Multifunctional liquid cooling energy storage cabinet

Abstract

The utility model relates to a multifunctional liquid cooling energy storage cabinet used in the industrial and commercial field of energy storage. The utility model aims to provide the multifunctional liquid cooling energy storage cabinet which is convenient to install, beautiful, safe, long in service life and intelligent. The utility model relates to a multifunctional liquid cooling energy storage cabinet body, which comprises a liquid cooling part and a plurality of liquid cooling battery packs, the cabinet body comprises an energy storage cabin and an electrical cabin; the liquid-cooled battery pack is arranged in the energy storage cabin, a high-voltage box electrically connected with the liquid-cooled battery pack for voltage stabilization and current control is further arranged in the energy storage cabin, a three-phase interface and a two-phase interface are formed in the outer surface of the cabinet body, a converter electrically connected with the three-phase interface is arranged in the electrical cabin, and the converter is electrically connected with the high-voltage box; the liquid cooling part comprises a liquid cooling unit and a liquid cooling pipe in sealed connection with the liquid cooling unit, the liquid cooling unit is arranged in the electrical cabin and electrically connected with the two-phase interface, and the liquid cooling pipe is in sealed connection with the plurality of liquid cooling battery packs.

Description

Technical Field

[0001] This utility model relates to an energy storage cabinet, and more particularly to a multifunctional liquid-cooled energy storage cabinet for industrial and commercial energy storage applications. Background Technology

[0002] With the accelerated construction of my country's new energy system, the proportion of renewable energy in the energy system is gradually increasing, which puts forward higher requirements for energy storage construction, and the new energy storage industry has entered a period of rapid development.

[0003] In the field of renewable energy, such as wind power and photovoltaic power generation, the latter is unstable and highly volatile, requiring the coordinated operation of energy storage systems to ensure the safe and stable operation of the power system. Energy storage cabinets are a type of energy storage device that can store electrical energy and release it when needed.

[0004] In the industrial and commercial energy storage sector, 1000V voltage platforms have different battery capacity installation requirements, such as 100kW / 215kWh, 115kW / 233kWh, and 125kW / 261kWh for industrial plants and commercial sites.

[0005] In any field, most energy storage cabinets on the market currently rely on air cooling for heat dissipation. Each end of the cabinet is equipped with a fan that blows air inward and an exhaust fan that blows air outward. This not only results in significant noise during operation but is also greatly affected by ambient temperature. In particular, air cooling is ineffective in high-temperature environments. Since the energy storage cabinet contains a large-capacity battery pack and a corresponding control system, the batteries generate a large amount of heat when storing and releasing energy. High temperatures accelerate battery aging, shorten battery life, and may even lead to safety accidents such as explosions and fires.

[0006] Some systems use liquid cooling units to cool the battery packs, but due to information lag and low intelligence, the cooling effect is not ideal, easily leading to safety accidents. Furthermore, the inability to intervene and alert in time after an accident results in further losses. Conventional energy storage cabinets can only use one type of battery pack, and their simple enclosures and loose connections make them difficult to move and install. Therefore, there is an urgent need for a multi-functional and highly intelligent energy storage cabinet. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a multi-functional liquid-cooled energy storage cabinet that is easy to install, aesthetically pleasing, safe, has a long service life, and is intelligent.

[0008] This utility model discloses a multifunctional liquid-cooled energy storage cabinet, comprising a cabinet body, a liquid cooling section, and multiple liquid-cooled battery packs. The cabinet body includes an energy storage compartment and an electrical compartment. The liquid-cooled battery packs are disposed in the energy storage compartment, which also contains a high-voltage box electrically connected to the liquid-cooled battery packs for voltage stabilization and current control. The cabinet body has a three-phase interface and a two-phase interface on its exterior. The electrical compartment contains a converter electrically connected to the three-phase interface and the converter is electrically connected to the high-voltage box. The liquid cooling section includes a liquid cooling unit and liquid cooling pipes sealed to it. The liquid cooling unit is disposed in the electrical compartment and electrically connected to the two-phase interface. The liquid cooling pipes are respectively sealed to the multiple liquid-cooled battery packs.

