Flameproof battery system

Abstract

The application provides a self-ignition prevention battery system, relates to the technical field of battery protection, and solves the problems of explosion and detonation caused by battery thermal runaway to some extent. The self-ignition prevention battery system comprises a shell, a battery pack, a lifting mechanism and a gas container. The lifting mechanism, the gas container and the battery pack are arranged in the shell, the gas container is located at the bottom of the battery pack, and the battery pack is fixedly connected to the top wall in the shell. The lifting mechanism comprises a trigger assembly and a linear driving assembly, the output end of the linear driving assembly is connected to the trigger assembly, the gas container comprises a container main body and a sealing cover, the container main body is formed with a gas nozzle, and the sealing cover is detachably arranged on the gas nozzle. The trigger assembly is arranged corresponding to the sealing cover, the linear driving assembly can drive the trigger assembly to move towards the direction of approaching or moving away from the sealing cover, and the sealing cover is opened.

Description

Technical Field

[0001] This invention relates to the field of battery protection technology, and in particular to a battery system for preventing spontaneous combustion. Background Technology

[0002] There is an urgent need to provide a battery system that prevents spontaneous combustion, in order to address the problems existing in the current technology to some extent. Summary of the Invention

[0003] The purpose of this invention is to provide a battery system to prevent spontaneous combustion, thereby solving the problem of deflagration and explosion caused by battery thermal runaway to a certain extent.

[0004] This invention provides an anti-self-ignition battery system, comprising a housing, a battery pack, a lifting mechanism, and a gas container. The lifting mechanism, the gas container, and the battery pack are all disposed within the housing, with the gas container located at the bottom of the battery pack. The battery pack is fixedly connected to the top wall within the housing. The lifting mechanism includes a trigger component and a linear drive component. The output end of the linear drive component is connected to the trigger component. The gas container includes a container body and a sealing cap. The container body has a nozzle, and the sealing cap is detachably mounted on the nozzle. The trigger component is positioned corresponding to the sealing cap, and the linear drive component can drive the trigger component to move towards or away from the sealing cap, thereby opening the sealing cap.

[0005] The self-ignition-proof battery system provided in this application also includes a locking mechanism, which is installed on the housing at the position corresponding to the trigger component and is capable of locking or releasing the lifting mechanism.

[0006] Specifically, the linear drive assembly includes an elastic telescopic rod, a lifting frame, and a gear shift lever; the fixed end of the elastic telescopic rod is connected to the top inner wall of the housing, and the telescopic end is connected to the lifting frame, for applying a downward driving force to the lifting frame, enabling the lifting frame to move away from the gas container; the gear shift lever is vertically arranged and connected to the lifting frame, and the triggering component is installed at the end of the gear shift lever away from the lifting frame, such that the triggering component is initially spaced apart from the sealing cover; the locking mechanism can lock or release the gear shift lever.

[0007] Furthermore, the trigger assembly includes a trigger rack and a mounting bracket, the trigger rack being fixed to the side of the gear shift lever via the mounting bracket; the outer peripheral wall of the sealing cover is formed with meshing teeth, and the trigger rack is used to mesh with the meshing teeth to drive the sealing cover to rotate and disengage from the jet nozzle when it moves down with the gear shift lever.

[0008] Furthermore, the locking mechanism includes a first locking component and a second locking component arranged at intervals along the vertical direction. The gear shift slide has a first slot corresponding to the position of the first locking component and a second slot corresponding to the position of the second locking component. The first locking component and the second locking component can extend and retract relative to the gear shift slide so that the first locking component is inserted into the first slot and the second locking component is inserted into the second slot.

[0009] The self-ignition-proof battery system provided in this application also includes a reset mechanism, which includes a winding drive, a winch, and a pull rope. The output end of the winding drive is connected to the winch, the pull rope is wound around the winch, and the free end of the pull rope is connected to the top end of the gear shift lever for pulling the gear shift lever upward to reset it.

[0010] Specifically, the self-ignition-proof battery system provided in this application further includes an isolation box, which is fixed inside the outer shell. The locking mechanism and the reset mechanism are both disposed inside the isolation box. The isolation box includes a box body, a first partition, and a second partition. The first partition and the second partition are arranged parallel to each other inside the box body to form three independent chambers. The first locking component and the second locking component are respectively disposed in two of the chambers and are disposed corresponding to the first slot and the second slot. The reset mechanism is disposed in the topmost chamber.

[0011] The self-ignition-proof battery system provided in this application also includes a safety rope. The sealing cover is connected to the gas container through the safety rope. The inner wall of the outer shell has a storage part corresponding to the position of the air nozzle, and the diameter of the storage part is larger than the diameter of the sealing cover.

