Lithium battery protection board high temperature alarm device

Abstract

The utility model relates to the technical field of lithium battery protection plates, and discloses a lithium battery protection plate high temperature alarm device which comprises a base, a water storage tank fixedly connected to the top of the base, a lithium battery body placed in the water storage tank, a temperature transmission rod installed in a round hole, and a temperature display meter installed at the top of the temperature transmission rod. A control panel is installed at one end of the connecting rod, and an alarm is installed on one side of the control panel. According to the high-temperature alarm device for the lithium battery protection plate, a lithium battery body is placed at the top of the base, the periphery of the lithium battery body is attached to the water storage tank, meanwhile, the surface of a temperature transmission rod makes contact with water in the water storage tank, and when the temperature exceeds the preset temperature, an alarm installed at one end of a temperature display meter will give an alarm; and a worker is reminded to take out the lithium battery body, so that the battery is prevented from being damaged due to overheating or causing dangerous conditions such as fire and explosion.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery protection boards, in particular to a high temperature alarm device for a lithium battery protection board. Background Art

[0002] Battery protection board, as the name implies, is a lithium battery protection board that is mainly an integrated circuit board that protects rechargeable batteries. The reason why lithium batteries need protection is determined by their own characteristics.

[0003] The inventors believe that the existing related technologies often have the following defects: when the internal temperature of a lithium battery exceeds a certain limit, a series of chemical reactions will occur in the components such as the electrolyte, positive and negative electrode materials, and diaphragm inside the battery. These reactions will further release a large amount of heat, causing the internal temperature of the battery to rise sharply. Once the temperature exceeds the thermal stability limit of the battery material, the battery will experience serious safety accidents such as combustion and explosion. Utility Model Content

[0004] The technical problem to be solved by the utility model is that when the internal temperature of a lithium battery exceeds a certain limit, a series of chemical reactions will occur in the components such as the electrolyte, positive and negative electrode materials, and diaphragm inside the battery. These reactions will further release a large amount of heat, causing the internal temperature of the battery to rise sharply, and the battery will cause serious safety accidents such as combustion and explosion. For this reason, we propose a high-temperature alarm device for a lithium battery protection board.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a high temperature alarm device for a lithium battery protection board, comprising a base, a water tank is fixedly connected to the top of the base, a lithium battery body is placed inside the water tank, a circular hole is opened on the top of the water tank, a temperature transfer rod is installed inside the circular hole, a temperature display gauge is installed on the top of the temperature transfer rod, a connecting rod is installed at one end of the temperature display gauge, a control panel is installed at one end of the connecting rod, an alarm is installed on one side of the control panel, a movable groove is opened at one end of the base, a baffle is fixedly connected to the inside of the movable groove.

[0006] Preferably, a slot is provided on the top of the base, a through hole is provided at the bottom of the inner cavity of the slot, a movable rod is slidably connected inside the through hole, an ejection plate is fixedly connected to the top of the movable rod, a force block is fixedly connected to the bottom of the movable rod, a through slot is provided at one end of the baffle, a moving rod is slidably connected inside the through slot, and a pushing block is fixedly connected to one end of the moving rod.

[0007] Preferably, the bottom shape of the force-bearing block and the shape of one end of the pushing block are both arc-shaped.

[0008] Preferably, sliding grooves are provided at both ends of the inner cavity of the movable groove, and sliding blocks are fixedly connected to both ends of the pushing block.

[0009] Preferably, one end of the pushing block is fixedly connected to a return spring, and one end of the return spring is fixedly connected to one end of the baffle.

[0010] Preferably, a return spring is fixedly connected to the top of the force-bearing block, and the top of the return spring is fixedly connected to the top of the inner cavity of the movable groove.

[0011] Preferably, limiting grooves are provided on both sides of the inner cavity of the through hole, and limiting blocks are fixedly connected to both sides of the movable rod.

[0012] Preferably, the four sides of the lithium battery body are in contact with the inner wall of the water tank.

[0013] Technical effects and advantages of the utility model:

[0014] In the utility model, the lithium battery body is placed on the top of the base and is in contact with the water tank on all sides, and the surface of the temperature transmission rod is in contact with the water inside the water tank. When the temperature exceeds the preset temperature, the alarm installed at one end of the temperature display meter will sound an alarm to remind the staff to take out the lithium battery body to prevent the battery from being damaged due to overheating or causing dangerous situations such as fire and explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 A partial enlarged view of the middle A;

[0017] Figure 3 This is a cross-sectional view of the internal structure of the water storage tank of the utility model;

[0018] Figure 4 It is a cross-sectional view of the ejection structure of the utility model;

[0019] Figure 5 For this utility model Figure 4 A partial enlarged view of point B in the middle;

[0020] Figure 6 It is a schematic diagram of the limiting structure of the utility model.

