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CN-224204167-U - Energy storage structure and system

CN224204167UCN 224204167 UCN224204167 UCN 224204167UCN-224204167-U

Abstract

The utility model discloses an energy storage structure and system, comprising a box body, a bottom cold plate and a plurality of electric cores, wherein the bottom cold plate is arranged in the box body, the bottom cold plate is horizontally paved at the bottom of the box body, the electric cores are arranged on the top surface of the bottom cold plate, the energy storage structure also comprises a cooling medium and at least one side cold plate, the cooling medium is arranged in the box body, the side cold plate is arranged on the top surface of the bottom cold plate and is positioned on one side of the electric cores, the side cold plate extends along the height direction of the electric cores, the cooling medium is filled in the box body, and the electric cores are immersed in the cooling medium. The utility model can improve the heat dissipation efficiency and uniformity and reduce the local temperature difference of the battery cell.

Inventors

  • WEI XING

Assignees

  • 浙江云创智达科技有限公司

Dates

Publication Date
20260505
Application Date
20250519

Claims (10)

  1. 1. The utility model provides an energy storage structure, includes box (10) to and set up in bottom cold plate (20) and a plurality of electric core (30) in box (10), bottom cold plate (20) tiling is in the bottom of box (10), electric core (30) set up in the top surface of bottom cold plate (20), its characterized in that, energy storage structure is still including setting up cooling medium (40) and at least one lateral part cold plate (50) in box (10), lateral part cold plate (50) set up in the top surface of bottom cold plate (20) and lie in one side of electric core (30), lateral part cold plate (50) are followed the direction of height of electric core (30) extends, cooling medium (40) are filled in box (10), electric core (30) submergence is in cooling medium (40).
  2. 2. The energy storage structure according to claim 1, wherein a first cooling channel (21) is formed on the bottom cooling plate (20), two ends of the first cooling channel (21) are provided with a first liquid inlet (211) and a first liquid outlet (212), a second cooling channel (51) is formed on the side cooling plate (50), two ends of the second cooling channel (51) are provided with a second liquid inlet (511) and a second liquid outlet (512), the second liquid inlet (511) and the second liquid outlet (512) are respectively communicated with the first cooling channel (21), and the second liquid outlet (512) is located downstream of the second liquid inlet (511) along the liquid flowing direction in the first cooling channel (21).
  3. 3. The energy storage structure according to claim 2, wherein the top surface of the bottom cold plate (20) is formed with a butt joint opening corresponding to the second liquid inlet (511) and the second liquid outlet (512), the butt joint opening is communicated with the first cooling channel (21), and the second liquid inlet (511) and the second liquid outlet (512) are welded with the corresponding butt joint openings and are communicated with each other.
  4. 4. The energy storage structure according to claim 1, characterized in that a heat conducting glue is arranged between the cooling surface of the side cold plate (50) and the side of the battery cell (30), and the bottom surface of the battery cell (30) and the top surface of the bottom cold plate (20) are connected by a fixing glue.
  5. 5. The energy storage structure of any of claims 1 to 4, comprising a plurality of side cold plates (50), a plurality of side cold plates (50) being spaced apart, the cells (30) being disposed in the spaces between the side cold plates (50).
  6. 6. The energy storage structure according to any one of claims 1 to 4, further comprising a turbulence member (60), the turbulence member (60) comprising a turbulence tube (61) and a turbulence pump (62), both the turbulence tube (61) and the turbulence pump (62) being submerged in the cooling medium (40), one end of the turbulence tube (61) extending to the top end of the electrical core (30), the turbulence pump (62) being intended to accelerate the flow of the cooling medium (40) from the turbulence tube (61) and to drain from the top end of the electrical core (30) for turbulence of the cooling medium (40) at the top of the electrical core (30).
  7. 7. The energy storage structure according to claim 6, wherein the turbulence tube (61) comprises a vertical connection section (611) and a transverse turbulence section (612), one end of the connection section (611) is connected with the top surface of the bottom cold plate (20), the other end of the connection section is connected with the turbulence section (612), the turbulence section (612) is arranged at the top of the battery cell (30), the turbulence pump (62) is arranged at the connection section (611), an input port of the turbulence pump (62) is communicated with the inner cavity of the box body (10), an output port is communicated with the inner cavity of the connection section (611), an opening structure is formed at the tail end of the turbulence section (612), and a turbulence hole (613) is formed in the side wall of the turbulence section (612).
  8. 8. The energy storage structure according to any one of claims 1 to 4, wherein the cooling medium (40) comprises at least one of a fluorinated liquid, a synthetic oil, and a silicone oil, and the liquid level of the cooling medium (40) is not less than 30mm above the top tab of the cell (30).
  9. 9. The energy storage structure according to any one of claims 1 to 4, wherein the tank (10) comprises a housing (11), a cover plate (12) and a pressure relief valve (13), the cover plate (12) is arranged at the top of the housing (11) and is in sealing connection with the housing (11), and the pressure relief valve (13) is arranged on the cover plate (12) and is communicated with the inner cavity of the tank (10).
  10. 10. An energy storage system comprising an energy storage structure as claimed in any one of claims 1 to 9 and a refrigeration system, wherein the energy storage structure comprises a first refrigeration system providing circulating cooling fluid to the bottom cold plate (20) and the side cold plates (50) and a second refrigeration system for effecting circulating flow of the cooling medium (40) within the tank (10).

