CN-224217528-U - Distributed liquid-cooled energy storage box and energy storage system

Abstract

The embodiment of the application relates to the technical field of energy storage, in particular to a distributed liquid-cooled energy storage box and an energy storage system. The application aims to solve the problem that the liquid cooling unit is difficult to adapt to heat dissipation requirements under different charge and discharge multiplying powers. The application provides a distributed liquid-cooled energy storage box which comprises a box body, at least one energy storage module and at least one liquid-cooled unit, wherein the at least one energy storage module is arranged in the box body and comprises at least one battery pack which is stacked. The at least one liquid cooling unit is arranged between the energy storage module and the top wall and is used for conveying cooling liquid to the liquid cooling plate in the at least one battery pack. At least one liquid cooling unit is arranged between the energy storage module and the top wall, so that the vertical space of the energy storage box can be fully utilized, the occupation of the horizontal space is reduced, and the occupied density of the energy storage box is ensured. When the charge-discharge multiplying power of the battery pack is changed, different numbers of liquid cooling units can be configured, and the heat dissipation requirements under different charge-discharge multiplying powers can be flexibly adapted.

Inventors

• WANG YONGLING
• FANG JIE
• YU SHIJIANG
• ZENG ZHI
• YE WANXIANG

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20250326

Claims (15)

