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CN-224232836-U - Battery device and electric equipment

CN224232836UCN 224232836 UCN224232836 UCN 224232836UCN-224232836-U

Abstract

The application discloses a battery device and electric equipment. The battery device comprises a case (201) provided with an accommodating space (230), a battery module (100) arranged in the accommodating space (230), wherein the battery module (100) comprises battery cells (140) which are arranged in a square structure, at least two battery cells (140) are arranged in a stacked mode in a first direction, the first direction is consistent with the thickness direction of the battery cells (140) and the height direction of the case (201), the thickness of the battery cells (140) is smaller than the length and the width of the battery cells (140), the battery cells (140) comprise pole structures (144), and structural members are fixed on at least one surface of the battery module (100) and avoid the pole structures (144). The technical scheme includes, but is not limited to, solving the problems that the space utilization rate is low and the energy density of the battery device is not beneficial to improvement due to the fact that the battery unit is assembled in a vertical installation mode in the battery device applied to the commercial vehicle.

Inventors

  • LUO WENCHAO
  • Wu Guangdang
  • WANG ZHI

Assignees

  • 宁德时代新能源科技股份有限公司

Dates

Publication Date
20260512
Application Date
20240726

Claims (20)

  1. 1. A battery device, characterized by comprising: A case housing formed with an accommodation space; A battery module disposed in the receiving space, wherein, The battery module includes: The battery unit is arranged in a square structure, at least two battery units are stacked in a first direction, the first direction is consistent with the thickness direction of the battery unit and the height direction of the box shell, the thickness of the battery unit is smaller than the length and the width of the battery unit, and the battery unit comprises a pole column structure; The structure comprises a first layer plate, a second layer plate and a brace, wherein the first layer plate and the second layer plate are respectively arranged on the uppermost surface and the lowermost surface of the battery module, two ends of the brace are respectively connected with the edge of the first layer plate and the edge of the second layer plate, the first layer plate and the second layer plate clamp and fix the battery monomer, and the plate surfaces of the first layer plate and the second layer plate are perpendicular to the first direction.
  2. 2. The battery device according to claim 1, wherein, The structural member further comprises at least one middle layer plate, wherein the middle layer plate is arranged between the first layer plate and the second layer plate, and the upper side and the lower side of the middle layer plate are respectively provided with the battery cells.
  3. 3. The battery device according to claim 1 or 2, wherein, The structure still includes the baffle, the both ends of baffle connect respectively in first plywood with the second plywood, the face of baffle with first direction parallel arrangement, first plywood the second plywood reaches the baffle three forms first installation space and second installation space, first installation space with all range upon range of being provided with in the second installation space the battery monomer, and, the battery monomer butt in the baffle.
  4. 4. The battery device according to claim 3, wherein, The battery cell located in the first installation space and the battery cell located in the second installation space are symmetrically arranged relative to the partition board, and the pole column structure is arranged on the surface, far away from the partition board, of the battery cell.
  5. 5. The battery device according to claim 4, wherein, In the first installation space and the second installation space, a plurality of battery cells are sequentially paved to form a layer along a second direction, and a plurality of layers are stacked along the first direction, wherein the second direction is perpendicular to the first direction and parallel to the plate surface of the separator.
  6. 6. The battery device according to claim 5, wherein, Shoulders of two adjacent battery cells in the second direction are simultaneously pressed by one brace.
  7. 7. The battery device according to claim 6, wherein, Structural adhesive is arranged between the brace and the battery monomer.
  8. 8. The battery device according to claim 1 or 2, wherein, And one end of the brace is connected with the edge of the first layer plate, and the other end of the brace is connected with the edge of the second layer plate through bolts or welded.
  9. 9. The battery device according to claim 2, wherein, The middle layer plate comprises a liquid cooling plate; At least one liquid cooling plate is arranged between any two adjacent layers of battery monomers; Or the upper side and the lower side of the liquid cooling plate are respectively provided with a plurality of layers of battery monomers.
  10. 10. The battery device according to claim 1 or 2, wherein, The first layer plate is provided with a first liquid cooling flow channel which is used for cooling liquid circulation; and/or the second laminate is provided with a second liquid cooling flow passage, and the second liquid cooling flow passage is used for circulating cooling liquid.
  11. 11. The battery device according to claim 3, wherein, The partition plate is provided with a third liquid cooling flow passage used for cooling liquid circulation.
  12. 12. The battery device according to claim 3, wherein, And structural adhesive is arranged between the surface of the battery monomer facing the separator and the separator.
  13. 13. The battery device according to claim 1 or 2, wherein, Structural adhesives are arranged between the surface of the battery monomer facing the first layer plate and the first layer plate, and between the surface of the battery monomer facing the second layer plate and the second layer plate.
  14. 14. The battery device according to claim 3, wherein, The first layer plate and the partition plate are connected or welded through bolts; and/or the second layer plate and the partition plate are connected or welded through bolts.
  15. 15. The battery device according to claim 1 or 2, wherein, The battery module comprises a battery module body and is characterized in that the battery module body comprises a battery shell body and a cover body, wherein the cover body covers the battery shell body to form the accommodating space, a spandrel girder is arranged at the bottom of the battery shell body, and any opposite edge areas formed by structural members in the battery module body are in one-to-one correspondence with the spandrel girders.
  16. 16. The battery device of claim 15, wherein the battery device comprises a battery cell, The spandrel girder extends along a length direction of the case.
  17. 17. The battery device of claim 15, wherein the battery device comprises a battery cell, The bottom of box is equipped with the stiffening beam, the both ends of stiffening beam are connected respectively in two relative spandrel girder, the stiffening beam paste in the bottom of box.
  18. 18. The battery device of claim 15, wherein the battery device comprises a battery cell, Structural adhesive is arranged between the surface, which is formed by the structural part and faces the bottom of the box body, of the battery module and the bottom of the box body.
  19. 19. The battery device according to claim 1 or 2, wherein, The battery modules are arranged in a plurality, and the battery modules are sequentially arranged in the direction perpendicular to the first direction.
  20. 20. A powered device, comprising: The battery device of any one of claims 1-19.

