KR102283829B1 - Energy storage system based on corrugate cooling fin - Google Patents

Abstract

The present invention provides a corrugated cooling fin-based energy storage system. As described above, the corrugated cooling fin-based energy storage system according to the present invention is an ESS (Energy Storage) in which a large-capacity battery is integrated and arranged by refrigerant supplied to the bottom, side wall, and ceiling of the corrugated or protruding cooling fins. System) has the technical feature of simultaneously achieving the simplification of the device configuration for cooling and the increase of the cooling efficiency by providing a structure in which the container of the system is cooled.

Description

Energy storage system based on corrugate cooling fin

The present invention relates to a corrugated cooling fin-based energy storage system, and more specifically, a large-capacity battery in which a large-capacity battery is integrated and arranged by refrigerant supplied to a bottom, side wall, and ceiling of a structure in which corrugations or cooling fins are protruded. It relates to a corrugated cooling fin-based energy storage system in which the simplification of the device configuration for cooling and the increase of cooling efficiency can be simultaneously achieved by providing a structure in which the container of the ESS (Energy Storage System) is cooled.

In general, ESS refers to a storage device that stores excess power in a power plant and transmits it when power is temporarily insufficient. It is increasingly used for peak power reduction. In addition, in recent years, as interest in new and renewable energy has rapidly increased due to imbalance in power supply and demand, the development of technology to store electricity produced by using renewable energy through ESS and use it at the required time continues. is being done

In particular, the ESS market continues to grow as the installation of ESS in newly constructed public buildings has become compulsory, and the installation of ESS in private buildings is increasing in order to save energy.

A typical ESS accommodates a battery that stores energy in a battery rack, a BMS that manages the battery, and a PCS that converts power, and operates by accommodating these battery racks in a certain space. Therefore, the temperature of the ESS system rises due to a large amount of heat generated from a plurality of batteries, and especially in summer, even a small overheating has a very high fire risk.

However, cooling of the ESS system still only cools the space accommodating the ESS system or the entire housing in which the battery is accommodated using general cooling equipment, so efficient cooling is not achieved, and a large amount of power is consumed for the operation of the cooling system. there was a problem with

Republic of Korea Patent Publication No. 10-2020569 "ESS system including cooling function" Republic of Korea Patent Publication No. 10-1889760 "Cooling device for energy storage system"

Therefore, the present invention improves the problems of the prior art, and the bottom, side walls, and ceilings constituting the container of the ESS in which large-capacity batteries including lithium-ion batteries are integrated are wrinkled or the cooling fins are protruded. , the circulation pipe/casing of the air-cooled cooler/water-cooled cooler is arranged while surrounding the outer surfaces of the bottom, sidewall, and ceiling of the container to provide a structure in which supply and circulation of refrigerant are made, thereby simplifying the device configuration for cooling An object of the present invention is to provide a new type of corrugated cooling fin-based energy storage system that can increase cooling efficiency, thereby reducing power consumption required for cooling.

In order to achieve the above object, a corrugated cooling fin-based energy storage system according to an embodiment of the present invention is a closed inner space 110 surrounded by a bottom body 120 , a side wall body 130 , and a ceiling body 140 . ), the inner space 110 is partitioned by the side wall 130, the container 100 including an independent first space and a second space; a plurality of batteries 200 installed in the first space and fixed in contact with both the inner surface of the bottom body 120 and the inner surface of the side wall 130; a power converter system (PCS) 800 installed in the second space; a transformer 900 installed in the second space; an air conditioner 400 installed in the inner space 110, generating cold air and blowing cold air into the inner space 110; a cooling device 300 installed at a set position and supplying a refrigerant to the outer surfaces of the bottom body 120 , the side wall body 130 , and the ceiling body 140 ; and a controller 600 for controlling the operation of the cooling device 300 and the air conditioner 400; Cooling fins 152 made of a vertical body are made of any one selected from a cooling fin forming facet 150 and a corrugated corrugated facet body 160 in which the cooling fins 152 are protruded at set intervals, and the air conditioner 400 is connected to the first space and Each is provided in the second space to independently cool the first space and the second space, and the cooling temperature and airflow amount are adjusted by the control of the controller 600 based on the temperature information of the first space and the second space. characterized in that
In addition, the entire inner surface of the zenith body 140 is selected from the cooling fin forming facet 150 and the corrugated corrugated facet 160 in which the cooling fins 152 made of a vertical facet are formed to protrude at set intervals. characterized by being made.
And, in the cooling device 300, any one selected from the cooling air circulation pipe 320a and the cooling air casing 330a is the outer surface of the bottom body 120, the side wall body 130, and the ceiling body 140. an air-cooled cooler (300a) which is disposed to surround the supply and circulation of cooling air; Any one selected from the cooling liquid circulation pipe 320b and the cooling liquid casing 330b is disposed to surround the outer surfaces of the bottom body 120, the side wall body 130, and the ceiling body 140, so that the cooling solution is supplied and circulated. Water-cooled cooler (300b); It is characterized in that any one selected from among.
In addition, the cooling fin forming facet 150 has a structure in which a plurality of cooling fins 152 are protruded at set intervals in parallel to the surface of the flat base plate body 151, and the corrugated facet body 160 is It is characterized in that the horizontal upper surface unit 161 and the lower surface unit 162 is made of a square wave shape structure that is connected by the side unit (163).
And, the temperature sensor 500 arranged at set intervals in the inner space 110 of the container 100 to measure the temperature for each area of the inner space 110 and provide the measured temperature information to the controller 600 . ); characterized in that it further comprises.

