CN116826233B - Energy storage device - Google Patents
Energy storage device Download PDFInfo
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- CN116826233B CN116826233B CN202310662613.0A CN202310662613A CN116826233B CN 116826233 B CN116826233 B CN 116826233B CN 202310662613 A CN202310662613 A CN 202310662613A CN 116826233 B CN116826233 B CN 116826233B
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- Prior art keywords
- heat dissipation
- energy storage
- communication port
- cabinet
- storage device
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- 238000004146 energy storage Methods 0.000 title claims abstract description 59
- 230000017525 heat dissipation Effects 0.000 claims abstract description 128
- 238000004891 communication Methods 0.000 claims abstract description 81
- 239000000110 cooling liquid Substances 0.000 claims abstract description 64
- 230000002093 peripheral effect Effects 0.000 claims abstract description 19
- 238000009423 ventilation Methods 0.000 claims description 23
- 239000011229 interlayer Substances 0.000 claims description 20
- 230000002787 reinforcement Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 14
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 24
- 238000013461 design Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 14
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 10
- 229910052744 lithium Inorganic materials 0.000 description 10
- 238000001816 cooling Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002937 thermal insulation foam Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Secondary Cells (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The application is applicable to the technical field of energy storage, and provides an energy storage device which comprises a containing cabinet and a first heat dissipation structure. The holding cabinet is provided with a holding cavity for holding the heating element and the cooling liquid. The first heat radiation structure is provided with a heat radiation cavity, the first heat radiation structure is arranged above the accommodating cabinet, the first heat radiation structure is provided with a middle area and a peripheral area, the peripheral area is surrounded on the periphery of the middle area, the middle area is provided with a first communication port, the peripheral area is provided with a second communication port, the first communication port is respectively communicated with the accommodating cavity and the heat radiation cavity, and the second communication port is respectively communicated with the accommodating cavity and the heat radiation cavity. According to the energy storage device, heat dissipation is achieved through self-circulation flow of the cooling liquid, and in the heat dissipation process, an external power transportation device does not need to be arranged to enable the cooling liquid to circulate, so that energy consumption of the energy storage device is effectively reduced.
Description
Technical Field
The application relates to the technical field of energy storage, in particular to an energy storage device.
Background
In recent years, with the support of low-carbon environmental protection advocated by the country and related policies, lithium batteries have been vigorously developed as a green energy source. Lithium batteries have the advantages of high energy density, long cycle life, low self-discharge rate and the like, and are widely applied to the fields of electric automobiles, electric tools, aerospace and the like nowadays. In the working process of the lithium battery, the temperature can rise, particularly in a lithium battery energy storage system, when the lithium battery energy storage system works, if the heat generated by the lithium battery inside the lithium battery energy storage system is not emitted in time, the situation of fire and even explosion is extremely easy to cause. Therefore, the heat dissipation performance is a serious problem in the development of the lithium battery energy storage system and is a precondition for the safe use of the lithium battery energy storage system.
The lithium battery type energy storage system generally comprises a battery energy storage cabinet, and when the battery energy storage cabinet adopts a liquid cooling mode to cool a battery, at least one pumping device is usually required to be arranged to drive cooling liquid to flow.
Disclosure of Invention
The embodiment of the application aims to provide an energy storage device and aims to solve the technical problem of high energy consumption of a battery energy storage cabinet in the prior art.
In order to achieve the above purpose, the application adopts the following technical scheme: there is provided an energy storage device comprising:
The accommodating cabinet is provided with an accommodating cavity for accommodating the heating element and the cooling liquid;
The first heat radiation structure has a heat radiation cavity, the first heat radiation structure install in the top of holding cabinet, the first heat radiation structure has middle part region and peripheral region, peripheral region encloses to be located the periphery of middle part region, the middle part region is provided with first communication port, peripheral region is provided with the second communication port, first communication port respectively with hold the chamber with the heat radiation cavity communicates, the second communication port respectively with hold the chamber with the heat radiation cavity communicates.
In one possible design, the first heat dissipating structure includes a housing and a plurality of heat dissipating fins, the heat dissipating cavity being located within the housing;
The shell is provided with a plurality of radiating fins in a protruding mode into the radiating cavity, and/or the shell is provided with a plurality of radiating fins in an protruding mode.
