A lithium battery aging house and a method of using the same

Abstract

The application relates to the technical field of battery preparation, and discloses a lithium battery aging room and an application method thereof, which comprises a bottom plate, a carrier, a bracket and a protective cover, wherein the bottom plate is provided with a storage area and a settling area, the storage area is provided with a air supply assembly, and the settling area is provided with a fire-fighting assembly; the carrier is movably arranged on the bottom plate; the bracket is arranged on the carrier and is used for placing lithium batteries; the protective cover is hung on the ceiling of the aging room and corresponds to the settling area. The bottom plate is divided into the storage area and the settling area, and the carrier is movably arranged on the bottom plate; thus, the carrier can drive the lithium batteries to move to the storage area for heating and aging, and when the lithium batteries are in thermal runaway, the lithium batteries can be moved to the settling area for settling; meanwhile, the protective cover can fall down to cage the lithium batteries in thermal runaway, so that the high-temperature content spouted by the lithium batteries in thermal runaway can be inhibited in cooperation with the settling area, thereby effectively avoiding the influence on other lithium batteries and preventing the problem of large-scale thermal runaway.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and in particular to a lithium battery aging chamber and its application method. Background Technology

[0002] A battery aging chamber is an essential facility in lithium battery production. Equipped with heating systems, it raises the internal temperature to heat the batteries. Currently, aging chambers have two main applications: one is to perform high-temperature static treatment of lithium batteries, promoting interfacial reactions between the electrolyte and electrode materials to form a stable SEI film, thereby ensuring battery cycle life and safety; the other is to perform electrical performance testing on lithium batteries by heating them and using relevant testing equipment to detect the impact of temperature on battery performance, thus ensuring battery performance.

[0003] A utility model patent with authorization announcement number CN221426715U discloses a battery aging chamber device, including a transfer vehicle and multiple aging chamber units arranged side by side; the transfer vehicle is used to load and transfer batteries; the aging chamber units form a accommodating space suitable for accommodating the transfer vehicle; a control assembly is provided on the outer wall of the leftmost or rightmost aging chamber unit, and a heating assembly and a water pipe assembly are provided above the aging chamber unit; the water pipe assembly has several first branches, and each branch has a solenoid valve connected to the control assembly; the heating assembly includes a heating and air supply component and multiple interconnected second branches connected to the heating and air supply component.

[0004] As described in the above technical solution, several aging chamber units are set up for battery storage. This layout requires numerous pipeline branches and corresponding monitoring and fire protection components for each unit, thus increasing application costs. Currently, most aging chambers are large, single-room structures, which present the problem that a single battery experiencing thermal runaway can easily ignite other battery packs. Therefore, how to achieve centralized battery storage and specifically address thermal runaway has become a pressing issue. Summary of the Invention

[0005] In view of this, the present invention proposes a lithium battery aging chamber with good thermal runaway suppression measures and its application method, so as to solve the problems of high application cost and easy ignition of other battery packs when a single battery has thermal runaway.

[0006] The technical solution of this invention is implemented as follows: On one hand, the present invention provides a lithium battery aging chamber, comprising a base plate, a carrier frame, a bracket, and a protective cover, wherein, The base plate is equipped with a storage area and a settling area. The storage area is equipped with an air supply system, and the settling area is equipped with a fire-fighting system. The carrier frame is movable and mounted on the base plate; The bracket is mounted on the carrier and is used to hold the lithium battery. The protective cover is suspended from the ceiling of the aging room and corresponds to the settlement zone.

[0007] Based on the above technical solutions, preferably, the system also includes a connecting pipe, a lifting assembly, and a cover plate, wherein... The storage area is equipped with a first air duct, which is an air supply component. The connecting pipe is located in the settling area and connects to the first air ducts of the two storage areas. The lifting assembly is located within the settling zone; the cover plate is located on the movable end of the lifting assembly.

