Energy storage system of liquid cooling outdoor cabinet

Abstract

The embodiment of the utility model provides an energy storage system of a liquid cooling outdoor cabinet. The energy storage system comprises an energy storage outdoor cabinet, a battery pack, a water pipe, an electromagnetic switch valve, a sensor group, an energy management system and a fire extinguishing device, the battery pack is arranged in the energy storage outdoor cabinet, the water pipe is connected with the energy storage outdoor cabinet and the electromagnetic switch valve, and the energy management system is connected with the electromagnetic switch valve, the sensor set and the fire extinguishing device. A sensor group and an energy management system are arranged, when a battery pack in the energy storage outdoor cabinet breaks out a fire, sensing signals are detected through the sensor group, the energy management system judges whether the sensing signals detected by the sensor group exceed a set threshold value or not, and if the sensing signals exceed the set threshold value, a fire extinguishing device is started and controlled to work, and an electromagnetic switch valve is controlled; according to the energy storage outdoor cabinet, water in the water pipe is controlled to flow into the energy storage outdoor cabinet, fire extinguishing is achieved, a fire-fighting signal probe does not need to be arranged in each battery pack, once detonation and fire break out, automatic triggering is conducted for fire-fighting control, manual maintenance is not needed, heat spreading is not likely to happen, and personal potential safety hazards and property losses are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage systems, and in particular to a liquid-cooled outdoor cabinet energy storage system. Background Art

[0002] For existing fire protection systems in small outdoor cabinets, liquid-cooled battery packs generally adopt an IP67 design. Fire signal probes must be installed in each battery pack, and a dedicated fire extinguishing agent channel is required to reach the battery pack directly. Fire water is usually supplied by a combination of a spray head and a fire connector at the bottom of the cabinet, with limited flow. Once a fire breaks out, manually connecting the hose to the fire outlet can easily pose a personal safety hazard. If the fire is not automatically triggered and unattended, heat can easily spread, causing greater property damage. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a liquid-cooled outdoor cabinet energy storage system to solve the problem in the prior art that fire cabinets need to be manually extinguished, which easily creates personal safety hazards, and when not automatically triggered and unmaintained, heat spreads easily, causing greater property losses.

[0004] An embodiment of the present application provides a liquid-cooled outdoor cabinet energy storage system, comprising: an outdoor energy storage cabinet, a battery pack, a water pipe, an electromagnetic switch valve, a sensor group, an energy management system, and a fire extinguishing device; the battery pack is arranged in the outdoor energy storage cabinet, the water pipe connects the outdoor energy storage cabinet and the electromagnetic switch valve, and the energy management system connects the electromagnetic switch valve, the sensor group, and the fire extinguishing device; the energy management system is used to determine whether the sensor signal detected by the sensor group exceeds a set threshold value, and if so, start to control the fire extinguishing device to work and control the electromagnetic switch valve to control the water in the water pipe to flow into the outdoor energy storage cabinet.

[0005] Furthermore, the energy storage outdoor cabinet includes a cabinet body and a cabinet door that are connected to each other, the cabinet body includes an upper cabinet body and a lower cabinet body, and the lower cabinet body is divided into multiple battery cabinets that accommodate the battery packs.

[0006] Furthermore, a water inlet and an air inlet are provided at the bottom of the energy storage outdoor cabinet, and the water pipe passes through the water inlet pipe and is passed from the lower cabinet body to the upper cabinet body.

[0007] Furthermore, the fire extinguishing device includes an explosion-proof exhaust fan, which is arranged on the bottom plate of the upper cabinet and is connected to the energy management system.

[0008] Furthermore, the energy storage outdoor cabinets are provided in plurality, the water pipes are provided corresponding to the energy storage outdoor cabinets, and the plurality of water pipes are connected in parallel to the electromagnetic switch valve.

[0009] Furthermore, the sensor group is arranged on the outside of the energy storage outdoor cabinet.

[0010] Furthermore, the sensor group is arranged on the inner side of the cabinet door.

[0011] Furthermore, the sensor group includes a combustible gas detector, and the combustible gas detector is connected to the energy management system.

[0012] Furthermore, the sensor group includes a temperature sensor, and the temperature sensor is connected to the energy management system.