[0009] This utility model discloses a multifunctional liquid-cooled energy storage cabinet, wherein the liquid-cooling pipe includes an inlet pipe and a return pipe. The inlet pipe is provided with a first pipe that is sealed and connected to each liquid-cooled battery pack, and the return pipe is provided with a second pipe that is sealed and connected to each liquid-cooled battery pack.

[0010] This utility model discloses a multifunctional liquid-cooled energy storage cabinet, wherein the electrical compartment is further provided with a three-phase junction box and an AC circuit breaker connected between the three-phase interface and the converter circuit. During charging, the current flows from the three-phase interface into the three-phase junction box, the AC circuit breaker and the converter in sequence.

[0011] This utility model discloses a multifunctional liquid-cooled energy storage cabinet, wherein the electrical compartment is also equipped with a meter and a current transformer electrically connected to it, and the current transformer is connected to the circuit between the three-phase interface and the AC circuit breaker.

[0012] This utility model discloses a multifunctional liquid-cooled energy storage cabinet, wherein the energy storage compartment is further provided with a power distribution box, the power distribution box is connected to the circuit between the liquid-cooled battery pack and the high-voltage box, and the power distribution box is provided with a circuit breaker for protecting the circuit.

[0013] This utility model discloses a multifunctional liquid-cooled energy storage cabinet, which also includes a fire protection section. The cabinet body has two doors facing each other. The fire protection section includes a fire-fighting gas cylinder, a detector, a fire control box, and a fire-fighting audible and visual alarm. The fire-fighting gas cylinder, detector, and fire-fighting audible and visual alarm are all electrically connected to the fire control box. The fire control box is electrically connected to a two-phase interface. The fire-fighting gas cylinder is located inside the energy storage compartment. The fire control box and the fire-fighting audible and visual alarm are both located on the cabinet doors.

[0014] This utility model discloses a multifunctional liquid-cooled energy storage cabinet, wherein the inner wall of the cabinet door is provided with a dehumidifier for dehumidifying the energy storage compartment, and the dehumidifier is electrically connected to a two-phase interface.

[0015] This utility model discloses a multifunctional liquid-cooled energy storage cabinet, wherein the cabinet door is equipped with louvers for ventilation and heat dissipation.

[0016] This utility model discloses a multifunctional liquid-cooled energy storage cabinet, which also includes an information management box electrically connected to the two-phase interface. The information management box is installed on the cabinet door and establishes information interaction with the dehumidifier, liquid cooling unit, converter and fire protection unit.

[0017] This utility model discloses a multifunctional liquid-cooled energy storage cabinet, wherein the top of the cabinet is provided with multiple lifting lugs for lifting, and the bottom of the cabinet is provided with a base for handling.

[0018] The difference between this utility model and the existing technology is that this multifunctional liquid-cooled energy storage cabinet can be used for both industrial and commercial purposes. It is equipped with two circuit channels: one channel uses a 380V three-phase interface to charge and discharge the multifunctional liquid-cooled energy storage cabinet, and the other channel uses a 220V two-phase interface to provide stable power to the information management box, liquid cooling unit, and fire protection unit. Moreover, the information management box can monitor the liquid-cooled battery pack, liquid cooling unit, dehumidifier, and fire protection unit in the energy storage cabinet in real time. If an abnormal state occurs, it can automatically terminate operation or eliminate danger, ensuring the safe and stable operation of the multifunctional liquid-cooled energy storage cabinet.

[0019] This utility model provides a multifunctional liquid-cooled energy storage cabinet that includes at least the following beneficial effects:

[0020] (1) Dual-circuit design, namely a three-phase interface for charging and discharging and a two-phase interface for internal power supply. This design does not power itself through the internal liquid-cooled battery pack, thus simplifying the circuit system. By omitting transformer and current-stabilizing components and connecting wires, the number of nodes in the circuit that may fail is reduced, thus lowering the failure rate. On the other hand, the reduction in the number of components helps to reduce the size of the multi-functional liquid-cooled energy storage cabinet and also reduces production costs.

