Centralized efficient liquid cooling energy storage container

Abstract

According to the centralized efficient liquid cooling energy storage container, partition plates are arranged between a battery cluster frame and a fire fighting cabinet and between a battery optimizer and a high-voltage control cabinet, a sealing plate is arranged on the top face between the battery cluster frame and the battery optimizer, and a flow guide gap is formed between the adjacent surfaces of the battery cluster frame and the battery optimizer; a liquid cooling plate is arranged on the rear side of each battery pack, an air flow passage is arranged between the lower part of the liquid cooling plate and the adjacent battery pack, and the air flow passage is communicated with the battery optimizers through flow guide gaps. And cold air in air cooling is blown from gaps among the battery packs, so that high-efficiency air speed diversion is realized, the battery packs, a liquid cooling plate and a battery optimizer are subjected to air cooling heat dissipation at the same time, and the upper-inlet and lower-outlet air exhaust design can better ensure that the cold air is in contact with the most batteries and optimizer for cooling, so that the cooling efficiency is improved, and the service life of the battery pack is prolonged. And other independent equipment can be kept independent and does not influence the air duct. Each functional area in the container is provided with independent compartments including a temperature control compartment, a fire-fighting compartment, an electrical compartment and a battery compartment which are separated by fireproof partition walls.

Description

Technical Field

[0001] This article belongs to the technical field of liquid-cooled energy storage boxes, and specifically relates to a centralized and efficient liquid-cooled energy storage container. Background Art

[0002] An energy storage container is an energy storage device that can store electrical energy and release it when needed, providing stable power support for various energy systems. The interior of the energy storage container is equipped with large-capacity batteries and corresponding control systems. When the batteries in the energy storage container are storing and releasing energy, the batteries will generate a lot of heat. The impact of high temperature on the battery is permanent and will shorten the battery life. It will accelerate the aging of the battery, and if the temperature is too high, the battery may catch fire and explode, so general energy storage containers are equipped with heat dissipation devices.

[0003] In order to ensure stable input and output under high voltage and high load conditions, existing energy storage containers use liquid cooling and air cooling to dissipate heat simultaneously. A liquid cooling component is installed at the bottom of each battery pack, and a fan for blowing air into the interior and an exhaust fan for discharging air to the outside are installed at both ends of the energy storage container. In this way, while liquid cooling is being performed, efficient heat transfer is also performed to the liquid cooling component, thereby further improving the heat dissipation efficiency.

[0004] However, due to the large number of internal components of the energy storage container, not only a number of battery packs need to be placed, but also various equipment such as liquid cooling components, fire protection components, high-voltage control components and input and output components need to be installed. The installation of these devices inside the container will cause the air duct originally envisioned to enter at one end and exit at the other end to become messy, and it is also impossible for the cold air to fully contact each battery pack and liquid cooling component, resulting in the heat dissipation effect of liquid cooling plus air cooling failing to meet expectations or even declining, and also generating great noise. Therefore, a technical solution is needed to solve the above problems. Summary of the invention

[0005] In order to solve the above problems, this paper proposes a centralized and efficient liquid-cooled energy storage container. The liquid-cooled energy storage container is provided with a battery cluster rack, a battery optimizer, a fire extinguishing cabinet, a liquid-cooled circulation cabinet, a junction cabinet and a high-voltage control cabinet inside the box body. The battery cluster rack is connected to the battery optimizer on the rear side, and a fire extinguishing cabinet and a high-voltage control cabinet are provided on the right side of the battery cluster rack and the battery optimizer, respectively. A partition plate is provided between the battery cluster rack and the battery optimizer and the fire extinguishing cabinet and the high-voltage control cabinet. A sealing plate is provided on the top surface between the battery cluster rack and the battery optimizer. A flow guide gap is provided between the adjacent surfaces of the battery cluster rack and the battery optimizer. A plurality of battery packs are stacked on the battery cluster rack, and a liquid cooling plate is provided on the bottom surface of each battery pack. The rear end of each battery pack is connected to a battery optimizer. An air flow passage is provided between the lower side of the liquid cooling plate and the adjacent battery packs, and the air flow passage is connected to the battery optimizer through the flow guide gap. , an air inlet is provided at the upper end of the cabinet body surface at the left end of the battery cluster rack, a pressure relief port is provided at the lower side of the air inlet, an end air outlet, a battery air outlet and an optimizer air outlet are respectively provided at the lower side of the cabinet body surface, the end air outlet is arranged below the pressure relief port, the battery air outlet is arranged at the lower right side of the front cabinet body surface of the battery cluster rack, and the optimizer air outlet is arranged at the lower right side of the rear cabinet body surface of the battery optimizer. By directly connecting and installing the originally independently arranged battery optimizer on the rear side of each battery pack, and blowing the cold air in the air cooling through the gap between the battery packs, high-efficiency wind speed diversion is achieved, and the battery pack, liquid cooling plate and battery optimizer are simultaneously cooled by air. The top-in and bottom-out exhaust design can better ensure that the cold air contacts and cools the most batteries and optimizers, while other independent equipment can remain independent and does not affect the air duct.