[0013] Furthermore, the sensor group includes a smoke sensor, and the smoke sensor is connected to the energy management system.

[0014] As described above, the embodiment of the present application is provided with a sensor group and an energy management system. When a fire occurs in the battery pack in the outdoor energy storage cabinet, the sensor group detects the sensor signal, and the energy management system determines whether the sensor signal detected by the sensor group exceeds the set threshold. If it exceeds the set threshold, the fire extinguishing device is controlled to work and the electromagnetic switch valve is controlled to control the water in the water pipe to flow into the outdoor energy storage cabinet to achieve fire extinguishing. There is no need to arrange a fire signal probe in each battery pack. Once a fire occurs, the fire control is automatically triggered, no manual maintenance is required, and heat spread is not easy to occur, thereby avoiding personal safety hazards and property losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A schematic structural diagram of a liquid-cooled outdoor cabinet energy storage system provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the connection structure of an outdoor energy storage cabinet and an electromagnetic switch valve of a liquid-cooled outdoor energy storage system provided in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of the structure of an outdoor energy storage cabinet of a liquid-cooled outdoor energy storage system provided in an embodiment of the present application;

[0019] Icons: 10. Outdoor energy storage cabinet; 11. Explosion-proof exhaust fan; 12. Battery pack; 13. Air inlet; 14. Upper cabinet; 15. Lower cabinet; 16. Cabinet door; 20. Water pipe; 30. Solenoid switch valve. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0021] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0022] Please see Figure 1 , Figure 1 This is a structural diagram of a liquid-cooled outdoor cabinet energy storage system provided in an embodiment of the present application. Figure 1 and Figure 2 The liquid-cooled outdoor cabinet energy storage system includes an outdoor energy storage cabinet 10, a battery pack 12, a water pipe 20, an electromagnetic switch valve 30, a sensor group, an energy management system and a fire extinguishing device; the battery pack 12 is arranged in the outdoor energy storage cabinet 10, the water pipe 20 connects the outdoor energy storage cabinet 10 and the electromagnetic switch valve 30, and the energy management system connects the electromagnetic switch valve 30, the sensor group and the fire extinguishing device; the energy management system is used to determine whether the sensor signal detected by the sensor group exceeds a set threshold. If the set threshold is exceeded, the fire extinguishing device is controlled to work and the electromagnetic switch valve 30 is controlled to control the water in the water pipe 20 to flow into the outdoor energy storage cabinet 10.

[0023] As described above, the embodiment of the present application is provided with a sensor group and an energy management system. When a fire occurs in the battery pack 12 in the energy storage outdoor cabinet 10, the sensor group detects the sensor signal, and the energy management system determines whether the sensor signal detected by the sensor group exceeds the set threshold. If it exceeds the set threshold, the fire extinguishing device is controlled to work and the electromagnetic switch valve 30 is controlled to control the water in the water pipe 20 to flow into the energy storage outdoor cabinet 10 to achieve fire extinguishing. There is no need to arrange a fire signal probe in each battery pack 12. Once a fire occurs, the fire control is automatically triggered, no manual maintenance is required, and heat spread is not easy to occur, thereby avoiding personal safety hazards and property losses.

[0024] It can be understood that whether the sensor signal detected by the sensor group exceeds the set threshold is determined. If it exceeds the set threshold, the fire extinguishing device is started to control the operation and the electromagnetic switch valve is controlled. This technical means has multiple existing implementation methods. The specific software implementation method does not fall within the scope of protection of this application, and the embodiments of this application do not limit this.

[0025] In some embodiments, please refer to Figure 3The energy storage outdoor cabinet 10 includes a cabinet body and a cabinet door 16 that are connected to each other. The cabinet body includes an upper cabinet body 14 and a lower cabinet body 15. The lower cabinet body 15 is divided into multiple battery cabinets that accommodate the battery packs 12. The bottom of the energy storage outdoor cabinet 10 is provided with a water inlet (not shown in the figure) and an air inlet 13. The water pipe 20 passes through the water inlet and is passed from the lower cabinet body 15 to the upper cabinet body 14.

[0026] There are multiple outdoor energy storage cabinets 10 , and the water pipes 20 are arranged corresponding to the outdoor energy storage cabinets 10 . The multiple water pipes 20 are connected in parallel to the electromagnetic switch valve 30 .

