Energy storage all-in-one machine, energy storage power-up pack and energy storage equipment

Abstract

The invention discloses an energy storage all-in-one machine, an energy storage power-up package and energy storage equipment. The energy storage all-in-one machine comprises an all-in-one machine box body, the all-in-one machine box body comprises a first battery box shell and a radiator shell which are detachably connected, a first battery module is fixed in the first battery box shell, and an inverter circuit board is fixed in the radiator shell; the first battery module comprises a plurality of battery cell monomers; the inverter circuit board dissipates heat outwards through the radiator shell; the first fire fighting module is arranged in the integrated machine box and comprises a triggering mechanism, a fire extinguishing agent storage bin and a releasing mechanism. The trigger mechanism is arranged in a fire-fighting detection area in the integrated machine box body, and the trigger mechanism generates a trigger signal when the fire-fighting detection area meets a fire-fighting trigger condition; and the release mechanism is used for releasing the fire extinguishing agent to the chamber where the first battery module is located in response to a trigger signal of the trigger mechanism. The energy storage all-in-one machine provides a built-in fire-fighting design.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an all-in-one energy storage machine, an energy storage charging pack, and an energy storage device. Background Art

[0002] With the development of the new energy industry and continuous innovation in battery technology, consumer-oriented energy storage systems are rapidly gaining popularity due to their green and economical characteristics. These systems are mainly divided into two categories based on their application scenarios: outdoor portable energy storage systems and indoor energy storage systems. Indoor energy storage systems are further divided into home energy storage systems and balcony photovoltaic energy storage systems.

[0003] Outdoor portable energy storage system: Designed for mobile scenarios such as camping and self-driving, it provides a lightweight, plug-and-play low- to medium-power power supply. Home energy storage system: For users with independent houses (usually equipped with rooftop photovoltaics), it deeply integrates photovoltaic systems to store surplus electricity for home energy management (increasing self-use rate) and providing long-term emergency backup power. Balcony photovoltaic energy storage system: Targeted at urban apartment users (with limited space / budget), it achieves "self-generation and self-use, and surplus electricity is connected to the grid" by installing micro photovoltaic panels on the balcony and combining them with small-scale energy storage, mainly used to reduce daily electricity bills.

[0004] As a core component of these systems, lithium batteries are crucial for safety. Unlike commercial and industrial energy storage systems, consumer energy storage systems are directly linked to the safety of users' lives and property. However, lithium batteries can experience thermal runaway (uncontrolled temperature increases triggering a chain reaction of exothermic reactions) due to internal or external factors, which can lead to fire risks. Therefore, further improving the safety of consumer energy storage systems is a key technical challenge that needs to be overcome. Summary of the Invention

[0005] The present application provides an energy storage all-in-one machine, an energy storage power pack and an energy storage device, which can solve at least one of the above-mentioned technical problems.

[0006] An integrated energy storage device provided in the embodiments of the present application includes:

[0007] An integrated chassis, comprising a first battery box housing and a radiator housing that are detachably connected, wherein a first battery module is fixed in the first battery box housing, and an inverter circuit board is fixed in the radiator housing;

[0008] The first battery module includes a plurality of battery cells for storing and outputting electricity;

[0009] The inverter circuit board is used for converting AC power and DC power, and dissipates heat to the outside through the radiator housing;

[0010] A first fire-fighting module is provided in the integrated chassis, and the first fire-fighting module includes a trigger mechanism, a fire-extinguishing agent storage chamber, and a release mechanism;

[0011] The trigger mechanism is provided in the fire detection area in the integrated chassis, and generates a trigger signal when the fire detection area meets the fire trigger condition;

[0012] The fire extinguishing agent storage bin is used to store fire extinguishing agent;

[0013] The release mechanism is used to release the fire extinguishing agent into the chamber where the first battery module is located in response to the trigger signal of the trigger mechanism.

[0014] The above-mentioned integrated energy storage device takes into account the characteristics of consumer-oriented energy storage products and has carefully designed a fire protection solution specifically for consumer-oriented energy storage products. It 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.

[0015] In certain embodiments, the first fire protection module is a passive self-triggering fire protection module.

[0016] In some embodiments, the trigger mechanism includes a passive trigger mechanism, and the passive trigger mechanism includes any one of a temperature detector, a smoke detector, and an air pressure detector.

[0017] In some embodiments, the temperature detector is a flexible temperature detector, which includes a thermistor. The thermistor is arranged in the fire detection area and burns when the temperature in the fire detection area exceeds or equals the combustion temperature of the thermistor, thereby triggering the first fire module to release the fire extinguishing agent through the release mechanism.

[0018] In certain embodiments, the heat-sensitive wire is coated with a glass fiber tube.

[0019] In certain embodiments, the fire detection area is located inside the first battery module or in an electrode area of ​​the first battery module.

[0020] In some embodiments, the integrated energy storage device further includes a first battery management control board, which is electrically connected to the first battery module and is used to monitor battery status information of the first battery module;

[0021] The trigger mechanism includes an active trigger mechanism, and the active trigger mechanism is electrically connected to the first battery management control board;

[0022] When the first battery management control board monitors that the battery status information is in a thermal runaway state, sending a control signal to the active trigger mechanism;

[0023] The active triggering mechanism responds to the control signal, thereby triggering the first fire fighting module to release the fire extinguishing agent through the releasing mechanism.

[0024] In some embodiments, the active trigger mechanism is an electric initiator, and the control signal is an electric start signal, which includes a current or voltage signal generated when switching from a closed state to an open state, or a current or voltage signal generated when switching from an open state to a closed state.

[0025] In certain embodiments, the wiring harness connected to the electrical initiator is covered with a glass fiber tube.

[0026] In some embodiments, the first fire-fighting module includes a module body, the module body includes the fire-extinguishing agent storage bin, the module body is flat, and the module body of the first fire-fighting module is fixed to the inner wall surface of the first battery box shell, and the distance between the inner wall surface and the first battery module is greater than the installation distance of the module body of the first fire-fighting module.

[0027] In some embodiments, the release mechanism includes a nozzle, which is located on the housing of the first fire protection module and is arranged close to the first battery module.

[0028] In some embodiments, the integrated chassis further includes a middle partition, which is used to separate the integrated chassis into a first chamber and a second chamber, the first chamber being formed by the first battery box shell and the middle partition, and the second chamber being formed by the radiator shell and the middle partition.

[0029] In some embodiments, a breathing valve is provided on the radiator housing.

[0030] In certain embodiments, the radiator housing is further provided with a photovoltaic connection terminal, a grid connection terminal, and an AC load output terminal.

[0031] In certain embodiments, the fire extinguishing agent is an aerosol fire extinguishing agent.

[0032] An energy storage power-up pack provided in an embodiment of the present application is used to be electrically connected to an integrated energy storage device to expand the capacity of the integrated energy storage device. The energy storage power-up pack includes:

[0033] The power pack housing comprises a detachably connected second battery box housing and a cover plate, wherein a second battery module is fixed in the second battery box housing, and the cover plate is used to close the installation opening of the second battery box housing;

[0034] The second battery module includes a plurality of battery cells for storing and outputting electricity;

[0035] A second fire protection module is provided in the power pack housing, the second fire protection module including a trigger mechanism, a fire extinguishing agent storage compartment and a release mechanism;

[0036] The trigger mechanism is provided in the fire detection area in the power pack housing, and generates a trigger signal when the fire detection area meets the fire trigger condition;

[0037] The fire extinguishing agent storage bin is used to store fire extinguishing agent;

[0038] The release mechanism releases the fire extinguishing agent into the chamber where the second battery module is located in response to the trigger signal of the trigger mechanism.

[0039] The above-mentioned energy storage power pack comprehensively considers the characteristics of consumer-oriented energy storage products and has carefully designed a fire protection solution specifically for consumer-oriented energy storage products. It 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.

[0040] In some embodiments, the second fire protection module is a passive self-triggering fire protection module.

[0041] In some embodiments, the trigger mechanism includes a passive trigger mechanism, and the passive trigger mechanism includes any one of a temperature detector, a smoke detector, and an air pressure detector.

[0042] In some embodiments, the temperature detector is a flexible temperature detector, which includes a thermistor. The thermistor is arranged in the fire detection area and burns when the temperature of the fire detection area exceeds or equals the combustion temperature of the thermistor, thereby triggering the second fire module to release the fire extinguishing agent through the release mechanism.

[0043] In certain embodiments, the heat-sensitive wire is coated with a glass fiber tube.

[0044] In certain embodiments, the fire detection area is located inside the second battery module or in an electrode area of ​​the second battery module.

[0045] In some embodiments, the energy storage and charging pack further includes a second battery management control board, the second battery management control board being electrically connected to the second battery module and configured to monitor battery status information of the second battery module;

[0046] The trigger mechanism includes an active trigger mechanism, and the active trigger mechanism is electrically connected to the second battery management control board;

[0047] When the second battery management control board monitors that the battery status information is in a thermal runaway state, sending a control signal to the active triggering mechanism;

[0048] The active triggering mechanism responds to the control signal, thereby triggering the second fire fighting module to release the fire extinguishing agent through the release mechanism.

[0049] In some embodiments, the active trigger mechanism is an electric initiator, and the control signal is an electric start signal, which includes a current or voltage signal generated when switching from a closed state to an open state, or a current or voltage signal generated when switching from an open state to a closed state.

[0050] In certain embodiments, the wiring harness connected to the electrical initiator is covered with a glass fiber tube.

[0051] In some embodiments, the module body of the second fire protection module is flat, and the module body of the second fire protection module is fixed to the inner wall surface of the second battery box shell, and the distance between the inner wall surface and the second battery module is greater than the installation distance of the module body of the second fire protection module.

[0052] In some embodiments, the release mechanism includes a nozzle, which is located on the housing of the second fire protection module and is arranged close to the second battery module.

[0053] In some embodiments, a breathing valve is provided on the second battery box housing or the cover.

[0054] In certain embodiments, the fire extinguishing agent is an aerosol fire extinguishing agent.

[0055] An energy storage device provided in an embodiment of the present application includes:

[0056] An integrated energy storage device according to any of the above embodiments;

[0057] At least one energy storage and power pack according to any of the above embodiments;

[0058] The energy storage power pack is used to be electrically connected to the energy storage integrated machine to achieve capacity expansion of the energy storage integrated machine.

[0059] In certain embodiments, the integrated energy storage device and the energy storage and power pack are stacked one above the other, and the integrated energy storage device and the energy storage and power pack are electrically connected and expanded by stacking blind-plug terminals on adjacent contact surfaces, or by cables.

[0060] The above-mentioned energy storage equipment takes into account the characteristics of consumer-oriented energy storage products and has carefully designed a fire protection solution specifically for consumer-oriented energy storage products. It 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.

[0061] In certain embodiments, after the integrated energy storage device and the energy storage and power pack are stacked, a top projection of the integrated energy storage device overlaps with a top projection of the energy storage and power pack, or the degree of overlap is greater than 90%.

[0062] In certain embodiments, the energy storage device comprises any one of a balcony photovoltaic energy storage device, a portable energy storage device, and a household energy storage device.

[0063] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0065] Figure 1 It is a structural diagram of an energy storage integrated device according to an embodiment of the present application;

[0066] Figure 2 1 is another structural diagram of the energy storage integrated device according to an embodiment of the present application;

[0067] Figure 3 1 is an exploded schematic diagram of an integrated energy storage device according to an embodiment of the present application;

[0068] Figure 4 is another exploded schematic diagram of the energy storage integrated device according to an embodiment of the present application;

[0069] Figure 5 This is a schematic structural diagram of the first fire protection module and the second fire protection module according to an embodiment of the present application;

[0070] Figure 6 This 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;

[0071] Figure 7 It is a schematic structural diagram of a battery cell according to an embodiment of the present application;

[0072] Figure 8 It is a structural diagram of the energy storage and charging pack according to the embodiment of the present application;

[0073] Figure 9 This is another structural diagram of the energy storage and charging pack according to the embodiment of the present application;

[0074] Figure 10 It is an exploded schematic diagram of an energy storage and charging pack according to an embodiment of the present application;

[0075] Figure 11 This is another exploded schematic diagram of the energy storage and charging pack according to the embodiment of the present application;

[0076] Figure 12 It is a structural diagram of an energy storage device according to an embodiment of the present application;

[0077] Figure 13 It is a top view of the energy storage device according to an embodiment of the present application.

