Energy storage system, energy storage prevention and control method and system, energy storage equipment and power utilization device

Abstract

The invention relates to an energy storage system, an energy storage prevention and control method and system, energy storage equipment and a power utilization device, and when the energy storage system is designed, an opening is formed in a box body, so that the energy storage equipment enters partition equipment through the opening. And when it is detected that the energy storage equipment is in the thermal runaway state, the triggering device is triggered to work, so that the energy storage equipment in the thermal runaway state enters the partition equipment through the opening. Therefore, independent and active isolation of the faulted energy storage equipment is realized, and thermal runaway spreading is controlled from the source. Therefore, thermal diffusion can be effectively controlled, an effective protection effect on thermal runaway is achieved, and the reliability of the system is improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to energy storage systems, energy storage prevention and control methods and systems, energy storage equipment, and electrical devices. Background Art

[0002] In the current mainstream energy storage system, in order to increase the energy storage capacity, multiple batteries are connected in series to form a battery cluster, and multiple battery clusters are directly connected in parallel with wires. Energy storage systems usually contain a large amount of energy. Once thermal runaway occurs inside, it is easy to cause power accidents. However, due to the structural design of traditional energy storage systems, the prevention and control effect of thermal runaway is not ideal, and it is impossible to effectively control heat diffusion. Summary of the invention

[0003] Based on this, it is necessary to provide an energy storage system, energy storage prevention and control method and system, energy storage equipment and electrical devices to address the above problems, which can effectively control heat diffusion, effectively protect against thermal runaway, and improve the reliability of the system.

[0004] In a first aspect, the present application provides an energy storage system, comprising: a housing having an opening; an energy storage device movably disposed in the housing; a trigger device disposed in the housing and configured to cause the energy storage device in thermal runaway to move from the opening to detach from the housing; and a blocking device located downstream of the direction of movement of the energy storage device after detaching from the opening, for receiving the energy storage device detached from the opening to block thermal runaway of the energy storage device.

[0005] The above energy storage system is provided with an opening on the box body so that the energy storage device can enter the partition device through the opening. When it is detected that the energy storage device is in a thermal runaway state, the trigger device is triggered to work, so that the energy storage device in a thermal runaway state enters the partition device through the opening. In this way, the faulty energy storage device is isolated separately and actively, and the spread of thermal runaway is controlled from the root. In this way, heat diffusion can be effectively controlled, and effective protection against thermal runaway is provided, which is conducive to improving the reliability of the system.

[0006] In some embodiments, the energy storage device is installed in the box through a trigger device and is located above the opening. The trigger device is configured to cause the energy storage device in a thermal runaway state to fall into the opening. In this design, the energy storage device in thermal runaway is dropped into the opening through the trigger device, the thermal runaway source is cut off, the probability of heat diffusion is effectively reduced, and the reliability of the energy storage system is improved.

[0007] In some embodiments, the trigger device is configured to be disconnectable, and the trigger device is triggered to disconnect, so that the energy storage device in a thermal runaway state falls into the opening. With such a design, the energy storage device in a thermal runaway state can be conveniently dropped into the isolation device by means of a disconnection method, so that the fire response of the energy storage system is fast, the isolation is timely, and the reliability of the energy storage system is further improved.

[0008] In some embodiments, the trigger device includes a hanging part, a disconnecting part, and a mounting part connected to the hanging part through the disconnecting part, the hanging part is fixed to the inner wall of the box, the mounting part is connected to the energy storage device, and the disconnecting part is constructed to be triggered to disconnect. In this way, the hanging part, the disconnecting part, and the mounting part are introduced, so that the energy storage device can be effectively disconnected from the disconnecting part when thermal runaway occurs, and fall into the partition device in time.

[0009] In some embodiments, the energy storage device includes: a housing; a battery, contained in the housing; and a prevention and control structure, disposed in the housing; wherein the prevention and control structure is configured to cause the battery in a thermal runaway state to enter a cooling component in the housing or be transferred out of the housing. Thus, the introduction of the prevention and control structure not only enables the energy storage device as a whole to be individually isolated for fire protection, but also enables the battery in the energy storage device to be processed individually, achieving dual fire protection, and further improving the reliability of the energy storage system.

[0010] In some embodiments, the housing has a discharge port, and the prevention and control structure is used to drive the battery in thermal runaway state to be pushed out and / or slide out from the discharge port. In this way, by pushing out or sliding out, the battery in thermal runaway is isolated outside the housing in time, reducing the impact on other normal batteries, and achieving effective prevention and control of thermal runaway.

[0011] In some embodiments, the prevention and control structure includes a prevention and control body and a support plate disposed in the housing, the battery is supported on the support plate, and the prevention and control body is used to drive the battery in a thermal runaway state to slide out of the discharge port from the support plate. In this design, the support plate can not only stably support the battery, but also provide a basis for the prevention and control body to drive the battery to slide out, so as to achieve an effective prevention and control effect.

[0012] In some embodiments, the prevention and control body includes a blocking member, a support plate is tilted on the housing, and one end of the support plate close to the discharge port is lower than the other end of the support plate, the blocking member is movably arranged on the support plate and is used to abut against the battery, and the blocking member is configured to be able to flip or shrink and release the abutment with the battery. In this way, the battery can slide out of the discharge port in a timely and effective manner by flipping or shrinking the blocking member, thereby effectively preventing and controlling thermal runaway.

[0013] In some embodiments, the prevention and control body includes a driving assembly, and the support plate is rotatably connected to the inner wall of the shell, and the driving assembly is used to drive the support plate to rotate so that the battery slides out of the discharge port. In this design, the driving assembly is used to actively change the tilt state of the support plate when thermal runaway occurs, so that the battery in thermal runaway slides out of the discharge port in time, reducing the impact on other batteries, thereby helping to improve the reliability of the energy storage system.

[0014] In some embodiments, the prevention and control structure includes an ejection assembly, which is arranged on the inner wall of the housing, and the ejection end of the ejection assembly is used to abut against the battery. In this design, the ejection assembly is used to actively eject the battery out of the discharge port, isolate the thermal runaway source, reduce the risk of thermal runaway spreading, and improve the reliability of the energy storage system.

[0015] In some embodiments, the energy storage device further includes a cooling component disposed in the housing, the cooling component is provided with a cooling cavity, and the prevention and control structure is configured to enable the battery in a thermal runaway state to enter the cooling cavity. In this design, the cooling component is provided in the housing, so that the battery in a thermal runaway state can enter the cooling cavity to isolate the thermal runaway source and achieve effective prevention and control.

[0016] In some embodiments, the cooling assembly includes a cooling body and a fire extinguishing agent, the cooling body is disposed in the housing, and a cooling cavity is provided on the cooling body, and the fire extinguishing agent is contained in the cooling cavity. In this design, the fire extinguishing agent is disposed in the cooling body, so that the battery in thermal runaway is effectively isolated, further reducing the risk of battery fire and improving the reliability of the energy storage system.

[0017] In some embodiments, the prevention and control structure includes a hanging assembly, and the battery is suspended above the cooling chamber through the hanging assembly. The hanging assembly is constructed to be disconnected when the battery is in a thermal runaway state. Such a design facilitates the battery in thermal runaway to fall into the cooling chamber by means of disconnection, so that the fire response of the energy storage system is fast, the isolation is timely, and the reliability of the energy storage system is further improved.

[0018] In a second aspect, the present application provides an energy storage prevention and control method, which adopts any of the above energy storage systems, and the energy storage prevention and control method includes the following steps: determining whether the energy storage device is in a thermal runaway state; if the energy storage device is in a thermal runaway state, controlling the trigger device to operate so that the energy storage device in the thermal runaway state enters the partition device through the opening.

[0019] The above energy storage prevention and control method adopts the above energy storage system. When the energy storage device experiences thermal runaway, the energy storage device is caused to enter the isolation device through the trigger device, which effectively controls the heat diffusion and plays an effective protective effect against thermal runaway, which is beneficial to improving the reliability of the system.

[0020] In a third aspect, the present application provides an energy storage prevention and control system, comprising any of the above energy storage systems.

[0021] In the fourth aspect, the present application provides an energy storage device, which includes: a housing; a battery, which is contained in the housing; and a prevention and control structure, which is arranged in the housing; wherein the prevention and control structure is configured to cause the battery in a thermal runaway state to enter the cooling component in the housing or be transferred out of the housing. In this way, the introduction of the prevention and control structure not only enables the energy storage device as a whole to be individually isolated for fire protection; but also enables the batteries in the energy storage device to be processed individually, achieving dual fire protection, and further improving the reliability of the energy storage system.

