Liquid cooling energy storage cabinet with independent liquid cooling PACK cabin

Abstract

The utility model discloses a liquid cooling energy storage cabinet with an independent liquid cooling PACK bin. The liquid cooling energy storage cabinet comprises a cabinet body, a top cover, a bottom support and a cooling system. The top cover is installed above the cabinet body, the bottom support is installed below the cabinet body, a front door connected with the cabinet body in a sealing mode is installed in front of the cabinet body, and the interior of the cabinet body is divided into a liquid cooling PACK bin and an electrical bin through a transversely-installed partition plate; a front door plate is installed at the front end of the liquid cooling PACK in a sealed mode, and other working faces of the liquid cooling PACK are all welded in a sealed mode. A plurality of groups of towing rails are longitudinally arranged on the side walls of the two sides of the liquid cooling PACK bin at intervals; the cooling system comprises a cooling-water machine, a liquid supply pipeline, a liquid return pipeline and a heat exchange plate; a liquid supply pipeline and a liquid return pipeline which are connected with a cooling-water machine arranged in the top cover are respectively connected with the battery side heat exchange plate; and cables and pipelines required in the liquid cooling PACK cabin and the top cover are introduced into the interior through the sealing structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage, and particularly relates to a liquid-cooled energy storage cabinet with an independent liquid-cooled PACK bin. Background Art

[0002] The existing energy storage cabinets in the market are divided into two types: air-cooled and liquid-cooled. For the cabinets using the air-cooled method, the refrigerant is the air around the battery, and heat dissipation is carried out through natural or forced convection. However, its cooling effect is weaker than that of liquid cooling; while the existing liquid-cooled energy storage cabinets mostly adopt a left-right structure, that is, the battery and other components are placed on the left and right sides respectively. This method has a simple structure, but it occupies a large area. At the same time, to ensure the protection of the battery, the existing liquid-cooled PACK mostly adopts a high protection level, and accordingly, the cost of the monomer structure and the fire safety cost are relatively high. In addition, the energy storage cabinet generally supports multi-PACK arrangement, making the cost of the whole cabinet increase exponentially. Moreover, if a certain battery undergoes thermal runaway and triggers fire protection, it is easy to affect the batteries that are working normally. Content of the Utility Model

[0003] The utility model mainly aims to overcome the deficiencies of the prior art, and provides a liquid-cooled energy storage cabinet with an independent liquid-cooled PACK bin.

[0004] The utility model is realized through the following technical solutions:

[0005] A liquid-cooled energy storage cabinet with an independent liquid-cooled PACK bin, comprising: a cabinet body, a top cover, a bottom support, and a cooling system;

[0006] The top cover is installed above the cabinet body, the bottom support is installed below the cabinet body, a front door sealedly connected to the cabinet body is installed in front of the cabinet body, and the internal space of the cabinet body is divided into a liquid-cooled PACK bin and an electrical bin by a horizontally installed partition board; a front door panel is sealedly installed at the front end of the liquid-cooled PACK bin, so that the liquid-cooled PACK bin is in a relatively independent sealed state, and the overall protection level can reach IP67; a plurality of groups of drag rails for placing batteries are longitudinally and spacedly arranged on the side walls on both sides of the liquid-cooled PACK bin; the cooling system includes a chiller, a liquid supply pipeline, a liquid return pipeline, and a heat exchange plate; the liquid supply pipeline and the liquid return pipeline connected to the chiller arranged in the top cover are respectively connected to the heat exchange plates on the side parts of the battery, and the cables and pipelines required in the liquid-cooled PACK bin and the top cover are introduced into the interior through a sealing structure to ensure the sealing performance of the liquid-cooled PACK bin.

[0007] In the above technical scheme, the top cover is fixedly installed on the top of the cabinet and covers the chiller of the cooling system. Insulation cotton is attached to the inside of the top cover. Chiller vents are arranged at the front and back of the top cover, and sheet metal is arranged at the rear chiller vents to physically isolate the chiller from heat. The top wall of the top cover extends outward with a waterproof edge, and a sealing pad is sealed at the top bend of the top cover; the four corners of the top cover are respectively fixedly connected to the lifting ears for facilitating the lifting of the cabinet.

[0008] In the above technical solution, a door frame is opened at the front end of the cabinet, a sealing strip is arranged on the door frame, a front door is hinged on one side of the front end of the cabinet, and the sealing strip arranged on the door frame is squeezed to ensure the sealing in the closed state, and the front door is provided with an operation status indicator light, a virtual power plant, an emergency stop switch and a switch.

