High-voltage box fire fighting device, high-voltage box and energy storage system

Abstract

The utility model relates to a high-voltage box fire-fighting device, a high-voltage box and an energy storage system. A high-voltage box body in the high-voltage box fire-fighting device is provided with a first side face and a containing cavity. The accommodating cavity is used for accommodating an electrical component; the anti-explosion valve is arranged on the first side surface; the fire extinguishing assembly is arranged in the containing cavity. The detector is arranged in the containing cavity and connected with the fire extinguishing assembly. The detector is configured to detect the temperature of the electrical assembly and trigger starting of the fire extinguishing assembly, so that the fire extinguishing assembly extinguishes fire to the electrical assembly, fire extinguishing of the high-voltage box is achieved, and the high-voltage box body is prevented from being exploded; when a fire in the high-voltage box is detected, the fire extinguishing assembly can be triggered to work in time, so that the fire extinguishing assembly accurately sprays fire to the electrical assembly, the electrical fire is rapidly and effectively extinguished, and the reliability of fire detection and fire fighting is improved; in addition, when the electrical assembly explodes, the explosion-proof valve can be triggered to pop out, the high-voltage box body is prevented from being exploded, and the safety of the high-voltage box body is improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a high-voltage box fire-fighting device, a high-voltage box, and an energy storage system. Background Art

[0002] The high-voltage box is a core component of the energy storage system, enabling charge and discharge control, protection, and monitoring. Its electrical circuits are equipped with circuit protection devices such as fuses, relays, and circuit breakers. These circuits rely on the master control's monitoring logic to gradually disconnect the battery pack, providing comprehensive protection for the battery system. The relays within the high-voltage box typically use hydrogen as an arc-extinguishing medium. If a short circuit occurs within the box and the fuse remains intact, the relays must withstand the high-voltage short-circuit current, posing a risk of explosion and potentially even causing the box to explode.

[0003] At present, fire monitoring of high-voltage boxes is usually completed through fire detectors and fire extinguishing devices installed in the battery compartment of the energy storage system. When a short circuit occurs inside the high-voltage box and an electrical fire occurs, the fire detection delay and fire detection error of the high-voltage box are large. At the same time, the fire extinguishing materials in the battery compartment are difficult to accurately enter the high-voltage box, and the fire extinguishing effect is poor, resulting in the continued risk of explosion of the high-voltage box. Utility Model Content

[0004] Based on this, a high-voltage box fire-fighting device, a high-voltage box and an energy storage system are provided.

[0005] In a first aspect, the present application provides a high-pressure box fire-fighting device, comprising:

[0006] The high-voltage box body is provided with a first side surface and a receiving cavity; the receiving cavity is used to receive the electrical components;

[0007] An explosion-proof valve is arranged on the first side surface;

[0008] A fire extinguishing component is arranged in the accommodating cavity;

[0009] The detector is arranged in the accommodating cavity and is connected to the fire extinguishing component; the detector is configured to detect the temperature of the electrical component and trigger the start of the fire extinguishing component so that the fire extinguishing component extinguishes the fire on the electrical component.

[0010] In one embodiment, the detector includes at least two detection components, the fire extinguishing assembly includes at least two fire extinguishers; the electrical assembly includes a DC electrical component and an AC electrical component; each detection component is connected to each fire extinguisher in a one-to-one correspondence;

[0011] At least one detection member is disposed adjacent to a DC electrical component, and at least one detection member is disposed adjacent to an AC electrical component;

[0012] The output end of at least one fire extinguisher is directed toward the DC electrical component, and the output end of at least one fire extinguisher is directed toward the AC electrical component.

[0013] In one embodiment, a fire extinguisher includes a gas generating assembly and a spray assembly;

[0014] The gas production component is connected to the corresponding detection component, and the gas production component is connected to the corresponding injection component.

[0015] In one embodiment, the fire extinguisher further includes a communication module, the communication module is connected to the injection assembly, the communication module is used to connect to the fire host, the fire host is located outside the accommodation cavity; or the communication module is used to connect to the BCMU.

[0016] In one embodiment, the accommodating cavity is provided with a first installation area and a second installation area, the first installation area is used to arrange DC electrical components, and the second installation area is used to arrange AC electrical components;

[0017] At least one detection member is arranged in the first installation area, and at least one detection member is arranged in the second installation area.

