energy storage power supply

Abstract

The application discloses an energy storage power supply. The energy storage power supply comprises an electrical component and a fire-fighting module. The fire-fighting module comprises a temperature sensing wire and a spraying module. The temperature sensing wire is arranged on the electrical component and is used for being fused when the electrical component is in thermal runaway. The spraying module is connected with the temperature sensing wire and is used for spraying fire-retardant substances into the energy storage power supply when the temperature sensing wire is fused. In the energy storage power supply, when the electrical component in the energy storage power supply is in thermal runaway, the temperature sensing wire is fused under a high-temperature environment, the spraying module can be triggered to spray the fire-retardant substances into the energy storage power supply, so that the combustion and explosion caused by the thermal runaway can be quickly prevented, and the spread of the thermal runaway of the energy storage power supply can be effectively controlled.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to an energy storage power source. Background Technology

[0002] With the rapid development of energy storage technology, energy storage power supplies have been widely used in daily life and industrial production. However, energy storage power supplies also have safety issues, especially residential energy storage products, for which safety is the primary consideration for users. Electrical components within energy storage power supplies, such as battery cells, inverters, battery protection boards, and monitoring circuit boards, may experience thermal runaway due to overcharging or environmental overheating, releasing a large amount of heat instantaneously. This heat can transfer to surrounding battery cells, causing them to also experience thermal runaway, leading to its spread and potentially even combustion or explosion, resulting in a fire. Utility Model Content

[0003] This application provides an energy storage power source to solve at least one of the aforementioned technical problems.

[0004] This application provides an energy storage power supply, which includes electrical components and a fire-fighting module. The fire-fighting module includes a temperature sensing wire and an ejection module. The temperature sensing wire is disposed on the electrical components and is used to melt when the electrical components experience thermal runaway. The ejection module is connected to the temperature sensing wire and is used to eject flame-retardant material into the energy storage power supply when the temperature sensing wire melts.

[0005] In the aforementioned energy storage power supply, when thermal runaway occurs in the electrical components inside the energy storage power supply, the temperature sensing wire will melt under high temperature conditions, which can trigger the ejection module to spray flame-retardant material into the energy storage power supply, thereby quickly preventing combustion and explosion caused by thermal runaway, and effectively controlling the spread of thermal runaway of the energy storage power supply.

[0006] In some embodiments, the electrical component includes a battery module, and the temperature sensing wire is disposed around the battery module in the circumferential direction.

[0007] Among the aforementioned energy storage power sources, the response time of the fire protection module can be reduced to a certain extent.

[0008] In some embodiments, the electrical component includes a battery module comprising a plurality of battery cells, the plurality of battery cells including at least one monitoring cell, and the temperature sensing wire being disposed on at least one side of the monitoring cell.

[0009] In the aforementioned energy storage power sources, the monitoring path of the temperature sensing wire can be flexibly arranged according to actual needs.

[0010] In some implementations, all the monitoring cells share a single temperature sensing line on the same side of the battery module.

[0011] Among the aforementioned energy storage power sources, space utilization can be improved to a certain extent.

[0012] In some embodiments, multiple monitoring cells are arranged in an array, and the temperature sensing wires are arranged in a bow-shaped or U-shaped configuration.

[0013] The aforementioned energy storage power supply can cover more battery cell areas, thereby improving the comprehensiveness and accuracy of temperature monitoring by the temperature sensing line to a certain extent.

[0014] In some embodiments, the corner positions of the temperature sensing lines are rounded.

[0015] In the aforementioned energy storage power supply, the temperature sensing wire is prevented from easily breaking due to stress concentration and aging over time.

[0016] In some embodiments, the electrical component includes a battery module comprising multiple battery cells, wherein the temperature sensing wire is located on the side of the battery cell where the explosion-proof valve is located, and the temperature sensing wire is positioned close to the explosion-proof valve of the battery cell.

[0017] In the aforementioned energy storage power supply, the temperature sensing wire can detect temperature changes more quickly, which reduces the response time of the fire protection module to some extent.

[0018] In some embodiments, the explosion-proof valves of a plurality of the battery cells are located on a first side of the battery cell, and the explosion-proof valves of a plurality of the battery cells are located on a second side of the battery cell that is different from the first side. The battery module includes a heating film, which is disposed on one of the first side and the second side of the battery cell. The temperature sensing wire is disposed between the heating film and the explosion-proof valve of the battery cell.

[0019] The aforementioned energy storage power supply can flexibly adapt to the layout of different battery cells within the battery module to ensure effective heating and temperature monitoring of the battery cells.

[0020] In some embodiments, the explosion-proof valves of all the battery cells are located on a first side of the battery cell, and the battery module includes a heating film located on a second side of the battery cell that is different from the first side.

[0021] In the aforementioned energy storage power supply, direct thermal interference from the heating film to the temperature sensing wire can be avoided.

[0022] In some embodiments, the ejection module includes a body and a connecting portion, the energy storage power supply includes a fixing member, the connecting portion is disposed on the body, the temperature sensing wire passes through the connecting portion to extend into the body, and the fixing member tightens the connecting portion to clamp the temperature sensing wire.

