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CN-122000533-A - Battery pack and electric equipment

CN122000533ACN 122000533 ACN122000533 ACN 122000533ACN-122000533-A

Abstract

The application discloses a battery pack and electric equipment, wherein the battery pack comprises a box body, a plurality of battery modules and a plurality of air cooling assemblies, and an accommodating cavity is arranged in the box body; the air cooling assemblies are arranged in the accommodating cavity, and at least two air cooling assemblies are arranged corresponding to different battery modules. Because at least two forced air cooling subassemblies are corresponding with different battery modules, consequently make at least partial battery modules can correspond different forced air cooling subassemblies to avoid an forced air cooling subassembly to dispel the heat to a plurality of battery modules, lead to the unable even radiating problem of a plurality of battery modules that realizes, with the difference in temperature between reducing each battery module, guarantee the radiating effect.

Inventors

  • LI ZIMING
  • LU WEIJUN
  • ZHANG QIANG
  • XIAO DONGMING
  • XIAO XIONG
  • GONG MUHONG

Assignees

  • 武汉亿纬储能有限公司

Dates

Publication Date
20260508
Application Date
20251218

Claims (20)

  1. 1. A battery pack, comprising: the box body (11), the said box body (11) has holding cavity (111); A plurality of battery modules (12), a plurality of battery modules (12) arranged in the accommodating cavity (111), and The air cooling assemblies (13) are arranged in the accommodating cavity (111), and at least two air cooling assemblies (13) are arranged corresponding to different battery modules (12).
  2. 2. The battery pack according to claim 1, wherein the battery module (12) includes a plurality of cells (121) and a plurality of the cells (121) are arranged at intervals along the first direction, and distances formed between at least part of adjacent cells (121) are unequal.
  3. 3. The battery pack according to claim 2, wherein the air cooling assembly (13) comprises: a fan (131), the fan (131) is arranged opposite to the battery module (12), and The air guide piece (132), air guide piece (132) with fan (131) intercommunication, at least part air guide piece (132) set up same between two adjacent electric core (121) of battery module (12) to be used for guiding the wind of fan (131) output to between two adjacent electric core (121).
  4. 4. A battery pack according to claim 3, wherein the spacing between adjacent two of the cells (121) has a tendency to gradually increase in a direction away from the blower (131).
  5. 5. A battery pack according to claim 3, wherein the air guide (132) comprises: a main air guide (133), the main air guide (133) being in communication with the fan (131), and The secondary air guide devices (134) are communicated with the main air guide device (133), the secondary air guide devices (134) are arranged on the main air guide device (133) at intervals along the first direction, and one secondary air guide device (134) is arranged between the box body (11) and the battery cells (121) or between two adjacent battery cells (121).
  6. 6. The battery pack of claim 5, wherein at least some of the secondary air guides (134) have different thicknesses.
  7. 7. The battery pack according to claim 5, wherein an air supply gap (14) is provided between the secondary air guide (134) and at least one of the cells (121).
  8. 8. The battery pack according to any one of claims 5-7, wherein a first air supply cavity is formed in the secondary air guide member (134), a plurality of air supply holes (135) are formed in the surface of the secondary air guide member (134), the air supply holes (135) are opposite to the battery cells (121), and the air supply holes (135) are communicated with the first air supply cavity.
  9. 9. The battery pack of claim 8, wherein the secondary air guide (134) comprises: A first air deflector (136), wherein the first air deflector (136) is arranged between the box body (11) and the battery cell (121), the air supply hole (135) is arranged on one side surface of the first air deflector (136) facing the battery cell (121) along the first direction, and The second air deflectors (137), the second air deflectors (137) are arranged between two adjacent electric cores (121), and the side faces of the second air deflectors (137) facing the electric cores (121) are provided with air supply holes (135) along the first direction.
  10. 10. The battery pack according to claim 9, wherein the air supply hole (135) includes a first air supply hole (1351) and a second air supply hole (1352), the first air supply hole (1351) is located at a side of the second air supply hole (1352) away from the main air guide (133), and an air supply area of the second air supply hole (1352) is smaller than an air supply area of the first air supply hole (1351).
  11. 11. The battery pack according to claim 10, wherein a ratio of a supply area of the second supply hole (1352) to a supply area of the first supply hole (1351) is greater than or equal to 0.93 and less than or equal to 0.97.
  12. 12. The battery pack according to any one of claims 10 or 11, wherein the first air-sending holes (1351) and the second air-sending holes (1352) are each provided in plurality, and a distance between two adjacent first air-sending holes (1351) is larger than a distance between two adjacent second air-sending holes (1352).
  13. 13. The battery pack according to any one of claims 9-12, wherein the first air deflector (136) comprises a first sub air deflector (1361) and a second sub air deflector (1362), the first sub air deflector (1361) is positioned at a side of the main air deflector (133) close to the fan (131), an air supply area of the first sub air deflector (1361) is smaller than an air supply area of the second sub air deflector (1362), and/or, The second air deflector (137) comprises a third sub air deflector (1371) and a fourth sub air deflector (1372), the third sub air deflector (1371) is located on one side, close to the fan (131), of the main air deflector (133), and the air supply area of the third sub air deflector (1371) is smaller than that of the fourth sub air deflector (1372).
  14. 14. The battery pack according to any one of claims 8-13, wherein the air cooling assembly (13) further comprises a guiding portion (138), the guiding portion (138) being disposed between the fan (131) and the air guiding member (132), the guiding portion (138) being configured to guide the air output from the fan (131) to the air guiding member (132).
  15. 15. The battery pack according to claim 14, wherein the guide portion (138) is provided with a second air supply cavity and an opening (1381) communicating with the second air supply cavity, an air outlet of the fan (131) faces the opening (1381), the main air guide (133) is provided with a third air supply cavity, and the second air supply cavity communicates with the first air supply cavity through the third air supply cavity.
  16. 16. The battery pack according to any one of claims 1 to 15, wherein the case (11) includes: a housing (112), said housing (112) comprising said receiving cavity (111), and And the cover body (113), wherein the cover body (113) is covered on the shell (112).
  17. 17. The battery pack according to claim 16, wherein the cover (113) includes a top surface remote from the housing (112), the top surface having a plurality of first air outlets (1131) disposed thereon.
  18. 18. The battery pack according to claim 17, wherein the peripheral side surface of the cover (113) includes a first side and other sides, the fan (131) of the air cooling assembly (13) being disposed adjacent to the first side, at least one of the other sides being provided with a second air outlet (1132).
  19. 19. The battery pack according to any one of claims 16-18, wherein the housing (112) comprises: a plurality of mounting ports (114), the mounting ports (114) being in communication with the air cooling assembly (13), and The filter component (115) is connected to the mounting port (114), a plurality of air inlet holes are formed in the filter component (115), and the air inlet holes are communicated with the air cooling assembly (13).
  20. 20. The battery pack according to any one of claims 16-19, wherein the battery module (12) includes a plurality of cells (121), and the housing (112) includes: A plurality of first mounting recesses (1221), the first mounting recesses (1221) protruding toward a side facing away from the cover (113), the first mounting recesses (1221) for receiving the battery cells (121), and A plurality of second mounting recesses (1222), the second mounting recesses (1222) protruding towards a side facing away from the cover (113), the second mounting recesses (1222) for receiving the air cooling assembly (13).

