Combined lithium battery

Abstract

The invention discloses a combined lithium battery which comprises an installation box body, an installation cover is fixedly installed on the top face of the installation box body through bolts, two power connection columns are arranged on the top face of the installation cover, a circuit board is fixedly installed on the bottom face of the installation cover, and a fire extinguishing assembly is installed in the installation box body and comprises an installation frame. A plurality of discharging assemblies are symmetrically mounted on the front portion and the rear portion of the mounting frame at equal intervals, each discharging assembly comprises a mounting cylinder, lithium battery bodies are fixedly mounted in the mounting cylinders, and the multiple lithium battery bodies are electrically connected with the circuit board through wires. According to the system, fire spreading and chain reaction are effectively prevented, meanwhile, the safety of the system is further enhanced through the power-off design and the gas circuit closing function, it is ensured that the system can respond quickly and control the fire behavior in the complex environment, and comprehensive protection is provided for the lithium battery system.

Description

Technical Field

[0001] The present invention relates to the field of lithium batteries, in particular to a combined lithium battery. Background Art

[0002] With the continuous growth of global energy demand and the increasing prominence of environmental issues, lithium batteries, as an efficient and environmentally friendly energy storage device, have been widely used in electric vehicles, portable electronic devices, energy storage systems and other fields. Lithium batteries have the advantages of high energy density, long cycle life and low self-discharge rate, and have become the mainstream choice of current energy storage technology. However, traditional lithium batteries still have certain limitations in terms of energy density, safety and cost, making it difficult to meet the growing market demand.

[0003] Currently, lithium batteries on the market are mainly designed with a single positive electrode material (such as lithium iron phosphate, ternary materials, etc.) and a negative electrode material (such as graphite, silicon-carbon composite materials, etc.). Although this single material system performs well in certain performance indicators, it is often difficult to take into account multiple requirements such as energy density, power density, cycle life and safety. For example, although ternary material lithium batteries have high energy density, they have great safety risks in high temperature environments; while lithium iron phosphate batteries have better safety, their energy density is relatively low and cannot meet the needs of long-range electric vehicles.

[0004] At the same time, when multiple lithium batteries are combined together, if one of the lithium batteries thermally runs away and causes a fire, it will trigger a series of exothermic reactions, causing the temperature of the surrounding lithium batteries to rise further sharply, and eventually cause a fire or explosion, which is not very safe.

[0005] After searching, it was found that the prior art publication number is CN220914338U, which discloses a combined lithium battery device, including an outer shell, an inner shell and a protective cover plate, wherein an inner shell is provided inside the outer shell, and a protective cover plate is provided on the upper end of the outer shell, wherein protective holes are evenly provided on the outer shell, and heat dissipation holes are evenly provided on the inner shell, and the protective holes and heat dissipation holes are inclined to each other, and placement cavities are evenly provided inside the inner shell, and the battery blocks are slidably clamped in the placement cavity, and a buffer pad is fixedly installed in the placement cavity and between the inner shell and the outer shell, and a protective cover plate is clamped on the upper end of the outer shell, and a fan is provided on the protective cover plate. This scheme improves the waterproof performance of the device while ensuring the heat dissipation performance of the device by opening heat dissipation holes and protective holes that are inclined to each other on the shell.

[0006] Therefore, based on the above search and in combination with existing technologies, the existing combined lithium battery device cannot take timely fire extinguishing measures when the lithium battery catches fire, is not safe, and has insufficient market adaptability. Summary of the Invention

[0007] The object of the present invention is to provide a combined lithium battery to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solution: it includes an installation box body, a mounting cover is fixedly installed on the top surface of the installation box body by bolts, two power connection posts are provided on the top surface of the installation cover, a circuit board is fixedly installed on the bottom surface of the installation cover, a fire extinguishing assembly is installed inside the installation box body, the fire extinguishing assembly includes a mounting frame, and a plurality of unloading assemblies are symmetrically and equidistantly installed on the mounting frame in the front and back. The unloading assembly includes a mounting cylinder, and a lithium battery body is fixedly installed in the mounting cylinder, and the plurality of lithium battery bodies are electrically connected to the circuit board through wires.

[0009] As a further solution of the present invention, several groups of extended lower support arms are equidistantly provided on the front and rear end faces of the mounting frame, and several groups of unloading components are respectively installed on the top surfaces of the several extended lower support arms. The unloading components include a pushing frame and a mounting tube. An arc groove is provided on the front end face of the pushing frame, and the outer wall of the mounting tube abuts against the arc groove.