[0021] (2) The installation of lifting lugs and base supports greatly enhances the flexibility of installation and handling of the multi-functional liquid-cooled energy storage cabinet. It can be transported by forklift (forklift chute) or lifted from the top.

[0022] (3) The three-phase junction box makes the connection between the multi-functional liquid-cooled energy storage cabinet and the external wiring more convenient and safe.

[0023] (4) The multi-functional liquid-cooled energy storage cabinet has two opposite cabinet doors. The dehumidifier, information management box, fire alarm, louvers and other components are arranged in an orderly manner on the cabinet doors. The orderly distribution of each component makes the multi-functional liquid-cooled energy storage cabinet more beautiful.

[0024] (5) The energy storage compartment can accommodate the installation of liquid-cooled battery packs of different cell types, such as 1P48S and 1P52S battery packs, so that the multi-functional liquid-cooled energy storage cabinet can meet different energy storage needs by combining and installing different types of liquid-cooled battery packs.

[0025] (6) The multi-functional liquid-cooled energy storage cabinet monitors the dehumidifier, liquid cooling unit, converter and fire protection unit in real time through the information management box. In case of fire or other safety accidents, the information management box can automatically control other components to eliminate the danger. Moreover, any information can be transmitted to the mobile APP through the system for remote control.

[0026] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of a multifunctional liquid-cooled energy storage cabinet according to the present invention. Figure 1 ;

[0028] Figure 2 This utility model Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 3 This is a three-dimensional structural diagram of a multifunctional liquid-cooled energy storage cabinet according to the present invention. Figure 2 ;

[0030] Figure 4 This is a bottom view of a multifunctional liquid-cooled energy storage cabinet according to this utility model;

[0031] Figure 5 This is a three-dimensional structural diagram of the fire-fighting gas cylinder in this utility model.

[0032] Figure label:

[0033] 01-Cabinet; 11-Energy Storage Compartment; 111-High Voltage Box; 112-Distribution Box; 113-Cabinet Door; 1131-Terminal Box; 1132-Water Fire Fighting Interface; 114-Dehumidifier; 115-Louvre; 116-Floor Drain; 117-Indicator Light; 118-Base Support; 119-Lifting Lug; 12-Electrical Compartment; 121-Converter; 122-Three-Phase Junction Box; 123-AC Circuit Breaker; 124-Meter; 125-Current transformer; 126-AC surge protection device; 13-Three-phase interface; 14-Two-phase interface; 02-Liquid cooling section; 21-Liquid cooling unit; 22-Liquid cooling pipe; 221-Liquid inlet pipe; 222-Liquid return pipe; 223-First pipeline; 224-Second pipeline; 03-Liquid-cooled battery pack; 04-Fire protection section; 41-Fire gas cylinder; 42-Fire control box; 43-Fire audible and visual alarm; 05-Information management box. Detailed Implementation

[0034] like Figure 1 , 2As shown, this utility model discloses a multifunctional liquid-cooled energy storage cabinet, including a cabinet body 01, a liquid cooling section 02, and multiple liquid-cooled battery packs 03. The cabinet body 01 includes an energy storage compartment 11 and an electrical compartment 12. The liquid-cooled battery packs 03 are disposed in the energy storage compartment 11. The energy storage compartment 11 also contains a high-voltage box 111 that is electrically connected to the liquid-cooled battery packs 03 for voltage stabilization and current control. The cabinet body 01 has a three-phase interface 13 and a two-phase interface 14 on its exterior. The electrical compartment 12 contains a converter 121 that is electrically connected to the three-phase interface 13. The converter 121 is electrically connected to the high-voltage box 111. The liquid cooling section 02 includes a liquid cooling unit 21 and a liquid cooling pipe 22 that is sealed to it. The liquid cooling unit 21 is disposed in the electrical compartment 12 and is electrically connected to the two-phase interface 14. The liquid cooling pipe 22 is sealed to the multiple liquid-cooled battery packs 03 respectively.

