A flame retardant device based on the cascade utilization of new energy vehicle batteries

Abstract

The present invention relates to the technical field of new energy vehicle batteries, and specifically to a flame retardant device based on the cascade utilization of new energy vehicle batteries, comprising a bottom shell, a top shell and a storage box, wherein the top shell is slidably connected to the outside of the bottom shell, the storage box is arranged on the top of the top shell, the storage box and the top shell are integrally formed, and a sealing plate is fixedly connected to the inner wall of the bottom shell. The present invention provides a flame retardant device based on the cascade utilization of new energy vehicle batteries, which has a bottom shell that matches the top shell, and the window grooves and matching grooves respectively opened on the surfaces of the bottom shell and the top shell are in a coincident state under normal use, so that airflow can pass between the bottom shell and the external environment to dissipate heat to the battery cell through the airflow, and the battery cell is directly installed on the surface of the heat sink to facilitate heat conduction to assist the heat dissipation of the bottom of the battery cell, and the arranged wiring terminals can be conveniently electrically connected to the battery cell, and output to the power supply demand through the right side.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle batteries, and in particular to a flame retardant device based on the cascade utilization of new energy vehicle batteries. Background Art

[0002] As we all know, with the rapid development of new energy vehicles, it has become an economical and environmentally friendly way to reuse batteries after they have been used for a certain number of years or have reached a certain performance degradation. However, these recycled batteries still have safety hazards in subsequent use, among which the fire problem caused by battery thermal runaway is particularly prominent. This puts high demands on flame retardant devices to ensure the safety of batteries under various working conditions.

[0003] After searching, a Chinese patent discloses a flame retardant battery, and its application publication number is CN101369640B. This patent has the characteristics of not affecting the battery performance under normal circumstances and ensuring the safety of the battery. Before a safety accident occurs in the battery, the sealed container can be opened instantly, and the flame retardant flows into the interior of the battery cell, thereby ensuring the safety performance of the battery.

[0004] The flame retardant problem needs to be considered when recycling new energy batteries. The existing technology has the following problems: when using batteries, the flame retardant effect is mostly added directly to the battery core, but placing a flame retardant structure inside the battery core may occupy a certain space, reduce the amount of active material in the battery core, and thus reduce the energy density of the battery. In addition, the internal flame retardant structure will change the electric field distribution and ion diffusion path inside the battery core, and may affect the performance indicators of the battery such as the internal resistance and self-discharge rate. In addition, the short-term release of the flame retardant after the battery self-ignites may have limited effect on extinguishing the flame that has already formed.

[0005] Based on the above-mentioned situation, we propose a method of combining a flame retardant device with a battery casing and integrating the flame retardant structure into the casing production process, which can reduce the mass production cost during the cascade utilization process. Moreover, the same type of flame retardant casing can be suitable for a variety of battery cell specifications and models, has good versatility, and has a low false alarm rate for formed flames. It is a flame retardant device based on the cascade utilization of new energy vehicle batteries that can continuously block the flame when an accident occurs. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the shortcomings of the prior art, the present invention provides a flame retardant device based on the cascade utilization of new energy vehicle batteries. The flame retardant structure is integrated into the shell production process, which can reduce the batch production cost during the cascade utilization process. Moreover, the same type of flame retardant shell can be suitable for a variety of battery cell specifications and models, has good versatility, a low false alarm rate for formed flames, and can continuously block the flame when an accident occurs.

[0008] (II) Technical solution

[0009] The above technical objectives of the present invention are achieved through the following technical solutions: a flame retardant device based on the cascade utilization of new energy vehicle batteries, comprising a bottom shell, a top shell and a storage box, the top shell is slidably connected to the outside of the bottom shell, the storage box is arranged on the top of the top shell, the storage box and the top shell are integrally formed, the inner wall of the bottom shell is fixedly connected with a sealing plate, the bottom of the storage box is fixedly connected with a trigger assembly, the inner side of the bottom shell is fixedly connected with a beam frame, the top of the beam frame is fixedly connected with a trigger rod, the outer side of the bottom shell is provided with a window groove, the outer side of the top shell is provided with a matching groove, the inner side of the storage box is filled with a fire extinguishing agent, and the top of the beam frame is fixedly connected with a limiting rod;

[0010] The sealing plate includes a horizontal plate, the outer side of the horizontal plate is fixedly connected to the bottom shell, the inner side of the horizontal plate is equipped with a terminal, the side of the terminal away from the horizontal plate is clamped on the bottom of the right side of the bottom shell, the inner side of the horizontal plate is fixedly connected to a heat sink, the top of the heat sink is fixedly connected to a heat sink, and the top of the heat sink is installed with a battery cell;

[0011] The trigger assembly includes a pad, which is fixedly connected to the inner side of the storage box, an inclined plate is fixedly connected to the inner side of the pad, a bucket plate is movably connected to the inner side of the inclined plate, a blanking plate is movably connected to the inner side of the bucket plate, an adjustment sleeve is fixedly connected to the inner side of the pad, and a hot melt assembly is provided on the inner side of the adjustment sleeve.

