New energy storage battery with protection device

Abstract

The application relates to the technical field of batteries, in particular to a new energy storage battery with a protection device, which comprises a battery bin, the upper end of the battery bin is fixedly connected with a battery cover, the inner wall bottom end of the battery bin is fixedly connected with a connecting frame, the front and rear ends of the connecting frame are both fixedly connected with a plurality of mounting plates, the end, away from the connecting frame, of each mounting plate is fixedly connected with a mounting box, the side, away from the connecting frame, of the mounting plate is provided with a first matching plate, the first matching plate and the mounting plate are fixedly installed with a pop-up mechanism, the top of the first matching plate is provided with a lithium battery, when the lithium battery is short-circuited and catches fire, the pop-up mechanism will pop the lithium battery out of the battery bin, so that the lithium battery in the battery bin is prevented from catching fire, other lithium batteries are prevented from catching fire at the same time due to high temperature, the top of the lithium battery is also provided with an abutting limiting mechanism, the abutting limiting mechanism can release the lithium battery, the lithium battery is separated from the limiting mechanism, so that the lithium battery can be far away from the battery bin, and a plurality of guide outlets are formed in the front and rear ends of the battery bin.

Description

Technical Field

[0001] This invention relates to the field of battery technology, specifically to a new energy storage battery with a protective device. Background Technology

[0002] Today, outdoor lifestyles such as camping and wilderness exploration are becoming increasingly popular, and the demand for reliable outdoor power sources continues to rise. New energy outdoor batteries, with their environmentally friendly and efficient characteristics, have become key equipment for powering electronic devices and lighting tools in outdoor activities, greatly improving the convenience of outdoor activities. The market sales growth rate exceeds 30% annually.

[0003] However, their safety issues are prominent. Most new energy outdoor batteries use lithium-ion battery technology, which has a complex internal structure. The high temperature environment outdoors can easily accelerate the internal chemical reaction of the battery and reduce thermal stability. Collisions or squeezing during transportation or use may damage the internal structure of the battery and cause thermal runaway. Once a single small battery thermally runs away, the temperature will rise instantly, releasing flammable gas, which is extremely easy to spontaneously combust. Because the battery pack is tightly arranged, the spontaneous combustion of a single small battery will spread rapidly, causing the entire battery pack to catch fire or even explode. Last year, there were more than 200 accidents caused by safety issues of new energy outdoor batteries, which seriously damaged users' property, affected market reputation, and hindered the development of the industry.

[0004] Currently, the industry uses battery management systems to monitor parameters and warn of abnormalities, and uses fireproof partitions and flame-retardant materials to isolate small batteries to reduce the risk of heat spread. However, due to the complex outdoor environment and the speed of thermal runaway reaction, these measures are difficult to effectively prevent accidents. Therefore, developing a protective device that can quickly eject and expel a single small battery when it spontaneously combusts is crucial for improving the safety of outdoor new energy batteries and promoting the sustainable development of the industry.

[0005] A search revealed that prior art publication number CN111244570A discloses a self-ignition prevention device for new energy batteries, including a housing with an installation cavity inside. A battery body is installed on the rear inner wall of the installation cavity. Ventilation openings are provided at the top and bottom of the installation cavity. Two sliding grooves and two ventilation mechanisms are symmetrically arranged on the upper and lower inner walls of the housing. Each ventilation mechanism includes a first piston and a second piston slidably connected in the two corresponding sliding grooves. A heat dissipation plate is fixedly connected between the first and second pistons. The heat dissipation plate consists of half a solid plate and half a mesh plate. The device includes a fire suppression mechanism. In the event of spontaneous combustion, the heat dissipation holes are blocked to prevent air from entering the device, thus suppressing the fire. Simultaneously, the temperature generated by the spontaneous combustion triggers a fire extinguishing mechanism for rapid fire suppression, effectively inhibiting spontaneous combustion of the battery.

