CN218472066U - Concentrated liquid cooling indirect heating equipment and battery energy storage power station - Google Patents
Concentrated liquid cooling indirect heating equipment and battery energy storage power station Download PDFInfo
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- CN218472066U CN218472066U CN202222216184.8U CN202222216184U CN218472066U CN 218472066 U CN218472066 U CN 218472066U CN 202222216184 U CN202222216184 U CN 202222216184U CN 218472066 U CN218472066 U CN 218472066U
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Abstract
The utility model provides a whole concentrated liquid cooling indirect heating equipment and battery energy storage power station relates to battery energy storage power station cooling indirect heating equipment field. The equipment comprises a refrigerant circulating system and a water circulating system, wherein the refrigerant circulating system is used for supplying cold or heat for the water circulating system, the water circulating system comprises a water supply main pipe and a water return main pipe, the water supply main pipe is connected with a plurality of water supply branch pipes, the water return main pipe is connected with a plurality of water return branch pipes, the water circulating system is used for configuring at least one water supply branch pipe and at least one water return branch pipe for each of a plurality of battery containers of a battery energy storage power station, and the water supply branch pipe and the water return branch pipe corresponding to each battery container are communicated. The equipment takes all or a plurality of battery containers of the battery energy storage power station as a whole, so that cooling water after heat exchange with the battery containers is concentrated to exchange heat with the refrigerant circulating system, the equipment has the advantages of small quantity of components, simple structure, convenience and suitability for large-scale concentrated arrangement, convenience in operation and maintenance, and lower investment cost and operation and maintenance cost.
Description
Technical Field
The utility model relates to a battery energy storage power station cooling indirect heating equipment's technical field particularly, relates to a whole concentrated liquid cooling indirect heating equipment and battery energy storage power station.
Background
In order to ensure that the batteries in the battery container are within a suitable temperature range in the battery energy storage power station, the batteries need to be cooled or heated. In the prior art, a liquid cooling or air cooling mode is usually adopted to cool and exchange heat for the battery container. The liquid cooling heat exchange equipment of the battery energy storage power station comprises a plurality of groups of liquid cooling heat exchange devices, each group of liquid cooling heat exchange devices carries out cooling heat exchange on a single battery container, and the whole liquid cooling heat exchange equipment is large in component part number, complex in structure and higher in investment, operation and maintenance cost.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide a liquid cooling indirect heating equipment wholly concentrates to solve the liquid cooling indirect heating equipment investment fortune that the battery energy storage power station that exists among the prior art maintenance with high costs technical problem.
The utility model provides an integrally concentrate liquid cooling indirect heating equipment is applied to battery energy storage power station, equipment includes refrigerant circulation system and water circulation system, refrigerant circulation system is used for doing water circulation system supplies cold volume or heat, water circulation system is including the female pipe of water supply and the female pipe of return water, the female union coupling of water supply has a plurality of water supply branch pipes, the female union coupling of return water has a plurality of return water branch pipes, water circulation system does every in a plurality of battery containers of battery energy storage power station all disposes at least one water supply branch pipe and at least one return water branch pipe, and every battery container corresponds water supply branch pipe with return water branch pipe intercommunication.
Further, the water circulation system is provided with one water supply branch pipe and one water return branch pipe for each battery container.
Furthermore, the water supply branch pipe is provided with a three-way valve, two interfaces of the three-way valve are connected with the water supply branch pipe, and the third interface is connected with the corresponding return water branch pipe or the return water main pipe; the water return branch pipe is further provided with a check valve, the check valve is arranged on the water return branch pipe and along the flow direction of cooling water, and the check valve is located at the upstream of the joint of the three-way valve and the water return branch pipe.
Furthermore, the water circulation system is a closed water circulation system, and the closed water circulation system comprises a circulating water pump for driving closed water circulation.
Furthermore, the water circulation system also comprises a water replenishing tank, and the water replenishing tank is arranged in the water return main pipe or the water supply main pipe.