Description

Energy storage structure and system Technical Field The utility model relates to the technical field of liquid cooling heat dissipation, in particular to an energy storage structure and system with more uniform heat dissipation. Background At present, the energy storage battery core is rapidly developed to the high-power, high-specific energy and long-service life directions, and the corresponding heat dissipation of the energy storage battery core is also increasingly focused. The cooling mode of the energy storage battery core in the related technology is mainly air cooling and cold plate type, the air cooling type adopts a structure of a relatively high-power fan, a radiating air duct and fins to realize heat radiation of the battery core, the liquid cooling type is more mainly an indirect cooling system, and the liquid cooling type is circulated by adopting a cooling liquid sealing structure and consists of a liquid cooling plate, a circulating pump set, a control system and a pipeline. The air-cooled system has the problems of low local heat dissipation efficiency and high noise due to the need of matching with a large-air-volume fan. Cold plates have certain advantages over air cooling. However, the cooling plate type cooling mode in the related art has the problem of uneven cooling, so that the energy storage battery core has a local temperature difference. Disclosure of utility model The present utility model aims to solve one of the technical problems in the related art to a certain extent. Therefore, the utility model provides the energy storage structure and the system, which have the advantages of reducing the temperature difference of the battery cell and having better cooling effect. In order to achieve the above object, a first aspect of the present utility model discloses an energy storage structure, which comprises a box body, a bottom cold plate and a plurality of electric cores, wherein the bottom cold plate is arranged in the box body, the bottom cold plate is horizontally paved at the bottom of the box body, the electric cores are arranged on the top surface of the bottom cold plate, the energy storage structure further comprises a cooling medium arranged in the box body and at least one side cold plate, the side cold plate is arranged on the top surface of the bottom cold plate and is positioned on one side of the electric cores, the side cold plate extends along the height direction of the electric cores, the cooling medium is filled in the box body, and the electric cores are immersed in the cooling medium. In this technical scheme, through submerging the electric core in cooling medium, can improve the cooling effect of electric core, through having set up the bottom cold plate that is located electric core bottom and the lateral part cold plate that is located electric core lateral part in addition, can dispel the heat respectively to the bottom and the lateral part of electric core simultaneously, realize the heat dissipation to the electric core is all-round and is missed, reduces the problem that the local difference in temperature is too big that the electric core probably exists. Further, a first cooling channel is formed on the bottom cooling plate, a first liquid inlet and a first liquid outlet are formed at two ends of the first cooling channel, a second cooling channel is formed on the side cooling plate, a second liquid inlet and a second liquid outlet are formed at two ends of the second cooling channel, the second liquid inlet and the second liquid outlet are respectively communicated with the first cooling channel, the liquid flowing direction in the first cooling channel is followed, and the second liquid outlet is located at the downstream of the second liquid inlet. The cooling liquid of the bottom cooling plate and the side cooling plate are communicated with each other, so that the whole structure is more compact, and the layout of the refrigerating system is convenient. Further, the top surface of the bottom cold plate is provided with a butt joint opening corresponding to the second liquid inlet and the second liquid outlet, the butt joint opening is communicated with the first cooling channel, and the second liquid inlet and the second liquid outlet are connected with the corresponding butt joint openings in a welding mode and are communicated with each other. Further, a heat-conducting adhesive is arranged between the cooling surface of the side part cold plate and the side surface of the battery cell, and the bottom surface of the battery cell is connected with the top surface of the bottom cold plate through a fixing adhesive. The stability of the installation of the battery cell in the box body and the radiating effect are improved. Further, the energy storage structure comprises a plurality of side cold plates, the side cold plates are distributed at intervals, and the battery cells are arranged in intervals among the side cold plates. The side part cold p