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CN-224232716-U - Battery pack and electric equipment

CN224232716UCN 224232716 UCN224232716 UCN 224232716UCN-224232716-U

Abstract

The application relates to the technical field of heat dissipation of power batteries and discloses a battery pack and electric equipment, wherein the battery pack comprises a shell, a first battery module, a second battery module and a fan; the shell is provided with a first ventilation opening, a plurality of second ventilation openings and a plurality of third ventilation openings, the first battery module is positioned between the first ventilation opening and the second ventilation openings, the second battery module is positioned between the first ventilation openings and the third ventilation openings, the first battery module comprises a plurality of first battery units, a first gap is arranged between the first battery units, the first gap is communicated with the second ventilation openings, the second battery module comprises a plurality of second battery units, a second gap is arranged between the second battery units, the second gap is communicated with the third ventilation openings, a heat dissipation channel is formed in the shell, and the fan is used for driving airflow to dissipate heat of the first battery module and the second battery module. Through the mode, the heat dissipation capacity and heat dissipation balance of the battery pack can be improved.

Inventors

  • ZHENG SHI
  • YANG GUANGHUI
  • ZHANG JIE

Assignees

  • 深圳国瑞协创储能技术有限公司

Dates

Publication Date
20260512
Application Date
20250507

Claims (10)

  1. 1. The battery pack is characterized by comprising a shell, a first battery module, a second battery module and a fan; A first ventilation opening is formed in the middle position of one side of the shell along the first direction, and a plurality of second ventilation openings and a plurality of third ventilation openings are respectively formed in two sides of the shell along the second direction, wherein the first direction is perpendicular to the second direction; the first battery module and the second battery module are both arranged in the shell and are electrically connected with each other, the first battery module is positioned between the first ventilation opening and the second ventilation opening along the second direction, and the second battery module is positioned between the first ventilation opening and the third ventilation opening along the second direction; The first battery module comprises a plurality of first battery cells arranged along the first direction, the first battery cells are electrically connected with each other, a first gap is formed between every two adjacent first battery cells, and the first gaps are correspondingly communicated with the second ventilation openings one by one; The second battery module comprises a plurality of second battery cells arranged along the first direction, the second battery cells are electrically connected with each other, a second gap is arranged between two adjacent second battery cells, and the second gaps are communicated with the third air vents in a one-to-one correspondence manner; A heat dissipation channel is formed in the region, located between the first battery module and the second battery module, of the shell, and the heat dissipation channel is communicated with the first ventilation opening, the first gap and the second gap respectively; The fan is arranged at the first ventilation opening, and is used for driving air flow to pass through the second ventilation opening, the third ventilation opening, the first gap, the second gap, the heat dissipation channel and the first ventilation opening to enter and exit in the shell so as to dissipate heat of the first battery module and the second battery module.
  2. 2. The battery pack according to claim 1, wherein a ventilation heat-conducting plate is provided in the first gap, the ventilation heat-conducting plate including opposite first and second attaching walls, the first and second attaching walls being attached to opposite outer side walls between adjacent two of the first battery cells, respectively; the ventilation heat-conducting plate further comprises a plurality of heat dissipation teeth formed between the first attaching wall and the second attaching wall; The first attaching wall and the second attaching wall are used for absorbing heat of the first battery unit and transmitting the heat to the heat dissipation teeth; The heat dissipation teeth are arranged at intervals, so that heat exchange channels communicated between the second ventilation openings and the heat dissipation channels are formed among the heat dissipation teeth, and the fan is used for driving air flow to pass through the heat exchange channels and absorbing heat on the first bonding wall, the second bonding wall and the heat dissipation teeth.
  3. 3. The battery pack according to claim 1, wherein in the first direction, a wind scooper is provided at a position between the first vent and the first and second battery modules, the wind scooper being configured to guide the airflow in the heat dissipation channel.
  4. 4. The battery pack of claim 3, wherein the fan is an exhaust fan; the end, communicated with the heat dissipation channel, of the air guide cover is an inlet, and the end, communicated with the first ventilation opening, of the air guide cover is an outlet; the cross-sectional area of the inlet is smaller than the cross-sectional area of the outlet; The fan drives external air flow to enter the shell from the second air vent and the second air vent, enter the heat dissipation channel through the first gap and the second gap, and then flow through the expansion section to reduce the flow speed and then be discharged from the first air vent.
  5. 5. The battery pack of claim 4, wherein a cross-sectional area of the inlet is smaller than a cross-sectional area of the heat dissipation channel.
  6. 6. The battery pack of claim 4, wherein the air guide cover is formed by splicing a plurality of plate bodies.
  7. 7. The battery pack according to claim 3, wherein a first air guide plate is connected between the top of the first battery module and the top of the second battery module, the top of the air guide cover is connected with the first air guide plate, and the air guide cover is matched with the first air guide plate to guide the air flow in the heat dissipation channel.
  8. 8. The battery pack according to claim 7, wherein in the first direction, a second air guide plate is arranged at a position between the inner wall of the side, facing away from the first ventilation opening, of the housing and the first battery module and the second battery module, the top of the second air guide plate is connected with the first air guide plate, and the air guide cover, the first air guide plate and the second air guide plate cooperate together to guide the air flow in the heat dissipation channel.
  9. 9. The battery pack according to any one of claims 1 to 8, wherein the second vent is in a strip shape extending in a third direction, the third direction being perpendicular to both the first direction and the second direction; along the third direction, the first vent is adapted to the size of the first gap.
  10. 10. A powered device comprising a battery pack according to any one of claims 1-9.

