WO2024113930A1 - 电池包及用电设备 - Google Patents

电池包及用电设备 Download PDF

Info

Publication number
WO2024113930A1
WO2024113930A1 PCT/CN2023/110472 CN2023110472W WO2024113930A1 WO 2024113930 A1 WO2024113930 A1 WO 2024113930A1 CN 2023110472 W CN2023110472 W CN 2023110472W WO 2024113930 A1 WO2024113930 A1 WO 2024113930A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery cell
bracket
along
battery
cell assembly
Prior art date
Application number
PCT/CN2023/110472
Other languages
English (en)
French (fr)
Inventor
李坤龙
农文彬
王鹏飞
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
Publication of WO2024113930A1 publication Critical patent/WO2024113930A1/zh

Links

Classifications

    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • 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
    • 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
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of energy storage technology, and in particular to a battery pack and electrical equipment.
  • the battery pack will generate heat during use, and a heat sink is needed to regulate the temperature.
  • a heat sink is needed to regulate the temperature.
  • An embodiment of the present application provides a battery pack, including a housing, a first battery cell assembly, a second battery cell assembly, and a heat sink.
  • the first battery cell assembly is disposed in the housing, the first battery cell assembly includes a first battery cell and a first bracket, and the first bracket is bonded to the surface of the first battery cell.
  • the second battery cell assembly is disposed in the housing, the first battery cell assembly and the second battery cell assembly are stacked along a first direction, the second battery cell assembly includes a second battery cell and a second bracket, the second bracket is bonded to the surface of the second battery cell, the second bracket is connected to the first bracket, and a gap is formed between the first battery cell assembly and the second battery cell assembly.
  • the heat sink is disposed in the housing and in the gap.
  • the battery pack is connected via a first bracket and a second bracket, and the heat sink is disposed in a gap between the first battery cell assembly and the second battery cell assembly, which helps to reduce the risk of damage due to squeezing of the battery cell assembly.
  • first bracket and the second bracket are connected by abutment, which is beneficial to improve the stability of the connection between the first battery cell assembly and the second battery cell assembly and improve the vibration resistance of the battery pack.
  • one of the first bracket and the second bracket is provided with a convex portion, and the other is provided with a concave portion, the convex portion is plugged into the concave portion, the heat sink is provided with a first through hole, and at least a portion of the convex portion and/or at least a portion of the concave portion is accommodated in the first through hole.
  • the first bracket and the second bracket are connected in a limited position by plugging the convex portion and the concave portion into each other, which is beneficial to improving the connection stability of the first bracket and the second bracket and improving the vibration resistance of the battery pack.
  • At least a portion of the convex portion and/or the concave portion is accommodated in the first through hole.
  • the hole is helpful to reduce the influence of the interaction force between the first bracket and the second bracket on the heat sink, and reduce the risk of the interaction force between the first bracket and the second bracket damaging the heat sink.
  • At least part of the protrusion is arranged in the recessed portion, so that a gap is formed between the first battery cell assembly and the second battery cell assembly; along the first direction, the length of the heat sink is less than or equal to the length of the gap, which is beneficial to further reduce the influence of the interaction force between the first bracket and the second bracket on the heat sink, and reduce the risk of damaging the heat sink by the interaction force between the first bracket and the second bracket.
  • the first bracket covers at least part of both sides of the first battery cell along the first direction, which is conducive to protecting at least part of both sides of the first battery cell along the first direction, reducing the risk of damage to the first battery cell.
  • the second bracket covers at least part of both sides of the second battery cell along the first direction, which is conducive to protecting at least part of both sides of the second battery cell along the first direction, reducing the risk of damage to the second battery cell.
  • the first battery cell includes a first shell, a first electrode assembly and a first electrode terminal, the first electrode assembly is disposed inside the first shell, the first electrode terminal is connected to the first electrode assembly and extends out of the first shell, the first shell includes a first main body and a first edge sealing portion, the first edge sealing portion is connected to the first main body, the first electrode assembly is disposed inside the first main body, the first electrode terminal extends from the first edge sealing portion, and the first bracket covers at least part of the first edge sealing portion, which is beneficial to protect at least part of the first edge sealing portion and reduce the risk of damage to the first shell.
  • the first bracket covers at least a portion of the first main body, which helps to protect at least a portion of the first main body and reduce the risk of damage to the first main body.