[0008] Based on the above technical solutions, a preferred embodiment further includes a fire-fighting medium tank, and the lifting assembly includes a synchronous lifter and a drive motor, wherein... The fire-fighting medium tank is located in the settlement zone, and the cover plate is equipped with a puncture component corresponding to the fire-fighting medium tank. The fire-fighting medium tank and the puncture component are fire-fighting components. The synchronous lift is arranged around the fire-fighting medium tank, and the cover plate is set on the movable end of the synchronous lift. The main shaft of the drive motor is connected to the input shaft of the synchronous lift.

[0009] Based on the above technical solutions, preferably, it also includes guide rails, which are provided in both the storage area and the settling area. The guide rails in the settling area are located on the cover plate and are provided with slots that correspond to the edge of the protective cover. The carrier and guide rail slide together; The storage area is equipped with a second air duct, which is connected to the settling area. The cover plate is equipped with an air inlet grille, which corresponds to the projection surface of the protective cover. The protective cover is equipped with a media input pipe.

[0010] Based on the above technical solutions, preferably, the carrier is provided with a flow-limiting groove surrounding the bracket, and a liquid receiving tank is provided at the bottom of the carrier. The flow-limiting groove partially penetrates the carrier and is connected to the liquid receiving tank. The protective cover is equipped with a flow-limiting hood inside. One end of the flow-limiting hood is connected to the protective cover, and a slot is opened at the end of the flow-limiting hood connected to the protective cover.

[0011] Based on the above technical solutions, preferably, the storage area is equipped with an air outlet grille, and the support frame is equipped with an air guide hood, wherein... The air vent grille is connected to the first air duct; One port of the air guide cover corresponds to the air outlet grille, and the other port corresponds to the lithium battery.

[0012] Based on the above technical solutions, preferably, the base plate is the base plate of the aging chamber, and it also includes walls, return air ducts, and infrared radiation panels, wherein... The walls are connected to the base plate; The return air duct is installed on the wall and has multiple air inlets; The infrared radiation panel is installed on the ceiling.

[0013] Based on the above technical solutions, the preferred embodiment also includes a vortex generator and a water mist nozzle, wherein, Multiple eddy current generators are installed and arranged at the four corners of the lithium battery aging chamber. The water mist nozzles are installed on the ceiling and are positioned corresponding to the storage area.

[0014] Based on the above technical solutions, preferably, a fire door is installed on the wall, and the fire door is installed with a corresponding guide rail; the fire door is equipped with vacuum-coated glass.

[0015] On the other hand, the present invention provides a method for applying the above-mentioned lithium battery aging chamber, comprising the following steps: S1. Place the lithium battery on the tray, and then place the lithium battery and the tray together on the carrier. S2. Move the carrier to the storage area, then heat the inside of the lithium battery aging chamber. At the same time, the first air duct outputs hot airflow, which enters the lithium battery aging chamber through the air outlet grille, and then is guided by the air guide hood to blow the lithium battery. S3. When thermal runaway occurs in the lithium battery, move the carrier to the cover plate on the settling area; S4. The lifting assembly drives the carrier, bracket, cover plate and lithium battery to descend synchronously. At the same time, the puncturing component on the cover plate punctures the fire medium tank, and the fire medium is sprayed out for cooling and protection. S5. The protective cover is lowered to cooperate with the cover plate to seal the carrier, bracket and lithium battery; S6. The medium inlet pipe introduces the extinguishing medium into the protective cover to assist in cooling and extinguishing the fire, and to promote the circulation of smoke. S7. The flue gas ejected from the thermal runaway of the lithium battery enters the settling area through the air inlet grille and is then output through the second air duct; the liquid ejected from the thermal runaway of the lithium battery is guided into the liquid receiving tank through the flow limiting groove and flow limiting hood.

