A fireproof and explosion-proof lithium battery device used in fire-fighting equipment

Abstract

The present invention discloses a fireproof and explosion-proof lithium battery device applied to firefighting equipment, which relates to the technical field of lithium batteries, and comprises an explosion-proof shell and a mounting shell, wherein a lithium battery body is placed inside the mounting shell. In the device, the mounting shell where the lithium battery body is mounted and the explosion-proof shell are indirectly connected through two sets of first buffer mechanisms designed diagonally, and the two are not in direct contact. The first dampers and first springs arranged in four diagonally opposite directions can disperse and absorb energy more evenly. At the same time, this arrangement can provide damping in multiple directions, effectively resist vibrations and impacts from different angles, and increase the stability of the lithium battery body. Moreover, the design of the limiting mechanism further ensures that the lithium battery body will not collide inside the explosion-proof shell during shaking, effectively avoiding the problem that the lithium battery is easily damaged when the firefighting equipment using the lithium battery is shaken, and improving the use effect of the fireproof and explosion-proof lithium battery.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a fireproof and explosion-proof lithium battery device used in fire-fighting equipment. Background Art

[0002] Some fire-fighting equipment needs to be installed with lithium batteries. However, due to the rescue needs of firefighting work, the temperature of the fire scene is very high and may be exposed to the fire source. Lithium batteries are prone to combustion and explosion in the high temperature environment of the fire, which brings great difficulties to fire fighting and rescue and on-site disposal, and is not conducive to the safe development of firefighting work.

[0003] Existing, such as a Chinese patent (patent publication number: CN114188654A), discloses a fireproof and explosion-proof lithium battery device used in fire-fighting equipment, including a shell, a top cover and a battery cell; a group of battery cells are evenly distributed in the shell; an isolation ring is connected between adjacent battery cells, and a No. 1 contact and a No. 2 contact are provided in the isolation ring, and the No. 1 contact and the No. 2 contact are respectively connected to the side wall of the battery cell on the corresponding side; the No. 2 contact is connected to the positive electrode of the battery cell through a wire, and the No. 1 contact is connected in series with the negative electrode of the battery cell through the No. 1 wire, a buzzer and the No. 2 wire; this technical solution reduces the number of overhauls of the shell by driving the No. 1 contact and the No. 2 contact to contact and trigger the buzzer to sound an alarm when the battery cell is severely bulged, while increasing the timeliness of battery maintenance, ensuring that the battery is in a normal working state, and ensuring the safety of the battery during use.

[0004] Although the above technical solution uses a buzzer to sound an alarm, reduces the number of shell inspections, increases battery maintenance timeliness, ensures that the battery is in a normal working state, and ensures battery safety during use, the current lithium battery device has the following defects during use:

[0005] 1. In actual use, the existing fireproof and explosion-proof lithium battery device needs to be carried and moved quickly during firefighting, which is easy to cause vibration due to external forces such as shaking during carrying, resulting in internal damage, and the wire connection is also easy to break, affecting the service life of the lithium battery, thereby reducing the use effect of the fireproof and explosion-proof lithium battery device;

[0006] 2. The existing fireproof and explosion-proof lithium battery device is prone to falling during actual firefighting use, and there is no buffer protection on the outside, which is not conducive to the protection of the lithium battery after falling, thereby reducing the use effect of the fireproof and explosion-proof lithium battery device.