1. 1. A distributed liquid cooled energy storage tank comprising: The box body comprises a side wall, a top wall and a bottom wall which are oppositely arranged, wherein the top wall is provided with an air outlet, and the side wall is provided with an air inlet; At least one energy storage module, wherein the at least one energy storage module is arranged in the box body and comprises at least one battery pack which is stacked; the liquid cooling unit is arranged between the energy storage module and the top wall, is communicated with the air outlet and the air inlet, and is used for conveying cooling liquid to the liquid cooling plate in the at least one battery pack.
2. 2. The tank of claim 1 wherein the at least one energy storage module comprises a plurality of first energy storage modules aligned along a length of the tank, and the at least one fluid cooling unit comprises a plurality of first fluid cooling units aligned along the length.
3. 3. The tank of claim 2, wherein the side walls include a first side wall and a second side wall disposed opposite to each other along a width direction of the tank, the air inlet includes a first air inlet and a second air inlet, the first side wall is provided with the first air inlet, the second side wall is provided with the second air inlet, and the liquid cooling unit is disposed between the first air inlet and the second air inlet.
4. 4. The tank of claim 3 wherein the first liquid cooling unit comprises a refrigeration unit, a first heat exchanger, a second heat exchanger, and a fan; The refrigerating unit is communicated with the liquid cooling plate of the battery pack and is used for adjusting the temperature of the liquid cooling plate of the battery pack through a compressor, a condenser and an evaporator in the refrigerating unit, and the refrigerating unit is arranged at the first air inlet; The first heat exchanger and the second heat exchanger are arranged at intervals along the width direction of the box body, the first heat exchanger and the top wall are arranged at an included angle, the second heat exchanger and the top wall are arranged at an included angle, the air inlet surface of the first heat exchanger is communicated with the first air inlet, and the air inlet surface of the second heat exchanger is communicated with the second air inlet; The fan is arranged at the air outlet, and the air inlet of the fan is respectively communicated with the air outlet surface of the first heat exchanger and the air outlet surface of the second heat exchanger.
5. 5. The tank of claim 1 or 2, wherein the side wall is provided with a first air inlet, and the top wall is provided with the air outlet and a second air inlet, the second air inlet being closer to the liquid cooling unit than the air outlet.
6. 6. The tank of claim 5 wherein the liquid cooling unit comprises a refrigeration unit, a heat exchanger, and a fan; The refrigerating unit is communicated with the liquid cooling plate of the battery pack and is used for adjusting the temperature of the liquid cooling plate of the battery pack through a compressor, a condenser and an evaporator in the refrigerating unit, and the refrigerating unit is arranged at the first air inlet; The heat exchanger and the refrigerating unit are arranged at intervals along the width direction, the heat exchanger and the top wall are arranged at an included angle, and the air inlet surface of the heat exchanger is respectively communicated with the first air inlet and the second air inlet; The fan is arranged at the air outlet, and the air inlet of the fan is communicated with the air outlet surface of the heat exchanger.
7. 7. The tank of claim 5 or 6, wherein the at least one energy storage module comprises a plurality of second energy storage modules arranged in a width direction of the tank, and the at least one liquid cooling unit comprises a plurality of second liquid cooling units arranged in the width direction.
8. 8. The tank of claim 7 wherein the refrigeration unit is in communication with the liquid cooling plate of the battery pack via liquid cooling lines comprising a main line and at least one liquid dividing line, each liquid dividing line in communication with each of the battery packs in one of the second energy storage modules, each liquid dividing line in communication with the main line, the liquid cooling unit for delivering a cooling liquid to the main line.
9. 9. The energy storage box of claim 8, wherein the first air inlet comprises a first sub air inlet and a second sub air inlet, a first side wall is provided with a first box door and the first sub air inlet, the first sub air inlet is positioned above the first box door, a second side wall is provided with a second box door and the second sub air inlet, and the second sub air inlet is positioned above the second box door; The at least one energy storage module comprises two rows of second energy storage modules which are arranged along the width direction, wherein a liquid separation pipeline is arranged between one row of second energy storage modules and the first box door, and a liquid separation pipeline is arranged between the other row of second energy storage modules and the second box door.
10. 10. The energy storage tank of any one of claims 1-9, wherein the energy storage tank comprises an explosion venting plate, a partition is arranged between the top wall and the energy storage module, an explosion venting opening is formed in the partition, the explosion venting plate covers the explosion venting opening, and the explosion venting plate is connected with the partition.
11. 11. The tank of claim 10 wherein the explosion relief plate opens when the surface of the explosion relief plate facing the energy storage module is subjected to a greater pressure than the surface of the explosion relief plate facing the top wall.
12. 12. An energy storage tank as claimed in claim 10 or 11, wherein the side wall between the top wall and the partition is provided with an opening; the opening is internally provided with a blade, the blade is rotatably connected with the side wall, the rotating shaft of the blade is parallel to the surface of the side wall, and the blade is used for sealing the opening; The blade comprises a first surface and a second surface, wherein the first surface faces the inside of the energy storage box, the second surface faces the outside of the energy storage box, and when the pressure born by the first surface is larger than the pressure born by the second surface, an included angle exists between the blade and the side wall.
13. 13. A distributed liquid cooled energy storage tank comprising: The box body comprises a side wall, a top wall and a bottom wall which are oppositely arranged, wherein the top wall is provided with an air outlet, and the side wall is provided with an air inlet; The energy storage module is arranged in the box body and comprises at least one battery pack which is stacked; the liquid cooling unit is arranged between the energy storage module and the side wall, is communicated with the air outlet and the air inlet, and is used for conveying cooling liquid to the liquid cooling plate in the at least one battery pack.
14. 14. A distributed liquid cooled energy storage tank comprising: The box body comprises side walls, a top wall and a bottom wall which are oppositely arranged, a box door is arranged on the side walls, an air inlet and an air outlet are arranged on the box door, and the position of the air outlet is higher than that of the air inlet; The energy storage module is arranged in the box body and comprises at least one battery pack which is stacked; The liquid cooling unit is arranged on the box door and is communicated with the air outlet and the air inlet, and the liquid cooling unit is used for conveying cooling liquid to the liquid cooling plate in the at least one battery pack.
15. 15. An energy storage system comprising a plurality of energy storage boxes according to any one of claims 1 to 14 arranged at intervals, wherein a plurality of the energy storage boxes are arranged at intervals along the length direction of the box body, a plurality of the energy storage boxes are arranged at intervals along the width direction of the box body, and the second side walls of two adjacent energy storage boxes are arranged opposite to each other in the width direction of the box body.