[0006] Therefore, based on the above retrieval and combined with existing methods, when the above-mentioned solution is used, when the battery spontaneously combusts, it only suppresses the fire through the fire suppression mechanism. In the event of spontaneous combustion, the heat dissipation holes are blocked to prevent air from entering the protective device, thus suppressing the fire. At the same time, the temperature generated by the spontaneous combustion triggers the fire extinguishing mechanism to achieve rapid fire extinguishing. While effectively suppressing the spontaneous combustion of the battery, it cannot expel a single battery that has caught fire from the outside, which has limitations. In order to solve the problem of not being able to expel a single battery that has caught fire from the outside, we propose a new energy battery with a protective device. Summary of the Invention

[0007] The purpose of this invention is to provide a new energy storage battery with a protective device to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A new energy storage battery with a protective device includes a battery compartment. A battery cover is fixedly connected to the upper end of the battery compartment. A connecting frame is fixedly connected to the bottom end of the inner wall of the battery compartment. Several mounting plates are fixedly connected to both the front and rear ends of the connecting frame. A mounting box is fixedly connected to the end of each mounting plate away from the connecting frame. A first mating plate is provided on the side of the mounting plate away from the connecting frame. A pop-out mechanism is fixedly installed between the first mating plate and the mounting plate. A lithium battery is provided above the first mating plate.

[0010] When the lithium battery short-circuits and catches fire, the ejection mechanism will eject the lithium battery from the battery compartment to prevent the fire from starting inside the battery compartment and causing other lithium batteries to catch fire simultaneously due to high temperature. A stop and limit mechanism is also provided above the lithium battery. The stop and limit mechanism can release the lithium battery and remove it from the limit, allowing the lithium battery to move away from the battery compartment. Several outlets are provided at both the front and rear ends of the battery compartment.

[0011] As a further aspect of this solution, the pop-out mechanism includes a movable plate, two first elastic telescopic rods are fixedly connected between the movable plate and the mounting plate, two second rotating arms are rotatably connected to both the front and rear ends of the movable plate, two first rotating arms are rotatably connected to both the front and rear ends of the mounting plate, each first rotating arm is rotatably connected to the bottom end of an adjacent second rotating arm, and a return torsion spring is fixedly connected between each first rotating arm and an adjacent second rotating arm.

[0012] As a further aspect of this solution, two connecting ropes are fixedly connected between the movable plate and the mounting plate. A second mating plate is fixedly connected to one end of the movable plate near the mounting plate. A conical sleeve is fixedly connected to the bottom of the second mating plate. A push plate is provided at the upper end of the first mating plate. A conductive metal rod is fixedly connected to the bottom of the push plate. The outer wall of the conductive metal rod is slidably connected to the inside of the first mating plate.

[0013] As a further aspect of this solution, a second spring is fixedly connected between the push plate and the first mating plate, and a connecting piece is fixedly connected to one end of the mounting plate near the first mating plate. The outer wall of the connecting piece is provided with a curved wall, and the upper end of the curved wall abuts against the bottom of the conductive metal rod.

[0014] As a further aspect of this solution, an elastic telescopic tube is fixedly connected to the bottom of the lithium battery, the bottom of the elastic telescopic tube abuts against the upper end of the push plate, and a rubber sleeve is fixedly connected to the bottom of the inner wall of the elastic telescopic tube.

[0015] As a further aspect of this solution, the rubber sleeve is also filled with high-expansion foam extinguishing agent. The upper end of the rubber sleeve is fixedly connected to the upper end of the elastic telescopic tube. An abutment plate is fixedly connected to the end of the mounting plate near the moving plate. The bottom of the abutment plate abuts against the upper end of the elastic telescopic tube.

[0016] As a further aspect of this solution, the abutment limiting mechanism includes a bottom ring, which is fixedly connected to the upper end of the second mating plate. A movable ring is provided at the upper end of the bottom ring, and the movable ring and the bottom ring are fixedly connected by multiple connecting telescopic tubes. The multiple connecting telescopic tubes are connected to each other through the bottom ring.

[0017] As a further aspect of this solution, the inner wall of the bottom ring is also fixedly connected with several abutting telescopic arms. Each abutting telescopic arm has a conductive block fixedly connected to one end away from the inner wall of the bottom ring. The conductive block and the bottom of the abutting telescopic arm are both in contact with the upper end of the lithium battery. The output end of the inner wall of the abutting telescopic arm is fixedly connected to the moving ring by a steel wire. The outer wall of the steel wire slides through the inside of the abutting telescopic arm.

