Battery storage device and battery storage system

Abstract

The utility model discloses a battery storage device and a battery storage system.The battery storage device comprises a box body, an isolation mechanism and a driving mechanism, the box body is used for containing a battery device, an opening is formed in the box body, the box body comprises a top plate and a bottom plate which are oppositely arranged, the opening is located between the bottom plate and the top plate, and the bottom plate is used for bearing the battery device; the isolation mechanism is arranged on the top plate close to the opening; the driving mechanism is connected with the isolation mechanism and used for driving the isolation mechanism to be opened so as to cover the opening. The storage safety performance of the battery device is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery storage device and a battery storage system. Background Art

[0002] In recent years, with the rapid development of new energy technology, new energy vehicles have been used more and more widely, gradually replacing traditional fuel vehicles and becoming one of the mainstream means of transportation. As the power source of new energy vehicles, power batteries are one of the core devices of new energy vehicles.

[0003] In the development of battery technology, how to improve the storage safety performance of battery devices is a research direction in battery technology. Utility Model Content

[0004] Embodiments of the present application provide a battery storage device and a battery storage system, which can improve the storage safety performance of the battery device.

[0005] In a first aspect, an embodiment of the present application provides a battery storage device, which includes a box, an isolation mechanism and a driving mechanism. The box is used to accommodate the battery device, and the box is provided with an opening. The box includes a top plate and a bottom plate arranged opposite to each other, and the opening is located between the bottom plate and the top plate, and the bottom plate is used to support the battery device; the isolation mechanism is arranged at a position on the top plate close to the opening; the driving mechanism is connected to the isolation mechanism, and the driving mechanism is used to drive the isolation mechanism to open to cover the opening.

[0006] In the above scheme, under normal conditions, the isolation mechanism is not opened and the opening is not covered, so that the battery device can be easily taken in and out. If the battery device has thermal runaway, the driving mechanism drives the isolation mechanism to open and cover the opening to prevent oxygen outside the box from entering the box, thereby preventing thermal runaway from further deteriorating to a certain extent and improving the storage safety performance of the battery device.

[0007] In some embodiments, the battery storage device further includes a temperature sensor disposed in the box, and the temperature sensor is communicatively connected to the driving mechanism.

[0008] In the above scheme, when the temperature sensor senses that the temperature inside the box reaches a preset value of thermal runaway, a signal can be transmitted to the driving mechanism, and the driving mechanism drives the isolation mechanism to open, so as to further accurately control the thermal runaway from further deterioration.

[0009] In some embodiments, the battery storage device further includes an alarm mechanism disposed on the housing, and the alarm mechanism is communicatively connected to the temperature sensor.

[0010] In the above scheme, when the temperature sensor senses that the temperature inside the box reaches the preset value of thermal runaway, it can transmit a signal to the alarm mechanism, which sounds an alarm to remind workers or users that the battery device has thermal runaway, further improving the storage safety performance of the battery device.

[0011] In some embodiments, the isolation mechanism includes a winding mechanism, which includes a first fixing member and a winding member, the first fixing member includes a fixing portion and a rotating shaft rotatably connected to the fixing portion, the fixing portion is connected to the top plate of the box body, the rotating shaft is connected to a driving mechanism, and the driving mechanism is used to drive the rotating shaft to rotate; the winding member is wound on the rotating shaft, and the winding member is used to cover the opening.

[0012] In the above scheme, the driving mechanism drives the rotating shaft to rotate, which drives the winding member to rotate, so that the winding member can fall down to cover the opening and isolate the oxygen outside the box from entering the inside of the box. The structure is simple and the cost is low.

[0013] In some embodiments, the winding comprises a fire resistant material.

[0014] In the above scheme, fireproof materials can further reduce the risk of thermal runaway worsening.

[0015] In some embodiments, the insulating mechanism further includes a weight-increasing member, and the weight-increasing member is disposed at a free end of the winding member along its own winding direction.

[0016] In the above scheme, by arranging a weight-increasing member at the free end of the winding member, the winding member can be kept in a vertical state when falling, thereby covering the opening more tightly and improving the sealing performance of the winding member.

[0017] In some embodiments, the insulating mechanism includes a nozzle mechanism, which includes a pipe and a plurality of nozzles connected to the pipe, the pipe is connected to the top plate of the box, and the nozzles are used to spray water mist to cover the opening.