[0009] In the above technical solution, flange edges are fixedly installed around the outer edge of the front door panel, and the front door panel is connected to the cabinet body through the flange edge with fixing holes via bolts and sealing gaskets; the front door panel is installed with four explosion relief valves, a smoke sensor is installed on the top, and a water immersion sensor is installed on the bottom; an aerosol and water spray device is provided in the liquid-cooled PACK warehouse.

[0010] In the above technical solution, the liquid supply pipeline and the liquid return pipeline are connected to the chiller in the top cover through the pipeline sealing holes provided on the top surface of the cabinet; the cables required in the liquid cooling PACK compartment are introduced into the liquid cooling PACK compartment through the second cable sealing holes provided on the liquid cooling PACK compartment, and the cables required for the chiller are introduced from the liquid cooling PACK compartment into the top cover through the first cable sealing holes provided on the top surface of the cabinet and connected to the chiller.

[0011] In the above technical solution, the power cables and fire-fighting water required for the operation of the liquid-cooled energy storage cabinet are introduced into the liquid-cooled energy storage cabinet from the base.

[0012] The advantages and beneficial effects of the utility model are:

[0013] (1) The utility model installs a chiller on the top cover and divides the internal space of the cabinet into a liquid cooling PACK compartment and an electrical compartment, that is, the batteries and components are arranged in three sections: upper, middle and lower. While taking into account the convenience of operation and maintenance, the space in the height direction of the cabinet is effectively utilized, the energy density of the cabinet is improved, and the land use cost is reduced.

[0014] (2) The utility model adopts liquid cooling, which removes the heat generated by the battery by indirect contact with the battery. The specific heat capacity of liquid is greater than that of air, and it can absorb and release heat faster, which can effectively control the temperature rise of the battery. The uniformity of liquid circulation is better than that of air flow, which can ensure the uniformity of the temperature of different batteries. Therefore, the charging rate of the liquid-cooled energy storage cabinet is higher, which can ensure the stability of battery operation.

[0015] (3) The front door panel is sealed and installed at the front end of the liquid-cooled PACK bin of the utility model, and the other working surfaces of the liquid-cooled PACK bin are sealed and welded. At the same time, the cables and pipelines required in the liquid-cooled PACK bin and the top cover are introduced into the liquid-cooled PACK bin through the sealing structure to ensure the sealing of the liquid-cooled PACK bin, so that the overall protection level of the liquid-cooled PACK bin can reach IP67, and the protection level of the PACK monomer adapted to the liquid-cooled energy storage cabinet only needs to be IP20. Compared with conventional PACK, the redundant protection components and protection structure of the monomer are reduced, and the original protection space is efficiently used for battery energy storage and thermal management. While taking into account the optimal cost, the consistency of PACK products is improved. When five PACKs are configured at the same time, the overall energy density of the cabinet can be increased by about 30% compared with conventional cabinets.

[0016] (4) The whole cabinet layout scheme of the utility model is highly flexible and supports the delivery of single cabinets and N+1 cabinets based on cabinets to meet the needs of industry and commerce for energy storage systems. It can also increase the high protection range of the PACK warehouse by multiples while maintaining the whole cabinet structure, so that multiple cabinets can be quickly integrated into a liquid-cooled containerized energy storage unit. The energy density advantage is increased exponentially, meeting the needs of the power supply side and the grid side for large-capacity storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the utility model.

[0018] Figure 2 It is a rear view of the utility model.

[0019] Figure 3 It is a structural diagram of the front door panel of the PACK bin of the present utility model.

[0020] Figure 4 It is a schematic diagram of the exploded structure of the front door panel of the PACK warehouse of the present invention.

[0021] Figure 5 It is a schematic diagram of the utility model when the front door is in an open state.

[0022] In the figure, cabinet 1, liquid cooling PACK compartment 1.1, front door panel 1.11, flange edge 1.11a, sealing gasket 1.11b, drag rail 1.12, electrical compartment 1.2, front door 1.3, door frame 1.3a, sealing strip 1.3b; top cover 2, lifting ear 2.1, waterproof edge 2.2, chiller vent 2.3, sheet metal 2.4, pipeline sealing hole 2.5, first cable sealing hole 2.6; bottom bracket 3; cooling system 4, chiller 4.1, return liquid pipeline 4.2, supply liquid pipeline 4.3, operation status indicator 5, virtual power plant 6, emergency stop switch 7, switch 8, explosion relief valve 9, partition m, second cable sealing hole n.

[0023] For those of ordinary skill in the art, other related drawings can be obtained based on the above drawings without creative efforts. Detailed implementation mode

[0024] In order to enable those skilled in the art of this technology to better understand the solution of this utility model, the technical solution of this utility model will be further described below in conjunction with specific embodiments.

