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WO-2026092700-A1 - ENERGY STORAGE SYSTEM

WO2026092700A1WO 2026092700 A1WO2026092700 A1WO 2026092700A1WO-2026092700-A1

Abstract

Disclosed in the present application is an energy storage system. The energy storage system comprises: a box body, a first storage cavity and a second storage cavity being formed in the box body; an electronic control box assembly, which is arranged in the first storage cavity; and a battery module, which is arranged in the second storage cavity and electrically connected to the electronic control box assembly.

Inventors

  • CHEN, Yake
  • YAN, Shaopeng
  • LI, XINLONG
  • ZHONG, Yalin
  • YANG, Dongya
  • CAO, Hu
  • YIN, Xueqin
  • YIN, Xiaoqiang

Assignees

  • 比亚迪股份有限公司

Dates

Publication Date
20260507
Application Date
20251031
Priority Date
20241031

Claims (20)

  1. An energy storage system (1000) is characterized by comprising: A housing (2) is provided, wherein a first storage cavity (2001) and a second storage cavity (2002) are formed within the housing (2); An electrical control box assembly (1) is disposed in the first storage cavity (2001); The battery module (6) is disposed in the second storage cavity (2002) and electrically connected to the electrical control box assembly (1).
  2. According to claim 1, the energy storage system (1000) is characterized in that the electrical control box assembly (1) comprises: A first housing (10) has a first mounting cavity (10a) and the first mounting cavity (10a) is adapted to install a first control module (11); A second housing (20) is movably connected to the first housing (10). The second housing (20) is adapted to install a second control module (21), which is electrically connected to the first control module (11).
  3. The energy storage system (1000) according to claim 2 is characterized in that the first control module (11) is a high-voltage module and the second control module (21) is a low-voltage module and/or a high-voltage module.
  4. The energy storage system (1000) according to claim 3 is characterized in that the first control module (11) is configured as a BMS module; The second control module (21) is a low-voltage module and includes a communication module and/or a control module; or The second housing (20) is constructed as a PCS control box, and the low-voltage module and the high-voltage module are installed inside the PCS control box.
  5. The energy storage system (1000) according to claim 2 is characterized in that a second housing (20) is provided on one side of the first housing (10) in the thickness direction, and a mounting position is provided on the other side of the first housing (10) in the thickness direction for connection with other structures.
  6. According to claim 2, the energy storage system (1000) is characterized in that a first mounting port (10b) is provided on the first housing (10), the first mounting port (10b) is connected to the first mounting cavity (10a), and the second housing (20) is movably disposed on the first housing (10) to selectively cover the first mounting port (10b).
  7. The energy storage system (1000) according to claim 6 is characterized in that the second housing (20) comprises: The box (23) has a second mounting cavity (20a) and a second mounting port (20b) communicating with the second mounting cavity (20a). The second mounting cavity (20a) is suitable for mounting the second control module (21). A cover plate (24) is movably disposed on the housing (23) to optionally cover the second mounting port (20b).
  8. According to claim 7, the energy storage system (1000) is characterized in that the first housing (10) is provided with a first pivot part (12) located at the edge of the first mounting port, and the second housing (20) is rotatably connected to the first housing (10) through the first pivot part (12).
  9. According to claim 8, the energy storage system (1000) is characterized in that a second pivot part (22) located at the edge of the second mounting port is provided on the housing (23), and the cover plate (24) is rotatably connected to the housing (23) through the second pivot part (22).
  10. The energy storage system (1000) according to claim 9 is characterized in that the first pivot (12) and the second pivot (22) are located on the same side of the housing (23).
  11. According to claim 8, the energy storage system (1000) is characterized in that the housing (23) is provided with a cable passage (23a) that connects the second mounting cavity (20a) and the first mounting cavity (10a), the cable passage (23a) is provided adjacent to the first pivot part (12), and the electrical connection cable connects the first control module (11) and the second control module (21) through the cable passage (23a).
  12. The energy storage system (1000) according to claim 7 is characterized in that it further comprises: a sealing member (30), the sealing member (30) being disposed on the outer periphery of the first mounting port and adapted to abut against the second housing (20); and/or the sealing member (30) being disposed on the outer periphery of the second mounting port and adapted to abut against the cover plate (24).
  13. According to claim 2, the energy storage system (1000) is characterized in that an electrical connector (13) is provided inside the first housing (10), one end of the electrical connector (13) is located in the first mounting cavity (10a) and is adapted to be electrically connected to the first control module (11), and the other end of the electrical connector (13) extends to the outside of the first mounting cavity (10a).
  14. The energy storage system (1000) according to claim 2 is characterized in that it further comprises: A box cover (4) is disposed on the box body (2), and the first storage cavity (2001) is disposed between the box cover (4) and the second storage cavity (2002).
  15. According to claim 1, the energy storage system (1000) is characterized in that the second storage cavity (2002) stores a cooling medium, which is adapted to be in direct contact with the battery module (6).
  16. According to claim 14, the energy storage system (1000) is characterized in that the second control module (21) is located on the side of the first control module (11) facing the cover (4).
  17. The energy storage system (1000) according to claim 14 is characterized in that it further includes a cooling component (5), the cooling component (5) being disposed in the cover (4) or the first storage cavity.
  18. According to claim 17, the energy storage system (1000) is characterized in that an accommodating space suitable for the cooling assembly (5) is defined between the electrical control box assembly (1), the box cover (4) and the battery module (6), and the cooling assembly (5) contacts the battery module (6) through the accommodating space.
  19. The energy storage system (1000) according to claim 1 is characterized in that the battery module (6) includes a first battery cell (200); The battery module (6) further includes: a heat dissipation device (8), the heat dissipation device (8) comprising: A support structure (201) is provided, which is adapted to support a first battery cell (200). The support structure (201) is provided with a liquid passage hole, which is adapted to conduct a cooling medium to dissipate heat from the first battery cell (200).
  20. The energy storage system (1000) according to claim 19 is characterized in that the supporting structure (201) comprises: A first pipe segment (202) and a second pipe segment (203), at least two of the second pipe segments (203) are respectively connected to both ends of the first pipe segment (202), and are spaced apart along the extension direction of the first pipe segment (202).