[0012] By adopting the above technical scheme, a bottom shell is arranged to match the top shell, and the window grooves and matching grooves respectively opened on the surfaces of the bottom shell and the top shell are in an overlapping state under normal use, so that airflow can be allowed to pass between the bottom shell and the external environment to dissipate heat to the battery cells through airflow. The sealing plate is arranged to isolate the space inside the bottom shell through the horizontal plate. The battery cells are directly installed on the surface of the heat sink to facilitate heat conduction to assist the heat dissipation of the bottom of the battery cells. The arranged wiring terminals can be conveniently electrically connected to the battery cells and output to the power supply demand through the right side. When combustion occurs inside the bottom shell or fire extinguishing agent is filled, the spread from the wiring point or liquid leakage can be effectively avoided. The storage box is arranged to be filled with fire extinguishing agent for falling after the trigger component is triggered by the high temperature of the flame to extinguish the flame of the battery cells. Under normal circumstances, the blanking plate is located on the inner side of the bucket plate, and the bucket plate is located on the inner side of the inclined plate to The inner and outer spaces are isolated to block the fire extinguishing agent from leaking. When the battery cell catches fire, it will affect the trigger component. The hollow tube of the hot melt component of the trigger component is made of fusible alloy material, so it will melt when close to the high temperature of the flame. The sliding section without threads on the surface will slide in the adjustment sleeve. The top shell as a whole will lack support and fall along the bottom shell. During this process, the trigger rod at the top of the beam will press the blanking plate, which will be lifted up and create a gap along the bucket plate. The bucket plate and the inclined plate will also be stressed to create gaps. As the gap gradually expands, the fire extinguishing agent will gradually fall from the gap and fall on the top of the battery cell. After the top shell falls along the bottom shell, the matching groove and the window groove are staggered. At this time, the outside of the battery cell is in a relatively sealed state, blocking the external air to prevent the flame from continuing to burn. The fire extinguishing agent will accumulate inside the bottom shell to soak the battery cell for a continuous flame retardant effect.

[0013] The present invention is further configured as follows: the heat sink includes an adhesive sheet, the top of the adhesive sheet is bonded to the heat sink, the bottom of the adhesive sheet is fixedly connected with a clamping segment, the bottom of the clamping segment is provided with a contact segment, the contact segment and the clamping segment are integrally formed, and the clamping segment is bonded to the horizontal plate.

[0014] By adopting the above technical solution, an adhesive sheet is arranged to be in direct contact with the heat sink, and the bottom structure and the top heat sink are connected to conduct heat. The arranged clamping segment is clamped on the outside of the horizontal plate. The raised clamping segment can prevent the structure from being compressed for a long time or displaced by bumps. The arranged contact segment is arranged at the bottom of the bottom shell to directly contact the external cold air flow, which can facilitate the rapid heat dissipation.

[0015] The present invention is further configured as follows: the hot melt component includes a hollow tube, the hollow tube is threadedly connected to the inner side of the adjustment sleeve, the hollow tube is made of a fusible alloy material, the inner side of the hollow tube is fixedly connected to the limit rod, the top of the hollow tube is fixedly connected with a sliding section, the inner side of the sliding section is slidably connected to the limit rod, the top of the sliding section is fixedly connected with a connecting frame, a liquid level sensor is installed on the outer side of the connecting frame, and the top of the connecting frame is fixedly connected with a screw section.

[0016] By adopting the above technical solution, a hollow tube is set, which not only serves as a trigger element but also as a support between the top shell and the bottom shell. The liquid level sensor can detect the amount of fire extinguishing agent when the battery is working normally, and can promptly remind personnel for maintenance when damage or leakage occurs. The set screw segment is directly connected to the top shell, so that in addition to contacting with the limit rod and the adjustment sleeve, the top of the hollow tube is also supported, thereby fixing the relative position between the top shell and the hollow tube.

[0017] The present invention is further configured as follows: a transmission block is fixedly connected to the inner side of the top shell, and the inner side of the transmission block is threadedly connected to the screw rod segment.

[0018] By adopting the above technical solution, the screw rod segment can be easily connected by setting a transmission block. After the trigger component is triggered, the screw rod segment can be rotated along the transmission block to unscrew the structure for later recovery.

[0019] The present invention is further configured as follows: an integrally formed first mating section is provided on the inner side of the inclined plate, an integrally formed second mating section is provided on the inner side of the bucket plate, the bottom of the second mating section is slidably connected to the first mating section, an integrally formed insertion rod is provided on the bottom of the blanking plate, the bottom of the insertion rod is slidably connected to the inner side of the second mating section, a first tension spring is fixedly connected to the bottom of the first tension spring and the bottom of the inner wall of the second mating section is fixedly connected, a second tension spring is fixedly connected to the bottom of the second mating section, and the bottom of the second tension spring is fixedly connected to the bottom of the inner side of the first mating section.

