Lithium battery protection device

Abstract

The utility model belongs to the technical field of lithium battery protection devices, and particularly relates to a lithium battery protection device which comprises a protection box, a box door, a connector, an opening and closing assembly, a mounting plate, a pressing plate, a lithium battery, a clamping buffer assembly, an exhaust fan and a heat dissipation assembly. The mounting plate and the pressing plate are slidably mounted on the inner wall of the protection box, and the clamping buffer assembly is arranged on the pressing plate and the mounting plate. The lithium battery heat dissipation device is reasonable in design, effective buffering and protection can be provided for the lithium battery when collision and other situations occur through the cooperation of the arranged clamping buffering assembly and the rubber wrap angle, meanwhile, the heat dissipation effect of the lithium battery can be guaranteed under the cooperation of the heat dissipation assembly, the exhaust fan and the opening and closing assembly, the lithium battery heat dissipation device can be suitable for lithium batteries of different sizes, and the service life of the lithium battery is prolonged. And moreover, the lithium battery can be conveniently taken and placed, and the effect of good portability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery protection devices, in particular to a lithium battery protection device. Background Art

[0002] Lithium battery is a primary battery that uses lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. It is different from rechargeable lithium ion battery and lithium ion polymer battery. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, it is necessary to avoid collision and impact during the use of lithium batteries, and to use protective devices to protect them. Traditional lithium battery protection devices are to install them in a protective box and fill them with a certain amount of buffer to achieve the energy dissipation effect during the collision. The protection effect on lithium batteries is general, and there is also the situation that it is inconvenient to take and put lithium batteries. At the same time, the heat dissipation requirements of lithium batteries are also relatively strict. In order to avoid overheating of lithium batteries, a cooling fan is generally set for heat dissipation. However, the heat dissipation effect is general when the cooling fan is used alone for heat dissipation. The heat that cannot be discharged in time will have a bad effect on the lithium battery. For this reason, the utility model proposes a lithium battery protection device to solve the above problems.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art and proposes a lithium battery protection device.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: a lithium battery protection device, including a protection box, a box door, a connector, an opening and closing assembly, a mounting plate, a pressure plate, a lithium battery, a clamping buffer assembly, an exhaust fan and a heat dissipation assembly;

[0006] The box door is hingedly mounted on the front side of the protection box, the connector is fixedly mounted on the box door, the mounting plate and the pressure plate are both slidably mounted on the inner wall of the protection box, the clamping buffer assembly is arranged on the pressure plate and the mounting plate, the exhaust fan is fixedly mounted on the mounting plate, an air outlet is opened on the bottom inner wall of the protection box, and the opening and closing assembly is arranged in the air outlet, the heat dissipation assembly is arranged on the protection box, the lithium battery is arranged between the pressure plate and the mounting plate through the clamping buffer assembly, and the heat dissipation assembly is connected to the lithium battery and the clamping buffer assembly.

[0007] Preferably, the clamping buffer assembly includes four baffles, four sliding rods, four damping springs 2 and two card plates. Two sliding grooves are provided on the pressure plate and the mounting plate. Sliding rods are fixedly installed in the four sliding grooves. Baffles are slidably installed on the four sliding rods. Card plates are fixedly installed on the sides of the two upper baffles close to each other. The lithium battery is clamped and fixed between the pressure plate and the mounting plate by the four baffles and the two card plates. Damping spring 2 is fixedly installed on the baffle. One end of the damping spring 2 away from the baffle is fixedly installed on the inner wall of the sliding groove, and the damping spring 2 is movably sleeved on the outer side of the corresponding sliding rod.

[0008] Preferably, the clamping buffer assembly also includes two adjusting screws, two toothed pulleys, a toothed belt and an adjusting wheel. Two screw sleeves are fixedly installed on the pressure plate. The two screw sleeves are respectively threaded on the corresponding adjusting screws. U-shaped plates are fixedly installed on the inner walls on both sides of the protection box. Adjusting screws are rotatably installed on the two U-shaped plates. Toothed pulleys are fixedly installed on the two adjusting screws, and the same toothed belt is transmission-connected to the two toothed pulleys.

[0009] Preferably, the clamping buffer assembly also includes multiple damping rods and multiple damping springs, and the multiple damping rods and multiple damping springs are fixedly installed on the bottom side of the mounting plate, and the bottom ends of the multiple damping rods and multiple damping springs are fixedly installed on the bottom inner wall of the protective box.

[0010] Preferably, a plurality of guide rods are fixedly mounted on the bottom side of the U-shaped plate and the bottom inner wall of the protection box, and the plurality of guide rods are all slidably connected to the mounting plate.