[0018] In one embodiment, the detection member includes a heat-sensitive wire connected to a corresponding fire extinguisher;

[0019] At least one thermally sensitive wire is disposed around a DC electrical component, and at least one thermally sensitive wire is disposed around an AC electrical component.

[0020] In one embodiment, a plurality of limiting members are provided in the accommodating cavity, and each limiting member is used to limit the position of the thermal wire.

[0021] In one embodiment, the electrical component includes a relay; and the explosion-proof valve is disposed adjacent to the relay.

[0022] In a second aspect, the present application provides a high-voltage box, comprising an electrical component and a high-voltage box fire-fighting device as described above; the electrical component is arranged in the high-voltage box fire-fighting device.

[0023] In a third aspect, the present application provides an energy storage system, including a battery cluster and a high-voltage box as described above; the battery cluster is connected to the high-voltage box.

[0024] One of the above technical solutions has the following advantages and beneficial effects:

[0025] The high-voltage box fire-fighting device includes a high-voltage box, an explosion-proof valve, a fire-extinguishing assembly, and a detector. The high-voltage box is provided with a first side and a receiving chamber; the receiving chamber is used to receive the electrical components; the explosion-proof valve is provided on the first side; the fire-extinguishing assembly is provided in the receiving chamber; the detector is provided in the receiving chamber, and the detector is connected to the fire-extinguishing assembly; the detector is configured to detect the temperature of the electrical components and trigger the start of the fire-extinguishing assembly so that the fire-extinguishing assembly extinguishes the fire on the electrical components, thereby achieving fire-fighting of the high-voltage box and preventing the high-voltage box from being blown open. The present application sets a fire-extinguishing assembly and a detector in the receiving chamber of the high-voltage box. The detector can detect the temperature of the electrical components in each receiving chamber. When a fire is detected in the high-voltage box, the fire-extinguishing assembly can be triggered in time to work, so that the fire-extinguishing assembly can spray the fire on the electrical components accurately, thereby achieving rapid and effective extinguishing of electrical fires and improving the reliability of fire detection and fire fighting. By setting an explosion-proof valve on the first side of the high-voltage box, when the electrical components explode, the explosion-proof valve can be triggered to pop out, thereby preventing the high-voltage box from being blown open, thereby improving the safety of the high-voltage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a high-pressure box fire-fighting device in an embodiment of the present application;

[0027] Figure 2 This is a partial structural diagram from a first perspective of a high-pressure box fire-fighting device in an embodiment of the present application;

[0028] Figure 3 This is a partial structural diagram from a second perspective of the high-pressure box fire-fighting device in an embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of the first circuit structure of the high-voltage box fire-fighting device in an embodiment of the present application;

[0030] Figure 5 This is a schematic diagram of the second circuit structure of the high-voltage box fire-fighting device in an embodiment of the present application.

[0031] Reference numerals:

[0032] 10. High-pressure box; 110. Accommodation chamber; 120. First side; 20. Explosion-proof valve; 30. Fire extinguishing assembly; 310. Fire extinguisher; 312. Gas generating assembly; 314. Injection assembly; 316. Communication module; 40. Detector; 410. Detection component; 50. Limiting component; 60. Fire host; 70. BCMU. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0034] It should be noted that the terms "first," "second," and the like in the specification and claims of the present application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the numerals used in this manner are interchangeable where appropriate for the embodiments of the present application described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover inclusions that are not listed. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or that are inherent to these processes, methods, products, or apparatus.

[0035] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0036] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0037] Additionally, the term "plurality" shall mean two or more.

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] In one embodiment, Figure 1 、 Figure 2 and Figure 4As shown, a high-voltage box fire-fighting device is provided, including a high-voltage box body 10, an explosion-proof valve 20, a fire-extinguishing assembly 30 and a detector 40. The high-voltage box body 10 is provided with a first side surface 120 and a receiving chamber 110; the receiving chamber 110 is used to receive electrical components; the explosion-proof valve 20 is provided on the first side surface 120; the fire-extinguishing assembly 30 is provided in the receiving chamber 110; the detector 40 is provided in the receiving chamber 110, and the detector 40 is connected to the fire-extinguishing assembly 30; the detector 40 is configured to detect the temperature of the electrical components and trigger the start-up of the fire-extinguishing assembly 30, so that the fire-extinguishing assembly 30 extinguishes the fire on the electrical components.