[0021] Legend: 1. Base; 2. Water tank; 3. Temperature transmission rod; 4. Temperature display gauge; 5. Connecting rod; 6. Control panel; 7. Alarm; 8. Movable slot; 9. Notch; 10. Through hole; 11. Movable rod; 12. Force block; 13. Ejector plate; 14. Baffle; 15. Through slot; 16. Moving rod; 17. Push block; 18. Slide; 19. Slider; 20. Return spring; 21. Reset spring; 22. Round hole; 23. Limiting slot; 24. Limiting block; 25. Lithium battery body. DETAILED DESCRIPTION

[0022] The present invention will now be further described in detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0023] Reference Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a technical solution: a high temperature alarm device for a lithium battery protection board, comprising a base 1, a water tank 2 is fixedly connected to the top of the base 1, a lithium battery body 25 is placed inside the water tank 2, a round hole 22 is opened on the top of the water tank 2, a temperature transfer rod 3 is installed inside the round hole 22, a temperature display gauge 4 is installed on the top of the temperature transfer rod 3, a connecting rod 5 is installed at one end of the temperature display gauge 4, a control panel 6 is installed at one end of the connecting rod 5, an alarm 7 is installed on one side of the control panel 6, a movable groove 8 is opened at one end of the base 1, a baffle 14 is fixedly connected inside the movable groove 8. By placing the lithium battery body 25 on the top of the base 1 and fitting it with the water tank 2 on all sides, and the surface of the temperature transfer rod 3 is in contact with the water inside the water tank 2, when the temperature exceeds the preset temperature, the alarm 7 installed at one end of the temperature display gauge 4 will sound an alarm to remind the staff to take out the lithium battery body 25 to prevent the battery from being damaged due to overheating or causing dangerous situations such as fire and explosion.

[0024] Reference Figure 1 , Figure 4 and Figure 5As shown, in this embodiment: a notch 9 is provided at the top of the base 1, a through hole 10 is provided at the bottom of the inner cavity of the notch 9, a movable rod 11 is slidably connected inside the through hole 10, an ejection plate 13 is fixedly connected to the top of the movable rod 11, a force block 12 is fixedly connected to the bottom of the movable rod 11, a through slot 15 is provided at one end of the baffle 14, a moving rod 16 is slidably connected inside the through slot 15, and a pushing block 17 is fixedly connected to one end of the moving rod 16. The staff pushes the moving rod 16 to drive the pushing block 17 to move into the movable groove 8. At this time, the pushing block 17 abuts against the force block 12, so that the force block 12 drives the movable rod 11 and the ejection plate 13 to generate an upward force to eject the lithium battery body 25, so that the staff can quickly take out the lithium battery body 25 with too high temperature.

[0025] Reference Figure 4 As shown, in this embodiment: the bottom shape of the force-bearing block 12 and the shape of one end of the pushing block 17 are both arc-shaped. The arc-shaped design allows the force-bearing block 12 and the pushing block 17 to fit better when in contact, reducing the gap or friction resistance caused by shape mismatch. The arc-shaped structure can transmit force more effectively.

[0026] Reference Figure 4 As shown, in this embodiment: both ends of the inner cavity of the movable groove 8 are provided with sliding grooves 18, and both ends of the pushing block 17 are fixedly connected with sliders 19. Through the coordinated use of the sliding grooves 18 and the sliders 19, the movable rod 16 can provide a stable trajectory for the movement of the pushing block 17 in the movable groove 8 when driving the pushing block 17 to move.

[0027] Reference Figure 4 and Figure 5 As shown, in the present embodiment: one end of the push block 17 is fixedly connected with a return spring 20, and one end of the return spring 20 is fixedly connected to one end of the baffle 14. By setting the return spring 20, when the push block 17 releases the abutment relationship with the force-bearing block 12, the return spring 20 will drive the push block 17 to rebound quickly in the direction of the baffle 14, thereby achieving the effect of quickly resetting the push block 17.

[0028] Reference Figure 4 As shown, in this embodiment: the top of the force-bearing block 12 is fixedly connected with a return spring 21, and the top of the return spring 21 is fixedly connected to the top of the inner cavity of the movable groove 8. By fixing the return spring 21 on the top of the force-bearing block 12, when the force-bearing block 12 is released from the abutment with the pushing block 17, the return spring 21 will generate a downward pulling force to drive the ejection plate 13 to fit more closely with the notch 9.