[0027] In some embodiments, the fire extinguishing device includes an explosion-proof exhaust fan 11, which is disposed on the bottom plate of the upper cabinet 14 and is connected to the energy management system.

[0028] In some embodiments, the sensor group is disposed on the outside of the energy storage outdoor cabinet 10 .

[0029] In some embodiments, the sensor group is located on the inner side of the cabinet door 16 .

[0030] In some embodiments, the sensor group includes a combustible gas detector, a temperature sensor and a smoke sensor, and the combustible gas detector, the temperature sensor and the smoke sensor are connected to the energy management system; wherein, the combustible gas detector is used to detect the concentration of combustible gas, the temperature sensor is used to detect the air temperature, and the smoke sensor is used to detect the smoke concentration in the air.

[0031] Optionally, the energy management system determines whether the combustible gas concentration exceeds a set gas concentration threshold; if the combustible gas concentration exceeds the set gas concentration threshold, the explosion-proof exhaust fan is controlled to operate to control the concentration of the combustible gas; the energy management system determines whether the temperature exceeds the set temperature threshold and whether the smoke concentration exceeds the set smoke concentration threshold; if the temperature exceeds the set temperature threshold and the smoke concentration exceeds the set smoke concentration threshold, the fire extinguishing device is activated to extinguish the fire.

[0032] The embodiment of the present application adopts a built-in explosion-proof exhaust fan 11 to prevent sun and rain, and has a longer service life; it adopts a temperature sensor, a smoke sensor, and a dual-signal trigger mode of smoke and temperature sensing, which can effectively avoid the sensor's false alarm state. After detecting that the fire protection inside the outdoor cabinet cannot completely extinguish the fire, the energy management system EMS can accurately locate which outdoor cabinet has a fire, and can automatically open the electromagnetic switch valve 30 to connect to the water source to play a role in fire extinguishing. The electromagnetic switch valve 30 can also be in manual mode for use in emergency situations.

[0033] In addition, the embodiment of the present application adopts a built-in explosion-proof exhaust fan 11, which makes the overall system more beautiful, unaffected by bad weather, and has a longer lifespan. The built-in type does not require the addition of explosion-proof exhaust fan 11 louvers, and no special protection is required; the design adopts a battery pack 12 cover-free design, which no longer requires the placement of various sensors in the battery pack 12, nor does it require a special fire hose to be connected to each battery pack 12. It can also detect the fire signal in the first time and spray the agent, which can significantly reduce the cost of the fire protection system. At the same time, the fire extinguishing agent in the cabinet and the fire water outside the cabinet are not blocked, and can act on the fire cell in the first time to play a fire extinguishing role; the fire alarm signal is transmitted to the energy management system, which accurately locates which cabinet has a fire and has not been extinguished in the first level fire protection. The energy management system can control the electromagnetic switch valve 30 to accurately inject water into the outdoor cabinet to complete reliable fire extinguishing. The manual mode of the electromagnetic switch valve 30 can also be used to deal with the situation where the fire protection system in the cabinet fails to start due to a failure.

[0034] Understandably, the industry often uses front door panels to arrange fans, which lacks aesthetic appeal and is easily affected by bad weather and prone to malfunctions. The embodiment of the present application uses a built-in explosion-proof exhaust fan 11, which makes the overall system more beautiful, unaffected by bad weather, and has a longer lifespan. The external fans used in the industry are generally equipped with blinds or rain shields, which are more expensive and occupy a larger area. The built-in type used in the embodiment of the present application does not require the addition of blinds or rain shields for the explosion-proof exhaust fan 11, and no special protection is required.