[0078] Description of main component symbols:

[0079] Energy storage system 100, system housing 102, first battery module 104, inverter circuit board 106, first fire protection module 108, first module body 108a, first battery box housing 110, radiator housing 112, battery cell 114, trigger mechanism 116, release mechanism 118, fire detection area 120, first mounting port 122, second mounting port 124, first battery management control board 126, heat sink fin 128, thermal wire 130, fiberglass tube 132, battery cell body 134, positive electrode 136, negative electrode 138, explosion-proof valve 140, bracket plate 142, wiring harness 144, connector 145, nozzle 146, middle separator 148, first chamber 150, second chamber 152, breathing valve 154, photovoltaic connection terminal 156, grid connection terminal 158, AC load output terminal 160, first battery bracket 162, protective cover 224;

[0080] Energy storage power pack 200, power pack housing 202, second battery module 204, second fire protection module 206, second module body 206a, second battery box housing 208, cover 210, mounting port 212, second battery management control board 214, blind-plug terminal 216, second battery bracket 218, foam 220, module bracket 222;

[0081] Energy storage device 300. DETAILED DESCRIPTION

[0082] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application.

[0083] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections. They can refer to mechanical connections or electrical connections. They can refer to direct connections or indirect connections through an intermediary. They can refer to internal communication between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0084] Current consumer-oriented energy storage products (such as balcony photovoltaic energy storage) generally rely on a BMS-based pre-emptive thermal runaway prevention and control strategy. This strategy monitors the temperature of the battery cells 114 and key components (inverter, BMS, EMS), triggering derating or shutdown to reduce the temperature and prevent hazards. However, with the high degree of integration of equipment (battery modules, BMS, EMS, inverter integration), its internal environment is becoming increasingly complex, and the preset algorithm is difficult to cover all sudden abnormal situations. More importantly, once the thermal runaway breaks through the algorithm's defense line (such as smoke and fire), the existing solution lacks timely and effective emergency response measures.

[0085] On the other hand, while large-scale industrial and commercial energy storage systems are equipped with fully functional fire protection systems (including multiple sensors, complex wiring, and even pipe networks), their design is based on specific premises: first, ample space: they can be deployed in dedicated locations (abandoned factories, independent power plants, port areas, factory rooftops), without spatial density restrictions; second, they are insensitive to cost and power consumption: the system's large size makes it relatively insensitive to the high complexity, high cost, large size, and high power consumption of fire protection systems. Therefore, the "high complexity, high cost, large size, and high power consumption" characteristics of industrial and commercial fire protection systems make them completely unsuitable for consumer-grade products such as balcony energy storage, which are compact, cost-sensitive, and power-constrained.

[0086] In summary, the current market urgently needs a fire protection solution tailored for consumer-oriented energy storage equipment (especially highly integrated balcony energy storage).

[0087] See also Figures 1 to 6The energy storage integrated machine 100 provided in the embodiment of the present application includes an integrated machine housing 102, a first battery module 104, an inverter circuit board 106 and a first fire protection module 108. The integrated machine housing 102 includes a detachably connected first battery box housing 110 and a radiator housing 112. The first battery box housing 110 fixes the first battery module 104, and the radiator housing 112 fixes the inverter circuit board 106. The first battery module 104 includes a plurality of battery cells 114, which are used to store and output electricity. The inverter circuit board 106 is used to convert AC power and DC power, and dissipates heat to the outside through the radiator housing 112. The first fire protection module 108 is located in the integrated machine housing 102. In this embodiment, the first fire protection module 108 is provided in the first battery box housing 110. The first fire protection module 108 includes a trigger mechanism 116, a fire extinguishing agent storage compartment and a release mechanism 118. It is understandable that the first fire protection module 108 is not limited to being disposed in the first battery box housing 110 , and may also be located at other locations in the integrated chassis 102 , such as in the radiator housing 112 .

[0088] A trigger mechanism 116 is disposed within a fire detection area 120 within the integrated chassis 102. The trigger mechanism 116 generates a trigger signal when a fire trigger condition is met in the fire detection area 120. The fire extinguishing agent storage compartment is used to store fire extinguishing agent. A release mechanism 118 is used to release the fire extinguishing agent into the chamber containing the first battery module 104 in response to a trigger signal from the trigger mechanism 116.

[0089] The above-mentioned integrated energy storage device 100 comprehensively considers the characteristics of consumer-oriented energy storage products and has carefully designed a fire protection solution specifically for consumer-oriented energy storage products. It 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 device 300.

[0090] Optionally, the energy storage integrated machine 100 may refer to an energy storage product in which a battery module and an inverter circuit board 106 are assembled in the energy storage integrated machine 100 , which can meet the design requirements of miniaturization and can be applied to space-constrained usage scenarios, such as home energy storage, balcony energy storage, etc.

[0091] The integrated chassis 102 is a component that can protect the other components of the energy storage integrated device 100. It can prevent moisture, dust, etc. from invading the live components and causing short circuits, or corrosion and causing open circuits. At the same time, the integrated chassis 102 can also play a certain role in heat preservation. The material of the integrated chassis 102 includes but is not limited to metal (such as iron, aluminum, etc.). Optionally, the outer surface of the integrated chassis 102 can be covered with a protective layer (such as an anti-rust layer, an anti-oxidation layer, etc.), so that the integrated chassis 102 can cope with complex environmental changes.

[0092] The integrated housing 102 includes a first battery box housing 110 and a radiator housing 112. A first mounting opening 122 is provided on the side of the first battery box housing 110 facing the radiator housing 112, and a second mounting opening 124 is provided on the side of the radiator housing 112 facing the first battery box housing 110. The first battery box housing 110 and the radiator housing 112 can be detachably connected through the first mounting opening 122 and the second mounting opening 124. The detachable connection between the first battery box housing 110 and the radiator housing 112 facilitates maintenance of the energy storage integrated machine 100. The detachable connection methods between the first battery box housing 110 and the radiator housing 112 include, but are not limited to, screws, snaps, and other connection methods.

[0093] The first battery module 104 can be fixed in the first battery box shell 110 by means including but not limited to screws. The first battery box shell 110 can protect and isolate the first battery module 104. The multiple battery cells 114 of the first battery module 104 can be electrically connected in series, parallel or mixed, and mixed means that the multiple battery cells 114 are connected in parallel and in series. The battery cells 114 can be used to store and output electricity. For example, the energy storage integrated machine 100 can be connected to an external power supply (such as a photovoltaic panel or an AC power supply), and the battery cells 114 can store the electricity input by the external power supply. For another example, the energy storage integrated machine 100 can be connected to a load, and the battery cells 114 can output electricity to the load. The battery cells 114 include but are not limited to lithium batteries, sodium batteries, etc.

[0094] The inverter circuit board 106 can be fixed in the radiator housing 112 by means including but not limited to screws. The energy storage integrated machine 100 also includes a first battery management control board 126, and the inverter circuit board 106 can be electrically connected to the first battery module 104 through the first battery management control board 126. The inverter circuit board 106 is used for conversion between AC and DC. In one embodiment, the inverter circuit board 106 can convert the DC power output by the battery cell 114 into AC power suitable for powering the load. In one embodiment, the inverter circuit board 106 can convert the AC power of the external power supply into DC power suitable for charging the battery cell 114.

[0095] In one embodiment, the inverter circuit board 106 can perform power control. The inverter circuit board 106 includes a DC / DC (direct current / direct current) converter and a DC / AC (direct current / alternating current) bidirectional converter as well as an MPPT (maximum power point tracking) module, all of which are modules that generate relatively high heat. The inverter circuit board 106 is disposed within the radiator housing 112, and can dissipate the heat generated by the inverter circuit board 106 during operation to the outside of the energy storage device 100 in a timely manner, thereby ensuring the normal operation of the energy storage device 100 to a certain extent. Optionally, the heat-generating components of the inverter circuit board 106 face the inner surface of the radiator housing 112.

[0096] Optionally, heat sink fins 128 are provided on the surface of the radiator housing 112 facing away from the inverter circuit board 106. The heat sink fins 128 can increase the surface area of ​​the radiator housing 112, thereby improving heat dissipation efficiency. The length direction of the heat sink fins 128 is arranged along the vertical direction of the energy storage device 100, which facilitates the timely replenishment of cold air from the bottom of the heat sink fins 128 to the heat sink fins 128, thereby further improving heat dissipation efficiency. Optionally, the inverter circuit board 106 is generally flat and arranged along the vertical direction of the energy storage device 100, thereby maximizing the timely dissipation of heat to the radiator housing 112.

[0097] The first fire protection module 108 is used to implement the fire protection function of the integrated energy storage device 100. Among the components of the integrated energy storage device 100, the first battery module 104 is the one that is most prone to thermal runaway. The first fire protection module 108 is located within the first battery compartment housing. When thermal runaway occurs in the first battery module 104, the first fire protection module 108 can promptly respond to the occurrence of thermal runaway by releasing a fire extinguishing agent into the chamber where the first battery module 104 is located. This suppresses the thermal runaway of the first battery module 104 in its early stages, playing a key role in preventing further spread of thermal runaway and ensuring the safe use of the integrated energy storage device 100. Optionally, the first fire protection module 108 is located within the first battery compartment housing 110, in an area adjacent to the first battery module 104.

[0098] The first fire protection module 108 includes a trigger mechanism 116, a fire extinguishing agent storage chamber, and a release mechanism 118. The trigger mechanism 116 is provided in a fire detection area 120 within the integrated chassis 102. Optionally, a thermal simulation test can be performed on the integrated chassis 102 of the energy storage integrated machine 100. The thermal simulation test determines the heat accumulation area within the integrated chassis 102 during operation of the energy storage integrated machine 100, that is, the area prone to thermal runaway. This heat accumulation area is selected as the fire detection area 120. Optionally, the fire detection area 120 is located within the first battery box housing 110. Preferably, the fire detection area 120 is located inside the first battery module 104 or in the electrode area of ​​the first battery module 104. It is understood that in other embodiments, the fire detection area 120 can also be other locations within the integrated chassis 102 of the energy storage integrated machine 100, which can be determined through simulation, testing, experience, etc.

[0099] The trigger mechanism 116 generates a trigger signal when the fire detection zone 120 meets a fire trigger condition. Optionally, the fire detection zone 120 meeting the fire trigger condition may mean that the temperature of the fire detection zone 120 is greater than or equal to a set temperature, or the fire detection zone 120 meeting the fire trigger condition may mean that the air pressure in the fire detection zone 120 is greater than or equal to a set pressure.

[0100] The fire extinguishing agent storage bin is used to store fire extinguishing agent, ensuring that the agent is properly stored. When the fire detection zone 120 meets the fire triggering conditions, the fire extinguishing agent can be promptly and sufficiently released by the release mechanism 118 to the chamber containing the first battery module 104. This fire extinguishing agent storage bin can be stored at normal pressure. The energy storage device 300 has a design life of over 10 years, and the normal pressure fire extinguishing agent storage bin does not require regular maintenance and overhaul, making it ideal for the energy storage device 200.

[0101] Fire extinguishing agents may include, but are not limited to, gaseous, water-based, and other extinguishing agents. Gaseous extinguishing agents 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 include, but are not limited to, dry powder, thermal aerosol, and carbon dioxide.

[0102] The release mechanism 118 can release the fire extinguishing agent into the chamber where the first battery module 104 is located in response to the trigger signal of the trigger mechanism 116, so that when the fire detection area 120 meets the fire triggering conditions, the fire extinguishing agent can be released into the chamber where the first battery module 104 is located in a timely and sufficient manner, thereby suppressing the thermal runaway state in the early stage, playing a key role in preventing the further spread of thermal runaway, and ensuring the safe use of the energy storage integrated machine 100.