[0018] As a further aspect of this solution, an abutment block is fixedly connected to the bottom of the first rotating arm, a slider is slidably connected inside the second rotating arm, and a bellows is also fixedly connected inside the second rotating arm, with the upper end of the slider fixedly connected to the bottom of the bellows.

[0019] As a further aspect of this solution, the slider and the abutment block are rotatably connected by two transmission arms via a rotating shaft, and the corrugated pipe and the corresponding connecting pipe are fixedly connected via a pipeline.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The high-expansion foam extinguishing agent filled inside the sleeve will rapidly heat up and expand when encountering situations such as lithium battery fire, completely enveloping the lithium battery. This process can effectively block the lithium battery from contacting the outside air, exert a good flame-retardant effect, and significantly reduce the risk of fire spread. Although it cannot completely retard the fire, it greatly slows down the combustion process. At the same time, the elastic telescopic tube will simultaneously wrap the lithium battery. When the lithium battery is discharged due to the protection mechanism, the elastic telescopic tube can prevent the flames generated by the spontaneous combustion of the lithium battery from spraying outward, avoiding greater harm to the surrounding environment. In addition, this design also provides convenience for the later recycling of lithium batteries, making it convenient for staff to centrally process and reuse them, improving safety while taking into account resource recycling.

[0022] 2. When a single lithium battery shows signs of ignition, it can be quickly expelled from the mounting box, effectively preventing a rapid increase in the internal temperature of the battery compartment due to a single lithium battery ignition. This prevents a chain reaction of short circuits in other lithium batteries caused by high temperature. At the same time, during the process of expelling the lithium battery, the device will simultaneously cut off its power supply, fundamentally cutting off the energy supply to the fire source, greatly reducing the risk of fire spreading, and providing strong protection for the safety of the battery pack and surrounding equipment. Attached Figure Description

[0023] Figure 1 A front view of a new energy storage battery with protective devices;

[0024] Figure 2 A schematic diagram of the internal structure of the battery compartment of a new energy storage battery with protective devices;

[0025] Figure 3 This is a schematic diagram of the mounting plate structure of a new energy storage battery with a protective device.

[0026] Figure 4 This is a schematic diagram of the internal structure of the mounting box for a new energy storage battery with protective devices.

[0027] Figure 5 A schematic diagram showing the location and structure of the connecting rope of a new energy storage battery with a protective device;

[0028] Figure 6 A schematic diagram of the internal structure of the elastic telescopic tube of a new energy storage battery with a protective device;

[0029] Figure 7 This is a schematic diagram of the internal structure of the sliding joint of a new energy storage battery with a protective device.

[0030] Figure 8 A schematic diagram of the connection pipe structure of a new energy storage battery with a protective device;

[0031] Figure 9 This is a schematic diagram of the internal structure of the contact telescopic arm of a new energy storage battery with a protective device.

[0032] In the diagram: 1. Battery cover; 2. Battery compartment; 3. Outlet; 4. Connecting frame; 5. Mounting box; 6. Mounting plate; 7. Moving plate; 8. First elastic telescopic rod; 9. First mating plate; 10. Lithium battery; 11. Second mating plate; 12. First rotating arm; 13. Abutment plate; 15. Connecting rope;

[0033] 16. Elastic telescopic tube; 17. Push plate; 19. Curved wall; 20. Connecting piece; 22. Second rotating arm; 23. Second spring; 24. Conductive metal rod; 25. Rubber sleeve; 26. Corrugated pipe; 27. Sliding port; 28. Sliding block; 29. ​​Abutment block;

