped channel, and the heat exchange pipe (2) is made of aluminum.

5. The lithium battery protection board with multiple security protection mechanisms according to claim 1, characterized in that: There are two electric exhaust fans (3), which are fixedly installed on the side wall of the protective shell (1). There are two air inlets (4), which are fixedly located on the side of the protective shell (1) away from the electric exhaust fans (3).

6. The lithium battery protection board with multiple security protection mechanisms according to claim 1, characterized in that: The air inlet (4) is matched with the electric exhaust fan (3). A button switch (9) is installed on one side of the electric exhaust fan (3). The button switch (9) is electrically connected to the electric exhaust fan (3). A protective cover (10) is fixedly installed on the outside of the electric exhaust fan (3). The protective cover (10) is fixedly installed on the side wall of the protective shell (1).

7. The lithium battery protection board with multiple security protection mechanisms according to claim 6, characterized in that: The air inlet (4) is fixedly equipped with a first filter screen (11), and the protective cover (10) is fixedly equipped with a second filter screen (12) on one side.

8. The lithium battery protection board with multiple security protection mechanisms according to claim 1, characterized in that: The protective shell (1) is fixedly installed with a protective cover (13) at the top. The protective cover (13) has two reserved through holes (1301). The inner bottom surface of the protective shell (1) is fixedly provided with a slot (14) that matches the bottom of the insulating shell (8).

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