CN-224217522-U - Battery pack and electricity utilization device

Abstract

The application discloses a battery pack and an electricity utilization device, wherein the battery pack comprises a box body, a battery monomer, a connecting conductor and an acquisition terminal, the box body is provided with a containing cavity, the battery monomer, the connecting conductor and the acquisition terminal are all arranged in the containing cavity, the connecting conductor is in conductive connection with the battery monomer, the acquisition terminal comprises a conductive part, a circuit board, a voltage acquisition wire harness, a plurality of temperature acquisition wire harnesses and a temperature acquisition unit, the conductive part is in conductive connection with the connecting conductor, the circuit board is arranged on one side of the conductive part far away from the connecting conductor and in conductive connection with the conductive part, the voltage acquisition wire harness is respectively in conductive connection with the circuit board and the conductive part, the plurality of temperature acquisition wire harnesses are respectively in conductive connection with the circuit board and the temperature acquisition wire harness, and the temperature acquisition unit is respectively in conductive connection with the circuit board and the temperature acquisition wire harness. The acquisition terminal provided by the application realizes that the voltage signal and the temperature signal are integrated in one acquisition terminal, reduces the material and assembly cost, reduces the occupation of the surface space of the connecting conductor, and improves the assembly efficiency.

Inventors

• PAN ZHIJIAN
• LIU GUANGQIANG
• LIAO ZHI
• Liao Qitao
• YUAN YUJIAO

Assignees

• 欣旺达动力科技股份有限公司

Dates

Publication Date

20260508

Application Date

20250521

Claims (10)

1. 1. A battery pack, comprising: the box body is provided with a containing cavity; the battery unit is arranged in the accommodating cavity; the connecting conductor is arranged in the accommodating cavity and is in conductive connection with the battery cell; The collecting terminal is arranged in the accommodating cavity and is in conductive connection with the connecting conductor; The acquisition terminal includes: A conductive portion electrically connected to the connection conductor; The circuit board is arranged on one side of the conductive part far away from the connecting conductor and is in conductive connection with the conductive part; The voltage acquisition wire harness is respectively connected with the circuit board and the conductive part in a conductive way; The temperature acquisition wire harnesses are electrically connected with the circuit board; And the temperature acquisition unit is respectively connected with the circuit board and the temperature acquisition wire harness in a conductive manner.
2. 2. The battery pack according to claim 1, wherein the temperature acquisition unit is disposed on a side of the circuit board facing away from the conductive portion and is electrically connected to the circuit board.
3. 3. The battery pack of claim 2, wherein the circuit board comprises: A plate body; a plurality of first pads disposed on the outer peripheral side of the board body and electrically connected to the conductive portions; The second bonding pad is arranged on one side of the plate body, which is away from the conductive part, and is respectively connected with the first bonding pad and the voltage acquisition wire harness in a conductive manner; The third bonding pads are arranged on one side of the plate body, which is away from the conductive part, and are electrically connected with the temperature acquisition unit; And the fourth bonding pads are arranged on one side of the plate body, which is away from the conductive part, and each fourth bonding pad is respectively and conductively connected with one third bonding pad and one temperature acquisition wire harness.
4. 4. The battery pack of claim 3, wherein the battery pack comprises a plurality of battery cells, The plate body is provided with an avoidance hole, the avoidance hole penetrates through the plate body along the arrangement direction of the connecting conductor and the conductive part, and the orthographic projection part of the temperature acquisition unit on the plate body is positioned in the avoidance hole; The collecting terminal further comprises a heat conducting adhesive layer, wherein the heat conducting adhesive layer is arranged in the avoidance hole and is respectively connected with the electric conduction part and the temperature collecting unit.
5. 5. The battery pack of claim 4, wherein the battery pack comprises a plurality of battery cells, The conductive part is provided with a first mounting hole, and the first mounting hole penetrates through the conductive part; the connecting conductor is provided with a second mounting hole, and the second mounting hole penetrates through the connecting conductor; The battery pack further comprises a locking piece, wherein the locking piece penetrates through the first mounting hole and the second mounting hole and is respectively connected with the conductive part and the connecting conductor in a conductive mode.
6. 6. The battery pack of claim 5, wherein the circuit board is disposed on a side of the first mounting hole, and the voltage acquisition harness and the temperature acquisition harness are disposed on a side of the circuit board remote from the first mounting hole.
7. 7. The battery pack of claim 5, wherein the relief hole is disposed on a side of the plate body adjacent to the first mounting hole, and the relief hole penetrates through a side of the plate body adjacent to the first mounting hole.
8. 8. The battery pack according to claim 5, wherein the conductive portion includes: The body is provided with the first mounting hole, the first mounting hole penetrates through the body, and the body is respectively connected with the connecting conductor and the circuit board in a conductive manner; The rotation stopping piece is connected to one side of the body, facing the connecting conductor, and is arranged adjacent to the connecting conductor.
9. 9. The battery pack of claim 8, wherein the body is integrally connected with the rotation stop member.
10. 10. An electrical device comprising a battery pack according to any one of claims 1-9.

