Energy storage cabinet

Abstract

The utility model discloses an energy storage cabinet, and belongs to the technical field of energy storage. The energy storage cabinet comprises a cabinet body, a battery system and a liquid cooling system, a first partition plate is arranged in the cabinet body, the internal space of the cabinet body is divided into a battery bin and an electric appliance bin by the first partition plate, and the internal spaces of the battery bin and the electric appliance bin are mutually independent; the liquid cooling system comprises a liquid cooling unit, a liquid cooling plate and a circulating pipeline; the battery system and the liquid cooling plate are arranged in the battery compartment; the liquid cooling unit is arranged in the electric appliance bin, one end of the circulation pipeline is communicated with the liquid cooling unit, and the other end of the circulation pipeline penetrates through the first partition plate to be communicated with the liquid cooling plate.

Description

Technical Field

[0001] This utility model relates to an energy storage cabinet. Background Technology

[0002] With the increasing global demand for renewable energy and the ever-growing requirements for the stability and flexibility of power systems, energy storage cabinets, as devices capable of effectively storing and releasing electrical energy, are gradually becoming an indispensable part of the energy sector. Their industrial and commercial value is particularly significant, with widespread applications across multiple industries and scenarios. For example, in large-scale power-consuming facilities such as factories and data centers, energy storage cabinets can charge during off-peak hours at night and supply power during peak hours in the daytime, helping users avoid peak electricity consumption periods and significantly reducing electricity costs. Furthermore, energy storage cabinets are also suitable for outdoor activities, emergency power supplies in emergency situations, and continuous power supply in remote areas or areas with unstable power grids.

[0003] The importance of energy storage cabinets becomes even more prominent when combined with renewable energy sources. They can not only work with intermittent energy sources such as photovoltaic and wind power systems to solve the problem of discontinuous power generation caused by weather, time and other factors, but also improve the efficiency and stability of the entire power system by optimizing energy dispatch.

[0004] However, batteries in energy storage cabinets generate a significant amount of heat during charging and discharging, which not only affects battery efficiency but may also shorten their lifespan and even pose safety hazards. To address this challenge, the market currently primarily employs two thermal management methods: air cooling and liquid cooling. Air cooling is simple and easy to implement, but its cooling effect is limited; while liquid cooling is favored due to its superior temperature control performance. For example, Chinese invention patent application number 202210907477.2 discloses a method for cooling the battery box using water-cooled pipes. While this method can solve the battery overheating problem to some extent, it still has some shortcomings. In particular, coolant leakage may damage the battery, potentially leading to short circuits or other malfunctions, seriously affecting the safe operation and reliability of the energy storage cabinet.

[0005] To address the safety issues associated with liquid cooling, this invention provides an energy storage cabinet. Utility Model Content

[0006] The purpose of this utility model is to provide an energy storage cabinet to solve the technical problems mentioned in the background art.

[0007] The technical solution to achieve the purpose of this utility model is:

[0008] An energy storage cabinet includes a cabinet body, a battery system, and a liquid cooling system. The cabinet body has a first partition plate that divides the internal space of the cabinet body into a battery compartment and an electrical appliance compartment, with the internal spaces of the battery compartment and the electrical appliance compartment being independent of each other. The liquid cooling system includes a liquid cooling unit, a liquid cooling plate, and a circulation pipeline. The battery system and the liquid cooling plate are both located within the battery compartment. The liquid cooling unit is located within the electrical appliance compartment. One end of the circulation pipeline is connected to the liquid cooling unit, and the other end of the circulation pipeline passes through the first partition plate and is connected to the liquid cooling plate.

[0009] Furthermore, the electrical compartment and battery compartment are arranged side by side from left to right inside the cabinet; the electrical compartment contains electrical equipment, and the liquid cooling unit is located on top of the electrical equipment.

[0010] Furthermore, the electrical compartment is provided with a second partition, with the liquid cooling unit located above the second partition and the electrical equipment located below the second partition, the second partition separating the liquid cooling unit and the electrical equipment.

[0011] Furthermore, the battery system includes multiple battery packs stacked from top to bottom within the battery compartment, with a liquid cooling plate on top of each battery pack.

[0012] Furthermore, the inner wall of the battery compartment is provided with an insulation layer.

[0013] Furthermore, the energy storage cabinet also includes a fire protection system, which includes fire extinguishing components; a first front door is provided on the front side of the battery compartment, and a fire extinguishing component is provided on the side of the first front door near the battery compartment.