[0022] In some embodiments, the housing has a discharge port, and the prevention and control structure is used to drive the battery in thermal runaway state to be pushed out and / or slide out from the discharge port. In this way, by pushing out or sliding out, the battery in thermal runaway is isolated outside the housing in time, reducing the impact on other normal batteries, and achieving effective prevention and control of thermal runaway.

[0023] In some embodiments, the prevention and control structure includes a prevention and control body and a support plate disposed in the housing, the battery is supported on the support plate, and the prevention and control body is used to drive the battery in a thermal runaway state to slide out of the discharge port from the support plate. In this design, the support plate can not only stably support the battery, but also provide a basis for the prevention and control body to drive the battery to slide out, so as to achieve an effective prevention and control effect.

[0024] In some embodiments, the prevention and control body includes a blocking member, a support plate is tilted on the housing, and one end of the support plate close to the discharge port is lower than the other end of the support plate, the blocking member is movably arranged on the support plate and is used to abut against the battery, and the blocking member is configured to be able to flip or shrink and release the abutment with the battery. In this way, the battery can slide out of the discharge port in a timely and effective manner by flipping or shrinking the blocking member, thereby effectively preventing and controlling thermal runaway.

[0025] In some embodiments, the prevention and control body includes a driving assembly, and the support plate is rotatably connected to the inner wall of the shell, and the driving assembly is used to drive the support plate to rotate so that the battery slides out of the discharge port. In this design, the driving assembly is used to actively change the tilt state of the support plate when thermal runaway occurs, so that the battery in thermal runaway slides out of the discharge port in time, reducing the impact on other batteries, thereby helping to improve the reliability of the energy storage system.

[0026] In some embodiments, the prevention and control structure includes an ejection assembly, which is arranged on the inner wall of the housing, and the ejection end of the ejection assembly is used to abut against the battery. In this design, the ejection assembly is used to actively eject the battery out of the discharge port, isolate the thermal runaway source, reduce the risk of thermal runaway spreading, and improve the reliability of the energy storage system.

[0027] In some embodiments, the energy storage device further includes a cooling component disposed in the housing, the cooling component is provided with a cooling cavity, and the prevention and control structure is configured to enable the battery in a thermal runaway state to enter the cooling cavity. In this design, the cooling component is provided in the housing, so that the battery in a thermal runaway state can enter the cooling cavity to isolate the thermal runaway source and achieve effective prevention and control.

[0028] In some embodiments, the cooling assembly includes a cooling body and a fire extinguishing agent, the cooling body is disposed in the housing, and a cooling cavity is provided on the cooling body, and the fire extinguishing agent is contained in the cooling cavity. In this design, the fire extinguishing agent is disposed in the cooling body, so that the battery in thermal runaway is effectively isolated, further reducing the risk of battery fire and improving the reliability of the energy storage system.

[0029] In some embodiments, the prevention and control structure includes a hanging assembly, and the battery is suspended above the cooling chamber through the hanging assembly. The hanging assembly is constructed to be disconnected when the battery is in a thermal runaway state. Such a design facilitates the battery in thermal runaway to fall into the cooling chamber by means of disconnection, so that the fire response of the energy storage system is fast, the isolation is timely, and the reliability of the energy storage system is further improved.

[0030] In a fifth aspect, the present application provides an electrical device, which includes any of the above energy storage devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the energy storage system structure described in some embodiments of the present application.

[0032] Figure 2 This is a schematic diagram of the cooperation between the energy storage device and the trigger device described in some embodiments of the present application.

[0033] Figure 3 This is a schematic diagram of the structure of the energy storage device in which the battery is not transferred out as described in some embodiments of the present application.

[0034] Figure 4 This is a schematic diagram of the structure of the energy storage device after the battery is transferred out as described in some embodiments of the present application.

[0035] Figure 5 This is a schematic diagram of the structure of the energy storage device located on one side of the opening described in some embodiments of the present application.

[0036] Figure 6 This is a schematic diagram of the coordination structure of the flippable blocking member and the battery described in some embodiments of the present application.

[0037] Figure 7 This is a schematic diagram of the matching structure of the retractable barrier and the battery described in some embodiments of the present application.

[0038] Figure 8 for Figure 7 A cross-sectional view of the blocking member structure in FIG.

[0039] Fig. 9 This is a schematic diagram of the coordination structure of the drive assembly and the battery described in some embodiments of the present application.

[0040] Fig.10 This is a schematic diagram of the structure of an energy storage device with an ejection component described in some embodiments of the present application.

[0041] Fig.11 This is a schematic diagram of the structure of the ejection assembly described in some embodiments of the present application.

[0042] Fig.12 This is a schematic diagram of the coordination structure of the energy storage device and the cooling component described in some embodiments of the present application.

[0043] Fig.13 This is a schematic diagram of the structure of an energy storage device with a cooling component described in some embodiments of the present application.

[0044] Fig.14 This is a schematic diagram of the energy storage prevention and control process described in some embodiments of the present application.

[0045] 100. Energy storage system; 10. Box; 11. Opening; 20. Energy storage device; 21. Shell; 211. Exhaust port; 212. Support block; 22. Battery; 23. Control structure; 231. Support plate; 23a. Contraction channel; 23b. Notch; 232. Control body; 23c. Blocking member; 23d. Drive assembly; 24. Ejection assembly; 241. Bottom tube; 242. Ejection member; 243. Spring; 244. Claw; 25. Suspension assembly; 26. Cooling assembly; 261. Cooling chamber; 30. Trigger device; 31. Suspension member; 32. Mounting member; 33. Disconnection member; 40. Partition device. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0047] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0048] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0050] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0052] In the current mainstream energy storage system, in order to increase the energy storage capacity, multiple batteries are connected in series to form a battery cluster, and multiple battery clusters are directly connected in parallel with wires. For example: In an energy storage system, multiple energy storage devices are usually built in, and multiple batteries are connected in series in the energy storage device, so that multiple energy storage devices are used to jointly supply power to the outside. However, because the energy storage system integrates multiple energy storage devices, it contains a large amount of energy. Once thermal runaway occurs inside, it is easy to cause an electrical accident.

[0053] For thermal runaway control, traditional energy storage systems are generally equipped with spraying devices to spray fire extinguishing agents such as aerosols and perfluorohexanone on the out-of-control energy storage equipment. However, this prevention and control method is not ideal. Out-of-control energy storage equipment can easily spread the released heat to the surrounding normal energy storage equipment, which in turn causes serious heat spread risks.

[0054] Based on this, in order to effectively solve the problem that heat diffusion in the energy storage system is difficult to control due to the poor effect of traditional prevention and control, the present application provides an energy storage system. An opening is set on the box, and the partition device is kept in communication with the box through the opening, so that it is convenient for the energy storage device to enter the partition device through the opening. When it is detected that the energy storage device is in a thermal runaway state, the trigger device is triggered to work, so that the energy storage device in a thermal runaway state enters the partition device through the opening. In this way, the faulty energy storage device is isolated separately and actively, and the spread of thermal runaway is controlled from the source. In this way, heat diffusion can be effectively controlled, and effective protection against thermal runaway can be played, which is conducive to improving the reliability of the system.

[0055] The energy storage device provided in the present application has several batteries installed inside. The energy storage device can be used not only in energy storage systems, but also in electrical devices. Among them, the electrical devices can be but are not limited to power tools, electric vehicles, ships, spacecraft, etc. Spacecraft can include airplanes, rockets, space shuttles, spacecraft, etc.

[0056] According to some embodiments of this application, please refer to Figure 1The present application provides an energy storage system 100, which includes: a box 10, a partition device 40, an energy storage device 20, and a trigger device 30. The box 10 has an opening 11, and the energy storage device 20 is movably arranged in the box 10. The trigger device 30 is arranged in the box 10 and is configured to cause the energy storage device 20 in thermal runaway to move from the opening 11 to detach from the box 10. The partition device 40 is located downstream of the movement direction of the energy storage device 20 after it detaches from the opening 11, and is used to receive the energy storage device 20 detached from the opening 11 to isolate the thermal runaway of the energy storage device 20.

[0057] The energy storage device 20 refers to a component that has an energy storage function and can provide electrical energy to the outside, and one or more batteries 22, such as lithium-ion batteries, may be arranged inside the energy storage device 20. The box 10 refers to a container structure that provides storage space for the energy storage device 20, and its shape can be designed in various ways, such as: cylindrical, rectangular, cube, etc.