  • the first edge sealing portion includes a first side sealing portion and a first top sealing portion connected to each other, the first electrode terminal extends from the first top sealing portion, and the first bracket covers at least part of the first side sealing portion and the first top sealing portion.
  • one of the first bracket and the second bracket is provided with a convex portion, and the other is provided with a concave portion, and the convex portion is provided in the concave portion.
  • the projection of the convex portion overlaps with the projection of the first main body portion, which is beneficial to reduce the influence of the interaction force between the first bracket and the second bracket on the first top sealing portion when the first bracket is connected to the second bracket, and reduce the influence on the first electrode terminal.
  • the heat sink is connected to the first battery cell assembly and the second battery cell assembly, which is beneficial to improve the heat dissipation of the first battery cell assembly and the second battery cell assembly and reduce the impact of heat on the first battery cell assembly and the second battery cell assembly.
  • first battery cell assemblies there are multiple first battery cell assemblies, and the multiple first battery cell assemblies are stacked along the second direction, and the second direction is perpendicular to the first direction; there are multiple second battery cell assemblies, and the multiple second battery cell assemblies are stacked along the second direction; along the first direction, a first battery cell assembly and a second battery cell assembly are arranged, and the first bracket of the first battery cell assembly is connected to the second bracket of the second battery cell assembly.
  • two adjacent first brackets are connected to each other, and/or two adjacent second brackets are connected to each other, which is beneficial to improving the stability of the connection between adjacent first brackets and/or second brackets, and further improving the seismic performance.
  • the first bracket further includes a first stopper and a second stopper.
  • the first stopper and the second stopper are respectively located on both sides of the first bracket along the second direction, the second direction is perpendicular to the first direction, and the first stopper and the second stopper are respectively extended outwardly away from each other along the second direction; along the second direction, two adjacent first brackets are abutted by the first stopper and/or the second stopper, which is beneficial to improve the stability of the connection between the two adjacent first battery core assemblies and further improve the anti-seismic performance.
  • the second bracket also includes a third stopper and a fourth stopper, the third stopper and the fourth stopper are respectively located on both sides of the second bracket along the second direction, and the third stopper and the fourth stopper are respectively extended outwardly away from each other along the second direction; along the second direction, two adjacent second brackets are abutted by the third stopper and/or the fourth stopper, which is beneficial to improve the stability of the connection between the two adjacent second battery core assemblies and further improve the anti-seismic performance.
  • the first stop portion is provided with a first opening, and when observed along the third direction, at least a portion of the first opening is exposed to the second stop portion, and the first opening is allowed to pass through by a coolant to form a heat dissipation channel, which is beneficial to heat dissipation; and/or, the second stop portion is provided with a second opening, and when observed along the third direction, at least a portion of the second opening is exposed to the first stop portion, and the second opening is allowed to pass through by a coolant to form a heat dissipation channel, which is beneficial to heat dissipation.
  • a first battery cell includes a first shell, a first electrode terminal and a third electrode terminal, and the first electrode terminal and the third electrode terminal extend from opposite sides of the first shell to the first shell respectively;
  • a first battery cell assembly includes a plurality of first batteries, and the plurality of first batteries are arranged along a third direction, and in two adjacent first batteries along the third direction, the first electrode terminal of one first battery cell and the third electrode terminal of another first battery cell are connected to form a first connection area, and the first bracket covers at least part of the first connection area and at least part of the first shell of the two adjacent first batteries, and the third direction is perpendicular to the first direction.
  • a second battery cell includes a second shell, a second electrode terminal and a fourth electrode terminal, and the second electrode terminal and the fourth electrode terminal extend from opposite sides of the second shell to the second shell respectively;
  • a second battery cell assembly includes a plurality of second batteries, and the plurality of second batteries are arranged along a third direction, and in two adjacent second batteries along the third direction, the second electrode terminal of one second battery cell and the fourth electrode terminal of another second battery cell are connected to form a second connection area, and the second bracket covers at least part of the second connection area and at least part of the second shell of the two adjacent second batteries.
  • the first bracket covers a portion of the first connection region to form a first channel penetrating along the first direction
  • the second bracket covers a portion of the second connection region to form a second channel penetrating along the first direction.
  • the first channel and the second channel are beneficial to increasing the surface area of the first bracket and the second bracket, increasing the heat dissipation area, and also forming a heat dissipation channel for the coolant to pass through, thereby improving the heat dissipation of the first battery cell assembly and the second battery cell assembly.