[0040] The high-voltage housing 10 can be used to house electrical components and can be installed above a battery cluster. For example, in an energy storage system, the system includes several battery clusters, each of which is topped by a high-voltage housing 10. The high-voltage housing 10 can be made of metal or non-metallic materials. The shape of the high-voltage housing 10 can be determined based on the actual product application scenario. For example, the high-voltage housing 10 can be square.

[0041] The high-voltage housing 10 is provided with a housing chamber 110 for accommodating electrical components, which may include relays, fuses, sensors, circuit breakers, shunts, contactors, etc.; electrical components also include power converters and transformers, etc. The high-voltage housing 10 is also provided with a first side surface 120, which is used to accommodate the explosion-proof valve 20. Exemplarily, the high-voltage housing 10 may include a lower housing and an upper housing, the lower housing including a front panel and a first bent plate, which are welded together; the lower housing including a second bent plate, and the upper and lower housings connected by bolts; it should be noted that the first and second bent plates may be bent sheet metal plates.

[0042] The first side 120 of the high-voltage box 10 can be a front panel, that is, the explosion-proof valve 20 is set on the front panel of the high-voltage chamber. In one example, the front panel can also be provided with a P+ interface, a P- interface, a B+ interface, a B- interface, a switch, an indicator light, a communication port, and a power interface; the P- interface and the P+ interface can be set on the left side of the front panel, the B+ interface and the B- interface can be set on the right side of the front panel, and the switch can be set in the middle of the front panel. The electrical component is provided with a main negative circuit and a main positive circuit. The main negative circuit is connected to the shunt, fuse, contactor and circuit breaker in sequence from the B- interface, and finally connected to P-; the main positive circuit is connected to the fuse, contactor, sensor and circuit breaker in sequence from the B+ interface, and finally connected to P+. It should be noted that the B+ interface refers to the DC high-voltage output terminal of the device; the B- interface refers to the DC low-voltage output terminal of the device; the P+ interface refers to the AC high-voltage input terminal of the device; and the P- interface refers to the AC low-voltage input terminal of the device.

[0043] The explosion-proof valve 20 can be mounted on the first side 120 of the high-voltage housing 10 by means of snap-fitting, bonding, or welding. The explosion-proof valve 20 is weaker than the high-voltage housing 10. For example, the high-voltage housing 10 can be a housing with a protection grade of IP67. When an electrical component (such as a relay) explodes and the pressure in the high-voltage housing 10 reaches a certain value, the explosion-proof valve 20 will spring open from the first side 120 of the high-voltage housing 10, releasing the pressure in the accommodating cavity 110 of the high-voltage housing 10, thereby preventing the high-voltage housing 10 from exploding. This ensures that the high-voltage housing 10 does not have the risk of explosion, thereby improving the safety of the high-voltage housing 10.

[0044] The fire extinguishing assembly 30 is disposed within the housing 110 of the high-voltage housing 10. For example, the fire extinguishing assembly 30 can be attached to the bottom surface of the housing 110 by screwing, welding, or clamping. The fire extinguishing assembly 30 can be used to spray a fire extinguishing agent onto the electrical components, thereby extinguishing fires there. The fire extinguishing agent can be, but is not limited to, perfluorohexanone.

[0045] The detector 40 can be arranged in the accommodating cavity 110 of the high-voltage box 10 by means of snap-on connection, crimping connection or screw connection. The detector 40 can be a temperature detector 40, which can be used to detect the temperature of the electrical components in the accommodating cavity 110. Based on the fact that the detector 40 is electrically connected to the fire extinguishing component 30, the detector 40 detects the temperature of the electrical components in real time. When the detected temperature exceeds the preset temperature threshold, the detector 40 can determine that an electrical fire has occurred or is about to occur in the electrical components, thereby triggering the fire extinguishing component 30 to start, so that the fire extinguishing component 30 outputs fire extinguishing agent to the electrical components to achieve fire extinguishing of the fire extinguishing component 30. For example, the preset temperature threshold can be 170℃+15℃, and the output end of the fire extinguishing component 30 is facing the electrical components. When the detector 40 detects that the temperature of the electrical components reaches 170℃+15℃, the fire extinguishing component 30 starts working, so that the output end of the fire extinguishing component 30 outputs fire extinguishing agent to the electrical components, thereby achieving fast and accurate fire extinguishing of the electrical components in the high-voltage box 10.

