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CN-224232780-U - Battery device and power utilization device

CN224232780UCN 224232780 UCN224232780 UCN 224232780UCN-224232780-U

Abstract

The application discloses a battery device and an electricity utilization device, and belongs to the technical field of batteries. The battery cell assembly of the battery device includes at least two battery cells. The mounting box comprises a box body and a box cover which is covered on the box body, the box body comprises a supporting body, a main support, a mounting seat and a coating layer which is coated on the outer surface of the supporting body, the coating layer is made of reinforced composite materials, the coating layer is enclosed to form a containing cavity, the battery unit is located in the containing cavity, the main support is located on one side of the coating layer facing the supporting body, the main support is connected with the supporting body, the main support is located on one side of the containing cavity facing away from the box cover so as to bear the battery unit assembly, and the mounting seat is connected with the main support. The bottom guard board is positioned on the box body and a side facing away from the cover. The connecting piece is arranged on the bottom guard plate and the mounting seat in a penetrating way so as to mount the bottom guard plate on the box body. The mount pad can provide better erection bracing for the connecting piece, and the connecting piece wears to locate at the end backplate and mount pad can be with the comparatively firm box of installing of end backplate.

Inventors

  • WU KAI
  • KE QINGPENG
  • MIAO HUIMIN
  • ZHAO JUNLIANG
  • PAN XIN

Assignees

  • 宁德时代新能源科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250317

Claims (16)

  1. 1. A battery device, characterized by comprising: a battery cell assembly comprising at least two battery cells; The mounting box comprises a box body and a box cover which is covered on the box body, the box body comprises a supporting body, a main support, a mounting seat and a coating layer which is coated on the outer surface of the supporting body, the coating layer is made of reinforced composite materials, the coating layer is enclosed to form a containing cavity, the battery unit is located in the containing cavity, the main support is located on one side, facing the supporting body, of the coating layer, the main support is connected with the supporting body, the main support is located on one side, facing away from the box cover, of the containing cavity so as to bear the battery unit assembly, and the mounting seat is connected with the main support; The bottom guard plate is positioned on one side of the box body, which is away from the box cover; The connecting piece is arranged in the bottom guard plate and the mounting seat in a penetrating mode so as to mount the bottom guard plate on the box body.
  2. 2. The battery device of claim 1, wherein the mount comprises: The main seat is provided with a weight reducing cavity and is connected with the main support; The mounting sleeve penetrates through the weight-reducing cavity, the mounting sleeve is connected with the main seat, and the connecting piece penetrates through the mounting sleeve.
  3. 3. The battery device of claim 2, wherein the mounting sleeve has internal threads, the mounting base further comprises a threaded sleeve, the threaded sleeve is threadably coupled to the internal threads, and the connector is threadably coupled to the threaded sleeve.
  4. 4. The battery device of claim 2, wherein the support is partially filled within the weight-reduction cavity, the support having a density less than a density of the main seat.
  5. 5. The battery device of claim 2, wherein the mounting base further comprises a hanging base connected with the main base, the hanging base is of a solid structure, the hanging base is provided with a hanging hole for hanging the box body, and the hanging hole penetrates through the hanging base.
  6. 6. The battery device according to claim 5, wherein the arrangement direction of the case body and the case cover is a first direction, the mounting seats are provided on opposite sides of the accommodation chamber in a second direction, the second direction is arranged to intersect the first direction, the mounting holes and the mounting sleeves are arranged in the second direction, and the mounting sleeves on both sides are located between the mounting holes on both sides in the second direction.
  7. 7. The battery device according to claim 6, wherein the support body has an expansion beam, the expansion beams are provided on opposite sides of the battery cell assembly, and an arrangement direction of the expansion beams on both sides is a third direction, and the third direction is disposed to intersect the first direction and the second direction, respectively.
  8. 8. The battery device according to claim 1, wherein the support body has an expansion beam, the expansion beams are provided on opposite sides of the battery cell assembly, the battery device further comprises a base, the expansion beam is connected to the base on a side of each side facing away from the case cover in an arrangement direction of the case body and the case cover, and the base is connected to the main support.
  9. 9. The battery device according to claim 8, wherein the projection areas of the battery cell assembly are disposed across the projection areas of the base and the projection areas of the expansion beams in the arrangement direction of the case body and the case cover, as projected in the arrangement direction of the expansion beams on both sides.
  10. 10. The battery device of claim 9, wherein the base comprises: The bearing platform is connected to one side of the expansion beam, which is far away from the box cover along the arrangement direction of the box body and the box cover, and projects along the arrangement direction of the expansion beam at two sides, and the projection area of the battery unit assembly is arranged across the projection area of the bearing platform and the projection area of the expansion beam along the arrangement direction of the box body and the box cover; the base is connected with one side of the bearing platform, which deviates from the box cover along the arrangement direction of the box body and the box cover, is connected with the main support and projects along the arrangement direction of the expansion beams at two sides, and the projection area of the battery unit component is staggered with the projection area of the base.
  11. 11. The battery device of claim 10, wherein the base and the platform are hollow structures, the support is partially located in the base, the support is partially located in a space defined by the base and the platform, and the density of the base and the density of the platform are both greater than the density of the support.
  12. 12. The battery device of claim 8, wherein the base is made of metal.
  13. 13. The battery device according to any one of claims 1 to 12, wherein the mounting base is made of metal, and/or the main support is made of metal.
  14. 14. The battery device according to any one of claims 1 to 12, wherein the material of the support is a foam material or a reinforced composite material.
  15. 15. The battery device according to any one of claims 1 to 12, wherein the main support has a plate-like shape, grooves are formed in the main support on opposite sides of the arrangement direction of the case body and the case cover, the number of the grooves is at least two, the at least two grooves are arranged in sequence, and the grooves on both sides are alternately arranged in the arrangement direction of the at least two grooves.
  16. 16. An electrical device comprising a battery device according to any one of claims 1 to 15 for storing or providing electrical energy.