[0007] Therefore, we propose a fireproof and explosion-proof lithium battery device for use in fire-fighting equipment in order to solve the problems raised in the above background technology. Summary of the invention

[0008] The purpose of the present invention is to provide a fireproof and explosion-proof lithium battery device for use in fire-fighting equipment to solve the problems raised by the above-mentioned background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fireproof and explosion-proof lithium battery device for fire-fighting equipment, comprising an explosion-proof shell and a mounting shell, a lithium battery body is placed inside the mounting shell, four first buffer mechanisms are arranged between the front and rear outer surfaces of the mounting shell and the front and rear inner walls of the explosion-proof shell, second buffer mechanisms are symmetrically arranged near the bottom corners of the front and rear outer surfaces of the explosion-proof shell, limiting mechanisms are arranged at the front and rear outer surfaces of the mounting shell and the centers of the front and rear inner walls of the explosion-proof shell, a pressure relief mechanism is arranged on the rear surface of the explosion-proof shell, the number of the first buffer mechanisms is set to eight, and the four first buffer mechanisms The first buffer mechanism is structured as a group, and the two groups of the first buffer mechanisms are equidistantly arranged on the front and rear outer surfaces of the explosion-proof shell and are in an inclined state. The first buffer mechanism includes a first mounting plate, the outer surface of the first mounting plate is fixedly connected to a first rotating seat, a first rotating block is rotatably connected between the inner surface walls of the first rotating seat, a first damper is installed on the outer surface of the first rotating block, one end of the first damper is fixedly connected to a second rotating block, the outer surface of the second rotating block is rotatably connected to a second rotating seat, the outer surface of the second rotating seat is fixedly connected to a second mounting plate, and a first spring is fixedly connected between the outer surfaces of the first rotating block and the second rotating block.

[0010] Preferably, the first mounting plate is fixedly connected to the front and rear inner walls of the explosion-proof shell near the corners, the second mounting plate is fixedly connected to the front and rear outer surfaces of the mounting shell near the center, and the first damper is arranged obliquely.

[0011] Preferably, thermally conductive silicone is filled between the outer surface of the lithium battery body and the inner wall of the mounting shell, a power plug is provided on the top of the lithium battery body, a mounting cover is fixed on the top of the mounting shell by bolts, and the top end of the power plug passes through the outer surface of the mounting cover.

[0012] Preferably, an explosion-proof cover is installed on the top of the explosion-proof shell by bolts, a handle is connected to the top center of the explosion-proof cover, an external plug is installed on the top of the explosion-proof cover, a connecting plug is electrically connected to the external plug through a line at the bottom of the explosion-proof cover, the connecting plug is electrically connected to the power supply plug, shoulder straps are installed on the outer surfaces of both sides of the explosion-proof shell, and a backrest is bonded to the front surface of the explosion-proof shell.

[0013] Preferably, the number of the second buffer mechanisms is set to four, and the four second buffer mechanisms are respectively arranged on the front and rear outer surfaces of the explosion-proof shell near the corners, and the second buffer mechanism includes a third rotating seat, and the third rotating seat is fixedly connected to the outer surface of the explosion-proof shell near the bottom, and the inner surface wall bracket of the third rotating seat is rotatably connected to a rotating column, and the top of the rotating column near the outside is fixedly connected to a fourth rotating seat.

[0014] Preferably, a third rotating block is rotatably connected between the inner surface walls of the fourth rotating seat, a second damper is installed on the top of the third rotating block, a fourth rotating block is installed on the top of the second damper, a fifth rotating seat is rotatably connected to the outer surface of the fourth rotating block, and a second spring is fixedly connected between the outer surfaces of the third rotating block and the fourth rotating block.

[0015] Preferably, the fifth rotating seat is fixedly connected to the outer surface of the explosion-proof shell and is located above the third rotating seat, the outer end of the rotating column is fixedly connected to a diagonal support rod, the diagonal support rod is tilted downward and a rubber ball is installed at the bottom, and the second damper is tilted.

[0016] Preferably, the two limiting mechanisms each include a positioning column, and the two positioning columns are respectively fixedly connected to the centers of the front and rear outer surfaces of the mounting shell, the outer surfaces of the positioning columns are sleeved with rubber rings, and the outer surface of the rubber rings are sleeved with circular sleeves, and the two circular sleeves are respectively fixedly connected to the centers of the front and rear inner walls of the explosion-proof shell.

