Power storage integrated device, power storage extension pack, and power storage facility

Abstract

To provide a fire fighting solution specialized in a power storage facility (especially highly integrated balcony power storage).SOLUTION: The power storage integrated apparatus includes an integrated apparatus housing and a fire fighting module 108 provided in the integrated apparatus housing. The integrated apparatus housing includes a battery box housing 110 and a heat sink housing 112 that are detachably connected, and an inverter circuit board 106 is fixed in the heat sink housing. The fire extinguishing module includes a trigger mechanism, a fire extinguishing agent storage, and a release mechanism, and the trigger mechanism is provided in a fire extinguishing detection area 120 in the integrated apparatus housing and generates a trigger signal when the fire extinguishing detection area satisfies a fire extinguishing trigger condition. The fire extinguishing agent storage stores the fire extinguishing agent, and the release mechanism releases the fire extinguishing agent to the chamber 150 where the battery module 104 is located in response to the trigger signal of the trigger mechanism.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] This application claims priority to and the benefit of patent applications bearing patent application numbers 202510987703.6 and 202521495123.7, filed with the State Intellectual Property Office of China on July 16, 2025, the entire text of which is incorporated herein by reference.

[0002] The present application relates to the field of electricity storage technology, and more particularly to an integrated electricity storage device, an electricity storage expansion pack, and an electricity storage facility. [Background technology]

[0003] Lithium batteries are a core component of energy storage systems, so their safety is extremely important. Unlike commercial and industrial energy storage systems, consumer energy storage systems are directly related to the safety of users' personal and property. However, lithium batteries can experience thermal runaway (a chain reaction of heat release caused by an uncontrollable rise in temperature) due to internal or external factors, which can further pose a risk of fire or combustion. Therefore, how to further improve the safety of consumer energy storage systems is an important technical challenge that must be overcome as soon as possible.

[0004] Currently, consumer energy storage products (e.g., balcony solar energy storage) generally rely on a BMS-based pre-thermal runaway prevention strategy. This strategy monitors the temperatures of individual cells 114 and key components (inverter, BMS, EMS) to trigger output curtailment or shutdown to reduce temperature and prevent disasters. However, as devices become more highly integrated (integrating battery modules, BMS, EMS, and inverters), their internal environments become increasingly complex, making it difficult for pre-set algorithms to cover all sudden abnormal situations. More importantly, once thermal runaway breaks through the algorithm's defense line (i.e., smoke has already been emitted and fire has broken out), existing measures lack timely and effective emergency response measures. As described above, there is a strong demand in the current market for firefighting solutions that are specialized for consumer energy storage equipment (especially highly integrated balcony energy storage). Summary of the Invention [Problem to be solved by the invention]

[0005] The present application provides an integrated power storage device, a power storage expansion pack, and a power storage facility that can solve at least one of the above technical problems. [Means for solving the problem]

[0006] An integrated power storage device according to an embodiment of the present application includes an integrated device housing and a first fire protection module provided in the integrated device housing, the integrated device housing includes a first battery box case and a heat sink case that are detachably connected, a first battery module is fixed in the first battery box case, and an inverter circuit board is fixed in the heat sink case; the first battery module includes a plurality of cells for storing and outputting electric energy; the inverter circuit board is used to convert AC power and DC power, and dissipates heat to the outside through the heat sink case; the first firefighting module includes a trigger mechanism, a fire extinguishing agent storage chamber, and a release mechanism; The trigger mechanism is provided in a fire detection area within the integrated device housing, and generates a trigger signal when the fire detection area satisfies a fire trigger condition; The fire extinguishing agent storage cabinet is used to store a fire extinguishing agent, The release mechanism is used to release the extinguishing agent into a chamber in which the first battery module is located in response to the trigger signal of the trigger mechanism.

[0007] The above-mentioned energy storage integrated device is designed with a fire prevention solution and adopts a built-in fire prevention design that is compact, economical, maintenance-free, efficient and reliable, and does not affect the appearance of the energy storage equipment.

[0008] A power storage expansion pack according to an embodiment of the present application is electrically connected to a power storage integrated device and is used to expand the power storage integrated device, and the power storage expansion pack includes an expansion pack housing and a second fire protection module provided in the expansion pack housing; the expansion pack housing includes a second battery box case and a cover plate that are detachably connected, a second battery module is fixed in the second battery box case, and the cover plate is used to close an attachment opening of the second battery box case; the second battery module includes a plurality of cells for storing and outputting electric energy; the second fire module includes a trigger mechanism, a fire extinguishing agent storage chamber, and a release mechanism; the trigger mechanism is provided in a fire detection area within the expansion pack housing, and generates a trigger signal when the fire detection area satisfies a fire trigger condition; The fire extinguishing agent storage cabinet is used to store a fire extinguishing agent, The release mechanism releases the extinguishing agent into a chamber in which the second battery module is located in response to the trigger signal from the trigger mechanism.

[0009] The power storage facility according to the embodiment of the present application includes: The above-mentioned integrated power storage device, At least one of the above-mentioned storage expansion packs, The power storage expansion pack is used to expand the power storage integrated device by being electrically connected to the power storage integrated device.

[0010] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the present application. [Brief explanation of the drawings]

[0011] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the drawings. [Figure 1]1 is a structural schematic diagram of an integrated power storage device according to an embodiment of the present application; [Figure 2] 10 is another structural schematic diagram of the integrated power storage device according to the embodiment of the present application. FIG. [Figure 3] 1 is an exploded schematic view of an integrated power storage device according to an embodiment of the present application; [Figure 4] FIG. 10 is another exploded schematic view of the integrated power storage device according to the embodiment of the present application. [Figure 5] 1 is a structural schematic diagram of a first fire protection module and a second fire protection module according to an embodiment of the present application; [Figure 6] FIG. 2 is another structural schematic diagram of the first fire protection module and the second fire protection module according to an embodiment of the present application; [Figure 7] FIG. 2 is a structural schematic diagram of a single cell according to an embodiment of the present application. [Figure 8] 1 is a structural schematic diagram of a power storage expansion pack according to an embodiment of the present application; [Figure 9] 3 is another structural schematic diagram of the power storage expansion pack according to the embodiment of the present application. FIG. [Figure 10] 1 is an exploded schematic view of a power storage expansion pack according to an embodiment of the present application. [Figure 11] FIG. 4 is another exploded schematic view of the electricity storage expansion pack according to the embodiment of the present application. [Figure 12] 1 is a structural schematic diagram of a power storage facility according to an embodiment of the present application; [Figure 13] FIG. 1 is a top view of a power storage facility according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0012] The following describes in detail the embodiments of the present application. Examples according to the embodiments are shown in the drawings, and the same or similar reference numerals throughout refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and are not to be construed as limiting the present application.

[0013] In the description of this application, unless otherwise specified or limited, terms such as "attached," "coupled," and "connected" should be understood in a broad sense, and may mean, for example, fixedly connected, detachably connected, or integrally connected. They may be mechanically connected or electrically connected. They may be directly connected, indirectly connected via an intermediate medium, or may be internal communication between two elements or an interactive relationship between two elements. Those skilled in the art will be able to understand the specific concepts of the above technical terms in this application according to specific circumstances.

[0014] 1 to 6 , an integrated power storage device 100 according to an embodiment of the present application includes an integrated device housing 102, a first battery module 104, an inverter circuit board 106, and a first fire-fighting module 108. The integrated device housing 102 includes a first battery box case 110 and a heat sink case 112, which are detachably connected. The first battery module 104 is fixed in the first battery box case 110, and the inverter circuit board 106 is fixed in the heat sink case 112. The first battery module 104 includes a plurality of cells 114 for storing and outputting electric energy. The inverter circuit board 106 is used to convert AC power and DC power and dissipates heat to the outside via the heat sink case 112. The first fire-fighting module 108 is located within the integrated device housing 102. In this embodiment, the first fire-fighting module 108 is provided within the first battery box case 110 and includes a trigger mechanism 116, a fire-extinguishing agent storage chamber, and a release mechanism 118. As can be understood, the first fire protection module 108 is not limited to being disposed within the first battery box case 110, but may be located at other positions within the integrated equipment housing 102, for example, within the heat sink case 112.

[0015] The trigger mechanism 116 is disposed in the fire detection area 120 within the integrated device housing 102 and generates a trigger signal when the fire detection area 120 meets a fire trigger condition. The fire extinguishing agent storage chamber is used to store the fire extinguishing agent. In response to the trigger signal from the trigger mechanism 116, the release mechanism 118 releases the fire extinguishing agent into the chamber in which the first battery module 104 is located.

[0016] The above-mentioned energy storage integrated device 100 comprehensively considers the characteristics of consumer energy storage products, carefully designs fire protection solutions for consumer energy storage products, and adopts a built-in fire protection design that is compact, economical, maintenance-free, efficient and reliable, and does not affect the appearance of the energy storage facility 300.

[0017] Alternatively, the integrated energy storage device 100 may refer to an energy storage product in which a battery module and an inverter circuit board 106 are assembled into the integrated energy storage device 100, which can meet the design requirements for miniaturization and is applicable to usage scenarios where space is limited, such as home energy storage and balcony energy storage.

[0018] The integrated device housing 102 is a member that can protect other members of the integrated power storage device 100, preventing problems such as moisture, dust, etc. from entering charged members and causing short circuits or wire breakage due to corrosion, and at the same time, the integrated device housing 102 also serves to retain heat to a certain extent. The material of the integrated device housing 102 includes, but is not limited to, metal (e.g., iron, aluminum, etc.). Preferably, the outer surface of the integrated device housing 102 may be coated with a protective layer (e.g., an anti-rust layer, an anti-oxidation layer, etc.), so that the integrated device housing 102 can adapt to complex environmental changes.

[0019] The integrated device housing 102 includes a first battery box case 110 and a heat sink case 112. A first mounting opening 122 is provided on one side of the first battery box case 110 facing the heat sink case 112, and a second mounting opening 124 is provided on one side of the heat sink case 112 facing the first battery box case 110. The first battery box case 110 and the heat sink case 112 can be detachably connected via the first mounting opening 122 and the second mounting opening 124. The detachable connection between the first battery box case 110 and the heat sink case 112 facilitates maintenance of the integrated power storage device 100. Methods for detachably connecting the first battery box case 110 and the heat sink case 112 include, but are not limited to, screw, snap, and other connection methods.

[0020] The first battery module 104 is fixed in the first battery box case 110 by a connection method including, but not limited to, screws. The first battery box case 110 protects and isolates the first battery module 104. The multiple cells 114 of the first battery module 104 can be electrically connected in series, parallel, or hybrid connection. A hybrid connection refers to a parallel connection between the multiple cells 114 and a series connection. The cells 114 can be used to store and output electric energy. For example, the integrated energy storage device 100 can be connected to an external power source (e.g., a solar panel or an AC power source), and the cells 114 can store electric energy input from the external power source. Alternatively, for example, a load can be connected to the integrated energy storage device 100, and the cells 114 can output electric energy to the load. The cells 114 can include, but are not limited to, lithium batteries, sodium batteries, etc.

[0021] The inverter circuit board 106 can be fixed within the heat sink case 112 by a method including, but not limited to, screws. The integrated energy storage device 100 further includes a first battery management control board 126, and the inverter circuit board 106 can be electrically connected to the first battery module 104 via the first battery management control board 126. The inverter circuit board 106 is used to convert AC power and DC power. In one embodiment, the inverter circuit board 106 can convert DC power output from the single cell 114 into AC power suitable for powering a load. In one embodiment, the inverter circuit board 106 can convert AC power from an external power source into DC power suitable for charging the single cell 114.

