CN216134309U - Energy storage device and energy storage system - Google Patents
Energy storage device and energy storage system Download PDFInfo
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- CN216134309U CN216134309U CN202122010233.8U CN202122010233U CN216134309U CN 216134309 U CN216134309 U CN 216134309U CN 202122010233 U CN202122010233 U CN 202122010233U CN 216134309 U CN216134309 U CN 216134309U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The application discloses energy memory includes: the equipment cabinet is internally provided with a first cabin and a second cabin which are mutually independent; the battery module is arranged in the first cabin; the energy storage converter is arranged in the second cabin and is connected with the battery module; the liquid cooling heat dissipation system is arranged in the second cabin, part of liquid cooling pipelines of the liquid cooling heat dissipation system are arranged in the first cabin and used for cooling the battery module, and part of liquid cooling pipelines of the liquid cooling heat dissipation system are arranged in the second cabin and used for cooling the energy storage converter; and the control system is arranged in the second cabin and is used for carrying out coordinated dispatching on the whole energy storage device. The application improves the integration level of the energy storage system, reduces the occupied area, improves the power density, improves the stability of the operation of the battery system and saves the cost.
Description
Technical Field
The application relates to the technical field of energy storage, in particular to an energy storage device and an energy storage system.
Background
At present, installed capacities of wind power generation and photovoltaic power generation are rapidly increased, an energy storage system is an important premise for realizing popularization and application of renewable energy sources such as solar energy and wind energy, the contradiction between power generation and power utilization time difference is solved through the energy storage system, impact on a power grid caused by direct grid connection of intermittent renewable energy source power generation is solved, and the energy storage system is an important means for improving stability and safety of a power system.
The common design mode of the energy storage system is a battery and current grid-connected discrete mode, namely the battery system is installed in an independent container cabin body, an independent heat dissipation system is adopted, the energy storage converter is installed in the independent container cabin body, the independent heat dissipation system is adopted, direct current output by the battery system is converged and then is connected into the energy storage converter, the direct current is converted into alternating current, and then the alternating current is connected into an alternating current power grid. The method has the defects of low equipment integration level, large floor area, low power density of the energy storage system and the like.
SUMMERY OF THE UTILITY MODEL
Based on the problem of above-mentioned background art, the application provides an energy memory and energy storage system, solves current energy storage system integrated level low, area is big, power density hangs down the scheduling problem.
In a first aspect, the present application provides an energy storage device comprising:
the equipment cabinet is internally provided with a first cabin and a second cabin which are mutually independent;
the battery module is arranged in the first cabin;
the energy storage converter is arranged in the second cabin and is connected with the battery module;
the liquid cooling heat dissipation system is arranged in the second cabin, part of liquid cooling pipelines of the liquid cooling heat dissipation system are arranged in the first cabin and used for cooling the battery module, and part of liquid cooling pipelines of the liquid cooling heat dissipation system are arranged in the second cabin and used for cooling the energy storage converter;
and the control system is arranged in the second cabin and is used for carrying out coordinated dispatching on the whole energy storage device.
Optionally, the liquid cooling heat dissipation system is located below the energy storage converter, a liquid cooling heat exchange fan is arranged at the top of the liquid cooling heat dissipation system, and an air port of the liquid cooling heat exchange fan faces the energy storage converter.
Optionally, the cold end of the liquid cooling heat dissipation system is arranged close to the energy storage converter.
Optionally, the control system includes:
the battery management system is used for monitoring and maintaining the normal operation of the battery module;
and the energy storage coordination control unit is used for monitoring and coordinating the operation modes and the operation states of the battery module, the energy storage converter and the liquid cooling heat dissipation system, receiving superior scheduling and finishing communication interaction among the energy storage devices.
Optionally, when the energy storage converters are provided in plurality, the energy storage converters are connected in parallel.
Optionally, the liquid cooling pipeline of the liquid cooling heat dissipation system is arranged around the battery module in a surrounding manner.
Optionally, the battery module is provided with a plurality of, a plurality of the battery module is established ties.
In a second aspect, the present application provides an energy storage system, including the energy storage device described in any one of the first aspects, the energy storage device is provided with a plurality of energy storage devices, and the ac output ends of the energy storage converters are connected in parallel.
The beneficial effect of this application is as follows:
in this application, with battery module, energy storage converter, liquid cooling system installation in integration rack, the system integrated level is high, power density is high. The interior of the cabinet is divided into a first cabin and a second cabin which are independent, so that the battery module and the energy storage converter can be ensured to operate independently, heat dissipation is realized in respective independent spaces of the battery module and the energy storage converter, heat interaction is not generated, and the system operation is more stable; on the basis, the heat dissipation of the battery module and the energy storage converter can be realized only through one set of heat dissipation system, and the operation cost is also reduced.
In addition, the liquid cooling heat dissipation system is favorable for guaranteeing the consistency of the temperature of the battery cell, and the reliability of the battery system is further improved. On the basis of reducing the occupied area and improving the system integration level, the power density of the energy storage converter is also improved.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on these drawings without exceeding the protection scope of the present application.
