Lithium battery with explosion-proof structure

Abstract

The utility model discloses a lithium battery with an explosion-proof structure, which relates to the technical field of lithium batteries and comprises a shell, a heat dissipation mechanism and four shock absorption mechanisms are arranged on the shell, the heat dissipation mechanism is arranged at the tops of the four shock absorption mechanisms and comprises an inner heat dissipation component and an outer heat dissipation component, and the inner heat dissipation component and the outer heat dissipation component are arranged on the shell. The inner heat dissipation assembly is arranged in the outer heat dissipation assembly, and the outer heat dissipation assembly comprises a dustproof net, an external water pump, a first liquid cooling pipe, a second liquid cooling pipe, a water tank, a sealing plug, a second cooling fin set, a mounting frame, a motor, fan blades and a semiconductor chilling plate. The heat dissipation mechanism is arranged to dissipate heat inside and outside the battery cell box, heat generated in the operation process of the lithium battery body is conducted out, the temperature is monitored in real time through the temperature sensor, when the temperature is too high, air cooling and water cooling are utilized to surround the outside of the battery cell box to cool the battery cell box, and the situation that the lithium battery body explodes due to the too high temperature is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a lithium battery with an explosion-proof structure. Background Art

[0002] Lithium batteries are usually placed in battery boxes for use. Due to the extremely active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. The battery may generate heat due to internal impedance when charging or discharging. If the temperature is too high, the internal chemical reactions may get out of control, causing thermal runaway, which may lead to battery explosion.

[0003] Moreover, lithium batteries present safety risks when subjected to severe vibrations, and existing lithium batteries are not provided with corresponding cooling and shock absorbing measures after installation to prevent explosion. Utility Model Content

[0004] The purpose of the utility model is to provide a lithium battery with an explosion-proof structure to solve at least any one of the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a lithium battery with an explosion-proof structure, comprising a shell, a heat dissipation mechanism and four shock absorbing mechanisms are arranged on the shell, and the heat dissipation mechanism is arranged on the top of the four shock absorbing mechanisms;

[0006] The heat dissipation mechanism comprises an inner heat dissipation component and an outer heat dissipation component, wherein the inner heat dissipation component is arranged inside the outer heat dissipation component;

[0007] The external heat dissipation component includes a dustproof net, an external water pump, a first liquid cooling tube, a second liquid cooling tube, a water tank, a sealing plug, a second heat sink group, a mounting frame, a motor, a fan blade, and a semiconductor refrigeration sheet. The output end of the external water pump is detachably connected to one end of the first liquid cooling tube, one end of the second liquid cooling tube is detachably connected to the input end of the external water pump, the water tank is detachably connected to the other end of the second liquid cooling tube, the other end of the first liquid cooling tube is detachably connected to the water tank, the semiconductor refrigeration sheet is detachably connected to the inner wall of the water tank, a water inlet is provided at the top of the water tank, the sealing plug is arranged in the water inlet, the sealing plug is detachably connected to the water tank, the second heat sink group is pasted on the rear end of the first liquid cooling tube, the second heat sink group is detachably connected to the second liquid cooling tube, the motor is fixedly connected to the front end of the mounting frame, a mounting hole is provided at the center of the front end of the fan blade, the output end of the motor is arranged in the mounting hole, the fan blade is detachably connected to the output end of the motor, the output end of the motor is connected to the rear end of the mounting frame, and the dustproof net is detachably connected to the top of the mounting frame.

[0008] Preferably, the external water pump is detachably connected to the left side of the inner wall of the outer shell, the water tank is detachably connected to the left side of the inner wall of the outer shell, the water pump is arranged at the front end of the water tank, and the mounting bracket is fixedly connected to the front end of the inner wall of the outer shell;

[0009] The first liquid cooling tube and the second liquid cooling tube are both made of aluminum alloy.

[0010] Preferably, the internal heat dissipation component includes a battery box, a box cover, a negative electrode terminal, a positive electrode terminal, a temperature sensor, a lithium battery body, a battery bracket, a first heat sink group and two thermally conductive silicone pads, the battery box is fixedly connected to the bottom of the inner wall of the outer shell, the battery bracket is detachably connected to the inner wall of the battery box, the lithium battery body is detachably connected to the inner wall of the battery bracket, the two thermally conductive silicone pads are respectively adhered to the left and right sides of the battery bracket, the first heat sink group is adhered to the rear end of the battery bracket, the first heat sink group is detachably connected to the battery box, the box cover is detachably connected to the top of the battery box, the negative electrode terminal is fixedly connected to the left side of the top of the box cover, the positive electrode terminal is fixedly connected to the right side of the top of the box cover, the display end of the temperature sensor is detachably connected to the middle of the top of the box cover, the box cover is provided with a mounting hole, and the sensing end of the temperature sensor is provided in the mounting hole.