Further, the refrigerant circulation system comprises a compressor for compressing the refrigerant, and the compressor is a screw compressor.
Further, the refrigerant circulating system comprises a first heat exchanger and a second heat exchanger, when the refrigerant circulating system performs refrigeration, the first heat exchanger is used for radiating heat to the environment, and the second heat exchanger is used for supplying cold energy to the water circulating system; when the refrigerant circulating system heats, the second heat exchanger is used for supplying heat to the water circulating system, and the first heat exchanger is used for absorbing heat from the environment.
Further, the first heat exchanger is an air-cooled heat exchanger.
Further, the second heat exchanger is a shell-and-tube heat exchanger, the tube side of the shell-and-tube heat exchanger is used for circulating a refrigerant, and the shell side of the shell-and-tube heat exchanger is used for circulating cooling water.
The utility model provides an integral concentrated liquid cooling indirect heating equipment can produce following beneficial effect:
the utility model provides an integral centralized liquid cooling heat exchange equipment, which takes all battery containers or a plurality of battery containers of a battery energy storage power station as a whole, and enables cooling water after heat exchange with each battery container to be centralized for heat exchange with a refrigerant circulating system by arranging a water supply main pipe, a water supply branch pipe, a water return branch pipe and a water return main pipe, thereby greatly reducing the number of components of the liquid cooling heat exchange equipment of the battery energy storage power station, simplifying the structure of the whole equipment, and being very convenient and suitable for large-scale centralized arrangement; the number of the components is small, the equipment investment cost can be reduced, the equipment operation reliability is improved, the equipment operation reliability is high, the failure rate of the equipment is low, and even if the equipment fails, the equipment is easy to maintain due to the small number of the components and the simple structure of the equipment, so the operation and maintenance cost of the equipment is low. To sum up, the utility model provides a whole concentrated liquid cooling indirect heating equipment, component part is small in quantity, simple structure, is convenient for and is suitable for the maximization to concentrate and arranges, and is convenient for the fortune dimension, and investment cost and fortune dimension cost all lower.
A second object of the utility model is to provide a battery energy storage power station to solve the liquid cooling indirect heating equipment investment fortune that exists among the prior art maintenance with high costs technical problem.
The utility model provides a battery energy storage power station, concentrate liquid cooling indirect heating equipment including a plurality of battery containers and foretell whole. The battery energy storage power station has all the advantages of the integral concentrated liquid cooling heat exchange equipment, and therefore, the description is omitted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is one of schematic structural diagrams of an integrated concentrated liquid cooling heat exchange device according to an embodiment of the present invention;
fig. 2 is a second schematic structural view of the overall concentrated liquid-cooling heat exchange device according to the embodiment of the present invention.
Description of reference numerals:
100-a refrigerant cycle system; 110-a compressor; 120-four-way valve; 130-a first heat exchanger; 140-an electronic expansion valve; 150-a second heat exchanger;
200-a water circulation system; 210-a circulating water pump; 220-water supply main pipe; 221-water supply branch pipe; 222-a three-way valve; 230-a water return main pipe; 231-return branch pipe; 232-check valve; 240-water replenishing tank;
300-battery container.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides an integral concentrated liquid cooling heat exchange device, which is applied to a battery energy storage power station, as shown in fig. 1 and fig. 2, the device comprises a refrigerant circulation system 100 and a water circulation system 200, the refrigerant circulation system 100 is used for supplying cold or heat for the water circulation system 200, the water circulation system 200 comprises a water supply main pipe 220 and a water return main pipe 230, the water supply main pipe 220 is connected with a plurality of water supply branch pipes 221, the water return main pipe 230 is connected with a plurality of water return branch pipes 231, the water circulation system 200 is provided with at least one water supply branch pipe 221 and at least one water return branch pipe 231 for each of a plurality of battery containers 300 of the battery energy storage power station, and the water supply branch pipe 221 and the water return branch pipe 231 corresponding to each battery container 300 are communicated.