[0058] In the box 10, the number of energy storage devices 20 may be one or more. In order to accurately obtain the operating status of the energy storage device 20, sensors such as smoke sensors, temperature sensors, etc. may be provided in the box 10. When thermal runaway occurs in one of the energy storage devices 20, the parameters obtained by the smoke sensor or the temperature sensor will exceed the set parameters. Of course, when obtaining the operating status of the energy storage device 20, other judgment methods may also be combined, such as monitoring the operating current, operating voltage, and operating temperature of each energy storage device 20 through a BMS (Battery Management System). If an abnormality occurs in the monitored parameters, the faulty energy storage device 20 may be located quickly and accurately.

[0059] Among them, the energy storage device 20 is in a state of thermal runaway, which can also be understood as the battery 22 in the energy storage device 20 is in an abnormal state, and this state can be judged by temperature. For example: when the energy storage device 20 is in a state of thermal runaway, the temperature in the energy storage device 20 rises rapidly, such as rising to above 90°C. At this time, the SEI film (Solid electrolyte interface) in the battery 22 begins to melt, so that the negative electrode material and the lithium-embedded carbon contained in the negative electrode material are exposed to the electrolyte. The lithium-embedded carbon reacts with the electrolyte to generate high temperature, which further decomposes the SEI film and further aggravates the thermal runaway.

[0060] The partition device 40 refers to a component that can play a fire-fighting role for the energy storage device 20 in a thermal runaway state. It is located at the downstream end of the energy storage device 30, which means that the energy storage device 30 after losing control will leave the original position and move to the opening 11. At this time, the partition device 40 is located on the movement trajectory of the energy storage device 30, so that the energy storage device 30 can enter the partition device 40 through the opening 11. When it is detected that the energy storage device 20 is in an out-of-control state, the energy storage device 20 enters the partition device 40 through the opening 11, and the heat on the energy storage device 20 can be spread to other normal energy storage devices 20. There are many ways for the partition device 40 to isolate the energy storage device 20, for example: the partition device 40 is designed as a deep pit structure, and can also be designed as a water tank structure. Of course, the partition device 40 can also be filled with fire extinguishing materials or cooling materials.

[0061] Optionally, the partition device 40 may be located outside the box 10 or may be fixed on the box 10. When the partition device 40 is located outside the box 10, it should be arranged below the opening 11 of the box 10 so that the energy storage device 20 falls into the partition device 40 through the opening 11.

[0062] In addition, the number of openings 11 can be one or more. When there is one opening 11, each energy storage device 20 in a thermal runaway state falls into the partition device 40 through the same opening 11. When there are multiple openings 11, each energy storage device 20 can be configured with an opening 11, so that no matter which energy storage device 20 has thermal runaway, it can enter the partition device 40 through the corresponding opening 11.

[0063] It should also be noted that the trigger device 30 is triggered to work when it is detected that the energy storage device 20 is in a thermal runaway state, so as to prompt the energy storage device 20 in a thermal runaway state to enter the partition device 40 through the opening 11. There are many ways for the trigger device 30 to prompt the energy storage device 20 to enter the partition device 40, for example: the trigger device 30 is constructed as a disconnectable structure, and the energy storage device 20 is suspended above the opening 11 through the trigger device 30. The disconnection method can be achieved by current fuse, or by explosives or blasting, etc.; or, it can be achieved by powering off to demagnetize the electromagnet, etc.

[0064] Of course, the trigger device 30 can also be constructed as an active pushing device, for example, when the energy storage device 20 is in a thermal runaway state, the trigger device 30 actively pushes the energy storage device 20 into the opening 11, and enters the partition device 40 through the opening 11. In this case, the trigger device 30 can be designed as a cylinder, an electric cylinder; or a combination structure of a motor and a transmission mechanism, such as a motor and a screw mechanism, a motor, a gear and a rack combination structure, etc.

[0065] In this way, heat diffusion can be effectively controlled, thermal runaway can be effectively protected, and the reliability of the system can be improved.

[0066] According to some embodiments of the present application, optionally, please refer to Figure 1 The energy storage device 20 is installed in the box 10 through the trigger device 30 and is located above the opening 11. The trigger device 30 is configured to cause the energy storage device 20 in a thermal runaway state to fall into the opening 11.

[0067] The energy storage device 20 is installed in the box 10 and is located above the opening 11, which means that the energy storage device 20 can be in a suspended state or a suspended state in the box 10, such as: the trigger device 30 is set on the inner wall of the box 10, and then the energy storage device 20 is supported on the trigger device 30 to achieve the purpose of suspension.

[0068] When the energy storage device 20 is suspended in the box 10 through the trigger device 30, the trigger device 30 can be designed to be a disconnectable structure; when the energy storage device 20 is suspended on the trigger device 30, the trigger device 30 can be designed to be a telescopic structure or a flipping structure. For example: if the energy storage device 20 has thermal runaway, the trigger device 30 can retract or flip, causing the energy storage device 20 to fall off the trigger device 30.

[0069] With such a design, the energy storage device 20 that has thermal runaway is dropped into the opening 11 by the trigger device 30 , thereby isolating the source of thermal runaway, effectively reducing the probability of heat diffusion, and improving the reliability of the energy storage system 100 .

[0070] According to some embodiments of the present application, optionally, please refer to Figure 1 The trigger device 30 is constructed as a disconnectable structure, and the trigger device 30 is triggered to disconnect, so that the energy storage device 20 in the thermal runaway state falls into the opening 11 .

[0071] The trigger device 30 is a disconnectable structure. When the energy storage device 20 has thermal runaway, the trigger device 30 is disconnected, so that the energy storage device 20 falls from the box 10 into the opening 11. The trigger device 30 can be disconnected by explosives or blasting, or by power failure and demagnetization, so that the electromagnet and the adsorbed object are disconnected; of course, it can also be designed as a fusible structure, for example: when the energy storage device 20 has thermal runaway, a large current is passed through the trigger device 30 to achieve a fusing effect.

[0072] With such a design, the disconnection method is utilized to facilitate the energy storage device 20 in thermal runaway to fall into the isolation device 40 , so that the fire response of the energy storage system 100 is fast and the isolation is timely, further improving the reliability of the energy storage system 100 .

[0073] According to some embodiments of the present application, optionally, please refer to Figure 2 The trigger device 30 includes a hanging member 31, a disconnecting member 33, and a mounting member 32 connected to the hanging member 31 through the disconnecting member 33. The hanging member 31 is fixed to the inner wall of the box body 10, the mounting member 32 is connected to the energy storage device 20, and the disconnecting member 33 is configured to be triggered to disconnect.

[0074] The hanging part 31 refers to a part connected to the box body 10, and the mounting part 32 refers to a part connected to the energy storage device 20. The connection between the hanging part 31 and the box body 10 may be, but not limited to, bolt connection, clamping, welding, riveting, hooking, etc. At the same time, the connection between the mounting part 32 and the energy storage device 20 may also be, but not limited to, bolt connection, clamping, welding, riveting, hooking, etc.

[0075] The disconnection member 33 is a structure that can be disconnected when the energy storage device 20 is in thermal runaway, so that the mounting member 32 is separated from the hanging member 31. There are many ways to disconnect, for example: the energy storage system 100 outputs a large amount of current to the disconnection member 33 to fuse; or the disconnection member 33 may include an electromagnet and a magnetic attraction member, and when the energy storage device 20 is in thermal runaway, the electromagnet loses power and magnetism, and is disconnected from the magnetic attraction member.

[0076] In this way, the hoisting member 31 , the disconnecting member 33 and the mounting member 32 are introduced, so that the energy storage device 20 can be effectively disconnected from the disconnecting member 33 and fall into the partition device 40 in time when thermal runaway occurs.

[0077] According to some embodiments of the present application, optionally, please refer to Figure 3 and Figure 4 The energy storage device 20 includes: a housing 21, a battery 22 and a prevention and control structure 23. The battery 22 is accommodated in the housing 21, and the prevention and control structure 23 is arranged in the housing 21. The prevention and control structure 23 is configured to enable the battery 22 in a thermal runaway state to enter the cooling component 26 in the housing 21 or be transferred out of the housing 21.

[0078] It should be noted that, in the present embodiment, the energy storage device 20 can achieve effective fire fighting in the box 10, and at the same time, the energy storage device 20 itself can also achieve effective fire fighting. The two can be carried out simultaneously, or the two fire fighting can be controlled to be executed in sequence through program setting. For example: when the energy storage device 20 has thermal runaway, the trigger device 30 is first used to make the energy storage device 20 as a whole enter the partition device 40; then the prevention and control structure 23 is controlled to operate, and specifically the battery 22 with thermal runaway is subjected to fire fighting; or, when the energy storage device 20 has thermal runaway, the prevention and control structure 23 is controlled to operate first; then the trigger device 30 is controlled to be triggered.