[0020] By adopting the above technical solution, by setting the first matching section and the second matching section and the insertion rod to cooperate with each other, the relative movement between the inclined plate, the bucket plate and the blanking plate can be limited, and they are firmly connected to each other through tension springs, and a certain gap is allowed to be opened for the fire extinguishing agent to fall.

[0021] The present invention is further configured as follows: the bottom of the outer side of the top shell is fixedly connected with a side piece, the outer side of the bottom shell is fixedly connected with an outer plate, the inner side of the outer plate is fixedly connected with an empty can, the inner side of the empty can is fixedly connected with an empty cylinder, a circulation groove is provided on the inner side of the empty cylinder, a push piece is slidably connected with the inner side of the empty cylinder, the top of the push piece is fixedly connected with a vertical rod, the outer side of the vertical rod is slidably connected to the empty can, the top of the vertical rod is fixedly connected to the side piece, the bottom of the push piece is fixedly connected with a vertical tension spring, and the bottom of the vertical tension spring is fixedly connected to the bottom of the inner wall of the empty can.

[0022] By adopting the above technical solution, the empty tank is connected by setting an outer plate. After the trigger assembly is triggered, when the top shell and the internal structure fall, the outer plate presses down the push plate inside the empty cylinder through the vertical rod. The push plate pushes the fluid inside the empty cylinder to flow along the circulation groove. When the liquid circulates, it has a buffering effect to reduce the falling speed of the top shell, so as to reduce the opening speed of the bucket plate, the blanking plate and the inclined plate, so as to extend the flow time of the fire extinguishing agent and improve the fire extinguishing effect. The vertical tension spring is used to continuously generate a force to pull the top shell down, so as to avoid the difficulty of the top shell falling along the bottom shell due to the long-term fixation of the structure.

[0023] The present invention is further configured as follows: a side frame is fixedly connected to the outer side of the top shell, a pressure spring is fixedly connected to the inner side of the side frame, a slip ring is fixedly connected to the side of the pressure spring away from the side frame, and a sealing ring is fixedly connected to the side of the slip ring away from the pressure spring.

[0024] By adopting the above technical solution, a side frame is arranged to cooperate with a pressure spring. The pressure spring presses the slip ring and the sealing ring connected to the slip ring along the side frame. When the top shell falls, the window groove and the matching groove are staggered. At this time, the edge of the window groove will push the sealing ring and make the sealing ring fit against the surface of the bottom shell to improve the sealing performance and reduce the possibility of airflow entering.

[0025] The present invention is further configured as follows: an air flow opening is opened on the inner side of the bottom shell, and a bracket is fixedly connected to the bottom of the bottom shell.

[0026] By adopting the above technical solution and providing the air flow opening, the space separated at the bottom of the bottom shell can be in contact with the external air flow, so as to improve the heat dissipation effect of the internal components.

[0027] The present invention is further configured as follows: an extension rod is fixedly connected to the top of the inner side of the top shell, and a blocking piece is fixedly connected to the bottom of the extension rod.

[0028] By adopting the above technical solution, by setting an extension rod and a blocking piece, the bottom window groove can be further blocked. Since fire extinguishing agent will accumulate inside the bottom shell after triggering, setting a blocking piece for further blocking can avoid leakage inside the bottom window groove.

[0029] The present invention is further configured as follows: a fiber fabric layer is fixedly connected to the outer side of the blocking piece, and a bentonite filler is filled on the inner side of the fiber fabric layer.

[0030] By adopting the above technical solution, a fiber fabric layer is set to wrap the bentonite filler. When the bentonite filler contacts the liquid, its particles will absorb a large amount of water and expand several times in volume. This expansion reduces the gaps between the bentonite particles and arranges them tightly to form a waterproof gel layer, thereby preventing fluid leakage.

[0031] (III) Beneficial effects

[0032] Compared with the prior art, the present invention provides a flame retardant device based on the cascade utilization of new energy vehicle batteries, which has the following beneficial effects:

[0033] The flame retardant device based on the cascade utilization of new energy vehicle batteries is provided with a bottom shell matching with a top shell. The window grooves and matching grooves respectively opened on the surfaces of the bottom shell and the top shell are in an overlapped state under normal use, so that airflow can pass between the bottom shell and the external environment to dissipate heat to the battery cell through the airflow. The battery cell is directly installed on the surface of the heat sink to facilitate heat conduction to assist the heat dissipation of the bottom of the battery cell. The provided wiring terminals can be conveniently electrically connected to the battery cell and output to the power supply demand through the right side. When combustion occurs inside the bottom shell or the fire extinguishing agent is filled, the spread from the wiring or liquid leakage can be effectively avoided. The fire extinguishing agent filled in the provided storage box is used to fall after the trigger component is triggered by the high temperature of the flame to extinguish the flame of the battery cell, and when the battery cell catches fire The trigger assembly will be affected. The hollow tube of the hot-melt assembly of the trigger assembly is made of fusible alloy material, so it will melt when close to the high temperature of the flame. The sliding section without threads on the surface will slide in the adjustment sleeve, and the top shell as a whole will lack support and fall along the bottom shell. During this process, the trigger rod on the top of the beam will press the blanking plate, which will be lifted up and create a gap along the bucket plate. The bucket plate and the inclined plate will also be subjected to force to create gaps. As the gaps gradually expand, the fire extinguishing agent will gradually fall from the gaps and fall on the top of the battery cell. After the top shell falls along the bottom shell, the matching groove and the window groove are staggered. At this time, the outside of the battery cell is in a relatively sealed state, blocking the external air to prevent the flame from continuing to burn. The fire extinguishing agent will accumulate inside the bottom shell to soak the battery cell for a continuous flame retardant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the top shell and bottom shell structure in the present invention;

[0035] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0036] Figure 3 It is a structural schematic diagram of the sealing plate in the present invention;

[0037] Figure 4 It is a schematic diagram of the structure of the trigger component in the present invention;

[0038] Figure 5 It is an internal schematic diagram of the main structure of the present invention;

[0039] Figure 6 It is a schematic structural diagram of the hot melt assembly of the present invention;

[0040] Figure 7 It is a schematic structural diagram of the hot melt assembly of the present invention;

[0041] Figure 8 It is a structural schematic diagram of an empty can of the present invention;

[0042] Fig. 9 It is a structural schematic diagram of the heat dissipation plate of the present invention;

[0043] Fig.10 It is a schematic diagram of the structure of the blocking piece of the present invention.

[0044] In the figure: 1, bottom shell; 2, top shell; 3, storage box; 4, sealing plate; 401, horizontal plate; 402, terminal; 403, heat sink; 403a, adhesive sheet; 403b, clamping section; 403c, contact section; 404, heat sink; 5, trigger assembly; 501, pad; 502, inclined plate; 503, bucket plate; 504, blanking plate; 505, hot melt assembly; 505a, hollow tube; 505b, sliding section; 505c, connecting frame; 505d, screw rod section; 506, adjustment sleeve; 6, beam frame; 7, trigger rod; 8, window slot; 9, matching slot; 10, limit rod; 11, transmission block; 12, first matching section; 13, second matching section; 14, insertion rod; 15, first tension spring; 16, second tension spring; 17, side plate; 18, outer plate; 19, empty can; 20, empty cylinder; 21, circulation slot; 22, push plate; 23, vertical rod; 24, vertical tension spring; 25, side frame; 26, pressure spring; 27, slip ring; 28, sealing ring; 29, air flow port; 30, bracket; 31, extension rod; 32, blocking plate; 33, fiber fabric layer; 34, bentonite filler. DETAILED DESCRIPTION

[0045] 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 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 creative work are within the scope of protection of the present invention.

[0046] Example 1, please refer to Figure 1-10A flame retardant device based on the cascade utilization of new energy vehicle batteries comprises a bottom shell 1, a top shell 2 and a storage box 3. The top shell 2 is slidably connected to the outer side of the bottom shell 1, the storage box 3 is arranged on the top of the top shell 2, the storage box 3 and the top shell 2 are integrally formed, a sealing plate 4 is fixedly connected to the inner wall of the bottom shell 1, a trigger assembly 5 is fixedly connected to the bottom of the storage box 3, a beam frame 6 is fixedly connected to the inner side of the bottom shell 1, a trigger rod 7 is fixedly connected to the top of the beam frame 6, a window groove 8 is opened on the outer side of the bottom shell 1, a matching groove 9 is opened on the outer side of the top shell 2, the inner side of the storage box 3 is filled with a fire extinguishing agent, and a limit rod 10 is fixedly connected to the top of the beam frame 6;

[0047] The trigger assembly 5 includes a backing plate 501, which is fixedly connected to the inner side of the storage box 3, a slanted plate 502 is fixedly connected to the inner side of the backing plate 501, a bucket plate 503 is movably connected to the inner side of the slanted plate 502, a blanking plate 504 is movably connected to the inner side of the bucket plate 503, an adjustment sleeve 506 is fixedly connected to the inner side of the backing plate 501, and a hot melt assembly 505 is provided on the inner side of the adjustment sleeve 506;

