Energy storage cabinet and energy storage system

Abstract

The utility model discloses an energy storage cabinet and an energy storage system, and belongs to the technical field of energy storage. The energy storage cabinet comprises a cabinet body, an explosion venting structure, a battery cluster unit and a liquid cooling system, a pressure relief opening is formed in the top of the cabinet body, the explosion venting structure is arranged on the pressure relief opening, the battery cluster unit is arranged in the cabinet body, the liquid cooling system is arranged in the cabinet body, and the liquid cooling system is located below the battery cluster unit. When abnormal high pressure or explosion risk occurs in the battery cluster unit, the pressure can be released in time, the explosion venting pressure can be prevented from diffusing to the activity range of surrounding personnel, and the safety is improved. In addition, the liquid cooling system is located below the battery cluster unit, so that the battery cluster unit is located at the relatively upper position in the cabinet body, explosion venting can be carried out through the explosion venting structure above the battery cluster unit in a short time after the battery cluster unit fails, and the safety of the energy storage cabinet is further improved.

Description

Technical Field

[0001] The present application belongs to the field of energy storage technology, and in particular, relates to an energy storage cabinet and an energy storage system. Background Art

[0002] Under the combined influence of policy promotion, market selection and national strategic direction, industrial and commercial energy storage has developed rapidly. At present, due to the large battery capacity and power of energy storage cabinets on the market, the temperature distribution of the batteries inside the energy storage cabinets is uneven, which requires the energy storage cabinets to release the explosion pressure. However, when the energy storage cabinets release the explosion pressure, there is a risk of spreading to the surrounding personnel activities, which poses a safety hazard. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an energy storage cabinet and an energy storage system, which aims to solve the problem in the prior art that when the explosion pressure of the energy storage cabinet is released, the pressure spreads to the surrounding human activity area, posing a safety hazard.

[0004] The present application provides an energy storage cabinet, comprising:

[0005] The cabinet body has a pressure relief port on the top;

[0006] An explosion relief structure is arranged on the pressure relief port;

[0007] A battery cluster unit is disposed in the cabinet;

[0008] A liquid cooling system is arranged in the cabinet;

[0009] Wherein, the liquid cooling system is located below the battery cluster unit.

[0010] According to the energy storage cabinet of the present application, the arrangement of the pressure relief port and the explosion relief structure enables the pressure to be released in time when abnormally high pressure or explosion risk occurs inside the battery cluster unit, effectively preventing the explosion or rupture from causing harm to the external environment and personnel. In addition, the explosion relief pressure can be prevented from spreading to the surrounding area of ​​personnel activities, thereby improving safety, utilizing space, and reducing interference with other equipment. The design of the explosion relief structure can ensure that it automatically opens when the pressure reaches a certain level, quickly releases the internal pressure, and can automatically reset after the pressure is reduced to ensure the sealing of the cabinet. The battery cluster unit is arranged in the cabinet, realizing the integrated design of the energy storage cabinet, which not only saves space, but also improves the stability and reliability of the entire system. The liquid cooling system effectively removes the heat generated by the battery cluster unit from the inside of the cabinet by circulating cooling liquid or heat transfer liquid, ensuring that the battery cluster unit operates within the optimal temperature range. This efficient thermal management can significantly improve the performance and life of the battery cluster unit and ensure the long-term stable operation of the energy storage cabinet. Excessive temperature may damage the battery cluster unit and even cause safety accidents. The liquid cooling system can effectively prevent the battery cluster unit from overheating by precisely controlling the temperature of the battery cluster unit, thereby reducing the risk of fire or explosion of the battery cluster unit and enhancing the safety of the entire energy storage cabinet. The battery cluster unit is placed relatively high inside the cabinet, so that after the battery cluster unit fails, it can be vented through the explosion venting structure above it in a relatively short time, further improving the safety of the energy storage cabinet. In addition, placing the liquid cooling system below the battery cluster unit can make more effective use of the space inside the energy storage cabinet. This layout not only helps to reduce the overall size of the cabinet, but also improves the integration of the energy storage system and reduces the construction and operation and maintenance costs. By placing the liquid cooling system below the battery cluster unit, safety accidents caused by overheating of the battery cluster unit can be more effectively prevented. Once an abnormal situation occurs in the battery cluster unit, the liquid cooling system can respond quickly and prevent the expansion of the accident by lowering the temperature. By rationally arranging the liquid cooling system and the battery cluster unit, the reliability of the entire energy storage system is improved. The effective operation of the liquid cooling system can ensure the stability and safety of the battery cluster unit, while the rapid explosion venting capability of the battery cluster unit further enhances the safety of the system. This design makes the energy storage cabinet more reliable and stable when dealing with various abnormal situations. In addition, the design of the explosion-proof structure also takes into account the convenience of maintenance, making it easy to open it for internal inspection or maintenance when necessary.

[0011] According to an embodiment of the present application, the explosion relief structure includes an explosion relief plate, a flange frame is provided on the periphery of the explosion relief plate, and the flange frame is threadedly connected to the cabinet body through a screw connection.

[0012] According to one embodiment of the present application, it further includes a converter unit and a distribution unit, wherein the converter unit is disposed in the cabinet and below the liquid cooling system, the converter unit is electrically connected to the battery cluster unit, the distribution unit is disposed in the cabinet and below the converter unit or arranged side by side with the converter unit, and the distribution unit is electrically connected to the converter unit; and / or,

[0013] The energy storage cabinet includes a fire protection system, which is installed on the cabinet body and located above the battery cluster unit.

[0014] According to one embodiment of the present application, the liquid cooling system includes a liquid cooling host, and the liquid cooling host is located between the battery cluster unit and the converter unit; and / or,

[0015] The bottom of the cabinet and / or the back plate of the cabinet are provided with openings, and the openings are used for wiring to pass through so as to be electrically connected to the power distribution unit; and / or,

[0016] The fire fighting system comprises a detection device, a water fire fighting component and a gas fire fighting component. The detection device, the water fire fighting component and the gas fire fighting component are all electrically connected to the power distribution unit.