Description

Energy storage system This application claims priority to Chinese Patent Application No. 202422669747.8, filed on October 31, 2024, entitled "Electrical Control Box Assembly and Energy Storage System Having Therethe", and Chinese Patent Application No. 202422663584.2, filed on October 31, 2024, entitled "Cooling Assembly and Energy Storage Device", the entire contents of which are incorporated herein by reference. Technical Field This application relates to the field of energy storage system technology, and more particularly to an energy storage system. Background Technology In related technologies, the shell of an immersion liquid-cooled energy storage system has a cavity inside, where battery modules, cable modules, cooling modules, BMS electrical boxes, and communication modules are all located. These structures are prone to interference with each other, affecting the spatial layout, and the heat generated by each component may affect each other. Summary of the Invention The purpose of this application is to propose an energy storage system in which the control box assembly is located in the first storage cavity and the battery module is located in the second storage cavity. This can avoid the interference between the control box assembly and the battery module in the spatial layout and also help to avoid the mutual influence of the heat generated by each. The energy storage system according to this application includes: a housing, wherein a first storage cavity and a second storage cavity are formed within the housing; an electrical control box assembly disposed in the first storage cavity; and a battery module disposed in the second storage cavity and electrically connected to the electrical control box assembly. According to the energy storage system of this application, the control box assembly is located in the first storage cavity and the battery module is located in the second storage cavity. This can avoid the interference between the spatial layout of the control box assembly and the battery module in the box, and also help to avoid the mutual influence of the heat generated by each, thereby improving the operational stability and reliability of the energy storage system. In some embodiments, the electrical control box assembly includes: a first housing having a first mounting cavity adapted to mount a first control module; and a second housing movably connected to the first housing, adapted to mount a second control module, the second control module being electrically connected to the first control module. According to some embodiments of this application, the first control module is a high-voltage module, and the second control module is a low-voltage module and/or a high-voltage module. According to some embodiments of this application, the first control module is configured as a BMS module; the second control module is a low-voltage module and includes a communication module and/or a control module; or the second housing is configured as a PCS control box, wherein the low-voltage module and the high-voltage module are disposed inside the PCS control box. According to some embodiments of this application, a second housing is provided on one side of the first housing in the thickness direction, and a mounting position is provided on the other side of the first housing in the thickness direction for connection with other structures. According to some embodiments of this application, the first housing is provided with a first mounting port, the first mounting port is in communication with the first mounting cavity, and the second housing is movably disposed on the first housing to selectively cover the first mounting port. According to some embodiments of this application, the second housing includes: a box body, wherein a second mounting cavity and a second mounting port communicating with the second mounting cavity are formed in the box body, and the second mounting cavity is adapted to install the second control module; and a cover plate, wherein the cover plate is movably disposed on the box body to selectively cover the second mounting port. According to some embodiments of this application, the first housing is provided with a first pivot portion located at the edge of the first mounting port, and the second housing is rotatably connected to the first housing through the first pivot portion. According to some embodiments of this application, the box body is provided with a second pivot portion located at the edge of the second mounting opening, and the cover plate is rotatably connected to the box body through the second pivot portion. According to some embodiments of this application, the first pivot portion and the second pivot portion are located on the same side of the housing. According to some embodiments of this application, the housing is provided with a cable passage that connects the second mounting cavity and the first mounting cavity. The cable passage is located adjacent to th