[0022] In one embodiment, the inverter circuit board 106 can perform power control and includes a DC / DC (direct current / direct current) converter, a DC / AC (direct current / alternating current) bidirectional converter, and an MPPT (maximum power point tracking) module, all of which generate a large amount of heat. The inverter circuit board 106 is mounted within a heat sink case 112, which allows heat generated during operation of the inverter circuit board 106 to be dissipated to the outside of the integrated power storage device 100 in a timely manner, thereby ensuring normal operation of the integrated power storage device 100 to some extent. Optionally, the heat-generating components of the inverter circuit board 106 may face the inner surface of the heat sink case 112.

[0023] Optionally, heat dissipation fins 128 may be provided on the surface of the heat sink case 112 facing away from the inverter circuit board 106. The heat dissipation fins 128 increase the surface area of ​​the heat sink case 112, thereby improving heat dissipation efficiency. Arranging the length of the heat dissipation fins 128 along the vertical direction of the integrated energy storage device 100 is advantageous in that cool air at the bottom of the heat dissipation fins 128 is replenished to the heat dissipation fins 128 in a timely manner, thereby further improving heat dissipation efficiency. Preferably, the inverter circuit board 106 has a substantially flat shape, and arranging the inverter circuit board 106 along the vertical direction of the integrated energy storage device 100 allows heat to be dissipated to the heat sink case 112 in a timely manner to the maximum extent.

[0024] The first fire-fighting module 108 is used to realize the fire-fighting function of the integrated power storage device 100. Among the components of the integrated power storage device 100, the first battery module 104 is a component prone to thermal runaway, and the first fire-fighting module 108 is installed in the first battery box case. When a thermal runaway state occurs in the first battery module 104, the first fire-fighting module 108 can respond in a timely manner to release a fire extinguishing agent into the chamber where the first battery module 104 is located, thereby playing an important role in suppressing the thermal runaway state of the first battery module 104 in an early stage and preventing further expansion of the thermal runaway, thereby ensuring the safety of the integrated power storage device 100. Optionally, the first fire-fighting module 108 is installed in an area adjacent to the first battery module 104 in the first battery box case 110.

[0025] The first fire protection module 108 includes a trigger mechanism 116 and a fire extinguishing agent storage and release mechanism 118. The trigger mechanism 116 is located in a fire protection detection area 120 within the integrated device housing 102. Optionally, a thermal simulation test may be performed on the integrated device housing 102 of the integrated energy storage device 100 to determine a heat accumulation area, i.e., an area prone to thermal runaway, within the integrated device housing 102 while the integrated energy storage device 100 is operating. The heat accumulation area may then be selected as the fire protection detection area 120. Optionally, the fire protection detection area 120 may be located within the first battery box case 110. Preferably, the fire protection detection area 120 is located within the first battery module 104 or in the electrode area of ​​the first battery module 104. It should be understood that in other embodiments, the fire protection detection area 120 may be located elsewhere within the integrated device housing 102 of the integrated energy storage device 100, and may be determined through simulation, testing, experience, or other methods.

[0026] The trigger mechanism 116 generates a trigger signal when the fire detection area 120 satisfies a fire trigger condition. Optionally, the fire detection area 120 satisfies the fire trigger condition when the temperature of the fire detection area 120 is equal to or greater than a predetermined temperature, or the fire detection area 120 satisfies the fire trigger condition when the air pressure of the fire detection area 120 is equal to or greater than a predetermined air pressure.

[0027] The fire extinguishing agent storage cabinet is used to store the fire extinguishing agent so that it can be properly stored, so that when the fire detection area 120 meets the fire trigger condition, the fire extinguishing agent can be timely and sufficiently released by the release mechanism 118 into the chamber where the first battery module 104 is located. The fire extinguishing agent storage cabinet can adopt a normal pressure storage method, and although the design life of the power storage equipment 300 exceeds 10 years, the normal pressure storage fire extinguishing agent storage cabinet does not require regular maintenance or repair, making it very suitable for the power storage equipment 200.

[0028] Extinguishing agents may include, but are not limited to, gas-based extinguishing agents, water-based extinguishing agents, and other extinguishing agents. Gas-based extinguishing agents may include, but are not limited to, heptafluoropropane and perfluorohexanone. Water-based extinguishing agents include, but are not limited to, high-pressure water mist and water-based gel. Other extinguishing agents may include, but are not limited to, dry powder extinguishing agents, hot aerosols, carbon dioxide, etc.

[0029] The release mechanism 118 can release a fire extinguishing agent into the chamber where the first battery module 104 is located in response to a trigger signal from the trigger mechanism 116. When the fire detection area 120 meets the fire trigger condition, the fire extinguishing agent is released into the chamber where the first battery module 104 is located in a timely and sufficient manner, which plays an important role in suppressing the thermal runaway state in an early stage and preventing the thermal runaway from further expansion, thereby ensuring the safety of using the integrated power storage device 100.

[0030] The first battery management control board 126 is electrically connected to the first battery module 104 and is used to monitor battery status information of the first battery module 104. The first battery management control board 126 may be equipped with a battery management system (BMS). Referring to FIGS. 3 and 4 , the first battery box case 110 and the heat sink case 112 are assembled in the front-to-rear direction, with the first battery box case 110 at the front and the heat sink case 112 at the rear, and the first battery module 104, the first battery management control board 126, and the inverter circuit board 106 are sequentially arranged in the front-to-rear direction within the integrated device casing 102, which is advantageous for miniaturizing the integrated power storage device 100.

[0031] In some embodiments, the first fire protection module 108 is a sourceless auto-ignition fire protection module.

[0032] Therefore, the integrated power storage device 100 is more suitable for balcony solar power storage products with small electric capacity.

[0033] Specifically, the sourceless automatic combustion fire-fighting module may be a fire-fighting module that does not have an independent power source and does not require a power supply, but instead releases a fire-extinguishing agent when a thermal runaway state occurs in the integrated power storage device 100. Therefore, even if the integrated power storage device 100 is equipped with the first fire-fighting module 108, the first fire-fighting module 108 does not essentially consume the power of the integrated power storage device 100, ensuring the long-term power storage and power supply capabilities of the integrated power storage device 100, and is more suitable for balcony solar power storage products with small electrical capacity.

[0034] In some embodiments, the trigger mechanism 116 includes a passive trigger mechanism, which includes any one of a temperature detector, a smoke detector, and a barometric pressure detector. This allows the triggering of the firefighting function to be realized without consuming power from the integrated power storage device 100.

[0035] Specifically, in one embodiment, the passive trigger mechanism can be self-triggered based on a physical / chemical mechanism, which does not require a power supply and does not consume the power consumption of the integrated power storage device 100, ensuring more power for the user to use.

[0036] In one embodiment, the passive trigger mechanism is self-triggered based on a physical mechanism. The physical self-triggering fire extinguishing mechanism is a purely mechanical emergency fire extinguishing technology that does not rely on power or control systems, and mainly uses the physical properties of the material itself (e.g., heat-sensing effect, pressure change, etc.) to automatically detect fire and release extinguishing agent.

[0037] Specifically, the physical mechanism may include, but is not limited to, a heat-sensitive trigger mechanism and a pressure-linked trigger mechanism. The heat-sensitive trigger mechanism means that when the temperature of the fire detection area 120 is equal to or higher than a predetermined temperature, the high temperature causes the trigger mechanism 116 to generate a trigger signal, which in turn causes the release mechanism 118 to release fire extinguishing agent into the chamber where the first battery module 104 is located. Optionally, in the heat-sensitive trigger mechanism, the passive trigger mechanism may include a heat-sensitive wire 130, which may be disposed in the fire detection area 120. When the temperature of the fire detection area 120 is equal to or higher than the melting temperature of the heat-sensitive wire 130, the release mechanism 118 responds to the trigger signal from the trigger mechanism 116 to release fire extinguishing agent into the chamber where the first battery module 104 is located.

[0038] The pressure-linked trigger mechanism may refer to a mechanism in which, when the pressure in the fire detection area 120 exceeds a predetermined pressure, the high pressure triggers the trigger mechanism 116 to generate a trigger signal, which then causes the release mechanism 118 to release extinguishing agent into the chamber where the first battery module 104 is located. Optionally, in the pressure-linked trigger mechanism, the passive trigger mechanism may include a mechanical relief valve, which ejects high-pressure gas to the outside when the single cell 114 experiences thermal runaway. When the pressure exceeds a predetermined pressure, the valve of the mechanical relief valve automatically opens and interacts with the release mechanism 118 to release extinguishing agent into the chamber where the first battery module 104 is located.

[0039] In one embodiment, the passive trigger mechanism is self-triggered based on a chemical mechanism. A chemical self-triggering fire-fighting mechanism is a technology that utilizes the physical and chemical properties of a material itself (e.g., heat-sensitive decomposition, gas generation through a chemical reaction) to automatically detect a fire and release a fire extinguishing agent. Specifically, the fire-fighting system is activated through the autonomous reaction of chemicals under high temperatures or certain conditions, without the need for external power or control system intervention.

[0040] Specifically, the chemical self-triggering mechanism can include a heat-sensitive polymer detonation mechanism and a chemical decomposition gas generation drive. In the heat-sensitive polymer detonation mechanism, the passive trigger mechanism can include a fire detection tube, in which a low-melting-point copolymer (e.g., ethylene-vinyl acetate) is installed. The fire detection tube is installed in the fire detection area 120. When the temperature of the fire detection area 120 exceeds a predetermined temperature (e.g., 72°C-90°C), the polymer molecular chains break and soften, causing the pressure of the internal drive gas (e.g., nitrogen) to break through the tube wall and cause a directional explosion. The explosive instantaneous drive fire extinguishing agent is precisely sprayed through the cracks to the heat source point.

[0041] In the case of chemical decomposition gas generation drive, the passive trigger mechanism may include a gas generant. The gas generant is added to the fire extinguishing agent storage chamber as a solid gas generant (e.g., nitrocellulose). When heat generated by the thermal explosion is transferred to the fire extinguishing agent storage chamber, the gas generant rapidly decomposes, releasing a large amount of gas (e.g., CO2 / N2), which causes the fire extinguishing agent to be ejected at a high speed.

[0042] The passive trigger mechanism includes any one of a temperature detector, a smoke detector, and an air pressure detector, thereby realizing a passive trigger firefighting function based on any one of temperature, smoke, and air pressure.

[0043] Specifically, in one embodiment, the passive trigger mechanism includes a temperature detector, which may be disposed in the fire detection area 120 and used to detect the temperature of the fire detection area 120. When the temperature of the fire detection area 120 reaches or exceeds a predetermined temperature, the high temperature causes the passive trigger mechanism to generate a trigger signal, which causes the release mechanism 118 to release the extinguishing agent into the chamber in which the first battery module 104 is located.

[0044] In one embodiment, the passive trigger mechanism includes a smoke detector, which can be disposed in the fire detection area 120 and used to detect smoke density in the fire detection area 120. When the smoke density in the fire detection area 120 reaches or exceeds a predetermined density, the high density of smoke causes the passive trigger mechanism to generate a trigger signal, which causes the release mechanism 118 to release fire extinguishing agent into the chamber in which the first battery module 104 is located.