[0017] According to one embodiment of the present application, the battery cluster unit includes at least one battery module, the liquid cooling system further includes at least one liquid cooling plate, the at least one liquid cooling plate corresponds to the at least one battery module, each of the liquid cooling plates is connected to the liquid cooling host via a connecting pipe, and a coolant flows in the liquid cooling plate, and the coolant is used to exchange heat with the corresponding battery module; and / or,

[0018] The detection equipment includes at least one of a combustible gas detector and a smoke and temperature detector.

[0019] According to an embodiment of the present application, the liquid cooling system further includes a water receiving pan, which is disposed above the converter unit and is used to receive the coolant leaked from the at least one liquid cooling plate.

[0020] According to one embodiment of the present application, a liquid outlet is provided at the bottom of the water receiving tray;

[0021] A water storage chamber is also formed in the cabinet, and the water storage chamber is arranged adjacent to the bottom of the cabinet. The water storage chamber is connected with the liquid outlet through a connecting pipeline.

[0022] According to an embodiment of the present application, the cabinet is further provided with a discharge port, and the discharge port is communicated with the water storage chamber;

[0023] The energy storage cabinet further includes a drain sealing plate, which is movably mounted on the cabinet body so that the drain sealing plate has a first position for sealing the drain port and a second position for opening the drain port.

[0024] According to one embodiment of the present application, the cabinet body has a door panel and a back panel that are arranged opposite to each other along the front and back, the door panel is provided with at least one air inlet, and the back panel is provided with at least one air outlet.

[0025] In a second aspect, the present application further provides an energy storage system, the energy storage system comprising at least two energy storage cabinets as described above, and the at least two energy storage cabinets are arranged side by side.

[0026] According to the energy storage system of the present application, the energy storage system includes at least two energy storage cabinets as described above, and at least two of the energy storage cabinets are arranged side by side. In this way, by arranging at least two energy storage cabinets side by side, the capacity of the energy storage system can be easily expanded. This modular design enables the energy storage system to be flexibly configured according to actual needs, which can not only meet small-scale energy storage needs, but also support large-scale energy storage applications. Since the structure and layout of each energy storage cabinet are the same, the management and maintenance work becomes relatively simple and unified. The staff can adopt standardized operation and maintenance procedures to centrally manage multiple energy storage cabinets, thereby improving work efficiency. Each energy storage cabinet is equipped with complete thermal management, fire protection and other safety measures. When multiple energy storage cabinets are arranged side by side, these safety measures can complement each other to form a more powerful safety guarantee system. At the same time, the side-by-side arrangement also helps to detect and handle abnormal situations in a timely manner, further improving the safety of the entire energy storage system. The energy storage cabinets arranged side by side can make full use of the ground space and reduce space waste. This compact layout method enables the energy storage system to adapt to different installation environments and improve space utilization. By adopting a standardized energy storage cabinet design and side-by-side arrangement, the production and installation costs of the energy storage system can be reduced. At the same time, due to the simplification of management and maintenance work, the operating costs can be further reduced, and the economic efficiency of the energy storage system can be improved.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 It is one of the structural schematic diagrams of the energy storage cabinet provided in the embodiment of the present application;

[0030] Figure 2 yes Figure 1 Schematic diagram of the internal layout of the energy storage cabinet;

[0031] Figure 3 yes Figure 1 Schematic diagram of the rear view of the middle energy storage cabinet;

[0032] Figure 4 yes Figure 1 Schematic diagram of the middle energy storage cabinet viewed from above;

[0033] Figure 5 This is a partial structural diagram of a plurality of energy storage cabinets seamlessly connected in parallel provided in an embodiment of the present application;

[0034] Figure 6 It is a structural schematic diagram of the explosion relief structure provided in an embodiment of the present application.

[0035] Reference numerals:

[0036] Energy storage cabinet 100;

[0037] Cabinet 110, door panel 111, air inlet 1111, back panel 112, air outlet 1121, fixed angle piece 113, top cover 114, hanging ring 1141, frame 115, base 116, side panel 117;

[0038] Detection equipment 121, water fire fighting assembly 122, gas fire fighting assembly 123, explosion relief plate 124, liquid cooling plate 125;

[0039] Battery module 131;

[0040] A current conversion unit 140;

[0041] Power distribution unit 150;

[0042] Liquid cooling system 160, liquid cooling main unit 161, liquid cooling main pipeline 162, liquid cooling branch pipeline 163;

[0043] Drain sealing plate 181, lower outlet cover plate 182, rear outlet cover plate 183, rear outlet sealing plate 184, water fire protection sealing plate 186;

[0044] Flange frame a. DETAILED DESCRIPTION

[0045] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0046] The present application discloses an energy storage cabinet 100 .

[0047] Reference below Figures 1 to 6 An energy storage cabinet 100 according to an embodiment of the present application is described.

[0048] like Figures 1 to 5 As shown, the energy storage cabinet 100 includes a cabinet body 110, an explosion relief structure, a battery cluster unit and a liquid cooling system 160. A pressure relief port is provided on the top of the cabinet body 110, the explosion relief structure is provided on the pressure relief port, the battery cluster unit is provided in the cabinet body 110, and the liquid cooling system 160 is provided in the cabinet body 110, and the liquid cooling system 160 is located below the battery cluster unit.

