WO2024092448A1 - 电池组和用电设备 - Google Patents

电池组和用电设备 Download PDF

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Publication number
WO2024092448A1
WO2024092448A1 PCT/CN2022/128756 CN2022128756W WO2024092448A1 WO 2024092448 A1 WO2024092448 A1 WO 2024092448A1 CN 2022128756 W CN2022128756 W CN 2022128756W WO 2024092448 A1 WO2024092448 A1 WO 2024092448A1
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WO
WIPO (PCT)
Prior art keywords
side wall
channel
opening
battery pack
battery cell
Prior art date
Application number
PCT/CN2022/128756
Other languages
English (en)
French (fr)
Inventor
彭芳桂
郭秋平
Original Assignee
厦门新能达科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 厦门新能达科技有限公司 filed Critical 厦门新能达科技有限公司
Priority to PCT/CN2022/128756 priority Critical patent/WO2024092448A1/zh
Publication of WO2024092448A1 publication Critical patent/WO2024092448A1/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method

Definitions

  • the present application relates to the field of energy storage technology, and in particular to a battery pack and an electrical device.
  • the current traditional heat dissipation method is to add heat sinks between battery cells.
  • this heat dissipation method has a slow heat dissipation speed and limited heat dissipation for the battery pack, which also affects the battery equipment using the battery pack.
  • An embodiment of the present application provides a battery pack, including a shell assembly, a battery cell assembly, a first connector, a second connector and a heat dissipation assembly.
  • the shell assembly is provided with a first opening and a second opening.
  • the battery cell assembly is accommodated in the shell assembly.
  • the first connector is arranged in the shell assembly.
  • the first connector has a first channel.
  • the first channel is connected to the first opening.
  • the second connector is arranged in the shell assembly.
  • the second connector has a second channel connected to the first channel.
  • the second channel is connected to the second opening.
  • the heat dissipation assembly is arranged in the first channel.
  • the heat dissipation assembly includes a driving member.
  • the driving member is disposed in the first channel, and the coolant is sucked into the first channel or the second channel through the driving member.
  • the heat dissipation assembly includes a first wire.
  • the first wire electrically connects the driver and the battery core assembly.
  • the first wire includes a power wire.
  • the first wire can be electrically connected to an external power source to provide electrical energy to the driving member.
  • the first wire includes a signal wire.
  • the first wire is electrically connected to the battery cell assembly.
  • the first wire can obtain voltage information, temperature information, and current information of the battery cell assembly.
  • the first wire may include both a power wire and a signal wire.
  • the electric energy of the battery cell assembly is transmitted to the driving member through a first conductive wire.
  • the battery pack further comprises a circuit board disposed in the housing assembly.
  • the circuit board electrically connects the battery core assembly and the heat dissipation assembly.
  • the circuit board can control the start and stop of the driving member.
  • the heat dissipation assembly further includes a first structural member, and the driving member is disposed in the first structural member.
  • the first structural member includes a through hole, and the first wire passes through the through hole and is connected to the battery cell assembly.
  • the housing assembly includes a first wall and a first side wall and a second side wall connected to the first wall.
  • the first side wall and the second side wall are arranged in a first direction.
  • At least one of the first side wall and the second side wall is provided with a first opening or the first wall is provided with a first opening.
  • the first opening can be used as an air outlet or as an air inlet.
  • the number of air outlets or air inlets can be increased to further improve heat dissipation.
  • the shell assembly further includes a third side wall and a fourth side wall.
  • the third side wall connects the first side wall and the second side wall.
  • the fourth side wall connects the first side wall and the second side wall.
  • the third side wall and the fourth side wall are arranged along a second direction.
  • the second direction is perpendicular to the first direction.
  • At least one of the third side wall and the fourth side wall is provided with a second opening.
  • the second opening can be used as an air outlet or as an air inlet.
  • the third side wall and the fourth side wall are both provided with a second opening, the number of air outlets or air inlets can be increased to further improve heat dissipation.
  • the first side wall and the second side wall are both provided with a first opening.
  • the first channel has a first through hole, a second through hole, and a third through hole.
  • the first opening on the first side wall is connected to the first channel through the first through hole.
  • the first opening on the second side wall is connected to the first channel through the second through hole.
  • the second channel is connected to the first channel through the third through hole.
  • the first opening from the first side wall to the first opening of the second side wall serves as a heat dissipation channel
  • the first opening from the first side wall to the second channel serves as another heat dissipation channel to improve heat dissipation.
  • the first wall is provided with a first opening.
  • the first channel has a first through hole and a second through hole.
  • the first opening on the first wall is connected to the first channel through the first through hole.
  • the first channel and the second channel are connected through the second through hole.
  • the first side wall is further provided with a third opening.
  • the second side wall is further provided with a fourth opening.
  • the first connecting member is further provided with a third channel.
  • the third channel connects the third opening and the fourth opening, and heat dissipation is further improved by adding the third channel.
  • a first notch is provided at one end of the first connector connected to the second connector.
  • a projection of the first notch overlaps with a projection of the second channel, and the air in the first channel is transferred to the second channel by providing the first notch.
  • the battery cell assembly includes a first column of battery cell groups.
  • the first column of battery cell groups includes a plurality of battery cells stacked along a first direction.
  • the battery cell includes a battery cell housing, an electrode assembly disposed in the battery cell housing, and an electrode terminal connected to the electrode assembly and led out of the battery cell housing.
  • the battery cell assembly further includes a second column of battery cell groups, and the first column of battery cell groups and the second column of battery cell groups are arranged along the second direction.
  • the first connector is disposed between the first column of battery cell groups and the second column of battery cell groups, and can simultaneously transfer heat from the first column of battery cell groups and the second column of battery cell groups to the first connector, and quickly dissipate heat through the first channel, the second channel, and the third channel.
  • a first insulating layer and a first insulating member are further included.
  • the first insulating member is disposed on a side of the second connector away from the first connector.
  • the first insulating layer is disposed between the first insulating member and the second connector.
  • the projection of the electrode terminal overlaps with the projection of the first insulating layer, and the electrode terminal between the first insulating member and the second connector is insulated and fixed by the first insulating layer.
  • a glue pouring channel is provided on the third side wall, and flowing insulating material is injected through the glue pouring channel between the first insulating member and the second connecting member to form a first insulating layer after solidification.
  • the first insulating layer includes at least one of a potting glue and a foaming glue.
  • the projection of the first insulating member overlaps with the projection of the second connecting member.
  • the projection of the electrode terminal is located within the projection of the first insulating member.
  • the third direction is perpendicular to the first direction and the second direction, and can insulate the conductive sheet and the electrode terminal.
  • a second insulating layer is further included.
  • the second insulating layer is disposed between the battery cell housing and the second connector.
  • the second insulating layer is formed by injecting a flowing insulating material between the battery cell housing and the second connector and then curing the material.
  • the electrode terminal between the battery cell housing and the second connector is further insulated and fixed by the second insulating layer.
  • a first row of protrusions is provided on one side of the second connector facing the battery cell.
  • the first row of protrusions includes a plurality of first protrusions spaced apart along the first direction. Each first protrusion extends along the second direction.
  • the first protrusion is hollow. One end of the first protrusion is connected to the first channel, and the other end is connected to the second opening, and the first protrusion is hollowed out to serve as the second channel.
  • the electrode terminal is disposed between adjacent first protrusions.
  • the projection of the electrode terminal overlaps with the projection of the first protrusion.
  • the projection of the electrode terminal is separated from the projection of the first protrusion, and the electrode assembly is limited by the adjacent first protrusions.
  • the distance between adjacent first protrusions along the first direction is set to increase from small to large, so that the opening between adjacent first protrusions is flared, which is convenient for the electrode terminal to pass through between adjacent first protrusions.
  • the position of the electrode terminal can also be located, which is convenient for the electrode terminal to pass through the second connecting member.
  • the second connector is further provided with a second row of protrusions.
  • the first connector is provided between the first row of protrusions and the second row of protrusions.
  • the second row of protrusions includes a second protrusion that is hollow. External air is discharged from the first protrusion in a direction opposite to the second direction and discharged from the second protrusion in the second direction.
  • An embodiment of the present application further provides an electrical device, comprising the battery pack in any of the above embodiments.
  • the above-mentioned battery pack and electrical equipment set the first opening and the second opening in the shell component and set the first channel and the second channel in the shell component, so that air flows in the first channel and the second channel to take away the heat of the battery cell component and improve the heat dissipation efficiency of the battery.
  • the heat dissipation component is set in the first channel to further improve the heat dissipation.
  • FIG. 1 is a schematic diagram showing the structure of a battery pack in some embodiments.
  • FIG. 2 is a schematic structural diagram of a battery pack from another perspective in some embodiments.
  • FIG. 3 is a schematic structural diagram of a battery pack from another perspective in some embodiments.
  • FIG. 4 is a schematic structural diagram of a battery pack from another perspective in some embodiments.
  • FIG. 5 is an exploded schematic diagram of a battery pack in some embodiments.
  • FIG. 6 is a schematic diagram showing the structure of a battery pack without a housing assembly in some embodiments.
  • FIG. 7 shows an exploded schematic diagram of FIG. 6 .
  • FIG. 8 shows a schematic diagram of the structure of a battery pack in some other embodiments.
  • FIG. 9 is a schematic diagram showing the structure of a battery cell assembly in some embodiments.
  • FIG. 10 is a schematic diagram of an exploded view of a battery cell in some embodiments.
  • FIG. 11 is a schematic diagram of an exploded view of a battery cell in some embodiments.
  • FIG. 12 is a schematic diagram showing the structure of the first connecting member in some embodiments.
  • FIG. 13 is a schematic diagram showing the structure of the first connecting member and the heat dissipation assembly in some embodiments.
  • FIG. 14 shows a schematic structural diagram of a first connecting member and a heat dissipation assembly in some other embodiments.
  • FIG. 15 is a schematic cross-sectional view of the battery pack along line II-II in FIG. 1 .
  • FIG. 16 is a schematic diagram showing the structure of a circuit board and a battery pack after removing the housing assembly in some embodiments.
  • FIG. 17 is a schematic diagram showing the structure of the second connecting member in some embodiments.
  • FIG. 18 is an exploded schematic diagram showing a second connecting member in some embodiments.
  • FIG. 19 is a schematic cross-sectional view of a second connecting member in some embodiments.
  • FIG. 20 is a schematic structural diagram of the second connecting member from another perspective in some embodiments.
  • FIG. 21 is a schematic cross-sectional view of the battery pack along line III-III in FIG. 1 .
  • FIG. 22 shows an enlarged schematic diagram of portion IV of FIG. 21.
  • FIG. 23 is a schematic diagram showing the structure of an inverted battery pack in some embodiments.
  • FIG. 24 shows schematic cross-sectional views of battery packs along line III-III in some other embodiments.
  • FIG. 25 is an enlarged schematic diagram of the V portion of FIG. 24 .
  • FIG. 26 is a schematic diagram showing the structure of electrical equipment in some embodiments.
  • Second side wall 113 Second side wall 113
  • Second conductive part 4151 Second conductive part 4151
  • a component When a component is considered to be “provided on” another component, it can be directly provided on the other component or there may be a component in between. When a component is considered to be “connected to” another component, it can be directly connected to the other component or there may be a component in between.
  • perpendicular is used to describe an ideal state between two components. In actual production or use, there may be a state that is approximately perpendicular between the two components.
  • perpendicularity can refer to the angle between two straight lines being between 90° ⁇ 10°
  • perpendicularity can also refer to the dihedral angle between two planes being between 90° ⁇ 10°
  • perpendicularity can also refer to the angle between a straight line and a plane being between 90° ⁇ 10°.
  • the two components described as "perpendicular” may not be absolute straight lines or planes, but may be roughly straight lines or planes. From a macroscopic perspective, a component can be considered a "straight line” or a "plane” if the overall extension direction is a straight line or a plane.
  • An embodiment of the present application provides a battery pack and an electrical device having the battery pack, wherein the battery pack includes a shell assembly, a battery cell assembly, a first connector, a second connector, and a heat dissipation assembly.
  • the shell assembly is provided with a first opening and a second opening.
  • the battery cell assembly is accommodated in the shell assembly.
  • the first connector is arranged in the shell assembly.
  • the first connector has a first channel.
  • the first channel is connected to the first opening.
  • the second connector is arranged in the shell assembly.
  • the second connector has a second channel connected to the first channel.
  • the second channel is connected to the second opening.
  • the heat dissipation assembly is arranged in the first channel.
  • an embodiment of the present application provides a battery pack 100, including a housing assembly 10, a battery cell assembly 20, a first connector 30, and a second connector 40.
  • the housing assembly 10 is provided with a first space, and the battery cell assembly 20, the first connector 30, and the second connector 40 are all provided in the first space.
  • the housing assembly 10 is provided with a first opening 10a and a second opening 10b connected to the first space, and the first connector 30 is provided with a first channel 30a, and one end of the first channel 30a is connected to the first opening 10a.
  • the second connector 40 connects the battery cell assembly 20 and the first connector 30, and the second connector 40 is provided with a second channel 40a, and the second channel 40a is connected to the first channel 30a and the second opening 10b. External air can enter the first channel 30a from the first opening 10a, flow to the second channel 40a, and be discharged from the second opening 10b, or external air can enter the second channel 40a from the second opening 10b, flow to the first channel 30a, and be discharged from the first opening 10a.
  • the heat of the battery cell assembly 20 is at least partially transferred to the first connector 30 , and then dissipated to the outside of the battery pack 100 through external air flowing in the first channel 30 a and the second channel 40 a , thereby dissipating the heat of the battery cell assembly 20 .
  • the battery pack 100 can use external air to remove the heat of the battery cell assembly 20 through the flow of air.
  • natural wind or external air cooling equipment can be used to dissipate heat.
  • the battery pack 100 can be used on a device that is in motion during use, such as a drone, an electric power-assisted vehicle, etc. Since the air flows faster when the device moves, the battery pack 100 can be quickly cooled.
  • the housing assembly 10 includes a first housing 11 and a second housing 12, the first housing 11 is provided with a first space, and the second housing 12 is connected to the first housing 11 to close the first space.
  • the first housing 11 includes a first wall 111, a first side wall 112, a second side wall 113, a third side wall 114, and a fourth side wall 115.
