Battery device, energy storage system, charging grid and power consuming device

Abstract

The application relates to a battery device, an energy storage system, a charging grid and a power utilization device. The battery device comprises a battery cabin and a heat insulation device, the heat insulation device comprises a heat insulation base plate and an adsorption assembly, the heat insulation base plate has a fire-facing surface and a backfire surface, and the backfire surface is provided with a mounting groove. The adsorption assembly is arranged in the mounting groove and can adsorb the heat insulation base plate to the surface of the battery cabin to be insulated. When the heat insulation device is installed, the backfire surface of the heat insulation base plate is attached to the surface of the battery cabin, and the heat insulation base plate can be quickly adsorbed to the battery cabin under the action of the adsorption assembly, without the need for additional bolt connection or welding, thereby simplifying the installation process and greatly improving the installation efficiency of the heat insulation device. By arranging the adsorption assembly in the mounting groove, the space occupation of the adsorption assembly on the backfire surface is reduced, so that the heat insulation base plate can be more attached to the surface of the battery cabin to minimize the gap between the heat insulation base plate and the surface of the battery cabin, thereby achieving a better fire blocking and heat insulation effect.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to battery devices, energy storage systems, charging grids, and electrical devices. Background Technology

[0002] With the large-scale deployment of electrochemical energy storage power stations, fire safety has become a core challenge for the industry. When a battery compartment experiences internal thermal runaway, it can instantly generate extremely high temperatures and jet flames, easily triggering a chain reaction of thermal runaway to adjacent battery compartments, leading to a rapid expansion of the fire. Therefore, installing efficient fire-resistant and heat-insulating barriers between battery compartments to contain the fire within a single compartment is a rigid requirement for preventing catastrophic accidents.

[0003] Traditional fireproof and heat-insulating barriers rely on bolts or welding for fixing, which is a complicated, time-consuming, and labor-intensive process. Disassembly and replacement after a fire are also difficult. Utility Model Content

[0004] In view of the above problems, this application provides a battery device, energy storage system, charging grid and power supply device, which can alleviate the problem of cumbersome, time-consuming and labor-intensive heat insulation plate disassembly and assembly process.

[0005] In a first aspect, this application provides a battery device, the battery device comprising:

[0006] Battery compartment;

[0007] The heat insulation device includes a heat insulation substrate and an adsorption component. The heat insulation substrate has a fire-facing surface and a fire-resistant surface, and a mounting groove is provided on the fire-resistant surface. The adsorption component is disposed in the mounting groove and can adsorb the heat insulation substrate onto the surface of the battery compartment to be insulated.

[0008] The battery device provided in this application provides thermal insulation protection for the battery compartment by setting a heat insulation device on the surface of the battery compartment. The heat insulation device blocks the flame and the high-temperature gases generated by the flame through a heat insulation substrate. By setting an adsorption component on the unexposed side of the heat insulation substrate, the heat insulation substrate can be adsorbed onto the surface of the battery compartment. During installation, the unexposed side of the heat insulation substrate is attached to the surface of the battery compartment, and it can be quickly adsorbed onto the battery compartment under the action of the adsorption component. No additional bolt connections or welding are required, which simplifies the installation process and greatly improves the installation efficiency of the heat insulation device. In the event of thermal runaway in one battery compartment, it can be quickly installed on the surface of an adjacent battery compartment, which is more conducive to controlling the fire within a single battery compartment. By setting an installation groove on the unexposed side to accommodate the adsorption component, the space occupied by the adsorption component on the unexposed side is reduced, so that the heat insulation substrate can fit more closely to the surface of the battery compartment, minimizing the gap between the heat insulation substrate and the surface of the battery compartment, thereby achieving a better fire-blocking and heat insulation effect.

[0009] In some other embodiments, the adsorption component includes:

[0010] A magnet is slidably disposed in the mounting groove along a first direction, and the magnet can be attracted to the surface of the battery compartment; wherein, the first direction is the arrangement direction of the fire-facing side and the unfired side;

[0011] An elastic element has its two ends connected to a magnet and the bottom of a mounting groove along a first direction, respectively, and the elastic element is capable of extending and retracting along the first direction.

[0012] The battery device provided in this application embodiment slides a magnet within a mounting groove and connects it with an elastic element, allowing the magnet's position to be flexibly adjusted in the front-to-back direction. This allows it to be attracted to the battery compartment through flexible forward and backward movement, thus adapting to uneven battery compartment surfaces. When the battery compartment surface is relatively flat, the surface where the magnet is attracted to the battery compartment is essentially flush with the unexposed surface. When a depression appears at the point where the magnet is attracted to the battery compartment, the magnet can move forward until it protrudes beyond the unexposed surface. When a bulge appears at the point where the magnet is attracted to the battery compartment, the magnet is recessed within the mounting groove.