[0018] In the above scheme, when thermal runaway occurs in the battery device in the box, the nozzle can spray water mist, thereby isolating the oxygen outside the box from entering the inside of the box.

[0019] In some embodiments, the nozzle is a fan nozzle.

[0020] In the above solution, the fan-shaped nozzle can cover a larger area in the horizontal or vertical direction, so that a smaller number of nozzles can be used to achieve the purpose of covering the opening.

[0021] In some embodiments, the spray angle of the nozzle is greater than or equal to 90° and less than or equal to 150°.

[0022] In the above scheme, by limiting the range of the spray angle, effective coverage of a certain area can be achieved, which helps to balance the impact force and spray distance of the liquid.

[0023] In some embodiments, the spray angle of the nozzle is greater than or equal to 120°.

[0024] In the above scheme, by further limiting the range of the spray angle, a certain area can be effectively covered further, and the impact force and spray distance of the liquid can be further balanced.

[0025] In a second aspect, an embodiment of the present application further provides a battery storage system, comprising a battery storage device according to any of the above embodiments.

[0026] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0029] Figure 2 An exploded view of a battery device according to some embodiments of the present application;

[0030] Figure 3 A schematic diagram of the structure of a battery module according to some embodiments of the present application;

[0031] Figure 4 A schematic diagram of the exploded structure of a battery cell according to some embodiments of the present application;

[0032] Figure 5 is a schematic diagram of the structure of a battery storage device in some embodiments of the present application;

[0033] Figure 6 is a block diagram of a battery storage device according to some embodiments of the present application;

[0034] Figure 7 is a side view of a battery storage device according to some embodiments of the present application;

[0035] Figure 8 is a cross-sectional schematic diagram of a battery storage device according to some embodiments of the present application;

[0036] Fig. 9is a schematic structural diagram of a battery storage device in some other embodiments of the present application;

[0037] Fig.10 is a schematic structural diagram of a battery storage device in some other embodiments of the present application;

[0038] Fig.11 is a schematic structural diagram of a battery storage device according to some further embodiments of the present application;

[0039] Fig.12 2 is a cross-sectional schematic diagram of a battery storage device according to some further embodiments of the present application.

[0040] Description of reference numerals:

[0041] 1000, vehicle; 100, battery device; 200, controller; 300, motor; 10, upper cover; 30, lower cover; 400, battery module; 20, battery cell; 21, end cover; 22, shell; 23, electrode assembly; 26, electrode terminal; 500, battery storage device; 40, box; 41, opening; 42, bottom plate; 43, top plate; 50, isolation mechanism; 51, winding mechanism; 511, first fixing member; 512, winding member; 513, fixing part; 514, rotating shaft; 515, weight-increasing member; 52, nozzle mechanism; 521, pipeline; 522, nozzle; 60, driving mechanism; 70, temperature sensor; 80, alarm mechanism; 90, control unit. DETAILED DESCRIPTION

[0042] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0043] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do 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. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0044] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0045] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] In the present application, battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells or magnesium-ion battery cells, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0047] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, in parallel or in mixed connection through a busbar.

[0048] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0049] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0050] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0051] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0052] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0053] Battery storage devices are generally equipped with openings as the required passages for the battery devices to enter and exit, which can be considered to be in a semi-open space. When the battery device has an unexpected thermal runaway, the external environment will provide a continuous supply of oxygen, increasing the risk of uncontrolled fire, thereby worsening storage safety and reducing the storage safety performance of the battery device.

[0054] In order to solve the above technical problems, an embodiment of the present application provides a battery storage device, which includes a box, an isolation mechanism and a driving mechanism. The box is used to accommodate the battery device, and the box is provided with an opening. The box includes a top plate and a bottom plate arranged opposite to each other, and the opening is located between the bottom plate and the top plate, and the bottom plate is used to support the battery device; the isolation mechanism is arranged at a position on the top plate close to the opening; the driving mechanism is connected to the isolation mechanism, and the driving mechanism is used to drive the isolation mechanism to open to cover the opening.

[0055] In the above scheme, under normal conditions, the isolation mechanism is not opened and the opening is not covered, so that the battery device can be easily taken in and out. If the battery device has thermal runaway, the driving mechanism drives the isolation mechanism to open and cover the opening to prevent oxygen outside the box from entering the box, thereby preventing thermal runaway from further deteriorating to a certain extent and improving the storage safety performance of the battery device.

