Search

CN-121983762-A - Battery device, electricity utilization device and energy storage device

CN121983762ACN 121983762 ACN121983762 ACN 121983762ACN-121983762-A

Abstract

The embodiment of the application provides a battery device, an electricity utilization device and an energy storage device, which can effectively improve the performance of the battery device. The battery device comprises a first battery monomer set, a second battery monomer set and an on-off device, wherein the first battery monomer set comprises at least one first battery monomer, the second battery monomer set comprises at least one second battery monomer, the on-off device is used for switching working modes of the first battery monomer set and the second battery monomer set, at least part of the first battery monomers and at least part of the second battery monomers are alternately arranged along a first direction, at least one second battery monomer is arranged between the at least one first battery monomers connected with the same confluence part, and/or at least one first battery monomer is arranged between the at least one second battery monomers connected with the same confluence part.

Inventors

  • YU CIGONG
  • Yan chuntian
  • CHEN XIAOBO
  • HUANG WENHAO

Assignees

  • 宁德时代新能源科技股份有限公司
  • 厦门实证储能科技研究院有限公司

Dates

Publication Date
20260505
Application Date
20250915
Priority Date
20250401

Claims (16)

  1. 1. A battery device, characterized by comprising: a first set of battery cells including at least one first battery cell; a second set of battery cells including at least one second battery cell; The on-off device is used for switching the working modes of the first battery monomer set and the second battery monomer set; At least part of the first battery cells and at least part of the second battery cells are alternately arranged along the first direction, at least one second battery cell is arranged between at least one first battery cell connected with the same bus component, and/or at least one first battery cell is arranged between at least one second battery cell connected with the same bus component.
  2. 2. The battery device of claim 1, wherein the positive electrode of the first set of battery cells and the negative electrode of the second set of battery cells are disposed adjacent to each other, and/or The negative electrode of the first battery monomer set and the positive electrode of the second battery monomer set are adjacently arranged.
  3. 3. The battery device of claim 2, wherein the positive electrode of the first set of battery cells and the negative electrode of the second set of battery cells are disposed adjacent in the first direction, and wherein the negative electrode of the first set of battery cells and the positive electrode of the second set of battery cells are disposed adjacent in the second direction, or The negative electrode of the first battery cell set and the positive electrode of the second battery cell set are adjacently arranged along the first direction, and the positive electrode of the first battery cell set and the negative electrode of the second battery cell set are adjacently arranged along the second direction; Wherein the second direction is perpendicular to the first direction.
  4. 4. The battery device according to any one of claims 1 to 3, wherein the number of the at least one first battery cell is plural, the number of the at least one second battery cell is plural, the battery device further comprising: a first confluence part for connecting a plurality of the first battery cells; a second bus member for connecting a plurality of the second battery cells; Wherein, along the second direction, the battery device includes relative first end and the second end that sets up, the second direction is perpendicular to first direction, along the first direction, the setting is in the first end the partial first confluence part surrounds the setting is in the second confluence part of first end, and/or the setting is in the second end the partial second confluence part surrounds the setting is in the first confluence part of second end.
  5. 5. The battery device according to claim 4, wherein the at least one first battery cell is provided with a first pressure release mechanism provided on two walls opposite to the at least one first battery cell in a height direction, and/or The at least one second battery cell is provided with a second pressure relief mechanism, and the second pressure relief mechanism and the second confluence part are arranged on two opposite walls of the at least one second battery cell along the height direction; wherein the height direction is perpendicular to the first direction and the second direction.
  6. 6. The battery device according to claim 4, wherein the first confluence member is disposed under the plurality of first battery cells and the second confluence member is disposed over the plurality of second battery cells in a height direction, or The first converging part is arranged above the plurality of first battery cells along the height direction, and the second converging part is arranged below the plurality of second battery cells; wherein the height direction is perpendicular to the first direction and the second direction.
  7. 7. The battery device of any one of claims 1 to 3, wherein a first number is equal to a second number, the first number being a number of first cells in the first set of cells, the second number being a number of second cells in the second set of cells.
  8. 8. A battery device according to any one of claims 1 to 3, wherein two second battery cells are arranged between two first battery cells in the first direction, and/or And two first battery cells are arranged between the two second battery cells along the first direction.
  9. 9. A battery device according to any one of claims 1 to 3, further comprising: a third bus member for connecting a first target battery cell and a second target battery cell, the at least one first battery cell including the first target battery cell, the at least one second battery cell including the second target battery cell; wherein the on-off device is arranged on the third confluence part.
  10. 10. The battery device according to claim 9, wherein the at least one first battery cell is connected in series, the first target battery is the last battery cell of the at least one first battery cell, and/or The at least one second battery cell is connected in series, and the second target battery cell is the last battery cell in the at least one second battery cell.
  11. 11. A battery device according to any one of claims 1 to 3, wherein the operating mode comprises a mode in which the first and second sets of battery cells operate in series with the on-off device in a closed state.
  12. 12. A battery arrangement according to any one of claims 1-3, characterized in that the operating mode comprises a mode in which the first set of battery cells operates independently and/or a mode in which the second set of battery cells operates independently, with the on-off arrangement in an off state.
  13. 13. The battery device of claim 12, wherein the operating mode comprises a mode in which the first set of battery cells and the second set of battery cells alternately operate.
  14. 14. A battery device according to any one of claims 1 to 3, wherein the operating mode comprises a mode in which the first and second sets of battery cells operate in parallel.
  15. 15. An electrical device, comprising: The battery device according to any one of claims 1 to 14, for storing or providing electrical energy.
  16. 16. An energy storage device, comprising: A plurality of battery devices according to any one of claims 1 to 14 for storing or providing electrical energy.

