Search

CN-224217639-U - Battery pack and electricity utilization device

CN224217639UCN 224217639 UCN224217639 UCN 224217639UCN-224217639-U

Abstract

The application discloses a battery pack and an electricity utilization device, wherein the battery pack comprises a box body and a plurality of battery units, the box body comprises a first plate and a second plate, the first plate is provided with a first channel and a first vent hole, the first vent hole is communicated with the first channel, the second plate is arranged on one side of the first plate, provided with the first vent hole, and connected with the first plate for enclosing into a containing cavity, the second plate is provided with a second channel, a third vent hole and a plurality of second vent holes, the second vent holes penetrate one side of the second plate and are communicated with the second channel, the third vent hole is communicated with the second channel and the first vent hole in a sealing way, the second plate can move to adjust the size of the containing cavity, a plurality of battery units are arranged in the containing cavity, electrode terminals and pressure release pieces are respectively arranged on two sides of each battery unit, one side of each battery unit, provided with the pressure release pieces are connected with one side of the second plate, and at least part of orthographic projection of each pressure release piece on the second plate is positioned in one second vent hole.

Inventors

  • GUO YUYING
  • ZHAO HONGYE
  • ZHU GUOXU

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250415

Claims (11)

  1. 1. A battery pack having intersecting first and second directions, comprising: a housing having at least one receiving cavity, the housing comprising: The first plate is provided with a first channel and a first exhaust hole, and the first exhaust hole penetrates through one side of the first plate, which is close to the accommodating cavity, and is communicated with the first channel; The first plate is provided with a first air vent, the first plate is provided with a first channel, a second air vent and a plurality of first air vents which are arranged at intervals along the first direction, the first channel extends along the first direction, the first air vent penetrates through one side of the first plate along the second direction and is communicated with the first channel, the second air vent penetrates through one side of the first plate close to the first plate and is communicated with the second channel, the second plate can move along the second direction, and the third air vent is communicated with the first air vent in a sealing way; The battery unit is provided with an electrode terminal and a pressure relief piece along two sides of the second direction, one side of the battery unit provided with the pressure relief piece is connected with one side of the second plate provided with the second exhaust hole, and at least part of orthographic projection of each pressure relief piece on the second plate is positioned in one second exhaust hole.
  2. 2. The battery pack of claim 1, wherein the battery pack comprises a plurality of battery cells, The first plate is provided with a first chute, the first chute is arranged on one side of the first plate facing the second plate, and the first exhaust hole penetrates through the bottom of the first chute and is communicated with the first chute; the second plate includes: The first exhaust hole penetrates through one side of the first body along the second direction; The first sliding block is connected to one side of the first body, which faces the first plate, and inserted into the first sliding groove and can slide in the first sliding groove along the second direction, the second channel penetrates through one side of the first body, which is close to the first plate, and the third exhaust hole penetrates through the first sliding block and is communicated with the second channel.
  3. 3. The battery pack of claim 2, wherein the battery pack comprises a plurality of battery cells, The first plate is provided with a second chute, the second chute is arranged on one side of the first plate facing the second plate, and the second chute is arranged on one side of the first chute along the second direction and is communicated with the first chute; The second plate further comprises a second sliding block, the second sliding block is connected to one side of the first sliding block, and the second sliding block is inserted into the second sliding groove and can slide in the second sliding groove along the second direction.
  4. 4. The battery pack of claim 3, wherein the battery pack comprises a plurality of battery cells, The first plate is provided with a third chute which is arranged on one side of the first chute far away from the second chute along the second direction and communicated with the first chute; The second plate comprises a third sliding block, the third sliding block is connected to one side, away from the second sliding block, of the first sliding block along the second direction, the third sliding block is inserted into the third sliding groove and can move in the third sliding groove along the second direction.
  5. 5. The battery pack of claim 4, further comprising a third direction intersecting the first direction and the second direction, wherein a dimension of the third vent in the second direction is greater than a dimension of the first vent in the second direction, wherein a dimension of the third vent in the third direction is less than or equal to a dimension of the first channel, wherein an orthographic projection of the first slider on the first plate in the first direction covers the first vent, and wherein the third vent communicates with the first vent.
  6. 6. The battery pack of claim 5, wherein the first slider has a size that is smaller than the size of the first runner in the second direction, a sum of the size of the first slider and the size of the second slider is larger than the size of the first runner, and a sum of the size of the first slider and the size of the third slider is larger than the size of the first runner, and the size of the first runner is larger than the size of the second runner in the third direction.
  7. 7. The battery pack according to claim 1, wherein the case further comprises a third plate member disposed on a side of the second plate member away from the first plate member in the first direction, a fourth slide groove disposed on a side of the third plate member adjacent to the second plate member, the fourth slide groove extending in the second direction, and a fourth slider inserted in the fourth slide groove and capable of sliding in the fourth slide groove in the second direction.
  8. 8. The battery pack of claim 7, wherein the battery pack comprises a plurality of battery cells, The box body further comprises a fourth plate, wherein the fourth plate is arranged opposite to the second plate along the second direction, a fifth sliding groove is formed in one side, facing the second plate, of the fourth plate, and the first plate, the second plate, the third plate and the fourth plate enclose a containing cavity; The third plate comprises a second body and a fifth sliding block, the fourth sliding groove is formed in one side, facing the second plate, of the second body, the fifth sliding block is arranged on one side, close to the fourth plate, of the second body, the fifth sliding block is inserted into the fifth sliding groove, and the fifth sliding block can move in the fifth sliding groove along the first direction.
  9. 9. The battery pack of claim 8, wherein the battery pack comprises a plurality of battery cells, The box further includes: The fifth plate is arranged on one side, far away from the fourth plate, of the second plate, and the accommodating cavity is formed by the fifth plate, the first plate, the second plate and the third plate in an enclosing mode; a sixth sliding groove is formed in one side, facing the second plate, of the fifth plate, the third plate further comprises a sixth sliding block, the sixth sliding block is connected to one side, far away from the fifth sliding block, of the second body, the sixth sliding block is inserted into the sixth sliding groove, and the sixth sliding block can move in the sixth sliding groove along the first direction; The second plate is arranged between the fifth plate and the fourth plate at intervals along the second direction, and the second exhaust holes are formed in two sides of the second plate along the second direction; The first plate is provided with a plurality of first exhaust holes, the first exhaust holes are arranged at intervals along the second direction, the second plate is connected with the first plate, and the third exhaust hole of each second plate is communicated with one first exhaust hole in a sealing way; the battery pack comprises a plurality of battery packs arranged along the second direction, two adjacent battery packs are arranged on two sides of one second plate along the second direction, pressure release pieces of each battery pack are arranged towards the second plate, and the pressure release pieces are arranged opposite to one second exhaust hole.
  10. 10. The battery pack of claim 1, wherein the battery pack comprises a plurality of battery cells, The first plate is also provided with a pressure relief hole, the pressure relief hole is arranged on one side of the first plate, which is far away from the second plate, and the pressure relief hole is communicated with the first channel; The box body further comprises an explosion-proof valve, wherein the explosion-proof valve is connected with the first plate and covers the pressure relief hole.
  11. 11. An electrical device comprising a battery pack as claimed in any one of claims 1 to 10.