[0046] In the above embodiment, the high-voltage box body 10 is provided with a first side surface 120 and an accommodating cavity 110; the accommodating cavity 110 is used to accommodate electrical components; the explosion-proof valve 20 is provided on the first side surface 120; the fire extinguishing component 30 is provided in the accommodating cavity 110; the detector 40 is provided in the accommodating cavity 110, and the detector 40 is connected to the fire extinguishing component 30; the detector 40 detects the temperature of the electrical components and triggers the start of the fire extinguishing component 30, so that the fire extinguishing component 30 extinguishes the fire on the electrical components, realizes fire extinguishing of the high-voltage box, and prevents the high-voltage box body 10 from being blown open. The present application sets a fire extinguishing assembly 30 and a detector 40 in the accommodating cavity 110 of the high-voltage box 10. The detector 40 can detect the temperature of the electrical components in each accommodating cavity 110. When a fire is detected in the high-voltage box, the fire extinguishing assembly 30 can be triggered in time to operate, so that the fire extinguishing assembly 30 can accurately spray fire to the electrical components to extinguish the fire, thereby quickly and effectively extinguishing electrical fires and improving the reliability of fire detection and fire fighting; by setting an explosion-proof valve 20 on the first side 120 of the high-voltage box 10, when the electrical components explode, the explosion-proof valve 20 can be triggered to pop out, thereby preventing the high-voltage box 10 from being blown open, thereby improving the safety of the high-voltage box 10.

[0047] In one embodiment, Figure 2 、 Figure 3 and Figure 4 As shown, the detector 40 includes at least two detection components 410, and the fire extinguishing assembly 30 includes at least two fire extinguishers 310; the electrical assembly includes a DC electrical component and an AC electrical component; each detection component 410 is connected to each fire extinguisher 310 in a one-to-one correspondence; at least one detection component 410 is arranged adjacent to the DC electrical component, and at least one detection component 410 is arranged adjacent to the AC electrical component; the output end of at least one fire extinguisher 310 is facing the DC electrical component, and the output end of at least one fire extinguisher 310 is facing the AC electrical component.

[0048] Electrical components can be divided into DC components and AC components. For example, DC components can include DC relays, sensors, circuit breakers, and shunts, while AC components can include AC relays and transformers. To reduce signal interference between DC and AC signals, the DC and AC components can be isolated within the accommodating chamber 110 of the high-voltage housing 10. Specifically, the DC components can be placed on one side of the accommodating chamber 110, while the AC components can be placed on the other side.

[0049] The detector 40 can be divided into at least two detection members 410. Each detection member 410 can be installed in the receiving cavity 110 of the high-voltage box 10 by means of clipping, crimping, or screwing. At least one detection member 410 is installed adjacent to a DC electrical component, and at least one detection member 410 is installed adjacent to an AC component. Thus, the corresponding detection member 410 can detect the temperature of the DC electrical component in the receiving cavity 110, and the corresponding detection member 410 can detect the temperature of the AC electrical component in the receiving cavity 110.

[0050] The fire extinguishing assembly 30 can be divided into at least two fire extinguishers 310, each of which is used to initiate fire extinguishing operations based on the triggering of a corresponding detector 410. The output end of at least one fire extinguisher 310 is directed toward a DC electrical component. When the corresponding fire extinguisher 310 is activated, the output end of the fire extinguisher 310 can spray fire extinguishing agent toward the DC electrical component, thereby achieving rapid and accurate fire extinguishing of the DC electrical component. The output end of at least one fire extinguisher 310 is directed toward an AC electrical component. When the corresponding fire extinguisher 310 is activated, the output end of the fire extinguisher 310 can spray fire extinguishing agent toward the AC electrical component, thereby achieving rapid and accurate fire extinguishing of the AC electrical component.