[0023] In the aforementioned energy storage power supply, measures should be taken to prevent the temperature sensing wire from detaching from the emission module and affecting the normal operation of the fire protection module.

[0024] In some embodiments, the energy storage power supply includes a battery management module, which is communicatively connected to the ejection module. When the temperature sensing wire melts, the ejection module transmits a thermal runaway signal to the battery management module, which then issues an alarm based on the thermal runaway signal.

[0025] Among the aforementioned energy storage power sources, timely early warnings can be provided when thermal runaway occurs.

[0026] In some embodiments, the battery management module is communicatively connected to the ejection module via a signal line, and the signal line is covered with a first protective layer.

[0027] In the aforementioned energy storage power supply, measures are taken to prevent signal lines from being physically damaged during assembly, transportation, etc., so as to avoid affecting the normal operation of the battery management module and the fire protection module.

[0028] In some embodiments, the ejection module is provided with a trigger element that abuts against the housing of the energy storage power supply and is electrically connected to the battery management module. When the battery management module detects that the ejection module has been disassembled through the trigger element, the battery management module controls the ejection module to fail.

[0029] In the aforementioned energy storage power supply, measures are taken to prevent accidental triggering of the ejection module to spray flame-retardant substances, which could damage the energy storage power supply.

[0030] In some embodiments, the energy storage power supply includes a main battery pack and / or a power-up pack. The main battery pack includes a first battery management module, an inverter, and a battery module. The first battery management module is electrically connected to the inverter and the battery module. The power-up pack includes a second battery management module, which is used to communicate with the first battery management module.

[0031] The aforementioned energy storage power sources can be flexibly expanded according to the needs of different scenarios.

[0032] In some embodiments, the temperature sensing wire is provided with a second protective layer, and / or;

[0033] There are no obstructions directly in front of the nozzle of the ejection module within a set distance.

[0034] In the aforementioned energy storage power supply, measures are taken to prevent the temperature sensing wire from being physically damaged during assembly, transportation, etc., so as to avoid affecting the normal operation of the fire protection module.

[0035] Additional aspects and advantages of the embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0036] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0037] Figure 1 This is an exploded view of the energy storage power supply (main battery pack) according to an embodiment of this application;

[0038] Figure 2 This is a partial structural schematic diagram of the energy storage power supply (main battery pack) according to an embodiment of this application;

[0039] Figure 3 This is one of the top views of a portion of the structure of the energy storage power supply (main battery pack) according to an embodiment of this application;

[0040] Figure 4 This is a second top view of a portion of the structure of the energy storage power supply (main battery pack) according to an embodiment of this application;

[0041] Figure 5 This is an exploded view of the energy storage power source according to an embodiment of this application;

[0042] Figure 6 This is a top view of the fire protection module according to the embodiments of this application;

[0043] Figure 7 This is a schematic diagram of the ejection module according to an embodiment of this application.

[0044] Explanation of key component symbols:

[0045] Firefighting module-10, Ejection module-13, Nozzle-131, Body-133, Connector-135, Fixing hole-137, Signal interface-139, Temperature sensing wire-15, Signal wire-17, Battery module-30, First battery module-30a, Second battery module-30b, Battery cell-35, Monitoring cell-35a, Explosion-proof valve-351, Battery management module-50, Inverter-70, Housing-90, Separator-95, Main battery pack-100, Power pack-200, Energy storage power supply-1000. Detailed Implementation

[0046] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0047] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

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

[0049] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] This disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described herein. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0051] The energy storage power supply 1000 in this application can refer to a residential energy storage power supply, which may include household energy storage power supplies or balcony photovoltaic-energy storage power supplies, wherein:

[0052] Home energy storage typically refers to large-capacity battery energy storage devices (such as lithium battery packs), often used in conjunction with rooftop photovoltaic (PV) systems. Its core function is to store excess electricity generated by PV power generation or to utilize lower-priced electricity during off-peak hours. During periods of insufficient PV power generation (such as at night or on rainy days) or peak grid electricity prices, the energy storage system can release electricity for household use, significantly improving household energy self-sufficiency, reducing electricity bills, and providing critical backup power during grid outages. These systems generally require professional installation and have capacities ranging from 5 kWh to tens of kWh, making them suitable for households with stable electricity needs, those seeking energy independence, or those needing to cope with frequent power outages.

[0053] Balcony photovoltaic-storage power supply is a miniaturized, modular, plug-and-play photovoltaic power generation and energy storage solution designed for apartment dwellers, renters, or families with limited space. It typically consists of 1-2 small photovoltaic panels (power ranging from 200W to 800W) that can be directly installed on balconies, windowsills, or exterior walls, and an integrated or separate small-capacity energy storage unit (e.g., 0.5kWh-2kWh). Its core principle is to generate electricity locally on the balcony, prioritizing power for low-power appliances (such as lighting, routers, and small appliances) on or near the balcony. Excess energy can be stored or fed into the grid (in areas where grid connection is permitted). Installation is extremely simple, requiring no modifications to the building's electrical circuits (usually just plugging it into a wall outlet), with a low investment threshold. Its main purpose is to reduce some daily electricity costs and experience green power generation.