[0010] As a further solution of the present invention, a lithium battery body is installed in the installation cylinder, an elastic base is installed on the bottom surface of the installation cylinder, and the elastic base is rotatably installed on the top surface of the end of the extended lower support arm.

[0011] As a further solution of the present invention, a number of discharge ports are equidistantly provided on the front and rear walls of the installation box body, and opening and closing plates are hinged on the tops of the several discharge ports. The several opening and closing plates respectively correspond to the positions of several groups of unloading components, and the end faces of the several opening and closing plates close to the unloading components are bonded with extrusion plates, and the end faces of the extrusion plates away from the clamping plates are in contact with the outer wall of the installation tube.

[0012] As a further solution of the present invention, the bottom ends of several opening and closing plates are connected to connecting ropes, and installation grooves are opened inside several extended lower arms. The end of the connecting rope away from the closing plate passes through the installation groove and enters the installation tube and is clamped and fixed between the rubber sleeve and the lithium battery body.

[0013] As a further solution of the present invention, a trigger assembly is installed in the mounting groove, and the upper end of the trigger assembly is threadedly connected to the gas cylinder. The trigger assembly includes a trigger tube, and a movable column is slidably installed in the rear end of the trigger tube. The movable column is located directly below the gas cylinder, and a pointed cone is provided on the top surface of the movable column. An inclined surface is provided on the outer wall of the movable column. A piston is slidably connected to the inner wall of the trigger tube, and a stretching rod is provided on the front end surface of the piston. The stretching rod passes through the front end surface of the trigger tube and is connected to the connecting rope.

[0014] As a further solution of the present invention, a spring is sandwiched between the front end face of the piston and the inner wall of the trigger tube, a trigger rod is provided on the rear end face of the piston, an air outlet pipe is provided on the outer wall of the trigger tube, the air outlet pipe is connected to the bottom surface of the pushing frame, an air delivery groove is provided inside the pushing frame, and an air hole for exhaust is provided on the outer wall of the arc-shaped groove.

[0015] As a further solution of the present invention, the fire extinguishing assembly also includes a storage box, which is fixedly installed in the mounting frame and filled with perfluorohexanone. Several support tubes are equidistantly installed on the top surface of the storage box, and the outer wall of the support tube is provided with an extended upper support arm.

[0016] As a further solution of the present invention, a power connection piece 1 is installed on both the top and bottom surfaces of the extended upper support arm, and the front and rear ends of the two power connection pieces 1 are provided with wiring slots and power connection card slots. The front end surface of the extended upper support arm is fixedly installed with a mounting end plate, and the top and bottom surfaces of the end of the mounting end plate are rotatably installed with power connection pieces 2. The rear ends of the two power connection pieces 2 are respectively slidably abutted against the two power connection card slots, and the positive and negative poles of the lithium battery body are respectively connected to the positive electrode piece and the negative electrode piece, and the top ends of the positive electrode piece and the negative electrode piece are respectively slidably abutted against the front ends of the two power connection pieces 2. The bottom surfaces of the two power connection pieces 2 are respectively provided with a pushing block 1 and a pushing block 2, and a top air outlet is opened on the top surface of the pushing frame, and the top air outlet is located directly below the pushing block 1 and the pushing block 2.

[0017] As a further solution of the present invention, water pipes are provided on the top of the outer walls of several support tubes, and the end of the water pipes away from the support tubes is connected to a terminal ring tube. Several spray pipes are provided at equal intervals on the circumference of the outer wall of the terminal ring tube. The terminal ring tube is located directly above the lithium battery body, and air guide pipes are provided on the outer walls of several pushing frames. The ends of the air guide pipes away from the pushing frames are respectively connected to the storage boxes.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention significantly improves the safety of the lithium battery system through its innovative structural design during use. When the lithium battery is punctured or impacted, the mounting barrel can drive the elastic base to rotate, effectively reducing the risk of puncture and protecting the internal lithium battery from damage. In addition, the sand filled between the rubber sleeve and the mounting barrel can act as a flame retardant in the event of a lithium battery fire, providing valuable buffer time for the unloading and fire extinguishing components to operate, further delaying the spread of fire. The connecting rope can melt under the high temperature released by the lithium battery, triggering the opening and closing plate to open, ensuring that the device can quickly respond to fire situations.