[0011] Preferably, the heat dissipation assembly includes four silicone thermally conductive sheets, four flexible thermally conductive plates and two heat sinks. The four baffles are fixedly mounted with silicone thermally conductive sheets, the four silicone thermally conductive sheets are in contact with the lithium batteries, heat sinks are fixedly mounted on both sides of the protective box, two flexible thermally conductive plates are fixedly mounted on the two heat sinks, and the four flexible thermally conductive plates are respectively connected to the corresponding silicone thermally conductive sheets.

[0012] Preferably, the opening and closing assembly includes two rotating rods, two rotating sealing plates and two torsion springs. The two rotating rods are rotatably installed on the inner wall of the air outlet, and the two rotating rods are fixedly installed with rotating sealing plates. Two torsion springs are fixedly installed on the two rotating sealing plates, and one end of the four torsion springs away from the rotating sealing plates is fixedly installed on the inner wall of the air outlet, and the torsion spring movable sleeve is arranged on the outer side of the corresponding rotating rod.

[0013] Preferably, a rectangular opening is opened on the mounting plate, and a mesh plate and a mounting frame are fixedly mounted on the top and bottom sides of the mounting plate respectively, the lithium battery is located on the mesh plate, the exhaust fan is fixedly mounted on the mounting frame, a temperature control switch is fixedly mounted on the mounting frame, and the temperature control switch is electrically connected to the exhaust fan.

[0014] Preferably, a plurality of rubber corners are fixedly mounted on the protection box, and a handle is provided on the top of the protection box.

[0015] The beneficial effects of the utility model are as follows: in the utility model, the clamping buffer component is arranged in cooperation with the rubber corner wrapping to provide effective buffering and protection for the lithium battery in the event of a collision or the like, and at the same time, with the cooperation of the heat dissipation component, the exhaust fan and the opening and closing component, the heat dissipation effect of the lithium battery can be guaranteed. It is not only suitable for lithium batteries of different sizes, but also convenient for taking and placing the lithium battery, and has a good portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the lithium battery protection device proposed by the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the lithium battery protection device proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of part A of the lithium battery protection device proposed in the utility model;

[0020] Figure 4 This is a schematic structural diagram of the rotating sealing plate, rotating pin and torsion spring part proposed by the utility model.