[0079] The prevention and control structure 23 refers to a structure that enables the battery 22 in thermal runaway to enter the cooling component 26 or be transferred out of the housing 21. For example, when the prevention and control structure 23 is triggered, the battery 22 loses support and falls into the cooling component 26 below; or, when the prevention and control structure 23 is triggered, the battery 22 can slide out of the housing 21 by its own weight; of course, the battery 22 in thermal runaway can also be actively pushed out or ejected out of the housing 21 by the prevention and control structure 23.

[0080] Among them, the energy storage device 20 may or may not be provided with a cooling component 26. When the cooling component 26 is provided, the battery 22 in thermal runaway may fall into the cooling component 26 for cooling; when the cooling component 26 is not provided, the battery 22 in thermal runaway may be transferred to the outside of the housing 21 by the prevention and control structure 23 to reduce its impact on the normal battery 22. The cooling component 26 refers to a container structure with cooling materials inside, such as ordinary water, water-based fire extinguishing agent, foam fire extinguishing agent, liquid nitrogen, etc.

[0081] In addition, if the battery 22 in thermal runaway is transferred outside the housing 21, the battery 22 may fall into the partition device 40 in the above embodiment, or into a container containing fire extinguishing materials. Meanwhile, the battery 22 refers to a component that outputs electrical energy to the outside, and may have one or more battery 22 cells integrated therein.

[0082] In this way, the introduction of the prevention and control structure 23 not only allows the energy storage device 20 as a whole to be individually isolated for fire protection, but also allows the battery 22 in the energy storage device 20 to be processed individually, thereby achieving dual fire protection and further improving the reliability of the energy storage system 100.

[0083] According to some embodiments of the present application, optionally, please refer to Figure 4 The shell 21 has a discharge port 211 , and the prevention and control structure 23 is used to drive the battery 22 in a thermal runaway state to be pushed out and / or slide out of the discharge port 211 .

[0084] The battery 22 can be transferred out of the outlet 211 by being pushed out or by sliding out. The "pushed out" method means that the prevention and control structure 23 applies a thrust to the battery 22, so that the battery 22 is pushed out of the outlet 211; and the "sliding out" method means that the battery 22 is no longer supported or blocked by the prevention and control structure 23, and slides out of the outlet 211 by its own weight.

[0085] The outlet 211 refers to a structure that allows the battery 22 to pass through and be transferred to the outside of the shell 21. The shape of the outlet 211 can be designed in a variety of ways, such as: circular, square, oval, rectangular, etc., as long as it can satisfy the passage of the battery 22. At the same time, the outlet 211 on the shell 21 can remain open all the time, or it can be intermittently closed. For example: a door body that can be automatically controlled to open and close is set on the outlet 211. When the battery 22 is in a thermal runaway state, the door body can be automatically opened, such as by using a micro motor to realize rotation and opening, etc. After the battery 22 is transferred out, the door body can be automatically closed.

[0086] In addition, since the triggering timing of the trigger device 30 and the prevention and control structure 23 can be set according to the program, the transferred battery 22 may be in the box 10 or in the partition device 40. When the transferred battery 22 is in the box 10, a cooling component 26 can be set in the box 10 so that the transferred battery 22 can fall into the cooling component 26. Of course, the transferred battery 22 can also fall into the partition device 40 through the opening 11, which can be specifically referred to Figure 5 .

[0087] In this way, the battery 22 in thermal runaway is isolated outside the housing 21 in a timely manner by pushing out or sliding out, thereby reducing the impact on other normal batteries 22 and achieving effective prevention and control of thermal runaway.

[0088] According to some embodiments of the present application, optionally, please refer to Figure 4 The prevention and control structure 23 includes a prevention and control body 232 and a supporting plate 231 disposed in the housing 21, and the battery 22 is supported on the supporting plate 231. The prevention and control body 232 is used to drive the battery 22 in a thermal runaway state to slide from the supporting plate 231 to the outside of the discharge port 211.

[0089] The supporting plate 231 refers to a structure that can support the battery 22 so that the battery 22 is stably installed in the housing 21. The supporting plate 231 can be set as a non-movable structure in the housing 21; it can also be set as a movable structure, for example: the supporting plate 231 can be turned over in the housing 21. When the supporting plate 231 is a non-movable structure, the fixing method on the housing 21 can be but not limited to bolt connection, clamping, welding, riveting, bonding, etc.

[0090] In order to improve the energy storage capacity of the energy storage device 20, a plurality of supporting plates 231 may be arranged in the housing 21; at the same time, the supporting plates 231 may be spaced and distributed along the height direction of the housing 21. When there are multiple supporting plates 231, the number of the prevention and control body 232 may be one, that is, the batteries 22 on the multiple supporting plates 231 are controlled by the same prevention and control body 232; or there may be multiple, for example: the prevention and control body 232 and the supporting plate 231 are arranged one to one.

[0091] The prevention and control body 232 refers to a structure that can slide the battery 22 off the supporting plate 231. For example, the prevention and control body 232 withdraws its obstruction to the battery 22, allowing the battery 22 to slide off the inclined supporting plate 231; or, the prevention and control body 232 drives the supporting plate 231 to flip, allowing the battery 22 to slide out of the supporting plate 231.

[0092] With such a design, the supporting plate 231 can not only stably support the battery 22, but also provide a basis for the prevention and control body 232 to drive the battery 22 to slide out, so as to achieve an effective prevention and control effect.

[0093] According to some embodiments of the present application, optionally, please refer to Figure 6 and Figure 7 The prevention and control body 232 includes a blocking member 23c, and the supporting plate 231 is tilted on the housing 21, and one end of the supporting plate 231 close to the discharge port 211 is lower than the other end of the supporting plate 231. The blocking member 23c is movably arranged on the supporting plate 231 and is used to abut against the battery 22. The blocking member 23c is configured to be able to flip or shrink and release the abutment with the battery 22.

[0094] The supporting plate 231 is arranged with a certain slope in the housing 21. When the battery 22 is placed on the supporting plate 231, it tends to slide out toward the discharge port 211 under its own weight. Therefore, a blocking member 23c is arranged on the supporting plate 231 to prevent the battery 22 from sliding out of the supporting plate 231 during normal operation.

[0095] When the battery 22 is detected to be in thermal runaway, the blocking member 23c will flip or shrink, releasing the contact with the battery 22, so that the battery 22 can smoothly slide out of the discharge port 211. In order to achieve the flipping of the blocking member 23c, a motor can be provided, for example: the blocking member 23c is hinged at one end of the support plate 231 close to the discharge port 211, and the motor is connected to the rotating shaft of the blocking member 23c through a gear set. At this time, if thermal runaway is detected, the motor drives the blocking member 23c to rotate under the control of a control system such as a BMS (Battery Management System); of course, the rotation of the blocking member 23c is also achieved through equipment with telescopic functions such as a cylinder or an electric cylinder.

[0096] In addition, the contraction of the blocking member 23c means that the blocking member 23c moves away from the original position under the action of external force, so that the battery 22 is not blocked by the blocking member 23c. The contraction of the blocking member can be designed in many ways, such as: the blocking member 23c slides up and down in a direction perpendicular to the surface of the support plate 231; or the support plate 231 is designed to be a hollow structure, such as: please refer to Figure 8, a shrinkage channel 23a is provided in the support plate 231, and a notch 23b connected to the shrinkage channel 23a is provided at one end of the support plate 231, and the blocking member 23c is accommodated in the shrinkage channel 23a, and at least partially extends out of the notch 23b and abuts against the battery 22. At this time, the portion of the blocking member 23c extending out of the notch 23b should have a certain flexibility and be bent. If thermal runaway is detected, the blocking member 23c is retracted into the shrinkage channel 23a under external force. This not only triggers the sliding of the battery 22, but also reduces the activity space of the blocking member 23c, thereby reducing the occupation of the internal space of the energy storage device 20.

[0097] It should be noted that the contraction of the barrier can be accomplished by a cylinder, a motor, an electric cylinder, etc. At the same time, if one end of the barrier 23c has a flexible function, attention should be paid to the setting of the inclination angle of the support plate 231. If the inclination angle is too large, the battery 22 may bend the barrier 23c and cause it to slide off.

[0098] In this way, by utilizing the flipping or contraction of the blocking member 23c, the battery 22 can slide out of the discharge port 211 in a timely and effective manner, thereby effectively preventing and controlling thermal runaway.

[0099] According to some embodiments of the present application, optionally, please refer to Fig. 9 The prevention and control body 232 includes a driving assembly 23d, and the supporting plate 231 is rotatably connected to the inner wall of the housing 21. The driving assembly 23d is used to drive the supporting plate 231 to rotate so that the battery 22 slides out of the discharge port 211.