[0045] In one embodiment, the passive trigger mechanism includes an air pressure detector, which may be disposed in the fire detection area 120 and is used to detect the magnitude of the air pressure in the fire detection area 120. When the air pressure in the fire detection area 120 reaches or exceeds a predetermined air pressure, the high air pressure causes the passive trigger mechanism to generate a trigger signal, which causes the release mechanism 118 to release the extinguishing agent into the chamber in which the first battery module 104 is located.

[0046] In some embodiments, the temperature detector is a flexible temperature detector, and combining FIG. 6 , the flexible temperature detector includes a heat-sensitive wire 130, and the heat-sensitive wire 130 is placed in the fire detection area 120, and when the temperature of the fire detection area 120 is equal to or greater than the combustion temperature of the heat-sensitive wire 130, it will burn and further trigger the first fire module 108 to release the fire extinguishing agent through the release mechanism 118.

[0047] This allows for convenient placement of the temperature detector.

[0048] Specifically, since the temperature detector is a flexible temperature detector and its shape can be adjusted according to the installation area, the temperature detector can be installed in the fire detection area 120 of the integrated power storage device 100 by deforming the temperature detector without changing the internal space of the integrated power storage device 100 or without significantly changing the layout of the internal space of the integrated power storage device 100, and therefore no additional installation space needs to be secured, which is advantageous for maintaining the compactness of the integrated power storage device 100. Flexible temperature detectors are more applicable to products where space is very limited, such as balcony power storage.

[0049] For example, the flexible temperature detector may be bent according to the internal space of the power storage integrated device 100 and placed in the original internal space of the power storage integrated device 100, so that the flexible temperature detector can be installed in the fire detection area 120 without providing additional space for the flexible temperature detector.

[0050] The flexible temperature detector includes a heat-sensitive wire 130, which will trigger combustion when the temperature of the heat-sensitive wire 130 is too high, which is simple and efficient and more suitable for balcony energy storage products.

[0051] Specifically, when the temperature of the fire detection area 120 is equal to or higher than the combustion temperature of the heat-sensitive wire 130, the heat-sensitive wire 130 will burn, further triggering the first fire module 108 to release the fire extinguishing agent via the release mechanism 118.

[0052] In one embodiment, when the heat-sensitive wire 130 burns, the heat generated by the combustion is transferred to the fire extinguishing agent reservoir, activating the fire extinguishing agent, and the release mechanism 118 can release the fire extinguishing agent into the chamber in which the first battery module 104 is located.

[0053] In some embodiments, combining FIG. 6, a fiberglass tube 132 is placed around the outside of the heat-sensitive wire 130 .

[0054] Therefore, the glass fiber tube 132 can provide protection such as mechanical stress buffering, chemical corrosion prevention, and breakage prevention for the heat-sensitive wire 130, and ensure the trigger signal is transmitted in a timely manner.

[0055] Specifically, the integrated power storage device 100 may need to be transported from a factory, store, etc. to a user's home. During the transportation and carrying process, the integrated power storage device 100 vibrates, generating mechanical stress. The heat-sensitive wire 130 is covered with a glass fiber tube 132, which buffers the mechanical stress received by the heat-sensitive wire 130, thereby preventing the heat-sensitive wire 130 from being broken by the mechanical stress and thereby preventing the passive fire protection function from being invalidated to some extent.

[0056] When the integrated power storage device 100 is used outdoors for a long period of time (for example, on a balcony), the heat-sensitive wire 130 may be subject to chemical corrosion and breakage due to factors such as the outdoor environmental temperature and humidity. The heat-sensitive wire 130 is covered with a glass fiber tube 132, which can isolate the heat-sensitive wire 130 from the external environment, thereby preventing the heat-sensitive wire 130 from being chemically corroded and breaking, and thus preventing the passive fire protection function from being lost, to some extent.

[0057] From the above, it can be ensured that when the fire detection area 120 meets the fire trigger condition, the heat-sensitive wire 130 can be triggered and transmit the trigger signal in a timely manner.

[0058] Specifically, in one embodiment, the fire detection region 120 is located inside the first battery module 104. When a thermal runaway condition occurs inside the first battery module 104, heat is transferred to the trigger mechanism 116 inside the first battery module 104, causing the trigger mechanism 116 to generate a trigger signal in a timely manner, which causes the release mechanism 118 to release a fire extinguishing agent into the chamber where the first battery module 104 is located, thereby suppressing the onset of the thermal runaway condition and preventing the thermal runaway condition from escalating.

[0059] 3, in one embodiment, the fire detection area 120 is located in the electrode area of ​​the first battery module 104, which further improves the response speed of the trigger mechanism 116.

[0060] Specifically, the first battery module 104 includes a plurality of cell units 114, each of which includes a cell body 134, a positive electrode 136, and a negative electrode 138. In one embodiment, combining FIG. 7 , the positive electrode 136 and the negative electrode 138 are located at opposite ends of the cell body 134, respectively, and the electrode area may refer to the surface of the cell unit 114 on which the positive electrode 136 is located and the surface of the cell unit 114 on which the negative electrode 138 is located. In one embodiment, the positive electrode 136 and the negative electrode 138 are located at the same end of the cell body 134, and the electrode area may refer to the surface of the cell unit 114 on which the positive and negative electrodes 138 are located.

[0061] When the integrated energy storage device 100 is operating, the cell unit 114 is charged or discharged. A current flows between the positive electrode 136 and the negative electrode 138, and the positive electrode 136 and the negative electrode 138 generate a large amount of heat. When a thermal runaway state occurs in the cell unit 114, the temperatures of the positive electrode 136 and the negative electrode 138 are usually high. Because the fire detection area 120 is the electrode area of ​​the first battery module 104, the heat generated during the thermal runaway state can be promptly and quickly transferred to the trigger mechanism 116, causing the trigger mechanism 116 to generate a trigger signal, and the release mechanism 118 to promptly release a fire extinguishing agent into the chamber where the first battery module 104 is located.

[0062] The cell unit 114 further includes an explosion-proof valve 140, which is typically provided on the side of the cell body 134 where the electrodes are located. When a thermal runaway condition occurs in the cell unit 114, the explosion-proof valve 140 may eject a high-temperature, high-pressure substance, which causes the trigger mechanism 116 to quickly respond and generate a trigger signal.

[0063] 3 and 4 , in some embodiments, the integrated power storage device 100 further includes a first battery management control board 126, which is electrically connected to the first battery module 104 and used to monitor battery status information of the first battery module 104. The trigger mechanism 116 includes a manual trigger mechanism, which is electrically connected to the first battery management control board 126. When the first battery management control board 126 monitors that the battery status information indicates a thermal runaway state, it sends a control signal to the manual trigger mechanism. In response to the control signal, the manual trigger mechanism further triggers the first fire module 108 to release a fire extinguishing agent via the release mechanism 118.

[0064] This makes it possible to realize a proactive trigger system for the integrated power storage device 100.

[0065] Optionally, the first battery management control board 126 is fixedly installed within the heat sink case 112 via a bracket board 142. The bracket board 142 is located between the first battery management control board 126 and the inverter circuit board 106. The bracket board 142 can block the heat generated by the inverter circuit board 106 from being transferred to the first battery management control board 126, thereby avoiding or reducing to some extent the adverse effects of the heat from the inverter circuit board 106 on the first battery management control board 126.

[0066] The energy storage integrated device 100 further includes a collector member and a sampling member, and the collector member is electrically connected to the plurality of cells 114, thereby forming a series, parallel, or hybrid electrical connection between the plurality of cells 114. The sampling member can be connected to the collector member and the first battery management control board 126, and the first battery management control board 126 monitors battery status information of the first battery module 104 through the sampling member. The battery status information includes, but is not limited to, current, voltage, temperature, etc.

[0067] In one embodiment, if the current is equal to or greater than a predetermined current, the battery status information may indicate a thermal runaway state. In one embodiment, if the temperature is equal to or greater than a predetermined temperature, the battery status information may indicate a thermal runaway state. The first battery management control board 126 sends a control signal to the active trigger mechanism.

[0068] The active trigger mechanism is electrically connected to the first battery management control board 126, and the active trigger mechanism receives a control signal sent by the first battery management control board 126, and in response to the received control signal, triggers the first fire module 108 to release extinguishing agent via the release mechanism 118 into the chamber in which the first battery module 104 is located.

[0069] In some embodiments, the active trigger mechanism is an electrical trigger, the control signal is an electrical activation signal, and the electrical activation signal includes a current or voltage signal generated when switching from a closed state to a blocked state, or a current or voltage signal generated when switching from a blocked state to a closed state.

[0070] This causes the electrical activation signal to cause the active trigger mechanism to trigger the first fire extinguishing module 108 to release the extinguishing agent via the release mechanism 118 .

[0071] Specifically, the electrical trigger can be provided within the module body of the first fire module 108 and connected to the dry node of the first battery management control board 126 via a wire harness 144 .

[0072] In one embodiment, the first battery management control board 126 includes a detection circuit. Optionally, when the battery status information indicates a non-thermal runaway state, the detection circuit is in a closed state, and when the battery status information indicates a thermal runaway state, the detection circuit can be switched from the closed state to a cut-off state, causing the first battery management control board 126 to output a current or voltage signal.

[0073] Optionally, when the battery status information is in a non-thermal runaway state, the detection circuit is in a cut-off state, and when the battery status information is in a thermal runaway state, the detection circuit can be switched from the cut-off state to a closed state, thereby causing the first battery management control board 126 to output a current or voltage signal.

[0074] When the battery status information indicates a thermal runaway state, the first battery management control board 126 transmits an electrical activation signal to the electrical trigger via the wire harness 144, and the electrical trigger can trigger the first fire module 108 to release fire extinguishing agent via the release mechanism 118 into the chamber where the first battery module 104 is located.

[0075] Optionally, in combination with FIG. 5, a connector 145 is provided on the module body of the first fire module 108, and the electrical trigger can be connected to a wire harness 144 via the connector 145.

[0076] In some embodiments, combining FIG. 6, a fiberglass tube 132 is placed around the outside of a wire harness 144 connected to an electrical trigger.

[0077] Therefore, the glass fiber tube 132 can provide protection such as mechanical stress buffering, chemical corrosion prevention, and breakage prevention for the wire harness 144, and ensure that the electrical activation signal can be transmitted in a timely manner.

[0078] Specifically, the integrated power storage device 100 may need to be transported from a factory, a store, etc. to a user's home. During the transportation and carrying process, the integrated power storage device 100 vibrates, generating mechanical stress. The glass fiber tube 132 is installed outside the wire harness 144 connected to the electrical trigger, and the glass fiber tube 132 buffers the mechanical stress received by the wire harness 144, thereby preventing to some extent the wire harness 144 from breaking due to the mechanical stress and the loss of its active fire-fighting function.

[0079] When the integrated power storage device 100 is used outdoors for a long period of time (for example, on a balcony), the wire harness 144 may be subject to chemical corrosion and breakage due to factors such as the outdoor environmental temperature and humidity. The exterior of the wire harness 144 is covered with a glass fiber tube 132, which can isolate the wire harness 144 from the external environment of the wire harness 144, thereby preventing the wire harness 144 from being broken due to chemical corrosion and losing its active fire protection function to some extent.

[0080] As a result, when the battery status information indicates a thermal runaway state, the wire harness 144 can transmit an electrical activation signal to the electrical trigger in a timely manner.

[0081] In some embodiments, combining FIG. 5, the module body of the first fire protection module 108 has a flat shape.

[0082] This eliminates the need to provide additional space in the module body of the first fire protection module 108, or the need to provide excessive additional space, which is advantageous in maintaining the compactness of the integrated power storage device 100.