[0020] 2. When the present invention is in use, if a lithium battery catches fire, the device releases high-pressure gas through the gas cylinder to push the installation cylinder to move, and the burning lithium battery is quickly discharged from the discharge port on the outer wall of the installation box body. This design effectively avoids the chain reaction caused by high temperature and prevents other lithium batteries from catching fire due to heat. If the outer wall of the installation box is blocked by foreign objects and the opening and closing plate cannot be opened, the high-pressure gas pushes the power connection plate through the top outlet to disconnect the circuit, thereby disconnecting the power supply between the lithium battery and the circuit board, further cutting off the fire source, and ensuring that the fire does not spread to other equipment or areas;

[0021] 3. When the present invention is in use, when the air holes and the top air outlet are both closed, high-pressure gas is pushed into the storage box to trigger the fire extinguishing system, and the burning lithium battery is efficiently extinguished through the sprinkler pipe. Perfluorohexanone, as a highly efficient fire extinguishing agent, quickly interrupts the combustion chain reaction and reduces the flame temperature through the dual mechanisms of chemical inhibition and physical cooling, thereby quickly extinguishing the fire. In addition, the device is also designed with a mechanism for sliding plates to close the top air outlet to ensure that the system can automatically close the gas path after the power-off operation is completed. This multiple protection mechanism not only improves the fire extinguishing efficiency, but also ensures the reliability and safety of the device in complex environments, providing comprehensive protection for the safe operation of the lithium battery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is an exploded view of the overall structure of the present invention;

[0024] Figure 3 Schematic diagram of the internal structure of the present invention;

[0025] Figure 4 It is a front view of the internal structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the local structure of the present invention;

[0027] Figure 6 It is an exploded view of the local structure of the present invention;

[0028] Figure 7 This is a structural parts diagram of the push frame of the present invention;

[0029] Figure 8 This is an installation diagram of the installation tube structure of the present invention;

[0030] Figure 9 This is an installation diagram of the extended upper support arm structure of the present invention;

[0031] Figure 10 A diagram showing the structure and position of the trigger assembly of the present invention;

[0032] Figure 11 It is a cross-sectional view of the trigger component structure of the present invention.

[0033] In the figure: 1. Installation box body; 2. Installation cover; 3. Connection post; 4. Circuit board;

[0034] 5. Fire extinguishing assembly; 500. Mounting frame; 501. Storage box; 502. Extended lower arm; 503. Terminal ring pipe; 504. Sprinkler pipe; 505. Support pipe; 506. Extended upper arm; 507. Water pipe; 508. Terminal strip 1; 509. Wiring slot; 510. Terminal card slot; 511. Mounting end plate; 512. Terminal strip 2; 513. Push block 1; 514. Push block 2; 515. Rotating plate;

[0035] 6. Opening and closing panels;

[0036] 7. Discharging assembly; 700. Pushing frame; 701. Arc groove; 702. Gas cylinder; 703. Top air outlet; 704. Blowing hole; 705. Sliding plate; 706. Air guide tube; 707. Mounting tube; 708. Rubber sleeve; 709. Sealing ring; 710. Elastic base;

[0037] 8. Extruded plate;

[0038] 9. Lithium battery body;

[0039] 10. Positive electrode; 11. Negative electrode; 12. Mounting platform; 13. Ball bearing; 14. Connecting rope; 15. Mounting slot;

[0040] 16. Trigger assembly; 160. Trigger tube; 161. Connecting tube; 162. Moving column; 163. Cone; 164. Inclined surface; 165. Trigger rod; 166. Exhaust pipe; 167. Piston; 168. Spring; 169. Tension rod; 170. Connecting ring. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0042] Example 1: Please refer to Figures 1 to 10, a combined lithium battery includes a mounting box body 1, a mounting cover 2 is fixedly installed on the top surface of the mounting box body 1 by bolts, two power connection posts 3 are provided on the top surface of the mounting cover 2, a circuit board 4 is fixedly installed on the bottom surface of the mounting cover 2, and a fire extinguishing component 5 is installed inside the mounting box body 1. Specifically, the fire extinguishing component 5 is used to perform flame retardant fire extinguishing operations on the lithium battery body 9 that has caught fire. The fire extinguishing component 5 includes a mounting rack 500, and the mounting rack 500 is symmetrically and equidistantly installed with several unloading components 7. Specifically, the unloading component 7 is used to push the burning lithium battery body 9 out of the mounting box body 1 to avoid causing a chain fire of the surrounding lithium battery bodies 9. When the lithium battery body 9 catches fire, the unloading component 7 works first. When the unloading component 7 cannot work, the device will trigger the linkage effect to make the fire extinguishing component 5 work. The unloading component 7 includes a mounting cylinder 707, and a lithium battery body 9 is fixedly installed in the mounting cylinder 707. Several lithium battery bodies 9 are electrically connected to the circuit board 4 through wires.