[0017] Preferably, the pressure relief mechanism is composed of a pressure relief tank, a pressure relief pipe and a pressure relief valve. The pressure relief valve is installed on an outer surface of one side of the explosion-proof shell and one end of the pressure relief valve is connected to the inside of the explosion-proof shell.

[0018] Preferably, the pressure relief tank is installed on the rear surface of the explosion-proof shell, and both ends of the pressure relief pipe are respectively connected to the pressure relief valve and the pressure relief tank for connecting the pressure relief tank and the explosion-proof shell.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When the present invention is used, the mounting shell for mounting the lithium battery body in the device and the explosion-proof shell are indirectly connected through two sets of first buffer mechanisms designed diagonally, and the two are not in direct contact. The first dampers and first springs arranged in four diagonal directions can disperse and absorb energy more evenly. At the same time, this arrangement can provide damping in multiple directions, effectively resist vibrations and impacts from different angles, increase the stability of the lithium battery body, and the design of the limiting mechanism further ensures that the lithium battery body will not collide inside the explosion-proof shell during shaking, effectively avoiding the problem that the lithium battery is easily damaged when the fire-fighting equipment using the lithium battery is shaken, thereby improving the use effect of the fire-proof and explosion-proof lithium battery.

[0021] 2. When the present invention is used, when the device falls during firefighting, the four rubber balls in the device will first touch the bottom to play a certain buffering effect, and the impact force will be transmitted upward to the diagonal support rod. At this time, the rotating column integrated with the diagonal support rod will flip upward, and the fourth rotating seat on the top of the rotating column will violently impact the second damper and make its outer end flip upward. During this process, the second damper and the second spring will buffer and absorb energy through expansion and contraction, thereby reducing the impact force generated after the device falls, improving the protection of the device, and ensuring the use effect and reliability of the fireproof and explosion-proof lithium battery device.

[0022] 3. When the present invention is used, when carrying the device, the user can hold the handle to carry it, or carry it on the back through a shoulder strap. At the same time, the design of the backrest effectively reduces the impact damage of the portable explosion-proof shell on the back of the firefighter. The carrying method is flexible and the use effect is good. When the lithium battery body burns and explodes, the air pressure inside the explosion-proof shell will increase instantly. At this time, the pressure relief valve is triggered to open, so that the explosion-proof shell and the pressure relief tank are connected through the pressure relief pipe. At this time, the pressure inside the explosion-proof shell will be reduced, avoiding the accident caused by the direct explosion of the device, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a fireproof and explosion-proof lithium battery device used in fire-fighting equipment according to the present invention;

[0024] Figure 2 An expanded view of a fireproof and explosion-proof lithium battery device used in fire-fighting equipment according to the present invention;

[0025] Figure 3 A cross-sectional view of a fireproof and explosion-proof lithium battery device used in fire-fighting equipment according to the present invention;

[0026] Figure 4 A schematic diagram of the explosion-proof shell structure of a fireproof and explosion-proof lithium battery device used in fire-fighting equipment according to the present invention;

[0027] Figure 5This is a schematic diagram of the structure of an installation shell of a fireproof and explosion-proof lithium battery device used in fire-fighting equipment according to the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of a second buffer mechanism of a fireproof and explosion-proof lithium battery device applied to fire-fighting equipment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of a limit mechanism of a fireproof and explosion-proof lithium battery device used in fire-fighting equipment of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of a pressure relief mechanism of a fireproof and explosion-proof lithium battery device used in fire-fighting equipment of the present invention;

[0031] Fig. 9 The present invention is a schematic structural diagram of a first buffer mechanism of a fireproof and explosion-proof lithium battery device used in fire-fighting equipment.