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 For a non-module battery pack, a cavity is formed by enclosing a side beam and a middle beam of the box body so as to limit and fix the battery cells, so that the battery pack with the structure is stable in structure, but the battery pack with the structure has the structure that the box body with the structure size can only correspondingly accommodate the battery cells with the structure size, so that the battery box body cannot be flexibly applied, and the production of the battery pack is not facilitated. Disclosure of utility model The embodiment of the utility model provides a battery pack, which aims to solve the problem that the battery pack cannot be flexibly applied due to the fact that the existing box body can only accommodate battery monomers with one size, and is not beneficial to production of the battery pack. The battery pack provided by the embodiment of the application has a first direction and a second direction which are intersected, and comprises: a housing having at least one receiving cavity, the housing comprising: The first plate is provided with a first channel and a first exhaust hole, and the first exhaust hole penetrates through one side, close to the accommodating cavity, of the first plate along the first direction and is communicated with the first channel; The first plate is provided with a first air vent, the first plate is provided with a first channel, a second air vent and a plurality of first air vents which are arranged at intervals along the first direction, the first channel extends along the first direction, the first air vent penetrates through one side of the first plate along the second direction and is communicated with the first channel, the second air vent penetrates through one side of the first plate close to the first plate and is communicated with the second channel, the second plate can move along the second direction, and the third air vent is communicated with the first air vent in a sealing way; The battery unit is provided with an electrode terminal and a pressure relief piece along two sides of the second direction, one side of the battery unit provided with the pressure relief piece is connected with one side of the second plate provided with the second exhaust hole, and at least part of orthographic projection of each pressure relief piece on the second plate is positioned in one second exhaust hole. In some embodiments of the present invention, in some embodiments, The first plate is provided with a first chute, the first chute is arranged on one side of the first plate facing the second plate, and the first exhaust hole penetrates through the bottom of the first chute and is communicated with the first chute; the second plate includes: The first exhaust hole penetrates through one side of the first body along the second direction; The first sliding block is connected to one side of the first body, which faces the first plate, and inserted into the first sliding groove and can slide in the first sliding groove along the second direction, the second channel penetrates through one side of the first body, which is close to the first plate, and the third exhaust hole penetrates through the first sliding block and is communicated with the second channel. In some embodiments of the present invention, in some embodiments, The first plate is provided with a second chute, the second chute is arranged on one side of the first plate facing the second plate, and the second chute is arranged on one side of the first chute along the second direction and is communicated with the first chute; The second plate further comprises a second sliding block, the second sliding block is connected to one side of the first sliding block, and the second sliding block is inserted into the second sliding groove and can slide in the second sliding groove along the second direction. In some embodiments of the present invention, in some embodiments, The first plate is provided with a third chute which is arranged on one side of the first chute far away from the second chute along the second direction and communicated with the first chute; The second plate comprises a third sliding block, the third sliding block is connected to one side, away from the second sliding block, of the first sliding block along the second direction, the third sliding block is inserted into the third sliding groove and can move in the third sliding groove along the second direction. In some embodiments, the battery pack further has a third direction intersecting the first direction and the second direction, a dimension of the third vent hole along the second direction being greater than a dimension of the first vent hole along the second direction, the dimension of the third vent hole along the third dir