[0029] Reference Figure 6As shown, in this embodiment: limiting grooves 23 are provided on both sides of the inner cavity of the through hole 10, and limiting blocks 24 are fixedly connected on both sides of the movable rod 11. Through the coordinated use of the limiting blocks 24 and the limiting grooves 23, the movable rod 11 can be more stable when moving inside the through hole 10 without shaking.

[0030] Working principle: by placing the lithium battery body 25 on the top of the base 1 and fitting it with the water tank 2 on all sides, and at the same time, the surface of the temperature transfer rod 3 is in contact with the water inside the water tank 2, when the temperature exceeds the preset temperature, the alarm 7 installed at one end of the temperature display table 4 will sound an alarm to remind the staff to take out the lithium battery body 25 to prevent the battery from being damaged or causing fire, explosion and other dangerous situations due to overheating. The staff pushes the moving rod 16 to drive the pushing block 17 to move inside the movable groove 8. At this time, the pushing block 17 abuts against the force block 12, so that the force block 12 drives the movable rod 11 and the ejection plate 13 to generate an upward force to eject the lithium battery body 25, so that the staff can quickly take out the lithium battery body 25 with too high a temperature. The arc design allows the force block 12 and the pushing block 17 to fit better when in contact, reducing the risk of damage caused by shape mismatch. The gap or friction resistance generated, the arc structure can transmit force more effectively. Through the coordinated use of the slide groove 18 and the slider 19, the movable rod 16 can provide a stable trajectory for the movement of the pushing block 17 in the movable groove 8 when driving the pushing block 17 to move. By setting the return spring 20, when the pushing block 17 releases the abutment relationship with the force-bearing block 12, the return spring 20 will drive the pushing block 17 to rebound quickly in the direction of the baffle 14, thereby achieving the effect of rapid reset of the pushing block 17. By fixedly connecting the return spring 21 to the top of the force-bearing block 12, when the force-bearing block 12 releases the abutment with the pushing block 17, the return spring 21 will generate a downward pulling force to drive the ejection plate 13 to fit more closely with the notch 9. Through the coordinated use of the limit block 24 and the limit groove 23, the movable rod 11 can be more stable when moving inside the through hole 10, and there will be no shaking.

[0031] Finally, it should be noted that the above is only a preferred embodiment 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 embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, 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 high temperature alarm device for a lithium battery protection board, comprising a base (1), characterized in that: A water tank (2) is fixedly connected to the top of the base (1), a lithium battery body (25) is placed inside the water tank (2), a round hole (22) is opened on the top of the water tank (2), a temperature transmission rod (3) is installed inside the round hole (22), a temperature display gauge (4) is installed on the top of the temperature transmission rod (3), a connecting rod (5) is installed at one end of the temperature display gauge (4), a control panel (6) is installed at one end of the connecting rod (5), an alarm (7) is installed on one side of the control panel (6), and a movable groove (8) is opened at one end of the base (1), a baffle (14) is fixedly connected inside the movable groove (8).

2. A lithium battery protection board high temperature alarm device according to claim 1, characterized in that: The top of the base (1) is provided with a notch (9), the bottom of the inner cavity of the notch (9) is provided with a through hole (10), a movable rod (11) is slidably connected inside the through hole (10), a ejection plate (13) is fixedly connected to the top of the movable rod (11), a force-bearing block (12) is fixedly connected to the bottom of the movable rod (11), a through slot (15) is provided at one end of the baffle (14), a moving rod (16) is slidably connected inside the through slot (15), and a pushing block (17) is fixedly connected to one end of the moving rod (16).

3. A lithium battery protection board high temperature alarm device according to claim 2, characterized in that: The bottom shape of the force-bearing block (12) and the shape of one end of the pushing block (17) are both arc-shaped.

4. A lithium battery protection board high temperature alarm device according to claim 2, characterized in that: Slide grooves (18) are provided at both ends of the inner cavity of the movable groove (8), and slide blocks (19) are fixedly connected to both ends of the push block (17).

5. A lithium battery protection board high temperature alarm device according to claim 2, characterized in that: One end of the push block (17) is fixedly connected to a return spring (20), and one end of the return spring (20) is fixedly connected to one end of the baffle (14).

6. A lithium battery protection board high temperature alarm device according to claim 2, characterized in that: A return spring (21) is fixedly connected to the top of the force-bearing block (12), and the top of the return spring (21) is fixedly connected to the top of the inner cavity of the movable groove (8).

7. A lithium battery protection board high temperature alarm device according to claim 2, characterized in that: Limiting grooves (23) are provided on both sides of the inner cavity of the through hole (10), and limiting blocks (24) are fixedly connected to both sides of the movable rod (11).

8. A lithium battery protection board high temperature alarm device according to claim 1, characterized in that: The four sides of the lithium battery body (25) are in contact with the inner wall of the water storage tank (2).

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