In one possible design, the energy storage device further includes a heat dissipation cabinet, the heat dissipation cabinet is mounted above the accommodating cabinet, the first heat dissipation structure is mounted in the heat dissipation cabinet, and an air supply device is arranged on the side wall of the heat dissipation cabinet.
In one possible design, the heat dissipation cabinet is further provided with ventilation openings, and the air supply device and the ventilation openings are respectively located on two opposite side walls of the heat dissipation cabinet.
In one possible design, the heat dissipation cabinet is further provided with an air guiding structure, the air guiding structure is located on the outer side of the heat dissipation cabinet, the air guiding structure is provided with an air duct, a first opening and a second opening, wherein the first opening is communicated with the ventilation opening, and the opening direction of the second opening is inclined downwards or vertical downwards.
In one possible design, the side wall of the cabinet comprises an inner plate and an outer plate with an interlayer therebetween.
In one possible design, a reinforcement is provided in the sandwich layer, which reinforcement is connected to the inner plate and the outer plate, respectively.
In one possible design, an insulating structure is provided within the interlayer.
In one possible design, a second heat dissipating structure is disposed within the interlayer.
In one possible design, the outer plate of the cabinet is provided with a heat dissipation hole, which communicates with the interlayer.
The energy storage device provided by the application has the beneficial effects that: compared with the prior art, the energy storage device provided by the application can be used for storing batteries, namely can be used as a battery energy storage cabinet, and the batteries are taken as heating elements and cooling liquid to be accommodated in the accommodating cavity. After the battery heats, the cooling liquid at the middle part of the accommodating cavity is relatively far away from the outer wall of the accommodating cabinet, heat dissipation is slower, so that the cooling liquid at the middle part of the accommodating cavity is faster in temperature rise, and the cooling liquid can expand after temperature rise, so that the cooling liquid at the middle part of the accommodating cavity enters the heat dissipation cavity through the first communication opening, and the cooling liquid in the heat dissipation cavity is pushed by the cooling liquid subsequently entering the heat dissipation cavity to flow back to the accommodating cavity from the second communication opening, so that the cooling liquid can realize self-circulation heat dissipation through the first heat dissipation structure. Therefore, the energy storage device provided by the application can realize heat dissipation through the self-circulation flow of the cooling liquid, and an external power transportation device is not required to be arranged in the heat dissipation process so as to promote the cooling liquid to circulate, thereby effectively reducing the energy consumption of the energy storage device provided by the application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of an energy storage device according to an embodiment of the present application;
Fig. 2 is a schematic structural diagram of a first heat dissipation structure of an energy storage device according to an embodiment of the present application;
FIG. 3 is a schematic view of a portion of a first heat dissipating structure of an energy storage device according to an embodiment of the present application;
FIG. 4 is an enlarged partial schematic view at A in FIG. 3;
FIG. 5 is an exploded view of an energy storage device according to one embodiment of the present application;
fig. 6 is an exploded view of a part of the structure of an energy storage device according to an embodiment of the present application.
Reference numerals related to the above figures are as follows:
100. A cabinet; 110. a receiving chamber; 120. an inner plate; 130. an outer plate; 140. an interlayer; 141. a reinforcing member; 150. a bottom plate; 160. a top plate; 170. a support column; 180. a heat generating member; 190. a bracket;
200. a heat dissipation cabinet; 210. an air supply device; 220. a vent; 230. an air guiding structure; 240. a mounting plate; 250. a cover plate;
300. A first heat dissipation structure; 310. a heat dissipation cavity; 320. a heat radiation fin; 330. a sealing plate; 340. a first communication port; 350. a second communication port; 360. a first seal groove; 361. a threaded hole; 370. a housing.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the structures or elements being referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In order to explain the technical scheme of the application, the following is a detailed description with reference to the specific drawings and embodiments.
