WO2023035937A1 - 散热箱、电池组系统及用电设备 - Google Patents

散热箱、电池组系统及用电设备 Download PDF

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Publication number
WO2023035937A1
WO2023035937A1 PCT/CN2022/114312 CN2022114312W WO2023035937A1 WO 2023035937 A1 WO2023035937 A1 WO 2023035937A1 CN 2022114312 W CN2022114312 W CN 2022114312W WO 2023035937 A1 WO2023035937 A1 WO 2023035937A1
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WO
WIPO (PCT)
Prior art keywords
battery pack
opening
heat dissipation
housing
casing
Prior art date
Application number
PCT/CN2022/114312
Other languages
English (en)
French (fr)
Inventor
彭芳桂
胡成东
朱宁
杨典
Original Assignee
东莞新能安科技有限公司
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Filing date
Publication date
Application filed by 东莞新能安科技有限公司 filed Critical 东莞新能安科技有限公司
Publication of WO2023035937A1 publication Critical patent/WO2023035937A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the technical field of battery heat dissipation, in particular to a heat dissipation box, a battery pack system and electrical equipment.
  • a drone needs to be equipped with more than one battery for rotation, which increases the operating cost of the user. If the replaced battery can be cooled quickly, the number of backup batteries can be reduced, thereby reducing operating costs. However, the battery will generate heat during charging, which may affect the use of the battery, so it is necessary to improve the heat dissipation of the battery pack.
  • An embodiment of the present application provides a heat dissipation box, including a first shell and a first structural member.
  • the first housing includes an air inlet and an air outlet oppositely arranged along a first direction.
  • the first structural component includes a first portion and a first opening disposed on the first portion. Along a third direction, a first opening runs through the first portion, and the first opening is used for at least partially putting the heat dissipation structure into the first housing, wherein the third direction is perpendicular to the first direction.
  • the first portion includes a first region, and along the second direction, the length of the first opening is smaller than the length of the first housing.
  • the first area is located between the first opening and the first housing, wherein the second direction is perpendicular to the first direction and the third direction.
  • the structure to be radiated is at least partially put into the first housing through the first opening, a part of the structure to be radiated passes through the first opening and is disposed in the first space, and the other part extends out of the first opening.
  • the heat dissipation box further includes a second casing, the second casing is arranged in the first casing, the first structural member is at least partly arranged between the first casing and the second casing, and the second The casing is provided with a second space, and the second space is used for accommodating at least part of the structural component to be dissipated.
  • the heat generated by the heat dissipation structure is transferred to the second housing and contacts the airflow through the second housing to realize heat exchange, which can reduce the risk of damage to the heat dissipation structure by impurities in the airflow and further protect the heat dissipation structure.
  • the second housing is further provided with a second opening communicating with the second space, and along the opposite direction of the third direction, the projection of the first opening is located in the area of the projection of the second opening Inside.
  • the first part can be interference-fitted with the structure to be radiated in the second space, which can improve the stability of the structure to be radiated in the heat dissipation box.
  • the first structural member further includes a second part and a third opening located in the second part, along the third direction, the second part is spaced from the first part, the third opening penetrates the second part, and the second The three openings are used for accommodating the structure to be dissipated and/or the second housing, and the second part is located between the first housing and the second housing, or the second part is located between the first housing and the structure to be dissipated.
  • the second part is connected to the outer surface of the structure to be radiated or the outer surface of the second casing, so as to limit the structure to be radiated or the second casing, and to provide the structure to be radiated or the second casing on the first casing. in the stability.
  • the first structural member further includes a third part, and the third part is connected between the first part and the second part along the third direction.
  • the first part and the second part are connected through the third part to improve the structural strength of the first structural member.
  • the third part can separate the first housing from the structure to be dissipated or the second housing to form two airflow passages, and the two airflow passages are arranged at intervals along the second direction to improve the heat dissipation of the structure to be dissipated.
  • cooling liquid is provided in the second housing.
  • the structural component to be radiated exchanges heat with the second casing through the cooling liquid, so as to improve heat exchange efficiency.
  • the coolant can penetrate into the heat dissipation structural member, reducing the risk of combustion or explosion of the heat dissipation structural member.
  • the first part includes a first recess disposed outside the first space, and the first recess is formed with a first groove.
  • Embodiments of the present application also provide a battery pack system, including the heat dissipation box in any one of the above embodiments.
  • the structure to be dissipated includes a battery pack, a part of the battery pack is disposed in the first space, and another part of the battery pack extends out of the first space.
  • the battery pack includes oppositely disposed first and second sides.
  • a first passage and a second passage are formed between the battery pack and the first casing, the first passage is arranged between the first casing and the first side, and the second passage is arranged between the first casing and the second side.
  • the first channel communicates with the air inlet and the air outlet, and the second channel communicates with the air inlet and the air outlet.
  • the air inlet is connected to the fan and other equipment, and the airflow generated by the fan and other equipment enters the first casing from the air inlet and is divided into the first channel and the second channel.
  • the cooling effect of the battery pack in the cooling box is connected to the fan and other equipment, and the airflow generated by the fan and other equipment enters the first casing from the air inlet and is divided into the first channel and the second channel.
  • the projection of the battery pack at least partially overlaps with the projection of the first portion.
  • a part of the battery pack passes through the first opening and is arranged in the first space, and another part of the battery pack extends out of the first opening, so as to improve the stability of the battery pack in the heat dissipation box.
  • the first part includes a first concave portion disposed outside the first space, the first concave portion is formed with a first groove, the battery pack includes a conductive connection portion, and the first groove is used for accommodating the conductive connection portion Connected external charging unit.
  • the external charging part is housed in the first recess, the battery pack can be cooled while being charged, and the temperature of the battery pack can be controlled during charging.
  • the first concave portion limits the position of the external charging unit to improve the stability of the connection between the external charging unit and the battery pack.
  • the heat dissipation box further includes a third casing, the third casing covers the opening of the first casing, and the third casing is provided with a fourth opening communicating with the first groove.
  • the third casing cover can be used to protect the battery pack in the first casing, reducing the risk of damage to the battery pack.
  • the third casing can also be used to seal the battery pack in the first casing when the battery pack is thermally out of control, so as to improve the safety of the battery pack.
  • the cable of the external charging part passes through the fourth opening, so that the third casing can still continue to charge the battery pack through the external charging part when the third casing is covered with the opening of the first casing, so as to reduce the accidental contact of the battery pack during charging. risks of.
  • the battery pack includes a plurality of battery cells stacked along a first direction.
  • the cell includes an electrode assembly, a cell casing, and electrode terminals connected to the electrode assembly and drawn out from the cell casing.
  • the battery case includes a third part for accommodating the electrode assembly and a fourth part extending outward from the third part, and the third part is located in the first space.
  • the third part is located in the first space, so that the airflow passes around the outside of the electrode assembly to improve the heat dissipation efficiency of the electrode assembly.
  • the fourth part extends outwards so that the electrode terminals are connected to the first circuit board in the battery pack.
  • Embodiments of the present application also provide an electric device, including the battery pack system in any one of the above embodiments.
  • the structural component to be radiated is put into the first housing through the first opening, and a part of the structural component to be radiated passes through the first opening and is arranged in the first housing. In the space, another part extends out of the first opening.
  • Connect the air inlet to fans and other equipment, and the airflow generated by the fan and other equipment enters the first housing from the air inlet, and the airflow passes around the surrounding side of the heat dissipation structure to cool the heat dissipation structure and improve the heat dissipation in the heat dissipation box.
  • the heat dissipation effect of structural parts is put into the first housing through the first opening, and a part of the structural component to be radiated passes through the first opening and is arranged in the first housing. In the space, another part extends out of the first opening.
  • Fig. 1 is a structural schematic diagram of the assembly of a heat dissipation box and a structural member to be radiated in one embodiment of the present application.
  • Fig. 2 is a schematic diagram of the disassembled structure of the heat dissipation box and the structure to be radiated in one embodiment of the present application.
  • Fig. 3 is a schematic diagram of a disassembled structure of a heat dissipation box and a structure to be radiated in another embodiment of the present application.
  • Fig. 4 is a schematic cross-sectional structure diagram of a heat dissipation box and a structure to be radiated in an embodiment of the present application.