Fig. 1 is a schematic structural diagram of an energy storage device according to an embodiment of the present application.
In the figure, 1, a cabinet; 11. a first compartment; 12. a second compartment; 2. a battery module; 3. an energy storage converter; 4. a liquid cooling heat dissipation system; 41. a liquid cooling heat exchange fan; 5. and (5) controlling the system.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, not all, of the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to facilitate understanding of the technical scheme of the present application, a brief description of the existing energy storage system is first provided. In the existing energy storage system, a plurality of battery modules are connected in series to form a battery cluster, the battery clusters are connected in parallel, and then the battery cluster is arranged in a direct current power distribution cabinet to complete direct current convergence of the battery system in the direct current power distribution cabinet. And the energy storage converter is independently arranged in the independent cabinet body, and the battery system is connected into the energy storage converter after finishing direct current convergence. The above method has the following disadvantages:
firstly, the battery system and the converter system are respectively arranged in different cabinets, the system integration level is low, the occupied area is large, and the power density of the energy storage system is low.
Secondly, if the battery system adopts the air conditioner radiating mode, the electric core difference in temperature is usually more than 10 degrees in the battery module, and electric core temperature uniformity is poor, influences the security and the reliability of the huge electric core of battery system quantity in long-term charge-discharge work.
If the battery system adopts a water cooling heat dissipation mode, the cost and the efficiency are limited, and the energy storage converter usually adopts a forced air cooling heat dissipation mode. Two heat dissipation systems are adopted, so that the integration level of the whole energy storage system is low and the occupied area is large.
Finally, due to the fact that consistency differences exist among battery cells, the adoption of the mode that the battery clusters are directly connected in parallel can cause the difference of output voltages of the battery clusters, and therefore circulation currents among the clusters are caused, extra energy loss is caused, and the utilization rate of the battery is reduced.
Referring to fig. 1, an energy storage device disclosed in the embodiment of the present application includes a cabinet 1, a battery module 2, an energy storage converter 3, a liquid cooling heat dissipation system 4, and a control system 5.
The cabinet 1 is provided with a partition plate inside to divide the cabinet 1 into a left and a right independent first compartment 11 and a second compartment 12.
The battery module 2 is arranged in the first cabin 11 and is responsible for providing direct current electric energy; the energy storage converter 3 is arranged in the second cabin 12 and connected with the battery module 2, and the direct current output by the battery module 2 is converted into alternating current after being connected into the energy storage converter 3 and finally connected into an alternating current power grid.
The pump body, the heat exchanger and other main parts of the liquid cooling heat dissipation system 4 are arranged in the second cabin 12, and part of a liquid cooling pipeline of the liquid cooling heat dissipation system 4 extends into the first cabin 11 and is responsible for cooling the battery module 2; the rest of the liquid cooling pipes of the liquid cooling heat dissipation system 4 are located in the second cabin 12 and are responsible for cooling the energy storage converter 3.
The control system 5 is disposed in the second cabin 12, and is responsible for coordinating and scheduling the operation state and the operation mode of the energy storage device as a core of the whole energy storage device.
In this application, install battery module 2, energy storage converter 3, liquid cooling system 4 in integration rack 1, the system integrated level is high, power density is high. The interior of the cabinet 1 is divided into a first cabin 11 and a second cabin 12 which are independent, so that the independent operation of the battery module 2 and the energy storage converter 3 can be ensured, the battery module 2 and the energy storage converter 3 realize heat dissipation in respective independent spaces, no heat interaction is generated, and the system operation is more stable; on the basis, the heat dissipation of the battery module 2 and the energy storage converter 3 can be realized only through one set of heat dissipation system, and the operation cost is also reduced.
In addition, the liquid cooling heat dissipation system 4 is also favorable for ensuring the consistency of the temperature of the battery cell, and further improves the reliability of the battery system. On the basis of reducing the occupied area and improving the system integration level, the power density of the energy storage converter 3 is also improved.
It should be understood that the cabinet 1 and the internal electrical system in the present application are both in an outdoor type design, which can meet the requirements of an outdoor installation machine.
It should be noted that, in the present application, the control system 5 includes a battery management system and an energy storage coordination control unit. The battery management system is responsible for monitoring the working state of the battery module 2 and maintaining the normal operation of the battery module 2. The energy storage coordination control unit is responsible for monitoring the running states of the battery module 2, the energy storage converter 3 and the liquid cooling heat dissipation system, coordinating the running modes of the battery module, the energy storage converter and the liquid cooling heat dissipation system, receiving superior scheduling and finishing communication interaction among the energy storage devices.
Referring to fig. 1, as an optional technical solution of the present application, in the second cabin 12, the liquid cooling heat dissipation system 4 is located at the bottommost portion of the cabin, the energy storage converter 3 is located above the liquid cooling heat dissipation system 4, the control system 5 is located at the top of the cabin, and the three portions are vertically arranged. The liquid cooling heat exchange fan 41 in the liquid cooling heat dissipation system 4 is arranged at the top of the liquid cooling heat dissipation system 4, and meanwhile, the air port of the liquid cooling heat exchange fan 41 is arranged upwards and faces the energy storage converter 3. When the liquid cooling heat exchange fan 41 works, the air is upwards conveyed to provide forced air cooling for the energy storage converter 3 at the upper part, and the effect of auxiliary heat dissipation is achieved.
