CN220086161U

CN220086161U - Container energy storage system

Info

Publication number: CN220086161U
Application number: CN202320877405.8U
Authority: CN
Inventors: 兰欢
Original assignee: Hangzhou Xieneng Technology Co ltd
Current assignee: Hangzhou Xieneng Technology Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-11-24
Anticipated expiration: 2033-04-14

Abstract

The utility model provides a container energy storage system, which comprises a container, a plurality of battery packs and a battery rack unit, wherein the battery rack unit comprises a front-row battery rack assembly and a rear-row battery rack assembly, the front-row battery rack assembly and the rear-row battery rack assembly are provided with the same number of energy storage battery racks, the energy storage battery racks are used for installing the battery packs, the front-row battery rack assembly and the rear-row battery rack assembly are arranged at intervals in a back-to-back manner, and a heat dissipation channel is arranged between the front-row battery rack assembly and the rear-row battery rack assembly; the air flow channel is positioned above the battery frame unit, the air flow channel is communicated with the heat dissipation channel, and cooling air flows from the air flow channel to the heat dissipation channel and sequentially flows out from the rear side and the front side of the energy storage battery frame so as to cool the battery pack. The utility model can timely radiate heat and cool the battery pack, and can expand the capacity according to the capacity requirement.

Description

Container energy storage system

Technical Field

The utility model relates to the technical field of energy storage, in particular to a container energy storage system.

Background

Along with the vigorous development of energy storage industry, energy storage system output is higher and higher, and the more the electric power demand of market to energy storage system is also bigger simultaneously, in order to satisfy market demand, need use more battery package to enlarge energy storage system's capacity, a large amount of battery package installs the work in the container, and the charge and discharge process seed can produce more heat for the temperature in the container rises, influences the normal operating of entire system.

In order to solve the problem, the prior art scheme is to add an air conditioner in the container to adjust the temperature in the container, but the air conditioner can only reduce the overall environmental temperature in the container, can not timely dissipate the heat generated by the battery pack, and the battery pack is easy to overheat and spontaneous combustion for a long time, so that the battery pack is damaged.

Disclosure of Invention

Therefore, the present utility model is directed to a container energy storage system, so as to timely dissipate heat of a battery pack and reduce risk of spontaneous combustion.

In order to achieve the above object, the present utility model provides a container energy storage system, which comprises a container and a plurality of battery packs, and further comprises a battery rack unit, wherein the battery rack unit comprises a front row of battery rack assemblies and a rear row of battery rack assemblies, the front row of battery rack assemblies and the rear row of battery rack assemblies are provided with the same number of energy storage battery racks, the energy storage battery racks are used for installing the battery packs, the front row of battery rack assemblies and the rear row of battery rack assemblies are arranged at intervals away from each other, and a heat dissipation channel is arranged between the front row of battery rack assemblies and the rear row of battery rack assemblies; the air flow channel is positioned above the battery frame unit, the air flow channel is communicated with the heat dissipation channel, and cooling air flows from the air flow channel to the heat dissipation channel and sequentially flows out from the rear side and the front side of the energy storage battery frame so as to cool the battery pack.

Preferably, the airflow air channel comprises a first air channel and a second air channel, the first air channel is positioned above the front-row battery rack assembly, the second air channel is positioned above the rear-row battery rack assembly, the first air channel comprises a rectangular air channel and a horn-shaped air channel, one end of the horn-shaped air channel is connected with the rectangular air channel, and the other end of the horn-shaped air channel extends in an expanding way away from the rectangular air channel; the second air duct and the first air duct are identical in structure and are symmetrically arranged.

Preferably, the rectangular air duct comprises an air inlet and an air outlet, the horn-shaped air duct comprises a spreading port, the air inlet is communicated with the air outlet, the air outlet is communicated with the spreading port, the spreading port is larger than the air outlet, and the spreading port is communicated with the heat dissipation channel.