[0035] The cabinet 01 of the multi-functional liquid-cooled energy storage cabinet is rectangular, specifically a vertical rectangular prism, which occupies less space and is easier to place compared to a horizontal cabinet. The upper part of the cabinet 01 is the energy storage compartment 11, and the lower part is the electrical compartment 12. The inner wall of the energy storage compartment 11 is equipped with guide rails or sliding rails for placing liquid-cooled battery packs 03, dividing the energy storage compartment 11 into multiple battery compartments. The high-voltage box 111 is placed at the bottom of the energy storage compartment 11, and the liquid-cooled battery packs 03 are placed sequentially on the guide rails from bottom to top. Multiple liquid-cooled battery packs 03 are connected in series and electrically connected to the high-voltage box 111. The high-voltage box 111 stabilizes and controls the voltage of the liquid-cooled battery packs 03, preventing overvoltage. In case of accidents such as overcharging, undercharging, voltage instability, and overheating, as well as safety accidents caused by these accidents (such as fires and explosions), the high-voltage box 111 is electrically connected to the converter 121 in the electrical compartment 12. The converter 121 is electrically connected to the three-phase interface 13 at the bottom of the cabinet 01, thus forming a bidirectional reversible charging and discharging circuit. During charging, the external three-phase interface 13 provides 380V AC power to the multi-functional liquid-cooled energy storage cabinet. The AC power is then converted to DC power by the converter 121 and flows into the high-voltage box 111. Finally, after being regulated and controlled by the high-voltage box 111, the DC power flows into the liquid-cooled battery pack 03 to charge it. Similarly, during discharging, the DC power is regulated and controlled by the high-voltage box 111 and then sent to the converter 121. The converter 121 converts the DC power to AC power and finally outputs it to the outside from the three-phase interface 13.

[0036] In addition to the three-phase interface 13, a two-phase interface 14, i.e., a 220V interface, is also provided at the bottom of the cabinet 01. This interface supplies power to the liquid-cooled unit 21 in the electrical compartment 12. The liquid-cooled pipe 22 includes an inlet pipe 221 and a return pipe 222, and extends from the electrical compartment 12 to the energy storage compartment 11 from bottom to top. It is fixed on the inner walls of the left and right sides of the energy storage compartment 11, and is sealed to each liquid-cooled battery pack 03. The left or right side of the energy storage compartment 11 can be either the inlet pipe 221 or the return pipe 222. During cooling, the coolant is cooled by the liquid cooler unit 21 and then flows into the liquid-cooled battery pack 03 through the inlet pipe 221. After absorbing the heat of the battery pack, the coolant flows back to the liquid cooler unit 21 through the return pipe 222. It is cooled again in the liquid cooler unit 21, thus forming a liquid cooling cycle. This ensures that the liquid-cooled battery pack will not overheat or cause accidents such as fires due to overheating, thereby ensuring the stable operation of the multi-functional liquid-cooled energy storage cabinet.

[0037] The dual-circuit design, consisting of a three-phase interface 13 for charging and discharging and a two-phase interface 14 for internal power supply, simplifies the circuit system by eliminating the need for internal liquid-cooled battery packs to power itself. By omitting transformer and current-regulating components and connecting wires, the design reduces potential fault points in the circuit, lowering the failure rate. Furthermore, the reduced number of components allows for a smaller overall size of the multi-functional liquid-cooled energy storage cabinet 01, thus lowering production costs.

[0038] This multi-functional liquid-cooled energy storage cabinet can meet the installation requirements of different battery capacities on a 1000V voltage platform in the industrial and commercial energy storage sector, such as 100kW / 215kWh, 115kW / 233kWh, and 125kW / 261kWh, depending on the power requirements. The liquid cooling unit 21 can be configured to meet different cooling power gradients from 3 to 6kW, and the converter 121 can be configured to meet different power requirements from 100 to 125kW. Furthermore, the energy storage compartment 11 can accommodate the installation of liquid-cooled battery packs 03 with different cell models, such as 1P48S and 1P52S battery packs, allowing the multi-functional liquid-cooled energy storage cabinet to meet different energy storage needs by combining and installing different types of liquid-cooled battery packs 03.

