Search

CN-224217586-U - Battery pack and power utilization device

CN224217586UCN 224217586 UCN224217586 UCN 224217586UCN-224217586-U

Abstract

The application discloses a battery pack and an electric device, and relates to the field of batteries. The battery pack comprises a box body, a plurality of liquid cooling supporting pieces and a plurality of single batteries. The box body comprises a body, a first side wall and a supporting part, wherein the first side wall and the supporting part are arranged at least at one end of the body along a second direction, the first side wall and the supporting part are arranged at intervals along the second direction to form a second accommodating space, the supporting part is provided with a avoidance groove, a plurality of liquid cooling supporting pieces are arranged in the box body at intervals along the first direction, two adjacent liquid cooling supporting pieces form a first accommodating space, at least one end of each liquid cooling supporting piece along the second direction is arranged in the second accommodating space in a penetrating manner, and a plurality of single batteries are arranged in the first accommodating space along the second direction. The battery pack provided by the application has the advantages that the fixing capability of the liquid cooling system is enhanced, and the stability, the reliability and the safety are improved.

Inventors

  • HAN ZHONGFENG

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250321

Claims (11)

  1. 1. A battery pack (100) having a first direction (X), a second direction (Y), and a third direction (Z) perpendicular to each other, the battery pack (100) comprising: The box body (110), the box body (110) comprises a body (119), a first side wall (117) and a supporting part (111), the body (119) is provided with the first side wall (117) and the supporting part (111) along at least one end of the second direction (Y), the first side wall (117) and the supporting part (111) are arranged at intervals along the second direction (Y) to form a second accommodating space (112), and the supporting part (111) is provided with an avoidance groove (1111); The liquid cooling supports (120) extend along the second direction (Y), the liquid cooling supports (120) are arranged in the box body (110) at intervals along the first direction (X), a first accommodating space (124) is formed by two adjacent liquid cooling supports (120), and at least one end of each liquid cooling support (120) along the second direction (Y) penetrates through the corresponding avoidance groove (1111) and is arranged in the corresponding second accommodating space (112); A plurality of unit cells (130) are arranged in the first accommodation space (124) along the second direction (Y).
  2. 2. The battery pack according to claim 1, wherein the liquid cooling support member (120) comprises a first support plate (121), a liquid cooling plate (122) and a second support plate (123), the first support plate (121) and the second support plate (123) are respectively connected to two ends of the liquid cooling plate (122) along the third direction (Z), the first support plate (121) is disposed on the bottom plate of the case (110), and at least one end of the liquid cooling plate (122) along the second direction is disposed through the avoidance groove (1111) and is disposed in the second accommodating space (112).
  3. 3. The battery pack according to claim 2, wherein the battery pack (100) further comprises a liquid cooling tube (140), the liquid cooling tube (140) is located in the second accommodating space (112), a current collector (1221) is provided at an end of the liquid cooling plate (122) near the supporting portion (111), and the liquid cooling tube (140) communicates with the current collector (1221); The liquid cooling plate (122) is provided with a liquid cooling runner (1222) and an opening (1223) communicated with the liquid cooling runner (1222), the current collector (1221) is covered on the opening (1223) and is provided with a current collector communicated with the opening (1223), and two ends of the current collector (1221) along the first direction (X) are respectively provided with connecting pipes (12211) communicated with the current collector and the liquid cooling pipe (140).
  4. 4. A battery pack according to claim 3, wherein the case (110) further includes a first connecting wall (1181), the first connecting wall (1181) is located in the second accommodating space (112) and is connected to the supporting portion (111) and the first side wall (117), the first connecting wall (1181) is provided with a limit groove (11811) adapted to the shape of the current collector (1221), and the limit groove (11811) is communicated with the avoidance groove (1111).
  5. 5. The battery pack according to claim 2, wherein an end of the second support plate (123) close to the support portion (111) is provided at a side of the support portion (111) away from the first support plate (121) in the third direction (Z).
  6. 6. The battery pack according to claim 5, wherein the battery pack (100) further comprises a fastener (150), a first connection hole (1231) is formed in the end, close to the support portion (111), of the second support plate (123), a second connection hole corresponding to the first connection hole (1231) is formed in the support portion (111), and the fastener (150) sequentially penetrates through the first connection hole (1231) and the second connection hole, so that the second support plate (123) is fastened to the support portion (111).
  7. 7. The battery pack according to claim 2, wherein an insulating adhesive layer (160) is provided between the first support plate (121) and the bottom plate of the case (110).
  8. 8. The battery pack according to claim 4, wherein one end of the unit cell (130) adjacent to the first support plate (121) along the third direction (Z) is provided with a first explosion-proof valve (131), a first exhaust passage (170) is formed adjacent to the two first support plates (121), the bottom plate of the case (110) and one end of the unit cell (130) adjacent to the first support plate (121), the first exhaust passage (170) extends along the second direction (Y), and the first explosion-proof valve (131) faces the bottom plate of the case (110) and is located in the first exhaust passage (170) with respect to the exposed portion of the unit cell (130).
  9. 9. The battery pack according to claim 8, wherein the case (110) further includes a second explosion-proof valve (114), a second connecting wall (1182) and a second side wall (116), the second connecting wall (1182) is located in the second accommodating space (112) and is respectively connected with the supporting portion (111) and the first side wall (117), the second connecting wall (1182) is disposed at a side, away from the liquid-cooled tube (140), of the first connecting wall (1181) along the third direction (Z) at intervals, so as to form a second exhaust channel (113), the second connecting wall (1182) is provided with a first exhaust hole (115), the second side wall (116) is disposed at one end, along the first direction (X), of the first side wall (117), the second side wall (116) is provided with a second exhaust hole (1161), the second exhaust channel (113) is respectively connected with the first exhaust hole (115) and the second exhaust hole (1161), and the first exhaust channel (116) is communicated with the second exhaust hole (1161) through the second exhaust hole (1161), and the second exhaust channel (170) is communicated with the first exhaust hole (116) through the second exhaust hole (116).
  10. 10. The battery pack according to claim 3, wherein the battery pack (100) further comprises a sealing member, and the sealing member is sleeved on the connecting pipe (12211) and is in contact with the inner wall of the liquid cooling pipe (140).
  11. 11. An electrical device comprising a battery pack (100) according to any one of claims 1 to 10.

