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CN-224232871-U - Box assembly, battery device and power utilization device

CN224232871UCN 224232871 UCN224232871 UCN 224232871UCN-224232871-U

Abstract

The application discloses a box assembly, a battery device and an electric device. The battery device comprises a box body assembly, the box body assembly comprises a first conductor, a second conductor and an equipotential component, the first conductor is provided with a first through hole penetrating through the surfaces of the two opposite sides of the first conductor, the second conductor is provided with a second through hole penetrating through the surfaces of the two opposite sides of the second conductor, the first through hole and the second through hole are correspondingly arranged, the equipotential component comprises a first fixing part, a second fixing part and a first connecting part, the first connecting part is connected with the first fixing part and the second fixing part respectively, the first connecting part is at least partially arranged in the first through hole and the second through hole, the first fixing part is abutted against one side of the first conductor, which is away from the second conductor, so that the first fixing part is electrically connected with the first conductor, and the second fixing part is abutted against one side of the second conductor, which is away from the first conductor, so that the second fixing part is electrically connected with the second conductor. The first conductor and the second conductor can achieve equipotential without direct contact.

Inventors

  • YANG HUI
  • WANG QING
  • CHEN ZHILING

Assignees

  • 宁德时代新能源科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250318

Claims (13)

  1. 1. A battery device, characterized in that the battery device comprises: The box subassembly and battery monomer subassembly, the box subassembly is used for holding battery monomer subassembly, the box subassembly includes: The first conductor is provided with a first through hole penetrating through the surfaces of the two back sides of the first conductor; the second conductor is provided with a second through hole penetrating through the surfaces of the two sides of the back of the second conductor, and the first through hole and the second through hole are correspondingly arranged; Equipotential spare, including first fixed part, second fixed part and first connecting portion, first connecting portion connect respectively first fixed part with second fixed part, first connecting portion at least partly set up first through-hole with in the second through-hole, first fixed part butt is in first electric conductor deviates from second electric conductor one side, so that first fixed part with first electric conductor electricity is connected, second fixed part butt is in second electric conductor deviates from first electric conductor one side, so that second fixed part with second electric conductor electricity is connected.
  2. 2. The battery device of claim 1, wherein the battery device comprises a separator layer disposed between the first electrical conductor and the second electrical conductor.
  3. 3. The battery device of claim 2, wherein the separator layer comprises an insulating layer; And/or the isolation layer comprises a metal isolation layer, and the potential of the metal isolation layer is located between the potential of the first conductor and the potential of the second conductor.
  4. 4. A battery device according to any one of claims 1 to 3, wherein the potential of the equipotential member is between the potential of the first electrical conductor and the potential of the second electrical conductor.
  5. 5. The battery device of claim 4, wherein a potential difference between the equipotential member and the first electrical conductor is less than 25mv and/or a potential difference between the equipotential member and the second electrical conductor is less than 25mv.
  6. 6. The battery device according to claim 4, wherein a surface of the equipotential member in contact with the first conductor and the second conductor is plated with a metal conductive layer, and a potential of the metal conductive layer is between a potential of the first conductor and a potential of the second conductor.
  7. 7. The battery device according to any one of claims 1 to 6, characterized in that the battery device includes a third electric conductor that is in contact with a side of the second fixing portion facing away from the second electric conductor so as to be electrically connected with at least one of the first electric conductor and the second electric conductor.
  8. 8. The battery device according to claim 7, wherein the equipotential member includes a second connecting portion and a third fixing portion, the third conductive body has a third through hole penetrating through both back side surfaces of the third conductive body, the first connecting portion and the second connecting portion are connected, and the third fixing portion abuts on a side of the third conductive body facing away from the second fixing portion.
  9. 9. The battery device according to claim 7 or 8, wherein the third electric conductor includes a reinforcing plate.
  10. 10. The battery device of any one of claims 1 to 9, wherein the first electrical conductor comprises a module mounting beam for fixedly mounting the battery cell assembly.
  11. 11. The battery device according to any one of claims 1 to 10, wherein the second electrical conductor includes a case bottom plate and a thermal management member.
  12. 12. A tank assembly, the tank assembly comprising: The first conductor is provided with a first through hole penetrating through the surfaces of the two back sides of the first conductor; the second conductor is provided with a second through hole penetrating through the surfaces of the two sides of the back of the second conductor, and the first through hole and the second through hole are correspondingly arranged; Equipotential spare, including first fixed part, second fixed part and first connecting portion, first connecting portion connect respectively first fixed part with second fixed part, first connecting portion at least partly set up first through-hole with in the second through-hole, first fixed part butt is in first electric conductor deviates from second electric conductor one side, so that first fixed part with first electric conductor electricity is connected, second fixed part butt is in second electric conductor deviates from first electric conductor one side, so that second fixed part with second electric conductor electricity is connected.
  13. 13. An electricity consumption device, characterized in that it comprises a battery device according to any one of claims 1 to 11.