[0043] See also Figures 4 to 10 , the front and rear end surfaces of the mounting frame 500 are equidistantly provided with several groups of extended lower support arms 502, and several groups of unloading components 7 are respectively installed on the top surfaces of the several extended lower support arms 502. The unloading component 7 includes a pushing frame 700 and a mounting cylinder 707. The front end surface of the pushing frame 700 is provided with an arc groove 701, and the outer wall of the mounting cylinder 707 abuts against the arc groove 701. Specifically, the size of the arc groove 701 is adapted to the size of the outer wall of the mounting cylinder 707. The mounting cylinder 707 is made of high-temperature resistant metal material. The lithium battery body 9 is installed in the mounting cylinder 707. Specifically, a rubber sleeve 708 is installed on the inner wall of the mounting cylinder 707. The rubber sleeve 708 is annular in shape. The bottom end of the rubber sleeve 708 is fixedly connected to the inner bottom surface of the mounting cylinder 707. A sealing ring 709 is installed on the top of the rubber sleeve 708. The outer wall of the sealing ring 709 is fixedly connected to the top of the inner wall of the mounting cylinder 707 through a thread. Sand is filled between the rubber sleeve 708 and the mounting cylinder 707. The rubber sleeve 708 can be changed by filling different amounts of sand. The inner diameter of the lithium battery body 9 is used to clamp and fix the lithium battery body 9 in the mounting cylinder 707. At the same time, when the lithium battery body 9 catches fire, the rubber sleeve 708 is damaged, and the sand inside the rubber sleeve 708 can play a certain flame retardant effect. An elastic base 710 is installed on the bottom surface of the mounting cylinder 707. Specifically, the elastic base 710 is made of rubber and has a certain elasticity. The elastic base 710 is rotatably mounted on the top surface of the end of the extended lower support arm 502. Specifically, the top surfaces of the ends of the extended lower support arms 502 are all fixedly mounted with a mounting platform 12. The top surface of the mounting platform 12 is rotatably mounted with a ball 13. The bottom surface of the elastic base 710 is provided with an arc groove. The size of the arc groove is adapted to the size of the ball 13. The outer wall of the ball 13 abuts against the inner wall of the arc groove, so that the elastic base 710 can rotate on the top surface of the mounting platform 12. When the mounting cylinder 707 is punctured by a sharp object, the mounting cylinder 707 can drive the elastic base 710 to rotate, reducing the risk of puncture and protecting the internal lithium battery body 9.

[0044] Example 2: Please refer to Figures 4 to 11 , a combined lithium battery, which is different from Example 1 in that the front and rear walls of the installation box body 1 are equidistantly provided with a plurality of discharge ports, and the tops of the plurality of discharge ports are hinged with opening and closing plates 6. Specifically, a torsion spring is installed on the top of the opening and closing plate 6, and one end of the torsion spring away from the closing plate 6 is connected to the inner wall of the discharge port. When the opening and closing plate 6 is closed at the discharge port, the torsion spring is compressed, and the torsion spring provides a force for the opening and closing plate 6 to flip outward, and the plurality of opening and closing plates 6 correspond to the positions of the plurality of unloading components 7 respectively. The end surfaces of the plurality of opening and closing plates 6 close to the unloading components 7 are bonded with extrusion plates 8. The end surfaces of the extrusion plates 8 away from the closing plate 6 abut against the outer wall of the installation cylinder 707. Specifically, the extrusion plate 8 is made of rubber and has a certain elasticity. The inner wall of the extrusion plate 8 is a grid structure. The extrusion plate 8 has a limiting effect on the installation cylinder 707. The extrusion plate 8 and the arc groove 701 can fix the installation cylinder 707 on the installation frame 500 to prevent the installation cylinder 707 from driving the lithium battery body 9 to move. Figure 4 、 Figure 10 , the bottom ends of several opening and closing plates 6 are connected to connecting ropes 14, and several extended lower support arms 502 are provided with mounting grooves 15. The end of the connecting rope 14 away from the closing plate 6 passes through the mounting groove 15 and enters the mounting tube 707 and is clamped and fixed between the rubber sleeve 708 and the lithium battery body 9. Specifically, the connecting rope 14 is made of natural rubber or synthetic rubber, which has a softening temperature of about 60°C to 80°C and a decomposition temperature of about 200°C to 300°C. When the lithium battery body 9 catches fire, the high temperature released by the lithium battery body 9 can melt the connecting rope 14. The breaking of the connecting rope 14 can cause the opening and closing plate 6 to lose its pulling force, and the torsion spring releases the elastic force to open the opening and closing plate 6.