[0016] The lithium battery aging chamber and its application method of the present invention have the following advantages over the prior art: (1) By dividing the base plate into a storage area and a settling area, and moving the carrier frame on the base plate, the carrier frame can move the lithium battery to the storage area for heating and aging. When the lithium battery experiences thermal runaway, it can move to the settling area for settling. At the same time, the protective cover can fall down to cover the thermally runaway lithium battery, so as to work with the settling area to suppress the high-temperature contents ejected by the thermally runaway lithium battery, thereby effectively avoiding affecting other lithium batteries and preventing large-scale thermal runaway problems. (2) By setting the first air duct in the storage area of ​​the bottom plate, bottom air supply can be used to heat the lithium battery, which helps to ensure the stability of battery heating; by setting the lifting component and cover plate in the settling area, the lifting component can drive the carrier, bracket and lithium battery to lift and lower synchronously, so as to ensure that the lithium battery can settle to a certain extent during battery thermal control, thereby suppressing the high temperature contents of the eruption from spreading to the surrounding area and affecting other lithium batteries and related facilities. (3) By using a synchronous lifter as the lifting component, it can be arranged in a rectangular shape to ensure the stable lifting of the cover plate; at the same time, this structure leaves space in the middle to install the fire medium tank, and a puncture component is provided on the cover plate. In the event of thermal runaway of the battery and settlement through the synchronous lifter, the cover plate will drive the puncture component to move synchronously to puncture the fire medium tank, so that the fire medium can be released, thereby protecting the lifting components and other facilities in the settlement area. (4) By setting guide rails, the lithium batteries can be moved in conjunction with the carrier to facilitate convenient transportation. At the same time, the guide rails corresponding to the settling area are provided with slots so that when the protective cover is lowered, the port of the protective cover can be stably attached to the cover plate to achieve good sealing and prevent the high-temperature contents from spreading. Since the storage area is provided with a second air duct and the cover plate is provided with an air inlet grille, the high-temperature flue gas can pass through the air inlet grille into the settling area, and then mix with the fire-fighting medium released from the fire-fighting medium box to cool down, and then be discharged through the second air duct, which can prevent the accumulation of flue gas in the aging room from affecting subsequent processing. (5) By setting a flow limiting groove on the carrier and a flow limiting hood inside the protective cover, and setting a slot on one end of the flow limiting hood connected to the protective cover, the high-temperature flue gas emitted during battery thermal runaway will enter between the flow limiting hood and the protective cover through the slot, and then enter the settling area through the air inlet grille and be discharged through the second air duct, while the high-temperature liquid will be limited and enter the liquid receiving tank through the flow limiting groove. This achieves the separate treatment of high-temperature liquid and gas, which is beneficial to improving safety performance. (6) By setting up a return air duct, an infrared radiation plate and an eddy current generator in the aging chamber, the top radiation plate can work with the return air duct and the first air duct to form a uniform heating layout. The eddy current generator can achieve horizontal swirling flow, further eliminating the temperature difference between different locations in the aging chamber and improving the uniformity of heating, thereby ensuring the consistency of the lithium battery preparation process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the lithium battery aging chamber of the present invention; Figure 2 This is a three-dimensional view of the disassembled structure of the base plate, frame, and cover plate of the lithium battery aging chamber of the present invention. Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of the structure at point B; Figure 5 This is a perspective view of the carrier frame of the lithium battery aging chamber of the present invention; Figure 6 This is a front view of the carrier frame of the lithium battery aging chamber of the present invention; Figure 7 This is an exploded view of the carrier frame of the lithium battery aging chamber of the present invention; Figure 8 This is a perspective view of the protective cover of the lithium battery aging chamber of the present invention; Figure 9 This is a cross-sectional view of the protective cover of the lithium battery aging chamber of the present invention; Figure 10 This is a perspective view of the infrared radiation plate and water mist nozzle layout structure of the lithium battery aging chamber of the present invention. In the diagram: 1. Base plate; 101. Storage area; 102. Settling area; 103. First air duct; 104. Second air duct; 105. Air outlet grille; 2. Support frame; 21. Liquid receiving tank; 22. Air guide hood; 201. Flow limiting groove; 3. Bracket; 4. Protective cover; 41. Medium input pipe; 42. Flow limiting hood; 401. Slot; 5. Connecting pipe; 6. Lifting assembly; 61. Synchronous lifter; 62. Drive motor; 7. Cover plate; 701. Air inlet grille; 8. Fire-fighting medium tank; 9. Guide rail; 901. Slot opening; 10. Wall; 11. Return air duct; 12. Infrared radiation plate; 13. Vortex generator; 14. Water mist nozzle. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0020] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present 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 embodiments of the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0025] like Figures 1-10 As shown, the lithium battery aging chamber of the present invention includes a base plate 1, a frame 2, a bracket 3, a protective cover 4, a connecting pipe 5, a lifting assembly 6, a cover plate 7, a fire-fighting medium tank 8, a guide rail 9, a wall 10, a return air duct 11, an infrared radiation plate 12, an eddy current generator 13, and a water mist nozzle 14.