[0012] Specifically, the lifting frame includes multiple corner plates, longitudinal plates, and transverse plates; the corner plates are slidably connected to the four inner corners of the outer shell, and one longitudinal plate is suspended at the bottom of every two corner plates, and two transverse plates are suspended at the bottom of the two longitudinal plates; the telescopic end of the elastic telescopic rod is connected to the end of the longitudinal plate.

[0013] Furthermore, the self-ignition-proof battery system provided in this application also includes a sealing base plate, which is installed on the side of the lifting frame away from the gas container, and the bottom of the sealing base plate is provided with multiple sealing strips; the bottom of the outer shell is provided with multiple heat dissipation vents, and the sealing strips are arranged one-to-one with the heat dissipation vents. When the lifting frame moves down, the sealing strips are inserted into the heat dissipation vents.

[0014] Compared with existing technologies, the self-ignition prevention battery system provided by this invention has the following advantages: The self-ignition-proof battery system provided by this invention includes a shell, a battery pack, a lifting mechanism, and a gas container. The lifting mechanism, the gas container, and the battery pack are all disposed inside the shell, with the gas container located at the bottom of the battery pack, and the battery pack fixedly connected to the top wall inside the shell. The lifting mechanism includes a trigger component and a linear drive component, with the output end of the linear drive component connected to the trigger component. The gas container includes a container body and a sealing cap, with a nozzle formed on the container body and a sealing cap detachably mounted on the nozzle. The trigger component is disposed corresponding to the sealing cap, and the linear drive component can drive the trigger component to move towards or away from the sealing cap, thereby opening the sealing cap.

[0015] Analysis shows that the outer casing forms a closed enclosure, and the battery pack can be mounted on the inner top wall of the casing using a bracket or other structure. The suspended installation method allows the battery pack to be fixed in place, maintaining a certain distance from the bottom of the casing, facilitating airflow from below for cooling. Simultaneously, a gas container is located below the battery pack; this gas container is flat and closely attached to the bottom of the battery pack. When fire extinguishing is required, the released extinguishing gas can directly act on the surface of the battery pack and the surrounding environment, ensuring effective cooling and fire extinguishing.

[0016] The gas container stores a highly compressed mixture of extinguishing gases, such as carbon dioxide, heptafluoropropane, or one or more inert gases. The main body of the gas container has a nozzle, and the nozzle outlet is fitted with a detachable sealing cap via a threaded connection.

[0017] The lifting mechanism is located inside the housing, and the lifting mechanism obtained in this application includes a trigger component and a linear drive component. The linear drive component can adopt an elastic drive structure or an electric drive structure, such as an electric push rod. By connecting the output end to the trigger component, the position of the trigger component is opposite to the sealing cover, that is, the trigger component is aligned with the sealing cover and maintains an initial distance. So when the battery pack experiences thermal runaway and the jet nozzle needs to be opened, the linear drive component starts and drives the trigger component to move towards the sealing cover until the trigger component contacts the sealing cover and continuously applies a thrust, causing the sealing cover to detach from the jet nozzle.

[0018] At this time, the high-pressure extinguishing gas inside the gas container is rapidly ejected through the nozzle, filling the entire internal space of the outer shell, thereby rapidly cooling the battery pack, diluting the flammable gas, and extinguishing the open flame. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the self-ignition-proof battery system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the self-ignition-proof battery system provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the sealing base plate in the self-ignition-proof battery system provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the assembly of the gas container in the self-ignition-proof battery system provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the gas container in the self-ignition-proof battery system provided in an embodiment of the present invention; Figure 6 for Figure 5 Enlarged view of part A in the middle; Figure 7 This is a schematic diagram of the internal structure of the casing in the self-ignition-proof battery system provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the lifting mechanism in the self-ignition-proof battery system provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the internal structure of the isolation box in the self-ignition-proof battery system provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the gear shift lever and trigger assembly in the self-ignition prevention battery system provided in an embodiment of the present invention.

[0021] In the diagram: 1-Outer shell; 101-Heat dissipation vent; 102-Storage section; 2-Battery pack; 3-Corner plate; 4-Vertical frame; 5-Horizontal frame; 6-Gear slide bar; 601-First slot; 602-Second slot; 7-Slide; 8-Assembly frame; 9-Trigger rack; 10-Elastic telescopic rod; 11-Gas container; 12-Air nozzle; 13-Sealing cover; 1301-Meshing teeth; 1302-Safety rope; 1303-Ring plate; 14-Isolation box; 1401-First partition; 1402-Second partition; 15-First locking drive; 1501-First locking plate; 16-Second locking drive; 1601-Second locking plate; 17-Rewinding drive; 18-Windlass; 19-Pull rope; 20-Pulley; 21-Sealing base plate; 22-Sealing strip. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0027] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device during use or operation.