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According to the corrugated cooling fin-based energy storage system according to the present invention, a large-capacity battery is integrated by the refrigerant (cold air, coolant, etc.) supplied to the bottom, side walls, and ceiling surfaces of the corrugated or protruding cooling fins. Since the disposed ESS container is cooled, the device configuration for cooling is simplified and cooling efficiency is increased, thereby reducing power consumption required for cooling.

1 and 2 are diagrams for schematically showing the configuration of a corrugated cooling fin-based energy storage system according to an embodiment of the present invention;
3 is a view for showing a cooling fin formed facet according to an embodiment of the present invention;
Figure 4 is a view for showing a wrinkled facet according to an embodiment of the present invention;
5 (a) and (b) are views for showing the configuration of an air-cooled cooler according to an embodiment of the present invention;
6 (a) and (b) are views for showing the configuration of a water-cooled cooler according to an embodiment of the present invention;
7 is a view for showing a control configuration of a corrugated cooling fin-based energy storage system according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings 1 to 7 . On the other hand, in the drawings and detailed descriptions, general ESS (Energy Storage System), containers, batteries, lithium ion batteries, air-cooled coolers, water-cooled coolers, air conditioners, etc. illustrate the configuration and operation that can be easily known by those in the field References have been abbreviated or omitted. In particular, in the drawings and detailed descriptions, detailed descriptions and illustrations of specific technical configurations and actions of elements not directly related to the technical features of the present invention are omitted, and only the technical configurations related to the present invention are briefly illustrated or described. did.

The present invention is a technology applied to an energy storage system (ESS) in which a large-capacity battery using a lithium-ion battery, etc. is integrated and arranged, and a corrugated cooling fin-based energy storage system (1) according to an embodiment of the present invention 1 has a configuration including a container 100 , a plurality of batteries 200 , a cooling device 300 , an air conditioner 400 , a temperature sensor 500 , and a controller 600 .

The container 100 has a sealed inner space 110 surrounded by a bottom surface 120, a side wall body 130, and a ceiling surface 140 as in FIGS. 1 and 2, and the inner space 110 is It is divided into a battery arrangement area 110a, a BMS arrangement area 110b, a PCS arrangement area 110c, a transformer arrangement area 110d, a PMS arrangement area 110e, and the like. The battery arrangement area 110a is an area in which a plurality of batteries 200 are installed, the BMS arrangement area 110b is an area in which a battery monitoring system (BMS) 700 is installed, and the PCS arrangement area 110c is a PCS ( The power converter system) 800 is installed, the transformer arrangement area 110d is an area where the transformer 900 is installed, and the PMS arrangement area 110e is an area where the PMS (power management system) 1000 is installed. or. In addition, the fire extinguishing device 1100 may be installed in the inner space 110 of the container 100 .

The bottom body 120 , the side wall body 130 , and the ceiling body 140 are made of a metal material having high thermal conductivity to conduct heat generated from the battery 200 and radiate it to the outside.

In the container 100, the inner surface of the bottom surface 120 and the side wall 130 in contact with the battery 200 may be formed of a cooling fin-formed surface 150 or a wrinkle-formed surface 160. . Through this, the heat conduction area from the battery 200 is enlarged, so that the cooling efficiency can be increased. It is possible to minimize material waste by configuring only the cooling fin forming facet 150 or the wrinkle forming facet body 160 .

The cooling fin forming facet 150 has a structure in which a plurality of cooling fins 152 are protruded at set intervals in parallel to the surface of the flat base plate body 151 as shown in FIG. 3 . The cooling fins 152 are made of a vertical parallelepiped.

The pleated facet 160 is wrinkled as in FIG. 4 , and in particular, the pleated facet 160 according to an embodiment of the present invention has a horizontal upper surface unit 161 and a lower surface unit 162 are side units 163 . ), which is connected by a square wave shape structure.