  • the first side wall 112 and the second side wall 113 are both connected to the first wall 111, and the first side wall 112 and the second side wall 113 are arranged in an array.
  • the third side wall 114 and the fourth side wall 115 are both connected to the first wall 111, and the third side wall 114 and the fourth side wall 115 are arranged in an array.
  • the third side wall 114 is also connected to the first side wall 112 and the second side wall 113
  • the fourth side wall 115 is also connected to the first side wall 112 and the second side wall 113, and the first space is formed.
  • the second housing 12 is connected to the first side wall 112, the second side wall 113, the third side wall 114, and the fourth side wall 115.
  • the first wall 111 , the first side wall 112 , the second side wall 113 , the third side wall 114 and the fourth side wall 115 may be connected to form the first housing 11 by screw locking, welding or bonding.
  • the first shell 11 and the second shell 12 include a heat-conducting material to improve the heat dissipation performance.
  • the heat-conducting material includes a metal heat-conducting material and a heat-conducting insulating material, and the insulating material can cover the outer surface of the metal heat-conducting material.
  • the metal heat-conducting material of the first shell 11 and the second shell 12 includes aluminum.
  • the outer wall of the second shell 12 is provided with fins 121, and the fins 121 are arranged along the second direction Y. The fins 121 can increase the contact area between the second shell 12 and the air, further improving the heat dissipation performance.
  • the structure of the battery pack 100 will be described in combination with X, Y, and Z coordinate axes.
  • the X, Y, and Z coordinate axes are perpendicular to each other, and the X direction is defined as the first direction, the Y direction is defined as the second direction, and the Z direction is defined as the third direction.
  • the first direction X is the direction in which the first side wall 112 and the second side wall 113 are arranged, the second direction Y is the direction in which the third side wall 114 and the fourth side wall 115 are arranged, and the third direction Z is the direction in which the second shell 12 and the first wall 111 are arranged.
  • the first direction X is perpendicular to both the second direction Y and the third direction Z.
  • the first opening 10a passes through the first side wall 112.
  • the second opening 10b passes through the third side wall 114.
  • the first channel 30a connects the first opening 10a on the first side wall 112, the first channel 30a communicates with one end of the second channel 40a, and the second channel 40a connects the second opening 10b on the third side wall 114.
  • the first opening 10a is an air inlet
  • the second opening 10b is an air outlet.
  • the air enters from the first opening 10a through the first channel 30a, flows from the first channel 30a to the second channel 40a, and is discharged from the second opening 10b to improve heat dissipation.
  • the second opening 10b is an air inlet
  • the first opening 10a is an air outlet.
  • the first opening 10a is provided in one of the first side wall 112 and the second side wall 113, and the second opening 10b is provided in one of the third side wall 114 and the fourth side wall 115
  • the first opening 10a is provided in the first side wall 112
  • the second opening 10b may be provided in the fourth side wall 115.
  • the first opening 10a is provided in the first side wall 112
  • the second opening 10b is provided in the third side wall 114.
  • the first opening 10a may be provided in the second side wall 113
  • the second opening 10b may be provided in the third side wall 114.
  • the first opening 10a may be provided in the second side wall 113
  • the second opening 10b may be provided in the fourth side wall 115.
  • the first side wall 112 and the second side wall 113 are both provided with a first opening 10a, the first opening 10a passes through the first side wall 112, and the first opening 10a passes through the second side wall 113.
  • the second opening 10b is provided on the third side wall 114, and the second opening 10b passes through the third side wall 114.
  • the first channel 30a is provided with a first through hole 301, a second through hole 302, and a third through hole 303, and the first through hole 301 and the second through hole 302 are arranged along the first direction X.
  • the first opening 10a on the first side wall 112 is connected to the first channel 30a through the first through hole 301
  • the first opening 10a on the second side wall 113 is connected to the first channel 30a through the second through hole 302
  • the first channel 30a is connected to the second channel 40a through the third through hole 303
  • the second channel 40a is connected to the second opening 10b on the third side wall 114.
  • the battery pack 100 moves in a direction opposite to the second direction Y or the wind direction of the external air-cooling device is toward the second direction Y
  • the second opening 10b is an air inlet
  • the first opening 10a on the first side wall 112 and the first opening 10a on the second side wall 113 are both air outlets.
  • first side wall 112 and the second side wall 113 are both provided with the first opening 10a, and the second opening 10b is provided in one of the third side wall 114 and the fourth side wall 115, optionally, the first side wall 112 and the second side wall 113 are both provided with the first opening 10a, and the second opening 10b can also be provided in the fourth side wall 115.
  • the first side wall 112 is provided with a first opening 10a, the first opening 10a passes through the first side wall 112, the second opening 10b is provided on the third side wall 114, the second opening 10b passes through the third side wall 114, the second opening 10b is provided on the fourth side wall 115, and the second opening 10b passes through the fourth side wall 115.
  • the first channel 30a is connected to the first opening 10a, the first channel 30a is connected to the second channel 40a, one end of the second channel 40a is connected to the second opening 10b on the third side wall 114, and the other end is connected to the second opening 10b on the fourth side wall 115.
  • the first opening 10a of the first side wall 112 is an air inlet
  • the second openings 10b on the third side wall 114 and the fourth side wall 115 are air outlets. Air enters from the first opening 10a of the first side wall 112, passes through the first channel 30a, and flows from the first channel 30a to the second channel 40a. Part of the air is discharged from the second opening 10b of the third side wall 114, and part of the air is discharged from the second opening 10b of the fourth side wall 115.
  • the air volume is increased, and the heat dissipation is further improved.
  • the second opening 10b of the third side wall 114 is an air inlet
  • the first opening 10a on the first side wall 112 and the second opening 10b on the fourth side wall 115 are both air outlets.
  • the third side wall 114 and the fourth side wall 115 are both provided with the second opening 10b
  • the first opening 10a is provided in one of the first side wall 112 and the second side wall 113
  • the third side wall 114 and the fourth side wall 115 are both provided with the second opening 10b
  • the first opening 10a can also be provided in the second side wall 113.
  • first side wall 112 and the second side wall 113 are both provided with a first opening 10a, the first opening 10a penetrates the first side wall 112, and the first opening 10a penetrates the second side wall 113.
  • the third side wall 114 and the fourth side wall 115 are both provided with a second opening 10b, the second opening 10b penetrates the third side wall 114, and the second opening 10b penetrates the fourth side wall 115.
  • the first channel 30a is provided with a first through hole 301, a second through hole 302, and a third through hole 303.
  • the first opening 10a on the first side wall 112 is connected to the first channel 30a through the first through hole 301
  • the first opening 10a on the second side wall 113 is connected to the first channel 30a through the second through hole 302
  • the first channel 30a is connected to the second channel 40a through the third through hole 303
  • the second channel 40a is connected to the second opening 10b on the third side wall 114
  • the second channel 40a is connected to the second opening 10b on the fourth side wall 115.
  • the first opening 10a of the first side wall 112 is an air inlet
  • the first opening 10a on the second side wall 113, the second opening 10b on the third side wall 114, and the second opening 10b on the fourth side wall 115 are all air outlets.
  • the air outlet By increasing the air outlet, the air output is increased, and the heat dissipation is further improved.
  • the first opening 10a on the first side wall 112 and the first opening 10a on the second side wall 113 are both air inlets.
  • the first opening 10a on the second side wall 113 is an air inlet
  • the first opening 10a on the first side wall 112 is an air outlet.
  • the first opening 10a on the first side wall 112 is an air inlet
  • the first opening 10a on the second side wall 113 is an air outlet.
  • the first opening 10a is provided on the first wall 111 , and the first opening 10a passes through the first wall 111 , and the second opening 10b is provided on the third side wall 114 .
  • the first channel 30a is provided with a first through hole 301 and a second through hole 302 , and the second through hole 302 and the first through hole 301 are arranged along the third direction Z.
  • the first opening 10a on the first wall 111 is connected to the first channel 30a through the first through hole 301
  • the second through hole 302 is connected to the second channel 40a .
  • the first opening 10a on the first wall 111 is an air inlet
  • the second opening 10b on the third side wall 114 is an air outlet. Air enters from the first opening 10a on the first wall 111 , passes through the first channel 30a , flows from the first channel 30a to the second channel 40a , and is discharged from the second opening 10b of the third side wall 114 , thereby improving heat dissipation.
  • the first opening 10a is provided on the first wall 111
  • the second opening 10b can also be provided on the fourth side wall 115.
  • the first opening 10a is provided on the first wall 111, and the third side wall 114 and the fourth side wall 115 can also be provided with the second opening 10b.
  • the first connecting member 30 is further provided with a third channel 30b, and the first channel 30a and the third channel 30b are spaced apart and are not connected to each other.
  • the first side wall 112 is further provided with a third opening 1121
  • the second side wall 113 is provided with a fourth opening 1131.
  • the third opening 1121 and the fourth opening 1131 are arranged along the first direction X.
  • One end of the third channel 30b is connected to the third opening 1121, and the other end is connected to the fourth opening 1131.
  • the air enters from the fourth opening 1131 and is discharged from the third opening 1121.
  • the air enters from the third opening 1121 and is discharged from the fourth opening 1131.
  • the first opening 10a and the third opening 1121 on the first side wall 112 are arranged along the third direction Z.
  • the projection area of the third opening 1121 is larger than the projection area of the first opening 10a, which is conducive to further improving the heat dissipation effect.
  • the first opening 10a and the fourth opening 1131 on the second side wall 113 are arranged along the third direction Z.
  • the projection area of the fourth opening 1131 is larger than the projection area of the first opening 10a, which is conducive to further improving the heat dissipation effect.
  • first side wall 112 and the second side wall 113 are provided with a plurality of first connecting holes 1122, and the two side surfaces of the first connecting member 30 arranged along the first direction X are provided with a plurality of second connecting holes 30c, and fasteners (not shown), such as screws, etc., pass through the first connecting holes 1122 and the second connecting holes 30c to fix the first connecting member 30 to the first side wall 112 and the second side wall 113.
  • the cell assembly 20 includes a first column of cell groups 20a, and the first column of cell groups 20a includes a plurality of cells 21 stacked along a first direction X.
  • the cell 21 includes a cell housing 211, an electrode assembly 212 disposed in the cell housing 211, and an electrode terminal 213 connected to the electrode assembly 212 and extending from the cell housing 211.
  • the cell housing 211 includes a first portion 211a and a second portion 211b, the first portion 211a accommodating the electrode assembly 212, the second portion 211b connected to the first portion 211a, and the electrode terminal 213 extending from the second portion 211b.
  • the battery cell housing 211 includes a first housing 2111 and a second housing 2112, and the first housing 2111 is connected to the second housing 2112. At least one of the first housing 2111 and the second housing 2112 is provided with a recess for placing the electrode assembly 212.
  • the first housing 2111 and the second housing 2112 can be folded along the connection position (dashed line position) so that the first housing 2111 and the second housing 2112 overlap to form a first portion 211a to cover the electrode assembly 212.
  • the circumference of the first housing 2111 extends outward to form a plurality of first extensions 2113, and the circumference of the second housing 2112 extends outward to form a plurality of second extensions 2114.
  • the second portion 211b includes a first sealing portion 2115 and a second sealing portion 2116, the first sealing portion 2115 is arranged opposite to the connection position, and the electrode terminal 213 extends from the first sealing portion 2115 to the first portion 211a.
  • the second portion 211b includes two second sealing portions 2116, and the two second sealing portions 2116 are arranged along the second direction Y.
  • the second portion 211b includes one first sealing portion 2115
  • the battery cell 21 includes two electrode terminals 213, and the two electrode terminals 213 extend from the first sealing portion 2115 to the battery cell housing 211.
  • the first shell 2111 and the second shell 2112 are not integrally arranged
  • the second part 211b includes two first sealing portions 2115
  • the two first sealing portions 2115 are arranged along a third direction Z.
  • the battery cell 21 includes two electrode terminals 213, one of which extends out of the battery cell housing 211 from one of the first sealing portions 2115, and the other electrode terminal 213 extends out of the battery cell housing 211 from the other first sealing portion 2115, and the two electrode terminals 213 are arranged along the third direction Z.
  • the electrode assembly 212 includes a wound structure formed by winding a positive electrode sheet, a negative electrode sheet, and a separator.
  • the electrode assembly 212 can also be a laminated structure, where the positive electrode sheet, the separator, and the negative electrode sheet are stacked in sequence to form an electrode assembly unit, and multiple electrode assembly units are stacked to form the electrode assembly 212.
  • the battery cell housing 211 includes an aluminum-plastic film.
  • the battery cell 21 includes a soft-pack battery cell.
  • the electrode terminal 213 has a welding portion 213a extending out of the battery cell housing 211, and the welding portion 213a is formed after the electrode terminal 213 is bent.
  • the electrode terminals 213 of adjacent battery cells 21 are bent toward each other and connected to the second connector 40.
  • the electrode terminal 213 includes a first terminal 213b and a second terminal 213c, the first terminal 213b and the second terminal 213c have opposite polarities, one of the first terminal 213b and the second terminal 213c is a positive terminal, and the other is a negative terminal.
  • the projection of the welding portion 213a of the first terminal 213b of the battery cell 21 at least partially overlaps with the projection of the welding portion 213a of the second terminal 213c of the adjacent battery cell 21.
  • the first terminal 213b and the second terminal 213c of the adjacent battery cell 21 are bent toward each other, and the welding portion 213a of the first terminal 213b and the welding portion 213a of the second terminal 213c are stacked and connected with each other.
  • the first column of battery cell group 20a further includes a first heat conductive member 22a, each battery cell 21 is in contact with at least one first heat conductive member 22a, and the first heat conductive member 22a is in contact with the first shell 11, and the heat of the battery cell 21 is transferred to the first shell 11 through the first heat conductive member 22a, and then the heat of the battery cell 21 is dissipated through the first shell 11.
  • the first heat conductive member 22a includes an aluminum sheet.
  • the battery cell 21 includes a first side surface 21a, a second side surface 21b, a third side surface 21c, and a fourth side surface 21d.
  • the first side surface 21a and the second side surface 21b are arranged along the second direction Y.
  • the first side surface 21a, the second side surface 21b, and the third side surface 21c are all connected to the fourth side surface 21d.
  • the third side surface 21c and the electrode terminal 213 are arranged in the third direction Z.
  • the first heat conductor 22a is connected to the fourth side surface 21d and is bent and extended to the first side surface 21a, the second side surface 21b, and the third side surface 21c.
