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CN-224232783-U - Battery device and electricity utilization device

CN224232783UCN 224232783 UCN224232783 UCN 224232783UCN-224232783-U

Abstract

The application is applicable to the technical field of batteries and provides a battery device and an electric device, wherein the battery device comprises a box body, a battery module and a power supply module, wherein the box body comprises a top cover, a bottom plate and a frame structure, the frame structure encloses a containing space which is penetrated along a first direction, and the top cover and the bottom plate are connected with the frame structure along the first direction and are covered in the containing space; the battery device provided by the embodiment of the application has the advantages that the electrode terminals face the side face of the battery device, so that the occupation of the electrode terminals to the height space of the battery device is reduced, the space utilization rate of the battery cell in the height direction of the battery device is improved, and the energy density is improved.

Inventors

  • TANG YU
  • WANG WENLI
  • YANG HAIQI
  • HUANG XIAOTENG

Assignees

  • 宁德时代新能源科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250320

Claims (17)

  1. 1. A battery device, characterized by comprising: The box body comprises a top cover, a bottom plate and a frame structure, wherein the frame structure encloses an accommodating space penetrating along a first direction, and the top cover and the bottom plate are connected with the frame structure along the first direction and cover the accommodating space; The battery cell assembly is accommodated in the accommodating space and comprises at least two battery cells arranged along the second direction; The battery unit comprises a shell and two electrode terminals arranged on the shell, the shell is provided with two first faces which are arranged along a third direction, and the two electrode terminals are arranged on the same first face; the first direction, the second direction and the third direction are perpendicular to each other.
  2. 2. The battery device of claim 1, wherein the cell assembly further comprises at least two cells arranged in the third direction; In the third direction, the electrode terminals of the adjacent two battery cells are disposed opposite to each other.
  3. 3. The battery device of claim 2, wherein the battery cell further comprises a pressure relief structure disposed on the housing, the pressure relief structure and the electrode terminal being located on different sides of the housing, respectively.
  4. 4. The battery device of claim 3, wherein a first protective structure is further provided between the battery cell assembly and the inner surface of the case in the third direction.
  5. 5. The battery device according to claim 4, wherein the pressure release structure and the electrode terminal are provided on different ones of the first faces, respectively; The first protection structure is equipped with the exhaust groove towards adjacent one side of first face, the exhaust groove with pressure release structure corresponds the setting.
  6. 6. The battery device of claim 4 or 5, wherein the first protective structure is an insulating structure, and/or In the third direction, a first insulating structure is arranged between the battery cell assembly and the first protection structure.
  7. 7. The battery device according to any one of claims 2 to 5, wherein a second insulating structure is provided between two adjacent battery cells in the third direction to insulate the electrode terminals on both sides of the second insulating structure.
  8. 8. The battery device of claim 1, wherein the cell assembly further comprises at least two cells arranged in the third direction; in the third direction, the electrode terminals of the adjacent two battery cells are disposed apart from each other.
  9. 9. The battery device of claim 8, wherein the battery cell further comprises a pressure relief structure disposed on the housing, the pressure relief structure and the electrode terminal being located on different sides of the housing, respectively.
  10. 10. The battery device of claim 9, wherein the pressure relief structure is disposed on a side of the battery cell in the first direction.
  11. 11. The battery device according to any one of claims 8 to 10, wherein the battery cell is disposed at a distance from an inner surface of the case in the third direction.
  12. 12. The battery device according to any one of claims 8 to 10, wherein a third insulating structure is provided between the battery cell and an inner surface of the case in the third direction.
  13. 13. The battery device according to any one of claims 8 to 10, wherein a second protection structure is provided between the battery cell and an inner surface of the case in the third direction, the second protection structure being connected to the case or the adjacent battery cell.
  14. 14. The battery device according to any one of claims 1-5, wherein the top cover and/or the bottom plate is connected to the battery cells.
  15. 15. The battery device according to any one of claims 1 to 5, wherein a ratio between a size of the battery cell and a size of the case body in the first direction is in a range of 80% to 97%.
  16. 16. The battery device according to any one of claims 1 to 5, wherein in the second direction, the battery cell has a size in the range of 10mm to 50mm; In the first direction, the size range of the battery monomer is 60 mm-150 mm; The ratio of the dimension of the battery cell in the third direction to the dimension of the battery cell in the first direction is greater than or equal to 1.2.
  17. 17. An electrical device comprising a battery device according to any one of claims 1 to 16.

Description

Battery device and electricity utilization device Technical Field The application belongs to the technical field of batteries, and particularly relates to a battery device and an electricity utilization device. Background Currently, the battery device is more widely used in view of the development of market situation. The battery device is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, as well as a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of battery devices, the market demand of the battery devices is also continuously expanding. In the current battery device, the electrode terminals are oriented toward the top cover of the box body, and for the battery cells with larger width and smaller thickness, the arrangement easily results in larger free space of the battery device near the top cover and lower energy density of the battery device. Disclosure of utility model In view of the above, the present application provides a battery device and an electric device, which can alleviate the negative influence of a battery cell having a larger width and a smaller thickness on the energy density of the battery device. In a first aspect, an embodiment of the present application provides a battery device, including: The box body comprises a top cover, a bottom plate and a frame structure, wherein the frame structure encloses an accommodating space penetrating along a first direction, the top cover and the bottom plate are connected to the frame structure along the first direction and are covered in the accommodating space, the battery unit assembly is accommodated in the accommodating space and comprises at least two battery units arranged along a second direction, each battery unit comprises a shell and two electrode terminals arranged on the shell, the shell is provided with two first faces arranged along a third direction, the two electrode terminals are arranged on the same first face, and the first direction, the second direction and the third direction are mutually perpendicular. In the technical scheme of the embodiment, the electrode terminals face the side face of the battery device, so that occupation of the electrode terminals to the height space of the battery device is reduced, space utilization rate of the battery cells in the height direction of the battery device is improved, and meanwhile, the battery cells can also provide a certain support for the box body in the height direction, so that strength of the battery device is improved. In some embodiments, the battery cell assembly further comprises at least two battery cells arranged along a third direction, and in the third direction, electrode terminals of two adjacent battery cells are oppositely arranged. In the technical scheme of the embodiment, the electrode terminals of two adjacent battery monomers in the third direction are opposite to each other, so that the arrangement difficulty of the electric connection structure between the electrode terminals is reduced, the space occupation of the electric connection structure is reduced, meanwhile, the electrode terminals and the electric connection structure are arranged at the central position of the battery device, and the risk that the electrode terminals and the electric connection structure are damaged can be reduced under the condition that the battery device is collided, and the safety performance of the battery device is improved. In some embodiments, the battery cell further includes a pressure relief structure disposed on the housing, the pressure relief structure and the electrode terminal being respectively located on different sides of the housing. In the technical scheme of the embodiment, under the condition that two electrode terminals are oppositely arranged, the pressure release structure is located on the other sides of the shell, which are different from the electrode terminals, so that the influence of single battery monomer thermal runaway on the electric connection structure and other battery monomers is reduced, the thermal runaway diffusion risk caused by the single battery monomer thermal runaway is reduced, and the safety performance of the battery device is improved. In some embodiments, a first protective structure is also provided between the battery cell assembly and the inner surface of the case in the third direction. In the technical scheme of the embodiment, the first protection structure is arranged between the battery monomer component and the inner surface of the box body so as to separate the battery monomer from the box body through the first protection structure, and under the condition that the battery device is collided, the first protection structure can buffer an