[0013] In some other embodiments, the adsorption assembly has an idle state and an operating state. In the idle state, the magnet is housed inside the mounting groove; in the operating state, the magnet slides along a first direction within the mounting groove under the action of an external force, following the deformation of the elastic element.

[0014] The battery device provided in this application embodiment, when idle, has its magnet housed inside the mounting slot, keeping the surface of the heat insulation substrate flat and facilitating the stacking of multiple heat insulation devices. During transport, the magnet housed inside the mounting slot provides protection, preventing it from being easily bumped or knocked. In the working state, the magnet is attracted by the battery compartment, overcoming the tension or thrust of the elastic element and sliding to engage with the battery compartment.

[0015] In some other embodiments, in the idle state, the surface of the magnet away from the elastic element maintains a distance L1 from the unexposed surface, where 10cm≤L1≤14cm.

[0016] In the battery device provided in this application embodiment, the magnet can remain housed inside the mounting slot in its natural state. Even when the unexposed side is facing down, the elastic element is stretched under gravity and the magnet slides towards the unexposed side, but still does not protrude from the unexposed side.

[0017] In some other embodiments, the distance from the connection point between the elastic element and the bottom of the mounting groove to the fire-facing surface is L2, and the distance from the connection point between the elastic element and the bottom of the mounting groove to the unfired surface is L3, wherein L2 < L3.

[0018] The battery device provided in this application embodiment, through the above-mentioned configuration, reserves sufficient space for the mounting groove on the heat insulation substrate, and minimizes the overall thickness of the heat insulation substrate to reduce the overall weight of the heat insulation device, thereby facilitating the handling and installation by the staff.

[0019] In some other embodiments, a gap is provided between the groove wall extending along the first direction and the magnet, and a lubricant is provided in the gap.

[0020] The battery device provided in this application embodiment can achieve heat insulation by setting the gap; furthermore, by setting a lubricant, the friction between the magnet and the groove wall is reduced, and the gas flow between the two can be blocked, which can better block heat transfer and improve the heat insulation effect.

[0021] In some other embodiments, the outer surface of the magnet and / or the wall of the mounting slot are coated with a heat-insulating layer.

[0022] The battery device provided in this application embodiment, by setting a heat insulation layer, can play a heat insulation role, which can reduce the heat transfer from the heat insulation substrate to the magnet and / or the mounting groove, thereby reducing the heat transfer to the battery compartment.

[0023] In some other embodiments, the thermal insulation device further includes:

[0024] A seal is disposed on the unexposed surface of the heat insulation substrate and located at the edge of the unexposed surface. The seal can be clamped between the heat insulation substrate and the surface of the battery compartment.

[0025] In the battery device provided in this application embodiment, when the heat insulation substrate is adsorbed into place by the adsorption component, the sealing member will be clamped between the heat insulation substrate and the surface of the battery compartment to seal the gap between the heat insulation substrate and the battery compartment, thereby alleviating the problem of flames entering the battery compartment from the gap between the heat insulation substrate and the battery compartment.

[0026] In some other embodiments, the seal is elastic and can deform under pressure from the thermal insulation substrate and the battery compartment.

[0027] The battery device provided in this application embodiment, through the above-described configuration, enables the sealing element to adapt to uneven battery compartment surfaces, achieving adaptive sealing.

[0028] In some other embodiments, the thickness of the heat insulation substrate is set to L4 along the first direction, wherein 40cm≤L4≤60cm.

[0029] The battery device provided in this application embodiment, with L4 within this value range, can reserve sufficient space for the installation slot and achieve good heat insulation.

[0030] In some other embodiments, multiple adsorption components are provided, with each adsorption component arranged at intervals on the unexposed surface, and the polarity of the magnets between each adjacent pair is opposite.

[0031] The battery device provided in this application embodiment, through the above configuration, can form a uniform and strong magnetic adsorption force field on the unexposed surface of the heat insulation substrate, while making maximum use of each magnet and reducing the formation of magnetic islands by a single magnet, which is beneficial to improving the uniformity of the adsorption force.

[0032] In some other embodiments, the adsorption components are arranged in an array on the unexposed side.