[0026] like Figures 1-7 As shown, the base plate 1 is provided with a storage area 101 and a settling area 102. The storage area 101 is provided with an air supply component, and the settling area 102 is provided with a fire-fighting component. The carrier 2 is movably mounted on the base plate 1. The bracket 3 is mounted on the carrier 2 and is used to place lithium batteries. The protective cover 4 is suspended from the ceiling of the aging chamber and corresponds to the settling area 102. As described above, the base plate 1 is divided into two parts: a storage area 101 and a settling area 102. The two sides of the settling area 102 are set as storage areas 101 for storing lithium batteries. Among them, the bracket 3 is the carrier of the lithium battery. The bracket 3 is placed on the carrier 2, so that the carrier 2 can drive the bracket 3 and the lithium battery to move synchronously. When the lithium battery is placed at high temperature, the lithium battery is located in storage area 101. When the lithium battery experiences thermal runaway, the carrier 2 moves the bracket 3 and the lithium battery to the settling area 102 and settles them. Then, the protective cover 4 falls down to fasten to the carrier 2 and the lithium battery, thereby sealing the thermally runaway lithium battery. In this way, the rapid spread of high-temperature smoke can be effectively suppressed, and the high-temperature smoke can be prevented from affecting the visibility of personnel, which provides favorable conditions for subsequent fire rescue and disposal. At the same time, due to the settling treatment, even if the lithium battery sprays high-temperature liquid, it will not spread to the surrounding area, which can avoid affecting other normal lithium batteries. This solution can be used for centralized storage of batteries, and can also be used to address individual batteries in case of thermal runaway, preventing large-scale thermal runaway. It does not require high application costs and effectively improves the safety of lithium batteries during heating aging and related testing.

[0027] Specifically, the carrier 2 uses a powered mobile vehicle, such as an AGV (Automated Guided Vehicle) or other mobile mechanism.

[0028] like Figures 1-3 As shown, the storage area 101 is provided with a first air duct 103, which is an air supply component. The connecting pipe 5 is located in the settling area 102 and connects to the first air duct 103 of the two storage areas 101. The lifting component 6 is located in the settling area 102. The cover plate 7 is located on the movable end of the lifting component 6. As described above, the storage area 101 is provided with a first air duct 103, which is used for the transport of hot air. The first air duct 103 is provided with an opening for supplying air into the aging chamber, thereby achieving the heating of the lithium battery. Since the settling zone 102 cuts off the storage zone 101, a connecting pipe 5 is set in the settling zone 102 to connect the first air duct 103 in the two storage zones 101. Furthermore, a switch valve and a flow regulating valve are installed on the connecting pipe 5 to control the connection of the first air duct 103 on both sides of the settling zone 102; The settling zone 102 is equipped with a lifting assembly 6 and a cover plate 7 to seal the settling zone 102. The lifting assembly 6 is used to drive the lifting action of the cover plate 7. When the carrier 2 is in the corresponding settling zone 102, it is located on the cover plate 7, thereby realizing the lifting action synchronously.

