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CN-224204161-U - Battery pack

CN224204161UCN 224204161 UCN224204161 UCN 224204161UCN-224204161-U

Abstract

The application discloses a battery pack, and relates to the field of energy storage equipment. The battery pack comprises a battery box and a battery module arranged in the battery box. The battery module comprises a plurality of battery cells, the battery cells are distributed in at least two rows in the battery box, the plurality of battery cells belonging to the same row are distributed at intervals in the first direction, the at least two rows of battery cells are distributed at intervals in the second direction, and a main air channel extending along the first direction is formed between every two adjacent rows of battery cells. At least one side of the battery box in the first direction is provided with an air outlet, the air outlet is communicated with the main air duct, the air outlet is provided with an air outlet, and two opposite sides of the battery box in the second direction are respectively provided with an air inlet. The battery pack provided by the application has a better heat dissipation effect, so that the risk of overheating of the battery monomer can be reduced, and the safety of the battery pack is improved.

Inventors

  • HU XIANG
  • YANG JIANJUN
  • LI YULI
  • LIANG JUNHONG

Assignees

  • 深圳市欣旺达能源科技有限公司

Dates

Publication Date
20260505
Application Date
20250428

Claims (12)

  1. 1. The battery pack is characterized by comprising a battery box (100) and a battery module (200) arranged in the battery box (100), wherein the battery pack is provided with a first direction (X) and a second direction (Y) which form included angles, the battery module (200) comprises a plurality of battery cells (210), the battery cells (210) are arranged in at least two rows in the battery box (100), the battery cells (210) belonging to the same row are arranged at intervals in the first direction (X), at least two rows of the battery cells (210) are arranged at intervals in the second direction (Y), a main air duct (201) extending along the first direction (X) is formed between every two adjacent rows of the battery cells (210), an air outlet (121) is formed in at least one side of the battery box (100) in the first direction (X), the air outlet (121) is communicated with the main air duct (201), and the air outlet (121) is provided with air outlets (122), and air inlets (141) are respectively formed in two opposite sides of the battery box (100) in the second direction (Y).
  2. 2. The battery pack according to claim 1, further comprising a wind scooper (150), the wind scooper (150) having a first opening (151) and a second opening (152) opposite in the first direction (X), the first opening (151) being in communication with the air outlet (121), the second opening (152) being in communication with the main air duct (201).
  3. 3. The battery pack according to claim 2, wherein a fan housing (123) is provided inside the battery case (100), one end of the fan housing (123) is communicated with the air outlet (121), the other end is communicated with the first opening (151) of the air guide housing (150), and the air exhaust fan (122) is provided in a cavity of the fan housing (123).
  4. 4. The battery pack according to claim 1, wherein the battery cell (210) is a square-case battery, the battery cell (210) having two first sides (211) spaced apart in the first direction (X) and two second sides (212) spaced apart in the second direction (Y), the first sides (211) having an area larger than an area of the second sides (212).
  5. 5. The battery pack according to claim 1, wherein a separator assembly (250) is provided between two adjacent battery cells (210) in the same column, the separator assembly (250) comprises a separator body (251) and buffer members (252) disposed on two sides of the separator body (251), the buffer members (252) on two sides of the separator body (251) are respectively used for abutting the two adjacent battery cells (210), and a gap is formed between the separator body (251) and the battery cells (210).
  6. 6. The battery pack according to claim 1, wherein the battery case (100) further includes a dust screen (142), the dust screen (142) covering the air inlet (141).
  7. 7. The battery pack according to claim 1, wherein the battery module (200) further comprises a heating film (260), the heating film (260) being attached to one side of the battery cell (210) in a third direction (Z), the third direction (Z) being perpendicular to the first direction (X) and the second direction (Y).
  8. 8. The battery pack according to claim 7, wherein the battery case (100) includes a heat radiation plate (111), the heat radiation plate (111) has opposite inner and outer sides, the inner side of the heat radiation plate (111) is attached to the heating film (260), the outer side of the heat radiation plate (111) is exposed to the outer surface of the battery case (100), and a plurality of fins are provided on the outer side of the heat radiation plate (111).
  9. 9. The battery pack of any of claims 1-8, wherein the exhaust fan (122) operates with less than 35 db noise.
  10. 10. The battery pack according to any one of claims 1-8, wherein the battery box (100) comprises a box body (101) and a box cover (102), the box body (101) comprises a back plate (110), a first end plate (120), a second end plate (130) and two side plates (140), the first end plate (120) and the second end plate (130) are arranged at intervals in the first direction (X), the two side plates (140) are arranged at intervals in the second direction (Y), the air outlet (121) is arranged in the first end plate (120), the air inlet (141) is respectively arranged in the two side plates (140), the box cover (102) is spaced from the back plate (110) in a third direction (Z), and the box cover (102) is detachably connected to one end of the first end plate (120), the second end plate (130) and the side plates (140) away from the back plate (110), and the third direction (Z) is perpendicular to the first direction (X) and the second direction (Y).
  11. 11. The battery pack according to claim 10, wherein the battery module (200) is mounted to the back plate (110), the side of the main air duct (201) close to the back plate (110) is blocked by the back plate (110), the battery box (100) further comprises a wind shielding member (160), and the wind shielding member (160) blocks the side of the main air duct (201) close to the box cover (102).
  12. 12. The battery pack according to claim 10, wherein the battery case (100) further comprises a support foot (131), the support foot (131) being provided to the second end plate (130).