[0021] In the figure: 1. protection box; 11. box door; 12. connector; 13. rotating cover plate; 14. torsion spring; 2. mounting plate; 21. mesh plate; 22. exhaust fan; 23. temperature control switch; 24. damping spring 1; 25. damping rod; 26. damping spring 2; 3. lithium battery; 4. pressure plate; 5. baffle; 51. card plate; 6. silicone thermal conductive sheet; 61. flexible thermal conductive plate; 62. heat sink; 7. adjusting screw; 71. toothed pulley; 72. toothed belt. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] reference Figure 1-4The lithium battery protection device comprises a protection box 1, a box door 11, a connector 12, a mounting plate 2, a pressure plate 4, a lithium battery 3 and an exhaust fan 22. The box door 11 is hingedly mounted on the front side of the protection box 1, the connector 12 is fixedly mounted on the box door 11, the mounting plate 2 and the pressure plate 4 are both slidably mounted on the inner wall of the protection box 1, two slide grooves are provided on the pressure plate 4 and the mounting plate 2, four slide grooves are fixedly mounted with sliding rods, baffles 5 are slidably mounted on the four sliding rods, and the two baffles 5 located at the top are fixedly mounted with card plates 51 on the sides close to each other. The lithium battery 3 is clamped and fixed between the pressure plate 4 and the mounting plate 2 by the four baffles 5 and the two card plates 51, and a damping spring 26 is fixedly mounted on the baffle 5, and the end of the damping spring 26 away from the baffle 5 is fixedly mounted on the sliding The inner wall of the groove is provided, and the damping spring 26 is movably sleeved on the outer side of the corresponding sliding rod, which can control the four baffles 5 to stably clamp the lithium battery 3. The pressure plate 4 is fixedly installed with two screw sleeves, and the two screw sleeves are respectively threadedly sleeved on the corresponding adjusting screw rods 7. U-shaped plates are fixedly installed on the inner walls of both sides of the protection box 1, and the adjusting screw rods 7 are rotatably installed on the two U-shaped plates. The two adjusting screw rods 7 are fixedly sleeved with toothed pulleys 71, and the two toothed pulleys 71 are connected to the same toothed belt 72 for transmission, which can control the lifting of the pressure plate 4, thereby adjusting the distance between the pressure plate 4 and the top of the lithium battery 3, and then can press and fix lithium batteries 3 of different sizes according to actual needs, and multiple damping rods 25 and multiple damping rods are fixedly installed on the bottom side of the mounting plate 2. The bottom ends of the damping springs 24, the damping rods 25 and the damping springs 24 are all fixedly mounted on the bottom inner wall of the protection box 1, which can provide effective buffering for the mounting plate 2 when vibration occurs, and can prevent the mounting plate 2 from vibrating under the reaction force of the damping springs 24. A rectangular opening is provided on the mounting plate 2, and a mesh plate 21 and a mounting frame are fixedly mounted on the top and bottom sides of the mounting plate 2, respectively. The lithium battery 3 is located on the mesh plate 21, and the exhaust fan 22 is fixedly mounted on the mounting frame. A temperature control switch 23 is fixedly mounted on the mounting frame. The temperature control switch 23 is electrically connected to the exhaust fan 22, and can enable the exhaust fan 22 to perform exhaust operation from below the lithium battery 3 when the temperature in the protection box 1 rises to the set value of the temperature control switch 23, thereby being able to remove the lithium battery 3. The surrounding heat is discharged from the protection box 1, and an air outlet is opened on the bottom inner wall of the protection box 1. Two rotating rods are rotatably installed on the inner wall of the air outlet, and a rotating sealing plate 13 is fixedly installed on the two rotating rods. Two torsion springs 14 are fixedly installed on the two rotating sealing plates 13. The ends of the four torsion springs 14 away from the rotating sealing plates 13 are fixedly installed on the inner wall of the air outlet, and the torsion springs 14 are movably sleeved on the outer sides of the corresponding rotating rods, so that the air outlet can be opened when the exhaust fan 22 is working, and the air outlet can be closed when the exhaust fan 22 stops working. Silicone thermal conductive sheets 6 are fixedly installed on the four baffles 5, and the four silicone thermal conductive sheets 6 are in contact with the lithium battery 3. Heat sinks 62 are fixedly installed on both sides of the protection box 1, and heat sinks 62 are provided with heat dissipation fins.Two flexible heat-conducting plates 61 are fixedly mounted on the two heat-dissipating plates 62. The flexible heat-conducting plates 61 can be made of graphite sheets. The four flexible heat-conducting plates 61 are respectively connected to the corresponding silicone heat-conducting sheets 6, so as to discharge the heat on the lithium battery 3 out of the protective box 1.

[0024] In this embodiment, a plurality of guide rods are fixedly installed on the bottom side of the U-shaped plate and the bottom inner wall of the protective box 1. The plurality of guide rods are slidably connected to the mounting plate 2 and can provide guidance for the mounting plate 2, thereby enabling the mounting plate 2 to maintain stable lifting and lowering.

[0025] In this embodiment, a plurality of rubber corners are fixedly mounted on the protection box 1 , and a handle is provided on the top of the protection box 1 , which can improve the anti-collision effect of the protection box 1 and facilitate the carrying of the device.

[0026] Working principle: When in use, first open the box door 11 and place the lithium battery 3 to be protected on the mesh plate 21 on the mounting plate 2, and make it located between the four baffles 5. Then, rotate the adjusting screw 7 through the adjusting wheel. Under the action of the toothed pulley 71 and the toothed belt 72, the two adjusting screws 7 can control the pressure plate 4 to move downward toward the lithium battery 3 and make the baffle 5 abut against the top side of the lithium battery 3. After the lithium battery 3 is stable, close the box door 11. When a collision occurs, the rubber wrapping angle can reduce the impact of the protective box 1 on the lithium battery 3. At the same time, with the cooperation of components such as the damping spring 1 24, the damping spring 26 and the damping rod 25, the lithium battery 3 can be buffered, thereby providing effective protection for the lithium battery 3 and discharging the heat generated by the lithium battery 3 out of the protective box 1.

[0027] The lithium battery protection device provided by the utility model is introduced in detail above. The principle and implementation method of the utility model are explained in this article using specific embodiments. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A lithium battery protection device, characterized in that: It comprises a protective box (1), a box door (11), a connector (12), an opening and closing assembly, a mounting plate (2), a pressing plate (4), a lithium battery (3), a clamping buffer assembly, an exhaust fan (22) and a heat dissipation assembly; The box door (11) is hingedly mounted on the front side of the protection box (1), the connector (12) is fixedly mounted on the box door (11), the mounting plate (2) and the pressure plate (4) are both slidably mounted on the inner wall of the protection box (1), the clamping buffer assembly is arranged on the pressure plate (4) and the mounting plate (2), the exhaust fan (22) is fixedly mounted on the mounting plate (2), an air outlet is opened on the bottom inner wall of the protection box (1), and the opening and closing assembly is arranged in the air outlet, the heat dissipation assembly is arranged on the protection box (1), the lithium battery (3) is arranged between the pressure plate (4) and the mounting plate (2) through the clamping buffer assembly, and the heat dissipation assembly is connected to the lithium battery (3) and the clamping buffer assembly.