[0011] Preferably, the first liquid cooling tube is adhered to the upper outer wall of the battery box, the second liquid cooling tube is adhered to the lower outer wall of the battery box, and the water tank is fixedly connected to the front left side of the battery box.

[0012] Preferably, the dustproof net is arranged on the outer wall of the outer shell and the battery box.

[0013] Preferably, the four shock absorbing mechanisms each include a shock absorber and an angle steel, and the angle steel is detachably connected to the bottom of the shock absorber.

[0014] Preferably, the four shock absorbers are evenly distributed on the bottom of the shell, and the four shock absorbers are detachably connected to the shell.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. In the utility model, a heat dissipation mechanism is provided to dissipate heat inside and outside the battery box, the heat generated by the lithium battery body during operation is conducted out, and the temperature is monitored in real time by a temperature sensor. When the temperature is too high, air cooling and water cooling are used to surround the battery box to cool it down, so as to avoid the lithium battery body from exploding due to excessive temperature.

[0017] 2. In the present invention, a shock absorbing mechanism is provided to reduce vibration when shaking occurs at the installation location of the housing, thereby avoiding safety risks caused by vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the external heat dissipation component of the utility model;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of part of the semiconductor refrigeration sheet of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the fan blade part of the utility model;

[0022] Figure 5 It is a partial three-dimensional structural schematic diagram of the heat dissipation mechanism of the utility model.

[0023] In the figure: 1. outer shell; 2. battery box; 3. box cover; 4. negative terminal; 5. positive terminal; 6. temperature sensor; 7. dust screen; 8. shock absorber; 9. angle steel; 10. lithium battery body; 11. battery bracket; 12. thermal conductive silicone pad; 13. first heat sink group; 14. external water pump; 15. first liquid cooling pipe; 16. second liquid cooling pipe; 17. water tank; 18. sealing plug; 19. second heat sink group; 20. mounting frame; 21. motor; 22. fan blade; 23. semiconductor cooling plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0025] The utility model provides Figure 1-5A lithium battery with an explosion-proof structure shown in the figure comprises a shell 1, on which a heat dissipation mechanism and four shock absorbing mechanisms are arranged, the heat dissipation mechanism is arranged on the top of the four shock absorbing mechanisms, the heat dissipation mechanism comprises an inner heat dissipation component and an outer heat dissipation component, the inner heat dissipation component is arranged in the outer heat dissipation component, the outer heat dissipation component comprises a dustproof net 7, an external water pump 14, a first liquid cooling tube 15, a second liquid cooling tube 16, a water tank 17, a sealing plug 18, a second heat sink group 19, a mounting frame 20, a motor 21, a fan blade 22, and a semiconductor cooling sheet 23, the output end of the external water pump 14 is detachably connected to one end of the first liquid cooling tube 15, one end of the second liquid cooling tube 16 is detachably connected to the input end of the external water pump 14, the water tank 17 is detachably connected to the other end of the second liquid cooling tube 16, the other end of the first liquid cooling tube 15 is detachably connected to the water tank 17, and the semiconductor cooling sheet 23 is detachably connected to the inside of the water tank 17 The outer shell 1 is provided with a water inlet on the top, a sealing plug 18 is arranged in the water inlet, the sealing plug 18 is detachably connected to the water tank 17, the second heat sink group 19 is pasted on the rear end of the first liquid cooling tube 15, the second heat sink group 19 is detachably connected to the second liquid cooling tube 16, the motor 21 is fixedly connected to the front end of the mounting frame 20, a mounting hole is arranged at the front center of the fan blade 22, the output end of the motor 21 is arranged in the mounting hole, the fan blade 22 is detachably connected to the output end of the motor 21, the output end of the motor 21 is connected to the rear end of the mounting frame 20, the dustproof net 7 is detachably connected to the top of the mounting frame 20, the external water pump 14 is detachably connected to the left side of the inner wall of the outer shell 1, the water tank 17 is detachably connected to the left side of the inner wall of the outer shell 1, the water pump 14 is arranged at the front end of the water tank 17, the mounting frame 20 is fixedly connected to the front end of the inner wall of the outer shell 1, and the first liquid cooling tube 15 and the second liquid cooling tube 16 are both made of aluminum alloy. During the operation of the lithium battery, the heat of the battery box 2 is transmitted, and the first liquid cooling tube 15 and the second liquid cooling tube 16 made of aluminum alloy absorb the heat. When the temperature displayed on the display of the temperature sensor 6 is too high, the external water pump 14 is turned on to extract the coolant in the second liquid cooling tube 16 and transport it to the first liquid cooling tube 15. The first liquid cooling tube 15 and the second liquid cooling tube 16 are connected through the water tank 17 to form a water cycle. When the heat absorbed in the coolant passes through the water tank, the temperature of the water tank is cooled by the internal semiconductor refrigeration plate 23, so that the low-temperature coolant transfers the low temperature to the battery box 2 to cool it. At the same time, the running motor 21 drives the fan blades 22 to rotate, and the fan blades 22 blow air to the connection between the external water pump 14 and the liquid cooling tube to cool it, accelerate the air circulation in the shell 1 to further cool the coolant, and cool the heat generated during the operation of the external water pump 14. The aluminum alloy surrounds the battery box 2, enhances the overall robustness of the equipment, and reduces the possibility of splashing caused by explosion. In summary, the problem of explosion risk caused by high temperature of lithium batteries is solved.