[0032] In the figure: 1. explosion-proof shell; 11. connecting plug; 12. shoulder strap; 13. backrest; 14. explosion-proof cover; 15. handle; 16. external plug; 2. mounting shell; 21. thermal conductive silica gel; 22. lithium battery body; 23. mounting cover; 24. power supply plug; 3. first buffer mechanism; 301. first mounting plate; 302. first rotating seat; 303. first rotating block; 304. first damper; 305. first spring; 306. second rotating block; 307. second rotating seat; 308. The second mounting plate; 4. limiting mechanism; 401. positioning column; 402. rubber ring; 403. circular sleeve; 5. pressure relief mechanism; 501. pressure relief valve; 502. pressure relief pipe; 503. pressure relief tank; 6. second buffer mechanism; 601. third rotating seat; 602. rotating column; 603. fourth rotating seat; 604. third rotating block; 605. second damper; 606. second spring; 607. fourth rotating block; 608. fifth rotating seat; 609. diagonal support rod; 610. rubber ball. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1-Figure 9As shown, the present invention provides a technical solution: a fireproof and explosion-proof lithium battery device used in fire-fighting equipment, comprising an explosion-proof shell 1 and a mounting shell 2, a lithium battery body 22 is placed inside the mounting shell 2, four first buffer mechanisms 3 are arranged between the front and rear outer surfaces of the mounting shell 2 and the front and rear inner surface walls of the explosion-proof shell 1, second buffer mechanisms 6 are symmetrically arranged near the bottom corners of the front and rear outer surfaces of the explosion-proof shell 1, limiting mechanisms 4 are arranged at the front and rear outer surfaces of the mounting shell 2 and the centers of the front and rear inner surface walls of the explosion-proof shell 1, a pressure relief mechanism 5 is arranged on the rear surface of the explosion-proof shell 1, and the first buffer mechanism 3 is arranged between the front and rear outer surfaces of the mounting shell 2 and the front and rear inner surface walls of the explosion-proof shell 1. The number of mechanisms 3 is set to eight, and four first buffer mechanisms 3 form a group. The two groups of first buffer mechanisms 3 are respectively equidistantly arranged on the outer surfaces of the front and rear sides of the explosion-proof shell 1 and are in an inclined state. The first buffer mechanism 3 includes a first mounting plate 301, the outer surface of the first mounting plate 301 is fixedly connected to a first rotating seat 302, and a first rotating block 303 is rotatably connected between the inner surface walls of the first rotating seat 302. A first damper 304 is installed on the outer surface of the first rotating block 303, and one end of the first damper 304 is fixedly connected to a second rotating block 306. The outer surface of the second rotating block 306 rotates A second rotating seat 307 is connected, and a second mounting plate 308 is fixedly connected to the outer surface of the second rotating seat 307. A first spring 305 is fixedly connected between the outer surfaces of the first rotating block 303 and the second rotating block 306. The first mounting plate 301 is fixedly connected to the inner surface wall of the front and rear sides of the explosion-proof shell 1 near the corner, and the second mounting plate 308 is fixedly connected to the outer surface of the front and rear sides of the mounting shell 2 near the center. The first damper 304 is inclined. The outer surface of the lithium battery body 22 and the inner surface wall of the mounting shell 2 are filled with thermal conductive silica gel 21. The top of the lithium battery body 22 is matched with A power supply plug 24 is provided, a mounting cover 23 is fixedly installed on the top of the mounting shell 2 by bolts, the top of the power supply plug 24 passes through the outer surface of the mounting cover 23, an explosion-proof cover 14 is installed on the top of the explosion-proof shell 1 by bolts, a handle 15 is connected to the top center of the explosion-proof cover 14, an external plug 16 is installed on the top of the explosion-proof cover 14, and a connecting plug 11 is electrically connected to the external plug 16 at the bottom of the explosion-proof cover 14 through a line, and the connecting plug 11 and the power supply plug 24 are electrically connected, straps 12 are installed on the outer surfaces of both sides of the explosion-proof shell 1, and a backrest 13 is bonded to the front surface of the explosion-proof shell 1.