Description

Distributed liquid-cooled energy storage box and energy storage system Technical Field The application relates to the technical field of energy storage, in particular to a distributed liquid-cooled energy storage box and an energy storage system. Background The energy storage box generally comprises a liquid cooling unit, a battery pack and a power module, wherein the power module is electrically connected with the battery pack and used for controlling the on-off of the battery pack, and the liquid cooling unit is used for cooling the battery pack. The liquid cooling unit is generally integrated in the energy storage box, however, under different charge-discharge multiplying power, the quantity of required battery packs is different, and the heat dissipation demand of battery packs is also different, and the liquid cooling unit is integrated in the energy storage box, is difficult to adapt to the heat dissipation demand under different charge-discharge multiplying power in a flexible way. Disclosure of utility model The embodiment of the application relates to the technical field of energy storage, in particular to a distributed liquid-cooled energy storage box and an energy storage system, which can flexibly adapt to heat dissipation requirements under different charge and discharge multiplying powers. In a first aspect, an embodiment of the present application provides a distributed liquid-cooled energy storage tank, including a tank body, where the tank body includes a side wall, and a top wall and a bottom wall that are oppositely disposed, the top wall is provided with an air outlet, and the side wall is provided with an air inlet. The energy storage box further comprises at least one energy storage module and at least one liquid cooling unit, wherein the at least one energy storage module is arranged in the box body and comprises at least one battery pack which is stacked. At least one liquid cooling unit is arranged between the energy storage module and the top wall, the liquid cooling unit is communicated with the air outlet and the air inlet, and the liquid cooling unit is used for conveying cooling liquid to a liquid cooling plate in at least one battery pack. The liquid cooling unit is communicated with the air outlet and the air inlet, so that air can enter the box body through the air inlet, heat exchange between the liquid cooling unit and the liquid cooling plate is realized in an auxiliary mode, heated air can leave the box body through the air outlet, heat dissipation of the liquid cooling unit to the battery pack is realized, and normal operation of the battery pack is guaranteed. At least one liquid cooling unit is arranged between the energy storage module and the top wall, so that the vertical space of the energy storage box can be fully utilized, the occupation of the horizontal space is reduced, and the occupied density of the energy storage box is ensured. When the charge-discharge multiplying power of the battery pack is changed, different numbers of liquid cooling units can be configured, and the heat dissipation requirements under different charge-discharge multiplying powers can be flexibly adapted. The air outlet sets up on the roof, and the air intake sets up on the lateral wall, can increase heat transfer area, satisfies higher electric core density. Meanwhile, the heat dissipation of other equipment nearby the energy storage box can be prevented from being influenced by hot air leaving from the box body. In some embodiments, which may include the above embodiments, the at least one energy storage module includes a plurality of first energy storage modules arranged along a length of the tank, and the at least one liquid cooling unit includes a plurality of first liquid cooling units arranged along the length. The at least one energy storage module comprises a plurality of first energy storage modules which are arranged along the length direction of the box body, and the number of the first energy storage modules is increased, so that the capacity of the energy storage box is increased. The energy storage boxes can be used for different charging scenes by adjusting the number of the first energy storage modules. The at least one liquid cooling unit comprises a plurality of first liquid cooling units which are arranged along the length direction of the box body, and as the number of the first energy storage modules is a plurality of, the heat dissipation requirement of the energy storage box is increased, and correspondingly, the heat dissipation capacity of the first liquid cooling units is required to be increased. Through increasing the quantity of first liquid cooling unit, can improve the heat dispersion of first liquid cooling unit to match the heat dissipation demand of energy storage case. In addition, a plurality of first liquid cooling units are arranged along the length direction of the box, and the arrangement mode of the first liquid cooling units is the same as tha