In the integrated concentrated liquid cooling heat exchange device provided by the embodiment, all the battery containers 300 or a plurality of the battery containers 300 of the battery energy storage power station are taken as a whole, and the water supply main pipe 220, the water supply branch pipes 221, the water return branch pipes 231 and the water return main pipe 230 are arranged, so that cooling water after heat exchange with each battery container 300 is concentrated to exchange heat with the refrigerant circulation system 100, the number of components of the liquid cooling heat exchange device of the battery energy storage power station is greatly reduced, the structure of the whole device is simplified, and the integrated concentrated liquid cooling heat exchange device is very convenient and suitable for large-scale concentrated arrangement; the number of the components is small, the equipment investment cost can be reduced, the equipment operation reliability is improved, the equipment operation reliability is high, the failure rate of the equipment is low, and even if the equipment fails, the equipment is easy to maintain due to the small number of the components and the simple structure of the equipment, so the operation and maintenance cost of the equipment is low. In conclusion, the integral concentrated liquid cooling heat exchange equipment provided by the embodiment has the advantages of small number of components, simple structure, convenience for large-scale concentrated arrangement, convenience for operation and maintenance, and lower investment cost and operation and maintenance cost.
Specifically, in the present embodiment, the refrigerant is selected according to the battery operating temperature range, and may be selected from commonly used R22 (i.e., freon-22) and the like.
More specifically, in the present embodiment, all the battery containers 300 of one battery energy storage power station are used as a whole for cooling and heat exchange. Of course, in other embodiments of the present application, the partial battery container 300 of a battery energy storage power station may be taken as a whole, for example: divide into two parts with whole battery container 300 of a battery energy storage power station, the two parts adopt the whole concentrated liquid cooling indirect heating equipment that one set of this embodiment provided respectively, can greatly reduce investment fortune dimension cost equally.
More specifically, in the present embodiment, as shown in fig. 2, the water circulation system 200 is provided with one water supply branch pipe 221 and one water return branch pipe 231 for each battery container 300. So set up, the structure to every battery container 300 required setting is very simple to control is also fairly simple, and operational reliability is high, the fault rate is low, and equipment easy to maintain, long service life, and then can reduce the holistic investment fortune maintenance cost of equipment. Of course, in other embodiments of the present application, a plurality of water supply branch pipes 221 and a plurality of water return branch pipes 231 may also be configured for a single battery container 300, for example: two water supply branch pipes 221 and two water return branch pipes 231 are provided for one battery container 300 to expand the temperature control range of the battery container 300.
More specifically, in the present embodiment, as shown in fig. 2, the water supply branch pipe 221 is provided with a three-way valve 222, two of the interfaces of the three-way valve 222 are connected to the water supply branch pipe 221, and the third interface is connected to the corresponding water return branch pipe 231; the return branch pipe 231 is further provided with a check valve 232, the check valve 232 is arranged on the return branch pipe 231, and the check valve 232 is located upstream of a connection position of the three-way valve 222 and the return branch pipe 231 along the flow direction of the cooling water. With this arrangement, when the flow rate of the cooling water is constant and the temperature of the cooling water is constant, the flow rate of the cooling water flowing into the corresponding battery container 300 can be controlled by controlling the flow rate of the cooling water directly flowing into the return branch pipe 231 or the return main pipe 230, and further, the amount of cooling energy or heat energy supplied to the corresponding battery container 300 can be controlled.
It should be noted here that in other embodiments of the present application, the third interface of the electronic three-way valve 222 may also be connected to the water return main pipe 230.
Specifically, in the present embodiment, the water circulation system 200 is a closed water circulation system, and the closed water circulation system includes a circulating water pump 210 for driving the closed water circulation. So set up, cooling water can recycle, and whole equipment is very low to the dependence of water source, receives the restriction of water source minimum to can greatly enlarge this whole application scope of concentrating liquid cooling indirect heating equipment.
