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EP-4742359-A1 - BATTERY PACK AND ENERGY STORAGE DEVICE

EP4742359A1EP 4742359 A1EP4742359 A1EP 4742359A1EP-4742359-A1

Abstract

The present disclosure relates to a battery pack and an energy storage device. The battery pack includes a case, a battery module, a first bracket, and a second bracket. The case is provided with a first accommodating cavity and a first opening that communicate with each other. The battery module is installed to the case and is located in the first accommodating cavity. The first bracket is installed to the case and is located in the first accommodating cavity. The second bracket is movably connected to the first bracket. The battery management unit is installed to the second bracket. At least part of the second bracket and at least part of the battery management unit can move between the inside and the outside of the first accommodating cavity through the first opening. At least part of the battery management unit can be located in a relatively large space outside the first accommodating cavity, which facilitates users to maintain the battery management unit. The operational difficulty is relatively low when the users maintain the battery management unit, and the labor intensity of the users is therefore reduced.

Inventors

  • SHI, Yanyan
  • WEN, JUNYUN
  • CHEN, Yuanhang

Assignees

  • Zhejiang Jinko Energy Storage Co., Ltd.

Dates

Publication Date
20260513
Application Date
20250219

Claims (15)

  1. A battery pack, comprising: a case including a first accommodating cavity and a first opening that are in communication with each other; a battery module installed to the case and located within the first accommodating cavity; a first bracket installed to the case and located within the first accommodating cavity; a second bracket movably connected to the first bracket; and a battery management unit installed to the second bracket; characterized in that , at least part of the second bracket and at least part of the battery management unit are capable of moving between the inside and the outside of the first accommodating cavity through the first opening.
  2. The battery pack according to claim 1, characterized in that , the first bracket is rotatably connected to the second bracket, or the first bracket is telescopically connected to the second bracket.
  3. The battery pack according to claim 2, characterized in that , the first bracket is rotatably connected to the second bracket; and a rotation axis of a first revolute pair between the first bracket and the second bracket is perpendicular to a height direction of the battery pack, or the rotation axis of the first revolute pair between the first bracket and the second bracket is parallel to the height direction of the battery pack.
  4. The battery pack according to claim 2, characterized in that , the first bracket is rotatably connected to the second bracket; the second bracket further comprises a first structural member and a second structural member, the first structural member is rotatably connected to the first bracket, the first structural member is rotatably or telescopically connected to the second structural member; and at least one battery management unit is installed to the second structural member.
  5. The battery pack according to claim 4, characterized in that , the first structural member is rotatably connected to the second structural member, the second structural member is capable of rotating relative to the first structural member to a first position or a second position; and in the first position, the first structural member and the second structural member are in a folded state, and in the second position, the first structural member and the second structural member are in an unfolded state.
  6. The battery pack according to claim 5, characterized in that , the second bracket is located within the first accommodating cavity; and the second structural member is located on a side of the first structural member close to the battery module, or the second structural member is located on a side of the first structural member away from the battery module.
  7. The battery pack according to claim 6, characterized in that , at least one battery management unit is located between the first structural member and the second structural member, or at least one battery management unit is located on a side of the second structural member away from the first structural member.
  8. The battery pack according to any one of claims 4 to 7, characterized in that , an angle range of the second structural member rotating relative to the first structural member is within a range of 0° - 180°.
  9. The battery pack according to any one of claims 1 to 7, characterized in that , an angle range of the second bracket rotating relative to the first bracket is within a range of 0° - 100°.
  10. The battery pack according to claim 2, characterized in that , the first bracket is telescopically connected to the second bracket; and the first bracket and the second bracket are connected by a diamond-shaped folding frame, or the first bracket and the second bracket are connected by a telescopic rod.
  11. The battery pack according to any one of claims 1 to 10, characterized in that , when the second bracket is located within the first accommodating cavity, the first bracket is in a restrained connection with the second bracket to restrict movement of the second bracket relative to the first bracket; and/or, when at least part of the second bracket is outside the first accommodating cavity, the first bracket is in a restrained connection with the second bracket to restrict movement of the second bracket relative to the first bracket.
  12. The battery pack according to any claim 11, characterized in that , the restrained connection between the first bracket and the second bracket when the second bracket is located within the first accommodating cavity and the restrained connection between the first bracket and the second bracket when the second bracket is outside the first accommodating cavity are restrained connections between the first bracket and the second bracket at different positions.
  13. The battery pack according to claim 11 or 12, characterized in that , the restrained connection between the first bracket and the second bracket includes at least one of snap connection, fastening connection, or magnetic attraction connection.
  14. The battery pack according to any one of claims 1 to 13, characterized in that , the battery pack further includes a cable, the cable electrically connects the battery management unit and the battery module, part of the cable is installed to the first revolute pair or the second revolute pair, and part of the cable extends along the rotation axis of the first revolute pair or the second revolute pair.
  15. An energy storage device, characterized by comprising an inverter, a battery management system, and at least one battery pack according to any one of claims 1 to 14.