Referring to fig. 1, as an optional technical solution of the present application, in the liquid cooling heat dissipation system 4, one end of a medium in the liquid cooling pipeline, which flows out from the inside of the heat exchanger, is called a cold end, and an end portion of the medium which flows back to the heat exchanger is called a hot end, and then the cold end of the liquid cooling heat dissipation system 4 is disposed close to the energy storage converter 3.
Because the calorific capacity of the energy storage converter 3 is large, in the working process of the liquid cooling heat dissipation system 4, a cooling medium firstly flows through the energy storage converter 3 and then enters the second cabin 12 to cool the battery module 2, and the heat transfer process is balanced as much as possible.
It should be noted that in the energy storage device of the present application, the number of the energy storage converters 3 may be one or multiple. When the number of the energy storage converters 3 is plural, the energy storage converters 3 are connected in parallel with each other.
As an optional technical scheme of this application, the liquid cooling pipeline of liquid cooling system 4 encircles and sets up around battery module 2, fixed mounting on the inner wall of second cabin 12.
Optionally, battery module 2 is provided with a plurality ofly in this application, and series connection sets up between a plurality of battery modules 2.
The embodiment of the application also discloses an energy storage system which comprises a plurality of energy storage devices in any one of the embodiments.
According to the capacity configuration requirement, the number of the energy storage devices is determined according to the actual situation, the alternating current output ends of the energy storage converters 3 in the plurality of energy storage devices are connected in parallel, and communication interaction is established among the energy storage device control systems 5 to form an energy storage system with flexible capacity configuration.
It should be understood that, in the present application, on the premise that the capacity configuration meets the requirement, the energy storage device may also be separately arranged, and the ac output terminal thereof may be directly connected to the grid, so as to form an independent energy storage system.
The embodiments of the present application are described in detail above. The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the technical solutions and the core ideas of the present application. Therefore, the person skilled in the art should, according to the idea of the present application, change or modify the embodiments and applications of the present application based on the scope of protection of the present application. In view of the above, the description should not be taken as limiting the application.
Claims (8)
1. An energy storage device, comprising:
the equipment cabinet is internally provided with a first cabin and a second cabin which are mutually independent;
the battery module is arranged in the first cabin;
the energy storage converter is arranged in the second cabin and is connected with the battery module;
the liquid cooling heat dissipation system is arranged in the second cabin, part of liquid cooling pipelines of the liquid cooling heat dissipation system are arranged in the first cabin and used for cooling the battery module, and part of liquid cooling pipelines of the liquid cooling heat dissipation system are arranged in the second cabin and used for cooling the energy storage converter;
and the control system is arranged in the second cabin and is used for carrying out coordinated dispatching on the whole energy storage device.
2. The energy storage device as claimed in claim 1, wherein the liquid cooling system is located below the energy storage converter, a liquid cooling heat exchange fan is disposed at a top of the liquid cooling system, and an air outlet of the liquid cooling heat exchange fan faces the energy storage converter.
3. The energy storage device of claim 1, wherein the cold end of the liquid-cooled heat dissipation system is disposed proximate to the energy storage converter.
4. The energy storage device of claim 1, wherein the control system comprises:
the battery management system is used for monitoring and maintaining the normal operation of the battery module;
and the energy storage coordination control unit is used for monitoring and coordinating the operation modes and the operation states of the battery module, the energy storage converter and the liquid cooling heat dissipation system, receiving superior scheduling and finishing communication interaction among the energy storage devices.
5. The energy storage device as claimed in claim 1, wherein the number of the energy storage converters is single or multiple;
when the energy storage converters are provided in plurality, the energy storage converters are connected in parallel.
6. The energy storage device as claimed in claim 1, wherein the liquid cooling pipes of the liquid cooling heat dissipation system are disposed around the battery module.
7. The energy storage device according to claim 1, wherein the battery module is provided in plurality, and a plurality of the battery modules are connected in series.
8. An energy storage system, characterized in that, the energy storage device of any one of claims 1-7 is included, the energy storage device is provided with a plurality of energy storage devices, and alternating current output ends of the energy storage converters are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122010233.8U CN216134309U (en) | 2021-08-24 | 2021-08-24 | Energy storage device and energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122010233.8U CN216134309U (en) | 2021-08-24 | 2021-08-24 | Energy storage device and energy storage system |
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| CN216134309U true CN216134309U (en) | 2022-03-25 |
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| CN202122010233.8U Active CN216134309U (en) | 2021-08-24 | 2021-08-24 | Energy storage device and energy storage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114784402A (en) * | 2022-04-01 | 2022-07-22 | 欧伏电气股份有限公司 | Environmental control system applied to liquid cooling energy storage system |
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2021
- 2021-08-24 CN CN202122010233.8U patent/CN216134309U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114784402A (en) * | 2022-04-01 | 2022-07-22 | 欧伏电气股份有限公司 | Environmental control system applied to liquid cooling energy storage system |
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