[0083] Specifically, the module body of the first fire protection module 108 may be a first module body 108a, and a fire extinguishing agent storage chamber may be provided within the module body of the first fire protection module 108. The release mechanism 118 may be provided on the surface of the module body, and the trigger mechanism 116 may be connected to the module body. The module body of the first fire protection module 108 occupies a large proportion of the total volume of the first fire protection module 108. When the first fire protection module 108 is installed, a large amount of space is required for accommodating the module body. The first module body 108a has a flat shape, and the module body may be installed in the original flat space within the integrated device housing 102 or in the original flat space after being slightly expanded, which is advantageous for maintaining the compactness of the integrated power storage device 100.

[0084] In some embodiments, the module body of the first fire protection module 108 is fixed to the inner wall surface of the first battery box case 110.

[0085] This allows the module body of the first fire protection module 108 to be located close to the first battery module 104, allowing the first fire protection module 108 to respond quickly to a thermal runaway condition of the first battery module 104.

[0086] Specifically, the first battery module 104 is installed in the first battery box case 110, the inner wall surface of the first battery box case 110 faces the first battery module 104, and the module body of the first fire-fighting module 108 is fixed to the inner wall surface of the first battery box case 110, so that the module body of the first fire-fighting module 108 can be closer to the first battery module 104. When the fire-fighting detection area 120 meets the fire-fighting trigger condition, the trigger mechanism 116 can generate a trigger signal in a timely manner, which can allow the fire-extinguishing agent released from the release mechanism 118 to reach the first battery module 104 more quickly and suppress the thermal runaway state more quickly.

[0087] The module body of the first fire protection module 108 can be fixed to the inner wall surface of the first battery box case 110 by a method including, but not limited to, screws, snaps, and the like.

[0088] In some embodiments, the distance between the first battery module 104 and the inner wall surface selected for mounting the module body of the first firefighting module 108 is greater than the mounting distance of the module body of the first firefighting module 108 .

[0089] This allows the fire extinguishing agent to be released more smoothly and efficiently into the chamber in which the first battery module 104 is located.

[0090] Specifically, the release mechanism 118 may be mounted on the surface of the module body of the first fire protection module 108. To improve the operational efficiency of the first fire protection module 108, an installation distance requirement is set for the module body of the first fire protection module 108, allowing the release mechanism 118 to more smoothly and efficiently release the extinguishing agent into the chamber in which the first battery module 104 is located. To this end, the distance between the inner wall selected for mounting the module body of the first fire protection module 108 and the first battery module 104 is greater than the installation distance of the module body of the first fire protection module 108, allowing the extinguishing agent to be more smoothly and efficiently released into the chamber in which the first battery module 104 is located. In one example, the installation distance requirement is set such that there are no obstacles within a 0.05 meter range of the release mechanism 118 (e.g., the nozzle 146).

[0091] In some embodiments, combining FIG. 5, the release mechanism 118 comprises a nozzle 146 , the nozzle 146 is located on the outer shell of the first fire protection module 108 , and the nozzle 146 is provided near the first battery module 104 .

[0092] This can improve the extinguishing accuracy of the fire extinguishing agent.

[0093] Specifically, in one embodiment, the module body of the first fire protection module 108 is a flat cylindrical body, and the nozzle 146 is provided on the circumferential side of the outer shell of the module body. The central axis of the nozzle 146 is parallel to the length of the cell body 134 of the single cell unit 114, and the nozzle 146 is provided close to the first battery module 104.

[0094] In one embodiment, an angle may be formed between the central axis of the nozzle 146 and the length of the cell body 134 of the cell unit 114, and the angle may be 90 degrees or an acute angle.

[0095] As can be appreciated, the present application is not limited to the shape of the module body of the first fire protection module 108 .

[0096] In some embodiments, combining Figures 3 and 4, the integrated equipment housing 102 further includes an intermediate partition plate 148, which is used to divide the integrated equipment housing 102 into a first chamber 150 and a second chamber 152, where the first chamber 150 is surrounded by the first battery box case 110 and the intermediate partition plate 148, and the second chamber 152 is surrounded by the heat sink case 112 and the intermediate partition plate 148.

[0097] As a result, after the extinguishing agent is released, the intermediate partition plate 148 collects the flame-retardant material in the first chamber 150, maintains the extinguishing agent concentration in the first chamber 150 above a certain threshold within a certain period of time, and prioritizes flame-retardant treatment of the most dangerous first battery module 104.The flame-retardant material then diffuses to other components in the second chamber 152 through the gap between the intermediate partition plate 148 and the integrated equipment housing 102 and / or the wire groove openings in the intermediate partition plate 148, thereby achieving a better fire-extinguishing effect.

[0098] Specifically, the intermediate partition plate 148 may serve to fix the first battery module 104. After the intermediate partition plate 148 is attached and fixed to the first battery box case 110, it applies force toward the first battery module 104 to prevent the first battery module 104 from shaking. Optionally, one side of the first battery box case 110 facing the heat sink case 112 may be an open side, and the intermediate partition plate 148 may be provided on the open side, thereby surrounding the first battery box case 110 to form a first chamber 150. A gap is formed between the intermediate partition plate 148 and the inner wall surface of the first battery box case 110. A wire groove opening is formed in the intermediate partition plate 148, and the wire groove opening is used to insert connecting wires between the first battery module 104 and the first battery management control board 126. When the integrated energy storage device 100 is operating normally, the intermediate partition plate 148 can separate the first battery module 104 and the first battery management control board 126, thereby reducing or avoiding adverse effects on the first battery management control board 126 caused by heat generated by the first battery module 104.

[0099] The first battery module 104 is located in the first chamber 150, and the first battery management control board 126 and the inverter circuit board 106 are both located in the second chamber 152. When the fire detection area 120 meets the fire trigger condition, the trigger mechanism 116 generates a trigger signal, and the release mechanism 118 releases a fire extinguishing agent into the first chamber 150 in response to the trigger signal. The released fire extinguishing agent preferentially collects in the first chamber 150, making the first battery module 104 fire-retardant. The intermediate partition plate 148 can extend the retention time of the fire extinguishing agent in the chamber where the first battery module 104 is located. After the amount of fire extinguishing agent in the first chamber 150 increases, the fire extinguishing agent can diffuse into the second chamber 152 through the gap between the intermediate partition plate 148 and the inner wall surface of the first battery box case 110 and / or through the wire groove openings in the intermediate partition plate 148. By treating the first battery management control board 126 and the inverter circuit board 106 located in the second chamber 152 with flame retardant, a better fire extinguishing effect can be achieved.

[0100] Here, the first fire protection module 108 is located within the first chamber 150 .

[0101] This allows the release mechanism 118 to release extinguishing agent directly into the first chamber 150 when the fire detection area 120 meets the fire trigger condition, improving fire extinguishing efficiency.

[0102] Specifically, the first fire extinguishing module 108 is located within the first chamber 150, and the release mechanism 118 is also located within the first chamber 150. When the fire extinguishing detection area 120 meets a fire extinguishing trigger condition, the trigger mechanism 116 can generate a trigger signal. In response to the trigger signal, the release mechanism 118 directly releases a fire extinguishing agent into the first chamber 150. The fire extinguishing agent first contacts the first battery module 104, making the first battery module 104 flame retardant, thereby shortening the contact time between the extinguishing agent and the first battery module 104 after being sprayed and improving fire extinguishing efficiency.

[0103] In some embodiments, combining FIG. 1 and FIG. 2, the heat sink case 112 is provided with a breathing valve 154 .

[0104] This ensures sufficient fire extinguishing effect.

[0105] Specifically, in the related art, the breather valve is used to balance the air pressure inside and outside the battery box to prevent a sudden increase in internal pressure and an explosion during thermal runaway of a single cell. However, if the breather valve 154 is located in the first battery box case 110 after the fire extinguishing agent is released, the fire extinguishing agent will leak out quickly, reducing the fire extinguishing efficiency.

[0106] In this embodiment, 1) the position of the breathing valve 154 is moved and the breathing valve 154 is provided on the heat sink case 112 away from the chamber in which the first battery module 104 is located, thereby avoiding the problem that part of the released fire extinguishing agent directly enters the second chamber 152, reducing the fire extinguishing agent in the first chamber 150 and reducing the fire extinguishing effect. 2) Addition of air pressure buffering structure: An intermediate partition plate 148 is installed between the first battery box case 110 and the heat sink case 112 to buffer and obstruct the airflow passage. The released fire extinguishing agent cannot enter the second chamber 152 unless it diffuses into the gap between the first battery box case 110 and the intermediate partition plate 148 and / or the wire groove opening of the intermediate partition plate 148, thereby extending the retention time of the fire extinguishing agent in the first chamber 150. The above design extends the retention time of the fire extinguishing agent in the first chamber 150 and increases the dosage, ensuring sufficient fire extinguishing effect.

[0107] In some embodiments, combining FIGS. 1 to 4, the heat sink case 112 is further provided with a photovoltaic power generation connection terminal 156, a grid connection terminal 158, and an AC load output terminal 160.

[0108] This reduces the use of wires and other materials, thereby reducing costs.

[0109] Specifically, the inverter circuit board 106 can be used as a circuit board for the energy storage integrated device 100 to output and input electric power. The photovoltaic power generation connection terminals 156, the grid connection terminals 158, and the AC load output terminals 160 are provided on the heat sink case 112, which can reduce the distance between the connection terminals and the inverter circuit board 106, thereby reducing the use of wires and cutting costs. At the same time, the connection terminals are close to the inverter circuit board 106, which makes it convenient to connect the connection terminals to the inverter circuit board 106.

[0110] A solar power generation panel can be connected to the solar power generation connection terminal 156, and DC power generated by the solar power generation panel can be input to the inverter circuit board 106 via the solar power generation connection terminal 156. The inverter circuit board 106 boosts and converts the voltage of the DC power to a voltage suitable for charging the first battery tube module and / or the storage expansion pack 200, and the first battery management control board 126 can use the converted voltage to charge the first battery module 104 and / or the storage expansion pack 200.

[0111] The grid connection terminal 158 can be connected to a power grid, connecting the power storage integrated device 100 to the power grid and realizing two-way power flow and smart dispatch. The AC load output terminal 160 can be connected to an AC load, and the inverter circuit board 106 can convert the DC power output from the first battery module 104 or the DC power output from the power storage expansion pack 200 into AC power suitable for powering the AC load.

[0112] In the embodiment of the present application, the connection terminals are all protruding portions. In terms of design, the widthwise design of the heat sink case 112 and the length of the connection terminals should not significantly exceed the widthwise design of the first battery box case 110, because the connection terminals will be weakly stressed and may break under force. If the connection terminals protrude too much, they may break during transportation and handling. Based on this consideration, the heat sink case 112 is compressed in the widthwise direction after ensuring the space for the connection terminals. The inverter circuit board 106 fixed to the heat sink case 112 is naturally compressed in the widthwise direction. However, to ensure the functional integrity of the inverter circuit board 106 and electrical insulation requirements such as EMC, the layout area required for the components cannot be excessively compressed. That is, the entire area of ​​the inverter circuit board 106 cannot be compressed. Therefore, after the widthwise compression, the heightwise expansion is required.

[0113] Based on the above design considerations, after the heat sink case 112 is expanded in the vertical height direction, the first battery box case 110 has a shape and size suitable for the heat sink case 112, and the first battery box case 110 has redundant space in the vertical direction. Since the first battery module 104 is usually fixed to the lower inner wall surface of the first battery box case 110, in the embodiment shown in Figure 3, the mounting position of the module body of the first fire protection module 108 is preferably fixed to the upper inner wall surface of the first battery box case 110. As can be understood, in other embodiments, the module body of the first fire protection module 108 may be mounted on inner wall surfaces other than the upper and lower inner wall surfaces of the first battery box case 110.

