CN217485555U - Energy storage device, energy storage system and cooling system - Google Patents
Energy storage device, energy storage system and cooling system Download PDFInfo
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- CN217485555U CN217485555U CN202220785970.7U CN202220785970U CN217485555U CN 217485555 U CN217485555 U CN 217485555U CN 202220785970 U CN202220785970 U CN 202220785970U CN 217485555 U CN217485555 U CN 217485555U
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Abstract
The application relates to an energy storage device, an energy storage system and a heat dissipation system. The heat dissipation system is used for heat dissipation of the energy storage device, and comprises: the liquid cooling heat dissipation system is used for heat dissipation of the battery module; the air-cooled heat dissipation system is used for dissipating heat of the energy storage converter; the liquid cooling heat dissipation system and the air cooling heat dissipation system are integrally installed and share a liquid-air heat exchange fan, and the liquid-air heat exchange fan is used as the output end of the liquid cooling heat dissipation system and is used as the input end of the air cooling heat dissipation system. The scheme of this application can realize the integration of energy storage converter and battery module cooling system, has reduced system cost, has reduced the fan consumption.
Description
Technical Field
The utility model relates to an energy storage technical field, in particular to energy memory, energy storage system and cooling system.
Background
Under the guidance of the policy of 'carbon peak reaching and carbon neutralization', the installed capacities of wind power generation and photovoltaic power generation are rapidly increased. The energy storage system is a key link for realizing popularization and application of renewable energy sources such as solar energy, wind energy and the like, can solve the time difference contradiction between power generation and power utilization and the impact problem of direct grid connection of intermittent renewable energy source power generation on a power grid, adjusts the quality of electric energy, and is an important means for improving the safety, stability, reliability and power quality of a power system, so that the energy storage system is widely concerned.
The common design modes of the energy storage system at present are a battery and variable current grid-connected discrete mode: the battery system is usually a layout of a single container cabin body, and adopts an air-conditioning heat dissipation system or a water-cooling heat dissipation system. The battery system is formed by connecting a plurality of battery modules in series to form a battery cluster, the plurality of battery clusters are formed by connecting the plurality of battery modules in parallel, and a direct current power distribution cabinet is arranged in the parallel connection link of the battery clusters to complete direct current convergence of the battery system. The direct current is converged and then is connected to an energy storage converter of the other container body to be converted into alternating current, and then is connected to an alternating current power grid.
However, the above designs have certain disadvantages, such as integration level, floor space, safety and reliability, which still need to be further improved or enhanced.
SUMMERY OF THE UTILITY MODEL
The disclosure provides an energy storage device, an energy storage system and a heat dissipation system, so as to improve the integration level of the energy storage device.
According to the present disclosure, there is provided a heat dissipation system for heat dissipation of an energy storage device, including:
the liquid cooling heat dissipation system is used for heat dissipation of the battery module;
the air-cooled heat dissipation system is used for dissipating heat of the energy storage converter;
the liquid cooling heat dissipation system and the air cooling heat dissipation system are integrally installed and share a liquid-air heat exchange fan, and the liquid-air heat exchange fan serves as an output end of the liquid cooling heat dissipation system and is used as an input end of the air cooling heat dissipation system.
According to the embodiment of the application example, the liquid-air heat exchange fan is arranged at the top of the liquid cooling heat dissipation system and used for blowing upwards, and the air cooling heat dissipation system is arranged above the liquid cooling heat dissipation system.
According to this application example embodiment, air-cooled cooling system still includes air inlet duct and air outlet duct, air inlet duct locates energy storage converter's lower extreme, air outlet duct locates energy storage converter's upper end.
According to the embodiment of the application, the air inlet duct is of a bucket-shaped structure with a large end and a small end and is arranged in a vertical mode;
the large opening of the air inlet duct is connected with the liquid-air heat exchange fan; the small opening of the air inlet duct is connected with the air inlet at the bottom of the energy storage converter.
According to the embodiment of the application, the air outlet duct is of an L-shaped bending structure and comprises a vertical part air duct and a horizontal part air duct, wherein the lower end of the vertical part air duct is configured to be connected with an air outlet at the top of the energy storage converter, and the outer end of the horizontal part air duct is configured to be connected with the side wall of the cabinet.
According to this application example embodiment, liquid cooling system still includes the liquid cooling pipeline, each battery module of liquid cooling pipe connection for heating or refrigeration.