[0033] The battery device provided in this application embodiment has adjacent magnets in any row and adjacent magnets in any column with opposite polarities in the array. Furthermore, the polarities of opposite magnets in adjacent rows or columns are also opposite. Thus, it is possible to achieve opposite polarities for every two adjacent magnets throughout the entire array.

[0034] Secondly, this application provides an energy storage system, which includes a power conversion device and a battery device as described in any of the above embodiments, wherein the power conversion device is used to connect between a power generation device and a battery device.

[0035] Thirdly, this application provides a charging grid, which includes charging piles and an energy storage system as described in any of the above embodiments. The charging piles are electrically connected to the energy storage system, and the energy storage system is used to provide electrical energy to the charging piles.

[0036] Fourthly, this application provides an electrical device that includes a battery device according to any of the above embodiments, the battery device being used to provide electrical energy.

[0037] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0038] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0039] Figure 1 This is a schematic diagram of the battery compartment layout for some embodiments of this application;

[0040] Figure 2 This is a cross-sectional structural schematic diagram of the heat insulation device according to some embodiments of this application;

[0041] Figure 3 This is a front view structural diagram of a heat insulation device according to some embodiments of this application.

[0042] The reference numerals in the detailed embodiments are as follows:

[0043] 100. Battery compartment; 110. Battery compartment on fire; 120. Protective battery compartment; 200. Heat insulation device;

[0044] 1. Insulating substrate; 10. Mounting groove; 11. Fire-facing side; 12. Fire-resistant side;

[0045] 2. Adsorption component; 21. Magnet; 22. Elastic element; 23. Thermal insulation layer;

[0046] 3. Sealing components. Detailed Implementation

[0047] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0049] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0050] In this document, the term "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 throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0051] In the description of the embodiments 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, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0052] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0053] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0054] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0055] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in other fields. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0056] With the large-scale deployment of electrochemical energy storage power stations, fire safety has become a core challenge for the industry. When a battery compartment experiences internal thermal runaway, it can instantly generate extremely high temperatures and jet flames, easily triggering a chain reaction of thermal runaway to adjacent battery compartments, leading to a rapid expansion of the fire. Therefore, installing efficient fire-resistant and heat-insulating barriers between battery compartments to contain the fire within a single compartment is a rigid requirement for preventing catastrophic accidents.

[0057] The inventors of this application noted that traditional fireproofing and heat insulation methods involve installing heat insulation panels on the outer walls of the battery compartment to isolate the battery compartment requiring protection from the compartment prone to thermal runaway. When no fire occurs, the heat insulation panels need to be removed to maintain normal heat dissipation or other requirements for the battery compartment. When thermal runaway occurs in a battery compartment, the fire develops rapidly, requiring personnel to react quickly and complete the installation of the heat insulation panels before the fire escalates rapidly. Otherwise, once the fire spreads, it will quickly trigger a chain reaction of thermal runaway in adjacent battery compartments, posing a significant danger to personnel safety. Traditional heat insulation panels still rely on bolts or welding for connection, which is cumbersome, time-consuming, and labor-intensive, making it difficult to meet fire control requirements. Disassembly and replacement after a fire are also difficult, and installation and maintenance are challenging.

[0058] Based on the above considerations, and to address the problems of cumbersome, time-consuming, and labor-intensive installation and disassembly of heat insulation panels, the inventors, after in-depth research, designed a battery device that provides heat insulation protection for the battery compartment by incorporating a heat insulation device. The heat insulation device uses a heat insulation substrate to block flames and the high-temperature gases generated by them, and by setting an adsorption component on the unexposed side of the heat insulation substrate, the substrate can be adsorbed onto the surface of the battery compartment. During installation, the unexposed side of the heat insulation substrate is simply placed against the surface of the battery compartment, and it is quickly adsorbed by the adsorption component without the need for additional bolt connections or welding, simplifying the installation process and greatly improving the installation efficiency of the heat insulation device. In the event of thermal runaway in one battery compartment, it can be quickly installed on the surface of an adjacent battery compartment, making it easier to control the fire within a single battery compartment. Furthermore, by setting an installation groove on the unexposed side to accommodate the adsorption component, the space occupied by the adsorption component on the unexposed side is reduced, allowing the heat insulation substrate to fit more closely to the surface of the battery compartment, minimizing the gap between the heat insulation substrate and the battery compartment surface, and thus achieving better fire-blocking and heat insulation effects.

[0059] The battery device provided in this application embodiment may include multiple battery compartments, which are arranged at intervals between each other. When one of the battery compartments experiences thermal runaway, the aforementioned heat insulation device is quickly installed on the side facade of the adjacent battery compartment, especially on the side facade facing the fire.