[0045] A trigger assembly 16 is installed in the mounting groove 15. The upper end of the trigger assembly 16 is threadedly connected to a gas cylinder 702, and the gas cylinder 702 is located in the push frame 700. The trigger assembly 16 includes a trigger tube 160. Specifically, the gas cylinder 702 is stored in a storage groove opened on the rear wall of the push frame 700. The gas cylinder 702 is threadedly connected and installed in a connecting pipe 161 opened on the outer wall of the trigger tube 160. High-pressure nitrogen is stored in the gas cylinder 702. The gas outlet on the bottom surface of the gas cylinder 702 is sealed by a metal film (this sealing technology is existing technology and will not be explained in detail here). Please refer to Figure 10 、 Figure 11A movable column 162 is slidably mounted on the rear end of the trigger cylinder 160. The movable column 162 is located directly below the gas cylinder 702. A pointed cone 163 is provided on the top surface of the movable column 162. An inclined surface 164 is provided on the outer wall of the movable column 162. A piston 167 is slidably connected to the inner wall of the trigger cylinder 160. A stretching rod 169 is provided on the front end surface of the piston 167. The stretching rod 169 passes through the front end surface of the trigger cylinder 160 and is connected to the connecting rope 14. Specifically, a connecting rod 169 is provided on the front end of the stretching rod 169. The connecting ring 170 is sleeved on the outer wall of the connecting rope 14, a spring 168 is sandwiched between the front end surface of the piston 167 and the inner wall of the trigger cylinder 160, the rear end surface of the piston 167 is provided with a trigger rod 165, the outer wall of the trigger cylinder 160 is provided with an air outlet pipe 166, the air outlet pipe 166 is connected to the bottom surface of the push frame 700, the push frame 700 has an air delivery groove inside, and the outer wall of the arc groove 701 is provided with an air hole 704 for exhaust. Specifically, when the connecting ring 170 is sleeved on the connecting rope 14, a spring 168 is sandwiched between the front end surface of the piston 167 and the inner wall of the trigger cylinder 160, a trigger rod 165 is provided on the rear end surface of the piston 167, and an air outlet pipe 166 is provided on the outer wall of the trigger cylinder 160. The air outlet pipe 166 is connected to the bottom surface of the push frame 700, and the push frame 700 has an air delivery groove inside. The outer wall of the arc groove 701 is provided with an air hole 704 for exhaust. When the outer wall of the rope 14 is touched, the spring 168 is compressed. When the lithium battery body 9 catches fire, the high temperature released by the lithium battery body 9 can melt the connecting rope 14, and the spring 168 releases the elastic force to push the piston 167 to move. The piston 167 drives the trigger rod 165 to move. The end of the trigger rod 165 abuts against the inclined surface 164, so that the movable column 162 is lifted. The movable column 162 pierces the metal film at the gas outlet on the bottom surface of the gas cylinder 702 through the pointed cone 163, and the high-pressure gas in the gas cylinder 702 enters the trigger cylinder 160. The high-pressure gas in the trigger cylinder 160 enters the gas delivery groove inside the pushing frame 700 through the gas outlet pipe 166. The high-pressure nitrogen passes through the gas delivery groove and is finally discharged from the blowing hole 704. The high-pressure nitrogen discharged from the blowing hole 704 pushes the installation cylinder 707 to move. Since the opening and closing plate 6 has been opened, the installation cylinder 707 will drive the lithium battery body 9 to be discharged from the discharge port on the outer wall of the installation box body 1, thereby preventing other lithium battery bodies 9 from being caused by high temperature and causing a chain fire.

[0046] Example 3: Please refer to Figures 4 to 11, a combined lithium battery, which differs from Example 1 in that the fire extinguishing assembly 5 further includes a storage box 501, which is fixedly installed in the mounting frame 500 and filled with perfluorohexanone. Specifically, perfluorohexanone is a highly effective fire extinguishing agent that quickly interrupts the combustion chain reaction and reduces the flame temperature through the dual mechanisms of chemical inhibition and physical cooling, thereby quickly extinguishing the fire. It is suitable for fires of solid materials, liquids or liquefiable solids, gases and electrical equipment, and is particularly suitable for places such as data centers, power facilities, and museums because it is non-conductive and leaves no residue. It has low toxicity to the human body and is safe to use at recommended concentrations. It is colorless and odorless, leaves no residue after fire extinguishing, and will not damage equipment. In addition, perfluorohexanone is non-conductive and is suitable for electrical equipment fires. It will not cause short circuits or equipment damage after fire extinguishing, and it can evaporate quickly after fire extinguishing, without the need to clean up residues. Perfluorohexanone is liquid at room temperature and is easy to store and transport. Several support tubes 505 are equidistantly installed on the top surface of the storage box 501. Specifically, the bottom end of the support tube 505 is fixed to the top surface of the storage box 501 by threads. The support tube 505 is a rigid part, and the outer wall of the support tube 505 is provided with an extended upper support arm 506.