[0039] like Figure 1 , 2 As shown in Figure 3, the liquid cooling pipe 22 includes an inlet pipe 221 and a return pipe 222. The inlet pipe 221 is provided with a first pipe 223 that is sealed and connected to each liquid-cooled battery pack 03, and the return pipe 222 is provided with a second pipe 224 that is sealed and connected to each liquid-cooled battery pack 03.

[0040] Both the inlet pipe 221 and the return pipe 222 are main pipes. Each first pipe 223 on the inlet pipe 221 is sealed to the inlet of a liquid-cooled battery pack 03, and each second pipe 224 on the return pipe 222 is sealed to the outlet of a liquid-cooled battery pack 03. After the coolant from the liquid-cooled unit 21 flows into the inlet pipe 221, it flows through the first pipe 223 into the liquid-cooled battery pack 03 to cool it down. Then it flows out from the outlet of the liquid-cooled battery pack 03 into the second pipe 224, then into the return pipe 222, and finally back into the liquid-cooled unit 21 to complete the cooling cycle. This ensures that each liquid-cooled battery pack 03 can be effectively cooled, preventing high temperatures or fires caused by high temperatures, thereby extending its service life and ensuring the stable operation of the multi-functional liquid-cooled energy storage cabinet.

[0041] like Figure 1 , 2 As shown, the electrical compartment 12 is also equipped with a three-phase junction box 122 and an AC circuit breaker 123 connected between the three-phase interface 13 and the converter 121 circuit. During charging, the current flows from the three-phase interface 13 into the three-phase junction box 122, the AC circuit breaker 123 and the converter 121 in sequence.

[0042] The three-phase junction box 122 and the AC circuit breaker 123 are installed on the left side of the electrical compartment 12. The three-phase junction box 122 and the AC circuit breaker 123 are connected to the circuit between the three-phase interface 13 and the converter 121. The three-phase junction box 122 serves as a connection hub. On the other hand, when the multi-functional liquid-cooled energy storage cabinet discharges, the three-phase power output from the converter 121 can be distributed to multiple branches to power different load devices. Moreover, the AC circuit breaker 123 protects the circuit and ensures the stability and safety of the circuit when the multi-functional liquid-cooled energy storage cabinet is charging and discharging.

[0043] like Figure 1 , 2 As shown in Figure 3, the electrical compartment 12 is also equipped with a meter 124 and a current transformer 125 electrically connected to it. The current transformer 125 is connected to the circuit between the three-phase interface 13 and the AC circuit breaker 123.

[0044] Meter 124 is located inside electrical compartment 12, adjacent to three-phase junction box 122. Current transformer 125 is positioned below and behind meter 124, connected between three-phase interface 13 and AC circuit breaker 123. The current transformer 125 converts the large current in the three-phase circuit into a smaller current, which is then fed into meter 124. Meter 124 monitors various conditions in the three-phase circuit. When testing or maintenance is required, workers can operate at the low-voltage, low-current end, avoiding both the risk of electric shock and damage to meter 124 from high voltage. Electrical compartment 12 also includes an AC surge protector 126, installed below meter 124 and connected to the AC line, to prevent damage to the multi-functional energy storage cabinet from lightning strikes.

[0045] like Figure 1 As shown, the energy storage compartment 11 is also equipped with a power distribution box 112, which is connected to the circuit between the liquid-cooled battery pack 03 and the high-voltage box 111. The power distribution box 112 is equipped with a circuit breaker for circuit protection.