[0060] Battery devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Battery devices can store electrical energy as needed and output it when appropriate. For example, a battery device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application embodiment can be any power system that requires the use of battery devices.

[0061] In some embodiments, the energy storage system may include modules such as battery devices, thermal management modules, main control modules, central control modules, power distribution modules, and fire protection modules.

[0062] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device via piping to regulate the temperature of the individual battery cells.

[0063] As an example, the main control module can serve as the battery management unit for a battery device, used to monitor and manage the device. The main control module can monitor information such as the battery device's current, voltage, power, or temperature. For instance, it can control the charging and discharging current and voltage of the battery device. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0064] As an example, the master control module can serve as the battery management unit of an energy storage system, used to monitor and manage the system. The master control module can monitor information such as current, voltage, power, state of charge, and temperature of the energy storage system. For instance, it can control the charging and discharging current and voltage of the energy storage system. As an example, the master control module includes modules such as an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0065] As an example, a fire protection system includes control panels, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in energy storage systems.

[0066] As an example, the power distribution unit can be used to distribute power to the power modules of an energy storage system.

[0067] In some embodiments, the energy storage system may include one or more battery devices and a power converter system (PCS), the power converter being connected between the power generation device and the battery devices. The power generation device generates electrical energy, which can be stored in the battery devices via the power converter, and the stored electrical energy in the battery devices can be released back to the power generation device via the power converter. As examples, the power generation device may specifically be a power grid, solar panels, hydroelectric power generation equipment, thermal power generation equipment, wind power generation equipment, etc. The specific type of power generation device is not limited in this application.

[0068] This application provides a charging network including a charging pile and a battery device. The charging pile is electrically connected to the battery device, which provides power to the charging pile. The charging pile and the battery device are electrically connected via a cable, and the battery device can provide its stored electrical energy to the charging pile. The charging pile has one or more connectors for connecting to electrical equipment (such as a vehicle), thereby enabling the charging equipment to be recharged.

[0069] The battery device can be located inside the charging station (e.g., an integrated energy storage and charging unit) or outside the charging station.

[0070] The battery device, energy storage system, charging grid, and power consumption device provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0071] See Figures 1-3 , Figure 1 This is a schematic diagram showing the layout of the battery compartment 100 according to some embodiments of this application; Figure 2 This is a cross-sectional structural schematic diagram of the heat insulation device 200 according to some embodiments of this application; Figure 3 This is a front view structural diagram of a heat insulation device 200 according to some embodiments of this application.

[0072] This application provides a battery device including a battery compartment 100 and a heat insulation device 200. The heat insulation device 200 includes a heat insulation substrate 1 and an adsorption assembly 2. The heat insulation substrate 1 has a flame-facing surface 11 and a flame-off surface 12, and a mounting groove 10 is provided on the flame-off surface 12. The adsorption assembly 2 is disposed in the mounting groove 10 and can adsorb the heat insulation substrate 1 onto the surface of the battery compartment 100 to be insulated.

[0073] The heat insulation device 200 provided in this embodiment provides heat insulation protection for the battery compartment 100. The heat insulation device 200 blocks flames and high-temperature gases generated by the flames through a heat insulation substrate 1. An adsorption component 2 is provided on the unexposed surface 12 of the heat insulation substrate 1, allowing the heat insulation substrate 1 to adhere to the surface of the battery compartment 100 to be insulated. During installation, the unexposed surface 12 of the heat insulation substrate 1 is attached to the surface of the battery compartment 100, and it is quickly adsorbed onto the battery compartment 100 under the action of the adsorption component 2. No additional bolt connections or welding are required, simplifying the installation process and greatly improving the installation efficiency of the heat insulation device 200. It can be quickly installed on the surface of adjacent battery compartments 100 in the event of thermal runaway in one battery compartment 100, making it easier to control the fire within a single battery compartment 100. By providing an installation groove 10 on the unexposed surface 12 to accommodate the adsorption component 2, the space occupied by the adsorption component 2 on the unexposed surface 12 is reduced, thereby allowing the heat insulation substrate 1 to fit more closely to the surface of the battery compartment 100, so as to minimize the gap between the heat insulation substrate 1 and the surface of the battery compartment 100, thereby achieving a better fireproof and heat insulation effect.