[0028] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0029] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0030] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have various constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis that they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0031] like Figures 1-8 As shown, the present invention provides an anti-self-ignition battery system, including a housing 1, a battery pack 2, a lifting mechanism, and a gas container 11; the lifting mechanism, the gas container 11, and the battery pack 2 are all disposed inside the housing 1, and the gas container 11 is located at the bottom of the battery pack 2, and the battery pack 2 is fixedly connected to the top wall inside the housing 1; the lifting mechanism includes a trigger component and a linear drive component, the output end of the linear drive component is connected to the trigger component, the gas container 11 includes a container body and a sealing cover 13, the container body forms a nozzle 12, and the sealing cover 13 is detachably installed on the nozzle 12; the trigger component is disposed corresponding to the sealing cover 13, and the linear drive component can drive the trigger component to move towards or away from the sealing cover 13 and open the sealing cover 13.

[0032] Compared with existing technologies, the self-ignition prevention battery system provided by this invention has the following advantages: The self-ignition-proof battery system provided by this invention forms a closed containment space through the outer shell 1. The battery pack 2 can be installed on the inner top wall of the outer shell 1 through a bracket or other structure. The battery pack 2 can be suspended and fixed in the air by a hanging installation method, maintaining a certain distance from the bottom of the outer shell 1 to facilitate airflow from below for cooling. Simultaneously, a gas container 11 is provided below the battery pack 2. In this application, the gas container 11 is flat and closely attached to the bottom of the battery pack 2. When fire extinguishing is required, the fire extinguishing gas can be sprayed out and directly act on the surface of the battery pack 2 and the surrounding environment, ensuring cooling and fire extinguishing effects.

[0033] The gas container 11 contains a highly compressed mixture of extinguishing gases, such as carbon dioxide, heptafluoropropane, or one or more inert gases. A nozzle 12 is provided on the main body of the gas container 11, and a detachable sealing cap 13 is threadedly connected to the outlet of the nozzle 12.

[0034] The lifting mechanism is located inside the housing 1, and the lifting mechanism obtained in this application includes a trigger component and a linear drive component. The linear drive component can adopt an elastic drive structure or an electric drive structure, such as an electric push rod. By connecting the output end to the trigger component, the position of the trigger component is opposite to the sealing cover 13, that is, the trigger component is aligned with the sealing cover 13 and maintains an initial distance. Thus, when the battery pack 2 experiences thermal runaway and the jet nozzle 12 needs to be opened, the linear drive component starts and drives the trigger component to move towards the sealing cover 13 until the trigger component contacts the sealing cover 13 and continuously applies a pushing force, causing the sealing cover 13 to detach from the jet nozzle 12.

[0035] At this time, the high-pressure fire extinguishing gas inside the gas container 11 is rapidly ejected through the nozzle 12, filling the entire internal space of the outer shell 1, thereby rapidly cooling the battery pack 2, diluting the combustible gas, and extinguishing the open flame.

[0036] Optionally, such as Figures 8-10 As shown, the self-ignition-proof battery system provided in this application also includes a locking mechanism, which is installed on the housing 1 at the position corresponding to the trigger component and can lock or release the lifting mechanism.

[0037] By further configuring a locking mechanism, the lifting mechanism can be locked and released. For example, the locking mechanism can use a plate with a telescopic structure, and correspondingly, a slot is formed on the lifting mechanism. Physical locking is achieved through the insertion of the two. Based on this structure, the lifting mechanism in this application can directly adopt a purely mechanical structure, such as the elastic telescopic rod 10. When the plate and the slot are in the insertion state, the elastic telescopic rod 10 is in the contracted state, and the elastic element is in the compressed state. When the plate disengages from the slot, the elastic element releases its restoring force, pushing the trigger component to move, thereby opening the sealing cover 13 and realizing the opening of the air nozzle 12.

[0038] Therefore, when the locking mechanism is further designed, the lifting mechanism provided in this application can adopt a purely mechanical triggering method. The linkage between the linear drive component and the triggering component does not depend on the remaining power of the battery pack 2. Even if thermal runaway causes a power outage in the entire vehicle, the elastic energy storage element can still reliably operate, releasing the fire extinguishing gas before deflagration occurs. Furthermore, the overall structure is simple, requiring no complex piping and nozzle arrangements, thereby significantly reducing the risk of deflagration and explosion.

[0039] Optionally, such as Figure 2 Combination Figure 4 , Figure 7 , Figure 8 and Figure 10 As shown, the linear drive assembly in this application includes an elastic telescopic rod 10, a lifting frame, and a gear shift slide 6; the fixed end of the elastic telescopic rod 10 is connected to the top inner wall of the housing 1, and the telescopic end is connected to the lifting frame, which is used to apply a downward driving force to the lifting frame, so that the lifting frame can move away from the gas container 11; the gear shift slide 6 is vertically arranged and connected to the lifting frame, and a trigger assembly is installed at the end of the gear shift slide 6 away from the lifting frame, so that the trigger assembly is initially spaced apart from the sealing cover 13; the locking mechanism can lock or release the gear shift slide 6.