[0048] By arranging the bottom shell 1 to match the top shell 2, the window groove 8 and the matching groove 9 respectively opened on the surface of the bottom shell 1 and the top shell 2 are in an overlapping state under normal use, so that airflow can be allowed to pass between the bottom shell 1 and the external environment to dissipate the heat of the battery cell through the airflow. The storage box 3 is filled with a fire extinguishing agent for falling down after the trigger component 5 is triggered by the high temperature of the flame to extinguish the flame of the battery cell. Under normal circumstances, the blanking plate 504 is located on the inner side of the bucket plate 503, and the bucket plate 503 is located on the inner side of the inclined plate 502 to isolate the inner and outer spaces of the storage box 3, blocking the fire extinguishing agent from leaking. When the battery cell catches fire, it will affect the trigger component 5. The hollow tube 505a of the hot melt component 505 of the trigger component 5 is made of a fusible alloy material. , so it will melt near the high temperature of the flame, the sliding section 505b without a thread on the surface will slide in the adjustment sleeve 506, the top shell 2 as a whole will lack support and fall along the bottom shell 1, during this process, the trigger rod 7 on the top of the beam 6 will press the blanking plate 504, the blanking plate 504 will be lifted up, and a gap will be generated along the bucket plate 503, the bucket plate 503 and the inclined plate 502 will also be stressed to generate a gap, and the gap will gradually expand while the fire extinguishing agent will gradually fall from the gap and fall on the top of the battery cell, after the top shell 2 falls along the bottom shell 1, the matching groove 9 and the window groove 8 are staggered, at this time, the outside of the battery cell is in a relatively sealed state, blocking the external air to prevent the flame from continuing to burn, and the fire extinguishing agent will accumulate inside the bottom shell 1 to soak the battery cell to achieve a continuous flame retardant effect.

[0049] Among them, the hot melt component 505 includes a hollow tube 505a, which is threadedly connected to the inner side of the adjustment sleeve 506, and is made of a fusible alloy material. The inner side of the hollow tube 505a is fixedly connected to the limit rod 10, and the top of the hollow tube 505a is fixedly connected with a sliding section 505b, and the inner side of the sliding section 505b is slidably connected to the limit rod 10, and the top of the sliding section 505b is fixedly connected with a connecting frame 505c, and a liquid level sensor is installed on the outer side of the connecting frame 505c, and a screw rod section 505d is fixedly connected to the top of the connecting frame 505c. By setting the hollow tube 505a, in addition to serving as a trigger element, it also serves as a support between the top shell 2 and the bottom shell 1. The liquid level sensor can detect the amount of fire extinguishing agent when the battery is working normally. When damage or leakage occurs, maintenance personnel can be reminded in time. The screw segment 505d is directly connected to the top shell 2, so that the top of the hollow tube 505a is supported in addition to contacting with the limit rod 10 and the adjustment sleeve 506, and the relative position between the top shell 2 and the hollow tube 505a is fixed. The inner side of the top shell 2 is fixedly connected with a transmission block 11, and the inner side of the transmission block 11 is threadedly connected to the screw segment 505d. By setting the transmission block 11, it is convenient to connect the screw segment 505d. After the trigger assembly 5 is triggered, the screw segment 505d can be rotated along the transmission block 11 to screw out the structure for later recovery. The inner side of the inclined plate 502 is provided with an integrally formed first matching segment 12, and the inner side of the bucket plate 503 is provided with an integrally formed second matching segment 13. The bottom of the second mating section 13 is slidably connected to the first mating section 12, and the bottom of the blanking plate 504 is provided with an integrally formed plug rod 14, and the bottom of the plug rod 14 is slidably connected to the inner side of the second mating section 13, and the bottom of the plug rod 14 is fixedly connected to the first tension spring 15, and the bottom of the first tension spring 15 is fixedly connected to the bottom of the inner wall of the second mating section 13, and the bottom of the second mating section 13 is fixedly connected to the second tension spring 16, and the bottom of the second tension spring 16 is fixedly connected to the bottom of the inner side of the first mating section 12. By setting the first mating section 12 and the second mating section 13 and the plug rod 14 to cooperate and plug in with each other, the relative movement between the inclined plate 502, the bucket plate 503 and the blanking plate 504 can be limited, and the tension springs are connected to each other to stabilize and allow a certain opening. The gap is for the fire extinguishing agent to fall, the bottom of the outer side of the top shell 2 is fixedly connected with a side piece 17, the outer side of the bottom shell 1 is fixedly connected with an outer plate 18, the inner side of the outer plate 18 is fixedly connected with an empty tank 19, the inner side of the empty tank 19 is fixedly connected with an empty cylinder 20, the inner side of the empty cylinder 20 is provided with a flow groove 21, the inner side of the empty cylinder 20 is slidably connected with a push piece 22, the top of the push piece 22 is fixedly connected with a vertical rod 23, the outer side of the vertical rod 23 is slidably connected to the empty tank 19, the top of the vertical rod 23 is fixedly connected to the side piece 17, the bottom of the push piece 22 is fixedly connected with a vertical tension spring 24, the bottom of the vertical tension spring 24 is fixedly connected to the bottom of the inner wall of the empty tank 19, the empty tank 19 is connected by setting the outer plate 18, and after the trigger assembly 5 is triggered, when the top shell 2 and the internal structure fall,The outer disk 18 presses the push piece 22 inside the empty cylinder 20 through the vertical rod 23. The push piece 22 pushes the fluid inside the empty cylinder 20 to flow along the circulation groove 21. When the liquid circulates, it has a buffering effect to reduce the falling speed of the top shell 2, so as to reduce the opening speed of the bucket plate 503, the blanking plate 504 and the inclined plate 502, so that the flow time of the fire extinguishing agent is prolonged and the extinguishing effect is improved. The vertical tension spring 24 is used to continuously generate a force to pull the top shell 2 down to avoid the top shell 2 being difficult to fall along the bottom shell 1 due to the long-term fixation of the structure. The outer side of the top shell 2 is fixedly connected to the side frame 25, and the inner side of the side frame 25 is fixedly connected to the pressure spring 26. The side of the pressure spring 26 away from the side frame 25 is fixedly connected to the slip ring 27, and the side of the slip ring 27 away from the pressure spring 26 is fixedly connected to the sealing ring 28. By setting the side frame 25 to cooperate with The pressing spring 26 presses the sliding ring 27 and the sealing ring 28 connected to the sliding ring 27 along the side frame 25. When the top shell 2 falls, the window groove 8 and the matching groove 9 are staggered. At this time, the edge of the window groove 8 will push the sealing ring 28 and make the sealing ring 28 fit the surface of the bottom shell 1 to improve the sealing performance and reduce the possibility of airflow entering. The outer side of the blocking piece 32 is fixedly connected with a fiber fabric layer 33, and the inner side of the fiber fabric layer 33 is filled with bentonite filler 34. By setting the fiber fabric layer 33 to wrap the bentonite filler 34, when the bentonite filler 34 contacts the liquid, its particles will absorb a large amount of water and expand several times in volume. This expansion reduces the gaps between the bentonite particles and arranges them tightly to form a waterproof gel layer, thereby preventing fluid leakage.