  • the first heat conductive member 22a located on the first side surface 21a contacts and connects the third side wall 114
  • the first heat conductive member 22a located on the third side surface 21c contacts and connects the surface of the first wall 111.
  • the heat of the battery cell 21 is transferred to the first connecting member 30 and the first shell 11 through the first heat conductive member 22a, and then dissipated through the first connecting member 30 and the first shell 11, thereby improving the heat dissipation effect of the battery cell 21.
  • the first heat conductive member 22a is directly in contact and connected with the first connecting member 30.
  • an elastic member 23 is further provided between adjacent first heat conducting members 22 a .
  • the elastic member 23 may be compressed to provide expansion space for the battery core 21 .
  • the elastic member 23 includes foam.
  • the surfaces of the two outermost battery cells 21 of the first column of battery cell groups 20 a are further provided with adhesives 24 , which are bonded to the inner surfaces of the first side wall 112 and the second side wall 113 , so as to facilitate fixing the first column of battery cell groups 20 a in the first shell 11 .
  • the battery cell assembly 20 further includes a second column of battery cell groups 20b, the first column of battery cell groups 20a and the second column of battery cell groups 20b are arranged along the second direction Y, and the first connector 30 is arranged between the first column of battery cell groups 20a and the second column of battery cell groups 20b.
  • the first connector 30 connects the first column of battery cell groups 20a and the second column of battery cell groups 20b, and can simultaneously transfer the heat of the first column of battery cell groups 20a and the second column of battery cell groups 20b to the first connector 30, and quickly dissipate heat through the first channel 30a, the second channel 40a and the third channel 30b.
  • the first connector 30 contacts and connects the first column of battery cell groups 20a and the second column of battery cell groups 20b.
  • the cells 21 of the second cell group 20b have the same structure as the cells 21 of the first cell group 20a.
  • the second cell group 20b includes a plurality of cells 21 stacked along the first direction X, each of which contacts and connects the first connector 30 and the first housing 11.
  • the second column of battery cell group 20b further includes a second heat conductive member 22b, and the second heat conductive member 22b has substantially the same structure as the first heat conductive member 22a.
  • the first connecting member 30 is connected to the first heat conductive member 22a, and the first connecting member 30 is connected to the second heat conductive member 22b, and the first connecting member 30 is located between the first heat conductive member 22a and the second heat conductive member 22b, so as to improve the heat dissipation of the battery cell assembly 20.
  • the battery cell assembly 20 can add more battery cells according to demand, such as a third column of battery cell groups, and the first connecting member 30 is arranged between the second column of battery cell groups 20b and the third column of battery cell groups.
  • a first notch 31 is provided at one end of the first connector 30 connected to the second connector 40.
  • the first notch 31 may be provided in a plurality, and the plurality of first notches 31 are provided at intervals along the first direction X.
  • the projection of the first notch 31 overlaps with the projection of the second channel 40a, and the air in the first channel 30a enters the second channel 40a through the first notch 31, which is conducive to further improving heat dissipation.
  • the projection of the first notch 31 is located within the projection of the second channel 40a.
  • the projection of the first notch 31 overlaps with the projection of the second channel 40a.
  • the plurality of first notches 31 are connected, that is, the first notch 31 is provided as a whole extending along the first direction X.
  • the projection of the second channel 40a is located within the projection of the first notch 31, and the first notch 31 is enlarged, thereby increasing the air volume entering the second channel 40a and improving heat dissipation.
  • first side wall 112 or the second side wall 113 when the first side wall 112 or the second side wall 113 is provided with a first opening 10a, one end of the first channel 30a penetrates one side of the first connecting member 30 and extends along the first direction X, and the other end of the first channel 30a penetrates the first connecting member 30 along a direction opposite to the third direction Z.
  • the first channel 30a and the third channel 30b are arranged at intervals along the third direction Z, and the third channel 30b penetrates the first connecting member 30 along the first direction X.
  • the first side wall 112 and the second side wall 113 are provided with a first opening 10a
  • the first channel 30a penetrates the first connecting member 30 along the first direction X, and penetrates the first connecting member 30 along a direction opposite to the third direction.
  • the first channel 30a and the third channel 30b are arranged at intervals along the third direction Z, and the third channel 30b penetrates the first connecting member 30 along the first direction X.
  • the first channel 30 a penetrates the first connecting member 30 along the third direction Z.
  • the battery pack 100 further includes a heat dissipation assembly 50, which is disposed in the first channel 30a.
  • the heat dissipation assembly 50 can draw external air from the first opening 10a into the first channel 30a, and discharge it from the second opening 10b through the second channel 40a.
  • the battery pack 100 can also be cooled.
  • the heat dissipation assembly 50 cooperates with the external air flow to increase the flow rate of the air in the first channel 30a and the second channel 40a, thereby accelerating the heat dissipation speed, and further enhancing the rapid heat dissipation of the battery pack 100.
  • the heat dissipation assembly 50 can draw external air from the second opening 10b into the second channel 40a, and discharge it from the first opening 10a through the first channel 30a.
  • the battery pack 100 When the battery pack 100 is in a static state, in the absence of natural wind and external air cooling equipment, the battery pack 100 can also be cooled.
  • the heat dissipation assembly 50 cooperates with the external air flow to increase the flow rate of the air in the first channel 30a and the second channel 40a, thereby accelerating the heat dissipation speed, and further improving the rapid heat dissipation of the battery pack 100.
  • the heat dissipation assembly 50 when the first side wall 112 and/or the second side wall 113 are provided with a first opening 10a, the heat dissipation assembly 50 is installed on a side of the first channel 30a close to the first notch 31, which is conducive to reducing the entry of foreign matter into the first channel 30a.
  • the first wall 111 is provided with a first opening 10a
  • the heat dissipation assembly 50 is installed on a side of the first channel 30a away from the first notch 31, which is conducive to the heat dissipation assembly 50 to inhale more air from the first opening 10a.
  • the battery pack 100 further includes a circuit board 60, which is disposed in the housing assembly 10.
  • the circuit board 60 electrically connects the heat dissipation assembly 50 and the battery cell assembly 20, and the heat dissipation assembly 50 can obtain electrical energy from the battery cell assembly 20.
  • the circuit board 60 includes a BMS assembly (Battery Management System), which can read the temperature of the battery cell assembly 20 and control the operation of the heat dissipation assembly 50 according to the temperature of the battery cell assembly 20.
  • the BMS assembly includes a plurality of electronic components, which can realize functions such as data collection, control, protection, communication, power calculation, signal transmission, and power transmission of the battery.
  • the circuit board 60 can control the start and stop of the driver 51.
  • the BMS component is provided with a threshold temperature, which can be set according to the specific battery pack, such as 50°C, 55°C, 60°C, 65°C, 70°C, 75°C, 80°C, etc.
  • a threshold temperature which can be set according to the specific battery pack, such as 50°C, 55°C, 60°C, 65°C, 70°C, 75°C, 80°C, etc.
  • the BMS component gives an instruction to start the heat dissipation assembly 50, and reads the temperature change rate in real time to adjust the rate at which the heat dissipation assembly 50 inhales and exhausts the external air to reduce the temperature of the entire battery pack 100.
  • the BMS component When the read temperature is less than the threshold temperature, the BMS component gives an instruction to turn off the heat dissipation assembly 50.
  • the temperature of the battery cell assembly 20 is read through the BMS component.
  • the BMS component When the read temperature is greater than or equal to the threshold temperature, the BMS component gives an instruction to start the heat dissipation assembly 50, and reads the temperature change rate in real time to adjust the rate at which the heat dissipation assembly 50 inhales and exhausts the external air to reduce the temperature of the entire battery pack 100.
  • the BMS component When the read temperature is less than the threshold temperature, the BMS component gives an instruction to turn off the heat dissipation assembly 50.
  • the heat dissipation assembly 50 includes a driving member 51, the driving member 51 is disposed in the first channel 30a, and the driving member 51 is used to draw the coolant into the first channel 30a or the second channel 40a.
  • the driving member 51 can draw the coolant into the first channel 30a and discharge it from the second channel 40a.
  • the driving member 51 can draw the coolant into the second channel 40a and discharge it from the first channel 30a.
  • the driving member 51 includes a fan.
  • the coolant includes air.
  • the heat dissipation assembly 50 includes a driver 51 and a first wire 52.
  • the first wire 52 is electrically connected to the battery cell assembly 20, and the first wire 52 includes a power wire, and the battery cell assembly 20 can provide electrical energy to the driver 51.
  • the first wire 52 includes a power wire, and the first wire 52 can be electrically connected to an external power source to provide electrical energy to the driver 51.
  • the first wire 52 includes a signal wire, and the first wire 52 is electrically connected to the battery cell assembly 20, and the first wire 52 can obtain electrical signal information such as voltage, temperature, and current of the battery cell assembly 20.
  • the first wire 52 can include both a power wire and a signal wire.
  • the heat dissipation assembly 50 includes a power module that can provide electrical energy to the driver 51, and the power module can store electrical energy. The driver 51 is started or shut down based on the obtained electrical signal information.
  • the first connector 30 is further provided with a through hole 32 communicating with the first channel 30a.
  • the driving member 51 is arranged in the first channel 30a, one end of the first wire 52 is connected to the driving member 51, and the other end extends from the through hole 32 and is connected to the circuit board 60.
  • the heat dissipation component 50 is arranged at the end close to the first notch 31, the first wire 52 extends from the through hole 32, passes through the second connector 40, and is connected to the circuit board 60.
  • the first wire 52 extends from the through hole 32, extends from the gap between the first connector 30 and the first side wall 112 or the gap between the first connector 30 and the second side wall 113 to the side of the second connector 40 away from the first connector 30, and is connected to the circuit board 60.
  • the circuit board 60 controls the rotation speed of the driving member 51 according to the read temperature and the rate of change of the temperature. The faster the rotation speed, the more air is sucked in, which can take away more heat and improve the heat dissipation.
  • the heat dissipation assembly 50 further includes a first structural member 53, the first structural member 53 is arranged in the first channel 30a, and the driving member 51 is arranged in the first structural member 53.
  • the first structural member 53 is a roughly rectangular parallelepiped structure for mounting the driving member 51.
  • the first structural member 53 is provided with a plurality of air outlet holes (not shown) arranged at intervals on one side facing the first notch 31, and air flows to the first notch 31 through the air outlet holes. By providing a plurality of air outlet holes, the aperture of the air outlet holes is reduced, and the risk of sucking debris into the second channel 40a is reduced.
  • the first structural member 53 is also provided with a plurality of air inlet holes (not shown) arranged at intervals on one side away from the first notch 31, and the driving member 51 is arranged between the air inlet hole and the air outlet hole.
  • the first structural member 53 is made of insulating material.
  • the second connector 40 includes a first body 41 and a first side plate 42.
  • the first side plate 42 extends from the edge of the first body 41 along the third direction Z and forms a second space with the first body 41.
  • a first row of protrusions 43 is provided in the second space.
  • the first row of protrusions 43 is connected to the first body 41 and protrudes toward the battery cell 21.
  • the projection of the first row of protrusions 43 is located within the projection of the first side plate 42.
  • a plurality of conductive sheets 411 are provided on one side of the first body 41 away from the first column of protrusions 43.
  • the first body 41 is provided with a plurality of first holes 412 and a plurality of second holes 413 penetrating the first body 41, and the conductive sheet 411 is located between the first holes 412 and the second holes 413.
  • the welding portion 213a of the electrode terminal 213 passes through the first body 41 and is connected to the conductive sheet 411. Specifically, the welding portion 213a of the first terminal 213b passes through the first body 41 through the first hole 412, and the welding portion 213a of the second terminal 213c passes through the first body 41 through the second hole 413.
  • the welding portion 213a of the first terminal 213b and the welding portion 213a of the second terminal 213c are stacked on each other and welded to the conductive sheet 411, and the adjacent battery cells 21 are connected in series.
  • Welding includes laser welding, ultrasonic welding, etc.
  • the welding portion 213a and the conductive sheet 411 can also be connected by other means such as conductive glue.
  • the conductive sheet 411 includes a conductive sheet 4111, and the conductive sheet 4111 is used to electrically connect the first column of battery cell groups 20a and the second column of battery cell groups 20b.
  • adjacent battery cells 21 can be connected in parallel.
  • the first body 41 is further provided with a first electrical connection portion 414 and a second electrical connection portion 415.
  • the first electrical connection portion 414 includes a first conductive portion 4141 and a first insulating portion 4142, the first insulating portion 4142 is sleeved on the first conductive portion 4141, the first conductive portion 4141 extends out of the first insulating portion 4142, one end of the first conductive portion 4141 is connected to the conductive sheet 411, and the other end is connected to the circuit board 60.
  • the second electrical connection portion 415 includes a second conductive portion 4151 and a second insulating portion 4152, the second insulating portion 4152 is sleeved on the second conductive portion 4151, the second conductive portion 4151 extends out of the second insulating portion 4152, one end of the second conductive portion 4151 is connected to another conductive sheet 411, and the other end is connected to the circuit board 60.
  • the electrode terminal 213 connected to the conductive sheet 411 connected to the first conductive portion 4141 and the second conductive portion 4151 has different polarities.
  • the energy of the battery cell 21 is transmitted to the external device through the first electrical connection portion 414 and the second electrical connection portion 415.
  • first electrical connection portion 414 and the second electrical connection portion 415 include a copper busbar.
  • first conductive portion 4141 and the conductive sheet 411 as well as the second conductive portion 4151 and the conductive sheet 411 are an integrated structure.
  • the battery pack 100 is further provided with a sampling harness 416 , and the sampling harness 416 is connected to the circuit board 60 .
  • the sampling harness 416 can collect at least one of the current, voltage, and temperature of the battery cell 21 .
  • the first row of protrusions 43 includes a plurality of first protrusions 431 spaced apart along the first direction X, and each first protrusion 431 extends along the second direction Y.
  • the first protrusion 431 is hollow to form a second channel 40a.
  • One end of the first connecting member 30 is disposed in the second space, one end of the first protrusion 431 is connected to the first channel 30a, and the other end is connected to the second opening 10b.
  • One end of the first protrusion 431 is connected to the first notch 31, and the first protrusion 431 is connected to the third side wall 114. Air enters the first protrusion 431 from the first channel 30a and is discharged in a direction opposite to the second direction Y.