[0040] The elastic telescopic rod 10 in this application is a telescopic rod with an internal compression spring. The fixed end can be fixed to the four corners of the top inner wall of the outer casing 1 by bolts or welding. The telescopic end of the elastic telescopic rod 10 is connected to the upper surface of the lifting frame, so that the elastic telescopic rod 10 can always apply a downward thrust to the lifting frame.

[0041] The gear shift lever 6 is a vertically arranged rod. The lower end of the gear shift lever 6 is fixedly connected to the lifting frame, and the gear shift lever 6 is slidably inserted into the slide 7 installed on the inner wall of the outer casing 1. The slide 7 provides vertical guidance for the gear shift lever 6.

[0042] The trigger assembly is installed at the end of the gear shift lever 6 away from the lifting frame. Since there are two nozzles 12 of the gas container 11 in this application, there are two sealing covers 13. Therefore, the trigger assembly in this application is installed on the side of the gear shift lever 6 so that it can accurately correspond to the sealing cover 13.

[0043] In the initial state, the trigger component and the sealing cover 13 are separated by a certain distance in the vertical direction and do not contact each other. The locking mechanism locks the gear slide 6, at which time the elastic telescopic rod 10 is in a compressed state, storing the potential energy for downward movement.

[0044] When the locking mechanism releases the gear shift lever 6, the elastic force of the elastic telescopic rod 10 immediately pushes the lifting frame and gear shift lever 6 downwards. The trigger component moves downwards accordingly and gradually approaches the sealing cover 13, eventually contacting and pushing the sealing cover 13 to rotate and open. Energy is stored in the elastic telescopic rod 10, achieving mechanical drive without an external power source. Even in the event of thermal runaway of the battery pack 2 causing a complete power outage, the spring force remains and can be released normally, unaffected by circuit damage, thus ensuring the reliability and safety of the overall battery system to a certain extent.

[0045] Optionally, such as Figure 10 As shown, the triggering assembly in this application includes a trigger rack 9 and a mounting bracket 8. The trigger rack 9 is fixed to the side of the gear slide bar 6 via the mounting bracket 8. The outer peripheral wall of the sealing cover 13 has meshing teeth 1301. The trigger rack 9 is used to mesh with the meshing teeth 1301 to drive the sealing cover 13 to rotate and disengage from the jet nozzle 12 when it moves down with the gear slide bar 6.

[0046] The trigger rack 9 in this application is a metal strip with a straight tooth profile, similar to a rack. The mounting bracket 8 is a support structure with two or more clamping claws, one end of which is connected to the side wall of the gear shift lever 6, and the cantilever at the other end extends out and fixes the trigger rack 9.

[0047] The toothed surface of the trigger rack 9 faces the direction of the sealing cover 13. The outer peripheral wall of the sealing cover 13 is machined with a complete ring of meshing teeth 1301. The number of teeth of the meshing teeth 1301 matches the trigger rack 9, so that the two can form a meshing relationship.

[0048] The inner hole of the sealing cover 13 is machined with internal threads, and the outer wall of the nozzle 12 is machined with external threads. The sealing cover 13 achieves a seal by screwing itself onto the nozzle 12. In actual use, when the gear shift lever 6 moves downward under the drive of the elastic telescopic lever 10, the trigger rack 9 fixed on the gear shift lever 6 moves downward synchronously. When the trigger rack 9 moves to contact the outer peripheral teeth of the sealing cover 13, the linear motion of the rack pushes the meshing teeth 1301 of the sealing cover 13, forcing the sealing cover 13 to rotate. Since the sealing cover 13 and the nozzle 12 are connected by threads, the rotational motion causes the sealing cover 13 to gradually retract from the nozzle 12 along the thread direction.

[0049] As the trigger rack 9 continues to move downwards, the sealing cap 13 can be completely disengaged from the nozzle 12. Preferably, there are two nozzles 12 in this application, located on opposite sides of the gas container 11, with opposite thread directions. Correspondingly, there are also two trigger racks 9, symmetrically fixed on both sides of the gear shift lever 6, with each trigger rack 9 aligned with one of the two sealing caps 13. During each downward movement of the gear shift lever 6, the two trigger racks 9 simultaneously drive the two sealing caps 13 to rotate in their respective opening directions, achieving synchronous opening of the two nozzles 12.

[0050] Understandably, because the meshing transmission is smooth and reliable and will not slip, the combination of the trigger rack 9 and the sealing cover 13 allows the two sealing covers 13 to open synchronously, so that the extinguishing gas can be sprayed out from two directions, with a larger coverage area and faster release speed. The threaded connection has self-locking properties under normal conditions to prevent loosening due to vibration, while it can be forcibly turned open when triggered, thus taking into account both sealing and reliability.