Preferably, the air flow duct further comprises a flow dividing plate, the cross section of the flow dividing plate is in a V shape, the flow dividing plate is located between the first air duct and the second air duct, and the flow dividing plate is used for guiding cooling air flow flowing out of the flow expansion opening to the heat dissipation channel.

Preferably, the air flow duct further comprises a left end plate and a right end plate, the left end plate is connected with the left side of the first air duct and the left side of the second air duct, the right end plate is connected with the right sides of the first air duct and the second air duct, and the splitter plate is respectively abutted with the left end plate and the right end plate.

Preferably, the first air duct, the second air duct and the splitter plate are all a plurality of, respectively distributed side by side in proper order, two adjacent first air duct butt, two adjacent second air duct butt, two adjacent splitter plate butt, every first air duct corresponds the same quantity with the second air duct energy storage battery frame.

Preferably, the left end plate comprises a closed section and a limit section, the limit section is positioned below the closed section, and two sides of the closed section protrude out of the limit section; the bottom plate of the horn-shaped air duct is provided with a positioning plate in a downward extending mode, and the bottom end of the positioning plate is flush with the bottom end of the limiting section; after the battery frame unit is installed, the sealing section is located above the battery frame unit, the locating plate is abutted to the back face of the front-row battery frame assembly, and the structure of the right end plate is identical to that of the left end plate.

Preferably, the container comprises a shell, a plurality of front box doors and a plurality of rear box doors, wherein the front box doors are provided with circulating air inlets and circulating air outlets, each circulating air outlet corresponds to the air inlets one by one, each circulating air inlet is communicated with the interior of the container, and the rear box doors are identical to the front box doors in structure.

Preferably, the container further comprises a plurality of refrigeration devices, the plurality of refrigeration devices are respectively connected with the plurality of front box doors or rear box doors, each refrigeration device comprises an air inlet and an air supply opening, each air inlet is correspondingly communicated with one circulating air inlet, and each air supply opening is correspondingly communicated with one circulating air outlet.

Preferably, the container further comprises a plurality of protective covers, each protective cover corresponds to one refrigerating device, the plurality of protective covers are connected with the front box door or the rear box door, the protective covers are provided with an external air suction opening and an external air outlet, the external air suction opening is communicated with the air inlet, and the external air outlet is communicated with the air supply opening.

Compared with the prior art, the technical scheme of the utility model has the following advantages: through the back-to-back interval setting of two battery rack components, utilize the space between two battery rack components as the heat dissipation passageway, make the cooling air current flow from the rear end of heat dissipation passageway follow battery package to the front end of battery package to timely heat dissipation cooling to the battery package, radiating efficiency is high and reduce cost. The energy storage system can be expanded by splicing a plurality of standardized energy storage battery frames; the lengths of the air flow channels can be adjusted according to the number of the energy storage battery frames by splicing the plurality of standardized first air channels and the plurality of standardized second air channels; each first air channel, each second air channel, each flow dividing plate and the corresponding plurality of energy storage battery frames form a minimum energy storage unit, and the minimum energy storage units are mutually connected, so that the transportation is convenient. The container is convenient to carry out internal circulation heat dissipation cooling in the container through setting up circulation air outlet and circulation air intake, can carry out external circulation heat dissipation cooling through setting up outside air extraction opening and outside air exit. The container energy storage system provided by the utility model can timely radiate heat and cool the battery pack, and can expand the capacity according to the capacity requirement.

Drawings

Fig. 1 is a schematic view of a battery rack unit according to an embodiment of the present utility model;

fig. 2 is a schematic view of an energy storage battery rack according to an embodiment of the present utility model;

FIG. 3 is a side view of a battery rack unit and an airflow duct provided by an embodiment of the present utility model;

FIG. 4 is a schematic diagram of an airflow duct according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of an assembled battery rack unit and an airflow duct according to an embodiment of the present utility model;

fig. 6 is a schematic view of a container provided by an embodiment of the present utility model.