As shown in fig. 1 to 6, an embodiment of the present application provides an energy storage device including a cabinet 100 and a first heat dissipation structure 300. The cabinet 100 has a receiving chamber 110, and the receiving chamber 110 is used for receiving the heat generating member 180 and the cooling liquid. The first heat dissipation structure 300 has a heat dissipation cavity 310, the first heat dissipation structure 300 is mounted above the accommodating cabinet 100, the first heat dissipation structure 300 has a middle area and a peripheral area, the peripheral area is surrounded on the periphery of the middle area, the middle area is provided with a first communication port 340, the peripheral area is provided with a second communication port 350, the first communication port 340 is respectively communicated with the accommodating cavity 110 and the heat dissipation cavity 310, and the second communication port 350 is respectively communicated with the accommodating cavity 110 and the heat dissipation cavity 310. It should be noted that, the peripheral area is disposed around the periphery of the middle area, and specifically refers to that the peripheral area is located on the periphery of the middle area extending along the horizontal direction; alternatively, the peripheral region is located at the periphery of the middle region in the projection of the first heat dissipating structure 300 on the horizontal plane.
The density of the cooling liquid can be reduced after the cooling liquid is heated and expanded, and the cooling liquid with higher heating expansion speed can be raised relative to other cooling liquids with lower heating expansion speeds. Since the cooling liquid closer to the center of the accommodating chamber 110 is farther from the outer wall of the accommodating cabinet 100, the cooling liquid dissipates heat more slowly, so that the temperature rising speed of the cooling liquid in the middle of the accommodating chamber 110 is faster than that of the cooling liquid in the edge area of the accommodating chamber 110, that is, the rising speed of the cooling liquid in the middle of the accommodating chamber 110 is faster than that of the cooling liquid in the edge area of the accommodating chamber 110. Since the first communication port 340 is provided in the middle region of the first heat dissipation structure 300 and the rising speed of the cooling liquid in the middle of the accommodating chamber 110 is faster, the cooling liquid enters the heat dissipation chamber 310 through the first communication port 340, the cooling liquid entering the heat dissipation chamber 310 flows from the first communication port 340 to the outer peripheral region of the first communication port 340, that is, the cooling liquid flows from the first communication port 340 to the direction close to the second communication port 350, and finally flows back to the accommodating chamber 110 from the second communication port 350, thereby forming the cooling liquid circulation as shown by the arrow in fig. 1, that is, self-circulation heat dissipation is realized.
The energy storage device provided by the embodiment can be applied to various low-power micro-grid energy storage systems, such as a household micro-grid system, an island micro-grid system, a remote area micro-grid system or an electric energy supplementing energy storage system, and can also be used as a standby power supply. When the energy storage device provided in this embodiment is applied to an electric energy supplementing type energy storage system or used as a standby power supply, the energy storage device provided in this embodiment may be used for storing a battery, that is, may be used as a battery energy storage cabinet, and the battery is used as the heating element 180 and the cooling liquid and is accommodated in the accommodating cavity 110. The battery may be a battery cell, an electric core, or a battery module composed of a plurality of electric cores, etc. After the battery heats, the cooling liquid located in the middle of the accommodating cavity 110 expands and rises, so that the cooling liquid located in the middle of the accommodating cavity 110 enters the heat dissipation cavity 310 through the first communication port 340, and the cooling liquid in the heat dissipation cavity 310 is pushed by the cooling liquid subsequently entering the heat dissipation cavity 310 to flow back to the accommodating cavity 110 from the second communication port 350, that is, the cooling liquid realizes self-circulation heat dissipation through the first heat dissipation structure 300. As can be seen from the above, the energy storage device provided by the embodiment of the application realizes heat dissipation through the self-circulation flow of the cooling liquid, and in the heat dissipation process, an external power transportation device is not required to be arranged to promote the cooling liquid to circulate, so that the energy consumption of the energy storage device provided by the application is effectively reduced.