  • the housing is provided with a second through hole and a third through hole; the first channel is connected to the second through hole and the third through hole, and/or the second channel is connected to the second through hole and the third through hole.
  • the coolant outside the battery pack passes through the first channel and/or the second channel through the second through hole and the three through holes, further improving the heat dissipation effect of the first bracket and/or the second bracket, and improving the heat dissipation of the first battery cell assembly and the second battery cell assembly.
  • the first bracket is formed on at least a portion of the surface of the first battery cell by a perfusion process
  • the second bracket is formed on at least a portion of the surface of the second battery cell by a perfusion process. surface.
  • An embodiment of the present application further provides an electrical device, comprising the battery pack described in any of the above embodiments.
  • the first battery cell assembly and the second battery cell assembly form a gap, and the heat sink is arranged in the gap, which is beneficial to reduce the damage to the heat sink between the first battery cell assembly and the second battery cell assembly due to extrusion, and is beneficial to increase the service life of the battery pack and reduce the impact of the battery pack service life on the electrical equipment.
  • FIG. 1 is a schematic diagram of the structure of a battery pack in one embodiment of the present application.
  • FIG. 2 is an exploded view of the battery pack shown in FIG. 1 .
  • FIG. 3 is a first view of a stack of a first battery cell assembly, a second battery cell assembly, and a heat sink in one embodiment of the present application.
  • FIG. 4 is a schematic diagram of the structure of a first battery cell in an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a plurality of first battery cells arranged along a third direction in one embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a first bracket covering a portion of the surface of the structure shown in FIG. 5 in one embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an extended embodiment of the structure shown in FIG. 5 .
  • FIG8 is a schematic structural diagram of a first bracket covering a portion of the surface of the structure shown in FIG7 in one embodiment of the present application.
  • FIG. 9 is a schematic diagram of the structure of a second battery cell in an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a plurality of second battery cells arranged along a third direction in one embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a second bracket covering a portion of the surface of the structure shown in FIG. 10 in one embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of an extended embodiment of the structure shown in FIG. 10 .
  • FIG. 13 is a schematic structural diagram of a second bracket covering a portion of the surface of the structure shown in FIG. 12 in one embodiment of the present application.
  • FIG. 14 is a second view of the stacking of the first battery cell assembly, the second battery cell assembly, and the heat sink in one embodiment of the present application.
  • FIG. 15 is a partial enlarged view of the XV region in FIG. 14 .
  • FIG. 16 is an exploded view of a first battery cell assembly, a second battery cell assembly, and a heat sink in one embodiment of the present application.
  • FIG. 17 is another view of the exploded view shown in FIG. 16 .
  • FIG. 18 is a partial enlarged view of the XVIII region in FIG. 16 .
  • FIG. 19 is a schematic structural diagram of an extended embodiment of the structure shown in FIG. 18 .
  • FIG. 20 is a schematic structural diagram of an extended embodiment of the structure shown in FIG. 18 .
  • FIG. 21 is a schematic structural diagram of an extended embodiment of the structure shown in FIG. 18 .
  • FIG. 22 is a partial enlarged view of the area XXII in FIG. 16 .
  • FIG. 23 is a schematic structural diagram of an extended embodiment of the structure shown in FIG. 22 .
  • FIG. 24 is a schematic structural diagram of an extended embodiment of the structure shown in FIG. 22 .
  • FIG. 25 is a schematic structural diagram of an extended embodiment of the structure shown in FIG. 22 .
  • FIG. 26 is a schematic diagram of the structure of an electrical device in one embodiment of the present application.
  • Second wall Housing 10 First Wall 11 Second through hole 111 Second Wall 12 The third through hole 121 Third Wall 13 The Fourth Wall 14 Fifth Wall 15 The Sixth Wall 16 First battery cell assembly 20 First cell 21 First housing 211 First body part 2111 First edge sealing 2112 First side seal 21121 First top seal 21122 First electrode terminal 212 Third electrode terminal 213 First connection area 214 First bracket 22 First side 221 First convex part 222 First concave portion 223 Third convex part 224 The third recess 225 First stopper 226 First Opening 2261 Second stopper 227 Second opening 2271 First channel 228 Second battery cell assembly 30 Second cell 31 Second housing 311 Second main body 3111 Second edge sealing part 3112 Second side seal 31121 Second top seal 31122 Second electrode terminal 312 Fourth electrode terminal 313 Second connection area 314 Second bracket 32 Second side 321 Second concave portion 322 Second convex part 323 Fourth concave portion 324 Fourth convex part 325 Third stopper 326 The third opening 3261 Fourth stopper 327 Fourth Opening 3271 Second channel 328 Heat
  • An embodiment of the present application provides a battery pack, including a housing, a first battery cell assembly, a second battery cell assembly, and a heat sink.