Alternatively, the container 100 may include the entire inner surface of the bottom face 120 , the side wall body 130 , and the ceiling face 140 , with the cooling fin forming facet 150 or the wrinkle forming facet body 160 . In this case, it is possible to maximize the cooling efficiency.

The plurality of batteries 200 are installed in the battery arrangement area 110a of the container 100, and are fixed in contact with the inner surface of the bottom body 120 and the inner surface of the side wall 130 to conduct heat. . Since a lithium-ion battery that can be used as a battery of an ESS is vulnerable to heat, the corrugated cooling fin-based energy storage system 1 of the present invention that implements high cooling efficiency can be effectively applied to an ESS using a lithium-ion battery. .

The cooling device 300 is installed at a set position to supply the refrigerant to the outer surfaces of the bottom body 120 , the side wall body 130 , and the ceiling body 140 . The cooling device 300 may be disposed outside the container 100 . As the refrigerant, low-temperature cooling air, low-temperature cooling liquid, or the like may be used. Correspondingly, the cooling device 300 may be formed of an air-cooled cooler 300a or a water-cooled cooler 300b.

The air-cooled cooler 300a has a cooling air circulation pipe 320a connected to the cold air generating module 310a as shown in FIG. It may be arranged while surrounding the surface to have a configuration in which cooling air is supplied and circulated. Here, the cooling air circulation pipe 320a may be arranged in a structure that surrounds the outer surfaces of the bottom body 120 , the side wall body 130 , and the ceiling body 140 in a mesh pattern, respectively. In addition, the air-cooled cooler 300a has a cooling air casing 330a connected to the cold air generating module 310a as shown in FIG. It may be arranged while surrounding the surface to have a configuration in which cooling air is supplied and circulated. The cooling air casing 330a receives cooling air from the supply pipe 340a connected to the cold air generating module 310a, and discharges the cooling air through the return pipe 360a of the cold air generating module 310a. On-off valves 350a and 370a are installed in the supply pipe 340a and the recovery pipe 360a.

The water-cooled cooler 300b also has a cooling liquid circulation pipe 320b connected to the cooling liquid generating module 310b as shown in FIG. It may be configured to surround the supply and circulation of the cooling liquid. Here, the cooling fluid circulation pipe 320b may be disposed in a structure that surrounds the outer surfaces of the bottom body 120 , the side wall body 130 , and the ceiling body 140 in a mesh pattern, respectively. In addition, in the water-cooled cooler 300b, the cooling liquid casing 330b connected to the cooling liquid generating module 310b as shown in FIG. It may be configured to surround and to supply and circulate the cooling liquid. The cooling liquid casing 330b receives the cooling liquid from the supply pipe 340b connected to the cooling liquid generating module 310b, and discharges the cooling liquid through the recovery pipe 360b of the cooling liquid generating module 310b. On/off valves 350b and 370b are installed in the supply pipe 340b and the return pipe 360b.

On the other hand, the entire outer surface of the bottom surface body 120, the side wall body 130, and the ceiling body 140 constituting the container 100 is composed of the cooling fin body 150 or the corrugation body 160, and the cooling device ( 300) by increasing the contact area with the refrigerant supplied from the cooling efficiency can be maximized.

The air conditioner 400 is installed in the inner space 110 of the container 100 , and generates cold air and blows the cold air into the inner space 110 so that the cold air convects the inner space 110 . Since the inner surface of the bottom surface body 120 constituting the container 100 and the inner surface of the side wall body 130 are formed of the cooling fin body 150 or the corrugated face body 160 , the inner space of the container 100 . It can be rapidly cooled by the cold air of the air conditioner 400 convecting the 110 .

The temperature sensor 500 is disposed at set intervals in the inner space 110 of the container 100 as shown in FIG. 1 to measure the temperature for each area of the inner space 110 .

The controller 600 controls the operation of the cooling device 300 and the air conditioner 400 according to the temperature information for each area of the inner space 110 input from the temperature sensor 500 as shown in FIG. 7 . That is, the controller 600 adjusts the refrigerant flow rate and the refrigerant circulation speed of the cooling device 300 , the cooling temperature of the air conditioner 400 , the airflow rate/blowing speed, etc. according to the temperature information for each area of the internal space 110 .

In addition, when the cooling air circulation pipe 320a and the cooling liquid circulation pipe 320b of the cooling device 300 are formed of a plurality of independent branch pipes, and a plurality of air conditioners 400 are arranged for each area of the inner space 110 , , the controller 600 may differently perform operation control for each cooling air circulation pipe 320a and each cooling liquid circulation pipe 320b or differently perform operation control of the air conditioner 400 for each area.