  • FIG. 5 is an enlarged structural schematic diagram of FIG. 4 .
  • Fig. 6 is a schematic structural view of the first structural member in the heat dissipation box in an embodiment of the present application.
  • Fig. 7 is a schematic structural view of the first housing in the heat dissipation box in an embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a battery pack system in an embodiment of the present application.
  • Fig. 9 is a schematic structural diagram of the first channel and the second channel in the battery pack system according to an embodiment of the present application.
  • Fig. 10 is a schematic structural diagram of an open state of the third housing in the battery pack system in one embodiment of the present application.
  • Fig. 11 is a schematic structural diagram of the sealed state of the third casing in the battery pack system in one embodiment of the present application.
  • Fig. 12 is a schematic structural diagram of a battery pack in a battery pack system according to an embodiment of the present application.
  • Fig. 13 is a schematic structural view of the cells in the battery pack in an embodiment of the present application.
  • Fig. 14 is a schematic cross-sectional structure diagram of a battery pack system in an embodiment of the present application.
  • Fig. 15 is a schematic structural diagram of an external charging part in an embodiment of the present application.
  • Fig. 16 is a schematic structural diagram of an electrical device in an embodiment of the present application.
  • the first channel 15 is the first channel 15
  • the first structural member 20 is The first structural member 20
  • Second bottom wall 301 Second bottom wall 301
  • the third shell 40 is the third shell 40
  • the first detection unit 51 The first detection unit 51
  • the second detection unit 52 The second detection unit 52
  • the first circuit board 97 The first circuit board 97
  • the embodiment of the present application provides a heat dissipation box 100 for placing at least part of the structural component 90 to be radiated and cooling down the structural component 90 by heat dissipation.
  • the heat dissipation box 100 includes a first shell 10 and a first structural member 20 .
  • the first casing 10 includes a first space 11
  • the first casing 10 includes an air inlet 12 and an air outlet 13 oppositely disposed along a first direction X, and the air inlet 12 and the air outlet 13 communicate with the first space 11 .
  • the first structure 20 includes a first portion 21 and a first opening 211 disposed on the first portion 21 .
  • the first opening 211 passes through the first part 21 and communicates with the first space 11, and the first opening 211 is used to at least partially put the structural member 90 to be radiated into the first space 11, wherein the third direction Z perpendicular to the first direction X.
  • the first part 21 includes a first area 212.
  • the length of the first opening 211 is smaller than the length of the first housing 10, the first area 212 is located between the first opening 211 and the first housing 10, and the second
  • the direction Y is perpendicular to the first direction X and the third direction Z, and the second direction Y is perpendicular to the plane where the first direction X and the third direction Z are located.
  • the first part 21 includes a fourth area 217 .
  • the length of the first opening 211 is smaller than the length of the first casing 10
  • the fourth region 217 is located between the first opening 211 and the first casing 10 .
  • the structure to be dissipated 90 includes a first surface 901 and a second surface 902 opposite to each other, and a third surface 903 and a fourth surface 904 opposite to each other along the first direction X.
  • the third surface 903 faces the air inlet 12
  • the fourth surface 904 faces the air outlet 13 .
  • the distance between the first surface 901 and the second surface 902 is less than or equal to the length of the first opening 211, and an air flow is provided between the first surface 901 and the second surface 902 and the first casing 10 respectively.
  • aisle The air enters the first casing 10 from the air inlet 12 , passes through the third surface 903 and then diverts to the air passages corresponding to the first surface 901 and the second surface 902 , and finally the air passes through the fourth surface 904 and is discharged through the air outlet 13 .
  • the airflow passes around the peripheral side of the structure to be radiated 90 to perform surrounding cooling on the structure to be radiated 90 .
  • the distance between the third surface 903 and the fourth surface 904 is less than or equal to the length of the first opening 211 .
  • a part of the structure to be dissipated 90 passes through the first opening 211 and is disposed in the first space 11 , and another part extends out of the first opening 211 , which can improve the stability of the structure to be dissipated 90 in the heat dissipation box 100 .
  • the part of the structure to be dissipated 90 that extends out of the first opening 211 is connected to the first area 212, reducing the gap between the structure to be dissipated 90 and the first area 212, and restricting the flow of air from the structure to be dissipated.
  • the gap between the component 90 and the first region 212 flows out, improving the heat dissipation effect of the heat dissipation structural component 90 in the heat dissipation box 100 .
  • the part of the heat dissipation structure 90 extending out of the first opening 211 is in contact with the first region 212 .
  • the part of the structure to be dissipated 90 housed in the first casing 10 may be a part where the structure to be dissipated 90 is likely to generate heat, for example, when the structure to be dissipated 90 includes a battery pack, the battery pack Corresponding to the part of the battery core.
  • the structure to be radiated 90 is put into the first housing 10 through the first opening 211, and a part of the structure to be radiated 90 passes through the first opening 211 and is arranged on the In the first space 11 , another part extends out of the first opening 211 .
  • the airflow passes around the surrounding side of the structure to be dissipated 90 , so as to surround and cool the structure to be dissipated 90 , and improve the heat dissipation effect of the structure to be dissipated 90 in the heat dissipation box 100 .
  • the first housing 10 includes a first bottom wall 101 and a plurality of first side walls 102, and the plurality of first side walls 102 are connected to the first bottom wall 101, and the first bottom wall 101 and a plurality of first side walls 102 enclose the first space 11 , and the side of the plurality of first side walls 102 away from the first bottom wall 101 forms an opening of the first space 11 .
  • the opening of the first space 11 is used to place the first structural member 20 at least partially into the first space 11 .
  • the air inlet 12 and the air outlet 13 pass through the first side wall 102 to communicate with the first space 11 .
  • the number of first side walls 102 is four.
  • the heat dissipation box 100 further includes a second shell 30 .
  • the second housing 30 is disposed in the first housing 10 , and the first structural member 20 is at least partially disposed between the first housing 10 and the second housing 30 .
  • the second housing 30 is provided with a second space 31 and a second opening 311 .
  • the second opening 311 communicates with the second space 31 , and the second opening 311 is used for putting the structural component 90 to be dissipated into the second space 31 .
  • the second space 31 is used to accommodate at least part of the heat dissipation structural member 90.
  • the heat generated by the heat dissipation structural member 90 is transferred to the second housing 30 and is in contact with the airflow through the second housing 30 to realize heat exchange, which can reduce the heat transfer in the airflow.
  • the risk of damage to the structural component 90 to be dissipated by impurities caused by impurities can further protect the structural component 90 to be dissipated.
  • the second housing 30 includes a second bottom wall 301 and a plurality of second side walls 302, the plurality of second side walls 302 are connected to the second bottom wall 301, the second bottom wall 301 is connected to the plurality of second The second space 31 is enclosed by the side walls 302 , and a second opening 311 is formed on a side of the plurality of second side walls 302 away from the second bottom wall 301 .
  • the number of second side walls 302 is four.
  • a coolant (not shown) is provided in the second space 31, and part of the structure to be radiated 90 is immersed in the coolant, and the structure to be radiated 90 is exchanged with the second housing 30 through the coolant. heat to improve heat transfer efficiency.
  • the cooling liquid can penetrate into the heat dissipation structural member 90 , reducing the risk of burning or explosion of the heat dissipation structural member 90 .
  • the coolant includes water.
  • part of the outer circumference of the heat dissipation structure 90 is covered with a heat conduction film (not shown), the heat conduction film can be in contact with the inner surface of the second housing 30, and the heat dissipation structure 90 is connected to the second housing through the heat conduction film. 30 for heat exchange to improve heat exchange efficiency.
  • the projection of the first opening 211 is located within the projection area of the second opening 311 .
  • the second housing 30 is located on a side of the first part 21 away from the first area 212 , and the edge of the first part 21 close to the first opening 211 extends into the second space 31 .
  • the structure to be radiated 90 forms a gap 32 with the second housing 30 , and cooling liquid can be provided in the gap 32 , and the structural component 90 to be radiated exchanges heat with the second housing 30 through the cooling liquid, so as to improve heat exchange efficiency.
  • gap 32 ranges from 5 mm to 20 mm. Specifically, the gap 32 is located between the first surface 901 , the second surface 902 , the third surface 903 and the fourth surface 904 and the corresponding second side walls 302 respectively.
