Case, battery, electric device, and control method

Abstract

The application provides a box, a battery, a power consumption device and a control method, and belongs to the technical field of batteries. The box comprises a box body and a spraying mechanism. The box body is internally formed with a containing space with a first opening, the containing space is used for containing battery monomers, and the box body comprises a plurality of side plates arranged along the circumference of the first opening. The spraying mechanism is located in the containing space and is installed on at least one side plate. The spraying mechanism is configured to spray atomized medium into the containing space to manage the temperature of the battery monomers. The box with this structure can on the one hand play a good thermal management role on the battery monomers contained in the containing space, thereby being beneficial to reducing the risk of hierarchical heat diffusion of the battery, improving the service life and use safety of the battery, and on the other hand can save the land occupation of the spraying mechanism, thereby effectively improving the internal space utilization rate of the box, and further being beneficial to improving the energy density of the battery, thereby improving the use performance of the battery.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a housing, a battery, an electrical device, and a control method. Background Technology

[0002] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, the power battery, as the power source, plays an irreplaceable and crucial role. A battery consists of a casing and battery modules or multiple individual cells housed within it. As a core component of new energy vehicles, the battery has high requirements in terms of both safety and lifespan. However, the individual battery cells generate a large amount of heat during continuous charging and discharging, causing a sharp rise in the battery's internal temperature. This severely affects the battery's performance and lifespan, and may even lead to significant safety hazards during use, compromising consumer safety. Summary of the Invention

[0003] This application provides a housing, a battery, an electrical device, and a control method, which can effectively reduce safety hazards during battery use.

[0004] In a first aspect, embodiments of this application provide a housing, including a housing body and a spraying mechanism; the housing body forms an accommodating space with a first opening, the accommodating space being used to accommodate a battery cell, the housing body including a plurality of side plates arranged circumferentially along the first opening; the spraying mechanism is located within the accommodating space and mounted on at least one side plate, the spraying mechanism being configured to spray an atomized medium into the accommodating space to manage the temperature of the battery cell.

[0005] In the above technical solution, by setting a spray mechanism on the side panel of the housing, the spray mechanism can spray atomized medium into the containment space to regulate the temperature of the battery cells. The housing with this structure can, on the one hand, provide better thermal management for the battery cells contained in the containment space, thereby reducing the risk of cascaded heat diffusion in the battery and improving the battery's service life and safety. On the other hand, it can save the space occupied by the spray mechanism, thereby effectively improving the utilization rate of the internal space of the housing, which in turn helps to increase the energy density of the battery and improve its performance.

[0006] In some embodiments, the spraying mechanism includes a liquid supply pipe, a gas supply pipe, and a nozzle; the liquid supply pipe is mounted on a side plate and is used to contain liquid; the gas supply pipe is mounted on a side plate and is used to contain gas; the nozzle is mounted on a side plate, and both the liquid supply pipe and the gas supply pipe are in communication with the nozzle, which is configured to mix liquid and gas to spray atomizing medium into the containing space.

[0007] In the above technical solution, the spraying mechanism is equipped with a liquid supply pipe, a gas supply pipe and a nozzle. The liquid supply pipe and the gas supply pipe respectively supply liquid and gas to the nozzle, so that the gas and liquid are mixed at the nozzle, thereby realizing the function of spraying atomized medium into the containing space.

[0008] In some embodiments, the plurality of side plates include a first side plate and a second side plate, the first side plate and the second side plate being disposed opposite to each other, and a spraying mechanism being provided on both the first side plate and the second side plate; wherein, the liquid supply pipe of the spraying mechanism on the first side plate is connected to the liquid supply pipe of the spraying mechanism on the second side plate, and the air supply pipe of the spraying mechanism on the first side plate is connected to the air supply pipe of the spraying mechanism on the second side plate.

[0009] In the above technical solution, the multiple side panels of the housing include a first side panel and a second side panel arranged opposite to each other, and both the first and second side panels are equipped with spray mechanisms. This allows for the spraying of atomized media onto both sides of the battery cells, which is beneficial for improving the thermal management of the battery cells. Furthermore, by connecting the liquid supply pipes and gas supply pipes on the first side panel to the corresponding liquid supply pipes and gas supply pipes on the second side panel, it is convenient to simultaneously supply liquid and gas to both spray mechanisms, which is beneficial for manufacturing and subsequent use.

[0010] In some embodiments, the first side plate and the second side plate are arranged opposite each other along the width direction of the housing.

[0011] In the above technical solution, by setting the first side plate and the second side plate to be arranged opposite each other along the width direction of the box, that is, both the first side plate and the second side plate extend along the length direction of the box, the two spraying mechanisms can spray atomized medium onto the side with the larger area among the multiple battery cells located in the containment space, which is beneficial to improving the thermal management capability of the battery.

[0012] In some embodiments, the side of the side plate facing the accommodating space has a receiving groove for accommodating liquid supply pipes and gas supply pipes.

[0013] In the above technical solution, by setting a receiving groove on the side of the side panel facing the receiving space, the liquid supply pipe and the gas supply pipe can be installed in the receiving groove, which helps to optimize the internal space of the box and thus effectively improves the energy density of the battery with this box.

[0014] In some embodiments, the spraying mechanism includes a plurality of nozzles; the plurality of nozzles are spaced apart along the extension direction of the side plate.

[0015] In the above technical solution, the spray mechanism is provided with multiple nozzles, and the multiple nozzles are arranged at intervals along the extension direction of the side plate, which can effectively improve the efficiency of the spray mechanism in spraying atomized medium into the accommodating space, thereby improving the efficiency of thermal management of battery cells.

[0016] In some embodiments, the housing further includes a barrier; the barrier is mounted on the side of the side panel facing the receiving space, a spray chamber is formed inside the barrier, a second opening is formed on the side of the barrier away from the side panel, and the side of the barrier with the second opening is used to abut against a battery cell; the spray mechanism is configured to spray an atomizing medium into the spray chamber.

[0017] In the above technical solution, a barrier is provided on the side panel of the housing. A spray chamber is opened on the side of the barrier away from the side panel, and a second opening is formed on the side of the barrier away from the side panel. This allows the barrier to form a sealed spray chamber with the battery cell when it comes into contact with the battery cell. This allows the spray chamber to accommodate the atomized medium sprayed by the spraying mechanism. This structure is beneficial to improving the thermal management effect of the battery cell and reduces the diffusion of the atomized medium in the accommodating space, thereby reducing the risk of the atomized medium entering the battery cell and causing damage or short circuit.