[0054] Please see Figures 1 to 5 This application provides an energy storage power supply 1000. The energy storage power supply 1000 includes electrical components and a fire-fighting module 10. The fire-fighting module 10 includes a temperature sensing wire 15 and an ejection module 13. The temperature sensing wire 15 is disposed on the electrical components, and the ejection module 13 is connected to the temperature sensing wire 15 and is used to eject flame-retardant material into the energy storage power supply 1000 when the temperature sensing wire 15 melts.

[0055] In the aforementioned energy storage power supply 1000, when thermal runaway occurs in the electrical components inside the energy storage power supply 1000, the temperature sensing wire 15 will melt in a high-temperature environment, which can trigger the ejection module 13 to spray flame-retardant material into the energy storage power supply 1000, thereby quickly preventing combustion and explosion caused by thermal runaway, and effectively controlling the spread of thermal runaway in the energy storage power supply 1000.

[0056] Specifically, please combine Figure 1The energy storage power supply 1000 contains multiple electrical components, including a battery module 30, a battery management module 50, and an inverter 70, which are electrically connected. Optionally, the battery module 30 is located within the housing 90 of the energy storage power supply 1000. In one embodiment, the battery module 30 may be composed of multiple battery cells 35 connected in series, parallel, or a hybrid configuration for storing and releasing electrical energy. A hybrid configuration refers to multiple battery cells 35 being connected in both parallel and series connections.

[0057] Inverter 70 is used to convert the direct current (DC) stored in battery module 30 into alternating current (AC), and to convert the AC input into DC to charge battery cell 35. During discharge, battery cell 35 converts stored chemical energy into DC electrical energy, and inverter 70 converts the DC output from battery module 30 into AC output for use by external devices.

[0058] The battery management module 50 is the management system of the energy storage power supply 1000. It is located between the battery module 30 and the inverter 70, and is separated from the inverter 70 by a partition plate 95. The battery management module 50 is used to monitor, control, and protect the safe and stable operation of the battery module 30. During charging and discharging, the battery management module 50 monitors the status of the battery module 30 and outputs corresponding control commands to ensure the safe and stable operation of the battery module 30.

[0059] With the rapid development of energy storage technology, energy storage power supplies have been widely used in daily life and industrial production. However, along with the widespread application of energy storage power supplies, their safety issues have become increasingly prominent. Electrical components within energy storage power supplies, such as battery cells, inverters, battery protection boards, and monitoring circuit boards, may experience thermal runaway if they encounter abnormal conditions such as overcharging, environmental overheating, mechanical damage, or internal short circuits. Thermal runaway is an extremely dangerous chain reaction. For example, a battery cell may release a large amount of heat instantaneously due to uncontrolled chemical reactions, causing a rapid rise in temperature. This high-temperature heat will quickly conduct to surrounding battery cells, triggering a chain reaction that causes other normal battery cells to also experience thermal runaway. As thermal runaway spreads, the internal temperature of the energy storage power supply will continue to climb, potentially reaching hundreds of degrees Celsius or even higher. At such high temperatures, the battery cell casing may melt, and the internal electrolyte may vaporize and spray out, mixing with air to form flammable and explosive gases. Once these gases encounter an open flame or electrical spark, they may ignite and explode violently, leading to fires or even explosions, which could endanger human lives. Therefore, a technical solution for fire protection using energy storage is needed to prevent fires caused by the spread of thermal runaway from energy storage power sources.

[0060] In the embodiments of this application, please refer to Figure 1 and Figure 2The energy storage power supply 1000 includes a fire suppression module 10, which is located on the upper side of the battery module 30 and is fixedly connected to the housing 90 through fasteners passing through fixing holes 137 of the fire suppression module 10. The ejection module 13 of the fire suppression module 10 is used to eject flame-retardant material into the energy storage power supply 1000 when thermal runaway occurs in the electrical components inside the energy storage power supply 1000. Optionally, the flame-retardant material includes, but is not limited to, thermal aerosols, foam, carbon dioxide, etc.

[0061] It is understandable that the fire protection module 10 is small and lightweight, and can also be placed in other available or embedded gaps within the energy storage power supply 1000 without affecting the normal operation of other electrical components within the energy storage power supply 1000.

[0062] The fire protection module 10 also includes a temperature sensing wire 15, which is installed on the electrical components and forms multiple dry nodes (i.e., physical contact points) with the surface of the electrical components. At the same time, the temperature sensing wire 15 can be connected to the emission module 13 to form a dry node circuit. The temperature sensing wire 15 can change the state of the dry nodes by temperature changes.

[0063] When the temperature sensing wire 15 is not melted, the dry contact circuit is closed, and the temperature sensing wire 15 can transmit a dry contact closure signal to the ejection module 13. When the temperature sensing wire 15 melts under high temperature conditions, the dry contact circuit is open, and the temperature sensing wire 15 can transmit a dry contact open signal to the ejection module 13, thereby triggering the ejection module 13 to eject flame-retardant material into the energy storage power supply 1000. This can quickly prevent combustion and explosion caused by thermal runaway and, to a certain extent, control the spread of thermal runaway in the energy storage power supply 1000. Figure 3 and Figure 4 In one embodiment, the electrical components include a battery module 30, and a temperature sensing wire 15 is disposed on at least one side of the battery module 30.