[0103] The first battery management control board 126 is electrically connected to the first battery module 104 and is used to monitor the battery status information of the first battery module 104. The first battery management control board 126 may include a battery management system (BMS). Figures 3 and 4 The first battery box housing 110 and the radiator housing 112 are assembled together in the front-to-back direction, with the first battery box housing 110 in front and the radiator housing 112 in the back. The first battery module 104, the first battery management control board 126 and the inverter circuit board 106 are arranged in sequence from front to back in the integrated machine case 102, which is conducive to the miniaturization of the energy storage integrated machine 100.

[0104] In some embodiments, the first fire protection module 108 is a passive self-triggering fire protection module.

[0105] Therefore, the integrated energy storage device 100 is more suitable for balcony photovoltaic energy storage products with smaller capacity.

[0106] Specifically, a passive, self-triggering firefighting module can be one that lacks an independent power source and can automatically release fire extinguishing agents in the event of thermal runaway within the integrated energy storage device 100. Therefore, even if the integrated energy storage device 100 is equipped with the first firefighting module 108, it will essentially consume no power from the integrated energy storage device 100, ensuring the long-term power storage and power supply capabilities of the integrated energy storage device 100. This makes it particularly suitable for balcony photovoltaic energy storage systems with smaller capacity.

[0107] In some embodiments, the trigger mechanism 116 includes a passive trigger mechanism, which includes any one of a temperature detector, a smoke detector, and an air pressure detector. Thus, the fire protection function can be triggered without consuming the power of the energy storage device 100.

[0108] Specifically, in one embodiment, the passive trigger mechanism can be self-triggered based on a physical / chemical mechanism. The passive trigger mechanism can be self-triggered based on a physical / chemical mechanism without the need for power supply, without consuming energy from the energy storage device 100, ensuring more power for users.

[0109] In one embodiment, the passive trigger mechanism is self-triggered based on a physical mechanism. A physical self-triggered firefighting mechanism is a purely mechanical emergency firefighting technology that does not rely on electricity or control systems. It primarily uses the physical properties of the material itself (such as thermal sensitivity and pressure changes) to achieve automatic fire detection and release of fire extinguishing agents.

[0110] Specifically, the physical mechanism may include but is not limited to a thermal trigger mechanism and a pressure-linked trigger mechanism. The thermal trigger mechanism may mean that when the temperature of the fire detection area 120 reaches or exceeds the set temperature, the higher temperature may trigger the trigger mechanism 116 to generate a trigger signal, thereby causing the release mechanism 118 to release the fire extinguishing agent to the chamber where the first battery module 104 is located. Optionally, under the thermal trigger mechanism, the passive trigger mechanism may include a thermistor 130, which may be arranged in the fire detection area 120. When the temperature of the fire detection reaches or exceeds the melting temperature of the thermistor 130, the release mechanism 118 releases the fire extinguishing agent to the chamber where the first battery module 104 is located in response to the trigger signal of the trigger mechanism 116.

[0111] The pressure-linked trigger mechanism may mean that when the pressure in the fire detection zone 120 reaches or exceeds a set pressure, the higher pressure can trigger the trigger mechanism 116 to generate a trigger signal, thereby causing the release mechanism 118 to release the fire extinguishing agent into the chamber where the first battery module 104 is located. Optionally, under the pressure-linked trigger mechanism, the passive trigger mechanism may include a mechanical pressure relief valve. When the battery cell 114 thermally runs away, it will emit high-pressure gas. When the pressure is greater than or equal to the set pressure, the mechanical pressure relief valve automatically opens and links the release mechanism 118 to release the fire extinguishing agent into the chamber where the first battery module 104 is located.

[0112] In one embodiment, the passive trigger mechanism is based on a self-triggering chemical mechanism. A chemical self-triggering firefighting mechanism utilizes the inherent physical and chemical properties of a material (such as thermal degradation and chemical reaction gas production) to automatically detect fires and release extinguishing agents. Specifically, the firefighting system is activated by the autonomous reaction of chemicals at high temperatures or under specific conditions, without the need for external power or control system intervention.

[0113] Specifically, the chemical self-triggering mechanism may include a thermosensitive polymer explosion mechanism and a chemical decomposition gas drive. Under the thermosensitive polymer explosion mechanism, the passive triggering mechanism may include a fire detection tube, in which a low-melting-point copolymer (such as ethylene-vinyl acetate) is provided. The fire detection tube is located in the fire detection area 120. When the temperature of the fire detection area 120 reaches or exceeds the set temperature (such as 72°C–90°C), the polymer molecular chain breaks and softens, and the pressure of the internal driving gas (such as nitrogen) breaks through the tube wall limit, triggering a directional explosion. The explosion instantly drives the fire extinguishing agent to spray precisely through the crack to the heat source point.

[0114] Driven by chemical decomposition and gas production, the passive trigger mechanism may include a gas generating agent. A solid gas generating agent (such as nitrocellulose) is added to the fire extinguishing agent storage chamber. When heat generated by thermal runaway is transferred to the fire extinguishing agent storage chamber, the gas generating agent rapidly decomposes and releases a large amount of gas (such as CO2 / N2), which propels the fire extinguishing agent out at high speed.

[0115] The passive trigger mechanism includes any one of a temperature detector, a smoke detector, and an air pressure detector. Thus, the fire protection function can be passively triggered by any one of temperature, smoke, and air pressure.

[0116] Specifically, in one embodiment, the passive trigger mechanism includes a temperature detector, which may be located in the fire detection area 120 and configured to detect the temperature of the fire detection area 120. When the temperature of the fire detection area 120 is greater than or equal to a set temperature, the high temperature may cause the passive trigger mechanism to generate a trigger signal, thereby causing the release mechanism 118 to release the fire extinguishing agent into the chamber where the first battery module 104 is located.

[0117] In one embodiment, the passive trigger mechanism includes a smoke detector, which may be located in the fire detection area 120 and configured to detect the smoke concentration in the fire detection area 120. When the smoke concentration in the fire detection area 120 is greater than or equal to a set concentration, the high smoke concentration may cause the passive trigger mechanism to generate a trigger signal, thereby causing the release mechanism 118 to release the fire extinguishing agent into the chamber where the first battery module 104 is located.

[0118] In one embodiment, the passive trigger mechanism includes an air pressure detector, which may be located in the fire detection zone 120 and configured to detect the air pressure in the fire detection zone 120. When the air pressure in the fire detection zone 120 is greater than or equal to a set pressure, the high air pressure may cause the passive trigger mechanism to generate a trigger signal, thereby causing the release mechanism 118 to release the fire extinguishing agent into the chamber where the first battery module 104 is located.

[0119] In some embodiments, the temperature detector is a flexible temperature detector. Figure 6 The flexible temperature detector includes a thermistor 130, which is arranged in the fire detection area 120. When the temperature of the fire detection area 120 exceeds or equals the combustion temperature of the thermistor 130, it burns, thereby triggering the first fire module 108 to release the fire extinguishing agent through the release mechanism 118.

[0120] This facilitates the arrangement of the temperature detector.

[0121] Specifically, because the temperature detector is flexible, its shape can be adjusted to suit the installation area. Therefore, without changing the internal space of the integrated energy storage device 100 or significantly altering the internal layout of the integrated energy storage device 100, the temperature detector can be placed in the fire detection area 120 of the integrated energy storage device 100 through its deformation, eliminating the need to reserve additional installation space and helping to maintain the compactness of the integrated energy storage device 100. Flexible temperature detectors are particularly suitable for products with very limited space, such as balcony energy storage.

[0122] For example, the flexible temperature detector can be bent according to the internal space of the energy storage device 100 and arranged in the original internal space of the energy storage device 100, so that the flexible temperature detector can be set in the fire detection area 120 without setting up additional space for the flexible temperature detector.

[0123] The flexible temperature detector includes a thermistor 130 , whereby combustion is triggered when the temperature of the thermistor 130 is too high, which is simple and efficient and more suitable for balcony energy storage products.

[0124] Specifically, when the temperature of the fire detection zone 120 exceeds or is equal to the combustion temperature of the thermosensitive wire 130 , the thermosensitive wire 130 burns, thereby triggering the first fire fighting module 108 to release the fire extinguishing agent through the release mechanism 118 .

[0125] In one embodiment, when the heat-sensitive wire 130 burns, the heat generated by the combustion can be transferred to the fire extinguishing agent storage chamber, thereby activating the fire extinguishing agent, and the release mechanism 118 can release the fire extinguishing agent into the chamber where the first battery module 104 is located.

[0126] In some embodiments, please combine Figure 6 The thermal line 130 is covered with a glass fiber tube 132 .

[0127] Therefore, the glass fiber tube 132 can play a protective role, buffer mechanical stress, prevent chemical corrosion, prevent the thermal wire 130 from breaking, etc., and ensure that the trigger signal can be transmitted in time.

[0128] Specifically, the integrated energy storage device 100 may need to be transported from a factory, store, or other place to a user's home. During transportation and handling, the integrated energy storage device 100 will vibrate and generate mechanical stress. A fiberglass tube 132 is provided on the outer cover of the thermal wire 130. The fiberglass tube 132 buffers the mechanical stress on the thermal wire 130, thereby preventing the thermal wire 130 from breaking due to mechanical stress to a certain extent, causing the passive fire protection function to fail.

[0129] The integrated energy storage device 100 may be placed outdoors for extended periods (e.g., on a balcony). Factors such as the outdoor temperature and humidity may cause chemical corrosion and breakage of the thermal wire 130. A fiberglass tube 132 is provided around the thermal wire 130, isolating it from the external environment. This, to a certain extent, prevents chemical corrosion and breakage of the thermal wire 130, which could render the passive fire protection function ineffective.

[0130] In summary, it can be ensured that when the fire detection area 120 meets the fire triggering condition, the thermal line 130 can be triggered and transmit the triggering signal in time.

[0131] Specifically, in one embodiment, the fire detection area 120 is located inside the first battery module 104. When a thermal runaway state 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, causing the release mechanism 118 to release the fire extinguishing agent into the chamber where the first battery module 104 is located, thereby suppressing the initial thermal runaway state and preventing the spread of the thermal runaway state.

[0132] In one embodiment, please combine Figure 3 The fire detection area 120 is located in the electrode area of ​​the first battery module 104. Thus, the response speed of the trigger mechanism 116 is further improved.

[0133] Specifically, the first battery module 104 includes a plurality of battery cells 114, each of which includes a battery body 134, a positive electrode 136, and a negative electrode 138. Figure 7 The positive electrode 136 and the negative electrode 138 are located at opposite ends of the cell body 134, and the electrode area can refer to the side of the cell 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 can refer to the side of the cell 114 where the positive and negative electrodes 138 are located.

[0134] When the integrated energy storage device 100 is operating, it charges or discharges the battery cells 114. Current flows through the positive electrode 136 and the negative electrode 138, which generate a significant amount of heat. When the battery cells 114 experience thermal runaway, the temperatures of the positive electrode 136 and the negative electrode 138 are typically high. The fire detection area 120 is the electrode area of ​​the first battery module 104, allowing the heat from the thermal runaway state to be quickly and promptly transferred to the trigger mechanism 116, causing the trigger mechanism 116 to generate a trigger signal, thereby causing the release mechanism 118 to promptly release the fire extinguishing agent into the chamber containing the first battery module 104.

[0135] In addition, the battery cell 114 also includes an explosion-proof valve 140, which is typically located on the side of the battery cell body 134 where the electrodes are located. When the battery cell 114 experiences thermal runaway, the explosion-proof valve 140 may eject high-temperature and high-pressure substances, allowing the trigger mechanism 116 to respond quickly and generate a trigger signal.