[0018] In some embodiments, the thermal conductivity of the barrier element is K, which satisfies K≥0.4w / mk.

[0019] In the above technical solution, a material with a thermal conductivity greater than or equal to 0.4w / mk is used as the material of the barrier component, which makes the barrier component have good thermal conductivity, thereby effectively improving the heat exchange capacity between the atomizing medium in the spray chamber and the interior of the box, thus helping to improve the thermal management effect of the interior of the box.

[0020] In some embodiments, a spraying mechanism is provided on two of the multiple side plates that are arranged opposite each other.

[0021] In the above technical solution, by providing a spray mechanism on two side plates that are arranged opposite to each other in multiple side plates, it is possible to spray atomized medium on both sides of the battery cell, which is beneficial to improving the thermal management effect of the battery cell.

[0022] In some embodiments, the enclosure further includes a lid; the lid closes the first opening.

[0023] In the above technical solution, the box body is also provided with a box cover, which can close the first opening of the box body so that the box cover and the box body can form a sealed space for accommodating the battery cells, thereby improving the safety of the battery with this box body.

[0024] Secondly, embodiments of this application also provide a battery, including a battery cell and the aforementioned housing; the battery cell is housed within a housing space.

[0025] Thirdly, embodiments of this application also provide an electrical device, including a gas supply mechanism, a liquid supply mechanism, and the aforementioned battery; the battery is used to provide electrical energy; the gas supply mechanism is connected to the spraying mechanism and is used to provide gas to the spraying mechanism; the liquid supply mechanism is connected to the spraying mechanism and is used to provide liquid to the spraying mechanism.

[0026] In some embodiments, the gas supply mechanism includes an air pump, a first pipeline, and a second pipeline; both the first pipeline and the second pipeline are connected between the air pump and the spray mechanism. The air pump is used to supply gas to the spray mechanism through the first pipeline, and the air pump is also used to draw back the atomizing medium in the containment space through the second pipeline.

[0027] In the above technical solution, by connecting both the first pipeline and the second pipeline between the air pump and the spray mechanism, the air pump can supply gas to the spray mechanism through the first pipeline, so as to realize the function of the spray mechanism to spray atomized medium into the housing space. In addition, the air pump can also draw back the atomized medium in the housing space through the second pipeline to reduce the risk of atomized medium remaining in the housing and causing damage to the battery cells.

[0028] In some embodiments, the gas supply mechanism further includes a first valve and a second valve; the first valve is disposed in a first pipeline and is used to open or close the first pipeline; the second valve is disposed in a second pipeline and is used to open or close the second pipeline.

[0029] In the above technical solution, by setting a first valve and a second valve on the first pipeline and the second pipeline respectively, the first valve and the second valve can open or close the first pipeline and the second pipeline respectively, thereby accurately controlling the operation of the gas supply mechanism, so as to ensure that the air pump can provide gas to the spray mechanism and draw back the atomizing medium in the receiving space.

[0030] In some embodiments, the gas supply mechanism further includes a filter element; the filter element is disposed in the second pipeline and is connected to the liquid supply mechanism, the filter element being configured to filter the liquid in the atomizing medium in the second pipeline and deliver the liquid to the liquid supply mechanism.

[0031] In the above technical solution, by installing a filter element on the second pipeline, the filter element can filter the liquid in the atomized medium flowing through the second pipeline when the air pump re-draws the atomized medium in the receiving space, and transport the liquid to the liquid supply mechanism, thereby realizing the function of liquid recovery and recycling, which helps to reduce the later use cost of the electrical device.

[0032] In some embodiments, the electrical device further includes a detection element and a control module; the detection element is disposed inside the housing and configured to detect the temperature inside the housing and generate a temperature signal; the control module is configured to control the operation of the gas supply mechanism and the liquid supply mechanism according to the temperature signal; wherein, when the temperature represented by the temperature signal is higher than a first threshold, the control module controls the gas supply mechanism to supply gas to the spray mechanism and controls the liquid supply mechanism to supply liquid to the spray mechanism, so that the spray mechanism can spray atomized medium into the containment space; when the temperature represented by the temperature signal is lower than a second threshold, the control module controls the liquid supply mechanism to stop and controls the gas supply mechanism to retract the atomized medium in the containment space.

[0033] In the above technical solution, the temperature inside the battery box can be detected by the detection component, and the operation of the gas supply mechanism and liquid supply mechanism can be controlled by the control module to realize the function of spraying atomized medium into the box or recovering atomized medium in the box. This structure can accurately control the operation of the spray mechanism to ensure the safety of battery use.

[0034] Fourthly, this application also provides a control method applicable to the aforementioned electrical device. The control method includes: acquiring the internal temperature of the battery; controlling the operation of a gas supply mechanism and a liquid supply mechanism based on the temperature; when the temperature is higher than a first threshold, controlling the gas supply mechanism to supply gas to the spray mechanism and controlling the liquid supply mechanism to supply liquid to the spray mechanism, so that the spray mechanism can spray atomized medium into the receiving space; when the temperature is lower than a second threshold, controlling the liquid supply mechanism to stop and controlling the gas supply mechanism to retract the atomized medium from the receiving space. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0037] Figure 2 Exploded views of the battery structure provided in some embodiments of this application;

[0038] Figure 3 This is a schematic diagram of the structure of a battery module provided in some embodiments of this application;

[0039] Figure 4 This is a partial structural diagram of a battery provided in some embodiments of this application;

[0040] Figure 5 This is a schematic diagram showing the connection between the spray mechanism and the side plate provided in some embodiments of this application;

[0041] Figure 6 for Figure 5 A partial enlarged view of the spray mechanism connected to point A on the side plate;

[0042] Figure 7 This is a schematic diagram of the structure of the spraying mechanism provided in some embodiments of this application;

[0043] Figure 8 This is a schematic diagram of the system structure of a vehicle provided in some embodiments of this application.

[0044] Icons: 1000 - Vehicle; 100 - Battery; 10 - Housing; 11 - Housing Body; 111 - Storage Space; 112 - First Opening; 113 - Side Panel; 1131 - First Side Panel; 1132 - Second Side Panel; 1133 - Storage Slot; 114 - Bottom Plate; 12 - Housing Cover; 13 - Spray Mechanism; 131 - Liquid Supply Pipe; 1311 - Liquid Inlet; 132 - Air Supply Pipe; 1321 - Air Inlet; 133 - Nozzle; 14 - Barrier Component; 141 - Spray Chamber; 142 - Second opening; 20-Battery module; 21-Battery cell; 22-Buffer unit; 200-Controller; 300-Motor; 400-Air supply mechanism; 410-Air pump; 420-First pipeline; 430-Second pipeline; 440-First valve; 450-Second valve; 460-Filter element; 500-Liquid supply mechanism; 510-Coolant tank; 520-Third pipeline; 530-Boost pump; 540-Third valve; X-Length direction of the housing; Y-Width direction of the housing. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0047] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0050] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0051] In this application, "multiple" means two or more (including two).