[0046] The distribution box 112 is located on the right side of the high-voltage box 111. Multiple circuit breakers can be installed on the distribution box 112 according to specific needs. For example, a separate circuit breaker can be installed for each liquid-cooled battery pack 03 or a group of battery packs. In this way, when a fault occurs or a specific battery pack needs maintenance, its circuit can be cut off individually without affecting the normal operation of other battery packs. The distribution box 112 controls the on / off of the circuit of the liquid-cooled battery pack 03 in the energy storage compartment 11, ensuring the normal operation and safety of the multi-functional liquid-cooled energy storage cabinet.

[0047] like Figure 1 , 3 As shown in Figure 5, the multi-functional liquid-cooled energy storage cabinet also includes a fire protection unit 04. The cabinet body 01 has two cabinet doors 113 facing each other. The fire protection unit 04 includes a fire-fighting gas cylinder 41, a detector, a fire control box 42, and a fire-fighting audible and visual alarm 43. The fire-fighting gas cylinder 41, the detector, and the fire-fighting audible and visual alarm 43 are all electrically connected to the fire control box 42. The fire control box 42 is electrically connected to a two-phase interface 14. The fire-fighting gas cylinder 41 is installed inside the energy storage compartment 11. The fire control box 42 and the fire-fighting audible and visual alarm 43 are both installed on the cabinet doors 113.

[0048] Cabinet 01 has a cabinet door 113 installed on both the front and back sides, which will be installed later. Figure 1The front cabinet door 113 is called the front cabinet door 113, and the rear cabinet door 113 is called the rear cabinet door 113. These doors serve two purposes: protecting the equipment inside cabinet 01 and allowing for the installation of various electronic components, which is both aesthetically pleasing and space-saving. The fire protection system 04 combines cabinet 01 fire protection with PACK-level fire protection. Fire gas cylinder 41 is installed behind the distribution box 112 in the energy storage compartment 11. The fire gas cylinder 41 uses perfluorohexanone gas. The energy storage compartment 11 is equipped with a five-in-one (CO, H2, heat, smoke, VOC) detector that interacts with the fire control box 42. The fire control box 42 and the fire alarm 43 are both installed on the front cabinet door 113. If the five-in-one detector detects a specific fire signal and transmits it to the fire control box 42, and the preset danger threshold is met, the fire control box 42 will trigger the fire gas cylinder 41 to release perfluorohexanone gas to suppress the fire. If the five-in-one detector detects abnormal conditions such as an abnormally high temperature or excessive smoke concentration inside cabinet 01, the fire control box 42 will immediately issue a warning signal, and the fire alarm 43 will start flashing and sounding an alarm to notify relevant personnel to take emergency measures. A terminal box 1131, which is electrically connected to the two-phase interface 14, is also installed on the front cabinet door 113. The terminal box 1131 has multiple plug-in ports to facilitate electrical connections with other equipment. The power required by the fire control box 42 is supplied through the terminal box 1131.

[0049] A water fire extinguishing interface 1132 is installed on the rear cabinet door 113. The water nozzle is plugged into the water fire extinguishing interface 1132. When a fire is detected (such as when the signal detected by the five-in-one detector reaches the corresponding threshold and triggers the cabinet 01 fire extinguishing system), the fire extinguishing device will be automatically triggered. After the water fire extinguishing system is triggered, the system first cuts off the charging and discharging circuit of the multi-functional liquid-cooled energy storage cabinet, and then uses the water nozzle to quickly cool down and extinguish the fire in the energy storage cabinet, so as to achieve full coverage of the entire cabinet 01 and avoid greater damage caused by water and electricity contact, thereby enhancing the safety of the multi-functional liquid-cooled energy storage cabinet.

[0050] The cabinet 01 fire protection system and the PACK-level fire protection system are used in combination. When the PACK-level fire protection system fails to control the fire in the battery pack in time and the fire shows a tendency to spread, the cabinet 01 fire protection system can carry out comprehensive fire extinguishing of the entire energy storage cabinet, preventing the fire from spreading to other cabinets 01 or the surrounding environment. This complements each other at different levels, minimizing the damage of the fire to the energy storage system and ensuring the safety of personnel and property.