2. The lithium battery protection device according to claim 1, characterized in that: The clamping buffer assembly comprises four baffles (5), four slide bars, four damping springs (26) and two clamping plates (51). Two slide grooves are provided on the pressure plate (4) and the mounting plate (2). Slide bars are fixedly installed in the four slide grooves. Baffles (5) are slidably installed on the four slide bars. The two baffles (5) located at the top are fixedly installed with clamping plates (51) on the sides close to each other. The lithium battery (3) is clamped and fixed between the pressure plate (4) and the mounting plate (2) by the four baffles (5) and the two clamping plates (51). The damping spring (26) is fixedly installed on the baffle (5). One end of the damping spring (26) away from the baffle (5) is fixedly installed on the inner wall of the slide groove, and the damping spring (26) is movably sleeved on the outer side of the corresponding slide bar.

3. The lithium battery protection device according to claim 1, characterized in that: The clamping buffer assembly also includes two adjusting screws (7), two toothed pulleys (71), a toothed belt (72) and an adjusting wheel. The pressure plate (4) is fixedly mounted with two screw sleeves, and the two screw sleeves are respectively threadedly mounted on the corresponding adjusting screws (7). U-shaped plates are fixedly mounted on the inner walls of both sides of the protection box (1), and the adjusting screws (7) are rotatably mounted on the two U-shaped plates. The two adjusting screws (7) are fixedly mounted with toothed pulleys (71), and the two toothed pulleys (71) are transmission-connected with the same toothed belt (72).

4. The lithium battery protection device according to claim 1, characterized in that: The clamping buffer assembly also includes a plurality of damping rods (25) and a plurality of damping springs (24); the plurality of damping rods (25) and the plurality of damping springs (24) are fixedly mounted on the bottom side of the mounting plate (2); the bottom ends of the plurality of damping rods (25) and the plurality of damping springs (24) are fixedly mounted on the bottom inner wall of the protection box (1).

5. The lithium battery protection device according to claim 3, characterized in that: A plurality of guide rods are fixedly mounted on the bottom side of the U-shaped plate and the bottom inner wall of the protection box (1), and the plurality of guide rods are all slidably connected to the mounting plate (2).

6. The lithium battery protection device according to claim 2, characterized in that: The heat dissipation assembly comprises four silicone heat conductive sheets (6), four flexible heat conductive plates (61) and two heat dissipation plates (62); the silicone heat conductive sheets (6) are fixedly mounted on the four baffles (5); the four silicone heat conductive sheets (6) are in contact with the lithium battery (3); the heat dissipation plates (62) are fixedly mounted on both sides of the protection box (1); two flexible heat conductive plates (61) are fixedly mounted on the two heat dissipation plates (62); and the four flexible heat conductive plates (61) are respectively connected to the corresponding silicone heat conductive sheets (6).

7. The lithium battery protection device according to claim 1, characterized in that: The opening and closing assembly comprises two rotating rods, two rotating sealing plates (13) and two torsion springs (14); the two rotating rods are rotatably mounted on the inner wall of the air outlet; the rotating sealing plates (13) are fixedly mounted on the two rotating rods; the two torsion springs (14) are fixedly mounted on the two rotating sealing plates (13); one end of the four torsion springs (14) away from the rotating sealing plates (13) is fixedly mounted on the inner wall of the air outlet; and the torsion springs (14) are movably sleeved on the outer sides of the corresponding rotating rods.

8. The lithium battery protection device according to claim 1, characterized in that: The mounting plate (2) is provided with a rectangular opening, and a mesh plate (21) and a mounting frame are fixedly mounted on the top and bottom sides of the mounting plate (2), respectively. The lithium battery (3) is located on the mesh plate (21), and the exhaust fan (22) is fixedly mounted on the mounting frame. A temperature control switch (23) is fixedly mounted on the mounting frame, and the temperature control switch (23) is electrically connected to the exhaust fan (22).

9. The lithium battery protection device according to claim 1, characterized in that: A plurality of rubber corners are fixedly mounted on the protection box (1), and a handle is provided on the top of the protection box (1).

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