[0034] 30. Transmission arm; 31. Moving ring; 32. Bottom ring; 33. Connecting pipe; 34. Connecting telescopic pipe; 35. Steel wire; 36. Abutting telescopic arm; 37. Conductive block; 38. Third spring; 39. Conical sleeve; 101. Pop-out mechanism; 201. Abutting limit mechanism. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figures 1-4 As shown, a new energy storage battery with a protective device includes a battery compartment 2. A battery cover 1 is bolted to the upper end of the battery compartment 2. A connecting frame 4 is fixedly connected to the bottom of the inner wall of the battery compartment 2. Several mounting plates 6 are fixedly connected to both the front and rear ends of the connecting frame 4. The mounting plates 6 are arranged in an array from left to right at both ends of the connecting frame 4. A mounting box 5 is fixedly connected to the end of each mounting plate 6 away from the connecting frame 4. A first mating plate 9 is provided on the side of the mounting plate 6 away from the connecting frame 4. The first mating plate 9 is fixedly installed with the mounting plate 6. There is an ejection mechanism 101. A lithium battery 10 is disposed above the first mating plate 9. When the lithium battery 10 short-circuits and catches fire, the ejection mechanism 101 will eject the lithium battery 10 from the inside of the battery compartment 2 to prevent the fire from starting inside the battery compartment 2 and causing other lithium batteries 10 to catch fire due to high temperature. A stop and limit mechanism 201 is also disposed above the lithium battery 10. The stop and limit mechanism 201 can release the lithium battery 10 and remove it from the limit, so that the lithium battery 10 can move away from the battery compartment 2. Several outlets 3 are opened at both the front and rear ends of the battery compartment 2.

[0037] Example 2: Please refer to Figures 4-5 , Figure 7 As shown, the pop-out mechanism 101 includes a movable plate 7. Two first elastic telescopic rods 8 are fixedly connected between the movable plate 7 and the mounting plate 6. The two first elastic telescopic rods 8 are symmetrically distributed between the movable plate 7 and the mounting plate 6. The two first elastic telescopic rods 8 can quickly reset the movable plate 7. Two second rotating arms 22 are rotatably connected to the front and rear ends of the movable plate 7 via rotating shafts. Two first rotating arms 12 are rotatably connected to the front and rear ends of the mounting plate 6 via rotating shafts. Each first rotating arm 12 is rotatably connected to the bottom end of an adjacent second rotating arm 22. Weight reduction holes are provided on the outer walls of both the first rotating arm 12 and the second rotating arm 22. A reset torsion spring is also fixedly connected between each first rotating arm 12 and an adjacent second rotating arm 22. Figure 4 , Figure 5 The first elastic telescopic rod 8 is in a compressed and stored state, while the second rotating arm 22 and the first rotating arm 12 are in a compressed and folded state. Two connecting ropes 15 are fixedly connected between the moving plate 7 and the mounting plate 6. The connecting ropes 15 are made of polyethylene. Polyethylene is a thermoplastic plastic with a melting point of around 105-130℃. When the temperature rises above 100℃, the thermal motion of the polyethylene molecular chains intensifies. When it approaches the melting point, the molecular chains begin to loosen, the physical properties of the rope change, and it eventually breaks. The two connecting ropes 15 are symmetrically distributed between the moving plate 7 and the mounting plate 6.

[0038] A second mating plate 11 is fixedly connected to one end of the movable plate 7 near the mounting plate 6. The second mating plate 11 is located above the first mating plate 9. A conical sleeve 39 is fixedly connected to the bottom of the second mating plate 11, and the conical sleeve 39 is wider at the bottom and narrower at the top. A push plate 17 is provided at the upper end of the first mating plate 9. A conductive metal rod 24 is fixedly connected to the bottom of the push plate 17. The outer wall of the conductive metal rod 24 is slidably connected to the inside of the first mating plate 9. A second spring 23 is also fixedly connected between the push plate 17 and the first mating plate 9. A connecting piece 20 is fixedly connected to one end of the mounting plate 6 near the first mating plate 9. The outer wall of the connecting piece 20 is provided with a curved wall 19. The upper end of the curved wall 19 abuts against the bottom of the conductive metal rod 24. The connecting piece 20 is made of copper. Copper has good corrosion resistance and high temperature resistance, as well as good conductivity and durability.

[0039] Please see Figures 5-6The bottom of the lithium battery 10 is fixedly connected to an elastic telescopic tube 16. The bottom of the elastic telescopic tube 16 abuts against the upper end of the push plate 17. The bottom of the inner wall of the elastic telescopic tube 16 is fixedly connected to a rubber sleeve 25. The rubber sleeve 25 is made of rubber, which has good corrosion resistance and high temperature resistance, as well as good ductility. The rubber sleeve 25 is also filled with a high-expansion foam extinguishing agent, whose main components include foaming agent, foam stabilizer and water. Under normal conditions, it is stationary. Once it encounters a fire source, the foam extinguishing agent will quickly foam and expand inside the extended elastic telescopic tube 16, which can isolate the lithium battery 10 from the air and has a certain flame-retardant effect. The upper end of the rubber sleeve 25 is fixedly connected to the upper end of the elastic telescopic tube 16. The end of the mounting plate 6 near the moving plate 7 is fixedly connected to an abutment plate 13. The bottom of the abutment plate 13 abuts against the upper end of the elastic telescopic tube 16.