[0052] In this application, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to these. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to these. Battery cells are generally divided into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and the embodiments of this application are not limited to these.

[0053] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or a battery pack. A battery generally includes a housing for encapsulating one or more battery cells or multiple battery modules. The housing can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0054] A single battery cell includes a casing, electrode assembly, and electrolyte. The casing houses the electrode assembly and electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, while the uncoated positive current collector protrudes beyond the coated one, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the negative current collector without the negative active material layer protrudes from the one with the negative active material layer. The negative current collector without the negative active material layer serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0055] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0056] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, the power battery, as the power source, plays an irreplaceable and crucial role. A battery consists of a casing and multiple individual battery cells housed within it. As a core component of new energy vehicles, the battery faces high requirements in terms of safety, cycle life, and performance.

[0057] The inventors discovered that in typical power batteries, multiple individual battery cells are usually housed within the battery casing to provide sufficient power. However, in this type of battery, the individual cells generate a significant amount of heat during continuous charging and discharging, causing the internal temperature of the battery to rise. This severely impacts the battery's performance and lifespan, and may even pose significant safety hazards during use, compromising consumer safety. Therefore, existing technologies typically incorporate a spray system inside the battery to cool the individual cells. This is achieved by laying spray pipes at one end of the individual cell, where a pressure relief mechanism is located. These spray pipes facilitate the flow of fire-fighting fluid and, when heated, can form openings. A gas storage device is connected to the spray pipes, allowing compressed gas in the storage device to drive the fire-fighting fluid in the spray pipes under pressure, thereby cooling the individual battery cells. However, this type of sprinkler system occupies a large amount of internal space in the battery, which is not conducive to improving the battery's energy density. On the other hand, it is very easy for fire-fighting fluid to enter the battery cells, which may lead to battery damage or short circuit and fire, thus posing a significant safety hazard during battery use and endangering consumer safety.

[0058] Based on the above considerations, and to address the significant safety hazards posed by batteries during use, which are detrimental to consumer safety, the inventors, after in-depth research, designed a housing comprising a housing body and a spray mechanism. The housing body has an internal accommodating space with a first opening for accommodating individual battery cells. The housing body includes multiple side plates arranged circumferentially along the first opening. The spray mechanism is located within the accommodating space and mounted on at least one side plate. The spray mechanism is configured to spray an atomized medium into the accommodating space to manage the temperature of the individual battery cells.

[0059] In this type of housing, a spray mechanism is installed on the side panel of the housing. This mechanism sprays atomized medium into the containment space to regulate the temperature of the battery cells. This housing structure provides better thermal management for the battery cells within the containment space, thereby reducing the risk of cascaded heat diffusion and mitigating the phenomenon of atomized medium entering the battery cells from the top. This effectively improves battery life and safety. On the other hand, it saves space occupied by the spray mechanism, thus improving the utilization rate of the internal space of the housing and consequently increasing the energy density of the battery, thereby enhancing its performance.

[0060] The enclosure disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system for such an electrical device can be constructed using the enclosure and batteries disclosed in this application. This facilitates better thermal management of individual battery cells and saves internal space in the enclosure, thereby improving battery safety and performance.

[0061] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0062] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0063] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 100 is disposed inside the vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000; for example, the battery 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0064] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0065] Please refer to Figure 2 and Figure 3 , Figure 2 This is an exploded view of the structure of the battery 100 provided in some embodiments of this application. Figure 3 This is a schematic diagram of the structure of a battery module 20 provided in some embodiments of this application. The battery 100 includes a housing 10 and a battery module 20. The housing 10 has an assembly space for accommodating the battery module 20. The housing 10 can adopt various structures. In some embodiments, the housing 10 may include a housing body 11 and a housing cover 12, which cover each other, jointly defining the assembly space for accommodating the battery module 20. The housing body 11 can be a hollow structure open at one end, and the housing cover 12 can be a plate-like structure, covering the open side of the housing body 11 so that the housing body 11 and the housing cover 12 jointly define the assembly space. Of course, in other embodiments, the housing body 11 and the housing cover 12 can both be hollow structures open at one side, with the open side of the housing cover 12 covering the open side of the housing body 11. Optionally, the housing 10 formed by the housing body 11 and the housing cover 12 can be of various shapes, such as a cylinder, a cuboid, etc. For example, in Figure 2 In the middle, box 10 has a rectangular structure.

[0066] In battery 100, there can be one or more battery modules 20. For example, in... Figure 2 In the battery 100, there are multiple battery modules 20. The multiple battery modules 20 can be connected in series, in parallel, or in a mixed manner. A mixed connection means that the multiple battery modules 20 are connected in both series and parallel. The multiple battery modules 20 can be directly connected in series, in parallel, or in a mixed manner, and then the whole assembly of the multiple battery modules 20 is housed in the housing 10.

[0067] It should be noted that the battery module 20 is composed of multiple battery cells 21, which can be connected in series, in parallel, or in a mixed manner. A mixed connection means that some of the battery cells 21 are connected in series and others in parallel. The battery module 20 may also include other structures. For example, the battery module 20 may also include a busbar 22 (copper or aluminum, etc.) for realizing the electrical connection between the multiple battery cells 21.

[0068] Each battery cell 21 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 21 can be cylindrical, flat, cuboid, or other shapes. For example, in... Figure 3 In the middle, the shape of the battery cell 21 is a cuboid.

[0069] According to some embodiments of this application, refer to Figure 2 and Figure 3 Please refer to further details. Figure 4 and Figure 5 , Figure 4 This is a partial structural schematic diagram of the battery 100 provided in some embodiments of this application. Figure 5 This is a schematic diagram showing the connection between the spray mechanism 13 and the side plate 113 provided in some embodiments of this application. This application provides a housing 10, which includes a housing body 11 and a spray mechanism 13. The housing body 11 has an internal receiving space 111 with a first opening 112 for receiving a battery cell 21. The housing body 11 includes a plurality of side plates 113 arranged circumferentially along the first opening 112. The spray mechanism 13 is located within the receiving space 111 and mounted on at least one side plate 113. The spray mechanism 13 is configured to spray an atomized medium into the receiving space 111 to manage the temperature of the battery cell 21.