[0006] The shape of the cabinet is a standard container cabinet. The cabinet doors on the outside of the battery cluster frame and the battery optimizer are sealed doors. A sealing lining is provided inside the top plate of the cabinet. The left end face of the cabinet is provided with an air inlet fan, a pressure relief port, an end air outlet and an external control cabinet. The right end face of the cabinet is provided with a grille on the outer surface of the liquid-cooled control cabinet. Through the partitioned and sealed cabinet, the battery pack and the battery optimizer are independently arranged, thereby ensuring that the cooling cold air will not enter other equipment and cause a decrease in the cooling efficiency. It can also better optimize the air duct to ensure the air cooling effect.

[0007] The battery cluster rack is provided with several cluster racks at horizontal intervals, and each cluster rack is provided with several battery packs stacked up and down. A liquid cooling fire protection pipeline is provided horizontally on the upper side of the top of the battery cluster rack, and the liquid cooling fire protection pipeline is connected to the liquid cooling plate, the fire protection cabinet and the liquid cooling circulation cabinet. By arranging a battery optimizer on the rear side of the battery cluster rack prevented by the array, it is ensured that each battery pack can be optimized independently, and it is also convenient for subsequent maintenance. The liquid cooling fire protection pipeline directly connected at the top also facilitates the overall pipeline layout and is easy to assemble.

[0008] The battery pack is in the shape of a flat rectangular battery pack. A water pipe interface for a liquid cooling plate is provided at the bottom of the front end of the battery pack. A connection port is provided on the rear end surface of the battery pack. Each battery pack is connected to the battery optimizer through the connection port. The lower surface of the liquid cooling plate on the lower side of each battery pack is flush with the bottom surface of the connected battery optimizer. A guide gap is provided under the liquid cooling plate at the bottom of each battery pack so that cold air can flow through the guide gap. This can not only speed up the liquid cooling effect of the liquid cooling plate, but also dissipate heat for the adjacent battery pack below. At the same time, the convective air can be further cooled due to the liquid cooling plate, which is convenient for the subsequent heat dissipation effect of the optimizer.

[0009] The battery optimizer is an integrated same-side direct-connected optimizer. The outer end of the battery optimizer is connected to the high-voltage control cabinet through a busbar. A cable bridge is arranged across the uppermost surface of the battery optimizer. The two ends of the cable bridge are respectively connected to the high-voltage control cabinet and the external control cabinet. The external control cabinet is arranged at the left outer end of the cabinet. By arranging the battery optimizer at the rear side of the battery cluster rack, the independent optimization of each battery pack can be greatly increased, ensuring the refined control of the battery pack by the energy storage container. At the same time, it can also further optimize the space optimization inside the energy storage container, improve the reasonable layout of the air duct, and improve the efficiency of air cooling.

[0010] Beneficial effects:

[0011] By directly installing the originally independent battery optimizer on the rear side of each battery pack and blowing the cold air from the gaps between the battery packs, efficient wind speed diversion can be achieved, and the battery pack, liquid cooling plate and battery optimizer can be cooled by air at the same time. The top-in and bottom-out exhaust design can better ensure that the cold air contacts and cools the most batteries and optimizers, while other independent equipment can remain independent and will not affect the air duct.

[0012] Through the separation and sealing of the cabinet, the battery pack and battery optimizer can be set up independently, so as to ensure that the cooling air will not enter other equipment and cause the cooling efficiency to decrease, and it can also better optimize the air duct to ensure the air cooling effect.

[0013] By setting a battery optimizer on the rear side of the battery cluster rack in the array, it is ensured that each battery pack can be optimized independently, and it can also facilitate subsequent maintenance. The liquid-cooled fire-fighting pipeline directly connected above also facilitates the overall pipeline layout and is easy to assemble.

[0014] By setting a guide gap under the liquid cooling plate at the bottom of each battery pack, cold air can flow through the guide gap, which can not only speed up the liquid cooling effect of the liquid cooling plate, but also dissipate heat for the adjacent battery pack below. At the same time, the air passing through can be further cooled by the liquid cooling plate, which is convenient for the subsequent heat dissipation effect of the optimizer.