[0100] The supporting plate 231 is rotatably mounted on the inner wall of the housing 21. When the supporting plate 231 rotates, the supporting plate 231 presents a certain slope, so that the battery 22 slides out of the discharge port 211 under the action of its own weight. For example, one end of the supporting plate 231 close to the discharge port 211 is rotatably connected to the inner wall of the housing 21; or, one end of the supporting plate 231 away from the discharge port 211 can be rotatably connected to the inner wall of the housing 21.

[0101] The driving assembly 23d refers to a device that provides power for the rotation of the supporting plate 231, which may be, but is not limited to, a cylinder, an electric cylinder, a hydraulic cylinder, etc. Of course, it may also be a motor, which uses the rotation of the motor to drive the supporting plate 231 to rotate. When the battery 22 is in a normal state, the supporting plate 231 is in or approximately in a horizontal state to provide a stable placement for the battery 22. When the battery 22 is detected to be in a thermal runaway state, the driving assembly 23d works to drive the supporting plate 231 to rotate in the housing 21, presenting a certain slope, so that the battery 22 slides out of the discharge port 211.

[0102] With such a design, the driving component 23d is utilized to actively change the tilt state of the support plate 231 in the event of thermal runaway, so that the battery 22 in thermal runaway can slide out of the discharge port 211 in time, reducing the impact on other batteries 22, thereby facilitating improving the reliability of the energy storage system 100.

[0103] According to some embodiments of the present application, optionally, please refer to Fig.10 The prevention and control structure 23 includes an ejection assembly 24 . The ejection assembly 24 is disposed on the inner wall of the housing 21 , and an ejection end of the ejection assembly 24 is used to abut against the battery 22 .

[0104] The ejection assembly 24 is a structure that can eject the battery 22 out of the discharge port 211. When the battery 22 is in a thermal runaway state, the ejection assembly 24 is triggered so that the ejection end of the ejection assembly 24 can push the battery 22 out of the discharge port 211. The structure of the ejection assembly 24 can have a variety of designs, for example: Fig.11 The ejection assembly 24 may include a bottom barrel 241, an ejection member 242, a spring 243 and a claw 244. The ejection member 242 is movably disposed in the bottom barrel 241, and the spring 243 abuts between the ejection member 242 and the bottom barrel 241. The claw 244 is rotatably connected to the bottom barrel 241 and is clamped on the ejection member 242. At this time, the spring 243 is in a compressed state. When the battery 22 is in a thermal runaway state, the claw 244 releases the ejection member 242, so that the ejection member 242 ejects the battery 22 out of the discharge port 211 under the action of the spring 243.

[0105] In addition, in addition to the ejection assembly 24, the blocking member 23c or the driving assembly 23d in the above embodiment may also be provided in the housing 21. For example, the support plate 231 is tiltedly provided in the housing 21, one end of which is rotatably connected to the blocking member 23c, and the other end of which has the ejection assembly 24. In this way, if the battery 22 has thermal runaway, the blocking member 23c will flip or shrink, and at the same time, the ejection assembly 24 will be activated to eject the battery 22 from the support plate 231, thereby accelerating the isolation of the battery 22.

[0106] With such a design, the ejection assembly 24 is used to actively eject the battery 22 out of the discharge port 211 , thereby isolating the thermal runaway source, reducing the risk of thermal runaway spreading, and improving the reliability of the energy storage system 100 .

[0107] According to some embodiments of the present application, optionally, please refer to Fig.12 The energy storage device 20 further includes a cooling component 26 disposed in the housing 21 , and a cooling chamber 261 is disposed on the cooling component 26 . The prevention and control structure 23 is configured to enable the battery 22 in a thermal runaway state to enter the cooling chamber 261 .

[0108] The cooling chamber 261 refers to the space inside the cooling assembly 26, one end of which is an open structure to facilitate the battery 22 to easily enter the cooling chamber 261. When the battery 22 with thermal runaway enters the cooling chamber 261, the cooling chamber 261 can isolate the heat released by the battery 22. The size of the space inside the cooling chamber 261 can be determined according to the size of the battery 22, for example: the size of the cooling chamber 261 can be sufficient to accommodate the battery 22.

[0109] When the prevention and control structure 23 is triggered, there are many ways for the battery 22 to enter the cooling chamber 261, such as: the prevention and control structure 23 is disconnected, so that the suspended battery 22 falls into the cooling chamber 261; or, the prevention and control structure 23 can be designed as a pushing device, such as a cylinder, an electric cylinder, etc., to push the battery 22 into the cooling chamber 261; or, the prevention and control structure 23 can also be designed as a telescopic structure, which can retract the battery 22 supported on the prevention and control structure 23 and drop it into the cooling chamber 261.

[0110] The number of cooling components 26 can be one or more. When there is one cooling component 26, multiple thermal runaway batteries 22 can enter the same cooling chamber 261 for cooling and isolation. When there are multiple cooling components 26, please refer to Fig.13 , multiple cooling components 26 can be distributed at intervals along the height direction of the shell 21, and the cooling components 26 and the batteries 22 can be configured one-to-one, for example: a cooling component 26 is placed under each battery 22.

[0111] In addition, there are many ways to install the cooling component 26 in the shell 21. For example, the cooling component 26 can be fixed to the inner wall of the shell 21 by bolt connection, clamping, welding, etc.; or, a support block 212 can be set on the inner wall of the shell 21, and the cooling component 26 can be placed on the support block 212, etc.

[0112] With such a design, a cooling component 26 is disposed in the housing 21 so that the battery 22 in a thermal runaway state can enter the cooling chamber 261 to isolate the thermal runaway source and achieve effective prevention and control.

[0113] According to some embodiments of the present application, optionally, the cooling component 26 includes a cooling body and a fire extinguishing agent, the cooling body is disposed in the shell 21, and a cooling chamber 261 is opened on the cooling body, and the fire extinguishing agent is contained in the cooling chamber 261.

[0114] The cooling body refers to a structure having a space for accommodating the battery 22 inside, and can be designed to be, but not limited to, cylindrical, rectangular, cube, etc.

[0115] The fire extinguishing agent refers to a material that can extinguish a fire in a battery 22 that is in thermal runaway, and can achieve a fire extinguishing effect by cutting off oxygen or lowering the temperature of the battery 22. There are many options for the material of the fire extinguishing agent, such as: the fire extinguishing agent can be but is not limited to ordinary water, a water-based fire extinguishing agent (water + surfactant), a foam fire extinguishing agent, liquid nitrogen, etc.

[0116] With such a design, a fire extinguishing agent is provided in the cooling body, so that the battery 22 in thermal runaway is effectively isolated, further reducing the risk of fire in the battery 22 and improving the reliability of the energy storage system 100.

[0117] According to some embodiments of the present application, optionally, please refer to Fig.12 The prevention and control structure 23 includes a hanging assembly 25, and the battery 22 is suspended above the cooling chamber 261 through the hanging assembly 25. The hanging assembly 25 is constructed to be disconnected when the battery 22 is in a thermal runaway state.

[0118] The hanging assembly 25 is a disconnectable structure. When the battery 22 in the energy storage device 20 experiences thermal runaway, the hanging assembly 25 is disconnected, causing the battery 22 in thermal runaway to fall into the cooling chamber 261. The hanging assembly 25 can be disconnected by explosives or blasting, or by power failure and demagnetization, so that the electromagnet and the adsorbed object are disconnected; of course, it can also be designed as a fusible structure, for example: when the battery 22 experiences thermal runaway, a large current is passed through the hanging assembly 25 to achieve a fusing effect.

[0119] With such a design, the disconnection method is utilized to facilitate the battery 22 in thermal runaway to fall into the cooling chamber 261 , so that the fire response of the energy storage system 100 is fast and the isolation is timely, further improving the reliability of the energy storage system 100 .

[0120] According to some embodiments of this application, please refer to Fig.14 The present application provides an energy storage prevention and control method, using any of the above energy storage systems 100, the energy storage prevention and control method comprises the following steps:

[0121] S100, determining whether the energy storage device 20 is in a thermal runaway state;

[0122] S200 , if the energy storage device 20 is in a thermal runaway state, the trigger device 30 is controlled to operate so that the energy storage device 20 in a thermal runaway state enters the isolation device 40 through the opening 11 .