  • the first battery cell assembly is disposed in the housing, the first battery cell assembly includes a first battery cell and a first bracket, and the first bracket is bonded to the surface of the first battery cell.
  • the second battery cell assembly is disposed in the housing, the first battery cell assembly and the second battery cell assembly are stacked along a first direction, the second battery cell assembly includes a second battery cell and a second bracket, the second bracket is bonded to the surface of the second battery cell, the second bracket is connected to the first bracket, and a gap is formed between the first battery cell and the second battery cell.
  • the heat sink is disposed in the housing and in the gap.
  • the battery pack is connected via a first bracket and a second bracket, and the heat sink is disposed in a gap between the first battery cell assembly and the second battery cell assembly, which helps to reduce damage to the heat sink caused by squeezing of the battery cell assembly and improve the service life of the battery pack.
  • an embodiment of the present application provides a battery pack 100, including a shell 10, a first battery cell assembly 20, a second battery cell assembly 30, a heat sink 40 and a circuit board (not shown), the first battery cell assembly 20, the second battery cell assembly 30, the heat sink 40 and the circuit board are arranged in the shell 10, the second battery cell assembly 30 and the first battery cell assembly 20 are stacked along a first direction Z, and the first battery cell assembly 20 and the second battery cell assembly 30 are both connected to the circuit board.
  • the circuit board controls the charging and discharging of the first battery cell assembly 20 and the second battery cell assembly 30.
  • the circuit board includes a BMS assembly (Battery Management System), and the BMS assembly includes a plurality of electronic components, which realize functions such as data collection, control, protection, communication, power calculation, signal transmission, and power transmission of the battery cells.
  • BMS assembly Battery Management System
  • the first battery cell assembly 20 includes a first battery cell 21 and a first bracket 22 .
  • the first bracket 22 is bonded to at least a portion of the surface of the first battery cell 21 .
  • the second battery cell assembly 30 includes a second battery cell 31 and a second bracket 32.
  • the second bracket 32 is bonded to at least a portion of the surface of the second battery cell 31.
  • the second bracket 32 is connected to the first bracket 22.
  • a gap 91 is formed between the component 20 and the second battery cell assembly 30 , and the heat dissipation component 40 is disposed in the gap 91 .
  • the battery pack 100 is connected by the first bracket 22 and the second bracket 32.
  • the heat sink 40 is disposed in the gap 91 between the first battery cell assembly 20 and the second battery cell assembly 30, which is beneficial to reduce the damage of the heat sink 40 caused by the extrusion of the battery cell assembly and improve the service life of the battery pack.
  • the heat sink 40 is beneficial to improve the heat dissipation of the first battery cell assembly 20 and the second battery cell assembly 30, and reduce the influence of heat on the first battery cell assembly 20 and the second battery cell assembly 30.
  • the first bracket 22 is formed on the surface of the first battery cell 21 by a potting process.
  • the infusion process may include at least one of an injection molding process and a glue potting process.
  • the injection molding material (such as an insulating material) can be melted by an injection molding device so that the melted injection molding material covers the surface of the first battery cell 21 .
  • the first bracket 22 is formed, thereby the first bracket 22 is formed on the surface of the first battery cell 21 .
  • the insulating material (such as a flowable insulating material) is used to cover the surface of the first battery cell 21 , and the insulating material is solidified to form the first bracket 22 , thereby the first bracket 22 is formed on the surface of the first battery cell 21 .
  • the first bracket 22 is formed on the surface of the first battery cell 21 by an injection molding process, and the first bracket 22 is bonded to the first battery cell 21 , which is beneficial to improve the stability of the first bracket 22 connecting to the first battery cell 21 .
  • the first bracket 22 is formed on a portion of the surface of the first battery cell 21 by glue injection, and the first bracket 22 is bonded to the first battery cell 21 , which is beneficial to improve the stability of the first bracket 22 connecting to the first battery cell 21 .