[0064] Optionally, the temperature sensing wire 15 may be made of a metallic material having a preset melting temperature and possessing electrical and thermal conductivity. The preset melting temperature is greater than the normal operating temperature of the electrical component and less than or equal to the initiation temperature at which thermal runaway occurs in the electrical component. Optionally, the temperature sensing wire 15 includes a thermistor wire. In one example, the preset melting temperature may be 170 degrees Celsius (°C).

[0065] Optionally, the nozzle 131 of the ejection module 13 can be sealed by a sealing membrane when the ejection module 13 is not triggered. In one embodiment, the fire-fighting module 10 is equipped with an electric initiator, and the temperature sensing wire 15 is electrically connected to the ejection module 13 through the electric initiator. In the event of thermal runaway of the electrical components inside the energy storage power supply 1000, the temperature inside the energy storage power supply 1000 continuously rises. When the temperature rises to the preset melting point temperature of the temperature sensing wire 15, the temperature sensing wire 15 melts and the dry contact closure circuit is broken, triggering the electric initiator to ignite and melt the sealing membrane, so that the flame-retardant material can be sprayed into the energy storage power supply 1000 through the nozzle 131.

[0066] In one embodiment, it is connected to a sealing membrane. In the event of thermal runaway of electrical components inside the energy storage power supply 1000, the temperature inside the energy storage power supply 1000 continuously rises. When the temperature rises to the preset melting point temperature of the temperature sensing wire 15, the temperature sensing wire 15 melts and transfers the temperature to the sealing membrane, causing it to melt, so that the flame retardant material can be sprayed into the energy storage power supply 1000 through the nozzle 131.

[0067] In some embodiments, the electrical components include a battery module 30, and a temperature sensing wire 15 is disposed around the battery module 30 in the circumferential direction.

[0068] This can reduce the response time of the fire protection module 10 to some extent.

[0069] Specifically, in some embodiments, since the total output terminal and total input terminal of the battery module 30 are located in the circumferential direction of the battery module 30, the current density or voltage intensity in the area where the total output terminal and total input terminal are located is significantly higher than in other areas, making it easier for high temperature anomalies to occur first, leading to thermal runaway. Therefore, by setting the temperature sensing wire 15 around the battery module 30 in the circumferential direction, temperature changes can be detected more quickly in the early stage of thermal runaway of the battery module 30 (i.e., the local temperature anomaly stage), thereby reducing the response time of the fire suppression module 10 to a certain extent.

[0070] It is understandable that, since the interior of the energy storage power supply 1000 is a relatively sealed space, when other electrical components (such as the inverter 70, battery protection board, and monitoring circuit board) inside the energy storage power supply 1000 experience thermal runaway, it will spread to the battery module 30, and the temperature inside the energy storage power supply 1000 will continue to rise, causing the temperature sensing wire 15 to melt, or triggering the ejection module 13 to spray flame-retardant material into the energy storage power supply 1000.

[0071] In some embodiments, the electrical components include a battery module 30, which includes a plurality of battery cells 35, and the plurality of battery cells 35 includes at least one monitoring cell 35a, with a temperature sensing wire 15 disposed on at least one side of the monitoring cell 35a.

[0072] In this way, the monitoring path of the temperature sensing line 15 can be flexibly arranged according to actual needs.

[0073] Specifically, based on the actual needs of the energy storage power supply 1000, some of the multiple cells 35 in the battery module 30 can be selectively designated as monitoring cells 35a. These selected monitoring cells 35a are equipped with temperature sensing lines 15, forming a dry node with each monitoring cell 35a. When an abnormally high temperature occurs inside the monitoring cell 35a, and the temperature rises to the melting point of the temperature sensing line 15, the temperature sensing line 15 melts. The temperature sensing line transmits a dry node disconnection signal to the ejection module 13 to trigger the ejection module 13 to eject flame-retardant material into the energy storage power supply 1000, thereby controlling the thermal runaway propagation of the monitoring cell 35.

[0074] Optionally, please combine Figure 3 and Figure 4 The temperature sensing wire 15 is disposed on at least one side of the monitoring cell 35a. In one embodiment, the temperature sensing wire 15 may be disposed on one of the front side, rear side, and peripheral side of the monitoring cell 35a. In one embodiment, the temperature sensing wire 15 may be disposed on two of the front side, rear side, and peripheral side of the monitoring cell 35a. In one embodiment, the temperature sensing wire 15 may be disposed on the front side, rear side, and peripheral side of the monitoring cell 35a.

[0075] It is understandable that since multiple cells 35 are installed in the same area, when thermal runaway occurs in other cells 35 in the battery module 30 except for the monitoring cell 35a, it will spread to the temperature sensing line 15 on the monitoring cell 35a. The temperature inside the energy storage power supply 1000 will continue to rise, causing the temperature sensing line 15 to melt. It can also trigger the ejection module 13 to spray flame-retardant material into the energy storage power supply 1000.