Specifically, in the embodiment, as shown in fig. 2, the water circulation system 200 further includes a water replenishing tank 240, and the water replenishing tank 240 is disposed in the water supply main pipe 220 and is used for replenishing cooling water into the water supply main pipe 220 so as to maintain the total amount of cooling water in the whole water circulation system 200 in a sufficient state.
It should be noted that, in other embodiments of the present application, the water replenishing tank 240 may be further disposed in the water returning main pipe 230, and is configured to replenish the cooling water into the water returning main pipe 230, and also maintain the total amount of cooling water in the whole water circulation system 200 in a sufficient state.
It should be noted that, in other embodiments of the present application, the cooling water is not limited to closed water, but may be open water under the condition that the water source is sufficient.
Specifically, in the present embodiment, as shown in fig. 1, the refrigerant cycle system 100 includes a compressor 110 for compressing the refrigerant, and preferably, the compressor 110 may be a screw compressor. The screw compressor has the advantages of wide industrial application, mature and reliable technology, long service life, simple operation and maintenance and low operation and maintenance cost.
Specifically, in the present embodiment, as shown in fig. 1, the refrigerant cycle system 100 includes a first heat exchanger 130 and a second heat exchanger 150, when the refrigerant cycle system 100 performs refrigeration, the first heat exchanger 130 is used for dissipating heat to the environment, and the second heat exchanger 150 is used for supplying cold energy to the water cycle system 200; when the refrigerant cycle system 100 is heating, the second heat exchanger 150 is used to supply heat to the water cycle system 200, and the first heat exchanger 130 is used to absorb heat from the environment.
More specifically, in the present embodiment, the first heat exchanger 130 is an air-cooled heat exchanger. For example, the first heat exchanger 130 may be a finned tube, with the refrigerant being piped. In this arrangement, when the refrigerant cycle system 100 performs refrigeration, the first heat exchanger 130 cools the high-temperature and high-pressure refrigerant compressed by the compressor 110 in a forced air cooling manner; when the refrigerant cycle system 100 heats, the first heat exchanger 130 absorbs heat from the air to heat the refrigerant, and is not limited by a water source, so that water can be saved.
More specifically, in the present embodiment, the refrigerant cycle system 100 may further include a fan for accelerating air circulation around the first heat exchanger 130, so as to improve heat exchange efficiency between the first heat exchanger 130 and the air.
It should be noted that, in other embodiments of the present application, the first heat exchanger 130 is not limited to an air-cooled heat exchanger, that is, the "environment" exchanging heat with the first heat exchanger 130 is not limited to air, and a liquid-cooled heat exchanger may also be adopted, for example: the temperature of the daily use water, etc. may be adjusted using the heat or cold of the refrigerant in the first heat exchanger 130, and at this time, the "environment" exchanging heat with the first heat exchanger 130 is the daily use water.
Specifically, in this embodiment, the second heat exchanger 150 is a shell-and-tube heat exchanger, a tube side of the shell-and-tube heat exchanger is used for circulating the refrigerant, and a shell side of the shell-and-tube heat exchanger is used for circulating the cooling water. Under the arrangement mode, the refrigerant flowing through the second heat exchanger 150 is in an environment surrounded by cooling water, so that the heat exchange efficiency between the refrigerant and the second heat exchanger can be improved, and the utilization rate of heat or cold of the refrigerant can be improved.
As shown in fig. 1, in the present embodiment, the refrigerant cycle system 100 includes: in the compressor 110, the four-way valve 120, the first heat exchanger 130, the electronic expansion valve 140, and the second heat exchanger 150, when cooling, as indicated by arrows on the line in fig. 1, the refrigerant circulation circuit is: the compressor 110, the four-way valve 120, the first heat exchanger 130, the electronic expansion valve 140, the first heat exchanger 130, the four-way valve 120 and the compressor 110 are arranged, that is, a refrigerant enters the screw compressor and is compressed into high-temperature and high-pressure gas, then enters the air-cooled heat exchanger to be forcibly cooled, enters the shell-and-tube heat exchanger after being throttled by the electronic expansion valve 140 to absorb heat and evaporate (output cold energy to closed water externally), and the gas coming out of the shell-and-tube heat exchanger returns to the screw compressor again to continue the next circulation.