[0136] In some embodiments, please combine Figure 3 and Figure 4The integrated energy storage device 100 also includes a first battery management and control board 126, which is electrically connected to the first battery module 104 and is configured to monitor the battery status information of the first battery module 104. The trigger mechanism 116 includes an active trigger mechanism, which is electrically connected to the first battery management and control board 126. When the first battery management and control board 126 detects that the battery status information is in a thermal runaway state, it sends a control signal to the active trigger mechanism. In response to the control signal, the active trigger mechanism triggers the first fire protection module 108 to release the fire extinguishing agent via the release mechanism 118.

[0137] In this way, the active triggering mode of the energy storage integrated machine 100 can be realized.

[0138] Optionally, the first battery management control board 126 is secured within the radiator housing 112 via a bracket plate 142. The bracket plate 142 is located between the first battery management control board 126 and the inverter circuit board 106. The bracket plate 142 can isolate the heat generated by the inverter circuit board 106 from being transferred to the first battery management control board 126, thereby, to a certain extent, avoiding or reducing the adverse effects of the heat generated by the inverter circuit board 106 on the first battery management control board 126.

[0139] The integrated energy storage device 100 also includes a busbar assembly and a sampling assembly. The busbar assembly is electrically connected to the multiple battery cells 114, thereby forming a series, parallel, or mixed electrical connection between the multiple battery cells 114. The sampling assembly can be connected to the busbar assembly and the first battery management control board 126. The first battery management control board 126 monitors the battery status information of the first battery module 104 through the sampling assembly. Battery status information includes but is not limited to current, voltage, and temperature.

[0140] In one embodiment, when the current is greater than or equal to a set current, the battery status information can be considered to be in a thermal runaway state. In one embodiment, when the temperature is greater than or equal to a set temperature, the battery status information can be considered to be in a thermal runaway state. The first battery management control board 126 sends a control signal to the active trigger mechanism.

[0141] The active trigger mechanism is electrically connected to the first battery management control board 126. The active trigger mechanism can receive a control signal sent by the first battery management control board 126. In response to the received control signal, the active trigger mechanism triggers the first fire fighting module 108 to release the fire extinguishing agent to the chamber where the first battery module 104 is located through the release mechanism 118.

[0142] In some embodiments, the active trigger mechanism is an electric initiator, and the control signal is an electric start signal, which includes a current or voltage signal generated when switching from a closed state to an open state, or a current or voltage signal generated when switching from an open state to a closed state.

[0143] Thus, the active triggering mechanism can be triggered by the electrical starting signal to trigger the first fire fighting module 108 to release the fire extinguishing agent through the release mechanism 118 .

[0144] Specifically, the electric initiator can be disposed in the module body of the first fire protection module 108 and can be connected to the dry node of the first battery management control board 126 through the wiring harness 144.

[0145] 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. When the battery status information indicates a thermal runaway state, the detection circuit can switch from the closed state to the open state, thereby causing the first battery management control board 126 to output a current or voltage signal.

[0146] Optionally, when the battery status information is in a non-thermal runaway state, the detection circuit is in a disconnected state. When the battery status information is in a thermal runaway state, the detection circuit can be switched from a disconnected state to a closed state, so that the first battery management control board 126 outputs a current or voltage signal.

[0147] When the battery status information is in a thermal runaway state, the first battery management control board 126 can transmit an electric starting signal to the electric initiator through the wiring harness 144, and the electric initiator triggers the first fire fighting module 108 to release the fire extinguishing agent to the chamber where the first battery module 104 is located through the release mechanism 118.

[0148] Optionally, combine Figure 5 A connecting portion 145 is provided on the module body of the first fire fighting module 108 , and the electric initiator can be connected to the wiring harness 144 through the connecting portion 145 .

[0149] In some embodiments, please combine Figure 6 The wiring harness 144 connected to the electric initiator is provided with a glass fiber tube 132 on the outer shell.

[0150] Therefore, the fiberglass tube 132 can play a protective role, buffer mechanical stress, protect against chemical corrosion, prevent the wiring harness 144 from breaking, etc., and ensure that the electric starting signal can be transmitted in time.

[0151] Specifically, the integrated energy storage device 100 may need to be transported from factories, stores, and other places to the user's home. During transportation and handling, the integrated energy storage device 100 will vibrate and generate mechanical stress. The wiring harness 144 connected to the electric initiator is covered with a fiberglass tube 132. The fiberglass tube 132 buffers the mechanical stress on the wiring harness 144, thereby preventing the wiring harness 144 from breaking due to mechanical stress to a certain extent, causing the active fire-fighting function to fail.

[0152] The energy storage device 100 may be placed outdoors for extended periods (e.g., on a balcony). Factors such as the outdoor temperature and humidity may cause chemical corrosion and breakage of the wiring harness 144. A fiberglass tube 132 is provided around the wiring harness 144 to isolate it from the external environment, thus preventing chemical corrosion and breakage that could cause the active firefighting function to fail.

[0153] In summary, it can be ensured that when the battery status information is in a thermal runaway state, the wiring harness 144 can transmit the electric starting signal to the electric initiator in a timely manner.

[0154] In some embodiments, please combine Figure 5 The module body of the first fire protection module 108 is flat.

[0155] Therefore, there is no need to configure additional space or too much additional space for the module body of the first fire protection module 108, which is conducive to maintaining the compactness of the energy storage integrated machine 100.

[0156] Specifically, the module body of the first fire-fighting module 108 may be a first module body 108a, and a fire extinguishing agent storage compartment is provided in the module body of the first fire-fighting module 108. The release mechanism 118 may 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 first fire-fighting module 108 occupies a large proportion of the total volume of the first fire-fighting module 108. When the first fire-fighting module 108 is installed, more space is required to place the module body. The first module body 108a is flat, and the module body can be set in the original flat space in the integrated machine case 102, or in the original flat space that has been slightly enlarged, which is conducive to maintaining the compactness of the energy storage integrated machine 100.

[0157] 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 housing 110 .

[0158] Thus, the module body of the first fire protection module 108 can be arranged close to the first battery module 104 , so that the first fire protection module 108 can quickly respond to the thermal runaway state of the first battery module 104 .

[0159] Specifically, the first battery module 104 is housed within the first battery box housing 110, with the inner wall of the first battery box housing 110 facing the first battery module 104. The main body of the first fire protection module 108 is secured to the inner wall of the first battery box housing 110, thereby placing the main body of the first fire protection module 108 closer to the first battery module 104. When the fire detection zone 120 meets the fire triggering conditions, the trigger mechanism 116 can promptly generate a trigger signal, thereby allowing the fire extinguishing agent released by the release mechanism 118 to reach the first battery module 104 more quickly, thereby more quickly suppressing the thermal runaway condition.

[0160] The module body of the first fire protection module 108 can be fixed to the inner wall surface of the first battery box housing 110 by means including but not limited to screws, snaps, etc.

[0161] In some embodiments, the distance between the inner wall surface where the module body of the first fire protection module 108 is installed and the first battery module 104 is greater than the installation distance of the module body of the first fire protection module 108 .

[0162] In this way, the fire extinguishing agent can be released more smoothly and efficiently into the cavity where the first battery module 104 is located.

[0163] Specifically, the release mechanism 118 can be located on the surface of the module body of the first fire protection module 108. To improve the operating efficiency of the first fire protection module 108, the module body of the first fire protection module 108 has a required installation distance. This installation distance requirement enables the release mechanism 118 to more efficiently and smoothly release the fire extinguishing agent into the chamber where the first battery module 104 is located. Therefore, the distance between the inner wall where the module body of the first fire protection module 108 is installed and the first battery module 104 is greater than the installation distance of the module body of the first fire protection module 108, thereby enabling the fire extinguishing agent to be released more smoothly and efficiently into the chamber where the first battery module 104 is located. In one example, the installation distance requirement is that the release mechanism 118 (e.g., the nozzle 146) is unobstructed within 0.05 meters.

[0164] In some embodiments, please combine Figure 5 The release mechanism 118 includes a nozzle 146 , which is located on the housing of the first fire protection module 108 , and the nozzle 146 is arranged close to the first battery module 104 .

[0165] Thereby, the fire extinguishing accuracy of the fire extinguishing agent can be improved.

[0166] Specifically, in one embodiment, the main body of the first fire protection module 108 is flat and cylindrical, and the nozzle 146 can be disposed on a circumferential side of the module main body. The central axis of the nozzle 146 is parallel to the length of the cell body 134 of the battery cell 114, so that the nozzle 146 is located close to the first battery module 104.

[0167] In one embodiment, the central axis of the nozzle 146 may form an angle with the length direction of the battery cell body 134 of the battery cell unit 114, and the angle may be 90 degrees or an acute angle.

[0168] It is understandable that the present application does not limit the shape of the module body of the first fire protection module 108 .

[0169] In some embodiments, please combine Figure 3 and Figure 4 The integrated chassis 102 also includes a middle partition 148, which is used to separate the integrated chassis 102 into a first chamber 150 and a second chamber 152. The first chamber 150 is formed by the first battery box shell 110 and the middle partition 148, and the second chamber 152 is formed by the radiator shell 112 and the middle partition 148.

[0170] Therefore, after the fire extinguishing agent is released, the middle partition 148 can gather the flame retardant material in the first chamber 150, and keep the fire extinguishing agent concentration in the first chamber 150 greater than a certain threshold within a certain period of time, and give priority to the flame retardant treatment of the most dangerous first battery module 104. Then, the flame retardant material can diffuse to other components in the second chamber 152 through the gap between the middle partition 148 and the integrated chassis 102 and / or the wire groove opening of the middle partition 148, thereby achieving a better fire extinguishing effect.

[0171] Specifically, the middle partition 148 can play the role of fixing the first battery module 104. After the middle partition 148 is installed and fixed to the first battery box shell 110, it will apply force in the direction of the first battery module 104 to prevent the first battery module 104 from shaking. Optionally, the side of the first battery box shell 110 facing the radiator shell 112 is an open side, and the middle partition 148 can be arranged on the open side, thereby enclosing the first battery box shell 110 to form a first chamber 150. A gap is formed between the middle partition 148 and the inner wall surface of the first battery box shell 110. The middle partition 148 is provided with a wire groove opening, and the wire groove opening is for the connection wires between the first battery module 104 and the first battery management control board 126 to pass through. When the energy storage device 100 operates normally, the middle partition 148 can separate the first battery module 104 from the first battery management control board 126 , thereby reducing or avoiding the adverse effects of heat generated by the first battery module 104 on the first battery management control board 126 .

[0172] The first battery module 104 is located in the first chamber 150, while 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 zone 120 meets the fire trigger condition, the trigger mechanism 116 generates a trigger signal, and the release mechanism 118 responds to the trigger signal by releasing fire extinguishing agent into the first chamber 150. The released fire extinguishing agent preferentially accumulates in the first chamber 150, providing a flame retardant treatment to the first battery module 104. The middle partition 148 prolongs the retention time of the fire extinguishing agent in the chamber where the first battery module 104 is located. As the fire extinguishing agent accumulates in the first chamber 150, it can diffuse into the second chamber 152 through the gap between the middle partition 148 and the inner wall of the first battery box housing 110, and / or the wire trough openings of the middle partition 148, thereby providing a flame retardant treatment to the first battery management control board 126 and the inverter circuit board 106 located in the second chamber 152, thereby achieving a better fire extinguishing effect.

[0173] The first fire fighting module 108 is located in the first chamber 150 .

[0174] Therefore, when the fire detection area 120 meets the fire triggering condition, the release mechanism 118 can directly release the fire extinguishing agent into the first chamber 150, thereby improving the fire extinguishing efficiency.

[0175] Specifically, the first fire protection module 108 is located within the first chamber 150, with the release mechanism 118 also located within the first chamber 150. When the fire detection zone 120 meets the fire triggering conditions, the trigger mechanism 116 can generate a trigger signal. In response to the trigger signal, the release mechanism 118 directly releases the fire extinguishing agent into the first chamber 150. The fire extinguishing agent can immediately contact the first battery module 104, providing a flame retardant treatment. This reduces the contact time between the fire extinguishing agent and the first battery module 104 after discharge, thereby improving fire extinguishing efficiency.