[0025] A liquid-cooled energy storage cabinet with an independent liquid-cooled PACK compartment, see attached Figures 1-5 , including: a cabinet body 1, a top cover 2, a bottom support 3, and a cooling system 4.

[0026] The top cover 2 is installed above the cabinet body 1, the bottom support 3 is installed below the cabinet body 1, and the cooling system 4 includes a chiller 4.1, a return liquid pipeline 4.2, a supply liquid pipeline 4.3, and a heat exchange plate.

[0027] The top cover 2 is fixedly installed above the cabinet body 1 and covers the chiller 4.1 of the cooling system 4. There is thermal insulation cotton (not shown in the figure) attached to the inner side of the top cover 2. Cold machine ventilation openings 2.3 are provided at the front and rear of the top cover 2, and sheet metal is provided at the rear cold machine ventilation opening 2.3 to conduct thermal and cold isolation for the chiller 4.1, so as to improve the working efficiency of the chiller 4.1 and reduce system energy consumption; a waterproof edge 2.2 extends outward from the top wall of the top cover 2, and a sealing gasket (not shown in the figure) is hermetically installed at the bending position of the top of the top cover 2 to avoid the influence of precipitation; lifting lugs 2.1 for facilitating the lifting of the cabinet body 1 are respectively fixedly connected at the four corner positions of the top cover 2.

[0028] A door frame 1.3a is opened at the front end of the cabinet body 1, a sealing strip 1.3b is provided on the door frame 1.3a, and a front door 1.3 is hinged to one side of the front end of the cabinet body. The front door 1.3 can be rotated and opened, and can squeeze the sealing strip 1.3b provided on the door frame 1.3a to ensure sealing in the closed state. An operating status indicator light 5, a virtual power plant 6, an emergency stop switch 7, and a switch 8 are provided on the front door 1.3; further, the operating status indicator light 5 is used to monitor whether there are abnormal operations inside the liquid-cooled energy storage cabinet, the virtual power plant 6 is used for communication between the liquid-cooled energy storage cabinet and the local power distribution, the switch 8 is used for communication between liquid-cooled energy storage cabinets, and the emergency stop switch 7 is used to quickly cut off the power supply of the liquid-cooled energy storage cabinet in case of an emergency.

[0029] Inside the cabinet body 1, its internal space is divided into a liquid-cooled PACK bin 1.1 and an electrical bin 1.2 by horizontally installing a partition board m; at the front end of the liquid-cooled PACK bin 1.1, a front door panel 1.11 is hermetically installed. Further, a flange edge 1.11a is fixedly installed around the outer edge of the front door panel 1.11. The front door panel 1.11 is connected to the cabinet body 1 through the flange edge 1.11a with fixing holes via bolts (not shown in the figure) and a gasket 1.11b, and the rest of the working surfaces of the liquid-cooled PACK bin 1.1 are hermetically welded; an aerosol and water spray device is provided in the liquid-cooled PACK bin 1.1 to provide dual fire protection; a plurality of groups of drag rails 1.12 for placing batteries (not shown in the figure) are longitudinally arranged at intervals on both side walls of the liquid-cooled PACK bin 1.1, and a locking and positioning mechanism (not shown in the figure) is provided at the position corresponding to the battery (not shown in the figure) on each group of drag rails 1.12. The return liquid pipeline 4.2 and the supply liquid pipeline 4.3 connected to the chiller 4.1 are respectively connected to the heat exchange plates on the side of the battery. Further, the return liquid pipeline 4.2 and the supply liquid pipeline 4.3 are connected to the chiller 4.1 in the top cover 2 through the pipeline sealing holes 2.5 provided on the top surface of the cabinet body 1; the cables required in the liquid-cooled PACK bin 1.1 are introduced into the liquid-cooled PACK bin 1.1 through the second cable sealing hole n provided on the liquid-cooled PACK bin 1.1, and the cables required by the chiller 4.1 are introduced from the liquid-cooled PACK bin 1.1 into the top cover 2 through the first cable sealing hole 2.6 provided on the top surface of the cabinet body 1 and connected to the chiller 4.1; four explosion relief valves 9 are installed on the front door panel 1.11, a smoke sensor (not shown in the figure) is installed on the top, and a water immersion sensor (not shown in the figure) is provided at the bottom, providing a highly reliable working environment for the batteries in the liquid-cooled PACK bin 1.1. While effectively improving the integration degree of the cabinet 1, the protection level requirements for battery monomers are reduced, and the cost reduction and efficiency increase of the product are maximally realized.

[0030] The bottom support 3 plays the roles of support, fixation and transportation. In addition, the power cables required for operation and the fire protection water are introduced into the liquid-cooled energy storage cabinet from the bottom support 3.