[0056] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0057] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0058] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0059] Please refer to Figure 2 , Figure 2 An exploded view of a device provided for some embodiments of the present application. The battery device 100 includes a battery case and a battery cell 20. In some embodiments, the battery case may include an upper cover 10 and a lower cover 30, the upper cover 10 and the lower cover 30 are covered with each other, and the upper cover 10 and the lower cover 30 jointly define a receiving cavity for accommodating the battery cell 20. The lower cover 30 may be a hollow structure with one end open, and the upper cover 10 may be a plate-like structure, and the upper cover 10 is covered on the open side of the lower cover 30, so that the upper cover 10 and the lower cover 30 jointly define a receiving cavity; the upper cover 10 and the lower cover 30 may also be hollow structures with one side open, and the open side of the upper cover 10 is covered on the open side of the lower cover 30. Of course, the battery case formed by the upper cover 10 and the lower cover 30 may be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0060] Figure 3 This is a schematic diagram of the structure of the battery module of some embodiments of the present application. In the battery device 100, there can be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection. Mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in a box; of course, the battery device 100 can also be in the form of multiple battery cells 20 first connected in series, in parallel, or in a mixed connection to form a battery module 400, and the multiple battery modules 400 are then connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in a box. The battery device 100 may also include other structures. For example, the battery device 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0061] Each battery cell 20 may be a secondary battery cell or a primary battery cell, or a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0062] Please refer to Figure 4 , Figure 4 Schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application. A battery cell 20 refers to the smallest unit constituting a battery. The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23 and other functional components.

[0063] The end cap 21 refers to a component that covers the opening of the shell 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 can be adapted to the shape of the shell 22 to match the shell 22. Optionally, the end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 21 is not easily deformed when squeezed and collided, so that the battery cell 20 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 26 can be provided on the end cap 21. The electrode terminal 26 can be used to electrically connect to the electrode assembly 23 for outputting or inputting electrical energy of the battery cell 20. In some embodiments, the end cap 21 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The material of the end cap 21 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this. In some embodiments, an insulating member may be provided inside the end cap 21, and the insulating member may be used to isolate the electrical connection components in the housing 22 from the end cap 21 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0064] Figure 5 is a schematic diagram of the structure of a battery storage device in some embodiments of the present application; Figure 6 is a block diagram of a battery storage device according to some embodiments of the present application.

[0065] Please refer to Figure 5 and Figure 6In the first aspect, an embodiment of the present application provides a battery storage device 500, which includes a box body 40, an isolation mechanism 50 and a driving mechanism 60. The box body 40 is used to accommodate a battery device 100. The box body 40 is provided with an opening 41. The box body 40 includes a top plate 43 and a bottom plate 42 that are arranged opposite to each other. The opening 41 is located between the bottom plate 42 and the top plate 43. The bottom plate 42 is used to support the battery device 100; the isolation mechanism 50 is arranged at a position of the top plate 43 close to the opening 41; the driving mechanism 60 is connected to the isolation mechanism 50, and the driving mechanism 60 is used to drive the isolation mechanism 50 to open to cover the opening 41.

[0066] In the automated production line of a factory, a large number of battery devices 100 need to be temporarily stored and transported. Therefore, the battery storage device 500 of the embodiment of the present application can be used to store the battery devices 100 on the production line. Or in the energy storage system, the battery storage device 500 of the embodiment of the present application can be used to store energy storage batteries. Or the battery storage device 500 of the embodiment of the present application can also be used to store the battery devices 100 in the battery swap station, or can also be used to store the battery devices 100 in ships or vehicles.

[0067] There may be a plurality of battery storage devices 500 , and the plurality of battery storage devices 500 are placed on a shelf to store a plurality of battery devices 100 .

[0068] The box body 40 may be in the shape of a cuboid, a cube, a cylinder, etc. An opening 41 of the box body 40 is disposed on a side of the box body 40 to facilitate taking in and out the battery device 100 .