  • hollow means that the interior of the first protrusion 431 is a hollow structure, and the second channel 40a runs through the interior of the first protrusion 431 along the second direction Y.
  • the electrode terminal 213 passes between adjacent first protrusions 431 and extends to the side of the first body 41 away from the first protrusion 431.
  • the projection of the electrode terminal 213 overlaps with the projection of the first protrusion 431.
  • the projection of the electrode terminal 213 is separated from the projection of the first protrusion 431.
  • the distance between adjacent first protrusions 431 along the first direction X is set from small to large, so that the opening between adjacent first protrusions 431 is expanded, which is convenient for the electrode terminal 213 to pass through between adjacent first protrusions 431.
  • the position of the electrode terminal 213 can also be located, which is convenient for the electrode terminal 213 to pass through the first hole 412 and the second hole 413.
  • the first protrusion 431 is roughly a hollow triangular prism structure, which is conducive to the electrode terminal 213 passing through the first hole 412 and the second hole 413.
  • the second connector 40 is further provided with a second row of protrusions 44.
  • the projection of the second row of protrusions 44 overlaps with the projection of the second row of battery cell groups 20b, and the projection of the second row of protrusions 44 is separated from the projection of the first row of battery cell groups 20a.
  • the projection of the first row of protrusions 43 overlaps with the projection of the first row of battery cell groups 20a, and the projection of the first row of protrusions 43 is separated from the projection of the second row of battery cell groups 20b.
  • the second row of protrusions 44 are spaced apart from the first row of protrusions 43 in the second space, and the first connector 30 is disposed between the first row of protrusions 43 and the second row of protrusions 44.
  • the projection of the second row of protrusions 44 overlaps with the projection of the first row of protrusions 43.
  • the second column of protrusions 44 includes a plurality of second protrusions 441 spaced apart along the first direction X, and each second protrusion 441 extends along the second direction Y.
  • the second protrusion 441 is hollow to form a second channel 40a.
  • the projection of the second channel 40a of the second protrusion 441 overlaps with the projection of the second channel 40a of the first protrusion 431, and the first protrusion 431 and the second protrusion 441 are arranged along the second direction Y, so as to facilitate the arrangement of the first column of battery cell groups 20a and the second column of battery cell groups 20b and to assemble them to the second connector 40.
  • One end of the second protrusion 441 is connected to the first notch 31, and the first protrusion 431 is connected to the fourth side wall 115.
  • Part of the air enters the first protrusion 431 from the first channel 30a and is discharged in the direction opposite to the second direction Y, and part of the air enters the second protrusion 441 and is discharged along the second direction Y.
  • hollow means that the interior of the second convex portion 441 is a hollow structure, and the second channel 40a runs through the interior of the second convex portion 441 along the second direction Y.
  • the projection of the second row of protrusions 44 partially overlaps or is separated from the projection of the first row of protrusions 43 .
  • the battery pack 100 further includes a first insulating member 70, which is disposed on a side of the second connector 40 away from the first connector 30, and insulates and protects the conductive sheet 411 and the electrode terminal 213.
  • the first insulating member 70 includes a second body 71 and a second side plate 72 extending from the edge of the second body 71.
  • the projection of the second connector 40 overlaps with the projection of the second body 71, which is conducive to further improving the insulation protection of the conductive sheet 411 and the electrode terminal 213.
  • the projection of the second connector 40 is located within the projection of the second body 71, so that the second body 71 covers the conductive sheet 411 and the electrode terminal 213.
  • the projection of the second side plate 72 overlaps with the projection of the second connector 40, which is conducive to further improving the insulation protection of the conductive sheet 411 and the electrode terminal 213.
  • the projection of the conductive sheet 411 is located within the projection of the second side plate 72.
  • the second body 71 is provided with a fifth opening 711, and the fifth opening 711 penetrates the surface of the second body 71 along the third direction Z.
  • the first electrical connection portion 414 extends to the side of the second body 71 away from the second connector 40 after passing through the fifth opening 711.
  • the second body 71 is provided with a third protrusion 712, and the third protrusion 712 is provided at the edge of the fifth opening 711, and the first electrical connection portion 414 is limited by the third protrusion 712.
  • the portion of the first conductive portion 4141 located outside the first insulating portion 4142 is insulated by the third protrusion 712, thereby reducing the risk of short circuit of the portion of the first conductive portion 4141 located outside the first insulating portion 4142.
  • the projection of the first insulating portion 4142 overlaps with the projection of the third protrusion 712, thereby increasing the length of the third protrusion 712 in the third direction Z, and further improving the insulation of the protruding portion of the first conductive portion 4141.
  • the second body 71 is further provided with a sixth opening 713, and the sixth opening 713 penetrates the surface of the second body 71 along the third direction Z.
  • the second electrical connection portion 415 extends to the side of the second body 71 away from the second connector 40 after passing through the sixth opening 713.
  • the second body 71 is provided with a fourth protrusion 714, and the fourth protrusion 714 is at the edge of the sixth opening 713, and the second electrical connection portion 415 is limited and insulated by the fourth protrusion 714.
  • the portion of the second conductive portion 4151 located outside the second insulating portion 4152 is insulated by the fourth protrusion 714, thereby reducing the risk of short circuit of the portion of the second conductive portion 4151 located outside the second insulating portion 4152.
  • the projection of the second insulating portion 4152 overlaps with the projection of the fourth protrusion 714, thereby increasing the length of the fourth protrusion 714 in the third direction Z, and further improving the insulation of the protruding portion of the second conductive portion 4151.
  • the second body 71 is further provided with a seventh opening 715, and the edge of the seventh opening 715 is provided with a fifth protrusion 716.
  • the sampling harness 416 passes through the second body 71 through the seventh opening 715 and is connected to the circuit board 60.
  • the first wire 52 is connected to the circuit board 60 through the seventh opening 715.
  • the battery pack 100 further includes a first insulating layer 80, which is disposed between the first insulating member 70 and the second connecting member 40, and along the first direction X, the projection of the first insulating layer 80 overlaps with the projection of the electrode terminal 213.
  • the projection of the electrode terminal 213 between the first insulating member 70 and the second connecting member 40 is located within the projection of the first insulating layer 80.
  • the electrode terminal 213 between the first insulating member 70 and the second connecting member 40 is insulated and fixed by the first insulating layer 80.
  • the battery pack 100 further includes a second insulating layer 90, which is disposed between the cell housing 211 and the second connector 40.
  • the projection of the electrode terminal 213 between the cell housing 211 and the second connector 40 is located within the projection of the second insulating layer 90.
  • the electrode terminal 213 between the cell housing 211 and the second connector 40 is further insulated and fixed by the second insulating layer 90.
  • the first insulating layer 80 is formed by curing the battery pack 100 after pouring the first insulating material.
  • the first insulating material includes at least one of a potting glue and a foaming glue.
  • the first insulating layer 80 is formed by pouring the potting glue into the battery pack 100 and curing it.
  • the first insulating layer 80 is formed by foaming the foaming glue.
  • the first insulating material includes a resin, and after the resin is heated and melted, the flowable resin is placed between the first insulating member 70 and the second connecting member 40 by pouring and then cured.
  • the first insulating material includes a resin, which can be cured by a low-pressure injection molding process to form the first insulating layer 80.
  • the first insulating layer 80 fills the gap between the first insulating member 70 and the second connecting member 40, strengthens the insulation protection of the first insulating member 70 and the second connecting member 40, and restricts foreign matter such as water and dust from entering between the first insulating member 70 and the second connecting member 40.
  • the second insulating layer 90 is formed by curing the second insulating material after pouring it into the battery pack 100.
  • the second insulating material includes at least one of a potting glue and a foaming glue.
  • the second insulating layer 90 is formed by pouring a potting glue into the battery pack 100 and curing it.
  • the second insulating layer 90 is formed by foaming the foaming glue.
  • the second insulating material includes a resin, and after the resin is heated and melted, the flowable resin is placed between the second connector 40 and the battery cell housing 211 by pouring and then cured.
  • the second insulating material includes a resin
  • the second insulating layer 90 can be cured by a low-pressure injection molding process.
  • the second insulating layer 90 fills the gap between the second connector 40 and the battery cell housing 211, strengthens the insulation protection of the electrode terminal 213 and the second connector 40, and restricts foreign matter such as water and dust from entering between the second connector 40 and the battery cell housing 211.
  • the foam glue is cured to form the first insulating layer 80 and the second insulating layer 90, which is beneficial to reduce the weight of the battery pack 100 and increase the energy density of the battery pack 100.
  • the potting glue is cured to form the first insulating layer 80 and the second insulating layer 90, which is conducive to better filling the gap and further improving insulation and protection.
  • the first insulating material and the second insulating material can be injected into the battery pack 100 by injection molding, which is conducive to improving production efficiency.
  • a quick-curing insulating material such as quick-drying glue
  • the insulating material is restricted from flowing to other positions of the second body 71 by the third protrusion 712, the fourth protrusion 714 and the fifth protrusion 716.
  • the solidified insulating material seals the fifth opening 711, the sixth opening 713 and the seventh opening 715, and then the battery pack 100 is assembled as shown in FIG.
  • first insulating material that can flow is injected through the glue injection channel, and the first insulating material flows between the battery cell housing 211 and the second connector 40, and can flow between the first insulating member 70 and the second connector 40 through the first hole 412 and the second hole 413.
  • the flowable first insulating material between the first insulating member 70 and the second connecting member 40 is solidified to form a first insulating layer 80, and then the flowable second insulating material is injected through the glue injection channel.
  • the second insulating material between the battery cell housing 211 and the second connecting member 40 is solidified to form a second insulating layer 90.
  • the first wall 111 may not be installed first to form a glue injection channel.
  • a hole may be opened in the first wall 111 to form a glue injection channel.
  • the first insulating material and the second insulating material are the same material, and the flowable first insulating material is injected through the glue injection channel. The first insulating material flows between the battery cell housing 211 and the second connecting member 40, and can flow between the first insulating member 70 and the second connecting member 40 through the first hole 412 and the second hole 413.
  • the flowable first insulating material between the first insulating member 70 and the second connecting member 40 is solidified to form a first insulating layer 80
  • the flowable first insulating material between the battery cell housing 211 and the second connecting member 40 is solidified to form a second insulating layer 90.
  • the first insulating layer 80 and the second insulating layer 90 can be formed by pouring the insulating material once, further simplifying the process.
  • the first insulating material and the second insulating material include foam glue, and the foam glue is cured to form the first insulating layer 80 and the second insulating layer 90, which is beneficial to reducing the weight of the battery pack 100 and improving the energy density of the battery pack 100.
  • the first insulating material and the second insulating material include potting glue, and the potting glue is cured to form the first insulating layer 80 and the second insulating layer 90, which is conducive to better filling the gap and further improving insulation and protection.
  • the first insulating material and the second insulating material may be injected into the battery pack 100 by injection molding, which is beneficial to improving production efficiency.
  • the present application also provides an electric device 200 using the above-mentioned battery pack 100.
  • the electric device 200 of the present application can be, but is not limited to, a drone, a backup power supply, an electric car, an electric motorcycle, an electric power-assisted bicycle, an electric tool, a large household battery, etc.