[0049] According to the energy storage cabinet 100 of the present application, the arrangement of the pressure relief port and the explosion relief structure enables the pressure to be released in time when abnormally high pressure or explosion risk occurs inside the battery cluster unit, effectively preventing the explosion or rupture from causing harm to the external environment and personnel. In addition, the explosion relief pressure can be prevented from spreading to the surrounding area where people move, thereby improving safety, utilizing space, and reducing interference with other equipment. The design of the explosion relief structure can ensure that it automatically opens when the pressure reaches a certain level, quickly releases the internal pressure, and can automatically reset after the pressure is reduced, ensuring the sealing of the cabinet 110. The battery cluster unit is arranged in the cabinet 110, realizing the integrated design of the energy storage cabinet 100, which not only saves space, but also improves the stability and reliability of the entire energy storage cabinet 100. The liquid cooling system 160 effectively removes the heat generated by the battery cluster unit from the inside of the cabinet 110 by circulating cooling liquid or heat transfer liquid, ensuring that the battery cluster unit operates within the optimal temperature range. This efficient thermal management can significantly improve the performance and life of the battery cluster unit and ensure the long-term stable operation of the energy storage cabinet 100. Excessive temperature may damage the battery cluster unit and even cause a safety accident. The liquid cooling system 160 can effectively prevent the battery cluster unit from overheating by precisely controlling the temperature of the battery cluster unit, thereby reducing the risk of fire or explosion of the battery cluster unit and enhancing the safety of the entire energy storage cabinet 100. The battery cluster unit is placed relatively high inside the cabinet 110, so that after the battery cluster unit fails, it can be vented through the explosion relief structure above it in a relatively short time, further improving the safety of the energy storage cabinet. In addition, placing the liquid cooling system 160 below the battery cluster unit can more effectively utilize the space inside the energy storage cabinet 100. This layout not only helps to reduce the overall size of the cabinet 110, but also improves the integration of the energy storage system and reduces construction and operation and maintenance costs. By placing the liquid cooling system 160 below the battery cluster unit, safety accidents caused by overheating of the battery cluster unit can be more effectively prevented. Once an abnormal situation occurs in the battery cluster unit, the liquid cooling system 160 can respond quickly and prevent the expansion of the accident by lowering the temperature. By rationally arranging the liquid cooling system 160 and the battery cluster unit, the reliability of the entire energy storage system is improved. The effective operation of the liquid cooling system 160 can ensure the stability and safety of the battery cluster unit, while the rapid explosion relief capability of the battery cluster unit further enhances the safety of the system. This design makes the energy storage cabinet 100 more reliable and stable when dealing with various abnormal situations. In addition, the design of the explosion relief structure also takes into account the convenience of maintenance, so that it is convenient to open it for internal inspection or maintenance when necessary.

[0050] Reference Figure 1, a pressure relief port is provided on the top of the cabinet 110, so that during the operation of the energy storage cabinet 100, a higher internal pressure may be generated due to the operation of the battery cluster unit. When the pressure exceeds the safety threshold, if there is no appropriate release mechanism, the cabinet 110 may rupture or explode, causing serious damage to personnel and equipment. The pressure relief port provided on the top can release excessive pressure in time, effectively preventing the energy storage cabinet 100 from exploding due to excessive internal pressure, thereby ensuring the safety of personnel and equipment. By releasing the internal pressure in time, the pressure relief port can maintain the stability of the internal environment of the energy storage cabinet 100 and avoid affecting the normal operation of the battery cluster unit due to pressure fluctuations. This helps to ensure the stable operation of the energy storage cabinet 100 and improve the reliability and service life of the system. Since the pressure relief port can effectively prevent the energy storage cabinet 100 from being damaged due to excessive internal pressure, the maintenance and replacement costs caused by equipment damage can be reduced.

[0051] The explosion relief structure is arranged on the pressure relief port. The main function of the explosion relief structure is to open quickly and effectively to release the excessive pressure accumulated inside when the internal pressure of the cabinet 110 reaches or exceeds a predetermined value. This design can prevent explosion accidents caused by excessive internal pressure, thereby protecting the safety of personnel and equipment to the greatest extent. The explosion relief structure is usually designed to be more precise and efficient, and can ensure that it is opened at the best time and pressure level. This means that it can more accurately control the amount and speed of pressure release, avoid excessive or insufficient release, and thus maintain the stability of the internal environment of the energy storage cabinet 100. By effectively releasing the internal pressure, the explosion relief structure can reduce the pressure fluctuation and stress concentration inside the energy storage cabinet 100, thereby reducing the risk of damage to the equipment due to long-term high pressure. This helps to improve the durability and service life of the energy storage cabinet 100. The setting of the explosion relief structure makes maintenance and overhaul work more convenient. When the pressure relief port or explosion relief structure needs to be inspected and replaced, the staff can more easily access and operate these components, thereby improving maintenance efficiency and reducing maintenance costs. In addition, under normal working conditions, the explosion relief structure can maintain a sealed state to prevent external dust, moisture or other contaminants from entering the cabinet 110, thereby ensuring the normal operation of the equipment and extending its service life. In addition, the explosion relief structure is placed on the top to prevent the explosion relief pressure from spreading to the surrounding area where people move, thereby improving safety, making use of space, reducing interference with other equipment, and making it easier to take timely measures to protect the safety of batteries and other components.

[0052] The battery cluster unit is arranged in the cabinet body 110 , thus realizing an integrated design of the energy storage cabinet 100 , which not only saves space but also improves the stability and reliability of the entire energy storage cabinet 100 .

[0053] The liquid cooling system 160 is arranged in the cabinet 110. In this way, the liquid cooling system 160 effectively removes the heat generated by the battery cluster unit from the inside of the cabinet 110 by circulating cooling liquid or heat transfer liquid, ensuring that the battery cluster unit operates within the optimal temperature range. This efficient thermal management can significantly improve the performance and life of the battery cluster unit and ensure the long-term stable operation of the energy storage cabinet 100. Excessive temperature may damage the battery cluster unit and even cause a safety accident. The liquid cooling system 160 can effectively prevent the battery cluster unit from overheating by accurately controlling the temperature of the battery cluster unit, thereby reducing the risk of fire or explosion of the battery cluster unit and enhancing the safety of the entire energy storage cabinet 100. Compared with the traditional air cooling method, the liquid cooling system 160 has a higher heat exchange coefficient and efficiency, can reduce the battery temperature more quickly, and reduce the energy consumption required for cooling. In addition, the liquid cooling system 160 can also automatically adjust the flow and temperature according to the temperature and heat inside the cabinet 110 to achieve energy saving and consumption reduction.