[0051] Based on the one-to-one connection between each fire extinguisher 310 and each detector 410, the corresponding detector 410 detects the temperature of the DC electrical component in real time. When the detected temperature exceeds a preset temperature threshold, it is determined that an electrical fire has occurred or is about to occur in the DC electrical component, thereby triggering the corresponding fire extinguisher 310 to activate, causing the output end of the fire extinguisher 310 to output fire extinguishing agent to the DC electrical component, thereby quickly and accurately extinguishing the DC detection component within the high-voltage box 10. Similarly, the corresponding detector 410 detects the temperature of the AC electrical component in real time. When the detected temperature exceeds a preset temperature threshold, it is determined that an electrical fire has occurred or is about to occur in the AC electrical component, thereby triggering the corresponding fire extinguisher 310 to activate, causing the output end of the fire extinguisher 310 to output fire extinguishing agent to the AC electrical component, thereby quickly and accurately extinguishing the AC detection component within the high-voltage box 10.

[0052] In the above-mentioned embodiment, by arranging at least two fire extinguishers 310 and at least two detectors 410 in the accommodating cavity 110 of the high-voltage box body 10, the detectors 410 can detect the temperature of the DC electrical components and the AC electrical components in each accommodating cavity 110. When a fire is detected in the high-voltage box, the corresponding fire extinguisher 310 can be triggered in time to work, so that the fire extinguisher 310 can accurately spray the DC electrical components or AC electrical components where the fire occurs to extinguish the fire, thereby achieving rapid and effective extinguishing of electrical fires and improving the reliability of fire detection and fire fighting; by arranging the detectors 410 and fire extinguishers 310 separately for the DC electrical components and the AC electrical components, the fire extinguisher 310 can be sprayed separately when a fire occurs in different areas, thereby achieving a rapid fire extinguishing effect.

[0053] In one embodiment, Figure 5 As shown, the fire extinguisher 310 includes a gas generating assembly 312 and an injection assembly 314 ; the gas generating assembly 312 is connected to the corresponding detection component 410 , and the gas generating assembly 312 is connected to the corresponding injection assembly 314 .

[0054] The spray assembly 314 can be used to store fire extinguishing agent and can also output fire extinguishing agent when it is turned on. When the gas generating assembly 312 is activated, it can quickly generate high-pressure gas. The high-pressure gas causes the spray assembly 314 to turn on. Under the action of the high-pressure gas, the fire extinguishing agent in the spray assembly 314 is quickly sprayed onto the corresponding electrical components (DC electrical components or AC electrical components), thereby extinguishing the fire.

[0055] The gas-generating assembly 312 is connected to a corresponding detector 410, which detects the temperature of the DC electrical component (or AC electrical component) in real time. When the detected temperature exceeds a preset temperature threshold, the corresponding gas-generating assembly 312 is triggered to activate, causing the gas-generating assembly 312 to rapidly produce high-pressure gas. The gas-generating assembly 312 is connected to a corresponding injection assembly 314. The high-pressure gas generated by the gas-generating assembly 312 applies pressure to the corresponding injection assembly 314, causing it to open. Fire extinguishing agent is then sprayed from the output end of the injection assembly 314 onto the DC electrical component (or AC electrical component), achieving rapid and accurate firefighting of the DC detection assembly within the high-voltage box 10.

[0056] In one embodiment, Figure 5 As shown, the fire extinguisher 310 further includes a communication module 316 , which is connected to the injection assembly 314 . The communication module 316 is used to connect to the fire host 60 , which is located outside the accommodating chamber 110 ; or the communication module 316 is used to connect to the BCMU 70 .

[0057] The communication module 316 can be used to establish a communication connection with the fire host 60 or BCMU 70. The consumer host can be the fire host 60 in the energy storage system, which can be set in the electrical compartment of the energy storage system; BCMU 70 refers to the battery cluster management unit.