[0074] like Figure 1 As shown, multiple battery compartments 100 are arranged at intervals. When one of the battery compartments 100 experiences thermal runaway (e.g. Figure 1 The fire in battery compartment 110 (as shown) may affect adjacent battery compartments 100 (e.g., battery compartment 110 on fire). Figure 1 (See the protective battery compartment 120 shown). Therefore, the side facades of the protective battery compartment 120, especially the side facades facing the burning battery compartment 110, need to be quickly fitted with heat insulation devices 200 to form isolation protection through the heat insulation devices 200, thereby mitigating the problem of fire spread.

[0075] Figure 1 The diagram shows a heat insulation device 200 installed on a protective battery compartment 120 adjacent to the burning battery compartment 110. It is understood that heat insulation devices 200 also need to be installed on other battery compartments 100 adjacent to the burning battery compartment 110. The protective battery compartment 120 is not limited to having the heat insulation device 200 installed only on the side facade facing the burning battery compartment 110; depending on protection requirements, the heat insulation device 200 may also be installed on other side facades of the protective battery compartment 120.

[0076] The heat insulation substrate 1, as the core load-bearing and heat insulation component, can be made of fire-resistant materials such as ceramic fiber board or calcium silicate board. The size and weight of a single heat insulation substrate 1 are ergonomically optimized so that one or two maintenance personnel can easily move, hold, and install it.

[0077] Optionally, the edge of the heat insulation substrate 1 is designed with an anti-slip structure, such as an anti-slip handle or grip groove, to facilitate manual operation.

[0078] In some embodiments, the adsorption component 2 includes a magnet 21 and an elastic element 22. The magnet 21 is slidably disposed in the mounting groove 10 along a first direction and can be adsorbed onto the surface of the battery compartment 100. The first direction is the arrangement direction of the fire-facing surface 11 and the unfired surface 12, which is also the thickness direction of the heat insulation substrate 1, specifically the front-back direction as shown in the figure. The two ends of the elastic element 22 are respectively connected to the magnet 21 and the bottom of the mounting groove 10 along the first direction, and the elastic element 22 can extend and retract along the first direction. Optionally, the magnet 21 can be a samarium cobalt (SmCo) permanent magnet.

[0079] In this embodiment, the adsorption component 2 is configured as a magnetic structure. The magnet 21 is slidably positioned within the mounting groove 10 and connected to it by an elastic element 22. This allows the position of the magnet 21 to be flexibly adjusted in the front-to-back direction, enabling it to adhere to the battery compartment 100 through flexible forward and backward movement. This adapts to uneven surfaces of the battery compartment 100. When the surface of the battery compartment 100 is relatively flat, the surface where the magnet 21 adheres to the battery compartment 100 is essentially flush with the unexposed surface 12. When a pit appears at the adsorption location of the magnet 21 on the battery compartment 100, the magnet 21 can move forward until it protrudes beyond the unexposed surface 12. When a protrusion appears at the adsorption location of the magnet 21 on the battery compartment 100, the magnet 21 is recessed within the mounting groove 10.

[0080] In other embodiments, the adsorption component 2 can also be configured as a suction cup or adhesive structure, which can also quickly install the heat insulation substrate 1 onto the outer surface of the battery compartment 100. It should be noted that the suction cup or adhesive is made of a high-temperature resistant material so that it can stably perform its connection and fixation function in a fire.

[0081] In some embodiments, the elastic element 22 is a high-temperature resistant spring. The high-temperature resistant spring is installed in the mounting groove 10, and its outer diameter is significantly smaller than that of the mounting groove 10. It maintains a large gap with the groove wall of the mounting groove 10 in the front-to-back direction. That is, a large air gap is maintained in the mounting groove 10. This air gap can block the heat transfer path, thereby reducing the heat transfer from the fire-facing surface 11 to the unfired surface 12.

[0082] For example, the high-temperature resistant spring is made of a nickel-based high-temperature alloy, specifically Inconel X-750 or Inconel 718 alloy. The elastic element 22 made of the above material retains more than 85% of its elastic modulus at 600°C and does not undergo permanent creep deformation at 800°C, allowing it to provide stable thrust even under fire conditions. The elastic element 22 made of this material also has good oxidation and corrosion resistance; the dense oxide layer formed on its surface can resist long-term erosion from humidity and salt spray in outdoor storage environments. The elastic element 22 made of this material also has good fatigue resistance, with a resistance of 10... 5 After several compression cycles, its elasticity decay rate is less than 5%, which can meet the reliability requirements under long-term service conditions.