[0051] Optionally, such as Figure 9 Combination Figure 10 As shown, the locking mechanism in this application includes a first locking component and a second locking component arranged at intervals along the vertical direction. The gear slide 6 has a first locking groove 601 corresponding to the position of the first locking component and a second locking groove 602 corresponding to the position of the second locking component. The first locking component and the second locking component can extend and retract relative to the gear slide 6 so that the first locking component is inserted into the first locking groove 601 and the second locking component is inserted into the second locking groove 602.

[0052] The first positioning component in this application includes a first positioning drive 15 and a first positioning plate 1501, and the second positioning component includes a second positioning drive 16 and a second positioning plate 1601. Both the first positioning drive 15 and the second positioning drive 16 can be electric push rods, micro cylinders, or stepper motors. The positioning plate is installed on the telescopic end of the positioning drive. The two positioning components are fixedly installed inside the isolation box 14, and the positioning plate extends into the interior of the outer shell 1 through a through hole on the inner wall of the outer shell 1.

[0053] The gear lever 6 has a first slot 601 and a second slot 602 on the side facing the locking assembly. These two slots are distributed vertically, and the position of the first slot 601 corresponds to the position of the first locking plate 1501, and the position of the second slot 602 corresponds to the position of the second locking plate 1601.

[0054] The first slot 601 and the second slot 602 are rectangular slots. Accordingly, the front end shape of the card plate matches the slot. Furthermore, since this application requires the vehicle to be sealed in a water-filled state, the vertical dimension of the second slot 602 in this application is larger than that of the first slot 601.

[0055] In actual use, the locking mechanism has three working states. In the initial state, both locking components are in the extended state, the first locking plate 1501 is inserted into the first locking slot 601, and the second locking plate 1601 is inserted into the second locking slot 602, which firmly locks the gear slide bar 6 in the high standby position.

[0056] As the vehicle approaches a flooded section, the control system sends a retraction command only to the first locking drive 15 of the first locking assembly. The first locking plate 1501 disengages from the first locking slot 601, while the second locking assembly remains extended. Because the first locking is released and the second locking slot 602 is larger in the vertical direction, the gear shift lever 6 slides downwards under the thrust of the elastic telescopic rod 10 until the second locking plate 1601 moves from the bottom to the top of the second locking slot 602, abutting against the upper surface of the second locking slot 602, at which point the gear shift lever 6 stops moving. At this time, the lifting frame section moves downwards, and... Figure 3 As shown, since the bottom of the lifting frame in this application is provided with a sealing base plate 21 and a sealing strip 22 is provided on the sealing base plate 21, and the bottom of the outer shell 1 is formed with a heat dissipation vent 101 for heat dissipation, the lower end of the sealing strip 22 can be inserted into the heat dissipation vent 101 to achieve preliminary sealing and waterproofing. At this time, the trigger rack 9 has not yet contacted the sealing cover 13, and the gas container 11 remains sealed.

[0057] When thermal runaway occurs, the control system simultaneously controls the two locking components to retract, and the two locking plates disengage from the first locking slot 601 and the second locking slot 602 respectively. The gear slide bar 6 completely loses its limit and falls rapidly to the bottom under the drive of the elastic telescopic rod 10, simultaneously completing the opening of the sealing cover 13 and the complete sealing of the heat dissipation vent 101.

[0058] Therefore, this application uses a purely mechanical triggering system to simultaneously meet the different requirements of the lifting mechanism's stroke under both wading and waterproofing and thermal runaway flame retardant conditions. By setting two-stage slots and two independently controlled locking components, two modes of partial and complete downward movement are achieved, thereby avoiding the problem of waste caused by accidental triggering of fire extinguishing gas during wading. Under wading conditions, the sealing strip 22 is only partially inserted, which is waterproof without completely sealing it, facilitating the reset process after wading. In the event of thermal runaway, both stages are released simultaneously to ensure full-force operation, while the sealing strip 22 is fully inserted into the heat dissipation vent 101, which also avoids the problem of excessive emission of harmful gases in the event of battery pack 2 deflagration.

[0059] It should be noted that the first carding drive 15 and the second carding drive 16 in this application mainly adopt an electric telescopic structure such as an electric push rod, but they can also be in the form of an electromagnetic component. That is, the first card plate 1501 and the second card plate 1601 in this application both include an insertion part and an adsorption part. The adsorption part adopts an electromagnet, and the insertion part adopts a ferromagnetic component. When the vehicle is powered on, the electromagnet has magnetic force, thereby attracting the insertion part. When the vehicle is powered off due to a battery explosion, the electromagnet loses its magnetic force, thereby separating the adsorption part from the insertion part, and realizing the opening of the sealing cover 13.

[0060] Of course, a small power supply and temperature sensor can be further integrated. When the vehicle is powered off but the temperature sensor does not detect high temperature, the small power supply is used to energize the electromagnet to achieve a locked state. When the vehicle is powered off and the temperature sensor detects high temperature, the small power supply is directly controlled to stop supplying power, unlocking the insertion part and opening the sealing cover 13.