[0014] Furthermore, the position of the fire extinguishing component corresponds to the position of the topmost battery pack among the multiple battery packs; the fire extinguishing component includes a smoke sensor, a temperature sensor, and an aerosol fire extinguishing device. The smoke sensor and the temperature sensor are both connected to the aerosol fire extinguishing device. When the smoke sensor and the temperature sensor detect a fire in the battery compartment, they control the aerosol fire extinguishing device to extinguish the fire.

[0015] Furthermore, the fire protection system also includes an explosion-proof plate; the cabinet at the top of the battery compartment is provided with a mounting hole, the size of which matches the explosion-proof plate, and the explosion-proof plate is fixedly installed in the mounting hole.

[0016] Furthermore, the electrical compartment is provided with a second front door and a second rear door on its front and rear sides, respectively.

[0017] Furthermore, the bottom of the cabinet is provided with a forklift slot.

[0018] Furthermore, a grounding nut is provided at the bottom of the cabinet to facilitate the installation of the grounding harness.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects:

[0020] (1) Compared with the method of cooling the battery box by water cooling pipe disclosed in the prior art, such as Chinese invention patent application number 202210907477.2, this utility model places the liquid cooling unit in the electrical compartment and the liquid cooling plate in the battery compartment. The liquid cooling unit and the liquid cooling plate are connected by a circulation pipe, which ensures that the coolant can circulate in the closed system, effectively reducing the temperature of the battery system. Importantly, the internal spaces of the battery compartment and the electrical compartment are completely independent, realizing liquid-electric separation. This not only avoids the damage to the battery that may be caused by coolant leakage, thereby eliminating potential safety hazards, but also improves the safety and reliability of the entire energy storage cabinet operation.

[0021] (2) The electrical compartment and battery compartment of this utility model are arranged side by side from left to right inside the cabinet; the electrical compartment is equipped with electrical equipment, and the liquid cooling unit is located on top of the electrical equipment; the cold air in the liquid cooling unit moves downward to cool the electrical equipment in the electrical compartment, ensuring the ambient temperature required for the normal operation of the electrical equipment, thereby ensuring the stable operation of the electrical equipment. Furthermore, placing the liquid cooling unit on top of the electrical equipment facilitates the addition and discharge of coolant to the liquid cooling unit, and also facilitates the connection of the circulation pipeline through the first partition to the liquid cooling plate.

[0022] (3) The liquid cooling unit and electrical equipment of this utility model are separated by a first partition plate, which realizes the separation of liquid and electricity. This avoids the damage to electrical equipment that may be caused by coolant leakage, thereby eliminating potential safety hazards.

[0023] (4) Each battery pack of this utility model is provided with a liquid cooling plate on the top, which utilizes the sinking of cold air to quickly and effectively cool the battery pack.

[0024] (5) The battery compartment of this utility model has an insulation layer on its inner wall, which reduces the heat transfer between the inside and outside, effectively maintains the temperature stability inside the battery compartment, significantly reduces the heat exchange between the battery compartment and the outside, and thus reduces the working frequency of the liquid cooling unit to a certain extent, thereby effectively reducing energy consumption and achieving energy saving effect.

[0025] (6) The front of the battery compartment of this utility model is provided with a first front door, and a fire extinguishing component is provided on the side of the first front door near the battery compartment. When a fire or thermal runaway occurs in the battery compartment, the fire extinguishing component can detect it immediately and extinguish the fire in time.

[0026] (7) The fire extinguishing component of this utility model includes a smoke sensor, a temperature sensor and an aerosol fire extinguishing device. The smoke sensor and the temperature sensor are both connected to the aerosol fire extinguishing device. When the smoke sensor and the temperature sensor detect fire or smoke caused by fire or thermal runaway in the battery compartment, they control the aerosol fire extinguishing device to start extinguishing the fire.

[0027] (8) The position of the fire extinguishing component of this utility model corresponds to the position of the topmost battery pack among multiple battery packs. It combines the real-time monitoring functions of smoke sensor and temperature sensor. When an emergency such as fire or smoke caused by fire or thermal runaway is detected in the battery compartment, the aerosol fire extinguishing device can be quickly activated to spray aerosol. Since the sprayed aerosol has a sinking trend and its position corresponds to the position of the topmost battery pack, it can quickly fill the entire battery compartment in a short time, thereby improving the timeliness and effectiveness of fire extinguishing.

[0028] (9) The electrical compartment of this utility model is provided with a second front door and a rear door on the front and rear sides respectively, which facilitates the installation and maintenance of the internal equipment.

[0029] (10) The bottom of the cabinet of this utility model is provided with a forklift slot for easy transportation.