[0026] The internal heat dissipation component includes a battery box 2, a box cover 3, a negative terminal 4, a positive terminal 5, a temperature sensor 6, a lithium battery body 10, a battery bracket 11, a first heat sink group 13 and two thermally conductive silicone pads 12. The battery box 2 is fixedly connected to the bottom of the inner wall of the shell 1, the battery bracket 11 is detachably connected to the inner wall of the battery box 2, the lithium battery body 10 is detachably connected to the inner wall of the battery bracket 11, the two thermally conductive silicone pads 12 are respectively attached to the left and right sides of the battery bracket 11, the first heat sink group 13 is attached to the rear end of the battery bracket 11, and the first heat sink group 13 is attached to the battery box 2 is detachably connected, the box cover 3 is detachably connected to the top of the battery box 2, the negative terminal 4 is fixedly connected to the left of the top of the box cover 3, the positive terminal 5 is fixedly connected to the right of the top of the box cover 3, the display end of the temperature sensor 6 is detachably connected to the middle of the top of the box cover 3, the box cover 3 is provided with a mounting hole, the sensing end of the temperature sensor 6 is arranged in the mounting hole, the first liquid cooling tube 15 is pasted on the upper outer wall of the battery box 2, the second liquid cooling tube 16 is pasted on the lower outer wall of the battery box 2, the water tank 17 is fixedly connected to the front left side of the battery box 2, and the dustproof net 7 is arranged on the outer wall of the housing 1 and the battery box 2. The lithium battery body 10 is fixed in the battery box 2 by the battery holder 11 to avoid the risk of the lithium battery body 10 shaking inside the battery box 2. The heat generated by the lithium battery body 10 is transferred to the thermal conductive silicone pads 12 and the first heat sink group 13 on both sides by the battery holder 11 made of aluminum alloy. The thermal conductive silicone pads 12 and the first heat sink group 13 transfer the heat to the outside of the battery box 2 to be processed by the external heat dissipation component. The temperature sensor 6 monitors the temperature inside the battery box 2 in real time and displays it on the display above the box cover 3. The surface of the battery box 2 is coated with flame retardant paint, wherein the internal structure and working principle of the temperature sensor 6, the battery box 2, the box cover 3, the negative electrode terminal 4, the positive electrode terminal 5 and the lithium battery body 10 are all prior art. In summary, the problem of heat dissipation difficulty caused by not destroying the integrity of the battery box structure and improving the explosion-proof function is solved.

[0027] The four shock absorbing mechanisms each include a shock absorber 8 and an angle steel 9. The angle steel 9 is detachably connected to the bottom of the shock absorber 8. The four shock absorbers 8 are evenly distributed at the bottom of the housing 1. The four shock absorbers 8 are detachably connected to the housing 1. Bolts are passed through the mounting holes of the angle steel 9 to be installed at the desired position. When the installation location shakes, the shock absorber 8 alleviates the vibration. In summary, the problem of explosion risk caused by shaking of the lithium battery body without shock absorbing measures is solved.