In heating, as shown by the solid arrows beside the pipeline in fig. 1, the circulation circuit of the refrigerant is: the refrigerant enters the screw compressor and is compressed into high-temperature and high-pressure gas, the gas enters the shell-and-tube heat exchanger through the four-way valve 120 and is cooled (heat is output to closed water), the gas is throttled through the electronic expansion valve 140 and enters the air-cooled heat exchanger to absorb ambient heat, and the ambient heat is absorbed by the screw compressor after vaporization, so that a cycle is completed.
And the closed water circulation process, as shown in fig. 2, is: the closed water flowing out of the water side heat exchanger (i.e., the second heat exchanger 150) of the refrigerant circulation system 100 is delivered to each battery container 300 through the circulating water pump 210, and according to different loads, the closed water flow entering each battery container 300 is adjusted through the electronic three-way valve 222, one path of closed water returns to the water return main pipe 230, the other path of closed water returns to the water return main pipe 230 after entering the battery container 300 for heat exchange, and the closed water flow in the water return main pipe 230 meets the water side heat exchanger, thereby completing a cycle.
In addition, regarding the method for controlling the temperature of the battery module in the battery container 300 of the battery energy storage power station by using the integrated concentrated liquid cooling heat exchange device provided in this embodiment, the method can be summarized as follows:
the control target parameter is the deviation between the actual temperature of the battery module in the battery container 300 and a set value, and is mainly controlled by adjusting the temperature and the flow of the closed water entering the battery container 300.
(1) Closed water temperature control:
the refrigerating and heating capacities are adjusted by controlling the screw compressor, and stepless adjustment can be performed by changing the position of a slide valve of the screw compressor and adjusting the rotating speed in a combined manner. The control target parameter is the deviation of the actual outlet temperature of the closed water and a set value, and the rotating speed of the screw compressor and the position of the slide valve are adjusted according to the temperature difference. When the compressor is under heavy load, the slide valve is controlled to be closed completely, and the rotating speed of the compressor is adjusted only through the frequency conversion device to control the temperature difference. With the reduction of the load, firstly, the rotating speed of the compressor is reduced through the frequency conversion device until the rotating speed is the lowest; thereafter, as the load continues to decrease, the slide valve is gradually opened, returning a portion of the compressor outlet gas to the inlet. By adopting the mode of changing the position of the slide valve of the compressor and jointly adjusting the rotating speed, the higher heat efficiency of the compressor can be kept in a larger load change range, so that the power consumption of the refrigerant circulating system 100 is reduced, and the service power consumption is reduced.
(2) Closed water flow regulation:
the closed water flow entering each battery container 300 is adjusted through the electronic three-way valve 222 on the water supply branch pipe 221 corresponding to each battery container 300, and the redundant closed water flows back.
In a word, the overall concentrated liquid cooling heat exchange device provided by the embodiment can achieve the purpose of stably controlling the temperature of the battery module in the battery container 300 in a mode of adjusting the temperature and the flow of the closed water; the method is applicable to the liquid cooling heat exchange modes in the battery modules in different forms, such as tube plate type and immersion type heat exchange modes; the system can be customized according to the capacity scale of the battery energy storage power station and the environmental climate conditions; moreover, whole equipment structure is simple, operational reliability is high, so investment fortune dimension is with low costs, in addition, operation control is simple, adjust convenient nimble, operational reliability is high, makes it be applicable to unmanned on duty's large-scale battery energy storage power station very much, for example: a large lithium battery energy storage power station.
The embodiment further provides a battery energy storage power station, which comprises a plurality of battery containers 300 and the integrated concentrated liquid cooling heat exchange device. In particular, the battery energy storage power station may be a lithium battery energy storage power station. The battery energy storage power station has all the advantages of the integral concentrated liquid cooling heat exchange equipment, and therefore the description is omitted.