[0076] In some implementations, all monitoring cells 35a share a single temperature sensing line 15 on the same side of the battery module 30.

[0077] In this way, space utilization can be improved to some extent.

[0078] Specifically, a temperature sensing line 15 passes through multiple monitoring cells 35a on the same side of the battery module 30, so that the temperature sensing line 15 and multiple monitoring cells 35a form multiple dry nodes. Thus, the state of multiple dry nodes can be monitored by a single temperature sensing line 15 to determine whether the emission module 13 has been triggered, thereby reducing the amount of temperature sensing line 15 used and the space occupied, which can improve space utilization to a certain extent.

[0079] Optionally, in one embodiment, a temperature sensing line 15 passes through at least the front side of each monitoring cell 35a. Optionally, in one embodiment, a temperature sensing line 15 passes through at least the rear side of each monitoring cell 35a.

[0080] In some implementations, multiple monitoring cells 35a are arranged in an array, and the temperature sensing wires 15 are arranged in a bow-shaped or U-shaped pattern.

[0081] In this way, more areas of the battery cell 35 can be covered, which to some extent improves the comprehensiveness and accuracy of temperature monitoring by the temperature sensing line 15.

[0082] Specifically, in some embodiments, all the cells 35 of the battery module 30 are monitoring cells 35a, arranged in an array, and a temperature sensing line 15 is in contact with the same side of all the monitoring cells 35a.

[0083] exist Figure 3 In this embodiment, the temperature sensing line 15 is arranged in a bow shape, so that all the monitoring cells 35a can be covered by a single temperature sensing line 15 to monitor the temperature change of each cell 35, thereby improving the comprehensiveness and accuracy of temperature monitoring by the temperature sensing line 15 to a certain extent.

[0084] exist Figure 4 In this embodiment, the temperature sensing line 15 is arranged in a U-shape, so that all the monitoring cells 35a can be covered by a single temperature sensing line 15 to monitor the temperature change of each cell 35, thereby improving the comprehensiveness and accuracy of temperature monitoring by the temperature sensing line 15 to a certain extent.

[0085] In some embodiments, the corner positions of the temperature sensing wire 15 are rounded.

[0086] This avoids the situation where the temperature sensing wire 15 is prone to breakage due to stress concentration and aging over time.

[0087] Specifically, please combine Figure 3 and Figure 4 When the temperature sensing wires 15 are arranged in a bow-shaped or U-shaped pattern, there are corner positions in the arrangement path of the temperature sensing wires 15. If the corner positions are designed with bends (such as right angles or acute angles), stress concentration will occur due to the abrupt change in geometry. Under long-term stress, the temperature sensing wires 15 will be prone to fatigue aging and breakage over time.

[0088] Therefore, the corners of the temperature sensing wire 15 are rounded, which means that by smoothly transitioning the rounded corners, the stress that was originally concentrated in the sharp corner area is dispersed to a larger area to reduce local stress. This can prevent the temperature sensing wire 15 from easily breaking due to stress concentration over time and extend the service life of the temperature sensing wire 15 to a certain extent.

[0089] In some embodiments, the electrical components include a battery module 30, which includes a plurality of battery cells 35. A temperature sensing wire 15 is located on the side of the battery cell 35 where the explosion-proof valve 351 is located, and the temperature sensing wire 15 is located close to the explosion-proof valve 351 of the battery cell 35.

[0090] In this way, the temperature sensing line 15 can detect temperature changes more quickly, which reduces the response time of the fire protection module 10 to some extent.

[0091] Specifically, when thermal runaway occurs in cell 35, the chemical reaction inside cell 35 accelerates rapidly, causing the internal pressure and temperature of cell 35 to rise rapidly. When the pressure exceeds the withstand limit of the cell 35's casing 90, the explosion-proof valve 351, as a safety protection device, will actively open to release the high-temperature substances (such as high-temperature gases, electrolyte vapors, and solid particles) accumulated inside cell 35. During this process, the side of cell 35 where the explosion-proof valve 351 is located will experience high-temperature anomalies first due to the direct ejection of high-temperature substances, and the temperature in the area near the explosion-proof valve 351 will be significantly higher than other areas on cell 35.

[0092] Therefore, the temperature sensing wire 15 is located on the side of the explosion-proof valve 351 of the battery cell 35 and is close to the explosion-proof valve 351 of the battery cell 35. When the battery cell 35 experiences thermal runaway, the temperature change of the battery cell 35 can be monitored more quickly, thereby reducing the response time of the fire-fighting module 10 to a certain extent and reducing the risk of thermal runaway continuing to spread and causing combustion and explosion.

[0093] Alternatively, the temperature sensing wire 15 can be fixedly connected to the battery cell 35 using high-temperature tape.

[0094] In some embodiments, the explosion-proof valves 351 of a plurality of battery cells 35 are located on the first side of the battery cells 35, and the explosion-proof valves 351 of a plurality of battery cells 35 are located on a second side of the battery cells 35 that is different from the first side. The battery module 30 includes a heating film (not shown), which is disposed on one of the first side and the second side of the battery cells 35. The temperature sensing wire 15 is disposed between the heating film and the explosion-proof valves 351 of the battery cells 35.