[0029] like Figure 2 As shown, the lifting assembly 6 includes a synchronous lifter 61 and a drive motor 62. The fire-fighting medium tank 8 is located in the settlement zone 102. The cover plate 7 is equipped with a puncture component corresponding to the fire-fighting medium tank 8. The fire-fighting medium tank 8 and the puncture component are fire-fighting components. The synchronous lifter 61 is arranged around the fire-fighting medium tank 8, and the cover plate 7 is located on the movable end of the synchronous lifter 61. The main shaft of the drive motor 62 is connected to the input shaft of the synchronous lifter 61. As described above, the action execution element of the lifting assembly 6 is a synchronous lifter 61, and the power element of the lifting assembly 6 is a drive motor 62, which drives the synchronous lifter 61 to perform lifting and lowering. The synchronous lifter 61 ensures the stable lifting and lowering of the cover plate 7. The synchronous lifter can be arranged in a rectangular frame structure. This structure leaves space in the middle to install the fire medium tank 8. At the same time, the cover plate 7 is equipped with a puncture component. In the event of battery thermal runaway and settlement through the synchronous lifter 61, the cover plate 7 will drive the puncture component to move synchronously to puncture the fire medium tank 8, so that the fire medium can be released, thereby protecting the lifting components and other facilities in the settlement zone 102. Specifically, the puncture component uses a steel cone to puncture the fire-fighting medium tank 8 to release the medium.

[0030] like Figures 1-4 As shown, guide rails 9 are provided on both the storage area 101 and the settling area 102. The guide rails 9 on the settling area 102 are located on the cover plate 7 and are provided with slots 901, which correspond to the edge of the protective cover 4. The carrier 2 is slidably engaged with the guide rails 9. The storage area 101 is provided with a second air duct 104, which is connected to the settling area 102. The cover plate 7 is provided with an air inlet grille 701, which corresponds to the projection surface of the protective cover 4. The protective cover 4 is provided with a medium input pipe 41. As described above, the guide rail 9 is arranged on the storage area 101 and the settling area 102, and the carrier 2 cooperates with the guide rail 9 to switch between the storage area 101 and the settling area 102. Specifically, the guide rail 9 on the storage area 101 and the guide rail 9 on the settling area 102 are only close to each other at their end faces and are not connected, so as to avoid affecting the settling of the cover plate 7. Specifically, the guide rail 9 on the cover plate 7 is provided with a slot 901, so that when the protective cover 4 falls, the edge of the protective cover 4 is located inside the slot 901, thereby allowing the port of the protective cover 4 to fit tightly against the cover plate 7; the width of the slot 901 must be sufficient to allow the carrier 2 to cross it when it moves. Specifically, the carrier 2 is equipped with moving wheels that cooperate with the guide rail 9, which facilitates crossing the slot 901; Furthermore, an air inlet grille 701 is provided on the cover plate 7, and a second air duct 104 is provided in the storage area 101. In the event of battery thermal runaway, when the protective cover 4 falls, it will be fastened to the cover plate 7 and surround the air inlet grille 701. Then, the high-temperature flue gas will pass through the air inlet grille 701 and enter the settling area 102. Subsequently, the high-temperature flue gas will be discharged through the second air duct 104. The design of this structure can effectively prevent high-temperature smoke from spreading into the aging chamber, providing favorable conditions for subsequent fire fighting and rescue. The protective cover 4 is equipped with a medium input pipe 41, which is used to input fire-fighting medium, such as inert gas, into the protective cover 4 to form air supply, so that the high-temperature flue gas can quickly enter the second air duct 104.