Description

Battery pack Technical Field The application relates to the technical field of energy storage equipment, in particular to a battery pack. Background In the prior art, a battery pack serving as energy storage equipment is often applied to new energy automobiles and commercial places and is used for supplying power to electric equipment. The battery package includes the battery box and sets up a plurality of battery monomers in the battery box, and the battery package can produce heat when charging and discharging, and the reliability of battery package operation can be influenced to too high temperature, brings the security risk even. In the related art, a corresponding heat dissipation structure is used to dissipate heat of the battery pack, for example, a fan is used to perform air cooling. However, the existing air cooling mode has poor heat dissipation uniformity, the local area of the battery pack or the local surface of part of the battery cells is still high in temperature, and particularly the surfaces among the battery cells are difficult to be cooled by air flow, so that the existing battery pack has poor heat dissipation effect. Disclosure of utility model The application aims to provide a battery pack which has better heat dissipation performance and better safety. Embodiments of the application may be implemented as follows: The application provides a battery pack, which comprises a battery box and a battery module arranged in the battery box, wherein the battery pack is provided with a first direction and a second direction which form an included angle, the battery module comprises a plurality of battery cells, the battery cells are arranged in at least two rows in the battery box, the plurality of battery cells belonging to the same row are arranged at intervals in the first direction, the at least two rows of battery cells are arranged at intervals in the second direction, a main air duct extending along the first direction is formed between the adjacent two rows of battery cells, at least one side of the battery box in the first direction is provided with an air outlet, the air outlet is communicated with the main air duct, the air outlet is provided with an air outlet, and two opposite sides of the battery box in the second direction are respectively provided with an air inlet. In an alternative embodiment, the battery pack further includes a wind scooper having a first opening and a second opening opposite in a first direction, the first opening communicating with the air outlet, the second opening communicating with the main air duct. In an alternative embodiment, a fan cover body is arranged on the inner side of the battery box, one end of the fan cover body is communicated with the air outlet, the other end of the fan cover body is communicated with the first opening of the air guide cover, and the air outlet is arranged in the cavity of the fan cover body. In an alternative embodiment, the battery cell is a square-case battery cell having two first sides spaced in a first direction and two second sides spaced in a second direction, the first sides having an area greater than the area of the second sides. In an alternative embodiment, a separator assembly is arranged between two adjacent battery cells in the same row, the separator assembly comprises a separator body and buffer pieces arranged on two sides of the separator body, the buffer pieces on two sides of the separator body are respectively used for abutting the two adjacent battery cells, and a gap is formed between the separator body and the battery cells. In an alternative embodiment, the battery box further comprises a dust screen covering the air inlet. In an alternative embodiment, the battery module further includes a heating film attached to one side of the battery cell in a third direction, and the third direction is perpendicular to the first direction and the second direction. In an alternative embodiment, the battery case comprises a heat dissipation plate, the heat dissipation plate has an inner side and an outer side opposite to each other, the inner side of the heat dissipation plate is attached to the heating film, the outer side of the heat dissipation plate is exposed to the outer surface of the battery case, and a plurality of fins are arranged on the outer side of the heat dissipation plate. In an alternative embodiment, the exhaust fan operates with less than 35 db noise. In an alternative embodiment, the battery box comprises a box body and a box cover, wherein the box body comprises a back plate, a first end plate, a second end plate and two side plates, the first end plate and the second end plate are arranged at intervals in the first direction, the two side plates are arranged at intervals in the second direction, an air outlet is formed in the first end plate, air inlets are respectively formed in the two side plates, the box cover is spaced from the back plate in the third direction, the box cover is d