[0054] Among them, the liquid cooling system 160 is located below the battery cluster unit, that is, the battery cluster unit is located above the liquid cooling system 160, so that the battery cluster unit is relatively high inside the cabinet 110, so that the battery cluster unit can be vented quickly through the explosion venting structure above it after failure. In addition, placing the liquid cooling system 160 below the battery cluster unit can more effectively utilize the space in the energy storage cabinet 100. This layout not only helps to reduce the overall size of the cabinet 110, but also improves the integration of the energy storage system and reduces the construction and operation and maintenance costs. By placing the liquid cooling system 160 below the battery cluster unit, safety accidents caused by overheating of the battery cluster unit can be more effectively prevented. Once an abnormal situation occurs in the battery cluster unit, the liquid cooling system 160 can respond quickly and prevent the expansion of the accident by lowering the temperature. By reasonably arranging the liquid cooling system 160 and the battery cluster unit, the reliability of the entire energy storage system is improved. The effective operation of the liquid cooling system 160 can ensure the stability and safety of the battery cluster unit, and the rapid explosion venting capability of the battery cluster unit further enhances the safety of the system. This design makes the energy storage cabinet 100 more reliable and stable when dealing with various abnormal situations.

[0055] Reference Figure 6In one embodiment, the explosion relief structure includes an explosion relief plate 124, and a flange frame a is provided on the circumferential side of the explosion relief plate 124. The flange frame a is threadedly connected to the cabinet 110 through a screw connection. In this way, the installation process is relatively simple and fast, which can save installation time and cost. At the same time, since the tightening force of the threaded connection is evenly distributed, the connection is more secure, thereby improving the connection reliability between the explosion relief structure and the cabinet 110. The design of the flange frame a cooperates with the threaded connection to effectively ensure the sealing between the explosion relief structure and the cabinet 110. This structure with good sealing can prevent gas or liquid from leaking from the connection under normal working conditions, ensuring the stable operation of the energy storage cabinet 100. The design of the flange frame a enables the explosion relief structure to have stronger structural stability when it is subjected to internal pressure. When abnormally high pressure occurs inside the energy storage cabinet 100, the explosion relief plate 124 can be opened safely and effectively to release the pressure, and the failure of the connection will not cause the failure of the entire explosion relief structure. The threaded connection method allows the explosion relief structure to be easily disassembled and reinstalled when necessary, which is convenient for replacing or repairing the explosion relief plate 124. This detachability also improves the maintainability of the entire energy storage cabinet 100 and reduces maintenance costs.

[0056] In one embodiment, the energy storage cabinet 100 further includes a converter unit 140 and a power distribution unit 150 .

[0057] The converter unit 140 is arranged in the cabinet 110, below the liquid cooling system 160, and the converter unit 140 is electrically connected to the battery cluster unit. In this way, the converter unit 140 is placed below the liquid cooling system 160, so that the space inside the cabinet 110 can be fully utilized to optimize the spatial layout. This layout method not only reduces unnecessary space waste, but also helps to improve the integration of the entire energy storage cabinet 100, making the cabinet 110 more compact and efficient. Since the converter unit 140 will also generate a certain amount of heat during operation, placing it below the liquid cooling system 160 can use the cooling effect of the liquid cooling system 160 to reduce the temperature of the converter unit 140. The liquid cooling system 160 can effectively absorb and take away the heat generated by the converter unit 140, ensuring that it works within a suitable temperature range, thereby improving its stability and reliability. The converter unit 140 is electrically connected to the battery cluster unit to ensure efficient transmission and conversion of electrical energy. This direct connection method reduces intermediate links and losses and improves energy utilization efficiency. At the same time, it is also convenient to control and manage the charging and discharging of the battery cluster unit to ensure the normal operation of the energy storage cabinet 100.

[0058] It should be noted that the converter 140 generally refers to a power converter, which is used to control the charging and discharging process of the battery. It can convert the direct current of the battery into alternating current, or convert alternating current into direct current, so as to achieve energy storage and release.

[0059] The power distribution unit 150 is arranged in the cabinet 110 and is located below the converter unit 140 or arranged side by side with the converter unit 140. The power distribution unit 150 is electrically connected to the converter unit 140. In this way, the power distribution unit 150 and the converter unit 140 are coexisting in the same cabinet 110, and adopt an up-down or side-by-side layout, which effectively utilizes the space inside the cabinet 110. This compact layout not only reduces the floor space, but also helps to improve the overall integration of the energy storage cabinet 100, making the energy storage cabinet 100 more compact and efficient. The power distribution unit 150 is directly electrically connected to the converter unit 140, reducing the intermediate links and cable length, thereby reducing the loss during the power transmission process. This direct and efficient electrical connection method helps to improve the energy utilization efficiency of the entire energy storage cabinet 100 and ensure the efficient transmission and distribution of electric energy. The power distribution unit 150 and the converter unit 140 are in the same cabinet 110, making maintenance and management work more convenient. When the staff conducts daily inspections, troubleshooting or maintenance, they can complete the inspection and operation of the distribution unit 150 and the converter unit 140 at one time, thereby improving work efficiency. At the same time, this layout method also helps to reduce safety hazards caused by misoperation or negligence. The distribution unit 150 and the converter unit 140 will generate a certain amount of heat during operation. By arranging them together, the heat dissipation channels and heat dissipation facilities inside the cabinet 110 can be used for unified heat dissipation. This layout method helps to improve the heat dissipation performance of the entire energy storage cabinet 100 and ensure that the distribution unit 150 and the converter unit 140 operate stably within a suitable temperature range. By integrating the distribution unit 150 and the converter unit 140 in the same cabinet 110, the costs of additional cabinets 110, support structures, and connecting cables can be reduced. At the same time, this layout method also helps to reduce installation and maintenance costs and improve the overall economic benefits of the energy storage cabinet 100.