[0031] like Figure 5 ~and Figure 9 As shown, the carrier 2 is provided with a flow-limiting groove 201 surrounding the bracket 3, and a liquid receiving tank 21 is provided at the bottom of the carrier 2. The flow-limiting groove 201 partially penetrates the carrier 2 and is connected to the liquid receiving tank 21. A flow-limiting hood 42 is provided inside the protective cover 4. One end of the flow-limiting hood 42 is connected to the protective cover 4, and a slot 401 is provided at the end of the flow-limiting hood 42 connected to the protective cover 4. As described above, the carrier 2 is equipped with a flow channel 201. When the lithium battery thermally runs away, a large amount of high-temperature smoke and a small amount of high-temperature liquid will be generated. However, since the lithium batteries are stacked when stored in the aging room, it is necessary to consider measures to deal with the spraying of a lot of high-temperature liquid. This design structure is specifically designed to suppress thermal runaway of single-cell lithium batteries. When the number of single-cell batteries that are secured by the protective cover 4 increases, the handling of high-temperature liquids needs to be considered. With this structure, the high-temperature liquid can be suppressed by setting the flow restrictor 42, so that the high-temperature liquid enters the flow restrictor 201 and then enters the liquid receiving tank 21 for storage; the high-temperature flue gas generated therein can be transported through the channel 401 to the space between the flow restrictor 42 and the protective cover 4, and then through the air inlet grille 701, and finally discharged through the second air duct 104, so as to achieve separate treatment of high-temperature flue gas and high-temperature liquid, so as to avoid the high-temperature liquid from passing through the air inlet grille 701 and affecting the internal components of the settling zone 102; Specifically, the flow restrictor 42 has a rectangular frame structure. One end of the flow restrictor 42 is connected to the protective cover 4 and is provided with a slot 401, while the other end is used to contact the carrier 2. Furthermore, after the high-temperature flue gas enters the settling zone 102, it can mix with the fire-fighting medium released by the fire-fighting medium tank 8 to achieve a cooling effect, thereby facilitating the subsequent treatment of the flue gas.

[0032] like Figures 1-4 As shown, the storage area 101 is provided with an air outlet grille 105, and the carrier 2 is provided with an air guide hood 22. The air outlet grille 105 is connected to the first air duct 103. One port of the air guide hood 22 corresponds to the air outlet grille 105, and the other port corresponds to the lithium battery. As described above, the storage area 101 is provided with an air outlet grille 105, which serves as the air outlet of the first air duct 103. When hot air is transported through the first air duct 103, the air outlet grille 105 is used to output hot air. Subsequently, under the guidance of the air guide hood 22, the hot air can evenly blow the lithium battery on the bracket 3, which helps to ensure the consistency of the lithium battery. In this structure, the air guide shroud 22 is integrated with the carrier 2, so that even if the carrier 2 can move, the air guide structure will not deviate, which helps to ensure that the airflow output by the air outlet grille 105 is guided to blow the lithium battery. Specifically, the length of the air outlet grille 105 is greater than the length of the air guide hood 22 to ensure that airflow can enter the air guide hood 22 when there is an error in the movement.

[0033] like Figure 1 and Figure 10As shown, the base plate 1 is the base plate of the aging room, and also includes a wall 10, a return air duct 11 and an infrared radiation plate 12. The wall 10 is connected to the base plate 1; the return air duct 11 is installed on the wall 10 and has multiple air inlets; the infrared radiation plate 12 is installed on the ceiling. As described above, in this scheme, the base plate 1 is used as the base plate of the aging chamber, and the wall 10 is arranged around the base plate 1. A return air duct 11 is provided on the wall 10. In this way, after the hot air is delivered into the aging chamber, multiple return air vents are provided on the return air duct 11 to achieve vertical laminar flow, thereby ensuring the uniformity of heating. Furthermore, an infrared radiation plate 12 with a wavelength of 2-14 micrometers is installed on the ceiling to achieve non-contact uniform heating.

[0034] like Figure 1 As shown and Figure 10 As shown, multiple eddy current generators 13 are provided and are arranged in the four corners of the lithium battery aging chamber; water mist nozzles 14 are installed on the ceiling and are arranged in relation to the storage area 101. As described above, by installing a vortex generator 13 inside the aging chamber, a slow horizontal swirling flow can be generated, which helps to reduce dead zones inside the chamber and ensure a uniform overall temperature inside the aging chamber. Furthermore, water mist nozzles 14 are installed on the ceiling for firefighting when the thermal runaway of lithium batteries cannot be effectively suppressed. Furthermore, heptafluoropropane fire extinguishing nozzles are installed on the ceiling as backups; Furthermore, an explosion vent is installed on the ceiling, which is connected to a neutralization tank containing a 5% NaOH solution. Specifically, the second air duct 104 is also connected to a neutralization tank.