[0114] Optionally, the first battery module 104 includes a first battery holder 162 and a plurality of cell units 114, and the first battery holder 162 secures the plurality of cell units 114 to form the first battery module 104. The module body of the first fire module 108 faces one side, exposing the first battery holder 162 and the cell units 114.

[0115] In some embodiments, the extinguishing agent is an aerosol extinguishing agent.

[0116] This allows the fire extinguishing agent to be stored at normal pressure, and there is no need to lay a piping network; the aerosol fire extinguishing agent is non-toxic, non-corrosive, does not destroy the ozone layer, and is green and environmentally friendly.

[0117] Alternatively, the aerosol fire extinguishing agent may be a thermal aerosol fire extinguishing agent. The extinguishing mechanism of thermal aerosols is primarily characterized by two mechanisms: one is the cooling effect caused by endothermic decomposition, and the other is chemical suppression in the gas and solid phases, which work in concert with each other. In addition, the gas phase components in the aerosol fire extinguishing agent product also play a supporting role.

[0118] Specifically, (1) Cooling and fire extinguishing effect of endothermic decomposition: The cooling effect of the thermal aerosol fire extinguishing agent mainly depends on the endothermic decomposition of metal oxides and carbonates. In any fire, the heat released within a short period is limited. If the solid particles in the aerosol can be released from the fire source and absorb part of the heat within a short period, the temperature of the flame will decrease, and the heat radiated to the combustion surface and the heat required to decompose the vaporized combustible molecules into radicals will decrease. As a result, the combustion reaction will be suppressed to a certain extent.

[0119] (2) Gas-phase chemical inhibition effect Due to the action of heat, the vaporized metal ions decomposed by the thermal aerosol fire extinguishing agent, such as Sr, K, Mg or the cations that have lost electrons, exist in the form of vapor and undergo multiple chain reactions with the active groups H, OH and O during combustion. Hereinafter, taking Sr as an example, Sr + 2·OH → Sr(OH)2, Sr + O· → SrO, Sr(OH)2 + 2H· → Sr + 2H2O.

[0120] By repeating this process, a large amount of active groups during combustion are consumed, the concentration decreases, and combustion is suppressed.

[0121] (3) Solid-phase chemical inhibition effect The solid particles in the thermal aerosol fire extinguishing agent can adsorb the chain reaction intermediates OH, H and O, and can catalyze them to be reconstituted into stable molecules, thereby interrupting the branched chain reaction in the combustion process. Hereinafter, taking K as an example, K2O(s) + 2H(g) → 2KOH(s), KOH(s) + OH(g) → KO(s) + H2O(g), K2O(s) + O(g) → 2KO(s), KO(s) + H(g) → KOH.

[0122] In the above fire extinguishing effects, some fire extinguishing mechanisms interact and cooperate with each other. However, the gas transmission effect and the endothermic cooling effect of metal oxides or carbonates only play auxiliary effects, and the main fire extinguishing effect still depends on the chemical inhibition effects of the gas and solid phases.

[0123] When a thermal runaway state occurs in the energy storage integrated device 100, the module body of the first fire-fighting module 108 receives an electrical activation signal or ignites the heat-sensitive wire 130 by an open flame, and the electrical trigger or the heat-sensitive wire 130 burns to activate the aerosol generator in the module body, and the aerosol generator decomposes the chemical coolant by the heat released by the oxidation-reduction reaction, so that the aerosol generator and the coolant can participate in fire extinguishing together.

[0124] 8 to 11 combined, a power storage expansion pack 200 according to an embodiment of the present application is electrically connected to the power storage integrated device 100 and is used to expand the power storage integrated device 100, and the power storage expansion pack 200 includes an expansion pack housing 202, a second battery module 204, and a second fire protection module 206. The expansion pack housing 202 includes a second battery box case 208 and a cover plate 210 that are detachably connected, and the second battery module 204 is fixed in the second battery box case 208, and the cover plate 210 is used to close an attachment opening 212 of the second battery box case 208.

[0125] The second battery module 204 includes a plurality of cells 114 for storing and outputting electrical energy. The second fire protection module 206 is provided within the expansion pack housing 202 and includes a trigger mechanism 116, a fire extinguishing agent storage, and a release mechanism 118. The trigger mechanism 116 is provided in a fire protection detection area 120 within the expansion pack housing 202, and generates a trigger signal when the fire protection detection area 120 meets a fire protection trigger condition. The fire extinguishing agent storage is used to store fire extinguishing agent. The release mechanism 118 releases the fire extinguishing agent into a chamber in which the second battery module 204 is located in response to the trigger signal from the trigger mechanism 116.

[0126] The above-mentioned energy storage expansion pack 200 comprehensively considers the characteristics of consumer energy storage products, carefully designs fire protection solutions for consumer energy storage products, and adopts a built-in fire protection design that is compact, economical, maintenance-free, efficient and reliable, and does not affect the appearance of the energy storage equipment 300.

[0127] Specifically, the power storage expansion pack 200 can expand the power storage integrated device 100, and the power storage expansion pack 200 and the power storage integrated device 100 can constitute a power storage facility 300. In one embodiment, the power storage integrated device 100 can be used alone. In one embodiment, the power storage expansion pack 200 and the power storage integrated device 100 can be used in combination. The power storage integrated device 100 can be used in combination with at least one power storage expansion pack 200, and the present application does not limit the number of power storage expansion packs 200 included in the power storage facility 300.

[0128] The storage expansion pack 200 further includes a second battery management control board 214, which is used to monitor the battery status information of the second battery module 204. The second battery management control board 214 is communicatively connected to the first battery management control board 126, thereby transmitting the battery status information of the second battery module 204 to the first battery management control board 126. The first battery tube circuit board can manage the second battery module 204 through the second battery management control board 214, such as closing, charging, and discharging, based on the battery status information of the second battery module 204.

[0129] Optionally, a second fire protection module 206 is provided within the expansion pack housing 202 in an area adjacent to the second battery module 204 .

[0130] In some embodiments, the second fire protection module 206 is a non-source auto-ignition fire protection module.

[0131] Therefore, the storage expansion pack 200 is more suitable for balcony solar storage products with small electrical capacity.

[0132] Specifically, the sourceless automatic combustion fire-fighting module may be a fire-fighting module that does not have an independent power source and does not require a power supply, but instead releases a fire-extinguishing agent when a thermal runaway state occurs in the power storage expansion pack 200. Therefore, even if the power storage expansion pack 200 is equipped with a second fire-fighting module 206, the second fire-fighting module 206 does not consume the power of the power storage expansion pack 200, ensuring the long-term power storage and power supply capabilities of the power storage expansion pack 200, and is more suitable for balcony solar power storage products with small electrical capacity.

[0133] In some embodiments, the trigger mechanism 116 comprises a passive trigger mechanism, which includes one of a temperature detector, a smoke detector, and a barometric pressure detector.

[0134] This makes it possible to trigger the firefighting function without consuming the power of the power storage expansion pack 200.

[0135] Specifically, in one embodiment, the passive trigger mechanism can be self-triggered based on a physical / chemical mechanism, which does not require a power supply and does not consume power from the power storage expansion pack 200, ensuring more power for the user to use.

[0136] In one embodiment, the passive trigger mechanism is self-triggered based on a physical mechanism. The physical self-triggering fire extinguishing mechanism is a purely mechanical emergency fire extinguishing technology that does not rely on power or control systems, and mainly uses the physical properties of the material itself (e.g., heat-sensing effect, pressure change, etc.) to automatically detect fire and release extinguishing agent.

[0137] Specifically, the physical mechanism may include, but is not limited to, a heat-sensitive trigger mechanism and a pressure-linked trigger mechanism. The heat-sensitive trigger mechanism means that when the temperature of the fire detection area 120 is equal to or higher than a predetermined temperature, the high temperature causes the trigger mechanism 116 to generate a trigger signal, which in turn causes the release mechanism 118 to release the fire extinguishing agent into the chamber where the second battery module 204 is located. Optionally, in the heat-sensitive trigger mechanism, the passive trigger mechanism may include a heat-sensitive wire 130, which may be disposed in the fire detection area 120. When the temperature of the fire detection area 120 is equal to or higher than the melting temperature of the heat-sensitive wire 130, the release mechanism 118 responds to the trigger signal from the trigger mechanism 116 to release the fire extinguishing agent into the chamber where the second battery module 204 is located.

[0138] The pressure-linked trigger mechanism may refer to a mechanism in which, when the pressure in the fire detection area 120 exceeds a predetermined pressure, the high pressure triggers the trigger mechanism 116 to generate a trigger signal, which then causes the release mechanism 118 to release extinguishing agent into the chamber where the first battery module 104 is located. Optionally, in the pressure-linked trigger mechanism, the passive trigger mechanism may include a mechanical relief valve, which ejects high-pressure gas to the outside when the single cell 114 experiences thermal runaway. When the pressure exceeds a predetermined pressure, the valve of the mechanical relief valve automatically opens and interacts with the release mechanism 118 to release extinguishing agent into the chamber where the second battery module 204 is located.

[0139] In one embodiment, the passive trigger mechanism is self-triggered based on a chemical mechanism. A chemical self-triggering fire-fighting mechanism is a technology that utilizes the physical and chemical properties of a material itself (e.g., heat-sensitive decomposition, gas generation through a chemical reaction) to automatically detect a fire and release a fire extinguishing agent. Specifically, the fire-fighting system is activated through the autonomous reaction of chemicals under high temperatures or certain conditions, without the need for external power or control system intervention.

[0140] Specifically, the chemical self-triggering mechanism can include a heat-sensitive polymer detonation mechanism and a chemical decomposition gas generation drive. In the heat-sensitive polymer detonation mechanism, the passive trigger mechanism can include a fire detection tube, in which a low-melting-point copolymer (e.g., ethylene-vinyl acetate) is installed. The fire detection tube is installed in the fire detection area 120. When the temperature of the fire detection area 120 exceeds a predetermined temperature (e.g., 72°C-90°C), the polymer molecular chains break and soften, causing the pressure of the internal drive gas (e.g., nitrogen) to break through the tube wall and cause a directional explosion. The explosive instantaneous drive fire extinguishing agent is precisely sprayed through the cracks to the heat source point.

[0141] In the case of chemical decomposition gas generation drive, the passive trigger mechanism may include a gas generant. The gas generant is added to the fire extinguishing agent storage chamber as a solid gas generant (e.g., nitrocellulose). When heat generated by the thermal explosion is transferred to the fire extinguishing agent storage chamber, the gas generant rapidly decomposes, releasing a large amount of gas (e.g., CO2 / N2), which causes the fire extinguishing agent to be ejected at a high speed.

[0142] In one embodiment, the passive triggering mechanism includes one of a temperature detector, a smoke detector, and a barometric pressure detector.

[0143] This allows for a passive firefighting function to be triggered by either temperature, smoke, or air pressure.

[0144] Specifically, in one embodiment, the passive trigger mechanism includes a temperature detector, which may be disposed in the fire detection area 120 and is used to detect the temperature of the fire detection area 120. When the temperature of the fire detection area 120 reaches or exceeds a predetermined temperature, the high temperature causes the passive trigger mechanism to generate a trigger signal, which causes the release mechanism 118 to release the extinguishing agent into the chamber in which the second battery module 204 is located.