[0095] In this way, the layout of different cells 35 within the battery module 30 can be flexibly adapted to ensure effective heating and temperature monitoring of the cells 35.

[0096] Specifically, in some embodiments, explosion-proof valves 351 of a plurality of battery cells 35 are located on a first side of the battery cells 35, and explosion-proof valves 351 of a plurality of battery cells 35 are located on a second side, the second side and the first side being arranged opposite to each other in the length direction of the battery cells 35, and the temperature sensing wire 15 is provided on at least one of the first side and the second side. Figure 1 In this context, the length direction of electromagnetic energy is the front-to-back direction.

[0097] The battery module 30 includes a heating film for heating the battery module 30 in a low-temperature environment, so that the battery module 30 reaches the operating temperature for normal operation. The heating film is disposed on one of the first side and the second side of the battery cell 35.

[0098] In one embodiment, the heating film is disposed on the first side, and the temperature sensing wire 15 is disposed between the heating film and the explosion-proof valve 351 on the first side of the battery cell 35; in another embodiment, the heating film is disposed on the second side, and the temperature sensing wire 15 is disposed between the heating film and the explosion-proof valve 351 on the second side of the battery cell 35. Therefore, the layout of different battery cells 35 within the battery module 30 can be flexibly adapted to ensure effective heating and temperature monitoring of the battery cells 35.

[0099] In some embodiments, the explosion-proof valves 351 of all cells 35 are located on the first side of the cell 35, and the battery module 30 includes a heating film located on a second side of the cell 35 that is different from the first side.

[0100] In this way, direct thermal interference from the heating film to the temperature sensing line 15 can be avoided.

[0101] Specifically, in some embodiments, the explosion-proof valves 351 of all battery cells 35 are located on the first side of the battery cell 35, the temperature sensing wire 15 is located on the first side where the explosion-proof valves 351 of the battery cell 35 are located, and the heating film is located on the second side, wherein the second side and the first side are arranged opposite to each other in the longitudinal direction (front-back direction) of the battery cell 35. Therefore, the heating film and the temperature sensing wire 15 are arranged separately, which can avoid direct thermal interference of the heating film to the temperature sensing wire 15, so as to avoid affecting the normal operation of the temperature sensing wire 15.

[0102] Optionally, the first side of the battery cell 35 is the front side of the battery cell 35, and the second side is the rear side of the battery cell 35.

[0103] In some embodiments, the ejection module 13 includes a body 133 and a connecting part 135. The energy storage power supply 1000 includes a fixing member. The connecting part 135 is disposed on the body 133. The temperature sensing wire 15 passes through the connecting part 135 and extends into the body 133. The fixing member tightens the connecting part 135 so that the connecting part 135 clamps the temperature sensing wire 15.

[0104] This prevents the temperature sensing wire 15 from detaching from the emission module 13 and affecting the normal operation of the fire protection module 10.

[0105] Specifically, please combine Figure 6 and Figure 7 The temperature sensing wire 15 is inserted into the body 133 from one end of the connection part 135 of the ejection module 13. The fastener tightens the connection part 135 so that the connection part 135 clamps the temperature sensing wire 15, thereby preventing the temperature sensing wire 15 from falling off the ejection module 13 and affecting the normal operation of the fire protection module 10.

[0106] In one embodiment, the fastener includes a cable tie, and the connecting portion 135 is tubular or claw-shaped. When the temperature sensing wire 15 passes through the connecting portion 135, the cable tie can tighten the connecting portion 135, thereby securing the temperature sensing wire 15. In another embodiment, the fastener includes a nut, and the connecting portion 135 is stud-shaped or claw-shaped. The nut can pass through the temperature sensing wire 15 to be fixedly connected to the connecting portion 135, thereby tightening the connecting portion 135 to clamp the temperature sensing wire 15.

[0107] In some embodiments, the energy storage power supply 1000 includes a battery management module 50, which is communicatively connected to the ejection module 13. When the temperature sensing wire 15 melts, the ejection module 13 transmits a thermal runaway signal to the battery management module 50, and the battery management module 50 issues an alarm based on the thermal runaway signal.

[0108] In this way, early warnings can be issued in a timely manner when thermal runaway occurs.

[0109] Specifically, the battery management block of the energy storage power supply 1000 is communicatively connected to the fire suppression module 10. When thermal runaway occurs in the electrical components inside the energy storage power supply 1000, the temperature inside the energy storage power supply 1000 rises sharply. When the temperature reaches the melting point of the temperature sensing wire 15, the temperature sensing wire 15 will melt, thereby triggering the ejection module 13 to spray flame-retardant material into the energy storage power supply 1000. At the same time, the ejection module 13 can transmit a thermal runaway signal to the battery management module 50. Optionally, the communication connection may include wired communication connection and wireless communication connection. The wireless communication connection includes, but is not limited to, Bluetooth communication, Wi-Fi communication, mobile network communication, etc.