[0083] In some embodiments, the adsorption component 2 has an idle state and an operating state. In the idle state, the magnet 21 is housed inside the mounting groove 10. In the operating state, the magnet 21 slides along the front-to-back direction within the mounting groove 10 under the action of external force, following the deformation of the elastic member 22. This arrangement ensures that, in the idle state, the magnet 21 remains housed inside the mounting groove 10, keeping the surface of the heat insulation substrate 1 flat and facilitating the stacking of multiple heat insulation devices 200. During transport, the magnet 21 is housed inside the mounting groove 10, providing protection and preventing damage from impacts. In the operating state, the magnet 21 is attracted by the battery compartment 100, overcoming the pulling or pushing force of the elastic member 22 to slide and engage with the battery compartment 100.

[0084] In some embodiments, in the idle state, the surface of the magnet 21 facing away from the elastic member 22 maintains a distance L1 from the unexposed surface 12, where 10cm≤L1≤14cm. With this configuration, in the natural state, the magnet 21 can remain retracted inside the mounting groove 10. Even when the unexposed surface 12 is facing down, the elastic member 22 is stretched under gravity, and the magnet 21 slides towards the unexposed surface 12, but still does not protrude from the unexposed surface 12.

[0085] For example, L1 can be set to values ​​such as 10cm, 11cm, 12cm, 13cm, 14cm, or any other value or range of values ​​within the range of 10cm to 14cm.

[0086] In some embodiments, the distance from the connection point of the elastic element 22 and the bottom of the mounting groove 10 to the fire-facing surface 11 is L2, and the distance from the connection point of the elastic element 22 and the bottom of the mounting groove 10 to the un-fired surface 12 is L3, where L2 < L3. This configuration, while reserving sufficient space on the heat insulation substrate 1 for the mounting groove 10, minimizes the overall thickness of the heat insulation substrate 1, thereby reducing the overall weight of the heat insulation device 200 and facilitating handling and installation by personnel.

[0087] In some embodiments, a gap is provided between the groove wall of the mounting groove 10 extending in the front-to-back direction and the magnet 21, and a lubricant is provided in the gap. Optionally, the gap between the groove wall and the magnet 21 can be set to 0.3cm~0.5cm. By setting this gap, heat insulation can be achieved; furthermore, by providing lubricant, the friction between the magnet 21 and the groove wall is reduced, and the gas flow between them can be blocked, which can better block heat transfer and improve the heat insulation effect.

[0088] Optionally, molybdenum disulfide grease can be used as the lubricant to achieve good high-temperature resistance.

[0089] In some embodiments, a heat insulation layer 23 is coated on the outer surface of the magnet 21 and / or the wall of the mounting groove 10. By providing the heat insulation layer 23, heat insulation is achieved, which reduces the heat transfer from the heat insulation substrate 1 to the magnet 21 and / or the mounting groove 10, thereby reducing the heat transfer to the battery compartment 100.

[0090] Optionally, the insulation layer 23 is configured with a high-reflectivity ceramic coating (such as a zirconia coating) with a relatively small coating thickness. By setting a high-reflectivity ceramic coating, the magnet 21 can be physically isolated from the flame and high-temperature smoke, protecting the performance stability of the magnet 21 under high temperatures in a fire and helping to alleviate the problem of premature demagnetization. Furthermore, it can reduce the metal connection between the adsorption component 2 and the insulation substrate 1, preventing heat from being rapidly conducted through the adsorption component 2 by creating a "thermal bridge," making the insulation performance of the insulation substrate 1 much higher than that of traditional insulation boards that are installed and fixed by metal fasteners (such as bolts).

[0091] In some embodiments, the thickness of the heat insulation substrate 1 is set to L4 along the front-to-back direction, wherein 40cm≤L4≤60cm. Within this range, sufficient space can be reserved for the installation groove 10, and good heat insulation effect can be achieved.

[0092] For example, L4 can be set to values ​​such as 40cm, 45cm, 50cm, 55cm, 60cm, or any other value or range of values ​​within the range of 40cm to 60cm.

[0093] Taking one design dimension of the mounting groove 10, elastic element 22, and magnet 21 as an example, the depth L3 of the mounting groove 10 along the front-to-back direction is set to 24cm, and the thickness L5 of the magnet 21 along the front-to-back direction (the thickness after coating with heat insulation layer 23) is set to 5cm. The free length of the elastic element 22 is set to 12cm, and the maximum length of the elastic element 22 after stretching can reach 21cm, while the minimum length after compression can reach 4cm. The elastic stiffness of the elastic element 22 is set to 0.2~0.3N / cm, and its elastic force is less than the attraction force of the magnet 21, so that when the magnet 21 and the battery compartment 100 attract each other, the elastic force of the elastic element 22 can be overcome and the element can slide flexibly within the mounting groove 10.