[0069] The driving mechanism 60 may be a motor, a cylinder or a hydraulic cylinder, etc. The isolating mechanism 50 may include at least one of a winding mechanism 51, a nozzle mechanism 52 and a baffle. For example, the isolating mechanism 50 includes a winding mechanism 51, and the driving mechanism 60 can drive the winding member 512 in the winding mechanism 51 to rotate, and the winding member 512 is used to cover the opening 41. The nozzle 522 of the nozzle mechanism 52 is used to spray water mist to cover the opening 41. Alternatively, the isolating mechanism 50 is a structure similar to a baffle, and the motor can drive the isolating mechanism 50 to move through a transmission device (such as a gear, a chain or a belt, etc.).

[0070] In addition, the battery storage device 500 further includes a control unit 90, which is connected to the driving mechanism 60. The control unit 90 may include a microcontroller or a programmable logic controller (PLC). The control unit 90 can control the opening or closing of the driving mechanism 60, and can also adjust the power of the driving mechanism 60.

[0071] In the above scheme, under normal conditions, the isolation mechanism 50 is not opened and does not cover the opening 41, which facilitates the removal of the battery device 100. If thermal runaway occurs in the battery device 100, the drive mechanism 60 drives the isolation mechanism 50 to open and cover the opening 41 to prevent oxygen outside the box 40 from entering the box 40, thereby preventing thermal runaway from further deteriorating to a certain extent and improving the storage safety performance of the battery device 100.

[0072] In some embodiments, the battery storage device 500 further includes a temperature sensor 70 disposed in the housing 40 , and the temperature sensor 70 is in communication with the driving mechanism 60 .

[0073] The temperature sensor 70 is connected to the drive mechanism 60 through the control unit 90. The temperature sensor 70 plays a monitoring role in the battery storage device 500. It can sense the temperature changes in the box 40 in real time and convert the temperature signal into an electrical signal. Since the temperature sensor 70 is connected to the drive mechanism 60 in communication, these electrical signals will be transmitted to the control unit 90, and then the control unit 90 determines whether to turn on the drive mechanism 60. For example, according to the temperature setting threshold of thermal runaway, when the temperature sensor 70 detects that the temperature in the box 40 rises to the set threshold, it will send a signal to the control unit 90. After receiving the signal, the control unit 90 can turn on the drive mechanism 60 according to a pre-set program.

[0074] In the above solution, when the temperature sensor 70 senses that the temperature in the box 40 reaches the preset value of thermal runaway, it can transmit a signal to the driving mechanism 60, and the driving mechanism 60 drives the isolation mechanism 50 to open, so as to further accurately control the thermal runaway from further deterioration.

[0075] In some embodiments, the battery storage device 500 further includes an alarm mechanism 80 disposed on the housing 40 , and the alarm mechanism 80 is in communication with the temperature sensor 70 .

[0076] The temperature sensor 70 may be connected to the alarm mechanism 80 via the control unit 90 , or the temperature sensor 70 may be directly connected to the alarm mechanism 80 .

[0077] The alarm mechanism 80 may be at least one of a sound alarm mechanism, a light alarm mechanism, a vibration alarm mechanism or a wireless signal alarm mechanism.

[0078] The temperature sensor 70 is responsible for real-time monitoring of the temperature inside the box 40, and converting the detected temperature data into corresponding electrical signals and transmitting them to the control unit 90, which controls the opening of the alarm mechanism 80; or converting the detected temperature data into corresponding electrical signals and transmitting them to the alarm mechanism 80. For example, once the temperature exceeds the preset normal range, such as when the battery device 100 reaches the critical temperature of thermal runaway, the temperature sensor 70 will send a signal to the alarm mechanism 80 to trigger the alarm action. After receiving the signal from the temperature sensor 70, the alarm device will issue an alarm in various forms such as sound and light to remind the surrounding staff to know in time that the battery storage device 500 has an abnormal temperature. For example, bright flashing lights and harsh alarm sounds will be emitted, so that even if the staff is not near the box 40, they can detect the abnormality at a long distance so that they can quickly take corresponding countermeasures.

[0079] In the above scheme, when the temperature sensor 70 senses that the temperature in the box 40 reaches the preset value of thermal runaway, it can transmit a signal to the alarm mechanism 80, and the alarm mechanism 80 sounds an alarm to remind the worker or user that the battery device 100 has thermal runaway, thereby further improving the storage safety performance of the battery device 100.

[0080] Figure 7 is a side view of a battery storage device according to some embodiments of the present application; Figure 8 is a cross-sectional schematic diagram of a battery storage device according to some embodiments of the present application; Fig. 9 It is a schematic diagram of the structure of a battery storage device according to some other embodiments of the present application.