[0110] Upon receiving a thermal runaway signal, the battery management module 50 can issue an alarm, such as an audible or visual alarm, or send the alarm signal to the display screen of the energy storage power supply 1000 for display or to the user's terminal, thereby promptly alerting the user to the thermal runaway situation of the energy storage power supply 1000. The user's terminal includes, but is not limited to, mobile phones, tablets, personal computers, and wearable smart devices.

[0111] In some embodiments, the battery management module 50 is communicatively connected to the ejection module 13 via a signal line 17, the signal line 17 being covered with a first protective layer.

[0112] This prevents the signal line 17 from being physically damaged during assembly, transportation, etc., so as to affect the normal operation of the battery management module 50 and the fire protection module 10.

[0113] Specifically, please combine Figure 6 and Figure 7The ejection module 13 is equipped with a signal interface 139 for connection to the signal line 17. The battery management module 50 is communicatively connected to the ejection module 13 via the signal line 17. When the temperature sensing line 15 melts, the ejection module 13 receives the melt signal from the temperature sensing line 15 and then transmits a thermal runaway signal to the battery management module 50 via the signal line 17. The battery management module 50 issues an alarm based on the thermal runaway signal.

[0114] In one embodiment, the signal line 17 is covered with a first protective layer to prevent physical damage to the signal line 17 during assembly, transportation, etc., which could affect the normal operation of the battery management module 50 and the emission module 13. Optionally, the first protective layer may be a fiberglass tube.

[0115] In some embodiments, the ejection module 13 is provided with a trigger (not shown), which abuts against the housing 90 of the energy storage power supply 1000 and is electrically connected to the battery management module 50. When the battery management module 50 detects that the ejection module 13 has been removed through the trigger, the battery management module 50 controls the ejection module 13 to fail.

[0116] This prevents the ejection module 13 from being in a malfunctioning state when it is disassembled, thus avoiding accidental triggering of the ejection module 13 to eject flame-retardant material and damage to the energy storage power supply 1000.

[0117] Specifically, the fire-fighting module 10 is provided with fixing holes 137, through which fasteners can pass to fix the fire-fighting module 10 onto the housing 90 of the energy storage power supply 1000. In some embodiments, the emission module 13 is provided with a trigger, which abuts against the housing 90 of the energy storage power supply 1000 and is electrically connected to the battery management module 50, thereby forming a dry-node closed loop between the emission module 13 and the battery management module 50 through the trigger. The battery management module 50 can then detect whether the emission module 13 has been removed by monitoring the state of the trigger.

[0118] When the ejection module 13 is correctly installed on the housing 90, the trigger of the ejection module 13 will abut against the housing 90, thereby outputting a dry contact closure signal to the battery management module 50. This allows the battery management module 50 to detect that the trigger is in abutting state, and thus recognize that the ejection module 13 is correctly installed on the housing 90. At this time, the fire-fighting module 10 can work normally and eject flame-retardant material into the energy storage power supply 1000 when thermal runaway occurs in the electrical components inside the energy storage power supply 1000.

[0119] When the ejection module 13 is removed from the housing 90, the trigger of the ejection module 13 does not come into contact with the housing 90, thereby outputting a dry contact disconnect signal to the battery management module 50. This causes the battery management module 50 to detect that the trigger is not in contact, and thus recognize that the ejection module 13 has been removed.

[0120] In one embodiment, when the battery management module 13 is removed, the battery management module 50 transmits a failure signal to the fire-fighting module 10 to trigger the circuit of the electric initiator in the ejection module 13 to disconnect, so that it cannot be triggered to ignite and cause the ejection module 13 to spray flame-retardant material. Therefore, it can avoid damage to the energy storage power supply 1000 caused by accidentally triggering the ejection module 13 to spray flame-retardant material.

[0121] Optionally, the contacts may include, but are not limited to, microswitches, magnetic switches, spring probes, or elastic reeds.

[0122] In some embodiments, the energy storage power supply 1000 includes a main battery pack 100 and / or a power supply pack 200. The main battery pack 100 includes a first battery management module, an inverter 70, and a battery module 30. The first battery management module is electrically connected to the inverter 70 and the battery module 30. The power supply pack 200 includes a second battery management module (not shown) for communication connection with the first battery management module.

[0123] In this way, capacity can be flexibly expanded according to the needs of different scenarios.

[0124] Specifically, the main battery pack 100 is the main battery unit in the energy storage power supply 1000, and the power supply pack 200 is an additional battery unit used to expand the capacity of the main battery pack 100. In some embodiments, please refer to... Figure 1 The energy storage power supply 1000 includes a main battery pack 100. In some embodiments, please refer to... Figure 5 The energy storage power supply 1000 includes a main battery pack 100 and a power pack 200.

[0125] The main battery pack 100 includes a first battery management module, an inverter 70, and a first battery module 30a. The first battery management module is electrically connected to the inverter 70 and the first battery module 30a. The power pack 200 includes a second battery management module and a second battery module 30b. The second battery management module is electrically connected to the second battery module 30b. The second battery management module is communicatively connected to the first battery management module.