[0123] In step S100, there are many ways to judge the energy storage device 20, for example, the operating parameters of the energy storage device 20 can be obtained through devices such as smoke sensors and temperature sensors. When one of the energy storage devices 20 has thermal runaway, the parameters obtained by the smoke sensor or the temperature sensor will exceed the set parameters. Of course, when obtaining the operating status of the energy storage device 20, other judgment methods can also be combined, such as: monitoring the operating current, operating voltage, and operating temperature of each energy storage device 20 through the BMS (Battery Management System). If an abnormality occurs in the monitored parameters, the faulty energy storage device 20 can be quickly and accurately located.

[0124] The above-mentioned energy storage prevention and control method adopts the above-mentioned energy storage system 100. When the energy storage device 20 is detected to have thermal runaway, the trigger device 30 is used to make the energy storage device 20 enter the isolation device 40, effectively controlling the heat diffusion, and playing an effective protective effect against thermal runaway, which is beneficial to improving the reliability of the system.

[0125] According to some embodiments of the present application, the present application provides an energy storage prevention and control system, including any of the above energy storage systems 100.

[0126] According to some embodiments of this application, please refer to Figure 3 and Figure 4 The present application provides an energy storage device 20, which includes: a housing 21, a battery 22, and a prevention and control structure 23. The battery 22 is accommodated in the housing 21. The prevention and control structure 23 is arranged in the housing 21. The prevention and control structure 23 is configured to enable the battery 22 in a thermal runaway state to enter the cooling component 26 in the housing 21 or be transferred out of the housing 21.

[0127] The prevention and control structure 23 refers to a structure that enables the battery 22 in thermal runaway to enter the cooling component 26 or be transferred out of the housing 21. For example, when the prevention and control structure 23 is triggered, the battery 22 loses support and falls into the cooling component 26 below; or, when the prevention and control structure 23 is triggered, the battery 22 can slide out of the housing 21 by its own weight; of course, the battery 22 in thermal runaway can also be actively pushed out or ejected out of the housing 21 by the prevention and control structure 23.

[0128] A cooling component 26 may or may not be provided in the energy storage device 20. When the cooling component 26 is provided, the battery 22 in thermal runaway may fall into the cooling component 26 for cooling; when the cooling component 26 is not provided, the battery 22 in thermal runaway may be transferred to the outside of the housing 21 by the prevention and control structure 23 to reduce its impact on the normal battery 22. The cooling component 26 refers to a container structure with a cooling material inside, such as ordinary water, water-based fire extinguishing agent, foam fire extinguishing agent, liquid nitrogen, etc. The energy storage device 20 of this embodiment may be integrated into the energy storage system 100, and may also be integrated into an electrical device to provide electrical energy for the electrical device. When the energy storage device 20 is integrated into the energy storage system 100, when the battery 22 is in thermal runaway, the prevention and control structure 23 may allow the battery 22 in thermal runaway to enter the cooling component 26 or be transferred out of the housing 21.

[0129] In addition, if the battery 22 in thermal runaway is transferred outside the housing 21, the battery 22 may fall into the partition device 40 in the above embodiment, or into a container containing fire extinguishing materials. Meanwhile, the battery 22 refers to a component that outputs electrical energy to the outside, and may have one or more battery 22 cells integrated therein.

[0130] In this way, the introduction of the prevention and control structure 23 not only allows the energy storage device 20 as a whole to be individually isolated for fire protection, but also allows the battery 22 in the energy storage device 20 to be processed individually, thereby achieving dual fire protection and further improving the reliability of the energy storage system 100.

[0131] According to some embodiments of the present application, optionally, please refer to Figure 4 The shell 21 has a discharge port 211 , and the prevention and control structure 23 is used to drive the battery 22 in a thermal runaway state to be pushed out and / or slide out of the discharge port 211 .

[0132] The battery 22 can be transferred out of the outlet 211 by being pushed out or by sliding out. The "pushed out" method means that the prevention and control structure 23 applies a thrust to the battery 22, so that the battery 22 is pushed out of the outlet 211; and the "sliding out" method means that the battery 22 is no longer supported or blocked by the prevention and control structure 23, and slides out of the outlet 211 by its own weight.

[0133] The outlet 211 refers to a structure that allows the battery 22 to pass through and be transferred to the outside of the shell 21. The shape of the outlet 211 can be designed in a variety of ways, such as: circular, square, oval, rectangular, etc., as long as it can satisfy the passage of the battery 22. At the same time, the outlet 211 on the shell 21 can remain open all the time, or it can be intermittently closed. For example: a door body that can be automatically controlled to open and close is set on the outlet 211. When the battery 22 is in a thermal runaway state, the door body can be automatically opened, such as by using a micro motor to realize rotation and opening, etc. After the battery 22 is transferred out, the door body can be automatically closed.

[0134] In this way, the battery 22 in thermal runaway is isolated outside the housing 21 in a timely manner by pushing out or sliding out, thereby reducing the impact on other normal batteries 22 and achieving effective prevention and control of thermal runaway.

[0135] According to some embodiments of the present application, optionally, please refer to Figure 4 The prevention and control structure 23 includes a prevention and control body 232 and a supporting plate 231 disposed in the housing 21, and the battery 22 is supported on the supporting plate 231. The prevention and control body 232 is used to drive the battery 22 in a thermal runaway state to slide from the supporting plate 231 to the outside of the discharge port 211.

[0136] The supporting plate 231 refers to a structure that can support the battery 22 so that the battery 22 is stably installed in the housing 21. The supporting plate 231 can be set as a non-movable structure in the housing 21; it can also be set as a movable structure, for example: the supporting plate 231 can be turned over in the housing 21. When the supporting plate 231 is a non-movable structure, the fixing method on the housing 21 can be but not limited to bolt connection, clamping, welding, riveting, bonding, etc.

[0137] In order to improve the energy storage capacity of the energy storage device 20, a plurality of supporting plates 231 may be arranged in the housing 21; at the same time, the supporting plates 231 may be spaced and distributed along the height direction of the housing 21. When there are multiple supporting plates 231, the number of the prevention and control body 232 may be one, that is, the batteries 22 on the multiple supporting plates 231 are controlled by the same prevention and control body 232; or there may be multiple, for example: the prevention and control body 232 and the supporting plate 231 are arranged one to one.

[0138] The prevention and control body 232 refers to a structure that can slide the battery 22 off the supporting plate 231. For example, the prevention and control body 232 withdraws its obstruction to the battery 22, allowing the battery 22 to slide off the inclined supporting plate 231; or, the prevention and control body 232 drives the supporting plate 231 to flip, allowing the battery 22 to slide out of the supporting plate 231.

[0139] With such a design, the supporting plate 231 can not only stably support the battery 22, but also provide a basis for the prevention and control body 232 to drive the battery 22 to slide out, so as to achieve an effective prevention and control effect.

[0140] According to some embodiments of the present application, optionally, please refer to Figure 6 and Figure 7 The prevention and control body 232 includes a blocking member 23c, and the supporting plate 231 is tilted on the housing 21, and one end of the supporting plate 231 close to the discharge port 211 is lower than the other end of the supporting plate 231. The blocking member 23c is movably arranged on the supporting plate 231 and is used to abut against the battery 22. The blocking member 23c is configured to be able to flip or shrink and release the abutment with the battery 22.

[0141] The supporting plate 231 is arranged with a certain slope in the housing 21. When the battery 22 is placed on the supporting plate 231, it tends to slide out toward the discharge port 211 under its own weight. Therefore, a blocking member 23c is arranged on the supporting plate 231 to prevent the battery 22 from sliding out of the supporting plate 231 during normal operation.

[0142] When the battery 22 is detected to be in thermal runaway, the blocking member 23c will flip or shrink, releasing the contact with the battery 22, so that the battery 22 can smoothly slide out of the discharge port 211. In order to achieve the flipping of the blocking member 23c, a motor can be provided, for example: the blocking member 23c is hinged at one end of the support plate 231 close to the discharge port 211, and the motor is connected to the rotating shaft of the blocking member 23c through a gear set. At this time, if thermal runaway is detected, the motor drives the blocking member 23c to rotate under the control of a control system such as a BMS (Battery Management System); of course, the rotation of the blocking member 23c is also achieved through equipment with telescopic functions such as a cylinder or an electric cylinder.

[0143] In addition, the contraction of the blocking member 23c means that the blocking member 23c moves away from the original position under the action of external force, so that the battery 22 is not blocked by the blocking member 23c. The contraction of the blocking member can be designed in many ways, such as: the blocking member 23c slides up and down in a direction perpendicular to the surface of the support plate 231; or the support plate 231 is designed to be a hollow structure, such as: please refer to Figure 8 , a shrinkage channel 23a is provided in the support plate 231, and a notch 23b connected to the shrinkage channel 23a is provided at one end of the support plate 231, and the blocking member 23c is accommodated in the shrinkage channel 23a, and at least partially extends out of the notch 23b and abuts against the battery 22. At this time, the portion of the blocking member 23c extending out of the notch 23b should have a certain flexibility and be bent. If thermal runaway is detected, the blocking member 23c is retracted into the shrinkage channel 23a under external force. This not only triggers the sliding of the battery 22, but also reduces the activity space of the blocking member 23c, thereby reducing the occupation of the internal space of the energy storage device 20.