[0060] It should be noted that the main function of the power distribution unit 150 is to improve the stability, reliability and safety of the power system through the distribution, control and protection of the power system. It can realize the precise dispatch of electric energy and distribute the electric energy according to the operating status of the load to ensure the safe and stable operation of the system.

[0061] In addition, the power distribution unit 150 also has the functions of monitoring, protecting and repairing the power quality to ensure the quality and reliability of power supply. At the same time, it can also realize real-time monitoring of the power system, and provide accurate power system operation status information to operators through data collection, transmission and analysis, helping operators to make correct operation decisions.

[0062] Since the liquid cooling system 160 can improve the safety and stability of the battery cluster unit, in one embodiment, the liquid cooling system 160 can only cool the battery cluster unit, and in other embodiments, the liquid cooling system 160 can also cool the battery cluster unit, the converter unit 140, and the power distribution unit 150, etc., specifically, this application does not limit this.

[0063] In one embodiment, the liquid cooling system 160 includes a liquid cooling host 161, and the liquid cooling host 161 is located between the battery cluster unit and the converter unit 140. In this way, the liquid cooling system 160 can quickly transfer the heat generated inside the battery cluster unit to the external heat dissipation system through the efficient heat conduction performance of the liquid medium, effectively avoiding the occurrence of battery thermal runaway. This efficient thermal management can ensure that the battery cluster unit operates within an appropriate operating temperature range, thereby improving the performance and life of the battery. Through the cooling effect of the liquid cooling system 160, the heat generated by the battery cluster unit and the converter unit 140 during operation can be effectively reduced, and the damage to the equipment caused by thermal stress can be reduced. This helps to extend the service life of the equipment and reduce maintenance costs. The liquid cooling host 161 is located between the battery cluster unit and the converter unit 140, and can achieve precise temperature control of these two key components. This helps to ensure the stable operation of the entire energy storage cabinet 100 and improve the reliability and safety of the system. The liquid cooling system 160 is integrated in the cabinet 110, optimizing the spatial layout of the entire energy storage cabinet 100. This integrated design makes the energy storage cabinet 100 more compact, reduces the footprint, and improves space utilization.

[0064] It should be noted that the liquid cooling host 161 includes components such as a heater (when necessary) and a coolant pump, which are used to drive the coolant to flow in the system so as to remove heat from the liquid cooling plate 125.

[0065] Reference Figure 2 The battery cluster unit, the liquid cooling host 161, the converter unit 140 and the power distribution unit 150 are arranged in sequence from top to bottom, so that the energy storage cabinet 100 has a compact structure, the volume of the energy storage cabinet 100 can be reduced, and the area occupied by the energy storage cabinet 100 during installation is reduced.

[0066] Reference Figure 2 In one embodiment, the battery cluster unit includes at least one battery module 131 .

[0067] It should be noted that the battery module 131 refers to a unit composed of two or more single cells in a certain electrical connection mode, which is the basic unit of the battery cluster. The single cell, also known as a battery pack, is composed of electrodes and electrolytes, etc., and is the smallest unit constituting the battery module 131. Multiple battery modules 131 can be provided. When multiple battery modules 131 are provided, the multiple battery modules 131 are arranged in sequence in the vertical direction.

[0068] In addition, the battery cluster unit also includes a battery cluster management unit, which is a system for daily management and monitoring of the battery cluster and is responsible for controlling the operation of the battery module 131. It can obtain the voltage, current, temperature and other status information of the battery module 131 through the communication interface with the battery module 131, and perform operations such as charging or discharging the battery module 131 based on this information to ensure the safety and stable operation of the battery.

[0069] Reference Figure 2 The liquid cooling system 160 also includes at least one liquid cooling plate 125, at least one liquid cooling plate 125 corresponds to at least one battery module 131, each liquid cooling plate 125 is connected to the liquid cooling host 161 through a connecting pipe, and a coolant flows in the liquid cooling plate 125, and the coolant is used to exchange heat with the corresponding battery module 131, thereby cooling the corresponding battery module 131 and improving the service life of the battery module 131.

[0070] It should be noted that the first connecting pipeline includes a liquid cooling main pipeline 162 and at least one liquid cooling branch pipeline 163, one end of the liquid cooling main pipeline 162 is connected to the liquid cooling host 161, and one end of at least one liquid cooling branch pipeline 163 is connected to the other end of the liquid cooling main pipeline 162. In this way, by connecting the liquid cooling main pipeline 162 and the liquid cooling branch pipeline 163 together, flexible layout and installation can be achieved in the liquid cooling system 160. Because the connection between the liquid cooling main pipeline 162 and the liquid cooling branch pipeline 163 can be easily adjusted and changed, the layout of the liquid cooling system 160 can be modified and optimized according to actual needs. The other end of at least one liquid cooling branch pipeline 163 is connected to the liquid cooling plate 125. In this way, the cooling liquid of the liquid cooling host 161 can be effectively transported to each liquid cooling plate 125, and cooling liquid is provided to each liquid cooling plate 125 to take away the heat generated by the corresponding battery module 131. When the coolant flows from the main liquid cooling line 162 to the liquid cooling branch line 163, the coolant is distributed to each liquid cooling plate 125, which can cover each liquid cooling plate 125 more widely, so that it can obtain a more uniform cooling effect. By connecting the other end of the liquid cooling branch line 163 to the liquid cooling plate 125, the coolant can directly contact the surface of the battery module 131 that needs to be cooled, so that the heat can be taken away from the surface of the battery module 131 more quickly. This design can also reduce the waste and leakage of cooling liquid in the liquid cooling system 160, and improve the efficiency and stability of the entire liquid cooling system 160.

[0071] In one embodiment, the liquid cooling system 160 further includes a water receiving tray, which is disposed above the converter unit 140 to receive the coolant leaked from at least one liquid cooling plate 125. In this way, short circuits of other devices caused by coolant leakage are avoided, thereby improving the safety of the energy storage cabinet 100.