The application also provides an energy storage device, including battery module, control system, energy storage converter and any one of the above-mentioned cooling system, control system is used for controlling battery module, energy storage converter and cooling system's operation, energy storage converter with the battery module electricity is connected, battery module, control system, energy storage converter and the integrated installation of cooling system.
According to this application example embodiment, the device still includes the integration rack, battery module, control system, energy storage converter and cooling system all locate in the rack.
According to the embodiment of the application example, the cabinet comprises a left-side compartment and a right-side compartment, and the two parts are sealed and isolated through structural parts;
the battery modules and the liquid cooling pipelines thereof are arranged in the right sub-cabin from bottom to top, and the battery modules and the liquid cooling pipelines are connected in series;
the battery modules and the liquid cooling pipelines of the liquid cooling radiating system are arranged in the right sub-cabin from bottom to top, and the battery modules and the liquid cooling pipelines are connected in series;
the lowest part of the left sub-chamber is provided with one part of the liquid cooling heat dissipation system, the one part comprises a pump body and the liquid-air heat exchange fan, the pump body is connected with the liquid cooling pipeline of the right sub-chamber, and the liquid-air heat exchange fan is used for cooling liquid pumped by the pump body; the energy storage converter and the air-cooled heat dissipation system are arranged in the middle of the left sub-chamber, and the control system is arranged on the upper portion of the left sub-chamber.
The application also provides an energy storage system which is characterized by comprising one or more energy storage devices as described in any one of the above items, wherein when the number of the energy storage devices is larger than 1, the energy storage devices are connected in parallel.
This application is integrated as an organic whole with energy storage battery module and energy storage converter, can enough improve power density, can make both sharing heat abstractor again, has improved the integrated level, the cost is reduced.
According to the energy storage converter air cooling system, the liquid-air heat exchange fan of the battery liquid cooling system is used, the integration of the energy storage converter and the battery module heat dissipation system can be realized, main fan components of the energy storage converter air cooling heat dissipation system do not need to be additionally configured, the system cost is reduced, and the fan power consumption is reduced.
The outdoor type design is adopted, the whole set of energy storage system can be directly installed and operated outdoors, a container does not need to be additionally configured, and the system cost is reduced.
The liquid cooling heat dissipation system is favorable for consistency of battery cell temperature, and reliability of the battery system is improved.
For a further understanding of the nature and technical content of the invention, reference should be made to the following detailed description and accompanying drawings, which are provided for illustration only and are not intended to limit the scope of the invention.
Drawings
Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. The accompanying drawings, which are incorporated herein and constitute part of this disclosure, serve to provide a further understanding of the disclosure. The exemplary embodiments of the present disclosure and their description are provided to explain the present disclosure and not to limit the present disclosure. In the drawings:
FIG. 1 illustrates a schematic structural diagram of an energy storage device according to an exemplary embodiment of the present application;
fig. 2 is a schematic structural diagram illustrating an integrated design of an energy storage converter air cooling and a battery liquid cooling system according to an exemplary embodiment of the present application;
fig. 3 shows a schematic structural diagram of an energy storage device according to a further embodiment of the present application.
List of reference numerals:
10 liquid cooling system 201 air inlet duct
Air outlet duct of 101 liquid-air heat exchange fan 202
20 air-cooled heat dissipation system
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other means, components, materials, devices, etc. In such cases, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail.
The flowcharts shown in the figures are illustrative only and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The terms "first," "second," and the like in the description and claims of the present application and in the foregoing drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The utility model discloses the inventor discovers through the research, and battery system and converter system are arranged separately, need arrange in the container cabin body of difference, and system integration level is low, and area is big, is unfavorable for energy storage system power density's further promotion.
If 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, is unfavorable for security and reliability of the huge electric core of battery system quantity in long-term charge-discharge work.
Energy storage converters typically use forced air cooling for heat dissipation due to cost and efficiency limitations. If the whole energy storage system comprises a plurality of independent heat dissipation systems, the system integration level is low, the occupied area is large, and the after-sale maintenance workload is large.
A plurality of battery clusters are directly connected in parallel, and because the consistency difference exists between battery cores, the difference of the output voltages of the battery clusters can cause the inter-cluster circulation, thereby causing the extra energy loss, reducing the utilization rate of the energy storage battery and reducing the efficiency and the reliability of the system.
Accordingly, the present application is directed to a system for storing energy and dissipating heat from a battery, which solves one or more of the problems set forth above.
In order to achieve the above object, the present invention provides an energy storage device and an energy storage system, which adopt an integrated modular manner.