In the figure:

10. a battery rack unit; 11. a front row battery rack assembly; 111. an energy storage battery rack; 12. a rear battery rack assembly; 13. a heat dissipation channel; 14. a support; 20. an air flow duct; 21. a first air duct; 211. a rectangular air duct; 212. an air inlet; 213. an air outlet; 214. a horn-shaped air duct; 215. a flow expansion port; 216. a positioning plate; 22. a second air duct; 23. a diverter plate; 24. a left end plate; 241. a closing section; 242. a limiting section; 25. a right end plate; 30. a container; 31. a housing; 32. a front door; 34. a protective cover; 341. an external suction port; 342. an external air outlet.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings, but the present utility model is not limited to these embodiments only. The utility model is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the utility model.

In the following description of preferred embodiments of the utility model, specific details are set forth in order to provide a thorough understanding of the utility model, and the utility model will be fully understood to those skilled in the art without such details.

The utility model is more particularly described by way of example in the following paragraphs with reference to the drawings. It should be noted that the drawings are in a simplified form and are not to scale precisely, but rather are merely intended to facilitate and clearly illustrate the embodiments of the present utility model.

Fig. 1 to 3 are schematic diagrams of a battery rack unit according to an embodiment of the utility model. The container type energy storage system is characterized in that a battery pack for charging and discharging is arranged in a container, wherein the battery pack consists of a plurality of single batteries, the plurality of battery packs are connected in series to form a battery cluster, and the plurality of battery clusters are connected in parallel to form a battery stack. In general, a battery rack is disposed in a container, and a battery pack is placed on the battery rack to perform processes such as wiring and mounting, and one battery cluster may be placed on one battery rack, or a plurality of battery clusters may be placed on one battery rack. According to the container energy storage system provided by the utility model, the used energy storage battery frames 111 are single-row multi-installation-layer battery frames, each installation layer is provided with a battery pack, each energy storage battery frame 111 is provided with a battery cluster, a plurality of energy storage battery frames 111 are connected in parallel to form a battery frame assembly, and each battery frame assembly is provided with a battery stack.

As shown in fig. 1, the battery rack unit 10 provided in this embodiment includes at least two battery rack assemblies, at least two battery stacks may be installed, and the two battery rack assemblies are arranged in a back-to-back manner, and are distributed into a front-row battery rack assembly 11 and a back-row battery rack assembly 12, when the front-row battery rack assembly 11 installs a battery pack, the battery pack may be placed in the front, and when the back-row battery rack assembly 12 installs a battery pack, the battery pack may be placed in the back, so that the battery packs do not affect each other, if more battery stacks need to be installed, the battery rack assemblies may be increased again in the left and right sides of the battery rack unit 10 for capacity expansion, thereby further improving the capacity of the energy storage system. As shown in fig. 2, in this embodiment, the energy storage battery rack 111 is hollowed out, and the front and rear sides of the energy storage battery rack are penetrated. As shown in fig. 3, a certain interval is provided between the front and rear rows of battery rack assemblies, and the interval forms a heat dissipation channel 13, and then the rear side of each mounting layer on the energy storage battery rack 111 is communicated with the heat dissipation channel 13.

As shown in fig. 3, above the battery rack unit 10, an air flow duct 20 is provided, the air flow duct 20 is communicated with a refrigeration device (not shown in the figure) and is communicated with a heat dissipation channel 13, cooling air enters the air flow duct 20 from the refrigeration device and flows into the heat dissipation channel 13, and then enters from the rear side of each mounting layer and flows out from the front side, so that heat dissipation and temperature reduction are realized on the battery pack on each mounting layer, and the risk of spontaneous combustion is reduced. According to the container energy storage system provided by the utility model, the space formed by the arrangement positions of the battery rack components is used as the heat dissipation channel 13, a heat dissipation air duct is not required to be independently manufactured, and the cost is reduced.

In some embodiments, the supporting members 14 may be disposed between the front and rear rows of battery rack assemblies, the supporting members 14 are respectively connected to the back portions of the two battery rack assemblies, and the supporting members 14 are disposed at intervals in the up-down direction and the left-right direction, so that the strength and the integrity of the battery rack unit 1 can be improved through the supporting members 14, and the battery rack unit is convenient to transport stably.