  • the first bracket 22 is made of a plastic material with good thermal conductivity, which can help the first battery cell 21 to dissipate its own heat and improve the heat dissipation of the first battery cell 21.
  • the material selected for the first bracket 22 is a mixture, which is formed by filling a thermally conductive filler in a polymer matrix material.
  • the polymer matrix material includes but is not limited to any one of polyphenylene sulfide (PPS), nylon, synthetic rubber (TPE), polycarbonate (PC), polypropylene (PP), polyphthalamide (PPA) and polyetheretherketone (PEEK), and the thermally conductive filler includes but is not limited to any one of silicon carbide, aluminum oxide, graphite, fibrous high thermal conductivity carbon powder and flaky high thermal conductivity carbon powder.
  • PPS polyphenylene sulfide
  • TPE synthetic rubber
  • PC polycarbonate
  • PP polypropylene
  • PPA polyphthalamide
  • PEEK polyetheretherketone
  • the thermally conductive filler includes but is not limited to any one of silicon carbide, aluminum oxide, graphite, fibrous high thermal conductivity carbon powder and flaky high thermal conductivity carbon powder.
  • the second bracket 32 is formed on the surface of the second battery cell 31 by a potting process.
  • the second bracket 32 is injection molded on the surface of the second battery cell 31 , and the second bracket 32 is bonded to the second battery cell 31 , which helps to improve the stability of the second bracket 32 connecting to the second battery cell 31 .
  • the second bracket 32 is formed on a portion of the surface of the second battery cell 31 by glue injection, and the second bracket 32 is bonded to the second battery cell 31 , which is beneficial to improve the stability of the second bracket 32 connecting the second battery cell 31 .
  • the second bracket 32 is made of a plastic material with good thermal conductivity, which can help the second battery cell 31 to dissipate its own heat and improve the heat dissipation rate of the second battery cell 31.
  • the material used for the second bracket 32 is a mixture, which is formed by filling a thermal conductive filler in a polymer matrix material.
  • the polymer matrix material includes but is not limited to polyphenylene sulfide (PPS), Any one of nylon, synthetic rubber (TPE), polycarbonate (PC), polypropylene (PP), polyphthalamide (PPA) and polyetheretherketone (PEEK), and the thermal conductive filler includes but is not limited to any one of silicon carbide, alumina, graphite, fibrous high thermal conductive carbon powder and flaky high thermal conductive carbon powder.
  • PPS polyphenylene sulfide
  • TPE synthetic rubber
  • PC polycarbonate
  • PP polypropylene
  • PPA polyphthalamide
  • PEEK polyetheretherketone
  • the thermal conductive filler includes but is not limited to any one of silicon carbide, alumina, graphite, fibrous high thermal conductive carbon powder and flaky high thermal conductive carbon powder.
  • first bracket 22 and the second bracket 32 are connected to each other. In one embodiment, the first bracket 22 and the second bracket 32 are connected by abutment along the first direction Z, so that the first battery cell assembly 20 and the second battery cell assembly 30 form a gap 91, which is beneficial to reduce the damage of the heat sink 40 between the first battery cell assembly 20 and the second battery cell assembly 30 due to the extrusion of the battery cell assembly, thereby improving the service life of the battery pack.
  • a portion of the gap 91 is located between the first bracket 22 and the second bracket 32 .
  • the heat sink 40 connects the first battery cell assembly 20 and the second battery cell assembly 30 , which is beneficial to improve the heat dissipation of the first battery cell assembly 20 and the second battery cell assembly 30 and reduce the impact of heat on the first battery cell assembly 20 and the second battery cell assembly 30 .
  • the heat sink 40 includes a first surface 41 and a second surface 42, the first surface 41 and the second surface 42 are respectively located on two opposite sides of the heat sink 40 along the first direction Z, the first surface 41 faces the first battery cell assembly 20, and the second surface 42 faces the second battery cell assembly 30.
  • the first surface 41 is connected to the first battery cell assembly 20.
  • the second surface 42 is connected to the second battery cell assembly 30.
  • the heat sink 40 is disposed between the first battery cell assembly 20 and the second battery cell assembly 30, which is conducive to absorbing the heat transferred from the first battery cell assembly 20 and the second battery cell assembly 30, accelerating the heat dissipation of the first battery cell assembly 20 and the second battery cell assembly 30, and reducing the influence of heat on the performance of the first battery cell assembly 20 and the second battery cell assembly 30.