[0040] Please see Figure 4 , Figure 8 , Figure 9 As shown, the abutment limiting mechanism 201 includes a bottom ring 32, which is fixedly connected to the upper end of the second mating plate 11. A movable ring 31 is provided at the upper end of the bottom ring 32. The movable ring 31 and the bottom ring 32 are fixedly connected by multiple connecting telescopic tubes 34. The multiple connecting telescopic tubes 34 are circumferentially distributed between the movable ring 31 and the bottom ring 32, and the multiple connecting telescopic tubes 34 are connected to each other through the bottom ring 32. A number of abutment telescopic arms 36 are also fixedly connected to the inner wall of the bottom ring 32. A third spring 38 is fixedly connected inside the abutment telescopic arm 36. The third spring 38 can drive the abutment telescopic arm 36 to quickly return to its original position. The multiple abutment telescopic arms 36 are located on the inner wall of the bottom ring 32. The upper part is also circumferentially distributed. Each end of the telescopic arm 36 away from the inner wall of the bottom ring 32 is fixedly connected to a conductive block 37. The conductive block 37 and the bottom of the telescopic arm 36 are in contact with the upper end of the lithium battery 10. The second spring 23 drives the push plate 17 to push upward. The push plate 17 will squeeze and move the lithium battery 10 through the elastic telescopic tube 16. At this time, the upper end of the lithium battery 10 is in contact with all the telescopic arms 36 and the conductive block 37, forming a limit and fixation of the lithium battery 10. The output end of the inner wall of the telescopic arm 36 is fixedly connected to the moving ring 31 by a steel wire 35. The outer wall of the steel wire 35 slides through the inside of the telescopic arm 36.

[0041] The bottom of the first rotating arm 12 is fixedly connected to an abutment block 29. The second rotating arm 22 is slidably connected to a slider 28. The second rotating arm 22 is also fixedly connected to a bellows 26. The bellows 26 is also made of rubber and its properties and functions are the same as those of the rubber sleeve 25, which will not be elaborated here. Specifically, the second rotating arm 22 has a sliding opening 27 inside. The bellows 26 is slidably connected to the inner wall of the sliding opening 27. The inner wall of the sliding opening 27 and the outer wall of the slider 28 are both coated with lubricating oil. When the slider 28 slides in the inner wall of the sliding opening 27, the sliding opening 27 can limit the slider 28 and also has a guiding function. It can also improve the stability of the slider 28 when it moves. The lubricating oil can also reduce the friction between the slider 28 and the inner wall of the sliding opening 27, thereby extending the service life of the sliding opening 27 and the slider 28.

[0042] The upper end of the slider 28 is fixedly connected to the bottom of the bellows 26. Two transmission arms 30 are rotatably connected between the slider 28 and the abutment block 29 via a rotating shaft. The two transmission arms 30 are symmetrically distributed between the slider 28 and the abutment block 29. The bellows 26 is fixedly connected to the corresponding connecting pipe 33 via a pipe. Specifically, when the first rotating arm 12 and the second rotating arm 22 rotate, the first rotating arm 12 drives the abutment block 29 to move. The abutment block 29, through the transmission arms 30, drives the slider 28 to slide within the inner wall of the sliding opening 27. When the bellows 26 is squeezed, the gas inside the bellows 26 enters all the connecting telescopic tubes 34 through the connecting tube 33. When all the connecting telescopic tubes 34 extend upward at the same time, the connecting telescopic tubes 34 lift the moving ring 31 upward. The moving ring 31 pulls the steel wire 35. The steel wire 35 drives the abutting telescopic arm 36 to retract. The retraction of the abutting telescopic arm 36 drives the conductive block 37 to move. When the abutting telescopic arm 36 and the conductive block 37 disengage and abut against the upper end of the lithium battery 10, the lithium battery 10 can be released.