As shown in fig. 4, the airflow duct 20 includes a first duct 21 and a second duct 22, wherein the first duct 21 includes a rectangular duct 211 and a horn-shaped duct 214, the rectangular duct 211 is hollow and has two ends penetrating, one end of the rectangular duct has an air inlet 212, and the other end has an air outlet 213. One end of the horn-shaped air duct 214 is communicated with the air outlet 213, and the other end of the horn-shaped air duct extends and expands to form a flow expansion opening 215 in a direction away from the rectangular air duct 211, so that the air outlet 213 is communicated with the flow expansion opening 215, and the flow expansion opening 215 is larger than the air outlet 213. The expansion port 215 is communicated with the heat dissipation channel 13, and the cooling air flow enters the rectangular air channel 211 from the air inlet 212, then enters the horn-shaped air channel 214 from the air outlet 213, and diffuses towards the two sides of the horn-shaped air channel 214, and finally enters the heat dissipation channel 13 from the expansion port 215. Through the diffusion in the horn-shaped air duct, the air flow air duct 20 can correspond to more energy storage battery frames 111, so that more battery packs can be cooled, and the heat dissipation efficiency is improved. As shown in fig. 4, at one end of the expansion port 215, the bottom plate of the trumpet-shaped air duct 214 extends downwards to form a positioning plate 216, and the battery rack assembly is formed by splicing each energy storage battery rack 111 after pushing the energy storage battery rack 111 into a container, and the back of each energy storage battery rack 111 is abutted against the positioning plate 216 to realize positioning, so that each energy storage battery rack is side by side, and the assembly is convenient. As shown in fig. 4, the second air duct 22 has the same structure as the first air duct 21, and is symmetrically disposed, wherein the first air duct 21 is located above the front-row battery rack assembly 11, and the second air duct 22 is located above the rear-row battery rack assembly 12. As shown in fig. 4, a flow dividing plate 23 is provided between the first air duct 21 and the second air duct 22, the flow dividing plate 23 has a V shape with an open end facing upward and a closed end facing downward, that is, the closed end faces the direction of the heat dissipation path 13, and the length direction of the flow dividing plate 23 coincides with the left-right direction of the battery rack unit 10. A flow dividing plate 23 is provided between the first air duct 21 and the second air duct 22, and the cooling air flow is prevented from convection impact when flowing out from the two flow expansion openings, and is guided into the heat dissipation channel 13 through the flow dividing plate 23. As shown in fig. 4, the left side of the air flow channel 20 is connected with a left end plate 24, the right side is connected with a right end plate 25, and the air flow channel 20 is closed at two ends through the left end plate 24 and the right end part 25, so that cooling air flow is prevented from flowing out from the two ends to influence the heat dissipation effect. Specifically, the left end 24 is T-shaped, and includes a sealing section 241 and a limiting section 242, the limiting section 242 is located below the sealing section 241, and two sides of the sealing section 241 protrude from the limiting section 242, the bottom end of the limiting section 242 is flush with the bottom end of the positioning plate 216, after the battery rack unit 10 is installed, the sealing section 24 is located above the battery rack unit 10, and in this embodiment, the right end plate 25 and the left end plate 24 have the same structure.

As shown in fig. 5, the first air duct 21, the second air duct 22 and the splitter plates 23 are all plural and are sequentially distributed side by side, two adjacent first air ducts 21 or second air ducts 22 are abutted through the trumpet-shaped air duct, and two adjacent splitter plates 23 are abutted. In this embodiment, the first air duct 21, the second air duct 22 and the diverter plate 23 are all connected to the container by hangers (not shown).