[0070] The spray mechanism 13 is installed on at least one side plate 113, that is, at least one side plate 113 is equipped with a spray mechanism 13 for spraying atomized medium into the accommodating space 111. Alternatively, spray mechanisms 13 may be installed on one side plate 113 or multiple side plates 113.

[0071] The spray mechanism 13 is configured to spray an atomized medium into the receiving space 111, that is, the spray mechanism 13 can provide an atomized medium into the receiving space 111 to perform thermal management for the battery cell 21. For example, the atomized medium can be atomized coolant, methanol, or water, etc.

[0072] Optionally, the housing 10 further includes a base plate 114, which supports the battery module 20 and is arranged opposite to the housing cover 12. Along the thickness direction of the base plate 114, one end of a plurality of side plates 113 is mounted on one side of the base plate 114, and the other end forms a first opening 112. The base plate 114 and the plurality of side plates 113 together define a receiving space 111 for accommodating the battery cell 21. The battery cell 21 of the battery module 20 has a pressure relief mechanism on the side facing the housing cover 12. The pressure relief mechanism is used to release the internal pressure of the battery cell 21 when the internal pressure or temperature reaches a predetermined value. Exemplarily, the pressure relief mechanism may be a component such as an explosion-proof valve, an explosion-proof disc, a gas valve, a pressure relief valve, or a safety valve.

[0073] It should be noted that multiple side plates 113 are connected to one side of the bottom plate 114, and the multiple side plates 113 enclose an accommodation space 111 for accommodating the battery cells 21. The accommodation space 111 formed by enclosing the multiple side plates 113 can be one or multiple. In Figure 2 four side plates 113 enclose an accommodation space 111. Of course, in other embodiments, the multiple side plates 113 can also enclose each other to form structures such as "day" and "field" characters to form multiple accommodation spaces 111 for accommodating the battery cells 21, and each accommodation space 111 has a first opening 112. This application does not limit this here.

[0074] By arranging a spraying mechanism 13 on the side plate 113 of the box body 10, the spraying mechanism 13 can spray an atomized medium into the accommodation space 111 to regulate the temperature of the battery cells 21. On the one hand, the box body 10 with this structure can play a better role in thermal management of the battery cells 21 accommodated in the accommodation space 111, which is conducive to reducing the risk of hierarchical thermal diffusion of the battery 100, thereby improving the service life and safety of the battery 100. On the other hand, it can save the floor space of the spraying mechanism 13, effectively improve the utilization rate of the internal space of the box body 10, and further improve the energy density of the battery 100 to improve the performance of the battery 100.

[0075] According to some embodiments of the present application, refer to Figure 5 , and please further refer to Figure 6 and Figure 7 . Figure 6 is Figure 5 a partial enlarged view of the spraying mechanism 13 connected to the A position of the side plate 113 shown in the figure. Figure 7 is a schematic structural diagram of the spraying mechanism 13 provided by some embodiments of the present application. The spraying mechanism 13 includes a liquid supply pipeline 131, a gas supply pipeline 132, and a nozzle 133. The liquid supply pipeline 131 is installed on the side plate 113, and the liquid supply pipeline 131 is used to accommodate liquid. The gas supply pipeline 132 is installed on the side plate 113, and the gas supply pipeline 132 is used to accommodate gas. The nozzle 133 is installed on the side plate 113, and both the liquid supply pipeline 131 and the gas supply pipeline 132 are connected to the nozzle 133. The nozzle 133 is configured to mix liquid and gas to spray an atomized medium into the accommodation space 111.

[0076] Both the liquid supply pipe 131 and the gas supply pipe 132 are arranged along the extension direction of the side plate 113 and installed on the side of the side plate 113 facing the accommodating space 111. The liquid supply pipe 131 has a liquid inlet 1311 for liquid to enter, and the gas supply pipe 132 has a gas inlet 1321 for gas to enter. For example, the liquid can be coolant, methanol, or water, and the gas can be air or nitrogen. For example, the materials of the liquid supply pipe 131 and the gas supply pipe 132 can be stainless steel, aluminum, or plastic.

[0077] The nozzle 133 has a mixing chamber inside, and is also provided with a liquid supply port, a gas supply port, and a spray port communicating with the mixing chamber. The liquid supply port is connected to the liquid supply pipe 131, and the gas supply port is connected to the gas supply pipe 132, so that the liquid provided by the liquid supply pipe 131 and the gas provided by the gas supply pipe 132 can enter the mixing chamber of the nozzle 133 for mixing, and then be sprayed out through the spray port to spray the atomized medium into the receiving chamber. The specific structure of the nozzle 133 can be found in related technologies, and will not be described in detail here.

[0078] The spray mechanism 13 is provided with a liquid supply pipe 131, a gas supply pipe 132 and a nozzle 133. Liquid and gas are supplied to the nozzle 133 through the liquid supply pipe 131 and the gas supply pipe 132 respectively, so that the gas and liquid are mixed at the nozzle 133, thereby realizing the function of spraying atomized medium into the accommodating space 111.

[0079] According to some embodiments of this application, see Figure 4 , Figure 5 and Figure 6 As shown, the multiple side plates 113 include a first side plate 1131 and a second side plate 1132, with the first side plate 1131 and the second side plate 1132 arranged opposite to each other. A spray mechanism 13 is provided on both the first side plate 1131 and the second side plate 1132. The liquid supply pipe 131 of the spray mechanism 13 on the first side plate 1131 is connected to the liquid supply pipe 131 of the spray mechanism 13 on the second side plate 1132, and the air supply pipe 132 of the spray mechanism 13 on the first side plate 1131 is connected to the air supply pipe 132 of the spray mechanism 13 on the second side plate 1132.

[0080] The multiple side plates 113 include a first side plate 1131 and a second side plate 1132. The first side plate 1131 and the second side plate 1132 are arranged opposite to each other. That is, spraying mechanisms 13 are provided on two side plates 113 arranged opposite to each other among the multiple side plates 113 surrounding the accommodating space 111. For ease of description, the two side plates 113 are respectively defined as the first side plate 1131 and the second side plate 1132.

[0081] The liquid supply pipe 131 of the spray mechanism 13 on the first side plate 1131 is connected to the liquid supply pipe 131 of the spray mechanism 13 on the second side plate 1132. The air supply pipe 132 of the spray mechanism 13 on the first side plate 1131 is connected to the air supply pipe 132 of the spray mechanism 13 on the second side plate 1132. That is, the liquid supply pipe 131 and air supply pipe 132 of the two spray mechanisms 13 on the two side plates 113 are connected to each other. In other words, the liquid supply pipes 131 of the two spray mechanisms 13 are connected to each other and share a liquid inlet 1311, and the air supply pipes 132 of the two spray mechanisms 13 are connected to each other and share a single air inlet 1321.