[0035] In this embodiment, when in use, the lithium battery body 22 is placed inside the mounting shell 2, and then filled with thermal conductive silica gel 21 to conduct heat, and has insulation and a certain buffering effect. Subsequently, the mounting cover 23 is installed to the top of the mounting shell 2 for sealing using bolts. The bottom of the mounting shell 2 and the bottom of the outer explosion-proof shell 1 are at a certain distance. When the device is carried for firefighting and shaking occurs, as the internal lithium battery body 22 shakes, the distance and orientation between the first mounting plate 301 fixed on the surface of the mounting shell 2 and the second mounting plate 308 fixed on the inner wall of the explosion-proof shell 1 will change with the shaking. At this time, the first mounting plate 301 and the second mounting plate 308 will squeeze the first damper 304 in the shaking direction. At this time, the first damper 304 and the first spring 305 will play a buffering and energy-absorbing effect by telescoping, and the first dampers 304 and the first springs 305 arranged in four diagonal directions can disperse and absorb energy more evenly. At the same time, this arrangement can provide damping effects in multiple directions, effectively resist vibrations and impacts from different angles, and increase the stability of the lithium battery body 22. At the same time, during the buffering process, the first rotating block 303 and the second rotating block 306 will adaptively rotate inside the first rotating seat 302 and the second rotating seat 307 respectively, so that the first damper 304 can be effectively extended and retracted. This design effectively avoids the problem that the lithium battery is easily damaged when the fire-fighting equipment using lithium batteries is shaken, and improves the use effect of the fire-proof and explosion-proof lithium battery. At the same time, when carrying this device, you can hold the handle 15 to carry it, or you can carry it through the shoulder strap 12. At the same time, the design of the backrest 13 effectively reduces the impact damage of the portable explosion-proof shell 1 on the back of the firefighter. The carrying method is flexible and the use effect is good. The explosion-proof shell 1 is made of 316 stainless steel material, which has good high temperature resistance and impact resistance, is convenient to use in the fire scene, and ensures the safety of the lithium battery body 22. The explosion-proof cover 14 is installed on the top of the explosion-proof shell 1 by bolts to seal the inside. During installation, it is necessary to first connect the connecting plug 11 and the power plug 24 of the lithium battery body 22. After the installation is completed, the fire-fighting equipment plug can be directly plugged into the external plug 16 for power supply.

[0036] Embodiment 2: Figure 1-Figure 9As shown, the number of the second buffer mechanisms 6 is set to four, and the four second buffer mechanisms 6 are respectively arranged on the outer surfaces of the front and rear sides of the explosion-proof shell 1 near the corners. The second buffer mechanism 6 includes a third rotating seat 601, and the third rotating seat 601 is fixedly connected to the outer surface of the explosion-proof shell 1 near the bottom. The inner surface wall bracket of the third rotating seat 601 is rotatably connected to a rotating column 602, and the top of the rotating column 602 is fixedly connected to a fourth rotating seat 603 near the outer side. The inner surface walls of the fourth rotating seat 603 are rotatably connected to a third rotating block 604, and the top of the third rotating block 604 is installed There is a second damper 605, a fourth rotating block 607 is installed on the top of the second damper 605, the outer surface of the fourth rotating block 607 is rotatably connected to the fifth rotating seat 608, a second spring 606 is fixedly connected between the outer surfaces of the third rotating block 604 and the fourth rotating block 607, the fifth rotating seat 608 is fixedly connected to the outer surface of the explosion-proof shell 1 and is located above the third rotating seat 601, the outer end of the rotating column 602 is fixedly connected to a diagonal support rod 609, the diagonal support rod 609 is tilted downward and a rubber ball 610 is installed at the bottom, and the second damper 605 is tilted.