[0015] By setting up a battery optimizer on the rear side of the battery cluster rack, the independent optimization of each battery pack can be greatly increased, ensuring the refined control of the battery pack by the energy storage container. At the same time, it can also further optimize the space inside the energy storage container, improve the reasonable layout of the air duct, and improve the efficiency of air cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the front interior of a centralized, high-efficiency liquid-cooled energy storage container;

[0017] Figure 2 It is a schematic diagram of the rear interior of a centralized, high-efficiency liquid-cooled energy storage container;

[0018] Figure 3 It is a top view of the inside of a centralized, high-efficiency liquid-cooled energy storage container;

[0019] In the figure; 1. Fire protection cabinet, 2. Liquid cooling circulation cabinet, 3. Junction cabinet, 4. High-voltage control cabinet, 5. Battery pack, 6. Liquid cooling plate, 7. Liquid cooling fire protection pipeline, 8. Battery air outlet, 9. Air inlet fan, 10. Pressure relief port, 11. End air outlet, 12. Battery optimizer, 13. Optimizer air outlet, 14. External control cabinet. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0021] Fire cabinet 1, liquid cooling circulation cabinet 2, junction cabinet 3, high-voltage control cabinet 4, battery pack 5, liquid cooling plate 6, liquid cooling fire protection pipeline 7, battery air outlet 8, air inlet fan 9, pressure relief port 10, end air outlet 11, battery optimizer 12, optimizer air outlet 13, external control cabinet 14.

[0022] like Figure 1 , 2 , as shown in 3;

[0023] A centralized high-efficiency liquid-cooled energy storage container, wherein a battery cluster rack, a battery optimizer 12, a fire cabinet 1, a liquid-cooled circulation cabinet 2, a junction cabinet 3 and a high-voltage control cabinet 4 are arranged inside the box of the liquid-cooled energy storage container, the rear side of the battery cluster rack is connected with a battery optimizer 12, and the right side of the battery cluster rack and the battery optimizer 12 is respectively provided with a fire cabinet 1 and a high-voltage control cabinet 4, a partition plate is arranged between the battery cluster rack and the battery optimizer 12 and the fire cabinet 1 and the high-voltage control cabinet 4, a sealing plate is arranged on the top surface between the battery cluster rack and the battery optimizer 12, and a flow guide gap is arranged between the adjacent surfaces of the battery cluster rack and the battery optimizer 12, and a plurality of battery packs 5 are stacked on the battery cluster rack, each The bottom surface of each battery pack 5 is provided with a liquid cooling plate 6, and the rear end of each battery pack 5 is connected to a battery optimizer 12. An air flow passage is provided below the liquid cooling plate 6 and between the adjacent battery packs 5, and the air flow passage is connected to the battery optimizer 12 through a guide gap. An air inlet fan 9 is provided at the upper end of the cabinet outer surface at the left end of the battery cluster rack, and a pressure relief port 10 is provided at the lower side of the air inlet fan 9. An end air outlet 11, a battery air outlet 8 and an optimizer air outlet 13 are respectively provided on the lower side of the cabinet outer surface. The end air outlet 11 is provided below the pressure relief port 10, the battery air outlet 8 is provided at the lower right side of the front cabinet surface of the battery cluster rack, and the optimizer air outlet 13 is provided at the lower side of the cabinet outer surface. At the lower rightmost side of the rear cabinet surface of the battery optimizer 12, the cabinet is shaped like a standard container cabinet, the battery cluster rack of the cabinet and the cabinet doors on the outside of the battery optimizer 12 are sealed doors, a sealing lining is provided inside the top plate of the cabinet, the left end face of the cabinet is provided with an air inlet fan 9, a pressure relief port 10, an end air outlet 11 and an external control cabinet 14, and the right end face of the cabinet is provided with a grille on the outer surface of the liquid-cooled control cabinet, the battery cluster rack is provided with a plurality of cluster racks in a transversely spaced manner, each cluster rack is provided with a plurality of battery packs 5 in a stacked manner up and down, a liquid-cooled fire-fighting pipeline 7 is provided transversely on the upper side of the top of the battery cluster rack, and the liquid-cooled fire-fighting pipeline 7 is connected to the liquid-cooling plate 6, the fire-fighting cabinet 1 and the liquid-cooling circulation cabinet 2, and the battery pack 5 is shaped like a flat A rectangular battery pack 5 is provided with a water pipe interface of a liquid cooling plate 6 below the front end of the battery pack 5, and a connection port is provided on the rear end surface of the battery pack 5. Each battery pack 5 is interconnected with a battery optimizer 12 through the connection port. The lower surface of the liquid cooling plate 6 on the lower side of each battery pack 5 is flush with the bottom surface of the connected battery optimizer 12. The battery optimizer 12 is an integrated same-side direct-connected optimizer. The outer end of the battery optimizer 12 is interconnected with the high-voltage control cabinet 4 through a busbar. A cable bridge is horizontally provided on the uppermost surface of the battery optimizer 12. The two ends of the cable bridge are respectively connected to the high-voltage control cabinet 4 and the external control cabinet 14. The external control cabinet 14 is arranged at the left outer end of the cabinet.