[0047] See also Figure 6 、 Figure 9 , the top and bottom surfaces of the extended upper support arm 506 are both equipped with a power connection piece 508, and the front and rear ends of the two power connection pieces 508 are both provided with a wiring slot 509 and a power connection slot 510. Specifically, the wiring slot 509 is used to connect the wire to the circuit board 4. The front end surface of the extended upper support arm 506 is fixedly equipped with a mounting end plate 511. The top and bottom surfaces of the end of the mounting end plate 511 are both rotatably equipped with a power connection piece 512. Specifically, the top and bottom surfaces of the end of the mounting end plate 511 are both rotatably connected to a rotating disk 515. The two power connection pieces 512 are respectively fixedly mounted on the two rotating disks 515. The outer wall, the rear ends of the two power connection pieces 512 are respectively slidably abutted against the two power connection slots 510, and the positive and negative poles of the lithium battery body 9 are respectively connected to the positive electrode piece 10 and the negative electrode piece 11. The top ends of the positive electrode piece 10 and the negative electrode piece 11 are respectively slidably abutted against the front ends of the two power connection pieces 512. The bottom surfaces of the two power connection pieces 512 are respectively provided with a push block 1 513 and a push block 2 514. Specifically, the push block 1 513 is fixedly connected to the power connection piece 2 512 at the lower end of the mounting end plate 511, and the push block 2 514 is fixedly connected to the power connection piece 2 512 at the upper end of the mounting end plate 511. Please refer to Figure 7, a top air outlet 703 is provided on the top surface of the pushing frame 700, and the top air outlet 703 is located just below the pushing block 1 513 and the pushing block 2 514. Specifically, the top air outlet 703 is connected to the gas delivery groove inside the pushing frame 700, and the aperture of the top air outlet 703 is smaller than the blowing hole 704. When the outer wall of the installation box body 1 is surrounded by foreign objects and the opening and closing plate 6 cannot be opened, the installation cylinder 707 cannot be separated from the arc groove 701, and the blowing hole 704 is blocked by the outer wall of the installation cylinder 707. The high-pressure gas in the gas delivery groove is discharged from the top air outlet 703, and the high-pressure gas discharged from the top air outlet 703 blows the pushing block 1 513 and the pushing block 2 514 to the two sides respectively. When the battery is in the closed position, the battery is disconnected from the circuit board 4. The battery is then disconnected from the circuit board 4. The battery is then disconnected from the circuit board 4. The battery is then disconnected from the circuit board 4. The battery is then disconnected from the circuit board 4. The battery is then disconnected from the circuit board 4. The battery is then disconnected from the circuit board 4. The battery is then disconnected from the circuit board 4. The battery is then disconnected from the circuit board 4. The battery is then disconnected from the circuit board 4. The battery is then disconnected from the circuit board 4.

[0048] See also Figure 5 , Figure 6 , the top of the outer wall of several support tubes 505 is provided with a water pipe 507, and the end of the water pipe 507 away from the support tube 505 is connected to the terminal ring tube 503, and the outer wall of the terminal ring tube 503 is equidistantly provided with a plurality of spray pipes 504, and the terminal ring tube 503 is located directly above the lithium battery body 9. Specifically, the support tube 505, the water pipe 507, the terminal ring tube 503 and the spray pipe 504 are all rigid structures and interconnected. The outer wall of several push racks 700 is provided with an air guide pipe 706, and the end of the air guide pipe 706 away from the push rack 700 is respectively connected to the storage box 501. Specifically, the several air guide pipes 706 and the support tube A pressure valve is provided in 505, and the air guide pipe 706 is connected to the air supply groove inside the pushing frame 700. When the outer wall of the installation box body 1 is surrounded by foreign objects and the opening and closing plate 6 cannot be opened, the blowing hole 704 is blocked. At the same time, after the power-off operation of the lithium battery body 9 and the circuit board 4, the sliding plate 705 closes the top air outlet 703, and the high-pressure nitrogen pushes the pressure valve in the air guide pipe 706 into the storage box 501. The perfluorohexanone in the storage box 501 pushes the pressure valve in the support tube 505 into the water supply pipe 507, and finally the fire-fighting operation is performed on the lithium battery body 9 on fire through the spray pipe 504 on the outer wall of the terminal ring pipe 503.