[0094] In some embodiments, multiple sets of adsorption components 2 are provided, with each adsorption component 2 arranged at intervals on the unexposed surface 12, and the polarities of the magnets 21 between each adjacent pair being opposite. By such arrangement, a uniform and strong magnetic adsorption force field can be formed on the unexposed surface 12 of the heat insulation substrate 1, while making maximum use of each magnet 21, reducing the formation of magnetic islands by a single magnet 21, which is beneficial to improving the uniformity of the adsorption force.

[0095] In some embodiments, the adsorption components 2 are arranged in an array on the unexposed surface 12. In the array, adjacent magnets 21 in any row have opposite polarities, and adjacent magnets 21 in any column have opposite polarities. Furthermore, in adjacent rows or columns, the polarities of two opposing magnets 21 are also opposite. In this way, the polarities of every two adjacent magnets 21 are opposite throughout the entire array.

[0096] In some embodiments, the heat insulation device 200 further includes a sealing element 3, which is disposed on the unexposed surface 12 of the heat insulation substrate 1 and located at the edge of the unexposed surface 12. The sealing element 3 can be clamped between the heat insulation substrate 1 and the surface of the battery compartment 100. When the heat insulation substrate 1 is adsorbed into place by the adsorption assembly 2, the sealing element 3 will be clamped between the heat insulation substrate 1 and the surface of the battery compartment 100, thereby sealing the gap between the heat insulation substrate 1 and the battery compartment 100 and alleviating the problem of flame entering the battery compartment 100 from the gap between the heat insulation substrate 1 and the battery compartment 100.

[0097] In some embodiments, the seal 3 is elastic and can deform under pressure from the heat insulation substrate 1 and the battery compartment 100. This configuration allows the seal 3 to adapt to uneven surfaces of the battery compartment 100, achieving adaptive sealing.

[0098] In some embodiments, the sealing element 3 is configured as a square frame structure with its outer edge flush with the outer edge of the heat insulation substrate 1. All adsorption components 2 are framed within the sealing element 3 to form heat insulation protection for the magnet 21 through the sealing barrier of the sealing element 3.

[0099] In some embodiments, a guide structure may also be provided between the heat insulation substrate 1 and the battery compartment 100 to provide installation guidance for the installation of the heat insulation device 200 on the battery compartment 100, thereby improving the speed of installation.

[0100] Optionally, the guide structure includes a protrusion and a groove. A protrusion can be provided on one of the heat insulation substrate 1 and the battery compartment 100, and a groove can be provided on the other. The installation of the heat insulation substrate 1 can be limited by inserting the protrusion into the groove.

[0101] The battery device provided in this application includes a battery compartment 100 and a heat insulation device 200. The heat insulation device 200 is magnetically attached to the side surface of the battery compartment 100 for quick assembly and disassembly. The heat insulation device 200 includes a heat insulation substrate 1, an adsorption assembly 2, and a sealing member 3. The heat insulation substrate 1 has a flame-facing surface 11 and a flame-off surface 12. During installation, the flame-off surface 12 is in contact with the outer surface of the battery compartment 100. The sealing member 3 is disposed on the flame-off surface 12 of the heat insulation substrate 1 and located at the edge of the flame-off surface 12. The sealing member 3 can be clamped between the heat insulation substrate 1 and the surface of the battery compartment 100. When the heat insulation substrate 1 is adsorbed into place by the adsorption assembly 2, the sealing member 3 deforms under the clamping force between the heat insulation substrate 1 and the battery compartment 100 to adaptively seal according to the gap between the heat insulation substrate 1 and the battery compartment 100, mitigating the problem of flame entering the battery compartment 100 through the gap between the heat insulation substrate 1 and the battery compartment 100. A mounting groove 10 is provided on the unexposed surface 12 of the heat insulation substrate 1, and the adsorption assembly 2 is disposed within the mounting groove 10. The adsorption assembly 2 includes a magnet 21 and an elastic member 22. The magnet 21 is slidably disposed within the mounting groove 10 in the front-back direction and can adsorb onto the surface of the battery compartment 100. The two ends of the elastic member 22 are respectively connected to the magnet 21 and the bottom of the mounting groove 10, and the elastic member 22 can extend and retract in a first direction. When the surface of the battery compartment 100 is relatively flat, the surface of the battery compartment 100 where the magnet 21 adsorbs is basically flush with the unexposed surface 12. When a pit appears at the position where the magnet 21 adsorbs on the battery compartment 100, the magnet 21 can move forward until it protrudes from the unexposed surface 12 or the sealing member 3. When a protrusion appears at the position where the magnet 21 adsorbs on the battery compartment 100, the magnet 21 is recessed into the mounting groove 10. In this way, the heat insulation substrate 1 can be firmly installed on the battery compartment 100 with protrusions or depressions on its surface.