Description

Battery device and power utilization device Technical Field The present application relates to the field of battery technologies, and in particular, to a battery device and an electric device. Background Batteries are increasingly used in life and industry, for example, new energy automobiles having the batteries mounted therein have been widely used, and in addition, the batteries are increasingly used in the field of energy storage and the like. The material of the coating layer of the case of the battery device is a reinforced composite material, and the bottom guard plate is difficult to mount to the case. Disclosure of Invention In order to solve the technical problems, the application provides a battery device and an electric device so as to better realize the installation between a bottom guard plate and a box body. The application is realized by the following technical scheme. A first aspect of an embodiment of the present application provides a battery device including: a battery cell assembly comprising at least two battery cells; The mounting box comprises a box body and a box cover which is covered on the box body, the box body comprises a supporting body, a main support, a mounting seat and a coating layer which is coated on the outer surface of the supporting body, the coating layer is made of reinforced composite materials, the coating layer is enclosed to form a containing cavity, the battery unit is located in the containing cavity, the main support is located on one side, facing the supporting body, of the coating layer, the main support is connected with the supporting body, the main support is located on one side, facing away from the box cover, of the containing cavity so as to bear the battery unit assembly, and the mounting seat is connected with the main support; The bottom guard plate is positioned on one side of the box body, which is away from the box cover; The connecting piece is arranged in the bottom guard plate and the mounting seat in a penetrating mode so as to mount the bottom guard plate on the box body. In the embodiment of the application, the casing has higher strength by arranging the battery cell assembly in the main support bearing and accommodating cavity and coating the material outside the support body as the coating layer of the reinforced composite material. The mount pad is connected with the main tributary, and the connecting piece wears to locate end backplate and mount pad and installs end backplate in the box, and the connecting piece is connected with the mount pad, provides the installation support for the connecting piece of installing end backplate through the mount pad, and the load of end backplate passes through the connecting piece and transmits the mount pad and to the main tributary through the mount pad, bears the load of end backplate jointly through main support and mount pad for the mount pad can provide better erection bracing for the connecting piece, and the connecting piece wears to locate end backplate and mount pad can install end backplate comparatively firmly to the box. In some embodiments, the mount comprises: The main seat is provided with a weight reducing cavity and is connected with the main support; The mounting sleeve penetrates through the weight-reducing cavity, the mounting sleeve is connected with the main seat, and the connecting piece penetrates through the mounting sleeve. In the embodiment of the application, the weight reduction cavity of the main seat is beneficial to reducing the overall weight of the mounting seat, and the mounting sleeve connected with the main seat is penetrated in the weight reduction cavity, so that the connecting piece is convenient to connect near the weight reduction cavity. The mounting support can be better provided for the connecting piece, and the weight of the mounting seat can be reduced. In some embodiments, the mounting sleeve has an internal thread, the mounting seat further comprises a threaded sleeve, the threaded sleeve is in threaded connection with the internal thread, and the connecting piece is in threaded connection with the threaded sleeve. According to the embodiment of the application, the threaded sleeve can play a role of protecting the internal threads of the mounting sleeve to a certain extent, and under the condition that the threads of the threaded sleeve are worn due to repeated dismounting between the connecting piece and the threaded sleeve, the threaded sleeve is screwed out of the mounting sleeve to be replaced by a new threaded sleeve, so that the mounting sleeve is convenient to maintain, the mounting seat is not required to be replaced integrally, and the maintenance cost is reduced. In some embodiments, the support partially fills the weight-reducing cavity, the support having a density less than a density of the main seat. In the embodiment of the application, the support body with smaller density is filled in the weight-reducing cavity, which is beneficia