Description

Box assembly, battery device and power utilization device Technical Field The application relates to the technical field of batteries, in particular to a box assembly, 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 comprises a battery box and battery cells positioned in the battery box, the battery box generally comprises a plurality of mutually connected conductor components, potential differences exist among different conductor components, and the technical problem of how to perform equipotential connection among different conductor components is needed to be solved. Disclosure of utility model The application mainly aims to provide a box assembly, 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 box assembly and a battery unit assembly, wherein the box assembly is used for accommodating the battery unit assembly, the box assembly comprises a first conductor, a second conductor and an equipotential member, the first conductor is provided with a first through hole penetrating through the back side surfaces of the first conductor, the second conductor is provided with a second through hole penetrating through the back side surfaces of the second conductor, the first through hole and the second through hole are correspondingly arranged, the equipotential member comprises a first fixing part, a second fixing part and a first connecting part, the first connecting part is connected with the first fixing part and the second fixing part, the first connecting part is at least partially arranged in the first through hole and the second through hole, the first fixing part is abutted against one side of the first conductor, which is away from the second conductor, so that the first fixing part and the first conductor are electrically connected, and the second fixing part is abutted against one side of the second conductor, which is abutted against the first conductor, and the first conductor are electrically connected. Through the above embodiment, first through-hole and second through-hole correspond the setting, be convenient for first connecting portion inserts simultaneously in first through-hole and second through-hole, first connecting portion is connected to first fixed part and butt is deviating from second conductor one side at first conductor, first connecting portion is connected to second fixed part and butt is deviating from first conductor one side at the second conductor, can make first conductor and second conductor pass through equipotential spare electricity connection on the basis of direct contact not, make realize equipotential between first conductor and the second conductor, the risk of equipotential connection inefficacy between still can reduce first conductor and the second conductor through the equipotential spare simultaneously. In some embodiments, the battery device includes a separator layer disposed between the first electrical conductor and the second electrical conductor. Thereby, the isolation layer is arranged between the first conductor and the second conductor, and the risk of corrosion of the first conductor and the second conductor due to direct contact can be reduced by the isolation layer. In some embodiments, the isolation layer comprises an insulating layer, and/or the isolation layer comprises a metal isolation layer having a potential between the potential of the first electrical conductor and the potential of the second electrical conductor. Thereby, by providing an insulating layer between the first and second electrical conductors such that the first and second electrical conductors are electrically insulated from each other, or by providing a metal isolating layer between the first and second electrical conductors, the potential of which is between the potential of the first electrical conductor and the potential of the second electrical conductor, the risk of corrosion of the first and second electrical conductors due to direct contact is reduced. In some embodiments, the potential of the equipotential member is between the potential of the first electrical conductor and the potential of the second electrical conductor. Thus, the potential of the equipotential member is between the potential of the first conductor and the potential of the second conductor, and the r