[0051] like Figure 1 , 3 As shown, a dehumidifier 114 for dehumidifying the energy storage compartment 11 is installed on the inner wall of the cabinet door 113. The dehumidifier 114 is electrically connected to the two-phase interface 14.

[0052] The dehumidifier 114 is also installed on the front cabinet door 113, which has a better dehumidification effect than the rear cabinet door 113. The terminal box 1131 is electrically connected to the two-phase interface 14. The dehumidifier 114 is powered through the terminal box 1131. The energy storage compartment 11 is also equipped with a temperature and humidity sensor. When it detects that the humidity inside the cabinet 01 is too high, the dehumidifier 114 starts to dehumidify to ensure that the air inside the cabinet 01 is dry. The cabinet 01 is equipped with pipes for draining condensate and dehumidifying liquid. The bottom of the cabinet 01 is equipped with a floor drain 116 to ensure that condensate and dehumidifying liquid can be smoothly drained out of the cabinet 01 to avoid accumulation and malfunction, and to ensure the stable operation of the multi-functional energy storage cabinet.

[0053] like Figure 1 , 2 As shown, the cabinet door 113 is equipped with louvers 115 for ventilation and heat dissipation.

[0054] Both the front and rear cabinet doors 113 are equipped with ventilation and heat dissipation louvers 115. The louvers 115 on the front cabinet door 113 are for air intake, and the louvers 115 on the rear cabinet door 113 are for air exhaust. Moreover, the lower edge of the louvers 115 is equipped with a drain outlet to ensure that rainwater falling on the louvers 115 can be discharged outside the cabinet 01 through the drain outlet. In addition, air ducts are provided at the air outlets of the inverter 121 and the liquid cooling unit 21, and the heat generated by them is discharged through the air ducts to avoid affecting other low-power equipment in the electrical compartment 12, while also enhancing the heat dissipation effect. An air cavity can also be installed on the louvers 115 of the rear cabinet door 113. The air cavity allows the hot air blown out of the air duct to be collected and evenly discharged through the louvers 115 of the rear cabinet door 113 under the action of wind pressure. The air cavity has an opening that connects with the air duct. Sealing buffer cotton can also be pasted around the opening of the air cavity. When the rear cabinet door 113 is closed, it ensures that the air duct and the corresponding air outlet of the air cavity are connected and compacted to prevent hot air from overflowing and ensure that the dustproof and waterproof rating of the cabinet 01 reaches IP54 or above.

[0055] like Figure 1 , 2 As shown, the multi-functional liquid-cooled energy storage cabinet also includes an information management box 05 electrically connected to the two-phase interface 14. The information management box 05 is installed on the cabinet door 113 and establishes information interaction with the dehumidifier 114, the liquid cooling unit 02, the converter 121 and the fire protection unit 04.

[0056] Terminal box 1131 is electrically connected to two-phase interface 14. Information management box 05, i.e., information management system, is powered through terminal box 1131. Information management box 05 is equivalent to the brain of multi-functional liquid-cooled energy storage cabinet. Signals from liquid cooling unit 21, fire control box 42, converter 121, temperature and humidity sensor, five-in-one sensor, high voltage box 111, etc., are all communicated to information management box 05. Information management box 05 is also equipped with an APP client to establish human-machine interaction. Information management box 05 can transmit detected information to the APP client via 4G or WIFI, making it convenient to receive and view relevant information. The APP client can also remotely control the actions of corresponding equipment without having to go to the site, which greatly improves the convenience and timeliness of operation. Moreover, information management box 05 can also make corresponding self-protection decisions through internal logic, thereby enhancing the stability and reliability of multi-functional liquid-cooled energy storage cabinet, reducing the risk of equipment damage due to sudden situations, and ensuring the normal operation and efficient use of multi-functional liquid-cooled energy storage cabinet.

[0057] An indicator light 117 with three different colors or three independent light cores (such as red, green and yellow) can also be installed in the center of the front cabinet door 113. The indicator light 117 is electrically connected to and controlled by the information management box 05. Each color represents the different working states of the multi-functional liquid-cooled energy storage cabinet (such as red for alarm state, green for charging state, yellow for discharging state, etc.). The status can be identified by the color of the indicator light 117, and the appearance is also more beautiful.