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  • Electrochemistry (AREA)
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Abstract

本申请的实施例提供了一种电池组和具有该电池组的用电设备，电池组包括壳体组件、电芯组件、第一连接件、第二连接件和散热组件。壳体组件设有第一开口和第二开口。电芯组件容纳于壳体组件。第一连接件设于壳体组件内。第一连接件具有第一通道。第一通道连接第一开口。第二连接件设于壳体组件内。第二连接件具有连通第一通道的第二通道。第二通道连接第二开口。散热组件设于第一通道内。通过在壳体组件设置第一开口和第二开口以及在壳体组件内设置第一通道和第二通道，使空气在第一通道和第二通道内流动，带走电芯组件的热量，提升对电池的散热效率，将散热组件设于第一通道内，进一步提升散热。

Description

电池组和用电设备 技术领域
本申请涉及储能技术领域，尤其涉及一种电池组和用电设备。
背景技术
电池组在使用时，电池组会发出大量的热量，为避免电池组温度过高需要对电池组进行散热，目前传统的散热方式是在电芯间增加散热件，但该散热方式散热速度慢，且对电池组的散热有限，对使用电池组的电池设备也有影响。
发明内容
有鉴于此，有必要提供一种电池组和用电设备，可提升对电池的散热效率。
本申请的实施例提供了一种电池组，包括壳体组件、电芯组件、第一连接件、第二连接件和散热组件。壳体组件设有第一开口和第二开口。电芯组件容纳于壳体组件。第一连接件设于壳体组件内。第一连接件具有第一通道。第一通道连接第一开口。第二连接件设于壳体组件内。第二连接件具有连通第一通道的第二通道。第二通道连接第二开口。散热组件设于第一通道内。通过在壳体组件设置第一开口和第二开口以及在壳体组件内设置第一通道和第二通道，使空气在第一通道和第二通道内流动，带走电芯组件的热量，提升对电池的散热效率，将散热组件设于第一通道内，进一步提升散热。
可选地，在本申请的一些实施例中，散热组件包括驱动件。驱动件设于第一通道内，通过驱动件将冷却剂吸入第一通道或第二通道。
可选地，在本申请的一些实施例中，散热组件包括第一导线。第一导线电连接驱动件和电芯组件。
可选地，在本申请的一些实施例中，第一导线包括动力导线。第一导线可电连接到外部电源，为驱动件提供电能。
可选的，在本申请的一些实施例中，第一导线包括信号导线。第一导线电 连接电芯组件。第一导线可获取电芯组件电压信息、温度信息和电流信息。
可选的，在本申请的一些实施例中，第一导线可同时包括动力导线和信号导线。
可选地，在本申请的一些实施例中，电芯组件的电能通过第一导线传输至驱动件。
可选地，在本申请的一些实施例中，电池组还包括设于壳体组件内电路板。电路板电连接电芯组件和散热组件。电路板可控制驱动件的启动和关闭。
可选地，在本申请的一些实施例中，散热组件还包括第一结构件，驱动件设于第一结构件内。
可选地，在本申请的一些实施例中，第一结构件包括通孔。第一导线穿过通孔后连接于电芯组件。
可选地，在本申请的一些实施例中，壳体组件包括第一壁和连接第一壁的第一侧壁和第二侧壁。第一侧壁和第二侧壁沿第一方向排列设置。第一侧壁和第二侧壁中的至少一个设有第一开口或第一壁设有第一开口。根据电池组的移动方向或外部风冷设备的风向，第一开口可以作为出风口，也可以作为进风口，当第一侧壁和第二侧壁均设置第一开口时，可以增加出风口或进风口的数量，进一步提升散热。
可选地，在本申请的一些实施例中，壳体组件还包括第三侧壁和第四侧壁。第三侧壁连接第一侧壁和第二侧壁。第四侧壁连接第一侧壁和第二侧壁。第三侧壁和第四侧壁沿第二方向排列设置。第二方向垂直于第一方向。第三侧壁和第四侧壁中的至少一个设有第二开口。根据电池组的移动方向或外部风冷设备的风向，第二开口可以作为出风口，也可以作为进风口，当第三侧壁和第四侧壁均设置第二开口时，可以增加出风口或进风口的数量，进一步提升散热。
可选地，在本申请的一些实施例中，第一侧壁和第二侧壁均设有第一开口。第一通道具有第一通孔、第二通孔和第三通孔。第一侧壁上的第一开口通过第一通孔连通第一通道。第二侧壁上的第一开口通过第二通孔连通第一通道。第二通道通过第三通孔连通第一通道。从第一侧壁的第一开口到第二侧壁的第一开口作为一个散热通道，从第一侧壁的第一开口到第二通道作为另一个散热通道，提升散热。
可选地，在本申请的一些实施例中，第一壁设有第一开口。第一通道具有 第一通孔和第二通孔。第一壁上的第一开口通过第一通孔连通第一通道。第一通道和第二通道通过第二通孔连通。
可选地，在本申请的一些实施例中，第一侧壁还设有第三开口。第二侧壁还设有第四开口。第一连接件还设有第三通道。第三通道连接第三开口和第四开口，通过增加第三通道，进一步提升散热。
可选地，在本申请的一些实施例中，第一连接件连接第二连接件的一端设有第一缺口。沿第二方向，第一缺口的投影与第二通道的投影有重叠，通过设置第一缺口将第一通道内的空气传输到第二通道中。
可选地，在本申请的一些实施例中，电芯组件包括第一列电芯组。第一列电芯组包括多个沿第一方向堆叠设置的电芯。电芯包括电芯壳体、设于电芯壳体内的电极组件以及连接至电极组件并且从电芯壳体引出的电极端子。
可选地，在本申请的一些实施例中，电芯组件还包括第二列电芯组，第一列电芯组和第二列电芯组沿第二方向排列设置。第一连接件设于第一列电芯组和第二列电芯组之间，能够同时将第一列电芯组和第二列电芯组的热量传递至第一连接件，并通过第一通道、第二通道和第三通道进行快速散热。
可选地，在本申请的一些实施例中，还包括第一绝缘层和第一绝缘件。第一绝缘件设于第二连接件背离第一连接件的一侧。第一绝缘层设于第一绝缘件和第二连接件之间。沿第一方向，电极端子的投影与第一绝缘层的投影有重叠，通过第一绝缘层对第一绝缘件和第二连接件之间的电极端子进行绝缘以及固定。
可选地，在本申请的一些实施例中，第三侧壁设有灌胶通道，流动的绝缘材料通过灌胶通道注入第一绝缘件和第二连接件之间固化后形成第一绝缘层。
可选地，在本申请的一些实施例中，第一绝缘层包括灌封胶、发泡胶中的至少一种。
可选地，在本申请的一些实施例中，沿第三方向，第一绝缘件的投影与第二连接件的投影有重叠。电极端子的投影位于第一绝缘件的投影内。第三方向垂直于第一方向和第二方向，能够对导电片和电极端子进行绝缘。
可选地，在本申请的一些实施例中，还包括第二绝缘层。第二绝缘层设于电芯壳体和第二连接件之间。第二绝缘层通过将流动的绝缘材料注入电芯壳体和第二连接件之间后固化后形成。通过第二绝缘层对电芯壳体和第二连接件之间电极端子进行进一步的绝缘和固定。
可选地，在本申请的一些实施例中，第二连接件朝向电芯的一侧设有第一列凸部。第一列凸部包括多个沿第一方向间隔设置的第一凸部。每个第一凸部沿第二方向延伸。第一凸部呈中空设置。第一凸部的一端连接第一通道，另一端连接第二开口，通过将第一凸部中空设置作为第二通道。
可选地，在本申请的一些实施例中，电极端子设于相邻的第一凸部之间。沿第一方向，电极端子的投影与第一凸部的投影有重叠。沿第二方向，电极端子的投影与第一凸部的投影相离，通过相邻的第一凸部对电极组件进行限位。
可选地，在本申请的一些实施例中，沿第三方向，相邻的第一凸部沿第一方向之间的距离由小变大设置，使相邻的第一凸部之间的开口呈扩口状，便于电极端子从相邻的第一凸部之间穿过，随着开口逐渐缩小，还能够定位电极端子的位置，便于电极端子穿过第二连接件。
可选地，在本申请的一些实施例中，第二连接件还设有第二列凸部。第一连接件设于第一列凸部和第二列凸部之间。沿第二方向，第一列凸部的投影与第二列凸部的投影重叠。第二列凸部包括中空设置的第二凸部。外部空气沿与第二方向相反的方向从第一凸部排出并沿第二方向从第二凸部排出，通过设置第一凸部和第二凸部，便于空气快速从第二通道排出，加快散热。
本申请一实施例还提供了一种用电设备，包括上述任意实施例中的电池组。
上述的电池组和用电设备通过在壳体组件设置第一开口和第二开口以及在壳体组件内设置第一通道和第二通道，使空气在第一通道和第二通道内流动，带走电芯组件的热量，提升对电池的散热效率，将散热组件设于第一通道内，进一步提升散热。
附图说明
图1示出了一些实施例中电池组的结构示意图。
图2示出了一些实施例中电池组另一视角的结构示意图。
图3示出了一些实施例中电池组又一视角的结构示意图。
图4示出了一些实施例中电池组再一视角的结构示意图。
图5示出了一些实施例中电池组的分解示意图。
图6示出了一些实施例中电池组除去壳体组件的结构示意图。
图7示出了图6的分解示意图。
图8示出了另一些实施例中电池组的结构示意图。
图9示出了一些实施例中电芯组件的结构示意图。
图10示出了一些实施例中电芯的分解示意图。
图11示出了一些实施例中电芯的分解示意图。
图12示出了一些实施例中第一连接件的结构示意图。
图13示出了一些实施例中第一连接件和散热组件的结构示意图。
图14示出了另一些实施例中第一连接件和散热组件的结构示意图。
图15示出了图1中电池组沿II-II的剖面示意图。
图16示出了一些实施例中电路板以及电池组除去壳体组件后的结构示意图。
图17示出了一些实施例中第二连接件的结构示意图。
图18示出了一些实施例中第二连接件的分解示意图。
图19示出了一些实施例中第二连接件的剖面示意图。
图20示出了一些实施例中第二连接件另一视角的结构示意图。
图21示出了图1中电池组沿III-III的剖面示意图。
图22示出了图21IV部分的放大示意图。
图23示出了一些实施例中电池组倒置的结构示意图。
图24示出了另一些实施例中电池组沿III-III的剖面示意图。
图25示出了图24V部分的放大示意图。
图26示出了一些实施例中用电设备的结构示意图。
主要元件符号说明：
电池组                           100
壳体组件                         10
第一开口                         10a
第二开口                         10b
第一壳体                         11
第一壁                           111
第一侧壁                         112
第三开口                         1121
第一连接孔                      1122
第二侧壁                        113
第四开口                        1131
第三侧壁                        114
第四侧壁                        115
第二壳体                        12
翅片                            121
电芯组件                        20
第一列电芯组                    20a
第二列电芯组                    20b
电芯                            21
第一侧面                        21a
第二侧面                        21b
第三侧面                        21c
第四侧面                        21d
电芯壳体                        211
第一部分                        211a
第二部分                        211b
第一外壳                        2111
第二外壳                        2112
第一延伸部                      2113
第二延伸部                      2114
第一密封部                      2115
第二密封部                      2116
电极组件                        212
电极端子                        213
焊接部                          213a
第一端子                        213b
第二端子                        213c
第一导热件                      22a
第二导热件                      22b
弹性件                          23
粘接件                          24
第一连接件                      30
第一通道                        30a
第一通孔                        301
第二通孔                        302
第三通孔                        303
第三通道                        30b
第二连接孔                      30c
第一缺口                        31
通孔                            32
第二连接件                      40
第一主体                        41
导电片                          411
导接片                          4111
第一孔                          412
第二孔                          413
第一电连接部                    414
第一导电部                      4141
第一绝缘部                      4142
第二电连接部                    415
第二导电部                      4151
第二绝缘部                      4152
采样线束                        416
第一侧板                        42
第一列凸部                      43
第一凸部                        431
第二列凸部                      44
第二凸部                        441
散热组件                        50
驱动件                          51
第一导线                        52
第一结构件                      53
电路板                          60
第一绝缘件                      70
第二主体                        71
第五开口                        711
第三凸部                        712
第六开口                        713
第四凸部                        714
第七开口                        715
第五凸部                        716
第二侧板                        72
第一绝缘层                      80
第二绝缘层                      90
