Liquid cooling energy storage container

Abstract

The utility model relates to a liquid cooling energy storage container. The utility model aims to provide the liquid cooling energy storage container which is safe, reliable, long in service life, environment-friendly and controllable in temperature. The liquid cooling energy storage container comprises a container body, a liquid cooling part, a battery and a battery box used for containing the battery, the container body is provided with an energy storage cabin and a liquid cooling cabin, the liquid cooling part comprises a refrigerating machine and a liquid cooling pipe composed of a liquid inlet pipe and a liquid return pipe, the liquid cooling pipe is communicated with the refrigerating machine and used for cooling, and the refrigerating machine is arranged in the liquid cooling cabin. The battery is arranged in the battery box, the battery box is arranged in the energy storage cabin, and the liquid inlet pipe and the liquid return pipe are both communicated with the battery box to cool the battery box.

Description

Technical Field

[0001] This utility model relates to an energy storage container, and more particularly to a liquid-cooled energy storage container. 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] Renewable energy power generation will gradually become the main source of installed capacity and electricity. However, the instability and volatility of wind and solar power generation will inevitably require the coordinated operation of energy storage systems to ensure the safe and stable operation of the power system. Energy storage containers are a type of energy storage device that can store electrical energy and release it when needed. The interior of the energy storage container is equipped with large-capacity batteries and corresponding control systems. When the batteries in the energy storage container are storing and releasing energy, they will generate a lot of heat. High temperatures accelerate battery aging, shorten battery life, and may also cause safety accidents such as explosions and fires.

[0004] Current energy storage containers all rely on air cooling for heat dissipation. Each end of the container is equipped with a fan that blows air inward and an exhaust fan that blows air outward. This not only generates a lot of noise during operation but is also greatly affected by the ambient temperature. In particular, the air cooling effect is not good in high-temperature environments, which makes it urgent to develop an energy storage container with better cooling performance. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a safe, reliable, long-lasting, environmentally friendly, and temperature-controllable liquid-cooled energy storage container.

[0006] This utility model discloses a liquid-cooled energy storage container, comprising a container body, a liquid-cooling section, a battery, and a battery box for housing the battery. The container body is provided with an energy storage compartment and a liquid-cooling compartment. The liquid-cooling section includes a refrigeration unit and a liquid-cooling pipe composed of an inlet pipe and a return pipe. The liquid-cooling pipe is connected to the refrigeration unit for cooling. The refrigeration unit is located in the liquid-cooling compartment. The battery is located in the battery box, which is located in the energy storage compartment. Both the inlet pipe and the return pipe are connected to the battery box for cooling.

[0007] This utility model discloses a liquid-cooled energy storage container, wherein the energy storage compartment is rectangular in shape, and multiple battery compartments are constructed by multiple uprights and crossbars that are evenly arranged in the horizontal and vertical directions. Each battery compartment contains a battery box.

[0008] This utility model discloses a liquid-cooled energy storage container, wherein the liquid-cooled pipe includes a primary liquid-cooled pipe, a secondary liquid-cooled pipe and a tertiary liquid-cooled pipe. The two ends of the primary liquid-cooled pipe are respectively connected to the liquid-cooling unit and the secondary liquid-cooled pipe. The two ends of the secondary liquid-cooled pipe are respectively connected to the primary liquid-cooled pipe and the tertiary liquid-cooled pipe. The two ends of the tertiary pipe are respectively connected to the secondary liquid-cooled pipe and the battery box.

[0009] This utility model discloses a liquid-cooled energy storage container, wherein the bottom of the battery box is a hollow liquid-cooled plate, and the inlet and outlet pipes of the three-stage liquid-cooled pipe are respectively connected to the inlet and outlet of the liquid-cooled plate.

[0010] This utility model relates to a liquid-cooled energy storage container, wherein the bottom of both the energy storage compartment and the liquid-cooled compartment is equipped with multiple floor drains for liquid drainage.

[0011] This utility model discloses a liquid-cooled energy storage container, wherein the bottom of the energy storage compartment and the liquid-cooled compartment are provided with multiple ventilation grilles for heat dissipation.

[0012] This utility model discloses a liquid-cooled energy storage container, wherein an electrical compartment for regulating the liquid-cooled energy storage container is also provided on the outside of the container body.