[0081] Please refer to Figure 7-Figure 9 In some embodiments, the isolation mechanism 50 includes a winding mechanism 51, the winding mechanism 51 includes a first fixing member 511 and a winding member 512, the first fixing member 511 includes a fixing portion 513 and a rotating shaft 514 rotatably connected to the fixing portion 513, the fixing portion 513 is connected to the top plate 43 of the box body 40, the rotating shaft 514 is connected to the driving mechanism 60, and the driving mechanism 60 is used to drive the rotating shaft to rotate; the winding member 512 is wound on the rotating shaft 514, and the winding member 512 is used to cover the opening 41.

[0082] The rotating shaft 514 is rotatably connected to the fixing portion 513, so that the rotating shaft 514 can flexibly rotate relative to the fixing portion 513. The rotatable connection between the rotating shaft 514 and the fixing portion 513 can be achieved through a bearing, which can reduce the friction during the rotation process and ensure the smoothness of the rotation. The fixing portion 513 can be firmly connected to the top plate 43 by welding, bolt connection, etc.

[0083] The rotating shaft 514 and the driving mechanism 60 can be connected through mechanical transmission components, such as couplings, chains, gears, etc. If connected through a coupling, when the driving mechanism 60 outputs power, the power can be directly transmitted to the rotating shaft 514, so that it rotates according to the instructions of the driving mechanism 60. If a chain or gear transmission is adopted, a speed change function can also be realized, and the winding speed of the winding member 512 can be adjusted according to actual needs.

[0084] The winding member 512 may be a rolling curtain, which has good flexibility, so that it can be easily rolled on the rotating shaft 514. When the opening 41 needs to be covered, it can be smoothly unfolded and fit the shape of the opening 41 to cover it. Alternatively, the winding member 512 may also be a metal foil or the like.

[0085] Under normal circumstances, the driving mechanism 60 does not receive a signal that the opening 41 needs to be covered, the rotating shaft 514 remains stationary or in a certain position, the winding member 512 is wound on the rotating shaft 514, and the opening 41 is open. When the battery device 100 has thermal runaway or other conditions, the driving mechanism 60 starts to work after receiving a signal and drives the rotating shaft 514 to rotate. The rotation of the rotating shaft 514 causes the winding member 512 to gradually unfold from the wound state, and the unfolded winding member 512 moves downward, and finally covers the opening 41 of the box body 40.

[0086] In the above scheme, the rotating shaft 514 is driven to rotate by the driving mechanism 60, which drives the winding member 512 to rotate, so that the winding member 512 can fall, cover the opening 41, and isolate the oxygen outside the box 40 from entering the inside of the box 40. The structure is simple and the cost is low. Specifically, the winding mechanism 51 has the advantage of small space occupation. When the winding member 512 is wound on the rotating shaft 514, it will not occupy too much space around the box 40, which is very beneficial for the battery storage area with limited space. At the same time, the movement of the winding mechanism 51 is relatively flexible. By controlling the rotation direction and number of turns of the driving mechanism 60, the unfolding and winding degree of the winding member 512 can be accurately controlled, so as to accurately realize the covering and opening of the opening 41. Compared with some traditional flip-top or translational isolation mechanisms 50, the mechanical structure of the winding mechanism 51 is relatively simple, which reduces the possible failure points due to the complex mechanical structure and improves the reliability of the entire isolation mechanism 50.

[0087] In some embodiments, winding 512 includes a fire resistant material.

[0088] The winding member 512 is directly made of fireproof material, or the fireproof material is coated on the outer surface of the winding member 512. The fireproof material can be glass fiber cloth, ceramic fiber blanket, fireproof coating fabric, etc.

[0089] Glass fiber cloth is a fabric woven from glass fiber. It has the remarkable characteristic of high temperature resistance and can generally withstand high temperatures of several hundred degrees Celsius without being burned.

[0090] Ceramic fiber blanket is a flexible material made of ceramic fibers such as aluminum silicate. It has a very low thermal conductivity, excellent thermal insulation properties, and can effectively block the spread of heat.