[0031] The battery (not shown in the figure) is installed in a PACK single-body protection bin (not shown in the figure), and the top cover of the PACK single-body protection bin is made of plastic suction molding material, and the surrounding and the bottom surface are made of metal shells.

[0032] For ease of explanation, spatial relative terms, such as "upper", "lower", "left", "right", etc., are used in the embodiments to describe the relationship of one element or feature shown in the figure with respect to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations during the use or operation of the device. For example, if the device in the figure is inverted, the element described as being "below" other elements or features will be located "above" the other elements or features. Therefore, the exemplary term "below" can include both the upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein can be interpreted accordingly.

[0033] Moreover, relative terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any actual relationship or order between these components.

[0034] The above provides an exemplary description of the present invention. It should be noted that, without departing from the core of the present invention, any simple deformation, modification, or equivalent replacement that can be made by those skilled in the art without creative efforts falls within the protection scope of the present invention.

Claims

1. A liquid-cooled energy storage cabinet with an independent liquid-cooled PACK compartment, characterized in that: Cabinet, top cover, bottom support, cooling system; The top cover is installed on the top of the cabinet, the bottom support is installed on the bottom of the cabinet, a front door sealed and connected to the cabinet is installed in front of the cabinet, and the internal space of the cabinet is divided into a liquid-cooled PACK compartment and an electrical compartment by a transversely installed partition; the front door panel is sealed and installed at the front end of the liquid-cooled PACK compartment, so that the liquid-cooled PACK compartment is in a relatively independent sealed state, and the overall protection level can reach IP67; a plurality of groups of drag rails for placing batteries are longitudinally spaced on the side walls of both sides of the liquid-cooled PACK compartment; the cooling system includes a water chiller, a liquid supply pipeline, a liquid return pipeline and a heat exchange plate; the liquid supply pipeline and the liquid return pipeline connected to the water chiller arranged in the top cover are respectively connected to the heat exchange plates on the sides of the battery; the cables and pipelines required in the liquid-cooled PACK compartment and the top cover are introduced into the interior through the sealing structure to ensure the sealing of the liquid-cooled PACK compartment.

2. According to claim 1, a liquid-cooled energy storage cabinet with an independent liquid-cooled PACK compartment is characterized in that: The top cover is fixedly installed on the top of the cabinet and covers the chiller of the cooling system. Insulation cotton is attached to the inner side of the top cover. Chiller vents are arranged at the front and rear of the top cover, and sheet metal is arranged at the rear chiller vents to physically isolate the chiller from heat. The top wall of the top cover extends outward with a waterproof edge, and a sealing pad is sealed at the top bend of the top cover; the four corners of the top cover are respectively fixedly connected to the lifting ears for facilitating the lifting of the cabinet.

3. According to claim 1, a liquid-cooled energy storage cabinet with an independent liquid-cooled PACK compartment is characterized in that: A door frame is provided at the front end of the cabinet, a sealing strip is arranged on the door frame, a front door is hinged on one side of the front end of the cabinet, and the sealing strip arranged on the door frame can be squeezed to ensure the sealing in a closed state, and an operation status indicator light, a virtual power plant, an emergency stop switch and a switch are arranged on the front door.

4. The liquid-cooled energy storage cabinet with an independent liquid-cooled PACK compartment according to claim 1, characterized in that: The outer edge of the front door panel is fixedly installed with a flange edge around it, and the front door panel is connected to the cabinet body through a flange edge with fixing holes via bolts and sealing gaskets; the front door panel is installed with four explosion relief valves, a smoke sensor is installed on the top, and a water immersion sensor is installed on the bottom; an aerosol and water spray device is provided in the liquid cooling PACK warehouse.

5. The liquid-cooled energy storage cabinet with an independent liquid-cooled PACK compartment according to claim 1, characterized in that: The liquid supply pipeline and the liquid return pipeline are connected to the chiller in the top cover through the pipeline sealing holes arranged on the top surface of the cabinet; the cables required in the liquid cooling PACK warehouse are introduced into the liquid cooling PACK warehouse through the second cable sealing holes arranged on the liquid cooling PACK warehouse, and the cables required for the chiller are introduced from the liquid cooling PACK warehouse into the top cover through the first cable sealing holes arranged on the top surface of the cabinet to be connected to the chiller.

6. The liquid-cooled energy storage cabinet with an independent liquid-cooled PACK compartment according to claim 1, characterized in that: The power cables and fire-fighting water required for the operation of the liquid-cooled energy storage cabinet are introduced into the liquid-cooled energy storage cabinet from the bottom support.

Images