[0037] In this embodiment, when the device falls during firefighting, since the bottom of the explosion-proof shell 1 is facing downward during carrying and the device is close to the ground, the bottom of the device will fall to the ground first. At this time, the four rubber balls 610 in the device will first touch the bottom to play a certain buffering effect, and the impact force will be transmitted upward to the diagonal support rod 609. At this time, the rotating column 602 integrated with the diagonal support rod 609 will flip upward, and the fourth rotating seat 603 on the top of the rotating column 602 will violently impact the second damper 605 and make its outer end flip upward. In this process The second damper 605 and the second spring 606 will absorb energy through buffering by expansion and contraction, thereby reducing the impact force generated after the device falls, improving the protection of the device, and ensuring the use effect and reliability of the fire-proof and explosion-proof lithium battery device. The design of the third rotating seat 601 allows the rotating column 602 to rotate up and down, and the fifth rotating seat 608 and the fourth rotating block 607 cooperate to allow the front end of the second damper 605 to rotate up and down. The fourth rotating seat 603 and the third rotating block 604 cooperate to allow the rear end of the second damper 605 to rotate up and down.

[0038] Embodiment 3: Figure 1-Figure 9As shown, the two limiting mechanisms 4 each include a positioning column 401, and the two positioning columns 401 are respectively fixedly connected to the centers of the front and rear outer surfaces of the mounting shell 2, the outer surface of the positioning column 401 is sleeved with a rubber ring 402, and the outer surface of the rubber ring 402 is sleeved with a circular sleeve 403, and the two circular sleeves 403 are respectively fixedly connected to the centers of the front and rear inner surface walls of the explosion-proof shell 1, and the pressure relief mechanism 5 is composed of a pressure relief tank 503, a pressure relief pipe 502 and a pressure relief valve 501, the pressure relief valve 501 is installed on the outer surface of one side of the explosion-proof shell 1 and one end of the pressure relief valve 501 is connected to the inside of the explosion-proof shell 1, the pressure relief tank 503 is installed on the rear surface of the explosion-proof shell 1, and the two ends of the pressure relief pipe 502 are respectively connected to the pressure relief valve 501 and the pressure relief tank 503, so as to connect the pressure relief tank 503 and the explosion-proof shell 1.

[0039] In the present embodiment, during use, when the mounting shell 2 and the lithium battery body 22 are shaking, the positioning posts 401 on the front and rear sides of the mounting shell 2 will always be located inside the circular sleeve 403 on the inner wall of the explosion-proof shell 1, thereby limiting the shaking range of the mounting shell 2 and avoiding collision between the mounting shell 2 and the explosion-proof shell 1. At the same time, the rubber ring 402 arranged between the positioning posts 401 and the circular sleeve 403 has a buffering effect, thereby further improving the protection effect of the present device. When the lithium battery body 22 burns and explodes, the internal air pressure of the explosion-proof shell 1 will increase instantly. At this time, the pressure relief valve 501 is triggered to open, so that the explosion-proof shell 1 and the pressure relief tank 503 are connected through the pressure relief pipe 502. At this time, the pressure inside the explosion-proof shell 1 will be reduced, thereby avoiding accidents caused by the direct explosion of the device, thereby improving the safety of the present device.