In the corrugated cooling fin-based energy storage system 1 according to the embodiment of the present invention configured as described above, the bottom, side walls, and ceilings constituting the container of the ESS in which large-capacity batteries including lithium ion batteries are integrated are corrugated. This is formed or the cooling fins are protruding, and the circulation pipe/casing of the air-cooled cooler/water-cooled cooler is disposed while surrounding the outer surface of the bottom, sidewall, and ceiling of the container to provide a structure in which the supply and circulation of the refrigerant are made. , while simplifying the device configuration for cooling, cooling efficiency can be increased, and thus, power consumption required for cooling can be reduced.

As described above, although the corrugated cooling fin-based energy storage system according to the embodiment of the present invention has been illustrated according to the above description and drawings, this is merely an example and within the scope not departing from the technical spirit of the present invention. It will be appreciated by those skilled in the art that various changes and modifications are possible.

1: Corrugated cooling fin-based energy storage system
100: container
110: inner space
110a: battery placement area
110b: BMS placement area
110c: PCS arrangement area
110d : Transformer placement area
110e: PMS placement area
120: bottom facet
130: side wall
140: zenithahedron
150: cooling fin forming face
151: base plate
152: cooling fin
160: wrinkle-forming tetrahedron
161: top unit
162: lower unit
163: side unit
200: battery
300: cooling device
300a : air cooled cooler
300b : Water Cooled Chiller
310a: cold air generation module
310b: cooling liquid generation module
320a: cooling air circulation pipe
320b: coolant circulation pipe
` 330a : Cooling air casing
330b: coolant casing
340a, 340b: supply pipe
350a, 350b, 370a, 370b : on/off valve
360a. 360b: return pipe
400 : air conditioner
500: temperature sensor
600: controller
700: BMS
800: PCS
900: transformer
1000 : PMS
1100: fire extinguisher

Claims (5)

It has a closed inner space 110 surrounded by the bottom surface 120 , the side wall body 130 , and the ceiling body 140 , wherein the inner space 110 is partitioned by the side wall body 130 and is an independent first a container 100 including a space and a second space;
a plurality of batteries 200 installed in the first space and fixed in contact with both the inner surface of the bottom body 120 and the inner surface of the side wall 130;
a power converter system (PCS) 800 installed in the second space;
a transformer 900 installed in the second space;
an air conditioner 400 installed in the inner space 110, generating cold air and blowing cold air into the inner space 110;
a cooling device 300 installed at a set position and supplying a refrigerant to the outer surfaces of the bottom body 120 , the side wall body 130 , and the ceiling body 140 ; and
It includes; a controller 600 for controlling the operation of the cooling device 300 and the air conditioner 400;
The inner surface of the bottom surface 120 and the entire inner surface of the side wall body 130 are formed with cooling fin-forming surfaces 150 in which vertical cooling fins 152 protrude at set intervals and corrugations are formed. Consists of any one selected from the facet 160,
The air conditioner 400 is provided in the first space and the second space, respectively, to independently cool the first space and the second space, and the controller 600 based on the temperature information of the first space and the second space ), a corrugated cooling fin-based energy storage system, characterized in that the cooling temperature and the amount of air blown are controlled by the control. The method of claim 1,
The entire portion of the inner surface of the ceiling body 140 is made of any one selected from the cooling fin forming facet 150 and the corrugated corrugated facet face 160 in which the cooling fins 152 of the vertical facet are formed to protrude at set intervals. A corrugated cooling fin-based energy storage system. The method of claim 1,
The cooling device 300,
Any one selected from the cooling air circulation pipe 320a and the cooling air casing 330a is disposed while surrounding the outer surfaces of the bottom body 120, the side wall body 130, and the ceiling body 140 to supply and an air-cooled cooler 300a circulating; Any one selected from the cooling liquid circulation pipe 320b and the cooling liquid casing 330b is disposed to surround the outer surfaces of the bottom body 120, the side wall body 130, and the ceiling body 140, so that the cooling solution is supplied and circulated. Water-cooled cooler (300b); Corrugated cooling fin-based energy storage system, characterized in that any one selected from. The method of claim 1,
The cooling fin forming facet 150 has a structure in which a plurality of cooling fins 152 are protruded at set intervals in parallel to the surface of the flat base plate body 151,
The corrugated facet 160 is a corrugated cooling fin-based energy storage system, characterized in that it has a square wave shape structure in which a horizontal upper surface unit 161 and a lower surface unit 162 are connected by a side unit 163 . The method of claim 1,
a temperature sensor 500 disposed at set intervals in the inner space 110 of the container 100 to measure the temperature for each area of the inner space 110 and provide the measured temperature information to the controller 600; Corrugated cooling fin-based energy storage system, characterized in that it further comprises.

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