[0043] The working principle of this invention is as follows: When a lithium battery 10 inside the battery cover 1 short-circuits and catches fire, the temperature inside the mounting box 5 rises, and the flames burn the two connecting ropes 15. The first elastic telescopic rod 8 will extend, and the second rotating arm 22 and the first rotating arm 12 will extend under the action of the reset torsion spring. At this time, the moving plate 7 will pass through the corresponding outlet 3. The moving plate 7 will move the lithium battery 10 to the outer wall of the battery compartment 2. During the movement of the moving plate 7, the moving plate 7 will move the first mating plate 9. When the first mating plate 9 moves, the first mating plate 9 will move the conductive metal rod 24 away from the upper end of the curved wall 19, thereby disconnecting the power to the lithium battery 10.

[0044] Furthermore, as the first mating plate 9 moves, it will also cause the upper end of the elastic telescopic tube 16 to disengage from the abutment plate 13. The elastic telescopic tube 16 will extend, and when the elastic telescopic tube 16 extends, it will also cause the rubber sleeve 25 to wrap around the lithium battery 10. Since the lithium battery 10 naturally generates high temperature, it will burn through the inner wall of the rubber sleeve 25. The high expansion foam fire extinguishing agent inside the rubber sleeve 25 will heat up and expand, wrapping around the lithium battery 10, so that the lithium battery 10 can be isolated from the outside air, which has a good flame retardant effect, but cannot completely retard the lithium battery 10. The elastic telescopic tube 16 will wrap around the lithium battery 10. When the elastic telescopic tube 16 and the lithium battery 10 are discharged, it can also prevent the flame of the lithium battery 10 from spontaneously combusting and facilitate the later recycling of the lithium battery 10. When the elastic telescopic tube 16 extends, the upper end will abut against the bottom of the abutment telescopic arm 36.

[0045] It is worth noting that when the first rotating arm 12 and the second rotating arm 22 rotate, the first rotating arm 12 drives the abutment block 29 to move. The abutment block 29 drives the slider 28 to slide in the inner wall of the slide chute 27 through the transmission arm 30. The slider 28 will squeeze the bellows 26. The gas inside the bellows 26 will enter all the connecting telescopic tubes 34 through the connecting pipe 33. When all the connecting telescopic tubes 34 extend upward at the same time, the connecting telescopic tubes 34 will lift the moving ring 31 upward. The moving ring 31 will pull the steel wire 35. The steel wire 35 will drive the abutment telescopic arm 36 to retract. When 36 retracts, it will cause the conductive block 37 to move. When the upper end of the lithium battery 10 disengages from all the contacting telescopic arms 36 and conductive blocks 37, the second spring 23 releases its elastic force instantly, causing the push plate 17 to move upward. The push plate 17 will cause the elastic telescopic tube 16 and the lithium battery 10 to pass through the interior of the second mating plate 11. The connecting rope 15 can prevent the upper end of the elastic telescopic tube 16 from getting stuck with the bottom edge of the second mating plate 11. The lithium battery 10 will be discharged from the interior of the mounting box 5 to avoid the battery compartment 2 from overheating due to a fire caused by a single lithium battery 10, which could lead to a short circuit of other lithium batteries 10.