Please refer to fig. 6, which is a schematic diagram of a container according to the present utility model. The container 30 includes a housing 31, a plurality of front doors 32 and a plurality of rear doors (not shown in the figure), and the inner side surface of each front door 32 is provided with a circulation air inlet and a circulation air outlet (not shown in the figure), in this embodiment, the circulation air inlet and the circulation air outlet are composed of a plurality of small round holes arranged in matrix, and under the condition that the plurality of front doors 32 are closed, the position of each circulation air outlet corresponds to the position of one air inlet 212, so that air flow can directly enter the air inlet 212 from the circulation air outlet, and each circulation air inlet is communicated with the space on the front side of the energy storage battery rack 111, so that air flow after absorbing heat of a battery pack can directly enter the circulation air inlet. The outer side surface of each front door 32 is provided with a refrigerating device (not shown in the figure), and the refrigerating device comprises air inlets and air outlets, wherein each air inlet is correspondingly communicated with one circulating air inlet, and each air outlet is correspondingly communicated with one circulating air outlet. When the refrigeration equipment works, air flow after absorbing heat of the battery pack flows into the air inlet from the circulating air inlet so as to enter the refrigeration equipment, cooling air flow is formed through refrigeration, is conveyed to the circulating air outlet from the air supply outlet, reaches the first air duct 21 through the circulating air outlet and the air inlet 212, enters the heat dissipation through hole 13 through the expansion port 215, flows to the front side from the rear side of the energy storage battery rack 111 so as to cool and dissipate heat of the battery pack, and finally, air flow after absorbing heat of the battery pack returns to the air inlet of the refrigeration equipment from the circulating air inlet so as to complete internal circulation work of primary heat dissipation and cooling. In this embodiment, the plurality of front doors 32 are hinged in sequence, the plurality of front doors 32 can be folded to open, the structure of the rear door is identical to that of the front door 32, and the circulation air outlet of the rear door corresponds to the air inlet of the second air duct.

As shown in fig. 6, a protective cover 34 is further installed on the outer side surface of each of the front door 32 and the rear door, and each protective cover 34 corresponds to one refrigeration device, so as to protect the refrigeration device from dust, water, and the like. The protective cover 34 is provided with an external air suction opening 341 and an external air outlet 342, the external air suction opening 341 is communicated with an air inlet of the corresponding refrigeration equipment, and the external air outlet 342 is communicated with an air supply opening of the corresponding refrigeration equipment. When the refrigeration equipment works, outdoor air can be extracted to perform refrigeration, the outdoor air enters an air inlet of the refrigeration equipment from an external air suction opening 341, cooling air flow is formed after refrigeration, the cooling air flow enters the first air duct 21 through the air supply opening and the circulating air outlet 322, heat of the battery pack is radiated and cooled, and air flow after heat of the battery pack is absorbed returns to the refrigeration equipment from the circulating air inlet 321 and is discharged outdoors through the air supply opening and the external air outlet 324. Thereby completing the external circulation work of once heat dissipation and cooling. In this embodiment, the container energy storage system may choose to perform internal circulation cooling or external circulation cooling according to the actual situation of the project site.

Although the embodiments have been described and illustrated separately above, and with respect to a partially common technique, it will be apparent to those skilled in the art that alternate and integration may be made between embodiments, with reference to one embodiment not explicitly described, and reference may be made to another embodiment described.

The above-described embodiments do not limit the scope of the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments should be included in the scope of the present utility model.

Claims

1. A container energy storage system comprising a container (30) and a plurality of battery packs, further comprising:

the battery rack unit (10), the battery rack unit (10) comprises a front row battery rack assembly (11) and a rear row battery rack assembly (12), the front row battery rack assembly (11) and the rear row battery rack assembly (12) are provided with energy storage battery racks (111) with the same quantity, the energy storage battery racks (111) are used for installing the battery packs, the front row battery rack assembly (11) and the rear row battery rack assembly (12) are arranged at intervals in a back-to-back mode, and a heat dissipation channel (13) is arranged between the front row battery rack assembly (11) and the rear row battery rack assembly (12);

the air flow channel (20) is positioned above the battery frame unit (10), the air flow channel (20) is communicated with the heat dissipation channel (13), and cooling air flows into the heat dissipation channel (13) from the air flow channel (20) and sequentially flows out from the rear side and the front side of the energy storage battery frame (111) so as to dissipate heat of the battery pack and cool the battery pack;