[0040] The effect and working principle of the whole mechanism are as follows: when the device is carried for firefighting and shaking occurs, as the lithium battery body 22 inside shakes, the distance and orientation between the first mounting plate 301 fixed on the surface of the mounting shell 2 and the second mounting plate 308 fixed on the inner wall of the explosion-proof shell 1 will change with the shaking. At this time, the first mounting plate 301 and the second mounting plate 308 will squeeze the first damper 304 in the shaking direction. At this time, the first damper 304 and the first spring 305 will play a buffering and energy absorption effect by expansion and contraction, and the first dampers 304 and the first springs 305 arranged in four diagonal directions can disperse and absorb energy more evenly. At the same time, this arrangement can provide damping in multiple directions, effectively resisting the impact from Vibrations and shocks at different angles increase the stability of the lithium battery body 22. At the same time, during the buffering process, the first rotating block 303 and the second rotating block 306 will adaptively rotate inside the first rotating seat 302 and the second rotating seat 307 respectively, so that the first damper 304 can effectively expand and contract. This design effectively avoids the problem that the lithium battery is easily damaged when the fire-fighting equipment using lithium batteries is shaken, and improves the use effect of fire-proof and explosion-proof lithium batteries. In addition, when the mounting shell 2 and the lithium battery body 22 are shaking, the positioning columns 401 on the front and rear sides of the mounting shell 2 will always be on the inner side of the circular sleeve 403 on the inner wall of the explosion-proof shell 1, which limits the shaking range of the mounting shell 2 and avoids collision between the mounting shell 2 and the explosion-proof shell 1. At the same time, the positioning columns The rubber ring 402 arranged between 401 and the circular sleeve 403 has a buffering effect, thereby further improving the protective effect of the device. When the device falls during firefighting, since the bottom of the explosion-proof shell 1 is facing downward during carrying and the device is close to the ground, the bottom of the device will fall to the ground first when it falls to the ground. At this time, the four rubber balls 610 in the device will first touch the bottom and have a certain buffering effect, and the impact force will be transmitted upward to the diagonal support rod 609. At this time, the rotating column 602 integrated with the diagonal support rod 609 will flip upward, and the fourth rotating seat 603 on the top of the rotating column 602 will violently impact the second damper 605 and make its outer end flip upward. In this process, the second damper 605 and the second spring 606 will absorb energy through expansion and contraction. The impact force generated after the device falls is reduced, the protection of the device is improved, and the use effect and reliability of the fireproof and explosion-proof lithium battery device are ensured. In addition, when the lithium battery body 22 burns and explodes, the air pressure inside the explosion-proof shell 1 will increase instantly. At this time, the pressure relief valve 501 is triggered to open, so that the explosion-proof shell 1 and the pressure relief tank 503 are connected through the pressure relief pipe 502. At this time, the pressure inside the explosion-proof shell 1 will be reduced, avoiding the accident caused by the direct explosion of the device, thereby improving the safety of the device. At the same time, when carrying the device, the handle 15 can be held to carry it, or it can be carried by the shoulder strap 12. At the same time, the design of the backrest 13 effectively reduces the impact damage of the portable explosion-proof shell 1 on the back of the firefighter, and the carrying method is flexible and the use effect is good.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to 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 fireproof and explosion-proof lithium battery device for use in firefighting equipment, comprising an explosion-proof housing (1) and a mounting housing (2), characterized in that: A lithium battery body (22) is placed inside the mounting shell (2); four first buffer mechanisms (3) are arranged between the front and rear outer surfaces of the mounting shell (2) and the front and rear inner walls of the explosion-proof shell (1); second buffer mechanisms (6) are symmetrically arranged near the bottom corners of the front and rear outer surfaces of the explosion-proof shell (1); limiting mechanisms (4) are arranged at the center of the front and rear outer surfaces of the mounting shell (2) and the front and rear inner walls of the explosion-proof shell (1); and a pressure relief mechanism (5) is arranged on the rear surface of the explosion-proof shell (1); The number of the first buffer mechanisms (3) is set to eight, and four of the first buffer mechanisms (3) form a group. The two groups of the first buffer mechanisms (3) are respectively arranged equidistantly on the outer surfaces of the front and rear sides of the explosion-proof shell (1) and are in an inclined state. The first buffer mechanism (3) comprises a first mounting plate (301). The outer surface of the first mounting plate (301) is fixedly connected to a first rotating seat (302). A first rotating block (303) is rotatably connected between the inner surface walls of the first rotating seat (302). A first damper (304) is mounted on the outer surface of the first rotating block (303). One end of the first damper (304) is fixedly connected to a second rotating block (306). The outer surface of the second rotating block (306) is rotatably connected to a second rotating seat (307). The outer surface of the second rotating seat (307) is fixedly connected to a second mounting plate (308). A first spring (305) is fixedly connected between the outer surfaces of the first rotating block (303) and the second rotating block (306). The first mounting plate (301) is fixedly connected to the front and rear inner walls of the explosion-proof housing (1) near the corners, the second mounting plate (308) is fixedly connected to the front and rear outer surfaces of the mounting housing (2) near the center, and the first damper (304) is arranged in an inclined manner; A heat-conductive silica gel (21) is filled between the outer surface of the lithium battery body (22) and the inner surface wall of the mounting shell (2); a power plug (24) is provided on the top of the lithium battery body (22); a mounting cover (23) is fixedly mounted on the top of the mounting shell (2) by bolts; and the top end of the power plug (24) penetrates the outer surface of the mounting cover (23); An explosion-proof cover (14) is installed on the top of the explosion-proof shell (1) by bolts, a handle (15) is connected to the center of the top of the explosion-proof cover (14), an external plug (16) is installed on the top of the explosion-proof cover (14), a connecting plug (11) is electrically connected to the external plug (16) through a line at the bottom of the explosion-proof cover (14), the connecting plug (11) and the power supply plug (24) are electrically connected, shoulder straps (12) are installed on the outer surfaces of both sides of the explosion-proof shell (1), and a backrest (13) is bonded to the front surface of the explosion-proof shell (1); The number of the second buffer mechanisms (6) is set to four, and the four second buffer mechanisms (6) are respectively arranged at positions near the corners of the front and rear outer surfaces of the explosion-proof shell (1), and the second buffer mechanism (6) comprises a third rotating seat (601), and the third rotating seat (601) is fixedly connected to a position near the bottom of the outer surface of the explosion-proof shell (1), and the inner surface wall bracket of the third rotating seat (601) is rotatably connected to a rotating column (602), and the top of the rotating column (602) is fixedly connected to a fourth rotating seat (603) near the outer side; A third rotating block (604) is rotatably connected between the inner surface walls of the fourth rotating seat (603); a second damper (605) is installed on the top of the third rotating block (604); a fourth rotating block (607) is installed on the top of the second damper (605); a fifth rotating seat (608) is rotatably connected to the outer surface of the fourth rotating block (607); and a second spring (606) is fixedly connected between the outer surfaces of the third rotating block (604) and the fourth rotating block (607); The fifth rotating seat (608) is fixedly connected to the outer surface of the explosion-proof shell (1) and is located above the third rotating seat (601). The outer end of the rotating column (602) is fixedly connected to an inclined support rod (609). The inclined support rod (609) is arranged to be tilted downward and a rubber ball (610) is installed at the bottom end. The second damper (605) is arranged to be tilted.