[0035] The industry generally adopts two solutions for closed battery packs. The first category is to add a fire probe in each battery pack, and the fire pipe is directly connected to each battery pack. The fire protection system has many parts and a relatively high failure rate, which also requires a cumbersome design to seal each battery pack, making the cost of the entire system high. The second category is to spray the fire-fighting agent directly onto the battery pack. The agent cannot reach the interior of the battery pack directly at the first time, and the fire-extinguishing effect is average. The agent can only take effect when the battery pack thermally runs away. The fire cannot be extinguished immediately, which is likely to cause large losses. The embodiment of the present application adopts a battery pack cover-free design, which eliminates the need to arrange various sensors in the battery pack 12. External sensors can directly detect the cabinet, and there is no need for special fire hoses to be connected to each battery pack 12. Fire signals can be detected in the first time, and spray agents can be sprayed into the battery pack 12, which can significantly reduce the cost of the fire protection system and improve the fire extinguishing effect. After the above-mentioned aerosol, perfluorohexanone and other agent fire protection agents fail to completely extinguish the fire, compared with the closed battery pack adopted by the industry, the coverless battery pack 12 of the embodiment of the present application is not blocked, and the fire water outside the cabinet can act on the burning battery cell in the first time, playing a role in rapid fire extinguishing.

[0036] The industry's water-based firefighting system typically uses a fire hose 20 quick-connect connector at the bottom of the cabinet. In the event of thermal runaway of the energy storage system, someone must be on-site immediately and skilled in operation, and there is a certain risk involved in connecting the fire hose 20. In the embodiment of the present application, the fire alarm signal is transmitted to the energy management system, which accurately locates the specific cabinet where the fire has occurred. If ordinary firefighting agents are ineffective in extinguishing the fire, the energy management system can control the solenoid valve 30 to precisely inject water into the outdoor cabinet, reliably extinguishing the fire. The solenoid valve 30 can also be used in manual mode to respond to failures in the cabinet's fire protection system due to malfunction, thereby reducing the loss of life and property caused by thermal runaway of the entire energy storage system.

[0037] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

[0038] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A liquid-cooled outdoor cabinet energy storage system, characterized in that: include: An outdoor energy storage cabinet, a battery pack, a water pipe, an electromagnetic switch valve, a sensor group, an energy management system and a fire extinguishing device; the battery pack is arranged in the outdoor energy storage cabinet, the water pipe connects the outdoor energy storage cabinet and the electromagnetic switch valve, and the energy management system connects the electromagnetic switch valve, the sensor group and the fire extinguishing device; the energy management system is used to determine whether the sensor signal detected by the sensor group exceeds a set threshold. If it exceeds the set threshold, it will start to control the fire extinguishing device to work and control the electromagnetic switch valve to control the water in the water pipe to flow into the outdoor energy storage cabinet.

2. The liquid-cooled outdoor cabinet energy storage system according to claim 1, characterized in that: The energy storage outdoor cabinet includes a cabinet body and a cabinet door that are connected to each other. The cabinet body includes an upper cabinet body and a lower cabinet body. The lower cabinet body is divided into multiple battery cabinets that accommodate the battery packs.

3. The liquid-cooled outdoor cabinet energy storage system according to claim 2, characterized in that: A water inlet and an air inlet are provided at the bottom of the energy storage outdoor cabinet, and the water pipe passes through the water inlet pipe and is passed from the lower cabinet body to the upper cabinet body.

4. The liquid-cooled outdoor cabinet energy storage system according to claim 2, characterized in that: The fire extinguishing device includes an explosion-proof exhaust fan, which is arranged on the bottom plate of the upper cabinet and is connected to the energy management system.

5. The liquid-cooled outdoor cabinet energy storage system according to claim 1, characterized in that: There are multiple outdoor energy storage cabinets, the water pipes are arranged corresponding to the outdoor energy storage cabinets, and the multiple water pipes are connected in parallel to the electromagnetic switch valve.

6. The liquid-cooled outdoor cabinet energy storage system according to claim 2, characterized in that: The sensor group is arranged on the outside of the energy storage outdoor cabinet.

7. The liquid-cooled outdoor cabinet energy storage system according to claim 2, characterized in that: The sensor group is arranged on the inner side of the cabinet door.

8. The liquid-cooled outdoor cabinet energy storage system according to claim 1, characterized in that: The sensor group includes a combustible gas detector, and the combustible gas detector is connected to the energy management system.

9. The liquid-cooled outdoor cabinet energy storage system according to claim 1, characterized in that: The sensor group includes a temperature sensor, and the temperature sensor is connected to the energy management system.

10. The liquid-cooled outdoor cabinet energy storage system according to claim 1, characterized in that: The sensor group includes a smoke sensor, and the smoke sensor is connected to the energy management system.

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