Description

Battery pack and electric equipment Technical Field The application relates to the technical field of heat dissipation of power batteries, in particular to a battery pack and electric equipment. Background With the development and increasing popularity of new energy sources, higher and higher requirements are also put on the performance of power batteries. The power battery is generally composed of one or more battery packs, each battery pack comprises one or more battery modules, and each battery module is formed by connecting a plurality of battery cells in series or in parallel. The heat dissipation capacity of the battery packs directly affects the working performance, and as each battery pack contains a great number of battery cells, the heat dissipation capacity and the heat dissipation balance of the battery packs clearly put higher requirements, and the heat dissipation capacity and the heat dissipation balance of the existing battery packs are relatively poor. Disclosure of utility model In view of the above problems, embodiments of the present application provide a battery pack and an electric device, which can improve heat dissipation capability of the battery pack and heat dissipation balance among battery monomers. According to one aspect of the embodiment of the application, a battery pack is provided, which comprises a shell, a first battery module, a second battery module and a fan, wherein a first ventilation opening is formed in the middle position of one side of the shell along a first direction, a plurality of second ventilation openings and a plurality of third ventilation openings are formed in the two sides of the shell along a second direction respectively, the first battery module and the second battery module are arranged in the shell and are electrically connected with each other, the first battery module is positioned between the first ventilation opening and the second ventilation opening along the second direction, the second battery module is positioned between the first ventilation opening and the third ventilation opening along the second direction, the first battery module comprises a plurality of first battery cells which are arranged along the first direction, the first battery cells are electrically connected with each other, a first gap is formed between two adjacent first battery cells and are correspondingly communicated with the second ventilation opening, the second battery module comprises a plurality of second battery cells which are arranged along the first direction, the second battery cells are electrically connected with each other, the second battery cells are correspondingly arranged between the first battery cells and the second battery module and the second ventilation opening, the second battery module is correspondingly arranged in the first ventilation opening and the first ventilation opening, the first ventilation opening is correspondingly communicated with the second ventilation opening, the first battery module is arranged in the first ventilation opening and the first ventilation opening, the first ventilation opening is correspondingly arranged in the first ventilation opening, the first ventilation opening is formed in the first ventilation opening, the first ventilation opening is correspondingly to the first ventilation opening, the first ventilation opening is correspondingly arranged between the first battery module and the first ventilation opening is correspondingly, and the first ventilation opening is correspondingly arranged in the first ventilation opening. In an alternative mode, a ventilation heat-conducting plate is arranged in the first gap and comprises a first attaching wall and a second attaching wall which are opposite to each other, the first attaching wall and the second attaching wall are attached to opposite outer side walls between two adjacent first battery cells respectively, the ventilation heat-conducting plate further comprises a plurality of heat dissipation teeth formed between the first attaching wall and the second attaching wall, the first attaching wall and the second attaching wall are used for absorbing heat of the first battery cells and transmitting the heat to the heat dissipation teeth, the plurality of heat dissipation teeth are arranged at intervals, so that a heat exchange channel communicated between the second ventilation opening and the heat dissipation channel is formed between the plurality of heat dissipation teeth, and a fan is used for driving airflow to pass through the heat exchange channel and absorbing heat on the first attaching wall, the second attaching wall and the heat dissipation teeth. In an alternative mode, in the first direction, a wind scooper is arranged at a position between the first ventilation opening and the first battery module and between the first ventilation opening and the second battery module, and the wind scooper is used for guiding the air flow in the heat dissipati