[0091] Fire-resistant coated fabrics are fire-resistant fabrics that are coated with fire-resistant coatings on the basis of ordinary fabrics. Fire-resistant coatings usually contain some flame retardant ingredients, such as phosphorus-based flame retardants, nitrogen-based flame retardants, etc. Phosphorus-based flame retardants can decompose at high temperatures to produce substances such as phosphoric acid, which can form a protective film on the surface of the fabric, isolating oxygen and preventing the release of combustible gases; nitrogen-based flame retardants can decompose to produce non-combustible gases, diluting the concentration of surrounding combustible gases and acting as heat insulation. Moreover, this type of fabric retains a certain degree of flexibility, making it easy to wind on the rotating shaft 514, and the cost is relatively moderate.

[0092] In the above scheme, fireproof materials can further reduce the risk of thermal runaway worsening.

[0093] Fig.10 Schematic diagram of the structure of battery storage devices according to some other embodiments of the present application.

[0094] like Fig.10 As shown, in some embodiments, the insulating mechanism 50 further includes a weight-increasing member 515 , and the weight-increasing member 515 is disposed at a free end of the winding member 512 along its own winding direction.

[0095] When the winding member 512 is unfolded to cover the opening 41, if there is no weight-increasing member 515, it may swing, tilt, etc. due to the influence of factors such as air flow and uneven material, and cannot guarantee vertical fall. The weight-increasing member 515 is set at the free end of the winding member 512 along its own winding direction, and uses the effect of gravity to enable the winding member 512 to overcome external interference factors when unfolding and fall stably in the vertical direction, just like adding a "stabilizer" to the winding member 512 to guide it to accurately cover the opening 41.

[0096] When the winding member 512 can fall vertically, it will fit more closely and evenly with the edge of the opening 41 of the box body 40. After falling into place, the weight of the weight-increasing member 515 will further exert a downward pulling force on the winding member 512, so that the winding member 512 is better pressed on the surface of the box body 40 around the opening 41, thereby reducing the possible gap between the two, covering the opening 41 more tightly, effectively preventing external oxygen from entering the box body 40 through these gaps, and enhancing the sealing performance of the winding member 512.

[0097] Among them, metals such as iron blocks and copper blocks can be selected as the material of the weight-increasing member 515, or high-density ceramic materials can also be selected. The weight-increasing member 515 can be designed to be long strips and distributed along the edge of the free end of the winding member 512. Such a shape is conducive to evenly dispersing the weight, so that the forces on various parts of the winding member 512 are relatively balanced during the falling process, and the winding member 512 is prevented from twisting due to uneven local forces. Alternatively, a block-shaped design is adopted, and the block-shaped weight-increasing member 515 is placed at a suitable position of the free end of the winding member 512, such as the center or several key force points, which can also play a role in increasing weight and guiding vertical falling.

[0098] In the above solution, by providing a weight-increasing member 515 at the free end of the winding member 512 , the winding member 512 can be kept in a vertical state when falling, thereby covering the opening 41 more tightly and improving the sealing performance of the winding member 512 .

[0099] Fig.11 is a schematic structural diagram of a battery storage device according to some further embodiments of the present application; Fig.12 2 is a cross-sectional schematic diagram of a battery storage device according to some further embodiments of the present application.

[0100] Please refer to Fig.11 and Fig.12 In some embodiments, the isolation mechanism 50 includes a nozzle mechanism 52, which includes a pipe 521 and a plurality of nozzles 522 connected to the pipe 521, the pipe 521 is connected to the top plate 43 of the box body 40, and the nozzles 522 are used to spray water mist to cover the opening 41.

[0101] The pipe 521 is connected to the top plate 43 of the box body 40, and the installation method on the top plate 43 can be through welding, bolt connection or ferrule connection, etc., to ensure that the pipe 521 can be firmly fixed on the top plate 43, and provide reliable support for the normal operation of the subsequent nozzle 522. The material of the pipe 521 is generally selected from corrosion-resistant, high-temperature-resistant and strong materials, such as stainless steel pipes, to adapt to the complex environment that the battery storage device 500 may face, including high temperature and corrosive gases generated when the battery is thermally runaway.

[0102] A plurality of nozzles 522 are connected to the pipe 521, and the distribution of the nozzles 522 should fully consider the ability to fully cover the opening 41 area of ​​the box 40 to achieve a good oxygen isolation effect. They can be evenly spaced and arranged on the pipe 521, and the arrangement method is reasonably planned according to the shape and size of the opening 41 to ensure that the water mist can cover the entire opening 41 without dead angles after being sprayed out. The connection between the nozzle 522 and the pipe 521 is usually threaded, welded, or connected by a quick connector.