The energy storage device mainly comprises an energy storage battery module, a control system, an energy storage converter and a liquid cooling heat dissipation system. The battery module, the control system, the energy storage converter and the liquid cooling heat dissipation system can be all integrated in the integrated frame or the cabinet. The energy storage system may consist of a single or multiple energy storage devices connected in parallel. The energy storage device and the energy storage system solve the problem of nearby connection integration of the energy storage battery module and the energy storage converter through innovative design, can share heat dissipation, are simple and reasonable in structure, flexible in capacity configuration, small in occupied area, low in cost and high in reliability, and can meet the requirements of popularization of the energy storage system in the future.
Fig. 1 shows a schematic structural diagram of an energy storage device according to an embodiment of the present application.
This application is integrated as an organic whole with energy storage battery module and energy storage converter, can enough improve power density, can make both sharing heat abstractor again, has improved the integrated level, the cost is reduced.
According to one embodiment of the present application, the energy storage converter may employ an air-cooled heat dissipation mode.
According to one embodiment of the application, the battery module adopts a liquid cooling heat dissipation mode, and forced air cooling heat dissipation of the energy storage converter can be realized by using a liquid-air heat exchange fan of a liquid cooling heat dissipation system of the battery module. So set up, can save the cooling fan device configuration when energy storage converter takes independent forced air cooling mode, the cost is reduced has also saved area or occupation space.
Correspondingly, this application still provides a cooling system for energy memory's heat dissipation, mainly includes:
the liquid cooling heat dissipation system 10 is used for heat dissipation of the battery module;
the air-cooled heat dissipation system 20 is used for dissipating heat of the energy storage converter;
the liquid cooling heat dissipation system and the air cooling heat dissipation system are integrally installed and share a liquid-air heat exchange fan, and the liquid-air heat exchange fan is used as the output end of the liquid cooling heat dissipation system and is used as the input end of the air cooling heat dissipation system.
The liquid-air heat exchange fan 101 can take away heat of liquid in the liquid cooling heat dissipation system by adopting a fan blowing-off mode, so that the liquid is cooled. Meanwhile, the fan can blow the air into the air-cooled heat dissipation system 20 to be used as the air inlet of the air-cooled channel of the energy storage converter.
Fig. 2 is a schematic diagram illustrating an integrated design of an energy storage converter air cooling and battery liquid cooling system according to an embodiment of the present application.
According to the exemplary embodiment of the present application, the liquid cooling heat dissipation system 10 further includes a liquid cooling pipeline, and the liquid cooling pipeline is connected to each battery module and used for heating or cooling the battery module. Of course, the liquid-cooled heat dissipation system 10 may also include other structural components, such as pumps, etc.
According to the exemplary embodiment of the present application, the liquid-air heat exchanging blower 101 is disposed on the top of the liquid cooling heat dissipating system 10 for blowing air upwards, and the air cooling heat dissipating system 20 is disposed above the liquid cooling heat dissipating system 10. Thus, the liquid-air heat exchange fan 101 can provide forced air cooling type heat dissipation for the upper energy storage converter.
According to the exemplary embodiment of the present application, the air-cooled heat dissipation system 20 further includes an air inlet duct 201 and an air outlet duct 202, the air inlet duct 201 is disposed at the lower end of the energy storage converter, and the air outlet duct 202 is disposed at the upper end of the energy storage converter.
According to the exemplary embodiment of the present application, the air inlet duct 201 is a hopper-shaped structure with a large end and a small end, and is arranged in a vertical manner. Of course, the size of the air inlet duct 201 is not limited thereto, and the air inlet duct may have a structure with a uniform diameter.
According to the exemplary embodiment of the present application, the large opening of the air inlet duct 201 is connected to the liquid-air heat exchange fan 101; the small opening of the air inlet duct 201 is connected with the air inlet at the bottom of the energy storage converter.
According to the embodiment of the application, the air outlet duct 202 is an L-shaped bent structure, and includes a vertical portion duct and a horizontal portion duct, wherein a lower end of the vertical portion duct is configured to be connected to an air outlet at the top of the energy storage converter, and an outer end of the horizontal portion duct is configured to be connected to a side wall of the cabinet. The air outlet is arranged at the corresponding position of the side wall of the cabinet, and protective equipment such as a shutter, filter cotton, an outer fan cover and the like can be installed.
Of course, the air outlet duct 202 may be configured in other structural forms, such as a straight structure or a multi-bending structure.