第一方向                        X
第二方向                        Y
第三方向                        Z
如下具体实施例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，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。
当一个组件被认为是“设于”另一个组件，它可以是直接设在另一个组件上或者可能同时存在居中的组件。当一个组件被认为是“连接”另一个组件，它可以是直接连接在另一个组件上或者可能同时存在居中的组件。
可以理解，术语“垂直”用于描述两个部件之间的理想状态。实际生产或使用的状态中，两个部件之间可以存在近似于垂直的状态。举例来说，结合数 值描述，垂直可以指代两直线之间夹角范围在90°±10°之间，垂直也可以指代两平面的二面角范围在90°±10°之间，垂直还可以指代直线与平面之间的夹角范围在90°±10°之间。被描述“垂直”的两个部件可以不是绝对的直线、平面，也可以大致呈直线或平面，从宏观来看整体延伸方向为直线或平面即可认为部件为“直线”或“平面”。
除非另有定义，本文术语“多个”在用于描述部件的数量时，具体是指该部件为两个或者两个以上。
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“或/及”包括一个或多个相关的所列项目的任意的和所有的组合。
本申请的实施例提供了一种电池组和具有该电池组的用电设备，电池组包括壳体组件、电芯组件、第一连接件、第二连接件和散热组件。壳体组件设有第一开口和第二开口。电芯组件容纳于壳体组件。第一连接件设于壳体组件内。第一连接件具有第一通道。第一通道连接第一开口。第二连接件设于壳体组件内。第二连接件具有连通第一通道的第二通道。第二通道连接第二开口。散热组件设于第一通道内。通过在壳体组件设置第一开口和第二开口以及在壳体组件内设置第一通道和第二通道，使空气在第一通道和第二通道内流动，带走电芯组件的热量，提升对电池的散热效率，将散热组件设于第一通道内，进一步提升散热。
下面结合附图，对本申请的一些实施方式作详细说明。在不冲突的情况下，下述的实施方式及实施方式中的特征可以相互组合。
请参阅图1至图7，本申请一实施例提供了一种电池组100，包括壳体组件10、电芯组件20、第一连接件30和第二连接件40。壳体组件10设有第一空间，电芯组件20、第一连接件30和第二连接件40均设于第一空间内。壳体组件10设有连通第一空间的第一开口10a和第二开口10b，第一连接件30设有第一通道30a，第一通道30a的一端连通第一开口10a。第二连接件40连接电芯组件20和第一连接件30，第二连接件40设有第二通道40a，第二通道40a连通第一通道30a和第二开口10b。外部空气能够从第一开口10a进入第一通道30a，并流动到第二通道40a，并从第二开口10b排出，或者外部空气能够从第二开口 10b进入第二通道40a，并流动到第一通道30a，并从第一开口10a排出。电芯组件20的热量至少部分传递至第一连接件30，再通过外部空气在第一通道30a和第二通道40a内流动，并散到电池组100外部，从而对电芯组件20进行散热。
在一实施例中，电池组100可以利用外部的空气，通过空气的流动带走电芯组件20的热量。在一实施例中，当电池组100处于静态时，如电池组100在充电时，可以利用自然风或者外部风冷设备进行散热。在一实施例中，电池组100可以用于使用时处于动态的设备上，例如无人机、电动助力车等，由于设备移动时，空气流动速度更快，可以实现电池组100的快速散热。
在一实施例中，壳体组件10包括第一壳体11和第二壳体12，第一壳体11设有第一空间，第二壳体12连接第一壳体11，以封闭第一空间。第一壳体11包括第一壁111、第一侧壁112、第二侧壁113、第三侧壁114和第四侧壁115。第一侧壁112和第二侧壁113均连接第一壁111，且第一侧壁112和第二侧壁113排列设置。第三侧壁114和第四侧壁115均连接第一壁111，且第三侧壁114和第四侧壁115排列设置。第三侧壁114还连接第一侧壁112和第二侧壁113，第四侧壁115还连接第一侧壁112和第二侧壁113，并形成第一空间。第二壳体12连接第一侧壁112、第二侧壁113、第三侧壁114和第四侧壁115。可选的，第一壁111、第一侧壁112、第二侧壁113、第三侧壁114和第四侧壁115可以通过螺丝锁定、焊接或粘接等方式连接成第一壳体11。
在一实施例中，第一壳体11和第二壳体12包含导热材料，可提升散热性能。可选的，导热材料包括金属导热材料和导热的绝缘材料，绝缘材料可覆盖在金属导热材料外表面。可选的，第一壳体11和第二壳体12的金属导热材料包括铝。可选的，第二壳体12的外壁设有翅片121，翅片121沿第二方向Y排列，翅片121能够增加第二壳体12与空气的接触面积，进一步提升散热性能。
为了更好的对电池组100的结构进行说明，将结合X、Y、Z坐标轴对电池组100的结构进行叙述，X、Y、Z坐标轴两两垂直，定义X方向为第一方向，Y方向为第二方向，Z方向为第三方向，其中，第一方向X为第一侧壁112和第二侧壁113排列的方向，第二方向Y为第三侧壁114和第四侧壁115排列的方向，第三方向Z为第二壳体12和第一壁111排列的方向，第一方向X同时垂直于第二方向Y和第三方向Z。
在一实施例中，第一开口10a贯穿第一侧壁112。第二开口10b贯穿第三侧 壁114。第一通道30a连接第一侧壁112上的第一开口10a，第一通道30a连通第二通道40a的一端，第二通道40a连接第三侧壁114上的第二开口10b。当电池组100沿与第一方向X相反的方向移动或外部风冷设备的风向沿第一方向X时，第一开口10a为进风口，第二开口10b为出风口，空气从第一开口10a进入经过第一通道30a，从第一通道30a流动到第二通道40a，并从第二开口10b排出，提升散热。可以理解的是，当电池组100沿与第二方向Y相反的方向移动或外部风冷设备的风向朝向第二方向Y时，第二开口10b为进风口，第一开口10a为出风口。当第一开口10a设于第一侧壁112和第二侧壁113中的一个，且第二开口10b设于第三侧壁114和第四侧壁115中的一个时，可选的，第一开口10a设于第一侧壁112，第二开口10b可以设于第四侧壁115。可选的，第一开口10a设于第一侧壁112，第二开口10b设于第三侧壁114。可选的，第一开口10a可以设于第二侧壁113，第二开口10b可以设于第三侧壁114。可选的，第一开口10a可以设于第二侧壁113，第二开口10b可以设于第四侧壁115。
在一实施例中，第一侧壁112和第二侧壁113均设有第一开口10a，第一开口10a贯穿第一侧壁112，第一开口10a贯穿第二侧壁113。第二开口10b设于第三侧壁114，第二开口10b贯穿第三侧壁114。第一通道30a设有第一通孔301、第二通孔302和第三通孔303，第一通孔301和第二通孔302沿第一方向X排列设置。第一侧壁112上的第一开口10a通过第一通孔301连通第一通道30a，第二侧壁113上的第一开口10a通过第二通孔302连通第一通道30a，第一通道30a与第二通道40a通过第三通孔303连通，第二通道40a连通第三侧壁114上的第二开口10b。当电池组100沿与第一方向X相反的方向移动或外部风冷设备的风向沿第一方向X时，第一侧壁112的第一开口10a为进风口，第二开口10b为出风口，空气从第一侧壁112的第一开口10a进入，部分空气经过第一通道30a，从第一通道30a流动到第二通道40a，并从第二开口10b排出，部分空气从第二侧壁113的第一开口10a排出，通过增加出风口或进风口的数量，进一步提升散热。当电池组100沿与第二方向Y相反的方向移动或外部风冷设备的风向朝向第二方向Y时，第二开口10b为进风口，第一侧壁112上的第一开口10a和第二侧壁113上的第一开口10a均为出风口。当第一侧壁112和第二侧壁113均设有第一开口10a，第二开口10b设置在第三侧壁114和第四侧壁115中的一个时，可选的，第一侧壁112和第二侧壁113均设有第一开口10a， 第二开口10b还可以设于第四侧壁115。
在一实施例中，第一侧壁112设有第一开口10a，第一开口10a贯穿第一侧壁112，第二开口10b设于第三侧壁114，第二开口10b贯穿第三侧壁114，第二开口10b设于第四侧壁115，第二开口10b贯穿第四侧壁115。第一通道30a连接第一开口10a，第一通道30a连通第二通道40a，第二通道40a的一端连通第三侧壁114上的第二开口10b，另一端连通第四侧壁115上的第二开口10b。当电池组100沿与第一方向X相反移动或外部风冷设备的风向沿第一方向X时，第一侧壁112的第一开口10a为进风口，第三侧壁114和第四侧壁115上的第二开口10b为出风口，空气从第一侧壁112的第一开口10a进入，经过第一通道30a，从第一通道30a流动到第二通道40a，部分空气从第三侧壁114的第二开口10b排出，部分空气从第四侧壁115的第二开口10b排出，通过增加出风口，提升出风量，进一步提升散热。当电池组100沿与第二方向Y相反的方向移动或外部风冷设备的风向朝向第二方向Y时，第三侧壁114的第二开口10b为进风口，第一侧壁112上的第一开口10a和第四侧壁115上的第二开口10b均为出风口。当第三侧壁114和第四侧壁115均设有第二开口10b，第一开口10a设置在第一侧壁112和第二侧壁113中的一个时，可选的，第三侧壁114和第四侧壁115均设有第二开口10b，第一开口10a还可以设于第二侧壁113。
在一实施例中，第一侧壁112和第二侧壁113均设有第一开口10a，第一开口10a贯穿第一侧壁112，第一开口10a贯穿第二侧壁113。第三侧壁114和第四侧壁115均设有第二开口10b，第二开口10b贯穿第三侧壁114，第二开口10b贯穿第四侧壁115。第一通道30a设有第一通孔301、第二通孔302和第三通孔303，第一侧壁112上的第一开口10a通过第一通孔301连通第一通道30a，第二侧壁113上的第一开口10a通过第二通孔302连通第一通道30a，第一通道30a与第二通道40a通过第三通孔303连通，第二通道40a连通第三侧壁114上的第二开口10b，第二通道40a连通第四侧壁115上的第二开口10b。当电池组100沿与第一方向X相反的方向移动或外部风冷设备的风向沿第一方向X时，第一侧壁112的第一开口10a为进风口，第二侧壁113上的第一开口10a、第三侧壁114上的第二开口10b和第四侧壁115上的第二开口10b均为出风口，空气从第一侧壁112的第一开口10a进入，部分空气经过第一通道30a，从第一通道30a流动到第二通道40a，并从第三侧壁114上的第二开口10b和第四侧壁 115上的第二开口10b排出，部分空气从第二侧壁113的第一开口10a排出，通过增加出风口，提升出风量，进一步提升散热。当电池组100处于静止时，第一侧壁112上的第一开口10a和第二侧壁113上的第一开口10a均为进风口。当电池组100处于移动时，电池组100沿第一方向X移动时，第二侧壁113上的第一开口10a为进风口，第一侧壁112上的第一开口10a为出风口。电池组100沿与第一方向X相反的方向移动时，第一侧壁112上的第一开口10a为进风口，第二侧壁113上的第一开口10a为出风口。
请参阅图8和图14，在一实施例中，第一开口10a设于第一壁111，第一开口10a贯穿第一壁111，第二开口10b设于第三侧壁114。第一通道30a设有第一通孔301和第二通孔302，第二通孔302和第一通孔301沿第三方向Z排列设置。第一壁111上的第一开口10a通过第一通孔301连通第一通道30a，第二通孔302连通第二通道40a。当电池组100沿第三方向Z移动或外部风冷设备的风向沿第三方向Z相反的方向时，第一壁111上的第一开口10a为进风口，第三侧壁114上的第二开口10b为出风口，空气从第一壁111上的第一开口10a进入，经过第一通道30a，从第一通道30a流动到第二通道40a，从第三侧壁114的第二开口10b排出，提升散热。可选的，第一开口10a设于第一壁111，第二开口10b还可以设于第四侧壁115。可选的，第一开口10a设于第一壁111，第三侧壁114和第四侧壁115还可以均设置第二开口10b。
请参阅图5和图7，在一实施例中，当第一开口10a设于第一侧壁112和\或第二侧壁113时，第一连接件30还设有第三通道30b，第一通道30a与第三通道30b间隔设置且不相互连通。第一侧壁112还设有第三开口1121，第二侧壁113设有第四开口1131，第三开口1121和第四开口1131沿第一方向X排列设置。第三通道30b的一端连接第三开口1121，另一端连接第四开口1131。当电池组100沿第一方向X移动或外部风冷设备的风向沿与第一方向X相反的方向时，空气从第四开口1131进入并从第三开口1121排出。当电池组100沿与第一方向X相反的方向移动或外部风冷设备的风向沿第一方向X时，空气从第三开口1121进入并从第四开口1131排出，通过增加第三通道30b，进一步提升散热。在一实施例中，第一侧壁112上的第一开口10a和第三开口1121沿第三方向Z排列设置，沿第一方向X，第三开口1121的投影面积大于第一开口10a的投影面积，有利于进一步提升散热效果。在一实施例中，第二侧壁113上的 第一开口10a和第四开口1131沿第三方向Z排列设置，沿第一方向X，第四开口1131投影面积大于第一开口10a的投影面积，有利于进一步提升散热效果。
在一实施例中，第一侧壁112和第二侧壁113设有多个第一连接孔1122，第一连接件30沿第一方向X设置的两个侧面均设有多个第二连接孔30c，紧固件(图未示)，如螺丝等，穿过第一连接孔1122和第二连接孔30c，将第一连接件30固定连接在第一侧壁112和第二侧壁113上。
请参阅图7、图9、图10和图11，在一实施例中，电芯组件20包括第一列电芯组20a，第一列电芯组20a包括多个沿第一方向X堆叠设置的电芯21。电芯21包括电芯壳体211、设于电芯壳体211内的电极组件212、以及连接至电极组件212并且从电芯壳体211引出的电极端子213。在一实施例中，电芯壳体211包括第一部分211a和第二部分211b，第一部分211a容纳电极组件212，第二部分211b连接第一部分211a，电极端子213从第二部分211b伸出。
在一实施例中，电芯壳体211包括第一外壳2111和第二外壳2112，第一外壳2111连接第二外壳2112。第一外壳2111和第二外壳2112中的至少一个设有凹部，用以放置电极组件212。第一外壳2111和第二外壳2112沿连接位置(虚线位置)可以进行折叠，使第一外壳2111和第二外壳2112重合，形成第一部分211a，以包覆电极组件212。第一外壳2111的周侧向外延伸形成多个第一延伸部2113，第二外壳2112的周侧向外延伸形成多个第二延伸部2114。第一外壳2111和第二外壳2112沿连接位置折叠后，第一延伸部2113和第二延伸部2114重合连接，形成第二部分211b。可选的，第一延伸部2113和第二延伸部2114通过胶粘接连接。第二部分211b包括第一密封部2115和第二密封部2116，第一密封部2115与连接位置相对设置，电极端子213自第一密封部2115伸出第一部分211a。可选的，第二部分211b包括两个第二密封部2116，两个第二密封部2116沿第二方向Y排列设置。可选的，第二部分211b包括一个第一密封部2115，电芯21包括两个电极端子213，两个电极端子213自第一密封部2115延伸出电芯壳体211。在其他实施例中，第一外壳2111和第二外壳2112非一体设置，第二部分211b包括两个第一密封部2115，两个第一密封部2115沿第三方向Z排列设置，电芯21包括两个电极端子213，其中一个电极端子213自其中一个第一密封部2115延伸出电芯壳体211，另外一个电极端子213自另外一个第一密封部2115延伸出电芯壳体211，两个电极端子213沿第三方向Z 排列设置。