[0049] The working principle of the present invention is as follows: when the device is in use and encounters a puncture impact, the mounting cylinder 707 can drive the elastic base 710 to rotate, thereby reducing the risk of puncture and protecting the internal lithium battery body 9;

[0050] If a single lithium battery body 9 catches fire, and there is no external obstruction outside the installation box body 1, the rubber sleeve 708 on the outer wall of the lithium battery body 9 will be damaged by the high temperature. The sand between the rubber sleeve 708 and the installation cylinder 707 can play a certain flame retardant effect, providing a buffer time for the operation of the unloading component 7 and the fire extinguishing component 5. At the same time, the connecting rope 14 is made of natural rubber or synthetic rubber, which has a softening temperature of about 60°C to 80°C and a decomposition temperature of about 200°C to 300°C. The temperature generated by the combustion of lithium batteries is extremely high, usually between 800°C and 1000°C. The high temperature released by the lithium battery body 9 can melt the connecting rope 14. The breaking of the connecting rope 14 can cause the opening and closing plate 6 to lose its pulling force, and the torsion spring releases the elastic force to open the opening and closing plate 6;

[0051] At the same time, the connecting rope 14 in the installation groove 15 loses its tension on the connecting ring 170, and the spring 168 releases its elastic force to push the piston 167 to move. The piston 167 drives the trigger rod 165 to move, and the end of the trigger rod 165 abuts against the inclined surface 164, so that the movable column 162 is lifted. The movable column 162 pierces the metal film at the gas outlet on the bottom surface of the gas cylinder 702 through the pointed cone 163, and the high-pressure gas in the gas cylinder 702 enters the trigger cylinder 160. The high-pressure gas in the trigger cylinder 160 enters the gas delivery groove inside the pushing frame 700 through the gas outlet pipe 166. The high-pressure nitrogen passes through the gas delivery groove and is finally discharged from the blowing hole 704. The high-pressure nitrogen discharged from the blowing hole 704 pushes the installation cylinder 707 to move. Since the opening and closing plate 6 has been opened, the installation cylinder 707 will drive the lithium battery body 9 to be discharged from the discharge port on the outer wall of the installation box body 1, so as to prevent other lithium battery bodies 9 from being caught in a chain fire due to high temperature.

[0052] Another situation is that the outer wall of the installation box body 1 is surrounded by foreign objects, resulting in the opening and closing plate 6 being unable to open. At this time, the installation cylinder 707 cannot be separated from the arc groove 701, and the blowing hole 704 is blocked by the outer wall of the installation cylinder 707. The high-pressure gas in the gas transmission groove is discharged from the top air outlet 703. The high-pressure gas discharged from the top air outlet 703 blows the push block 1 513 and the push block 2 514 to move to both sides respectively. The push block 1 513 and the push block 2 514 respectively drive the two power connection pieces 2 512 to rotate on the installation end plate 511, so that the two The rear end of the second power connection piece 512 is disengaged from the power connection slots 510 of the two first power connection pieces 508, thereby completing the power-off operation between the lithium battery body 9 and the circuit board 4. A sliding plate 705 is slidably inserted into one side of the inner wall of the top air outlet 703. The top surface of the sliding plate 705 is provided with a protrusion. When the push block 1 513 or the push block 2 514 moves, the sliding plate 705 can be driven to move by the protrusion. When the two second power connection pieces 512 are disengaged from the two first power connection pieces 508, the sliding plate 705 also simultaneously closes the top air outlet 703.

[0053] When the air hole 704 and the top air outlet 703 are both blocked, the high-pressure nitrogen pushes the pressure valve in the air guide tube 706 into the storage box 501, and the perfluorohexanone in the storage box 501 pushes the pressure valve in the support tube 505 into the water pipe 507, and finally the fire of the lithium battery body 9 on fire is extinguished through the spray pipe 504 on the outer wall of the terminal ring tube 503. Perfluorohexanone is a highly efficient fire extinguishing agent that quickly interrupts the combustion chain reaction and reduces the flame temperature through the dual mechanisms of chemical inhibition and physical cooling, thereby quickly extinguishing the fire; at this point, the work of this device is completed.

[0054] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A combined lithium battery, comprising a mounting box body, characterized in that: A mounting cover is fixedly installed on the top surface of the mounting box body by bolts, two power connection posts are provided on the top surface of the mounting cover, a circuit board is fixedly installed on the bottom surface of the mounting cover, a fire extinguishing assembly is installed inside the mounting box body, the fire extinguishing assembly includes a mounting frame, and a plurality of unloading assemblies are symmetrically and equidistantly installed on the mounting frame in the front and back, the unloading assembly includes a mounting cylinder, a lithium battery body is fixedly installed in the mounting cylinder, and the plurality of lithium battery bodies are electrically connected to the circuit board through wires.