  • first direction X the distance between the first surface 901 and the second surface 902 and the corresponding second side wall 302 ranges from 5 mm to 20 mm; along the second direction Y, the third surface 903 and the fourth surface 904 correspond to The distance between the second sidewalls 302 ranges from 5mm to 20mm.
  • the first part 21 is also used for interference fit with the structure to be dissipated 90 placed in the second space 31 , so as to improve the stability of the structure to be dissipated 90 in the heat dissipation box 100 .
  • the side of the first part 21 facing the first opening 211 is provided with a first inclined surface 212a inclined relative to the plane, and the first inclined surface 212a faces the first The housing 10 extends internally.
  • the first inclined surface 212a gradually reduces the range of the first opening 211 to guide the heat dissipation structure 90 so that the heat dissipation structure 90 extends into the first shell through the first opening 211 body 10.
  • a first groove 213 is formed on a side of the first portion 21 away from the first area 212 , and an edge of the second housing 30 is disposed in the first groove 213 .
  • the first part 21 also includes a third region 214 located between the first opening 211 and the first groove 213.
  • the third area 214 is connected to the outer periphery of the structure to be radiated 90 to close the heat in the second space 31. Coolant or heat conduction film to improve the stability of heat dissipation.
  • the first structural member 20 further includes a second portion 22 and a third opening 221 located in the second portion 22 .
  • the second part 22 is spaced apart from the first part 21 , and the third opening 221 penetrates through the second part 22 .
  • the third opening 221 is used for accommodating the structure to be dissipated 90 and/or the second housing 30, the second part 22 is located between the first housing 10 and the second housing 30, or the second part 22 is located in the first housing 10 and the structure to be dissipated 90.
  • the second part 22 is connected to the outer surface of the heat dissipation structure 90, the second part 22 includes a second area 222, and the second area 222 is limited to the heat dissipation structure 90 to improve the heat dissipation structure 90. Stability in the first housing 10 .
  • the second region 222 is located between the second opening 311 and the structural member 90 to be dissipated.
  • the second region 222 is located between the second opening 311 and the structural member 90 to be dissipated.
  • the second portion 22 is connected to the outer surface of the second housing 30 .
  • the second portion 22 includes a second region 222 .
  • the second area 222 limits the position of the second housing 30 and improves the stability of the second housing 30 in the first housing 10 .
  • the second region 222 is located between the second opening 311 and the first casing 10 .
  • the second region 222 is located between the second opening 311 and the first casing 10 .
  • the first bottom wall 101 is connected to the second portion 22 to improve the stability of the connection between the first structural component 20 and the first housing 10 .
  • the first structural member 20 further includes a third portion 23, the third portion 23 is connected between the first portion 21 and the second portion 22, and the third portion 23 is close to the first side wall 102 settings.
  • the third part 23 can be used to connect the first part 21 and the second part 22 to improve the structural strength of the first structural member 20 .
  • the third part 23 can also separate the first housing 10 and the heat-dissipated structural member 90 to form two airflow passages, and the two airflow passages are arranged at intervals along the second direction Y to improve heat dissipation to the first surface 901 .
  • the third portion 23 is in contact with the first side wall 102 .
  • the first structural member 20 further includes two third portions 23 oppositely disposed along the first direction X. As shown in FIG. Each third part 23 is connected between the first part 21 and the second part 22 , and the two third parts 23 can be used to connect the first part 21 and the second part 22 , so as to improve the structural strength of the first structural member 20 .
  • the second casing 30 is arranged in the first casing 10, and when part of the heat dissipation structure 90 is accommodated in the second casing 30, the third part 23 connects the first casing 10 and the second casing
  • the bodies 30 are separated to form two airflow passages, and the two airflow passages are arranged at intervals along the second direction Y to improve the heat dissipation of the second housing 30 .
  • the third portion 23 is in contact with the first side wall 102 .
  • the first portion 21 further includes a first recess 215 disposed outside the first space 11 .
  • the structure to be dissipated 90 includes a battery pack 90a, and the battery pack 90a includes a conductive connection portion.
  • the first concave portion 215 can be used for accommodating the external charging portion 81 (refer to FIG. 15 ) connected to the conductive connection portion, and the external charging portion 81 is used for charging the battery pack 90a.
  • the first recess 215 is formed with a first groove 216 .
  • the first groove 216 is used for the cable 83 of the external charging part 81 to pass through.
  • the air inlet 12 includes two air inlet holes 121 spaced apart on the first side wall 102 , and each air inlet hole 121 communicates with an airflow channel.
  • the air inlet holes 121 are used to connect with fans and other equipment, so as to respectively introduce airflow into the corresponding airflow channels, and make the airflow flow through the first surface 901 and the second surface 902 for cooling.
  • the projection of the third portion 23 close to the first side wall 102 is located between the projections of the two air inlet holes 121 , which is beneficial to improve the uniform heat dissipation of the structural member 90 to be dissipated.
  • the first housing 10 further includes an air guiding portion 122 disposed on the first side wall 102 , the air guiding portion 122 is disposed around the circumference of the air inlet hole 121 and extends outward along the first direction X, It can be used for sealing connection with the air outlet ports of fans and other equipment, so as to improve the stability of the airflow entering the air inlet 12.
  • the first housing 10 is made of flame-retardant materials, such as metal materials.
  • the first structural member 20 is made of flame retardant material, such as a flame retardant foam material, so as to reduce the risk of thermal runaway of the heat dissipation structural member 90 while reducing the weight of the heat dissipation box 100 .
  • the first structural member 20 has elasticity, which facilitates the interference fit between the first structural member and the structural member 90 to be dissipated.
  • the first structural member 20 has elasticity, which facilitates the interference fit between the first structural member and the second housing 30 .
  • the second housing 30 is made of aluminum alloy to improve the structural strength of the second housing 30 and reduce the weight of the second housing 30 .
  • the aluminum alloy material can also improve the thermal conductivity and corrosion resistance of the second housing 30 .
  • Embodiments of the present application provide a battery pack system 200, including any heat dissipation box 100 in the above-mentioned embodiments, and the structural member 90 to be dissipated includes a battery pack 90a.
  • a part of the battery pack 90a is disposed in the first space 11, and another part of the battery pack 90a extends out of the first space 11.
  • the battery pack 90a includes a first side 91 and a second side 92 disposed opposite to each other.
  • a first channel 15 and a second channel 16 are provided between the battery pack 90 a and the first casing 10 .
  • the first passage 15 is disposed between the first housing 10 and the first side 91
  • the second passage 16 is disposed between the second side 92 of the first housing 10 .
  • the first channel 15 communicates with the air inlet 12 and the air outlet 13
  • the second channel 16 communicates with the air inlet 12 and the air outlet 13 .
  • the battery pack 90 a includes a third side 93 and a fourth side 94 oppositely disposed along the first direction X.
  • the third side 93 faces the air inlet 12
  • the fourth side 94 faces the air outlet 13 .
  • a third channel 17 and a fourth channel 18 are provided between the battery pack 90 a and the first casing 10 .
  • the third passage 17 is disposed between the first housing 10 and the fourth side 94
  • the fourth passage 18 is disposed between the first housing 10 and the third side 93 .
  • the battery pack 90a includes a plurality of battery cells 95 stacked along the first direction X, and the third side 93 faces the air inlet 12, so that the airflow first contacts the third side 93 to increase the heat dissipation area, thereby Improve cooling efficiency.
  • the fourth side 94 faces the air outlet 13 to increase the heat dissipation area, thereby increasing the heat exchange efficiency between the heat in the first housing 10 and the external environment.
  • the battery pack 90a is provided with a support 96 (see FIG. 14 ).
  • the supporting member 96 is connected to the first bottom wall 101 and can be used to support the battery pack 90a.
  • the third direction Z there is a gap between the battery pack 90a and the first bottom wall 101 to form a flow channel to dissipate heat from the bottom surface of the battery pack 90a, which is the surface of the battery pack 90a facing the first bottom wall 101 .
  • the battery pack 90a is put into the first housing 10 through the first opening 211, a part of the battery pack 90a passes through the first opening 211 and is arranged in the first space 11, and the battery pack 90a The other part extends out of the first opening 211 .