[0072] Reference Figure 1 , taking the case where multiple liquid cooling plates 125 are provided as an example, multiple liquid cooling plates 125 are arranged at intervals in the vertical direction. In one embodiment, a water receiving pan can be provided, and the water receiving pan is located below the lowest liquid cooling plate 125 arranged in sequence from top to bottom. In this way, the water receiving pan can be used to receive the cooling liquid that may leak from multiple liquid cooling plates 125, thereby reducing the number of water receiving pans and saving costs. In another embodiment, multiple water receiving pans can be provided, and the multiple water receiving pans can be respectively sandwiched between two adjacent liquid cooling plates 125. In this way, the cooling liquid that may leak from the corresponding liquid cooling plates 125 can be received by the multiple water receiving pans, thereby avoiding damage to the battery module 131 caused by the leakage of the cooling liquid, thereby improving the safety performance.

[0073] In one embodiment, a liquid outlet is provided at the bottom of the water receiving tray, and a water storage chamber is further formed in the cabinet body 110. The water storage chamber is provided adjacent to the bottom of the cabinet body 110, and the water storage chamber is connected to the liquid outlet through a second connecting pipe. With such a configuration, the water in the water receiving tray can be discharged to the water storage chamber in time, thereby avoiding excessive coolant in the water receiving tray, which may overflow and cause short circuits in other devices, thereby improving the safety of the energy storage cabinet 100.

[0074] In one embodiment, the cabinet 110 is also provided with a discharge port, which is connected to the water storage chamber. The energy storage cabinet 100 also includes a liquid discharge sealing plate 181, which is movably mounted on the cabinet 110, so that the liquid discharge sealing plate 181 has a first position for sealing the discharge port and a second position for opening the discharge port. When the coolant does not need to be discharged, the liquid discharge sealing plate 181 can be placed in the first position, that is, the liquid discharge sealing plate 181 can seal the discharge port, thereby preventing the coolant inside the water storage chamber from leaking. When there is too much coolant inside the water storage chamber, the liquid discharge sealing plate 181 can be placed in the second position, that is, the discharge port is opened, so that the coolant can be discharged from the water storage chamber through the discharge port, which is convenient for the subsequent collection of the coolant from the water receiving tray.

[0075] In one embodiment, a heat insulating member is provided between the liquid-cooled host 161 and the converter unit 140. The heat insulating member is provided to block heat exchange between the converter unit 140 and the liquid-cooled host 161, thereby avoiding thermal interference between the liquid-cooled host 161 and the converter unit 140 during operation and improving system stability.

[0076] It should be noted that the thermal insulation member includes a sheet metal member, an installation space is provided inside the sheet metal member, and a rock wool interlayer is built into the installation space. Of course, in other embodiments, a thermal insulation pad may also be placed in the installation space, and the material of the thermal insulation pad may include at least one of aerogel thermal insulation material, high temperature resistant fireproof fiber, composite material and high temperature glass fiber cloth, and specifically, this application does not limit this.

[0077] Reference Figure 2 and Figure 4 The energy storage cabinet 100 includes a fire protection system, which is installed in the cabinet 110 and is located above the battery cluster unit. In this way, since the fire protection system is located above the battery cluster unit, when a fire or abnormal situation occurs in the battery cluster unit, the fire protection system can quickly sense and start the fire extinguishing procedure. This ensures that the fire can be controlled in time at the initial stage to prevent the fire from spreading, thereby minimizing the losses caused by the fire. The fire protection system is installed inside the cabinet 110 and can directly extinguish the battery cluster unit. Such a layout allows the fire extinguishing agent or fire extinguishing gas to cover the battery cluster unit more effectively, achieving a fast and uniform fire extinguishing effect. The fire protection system is located above the battery cluster unit, which can not only directly extinguish the battery cluster unit, but also prevent the fire from spreading to other equipment or components to a certain extent, thereby protecting the safety and stable operation of the entire energy storage cabinet 100. As a part of the energy storage cabinet 100, the fire protection system is installed in a position that is convenient for staff to perform daily maintenance and inspection. Staff can regularly check the operating status of the fire protection system to ensure that it is in good working condition so that it can be quickly started and effectively extinguish the fire when needed. By equipping the fire protection system and making reasonable layout, the overall safety of the energy storage cabinet 100 is significantly improved. This helps to reduce the risk of fire, protect the safety of personnel and equipment, and ensure the stable operation of the energy storage system.

[0078] In addition, if a fire occurs in the cabinet 110, the fire fighting system unit will automatically start a fire fighting device, such as an automatic water sprinkler system, a gas fire fighting system, etc., to extinguish the fire as quickly as possible and minimize the damage caused by the fire to personnel and the environment. When a fire occurs, the fire fighting system unit can not only evacuate personnel in time, but also effectively control the fire and prevent the fire from spreading to buildings and other facilities.

[0079] In one embodiment, the fire protection system unit includes a detection device 121, a water fire protection component 122, and a gas fire protection component 123. The detection device 121, the water fire protection component 122, and the gas fire protection component 123 are all electrically connected to the power distribution unit 150. In this way, the efficiency of fire detection and fire extinguishing can be improved. The detection device 121 can monitor abnormal conditions such as temperature and smoke of the energy storage cabinet 100 in real time, and timely discover fire hazards. The water fire protection component 122 and the gas fire protection component 123 can respond quickly and effectively extinguish and suppress the fire. Since these components are electrically connected to the power distribution unit 150, the fire protection system can be quickly started to improve the efficiency of fire detection and fire extinguishing.