[0061] Optionally, such as Figures 7-10 As shown, the self-ignition-proof battery system provided in this application also includes a reset mechanism, which includes a winding drive 17, a winch 18, and a pull rope 19. The output end of the winding drive 17 is connected to the winch 18, the pull rope 19 is wound around the winch 18, and the free end of the pull rope 19 is connected to the top end of the gear shift lever 6 for pulling the gear shift lever 6 upward to reset it.

[0062] In this application, the winding drive 17 is preferably a low-speed, high-torque DC motor, but a servo motor or stepper motor can also be used. The winch 18 is a cylindrical winding reel, fixedly mounted on the output shaft of the winding drive 17, and rotates coaxially with the output shaft. The pull rope 19 can be a high-strength flexible rope, such as steel wire rope or aramid rope, with one end fixed to the winch 18 and wound several times, and the other end leading outwards.

[0063] To reduce friction and change the direction of the pulling force, a pulley 20 is installed at the top of the slide 7 on the inner wall of the outer casing 1. The free end of the pull rope 19 first passes over the pulley 20 and then connects downwards to the top of the gear shift lever 6. By using the pulley 20, the direction of the pulling force of the pull rope 19 can be changed from horizontal or oblique to vertically upward, making it easier to directly pull up the gear shift lever 6.

[0064] In practical use, when it is necessary to restore the lifting mechanism to its initial high position, such as when thermal runaway has been extinguished and needs to be repaired, or when the vehicle needs to restore its cooling function after driving through a flooded section, the control system sends a forward rotation command to the winding drive 17. The winding drive 17 drives the winch 18 to rotate, and the winch 18 winds up the pull rope 19. The pull rope 19 pulls the gear shift lever 6 upward through the pulley 20. The gear shift lever 6 causes the entire lifting frame to move upward against the elastic force of the elastic telescopic rod 10.

[0065] During the ascent, the elastic telescopic rod 10 is gradually compressed, re-storing elastic potential energy. When the gear slide rod 6 rises to the position where the first slot 601 and the second slot 602 are aligned with the two locking components, the control system controls the locking drive of the two locking components to synchronously drive the two locking plates to extend, so that the locking plates are inserted into the slots, locking the gear slide rod 6 in the high position. After that, the rewind drive 17 stops rotating or remains in a de-energized state.

[0066] If reuse is required after reset, simply release the locking mechanism following the aforementioned steps. Because the lifting mechanism cannot automatically return to its initial position after wading or thermal runaway, the system is not reusable. Therefore, this application achieves remote automated reset through the cooperation of the further configured rewind drive 17 and pull rope 19, enabling the entire system to be reused, reducing maintenance costs. Furthermore, the reset process requires no manual intervention and can be automatically executed by the vehicle control system. The pull rope 19 and pulley 20 have a simple structure and high pulling force, reliably overcoming the combined force of multiple springs. Even after thermal runaway, if some components are damaged, the reset mechanism may still pull the lifting frame back, facilitating subsequent maintenance.

[0067] It is understood that the slide 7 in this application can be integrated with a position sensor, so that it can send a signal to the control system according to the position of the gear slide 6 to realize the extension and retraction of the plate.

[0068] Optionally, such as Figure 8 Combination Figure 9 As shown, the self-ignition-proof battery system provided in this application also includes an isolation box 14, which is fixed inside the outer shell 1. The locking mechanism and the reset mechanism are both located inside the isolation box 14. The isolation box 14 includes a box body, a first partition 1401 and a second partition 1402. The first partition 1401 and the second partition 1402 are arranged parallel to each other inside the box body to form three independent chambers. The first locking component and the second locking component are respectively located in two of the chambers and are corresponding to the first locking slot 601 and the second locking slot 602. The reset mechanism is correspondingly located in the topmost chamber.

[0069] This application utilizes the isolation box 14 to physically isolate all control and execution components from the battery pack 2 area. The interior of the isolation box 14 is divided into three independent chambers by a first partition 1401 and a second partition 1402. The first partition 1401 and the second partition 1402 are arranged parallel to each other in the horizontal direction, forming upper, middle, and lower three-layer chambers.

[0070] The second locking assembly is installed in the lowest chamber, the first locking assembly is installed in the middle chamber, and the reset mechanism is installed in the top chamber. The locking plate of each locking assembly passes through the through-holes in the side wall of the isolation box 14 and the inner wall of the outer shell 1, extending into the interior of the outer shell 1 to engage with the locking groove of the gear shift lever 6. A sealing ring can be further installed at the through-holes formed in the outer shell 1 to prevent gas leakage.