在一实施例中，电极组件212包括由正极片、负极片以及隔离膜卷绕形成的卷绕式结构。在另一些实施例中，电极组件212还可以为叠片结构，正极片、隔离膜和负极片依次层叠形成一个电极组件单元，多个电极组件单元再层叠成电极组件212。可选的，电芯壳体211包括铝塑膜。可选的，电芯21包括软包电芯。
在一实施例中，电极端子213具有延伸出电芯壳体211外的焊接部213a，焊接部213a为电极端子213弯折后形成。相邻的电芯21的电极端子213相向弯折并与第二连接件40连接。在一实施例中，电极端子213包括第一端子213b和第二端子213c，第一端子213b和第二端子213c极性相反，第一端子213b和第二端子213c中的一个为正极端子，另一个为负极端子。沿第三方向Z，电芯21的第一端子213b的焊接部213a的投影与相邻电芯21的第二端子213c的焊接部213a的投影至少部分重叠。相邻电芯21的第一端子213b和第二端子213c相向弯折，且第一端子213b的焊接部213a和第二端子213c的焊接部213a相互堆叠连接设置。通过将相邻电芯21的焊接部213a相互连接设置，将焊接部213a连接第二连接件40，减少加工工艺步骤。
在一实施例中，第一列电芯组20a还包括第一导热件22a，每一电芯21均接触连接至少一第一导热件22a，第一导热件22a接触连接第一壳体11，将电芯21的热量通过第一导热件22a传递至第一壳体11，再通过第一壳体11对电芯21进行散热。可选的，第一导热件22a包括铝片。
在一实施例中，电芯21包括第一侧面21a、第二侧面21b、第三侧面21c和第四侧面21d。第一侧面21a和第二侧面21b沿第二方向Y排列设置。第一侧面21a、第二侧面21b和第三侧面21c均连接第四侧面21d。第三侧面21c与电极端子213在第三方向Z上排列设置。第一导热件22a连接第四侧面21d并弯折后延伸至第一侧面21a、第二侧面21b和第三侧面21c。位于第一侧面21a的第一导热件22a接触连接第三侧壁114，位于第二侧面21b的第一导热件22a接触连接第一连接件30的表面，位于第三侧面21c的第一导热件22a接触连接第一壁111的表面，通过第一导热件22a将电芯21的热量传递至第一连接件30和第一壳体11，再通过第一连接件30和第一壳体11散热出去，进而提升对电芯21的散热效果。在另一实施例中，第一导热件22a直接与第一连接件30接触连 接。
在一实施例中，相邻的第一导热件22a之间还设有弹性件23，电芯21膨胀时，弹性件23可被压缩，为电芯21提供膨胀空间，可选的，弹性件23包括泡棉。
在一实施例中，沿第一方向X，位于第一列电芯组20a最外侧的两个电芯21的表面还设有粘接件24，粘接件24粘接在第一侧壁112和第二侧壁113的内表面，便于将第一列电芯组20a固定于第一壳体11内。
在一实施例中，电芯组件20还包括第二列电芯组20b，第一列电芯组20a与第二列电芯组20b沿第二方向Y设置，第一连接件30设于第一列电芯组20a和第二列电芯组20b之间。第一连接件30连接第一列电芯组20a和第二列电芯组20b，能够同时将第一列电芯组20a和第二列电芯组20b的热量传递至第一连接件30，并通过第一通道30a、第二通道40a和第三通道30b进行快速散热。可选的，第一连接件30接触连接第一列电芯组20a和第二列电芯组20b。
在一实施例中，第二列电芯组20b的电芯21与第一列电芯组20a的电芯21结构相同。第二列电芯组20b包括多个沿第一方向X堆叠设置的电芯21，每一电芯21均接触连接第一连接件30和第一壳体11。
在一实施例中，第二列电芯组20b还包括第二导热件22b，第二导热件22b和第一导热件22a结构基本相同。可选的，第一连接件30连接第一导热件22a，第一连接件30连接第二导热件22b，第一连接件30位于第一导热件22a和第二导热件22b之间，提升对电芯组件20的散热。
可以理解的是，电芯组件20可以根据需求增加更多的电芯，如第三列电芯组，第一连接件30设于第二列电芯组20b和第三列电芯组之间。
请参阅图12、图13、图14、图15和图16，在一实施例中，第一连接件30连接第二连接件40的一端设有第一缺口31，第一缺口31可设置为多个，多个第一缺口31沿第一方向X间隔设置。沿第二方向Y，第一缺口31的投影与第二通道40a的投影有重叠，第一通道30a内的空气通过第一缺口31进入到第二通道40a，有利于进一步提升散热。可选的，第一缺口31的投影位于第二通道40a的投影内。可选的，第一缺口31的投影与第二通道40a的投影重叠。在一实施例中，多个第一缺口31连通，即第一缺口31设置为沿第一方向X延伸的一整个，此时，第二通道40a的投影位于第一缺口31的投影内，增大第一缺口 31，进而增加进入第二通道40a的风量，提升散热。
在一实施例中，当第一侧壁112或第二侧壁113设有第一开口10a时，第一通道30a的一端贯穿第一连接件30的一侧，并沿第一方向X延伸，第一通道30a的另一端沿与第三方向Z相反的方向贯穿第一连接件30。第一通道30a与第三通道30b沿第三方向Z间隔设置，第三通道30b沿第一方向X贯穿第一连接件30。当第一侧壁112和第二侧壁113设有第一开口10a时，第一通道30a沿第一方向X贯穿第一连接件30，并沿与第三方向相反的方向贯穿第一连接件30。第一通道30a与第三通道30b沿第三方向Z间隔设置，第三通道30b沿第一方向X贯穿第一连接件30。
在一实施例中，当第一壁111设有第一开口10a，第一侧壁112和第二侧壁113未设置开口时，第一通道30a沿第三方向Z贯穿第一连接件30。
在一实施例中，电池组100还包括散热组件50，散热组件50设于第一通道30a内，散热组件50能够将外部空气从第一开口10a吸入第一通道30a，经第二通道40a并从第二开口10b排出。当电池组100处于静态，在无自然风和外部风冷设备的情况下，也能够对电池组100进行散热。当电池组处于动态的设备上使用时，散热组件50与外部空气流动配合，能够增加第一通道30a和第二通道40a内空气的流速，进而加快散热速度，进一步提升电池组100的快速散热。
在一实施例中，散热组件50能够将外部空气从第二开口10b吸入第二通道40a，经第一通道30a并从第一开口10a排出。当电池组100处于静态，在无自然风和外部风冷设备的情况下，也能够对电池组100进行散热。当电池组处于动态的设备上使用时，散热组件50与外部空气流动配合，能够增加第一通道30a和第二通道40a内空气的流速，进而加快散热速度，进一步提升电池组100的快速散热。
在一实施例中，当第一侧壁112和\或第二侧壁113设有第一开口10a时，散热组件50安装于第一通道30a内靠近第一缺口31的一侧，有利于减少异物进入第一通道30a。当第一壁111设有第一开口10a时，散热组件50安装于第一通道30a内远离第一缺口31的一侧，有利于散热组件50从第一开口10a吸入更多空气。
在一实施例中，电池组100还包括电路板60，电路板60设于壳体组件10内。电路板60电连接散热组件50和电芯组件20，散热组件50能够从电芯组件 20获取电能。在一实施例中，电路板60包括BMS组件(Battery Management System)，能够读取电芯组件20的温度，并根据电芯组件20的温度控制散热组件50运行。BMS组件包括多个电子元器件，多个电子元器件能够实现对电池的数据采集、控制、保护、通讯、电量计算、信号传输、电能传输等功能。电路板60可控制驱动件51的启动和关闭。BMS组件设有阈值温度，阈值温度可以根据具体的电池组进行设置，如可以为50℃、55℃、60℃、65℃、70℃、75℃、80℃等温度，当电池组100正在处于放电工况时，通过BMS组件读取电芯组件20的温度，当读取的温度大于或等于阈值温度时，BMS组件给出启动散热组件50的指令，并且实时读取温度变化速率相应调整散热组件50吸入和排出外部空气的速率来降低整体电池组100的温度，当读取的温度小于阈值温度时，BMS组件给出关闭散热组件50的指令。当电池组100正在处于充电工况时，通过BMS组件读取电芯组件20的温度，当读取的温度大于或等于阈值温度时，BMS组件给出启动散热组件50的指令，并且实时读取温度变化速率相应调整散热组件50吸入和排出外部空气的速率来降低整体电池组100的温度，当读取的温度小于阈值温度时，BMS组件给出关闭散热组件50的指令。
在一实施例中，散热组件50包括驱动件51，驱动件51设于第一通道30a内，驱动件51用于将冷却剂吸入第一通道30a或第二通道40a。可选的，驱动件51能够将冷却剂吸入第一通道30a内并从第二通道40a排出。可选的，驱动件51能够将冷却剂吸入第二通道40a内并从第一通道30a排出。可选的，驱动件51包括风扇。可选的，冷却剂包括空气。
在一实施例中，散热组件50包括驱动件51和第一导线52。可选的，第一导线52电连接电芯组件20，第一导线52包括动力导线，电芯组件20可为驱动件51提供电能。可选的，第一导线52包括动力导线，第一导线52可电连接到外部电源，为驱动件51提供电能。可选的，第一导线52包括信号导线，第一导线52电连接电芯组件20，第一导线52可获取电芯组件20电压、温度、电流等电信号信息。可选的，第一导线52可同时包括动力导线和信号导线。可选的，散热组件50包括可为驱动件51件提供电能的电源模块，所述电源模块可存储电能。驱动件51依据获得电信号信息的启动或关闭。
在一实施例中，第一连接件30还设有连通第一通道30a的通孔32。驱动件51设于第一通道30a内，第一导线52的一端连接驱动件51，另一端从通孔32 伸出并连接电路板60。当散热组件50设于靠近第一缺口31的一端时，第一导线52从通孔32伸出后，穿过第二连接件40，并连接电路板60。当散热组件50设于远离第一缺口31的一端时，第一导线52从通孔32伸出后，从第一连接件30与第一侧壁112之间的间隙或第一连接件30与第二侧壁113之间的间隙延伸至第二连接件40背离第一连接件30的一侧，并连接电路板60。电路板60根据读取的温度和温度的变化速率控制驱动件51的转速，转速越快，吸入的空气越多，能够带走更多的热量，提升散热。
可选的，散热组件50还包括第一结构件53，第一结构件53设于第一通道30a内，驱动件51设于第一结构件53内。第一结构件53大致为长方体结构，用于安装驱动件51。在一实施例中，第一结构件53朝向第一缺口31的一侧设有多个间隔排列设置的出风孔(图未示)，空气通过出风孔流动到第一缺口31，通过设置多个出风孔，缩小出风孔的孔径，降低将杂物吸入到第二通道40a的风险。在一实施例中，第一结构件53远离第一缺口31的一侧也设有多个间隔排列设置的进风孔(图未示)，驱动件51设于进风孔和出风孔之间。通过设置多个进风孔，缩小进风孔的孔径，降低将杂物吸入的可能性，降低杂物对电池组100的损坏。可选的，第一结构件53由绝缘材料制成。
请参阅图16-图22，在一实施例中，第二连接件40包括第一主体41和第一侧板42，第一侧板42由第一主体41的边缘沿第三方向Z延伸，并与第一主体41形成第二空间。第二空间内设有第一列凸部43，第一列凸部43连接第一主体41并朝向电芯21凸起。沿第一方向X，第一列凸部43的投影位于第一侧板42的投影内。
在一实施例中，第一主体41背离第一列凸部43的一侧设有多个导电片411。第一主体41设有贯穿第一主体41的多个第一孔412和多个第二孔413，导电片411位于第一孔412和第二孔413之间。电极端子213的焊接部213a穿过第一主体41并连接于导电片411。具体的，第一端子213b的焊接部213a通过第一孔412穿过第一主体41，第二端子213c的焊接部213a通过第二孔413穿过第一主体41，第一端子213b的焊接部213a和第二端子213c的焊接部213a相互堆叠后焊接于导电片411，相邻电芯21之间串联连接。焊接包括激光焊接、超声波焊接等。在其他实施例中，焊接部213a与导电片411也可以通过导电胶等其他的连接方式。在一实施例中，导电片411包括导接片4111，导接片4111用 于将第一列电芯组20a和第二列电芯组20b电连接。其他实施例中，相邻电芯21之间可并联连接。
在一实施例中，第一主体41还设有第一电连接部414和第二电连接部415。第一电连接部414包括第一导电部4141和第一绝缘部4142，第一绝缘部4142套设于第一导电部4141，第一导电部4141伸出第一绝缘部4142，第一导电部4141一端连接导电片411，另一端连接电路板60。第二电连接部415包括第二导电部4151和第二绝缘部4152，第二绝缘部4152套设于第二导电部4151，第二导电部4151伸出第二绝缘部4152，第二导电部4151一端连接另一导电片411，另一端连接电路板60。第一导电部4141和第二导电部4151连接的导电片411所连接的电极端子213具有不同的极性。通过第一电连接部414和第二电连接部415将电芯21的能量传递至外部使用设备。可选的，第一电连接部414和第二电连接部415包括铜排。在一实施例中，第一导电部4141和导电片411以及第二导电部4151和导电片411为一体式结构。
在一实施例中，电池组100还设有采样线束416，采样线束416连接电路板60。采样线束416可采集电芯21的电流、电压、温度中的至少一种。
在一实施例中，第一列凸部43包括多个沿第一方向X间隔设置的第一凸部431，每个第一凸部431沿第二方向Y延伸。第一凸部431中空设置，以形成第二通道40a。第一连接件30的一端设于第二空间内，第一凸部431的一端连接第一通道30a，另一端连接第二开口10b。第一凸部431的一端连接第一缺口31，第一凸部431连接于第三侧壁114。空气从第一通道30a进入到第一凸部431内，并沿与第二方向Y相反的方向排出。可以理解的是，中空指的是第一凸部431的内部为空心结构，第二通道40a沿第二方向Y贯穿第一凸部431内部。
在一实施例中，电极端子213从相邻的第一凸部431之间穿过并延伸到第一主体41背离第一凸部431的一侧。沿第一方向X，电极端子213的投影与第一凸部431的投影有重叠。沿第二方向Y，电极端子213的投影与第一凸部431的投影相离。在一实施例中，沿第三方向Z，相邻的第一凸部431沿第一方向X之间的距离由小变大设置，使相邻的第一凸部431之间的开口呈扩口状，便于电极端子213从相邻的第一凸部431之间穿过，随着开口逐渐缩小，还能够定位电极端子213的位置，便于电极端子213穿过第一孔412和第二孔413。在一实施例中，第一凸部431大致为中空的三棱柱结构，有利于电极端子213穿 过第一孔412和第二孔413。
在一实施例中，第二连接件40还设有第二列凸部44，沿第三方向Z，第二列凸部44的投影与第二列电芯组20b的投影有重叠，第二列凸部44的投影与第一列电芯组20a的投影相离。第一列凸部43的投影与第一列电芯组20a的投影有重叠，第一列凸部43的投影与第二列电芯组20b的投影相离。第二列凸部44与第一列凸部43间隔设于第二空间内，第一连接件30设于第一列凸部43和第二列凸部44之间。沿第二方向Y，第二列凸部44的投影与第一列凸部43的投影重叠。
在一实施例中，第二列凸部44包括多个沿第一方向X间隔设置的第二凸部441，每个第二凸部441沿第二方向Y延伸。第二凸部441中空设置，以形成第二通道40a。沿第二方向Y，第二凸部441的第二通道40a的投影与第一凸部431的第二通道40a的投影重叠，第一凸部431和第二凸部441沿第二方向Y排列，便于第一列电芯组20a和第二列电芯组20b排列以及组装到第二连接件40。第二凸部441的一端连接第一缺口31，第一凸部431连接于第四侧壁115。空气从第一通道30a部分进入到第一凸部431内，并沿与第二方向Y相反的方向排出，部分进入到第二凸部441内并沿第二方向Y排出，通过设置第一凸部431和第二凸部441，便于空气快速从第二通道40a排出，加快散热。可以理解的是，中空指的是第二凸部441的内部为空心结构，第二通道40a沿第二方向Y贯穿第二凸部441内部。
在另一实施例中，沿第二方向Y，第二列凸部44的投影与第一列凸部43的投影部分重叠或相离。