[0080] Since the detection equipment, the water fire fighting component and the gas fire fighting component are all electrically connected to the power distribution unit 150, the power supply can be quickly cut off when a fire occurs to prevent the fire from spreading. At the same time, the gas fire fighting component 123 can be quickly started to control the fire by spraying fire extinguishing gas and other methods to ensure the safety of on-site personnel. The fire fighting system unit is electrically connected to the power distribution unit 150, so that the fire fighting system unit can be remotely controlled and monitored. The operator can remotely operate and maintain the fire fighting system through the intelligent control system, which is convenient and fast. The fire fighting system unit is electrically connected to the power distribution unit 150, so that the fire fighting system can be monitored and diagnosed in real time. When the fire fighting system fails, it can be discovered in time and corresponding measures can be taken to repair it, thereby improving the reliability of the entire energy storage cabinet 100. The fire fighting system unit is electrically connected to the power distribution unit 150, so that resource sharing can be achieved and the investment in unnecessary equipment and cables can be reduced. At the same time, the system structure can be simplified and the cost of the entire energy storage cabinet 100 can be reduced.

[0081] It should be noted that there are many types of detection equipment 121. For example, the detection equipment 121 may include a temperature-sensing fire detector, a smoke-sensing fire detector, a composite smoke-sensing temperature-sensing detector, an ultraviolet flame fire detector, a combustible gas fire detector, and an infrared fire detector. These detectors can detect fires by sensing early fire characteristics such as smoke, temperature, ultraviolet light, and infrared light in the air. Specifically, in the embodiments of the present application, the detection equipment 121 includes at least one of a combustible gas detector and a smoke and temperature detector for illustration. Of course, in other embodiments, the specific selection of the detection equipment 121 can be selected as needed, and the present application does not limit this.

[0082] The firefighting methods of the water firefighting component 122 include but are not limited to water immersion, water spraying, etc. After the detection device 121 feedbacks a signal, water is actively discharged to immerse the cabinet 110 or water is sprayed through a sprinkler head to extinguish the fire. The firefighting methods of the gas firefighting component 123 include but are not limited to perfluorohexanone firefighting and aerosol firefighting, etc. After the detection device 121 feedbacks a signal, the firefighting gas is actively released, or after a fire occurs in the cabinet 110, the flame temperature reaches the release temperature threshold, and the gas cylinder passively releases gas to extinguish the fire.

[0083] In addition, the present application does not limit the specific positions of the detection equipment 121, the water fire fighting component 122 and the gas fire fighting component 123. The specific positions of the detection equipment 121, the water fire fighting component 122 and the gas fire fighting component 123 can be adjusted according to the actual situation in the cabinet 110, including but not limited to the top of the cabinet, the middle of the cabinet, the bottom of the cabinet, the cabinet door panel 111 and other positions.

[0084] The bottom of the cabinet 110 and / or the back plate 112 of the cabinet 110 are provided with openings, and the openings are used for the lines to be passed through to be electrically connected to the power distribution unit 150. In this way, this design avoids the complicated and cumbersome arrangement of the lines outside the cabinet 110, making the line arrangement more concise and orderly, and reducing the risk of damage to the lines outside. The lines are directly introduced into the cabinet 110 through the openings for connection, making full use of the internal space of the cabinet 110 and improving the space utilization rate. This helps to reduce the footprint of the entire energy storage cabinet 100, so that it can achieve a higher degree of integration in a limited space. The lines enter the cabinet 110 through the openings, which can reduce the part of the lines exposed to the outside and reduce the risk of line failure caused by external environmental factors (such as moisture, dust, small animals, etc.). At the same time, the design of the cabinet 110 can also play a certain protective role on the lines and enhance the safety of the entire energy storage cabinet 100. When it is necessary to maintain or overhaul the lines or the power distribution unit 150, it is convenient to enter the cabinet 110 through the openings for operation. This design reduces maintenance difficulty, improves work efficiency, and also reduces maintenance costs.

[0085] Reference Figure 3 and Figure 4 , multiple openings are provided, including a first opening and a second opening provided at the bottom of the cabinet 110, and a third opening provided at the side, the energy storage cabinet 100 also includes a lower outlet cover plate 182 corresponding to the first opening, a rear outlet cover plate 183 corresponding to the second opening, and a rear outlet sealing plate 184 corresponding to the third opening, the lower outlet cover plate 182 can realize the vertical downward outlet of the distribution unit 150, and the rear outlet cover plate 183 can be used in conjunction with the rear outlet sealing plate 184 to realize the horizontal backward outlet of the distribution unit 150. Such a setting is convenient for the arrangement of the lines, and the structure is simple and easy to process.

[0086] In one embodiment, the base is provided with a forklift slot, and the energy storage cabinet 100 further includes a forklift slot sealing plate, which can be movably installed on the base so that the forklift slot sealing plate has an open position for opening the forklift slot and a closed position for covering the forklift slot. When the energy storage cabinet 100 needs to be moved, the forklift slot sealing plate can be moved to the open position to facilitate forklift transfer and transportation.

[0087] In addition, refer to Figure 3 In one embodiment, a water fire-fighting interface is also provided on the cabinet 110, and the energy storage cabinet 100 also includes a water fire-fighting sealing plate 186. The water fire-fighting sealing plate 186 can cover the water fire-fighting structure, thereby improving the aesthetics of the cabinet 110. When an external water source is required, the water fire-fighting sealing plate 186 can be moved to allow the water fire-fighting interface to leak out, so that the water fire-fighting interface can be connected to an external water source for use in conjunction with a water fire-fighting system.

[0088] Reference Figure 1A fixed angle piece 113 is also provided at the bottom of the cabinet 110, and the cabinet 110 can be fixed to a specific position through the fixed angle piece 113 to prevent the energy storage cabinet 100 from accidentally tipping over and causing a safety accident.

[0089] In one embodiment, the cabinet 110 includes a top cover 114, a frame 115, a base 116 and a side plate 117. The top cover 114 is provided with a lifting ring 1141, and the energy storage cabinet 100 can be lifted by applying force to the lifting ring 1141. In addition, the water storage chamber, the lower outlet cover plate 182, and the rear outlet cover plate 183 are all provided on the frame 115, so that the structure is simple and easy to assemble.