The energy storage converter directly adopts a liquid-air heat exchange fan of the battery liquid cooling heat dissipation system and can be connected with an air outlet closed air duct matched with the structure size to form the energy storage converter air cooling heat dissipation system.
The liquid-air heat exchange fan of the battery liquid cooling system is matched with the air pressure and the air quantity after the wind resistance characteristic of the heat dissipation system, so that the heat dissipation requirement of the liquid-air heat exchange of the battery liquid cooling system can be met, and the air cooling heat dissipation requirement of the energy storage converter can also be met.
According to one embodiment of the present application, the battery modules in a single energy storage device are connected in series. The liquid cooling heat dissipation system is connected with each battery module through a liquid cooling pipeline, has the heating and refrigerating functions, and can meet the requirements of various different operating environments and working conditions.
According to one embodiment of the application, the control system can be composed of a battery management system and an energy storage coordination control unit, the battery management system monitors safe charging and discharging operation of the battery modules, and the energy storage coordination control unit is internally responsible for coordinating and monitoring operation modes and operation states of the battery modules, the energy storage converter and the liquid cooling heat dissipation system, receives superior scheduling for external supports and performs communication interaction among the energy storage devices.
The energy storage converter in a single energy storage device can be a single energy storage converter or a plurality of energy storage converters connected in parallel. The energy storage converters among the energy storage devices support direct parallel connection of the alternating current output ends, and flexible configuration and expansion of the capacity of the energy storage system are facilitated.
All parts of the energy storage device can be designed in an outdoor mode, and the protection grade is not lower than IP 65.
The whole set of energy storage system can be formed by connecting a single energy storage device or a plurality of energy storage devices in parallel, can be directly installed and operated outdoors, and does not need to be additionally provided with a container.
After the scheme is adopted, the utility model discloses with battery liquid cooling system and energy storage converter air-cooled cooling system integrated design, realized battery system, control system, energy storage converter's integrated design, the system integration level is high, and power density is high.
According to the energy storage converter air cooling system, the liquid-air heat exchange fan of the battery liquid cooling system is used, the integration of the energy storage converter and the battery module heat dissipation system can be realized, main fan components of the energy storage converter air cooling heat dissipation system do not need to be additionally configured, the system cost is reduced, and the fan power consumption is reduced.
The outdoor type design is adopted, the whole set of energy storage system can be directly installed and operated outdoors, a container does not need to be additionally configured, and the system cost is reduced.
This application liquid cooling system is favorable to the uniformity of battery electric core temperature, has promoted battery system's reliability.
The technical solution of the present application will be described in detail below with reference to fig. 2 and 3.
As shown in fig. 3, the energy storage device is an integrated cabinet, and the cabinet is designed into left and right sub-chambers. 8 water-cooling battery modules are arranged in the right side of the cabinet body from bottom to top in the sub-cabin, and the module electrical connection and the water-cooling pipeline connection are connected in series. In this embodiment, the liquid cooling heat dissipation system is water-cooled, but may be other common cooling liquids, such as oil.
The integrated frame cabinet is divided into a left part and a right part, and the two parts are sealed and isolated through a structural part partition plate.
The lowest part of the left sub-chamber of the cabinet body is a part of a water-cooling heat dissipation system unit, and main components such as a pump body related to the water-cooling heat dissipation system, a water-air heat exchanger and the like are arranged and installed, wherein a water-air heat exchanger fan is installed at the top of the water-cooling heat dissipation system part, and the fan blows upwards. And the middle part of the left sub-cabin is provided with an energy storage converter unit, two air-cooled energy storage converters are arranged, and the two energy storage converters are connected in parallel. Two energy storage converters in a single energy storage device support the direct parallel connection of the alternating current sides, and the energy storage converters among a plurality of energy storage devices support the direct parallel connection of the alternating current sides.
The water cooling pipeline passes through each battery module on the right side, and liquid flows through the left pump body, and the water air heat transfer fan of water cooling system upwards blows away the heat of the water that the pump body pump was gone up, and the amount of wind gets into the energy storage converter of top through the bucket form air inlet duct after simultaneously, through protective structure such as air outlet duct and shutter outside the cabinet from cabinet body rear portion side. And the upper part of the left sub-cabin is provided with an energy storage device control system, and a battery management system and an energy storage coordination control unit are respectively arranged on the energy storage device control system.
The above arrangement can complete the design and manufacture of a single energy storage device.