[0050] The working principle of this embodiment: when in use, the bottom shell 1 cooperates with the top shell 2 as the storage shell of the battery cell. The window groove 8 and the matching groove 9 are overlapped under normal use, so they are connected to the external environment to allow airflow to pass through to dissipate heat from the battery cell through airflow. Under normal circumstances, the blanking plate 504 is located on the inner side of the bucket plate 503, and the bucket plate 503 is located on the inner side of the inclined plate 502 to isolate the inner and outer spaces of the storage box 3. When the battery cell catches fire, the hollow tube 505a of the hot melt component 505 is made of fusible alloy material, so it will melt when close to the high temperature of the flame. The sliding section 505b without threads on the surface will slide in the adjustment sleeve 506, and the top shell 2 as a whole will lack support and fall along the bottom shell 1. During this process, the trigger rod 7 on the top of the beam 6 will press the blanking plate 504, the blanking plate 504 will be lifted up, and a gap will be generated along the bucket plate 503. The first tension spring 15 and the second tension spring 16 are stretched and the amount of elongation of the gap is limited. 502 will also be stressed to produce gaps. As the gaps gradually expand, the fire extinguishing agent will gradually fall from the gaps and fall on the top of the battery cell. The outer disk 18 is connected to the empty tank 19. After the trigger assembly 5 is triggered, when the top shell 2 and the internal structure fall, the outer disk 18 presses the push piece 22 inside the empty cylinder 20 through the vertical rod 23. The push piece 22 pushes the fluid inside the empty cylinder 20 to flow along the flow groove 21. When the liquid circulates, it has a buffering effect to reduce the falling speed of the top shell 2, so as to reduce the opening speed of the bucket plate 503, the blanking plate 504 and the inclined plate 502, so that the flow time of the fire extinguishing agent is extended. After the top shell 2 falls along the bottom shell 1, the positions of the matching groove 9 and the window groove 8 are staggered. At this time, the outside of the battery cell is in a relatively sealed state, blocking the external air to prevent the flame from continuing to burn. The fire extinguishing agent will accumulate inside the bottom shell 1 to soak the battery cell and have a continuous flame retardant effect. The liquid level sensor can detect the amount of fire extinguishing agent when the battery is working normally, and can promptly remind personnel for maintenance when damage or leakage occurs.