The transformer mineral oil can be selected as the cooling liquid, has good insulating property, heat conducting property and flowing property, is easy to expand after being heated (the volume of the mineral oil is increased by 0.07 percent when the temperature is increased by one degree, and is reduced conversely), is a good cooling medium, and can effectively improve the heat dissipation effect by adopting the transformer mineral oil as the cooling liquid. Or the cooling liquid can be other insulating liquid which can be used for heat dissipation and has the characteristic of heat rising. In this embodiment, the battery in the accommodating cabinet 100 is soaked in the cooling liquid, on the one hand, the heat of the battery in the accommodating cabinet 100 can be fully dissipated, on the other hand, the cooling liquid can be used for isolating oxygen, so that the fire inside the accommodating cabinet 100 is prevented, and further, the fire or explosion is effectively prevented, on the other hand, due to the good thermal conductivity of the cooling liquid, in this embodiment, the cooling liquid can flow in a self-circulation manner after the battery heats, so that the temperature difference between the part of the battery close to the middle area of the accommodating cavity 110 and the part of the battery close to the edge area of the accommodating cavity 110 is small, and the service life of the battery can be improved to a certain extent.
In one possible design, the first heat dissipating structure 300 includes a housing 370 and a plurality of heat dissipating fins 320, with the heat dissipating cavity 310 being located within the housing 370. The housing 370 is provided with a plurality of heat radiating fins 320 protruding into the heat radiating cavity 310; or the housing 370 is provided with a plurality of heat radiating fins 320 protruding outward; or a plurality of heat dissipation fins 320 are respectively arranged on the inner side and the outer side of the shell 370, and the heat dissipation fins 320 on the inner side of the shell 370 are positioned in the heat dissipation cavity 310. The heat dissipation is performed by the plurality of heat dissipation fins 320, respectively, to improve the heat dissipation efficiency of the first heat dissipation structure 300. The heat dissipation fins 320 may have a plate-like structure, a honeycomb mesh structure, or other regular-shaped structures, which are not limited herein.
When the heat dissipation cavity 310 is provided with the plurality of heat dissipation fins 320, the contact area between the cooling liquid and the first heat dissipation structure 300 can be increased, and heat is conducted through the plurality of heat dissipation fins 320, so that heat in the cooling liquid is conducted to the outside, and the cooling liquid is rapidly dissipated. When the housing 370 is provided with the plurality of heat dissipation fins 320 protruding outwards, the contact area between the first heat dissipation structure 300 and the outside can be increased, so that the heat in the heat dissipation cavity 310 can be conducted to the outside through the plurality of heat dissipation fins 320 outside the housing 370, and the cooling liquid can be quickly dissipated. When the plurality of heat dissipation fins 320 are respectively disposed on the inner side and the outer side of the housing 370, as shown in fig. 2 to 4, the plurality of heat dissipation fins 320 are respectively disposed on the inner side and the outer side of the housing 370 at intervals, so that the heat dissipation efficiency of the first heat dissipation structure 300 can be further improved, thereby further improving the heat dissipation speed of the cooling liquid.
In one particular embodiment, as shown in fig. 3 and 4, the housing 370 is cylindrical, particularly a rectangular parallelepiped cylindrical structure. The inner cavity of the housing 370 is the heat dissipation cavity 310, and the plurality of heat dissipation fins 320 are distributed at intervals on the inner side and the outer side of the housing 370. The housing 370 may be fixedly coupled (e.g., welded, glued, etc.) to the plurality of fins 320; or the shell 370 and the plurality of radiating fins 320 are integrally formed, that is, in the manufacturing process, the shell 370 and the plurality of radiating fins 320 are simultaneously extruded and formed by adopting an extrusion molding method. The housing 370 has openings at both ends thereof, and as shown in fig. 4, the openings at both ends of the housing 370 are sealed by welding through the sealing plates 330, respectively, to prevent the coolant in the heat dissipation chamber 310 from flowing out. The seal plate 330 and the housing 370 may be welded by friction stir welding or brazing.