the airflow air duct (20) comprises a first air duct (21) and a second air duct (22), the first air duct (21) is positioned above the front-row battery rack assembly (11), the second air duct (22) is positioned above the rear-row battery rack assembly (12), the first air duct (21) comprises a rectangular air duct (211) and a horn-shaped air duct (214), one end of the horn-shaped air duct (214) is connected with the rectangular air duct (211), and the other end of the horn-shaped air duct (214) extends in an expanding mode towards a direction away from the rectangular air duct (211); the second air duct (22) and the first air duct (21) are identical in structure and symmetrically arranged.

2. The container energy storage system according to claim 1, wherein the rectangular air duct (211) comprises an air inlet (212) and an air outlet (213), the horn-shaped air duct (214) comprises a diffuser (215), the air inlet (212) is in communication with the air outlet (213), the air outlet (213) is in communication with the diffuser (215), the diffuser (215) is larger than the air outlet (213), and the diffuser is in communication with the (215) heat dissipation channel (13).

3. The container energy storage system according to claim 2, wherein the air flow duct (20) further comprises a flow dividing plate (23), the flow dividing plate (23) having a V-shaped cross section, the flow dividing plate (23) being located between the first air duct (21) and the second air duct (22), the flow dividing plate (23) being configured to guide the cooling air flow exiting from the flow expansion opening (215) to the heat dissipation channel (13).

4. A container energy storage system according to claim 3, wherein the air flow duct (20) further comprises a left end plate (24) and a right end plate (25), the left end plate (24) is connected to the left side of the first duct (21) and the second duct (22), the right end plate (25) is connected to the right side of the first duct (21) and the second duct (22), and the splitter plate (23) is in abutment with the left end plate (24) and the right end plate (25), respectively.

5. The container energy storage system according to claim 4, wherein a plurality of first air channels (21), second air channels (22) and flow dividing plates (23) are respectively distributed side by side in sequence, two adjacent first air channels (21) are abutted, two adjacent second air channels (22) are abutted, two adjacent flow dividing plates (23) are abutted, and each first air channel (21) and each second air channel (22) correspond to the same number of energy storage battery frames (111).

6. The container energy storage system of claim 5, wherein the left end plate (24) comprises a closed section (241) and a limit section (242), the limit section (242) being located below the closed section (241), both sides of the closed section (241) protruding the limit section (242); a positioning plate (216) is arranged on the bottom plate of the horn-shaped air duct (214) in a downward extending mode, and the bottom end of the positioning plate (216) is flush with the bottom end of the limiting section (242); after the battery frame unit (10) is installed, the sealing section (241) is located above the battery frame unit (10), the locating plate (216) is abutted to the back surface of the front-row battery frame assembly (11), and the structure of the right end plate (25) is the same as that of the left end plate (24).

7. The container energy storage system according to claim 2, wherein the container (30) comprises a housing (31), a plurality of front doors (32) and a plurality of rear doors, the front doors (32) are provided with a circulating air inlet and a circulating air outlet, each circulating air outlet corresponds to the air inlet (212) one by one, each circulating air inlet is communicated with the interior of the container (30), and the rear doors are identical in structure with the front doors (32).

8. The container energy storage system of claim 7, wherein said container (30) further comprises a plurality of refrigeration units, each of said refrigeration units being coupled to a plurality of said front (32) or rear doors, respectively, each of said refrigeration units comprising an air inlet and an air outlet, each of said air inlets being in communication with one of said circulating air inlets, each of said air outlets being in communication with one of said circulating air outlets.

9. The container energy storage system according to claim 8, wherein the container (30) further comprises a plurality of protective covers (34), each protective cover (34) corresponds to one of the refrigerating devices, the plurality of protective covers (34) are connected with the front door (32) or the rear door, the protective covers (34) are provided with an external air suction opening (341) and an external air discharge opening (342), the external air suction opening (341) is communicated with the air inlet, and the external air discharge opening (342) is communicated with the air supply opening.