[0051] Example 2, reference Figure 2 , Figure 3 and Fig. 9 A flame retardant device based on the cascade utilization of new energy vehicle batteries also includes a sealing plate 4, wherein the sealing plate 4 includes a horizontal plate 401, the outer side of the horizontal plate 401 is fixedly connected to the bottom shell 1, the inner side of the horizontal plate 401 is equipped with a terminal 402, and the side of the terminal 402 away from the horizontal plate 401 is clamped at the bottom of the right side of the bottom shell 1, the inner side of the horizontal plate 401 is fixedly connected with a heat sink 403, the top of the heat sink 403 is fixedly connected with a heat sink 404, and the top of the heat sink 404 is installed with the battery cell;

[0052] The sealing plate 4 is used to isolate the space inside the bottom shell 1 through the horizontal plate 401. The battery cells are directly installed on the surface of the heat sink 403 to facilitate heat conduction to assist the heat dissipation at the bottom of the battery cells. The terminal 402 is convenient to be electrically connected to the battery cells and output to the power supply demand through the right side. When combustion occurs inside the bottom shell 1 or the fire extinguishing agent is filled, it can effectively prevent the spread from the wiring or liquid leakage.

[0053] The heat sink 403 includes an adhesive sheet 403a, the top of the adhesive sheet 403a is bonded to the heat sink 404, the bottom of the adhesive sheet 403a is fixedly connected with a clamping section 403b, the bottom of the clamping section 403b is provided with a contact section 403c, the contact section 403c and the clamping section 403b are integrally formed, and the clamping section 403b is bonded to the horizontal plate 401;

[0054] By setting an adhesive sheet 403a to directly contact the heat sink 404 and connect the bottom structure and the top heat sink 404, the heat sink is used to conduct heat, and the clamping section 403b is used to clamp on the outside of the horizontal plate 401. The raised clamping section 403b can prevent the structure from being compressed for a long time or being displaced by bumps. The contact section 403c is set at the bottom of the bottom shell 1 and directly contacts with the external cold air flow to facilitate rapid heat conduction. An air flow port 29 is opened on the inner side of the bottom shell 1, and a bracket 30 is fixedly connected to the bottom of the bottom shell 1. By setting the air flow port 29, the space separated at the bottom of the bottom shell 1 can be in contact with the external air flow to enhance the heat dissipation effect of the internal components. By setting an extension rod 31 and cooperating with a blocking piece 32, the bottommost window slot 8 is further blocked. Since the fire extinguishing agent will accumulate inside the bottom shell 1 after being triggered, the blocking piece 32 is set to further block it to avoid leakage inside the bottommost window slot 8.

[0055] Working principle of this embodiment: when in use, the sealing plate 4 isolates the space inside the bottom shell 1 through the horizontal plate 401, and the battery cell is directly installed on the surface of the heat sink 403 to facilitate heat conduction to assist the heat dissipation at the bottom of the battery cell. The provided terminal 402 is used to electrically connect with the battery cell and output to the power supply demand through the right side. When combustion occurs inside the bottom shell 1 or the fire extinguishing agent is filled, the spread from the wiring point or liquid leakage can be effectively avoided. The adhesive sheet 403a is in direct contact with the heat sink 404, and the bottom of the battery cell is in direct contact with the heat sink 404 to conduct the heat on its surface when the battery cell is in use. The clamping segment 403b connects the bottom structure and the top heat sink, and the clamping segment 403b is used to be clamped on the outside of the horizontal plate 401. The raised clamping segment 403b is set to prevent the structure from being compressed for a long time or displaced by bumps, resulting in the bottom of the structure being unsealed. The contact segment 403c is arranged at the bottom of the bottom shell 1 and directly contacts the external cold air flow to facilitate the rapid heat dissipation.

[0056] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to the present embodiment as needed. Although the embodiments of the present invention have been shown and described, it is understandable to those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flame retardant device based on the cascade utilization of new energy vehicle batteries, comprising a bottom shell (1), a top shell (2) and a storage box (3), characterized in that: The top shell (2) is slidably connected to the outside of the bottom shell (1); the storage box (3) is arranged on the top of the top shell (2); the storage box (3) and the top shell (2) are integrally formed; the inner wall of the bottom shell (1) is fixedly connected to a sealing plate (4); the bottom of the storage box (3) is fixedly connected to a trigger assembly (5); the inner side of the bottom shell (1) is fixedly connected to a beam frame (6); the top of the beam frame (6) is fixedly connected to a trigger rod (7); the outer side of the bottom shell (1) is provided with a window groove (8); the outer side of the top shell (2) is provided with a matching groove (9); the inner side of the storage box (3) is filled with fire extinguishing agent; the top of the beam frame (6) is fixedly connected to a limit rod (10); The sealing plate (4) comprises a horizontal plate (401), the outer side of the horizontal plate (401) is fixedly connected to the bottom shell (1), the inner side of the horizontal plate (401) is provided with a terminal (402), the side of the terminal (402) away from the horizontal plate (401) is clamped to the bottom of the right side of the bottom shell (1), the inner side of the horizontal plate (401) is fixedly connected to a heat sink (403), the top of the heat sink (403) is fixedly connected to a heat sink (404), and the top of the heat sink (404) is installed with a battery cell; The trigger assembly (5) comprises a pad (501), the pad (501) being fixedly connected to the inner side of the storage box (3), the inner side of the pad (501) being fixedly connected to an inclined plate (502), the inner side of the inclined plate (502) being movably connected to a bucket plate (503), the inner side of the bucket plate (503) being movably connected to a blanking plate (504), the inner side of the pad (501) being fixedly connected to an adjustment sleeve (506), and the inner side of the adjustment sleeve (506) being provided with a hot melt assembly (505).