The central region of the first heat dissipation structure 300, i.e., the region near the center in the bottom wall of the housing 370, and the peripheral region of the first heat dissipation structure 300, i.e., the region near the edge in the bottom wall of the housing 370. Optionally, an opening is disposed above the cabinet 100, the housing 370 covers the opening above the cabinet 100, and the first communication port 340 and the second communication port 350 respectively penetrate through the bottom wall of the housing 370, so that the first communication port 340 respectively communicates with the accommodating cavity 110 and the heat dissipation cavity 310, and the second communication port 350 respectively communicates with the accommodating cavity 110 and the heat dissipation cavity 310. In a specific embodiment, the number of the second communication ports 350 is plural, and the second communication ports 350 are distributed in the peripheral area at intervals in a ring shape, that is, the second communication ports 350 are disposed around the periphery of the first communication port 340. Specifically, as shown in fig. 2, the number of the second communication ports 350 is two, and the two second communication ports 350 are respectively located at opposite sides of the first communication port 340. As shown in fig. 1, the direction indicated by the arrow in fig. 1 is the direction of the circulating flow of the cooling liquid, when the cooling liquid enters the cooling cavity 310 from the first communication port 340, the cooling liquid can flow back to the accommodating cabinet 100 from two opposite sides of the first communication port 340, so that the distribution uniformity of the cooling liquid flowing back to the accommodating cabinet 100 after being cooled by the first cooling structure 300 can be improved to a certain extent, and the cooling effect of the energy storage device is improved. Optionally, the number of the second communication ports 350 may be more, and the plurality of second communication ports 350 are distributed in the peripheral area at intervals in a ring shape, so that the heat dissipation effect of the energy storage device can be further improved.
The cooling liquid enters the heat dissipation chamber 310 from the first communication port 340 at a first rate, and the cooling liquid flows back to the cabinet 100 from the second communication port 350 at a second rate. Optionally, the cross-sectional area of the first communication port 340 is larger than the cross-sectional area of each second communication port 350, so that the first rate is larger than the second rate, thereby improving the residence time of the cooling liquid in the first heat dissipation structure 300 to some extent, and improving the heat dissipation effect of the cooling liquid.
In one possible design, the energy storage device further includes a heat dissipation cabinet 200, the heat dissipation cabinet 200 is installed above the accommodating cabinet 100, the first heat dissipation structure 300 is installed in the heat dissipation cabinet 200, and the air supply device 210 is disposed on a side wall of the heat dissipation cabinet 200. By arranging the air supply device 210, air in the heat dissipation cabinet 200 is promoted to circulate, and heat dissipation efficiency of the first heat dissipation structure 300 is improved. The air supply device 210 may be a fan or other structures capable of driving air to flow, and the fan may be a low-power fan to reduce the power consumption to a certain extent.
In a specific embodiment, as shown in fig. 5, the number of fans is plural, and the fans are distributed on a side wall of the heat dissipation cabinet 200 at intervals, so that air circulation can be achieved in a plurality of areas in the heat dissipation cabinet 200, and heat dissipation efficiency of the first heat dissipation structure 300 is improved.
In one possible design, as shown in fig. 5, the heat dissipating cabinet 200 is further provided with a ventilation opening 220, and the air supply device 210 and the ventilation opening 220 are respectively located on two opposite sidewalls of the heat dissipating cabinet 200. By this arrangement, air convection is formed between the air supply device 210 and the ventilation opening 220, which is beneficial to improving the air circulation rate in the heat dissipation cabinet 200, so as to further improve the heat dissipation efficiency of the first heat dissipation structure 300.
The number of the ventilation openings 220 is plural, and the ventilation openings 220 are disposed at intervals on the side wall of the heat dissipation cabinet 200, so that the ventilation speed of the heat dissipation cabinet 200 is further improved by disposing the ventilation openings 220. In an alternative embodiment, the side wall of the heat dissipation cabinet 200 provided with the ventilation opening 220 is a ventilation plate, the ventilation plate may be specifically in a grid shape, and each hole in the ventilation plate is the ventilation opening 220, so that external sundries are shielded by adopting the grid-shaped ventilation plate.
In one possible design, as shown in fig. 1, the heat dissipation cabinet 200 is further provided with an air guiding structure 230, where the air guiding structure 230 is located on the outer side of the heat dissipation cabinet 200, and the air guiding structure 230 has an air duct, and a first opening and a second opening that are communicated with the air duct, where the first opening is communicated with the ventilation opening 220, and the opening of the second opening is oriented obliquely downward or vertically downward. By setting the opening orientation of the second opening to be inclined downward or vertically downward, a certain dust-proof and rainwater-proof effect can be played to the inside of the heat sink 200 on the basis that ventilation can be achieved by the ventilation opening 220. When the number of the ventilation openings 220 is plural, each ventilation opening 220 is covered with one air guiding structure 230.