[0030] (11) The top of the battery compartment of this utility model is equipped with an explosion-proof plate. When a large amount of gas is generated inside the battery compartment due to thermal runaway of one or more battery packs, causing the gas pressure inside the battery compartment to rise to the explosion threshold of the explosion-proof plate, the explosion-proof plate will immediately break and quickly release the high-pressure gas inside the battery compartment to prevent the cabinet from exploding due to excessive gas pressure, thereby avoiding possible damage to surrounding personnel from the fragments. Attached Figure Description

[0031] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0032] Figure 1 This is a front view of an energy storage cabinet according to an embodiment of the present invention.

[0033] Figure 2 The front view of the energy storage cabinet in one embodiment of this utility model omits the first front door and the second front door.

[0034] Figure 3 This is a rear view of an energy storage cabinet according to an embodiment of the present invention.

[0035] Figure 4 This is a rear view of the energy storage cabinet, omitting the rear wall of the battery compartment and the rear door, according to one embodiment of the present invention.

[0036] Figure 5 This is a schematic diagram of the exploded structure of an energy storage cabinet according to an embodiment of the present invention.

[0037] The labels in the attached diagram are as follows: Energy storage cabinet 1, cabinet body 2, bottom wall 3, forklift slot 4, top wall 5, side wall 6, first front door 7, second front door 8, rear wall 9, rear door 10, battery compartment 11, electrical compartment 12, first upper cavity 13, first lower cavity 14, battery system 15, battery pack 16, high voltage box 17, junction box 18, liquid cooling unit 19, circulation pipeline 20, fire protection system 21, fire extinguishing components 22, explosion-proof plate 23. Detailed Implementation

[0038] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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.

[0043] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0044] (Example 1)

[0045] Energy storage cabinet 1, cabinet body 2, bottom wall 3, forklift slot 4, top wall 5, side wall 6, first front door 7, second front door 8, rear wall 9, rear door 10, battery compartment 11, electrical compartment 12, first upper cavity 13, first lower cavity 14, battery system 15, battery pack 16, high voltage box 17, junction box 18, liquid cooling unit 19, circulation pipeline 20, fire protection system 21, fire extinguishing components 22, explosion-proof plate 23.

[0046] See Figures 1-5 An energy storage cabinet 1 includes a cabinet body 2, a battery system 15, a liquid cooling system, a fire protection system 21, and electrical equipment;

[0047] Cabinet 2 includes bottom wall 3, top wall 5, side wall 6, first front door 7, second front door 8, rear wall 9, and rear door 10. When the first front door 7 and the second front door 8 are closed, they together form the front panel of cabinet 2. When the rear door 10 is closed, it together with the rear wall 9 forms the rear panel of cabinet 2. There are two side walls 6, namely the left side wall and the right side wall. The left side wall, the right side wall, the front panel, the rear panel, the bottom wall 3, and the top wall 5 together enclose cabinet 2, forming a cubic internal space within cabinet 2.

[0048] The cabinet 2 is equipped with a first partition plate, which divides the internal space of the cabinet 2 from left to right into a battery compartment 11 and an electrical compartment 12. The internal spaces of the battery compartment 11 and the electrical compartment 12 are independent of each other. Based on the principle that cold air sinks and hot air rises, the heat impact between the two compartments is minimized, effectively isolating the heat between the two compartments and improving the IP protection level. The electrical compartment 12 is equipped with a second partition plate, which divides the electrical compartment 12 from top to bottom into a first upper cavity 13 and a first lower cavity 14. The front and rear sides of the electrical compartment 12 are respectively equipped with a second front door 8 and a rear door 10. The front and rear sides of the battery compartment 11 are respectively equipped with a first front door 7 and a rear wall 9. The second front door 8 and the first front door 7 are rotatably connected to the left side wall and the right side wall, respectively, and the rear door 10 is rotatably connected to the left side wall. The equipment in the electrical compartment and the battery compartment can be inspected and installed by opening the rear door, the second front door 8, and the first front door 7.

[0049] Cabinet 1 is made of sheet metal SGCC material with an IP rating of IP55 and a surface coating of RAL9003 paint, with a corrosion resistance rating of C5.

[0050] The inner wall of the battery compartment is equipped with an insulation layer to reduce heat transfer between the inside and outside of the battery compartment.

[0051] The battery system 15 is disposed within the battery compartment 11. The battery system 15 includes multiple battery packs 16, which are stacked from top to bottom within the battery compartment 11.

[0052] The liquid cooling system includes a liquid cooling unit 19, a liquid cooling plate, and a circulation pipe 20. The liquid cooling plate is installed inside the battery compartment 11. The liquid cooling unit is installed in the first upper cavity 13 of the electrical compartment 12 to facilitate the addition and discharge of coolant to the liquid cooling unit 19. One end of the circulation pipe 20 is connected to the liquid cooling unit 19, and the other end of the circulation pipe 20 passes through the first partition plate and is connected to the liquid cooling plate. A pump is installed on the circulation pipe 20, and the pump drives the cooling to circulate between the liquid cooling unit 19 and the liquid cooling plate. Each battery pack is equipped with a liquid cooling plate on its top, which can quickly and effectively cool the battery pack 16 to maintain the ambient temperature required for the normal operation of the battery pack 16.