  • the air inlet 12 is connected to fans and other equipment, and the airflow generated by the fan and other equipment enters the first housing 10 from the air inlet 12, passes through the third side 93, then diverts to the first channel 15, and the second channel 16, and finally passes through the fourth side After 94, it is discharged through the air outlet 13.
  • the air flow surrounds the battery pack 90a to cool the battery pack 90a and improve the heat dissipation effect of the battery pack 90a in the cooling box 100 .
  • the heat dissipation box 100 further includes a second shell 30 .
  • the second housing 30 is disposed in the first housing 10 , and the second space 31 is used for accommodating at least part of the battery pack 90a.
  • a first channel 15 and a second channel 16 are arranged at intervals between the second housing 30 and the first housing 10 to support the battery pack 90a in the second housing 30 Surround cooling.
  • the support member 96 is connected to the second bottom wall 301 and supports the battery pack 90a.
  • a gap is provided between the battery pack 90a and the second bottom wall 301 to form a flow channel to dissipate heat on the bottom surface of the battery pack 90a. .
  • the projection of the battery pack 90a at least partially overlaps with the projection of the first part 21, and a part of the battery pack 90a passes through the first opening 211 and is disposed in the first space 11. Another part of the battery pack 90a extends out of the first opening 211 to improve the stability of the battery pack 90a in the heat dissipation box 100 .
  • the first portion 21 further includes a first recess 215 disposed outside the first space 11 .
  • the battery pack 90a includes a conductive connection portion 99 (see FIG. 14 ), and along the third direction Z, the projection of the first concave portion 215 and the projection of the conductive connection portion 99 at least partially overlap.
  • the first recess 215 is used to accommodate the external charging part 81 (see FIG. 15 ) electrically connected to the conductive connection part 99, and the external charging part 81 is used to connect the external charging device 82 and charge the battery pack 90a.
  • the external charging unit 81 is housed in the first concave portion 215 , so that the battery pack 90 a is cooled while being charged, and the temperature of the battery pack 90 a is controlled during charging. Moreover, the first concave portion 215 limits the position of the external charging unit 81 to improve the stability of the connection between the external charging unit and the battery pack 90a.
  • the conductive connection part 99 includes a connector.
  • the heat dissipation box 100 further includes a third shell 40 .
  • the third casing 40 covers the opening of the first casing 10 and can be used to protect the battery pack 90 a in the first casing 10 and reduce the risk of damage to the battery pack 90 a.
  • the third housing 40 can also be used to seal the battery pack 90a in the first housing 10 when the battery pack 90a is thermally runaway, so as to improve the safety of the battery pack 90a.
  • the first recess 215 is provided with a first groove 216
  • the third housing 40 is provided with a fourth opening 41 communicating with the first groove 216 .
  • the cable 83 of the external charging part 81 passes through the fourth opening 41, so that the third casing 40 can still continue to charge the battery pack 90a through the external charging part 81 when the third casing 40 is covered with the opening of the first casing 10, reducing the battery life. Risk of accidental contact by personnel while group 90a is charging.
  • the battery pack 90a includes a plurality of battery cells 95 stacked along the first direction X. As shown in FIG.
  • the cell 95 includes an electrode assembly (not shown), a cell case 951 , and an electrode terminal 952 connected to the electrode assembly and drawn out from the cell case 951 .
  • the battery case 951 includes a third portion 951a for accommodating the electrode assembly and a fourth portion 951b extending outward from the third portion 951a.
  • the third part 951a is located in the first space 11 or the second space 31, so that the airflow passes around the outside of the electrode assembly to improve the heat dissipation efficiency of the electrode assembly.
  • the fourth portion 951b extends outwards so that the electrode terminal 952 is connected to the first circuit board 97 in the battery pack 90a.
  • the cell casing 951 includes an aluminum-plastic film, and the cell 95 includes a soft-pack cell.
  • the projection of the third part 951a is located in the projection range of the fourth channel 18, and along the direction opposite to the first direction X, the projection of the third part 951a is located in the projection of the third channel 17
  • the range can improve the heat dissipation of the battery cell 95.
  • the projection of the third part 951a is located in the projection range of the first channel 15, and along the direction opposite to the second direction Y, the projection of the third part 951a is located in the projection of the second channel 16.
  • the range can improve the heat dissipation of the battery cell 95.
  • the heat dissipation box 100 further includes a first detection unit 51 disposed in the first recess 215 .
  • the first detection unit 51 is electrically connected to the second circuit board 98 in the battery pack 90a, and the second circuit board 98 is provided with a control unit.
  • the first detection unit 51 is used to detect the temperature of the conductive connection portion 99 of the battery pack, and the control unit is used to obtain the temperature of the battery pack 90a.
  • the heat dissipation box 100 further includes a second detection unit 52 , and the second detection unit 52 is disposed on the first casing 10 or the second casing 30 .
  • the second detection unit 52 is also electrically connected to the second circuit board 98 in the battery pack 90a, and the second circuit board 98 is provided with a control unit.
  • the second detection unit 52 and the first detection unit 51 are used to jointly detect the temperature of the battery pack 90a, and the control unit is used to obtain the temperature of the battery pack 90a.
  • control unit includes a processor
  • the processor is communicatively connected with the first detection unit 51 or with the second detection unit 52
  • the external charging unit 81 is communicatively connected with equipment such as a fan.
  • the processor is used to perform the following steps:
  • the first temperature range includes a minimum temperature and a maximum temperature.
  • the processor controls the battery pack 90a to be connected to the external charging unit 81 for charging.
  • the processor controls the battery pack 90a to be connected to the external charging unit 81 for charging and starts a fan to cool the battery pack 90a.
  • the processor When the temperature of the battery pack 90a is higher than the maximum temperature, the processor first starts the fan to cool the battery pack 90a, until the temperature of the battery pack 90a is lower than the maximum temperature, controls the battery pack 90a and the external charging part 81 to connect and charge and start the fan As a result, the temperature of the battery pack 90a is lowered.
  • the battery pack 90a When the above-mentioned battery system 200 is applied to electrical equipment such as unmanned aerial vehicles, after a battery pack 90a is discharged in the electrical equipment, the battery pack 90a is removed and put into the cooling box 100, so that the replaced battery The group 90a is charged while performing heat dissipation and cooling. Compared with the existing method of waiting for the replacement of the battery pack 90a to cool down before charging, it can reduce the number of spare battery packs, and a drone only needs to be equipped with two batteries to achieve uninterrupted work requirements, thereby reducing operating costs. cost.
  • an embodiment of the present application provides an electric device 300 including any battery pack system 200 in the above-mentioned embodiments.
  • the structural member 90 to be dissipated is put into the first housing 10 through the first opening 211 to dissipate heat.
  • a part of the structural member 90 passes through the first opening 211 and is disposed in the first space 11 , and another part extends out of the first opening 211 and passes out of the first region 212 .
  • the air inlet 12 is connected to the air outlet equipment such as a fan, and the airflow generated by the air outlet equipment such as the fan flows through the airflow channel between the heat-dissipated structural member 90 and the first housing 10 and is discharged through the air outlet 13 .
  • the airflow passes around the surrounding side of the structure to be dissipated 90 , so as to surround and cool the structure to be dissipated 90 , and improve the heat dissipation effect of the structure to be dissipated 90 in the heat dissipation box 100 .