In one embodiment, as shown in fig. 1 or 5, a mounting board 240 is disposed in the inner cavity of the heat dissipating cabinet 200, and the mounting board 240 is used to mount other components of the energy storage device, such as a circuit board. Alternatively, the connection between the mounting plate 240 and the inner wall of the heat dissipating cabinet 200 may be welding, bonding, or an auxiliary connection (such as a screw or a buckle), which is not limited herein. Optionally, as shown in fig. 5, an opening is provided at the top of the heat dissipation cabinet 200, a cover plate 250 is covered at the opening at the top of the heat dissipation cabinet 200, and the opening is provided at the top of the heat dissipation cabinet 200, so that other components are mounted on the mounting board 240, and the cover plate 250 is provided to protect the first heat dissipation structure 300 and other components inside the heat dissipation cabinet 200 through the cover plate 250 and the side wall of the heat dissipation cabinet 200.
In one possible design, the side walls of the cabinet 100 include an inner panel 120 and an outer panel 130 with an interlayer 140 between the inner panel 120 and the outer panel 130. The interlayer 140 can play a certain role in heat insulation of the accommodating cavity 110, and when the energy storage device works in an extremely cold environment, the temperature in the accommodating cavity 110 can be prevented from being too low to a certain extent, so that the energy storage device can work normally in the extremely cold environment; when the energy storage device works in a high-temperature environment, external heat can be reduced to a certain extent and conducted into the accommodating cavity 110, so that the influence on the normal work of the energy storage device due to overhigh temperature in the accommodating cavity 110 is prevented to a certain extent.
In one possible design, an insulating structure is provided within the interlayer 140. By providing an insulating structure within the interlayer 140, the insulating effect on the receiving cavity 110 is further enhanced. The heat insulation structure can be a heat insulation foam, such as a silicon rock wool and other structures with heat insulation effects.
In a specific embodiment, the number of the inner plates 120 and the outer plates 130 is plural, and opposite sides of each inner plate 120 are sequentially connected to form a cylindrical structure, where the plurality of outer plates 130 and the plurality of inner plates 120 are disposed in one-to-one correspondence. The inner plates 120 and the outer plates 130 are spaced apart to form interlayers 140 between the respective inner plates 120 and the corresponding outer plates 130, respectively, so that the heat insulation effect on the battery can be improved. The cabinet 100 further includes a bottom plate 150 and a top plate 160, the bottom plate 150 is located below the inner plate 120 and the outer plate 130, and the bottom plate 150 is connected with the outer plates 130 and the inner plates 120 respectively, and the connection mode between the bottom plate 150 and the outer plates 130 and the inner plates 120 can be specifically welding or bonding. The top plate 160 is located above the inner plates 120 and the outer plates 130, and the top plate 160 is also connected to the plurality of outer plates 130 and the plurality of inner plates 120, respectively. The top plate 160, the bottom plate 150, and the plurality of inner plates 120 enclose each other to form the accommodating chamber 110, and an interlayer 140 is formed between each inner plate 120 and the corresponding outer plate 130. In one embodiment, as shown in fig. 6, the number of the inner plates 120 and the outer plates 130 is 4, the top plate 160 and the bottom plate 150 are square, and the top plate 160, the bottom plate 150, and the 4 inner plates 120 are enclosed to form a rectangular parallelepiped housing 370.
