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CN-224232833-U - Battery device and power utilization device

CN224232833UCN 224232833 UCN224232833 UCN 224232833UCN-224232833-U

Abstract

The application discloses a battery device and an electricity utilization device. The battery device comprises a battery unit, a thermal management assembly and a box body assembly, wherein the thermal management assembly is used for carrying out thermal management on the battery unit, the box body assembly comprises a box body and a bottom guard plate, a first space is formed in the box body, the battery unit and the thermal management assembly are arranged in the first space, the bottom guard plate is connected to one side, deviating from the first space, of the box body, at least part of the bottom guard plate is spaced from the box body to form a second space, and the box body is provided with holes which are communicated with the first space and the second space. Therefore, the risk that the short circuit occurs in the battery device due to the fact that liquid leaked from the thermal management assembly is in the first space for a long time can be reduced, and the reliability of the battery device is improved.

Inventors

  • ZHANG GUIHUA
  • HUANG HAIHUA
  • CHEN BINBIN

Assignees

  • 宁德时代新能源科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260226

Claims (12)

  1. 1. A battery device, characterized in that the battery device comprises: a battery cell; A thermal management assembly for thermally managing the battery cells; The box subassembly, including box main part and end backplate, the box main part is formed with first space, the battery monomer with thermal management subassembly sets up in the first space, end backplate is connected the box main part deviates from first space one side, end backplate at least part with box main part interval is in order to form the second space, the box main part is provided with the hole, the hole intercommunication first space with the second space.
  2. 2. The battery device of claim 1, comprising a filter member coupled to the housing body and covering the aperture.
  3. 3. The battery device according to claim 2, wherein the filter member is attached to a side of the case body facing the first space.
  4. 4. The battery device of claim 2, wherein the number of said apertures and said filter elements are each plural, each of said apertures being covered with at least one of said filter elements.
  5. 5. The battery device of claim 1, wherein the housing body includes a bottom wall including a central region and an edge region, the battery cells being secured to the central region, the aperture being located in the edge region.
  6. 6. The battery device according to claim 5, wherein the number of the holes is plural, and the plural holes are arranged at intervals in a direction in which the edge region extends.
  7. 7. The battery device of claim 1, wherein the thermal management assembly includes a bussing member and at least one cooling plate, at least one of the cooling plates being coupled to the bussing member, the cooling plate being in contact with a large face of the battery cell, the large face area being greater than other surface areas of the battery cell.
  8. 8. The battery device according to claim 7, wherein the hole corresponds to a connection of the cooling plate and the confluence member in a gravitational direction.
  9. 9. The battery device of claim 1, wherein the battery device includes a liquid-absorbing member disposed in the second space.
  10. 10. The battery device according to any one of claims 1 to 9, wherein the case main body includes a side frame having a ring shape and a case bottom plate covering one side opening of the side frame, both of the case bottom plate and the bottom guard plate are connected to the side frame, and the hole is provided in the side frame.
  11. 11. The battery device according to claim 10, wherein the side frame includes a side frame main frame and a lateral connecting frame connected to the side frame main frame and extending toward the first space, the case bottom plate and the lateral connecting frame are connected, the bottom guard plate is connected to the lateral connecting frame and/or the side frame main frame, and the hole is provided in the lateral connecting frame.
  12. 12. An electricity consumption device, characterized in that it comprises a battery device according to any one of claims 1 to 11.

Description

Battery device and power utilization device Technical Field The application relates to the technical field of batteries, in particular to a battery device and an electric device. Background Energy conservation and emission reduction are key to sustainable development, so that the adjustment of an energy structure is promoted, and the development and application of a battery technology are promoted. The development of battery technology is critical to electrochemical energy storage technology, which has been widely used in portable electronic, electric vehicles and energy storage systems due to its advantages of high energy density, good cycling ability, high operating voltage, environmental protection, low self-discharge, etc. The battery device is internally provided with a thermal management component, and the thermal management component can exchange heat with battery cells in the battery device through liquid, however, if the leaked liquid of the thermal management component is not treated in time, the liquid is easy to contact with an electric conductor in the battery device, and a series of problems such as short circuit occur. Disclosure of utility model The application mainly aims to provide a battery device and an electric device, and aims to solve the technical problems in the prior art. In order to solve the problems, the application provides a battery device, which comprises a battery unit, a thermal management assembly and a box assembly, wherein the thermal management assembly is used for carrying out thermal management on the battery unit, the box assembly comprises a box body and a bottom guard plate, a first space is formed in the box body, the battery unit and the thermal management assembly are arranged in the first space, the bottom guard plate is connected to one side of the box body, which is away from the first space, the bottom guard plate is at least partially separated from the box body to form a second space, and the box body is provided with holes which are communicated with the first space and the second space. From this, thermal management subassembly and battery monomer all are located first space, and the thermal management subassembly of being convenient for carries out heat transfer to battery monomer and handles, and the box main part is provided with the hole, and hole intercommunication first space and second space, the liquid that the hole was allowed thermal management subassembly to spill get into the second space, can reduce the liquid that thermal management subassembly spilled and be in first space for a long time and cause the inside risk that appears short circuit of battery device, and then improve battery device's reliability. In some embodiments, the battery device includes a filter member coupled to the housing body and covering the aperture. Thus, the filter member covers the hole, and the impurity in the second space can be prevented from entering the first space through the hole, thereby further improving the reliability of the battery device. In some embodiments, the filter member is attached to the side of the housing body facing the first space. From this, filter element connects in box main part towards first space one side, can reduce filter element's the installation degree of difficulty to and reduce filter element and drop the risk of box main part. In some embodiments, the number of apertures and filter elements is multiple, each aperture being covered with at least one filter element. Therefore, the number of the holes and the number of the filtering parts are multiple, each hole is covered with at least one filtering part, the efficiency of liquid entering the second space from the first space can be improved, and the risk that the liquid leaked from the thermal management assembly is in the first space for a long time to cause short circuit inside the battery device is further reduced. In some embodiments, the housing body includes a bottom wall including a central region and an edge region, the battery cells being secured to the central region and the apertures being located in the edge region. Therefore, the battery monomer is fixed in the middle area and is positioned in the edge area, so that the risk of interference of the battery monomer with the hole can be improved, and the molding difficulty of the battery box can be reduced. In some embodiments, the number of holes is a plurality, the plurality of holes being spaced along the direction in which the edge region extends. Therefore, the efficiency of liquid entering the second space from the first space can be improved, and the risk of short circuit inside the battery device caused by long-term liquid leakage of the thermal management assembly in the first space is further reduced. In some embodiments, the thermal management assembly includes a bussing member and at least one cooling plate coupled to the bussing member, the cooling plate in contact with a large face of the battery cell,