[0058] For example, the communication module 316 may be provided with a feedback signal line, which connects the communication module 316 to the fire host 60 or BCMU 70 via the feedback signal line. When the detection spray assembly 314 performs a spraying and fire extinguishing operation, the communication module 316 generates a spraying and fire signal and transmits the spraying and fire signal to the fire host 60 or the BCMU 70 in the high-voltage box 10 via the feedback signal line. The fire host 60 or BCMU 70 receives the fire signal and activates an alarm, providing a timely reminder to the user. Furthermore, the BCMU 70 is connected to the EMS or PCS for communication, and the BCMU 70 can report an emergency processing signal to the EMS or PCS, which in turn outputs instructions such as stopping charging and discharging, disconnecting the combiner cabinet disconnector, or stopping the high-voltage output of the energy storage system, thereby improving system safety.

[0059] In one embodiment, the accommodating cavity 110 is provided with a first installation area and a second installation area, the first installation area is used to set DC electrical components, and the second installation area is used to set AC electrical components; at least one detection member 410 is provided in the first installation area, and at least one detection member 410 is provided in the second installation area.

[0060] Among them, the first installation area and the second installation area can be arranged at intervals, the first installation area is used to install DC electrical components, for example, DC electrical components can be arranged in the first installation area by means of clipping or screwing; the second installation area is used to install AC electrical components, for example, AC electrical components can be arranged in the second installation area by means of clipping or screwing.

[0061] At least one detector 410 is set in the first installation area, and the corresponding detector 410 is used to detect the temperature of the DC electrical components in the first installation area; at least one detector 410 is set in the second installation area, and the corresponding detector 410 is used to detect the temperature of the AC electrical components in the second installation area.

[0062] The corresponding detector 410 detects the temperature of the DC electrical components in the first installation area in real time. When the detected temperature exceeds a preset temperature threshold, it is determined that an electrical fire has occurred or is about to occur in the DC electrical components, thereby triggering the activation of the corresponding fire extinguisher 310, causing the output end of the fire extinguisher 310 to output fire extinguishing agent to the DC electrical components in the first installation area, thereby quickly and accurately extinguishing the DC detection components in the first installation area. Similarly, the corresponding detector 410 detects the temperature of the AC electrical components in the second installation area in real time. When the detected temperature exceeds a preset temperature threshold, it is determined that an electrical fire has occurred or is about to occur in the AC electrical components in the second installation area, thereby triggering the activation of the corresponding fire extinguisher 310, causing the output end of the fire extinguisher 310 to output fire extinguishing agent to the AC electrical components in the second installation area, thereby quickly and accurately extinguishing the AC detection components in the second installation area. By arranging the DC and AC electrical components in different areas, fire detection can be performed in different areas, and the corresponding fire extinguishers 310 can be controlled to spray fire in the corresponding areas separately, achieving a quick and accurate fire extinguishing effect.

[0063] In one embodiment, the detection element 410 includes a thermal wire connected to a corresponding fire extinguisher 310 ; at least one thermal wire is disposed around a DC electrical component, and at least one thermal wire is disposed around an AC electrical component.

[0064] Among them, the thermistor is also called a heat-sensitive rope, and the ignition temperature of the thermistor can be 170°C + 15°C. Based on the thermistor, the corresponding fire extinguisher 310 is connected. When the thermistor is ignited, the thermistor can start the corresponding fire extinguisher 310, so that the fire extinguisher 310 can quickly spray the fire extinguishing agent to achieve fire fighting on the DC electrical components (or AC electrical components). Exemplarily, the thermistor is connected to the gas-producing component 312 of the corresponding fire extinguisher 310. When the thermistor is ignited, the thermistor can start the corresponding gas-producing component 312, so that the gas-producing component 312 can start quickly and generate high-pressure gas. The high-pressure gas causes the spray component 314 to open, and then the spray component 314 sprays the fire extinguishing agent to the DC electrical components (or AC electrical components) to achieve fire fighting.