In one embodiment, the first heat dissipation structure 300 is mounted on the top plate 160, and the bottom of the heat dissipation cabinet 200 also has an opening, and the heat dissipation cabinet 200 covers the top plate 160 to protect the first heat dissipation structure 300. The top plate 160 is provided with a third communication port and a fourth communication port in a penetrating manner, the third communication port is opposite to the first communication port 340, and the fourth communication port is opposite to the second communication port 350, so that the first communication port 340 and the second communication port 350 are respectively communicated with the accommodating cavity 110, even if the first communication port 340 and the second communication port 350 are respectively communicated with the accommodating cavity 110, the cooling liquid can sequentially pass through the third communication port and the first communication port 340 and then enter the first heat dissipation structure 300, and the cooling liquid sequentially passes through the second communication port 350 and the fourth communication port and then flows back to the accommodating cabinet 100 after being subjected to heat dissipation through the first heat dissipation structure 300, so that cooling liquid circulation is realized. When the number of the second communication ports 350 is plural, the number of the fourth communication ports is plural, and the plural fourth communication ports are disposed in one-to-one correspondence with the plural second communication ports 350.
The bottom wall of the housing 370 is connected to the top plate 160, thereby enabling the first heat dissipating structure 300 to be mounted on the top plate 160. In some alternative embodiments, the bottom wall of the housing 370 and the top plate 160 may be welded, glued, or otherwise connected by an auxiliary connector, for example, the bottom wall of the housing 370 and the top plate 160 may be connected by an auxiliary connector, particularly by a screw. The bottom wall of the housing 370 is provided with a screw hole 361 facing one side of the top plate 160, and the top plate 160 is provided with a mounting hole therethrough, the mounting hole being coaxially provided with the screw hole 361 so that a screw passes through the mounting hole to be connected with the screw hole 361, thereby realizing connection of the bottom wall of the housing 370 and the top plate 160.
In a specific embodiment, a first seal member and a second seal member are further disposed between the bottom wall of the housing 370 and the top plate 160, the first seal member is annularly disposed around the outer periphery of the first communication port 340, and the second seal member is annularly disposed around the outer periphery of the second communication port 350. The first sealing member and the second sealing member have the same structure and the same installation mode. Taking the first sealing member as an example, as shown in fig. 4, a first sealing groove 360 is disposed on a side of the bottom wall of the housing 370 facing the top plate 160, the first sealing groove 360 is formed in a ring shape and is wound around the outer periphery of the first communication port 340, the first sealing member is in a ring shape structure, and the first sealing member is embedded in the first sealing groove 360. When the first heat dissipating structure 300 is mounted on the top plate 160, the bottom wall of the housing 370 presses the first sealing member against the top plate 160, and the gap between the bottom wall of the housing 370 and the top plate 160 can be effectively avoided by the first sealing member, thereby improving the sealing effect. The first sealing element and the second sealing element can be made of rubber, silica gel or other materials which can be used for manufacturing sealing structures, specifically, the first sealing element and the second sealing element are made of butadiene-acrylonitrile rubber, and the oil corrosion resistance of the butadiene-acrylonitrile rubber is superior, so that the service lives of the first sealing element and the second sealing element are longer.
In an alternative embodiment, as shown in fig. 3 and 4, the number of the threaded holes 361 is plural, and the plurality of threaded holes 361 are uniformly wound around the periphery of the first communication port 340 at intervals, and may specifically be located between the first sealing groove 360 and the first communication port 340, or may be located at a side of the first sealing groove 360 away from the first communication port 340, which is not limited herein. Correspondingly, the quantity of mounting holes is also a plurality of, and a plurality of screw holes 361 and a plurality of mounting holes one-to-one set up, so set up, can make the extrusion force that first sealing member received comparatively even to effectively improve the sealed effect of first sealing member.
In an alternative embodiment, a support post 170 is provided between each adjacent two of the inner plates 120, the support post 170 being used to mount the battery. Specifically, the energy storage device includes a bracket 190, and a plurality of batteries are mounted on the bracket 190, and the bracket 190 is mounted in the accommodating cavity 110 through the support column 170, so that each battery is mounted in the accommodating cavity 110 more stably.
In one possible design, a second heat dissipating structure is disposed within the interlayer 140. When the energy storage device is in a normal temperature or higher temperature environment, the heat dissipation effect can be further improved by arranging the second heat dissipation structure in the interlayer 140. The second heat dissipation structure may be the same structure as the first heat dissipation structure 300, or may be a different structure, which is not limited herein.