[0176] In some embodiments, please combine Figure 1 and Figure 2 A breathing valve 154 is provided on the radiator housing 112 .

[0177] Thereby, the fire extinguishing effect can be fully ensured.

[0178] Specifically, in related technologies, a breather valve is used to balance the internal and external pressures of energy storage devices, preventing explosions caused by a sudden surge in internal pressure during thermal runaway of a battery cell. However, if the breather valve 154 is located on the first battery box housing 110 after the fire extinguishing agent is released, the fire extinguishing agent will leak out quickly, reducing fire extinguishing efficiency.

[0179] In this embodiment, 1) the position of the breathing valve 154 is relocated, and the breathing valve 154 is set in the radiator housing 112, away from the chamber where the first battery module 104 is located, to avoid the problem that part of the released fire extinguishing agent directly enters the second chamber 152, causing the fire extinguishing agent in the first chamber 150 to be reduced and the fire extinguishing effect to be worsened.

[0180] 2) Adding an air pressure buffer structure: A middle partition 148 is installed between the first battery compartment housing 110 and the radiator housing 112 to create a buffer that blocks the airflow path. Released fire extinguishing agent must diffuse into the gap between the first battery compartment housing 110 and the middle partition 148 and / or the wire slot opening in the middle partition 148 before entering the second chamber 152, thereby extending the fire extinguishing agent's residence time within the first chamber 150. This design prolongs the fire extinguishing agent's residence time within the first chamber 150 and increases its dosage, ensuring a sufficient fire extinguishing effect.

[0181] In some embodiments, please combine Figures 1 to 4 The radiator housing 112 is further provided with a photovoltaic connection terminal 156 , a grid connection terminal 158 and an AC load output terminal 160 .

[0182] This can reduce the use of wires and the like, thereby reducing costs.

[0183] Specifically, the inverter circuit board 106 serves as the circuit board for outputting and inputting power to the energy storage device 100. The photovoltaic connection terminals 156, grid-connection terminals 158, and AC load output terminals 160 are located within the radiator housing 112. This reduces the distance between the connection terminals and the inverter circuit board 106, thereby reducing the use of wires and other materials and lowering costs. Furthermore, the proximity of the connection terminals to the inverter circuit board 106 facilitates connection.

[0184] The photovoltaic connection terminal 156 can be connected to the photovoltaic panel, and the direct current generated by the photovoltaic panel can be input into the inverter circuit board 106 through the photovoltaic connection terminal 156. The inverter circuit board 106 can boost the voltage of the direct current and convert it into a voltage suitable for charging the first battery tube module and / or the energy storage and power pack 200. The first battery management control board 126 can use the converted voltage to charge the first battery module 104 and / or the energy storage and power pack 200.

[0185] Grid-connection terminal 158 can be connected to the grid, allowing the energy storage device 100 to be connected to the grid, achieving bidirectional flow and intelligent scheduling of electrical energy. AC load output terminal 160 can be connected to an AC load. Inverter circuit board 106 can convert the DC power output by first battery module 104 or the DC power output by energy storage and charging pack 200 into AC power suitable for powering the AC load.

[0186] In the embodiment of the present application, the above-mentioned connecting terminals are all outwardly protruding parts. In terms of design, the left and right width of the radiator housing 112 plus the length of the connecting terminals cannot exceed the left and right width of the first battery box housing 110 by too much, because the stress of the connecting terminals is relatively weak and they may break under stress. If the connecting terminals protrude too much, there is a possibility of breaking during transportation and handling of the connecting terminals. Based on this consideration, the radiator housing 112 has a compressed left and right dimension due to the reserved space for the connecting terminals, and the left and right dimension of the inverter circuit board 106 fixed to the radiator housing 112 is naturally compressed as well. However, in order to ensure the functional integrity of the inverter circuit board 106 and electrical isolation requirements such as EMC, the layout area required by the components cannot be excessively compressed, that is, the overall area of ​​the inverter circuit board 106 cannot be compressed. Therefore, after the left and right dimensions are compressed, the dimensions in the vertical height direction need to be expanded.

[0187] Based on the above design considerations, after the radiator housing 112 is expanded in the vertical direction, the first battery box housing 110 is adapted to the shape and size of the radiator housing 112. The first battery box housing 110 has redundant space in the height direction, and the first battery module 104 is usually fixed to the lower inner wall of the first battery box housing 110. Figure 3 In the illustrated embodiment, the preferred installation location of the module body of the first fire protection module 108 is fixed to the upper inner wall surface of the first battery compartment housing 110. It is understood that in other embodiments, the module body of the first fire protection module 108 may also be provided on other inner wall surfaces other than the upper inner wall surface and the lower inner wall surface of the first battery compartment housing 110.

[0188] Optionally, the first battery module 104 includes a first battery bracket 162 and a plurality of battery cells 114 , wherein the first battery bracket 162 fixes the plurality of battery cells 114 to form the first battery module 104 . The module body of the first fire protection module 108 faces the first battery bracket 162 , where the battery cells 114 are exposed.

[0189] In certain embodiments, the fire extinguishing agent is an aerosol fire extinguishing agent.

[0190] As a result, the fire extinguishing agent can be stored at normal pressure without laying a pipeline network. The aerosol fire extinguishing agent is non-toxic, non-corrosive, does not damage the atmospheric ozone layer, and is green and environmentally friendly.

[0191] Alternatively, the aerosol fire extinguishing agent can be a thermal aerosol. The fire extinguishing mechanism of thermal aerosols is primarily manifested in two aspects: the cooling effect of endothermic decomposition, and the chemical inhibition of the gas and solid phases, which work synergistically. Furthermore, the gaseous components in the aerosol fire extinguishing agent product also play a supporting role.

[0192] Specifically, (1) The cooling effect of endothermic decomposition: The cooling effect of hot aerosol fire extinguishing agents mainly relies on the endothermic decomposition of metal oxides and carbonates. The amount of heat released by any fire in a short period of time is limited. If the solid particles in the aerosol can absorb a portion of the heat released by the fire source in a short period of time, the temperature of the flame will be reduced, and the heat radiated to the burning surface and used to break down the vaporized combustible molecules into free radicals will be reduced, and the combustion reaction will be suppressed to a certain extent.

[0193] (2) Gas phase chemical inhibition

[0194] Under the action of heat, the gasified metal ions such as Sr, K, Mg or cations that have lost electrons decomposed by the hot aerosol fire extinguishing agent exist in the form of steam, and undergo multiple chain reactions with the active groups H·, ·OH and O· in the combustion. The following takes Sr as an example:

[0195] Sr+2·OH→Sr(OH)2; Sr+O·→SrO; Sr(OH)2+2H·→Sr+2H2O.

[0196] This process is repeated, and the active groups in combustion are consumed in large quantities, the concentration continues to decrease, and combustion is suppressed.

[0197] (3) Solid-phase chemical inhibition

[0198] The solid particles in the hot aerosol fire extinguishing agent can adsorb the chain reaction intermediates OH, H and O, and catalyze them to re-form stable molecules, thereby interrupting the branch chain reaction of the combustion process. The following takes K as an example:

[0199] K2O(s)+2H(g)→2KOH(s); KOH(s)+OH(g)→KO(s)+H2O(g);

[0200] K2O(s)+O(g)→2KO(s); KO(s)+H(g)→KOH.

[0201] In the above-mentioned fire extinguishing effect, several fire extinguishing mechanisms interact and work synergistically, but the gas transmission effect and the heat absorption and cooling effect of metal oxides or carbonates only play auxiliary roles, and the main fire extinguishing effect still depends on the chemical inhibition of gas and solid phases.

[0202] When the energy storage integrated machine 100 is in a thermal runaway state, the module body of the first fire-fighting module 108 ignites the thermistor 130 after receiving an electric start signal or an open flame. The electric initiator or the thermistor 130 burns and activates the aerosol generator in the module body. The heat released by the aerosol generator through the redox reaction decomposes the chemical coolant, so that the aerosol generator and the coolant jointly participate in extinguishing the fire.

[0203] Please combine Figures 8 to 11 The present application provides an energy storage power pack 200 for electrically connecting to an integrated energy storage device 100 to expand the capacity of the integrated energy storage device 100. The energy storage power pack 200 includes a power pack housing 202, a second battery module 204, and a second fire protection module 206. The power pack housing 202 includes a detachably connected second battery box housing 208 and a cover 210. The second battery box housing 208 holds the second battery module 204. The cover 210 closes an installation opening 212 of the second battery box housing 208.

[0204] The second battery module 204 includes multiple battery cells 114, which are used to store and output electricity. A second firefighting module 206 is located within the power pack housing 202 and includes a trigger mechanism 116, a fire extinguishing agent storage compartment, and a release mechanism 118. The trigger mechanism 116 is located within the fire detection area 120 within the power pack housing 202 and generates a trigger signal when the fire detection area 120 meets the fire trigger condition. The fire extinguishing agent storage compartment is used to store fire extinguishing agent. The release mechanism 118 releases the fire extinguishing agent into the chamber containing the second battery module 204 in response to the trigger signal from the trigger mechanism 116.

[0205] The energy storage power pack 200 takes into account the characteristics of consumer-oriented energy storage products and is a fire protection solution specially designed for consumer-oriented energy storage products. It 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 device 300.

[0206] Specifically, the energy storage and power-up pack 200 can expand the capacity of the integrated energy storage device 100. The energy storage and power-up pack 200 and the integrated energy storage device 100 can constitute the energy storage device 300. In one embodiment, the integrated energy storage device 100 can be used alone. In one embodiment, the energy storage and power-up pack 200 and the integrated energy storage device 100 can be used in combination. The integrated energy storage device 100 can be used in combination with at least one energy storage and power-up pack 200. This application does not limit the number of energy storage and power-up packs 200 included in the energy storage device 300.

[0207] The energy storage and charging pack 200 may include 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, so that the battery status information of the second battery module 204 can be transmitted 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 according to the battery status information of the second battery module 204, such as shutting down, charging and discharging.

[0208] Optionally, the second fire protection module 206 is disposed in an area adjacent to the second battery module 204 inside the power pack housing 202 .

[0209] In some embodiments, the second fire protection module 206 is a passive self-triggering fire protection module.

[0210] Therefore, the energy storage and charging pack 200 is more suitable for balcony photovoltaic energy storage products with smaller capacity.

[0211] Specifically, a passive, self-triggering firefighting module can be one that lacks an independent power source and can automatically release fire extinguishing agents in the event of thermal runaway within the energy storage and power pack 200. Therefore, even if the energy storage and power pack 200 is equipped with a second firefighting module 206, it will not consume substantial power from the energy storage and power pack 200, ensuring the long-term power storage and supply capabilities of the energy storage and power pack 200. This makes it particularly suitable for balcony photovoltaic energy storage systems with smaller capacity.

[0212] In some embodiments, the trigger mechanism 116 includes a passive trigger mechanism, which includes any one of a temperature detector, a smoke detector, and an air pressure detector.

[0213] In this way, the fire-fighting function can be triggered without consuming the power of the energy storage and charging pack 200.

[0214] Specifically, in one embodiment, the passive trigger mechanism can be self-triggered based on a physical / chemical mechanism. The passive trigger mechanism can be self-triggered based on a physical / chemical mechanism without the need for power supply, without consuming the energy storage and power pack 200, ensuring more power for the user.

[0215] In one embodiment, the passive trigger mechanism is self-triggered based on a physical mechanism. A physical self-triggered firefighting mechanism is a purely mechanical emergency firefighting technology that does not rely on electricity or control systems. It primarily uses the physical properties of the material itself (such as thermal sensitivity and pressure changes) to achieve automatic fire detection and release of fire extinguishing agents.