[0024] Implementation examples;

[0025] During use of the energy storage container, the air is cooled by the air intake fan 9 from the upper left end of the cabinet. The cold air is first conducted from top to bottom between the battery packs 5, and then conducted to the battery optimizer 12 through the guide gap between the liquid cooling plate 6 and the battery pack 5 below. In the process of passing through the liquid cooling plate 6, not only the air cooling and heat dissipation of the upper surface of the battery pack 5 are achieved, but also the low temperature of the liquid cooling plate 6 is used to further cool the cold air, so that when the battery optimizer 12 is cooled, the cooling effect of the battery optimizer 12 without liquid cooling is improved, and finally, through the battery air outlet 8, the optimization air outlet and the end air outlet 11 all arranged at the bottom, a complete air duct diversion is achieved at the lower end, thereby ensuring the conduction effect of the cold air.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A centralized high-efficiency liquid-cooled energy storage container, wherein a battery cluster rack, a battery optimizer, a fire cabinet, a liquid-cooled circulation cabinet, a junction cabinet and a high-voltage control cabinet are arranged inside the container, characterized in that: The rear side of the battery cluster rack is connected with a battery optimizer, and the right side of the battery cluster rack and the battery optimizer are respectively provided with a fire cabinet and a high-voltage control cabinet, and a partition plate is provided between the battery cluster rack and the battery optimizer and the fire cabinet and the high-voltage control cabinet, and a sealing plate is provided on the top surface between the battery cluster rack and the battery optimizer, and a flow guide gap is provided between the adjacent surfaces of the battery cluster rack and the battery optimizer. A plurality of battery packs are stacked on the battery cluster rack, and a liquid cooling plate is provided on the bottom surface of each battery pack. The rear end of each battery pack is connected to a battery optimizer, and the liquid cooling plate An air flow passage is provided below and between the adjacent battery groups, and the air flow passage is connected with the battery optimizer through the guide gap. An air inlet is provided at the upper end of the outer surface of the cabinet at the left end of the battery cluster rack, and a pressure relief port is provided at the lower side of the air inlet. An end air outlet, a battery air outlet and an optimizer air outlet are respectively provided on the lower side of the outer surface of the cabinet, the end air outlet is provided below the pressure relief port, the battery air outlet is provided at the lower right side of the front cabinet surface of the battery cluster rack, and the optimizer air outlet is provided at the lower right side of the rear cabinet surface of the battery optimizer.

2. A centralized high-efficiency liquid-cooled energy storage container according to claim 1, characterized in that: The cabinet is in the shape of a standard container cabinet. The cabinet doors on the outside of the battery cluster frame and the battery optimizer are sealed doors. A sealing lining is provided inside the top plate of the cabinet. The left end face of the cabinet is provided with an air inlet fan, a pressure relief port, an end air outlet and an external control cabinet. The right end face of the cabinet is provided with a grille on the outer surface of the liquid cooling control cabinet.

3. A centralized high-efficiency liquid-cooled energy storage container according to claim 1, characterized in that: The battery cluster rack is provided with several cluster racks at intervals in a transverse manner, and each cluster rack is provided with several battery packs stacked up and down. A liquid cooling fire protection pipeline is provided transversely on the upper side of the top of the battery cluster rack, and the liquid cooling fire protection pipeline is connected to the liquid cooling plate, the fire protection cabinet and the liquid cooling circulation cabinet.

4. A centralized high-efficiency liquid-cooled energy storage container according to claim 1, characterized in that: The battery pack is in the shape of a flat rectangular battery pack, a water pipe interface for a liquid cooling plate is provided below the front end of the battery pack, a connection port is provided on the rear end surface of the battery pack, each battery pack is interconnected with a battery optimizer through the connection port, and the lower surface of the liquid cooling plate on the lower side of each battery pack is flush with the bottom surface of the connected battery optimizer.

5. A centralized high-efficiency liquid-cooled energy storage container according to claim 1, characterized in that: The battery optimizer is an integrated same-side direct-connected optimizer. The outer end of the battery optimizer is connected to the high-voltage control cabinet through a busbar. A cable bridge is horizontally arranged on the uppermost surface of the battery optimizer. The two ends of the cable bridge are respectively connected to the high-voltage control cabinet and the external control cabinet. The external control cabinet is arranged at the left outer end of the cabinet.

Images