In one possible design, as shown in fig. 1 and 6, a reinforcement 141 is disposed within the sandwich 140, the reinforcement 141 being connected to the inner panel 120 and the outer panel 130, respectively. Through setting up reinforcement 141, accessible reinforcement 141 heat conduction on the one hand to improve the radiating effect, on the other hand can improve the structural strength of inner panel 120 and planking 130 through setting up reinforcement 141, namely improve the structural strength of holding cabinet 100, in order to improve the guard action to the battery.
In a specific embodiment, as shown in fig. 6, the reinforcing members 141 are in a strip structure, the number of the reinforcing members 141 is plural, the plurality of reinforcing members 141 are disposed in the interlayer 140 at intervals, and the plurality of reinforcing members 141 are respectively connected with the inner plate 120 and the outer plate 130, so as to further improve the structural strength of the accommodating cabinet 100.
In one possible design, outer panel 130 of cabinet 100 is provided with louvers that communicate with interlayer 140. Through setting up the louvre, be favorable to the heat dissipation of second heat radiation structure to further improve the radiating effect. Optionally, the number of the heat dissipation holes is multiple, and the plurality of heat dissipation holes are distributed on the outer plate 130 at intervals, so as to further improve the heat dissipation effect of the second heat dissipation structure.
The above description is illustrative of the various embodiments of the application and is not intended to be limiting, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (9)
1. An energy storage device, comprising:
The accommodating cabinet is provided with an accommodating cavity, the accommodating cavity is used for accommodating a battery and cooling liquid, the battery is soaked in the cooling liquid, and the cooling liquid is insulating liquid with a heated floating characteristic; the accommodating cabinet comprises a top plate, and a third communication port and a fourth communication port are formed in the top plate in a penetrating manner;
The first heat dissipation structure is provided with a heat dissipation cavity and is arranged on the top plate, the first heat dissipation structure is provided with a middle area and a peripheral area, the peripheral area is arranged on the periphery of the middle area in a surrounding mode, the middle area is provided with a first communication port, and the peripheral area is provided with a second communication port; the third communication port is opposite to the first communication port, the fourth communication port is opposite to the second communication port, so that the first communication port is respectively communicated with the accommodating cavity and the heat dissipation cavity, and the second communication port is respectively communicated with the accommodating cavity and the heat dissipation cavity;
the first heat dissipation structure comprises a shell and a plurality of heat dissipation fins, and the heat dissipation cavity is positioned in the shell;
The shell is provided with a plurality of radiating fins in a protruding mode into the radiating cavity, and/or the shell is provided with a plurality of radiating fins in an protruding mode.
2. The energy storage device of claim 1, further comprising a heat sink cabinet mounted above the receiving cabinet, wherein the first heat dissipating structure is mounted in the heat sink cabinet, and wherein an air supply device is provided on a side wall of the heat sink cabinet.
3. The energy storage device of claim 2, wherein the heat sink is further provided with ventilation openings, and the air supply device and the ventilation openings are located on opposite side walls of the heat sink.
4. The energy storage device of claim 3, wherein the heat sink is further provided with an air guiding structure located outside the heat sink, the air guiding structure having an air duct, and a first opening and a second opening in communication with the air duct, the first opening in communication with the vent, the second opening having an opening oriented obliquely downward or vertically downward.
5. The energy storage device of any of claims 1-4, wherein the side wall of the cabinet comprises an inner panel and an outer panel with an interlayer therebetween.
6. The energy storage device of claim 5, wherein a reinforcement is disposed within the interlayer, the reinforcement being connected to the inner and outer plates, respectively.
7. The energy storage device of claim 5, wherein an insulating structure is disposed within the interlayer.
8. The energy storage device of claim 5, wherein a second heat dissipating structure is disposed within the interlayer.
9. The energy storage device of claim 8, wherein the outer panel of the cabinet is provided with a heat sink in communication with the interlayer.
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| CN202310662613.0A CN116826233B (en) | 2023-06-05 | 2023-06-05 | Energy storage device |
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| CN202310662613.0A CN116826233B (en) | 2023-06-05 | 2023-06-05 | Energy storage device |
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Also Published As
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| CN116826233A (en) | 2023-09-29 |
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