[0013] The difference between this utility model and existing technologies lies in its segmented design of the container. The interior of the container houses an energy storage compartment, a liquid cooling compartment, and a battery compartment, while the exterior includes an electrical compartment for regulating the container. The refrigeration unit of the liquid cooling system and the battery pack are installed in the liquid cooling compartment and battery compartment, respectively, forming a rectangular liquid-cooled energy storage container structure with clear longitudinal and transverse divisions. The liquid cooling system is connected to the battery pack in the battery compartment via liquid cooling pipes for temperature control. The liquid generated during the cooling process flows out of the container through a floor drain, forming a circulating and reliable liquid-cooled energy storage container. This avoids safety and environmental problems such as battery pack combustion or even explosion, extends the service life of the battery pack and the entire liquid-cooled energy storage container, and improves the recycling rate of electrical energy from wind power and other power generation equipment.

[0014] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a liquid-cooled energy storage container according to the present invention;

[0016] Figure 2 This utility model Figure 1 A magnified view of a portion of the image;

[0017] Figure 3 This is a front view of a liquid-cooled energy storage container according to the present invention;

[0018] Figure 4 is a right view of the liquid-cooled energy storage container of the utility model;

[0019] Figure 5 is a structural schematic view of the bottom of the liquid-cooled energy storage container of the utility model;

[0020] Figure 6 is a three-dimensional structural schematic view of the liquid-cooled part of the utility model;

[0021] Figure 7 is a three-dimensional structural schematic view of the battery installed in the battery box of the utility model;

[0022] Figure 8 is a three-dimensional structural schematic view of the floor drain of the utility model.

[0023] Reference signs:

[0024] 01 - box body; 11 - energy storage cabin; 111 - vertical rod; 112 - horizontal rod; 113 - battery cabin; 12 - liquid-cooled cabin; 13 - floor drain; 14 - ventilation grille; 02 - liquid-cooled part; 21 - refrigerating machine; 22 - liquid-cooled pipe; 221 - liquid inlet pipe; 222 - liquid return pipe; 223 - first-stage liquid-cooled pipe; 224 - second-stage liquid-cooled pipe; 225 - third-stage liquid-cooled pipe; 03 - battery; 04 - battery box; 41 - liquid-cooled plate. DETAILED DESCRIPTION

[0025] As shown in Figure 1 , 2 , 3, the utility model relates to a liquid-cooled energy storage container, which comprises a box body 01, a liquid-cooled part 02, a battery 03 and a battery box 04 for containing the battery 03, the box body 01 is provided with an energy storage cabin 11 and a liquid-cooled cabin 12, the liquid-cooled part 02 comprises a refrigerating machine 21 and a liquid-cooled pipe 22 composed of a liquid inlet pipe 221 and a liquid return pipe 222, the liquid-cooled pipe 22 is communicated with the refrigerating machine 21 for cooling, the refrigerating machine 21 is arranged in the liquid-cooled cabin 12, the battery 03 is arranged in the battery box 04, the battery box 04 is arranged in the energy storage cabin 11, and the liquid inlet pipe 221 and the liquid return pipe 222 are communicated with the battery box 04 to cool it.

[0026] The left side of the box 01 is the energy storage cabin 11, and the right side is the liquid cooling cabin 12. The refrigerator 21 of the liquid cooling part 02 is installed in the liquid cooling cabin 12, and the battery box 04 is installed in the energy storage cabin 11. The liquid cooling cabin 12 and the energy storage cabin 11 are provided with a through hole or groove for passing through the refrigeration pipe below the partition plate. The liquid outlet of the refrigerator 21 is in sealed communication with one end of the liquid inlet pipe 221 through a buckle or threaded interface. It can also be other equivalent or same sealing effect sealing communication mode, preferably detachable connection, convenient for maintenance and replacement of parts. The other end of the liquid inlet pipe 221 is in sealed communication with the liquid inlet of the energy storage cabin 11 and the battery box 04. The liquid outlet of the battery box 04 is in sealed communication with one end of the liquid return pipe 222, and the other end of the liquid return pipe 222 is in sealed communication with the liquid return port of the refrigerator 21. Thus, a controllable temperature energy storage cabin 11 is formed. The energy storage cabin 11 is also provided with a high-voltage box for regulating and controlling the battery 03, effectively controlling the inflow and outflow of electrical energy in the battery 03, preventing overvoltage and electrical energy loss, etc.