Finally, it is further noted that, herein, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides an integral concentrated liquid cooling indirect heating equipment, its characterized in that is applied to battery energy storage power station, equipment includes refrigerant circulation system (100) and water circulation system (200), refrigerant circulation system (100) are used for doing water circulation system (200) supply with cold volume or heat, water circulation system (200) are including supplying water female pipe (220) and return water female pipe (230), supply water female pipe (220) and be connected with a plurality of water supply branch pipes (221), return water female pipe (230) are connected with a plurality of return water branch pipes (231), water circulation system (200) are for every in a plurality of battery containers (300) of battery energy storage power station all disposes at least one supply water branch pipe (221) and at least one return water branch pipe (231), and every battery container (300) correspond supply water branch pipe (221) with return water branch pipe (231) intercommunication.
2. The integrated concentrated liquid cooled heat exchange unit of claim 1, wherein said water circulation system (200) is configured with one said water supply branch (221) and one said water return branch (231) for each said battery container (300).
3. The integrated concentrated liquid cooling heat exchange device as claimed in claim 2, wherein the water supply branch pipes (221) are provided with three-way valves (222), two of the three-way valves (222) are connected to the water supply branch pipes (221), and the third is connected to the corresponding water return branch pipe (231) or the water return main pipe (230); the water return branch pipe (231) is further provided with a check valve (232), the check valve (232) is arranged on the water return branch pipe (231) and along the flow direction of cooling water, and the check valve (232) is located on the upstream of the joint of the three-way valve (222) and the water return branch pipe (231).
4. The integrated concentrated liquid cooled heat exchanger apparatus according to any of claims 1-3, wherein the water circulation system (200) is a closed water circulation system comprising a circulating water pump (210) for driving the closed water circulation.
5. The integrated concentrated liquid cooling heat exchange device as claimed in claim 4, wherein the water circulation system (200) further comprises a water supply tank (240), and the water supply tank (240) is disposed in the water return main (230) or the water supply main (220).
6. The integrated concentrated liquid cooled heat exchange unit according to any one of claims 1 to 3, wherein said refrigerant circulation system (100) comprises a compressor (110) for compressing a refrigerant, said compressor (110) being a screw compressor.
7. The integrated concentrated liquid cooled heat exchange unit according to any one of claims 1 to 3, wherein the refrigerant circulation system (100) comprises a first heat exchanger (130) and a second heat exchanger (150), the first heat exchanger (130) is configured to dissipate heat to the environment and the second heat exchanger (150) is configured to supply cold to the water circulation system (200) when the refrigerant circulation system (100) is refrigerating; when the refrigerant circulation system (100) heats, the second heat exchanger (150) is used for supplying heat to the water circulation system (200), and the first heat exchanger (130) is used for absorbing heat from the environment.
8. The integrated concentrated liquid cooled heat exchange unit of claim 7, wherein said first heat exchanger (130) is an air cooled heat exchanger.
9. The integrated concentrated liquid-cooled heat exchange unit of claim 7, wherein the second heat exchanger (150) is a shell and tube heat exchanger having a tube side for circulating a refrigerant and a shell side for circulating cooling water.
10. A battery energy storage power station, characterized in that it comprises a plurality of battery containers (300) and an integrated concentrated liquid cooled heat exchange unit according to any of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222216184.8U CN218472066U (en) | 2022-08-23 | 2022-08-23 | Concentrated liquid cooling indirect heating equipment and battery energy storage power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222216184.8U CN218472066U (en) | 2022-08-23 | 2022-08-23 | Concentrated liquid cooling indirect heating equipment and battery energy storage power station |
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| CN218472066U true CN218472066U (en) | 2023-02-10 |
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| CN202222216184.8U Active CN218472066U (en) | 2022-08-23 | 2022-08-23 | Concentrated liquid cooling indirect heating equipment and battery energy storage power station |
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