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

一种散热箱，包括第一壳体和第一结构件。第一壳体包括沿第一方向相对设置的进风口和出风口。第一结构件包括第一部分和设于第一部分的第一开口。沿第三方向，第一开口贯穿第一部分，第一开口用于将电池组放入第一壳体内。第一部分包括第一区域，其中，第三方向垂直于第一方向。沿第二方向，第一开口的长度小于第一壳体的长度。第一区域位于第一开口和第一壳体之间，其中，第二方向垂直于第一方向和第三方向。本申请还提供装载上述散热箱的电池组系统及用电设备。散热箱使气流环绕经过被散热结构件的周侧，以对被散热结构件进行环绕冷却，提升散热箱中被散热结构件的散热效果。

Description

散热箱、电池组系统及用电设备 技术领域
本申请涉及电池散热技术领域，特别涉及一种散热箱、电池组系统及用电设备。
背景技术
目前，为了使无人机等设备达到无间断工作的要求，一台无人机需要配备多个以上的电池进行轮换，增加了用户端的运营成本。如果能使替换下的电池快速降温，就可减少备用电池的数量，进而降低运营成本。但电池在充电过程中会发热，可能会影响电池的使用，因此有必要提高电池组散热。
发明内容
鉴于上述状况，有必要提供一种散热箱、电池组系统及用电设备，以提升电池组的散热效果。
本申请的实施例提供一种散热箱，包括第一壳体和第一结构件。第一壳体包括沿第一方向相对设置的进风口和出风口。第一结构件包括第一部分和设于第一部分的第一开口。沿第三方向，第一开口贯穿第一部分，第一开口用于将被散热结构件至少部分放入第一壳体内，其中，第三方向垂直于第一方向。第一部分包括第一区域，沿第二方向，第一开口的长度小于第一壳体的长度。第一区域位于第一开口和第一壳体之间，其中，第二方向垂直于第一方向和第三方向。
通过第一开口将被散热结构件至少部分放入第一壳体内，被散热结构件的一部分通过第一开口并设于第一空间内，另一部分延伸出第一开口外。将进风口连通风扇等设备，风扇等设备产生的气流自进风口进入第一壳体内，气流环绕经过被散热结构件的周侧，以对被散热结构件进行环绕冷却，提升散热箱中被散热结构件的散热效果。
本申请的一些实施例中，散热箱还包括第二壳体，第二壳体设于第一壳体内， 第一结构件至少部分设于第一壳体和第二壳体之间，第二壳体设有第二空间，第二空间用于容纳被散热结构件的至少部分。被散热结构件产生的热量传递至第二壳体并通过第二壳体与气流接触从而实现换热，可降低气流中的杂质对被散热结构件造成损伤的风险，进一步保护被散热结构件。
本申请的一些实施例中，沿第三方向，第二壳体还设有连通第二空间的第二开口，沿第三方向的反方向，第一开口的投影位于第二开口的投影的区域内。
第一部分可与放入第二空间内的被散热结构件过盈配合，可提高被散热结构件在散热箱中的稳定性。
本申请的一些实施例中，第一结构件还包括第二部分和位于第二部分的第三开口，沿第三方向，第二部分与第一部分间隔设置，第三开口贯穿第二部分，第三开口用于容纳被散热结构件和/或第二壳体，第二部分位于第一壳体和第二壳体之间，或第二部分位于第一壳体和被散热结构件之间。
第二部分连接于被散热结构件的外表面或第二壳体的外表面，以对被散热结构件或第二壳体限位，提被散热结构件或第二壳体在第一壳体中的稳定性。
本申请的一些实施例中，第一结构件还包括第三部分，沿第三方向，第三部分连接于第一部分和第二部分之间。
通过第三部分连接第一部分和第二部分，提高第一结构件的结构强度。第三部分可将第一壳体和被散热结构件或第二壳体之间分隔形成两个气流通道，两个气流通道沿第二方向间隔设置，提升对被散热结构件的散热。
本申请的一些实施例中，还包括：第二壳体内设有冷却液。被散热结构件通过冷却液与第二壳体进行换热，以提高换热效率。被散热结构件热失控导致电池组的外壳熔化或破损时，冷却液可渗入被散热结构件内部，降低被散热结构件燃烧或爆炸的风险。
本申请的一些实施例中，第一部分包括设于第一空间外的第一凹部，第一凹部形成有第一凹槽。
本申请的实施例还提供一种电池组系统，包括上述实施例中任一项的散热箱。被散热结构件包括电池组，电池组的一部分设于第一空间，电池组的另一部分延伸出第一空间。沿第二方向，电池组包括相对设置的第一侧面和第二侧面。电池组与 第一壳体之间形成第一通道和第二通道，第一通道设于第一壳体和第一侧面之间，第二通道设于第一壳体和第二侧面之间。第一通道连通进风口和出风口，第二通道连通进风口和出风口。
进风口连通风扇等设备，风扇等设备产生的气流自进风口进入第一壳体内并分流至第一通道和第二通道，气流环绕经过电池组的周侧，以对电池组进行环绕冷却，提升散热箱中电池组的散热效果。
本申请的一些实施例中，沿第三方向，电池组的投影与第一部分的投影至少部分重叠。
电池组的一部分通过第一开口并设于第一空间内，电池组的另一部分延伸出第一开口外，提高电池组在散热箱中的稳定性。
本申请的一些实施例中，第一部分包括设于第一空间外的第一凹部，第一凹部形成有第一凹槽，电池组包括导电连接部，第一凹槽用于容纳和导电连接部连接的外部充电部。
本申请的实施例包括的技术效果：通过第一凹部收容外部充电部，可使电池组在充电的同时进行散热冷却，控制电池组充电时的温度。并且第一凹部对外部充电部进行限位，提高外部充电部与电池组连接的稳定性。
本申请的一些实施例中，散热箱还包括第三壳体，第三壳体盖合于第一壳体的开口，第三壳体设有和第一凹槽连通的第四开口。
第三壳体盖可用于防护第一壳体内的电池组，降低电池组受损坏风险。第三壳体还可用于在电池组热失控时将电池组封闭于第一壳体内，提高电池组的安全性。外部充电部的线缆穿过第四开口，以使第三壳体在盖合于第一壳体的开口时仍能继续通过外部充电部给电池组充电，降低电池组在充电时人员误触的风险。
本申请的一些实施例中，电池组包括多个沿第一方向堆叠设置的电芯。电芯包括电极组件、电芯壳体、以及连接至电极组件并且从电芯壳体引出的电极端子。电芯壳体包括具有用于容纳电极组件的第三部分和从第三部分向外延伸的第四部分，第三部分位于第一空间内。
第三部分位于第一空间内，以使气流环绕经过电极组件外侧，提高电极组件的散热效率。第四部分向外延伸，以使电极端子连接于电池组中的第一电路板。
本申请的实施例还提供一种用电设备，包括上述实施例中任一项的电池组系统。
本申请的实施例提供的散热箱、电池组系统及用电设备中，通过第一开口将被散热结构件放入第一壳体内，被散热结构件的一部分通过第一开口并设于第一空间内，另一部分延伸出第一开口外。将进风口连通风扇等设备，风扇等设备产生的气流自进风口进入第一壳体内，气流环绕经过被散热结构件的周侧，以对被散热结构件进行环绕冷却，提升散热箱中被散热结构件的散热效果。
附图说明
图1是本申请的一个实施例中散热箱与被散热结构件装配的结构示意图。
图2是本申请的一个实施例中散热箱与被散热结构件的拆分结构示意图。
图3是本申请的另一个实施例中散热箱与被散热结构件的拆分结构示意图。
图4是本申请的一个实施例中散热箱与被散热结构件的剖面结构示意图。
图5是图4的放大结构示意图。
图6是本申请的一个实施例中散热箱中第一结构件的结构示意图。
图7是本申请的一个实施例中散热箱中第一壳体的结构示意图。
图8是本申请的一个实施例中电池组系统的结构示意图。
图9是本申请的一个实施例中电池组系统中第一通道和第二通道的结构示意图。
图10是本申请的一个实施例中电池组系统中第三壳体打开状态的结构示意图。
图11是本申请的一个实施例中电池组系统中第三壳体密封状态的结构示意图。
图12是本申请的一个实施例中电池组系统中电池组的结构示意图。
图13是本申请的一个实施例中电池组中电芯的结构示意图。
图14是本申请的一个实施例中电池组系统的剖面结构示意图。
图15是本申请的一个实施例中外部充电部的结构示意图。
图16是本申请的一个实施例中用电设备的结构示意图。
主要元件符号说明
散热箱                          100
电池组系统                      200
用电设备                        300
第一壳体                        10
第一底壁                        101
第一侧壁                        102
第一空间                        11
进风口                          12
进风孔                          121
导风部                          122
出风口                          13
第一通道                        15
第二通道                        16
第三通道                        17
第四通道                        18
第一结构件                      20
第一部分                        21
第一开口                        211