[0071] In practical use, when battery pack 2 experiences thermal runaway, the high-temperature flames, shock waves, and conductive fumes mainly concentrate around battery pack 2. Because the isolation box 14 and the outer casing 1 are sealed to a certain extent via a sealing ring, they can maintain normal operating temperature for a certain period and will not be damaged by heat radiation or direct flame impact. This allows the locking mechanism to reliably release the locking plate, and the reset mechanism can be activated when needed, significantly improving the system's survivability in extreme environments.

[0072] Optionally, such as Figure 6 As shown, the self-ignition-proof battery system provided in this application also includes a safety rope 1302. The sealing cover 13 is connected to the gas container 11 through the safety rope 1302. The inner wall of the outer shell 1 has a storage part 102 corresponding to the position of the nozzle 12, and the diameter of the storage part 102 is larger than the diameter of the sealing cover 13.

[0073] The safety rope 1302 in this application can be made of stainless steel wire braided rope or aramid rope. One end of the safety rope 1302 is fixed to the root of the nozzle 12 of the gas container 11, and the other end is connected to a ring 1303. The ring 1303 is fitted onto the sealing cover 13, and the inner diameter of the ring 1303 is slightly larger than the outer diameter of the sealing cover 13, so that the sealing cover 13 can rotate freely but will not fall out of the ring 1303. Thus, in addition to the threaded connection, the sealing cover 13 and the nozzle 12 are also flexibly constrained by the safety rope 1302.

[0074] The inner wall of the outer casing 1 has a storage tray formed at the position of each jet nozzle 12. The storage tray has a bowl-shaped or box-shaped structure with the opening facing the sealing cover 13. The inner diameter is larger than the outer diameter of the sealing cover 13, and the depth is sufficient to accommodate the entire sealing cover 13. A rubber buffer layer can be attached to the inner wall of the storage part 102.

[0075] In actual use, when the sealing cover 13 is detached from the nozzle 12 by high-pressure gas, the high-pressure gas ejects at extremely high speeds, causing the sealing cover 13 to fly outwards like a bullet. At this moment, the safety rope 1302 immediately tightens, holding the sealing cover 13 to prevent it from ejecting randomly. Simultaneously, the sealing cover 13 moves towards the storage compartment 102 under inertia. Since the opening of the storage compartment 102 is directly opposite the direction of the detachment of the sealing cover 13, the sealing cover 13 will fly into the storage compartment 102. The side walls and bottom of the storage compartment 102 provide impact buffering for the sealing cover 13, absorbing its kinetic energy and confining the sealing cover 13 inside the storage compartment 102. This prevents the sealing cover 13 from being ejected at high speed after being detached by high-pressure gas, impacting the battery pack 2, the outer casing 1, or other components of the lifting mechanism, causing secondary damage, or even potentially penetrating the outer casing 1 and causing a more serious accident.

[0076] Optionally, such as Figure 2 Combination Figure 4 , Figure 7 and Figure 8 As shown, the lifting frame in this application includes multiple corner plates 3, longitudinal plate frames 4, and transverse plate frames 5; the corner plates 3 are slidably connected to the four inner corners of the outer shell 1, and a longitudinal plate frame 4 is suspended at the bottom of every two corner plates 3, and two transverse plate frames 5 are suspended at the bottom of the two longitudinal plate frames 4; the telescopic end of the elastic telescopic rod 10 is connected to the end of the longitudinal plate frame 4.

[0077] The lifting frame in this application includes four corner plates 3, two longitudinal plate frames 4, and two transverse plate frames 5. The corner plates 3 have grooves formed on the side facing the inner wall of the outer casing 1, allowing the corner plates 3 to slide and connect to the four corner positions inside the outer casing 1. Correspondingly, each of the four corners of the inner wall of the outer casing 1 in this application is provided with a vertical guide rail, allowing the corner plates 3 to be embedded in the guide rails and slide up and down along them.

[0078] The four corner plates 3 are divided into two groups. The two corner plates 3 located on the same long side of the outer shell 1 form one group. The bottom of each group of corner plates 3 is fixed with a longitudinal plate frame 4 by a hanging pin or bolt. The longitudinal plate frame 4 is a long strip metal beam that extends along the length of the outer shell 1. The two longitudinal plate frames 4 are arranged in parallel and are located on the left and right sides of the outer shell 1, respectively.

[0079] Below the two longitudinal panels 4, two transverse panels 5 are suspended and installed. Accordingly, the transverse panels 5 in this application are also long strip metal beams, extending along the width direction of the outer shell 1, with both ends fixedly connected to the two longitudinal panels 4. The two transverse panels 5 are arranged in parallel, forming a rectangular frame together with the longitudinal panels 4.

[0080] There are four elastic telescopic rods 10, and the telescopic end of each elastic telescopic rod 10 is connected to the end of the longitudinal frame 4. Specifically, each end of each longitudinal frame 4 is connected to an elastic telescopic rod 10, so the four elastic telescopic rods 10 are located at the four corners of the outer casing 1.