[0145] In one embodiment, the passive trigger mechanism includes a smoke detector, which can be disposed in the fire detection area 120 and is used to detect the smoke density in the fire detection area 120. When the smoke density in the fire detection area 120 reaches or exceeds a predetermined density, the high density of smoke causes the passive trigger mechanism to generate a trigger signal, which causes the release mechanism 118 to release the extinguishing agent into the chamber in which the second battery module 204 is located.

[0146] In one embodiment, the passive trigger mechanism includes an air pressure detector, which may be provided in the fire detection area 120 and is used to detect the magnitude of the air pressure in the fire detection area 120. When the air pressure in the fire detection area 120 reaches or exceeds a predetermined air pressure, the high air pressure passive trigger mechanism generates a trigger signal, which causes the release mechanism 118 to release the extinguishing agent into the chamber in which the second fire module 206 is located.

[0147] In some embodiments, the temperature detector is a flexible temperature detector, and combining FIG. 6 , the flexible temperature detector includes a heat-sensitive wire 130, and the heat-sensitive wire 130 is placed in the fire detection area 120, and when the temperature of the fire detection area 120 is equal to or greater than the combustion temperature of the heat-sensitive wire 130, it will burn and further trigger the second fire module 206 to release the fire extinguishing agent through the release mechanism 118.

[0148] This allows for convenient placement of the temperature detector.

[0149] Specifically, because the temperature detector is a flexible temperature detector, the temperature detector can be installed in any fire detection area 120 of the power storage expansion pack 200 without changing or excessively changing the internal space of the power storage expansion pack 200, which is advantageous in preventing the temperature detector from occupying the internal space of the power storage expansion pack 200 and maintaining the compactness of the power storage expansion pack 200. Flexible temperature detectors are more applicable to products where space is very limited, such as balcony power storage.

[0150] For example, the flexible temperature detector may be bent according to the internal space of the storage expansion pack 200 and placed in the original internal space of the storage expansion pack 200, so that the flexible temperature detector can be installed in the fire detection area 120 without providing additional space for the flexible temperature detector.

[0151] The flexible temperature detector includes a heat-sensitive wire 130, which will trigger combustion when the temperature of the heat-sensitive wire 130 is too high, which is simple and efficient and more suitable for balcony energy storage products.

[0152] Specifically, when the temperature of the fire detection area 120 is equal to or higher than the combustion temperature of the heat-sensitive wire 130, the heat-sensitive wire 130 will burn, further triggering the second fire module 206 to release the fire extinguishing agent via the release mechanism 118.

[0153] In one embodiment, when the heat-sensitive wire 130 burns, the heat generated by the combustion is transferred to the fire extinguishing agent reservoir, activating the fire extinguishing agent, and the release mechanism 118 can release the fire extinguishing agent into the chamber in which the second battery module 204 is located.

[0154] In some embodiments, combining FIG. 6, a fiberglass tube 132 is placed around the outside of the heat-sensitive wire 130 .

[0155] Therefore, the glass fiber tube 132 can provide protection such as mechanical stress buffering, chemical corrosion prevention, and breakage prevention for the heat-sensitive wire 130, and ensure the trigger signal is transmitted in a timely manner.

[0156] Specifically, the power storage expansion pack 200 may need to be transported from a factory, store, etc. to a user's home. During the transportation and carrying process, the power storage expansion pack 200 vibrates, generating mechanical stress. The heat-sensitive wire 130 is covered with a glass fiber tube 132, which buffers the mechanical stress received by the heat-sensitive wire 130, thereby preventing the heat-sensitive wire 130 from breaking due to the mechanical stress and thereby preventing the passive fire protection function from being invalidated to some extent.

[0157] When the power storage expansion pack 200 is used outdoors for a long period of time (for example, on a balcony), the heat-sensitive wire 130 may be subject to chemical corrosion and breakage due to factors such as the outdoor environmental temperature and humidity. The heat-sensitive wire 130 is covered with a glass fiber tube 132, which can isolate the heat-sensitive wire 130 from the external environment, thereby preventing the heat-sensitive wire 130 from being chemically corroded and breaking, and thus preventing the passive fire protection function from being lost, to some extent.

[0158] From the above, it can be ensured that when the fire detection area 120 meets the fire trigger condition, the heat-sensitive wire 130 can be triggered and transmit the trigger signal in a timely manner.

[0159] In some embodiments, combining FIG. 9 and FIG. 10, the fire detection area 120 is located inside the second battery module 204 or in the electrode area of ​​the second battery module 204.

[0160] This allows the trigger mechanism 116 to respond to a thermal runaway condition in the second battery module 204 in a timely manner.

[0161] Specifically, in one embodiment, the fire detection area 120 is located inside the second battery module 204. When a thermal runaway condition occurs inside the second battery module 204, heat is transferred to the trigger mechanism 116 inside the second battery module 204, causing the trigger mechanism 116 to generate a trigger signal in a timely manner, and causing the release mechanism 118 to release a fire extinguishing agent into the chamber where the second battery module 204 is located, thereby suppressing the initial stage of the thermal runaway condition and preventing the thermal runaway condition from escalating.

[0162] In one embodiment, the fire detection area 120 is located in the electrode area of ​​the second battery module 204 .

[0163] This further improves the response speed of the trigger mechanism 116.

[0164] Specifically, the second battery module 204 includes a plurality of cell units 114, each of which includes a cell body 134, a positive electrode 136, and a negative electrode 138. In one embodiment, referring to FIG. 7 , the positive electrode 136 and the negative electrode 138 are located at opposite ends of the cell body 134, respectively, and the electrode area may refer to the side of the cell unit 114 where the positive electrode 136 is located and the side where the negative electrode 138 is located. In one embodiment, the positive electrode 136 and the negative electrode 138 are located at the same end of the cell body 134, and the electrode area may refer to the side of the cell unit 114 where the positive and negative electrodes 138 are located.

[0165] When the power storage expansion pack 200 operates, the cells 114 are charged or discharged. Current flows between the positive and negative electrodes 136 and 138, generating a large amount of heat. When a thermal runaway state occurs in the cells 114, the temperatures of the positive and negative electrodes 136 and 138 are usually high. Because the fire detection area 120 is the electrode area of ​​the second battery module 204, heat generated during the thermal runaway state is quickly and timely transmitted to the trigger mechanism 116, causing the trigger mechanism 116 to generate a trigger signal, which in turn causes the release mechanism 118 to timely release a fire extinguishing agent into the chamber where the second battery module 204 is located.

[0166] The cell unit 114 further includes an explosion-proof valve 140, which is typically provided on the side of the cell body 134 where the electrodes are located. If a thermal runaway condition occurs in the cell unit 114, the explosion-proof valve 140 may eject a high-temperature, high-pressure substance, which allows the trigger mechanism 116 to quickly respond and generate a trigger signal.

[0167] In some embodiments, a thermal simulation test is performed on the expansion pack housing 202 of the power storage expansion pack 200, and the thermal simulation test determines a heat accumulation area within the integrated equipment housing 102 while the power storage expansion pack 200 is in operation, and the heat accumulation area is selected as the fire detection area 120. In some examples, the fire detection area 120 may be located elsewhere within the expansion pack housing 202 of the power storage expansion pack 200, or may be determined by empirical methods or the like.

[0168] 9 to 11 , in some embodiments, the power storage expansion pack 200 further includes a second battery management control board 214, which is electrically connected to the second battery module 204 and used to monitor battery status information of the second battery module 204. The trigger mechanism 116 includes a manual trigger mechanism, which is electrically connected to the second battery management control board 214. When the second battery management control board 214 monitors that the battery status information indicates a thermal runaway state, it sends a control signal to the manual trigger mechanism. In response to the control signal, the manual trigger mechanism further triggers the second fire module 206 to release fire extinguishing agent via the release mechanism 118.

[0169] This makes it possible to realize a proactive trigger system for the power storage expansion pack 200.

[0170] The power storage expansion pack 200 further includes a current collecting member and a sampling member, and the current collecting member is electrically connected to the plurality of cells 114, thereby forming a series, parallel, or hybrid electrical connection between the plurality of cells 114. The sampling member can be connected to the current collecting member and the second battery management control board 214, and the second battery management control board 214 monitors battery status information of the second battery module 204 through the sampling member. The battery status information includes, but is not limited to, current, voltage, temperature, etc.

[0171] In one embodiment, if the current is equal to or greater than a predetermined current, the battery status information may indicate a thermal runaway state. In one embodiment, if the temperature is equal to or greater than a predetermined temperature, the battery status information may indicate a thermal runaway state. The second battery management control board 214 sends a control signal to the active trigger mechanism.

[0172] The active trigger mechanism is electrically connected to the second battery management control board 214, and the active trigger mechanism receives a control signal sent by the second battery management control board 214, and in response to the received control signal, the trigger second fire module 206 releases the fire extinguishing agent via the release mechanism 118 into the chamber in which the second battery module 204 is located.

[0173] In some embodiments, the active trigger mechanism is an electrical trigger, the control signal is an electrical activation signal, and the electrical activation signal includes a current or voltage signal generated when switching from a closed state to a blocked state, or a current or voltage signal generated when switching from a blocked state to a closed state.

[0174] This causes the electrical activation signal to cause the active trigger mechanism to trigger the second fire extinguishing module 206 to release the extinguishing agent via the release mechanism 118 .

[0175] Specifically, the electrical trigger can be provided within the module body of the second fire module 206 and connected to the dry node of the second battery management control board 214 via the wire harness 144 .

[0176] In one embodiment, the second battery management control board 214 includes a detection circuit. Optionally, when the battery status information indicates a non-thermal runaway state, the detection circuit is in a closed state, and when the battery status information indicates a thermal runaway state, the detection circuit can be switched from the closed state to a cut-off state, causing the second battery management control board 214 to output a current or voltage signal.

[0177] Optionally, when the battery status information is in a non-thermal runaway state, the detection circuit is in a cut-off state, and when the battery status information is in a thermal runaway state, the detection circuit can be switched from the cut-off state to a closed state, thereby causing the second battery management control board 214 to output a current or voltage signal.

[0178] When the battery status information indicates a thermal runaway state, the second battery management control board 214 transmits an electrical activation signal to the electrical trigger via the wire harness 144, and the electrical trigger can trigger the second fire module 206 to release the fire extinguishing agent via the release mechanism 118 into the chamber where the first battery module 104 is located.

[0179] Optionally, in combination with FIG. 5, a connector 145 is provided on the module body of the second fire module 206, and the electrical trigger can be connected to the wire harness 144 via the connector 145.

[0180] In some embodiments, combining FIG. 6, a fiberglass tube 132 is placed around the outside of a wire harness 144 connected to an electrical trigger.

[0181] Therefore, the glass fiber tube 132 can provide protection such as mechanical stress buffering, chemical corrosion prevention, and breakage prevention for the wire harness 144, and ensure that the electrical activation signal can be transmitted in a timely manner.

[0182] Specifically, the power storage expansion pack 200 may need to be transported from a factory, store, etc. to the user's home. During the transportation and carrying process, the power storage expansion pack 200 vibrates, generating mechanical stress. The glass fiber tube 132 is installed outside the wire harness 144 connected to the electrical trigger, and the glass fiber tube 132 prevents the wire harness 144 from breaking due to the mechanical stress, which may result in the loss of the active fire-fighting function.