[0082] The housing 10 has multiple side panels 113, including a first side panel 1131 and a second side panel 1132 arranged opposite to each other. Both the first side panel 1131 and the second side panel 1132 are equipped with spray mechanisms 13, enabling the spraying of atomized media onto both sides of the battery cell 21, thus improving the thermal management effect of the battery cell 21. Furthermore, by connecting the liquid supply pipe 131 and the gas supply pipe 132 on the first side panel 1131 to the corresponding liquid supply pipe 131 and gas supply pipe 132 on the second side panel 1132, it is convenient to simultaneously supply liquid and gas to both spray mechanisms 13, which is beneficial for manufacturing and subsequent use.

[0083] In some embodiments, please continue to see Figure 4 , Figure 5 and Figure 6 As shown, the first side plate 1131 and the second side plate 1132 are arranged opposite each other along the width direction Y of the box.

[0084] The first side plate 1131 and the second side plate 1132 are arranged opposite each other along the width direction Y of the box. That is, two side plates 113 arranged opposite each other and each equipped with a spray mechanism 13 are arranged along the width direction Y of the box. In other words, the side plate 113 equipped with the spray mechanism 13 extends along the length direction X of the box, thereby increasing the contact area between the atomized medium sprayed by the spray mechanism 13 and the multiple battery cells 21.

[0085] By setting the first side plate 1131 and the second side plate 1132 to be arranged opposite each other along the width direction Y of the housing, that is, the first side plate 1131 and the second side plate 1132 both extend along the length direction X of the housing, the two spraying mechanisms 13 can spray atomized medium onto the side with the larger area of ​​the multiple battery cells 21 located in the accommodating space 111, which is beneficial to improving the thermal management capability of the battery 100.

[0086] According to some embodiments of this application, please refer to Figure 6As shown, the side plate 113 facing the receiving space 111 has a receiving groove 1133 for receiving the liquid supply pipe 131 and the air supply pipe 132. That is, the receiving groove 1133 is provided on the side of the side plate 113 for installing the spray mechanism 13, so that the liquid supply pipe 131 and the air supply pipe 132 of the spray mechanism 13 can be installed in the receiving groove 1133.

[0087] By providing a receiving groove 1133 on the side of the side plate 113 facing the receiving space 111, the liquid supply pipe 131 and the gas supply pipe 132 can be installed in the receiving groove 1133, which helps to optimize the internal space of the housing 10 and thus effectively improves the energy density of the battery 100 with such a housing 10.

[0088] According to some embodiments of this application, see Figure 5 and Figure 7 As shown, the spraying mechanism 13 includes a plurality of nozzles 133, which are spaced apart along the extending direction of the side plate 113.

[0089] For example, the spray mechanism 13 is provided with five nozzles 133, which are arranged at intervals along the extension direction of the side plate 113, that is, at intervals along the length direction X of the housing. Each nozzle 133 is connected to a liquid supply pipe 131 and an air supply pipe 132, so as to enable the five nozzles 133 to simultaneously spray atomized medium into the accommodating space 111. Of course, in other embodiments, the number of nozzles 133 may also be two, three, four or six, etc.

[0090] The spray mechanism 13 is provided with multiple nozzles 133, and the multiple nozzles 133 are arranged at intervals along the extension direction of the side plate 113, thereby effectively improving the efficiency of the spray mechanism 13 in spraying atomized medium into the accommodating space 111, which in turn helps to improve the efficiency of thermal management of the battery cell 21.

[0091] According to some embodiments of this application, please refer to Figure 5 and Figure 6 As shown, the housing 10 also includes a barrier 14. The barrier 14 is mounted on the side of the side panel 113 facing the receiving space 111. A spray chamber 141 is formed inside the barrier 14. A second opening 142 is formed on the side of the barrier 14 away from the side panel 113. The side of the barrier 14 with the second opening 142 is used to abut against the battery cell 21. The spray mechanism 13 is configured to spray an atomized medium into the spray chamber 141.

[0092] The barrier 14 has a spray chamber 141 inside. The spray chamber 141 has a second opening 142 on the side of the barrier 14 away from the side plate 113. That is, the spray chamber 141 penetrates the barrier 14 and faces the battery cell 21. The second opening 142 is formed on the side of the barrier 14 facing the battery cell 21, so that when the side of the barrier 14 with the second opening 142 abuts against the side of the multiple battery cells 21, a sealed spray chamber 141 can be formed. In other words, one side of the battery module 20 is used to cover the second opening 142 of the barrier 14.

[0093] The spray mechanism 13 is configured to spray atomized medium into the spray chamber 141, that is, the nozzle 133 of the spray mechanism 13 extends into the spray chamber 141, so that the nozzle 133 can spray atomized medium into the spray chamber 141. In other words, the barrier 14 is provided with a mounting hole for the nozzle 133 to pass through, so that the nozzle 133 can extend into the spray chamber 141 through the mounting hole.

[0094] By providing a barrier 14 on the side plate 113 of the housing 10, a spray chamber 141 is provided on the side of the barrier 14 away from the side plate 113, and a second opening 142 is formed on the side of the barrier 14 away from the side plate 113, so that when the barrier 14 comes into contact with the battery cell 21, it can form a sealed spray chamber 141 with the battery cell 21, thereby enabling the spray chamber 141 to accommodate the atomized medium sprayed by the spray mechanism 13. This structure is beneficial to improving the thermal management effect of the battery cell 21 on the one hand, and on the other hand, it can reduce the diffusion of the atomized medium in the accommodating space 111, so as to reduce the risk of the atomized medium entering the battery cell 21 and causing damage or short circuit to the battery cell 21.

[0095] According to some embodiments of this application, the thermal conductivity of the barrier 14 is K, which satisfies K≥0.4w / mk.

[0096] The thermal conductivity of the barrier 14 is greater than or equal to 0.4 W / mK, meaning that the barrier 14 is made of a thermally conductive material. For example, the barrier 14 can be made of aluminum-plastic composite, silicone, or silicone grease.

[0097] The material of the barrier 14 is made of a material with a thermal conductivity greater than or equal to 0.4w / mk, which gives the barrier 14 good thermal conductivity. This can effectively improve the heat exchange capacity between the atomizing medium in the spray chamber 141 and the interior of the box 10, thereby improving the thermal management effect of the interior of the box 10.