[0027] In use, the liquid-cooled energy storage container stores the electrical energy of the wind power generation or other generator set and the like into the battery 03. During the storage process, the temperature of the battery 03 gradually rises, and when it reaches the set value (such as 15 degrees Celsius), the liquid cooling part 02 starts to work to cool it. When it drops to the set value, the liquid cooling part 02 stops working to avoid overheating and burning or explosion of the battery 03, and prolongs the service life of the battery 03 and the liquid-cooled energy storage container. The liquid-cooled energy storage container is electrically connected with the external power grid, thereby ensuring the stability of the power grid system. When the power grid needs electrical energy, the high-voltage box regulates and controls the electrical energy in the battery 03 to be output to the power grid system. Similarly, during the output process, the liquid cooling part 02 regulates and controls the battery 03 in real time according to the temperature of the battery 03 to ensure the stable work of the liquid-cooled energy storage container.

[0028] As shown in Figure 1 , 2 , 3, the energy storage cabin 11 is a rectangular parallelepiped. A plurality of battery cabins 113 are arranged uniformly in the transverse and longitudinal directions in the energy storage cabin 11, which is constructed by a plurality of vertical rods 111 and horizontal rods 112. Each battery cabin 113 is provided with a battery box 04.

[0029] The cuboid-shaped box 01 and the cuboid-shaped energy storage cabin 11 can better adapt to other energy storage devices (such as the battery box 04 and the battery 03). The battery box 04 also has a regular cuboid shape. Thus, the arrangement facilitates arrangement and reduces space waste. The vertical rods 111 in the energy storage cabin 11 are uniformly arranged in the left-right direction and the front-rear direction and are firmly fixed on the box 01. The energy storage cabin 11 is divided into a plurality of small cuboid-shaped cabins. Then, each small cuboid-shaped cabin is divided into a plurality of battery cabins 113 in the vertical direction through the horizontal rods 112. That is, the battery cabins 113 are uniformly arranged in the horizontal direction and the vertical direction in the energy storage cabin 11. The horizontal rods 112 are provided with support plates, such as L-shaped guide rails, for supporting the battery box 04. Pulleys can be installed on the support plates. Sliding plates can also be laid in each battery cabin 113 to reduce the friction between them and facilitate the loading of the battery box 04. The front and rear sides of the box 01 are designed in an open manner, which facilitates the storage or removal of the battery 03 and improves work efficiency. One battery box 04 containing the battery 03 is placed in each battery cabin 113. Each battery box 04 is in sealed communication with one liquid cooling pipe 22 for temperature control, thereby ensuring the stable operation of the battery 03 in the energy storage cabin 11.

[0030] As shown in Figure 1 , 2 , 3, 6, the liquid cooling pipe 22 includes a first-level liquid cooling pipe 223, a second-level liquid cooling pipe 224, and a third-level liquid cooling pipe 225. The two ends of the first-level liquid cooling pipe 223 are in sealed communication with the liquid cooling unit and the second-level liquid cooling pipe 224, respectively. The two ends of the second-level liquid cooling pipe 224 are in sealed communication with the first-level liquid cooling pipe 223 and the third-level liquid cooling pipe 225, respectively. The two ends of the third-level liquid cooling pipe 225 are in sealed communication with the second-level liquid cooling pipe 224 and the battery box 04, respectively.

[0031] Each level of the liquid cooling pipe 22 includes an inlet pipe 221 and a return pipe 222. The two ends of the inlet pipe 221 of the first-level liquid cooling pipe 223 are in sealed communication with the outlet of the refrigeration machine 21 and one end of the inlet pipe 221 of the second-level liquid cooling pipe 224, respectively. The other end of the inlet pipe 221 of the second-level liquid cooling pipe 224 is in sealed communication with one end of the inlet pipe 221 of the third-level liquid cooling pipe 225. The other end of the inlet pipe 221 of the third-level liquid cooling pipe 225 is in sealed communication with the inlet of the battery box 04. The outlet of the battery box 04 is in sealed communication with one end of the return pipe 222 of the third-level liquid cooling pipe 225. The other end of the return pipe 222 of the third-level liquid cooling pipe 225 is in sealed communication with one end of the return pipe 222 of the second-level liquid cooling pipe 224. The other end of the return pipe 222 of the second-level liquid cooling pipe 224 is in sealed communication with one end of the return pipe 222 of the first-level liquid cooling pipe 223. The other end of the return pipe 222 of the first-level liquid cooling pipe 223 is in sealed communication with the return of the refrigeration machine 21. Thus, a cooling circulation system for temperature control of each battery 03 is formed.