[0183] When the power storage expansion pack 200 is used outdoors for a long period of time (for example, on a balcony), the wire harness 144 may be subject to chemical corrosion and breakage due to factors such as the outdoor environmental temperature and humidity. The outside of the wire harness 144 is covered with a glass fiber tube 132, which can isolate the wire harness 144 from the external environment of the wire harness 144, thereby preventing the wire harness 144 from being chemically corroded and breaking, and thus preventing the active fire protection function from being lost, to some extent.

[0184] From the above, when the battery status information indicates a thermal runaway state, the wire harness 144 can ensure that the electrical activation signal can be transmitted to the electrical trigger in a timely manner.

[0185] In some embodiments, combining FIG. 5, the module body of the second fire protection module 206 has a flat shape.

[0186] This eliminates the need to provide additional space in the module body of the second fire protection module 206, or to provide excessive additional space, which is advantageous in maintaining the compactness of the power storage expansion pack 200.

[0187] Specifically, the module body of the second fire protection module 206 is the second module body 206a. A fire extinguishing agent storage chamber is provided within the module body of the second fire protection module 206. The release mechanism 118 can be provided on the surface of the module body, and the trigger mechanism 116 is connected to the module body. The module body of the second fire protection module 206 accounts for a large proportion of the total volume of the second fire protection module 206. When the second fire protection module 206 is installed, a large amount of space is required to accommodate the module body. The second module body 206a has a flat shape, and the module body can be installed in the original flat space within the expansion pack housing 202 or in the original flat space after being slightly expanded, which is advantageous for maintaining the compactness of the power storage expansion pack 200.

[0188] Optionally, the second battery module 204 includes a second battery holder 218 and a plurality of unit cells 114, and the second battery holder 218 secures the plurality of unit cells 114 to form the second battery module 204. The module body of the second fire module 206 faces one side exposing the unit cells 114 together with the second battery holder 218.

[0189] In some embodiments, as shown in FIG. 9, the module body of the second fire protection module 206 is fixed to the inner wall surface of the second battery box case 208.

[0190] This allows the module body of the second fire protection module 206 to be located close to the second battery module 204, allowing the second fire protection module 206 to respond quickly to a thermal runaway condition of the second battery module 204.

[0191] Specifically, the second battery module 204 is installed in the second battery box case 208, the inner wall surface of the second battery box case 208 faces the second battery module 204, and the module body of the second fire-fighting module 206 is fixed to the inner wall surface of the second battery box case 208, thereby bringing the module body of the second fire-fighting module 206 closer to the second battery module 204. When the fire-fighting detection area 120 meets the fire-fighting trigger condition, the trigger mechanism 116 generates a trigger signal in a timely manner, which allows the fire-extinguishing agent released from the release mechanism 118 to reach the second battery module 204 more quickly and suppress the thermal runaway state more quickly.

[0192] The module body of the second fire protection module 206 can be fixed to the inner wall surface of the second battery box case 208 by a method including, but not limited to, screws, snaps, and the like.

[0193] In some embodiments, the distance between the inner wall surface selected for mounting the module body of the second firefighting module 206 and the second battery module 204 is greater than the mounting distance of the module body of the second firefighting module 206 .

[0194] This allows the fire extinguishing agent to be released smoothly and efficiently into the chamber in which the second battery module 204 is located.

[0195] Specifically, the release mechanism 118 is mounted on the surface of the module body of the second fire protection module 206. To improve the operational efficiency of the second fire protection module 206, an installation distance requirement is set for the module body of the second fire protection module 206, which allows the release mechanism 118 to more smoothly and efficiently release the extinguishing agent into the chamber in which the second battery module 204 is located. Therefore, the distance between the inner wall selected for mounting the module body of the second fire protection module 206 and the second battery module 204 is greater than the installation distance of the module body of the second fire protection module 206, which allows the release mechanism 118 to more smoothly and efficiently release the extinguishing agent into the chamber in which the second battery module 204 is located. In one example, the installation distance requirement is set such that there are no obstacles within a 0.05 meter range of the release mechanism 118 (e.g., the nozzle 146).

[0196] In some embodiments, combining FIG. 5, the release mechanism 118 comprises a nozzle 146 , the nozzle 146 is located on the outer shell of the second fire protection module 206 , and the nozzle 146 is provided near the second battery module 204 .

[0197] This can improve the extinguishing accuracy of the fire extinguishing agent.

[0198] Specifically, in one embodiment, the module body of the second fire protection module 206 is a flat cylindrical body, and the nozzle 146 is provided on the circumferential side of the outer shell of the module body. The central axis of the nozzle 146 is parallel to the length of the cell body 134 of the single cell unit 114, and the nozzle 146 is provided close to the second battery module 204.

[0199] In one embodiment, an angle may be formed between the central axis of the nozzle 146 and the length of the cell body 134 of the cell unit 114, and the angle may be 90 degrees or an acute angle.

[0200] As can be appreciated, the present application is not limited to the shape of the module body of the second fire protection module 206 .

[0201] In some embodiments, combining FIG. 10, the cover plate 210 is provided with a breathing valve 154 .

[0202] This ensures that the power storage expansion pack 200 will not explode in the event of a thermal runaway condition.

[0203] Specifically, the breather valve 154 is used to balance the air pressure inside and outside the balance expansion pack housing 202 and prevent an explosion due to a sudden increase in internal pressure during thermal runaway of the single cell 114. Specifically, if the air pressure inside the expansion pack housing 202 is high, the high pressure can be released to the outside of the expansion pack housing 202 through the breather valve 154, thereby balancing the air pressure inside and outside the expansion pack housing 202. In another embodiment, the breather valve 154 is provided in the second battery box case 208.

[0204] In some embodiments, the extinguishing agent is an aerosol extinguishing agent.

[0205] This allows the fire extinguishing agent to be stored at normal pressure, and there is no need to lay a piping network; the aerosol fire extinguishing agent is non-toxic, non-corrosive, does not destroy the ozone layer, and is green and environmentally friendly.

[0206] Optionally, the aerosol fire extinguishing agent may be a thermal aerosol fire extinguishing agent. The fire extinguishing mechanism of thermal aerosols can be expressed as the following two main mechanisms: one is the temperature-reducing effect due to endothermic decomposition, and the other is the chemical suppression effect in the gas phase and solid phase, which work in concert with each other. In addition, the gas phase components in the aerosol fire extinguishing agent product also play a certain auxiliary role. For the specific fire extinguishing mechanism of aerosol fire extinguishing agents, please refer to the relevant descriptions in the above embodiments and will not be described in detail here.

[0207] Optionally, both the power storage integrated device 100 and the power storage expansion pack 200 include a foam sponge 220. In the power storage integrated device 100, the foam sponge 220 can be provided between the inner wall surface of the first battery box case 110 and the first battery module 104, and between the first battery module 104 and the intermediate partition plate 148. In the power storage expansion pack 200, the foam sponge 220 can be provided between the inner wall surface of the second battery box case 208 and the second battery module 204, and between the second battery module 204 and the module holder 222, thereby cushioning impact forces received by the battery modules. The module holder 222 serves to fix the second battery module 204, and after the module holder 222 is attached and fixed to the second battery box case 208, it applies force toward the second battery module 204 to prevent the second battery module 204 from shaking. Optionally, the AC load output terminal 160 is further covered with a protective cover 224 .

[0208] 12 , the power storage facility 300 according to the embodiment of the present application includes the power storage integrated device 100 according to any one of the above-described embodiments and at least one power storage expansion pack 200 according to any one of the above-described embodiments. The power storage expansion pack 200 is electrically connected to the power storage integrated device 100 and is used to expand the power storage integrated device 100.

[0209] The above-mentioned energy storage equipment 300 comprehensively considers the characteristics of consumer energy storage products, carefully designs fire protection solutions for consumer energy storage products, and adopts a built-in fire protection design that is compact, economical, maintenance-free, efficient and reliable, and does not affect the appearance of the energy storage equipment 300.

[0210] In some embodiments, as shown in FIG. 12 , the power storage integrated device 100 and the power storage expansion pack 200 are stacked one on top of the other, and the power storage integrated device 100 and the power storage expansion pack 200 achieve electrical connection and capacity expansion by stacking the blind plug terminals 216 of the adjacent contact surfaces, or achieve electrical connection and capacity expansion via a cable.

[0211] This reduces the horizontal space occupied by the power storage facility 300, improving the user experience.

[0212] Specifically, the integrated power storage device 100 and the power storage expansion pack 200 are stacked one on top of the other, allowing the power storage equipment 300 to be placed using the vertical space, thereby reducing the horizontal space occupied by the power storage equipment 300 and making the user feel that the power storage equipment 300 does not occupy much space in the home, improving the user experience and contributing to the popularization of the power storage equipment 300.

[0213] 12 , the power storage facility 300 includes one power storage integrated device 100 and two power storage expansion packs 200. The power storage integrated device 100 is located on the top layer of the power storage facility 300, and the two power storage expansion packs 200 are stacked sequentially from top to bottom. The middle power storage expansion pack 200 and the upper power storage integrated device 100 are electrically connected by stacking the blind plug terminals 216 or cables on their adjacent contact surfaces. The bottom power storage expansion pack 200 and the middle power storage expansion pack 200 are electrically connected by stacking the blind plug terminals 216 or cables on their adjacent contact surfaces, thereby enabling the bottom power storage expansion pack 200 and the upper power storage integrated device 100 to be electrically connected to each other for capacity expansion. As can be understood, in other embodiments, the lowest-layer power storage expansion pack 200 may directly realize capacity expansion by electrical connection with the upper-layer power storage integrated device 100, and the present application is not limited thereto.

[0214] In one example, the battery capacity of one storage-integrated device 100 is 2 KWH, the battery capacity of one storage expansion pack 200 is 2 KWH, and the capacity of the storage facility 300 shown in FIG. 12 is 6 KWH after stacking and expansion, and the user can purchase the number of storage expansion packs 200 to be installed according to the electricity demand of their home.

[0215] In other embodiments, the location of the power storage integrated device 100 is not limited to the top floor of the power storage facility 300, and the power storage integrated device 100 may be located at another height in the power storage facility 300, and the present application is not limited thereto.

[0216] 8 and 9, both the power storage integrated device 100 and the power storage expansion pack 200 are equipped with blind plug terminals 216. In the vertical direction, the power storage integrated device 100 and the adjacent power storage expansion pack 200 stacked thereon achieve capacity expansion by electrical connection via the blind plug terminals 216, and two adjacent power storage expansion packs 200 achieve capacity expansion by electrical connection by stacking the blind plug terminals 216 on the adjacent contact surfaces. In one embodiment, in the vertical direction, the power storage integrated device 100 and the power storage expansion pack 200 achieve capacity expansion by electrical connection via a cable.

[0217] In some embodiments, by combining Figures 12 and 13 and stacking the integrated power storage device 100 and the power storage expansion pack 200, the planar projection of the integrated power storage device 100 and the planar projection of the power storage expansion pack 200 overlap, or the overlap rate exceeds 90%.

[0218] This makes it possible to maintain stability of the power storage equipment 300 after it has been stacked.

[0219] Specifically, in order to ensure stability after stacking the energy storage equipment 300, and to ensure that the stacked product is visually integrated and has a good overall aesthetic appearance, it is required that the planar projection of the energy storage integrated device 100 and the planar projection of the energy storage expansion pack 200 overlap in the vertical direction, or that the degree of overlap exceeds 90%, i.e., the front-to-back width and left-to-right length of the energy storage expansion pack 200 match or nearly match the front-to-back width and left-to-right length of the energy storage integrated device 100.