[0046] When the upper end of the lithium battery 10 disengages from the conductive block 37, and the curved wall 19 disengages from the conductive metal rod 24, the power is cut off. Since the elastic telescopic tube 16, the second spring 23, and the push plate 17 are all made of metal, the power will be cut off.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A new energy storage battery with a protective device, comprising a battery compartment, characterized in that: A battery cover is fixedly connected to the upper end of the battery compartment, and a connecting frame is fixedly connected to the bottom of the inner wall of the battery compartment. Several mounting plates are fixedly connected to both the front and rear ends of the connecting frame. A mounting box is fixedly connected to the end of each mounting plate away from the connecting frame. A first mating plate is provided on the side of the mounting plate away from the connecting frame. A pop-out mechanism is fixedly installed between the first mating plate and the mounting plate. A lithium battery is provided above the first mating plate. When the lithium battery short-circuits and catches fire, the pop-out mechanism will pop the lithium battery out of the battery compartment. An abutment limiting mechanism is also provided above the lithium battery. The abutment limiting mechanism can release the lithium battery and remove it from the limit, so that the lithium battery can move away from the battery compartment. Several outlets are provided at both the front and rear ends of the battery compartment. The pop-out mechanism includes a movable plate, two first elastic telescopic rods are fixedly connected between the movable plate and the mounting plate, two second rotating arms are rotatably connected to both the front and rear ends of the movable plate, two first rotating arms are rotatably connected to both the front and rear ends of the mounting plate, each first rotating arm is rotatably connected to the bottom end of an adjacent second rotating arm, and a return torsion spring is fixedly connected between each first rotating arm and an adjacent second rotating arm. The abutment limiting mechanism includes a bottom ring, which is fixedly connected to the upper end of the second mating plate. A movable ring is provided at the upper end of the bottom ring. The movable ring and the bottom ring are fixedly connected by multiple connecting telescopic tubes. The multiple connecting telescopic tubes are connected to each other through the bottom ring. The inner wall of the bottom ring is also fixedly connected to a number of abutment telescopic arms. A conductive block is fixedly connected to the end of each abutment telescopic arm away from the inner wall of the bottom ring. The conductive block and the bottom of the abutment telescopic arm are both in contact with the upper end of the lithium battery. The output end of the inner wall of the abutment telescopic arm is fixedly connected to the movable ring by a steel wire. The outer wall of the steel wire slides through the inside of the abutment telescopic arm. An abutment block is fixedly connected to the bottom of the first rotating arm. A slider is slidably connected inside the second rotating arm. A corrugated pipe is also fixedly connected inside the second rotating arm. The upper end of the slider is fixedly connected to the bottom of the corrugated pipe. Two transmission arms are rotatably connected between the slider and the abutment block through a rotating shaft. The corrugated pipe and the corresponding connecting tube are fixedly connected through a pipe. When the first rotating arm and the second rotating arm rotate, the first rotating arm drives the abutment block to move. The abutment block drives the slider to slide in the inner wall of the sliding opening through the transmission arm. The slider squeezes the bellows, and the gas inside the bellows enters the interior of all the connecting telescopic tubes through the connecting pipe. When all the connecting telescopic tubes 34 extend upward at the same time, the connecting telescopic tubes lift the moving ring upward. The moving ring pulls the steel wire, and the steel wire drives the abutment telescopic arm to retract. The retraction of the abutment telescopic arm drives the conductive block to move. When the abutment telescopic arm disengages from the conductive block and abuts against the upper end of the lithium battery, the lithium battery can be released.

2. A new energy storage battery with a protective device according to claim 1, characterized in that: Two connecting ropes are fixedly connected between the movable plate and the mounting plate. A second mating plate is fixedly connected to one end of the movable plate near the mounting plate. A conical sleeve is fixedly connected to the bottom of the second mating plate. A push plate is provided at the upper end of the first mating plate. A conductive metal rod is fixedly connected to the bottom of the push plate. The outer wall of the conductive metal rod is slidably connected to the inside of the first mating plate.

3. A new energy storage battery with a protective device according to claim 2, characterized in that: A second spring is fixedly connected between the push plate and the first mating plate. A connecting piece is fixedly connected to one end of the mounting plate near the first mating plate. The outer wall of the connecting piece is provided with a curved wall, and the upper end of the curved wall abuts against the bottom of the conductive metal rod.

4. A new energy storage battery with a protective device according to claim 3, characterized in that: The bottom of the lithium battery is fixedly connected to an elastic telescopic tube, the bottom of the elastic telescopic tube abuts against the upper end of the push plate, and a rubber sleeve is fixedly connected to the bottom of the inner wall of the elastic telescopic tube.

5. A new energy storage battery with a protective device according to claim 4, characterized in that: The rubber sleeve is also filled with high-expansion foam extinguishing agent. The upper end of the rubber sleeve is fixedly connected to the upper end of the elastic telescopic tube. An abutment plate is fixedly connected to the end of the mounting plate near the moving plate. The bottom of the abutment plate abuts against the upper end of the elastic telescopic tube.

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