[0065] At least one thermistor is positioned around a DC electrical component, so that at least one thermistor is positioned adjacent to the DC electrical component. When a DC electrical component short-circuits and a fire occurs, the flame ignites the adjacent thermistor, which in turn activates the corresponding fire extinguisher 310, causing the fire extinguisher 310 to spray fire extinguishing agent toward the DC electrical component on fire, thereby quickly and accurately extinguishing the fire. At least one thermistor is positioned around an AC electrical component, so that at least one thermistor is positioned adjacent to the AC electrical component. When an AC electrical component short-circuits and a fire occurs, the flame ignites the adjacent thermistor, which in turn activates the corresponding fire extinguisher 310, causing the fire extinguisher 310 to spray fire extinguishing agent toward the AC electrical component on fire, thereby quickly and accurately extinguishing the fire. By placing the thermistor near each motor component, the temperature of each electrical component can be accurately detected in real time, enabling the timely detection of fire hazards and improving the reliability of fire detection.

[0066] For example, the thermal wire can be arranged in a circle along the accommodating cavity 110 of the high-voltage box 10 to achieve all-round detection. When a fire occurs in the accommodating cavity 110 of the high-voltage box 10, the flame ignites the thermal wire, and the thermal wire activates the gas-producing component 312, causing the gas-producing component 312 to start quickly, generating high-pressure gas, and then opening the injection component 314. The perfluorohexanone fire extinguishing agent is instantly pushed out of the injection component 314 by the high-pressure gas, flooding the entire space in the accommodating cavity 110 of the high-voltage box 10, thereby achieving rapid and accurate fire extinguishing.

[0067] In the above embodiment, the high-voltage box 10 is integrated with the automatic fire detection and fire extinguishing functions. When the fire extinguishing is started, the high-voltage box 10 can be fully flooded and the fire can be extinguished within seconds, thereby achieving rapid fire extinguishing. The electrical fire can be extinguished quickly and effectively to avoid greater harm.

[0068] In one embodiment, Figure 2 and Figure 3 As shown, a plurality of limiting members 50 are provided in the accommodating cavity 110 , and each limiting member 50 is used to limit the position of the thermal wire.

[0069] The retaining member 50 can be used to position the thermal wire so that it is placed adjacent to electrical components (DC and current components), preventing the thermal wire from loosening and causing inaccurate temperature detection. For example, the retaining member 50 can be a bent member that can lock the thermal wire in place within the receiving cavity 110.

[0070] In one embodiment, the electrical component includes a relay; the explosion-proof valve 20 is disposed near the relay.

[0071] Among them, the relay can use hydrogen as the arc extinguishing medium.

[0072] By placing the explosion-proof valve 20 close to the relay, when a short circuit occurs in the high-voltage box 10, if the relay explodes, the explosion-proof valve 20 can be opened, thereby timely relieving the pressure of the high-voltage box 10 and preventing the high-voltage box 10 from being blown open by an explosion, thereby improving the safety of the high-voltage box 10.

[0073] In one embodiment, a high-voltage box is provided, comprising an electrical component and a high-voltage box fire-fighting device as described above; the electrical component is arranged in the high-voltage box fire-fighting device.

[0074] For the detailed description of the electrical components and the high-voltage box fire-fighting device, please refer to the detailed description of the electrical components and the high-voltage box fire-fighting device in the above embodiments, which will not be repeated here.

[0075] The high-voltage box fire-fighting device includes a high-voltage box body, an explosion-proof valve, a fire-extinguishing assembly and a detector. The high-voltage box body is provided with a first side and a receiving cavity; the receiving cavity is used to receive electrical components; the explosion-proof valve is provided on the first side; the fire-extinguishing assembly is provided in the receiving cavity; the detector is provided in the receiving cavity and is connected to the fire-extinguishing assembly; the detector is configured to detect the temperature of the electrical components and trigger the activation of the fire-extinguishing assembly so that the fire-extinguishing assembly extinguishes the fire on the electrical components, thereby achieving fire-fighting of the high-voltage box and preventing the high-voltage box body from being blown open. The present application arranges the fire-extinguishing assembly and the detector in the receiving cavity of the high-voltage box body. The detector can detect the temperature of the electrical components in each receiving cavity. When a fire is detected in the high-voltage box, the fire-extinguishing assembly can be triggered in time to work so that the fire-extinguishing assembly sprays the fire on the electrical components accurately, thereby achieving rapid and effective extinguishing of the electrical fire and improving the reliability of fire detection and fire fighting. By arranging the explosion-proof valve on the first side of the high-voltage box body, when the electrical components explode, the explosion-proof valve can be triggered to pop out, thereby preventing the high-voltage box body from being blown open, thereby improving the safety of the high-voltage box.