[0053] Electrical equipment is installed in the first lower cavity 14, including a high-voltage box 17 and a junction box 18.

[0054] The fire protection system 21 includes a fire extinguishing component 22 and an explosion-proof plate 23. The fire extinguishing component 22 includes a smoke sensor, a temperature sensor, and an aerosol fire extinguishing device. The smoke sensor and temperature sensor are both connected to the aerosol fire extinguishing device. When the smoke sensor and temperature sensor detect a fire in the battery compartment 11, they control the aerosol fire extinguishing device to extinguish the fire. The cabinet on the top of the battery compartment is provided with a mounting hole. The size of the mounting hole matches the explosion-proof plate 23. The explosion-proof plate 23 is fixedly installed in the mounting hole.

[0055] The fire extinguishing component 22 is located on the side of the first front door 7 near the battery compartment 11. The position of the fire extinguishing component 22 corresponds to the position of the topmost battery pack 16 among the multiple battery packs 16. When the battery pack 16 experiences thermal runaway, it can detect it immediately and extinguish the fire in time.

[0056] The bottom 3 of cabinet 2 is equipped with a forklift slot for easy transport of the energy storage cabinet.

[0057] The bottom wall 3 is also equipped with a grounding nut mounting structure for easy installation of the grounding harness.

[0058] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An energy storage cabinet, characterized by, Including cabinet (2), battery system (15), liquid cooling system;The cabinet (2) is internally provided with a first partition plate, the first partition plate divides the internal space of the cabinet (2) into battery compartment (11), electrical compartment (12), and the internal space of battery compartment (11), electrical compartment (12) is independent of each other;The liquid cooling system includes liquid cooling unit (19), liquid cooling plate, circulating pipeline (20);The battery system (15), liquid cooling plate are all arranged in battery compartment (11);The liquid cooling unit is arranged in electrical compartment (12), one end of circulating pipeline (20) is communicated with liquid cooling unit (19), the other end of circulating pipeline (20) is communicated with liquid cooling plate through the first partition plate.

2. The energy storage cabinet of claim 1, wherein, The electrical compartment (12), battery compartment (11) are arranged in parallel from left to right in the internal of cabinet (2);The electrical compartment (12) is internally provided with electrical equipment, and the liquid cooling unit (19) is arranged on the top of the electrical equipment.

3. The energy storage cabinet of claim 2, wherein, The electrical compartment (12) is internally provided with a second partition plate, the liquid cooling unit (19) is arranged above the second partition plate, the electrical equipment is arranged below the second partition plate, and the second partition plate separates the liquid cooling unit (19) and the electrical equipment.

4. The energy storage cabinet of claim 1, wherein, The battery system (15) includes a plurality of battery packs, and the plurality of battery packs are stacked from top to bottom in the battery compartment (11), and each battery pack is provided with a liquid cooling plate on the top.

5. The energy storage cabinet of claim 1, wherein, The inner wall of the battery compartment (11) is provided with a heat preservation layer.

6. The energy storage cabinet of claim 1, wherein, The energy storage cabinet further includes a fire extinguishing system, and the fire extinguishing system includes a fire extinguishing assembly (22);The front side of the battery compartment is provided with a first front door, and the side close to the battery compartment is provided with a fire extinguishing assembly (22).

7. The energy storage cabinet of claim 6, wherein, The position of the fire extinguishing assembly (22) corresponds to the position of the topmost battery pack in the plurality of battery packs;The fire extinguishing assembly (22) includes a smoke sensor, a temperature sensor and an aerosol fire extinguishing device, the smoke sensor and the temperature sensor are signal connected with the aerosol fire extinguishing device, and the aerosol fire extinguishing device is controlled to extinguish fire when the smoke sensor and the temperature sensor detect that the battery compartment (11) is on fire.

8. The energy storage cabinet of claim 6, wherein, The fire extinguishing system further includes an explosion-proof plate;The cabinet on the top of the battery compartment is provided with a mounting hole, the size of the mounting hole matches the explosion-proof plate, and the explosion-proof plate is fixedly installed on the mounting hole.

9. The energy storage cabinet of claim 1, wherein, The front side and the rear side of the electrical compartment are respectively provided with a second front door and a rear door.

10. The energy storage cabinet of claim 1, wherein, The bottom of the cabinet is provided with a forklift groove.

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