第一区域                        212
第一斜面                        212a
第一槽                          213
第三区域                        214
第一凹部                        215
第一凹槽                        216
第四区域                        217
第二部分                        22
第三开口                        221
第二区域                        222
第三部分                        23
第二壳体                        30
第二底壁                        301
第二侧壁                        302
第二空间                        31
第二开口                        311
间隙                            32
第三壳体                        40
第四开口                        41
第一检测单元                    51
第二检测单元                    52
外部充电部                      81
外部充电设备                    82
线缆                            83
被散热结构件                    90
第一表面                        901
第二表面                        902
第三表面                        903
第四表面                        904
电池组                          90a
第一侧面                        91
第二侧面                        92
第三侧面                        93
第四侧面                        94
电芯                            95
电芯壳体                        951
第三部分                          951a
第四部分                          951b
电极端子                          952
支撑件                            96
第一电路板                        97
第二电路板                        98
导电连接部                        99
第一方向                          X
第二方向                          Y
第三方向                          Z
如下具体实施方式将结合上述附图进一步说明本申请。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。
需要说明的是，当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中设置的元件。当一个元件被认为是“设置在”另一个元件，它可以是直接设置在另一个元件上或者可能同时存在居中设置的元件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。本文所使用的术语“垂直的”、“水平的”、“左”、“右”、“顶”、“底”以及类似的表述只是为了说明的目的，并不用于限制本申请。
可以理解，当两元件平行/垂直设置时沿同一方向设置，两元件之间可存在一定的夹角，两元件之间的允许存在0-±10％的公差，两元件大于、等于或小于允许存在0-±10％的公差。
结合附图，对本申请的实施例作进一步的说明。
请参阅图1，本申请的实施方式提供一种散热箱100，用于放入被散热结构件90的至少部分并对被散热结构件90进行散热降温。
请一并参阅图2，散热箱100包括第一壳体10和第一结构件20。第一壳体10包括第一空间11，第一壳体10包括沿第一方向X相对设置的进风口12和出风口13，进风口12和出风口13与第一空间11连通。
第一结构件20包括第一部分21和设于第一部分21的第一开口211。沿第三方向Z，第一开口211贯穿第一部分21并与第一空间11连通，第一开口211用于将被散热结构件90至少部分放入第一空间11中，其中，第三方向Z垂直于第一方向X。
第一部分21包括第一区域212，沿第二方向Y，第一开口211的长度小于第一壳体10的长度，第一区域212位于第一开口211和第一壳体10之间，第二方向Y同时垂直于第一方向X和第三方向Z，第二方向Y垂直于第一方向X和第三方向Z所在平面。
第一部分21包括第四区域217。沿第一方向X，第一开口211的长度小于第一壳体10的长度，第四区域217位于第一开口211和第一壳体10之间。
在一些实施例中，沿第二方向Y，被散热结构件90包括相对设置的第一表面901和第二表面902，以及沿第一方向X相对设置的第三表面903和第四表面904。其中，第三表面903朝向进风口12，第四表面904朝向出风口13。
沿第二方向Y，第一表面901和第二表面902之间的间距小于或等于第一开口211的长度，第一表面901和第二表面902与第一壳体10之间分别设有一气流通道。气流自进风口12进入第一壳体10内，经过第三表面903后分流至第一表面901和第二表面902对应的气流通道，最后气流经过第四表面904后通过出风口13排出。气流环绕经过被散热结构件90的周侧，以对被散热结构件90进行环绕冷却。可选的，沿第一方向X，第三表面903和第四表面904之间的间距小于或等于第一开口211的长度。
被散热结构件90的一部分通过第一开口211并设于第一空间11内，另一部分延伸出第一开口211外，可提高被散热结构件90在散热箱100中的稳定性。在一些实施例中，被散热结构件90延伸出第一开口211外的部分和第一区域212连接， 减小被散热结构件90和第一区域212之间的间隙，限制气流从被散热结构件90和第一区域212之间的间隙流出，提升散热箱100中被散热结构件90的散热效果。可选的，被散热结构件90延伸出第一开口211外的部分和第一区域212接触连接。
在一些实施例中，容纳于第一壳体10内的被散热结构件90的部分可为被散热结构件90易产生热量的部位，例如当被散热结构件90包括电池组时，电池组中对应电芯的部位。
在一些实施例中，上述散热箱100在使用过程中，通过第一开口211将被散热结构件90放入第一壳体10内，被散热结构件90的一部分通过第一开口211并设于第一空间11内，另一部分延伸出第一开口211外。将进风口12连通风扇等设备，风扇等设备产生的气流自进风口12进入第一壳体10内，经过第三表面903后分流至第一表面901和第二表面902对应的气流通道，最后经过第四表面904后通过出风口13排出。气流环绕经过被散热结构件90的周侧，以对被散热结构件90进行环绕冷却，提升散热箱100中被散热结构件90的散热效果。
请继续参阅图2，在一些实施例中，第一壳体10包括第一底壁101和多个第一侧壁102，多个第一侧壁102连接第一底壁101，第一底壁101和多个第一侧壁102围合形成第一空间11，多个第一侧壁102远离第一底壁101的一侧形成第一空间11的开口。第一空间11的开口用于将第一结构件20至少部分放入第一空间11中。进风口12和出风口13贯通第一侧壁102以与第一空间11连通。在一些实施例中，第一侧壁102的数量为四个。
请参阅图3，在一些实施例中，散热箱100还包括第二壳体30。第二壳体30设于第一壳体10内，第一结构件20至少部分设于第一壳体10和第二壳体30之间。第二壳体30设有第二空间31和第二开口311。第二开口311连通第二空间31，第二开口311用于将被散热结构件90放入第二空间31中。第二空间31用于容纳被散热结构件90的至少部分，被散热结构件90产生的热量传递至第二壳体30并通过第二壳体30与气流接触从而实现换热，可降低气流中的杂质对被散热结构件90造成损伤的风险，进一步保护被散热结构件90。
在一些实施例中，第二壳体30包括第二底壁301和多个第二侧壁302，多个第二侧壁302连接第二底壁301，第二底壁301与多个第二侧壁302围合形成第二 空间31，多个第二侧壁302远离第二底壁301的一侧形成第二开口311。在一些实施例中，第二侧壁302的数量为四个。