Description

Battery pack and power utilization device Technical Field The application relates to the technical field of batteries, in particular to a battery pack and an electric device. Background The current new energy vehicles continue to grow at a high speed, the power battery is used as a core assembly part of the new energy vehicles, the safety and the reliability of the power battery directly relate to the safety and the reliability of the whole vehicle, and the use safety of a vehicle user is also directly influenced. However, in the existing new energy vehicle, a plurality of single batteries in a power battery pack have the problem of poor installation stability and reliability, so that the driving safety of the vehicle is affected. Disclosure of utility model The present application is directed to a battery pack, and aims to solve the technical problem that in the prior art, a plurality of single batteries inside the power battery pack have poor mounting stability and reliability, which results in influencing the driving safety of a vehicle. The technical scheme adopted is as follows: In a first aspect, an embodiment of the present application provides a battery pack, where the battery pack has a first direction, a second direction, and a third direction perpendicular to each other, and the battery pack includes: The box body comprises a body, a first side wall and a supporting part, wherein at least one end of the body along the second direction is provided with the first side wall and the supporting part, the first side wall and the supporting part are arranged at intervals along the second direction so as to form a second accommodating space, and the supporting part is provided with an avoidance groove; The liquid cooling support pieces extend along the second direction, are arranged in the box body at intervals along the first direction, form a first accommodating space, and penetrate through the avoidance groove at least one end of each liquid cooling support piece along the second direction to be arranged in the second accommodating space; The plurality of single batteries are arranged in the first accommodating space along the second direction. In one embodiment of the first aspect, the liquid cooling support member includes a first support plate, a liquid cooling plate and a second support plate, the first support plate and the second support plate are respectively connected to two ends of the liquid cooling plate along the third direction, the first support plate is disposed on the bottom plate of the box body, and at least one end of the liquid cooling plate along the second direction is disposed through the avoidance groove and is disposed in the second accommodating space. In one embodiment of the first aspect, the battery pack further includes a liquid cooling tube located in the second accommodating space, and a current collector is disposed at an end of the liquid cooling plate near the supporting portion, and the liquid cooling tube communicates with the current collector; The liquid cooling plate is provided with a liquid cooling flow channel and an opening communicated with the liquid cooling flow channel, the current collector is covered on the opening and is provided with a current collector cavity communicated with the opening, and connecting pipes respectively communicated with the current collector cavity and the liquid cooling pipe are arranged at two ends of the current collector along the first direction. In one embodiment of the first aspect, the case further includes a first connecting wall, where the first connecting wall is located in the second accommodating space and connected to the supporting portion and the first side wall, and the first connecting wall is provided with a limit groove adapted to the shape of the current collector, and the limit groove is communicated with the avoidance groove. In one embodiment of the first aspect, an end of the second support plate near the support portion is disposed on a side of the support portion away from the first support plate in the third direction. In one embodiment of the first aspect, the battery pack further includes a fastener, a first connection hole is formed at an end of the second support plate, which is close to the support portion, a second connection hole corresponding to the first connection hole is formed in the support portion, and the fastener sequentially penetrates through the first connection hole and the second connection hole, so that the second support plate is fastened and connected with the support portion. In one embodiment of the first aspect, an insulating adhesive layer is disposed between the first support plate and the bottom plate of the case. In one embodiment of the first aspect, a first explosion-proof valve is disposed at an end, close to the first support plate, of the single battery along the third direction, and a first exhaust channel is formed by two adjacent first support plates, the bottom