[0035] Furthermore, a fire door is installed on the wall 10, and the fire door is installed on the guide rail 9; the fire door is equipped with vacuum-coated glass. As described above, multiple fire doors can be installed on the wall 10, and the fire doors are set to correspond to the guide rails 9. In this way, when transporting lithium batteries, no manual entry is required. The carrier 2 is moved to the fire door through the guide rails 9, and the lithium battery is placed on the carrier 2 with the bracket 3. Then, the lithium battery is input into the aging chamber through the carrier 2. Specifically, the fire door adopts a thermal break structure to ensure heat insulation performance, and the fire door is equipped with vacuum-coated glass for easy observation; Specifically, the wall 10 is made of a composite of ceramic fiber board, aerogel felt and stainless steel inner liner.

[0036] In the technical solution of this application, infrared thermal imagers, temperature sensors and other detection equipment are installed in the aging chamber to monitor the temperature changes in the aging chamber, thereby ensuring that the carrier 2 can move the lithium battery to the settling area when the lithium battery experiences thermal runaway. Specifically, the eddy current generator 13 is an adjustable-angle eddy current generator, which is used in conjunction with the infrared thermal imager to monitor the temperature inside the room. The adjustable angle of the eddy current generator 13 ensures that the temperature inside the aging room is uniform.

[0037] The application method of the lithium battery aging chamber of the present invention includes the following steps: S1. Place the lithium battery on the bracket 3, and place the lithium battery and the bracket 3 together on the carrier 2; S2. Move the carrier 2 to the storage area 101, and then heat the inside of the lithium battery aging chamber. At the same time, the first air duct 103 outputs hot airflow, which enters the lithium battery aging chamber through the air outlet grille 105, and then guides the lithium battery through the air guide hood 22. S3. When the lithium battery experiences thermal runaway, move the carrier 2 to the cover plate 7 on the settling area 102; S4. The lifting component 6 drives the carrier 2, bracket 3, cover plate 7 and lithium battery to descend synchronously. At the same time, the puncturing component on the cover plate 7 punctures the fire medium tank 8, and the fire medium is sprayed out for cooling and protection. S5, the protective cover 4 falls down to cooperate with the cover plate 7 to seal the carrier 2, bracket 3 and lithium battery; S6. The medium input pipe 41 inputs the extinguishing medium into the protective cover 4 to assist in cooling and extinguishing the fire and to promote the circulation of smoke. S7. The flue gas ejected from the thermal runaway of the lithium battery enters the settling zone 102 through the air inlet grille 701 and is then output through the second air duct 104; the liquid ejected from the thermal runaway of the lithium battery is guided into the liquid receiving tank 21 by the flow limiting groove 201 and the flow limiting hood 42.

[0038] 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 lithium battery aging chamber, characterized in that: Includes a base plate (1), a carrier frame (2), a bracket (3), a protective cover (4), a connecting pipe (5), a lifting assembly (6), and a cover plate (7), among which, The base plate (1) is provided with a storage area (101) and a settling area (102). The storage area (101) is provided with an air supply component, and the settling area (102) is provided with a fire-fighting component. The carrier (2) is movably mounted on the base plate (1); The bracket (3) is mounted on the carrier (2) and is used to hold lithium batteries; The protective cover (4) is suspended on the ceiling of the aging room, and the protective cover (4) corresponds to the settlement zone (102). The storage area (101) is provided with a first air duct (103), the first air duct (103) is the air supply component, the connecting pipe (5) is provided in the settling area (102), and the connecting pipe (5) is connected to the first air duct (103) of the two sides of the storage area (101). The lifting assembly (6) is disposed within the settling zone (102); The cover plate (7) is disposed on the movable end of the lifting assembly (6).

2. The lithium battery aging chamber as described in claim 1, characterized in that: It also includes a fire-fighting medium tank (8), and the lifting assembly (6) includes a synchronous lifter (61) and a drive motor (62), wherein, The fire-fighting medium tank (8) is located in the settlement zone (102), and the cover plate (7) is provided with a puncture component corresponding to the fire-fighting medium tank (8). The fire-fighting medium tank (8) and the puncture component are the fire-fighting components. The synchronous lift (61) is arranged around the fire medium tank (8), and the cover plate (7) is arranged on the movable end of the synchronous lift (61); The main shaft of the drive motor (62) is connected to the input shaft of the synchronous lifter (61).