And the alternating current side of a single energy storage device is directly connected to the grid, so that an independent energy storage system can be formed. According to the capacity configuration requirement, a plurality of energy storage devices are connected in parallel at the alternating current output side, and communication interaction between energy storage device control systems is established, so that the energy storage system with flexible capacity configuration can be formed.
In this way, can realize the utility model discloses energy storage system's modularized design manufacturing can realize that the integrated level is high, the capacity configuration is nimble, area is little, the heat dissipation is good, power density is high, with low costs energy storage system founds.
In a word, this application simple structure is reasonable, and the integrated level is high, and power density is big, and the radiating effect is good, and the reliability is high, can satisfy the demand of various capacity battery energy storage system application occasions.
Finally, it should be noted that: although the present disclosure has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the disclosure. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (10)
1. A heat dissipation system for dissipating heat from an energy storage device, comprising:
the liquid cooling heat dissipation system is used for heat dissipation of the battery module;
the air-cooled heat dissipation system is used for dissipating heat of the energy storage converter;
the liquid cooling heat dissipation system and the air cooling heat dissipation system are integrally installed and share a liquid-air heat exchange fan, and the liquid-air heat exchange fan is used as the output end of the liquid cooling heat dissipation system and is used as the input end of the air cooling heat dissipation system.
2. The heat dissipation system of claim 1, wherein the liquid-to-air heat exchanging fan is disposed at a top of the liquid-cooled heat dissipation system for blowing air upward, and the air-cooled heat dissipation system is disposed above the liquid-cooled heat dissipation system.
3. The heat dissipation system of claim 2, further comprising an inlet air duct and an outlet air duct, wherein the inlet air duct is disposed at a lower end of the energy storage converter, and the outlet air duct is disposed at an upper end of the energy storage converter.
4. The heat dissipation system of claim 3, wherein the air inlet duct is in a funnel-shaped structure with a large end and a small end, and is arranged in a vertical manner;
the large opening of the air inlet duct is connected with the liquid-air heat exchange fan; and a small opening of the air inlet duct is connected with an air inlet at the bottom of the energy storage converter.
5. The heat dissipation system of claim 3, wherein the air outlet duct is of an L-shaped bent structure and comprises a vertical part duct and a horizontal part duct, wherein the lower end of the vertical part duct is configured to be connected with an air outlet at the top of the energy storage converter, and the outer end of the horizontal part duct is configured to be connected with a side wall of the cabinet.
6. The heat dissipation system of any of claims 1-5, further comprising liquid cooling conduits connecting each battery module for heating or cooling.
7. An energy storage device, comprising a battery module, a control system, an energy storage converter and the heat dissipation system of any one of claims 1 to 6, wherein the control system is used for controlling the operation of the battery module, the energy storage converter and the heat dissipation system, the energy storage converter is electrically connected with the battery module, and the battery module, the control system, the energy storage converter and the heat dissipation system are integrally installed.
8. The energy storage device of claim 7, further comprising an integrated cabinet, wherein the battery module, the control system, the energy storage converter, and the heat dissipation system are disposed within the cabinet.
9. The energy storage device of claim 8, wherein said cabinet comprises a left side sub-compartment and a right side sub-compartment, the two parts being sealed from each other by a structural member;
the battery modules and the liquid cooling pipelines of the liquid cooling heat dissipation system are arranged in the right sub-cabin from bottom to top, and the battery modules and the liquid cooling pipelines are connected in series;
the lowest part of the left sub-chamber is provided with one part of the liquid cooling heat dissipation system, the one part comprises a pump body and the liquid-air heat exchange fan, the pump body is connected with the liquid cooling pipeline of the right sub-chamber, and the liquid-air heat exchange fan is used for cooling liquid pumped by the pump body; the energy storage converter and the air-cooled heat dissipation system are arranged in the middle of the left sub-chamber, and the control system is arranged on the upper portion of the left sub-chamber.
10. An energy storage system, characterized in that it comprises one or several energy storage devices according to any of claims 7 to 9, several of said energy storage devices being connected in parallel when the number of said energy storage devices is greater than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220785970.7U CN217485555U (en) | 2022-04-06 | 2022-04-06 | Energy storage device, energy storage system and cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220785970.7U CN217485555U (en) | 2022-04-06 | 2022-04-06 | Energy storage device, energy storage system and cooling system |
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| Publication Number | Publication Date |
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| CN217485555U true CN217485555U (en) | 2022-09-23 |
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| CN202220785970.7U Active CN217485555U (en) | 2022-04-06 | 2022-04-06 | Energy storage device, energy storage system and cooling system |
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