Description

Battery device, electricity utilization device and energy storage device The application is a divisional application of an application patent application with the application date of 2025, 9, 15, the application number of 202511313785.2 and the names of battery device, electricity utilization device and energy storage device. The present application claims priority from PCT patent application PCT/CN2025/086719 entitled "battery device, electric device and energy storage device" filed on 1 month 4 of 2025, the entire contents of which are incorporated herein by reference. Technical Field The present application relates to the field of battery technology, and more particularly, to a battery device, an electric device, and an energy storage device. Background Energy conservation and emission reduction are key to sustainable development of the automobile industry, and electric vehicles become an important component of sustainable development of the automobile industry due to the energy conservation and environmental protection advantages of the electric vehicles. For electric vehicles, battery technology is an important factor in the development of the electric vehicles. In the development of battery technology, the performance of a battery is an important factor affecting the development of the battery. Therefore, how to improve the performance of the battery is a problem to be solved. Disclosure of Invention The embodiment of the application provides a battery device, an electricity utilization device and an energy storage device, which can effectively improve the performance of the battery device. The first aspect provides a battery device, which comprises a first battery monomer set, a second battery monomer set and an on-off device, wherein the first battery monomer set comprises at least one first battery monomer, the second battery monomer set comprises at least one second battery monomer, the on-off device is used for switching working modes of the first battery monomer set and the second battery monomer set, at least part of the first battery monomers and at least part of the second battery monomers are alternately arranged along a first direction, the at least one second battery monomer is arranged between the at least one first battery monomers connected with the same bus component, and/or the at least one first battery monomer is arranged between the at least one second battery monomers connected with the same bus component. According to the embodiment of the application, at least part of the first battery cells and at least part of the second battery cells are alternately arranged along the first direction, at least one second battery cell is arranged between at least one first battery cell connected with the same confluence part, and/or at least one first battery cell is arranged between at least one second battery cell connected with the same confluence part, so that the first battery cell set and the second battery cell set are alternately arranged, and the on-off device is used for switching the working modes of the first battery cell set and the second battery cell set. On the other hand, the flexibility of the switching of the working modes can be improved, so that the optimization matching can be better carried out according to the actual application scene, the battery device can work outwards better, and the performance of the battery device can be better exerted. In some possible implementations, the positive electrode of the first set of battery cells and the negative electrode of the second set of battery cells are disposed adjacent, and/or the negative electrode of the first set of battery cells and the positive electrode of the second set of battery cells are disposed adjacent. According to the technical scheme, the positive electrode of the first battery monomer set and the negative electrode of the second battery monomer set are arranged adjacently, or the negative electrode of the first battery monomer set and the positive electrode of the second battery monomer set are arranged adjacently, so that on one hand, the possibility of generating other problems is reduced, the battery device can work normally, and on the other hand, the output voltage of the first battery monomer set and the output voltage of the second battery monomer set can be the same as much as possible, and therefore, when the battery device supplies power to an external device, adverse effects on the external device can be reduced. In some possible implementations, the positive electrode of the first set of cells and the negative electrode of the second set of cells are disposed adjacent in the first direction, the negative electrode of the first set of cells and the positive electrode of the second set of cells are disposed adjacent in the second direction, or the negative electrode of the first set of cells and the positive electrode of the second set of cells are disposed adjacent in the first direction, and the