[0144] It should be noted that the contraction of the barrier can be accomplished by a cylinder, a motor, an electric cylinder, etc. At the same time, if one end of the barrier 23c has a flexible function, attention should be paid to the setting of the inclination angle of the support plate 231. If the inclination angle is too large, the battery 22 may bend the barrier 23c and cause it to slide off.

[0145] In this way, by utilizing the flipping or contraction of the blocking member 23c, the battery 22 can slide out of the discharge port 211 in a timely and effective manner, thereby effectively preventing and controlling thermal runaway.

[0146] According to some embodiments of the present application, optionally, please refer to Fig. 9 The prevention and control body 232 includes a driving assembly 23d, and the supporting plate 231 is rotatably connected to the inner wall of the housing 21. The driving assembly 23d is used to drive the supporting plate 231 to rotate so that the battery 22 slides out of the discharge port 211.

[0147] The supporting plate 231 is rotatably mounted on the inner wall of the housing 21. When the supporting plate 231 rotates, the supporting plate 231 presents a certain slope, so that the battery 22 slides out of the discharge port 211 under the action of its own weight. For example, one end of the supporting plate 231 close to the discharge port 211 is rotatably connected to the inner wall of the housing 21; or, one end of the supporting plate 231 away from the discharge port 211 can be rotatably connected to the inner wall of the housing 21.

[0148] The driving assembly 23d refers to a device that provides power for the rotation of the supporting plate 231, which may be, but is not limited to, a cylinder, an electric cylinder, a hydraulic cylinder, etc. Of course, it may also be a motor, which uses the rotation of the motor to drive the supporting plate 231 to rotate. When the battery 22 is in a normal state, the supporting plate 231 is in or approximately in a horizontal state to provide a stable placement for the battery 22. When the battery 22 is detected to be in a thermal runaway state, the driving assembly 23d works to drive the supporting plate 231 to rotate in the housing 21, presenting a certain slope, so that the battery 22 slides out of the discharge port 211.

[0149] With such a design, the driving component 23d is utilized to actively change the tilt state of the support plate 231 in the event of thermal runaway, so that the battery 22 in thermal runaway can slide out of the discharge port 211 in time, reducing the impact on other batteries 22, thereby facilitating improving the reliability of the energy storage system 100.

[0150] According to some embodiments of the present application, optionally, please refer to Fig.10 The prevention and control structure 23 includes an ejection assembly 24 . The ejection assembly 24 is disposed on the inner wall of the housing 21 , and an ejection end of the ejection assembly 24 is used to abut against the battery 22 .

[0151] The ejection assembly 24 is a structure that can eject the battery 22 out of the discharge port 211. When the battery 22 is in a thermal runaway state, the ejection assembly 24 is triggered so that the ejection end of the ejection assembly 24 can push the battery 22 out of the discharge port 211. The structure of the ejection assembly 24 can have a variety of designs, for example: Fig.11 The ejection assembly 24 may include a bottom barrel 241, an ejection member 242, a spring 243 and a claw 244. The ejection member 242 is movably disposed in the bottom barrel 241, and the spring 243 abuts between the ejection member 242 and the bottom barrel 241. The claw 244 is rotatably connected to the bottom barrel 241 and is clamped on the ejection member 242. At this time, the spring 243 is in a compressed state. When the battery 22 is in a thermal runaway state, the claw 244 releases the ejection member 242, so that the ejection member 242 ejects the battery 22 out of the discharge port 211 under the action of the spring 243.

[0152] In addition, in addition to the ejection assembly 24, the blocking member 23c or the driving assembly 23d in the above embodiment may also be provided in the housing 21. For example, the support plate 231 is tiltedly provided in the housing 21, one end of which is rotatably connected to the blocking member 23c, and the other end of which has the ejection assembly 24. In this way, if the battery 22 has thermal runaway, the blocking member 23c will flip or shrink, and at the same time, the ejection assembly 24 will be activated to eject the battery 22 from the support plate 231, thereby accelerating the isolation of the battery 22.

[0153] With such a design, the ejection assembly 24 is used to actively eject the battery 22 out of the discharge port 211 , thereby isolating the thermal runaway source, reducing the risk of thermal runaway spreading, and improving the reliability of the energy storage system 100 .

[0154] According to some embodiments of the present application, optionally, please refer to Fig.12 The energy storage device 20 further includes a cooling component 26 disposed in the housing 21 , and a cooling chamber 261 is disposed on the cooling component 26 . The prevention and control structure 23 is configured to enable the battery 22 in a thermal runaway state to enter the cooling chamber 261 .

[0155] The cooling chamber 261 refers to the space inside the cooling assembly 26, one end of which is an open structure to facilitate the battery 22 to easily enter the cooling chamber 261. When the battery 22 with thermal runaway enters the cooling chamber 261, the cooling chamber 261 can isolate the heat released by the battery 22. The size of the space inside the cooling chamber 261 can be determined according to the size of the battery 22, for example: the size of the cooling chamber 261 can be sufficient to accommodate the battery 22.

[0156] When the prevention and control structure 23 is triggered, there are many ways for the battery 22 to enter the cooling chamber 261, such as: the prevention and control structure 23 is disconnected, so that the suspended battery 22 falls into the cooling chamber 261; or, the prevention and control structure 23 can be designed as a pushing device, such as a cylinder, an electric cylinder, etc., to push the battery 22 into the cooling chamber 261; or, the prevention and control structure 23 can also be designed as a telescopic structure, which can retract the battery 22 supported on the prevention and control structure 23 and drop it into the cooling chamber 261.

[0157] The number of cooling components 26 can be one or more. When there is one cooling component 26, multiple thermal runaway batteries 22 can enter the same cooling chamber 261 for cooling and isolation. When there are multiple cooling components 26, please refer to Fig.13 , multiple cooling components 26 can be distributed at intervals along the height direction of the shell 21, and the cooling components 26 and the batteries 22 can be configured one-to-one, for example: a cooling component 26 is placed under each battery 22.

[0158] In addition, there are many ways to install the cooling component 26 in the shell 21. For example, the cooling component 26 can be fixed to the inner wall of the shell 21 by bolt connection, clamping, welding, etc.; or, a support block 212 can be set on the inner wall of the shell 21, and the cooling component 26 can be placed on the support block 212, etc.

[0159] With such a design, a cooling component 26 is disposed in the housing 21 so that the battery 22 in a thermal runaway state can enter the cooling chamber 261 to isolate the thermal runaway source and achieve effective prevention and control.

[0160] According to some embodiments of the present application, optionally, the cooling component 26 includes a cooling body and a fire extinguishing agent, the cooling body is disposed in the shell 21, and a cooling chamber 261 is opened on the cooling body, and the fire extinguishing agent is contained in the cooling chamber 261.

[0161] The cooling body refers to a structure having a space for accommodating the battery 22 inside, and can be designed to be, but not limited to, cylindrical, rectangular, cube, etc.

[0162] The fire extinguishing agent refers to a material that can extinguish a fire in a battery 22 that is in thermal runaway, and can achieve a fire extinguishing effect by cutting off oxygen or lowering the temperature of the battery 22. There are many options for the material of the fire extinguishing agent, such as: the fire extinguishing agent can be but is not limited to ordinary water, a water-based fire extinguishing agent (water + surfactant), a foam fire extinguishing agent, liquid nitrogen, etc.

[0163] With such a design, a fire extinguishing agent is provided in the cooling body, so that the battery 22 in thermal runaway is effectively isolated, further reducing the risk of fire in the battery 22 and improving the reliability of the energy storage system 100.

[0164] According to some embodiments of the present application, optionally, please refer to Fig.12 The prevention and control structure 23 includes a hanging assembly 25, and the battery 22 is suspended above the cooling chamber 261 through the hanging assembly 25. The hanging assembly 25 is constructed to be disconnected when the battery 22 is in a thermal runaway state.

[0165] The hanging assembly 25 is a disconnectable structure. When the battery 22 in the energy storage device 20 experiences thermal runaway, the hanging assembly 25 is disconnected, causing the battery 22 in thermal runaway to fall into the cooling chamber 261. The hanging assembly 25 can be disconnected by explosives or blasting, or by power failure and demagnetization, so that the electromagnet and the adsorbed object are disconnected; of course, it can also be designed as a fusible structure, for example: when the battery 22 experiences thermal runaway, a large current is passed through the hanging assembly 25 to achieve a fusing effect.