[0103] When the battery device 100 in the box 40 has thermal runaway, the nozzle mechanism 52 is activated, and water is transported to each nozzle 522 through the pipe 521, and then the nozzle 522 sprays the water in the form of water mist. After the water mist is sprayed out, it will quickly form a layer of structure similar to a "water curtain" at the opening 41, and this water curtain can effectively prevent external oxygen from entering the box 40. The water mist itself is composed of many tiny water droplets. The gaps between these water droplets are relatively small, and they are constantly moving, merging and complementing each other under the action of factors such as gravity and air flow, forming a continuous medium layer that has a barrier effect on oxygen.

[0104] In addition to the function of isolating oxygen, the sprayed water mist also has a cooling effect. Thermal runaway of the battery device 100 is often accompanied by a sharp rise in temperature. When the water mist comes into contact with hot air and the high-temperature surface of the battery device 100, it will absorb heat and vaporize. This process can take away a large amount of heat, which helps to reduce the temperature inside the box 40 and alleviate the development trend of thermal runaway. Moreover, after vaporization, the water mist will increase the humidity of the air inside the box 40, and to a certain extent inhibit some chemical reactions that may be caused by high temperature.

[0105] In the above solution, when thermal runaway occurs in the battery device 100 in the box body 40 , the nozzle 522 can spray water mist, thereby isolating oxygen outside the box body 40 from entering the inside of the box body 40 .

[0106] In some embodiments, the nozzle mechanism 52 can be used in conjunction with other isolation mechanisms 50 such as the winding mechanism 51 mentioned above. For example, in the early stage of thermal runaway, the nozzle mechanism 52 first starts to spray water mist to quickly form the first line of defense for oxygen isolation and cooling; as the situation develops, the winding mechanism 51 then unfolds the winding member 512 to further strengthen the closure of the opening 41. The two complement each other and jointly improve the isolation effect of the opening 41 of the box body 40, more effectively ensuring the safety of the battery device 100 in emergency situations such as thermal runaway, and forming a more complete safety protection system.

[0107] In some embodiments, the nozzle 522 is a fan-shaped nozzle 522 .

[0108] The fan-shaped nozzle 522 can produce a flat and fan-shaped spray shape, which has a unique advantage in covering the opening 41 of the box 40. Compared with nozzles 522 of other shapes, the fan-shaped spray can achieve a larger area coverage in the horizontal or vertical direction. For example, when the opening 41 of the box 40 is rectangular, multiple fan-shaped nozzles 522 are reasonably distributed on the pipe 521, and the water mist sprayed can be effectively spread along the length and width of the opening 41 to form a fan-shaped water curtain, covering the entire opening 41 area more comprehensively, reducing the channel for oxygen to enter, and thus effectively isolating the external oxygen.

[0109] Moreover, the water mist droplets sprayed by the fan-shaped nozzle 522 are relatively evenly distributed in the spray area. The unique flow channel design inside the nozzle 522 makes the water evenly dispersed into droplets of relatively uniform size when passing through the nozzle 522, and arranged in order within the fan-shaped spray range.

[0110] The spray angle of the fan-shaped nozzle 522 can be precisely adjusted according to the specific shape, size and position of the opening 41 of the box 40 in the actual environment. An adjustable rotating joint or angle fixing device can be provided at the connection between the nozzle 522 and the pipe 521 to ensure that the spray angle of each fan-shaped nozzle 522 can reach the best, so that the water mist of multiple nozzles 522 can be seamlessly connected and fully cover the opening 41, and to a certain extent avoid the occurrence of spray blank areas caused by angle problems, which affects the oxygen isolation effect.

[0111] In the above solution, the fan-shaped nozzles 522 can cover a larger area in the horizontal or vertical direction, so that a smaller number of nozzles 522 can be used to achieve the purpose of covering the opening 41.

[0112] In some embodiments, the spray angle of the nozzle 522 is greater than or equal to 90° and less than or equal to 150°.

[0113] The spray angle refers to the vertex angle of the spray cone formed by the liquid sprayed from the nozzle 522. In simple terms, it is the degree of dispersion of the liquid sprayed from the nozzle 522, measured in angles. For example, when the spray angle is 90°, the shape formed by the liquid after dispersion is like a right-angle fan; when the spray angle is 180°, the liquid will form a semicircular spray shape.