[0058] like Figure 1 , 2 As shown, the top of the cabinet 01 is provided with multiple lifting lugs 119 for lifting, and the bottom of the cabinet 01 is provided with a base support 118 for handling.

[0059] The installation of lifting lugs 119 and base support 118 allows for flexible handling of the multi-functional liquid-cooled energy storage cabinet during installation and transportation. This can be achieved by either using a forklift or by top-mounting.

[0060] It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0061] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0062] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A multifunctional liquid-cooled energy storage cabinet, characterized in that: The device includes a cabinet, a liquid cooling unit, and multiple liquid-cooled battery packs. The cabinet includes an energy storage compartment and an electrical compartment. The liquid-cooled battery packs are housed in the energy storage compartment, which also contains a high-voltage box electrically connected to the liquid-cooled battery packs for voltage stabilization and current control. The cabinet exterior has three-phase and two-phase interfaces. The electrical compartment contains a converter electrically connected to the three-phase interfaces, which is also electrically connected to the high-voltage box. The liquid cooling unit includes a liquid cooling unit and liquid cooling pipes sealed to it. The liquid cooling unit is housed in the electrical compartment and electrically connected to the two-phase interfaces. The liquid cooling pipes are sealed to the multiple liquid-cooled battery packs.

2. The multifunctional liquid-cooled energy storage cabinet according to claim 1, characterized in that: The liquid cooling pipe includes an inlet pipe and a return pipe. The inlet pipe is provided with a first pipe that is sealed and connected to each liquid-cooled battery pack, and the return pipe is provided with a second pipe that is sealed and connected to each liquid-cooled battery pack.

3. The multifunctional liquid-cooled energy storage cabinet according to claim 2, characterized in that: The electrical compartment is also equipped with a three-phase junction box and an AC circuit breaker connected between the three-phase interface and the converter circuit. During charging, the current flows from the three-phase interface into the three-phase junction box, the AC circuit breaker and the converter in sequence.

4. A multifunctional liquid-cooled energy storage cabinet according to claim 3, characterized in that: The electrical compartment is also equipped with meters and current transformers electrically connected to them. The current transformers are connected to the circuit between the three-phase interface and the AC circuit breaker.

5. A multifunctional liquid-cooled energy storage cabinet according to claim 4, characterized in that: The energy storage compartment is also equipped with a power distribution box, which is connected to the circuit between the liquid-cooled battery pack and the high-voltage box. The power distribution box is equipped with a circuit breaker for circuit protection.

6. A multifunctional liquid-cooled energy storage cabinet according to claim 5, characterized in that: It also includes a fire protection unit. The cabinet has two doors facing each other. The fire protection unit includes a fire cylinder, a detector, a fire control box, and a fire alarm. The fire cylinder, detector, and fire alarm are all electrically connected to the fire control box. The fire control box is electrically connected to a two-phase interface. The fire cylinder is located in the energy storage compartment. The fire control box and the fire alarm are both located on the cabinet doors.

7. A multifunctional liquid-cooled energy storage cabinet according to claim 6, characterized in that: The inner wall of the cabinet door is equipped with a dehumidifier for dehumidifying the energy storage compartment, and the dehumidifier is electrically connected to a two-phase interface.

8. A multifunctional liquid-cooled energy storage cabinet according to claim 7, characterized in that: The cabinet door is equipped with louvers for ventilation and heat dissipation.

9. A multifunctional liquid-cooled energy storage cabinet according to claim 8, characterized in that: It also includes an information management box electrically connected to the two-phase interface. The information management box is installed on the cabinet door and establishes information interaction with the dehumidifier, liquid cooling unit, inverter and fire protection unit.

10. A multifunctional liquid-cooled energy storage cabinet according to claim 9, characterized in that: The top of the cabinet is equipped with multiple lifting lugs for lifting, and the bottom of the cabinet is equipped with a base for handling.

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