[0098] According to some embodiments of this application, see Figure 4 and Figure 5As shown, spraying mechanisms 13 are provided on two of the multiple side plates 113 that are arranged opposite to each other.

[0099] In the above description, spray mechanisms 13 are provided on two oppositely arranged side plates 113 among the plurality of side plates 113. That is, spray mechanisms 13 are provided on two oppositely arranged side plates 113 among the plurality of side plates 113 surrounding the accommodating space 111. For example, in Figure 5 In the middle, the accommodating space 111 formed by multiple side plates 113 is in the shape of a cuboid. It can be that the spray mechanism 13 is set only on two opposite side plates 113, or the spray mechanism 13 is set on all four side plates 113, that is, the spray mechanism 13 is set on both pairs of oppositely arranged side plates 113.

[0100] By providing a spray mechanism 13 on each of the two side plates 113 arranged opposite to each other in the multiple side plates 113, it is possible to spray atomized medium on both sides of the battery cell 21, which is beneficial to improving the thermal management effect of the battery cell 21.

[0101] According to some embodiments of this application, see Figure 2 As shown, the box body 10 also includes a box cover 12, which closes the first opening 112. That is, the cover fits onto the side of the box body 11 where the first opening 112 is formed, thereby closing the first opening 112.

[0102] The housing 10 is also provided with a cover 12, which can close the first opening 112 of the housing body 11 so that the cover 12 and the housing body 11 can form a sealed space for accommodating the battery cell 21, thereby improving the safety of the battery 100 with this housing 10.

[0103] According to some embodiments of this application, this application also provides a battery 100, which includes a battery cell 21 and a housing 10 of any of the above schemes, wherein the battery cell 21 is accommodated in the accommodating space 111 of the housing 10.

[0104] According to some embodiments of this application, this application also provides an electrical device, which includes a battery 100 of any of the above schemes, and the battery 100 is used to provide electrical energy to the electrical device.

[0105] The electrical device can be any of the aforementioned devices or systems that use battery 100.

[0106] Taking vehicle 1000 as an example, the electrical equipment refers to... Figure 8 As shown, Figure 8This is a schematic diagram of the system structure of a vehicle 1000 provided in some embodiments of this application. In some embodiments, the vehicle 1000 further includes an air supply mechanism 400 and a liquid supply mechanism 500. The air supply mechanism 400 is connected to the spray mechanism 13 and is used to supply gas to the spray mechanism 13. The liquid supply mechanism 500 is connected to the spray mechanism 13 and is used to supply liquid to the spray mechanism 13, thereby enabling the spray mechanism 13 to spray atomized medium into the interior of the housing 10.

[0107] For example, the liquid supply mechanism 500 may be a coolant supply device on the vehicle 1000 for providing liquid.

[0108] Optionally, the liquid supply mechanism 500 includes a coolant tank 510, a third pipeline 520, a booster pump 530, and a third valve 540. The coolant tank 510 is a container on the vehicle 1000 for holding coolant. The third pipeline 520 connects the coolant tank 510 and the liquid supply pipe 131 of the spray mechanism 13, so that the coolant tank 510 can supply liquid to the liquid supply mechanism 500. The booster pump 530 is disposed on the third pipeline 520 to pressurize the liquid in the third pipeline 520 to pump the liquid to the liquid supply pipe 131. The third valve 540 is disposed on the third pipeline 520 to open or close the third pipeline 520. For example, the booster pump 530 can be a centrifugal pump, a pipeline pump, or a self-priming pump, etc., and the third valve 540 can be a solenoid valve, a ball valve, a butterfly valve, a gate valve, or a stop valve, etc.

[0109] According to some embodiments of this application, please continue to refer to Figure 8 As shown, the air supply mechanism 400 includes an air pump 410, a first pipeline 420, and a second pipeline 430. Both the first pipeline 420 and the second pipeline 430 are connected between the air pump 410 and the spray mechanism 13. The air pump 410 is used to supply gas to the spray mechanism 13 through the first pipeline 420, and the air pump 410 is also used to draw back the atomizing medium in the receiving space 111 through the second pipeline 430.

[0110] One end of the first pipe 420 and the second pipe 430 are connected to the air supply pipe 132 of the spraying mechanism 13, and the other end is connected to the air pump 410.

[0111] The air pump 410 is used to supply gas to the spray mechanism 13 through the first pipe 420. The air pump 410 is also used to draw back the atomized medium in the receiving space 111 through the second pipe 430. That is, when the air pump 410 rotates forward, it can supply gas to the air supply pipe 132 through the first pipe 420. Conversely, when the air pump 410 rotates in reverse, it can draw back the atomized medium in the receiving space 111 of the box 10 through the second pipe 430, so that the atomized medium can be discharged to the outside of the box 10 after passing through the nozzle 133, the air supply pipe 132, the second pipe 430 and the air pump 410 in sequence.

[0112] By connecting both the first pipe 420 and the second pipe 430 between the air pump 410 and the spray mechanism 13, the air pump 410 can supply gas to the spray mechanism 13 through the first pipe 420, so that the spray mechanism 13 can spray atomized medium into the housing space 111 of the housing 10. In addition, the air pump 410 can also draw back the atomized medium in the housing space 111 through the second pipe 430 to reduce the risk of atomized medium remaining in the housing 10 and causing damage to the battery cell 21.

[0113] According to some embodiments of this application, please continue to refer to Figure 8 As shown, the gas supply mechanism 400 also includes a first valve 440 and a second valve 450. The first valve 440 is disposed in the first pipeline 420 and is used to open or close the first pipeline 420. The second valve 450 is disposed in the second pipeline 430 and is used to open or close the second pipeline 430.

[0114] The first valve 440 and the second valve 450 are respectively installed on the first pipeline 420 and the second pipeline 430 to open and close the first pipeline 420 and the second pipeline 430. When the first valve 440 is open and the second valve 450 is closed, the air pump 410 is connected to the air supply pipeline 132 only through the first pipeline 420 to supply gas to the air supply pipeline 132. When the first valve 440 is closed and the second valve 450 is open, the air pump 410 is connected to the air supply pipeline 132 only through the second pipeline 430 to re-draw the atomized medium in the accommodating space 111 of the housing 10. It should be noted that when the air pump 410 supplies gas to the air supply pipe 132, the third valve 540 of the liquid supply mechanism 500 is in the open state, so that the liquid supply mechanism 500 simultaneously supplies liquid to the liquid supply pipe 131, thereby enabling the spray mechanism 13 to spray atomized medium into the receiving space 111 of the housing 10. When the air pump 410 retracts the atomized medium in the receiving space 111 of the housing 10, the third valve 540 of the liquid supply mechanism 500 is in the closed state, so that the liquid supply mechanism 500 stops supplying liquid to the liquid supply pipe 131.