在一些实施例中，第二空间31内设有冷却液(未图示)，被散热结构件90的部分浸泡于冷却液中，被散热结构件90通过冷却液与第二壳体30进行换热，以提高换热效率。被散热结构件90热失控导致电池组的外壳熔化或破损时，冷却液可渗入被散热结构件90内部，降低被散热结构件90燃烧或爆炸的风险。可选的，冷却液包括水。在一些实施例中，被散热结构件90的部分外周包覆导热膜(未图示)，导热膜可第二壳体30的内表面接触，被散热结构件90通过导热膜与第二壳体30进行换热，以提高换热效率。
请一并参阅图4和图5，在一些实施例中，沿第三方向Z的反方向，第一开口211的投影位于第二开口311的投影区域内。沿第三方向Z，第二壳体30位于第一部分21背离第一区域212的一侧，第一部分21靠近第一开口211的边缘延伸至第二空间31内。被散热结构件90与第二壳体30形成间隙32，冷却液可设于间隙32，被散热结构件90通过冷却液与第二壳体30进行换热，以提高换热效率。
在一些实施例中，间隙32的范围为5mm至20mm。具体地，间隙32位于第一表面901、第二表面902、第三表面903和第四表面904与各自对应的第二侧壁302之间。沿第一方向X，第一表面901和第二表面902与对应的第二侧壁302之间的间距范围为5mm至20mm；沿第二方向Y，第三表面903和第四表面904与对应的第二侧壁302之间的间距范围为5mm至20mm。
在一些实例中，第一部分21还用于与放入第二空间31内的被散热结构件90过盈配合，以提高被散热结构件90在散热箱100中的稳定性。
在一些实施例中，相对第二方向Y和第三方向Z组成的平面，第一部分21朝向第一开口211的一侧设有相对该平面倾斜的第一斜面212a，第一斜面212a向第一壳体10内部延伸。沿第三方向Z的反方向，第一斜面212a使第一开口211的范围逐渐减小，以对被散热结构件90进行导向，便于被散热结构件90通过第一开口211伸入第一壳体10内。
在一些实施例中，第一部分21背离第一区域212的一侧设有第一槽213，第二壳体30的边缘设于第一槽213中。第一部分21还包括第三区域214，第三区域 214位于第一开口211和第一槽213之间。当被散热结构件90依次穿过第一开口211和第二开口311并放入第二空间31内时，第三区域214与被散热结构件90的外周连接，以封闭第二空间31内的冷却液或导热膜，进而提高散热的稳定性。
请参阅图6，在一些实施例中，第一结构件20还包括第二部分22和位于第二部分22的第三开口221。沿第三方向Z，第二部分22与第一部分21间隔设置，第三开口221贯穿第二部分22。第三开口221用于收容被散热结构件90和/或第二壳体30，第二部分22位于第一壳体10和第二壳体30之间，或第二部分22位于第一壳体10和被散热结构件90之间。
在一些实施例中，第二部分22连接于被散热结构件90的外表面，第二部分22包括第二区域222，第二区域222对被散热结构件90限位，提高被散热结构件90在第一壳体10中的稳定性。可选的，沿第一方向X，第二区域222位于第二开口311和被散热结构件90之间。可选的，沿第二方向Y，第二区域222位于第二开口311和被散热结构件90之间。
在一些实施例中，第二部分22连接于第二壳体30的外表面。第二部分22包括第二区域222。第二区域222对第二壳体30限位，提高第二壳体30在第一壳体10中的稳定性。可选的，沿第一方向X，第二区域222位于第二开口311和第一壳体10之间。可选的，沿第二方向Y，第二区域222位于第二开口311和第一壳体10之间。
在一些实施例中，沿第三方向Z，第一底壁101连接于第二部分22，以提高第一结构件20与第一壳体10的连接稳定性。
请继续参阅图6，在一些实施例中，第一结构件20还包括第三部分23，第三部分23连接于第一部分21和第二部分22之间，第三部分23靠近第一侧壁102设置。第三部分23可用于连接第一部分21和第二部分22，提高第一结构件20的结构强度。第三部分23还可以将第一壳体10和被散热结构件90之间分隔形成两个气流通道，两个气流通道沿第二方向Y间隔设置，提升对第一表面901的散热。可选的，第三部分23和第一侧壁102接触连接。
在一些实施例中，第一结构件20还包括两个沿第一方向X相对设置的第三部分23。每一第三部分23连接于第一部分21和第二部分22之间，两个第三部分23 可用于连接第一部分21和第二部分22，提高第一结构件20的结构强度。
在一些实施例中，第二壳体30设于第一壳体10内，部分被散热结构件90容纳于第二壳体30内时，第三部分23将第一壳体10和第二壳体30之间分隔形成两个气流通道，两个气流通道沿第二方向Y间隔设置，提升对第二壳体30的散热。可选的，第三部分23和第一侧壁102接触连接。
请继续参阅图6，在一些实施例中，第一部分21还包括设于第一空间11外的第一凹部215。被散热结构件90包括电池组90a，电池组90a包括导电连接部。第一凹部215可用于收容和导电连接部连接的外部充电部81(参图15)，外部充电部81用于对电池组90a充电。在一些实施例中，第一凹部215形成有第一凹槽216。第一凹槽216用于供外部充电部81的线缆83穿过。
请继续参阅图7，在一些实施例中，进风口12包括两个间隔设于第一侧壁102的进风孔121，每一进风孔121连通于一个气流通道。进风孔121用于与风扇等设备连接，以分别对对应的气流通道导入气流，并使气流流经第一表面901和第二表面902进行冷却。沿第一方向X，靠近第一侧壁102的第三部分23的投影位于两个进风孔121投影之间，有利于提升对被散热结构件90的均匀散热。
在一些实施例中，第一壳体10还包括设于第一侧壁102的导风部122，导风部122环绕设置于进风孔121的周侧并沿第一方向X向外延伸，可用于与风扇等设备的出风端口密封连接，提高气流进入进风口12的稳定性。
在一些实施例中，第一壳体10采用阻燃材料制成，例如金属材料。
在一些实施例中，第一结构件20采用阻燃材料制成，例如具有阻燃性的发泡材料，以在降低被散热结构件90热失控的风险的同时使散热箱100轻量化。可选的，第一结构件20具有弹性，有利于第一结构件和被散热结构件90过盈配合。可选的，第一结构件20具有弹性，有利于第一结构件和第二壳体30过盈配合。
在一些实施例中，第二壳体30采用铝合金材料制成，以提高第二壳体30的结构强度并使第二壳体30轻量化。同时，铝合金材料还能提高第二壳体30的导热能力和抗腐蚀能力。
请一并参阅图8和图9，本申请的实施方式提供一种电池组系统200，包括上述实施例中的任一种散热箱100，被散热结构件90包括电池组90a。电池组90a一 部分设于第一空间11，电池组90a的另一部分延伸出第一空间11。电池组90a包括相对设置的第一侧面91和第二侧面92。沿第二方向Y，电池组90a与第一壳体10之间设有第一通道15和第二通道16。第一通道15设于第一壳体10和第一侧面91之间，第二通道16设于第一壳体10第二侧面92之间。第一通道15连通进风口12和出风口13，第二通道16连通进风口12和出风口13。
在一些实施例中，电池组90a包括沿第一方向X相对设置的第三侧面93和第四侧面94。第三侧面93朝向进风口12，第四侧面94朝向出风口13。沿第一方向X，电池组90a与第一壳体10之间设有第三通道17和第四通道18。第三通道17设于第一壳体10和第四侧面94之间，第四通道18设于第一壳体10和第三侧面93之间。
在一些实施例中，电池组90a包括多个沿第一方向X堆叠设置的电芯95，第三侧面93朝向进风口12，以使气流先与第三侧面93接触，以提高散热面积，进而提高散热效率。第四侧面94朝向出风口13，以提高散热面积，进而提高第一壳体10内的热量与外界环境换热效率。
在一些实施例中，电池组90a设有支撑件96(参图14)。支撑件96连接于第一底壁101，可用于支撑电池组90a。沿第三方向Z，电池组90a和第一底壁101之间设有间隙并形成流道，以对电池组90a的底面进行散热，底面为电池组90a朝向第一底壁101的表面。
上述电池组系统200在使用过程中，通过第一开口211将电池组90a放入第一壳体10内，电池组90a的一部分通过第一开口211并设于第一空间11内，电池组90a的另一部分延伸出第一开口211外。进风口12连通风扇等设备，风扇等设备产生的气流自进风口12进入第一壳体10内，经过第三侧面93后分流至第一通道15，和第二通道16，最后经过第四侧面94后通过出风口13排出。气流环绕经过电池组90a的周侧，以对电池组90a进行环绕冷却，提升散热箱100中电池组90a的散热效果。
可以理解的是，在一些实施例中，散热箱100还包括第二壳体30。第二壳体30设于第一壳体10内，第二空间31用于容纳至少部分电池组90a。对应的，沿第二方向Y，第二壳体30与第一壳体10之间设有间隔设置的第一通道15和第二通 道16，以对被第二壳体30中的电池组90a进行环绕冷却。支撑件96连接于第二底壁301并支撑电池组90a，沿第三方向Z，电池组90a和第二底壁301之间设有间隙并形成流道，以对电池组90a的底面进行散热。
在一些实施例中，沿第三方向Z的反方向，电池组90a的投影与第一部分21的投影至少部分重叠，电池组90a的一部分通过第一开口211并设于第一空间11内，电池组90a的另一部分延伸出第一开口211外，提高电池组90a在散热箱100中的稳定性。