Description

Battery pack and electric equipment Technical Field The application relates to the technical field of electronics, in particular to a battery pack and electric equipment. Background In the existing battery pack, a common thermal management system is air cooling or liquid cooling, and the air quantity of the air cooling battery pack in the related technology is difficult to uniformly distribute in the battery module, so that the heat dissipation efficiency of the whole battery pack is low, and the uniform temperature control of the battery core is difficult to realize. Disclosure of Invention The embodiment of the application provides a battery pack and electric equipment so as to at least partially solve the technical problems. Next, the technical scheme of the embodiment of the application is integrally described with reference to the battery pack. The battery pack can be applied to electric equipment. The electric equipment can be vehicles, mobile phones, portable equipment, notebook computers, ships, spacecrafts, electric toys, electric tools and the like. Spacecraft include airplanes, rockets, space planes, spacecraft, and the like, electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric aircraft toys, and the like, and electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, electric planers, and the like. The embodiment of the application does not limit the electric equipment in particular. For convenience of explanation, the following embodiments take electric equipment as an example of a vehicle. The vehicle may be a pure electric vehicle, a hybrid electric vehicle, an extended range vehicle, or the like, which is not limited in the embodiment of the present application. The vehicle is provided with a battery pack inside. For example, the battery pack may be disposed at the bottom or the head or the tail of the vehicle, which is not limited by the embodiment of the present application. In order to achieve the above object, according to a first aspect of the present application, there is provided a battery pack including a case, a plurality of battery modules, and a plurality of air-cooling assemblies, wherein a receiving chamber is provided in the case, the plurality of battery modules are disposed in the receiving chamber, and the air-cooling assemblies are disposed in the receiving chamber, and at least two of the air-cooling assemblies are disposed corresponding to different battery modules. In the battery pack provided by the embodiment of the application, at least two air cooling assemblies correspond to different battery modules, so that at least part of the battery modules can correspond to different air cooling assemblies, the problem that one air cooling assembly dissipates heat to a plurality of battery modules, so that uniform heat dissipation of the plurality of battery modules cannot be realized is solved, the temperature difference between each battery module is reduced, and the heat dissipation effect is ensured. It should be further noted that in this embodiment, the number of the battery modules and the air cooling assemblies is the same, that is, one air cooling assembly can independently realize heat dissipation of one battery module, so that heat dissipation between each battery module is more uniform, and the heat dissipation effect is good. However, the design is not limited thereto, and in other embodiments, two battery modules may correspond to one air cooling assembly, and only the wind power of the air cooling assembly needs to be ensured to be enough to dissipate heat of the two battery modules. In some embodiments, the battery module includes a plurality of battery cells, and the plurality of battery cells are arranged at intervals along the first direction, and at least part of adjacent two battery cells have different distances. It can be appreciated that, when implementing in particular, the interval between the electric core can be according to the distance of the air-out end of forced air cooling subassembly to set up specifically, and the interval between the electric core of keeping away from the air-out end sets up to great, and the distance between the electric core that is close to the air-out end sets up to less, consequently can avoid leading to the inhomogeneous problem of cooling because of the interval between electric core and the air-out end, the cooling effect of the battery package of assurance. In some embodiments, the air cooling assembly comprises a fan and an air guide piece, wherein the fan and the battery module are oppositely arranged, the air guide piece is communicated with the fan, and at least part of the air guide piece is arranged between two adjacent electric