[0114] The spray angle of the nozzle 522 can be any value between 90°C and 150°C, for example, the spray angle can be 90°C, 100°C, 110°C, 120°C, 130°C, 140°C, or 150°C.

[0115] When the spray angle is in the range of 90°C-150°C, the opening 41 of the box 40 can be well covered. For the opening 41 of the battery storage device 500, this angle range can ensure that the water mist can be distributed in the opening 41 area in a more appropriate manner to a certain extent.

[0116] In the above scheme, by limiting the range of the spray angle, effective coverage of a certain area can be achieved, which helps to balance the impact force and spray distance of the liquid.

[0117] In some embodiments, the spray angle of nozzle 522 is greater than or equal to 120°.

[0118] The spray angle of the nozzle 522 can be any value between 120°C and 150°C, for example, the spray angle can be 120°C, 125°C, 130°C, 135°C, 140°C, 150°C, or 150°C.

[0119] In the above scheme, by further limiting the range of the spray angle, a certain area can be effectively covered further, and the impact force and spray distance of the liquid can be further balanced.

[0120] In a second aspect, an embodiment of the present application further provides a battery storage system, comprising a battery storage device 500 of any of the above-mentioned embodiments.

[0121] According to some embodiments of the present application, the present application provides a battery storage device 500, which includes a box 40, an isolation mechanism 50 and a driving mechanism 60. The box 40 is used to accommodate the battery device 100. The box 40 is provided with an opening 41. The box 40 includes a top plate 43 and a bottom plate 42 arranged opposite to each other. The opening 41 is located between the bottom plate 42 and the top plate 43. The bottom plate 42 is used to support the battery device 100. The isolation mechanism 50 is arranged at a position of the top plate 43 close to the opening 41. The driving mechanism 60 is connected to the isolation mechanism 50, and the driving mechanism 60 is used to drive the isolation mechanism 50 to open to cover the opening 41. The battery storage device 500 also includes a temperature sensor 70 arranged in the box 40, and the temperature sensor 70 is connected to the driving mechanism 60 in communication.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery storage device, characterized in that: include: A box body, used to accommodate the battery device, the box body is provided with an opening, the box body comprises a top plate and a bottom plate which are arranged opposite to each other, the opening is located between the bottom plate and the top plate, and the bottom plate is used to support the battery device; An isolation mechanism is arranged at a position of the top plate close to the opening; A driving mechanism is connected to the isolating mechanism, and is used to drive the isolating mechanism to open so as to cover the opening.

2. The battery storage device according to claim 1, characterized in that: The battery storage device further includes a temperature sensor disposed in the box, and the temperature sensor is communicatively connected with the driving mechanism.

3. The battery storage device according to claim 2, characterized in that: The battery storage device further comprises an alarm mechanism disposed on the box body, and the alarm mechanism is communicatively connected with the temperature sensor.

4. The battery storage device according to claim 1, characterized in that: The isolation mechanism comprises a winding mechanism, and the winding mechanism comprises: A first fixing member includes a fixing portion and a rotating shaft rotatably connected to the fixing portion, wherein the fixing portion is connected to the top plate of the box body, the rotating shaft is connected to the driving mechanism, and the driving mechanism is used to drive the rotating shaft to rotate; A winding member is wound on the rotating shaft and is used to cover the opening.

5. The battery storage device according to claim 4, characterized in that: The winding comprises a fire resistant material.

6. The battery storage device according to claim 4, characterized in that: The isolation mechanism further comprises a weight-increasing member, and the weight-increasing member is arranged at a free end of the winding member along its own winding direction.

7. The battery storage device according to any one of claims 1 to 6, characterized in that: The isolation mechanism comprises a nozzle mechanism, which comprises a pipe and a plurality of nozzles connected to the pipe, the pipe is connected to the top plate of the box body, and the nozzles are used to spray water mist to cover the opening.

8. The battery storage device according to claim 7, characterized in that: The nozzle is a fan-shaped nozzle.

9. The battery storage device according to claim 8, characterized in that: The spray angle of the nozzle is greater than or equal to 90°C and less than or equal to 150°C.

10. The battery storage device according to claim 9, characterized in that: The spray angle of the nozzle is greater than or equal to 120°.

11. A battery storage system, characterized in that: Comprising a battery storage device according to any one of claims 1-10.

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