[0076] In one embodiment, an energy storage system is provided, including a battery cluster and the high-voltage box as described above; the battery cluster is connected to the high-voltage box.

[0077] The battery cluster is composed of several battery modules connected in series and / or in parallel, and the battery module is composed of several single cells connected in series and / or in parallel.

[0078] The high-voltage box can be set above the battery cluster. By arranging a fire extinguishing component and a detector in the accommodating cavity of the high-voltage box, the detector can detect the temperature of the electrical components in each accommodating cavity. When a fire is detected in the high-voltage box, the fire extinguishing component can be triggered in time to spray the electrical components to extinguish the fire accurately, thereby quickly and effectively extinguishing electrical fires and improving the reliability of fire detection and firefighting. By arranging an explosion-proof valve on the first side of the high-voltage box, when the electrical component explodes, the explosion-proof valve can be triggered to pop out, preventing the high-voltage box from being blown open, thereby improving the safety of the energy storage system.

[0079] It should be noted that the energy storage system may further include components such as a combiner cabinet, and a specific energy storage system may include more components than those described in the above embodiments, or may combine certain components, or have a different component arrangement.

[0080] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A high-pressure box fire-fighting device, characterized in that: include: A high-voltage box body is provided with a first side surface and a receiving cavity; the receiving cavity is used to receive electrical components; an explosion-proof valve, the explosion-proof valve being arranged on the first side surface; a fire extinguishing assembly, the fire extinguishing assembly being arranged in the accommodating cavity; A detector is arranged in the accommodating cavity and is connected to the fire extinguishing component; the detector is configured to detect the temperature of the electrical component and trigger the start of the fire extinguishing component so that the fire extinguishing component extinguishes the fire on the electrical component.

2. The high-pressure box fire-fighting device according to claim 1, characterized in that: The detector includes at least two detection members, the fire extinguishing assembly includes at least two fire extinguishers; the electrical assembly includes a DC electrical component and an AC electrical component; each of the detection members is connected to each of the fire extinguishers in a one-to-one correspondence; At least one of the detection members is disposed adjacent to the DC electrical component, and at least one of the detection members is disposed adjacent to the AC electrical component; The output end of at least one of the fire extinguishers faces the DC electrical component, and the output end of at least one of the fire extinguishers faces the AC electrical component.

3. The high-pressure box fire-fighting device according to claim 2, characterized in that: The fire extinguisher includes a gas generating component and a spraying component; The gas production component is connected to the corresponding detection component, and the gas production component is connected to the corresponding injection component.

4. The high-pressure box fire-fighting device according to claim 3, characterized in that: The fire extinguisher further includes a communication module, which is connected to the injection assembly and is used to connect to a fire host, which is located outside the accommodating cavity; or the communication module is used to connect to a BCMU.

5. The high-pressure box fire-fighting device according to claim 2, characterized in that: The accommodating cavity is provided with a first installation area and a second installation area, the first installation area is used to install the DC electrical component, and the second installation area is used to install the AC electrical component; At least one of the detection members is disposed in the first installation area, and at least one of the detection members is disposed in the second installation area.

6. The high-pressure box fire-fighting device according to claim 5, characterized in that: The detection element includes a heat-sensitive wire, and the heat-sensitive wire is connected to the corresponding fire extinguisher; At least one of the heat-sensitive wires is disposed around the DC electrical component, and at least one of the heat-sensitive wires is disposed around the AC electrical component.

7. The high-pressure box fire-fighting device according to claim 6, characterized in that: A plurality of limiting members are provided in the accommodating cavity, and each limiting member is used to limit the position of the thermal wire.

8. The high-pressure box fire-fighting device according to any one of claims 1 to 7, characterized in that: The electrical component includes a relay; the explosion-proof valve is arranged close to the relay.

9. A high-voltage box, characterized in that: It comprises an electrical component and a high-voltage box fire-fighting device according to any one of claims 1 to 8; the electrical component is arranged in the high-voltage box fire-fighting device.

10. An energy storage system, characterized in that: It comprises a battery cluster and a high-voltage box as claimed in claim 9; the battery cluster is connected to the high-voltage box.

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