Description

Battery pack and electricity utilization device Technical Field The application belongs to the technical field of batteries, and particularly relates to a battery pack and an electric device. Background The battery management system in the battery pack is internally provided with a voltage signal acquisition terminal and a temperature signal acquisition terminal which are respectively used for acquiring and connecting voltage signals and temperature signals on the copper bars so as to judge the working state of the battery management system. Two kinds of collection terminals use simultaneously, not only occupy the space of connecting the copper bar surface, still need the fixed knot of two sets of collection terminals construct and assemble fixedly respectively, lead to the cost to increase. Disclosure of utility model The embodiment of the utility model provides a battery pack, which aims to solve the problems that the existing battery pack adopts two acquisition terminals to acquire voltage signals and temperature signals respectively, so that the surface space of a connecting copper bar is occupied and the cost is increased. The battery pack provided by the embodiment of the application comprises the following components: the box body is provided with a containing cavity; the battery unit is arranged in the accommodating cavity; the connecting conductor is arranged in the accommodating cavity and is in conductive connection with the battery cell; The collecting terminal is arranged in the accommodating cavity and is in conductive connection with the connecting conductor; The acquisition terminal includes: A conductive portion electrically connected to the connection conductor; The circuit board is arranged on one side of the conductive part far away from the connecting conductor and is in conductive connection with the conductive part; The voltage acquisition wire harness is respectively connected with the circuit board and the conductive part in a conductive way; The temperature acquisition wire harnesses are electrically connected with the circuit board; And the temperature acquisition unit is respectively connected with the circuit board and the temperature acquisition wire harness in a conductive manner. In some embodiments, the temperature acquisition unit is disposed on a side of the circuit board facing away from the conductive portion and is electrically connected to the circuit board. In some embodiments, the circuit board comprises: A plate body; a plurality of first pads disposed on the outer peripheral side of the board body and electrically connected to the conductive portions; The second bonding pad is arranged on one side of the plate body, which is away from the conductive part, and is respectively connected with the first bonding pad and the voltage acquisition wire harness in a conductive manner; The third bonding pads are arranged on one side of the plate body, which is away from the conductive part, and are electrically connected with the temperature acquisition unit; And the fourth bonding pads are arranged on one side of the plate body, which is away from the conductive part, and each fourth bonding pad is respectively and conductively connected with one third bonding pad and one temperature acquisition wire harness. In some embodiments of the present invention, in some embodiments, The plate body is provided with an avoidance hole, the avoidance hole penetrates through the plate body along the arrangement direction of the connecting conductor and the conductive part, and the orthographic projection part of the temperature acquisition unit on the plate body is positioned in the avoidance hole; The collecting terminal further comprises a heat conducting adhesive layer, wherein the heat conducting adhesive layer is arranged in the avoidance hole and is respectively connected with the electric conduction part and the temperature collecting unit. In some embodiments of the present invention, in some embodiments, The conductive part is provided with a first mounting hole, and the first mounting hole penetrates through the conductive part; the connecting conductor is provided with a second mounting hole, and the second mounting hole penetrates through the connecting conductor; The battery pack further comprises a locking piece, wherein the locking piece penetrates through the first mounting hole and the second mounting hole and is respectively connected with the conductive part and the connecting conductor in a conductive mode. In some embodiments, the circuit board is disposed on a side of the first mounting hole, and the voltage acquisition harness and the temperature acquisition harness are disposed on a side of the circuit board remote from the first mounting hole. In some embodiments, the relief hole is disposed on a side of the plate body adjacent to the first mounting hole, and the relief hole penetrates through a side of the plate body adjacent to the first mounting hole. In some