[0115] For example, the first valve 440 and the second valve 450 can be a solenoid valve, ball valve, butterfly valve, gate valve or globe valve, etc.

[0116] By providing a first valve 440 and a second valve 450 on the first pipeline 420 and the second pipeline 430 respectively, the first valve 440 and the second valve 450 can open or close the first pipeline 420 and the second pipeline 430 respectively, thereby precisely controlling the operation of the gas supply mechanism 400, so as to ensure that the air pump 410 can provide gas to the spray mechanism 13 and draw back the atomizing medium in the receiving space 111.

[0117] According to some embodiments of this application, please continue to refer to Figure 8 As shown, the gas supply mechanism 400 also includes a filter element 460. The filter element 460 is disposed in the second pipeline 430 and is connected to the liquid supply mechanism 500. The filter element 460 is configured to filter the liquid in the atomizing medium in the second pipeline 430 and deliver the liquid to the liquid supply mechanism 500.

[0118] The filter element 460 is disposed on the second pipeline 430 and is connected to the coolant tank 510 of the liquid supply mechanism 500, so that the filter element 460 can filter the liquid in the atomizing medium flowing through the second pipeline 430 and transport the liquid to the coolant tank 510 of the liquid supply mechanism 500 for recycling.

[0119] For example, the filter element 460 can be filter cotton or filter screen, etc. The specific structure of the filter element 460 can be found in related technologies, and will not be described in detail here.

[0120] By installing a filter element 460 on the second pipeline 430, the filter element 460 can filter the liquid in the atomized medium flowing through the second pipeline 430 when the air pump 410 re-draws the atomized medium in the receiving space 111, and deliver the liquid to the liquid supply mechanism 500, thereby realizing the function of liquid recovery and recycling, which helps to reduce the later use cost of the electrical device.

[0121] According to some embodiments of this application, the electrical device further includes a detection element and a control module. The detection element is disposed within the housing 10 and is configured to detect the temperature within the housing 10 and generate a temperature signal. The control module is configured to control the operation of the gas supply mechanism 400 and the liquid supply mechanism 500 based on the temperature signal. Specifically, when the temperature represented by the temperature signal is higher than a first threshold, the control module controls the gas supply mechanism 400 to supply gas to the spray mechanism 13 and controls the liquid supply mechanism 500 to supply liquid to the spray mechanism 13, enabling the spray mechanism 13 to spray atomized medium into the receiving space 111. When the temperature represented by the temperature signal is lower than a second threshold, the control module controls the liquid supply mechanism 500 to stop and controls the gas supply mechanism 400 to retract the atomized medium from the receiving space 111.

[0122] Please see Figure 8 When the temperature signal indicates a temperature higher than a first threshold, the control module controls the gas supply mechanism 400 to supply gas to the spray mechanism 13 and the liquid supply mechanism 500 to supply liquid to the spray mechanism 13. In other words, when the detector detects that the temperature inside the housing 10 is higher than the first threshold, the control module can control the first valve 440 and the third valve 540 to open and the second valve 450 to close, while simultaneously controlling the air pump 410 to rotate forward and the booster pump 530 to start. This allows the gas supply mechanism 400 and the liquid supply mechanism 500 to supply gas and liquid to the gas supply pipe 132 and the liquid supply pipe 131 of the spray mechanism 13, respectively, thereby enabling the nozzle 133 of the spray mechanism 13 to supply liquid to the container. Atomized medium is sprayed into the housing 111 to cool the battery cells 21. When the temperature indicated by the temperature signal is lower than a second threshold, the control module controls the liquid supply mechanism 500 to stop and the air supply mechanism 400 to retract the atomized medium in the housing 111. That is, when the detector detects that the temperature inside the housing 10 is lower than the second threshold, i.e., the temperature inside the housing 10 drops, the control module can control the first valve 440 and the third valve 540 to close and the second valve 450 to open, and simultaneously control the air pump 410 to reverse and control the booster pump 530 to stop, so that the air supply mechanism 400 can retract the atomized medium in the housing 111 through the air supply pipe 132. The specific structure of the control module can be found in related technologies and will not be described in detail here.

[0123] For example, the first threshold is 37°C and the second threshold is 30°C.

[0124] For example, the detection device can be a thermocouple sensor, a thermistor sensor, or a resistance temperature detector, etc.

[0125] The temperature inside the housing 10 of the battery 100 can be detected by the detection device, and the operation of the air supply mechanism 400 and the liquid supply mechanism 500 can be controlled by the control module to achieve the function of spraying atomized medium into the housing space 111 of the housing 10 or recovering the atomized medium in the housing space 111. This structure can accurately control the operation of the spray mechanism 13 to ensure the safety of the battery 100.

[0126] According to some embodiments of this application, this application also provides a control method applicable to the above-mentioned electrical device, the control method comprising:

[0127] S100: Obtains the internal temperature of battery 100;

[0128] S200: The gas supply mechanism 400 and the liquid supply mechanism 500 are controlled to operate according to the temperature. When the temperature is higher than the first threshold, the gas supply mechanism 400 is controlled to supply gas to the spray mechanism 13, and the liquid supply mechanism 500 is controlled to supply liquid to the spray mechanism 13, so that the spray mechanism 13 can spray atomized medium into the receiving space 111. When the temperature is lower than the second threshold, the liquid supply mechanism 500 is controlled to stop, and the gas supply mechanism 400 is controlled to retract the atomized medium in the receiving space 111.

[0129] In the above control method, the internal temperature of the battery 100 can be obtained through the detection device, and the operation of the gas supply mechanism 400 and the liquid supply mechanism 500 can be controlled through the control module.

[0130] For example, the first threshold is 37°C and the second threshold is 30°C.

[0131] It should be noted that the relevant structures of the detection element, control module, air supply mechanism 400, liquid supply mechanism 500 and spray mechanism 13 used in the control methods provided in the above embodiments can be found in the detection element, control module, air supply mechanism 400, liquid supply mechanism 500 and spray mechanism 13 provided in the foregoing embodiments, and will not be repeated here.