2. A flame retardant device based on the cascade utilization of new energy vehicle batteries according to claim 1, characterized in that: The heat sink (403) comprises an adhesive sheet (403a), the top of the adhesive sheet (403a) is bonded to the heat sink (404), the bottom of the adhesive sheet (403a) is fixedly connected with a clamping section (403b), the bottom of the clamping section (403b) is provided with a contact section (403c), the contact section (403c) and the clamping section (403b) are integrally formed, and the clamping section (403b) is bonded to the horizontal plate (401).

3. A flame retardant device based on the cascade utilization of new energy vehicle batteries according to claim 1, characterized in that: The hot melt component (505) comprises a hollow tube (505a), wherein the hollow tube (505a) is threadedly connected to the inner side of the adjustment sleeve (506), the hollow tube (505a) is made of a fusible alloy material, the inner side of the hollow tube (505a) is fixedly connected to the limit rod (10), the top of the hollow tube (505a) is fixedly connected to a sliding section (505b), the inner side of the sliding section (505b) is slidably connected to the limit rod (10), the top of the sliding section (505b) is fixedly connected to a connecting frame (505c), the outer side of the connecting frame (505c) is equipped with a liquid level sensor, and the top of the connecting frame (505c) is fixedly connected to a screw section (505d).

4. A flame retardant device based on the cascade utilization of new energy vehicle batteries according to claim 3, characterized in that: A transmission block (11) is fixedly connected to the inner side of the top shell (2), and the inner side of the transmission block (11) is threadedly connected to the lead screw segment (505d).

5. A flame retardant device based on the cascade utilization of new energy vehicle batteries according to claim 1, characterized in that: The inner side of the inclined plate (502) is provided with an integrally formed first mating section (12), the inner side of the bucket plate (503) is provided with an integrally formed second mating section (13), the bottom of the second mating section (13) is slidably connected to the first mating section (12), the bottom of the blanking plate (504) is provided with an integrally formed insertion rod (14), the bottom of the insertion rod (14) is slidably connected to the inner side of the second mating section (13), the bottom of the insertion rod (14) is fixedly connected to a first tension spring (15), the bottom of the first tension spring (15) is fixedly connected to the bottom of the inner wall of the second mating section (13), the bottom of the second mating section (13) is fixedly connected to a second tension spring (16), the bottom of the second tension spring (16) is fixedly connected to the bottom of the inner side of the first mating section (12).

6. A flame retardant device based on the cascade utilization of new energy vehicle batteries according to claim 1, characterized in that: The bottom of the outer side of the top shell (2) is fixedly connected to a side piece (17), the outer side of the bottom shell (1) is fixedly connected to an outer plate (18), the inner side of the outer plate (18) is fixedly connected to an empty can (19), the inner side of the empty can (19) is fixedly connected to an empty cylinder (20), the inner side of the empty cylinder (20) is provided with a flow groove (21), the inner side of the empty cylinder (20) is slidably connected to a push piece (22), the top of the push piece (22) is fixedly connected to a vertical rod (23), the outer side of the vertical rod (23) is slidably connected to the empty can (19), the top of the vertical rod (23) is fixedly connected to the side piece (17), the bottom of the push piece (22) is fixedly connected to a vertical tension spring (24), and the bottom of the vertical tension spring (24) is fixedly connected to the bottom of the inner wall of the empty can (19).

7. A flame retardant device based on the cascade utilization of new energy vehicle batteries according to claim 1, characterized in that: The outer side of the top shell (2) is fixedly connected to a side frame (25), the inner side of the side frame (25) is fixedly connected to a pressure spring (26), a side of the pressure spring (26) away from the side frame (25) is fixedly connected to a slip ring (27), and a side of the slip ring (27) away from the pressure spring (26) is fixedly connected to a sealing ring (28).

8. A flame retardant device based on the cascade utilization of new energy vehicle batteries according to claim 1, characterized in that: An air flow opening (29) is provided on the inner side of the bottom shell (1), and a bracket (30) is fixedly connected to the bottom of the bottom shell (1).

9. A flame retardant device based on the cascade utilization of new energy vehicle batteries according to claim 1, characterized in that: An extension rod (31) is fixedly connected to the top of the inner side of the top shell (2), and a blocking piece (32) is fixedly connected to the bottom of the extension rod (31).

10. A flame retardant device based on the cascade utilization of new energy vehicle batteries according to claim 9, characterized in that: A fiber fabric layer (33) is fixedly connected to the outer side of the blocking piece (32), and a bentonite filler (34) is filled on the inner side of the fiber fabric layer (33).

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