[0126] Therefore, the first battery management module can monitor the voltage, temperature, current, and other electrical parameters of each cell 35 in the main battery pack 100, and the second battery management module can monitor the voltage, temperature, current, and other electrical parameters of each cell 35 in the power pack 200. These parameters are then transmitted to the first battery management module. During charging and discharging, the first battery management module can output corresponding control commands based on the detected electrical parameters to ensure the safe and stable operation of the entire energy storage power supply 1000. For example, the first battery management module can convert the DC power from the first battery module 30a and the second battery module 30b into the AC power required for external output via the inverter 70. Therefore, the power pack 200 can be flexibly used for capacity expansion according to the needs of different scenarios.

[0127] It is understandable that the fire protection module 10 can be applied to the power supply pack 200, and the arrangement of the temperature sensing wires in the power supply pack 200 can be the same as or different from the arrangement of the temperature sensing wires in the main battery pack 100.

[0128] In some embodiments, the temperature sensing wire 15 is provided with a second protective layer, and / or;

[0129] There are no obstacles directly in front of the nozzle 131 of the ejection module 13 within a set distance.

[0130] This is to prevent the temperature sensing wire 15 from being physically damaged during assembly, transportation, etc., so as to avoid affecting the normal operation of the fire protection module 10.

[0131] Optionally, the second protective layer may be a fiberglass tube.

[0132] In one embodiment, there are no obstacles directly in front of the nozzle 131 of the ejection module 13 within a set distance to prevent obstacles from blocking the nozzle 131 and thus affecting the normal ejection of flame-retardant material by the ejection module 13. The set distance can be specifically limited according to the actual situation, and this application does not make a specific limitation. In one example, the set distance is 0.05 meters (m).

[0133] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0134] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An energy storage power source, characterized in that, It includes electrical components and a fire protection module. The fire protection module includes a temperature sensing wire and a spraying module. The temperature sensing wire is located on the electrical components and is used to melt when the electrical components experience thermal runaway. The spraying module is connected to the temperature sensing wire and is used to spray flame-retardant material into the energy storage power source when the temperature sensing wire melts.

2. The energy storage power supply according to claim 1, characterized in that, The electrical component includes a battery module, and the temperature sensing wire is arranged around the battery module in the circumferential direction.

3. The energy storage power supply according to claim 1, characterized in that, The electrical component includes a battery module, which includes multiple battery cells, including at least one monitoring cell, and the temperature sensing wire is disposed on at least one side of the monitoring cell.

4. The energy storage power supply according to claim 3, characterized in that, All the monitored cells share a single temperature sensing line on the same side of the battery module.

5. The energy storage power supply according to claim 4, characterized in that, Multiple monitoring cells are arranged in an array, and the temperature sensing wires are arranged in a bow-shaped or U-shaped pattern.

6. The energy storage power supply according to claim 5, characterized in that, The corner positions of the temperature sensing lines are rounded.

7. The energy storage power supply according to claim 1, characterized in that, The electrical components include a battery module, which includes multiple battery cells. The temperature sensing wire is located on the side where the explosion-proof valve of the battery cell is located, and the temperature sensing wire is positioned close to the explosion-proof valve of the battery cell.

8. The energy storage power supply according to claim 7, characterized in that, The explosion-proof valves of a plurality of the battery cells are located on a first side of the battery cell, and the explosion-proof valves of a plurality of the battery cells are located on a second side of the battery cell that is different from the first side. The battery module includes a heating film, which is disposed on one of the first side and the second side of the battery cell. The temperature sensing wire is disposed between the heating film and the explosion-proof valve of the battery cell.

9. The energy storage power supply according to claim 7, characterized in that, The explosion-proof valves of all the battery cells are located on the first side of the battery cell, and the battery module includes a heating film located on a second side of the battery cell that is different from the first side.

10. The energy storage power supply according to claim 1, characterized in that, The ejection module includes a body and a connecting part. The energy storage power supply includes a fixing member. The connecting part is disposed on the body. The temperature sensing wire passes through the connecting part and extends into the body. The fixing member tightens the connecting part so that the connecting part clamps the temperature sensing wire.

11. The energy storage power supply according to claim 1, characterized in that, The energy storage power supply includes a battery management module, which is communicatively connected to the ejection module. When the temperature sensing wire melts, the ejection module transmits a thermal runaway signal to the battery management module, and the battery management module issues an alarm based on the thermal runaway signal.

12. The energy storage power supply according to claim 11, characterized in that, The battery management module is connected to the ejection module via a signal line, and the signal line is covered with a first protective layer.

13. The energy storage power supply according to claim 11, characterized in that, The ejection module is equipped with a trigger, which abuts against the housing of the energy storage power supply and is electrically connected to the battery management module. When the battery management module detects that the ejection module has been disassembled through the trigger, the battery management module controls the ejection module to fail.

14. The energy storage power supply according to claim 1, characterized in that, The energy storage power supply includes a main battery pack and / or a power supply pack. The main battery pack includes a first battery management module, an inverter, and a battery module. The first battery management module is electrically connected to the inverter and the battery module. The power supply pack includes a second battery management module, which is used to communicate with the first battery management module.

15. The energy storage power supply according to claim 1, characterized in that, The temperature sensing wire is provided with a second protective layer, and / or; There are no obstructions directly in front of the nozzle of the ejection module within a set distance.

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