[0216] Specifically, the physical mechanism may include, but is not limited to, a thermal trigger mechanism and a pressure-linked trigger mechanism. The thermal trigger mechanism may mean that when the temperature of the fire detection zone 120 reaches or exceeds a set temperature, the higher temperature may cause the trigger mechanism 116 to generate a trigger signal, thereby causing the release mechanism 118 to release the fire extinguishing agent into the chamber where the second battery module 204 is located. Optionally, under the thermal trigger mechanism, the passive trigger mechanism may include a thermistor 130, which may be arranged in the fire detection zone 120. When the temperature detected by the fire reaches or exceeds the melting temperature of the thermistor 130, the release mechanism 118 releases the fire extinguishing agent into the chamber where the second battery module 204 is located in response to the trigger signal of the trigger mechanism 116.

[0217] The pressure-linked trigger mechanism may mean that when the pressure in the fire detection zone 120 reaches or exceeds a set pressure, the higher pressure can trigger the trigger mechanism 116 to generate a trigger signal, thereby causing the release mechanism 118 to release the fire extinguishing agent into the chamber where the second battery module 204 is located. Optionally, under the pressure-linked trigger mechanism, the passive trigger mechanism may include a mechanical pressure relief valve. When the battery cell 114 thermally runs away, it will release high-pressure gas outward. When the pressure is greater than or equal to the set pressure, the mechanical pressure relief valve automatically opens and links the release mechanism 118 to release the fire extinguishing agent into the chamber where the second battery module 204 is located.

[0218] In one embodiment, the passive trigger mechanism is based on a self-triggering chemical mechanism. A chemical self-triggering firefighting mechanism utilizes the inherent physical and chemical properties of a material (such as thermal degradation and chemical reaction gas production) to automatically detect fires and release extinguishing agents. Specifically, the firefighting system is activated by the autonomous reaction of chemicals at high temperatures or under specific conditions, without the need for external power or control system intervention.

[0219] Specifically, the chemical self-triggering mechanism may include a thermosensitive polymer explosion mechanism and a chemical decomposition gas drive. Under the thermosensitive polymer explosion mechanism, the passive triggering mechanism may include a fire detection tube, in which a low-melting-point copolymer (such as ethylene-vinyl acetate) is provided. The fire detection tube is located in the fire detection area 120. When the temperature of the fire detection area 120 reaches or exceeds the set temperature (such as 72°C–90°C), the polymer molecular chain breaks and softens, and the pressure of the internal driving gas (such as nitrogen) breaks through the tube wall limit, triggering a directional explosion. The explosion instantly drives the fire extinguishing agent to spray precisely through the crack to the heat source point.

[0220] Driven by chemical decomposition and gas production, the passive trigger mechanism may include a gas generating agent. A solid gas generating agent (such as nitrocellulose) is added to the fire extinguishing agent storage chamber. When heat generated by thermal runaway is transferred to the fire extinguishing agent storage chamber, the gas generating agent rapidly decomposes and releases a large amount of gas (such as CO2 / N2), which propels the fire extinguishing agent out at high speed.

[0221] In one embodiment, the passive triggering mechanism includes any one of a temperature detector, a smoke detector, and an air pressure detector.

[0222] Thus, the fire-fighting function can be passively triggered by any one of temperature, smoke and air pressure.

[0223] Specifically, in one embodiment, the passive trigger mechanism includes a temperature detector, which may be located in the fire detection area 120 and configured to detect the temperature of the fire detection area 120. When the temperature of the fire detection area 120 is greater than or equal to a set temperature, the high temperature may cause the passive trigger mechanism to generate a trigger signal, thereby causing the release mechanism 118 to release the fire extinguishing agent into the chamber where the second battery module 204 is located.

[0224] In one embodiment, the passive trigger mechanism includes a smoke detector, which may be located in the fire detection zone 120 and configured to detect the smoke concentration in the fire detection zone 120. When the smoke concentration in the fire detection zone 120 is greater than or equal to a set concentration, the high smoke concentration may cause the passive trigger mechanism to generate a trigger signal, thereby causing the release mechanism 118 to release the fire extinguishing agent into the chamber where the second battery module 204 is located.

[0225] In one embodiment, the passive trigger mechanism includes an air pressure detector, which may be located in the fire detection zone 120 and configured to detect the air pressure in the fire detection zone 120. When the air pressure in the fire detection zone 120 is greater than or equal to a set pressure, the high pressure may cause the passive trigger mechanism to generate a trigger signal, thereby causing the release mechanism 118 to release the fire extinguishing agent into the chamber where the second battery module 204 is located.

[0226] In some embodiments, the temperature detector is a flexible temperature detector. Figure 6 The flexible temperature detector includes a thermistor 130, which is arranged in the fire detection area 120. When the temperature of the fire detection area 120 exceeds or equals the combustion temperature of the thermistor 130, it burns, thereby triggering the second fire module 206 to release the fire extinguishing agent through the release mechanism 118.

[0227] This facilitates the arrangement of the temperature detector.

[0228] Specifically, because the temperature detector is flexible, it can be freely placed in any fire detection zone 120 within the energy storage and power pack 200 without changing the internal space of the energy storage and power pack 200, or without significantly changing the internal space of the energy storage and power pack 200. This prevents the temperature detector from occupying too much space within the power pack housing 202, helping to maintain the compactness of the energy storage and power pack 200. Flexible temperature detectors are particularly suitable for products with very limited space, such as balcony energy storage.

[0229] For example, the flexible temperature detector can be bent according to the internal space of the energy storage and power pack 200 and arranged in the original internal space of the energy storage and power pack 200, so that the flexible temperature detector can be set in the fire detection area 120 without setting up additional space for the flexible temperature detector.

[0230] The flexible temperature detector includes a thermistor 130 , whereby combustion is triggered when the temperature of the thermistor 130 is too high, which is simple and efficient and more suitable for balcony energy storage products.

[0231] Specifically, when the temperature of the fire detection zone 120 exceeds or is equal to the combustion temperature of the thermosensitive wire 130 , the thermosensitive wire 130 burns, thereby triggering the second fire module 206 to release the fire extinguishing agent through the release mechanism 118 .

[0232] In one embodiment, when the heat-sensitive wire 130 burns, the heat generated by the combustion can be transferred to the fire extinguishing agent storage chamber, thereby activating the fire extinguishing agent, and the release mechanism 118 can release the fire extinguishing agent into the chamber where the second battery module 204 is located.

[0233] In some embodiments, please combine Figure 6 The thermal line 130 is covered with a glass fiber tube 132 .

[0234] Therefore, the glass fiber tube 132 can play a protective role, buffer mechanical stress, prevent chemical corrosion, prevent the thermal wire 130 from breaking, etc., and ensure that the trigger signal can be transmitted in time.

[0235] Specifically, the energy storage and charging pack 200 may need to be transported from factories, stores, and other places to the user's home. During transportation and handling, the energy storage and charging pack 200 will vibrate and generate mechanical stress. The thermal wire 130 is covered with a fiberglass tube 132. The fiberglass tube 132 buffers the mechanical stress on the thermal wire 130, thereby preventing the thermal wire 130 from breaking due to mechanical stress to a certain extent, causing the passive fire protection function to fail.

[0236] The energy storage and charging pack 200 may be stored outdoors for extended periods (e.g., on a balcony). Factors such as the outdoor temperature and humidity may cause chemical corrosion and breakage of the thermal wire 130. A fiberglass tube 132 is provided over the thermal wire 130 to isolate it from the external environment, thus preventing chemical corrosion and breakage, which could render the passive fire protection system ineffective.

[0237] In summary, it can be ensured that when the fire detection area 120 meets the fire triggering condition, the thermal line 130 can be triggered and transmit the triggering signal in time.

[0238] In some embodiments, please combine Figure 9 and Figure 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 .

[0239] Thus, the trigger mechanism 116 can respond to the thermal runaway state of the second battery module 204 in a timely manner.

[0240] Specifically, in one embodiment, the fire detection area 120 is located inside the second battery module 204. When a thermal runaway state 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, causing the release mechanism 118 to release the fire extinguishing agent into the chamber where the second battery module 204 is located, thereby suppressing the initial thermal runaway state and preventing the spread of the thermal runaway state.

[0241] In one embodiment, the fire detection area 120 is located in the electrode area of ​​the second battery module 204 .

[0242] As a result, the response speed of the trigger mechanism 116 is further improved.

[0243] Specifically, the second battery module 204 includes a plurality of battery cells 114, each of which includes a battery body 134, a positive electrode 136, and a negative electrode 138. Figure 7 The positive electrode 136 and the negative electrode 138 are located at opposite ends of the cell body 134, and the electrode area can refer to the side of the cell 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 can refer to the side of the cell 114 where the positive and negative electrodes 138 are located.

[0244] When the energy storage and charging pack 200 is operating, it charges or discharges the battery cells 114. Current flows through the positive electrode 136 and the negative electrode 138, which generate a significant amount of heat. When a battery cell 114 experiences thermal runaway, the temperatures of the positive electrode 136 and the negative electrode 138 are typically high. The fire detection area 120 is the electrode area of ​​the second battery module 204, allowing the heat generated during thermal runaway to be quickly and promptly transferred to the trigger mechanism 116, causing it to generate a trigger signal, which in turn causes the release mechanism 118 to promptly release the fire extinguishing agent into the chamber containing the second battery module 204.

[0245] In addition, the cell 114 also includes an explosion-proof valve 140, which is typically located on the side of the cell body 134 where the electrodes are located. When the cell 114 experiences thermal runaway, the explosion-proof valve 140 may eject high-temperature, high-pressure material, allowing the trigger mechanism 116 to quickly respond and generate a trigger signal.

[0246] In certain embodiments, a thermal simulation test is performed within the power pack housing 202 of the energy storage power pack 200. The thermal simulation test determines the heat accumulation area within the power pack housing 202 during operation of the energy storage power pack 200. This heat accumulation area is selected as the fire detection area 120. In some embodiments, the fire detection area 120 may also be another location within the power pack housing 202 of the energy storage power pack 200, which may also be determined through experience or other means.

[0247] In some embodiments, please combine Figures 9 to 11The energy storage and charging pack 200 also includes a second battery management and control board 214, which is electrically connected to the second battery module 204 and is configured to monitor the battery status information of the second battery module 204. The trigger mechanism 116 includes an active trigger mechanism, which is electrically connected to the second battery management and control board 214. When the second battery management and control board 214 detects that the battery status information is in a thermal runaway state, it sends a control signal to the active trigger mechanism. In response to the control signal, the active trigger mechanism triggers the second fire protection module 206 to release the fire extinguishing agent via the release mechanism 118.

[0248] In this way, the active triggering mode of the energy storage and charging pack 200 can be realized.

[0249] The energy storage and charging pack 200 also includes a busbar assembly and a sampling assembly. The busbar assembly is electrically connected to the multiple battery cells 114, thereby forming a series, parallel, or mixed electrical connection between the multiple battery cells 114. The sampling assembly can be connected to the busbar assembly and the second battery management and control board 214. The second battery management and control board 214 monitors the battery status information of the second battery module 204 through the sampling assembly. Battery status information includes but is not limited to current, voltage, and temperature.

[0250] In one embodiment, when the current is greater than or equal to a set current, the battery status information can be considered to be in a thermal runaway state. In one embodiment, when the temperature is greater than or equal to a set temperature, the battery status information can be considered to be in a thermal runaway state. The second battery management control board 214 sends a control signal to the active trigger mechanism.

[0251] The active trigger mechanism is electrically connected to the second battery management control board 214. The active trigger mechanism can receive a control signal sent by the second battery management control board 214. In response to the received control signal, the active trigger mechanism triggers the second fire fighting module 206 to release the fire extinguishing agent to the chamber where the second battery module 204 is located through the release mechanism 118.

[0252] In some embodiments, the active trigger mechanism is an electric initiator, and the control signal is an electric start signal, which includes a current or voltage signal generated when switching from a closed state to an open state, or a current or voltage signal generated when switching from an open state to a closed state.

[0253] Thus, the active trigger mechanism can be triggered by the electrical start signal to trigger the second fire fighting module 206 to release the fire extinguishing agent through the release mechanism 118 .

[0254] Specifically, the electric initiator can be disposed in the module body of the second fire protection module 206 and can be connected to the dry node of the second battery management control board 214 through the wiring harness 144.