Description

Battery device and electric equipment Technical Field The application relates to the technical field of battery design and manufacturing, in particular to a battery device and electric equipment. Background The battery device generally includes a plurality of battery cells, and the plurality of battery cells are all assembled in the box body in a vertical manner and are electrically connected in a serial manner, a parallel manner and a series-parallel manner. In the context of commercial vehicles, the height of the battery unit, which is placed in a vertical mounting (also called "upright"), is high, which in turn results in a high overall height of the battery unit. If the battery cells are placed in the normal position, the space utilization of the case of the battery device is not high. Disclosure of Invention The embodiment of the application aims to provide a battery device and electric equipment, which comprise but are not limited to solving the problems that a battery unit in the battery device applied to a commercial vehicle is assembled in a vertical installation mode, so that the space utilization rate of a box shell is low, and the energy density of the battery device is not beneficial to improvement. The technical scheme adopted by the embodiment of the application is as follows: according to a first aspect of the present application, there is provided a battery device comprising: A case housing formed with an accommodation space; A battery module disposed in the receiving space, wherein, The battery module includes: The battery unit is arranged in a square structure, at least two battery units are stacked in a first direction, the first direction is consistent with the thickness direction of the battery unit and the height direction of the case, wherein the thickness of the battery unit is smaller than the length and the width of the battery unit, and the battery unit comprises a pole structure; and the structural member is fixed on at least one surface of the battery module and keeps away from the pole structure. In the battery device provided by the application, the battery monomer is installed in a lying installation mode, so that compared with the vertical type assembly of the battery monomer in the related art, the limited assembly space of the box shell can be more reasonably utilized by installing the battery monomer in the lying installation mode, the space utilization rate is improved, and the energy density of the battery device is improved. In some embodiments of the present application, the structural member includes a first layer plate and a second layer plate, the first layer plate and the second layer plate are respectively disposed on an uppermost surface and a lowermost surface of the battery module, and the first layer plate and the second layer plate clamp and fix the battery cells, wherein the plate surfaces of the first layer plate and the second layer plate are perpendicular to the first direction. In the process that the battery device is used, compared with the process that the battery cells are assembled vertically, the number of the battery cells in the first direction is reduced, so that the expansion force in the first direction is reduced, the battery device is not easy to damage, and the service life of the battery device is prolonged. In some embodiments of the application, the structural member further comprises at least one intermediate layer plate disposed between the first layer plate and the second layer plate, the intermediate layer plate being provided with battery cells on both upper and lower sides thereof. The middle layer plate can reduce the action stress of direct abutting contact between the battery cells, and is beneficial to protecting the battery cells. In some embodiments of the present application, the structural member further includes a partition board, two ends of the partition board are connected to the first layer board and the second layer board respectively, the board surface of the partition board is parallel to the first direction, the first layer board, the second layer board and the partition board form a first installation space and a second installation space, the first installation space and the second installation space are respectively provided with a battery cell in a stacked manner, and the battery cell is abutted to the partition board. Compared with the prior art that the battery monomer is assembled vertically, the battery monomer is assembled in a lying installation mode, so that the limited assembly space of the box shell can be utilized more reasonably, the space utilization rate is improved, and the energy density of the battery device is improved. In some embodiments of the present application, the battery cell located in the first mounting space and the battery cell located in the second mounting space are disposed symmetrically with respect to the separator, and the post structure is disposed on a surface of the batte