请一并参阅图10和图11，在一些实施例中，第一部分21还包括设于第一空间11外的第一凹部215。电池组90a包括导电连接部99(参图14)，沿第三方向Z，第一凹部215的投影与导电连接部99的投影至少部分重叠。第一凹部215用于收容和导电连接部99电连接的外部充电部81(参图15)，外部充电部81用于连接外部充电设备82并对电池组90a充电。通过第一凹部215收容外部充电部81，使电池组90a在充电的同时进行散热冷却，控制电池组90a充电时的温度。并且第一凹部215对外部充电部81进行限位，提高外部充电部与电池组90a连接的稳定性。可选的，导电连接部99包括连接器。
在一些实施例中，散热箱100还包括第三壳体40。第三壳体40盖合于第一壳体10的开口，可用于防护第一壳体10内的电池组90a，降低电池组90a受损坏风险。第三壳体40还可用于在电池组90a热失控时将电池组90a封闭于第一壳体10内，提高电池组90a的安全性。
在一些实施例中，第一凹部215设有第一凹槽216，第三壳体40设有和第一凹槽216连通的第四开口41。外部充电部81的线缆83穿过第四开口41，以使第三壳体40在盖合于第一壳体10的开口时仍能继续通过外部充电部81给电池组90a充电，降低电池组90a在充电时人员误触的风险。
请一并参阅图12和图13，电池组90a包括多个沿第一方向X堆叠设置的电芯95。电芯95包括电极组件(未图示)、电芯壳体951、以及连接至电极组件并且从电芯壳体951引出的电极端子952。
请参阅图14，电芯壳体951包括具有用于容纳电极组件的第三部分951a和从第三部分951a向外延伸的第四部分951b。第三部分951a位于第一空间11或第二 空间31内，以使气流环绕经过电极组件外侧，提高电极组件的散热效率。第四部分951b向外延伸，以使电极端子952连接于电池组90a中的第一电路板97。可选的，电芯壳体951包括铝塑膜，电芯95包括软包电芯。
在一些实施例中，沿第一方向X，第三部分951a的投影位于第四通道18的投影范围，沿与第一方向X相反的方向，第三部分951a的投影位于第三通道17的投影范围，可提升对电芯95的散热。
在一些实施例中，沿第二方向Y，第三部分951a的投影位于第一通道15的投影范围，沿与第二方向Y相反的方向，第三部分951a的投影位于第二通道16的投影范围，可提升对电芯95的散热。
在一些实施例中，散热箱100还包括第一检测单元51，第一检测单元51设于第一凹部215中。第一检测单元51电连接于电池组90a中的第二电路板98，第二电路板98中设有控制单元。第一检测单元51用于检测电池组的导电连接部99的温度，控制单元用于获取电池组90a的温度。
在一些实施例中，散热箱100还包括第二检测单元52，第二检测单元52设于第一壳体10或第二壳体30上。第二检测单元52还电连接于电池组90a中的第二电路板98，第二电路板98中设有控制单元。第二检测单元52和第一检测单元51用于配合检测电池组90a的温度，控制单元用于获取电池组90a的温度。
在一些实施例中，控制单元包括处理器，处理器与第一检测单元51或与第二检测单元52通讯连接，外部充电部81和风扇等设备通讯连接。以风扇为例，处理器用于执行以下步骤：
S1，获取电池组的温度；
S2，将电池组温度与第一温度范围对比，并判断是否对电池组充电以及是否开启风扇进行散热。
第一温度范围包括最低温度和最高温度，当电池组90a的温度低于最低温度时，处理器控制电池组90a和外部充电部81连接充电。
当电池组90a的温度处于最低温度和最高温度之间时，处理器控制电池组90a和外部充电部81连接充电并启动风扇产生对电池组90a进行降温。
当电池组90a的温度高于最高温度时，处理器先启动风扇对电池组90a进行降 温，直至电池组90a的温度低于最高温度时，控制电池组90a和外部充电部81连接充电并启动风扇产生对电池组90a进行降温。
当上述电池组系统200应用于无人机等用电设备中时，当一电池组90a在用电设备中放完电之后，取下电池组90a放入散热箱100中，使替换下的电池组90a充电的同时进行散热冷却。与现有等待替换下电池组90a冷却后再进行充电的方式相比，可减少备用电池组的数量，一台无人机只需要配备两个电池即可实现无间断工作的要求，进而降低运营成本。
请参阅图16，本申请的实施方式提供一种用电设备300，包括上述实施例中的任一种电池组系统200。
综上，本申请的散热箱100，和装载上述散热箱100的电池组系统200及用电设备300中，通过第一开口211将被散热结构件90放入第一壳体10内，被散热结构件90的一部分通过第一开口211并设于第一空间11内，另一部分延伸出第一开口211外并通过第一区域212外。再将进风口12连通风扇等出风设备，风扇等出风设备产生的气流流经被散热结构件90和第一壳体10之间的气流通道并通过出风口13排出。气流环绕经过被散热结构件90的周侧，以对被散热结构件90进行环绕冷却，提升散热箱100中被散热结构件90的散热效果。
另外，本领域技术人员还可在本申请精神内做其它变化，当然，这些依据本申请精神所做的变化，都应包含在本申请所公开的范围。

Claims (13)

  1. 一种散热箱，其特征在于，包括：
    第一壳体，包括第一空间，所述第一壳体包括沿第一方向相对设置的进风口和出风口；
    第一结构件，包括第一部分和设于第一部分的第一开口，沿第三方向，所述第一开口贯穿所述第一部分，所述第一开口与所述第一空间连通，所述第一开口用于将被散热结构件至少部分放入所述第一空间，其中，所述第三方向垂直于所述第一方向，
    所述第一部分包括第一区域，沿第二方向，所述第一开口的长度小于所述第一壳体的长度，所述第一区域位于所述第一开口和所述第一壳体之间，其中，所述第二方向垂直于所述第一方向和所述第三方向。
  2. 如权利要求1所述的散热箱，其特征在于，所述散热箱还包括第二壳体，所述第二壳体设于所述第一壳体内，所述第一结构件至少部分设于所述第一壳体和所述第二壳体之间，所述第二壳体设有第二空间，所述第二空间用于容纳所述被散热结构件的至少部分。
  3. 如权利要求2所述的散热箱，其特征在于，沿所述第三方向，所述第二壳体还设有连通所述第二空间的第二开口，沿所述第三方向的反方向，所述第一开口的投影位于所述第二开口的投影的区域内。
  4. 如权利要求1或2所述的散热箱，其特征在于，所述第一结构件还包括第二部分和位于所述第二部分的第三开口，沿所述第三方向，所述第二部分与所述第一部分间隔设置，所述第三开口贯穿所述第二部分，第三开口用于容纳所述被散热结构件和/或所述第二壳体，所述第二部分位于所述第一壳体和所述第二壳体之间，或所述第二部分位于所述第一壳体和所述被散热结构件之间。
  5. 如权利要求4所述的散热箱，其特征在于，所述第一结构件还包括第三部分，沿第三方向，所述第三部分连接于所述第一部分和所述第二部分。
  6. 如权利要求2所述的散热箱，其特征在于，所述第二壳体内设有冷却液。
  7. 如权利要求1所述的散热箱，其特征在于，所述第一部分包括设于所述第 一空间外的第一凹部，所述第一凹部形成有第一凹槽。
  8. 一种电池组系统，其特征在于，包括如权利要求1至6中任一项所述的散热箱，所述被散热结构件包括电池组，所述电池组的一部分设于所述第一空间，所述电池组的另一部分延伸出所述第一空间；
    沿第二方向，所述电池组包括相对设置的第一侧面和第二侧面，所述电池组与所述第一壳体之间形成第一通道和第二通道，所述第一通道设于所述第一壳体和所述第一侧面之间，所述第二通道设于所述第一壳体和所述第二侧面之间；
    所述第一通道连通所述进风口和所述出风口，所述第二通道连通所述进风口和所述出风口。
  9. 如权利要求8所述的电池组系统，其特征在于，沿所述第三方向，所述电池组的投影与所述第一部分的投影至少部分重叠。
  10. 如权利要求8所述的电池组系统，其特征在于，所述第一部分包括设于所述第一空间外的第一凹部，所述第一凹部形成有第一凹槽，所述电池组包括导电连接部，所述第一凹槽用于容纳和所述导电连接部连接的外部充电部。
  11. 如权利要求10所述的电池组系统，其特征在于，所述散热箱还包括第三壳体，所述第三壳体盖合于所述第一壳体的开口，所述第三壳体设有和所述第一凹槽连通的第四开口。
  12. 如权利要求8所述的电池组系统，其特征在于，所述电池组包括多个沿所述第一方向堆叠设置的电芯，所述电芯包括电极组件、电芯壳体、以及连接至所述电极组件并且从所述电芯壳体引出的电极端子，电芯壳体包括具有用于容纳所述电极组件的第三部分和从所述第三部分向外延伸的第四部分，所述第三部分位于所述第一空间内。
  13. 一种用电设备，其特征在于，包括如权利要求8-12中任意一项所述的电池组系统。
PCT/CN2022/114312 2021-09-09 2022-08-23 散热箱、电池组系统及用电设备 WO2023035937A1 (zh)

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