[0255] 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. When the battery status information indicates a thermal runaway state, the detection circuit can switch from the closed state to the open state, thereby causing the second battery management control board 214 to output a current or voltage signal.

[0256] Optionally, when the battery status information is in a non-thermal runaway state, the detection circuit is in a disconnected state. When the battery status information is in a thermal runaway state, the detection circuit can be switched from a disconnected state to a closed state, so that the second battery management control board 214 outputs a current or voltage signal.

[0257] When the battery status information is in a thermal runaway state, the second battery management control board 214 can transmit an electric starting signal to the electric initiator through the wiring harness 144, and the electric initiator triggers the second fire fighting module 206 to release the fire extinguishing agent to the chamber where the first battery module 104 is located through the release mechanism 118.

[0258] Optionally, combine Figure 5 A connecting portion 145 is provided on the module body of the second fire fighting module 206 , and the electric initiator can be connected to the wiring harness 144 through the connecting portion 145 .

[0259] In some embodiments, please combine Figure 6 The wiring harness 144 connected to the electric initiator is provided with a fiberglass tube 132 on its outer cover.

[0260] Therefore, the fiberglass tube 132 can play a protective role, buffer mechanical stress, protect against chemical corrosion, prevent the wiring harness 144 from breaking, etc., and ensure that the electric starting signal can be transmitted in time.

[0261] Specifically, the energy storage and charging pack 200 may need to be transported from factories, stores, and other places to the user's home. During transportation and handling, the energy storage and charging pack 200 will vibrate and generate mechanical stress. The wiring harness 144 connected to the electric initiator is covered with a fiberglass tube 132. The fiberglass tube 132 buffers the mechanical stress on the wiring harness 144, thereby preventing the wiring harness 144 from breaking due to mechanical stress to a certain extent, causing the active fire-fighting function to fail.

[0262] Energy storage and charging pack 200 may be stored outdoors for extended periods (e.g., on a balcony). Factors such as outdoor temperature and humidity may cause chemical corrosion and breakage of wiring harness 144. Wiring harness 144 is protected by a fiberglass tube 132, which isolates wiring harness 144 from the external environment. This, to a certain extent, prevents chemical corrosion and breakage of wiring harness 144, which could cause the active fire protection function to fail.

[0263] In summary, it can be ensured that when the battery status information is in a thermal runaway state, the wiring harness 144 can transmit the electric starting signal to the electric initiator in a timely manner.

[0264] In some embodiments, please combine Figure 5 The module body of the second fire protection module 206 is flat.

[0265] Therefore, there is no need to configure additional space or too much additional space for the module body of the second fire protection module 206, which is conducive to maintaining the compactness of the energy storage and power pack 200.

[0266] Specifically, the module body of the second fire protection module 206 is the second module body 206a. A fire extinguishing agent storage compartment is provided in 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 occupies a large proportion of the total volume of the second fire protection module 206. When the second fire protection module 206 is installed, more space is required to place the module body. The second module body 206a is flat, and the module body can be set in the original flat space in the power pack case 202, or in the original flat space that has been slightly enlarged, which is conducive to maintaining the compactness of the energy storage power pack 200.

[0267] Optionally, the second battery module 204 includes a second battery bracket 218 and a plurality of battery cells 114 , and the second battery bracket 218 fixes the plurality of battery cells 114 to form the second battery module 204 . The module body of the second fire protection module 206 faces the second battery bracket 218 , where the battery cells 114 are exposed.

[0268] In some embodiments, please combine Figure 9 The module body of the second fire protection module 206 is fixed on the inner wall surface of the second battery box shell 208.

[0269] Thus, the module body of the second fire protection module 206 can be arranged close to the second battery module 204 , so that the second fire protection module 206 can quickly respond to the thermal runaway state of the second battery module 204 .

[0270] Specifically, the second battery module 204 is housed within the second battery box housing 208, with the inner wall of the second battery box housing 208 facing the second battery module 204. The main body of the second fire protection module 206 is secured to the inner wall of the second battery box housing 208, thereby placing the main body of the second fire protection module 206 closer to the second battery module 204. When the fire detection zone 120 meets the fire triggering condition, the trigger mechanism 116 can promptly generate a trigger signal, thereby allowing the fire extinguishing agent released by the release mechanism 118 to reach the second battery module 204 more quickly, thereby more quickly suppressing the thermal runaway condition.

[0271] The module body of the second fire protection module 206 can be fixed to the inner wall surface of the second battery box housing 208 by means including but not limited to screws, snaps, etc.

[0272] In some embodiments, the distance between the inner wall surface where the module body of the second fire protection module 206 is installed and the second battery module 204 is greater than the installation distance of the module body of the second fire protection module 206 .

[0273] In this way, the fire extinguishing agent can be released more smoothly and efficiently into the chamber where the second battery module 204 is located.

[0274] Specifically, the release mechanism 118 can be located on the surface of the module body of the second fire protection module 206. To improve the operating efficiency of the second fire protection module 206, the module body of the second fire protection module 206 has a required installation distance. This installation distance requirement enables the release mechanism 118 to more efficiently and smoothly release the fire extinguishing agent into the chamber where the second battery module 204 is located. Therefore, the distance between the inner wall of 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, thereby ensuring smoother and more efficient release of the fire extinguishing agent into the chamber where the second battery module 204 is located. In one example, the installation distance requirement is that the release mechanism 118 (e.g., the nozzle 146) is unobstructed within 0.05 meters.

[0275] In some embodiments, please combine Figure 5 The release mechanism 118 includes a nozzle 146 , which is located on the housing of the second fire protection module 206 , and is disposed near the second battery module 204 .

[0276] Thereby, the fire extinguishing accuracy of the fire extinguishing agent can be improved.

[0277] Specifically, in one embodiment, the second fire protection module 206 has a flat cylindrical body, and the nozzle 146 can be located on a circumferential side of the module body's housing. The central axis of the nozzle 146 is parallel to the length of the cell body 134 of the battery cell 114, so that the nozzle 146 is located close to the second battery module 204.

[0278] In one embodiment, the central axis of the nozzle 146 may form an angle with the length direction of the battery cell body 134 of the battery cell unit 114, and the angle may be 90 degrees or an acute angle.

[0279] It is understandable that the present application does not limit the shape of the module body of the second fire protection module 206.

[0280] In some embodiments, please combine Figure 10, a breathing valve 154 is provided on the cover plate 210 .

[0281] In this way, it can be ensured that the energy storage and charging pack 200 will not cause an explosion in a thermal runaway state.

[0282] Specifically, the breathing valve 154 is used to balance the pressure inside and outside the power pack housing 202, preventing a sudden increase in internal pressure and explosion caused by thermal runaway of the battery cells 114. Specifically, when the pressure inside the power pack housing 202 is high, the high pressure can be released to the outside of the power pack housing 202 through the breathing valve 154, thereby balancing the pressure inside and outside the power pack housing 202. In other embodiments, the breathing valve 154 is provided on the second battery compartment housing 208.

[0283] In certain embodiments, the fire extinguishing agent is an aerosol fire extinguishing agent.

[0284] As a result, the fire extinguishing agent can be stored at normal pressure without laying a pipeline network. The aerosol fire extinguishing agent is non-toxic, non-corrosive, does not damage the atmospheric ozone layer, and is green and environmentally friendly.

[0285] Alternatively, the aerosol fire extinguishing agent can be a thermal aerosol fire extinguishing agent. The fire extinguishing mechanism of thermal aerosols is primarily manifested in two aspects: the cooling effect of endothermic decomposition, and the chemical inhibition of the gas and solid phases, which work synergistically. Furthermore, the gaseous components in the aerosol fire extinguishing agent product also play a supporting role. The specific fire extinguishing mechanism of aerosol fire extinguishing agents can be found in the description of the aforementioned embodiments and will not be elaborated on here.

[0286] Optionally, both the integrated energy storage device 100 and the energy storage and charging pack 200 include foam 220. In the integrated energy storage device 100, the foam 220 may be positioned between the inner wall of the first battery box housing 110 and the first battery module 104, as well as between the first battery module 104 and the middle separator 148. In the energy storage and charging pack 200, the foam 220 is positioned between the inner wall of the second battery box housing 208 and the second battery module 204, as well as between the second battery module 204 and the module bracket 222, thereby cushioning the impact forces exerted on the battery modules. The module bracket 222 can secure the second battery module 204. Once secured to the second battery box housing 208, the module bracket 222 applies force toward the second battery module 204, preventing the second battery module 204 from shaking. Optionally, a protective cover 224 is also provided over the AC load output terminal 160.

[0287] Please combine Figure 12 The energy storage device 300 provided in the embodiments of the present application includes an integrated energy storage device 100 according to any of the above embodiments and at least one energy storage power-up pack 200 according to any of the above embodiments. The energy storage power-up pack 200 is used to electrically connect to the integrated energy storage device 100 to expand the capacity of the integrated energy storage device 100.

[0288] The energy storage device 300 takes into account the characteristics of consumer-oriented energy storage products and has a fire protection solution specially designed for consumer-oriented energy storage products. The fire protection solution adopts a built-in fire protection design that is compact, economical, maintenance-free, efficient, reliable, and does not affect the appearance of the energy storage device 300.

[0289] In some embodiments, please combine Figure 12 The energy storage integrated machine 100 and the energy storage and power pack 200 are stacked up and down, and the energy storage integrated machine 100 and the energy storage and power pack 200 achieve electrical connection expansion by stacking the blind plug terminals 216 of the adjacent contact surfaces, or achieve electrical connection expansion through cables.

[0290] In this way, the horizontal space occupied by the energy storage device 300 can be reduced, thereby improving the user experience.

[0291] Specifically, the energy storage device 100 and the energy storage and charging pack 200 are stacked up and down, and the vertical space can be used to place the energy storage device 300, reducing the horizontal space occupied by the energy storage device 300. This makes the user feel that the energy storage device 300 does not take up too much space in the home, improves the user experience, and is conducive to the promotion of the energy storage device 300.

[0292] exist Figure 12 In the illustrated embodiment, the energy storage device 300 includes an integrated energy storage device 100 and two energy storage power packs 200. The integrated energy storage device 100 is located at the top layer of the energy storage device 300, and the two energy storage power packs 200 are stacked in sequence from top to bottom. The energy storage power pack 200 in the middle is electrically connected to the integrated energy storage device 100 on the upper layer by stacking the blind plug terminals 216 or cables of the adjacent contact surfaces. The energy storage power pack 200 on the bottom layer is electrically connected to the energy storage power pack 200 on the middle layer by stacking the blind plug terminals 216 or cables of the adjacent contact surfaces, thereby enabling the energy storage power pack 200 on the bottom layer to be electrically connected to the integrated energy storage device 100 on the upper layer. It is understandable that in other embodiments, the energy storage power pack 200 on the bottom layer can also be directly electrically connected to the integrated energy storage device 100 on the upper layer for expansion, and this application is not limited to this.

[0293] In one example, the battery capacity of an energy storage integrated machine 100 is 2KWH, the battery capacity of an energy storage power pack 200 is 2KWH, and Figure 12 The capacity of the energy storage device 300 shown is 6KWH after stacking and expansion. Users can also purchase and configure the number of energy storage and power packs 200 according to their own household electricity needs.

[0294] In other embodiments, the location of the integrated energy storage device 100 is not limited to being located at the topmost layer of the energy storage device 300, but may also be located at other heights of the energy storage device 300, which is not limited in this application.

[0295] In one embodiment, please combine Figure 8 and Figure 9 The integrated energy storage device 100 and the energy storage power pack 200 both include blind-plug terminals 216. In the vertical direction, the integrated energy storage device 100 and adjacent stacked energy storage power packs 200 achieve electrical connection expansion through their respective blind-plug terminals 216. Furthermore, two adjacent energy storage power packs 200 achieve electrical connection expansion through their respective blind-plug terminals 216 on adjacent stacked contact surfaces. In one embodiment, in the vertical direction, the integrated energy storage device 100 and the energy storage power pack 200 achieve electrical connection expansion through cables.