请参阅图6、图7、图23、图24和图25。在一实施例中，电池组100还包括第一绝缘件70，第一绝缘件70设于第二连接件40背离第一连接件30的一侧，对导电片411和电极端子213进行绝缘保护。第一绝缘件70包括第二主体71和由第二主体71的边缘延伸的第二侧板72。沿第三方向Z，第二连接件40的投影与第二主体71的投影有重叠，有利于进一步提升对导电片411和电极端子213进行绝缘保护。可选的，第二连接件40的投影位于第二主体71的投影内，使第二主体71覆盖导电片411和电极端子213。沿第一方向X或第二方向Y，第二侧板72的投影与第二连接件40的投影有重叠，有利于进一步提升对导电片411和电极端子213进行绝缘保护。进一步的，沿第一方向X或第二方向 Y，导电片411的投影均位于第二侧板72的投影内。
在一实施例中，第二主体71设有第五开口711，沿第三方向Z，第五开口711贯穿第二主体71的表面。第一电连接部414穿过第五开口711后延伸到第二主体71远离第二连接件40的一侧。可选的，第二主体71设有第三凸部712，第三凸部712设于第五开口711的边缘，通过第三凸部712对第一电连接部414进行限位。通过第三凸部712对第一导电部4141位于第一绝缘部4142外的部分进行绝缘，降低第一导电部4141位于第一绝缘部4142外的部分发生短路的风险。可选的，沿第二方向Y，第一绝缘部4142的投影与第三凸部712的投影有重叠，增加第三凸部712在第三方向Z上的长度，进一步提升对第一导电部4141伸出部分的绝缘。
在一实施例中，第二主体71还设有第六开口713，沿第三方向Z，第六开口713贯穿第二主体71的表面。第二电连接部415穿过第六开口713后延伸到第二主体71远离第二连接件40的一侧。可选的，第二主体71设有第四凸部714，第四凸部714于第六开口713的边缘，通过第四凸部714对第二电连接部415进行限位以及绝缘。通过第四凸部714对第二导电部4151位于第二绝缘部4152外的部分进行绝缘，降低第二导电部4151位于第二绝缘部4152外的部分发生短路的风险。可选的，沿第二方向Y，第二绝缘部4152的投影与第四凸部714的投影有重叠，增加第四凸部714在第三方向Z上的长度，进一步提升对第二导电部4151伸出部分的绝缘。
在一实施例中，第二主体71还设有第七开口715，第七开口715的边缘设有第五凸部716。采样线束416通过第七开口715穿过第二主体71，并连接电路板60。在一实施例中，第一导线52通过第七开口715连接电路板60。
在一实施例中，电池组100还包括第一绝缘层80，第一绝缘层80设于第一绝缘件70和第二连接件40之间，沿第一方向X，第一绝缘层80的投影与电极端子213的投影有重叠。可选的，沿第一方向X，第一绝缘件70和第二连接件40之间的电极端子213的投影位于第一绝缘层80的投影内。通过第一绝缘层80对第一绝缘件70和第二连接件40之间的电极端子213进行绝缘以及固定。
在一实施例中，电池组100还包括第二绝缘层90，第二绝缘层90设于电芯壳体211和第二连接件40之间。沿第一方向X，电芯壳体211和第二连接件40之间电极端子213的投影位于第二绝缘层90的投影内。通过第二绝缘层90对 电芯壳体211和第二连接件40之间电极端子213进行进一步的绝缘和固定。
在一实施例中，第一绝缘层80由第一绝缘材料灌注于电池组100后固化形成。可选的，第一绝缘材料包含灌封胶、发泡胶中的少一种。可选的，第一绝缘层80通过将灌封胶灌注于电池组100后固化形成。可选的，第一绝缘层80通过发泡胶发泡形成。可选的，第一绝缘材料包括树脂，将树脂加热融化后，通过灌注的方式将可流动的树脂设于第一绝缘件70和第二连接件40之间后固化形成，可选的，第一绝缘材料包含树脂，可通过低压注塑工艺固化形成第一绝缘层80。第一绝缘层80填充第一绝缘件70和第二连接件40之间的间隙，加强第一绝缘件70和第二连接件40的绝缘保护，限制水、灰尘等异物进入第一绝缘件70和第二连接件40之间。
在一实施例中，第二绝缘层90由第二绝缘材料灌注于电池组100后固化形成。可选的，第二绝缘材料包含灌封胶、发泡胶的至少一种。可选的，第二绝缘层90通过将灌封胶灌注于电池组100后固化形成。可选的，第二绝缘层90通过发泡胶发泡形成。可选的，第二绝缘材料包含树脂，将树脂加热融化后，通过灌注的方式将可流动的树脂设于第二连接件40和电芯壳体211之间后固化形成。可选的，第二绝缘材料包含树脂，可通过低压注塑工艺固化形成第二绝缘层90。第二绝缘层90填充第二连接件40和电芯壳体211之间的间隙，加强电极端子213和第二连接件40的绝缘保护，限制水、灰尘等异物进入第二连接件40和电芯壳体211之间。
在一实施例中，当第一绝缘材料和第二绝缘材料为发泡胶时，采用发泡胶固化形成第一绝缘层80和第二绝缘层90，有利于减轻电池组100的重量，提供电池组100的能量密度。
在另一实施例中，当第一绝缘材料和第二绝缘材料为灌封胶时，采用灌封胶固化形成第一绝缘层80和第二绝缘层90，有利于更好的填充间隙，进一步提升绝缘和保护。
在其他实施例中，第一绝缘材料和第二绝缘材料可采用注塑的方式注入电池组100内，有利于提供生产效率。在一实施例中，首先在第五开口711、第六开口713和第七开口715内注入可快速固化的快干绝缘材料，比如快干胶，通过第三凸部712、第四凸部714和第五凸部716限制绝缘材料流动到第二主体71的其他位置，固化的绝缘材料封闭第五开口711、第六开口713和第七开口 715，然后将电池组100组装成图23所示并进行倒置，然后通过灌胶通道注入可流动的第一绝缘材料，第一绝缘材料流动到电芯壳体211和第二连接件40之间，并可通过第一孔412和第二孔413流动到第一绝缘件70和第二连接件40之间。第一绝缘件70和第二连接件40之间的可流动的第一绝缘材料固化后形成第一绝缘层80，然后通过灌胶通道注入可流动的第二绝缘材料，第二绝缘材料电芯壳体211和第二连接件40之间的固化后形成第二绝缘层90。可选的，将电池组100倒置时，可先不安装第一壁111，形成灌胶通道。可选的，将电池组100倒置时，可在第一壁111开孔形成灌胶通道。可选的，第一绝缘材料和第二绝缘材料为同一种材料，通过灌胶通道注入可流动的第一绝缘材料，第一绝缘材料流动到电芯壳体211和第二连接件40之间，并可通过第一孔412和第二孔413流动到第一绝缘件70和第二连接件40之间。第一绝缘件70和第二连接件40之间的可流动的第一绝缘材料固化后形成第一绝缘层80，电芯壳体211和第二连接件40之间的可流动的第一绝缘材料固化后形成第二绝缘层90，如此，通过一次灌注绝缘材料可形成第一绝缘层80和第二绝缘层90，进一步简化工艺。
在一实施例中，第一绝缘材料和第二绝缘材料包括发泡胶，采用发泡胶固化形成第一绝缘层80和第二绝缘层90，有利于减轻电池组100的重量，提供电池组100的能量密度。
在一实施例中，第一绝缘材料和第二绝缘材料包括灌封胶，采用灌封胶固化形成第一绝缘层80和第二绝缘层90，有利于更好的填充间隙，进一步提升绝缘和保护。
在一实施例中，第一绝缘材料和第二绝缘材料可采用注塑的方式注入电池组100内，有利于提供生产效率。
请参阅图26，本申请还提供一种采用上述电池组100的用电设备200。在一实施方式中，本申请的用电设备200可以是，但不限于无人机、备用电源、电动汽车、电动摩托车、电动助力自行车、电动工具、家庭用大型蓄电池等。
本技术领域的普通技术人员应当认识到，以上的实施例仅是用来说明本申请，而并非用作为对本申请的限定，只要在本申请的实质精神范围内，对以上实施例所作的适当改变和变化都落在本申请公开的范围内。

Claims (24)

  1. 一种电池组，其特征在于，包括：
    壳体组件，设有第一开口和第二开口；
    电芯组件，容纳于所述壳体组件；
    第一连接件，设于所述壳体组件内，所述第一连接件具有第一通道，所述第一通道连接所述第一开口；
    第二连接件，设于所述壳体组件内，所述第二连接件具有与所述第一通道连通的第二通道，所述第二通道连接所述第二开口；
    散热组件，所述散热组件设于所述第一通道内。
  2. 如权利要求1所述的电池组，其特征在于，所述散热组件包括驱动件，所述驱动件设于所述第一通道内。
  3. 如权利要求2所述的电池组，其特征在于，所述散热组件包括第一导线，所述第一导线电连接所述驱动件和所述电芯组件。
  4. 如权利要求3所述的电池组，其特征在于，所述电芯组件的电能通过所述第一导线传输至所述驱动件。
  5. 如权利要求2所述的电池组，其特征在于，所述电池组还包括设于所述壳体组件内电路板，所述电路板电连接所述电芯组件和所述散热组件，所述电路板可控制所述驱动件的启动和关闭。
  6. 如权利要求3所述的电池组，其特征在于，所述散热组件还包括第一结构件，所述驱动件设于所述第一结构件内。
  7. 如权利要求6所述的电池组，其特征在于，所述第一结构件包括通孔，所述第一导线穿过所述通孔后连接于所述电芯组件。
  8. 如权利要求1所述的电池组，其特征在于，所述壳体组件包括第一壁和连接于所述第一壁的第一侧壁和第二侧壁，所述第一侧壁和所述第二侧壁沿第一方向排列设置，所述第一侧壁和所述第二侧壁中的至少一个设有所述第一开口。
  9. 如权利要求8所述的电池组，其特征在于，所述壳体组件还包括第三侧壁和第四侧壁，所述第三侧壁连接所述第一侧壁和所述第二侧壁，所述第四侧壁连接所述第一侧壁和所述第二侧壁，所述第三侧壁和所述第四侧壁沿第二方向排列设置，所述第二方向垂直于所述第一方向， 所述第三侧壁和所述第四侧壁中的至少一个设有所述第二开口。
  10. 如权利要求9所述的电池组，其特征在于，所述第一侧壁和所述第二侧壁均设有所述第一开口，所述第一通道具有第一通孔、第二通孔和第三通孔，所述第一侧壁上的第一开口通过所述第一通孔连通所述第一通道，所述第二侧壁上的第一开口通过所述第二通孔连通所述第一通道，所述第二通道通过所述第三通孔连通所述第一通道。
  11. 如权利要求1所述的电池组，其特征在于，所述壳体组件包括第一壁，所述第一壁设有所述第一开口，所述第一通道具有第一通孔和第二通孔，所述第一壁上的第一开口通过所述第一通孔连通所述第一通道，所述第一通道和所述第二通道通过所述第二通孔连通。
  12. 如权利要求9所述的电池组，其特征在于，所述第一侧壁还设有第三开口，所述第二侧壁还设有第四开口，所述第一连接件还设有第三通道，所述第三通道连接所述第三开口和所述第四开口。
  13. 如权利要求9所述的电池组，其特征在于，所述第一连接件连接所述第二连接件的一端设有第一缺口，沿所述第二方向，所述第一缺口的投影与所述第二通道的投影有重叠。
  14. 如权利要求9所述的电池组，其特征在于，所述电芯组件包括第一列电芯组，所述第一列电芯组包括多个沿所述第一方向堆叠设置的电芯，所述电芯包括电芯壳体、设于所述电芯壳体内的电极组件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。
  15. 如权利要求14所述的电池组，其特征在于，所述电芯组件还包括第二列电芯组，所述第一列电芯组和所述第二列电芯组沿所述第二方向排列设置，沿所述第二方向，所述第一连接件设于所述第一列电芯组和所述第二列电芯组之间。
  16. 如权利要求14所述的电池组，其特征在于，还包括第一绝缘层和第一绝缘件，所述第一绝缘件设于所述第二连接件背离所述第一连接件的一侧，所述第一绝缘层设于所述第一绝缘件和所述第二连接件之间，沿所述第一方向，所述电极端子的投影与所述第一绝缘层的投影有重叠。
  17. 如权利要求16所述的电池组，其特征在于，所述第一绝缘层通过将流 动的绝缘材料注入所述第一绝缘件和第二连接件之间固化后形成。
  18. 如权利要求16所述的电池组，其特征在于，所述第一绝缘层包括灌封胶、发泡胶中的至少一种。
  19. 如权利要求16所述的电池组，其特征在于，沿第三方向，所述第一绝缘件的投影与所述第二连接件的投影有重叠，所述电极端子的投影位于所述第一绝缘件的投影内，所述第三方向垂直于所述第一方向和所述第二方向。
  20. 如权利要求14所述的电池组，其特征在于，还包括第二绝缘层，所述第二绝缘层设于所述电芯壳体和第二连接件之间，所述第二绝缘层通过将流动的绝缘材料注入所述电芯壳体和第二连接件之间后固化后形成。
  21. 如权利要求14所述的电池组，其特征在于，所述第二连接件朝向所述电芯的一侧设有第一列凸部，所述第一列凸部包括多个沿所述第一方向间隔设置的第一凸部，每个所述第一凸部沿所述第二方向延伸，所述第一凸部呈中空设置，所述第一凸部的一端连接所述第一通道，另一端连接所述第二开口。
  22. 如权利要求21所述的电池组，其特征在于，所述电极端子设于相邻的所述第一凸部之间，沿所述第一方向，所述电极端子的投影与所述第一凸部的投影有重叠，沿所述第二方向，所述电极端子的投影与所述第一凸部的投影相离。
  23. 如权利要求21所述的电池组，其特征在于，所述第二连接件还设有第二列凸部，所述第一连接件设于所述第一列凸部和所述第二列凸部之间，沿所述第二方向，所述第一列凸部的投影与所述第二列凸部的投影重叠，所述第二列凸部包括中空设置的第二凸部，外部空气沿与所述第二方向相反的方向从所述第一凸部排出并沿所述第二方向从所述第二凸部排出。
  24. 一种用电设备，其特征在于，包括如权利要求1-23任意一项所述的电池组。
PCT/CN2022/128756 2022-10-31 2022-10-31 电池组和用电设备 WO2024092448A1 (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090208828A1 (en) * 2005-06-17 2009-08-20 Nec Corporation Electric device assembly and film-covered electric device structure
CN104779355A (zh) * 2013-11-29 2015-07-15 法雷奥热系统公司 整合有与模块的端子相接触的热交换器的电池模块
CN107437594A (zh) * 2016-05-27 2017-12-05 宁德时代新能源科技股份有限公司 电池包
CN214797561U (zh) * 2021-01-29 2021-11-19 东莞新能安科技有限公司 一种电池包及用电设备
CN114069126A (zh) * 2021-11-22 2022-02-18 东莞新能安科技有限公司 电池包、电池包系统及用电设备
CN114094244A (zh) * 2021-11-22 2022-02-25 东莞新能安科技有限公司 电池组及用电设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090208828A1 (en) * 2005-06-17 2009-08-20 Nec Corporation Electric device assembly and film-covered electric device structure
CN104779355A (zh) * 2013-11-29 2015-07-15 法雷奥热系统公司 整合有与模块的端子相接触的热交换器的电池模块
CN107437594A (zh) * 2016-05-27 2017-12-05 宁德时代新能源科技股份有限公司 电池包
CN214797561U (zh) * 2021-01-29 2021-11-19 东莞新能安科技有限公司 一种电池包及用电设备
CN114069126A (zh) * 2021-11-22 2022-02-18 东莞新能安科技有限公司 电池包、电池包系统及用电设备
CN114094244A (zh) * 2021-11-22 2022-02-25 东莞新能安科技有限公司 电池组及用电设备

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