2. The fireproof and explosion-proof lithium battery device for firefighting equipment according to claim 1, characterized in that: The two limiting mechanisms (4) each comprise a positioning column (401), the two positioning columns (401) being respectively fixedly connected to the centers of the front and rear outer surfaces of the mounting shell (2), the outer surfaces of the positioning columns (401) being sleeved with a rubber ring (402), the outer surface of the rubber ring (402) being sleeved with a circular sleeve (403), the two circular sleeves (403) being respectively fixedly connected to the centers of the front and rear inner walls of the explosion-proof shell (1).

3. The fireproof and explosion-proof lithium battery device for firefighting equipment according to claim 2, characterized in that: The pressure relief mechanism (5) is composed of a pressure relief tank (503), a pressure relief pipe (502) and a pressure relief valve (501); the pressure relief valve (501) is installed on an outer surface of one side of the explosion-proof shell (1), and one end of the pressure relief valve (501) is in communication with the interior of the explosion-proof shell (1).

4. The fireproof and explosion-proof lithium battery device for firefighting equipment according to claim 3, characterized in that: The pressure relief tank (503) is installed on the rear surface of the explosion-proof shell (1), and the two ends of the pressure relief pipe (502) are respectively connected to the pressure relief valve (501) and the pressure relief tank (503), so as to connect the pressure relief tank (503) and the explosion-proof shell (1).

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