[0028] 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 lithium battery with an explosion-proof structure, characterized in that: It comprises a housing (1), on which a heat dissipation mechanism and four shock absorbing mechanisms are arranged, and the heat dissipation mechanism is arranged on top of the four shock absorbing mechanisms; The heat dissipation mechanism comprises an inner heat dissipation component and an outer heat dissipation component, wherein the inner heat dissipation component is arranged inside the outer heat dissipation component; The external heat dissipation component comprises a dustproof net (7), an external water pump (14), a first liquid cooling tube (15), a second liquid cooling tube (16), a water tank (17), a sealing plug (18), a second heat sink group (19), a mounting frame (20), a motor (21), a fan blade (22), and a semiconductor cooling sheet (23); the output end of the external water pump (14) is detachably connected to one end of the first liquid cooling tube (15); one end of the second liquid cooling tube (16) is detachably connected to the input end of the external water pump (14); the water tank (17) is detachably connected to the other end of the second liquid cooling tube (16); the other end of the first liquid cooling tube (15) is detachably connected to the water tank (17); the semiconductor cooling sheet (23) is detachably connected to the inner wall of the water tank (17); A water inlet is provided at the top of the water tank (17), the sealing plug (18) is arranged in the water inlet, the sealing plug (18) is detachably connected to the water tank (17), the second heat sink group (19) is pasted to the rear end of the first liquid cooling tube (15), the second heat sink group (19) is detachably connected to the second liquid cooling tube (16), the motor (21) is fixedly connected to the front end of the mounting frame (20), a mounting hole is provided at the center of the front end of the fan blade (22), the output end of the motor (21) is arranged in the mounting hole, the fan blade (22) is detachably connected to the output end of the motor (21), the output end of the motor (21) is connected to the rear end of the mounting frame (20), and the dustproof net (7) is detachably connected to the top of the mounting frame (20).

2. A lithium battery with an explosion-proof structure according to claim 1, characterized in that: The external water pump (14) is detachably connected to the left side of the inner wall of the outer shell (1), the water tank (17) is detachably connected to the left side of the inner wall of the outer shell (1), the water pump (14) is arranged at the front end of the water tank (17), and the mounting frame (20) is fixedly connected to the front end of the inner wall of the outer shell (1); The first liquid cooling tube (15) and the second liquid cooling tube (16) are both made of aluminum alloy.

3. The lithium battery with explosion-proof structure according to claim 1, characterized in that: The internal heat dissipation component comprises a battery box (2), a box cover (3), a negative electrode terminal (4), a positive electrode terminal (5), a temperature sensor (6), a lithium battery body (10), a battery bracket (11), a first heat sink group (13) and two thermally conductive silicone pads (12); the battery box (2) is fixedly connected to the bottom of the inner wall of the outer shell (1); the battery bracket (11) is detachably connected to the inner wall of the battery box (2); the lithium battery body (10) is detachably connected to the inner wall of the battery bracket (11); and the two thermally conductive silicone pads (12) are respectively attached to the left and right sides of the battery bracket (11). On both sides, the first heat sink group (13) is adhered to the rear end of the battery bracket (11), the first heat sink group (13) is detachably connected to the battery box (2), the box cover (3) is detachably connected to the top of the battery box (2), the negative electrode terminal (4) is fixedly connected to the left side of the top of the box cover (3), the positive electrode terminal (5) is fixedly connected to the right side of the top of the box cover (3), the display end of the temperature sensor (6) is detachably connected to the middle of the top of the box cover (3), the box cover (3) is provided with a mounting hole, and the sensing end of the temperature sensor (6) is arranged in the mounting hole.

4. A lithium battery with an explosion-proof structure according to claim 3, characterized in that: The first liquid cooling tube (15) is adhered to the upper outer wall of the battery box (2), the second liquid cooling tube (16) is adhered to the lower outer wall of the battery box (2), and the water tank (17) is fixedly connected to the front left side of the battery box (2).

5. The lithium battery with explosion-proof structure according to claim 3, characterized in that: The dustproof net (7) is arranged on the outer wall of the housing (1) and the battery box (2).

6. The lithium battery with explosion-proof structure according to claim 5, characterized in that: The four shock absorbing mechanisms each comprise a shock absorber (8) and an angle steel (9), wherein the angle steel (9) is detachably connected to the bottom of the shock absorber (8).

7. The lithium battery with explosion-proof structure according to claim 6, characterized in that: The four shock absorbers (8) are evenly distributed at the bottom of the shell (1), and the four shock absorbers (8) are all detachably connected to the shell (1).

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