[0090] Reference Figures 1 to 3 In one embodiment, the cabinet body 110 has a door panel 111 and a back panel 112 that are arranged opposite to each other along the front and back. The door panel 111 is provided with at least one air inlet 1111, and the back panel 112 is provided with at least one air outlet 1121. In this way, the liquid cooling system 160 and the converter unit 140 can share the air inlet 1111 and the air outlet 1121. At the same time, the front air inlet and rear air outlet design of the energy storage cabinet 100 can achieve "seamless shoulder to shoulder" when multiple cabinets are connected in parallel. In addition, arranging the air inlet 1111 at the front can facilitate the installation and commissioning of the equipment, and at the same time facilitate the maintenance and replacement of components inside the equipment. In addition, it can facilitate the installation and maintenance of the equipment, improve the reliability and stability of the equipment, reduce the noise and vibration of the equipment, improve the heat dissipation performance of the equipment, facilitate the movement and handling of the equipment, etc., which can improve the service life and performance of the energy storage cabinet 100, and at the same time reduce failures and maintenance costs.

[0091] In the second aspect, the present application also provides an energy storage system, the energy storage system includes at least two energy storage cabinets 100 as described above, at least two of the energy storage cabinets 100 are arranged side by side, so that by arranging at least two energy storage cabinets 100 side by side, the capacity of the energy storage system can be easily expanded. This modular design enables the energy storage system to be flexibly configured according to actual needs, which can not only meet small-scale energy storage needs, but also support large-scale energy storage applications. Since the structure and layout of each energy storage cabinet 100 are the same, the management and maintenance work becomes relatively simple and unified. The staff can adopt standardized operation and maintenance procedures to centrally manage multiple energy storage cabinets 100, thereby improving work efficiency. Each energy storage cabinet 100 is equipped with complete thermal management, fire protection and other safety measures. When multiple energy storage cabinets 100 are arranged side by side, these safety measures can complement each other to form a more powerful safety guarantee system. At the same time, the side-by-side arrangement also helps to promptly discover and handle abnormal situations, further improving the safety of the entire energy storage system. The energy storage cabinets 100 arranged side by side can make full use of the ground space and reduce space waste. This compact layout enables the energy storage system to adapt to different installation environments and improves space utilization. By adopting a standardized energy storage cabinet 100 design and side-by-side arrangement, the production cost and installation cost of the energy storage system can be reduced. At the same time, due to the simplification of management and maintenance work, the operating cost can be further reduced, thereby improving the economic efficiency of the energy storage system.

[0092] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0093] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0094] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0095] In the description of the present application, “plurality” means two or more.

[0096] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0097] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0099] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An energy storage cabinet, characterized in that: include: The cabinet body has a pressure relief port on the top; An explosion relief structure is arranged on the pressure relief port; A battery cluster unit is disposed in the cabinet; A liquid cooling system is arranged in the cabinet; Wherein, the liquid cooling system is located below the battery cluster unit.

2. The energy storage cabinet according to claim 1, characterized in that: The explosion relief structure comprises an explosion relief plate, a flange frame is arranged on the periphery of the explosion relief plate, and the flange frame is threadedly connected to the cabinet body through a screw connection.

3. The energy storage cabinet according to claim 1, characterized in that: It also includes a converter unit and a distribution unit, wherein the converter unit is arranged in the cabinet and below the liquid cooling system, the converter unit is electrically connected to the battery cluster unit, the distribution unit is arranged in the cabinet and below the converter unit or arranged side by side with the converter unit, and the distribution unit is electrically connected to the converter unit; and / or, The energy storage cabinet includes a fire protection system, which is installed on the cabinet body and located above the battery cluster unit.

4. The energy storage cabinet according to claim 3, characterized in that: The liquid cooling system comprises a liquid cooling host, and the liquid cooling host is located between the battery cluster unit and the converter unit; and / or, The bottom of the cabinet and / or the back plate of the cabinet are provided with openings, and the openings are used for wiring to pass through so as to be electrically connected to the power distribution unit; and / or, The fire fighting system comprises a detection device, a water fire fighting component and a gas fire fighting component. The detection device, the water fire fighting component and the gas fire fighting component are all electrically connected to the power distribution unit.

5. The energy storage cabinet according to claim 4, characterized in that: The battery cluster unit includes at least one battery module, the liquid cooling system further includes at least one liquid cooling plate, the at least one liquid cooling plate corresponds to the at least one battery module, each of the liquid cooling plates is connected to the liquid cooling host via a connecting pipeline, and a coolant flows in the liquid cooling plate, and the coolant is used to exchange heat with the corresponding battery module; and / or, The detection equipment includes at least one of a combustible gas detector and a smoke and temperature detector.

6. The energy storage cabinet according to claim 5, characterized in that: The liquid cooling system further comprises a water receiving pan, which is arranged above the converter unit and is used to receive the cooling liquid leaked from the at least one liquid cooling plate.

7. The energy storage cabinet according to claim 6, characterized in that: The bottom of the water receiving tray is provided with a liquid outlet; A water storage chamber is also formed in the cabinet, and the water storage chamber is arranged adjacent to the bottom of the cabinet. The water storage chamber is connected with the liquid outlet through a connecting pipeline.

8. The energy storage cabinet according to claim 7, characterized in that: The cabinet is also provided with a discharge port, which is communicated with the water storage cavity; The energy storage cabinet further includes a drain sealing plate, which is movably mounted on the cabinet body so that the drain sealing plate has a first position for sealing the drain port and a second position for opening the drain port.

9. The energy storage cabinet according to any one of claims 1 to 8, characterized in that: The cabinet body comprises a door panel and a back panel which are arranged opposite to each other along the front and back. The door panel is provided with at least one air inlet, and the back panel is provided with at least one air outlet.

10. An energy storage system, characterized in that: The invention comprises at least two energy storage cabinets according to any one of claims 1 to 9, wherein at least two of the energy storage cabinets are arranged side by side.

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