2. The combined lithium battery according to claim 1, characterized in that: The front and rear end surfaces of the mounting frame are equidistantly provided with several groups of extended lower support arms, and several groups of unloading components are respectively installed on the top surfaces of the several extended lower support arms. The unloading component includes a pushing frame and a mounting tube. The front end surface of the pushing frame is provided with an arc groove, and the outer wall of the mounting tube abuts against the arc groove.

3. The combined lithium battery according to claim 2, characterized in that: A lithium battery body is installed in the installation cylinder, an elastic base is installed on the bottom surface of the installation cylinder, and the elastic base is rotatably installed on the top surface of the end of the extended lower support arm.

4. The combined lithium battery according to claim 3, characterized in that: The front and rear walls of the installation box body are equidistantly provided with a plurality of discharge ports, the tops of the plurality of discharge ports are hinged with opening and closing plates, the plurality of opening and closing plates respectively correspond to the positions of a plurality of groups of unloading components, the end faces of the plurality of opening and closing plates close to the unloading components are bonded with extrusion plates, and the end faces of the extrusion plates away from the clamping plates are in contact with the outer wall of the installation tube.

5. The combined lithium battery according to claim 4, characterized in that: The bottom ends of the several opening and closing plates are connected to connecting ropes, and the interiors of the several extended lower arms are provided with mounting grooves. The end of the connecting rope away from the closing plate passes through the mounting groove and enters the mounting tube and is clamped and fixed between the rubber sleeve and the lithium battery body.

6. The assembled lithium battery according to claim 5, characterized in that: A trigger assembly is installed in the mounting groove, and a gas cylinder is threadedly connected to the upper end of the trigger assembly. The trigger assembly includes a trigger tube, and a movable column is slidably installed in the rear end of the trigger tube. The movable column is located directly below the gas cylinder, and a pointed cone is provided on the top surface of the movable column. An inclined surface is provided on the outer wall of the movable column. A piston is slidably connected to the inner wall of the trigger tube, and a stretching rod is provided on the front end surface of the piston. The stretching rod passes through the front end surface of the trigger tube and is connected to the connecting rope.

7. The assembled lithium battery according to claim 6, characterized in that: A spring is sandwiched between the front end surface of the piston and the inner wall of the trigger cylinder, a trigger rod is provided on the rear end surface of the piston, an air outlet pipe is provided on the outer wall of the trigger cylinder, the air outlet pipe is connected to the bottom surface of the push frame, an air delivery groove is provided inside the push frame, and an air hole for exhaust is opened on the outer wall of the arc groove.

8. The assembled lithium battery according to claim 1, characterized in that: The fire extinguishing assembly also includes a storage box, which is fixedly installed in the mounting frame and filled with perfluorohexanone. A plurality of support tubes are equidistantly installed on the top surface of the storage box, and an extended upper support arm is provided on the outer wall of the support tube.

9. The assembled lithium battery according to claim 8, characterized in that: The top and bottom surfaces of the extended upper support arm are both equipped with a power connection piece 1, and the front and rear ends of the two power connection pieces 1 are both provided with wiring slots and power connection slots. The front end surface of the extended upper support arm is fixedly installed with a mounting end plate, and the top and bottom surfaces of the end portions of the mounting end plate are rotatably installed with a power connection piece 2, and the rear ends of the two power connection pieces 2 are respectively slidably abutted against the two power connection slots, and the positive and negative poles of the lithium battery body are respectively connected to the positive pole piece and the negative pole piece, and the top ends of the positive pole piece and the negative pole piece are respectively slidably abutted against the front ends of the two power connection pieces 2, and the bottom surfaces of the two power connection pieces 2 are respectively provided with a pushing block 1 and a pushing block 2, and a top air outlet is opened on the top surface of the pushing frame, and the top air outlet is located directly below the pushing block 1 and the pushing block 2.

10. The assembled lithium battery according to claim 9, characterized in that: A water pipe is provided at the top of the outer wall of several of the support tubes, and the end of the water pipe away from the support tube is connected to a terminal ring tube. Several spray pipes are equidistantly provided on the circumference of the outer wall of the terminal ring tube. The terminal ring tube is located directly above the lithium battery body. An air guide pipe is provided on the outer wall of several of the pushing frames, and the end of the air guide pipe away from the pushing frame is respectively connected to the storage box.

Images