3. The lithium battery aging chamber as described in claim 2, characterized in that: It also includes a guide rail (9), which is provided on both the storage area (101) and the settling area (102). The guide rail (9) on the settling area (102) is located on the cover plate (7) and is provided with a slot (901), which corresponds to the edge of the protective cover (4). The carrier (2) is slidably engaged with the guide rail (9); The storage area (101) is provided with a second air duct (104), which is connected to the settling area (102); The cover plate (7) is provided with an air inlet grille (701), and the air inlet grille (701) corresponds to the projection surface of the protective cover (4). The protective cover (4) is provided with a medium input pipe (41).

4. The lithium battery aging chamber as described in claim 3, characterized in that: The carrier (2) is provided with a flow-limiting groove (201) surrounding the bracket (3), and a liquid receiving tank (21) is provided at the bottom of the carrier (2). A portion of the flow-limiting groove (201) penetrates the carrier (2) and is connected to the liquid receiving tank (21). The protective cover (4) is provided with a flow restrictor (42) inside. One end of the flow restrictor (42) is connected to the protective cover (4), and the end of the flow restrictor (42) connected to the protective cover (4) is provided with a slot (401).

5. The lithium battery aging chamber as described in claim 4, characterized in that: The storage area (101) is provided with an air outlet grille (105), and the carrier (2) is provided with an air guide hood (22). The air outlet grille (105) is connected to the first air duct (103); One port of the air guide shroud (22) corresponds to the air outlet grille (105), and the other port corresponds to the lithium battery.

6. The lithium battery aging chamber as described in any one of claims 3 to 5, characterized in that: The base plate (1) is the base plate of the aging room, and also includes walls (10), return air ducts (11), and infrared radiation panels (12), wherein, The wall (10) is connected to the base plate (1); The return air duct (11) is installed on the wall (10), and the return air duct (11) is provided with multiple air inlets; The infrared radiation panel (12) is installed on the ceiling.

7. The lithium battery aging chamber as described in claim 6, characterized in that: It also includes a vortex generator (13) and a water mist nozzle (14), wherein, Multiple eddy current generators (13) are provided, and the eddy current generators (13) are arranged at the four corners of the lithium battery aging chamber. The water mist nozzle (14) is mounted on the ceiling and is positioned corresponding to the storage area (101).

8. The lithium battery aging chamber as described in claim 7, characterized in that: Fire doors are provided on the wall (10), and the fire doors are provided corresponding to the guide rail (9); The fire door is equipped with vacuum-coated glass.

9. A method for applying the lithium battery aging chamber as described in claim 5, characterized in that, Includes the following steps: S1. Place the lithium battery on the bracket (3) and place the lithium battery and the bracket (3) together on the carrier (2); S2. Move the carrier (2) to the storage area (101), then heat the inside of the lithium battery aging chamber, and at the same time, the first air duct (103) outputs hot airflow. The hot airflow is input into the lithium battery aging chamber through the air outlet grille (105), and then guided and blown on the lithium battery through the air guide hood (22). S3. When the lithium battery experiences thermal runaway, move the carrier (2) to the cover plate (7) on the settling area (102); S4. The lifting assembly (6) drives the carrier (2), the bracket (3), the cover plate (7) and the lithium battery to descend synchronously. At the same time, the piercing assembly on the cover plate (7) pierces the fire medium tank (8) and the fire medium is sprayed out for cooling and protection. S5. The protective cover (4) falls down to cooperate with the cover plate (7) to seal the carrier (2), the bracket (3) and the lithium battery; S6. The medium input pipe (41) inputs fire extinguishing medium into the protective cover (4) to assist in cooling and extinguishing the fire and to promote the circulation of smoke. S7. The flue gas ejected by the thermal runaway of the lithium battery enters the settling zone (102) through the air inlet grille (701) and is then output through the second air duct (104); the liquid ejected by the thermal runaway of the lithium battery is guided by the flow limiting groove (201) and the flow limiting hood (42) to enter the liquid receiving tank (21).

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