[0102] This application also provides an energy storage system, which includes a power conversion device and a battery device as described in any of the above embodiments, wherein the power conversion device is used to connect between the power generation device and the battery device.

[0103] This application also provides a charging grid, which includes charging piles and an energy storage system as described in any of the above embodiments. The charging piles are electrically connected to the energy storage system, and the energy storage system is used to provide power to the charging piles.

[0104] This application also provides an electrical device, which includes a battery device as described in any of the above embodiments, the battery device being used to provide electrical energy. The electrical device can be, but is not limited to, a mobile phone, tablet, laptop, electric toy, power tool, electric vehicle, electric car, ship, 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.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Battery compartment (100); The heat insulation device (200) includes a heat insulation substrate (1) and an adsorption component (2). The heat insulation substrate (1) has a fire-facing surface (11) and a fire-resistant surface (12). An installation groove (10) is provided on the fire-resistant surface (12). The adsorption component (2) is disposed in the installation groove (10) and can adsorb the heat insulation substrate (1) onto the surface of the battery compartment (100).

2. The battery device according to claim 1, characterized in that, The adsorption component (2) includes: A magnet (21) is slidably disposed in the mounting groove (10) along a first direction, and the magnet (21) can be adsorbed onto the surface of the battery compartment (100); wherein, the first direction is the arrangement direction of the fire-facing surface (11) and the fire-repellent surface (12); The elastic element (22) has its two ends connected to the bottom of the groove along the first direction of the magnet (21) and the mounting groove (10), respectively, and the elastic element (22) is capable of extending and retracting along the first direction.

3. The battery device according to claim 2, characterized in that, The adsorption component (2) has an idle state and a working state. In the idle state, the magnet (21) is housed inside the mounting groove (10). In the working state, the magnet (21) slides in the mounting groove (10) along the first direction under the action of external force, following the deformation of the elastic element (22).

4. The battery device according to claim 3, characterized in that, In the idle state, the surface of the magnet (21) facing away from the elastic member (22) maintains a distance L1 from the back surface (12), where 10cm≤L1≤14cm.

5. The battery device according to claim 2, characterized in that, The distance from the connection point of the elastic element (22) and the bottom of the mounting groove (10) to the fire-facing surface (11) is L2, and the distance from the connection point of the elastic element (22) and the bottom of the mounting groove (10) to the unfired surface (12) is L3, where L2 < L3.

6. The battery device according to claim 2, characterized in that, A gap is provided between the groove wall of the mounting groove (10) extending along the first direction and the magnet (21), and a lubricant is provided in the gap.

7. The battery device according to claim 2, characterized in that, The outer surface of the magnet (21) and / or the wall of the mounting groove (10) are coated with a heat insulation layer (23).

8. The battery device according to any one of claims 1 to 7, characterized in that, The heat insulation device (200) further includes: A sealing element (3) is disposed on the unexposed surface (12) of the heat insulation substrate (1) and located at the edge of the unexposed surface (12). The sealing element (3) can be clamped between the heat insulation substrate (1) and the surface of the battery compartment (100).

9. The battery device according to claim 8, characterized in that, The seal (3) is elastic and can deform under the pressure of the heat insulation substrate (1) and the battery compartment (100).

10. The battery device according to any one of claims 2 to 7, characterized in that, Along the first direction, the thickness of the heat insulation substrate (1) is set to L4, wherein 40cm≤L4≤60cm.

11. The battery device according to any one of claims 2 to 7, characterized in that, The adsorption components (2) are provided in multiple sets, and each adsorption component (2) is arranged at intervals on the back surface (12), and the polarity of the magnet (21) between each adjacent pair is opposite.

12. The battery device according to claim 11, characterized in that, Each of the adsorption components (2) is arranged in an array on the unexposed surface (12).

13. An energy storage system, characterized in that, It includes a power conversion device and a battery device as described in any one of claims 1 to 12, wherein the power conversion device is used to connect between the power generation device and the battery device.

14. A charging grid, characterized in that, It includes a charging pile and an energy storage system as described in claim 13, wherein the charging pile is electrically connected to the energy storage system, and the energy storage system is used to provide electrical energy to the charging pile.

15. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 12, the battery device being used to provide electrical energy.

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