[0296] In some embodiments, please combine Figure 12 and Figure 13 After the energy storage integrated machine 100 and the energy storage and power pack 200 are stacked, the top projection of the energy storage integrated machine 100 overlaps with the top projection of the energy storage and power pack 200, or the overlap is greater than 90%.

[0297] Thus, the stability of the stacked energy storage devices 300 can be maintained.

[0298] Specifically, for the sake of stability after the energy storage devices 300 are stacked, and to ensure that the stacked product remains visually integrated and has a good overall appearance, in the vertical direction, the top projection of the energy storage device 100 and the top projection of the energy storage and power pack 200 overlap, or the overlap is greater than 90%. In other words, the width in the front-to-back direction and the length in the left-to-right direction of the energy storage and power pack 200 are required to be consistent or substantially consistent with the width in the front-to-back direction and the length in the left-to-right direction of the energy storage device 100.

[0299] In this configuration, the energy storage and charging pack 200 includes fewer components than the integrated energy storage device 100. Therefore, the height of the energy storage and charging pack 200 can be minimized to save structural costs. Unlike the first battery module 104 of the integrated energy storage device 100, which is a side-mounted battery module (with its short side oriented along the front-to-back direction of the integrated energy storage device 100), the second battery module 204 of the energy storage and charging pack 200 is a flat battery module (with its short side oriented along the top-to-bottom direction of the energy storage and charging pack 200). This minimizes the structural cost of the charging pack housing 202 of the energy storage and charging pack 200.

[0300] Optionally, in the up and down direction, the module body of the second fire protection module 206 is arranged corresponding to the blind plug terminal 216 of the energy storage and charging pack 200 and is located on the left side of the second battery module 204 .

[0301] In some embodiments, the energy storage device 300 includes any one of a balcony photovoltaic energy storage device, a portable energy storage device, and a home energy storage device.

[0302] Therefore, the energy storage device 300 has a wide range of applications and can meet the needs of individual users in different scenarios.

[0303] Specifically, in one embodiment, the energy storage device 300 includes a balcony photovoltaic energy storage device. The balcony photovoltaic energy storage device can be placed on the balcony of a house and can be connected to a photovoltaic panel, so that the electricity generated by the photovoltaic panel can be stored. The balcony photovoltaic energy storage device can also store electricity from the power grid. A portable energy storage device is a mobile energy storage device that can store electricity from photovoltaic panels and the power grid. Users can carry the portable energy storage device to any place outdoors or indoors for use. A home energy storage device can be an energy storage device placed anywhere inside or outside the house. The home energy storage device can store electricity from photovoltaic panels and the power grid. The above-mentioned different types of energy storage devices 300 can all supply power to the user's loads, including but not limited to household appliances, lights, kitchen appliances, mobile phones, tablets, computers, etc.

[0304] In summary, the energy storage integrated device 100, energy storage and charging pack 200, and energy storage device 300 of the embodiments of the present application can achieve at least the following beneficial effects:

[0305] 1. Use a small-sized hot aerosol fire-fighting module.

[0306] 2. Built-in fire protection module and special placement design do not affect the original product appearance and design;

[0307] 3. The fire protection module adopts passive triggering, and the temperature of the thermistor wire is too high to trigger. Fire detection does not require power consumption.

[0308] 4. The overall fire protection module has low structural cost for installation and the cost of the fire protection module itself.

[0309] 5. The passive triggering mode of the thermal line and the active triggering mode of the dry node are simple, efficient and timely.

[0310] 6. The fire protection module is stored at normal pressure, which does not require regular inspection of the fire protection module. It is very suitable for balcony energy storage products (the service life can exceed 10 years).

[0311] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, combinations, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and purpose of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An integrated energy storage device, characterized in that: include: An integrated chassis, comprising a first battery box housing and a radiator housing that are detachably connected, wherein a first battery module is fixed in the first battery box housing, and an inverter circuit board is fixed in the radiator housing; The first battery module includes a plurality of battery cells for storing and outputting electricity; The inverter circuit board is used for converting AC power and DC power, and dissipates heat to the outside through the radiator housing; A first fire-fighting module is provided in the integrated chassis, and the first fire-fighting module includes a trigger mechanism, a fire-extinguishing agent storage chamber, and a release mechanism; The trigger mechanism is provided in the fire detection area in the integrated chassis, and generates a trigger signal when the fire detection area meets the fire trigger condition; The fire extinguishing agent storage bin is used to store fire extinguishing agent; The release mechanism is used to release the fire extinguishing agent into the chamber where the first battery module is located in response to the trigger signal of the trigger mechanism.

2. The energy storage integrated machine according to claim 1, characterized in that: The first fire protection module is a passive self-triggering fire protection module.

3. The energy storage integrated machine according to claim 1, characterized in that: The trigger mechanism includes a passive trigger mechanism, and the passive trigger mechanism includes any one of a temperature detector, a smoke detector, and an air pressure detector.

4. The energy storage integrated machine according to claim 3, characterized in that: The temperature detector is a flexible temperature detector, which includes a thermistor. The thermistor is arranged in the fire detection area and burns when the temperature in the fire detection area exceeds or equals the combustion temperature of the thermistor, thereby triggering the first fire module to release the fire extinguishing agent through the release mechanism.

5. The energy storage integrated machine according to claim 4, characterized in that: The heat-sensitive wire is sheathed with a glass fiber tube.

6. The integrated energy storage device according to claim 1, characterized in that: The fire detection area is located inside the first battery module or in the electrode area of ​​the first battery module.

7. The integrated energy storage device according to claim 1, characterized in that: The energy storage integrated machine further includes a first battery management control board, which is electrically connected to the first battery module and is used to monitor battery status information of the first battery module; The trigger mechanism includes an active trigger mechanism, and the active trigger mechanism is electrically connected to the first battery management control board; When the first battery management control board monitors that the battery status information is in a thermal runaway state, sending a control signal to the active trigger mechanism; The active triggering mechanism responds to the control signal, thereby triggering the first fire fighting module to release the fire extinguishing agent through the releasing mechanism.

8. The integrated energy storage device according to claim 7, characterized in that: The active trigger mechanism is an electric initiator, and the control signal is an electric starting signal. The electric starting signal includes a current or voltage signal generated when switching from a closed state to an open state, or a current or voltage signal generated when switching from an open state to a closed state.

9. The integrated energy storage device according to claim 8, characterized in that: The outer jacket of the wire harness connected to the electric initiator is provided with a glass fiber tube.

10. The integrated energy storage device according to claim 1, characterized in that: The first fire-fighting module includes a module body, which includes the fire-extinguishing agent storage bin. The module body is flat. The module body of the first fire-fighting module is fixed on the inner wall surface of the first battery box shell. The distance between the inner wall surface and the first battery module is greater than the installation distance of the module body of the first fire-fighting module.

11. The integrated energy storage device according to claim 1, characterized in that: The release mechanism includes a nozzle, which is located on the shell of the first fire protection module and is arranged close to the first battery module.

12. The integrated energy storage device according to claim 1, characterized in that: The integrated chassis also includes a middle partition, which is used to separate the integrated chassis into a first chamber and a second chamber. The first chamber is formed by the first battery box shell and the middle partition, and the second chamber is formed by the radiator shell and the middle partition.

13. The integrated energy storage device according to claim 1, characterized in that: A breathing valve is provided on the radiator housing.

14. The integrated energy storage device according to claim 1, characterized in that: The radiator housing is also provided with a photovoltaic connection terminal, a grid connection terminal and an AC load output terminal.

15. The integrated energy storage device according to any one of claims 1 to 14, characterized in that: The fire extinguishing agent is an aerosol fire extinguishing agent.

16. An energy storage and charging pack, characterized in that: Used to electrically connect to the energy storage integrated machine to expand the capacity of the energy storage integrated machine. The energy storage power-up package includes: The power pack housing comprises a detachably connected second battery box housing and a cover plate, wherein a second battery module is fixed in the second battery box housing, and the cover plate is used to close the installation opening of the second battery box housing; The second battery module includes a plurality of battery cells for storing and outputting electricity; A second fire protection module is provided in the power pack housing, the second fire protection module including a trigger mechanism, a fire extinguishing agent storage compartment and a release mechanism; The trigger mechanism is provided in the fire detection area in the power pack housing, and generates a trigger signal when the fire detection area meets the fire trigger condition; The fire extinguishing agent storage bin is used to store fire extinguishing agent; The release mechanism releases the fire extinguishing agent into the chamber where the second battery module is located in response to the trigger signal of the trigger mechanism.

17. The energy storage and charging pack according to claim 16, characterized in that: The second fire protection module is a passive self-triggering fire protection module.

18. The energy storage and charging pack according to claim 16, characterized in that: The trigger mechanism includes a passive trigger mechanism, and the passive trigger mechanism includes any one of a temperature detector, a smoke detector, and an air pressure detector.

19. The energy storage and charging pack according to claim 18, characterized in that: The temperature detector is a flexible temperature detector, which includes a thermistor. The thermistor is arranged in the fire detection area and burns when the temperature in the fire detection area exceeds or equals the combustion temperature of the thermistor, thereby triggering the second fire module to release the fire extinguishing agent through the release mechanism.

20. The energy storage and charging pack according to claim 19, characterized in that: The heat-sensitive wire is sheathed with a glass fiber tube.

21. The energy storage and charging pack according to claim 16, characterized in that: The fire detection area is located inside the second battery module or in the electrode area of ​​the second battery module.

22. The energy storage and charging pack according to claim 16, characterized in that: The energy storage and charging pack further includes a second battery management control board, which is electrically connected to the second battery module and is used to monitor battery status information of the second battery module; The trigger mechanism includes an active trigger mechanism, and the active trigger mechanism is electrically connected to the second battery management control board; When the second battery management control board monitors that the battery status information is in a thermal runaway state, sending a control signal to the active triggering mechanism; The active triggering mechanism responds to the control signal, thereby triggering the second fire fighting module to release the fire extinguishing agent through the release mechanism.

23. The energy storage and charging pack according to claim 22, characterized in that: The active trigger mechanism is an electric initiator, and the control signal is an electric starting signal. The electric starting signal includes a current or voltage signal generated when switching from a closed state to an open state, or a current or voltage signal generated when switching from an open state to a closed state.

24. The energy storage and charging pack according to claim 23, characterized in that: The outer jacket of the wire harness connected to the electric initiator is provided with a glass fiber tube.

25. The energy storage and charging pack according to claim 16, characterized in that: The module body of the second fire protection module is flat and fixed to the inner wall surface of the second battery box shell. The distance between the inner wall surface and the second battery module is greater than the installation distance of the module body of the second fire protection module.

26. The energy storage and charging pack according to claim 16, characterized in that: The release mechanism includes a nozzle, which is located on the shell of the second fire protection module and is arranged close to the second battery module.

27. The energy storage and charging pack according to claim 16, characterized in that: A breathing valve is provided on the second battery box housing or the cover plate.

28. The energy storage and charging pack according to any one of claims 16 to 27, characterized in that: The fire extinguishing agent is an aerosol fire extinguishing agent.

29. An energy storage device, characterized in that: include: The energy storage integrated device according to any one of claims 1 to 15; At least one energy storage and power pack according to any one of claims 16 to 28; The energy storage power pack is used to be electrically connected to the energy storage integrated machine to achieve capacity expansion of the energy storage integrated machine.

30. The energy storage device according to claim 29, characterized in that The integrated energy storage device and the energy storage and power pack are stacked up and down, and the integrated energy storage device and the energy storage and power pack are electrically connected and expanded by stacking blind-plug terminals of adjacent contact surfaces, or by cables.

31. The energy storage device according to claim 30, characterized in that After the integrated energy storage device and the energy storage and power pack are stacked, the top projection of the integrated energy storage device overlaps with the top projection of the energy storage and power pack, or the degree of overlap is greater than 90%.

32. The energy storage device according to claim 31, characterized in that The energy storage device includes any one of a balcony photovoltaic energy storage device, a portable energy storage device, and a household energy storage device.

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