[0166] With such a design, the disconnection method is utilized to facilitate the battery 22 in thermal runaway to fall into the cooling chamber 261 , so that the fire response of the energy storage system 100 is fast and the isolation is timely, further improving the reliability of the energy storage system 100 .

[0167] According to some embodiments of the present application, the present application provides an electrical device, which includes the energy storage device 20 of any one of the above items.

[0168] According to some embodiments of this application, please refer to Figures 1 to 14 , the present application provides an energy storage system 100. The energy storage system 100 includes a housing 10, an energy storage device 20, a partition device 40 and a trigger device 30. When thermal runaway occurs in the energy storage device 20, the trigger device 30 can drop the energy storage device 20 into the partition device 40 by disconnecting, and perform active isolation, effectively reduce heat diffusion, and improve the reliability of the energy storage system 100. In addition, the energy storage device 20 includes a shell 21, a battery 22 and a prevention and control structure 23. The prevention and control structure 23 transfers the battery 22 in thermal runaway out of the shell 21 by ejection, sliding, etc., and also achieves active isolation, further reducing heat diffusion.

[0169] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0170] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An energy storage system, characterized in that: The energy storage system comprises: A box body (10) having an opening (11); An energy storage device is movably arranged in the box (10); A trigger device (30) is provided on the box (10) and is configured to cause the energy storage device in thermal runaway to move from the opening (11) to be separated from the box (10); The isolation device (40) is located downstream in the moving direction of the energy storage device after it detaches from the opening (11), and is used to receive the energy storage device detached from the opening (11) to isolate the energy storage device from thermal runaway.

2. The energy storage system according to claim 1, characterized in that: The energy storage device is installed in the box (10) through the trigger device (30) and is located above the opening (11). The trigger device (30) is configured to cause the energy storage device in a thermal runaway state to fall into the opening (11).

3. The energy storage system according to claim 2, characterized in that: The trigger device (30) is constructed as a disconnectable structure, and the trigger device (30) is triggered to disconnect, so that the energy storage device in a thermal runaway state falls into the opening (11).

4. The energy storage system according to claim 3, characterized in that: The trigger device (30) comprises a hanging part (31), a disconnecting part (33), and a mounting part (32) connected to the hanging part (31) via the disconnecting part (33); the hanging part (31) is fixed to the inner wall of the box (10); the mounting part (32) is connected to the energy storage device; and the disconnecting part (33) is constructed as a structure that can be triggered to disconnect.

5. The energy storage system according to any one of claims 1 to 4, characterized in that: The energy storage device comprises: Housing (21); A battery (22) is housed in the housing (21); A prevention and control structure (23) is arranged in the housing (21); The prevention and control structure (23) is configured to force the battery (22) in a thermal runaway state to enter a cooling component (26) in the housing (21) or to be transferred out of the housing (21).

6. The energy storage system according to claim 5, characterized in that: The housing (21) is provided with a discharge port (211), and the prevention and control structure (23) is used to drive the battery (22) in a thermal runaway state to be pushed out and / or slide out of the discharge port (211).

7. The energy storage system according to claim 6, characterized in that: The control structure (23) comprises a control body (232) and a supporting plate (231) arranged in the shell (21); the battery (22) is supported on the supporting plate (231); and the control body (232) is used to drive the battery (22) in a thermal runaway state to slide from the supporting plate (231) out of the discharge port (211).

8. The energy storage system according to claim 7, characterized in that: The prevention and control body (232) includes a blocking member (23c), the supporting plate (231) is tilted on the shell (21), and one end of the supporting plate (231) close to the discharge port (211) is lower than the other end of the supporting plate (231), the blocking member (23c) is movably arranged on the supporting plate (231) and is used to abut against the battery (22), and the blocking member (23c) is configured to be able to flip or shrink and release the abutment with the battery (22).

9. The energy storage system according to claim 7, characterized in that: The control body (232) includes a driving component (23d), and the supporting plate (231) is rotatably connected to the inner wall of the shell (21), and the driving component (23d) is used to drive the supporting plate (231) to rotate so that the battery (22) slides out of the discharge port (211).

10. The energy storage system according to any one of claims 6 to 9, characterized in that: The prevention and control structure (23) comprises an ejection component (24), the ejection component (24) is arranged on the inner wall of the shell (21), and the ejection end of the ejection component (24) is used to abut against the battery (22).

11. The energy storage system according to claim 5, characterized in that: The energy storage device further comprises a cooling component (26) arranged in the housing (21), the cooling component (26) being provided with a cooling chamber (261), and the prevention and control structure (23) being configured to enable the battery (22) in a thermal runaway state to enter the cooling chamber (261).

12. The energy storage system according to claim 11, characterized in that: The cooling component (26) comprises a cooling body and a fire extinguishing agent, the cooling body is arranged in the shell (21), and the cooling chamber (261) is opened on the cooling body, and the fire extinguishing agent is contained in the cooling chamber (261); and / or, The prevention and control structure (23) comprises a hanging assembly (25), the battery (22) is suspended above the cooling chamber (261) via the hanging assembly (25), and the hanging assembly (25) is constructed to be disconnected when the battery (22) is in a thermal runaway state.

13. A method for energy storage prevention and control, characterized in that: Using the energy storage system according to any one of claims 1 to 12, the energy storage prevention and control method comprises the following steps: Determine whether the energy storage device is in a thermal runaway state; If the energy storage device is in a thermal runaway state, the trigger device (30) is controlled to operate so that the energy storage device in the thermal runaway state enters the isolation device (40) through the opening (11).

14. An energy storage control system, characterized in that: An energy storage system comprising any one of claims 1-12.

15. An energy storage device, characterized in that: The energy storage device comprises: Housing (21); A battery (22) is housed in the housing (21); A prevention and control structure (23) is arranged in the housing (21); The prevention and control structure (23) is configured to force the battery (22) in a thermal runaway state to enter a cooling component (26) in the housing (21) or to be transferred out of the housing (21).

16. The energy storage device according to claim 15, characterized in that: The housing (21) is provided with a discharge port (211), and the prevention and control structure (23) is used to drive the battery (22) in a thermal runaway state to be pushed out and / or slide out of the discharge port (211).

17. The energy storage device according to claim 16, characterized in that: The prevention and control structure (23) comprises a prevention and control body (232) and a supporting plate (231) arranged in the shell (21); the battery (22) is supported on the supporting plate (231); and the prevention and control body (232) is used to drive the battery (22) in a thermal runaway state to slide from the supporting plate (231) out of the discharge port (211).

18. The energy storage device according to claim 17, characterized in that: The prevention and control body (232) includes a blocking member (23c), the supporting plate (231) is tilted on the shell (21), and one end of the supporting plate (231) close to the discharge port (211) is lower than the other end of the supporting plate (231), the blocking member (23c) is movably arranged on the supporting plate (231) and is used to abut against the battery (22), and the blocking member (23c) is configured to be able to flip or shrink and release the abutment with the battery (22).

19. The energy storage device according to claim 17, characterized in that: The control body (232) includes a driving component (23d), and the supporting plate (231) is rotatably connected to the inner wall of the shell (21), and the driving component (23d) is used to drive the supporting plate (231) to rotate so that the battery (22) slides out of the discharge port (211).

20. The energy storage device according to any one of claims 16 to 19, characterized in that: The prevention and control structure (23) comprises an ejection component (24), the ejection component (24) is arranged on the inner wall of the shell (21), and the ejection end of the ejection component (24) is used to abut against the battery (22).

21. The energy storage device according to claim 15, characterized in that: The energy storage device further comprises a cooling component (26) arranged in the housing (21), the cooling component (26) being provided with a cooling chamber (261), and the prevention and control structure (23) being configured to enable the battery (22) in a thermal runaway state to enter the cooling chamber (261).

22. The energy storage device according to claim 21, characterized in that: The cooling component (26) comprises a cooling body and a fire extinguishing agent, the cooling body is arranged in the shell (21), and the cooling chamber (261) is opened on the cooling body, and the fire extinguishing agent is contained in the cooling chamber (261); and / or, The prevention and control structure (23) comprises a hanging assembly (25), the battery (22) is suspended above the cooling chamber (261) via the hanging assembly (25), and the hanging assembly (25) is constructed to be disconnected when the battery (22) is in a thermal runaway state.

23. An electrical device, characterized in that: The electrical device comprises the energy storage device according to any one of claims 15-22.

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