[0220] In the above arrangement, the power storage expansion pack 200 includes fewer components than the power storage integrated device 100, so the height direction of the power storage expansion pack 200 can be compressed as much as possible to reduce structural costs. Unlike when the first battery module 104 of the power storage integrated device 100 uses a horizontally placed battery module (with its short side running along the front-to-back direction of the power storage integrated device 100), the second battery module 204 of the power storage expansion pack 200 uses a flatly placed battery module (with its short side running along the up-and-down direction of the power storage expansion pack 200), and in this way, the structural costs of the expansion pack casing 202 of the power storage expansion pack 200 can be reduced as much as possible.

[0221] Optionally, the module body of the second fire protection module 206 is arranged to correspond to the blind plug terminal 216 of the power storage expansion pack 200 and is located to the left of the second battery module 204 in the vertical direction.

[0222] In some embodiments, the power storage device 300 comprises one of a balcony solar power storage device, a portable power storage device, and a home power storage device.

[0223] This allows the power storage facility 300 to have a wide range of applications, meeting the usage needs of individual users in different scenarios.

[0224] Specifically, in one embodiment, the power storage device 300 includes a balcony solar power storage device. The balcony solar power storage device is installed on a balcony of a house and connected to a solar power panel to store the electrical energy generated by the solar power panel. The balcony solar power storage device can also store electrical energy from the power grid. The portable power storage device is a mobile power storage device that can store electrical energy from solar power panels and the power grid. Users can carry the storage device anywhere, indoors or outdoors, and use it. The home power storage device can be a storage device installed anywhere inside or outside a house. The home power storage device can store electrical energy from solar power panels and the power grid. All of the above different types of power storage devices 300 can supply power to user loads, including, but not limited to, home appliances, lamps, kitchen appliances, mobile phones, tablets, computers, etc.

[0225] As described above, the power storage integrated device 100, the power storage expansion pack 200, and the power storage facility 300 according to the embodiments of the present application can achieve at least the following beneficial effects. 1. Small-volume thermal aerosol fire fighting module is adopted. 2. The built-in fire protection module and special positioning design will not affect the appearance and shape design of the original product. 3. Passive trigger fire module, triggered by the heat-sensitive wire temperature, no need to consume power for fire detection. 4. The overall fire protection module has low installation structure costs and low costs for the fire protection module itself. 5. The passive triggering method of heat-sensitive wire and the active triggering method of dry node are simple, efficient and can respond in a timely manner. 6. The fire protection module is used for normal pressure storage, eliminating the need for periodic monitoring of the fire protection module, making it highly suitable for balcony energy storage products (the service life can exceed 10 years).

[0226] Although embodiments of the present application have been shown and described, those skilled in the art will understand that many changes, combinations, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is limited by the claims and their equivalents. [Explanation of symbols]

[0227] 100: power storage integrated device, 102: integrated device housing, 104: first battery module, 106: inverter circuit board, 108: first fire module, 108a: first module body, 110: first battery box case, 112: heat sink case, 114: cell unit, 116: trigger mechanism, 118: release mechanism, 120: fire detection area, 122: first mounting port, 124: second mounting port, 126: first battery management control board, 128: heat dissipation fin , 130: heat-sensitive wire, 132: glass fiber tube, 134: cell body, 136: positive electrode, 138: negative electrode, 140: explosion-proof valve, 142: bracket board, 144: wire harness, 145: connection part, 146: nozzle, 148: intermediate partition plate, 150: first chamber, 152: second chamber, 154: breathing valve, 156: solar power generation connection terminal, 158: grid connection terminal, 160: AC load output terminal, 162: first battery holder, 224: protective cover, 200: power storage expansion pack, 202: expansion pack housing, 204: second battery module, 206: second fire module, 206a: second module body, 208: second battery box case, 210: cover plate, 212: mounting port, 214: second battery management control board, 216: blind plug terminal, 218: second battery holder, 220: foam sponge, 222: module holder, 300: Energy storage facility.

Claims

1. An integrated power storage device comprising: an integrated device housing; and a first fire protection module provided in the integrated device housing; the integrated device housing includes a first battery box case and a heat sink case that are detachably connected, a first battery module is fixed in the first battery box case, and an inverter circuit board is fixed in the heat sink case; the first battery module includes a plurality of cells for storing and outputting electric energy; the inverter circuit board is used to convert AC power and DC power, and dissipates heat to the outside through the heat sink case; the first firefighting module includes a trigger mechanism, a fire extinguishing agent storage chamber, and a release mechanism; The trigger mechanism is provided in a fire detection area within the integrated device housing, and generates a trigger signal when the fire detection area satisfies a fire trigger condition; The fire extinguishing agent storage cabinet is used to store a fire extinguishing agent, The integrated power storage device is characterized in that the release mechanism is used to release the fire extinguishing agent into a chamber in which the first battery module is located in response to the trigger signal from the trigger mechanism.

2. the first fire-fighting module is a non-source automatic combustion fire-fighting module; The trigger mechanism comprises a passive trigger mechanism, the passive trigger mechanism comprising one of a temperature detector, a smoke detector, and an air pressure detector; when the passive trigger mechanism comprises a temperature detector, the temperature detector is a flexible temperature detector, the flexible temperature detector comprises a heat-sensitive wire, the heat-sensitive wire is disposed in the fire detection area, and burns when the temperature of the fire detection area is equal to or higher than the combustion temperature of the heat-sensitive wire, and further triggers the first fire module to release the extinguishing agent through the release mechanism; 2. The integrated power storage device according to claim 1, wherein the heat-sensitive wire is covered with a glass fiber tube.

3. The integrated power storage device according to claim 1 , wherein the fire detection area is located inside the first battery module or in an electrode area of ​​the first battery module.

4. the integrated power storage device further includes a first battery management control board, the first battery management control board being electrically connected to the first battery module and being used to monitor battery state information of the first battery module; the trigger mechanism includes a manual trigger mechanism, the manual trigger mechanism is electrically connected to the first battery management control board; When the first battery management control board monitors that the battery state information indicates a thermal runaway state, it sends a control signal to the active trigger mechanism; the active trigger mechanism is responsive to the control signal to further trigger the first fire extinguishing module to release the extinguishing agent via the release mechanism; the active trigger mechanism is an electrical trigger, the control signal is an electrical activation signal, and the electrical activation signal includes a current or voltage signal generated when switching from a closed state to a disconnected state, or a current or voltage signal generated when switching from a disconnected state to a closed state; 2. The integrated power storage device according to claim 1, wherein a glass fiber tube is provided around the outside of a wire harness connected to the electric trigger.

5. The integrated power storage device of claim 1, characterized in that the first fire-fighting module has a module body, the module body has the fire extinguishing agent storage compartment, the module body has a flat shape, the module body of the first fire-fighting module is fixed to the inner wall surface of the first battery box case, and the distance between the inner wall surface and the first battery module is greater than the mounting distance of the module body of the first fire-fighting module.

6. The integrated power storage device according to claim 1, characterized in that the release mechanism includes a nozzle, the nozzle is located on the outer shell of the first fire-fighting module, the nozzle is provided close to the first battery module, and the heat sink case is further provided with a photovoltaic power generation connection terminal, a grid connection terminal, and an AC load output terminal.

7. the integrated equipment housing further includes an intermediate partition plate, the intermediate partition plate being used to divide the integrated equipment housing into a first chamber and a second chamber, the first chamber being surrounded by the first battery box case and the intermediate partition plate, and the second chamber being surrounded by the heat sink case and the intermediate partition plate; 2. The integrated power storage device according to claim 1, wherein the heat sink case is provided with a breather valve.

8. a power storage expansion pack electrically connected to the power storage integrated device and used to expand the power storage integrated device, the power storage expansion pack including an expansion pack housing and a second fire protection module provided in the expansion pack housing; the expansion pack housing includes a second battery box case and a cover plate that are detachably connected, a second battery module is fixed in the second battery box case, and the cover plate is used to close an attachment opening of the second battery box case; the second battery module includes a plurality of cells for storing and outputting electric energy; the second firefighting module includes a trigger mechanism, a fire extinguishing agent storage chamber, and a release mechanism; the trigger mechanism is provided in a fire detection area within the expansion pack housing, and generates a trigger signal when the fire detection area satisfies a fire trigger condition; The fire extinguishing agent storage cabinet is used to store a fire extinguishing agent, The power storage expansion pack is characterized in that the release mechanism releases the fire extinguishing agent into a chamber in which the second battery module is located in response to the trigger signal from the trigger mechanism.

9. the second fire-fighting module is a non-source automatic combustion fire-fighting module; The trigger mechanism comprises a passive trigger mechanism, and the passive trigger mechanism comprises one of a temperature detector, a smoke detector, and an air pressure detector. When the passive trigger mechanism comprises a temperature detector, the temperature detector is a flexible temperature detector, and the flexible temperature detector comprises a heat-sensitive wire, and the heat-sensitive wire is disposed in the fire detection area, and when the temperature of the fire detection area is equal to or higher than the combustion temperature of the heat-sensitive wire, the heat-sensitive wire burns, and the second fire module is triggered to release the extinguishing agent through the release mechanism; 9. The power storage expansion pack according to claim 8, wherein the heat-sensitive wire is covered with a glass fiber tube.

10. The power storage expansion pack according to claim 8 , wherein the fire detection area is located inside the second battery module or in an electrode area of ​​the second battery module.

11. the power storage expansion pack further includes a second battery management control board, the second battery management control board being electrically connected to the second battery module and being used to monitor battery status information of the second battery module; the trigger mechanism includes a manual trigger mechanism, the manual trigger mechanism is electrically connected to the second battery management control board; When the second battery management control board monitors that the battery state information indicates a thermal runaway state, it sends a control signal to the active trigger mechanism; the active trigger mechanism is responsive to the control signal to further trigger the second fire extinguishing module to release the extinguishing agent via the release mechanism; the active trigger mechanism is an electrical trigger, the control signal is an electrical activation signal, and the electrical activation signal includes a current or voltage signal generated when switching from a closed state to a disconnected state, or a current or voltage signal generated when switching from a disconnected state to a closed state; 9. The power storage expansion pack according to claim 8, wherein a glass fiber tube is provided around the outside of a wire harness connected to the electrical trigger.

12. The module body of the second fire-fighting module has a flat shape, and the module body of the second fire-fighting module is fixed to an inner wall surface of the second battery box case, and the distance between the inner wall surface and the second battery module is greater than the mounting distance of the module body of the second fire-fighting module; the release mechanism includes a nozzle, the nozzle being located on the outer shell of the second firefighting module and adjacent to the second battery module; 9. The power storage expansion pack according to claim 8, wherein a breather valve is provided on the second battery box case or the cover plate.

13. An electricity storage facility, The integrated power storage device according to claim 1; and at least one power storage expansion pack according to claim 8, The power storage facility is characterized in that the power storage expansion pack is electrically connected to the power storage integrated device and is used to expand the power storage integrated device.

14. 14. The energy storage facility according to claim 13, wherein the energy storage integrated device and the energy storage expansion pack are stacked one on top of the other, a planar projection of the energy storage integrated device overlaps with a planar projection of the energy storage expansion pack, or the overlapping degree is greater than 90%, and the energy storage integrated device and the energy storage expansion pack achieve capacity expansion by stacking the blind plug terminals of their adjacent contact surfaces, or by electrical connection via a cable.

15. The power storage facility according to claim 13, wherein the power storage facility includes one of a balcony solar power storage facility, a portable power storage facility, and a home power storage facility.

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