Description

TECHNICAL FIELD The present disclosure relates to the field of energy storage technologies, and in particular to a battery pack and an energy storage device. BACKGROUND Accommodating space of a battery pack can accommodate battery modules, battery management units (BMUs), and mounting brackets. The BMU is installed to the case of the battery pack through the mounting bracket. The case is provided with an opening that can expose the BMU. Due to the relatively small accommodating space of the battery pack, when users need to maintain the BMU located within the accommodating space through the opening, corresponding operations is difficult complex, and thus the maintenance efficiency is low. SUMMARY In view of this, the present disclosure provides a battery pack and an energy storage device, which have the technical advantage of facilitating users to maintain the battery management unit. In a first aspect, the present disclosure provides a battery pack, including a case, a battery module, a first bracket, and a second bracket. The case includes a first accommodating cavity and a first opening that are in communication with each other. The battery module is installed to the case and located within the first accommodating cavity. The first bracket is installed to the case and located within the first accommodating cavity. The second bracket is movably connected to the first bracket. The battery management unit is installed to the second bracket. At least part of the second bracket and at least part of the battery management unit can move between the inside and the outside of the first accommodating cavity through the first opening. For users, when the second bracket and the battery management unit are located within the first accommodating cavity and the battery management unit needs to be maintained, users can operate the second bracket to move relative to the first bracket, so that at least part of the second bracket and at least part of the battery management unit move from inside the first accommodating cavity to a position outside the first accommodating cavity through the first opening. Since at least part of the second bracket and at least part of the battery management unit can be located in a larger space outside the first accommodating cavity, this facilitates users to maintain the battery management unit, and also makes it easier for users to disassemble the battery management unit from the second bracket and install it to the second bracket again. After the battery management unit has been maintained and it has been visually confirmed that the battery management unit is stably installed to the second bracket, users can move the second bracket and the battery management unit located outside the first accommodating cavity back into the first accommodating cavity through the first opening. Compared with the fixed bracket for installing the battery management unit of the battery pack in the related art, the bracket (including the first bracket and the second bracket) of the battery pack in the present disclosure is a movable structure. This movable bracket reduces the operational difficulty for users when maintaining the battery management unit, and the labor intensity of users is relatively low. In one or more embodiments, the first bracket is rotatably connected to the second bracket, or the first bracket is telescopically connected to the second bracket. In one or more embodiments, the first bracket is rotatably connected to the second bracket, and a rotation axis of a first revolute pair between the first bracket and the second bracket is perpendicular to a height direction of the battery pack, or the rotation axis of the first revolute pair between the first bracket and the second bracket is parallel to the height direction of the battery pack. In one or more embodiments, the first bracket is rotatably connected to the second bracket, the second bracket further includes a first structural member and a second structural member, the first structural member is rotatably connected to the first bracket, and the first structural member is rotatably or telescopically connected to the second structural member. At least one battery management unit is installed to the second structural member. In one or more embodiments, the first structural member is rotatably connected to the second structural member, and the second structural member can rotate relative to the first structural member to a first position or a second position. In the first position, the first structural member and the second structural member are in a folded state, and in the second position, the first structural member and the second structural member are in an unfolded state. In one or more embodiments, the second bracket is located within the first accommodating cavity, and the second structural member is located on a side of the first structural member close to the battery module, or the second structural member is located on a side of the