[0081] The fixed end of the elastic telescopic rod 10 in this application is fixed to the top wall of the outer shell 1, so that the thrust of the elastic telescopic rod 10 acts directly on both ends of the longitudinal plate frame 4, and is then transmitted to the entire frame through the longitudinal plate frame 4.

[0082] The sliding connection between the corner plate 3 and the four corners of the outer casing 1 provides vertical guidance for the frame, restricting the frame to move only up and down and preventing it from swaying forward, backward, left, or right. Understandably, due to the large size of the lifting frame, if only single-point or two-point drive guidance is used, tilting or jamming may easily occur, causing the trigger rack 9 to fail to engage precisely or the sealing strip 22 to fail to align with the heat dissipation vent 101.

[0083] This application uses four corner guides and four springs to ensure that the frame remains horizontal and moves smoothly during lifting, thus improving its service life.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flameproof battery system, characterized by Includes the outer casing, battery pack, lifting mechanism, and gas container; The lifting mechanism, the gas container, and the battery pack are all housed within the outer casing, with the gas container located at the bottom of the battery pack and the battery pack fixedly connected to the top wall inside the outer casing. The lifting mechanism includes a triggering component and a linear drive component. The output end of the linear drive component is connected to the triggering component. The gas container includes a container body and a sealing cap. The container body forms a jet nozzle, and the sealing cap is detachably installed on the jet nozzle. The trigger component is provided corresponding to the sealing cover, and the linear drive component can drive the trigger component to move in a direction closer to or away from the sealing cover, and open the sealing cover; It also includes a locking mechanism, which is installed on the housing at the position corresponding to the trigger component and is capable of locking or releasing the lifting mechanism; The linear drive assembly includes an elastic telescopic rod, a lifting frame, and a gear shift lever; The fixed end of the elastic telescopic rod is connected to the top inner wall of the outer shell, and the telescopic end is connected to the lifting frame, which is used to apply a downward driving force to the lifting frame so that the lifting frame can move away from the gas container. The gear shift lever is vertically arranged and connected to the lifting frame. The trigger component is installed at the end of the gear shift lever away from the lifting frame, so that the trigger component is initially spaced apart from the sealing cover. The locking mechanism can lock or release the gear shift lever; The triggering assembly includes a trigger rack and a mounting bracket, wherein the trigger rack is fixed to the side of the gear shift lever by the mounting bracket; The outer peripheral wall of the sealing cover is formed with meshing teeth, and the trigger rack is used to mesh with the meshing teeth to drive the sealing cover to rotate and disengage from the jet nozzle when the gear slide bar moves down.

2. The flame proof battery system of claim 1, wherein, The locking mechanism includes a first locking component and a second locking component arranged at intervals along the vertical direction. The gear slide bar has a first slot corresponding to the position of the first locking component and a second slot corresponding to the position of the second locking component. The first locking component and the second locking component can extend and retract relative to the gear slide bar so that the first locking component is inserted into the first slot and the second locking component is inserted into the second slot.

3. The flame proof battery system of claim 2, wherein, It also includes a reset mechanism, which comprises a rewind drive, a winch, and a pull rope; The output end of the winding drive is connected to the winch, the pull rope is wound around the winch, and the free end of the pull rope is connected to the top of the gear slide bar for pulling the gear slide bar upward and resetting it.

4. The flame proof battery system of claim 3, wherein, It also includes an isolation box, which is fixed inside the outer shell, and both the locking mechanism and the reset mechanism are located inside the isolation box; The isolation box includes a box body, a first partition and a second partition. The first partition and the second partition are arranged parallel to each other in the box body to form three independent chambers. The first locking component and the second locking component are respectively arranged in two of the chambers and are arranged corresponding to the first slot and the second slot. The reset mechanism is located in the topmost cavity.

5. The flame proof battery system of claim 1, wherein, It also includes a safety rope, the sealing cap is connected to the gas container via the safety rope, and the inner wall of the outer shell has a receiving part corresponding to the position of the jet nozzle, and the diameter of the receiving part is larger than the diameter of the sealing cap.

6. The flame proof battery system of claim 1, wherein, The lifting frame includes multiple corner plates, longitudinal plate frames, and transverse plate frames; The corner plates are slidably connected to the four inner corners of the outer shell, and a longitudinal plate frame is suspended at the bottom of every two corner plates, and two transverse plate frames are suspended at the bottom of the two longitudinal plate frames. The telescopic end of the elastic telescopic rod is connected to the end of the longitudinal plate frame.

7. The self-ignition-proof battery system according to claim 6, characterized in that, It also includes a sealing base plate, which is installed on the side of the lifting frame away from the gas container, and the bottom of the sealing base plate is provided with multiple sealing strips; The bottom of the outer casing has multiple heat dissipation vents, and the sealing strip is set one-to-one with each heat dissipation vent. When the lifting frame moves down, the sealing strip is inserted into the heat dissipation vent.

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