[0132] According to some embodiments of this application, see Figures 2 to 7As shown, this application provides a housing 10, which includes a housing body 11, a housing cover 12, and a spray mechanism 13. The housing body 11 has an internal receiving space 111 with a first opening 112 for accommodating a battery cell 21. The housing body 11 includes a plurality of side plates 113 arranged circumferentially along the first opening 112, and each side plate 113 has a receiving groove 1133 on its side facing the receiving space 111. The housing cover 12 closes to the first opening 112. The spray mechanism 13 is located within the receiving space 111 and mounted on two opposing side plates 113. The spray mechanism 13 is configured to spray an atomized medium into the receiving space 111 to manage the temperature of the battery cell 21. The spraying mechanism 13 includes a liquid supply pipe 131, an air supply pipe 132, and a plurality of nozzles 133. The liquid supply pipe 131 and the air supply pipe 132 are both installed in the receiving groove 1133 of the side wall and extend along the extending direction of the side plate 113. The liquid supply pipe 131 is used to receive liquid, and the air supply pipe 132 is used to receive gas. The plurality of nozzles 133 are spaced apart along the extending direction of the side plate 113. The liquid supply pipe 131 and the air supply pipe 132 are both connected to the nozzles 133. The nozzles 133 are configured to mix liquid and gas to spray atomized medium into the receiving space 111. The housing 10 also includes a barrier 14 made of a thermally conductive material. The barrier 14 is installed on the side of the side plate 113 facing the receiving space 111. A spray chamber 141 is formed inside the barrier 14. A second opening 142 is formed on the side of the barrier 14 away from the side plate 113. The side of the barrier 14 with the second opening 142 is used to abut against the battery cell 21. The nozzle 133 extends into the spray chamber 141.

[0133] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0134] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A housing, characterized in that, include: The box body has an interior forming a receiving space with a first opening for receiving a single battery cell, and the box body includes a plurality of side plates arranged circumferentially along the first opening. as well as A spray mechanism, located within the receiving space and mounted on at least one of the side plates, is configured to spray an atomized medium into the receiving space to manage the temperature of the battery cells; The housing also includes a barrier, which is installed on the side of the side panel facing the receiving space. A spray chamber is formed inside the barrier, and a second opening is formed on the side of the barrier away from the side panel. The side of the barrier with the second opening is used to abut against the battery cell. The spray mechanism is configured to spray the atomizing medium into the spray chamber.

2. The housing according to claim 1, characterized in that, The spraying mechanism includes: A liquid supply pipe is installed on the side plate, and the liquid supply pipe is used to contain liquid; A gas supply pipe is installed on the side plate, and the gas supply pipe is used to contain gas. A nozzle is mounted on the side plate, and both the liquid supply pipe and the gas supply pipe are connected to the nozzle. The nozzle is configured to mix the liquid and the gas to spray the atomizing medium into the containment space.

3. The housing according to claim 2, characterized in that, The plurality of side plates includes a first side plate and a second side plate, the first side plate and the second side plate are disposed opposite to each other, and the spraying mechanism is provided on both the first side plate and the second side plate; The liquid supply pipe of the spray mechanism on the first side plate is connected to the liquid supply pipe of the spray mechanism on the second side plate, and the air supply pipe of the spray mechanism on the first side plate is connected to the air supply pipe of the spray mechanism on the second side plate.

4. The housing according to claim 3, characterized in that, The first side plate and the second side plate are arranged opposite each other along the width direction of the box body.

5. The housing according to claim 2, characterized in that, The side plate facing the accommodating space has an accommodating groove for accommodating the liquid supply pipe and the gas supply pipe.

6. The housing according to claim 2, characterized in that, The spraying mechanism includes: The plurality of nozzles are spaced apart along the extension direction of the side plate.

7. The housing according to any one of claims 1-6, characterized in that, The thermal conductivity of the barrier element is K, which satisfies K≥0.4w / mk.

8. The housing according to any one of claims 1-6, characterized in that, The spraying mechanism is provided on two of the side plates that are arranged opposite each other.

9. The housing according to any one of claims 1-6, characterized in that, The enclosure also includes: The lid closes the first opening.

10. A battery, characterized in that, include: The housing as described in any one of claims 1-9; as well as The battery cell is housed within the housing space.

11. An electrical appliance, characterized in that, include: The battery of claim 10, wherein the battery is used to provide electrical energy; An air supply mechanism, connected to the spray mechanism, is used to supply gas to the spray mechanism; and A liquid supply mechanism is connected to the spray mechanism and is used to supply liquid to the spray mechanism.

12. The electrical appliance according to claim 11, characterized in that, The gas supply mechanism includes an air pump, a first pipeline, and a second pipeline; Both the first pipeline and the second pipeline are connected between the air pump and the spray mechanism. The air pump is used to supply the gas to the spray mechanism through the first pipeline, and the air pump is also used to draw back the atomizing medium in the containment space through the second pipeline.

13. The electrical appliance according to claim 12, characterized in that, The gas supply mechanism also includes: A first valve is provided in the first pipeline, and the first valve is used to open or close the first pipeline; A second valve is installed in the second pipeline, and the second valve is used to open or close the second pipeline.

14. The electrical appliance according to claim 12, characterized in that, The gas supply mechanism also includes: A filter element is disposed in the second pipeline and is connected to the liquid supply mechanism. The filter element is configured to filter the liquid in the atomizing medium in the second pipeline and deliver the liquid to the liquid supply mechanism.

15. The electrical appliance according to any one of claims 11-14, characterized in that, The electrical device also includes: A detection element is disposed inside the enclosure, and the detection element is configured to detect the temperature inside the enclosure and generate a temperature signal; The control module is configured to control the operation of the gas supply mechanism and the liquid supply mechanism according to the temperature signal; When the temperature represented by the temperature signal is higher than a first threshold, the control module controls the gas supply mechanism to provide the gas to the spray mechanism and controls the liquid supply mechanism to provide the liquid to the spray mechanism, so that the spray mechanism can spray the atomizing medium into the containing space. When the temperature represented by the temperature signal is lower than the second threshold, the control module controls the liquid supply mechanism to stop and controls the gas supply mechanism to retract the atomizing medium in the containment space.

16. A control method applicable to the electrical device according to any one of claims 11-15, characterized in that, The control method includes: Obtain the internal temperature of the battery; The gas supply mechanism and the liquid supply mechanism are controlled according to the temperature. When the temperature is higher than a first threshold, the gas supply mechanism is controlled to supply gas to the spray mechanism, and the liquid supply mechanism is controlled to supply liquid to the spray mechanism, so that the spray mechanism can spray the atomizing medium into the receiving space. When the temperature is lower than a second threshold, the liquid supply mechanism is controlled to stop, and the gas supply mechanism is controlled to retract the atomizing medium in the receiving space.

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