[0032] According to the structure of the box 01 and the energy storage cabin 11, the first liquid cooling pipe 223, the second liquid cooling pipe 224 and the third liquid cooling pipe 225 are provided with two groups in front and back, the two groups of first liquid cooling pipes 223 are sealed and connected in parallel through the connecting pipe, the first liquid cooling pipe 223 can be arranged at the top or the bottom of the energy storage cabin 11, and is preferably arranged at the bottom for convenient installation and maintenance, the liquid outlet pipe and the liquid return pipe 222 of the second liquid cooling pipe 224 are fixed on the vertical rod 111 at the left and right ends of the battery cabin 113 in the vertical direction by means of the clamp or other devices, the third liquid cooling pipe 225 corresponds to each battery cabin 113, and the arrangement is not only beautiful but also saves space.

[0033] During the working process, when the temperature of the battery 03 rises to the set value, the refrigerator 21 starts to work, the refrigerator 21 delivers the refrigerant to the battery box 04 through the first liquid cooling pipe 223, the second liquid cooling pipe 224 and the third liquid cooling pipe 225, cools the battery 03 in the battery box 04, takes away the heat generated by the battery 03, and then returns to the refrigerator 21 to continue the cycle refrigeration, so as to achieve the purpose of controlling the temperature of the battery 03.

[0034] As shown in Figure 7 , the bottom of the battery box 04 is provided with a hollow liquid cooling plate 41, and the liquid inlet pipe 221 and the liquid return pipe 222 of the third liquid cooling pipe 225 are respectively communicated with the liquid inlet and the liquid outlet of the liquid cooling plate 41.

[0035] The bottom of the battery box 04 is the liquid cooling plate 41 made of aluminum alloy or copper alloy, and the liquid inlet pipe 221 and the liquid return pipe 222 of the third liquid cooling pipe 225 are respectively sealed and communicated with the liquid inlet and the liquid outlet on the left side of the liquid cooling plate 41. In addition to the temperature regulation of the battery 03 by the refrigerant circulation of the liquid cooling part 02, the high heat conduction and heat dissipation of the liquid cooling plate 41 further strengthen the cooling effect of the battery 03, and through the double temperature control mechanism, the battery 03 can be effectively maintained in the appropriate working temperature range, thereby prolonging the service life of the battery 03 and avoiding safety accidents caused by overheating of the battery 03.

[0036] As shown in Figure 5 , 8 , the bottom of the energy storage cabin 11 and the liquid cooling cabin 12 is provided with a plurality of floor drains 13 for draining liquid.

[0037] The drain 13 is arranged below the drain for liquid discharge, and the bottom of the box 01, i.e. the energy storage cabin 11 and the liquid cooling cabin 12, is provided with a plurality of through holes for installing the drain 13, and the bottom of the box 01 is reserved a certain thickness to facilitate the installation of the drain 13. The drain 13 is installed in the through hole in the bottom of the box 01, and one end of the drain 13 is in close sealing communication with the drain 13 to ensure that no leakage occurs. The other end extends into the bottom of the box 01 and penetrates out of the side of the bottom of the box 01, preventing liquid from accumulating below the box 01 and avoiding corrosion of the bottom of the box 01. The energy storage cabin 11 and the liquid cooling cabin 12 are each provided with at least two drains 13, and the drain 13 can be arranged to have a certain inclination (i.e. inclined drain 13) according to the position of the drain 13 and the actual liquid discharge requirement, to ensure that the liquid in the energy storage cabin 11 and the liquid cooling cabin 12 can be smoothly discharged, further reducing the corrosion of the liquid on the box 01, and ensuring the stable operation of the liquid cooling and energy storage container, as shown in Figure 4 The right side of the liquid cooling cabin 12 is also provided with a plurality of observation windows, through which the working condition of the liquid cooling part 02 can be observed to facilitate system maintenance.

[0038] As shown in Figure 5 The bottom of the energy storage cabin 11 and the liquid cooling cabin 12 is also provided with a plurality of ventilation grilles 14 for heat dissipation.

[0039] The bottom of the box 01, i.e. the energy storage cabin 11 and the liquid cooling cabin 12, is provided with a plurality of ventilation grilles 14 for ventilation. A large amount of heat is generated during the operation of the battery 03, and external cold air enters the energy storage cabin 11 through the ventilation grilles 14 to reduce the temperature of the battery 03. The ventilation grilles 14 can also prevent the liquid cooling cabin 12 from being humid and frosting, and a small amount of harmful gas may be generated in the box 01, which can be smoothly discharged through the ventilation grilles 14 to ensure the stable operation of the liquid cooling and energy storage container.

[0040] As shown in Figure 4 The box 01 is also provided with an electrical cabin 15 for controlling the liquid cooling and energy storage container.

[0041] The right side of the box 01 is also provided with an electrical cabin 15, which controls the start, stop and operation state of the refrigeration machine 21 and other equipment in the liquid cooling system, and controls the distribution of the electric energy of the battery 03. The electrical cabin 15 is also provided with a safety device such as a circuit breaker to protect the electrical safety of the whole system. The electrical cabin 15 can also be equipped with a communication module to further realize communication with a remote terminal. A fire extinguisher is also hung beside the electrical cabin 15, which can be quickly and effectively controlled in case of fire and other accidents.

[0042] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "middle" and the like indicate the orientation or positional relationship based on the orientation or positional 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0043] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] The above-described embodiments are merely preferred embodiments of the present application, and are not intended to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the scope of protection determined by the claims of the present application.

Claims

1. A liquid-cooled energy storage container, characterized in that: The device includes a housing, a liquid cooling section, a battery, and a battery box for housing the battery. The housing is provided with an energy storage compartment and a liquid cooling compartment. The liquid cooling section includes a refrigerator and a liquid cooling pipe composed of an inlet pipe and a return pipe. The liquid cooling pipe is connected to the refrigerator for cooling. The refrigerator is located in the liquid cooling compartment. The battery is located in the battery box, which is located in the energy storage compartment. Both the inlet pipe and the return pipe are connected to the battery box for cooling.

2. The liquid-cooled energy storage container according to claim 1, characterized in that: The energy storage compartment is rectangular in shape. Inside the energy storage compartment, multiple battery compartments are constructed by multiple uprights and crossbars, which are evenly arranged in the horizontal and vertical directions. Each battery compartment contains a battery box.

3. The liquid-cooled energy storage container according to claim 2, characterized in that: The liquid cooling pipe includes a primary liquid cooling pipe, a secondary liquid cooling pipe, and a tertiary liquid cooling pipe. The two ends of the primary liquid cooling pipe are connected to the liquid cooling unit and the secondary liquid cooling pipe, respectively. The two ends of the secondary liquid cooling pipe are connected to the primary liquid cooling pipe and the tertiary liquid cooling pipe, respectively. The two ends of the tertiary pipe are connected to the secondary liquid cooling pipe and the battery box, respectively.

4. A liquid-cooled energy storage container according to claim 3, characterized in that: The bottom of the battery box is a hollow liquid cooling plate, and the inlet and outlet pipes of the three-stage liquid cooling pipe are respectively connected to the inlet and outlet of the liquid cooling plate.

5. A liquid-cooled energy storage container according to claim 4, characterized in that: Both the energy storage chamber and the liquid cooling chamber are equipped with multiple floor drains at the bottom for draining liquid.

6. A liquid-cooled energy storage container according to claim 5, characterized in that: The bottom of the energy storage compartment and the liquid cooling compartment are also equipped with multiple ventilation grilles for heat dissipation.

7. A liquid-cooled energy storage container according to claim 6, characterized in that: An electrical compartment for regulating the liquid-cooled energy storage container is also provided on the outside of the container.

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