  • the first battery cell assembly 20 and the second battery cell assembly 30 are connected to each other by the first bracket 22 and the second bracket 32 to support and fix each other, and the heat sink 40 is disposed between the first battery cell assembly 20 and the second battery cell assembly 30, which is conducive to reducing the risk of the interaction force between the first bracket 22 and the second bracket 32 to the heat sink 40.
  • the housing 10 includes a first wall 11, a second wall 12, a third wall 13, a fourth wall 14, a fifth wall 15 and a sixth wall 16.
  • the first wall 11 and the second wall 12 are arranged in an array
  • the third wall 13 and the fourth wall 14 are arranged in an array
  • the fifth wall 15 and the sixth wall 16 are arranged in an array
  • the fifth wall 15 and the sixth wall 16 are both connected to the first wall 11, the second wall 12, the third wall 13 and the fourth wall 14.
  • the first wall 11, the second wall 12, the third wall 13, the fourth wall 14, the fifth wall 15 and the sixth wall 16 are arranged to form a cavity space for accommodating the first battery cell assembly 20, the second battery cell assembly 30, the heat sink 40 and the circuit board.
  • 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 Z direction is defined as the first direction, the X direction is the second direction, and the Y direction is the third direction.
  • the first direction Z is the direction in which the first wall 11 and the second wall 12 are arranged
  • the second direction X is the direction in which the third wall 13 and the fourth wall 14 are arranged
  • the third direction Y is the direction in which the fifth wall 15 and the sixth wall 16 are arranged.
  • the first battery cell 21 and the second battery cell 31 are soft-pack battery cells, and the first battery cell 21 and the second battery cell 31 are connected by the first bracket 22 and the second bracket 32 to achieve position limiting and protection, which is beneficial to reduce the amount of fillers and reduce the cost of the battery pack 100.
  • the second battery cell 31 may also be a hard shell battery cell (not shown).
  • the heat sink 40 includes any one of a liquid cooling plate and an air cooling plate.
  • the first battery cell 21 includes a first shell 211 , a first electrode assembly (not shown), a first electrode terminal 212 and a third electrode terminal 213 .
  • the first electrode assembly is disposed inside the first shell 211 , and the first electrode terminal 212 and the third electrode terminal 213 are both connected to the first electrode assembly and extend out of the first shell 211 .
  • One of the first electrode terminal 212 and the third electrode terminal 213 is a positive electrode terminal, and the other of the first electrode terminal 212 and the third electrode terminal 213 is a negative electrode terminal.
  • the first electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator, the separator is arranged between the positive electrode sheet and the negative electrode sheet, the positive electrode sheet, the separator and the negative electrode sheet are wound or stacked to form the first electrode assembly, the first electrode terminal 212 is connected to the positive electrode sheet, and the third electrode terminal 213 is connected to the negative electrode sheet.
  • the first housing 211 includes a first main body 2111 and a first edge sealing portion 2112, the first edge sealing portion 2112 is connected to the first main body 2111 and extends from the first main body 2111, the first electrode assembly is disposed inside the first main body 2111, and the first electrode terminal 212 and the third electrode terminal 213 extend from the first edge sealing portion 2112.
  • the first edge sealing portion 2112 includes a first side sealing portion 21121 and a first top sealing portion 21122 connected to each other, and the first electrode terminal 212 and the third electrode terminal 213 extend from the first top sealing portion 21122.
  • the first electrode terminal 212 and the third electrode terminal 213 are respectively located at opposite ends of the first main body 2111.
  • the two first top seals 21122 are respectively located at opposite sides of the first main body 2111, and the two first side seals 21121 are respectively located at opposite sides of the first main body 2111.
  • Each first top seal 21122 is connected to two first side seals 21121, and the first electrode terminal 212 and the third electrode terminal 213 extend from the two first top seals 21122.
  • the first electrode terminal 212 and the third electrode terminal 213 are located on the same side of the first main body 2111 (not shown).
  • the number of the first battery cells 21 in the first battery cell assembly 20 is multiple, and the multiple first battery cells 21 are arranged along the third direction Y, and two adjacent first battery cells 21 along the third direction Y are connected to each other. In one embodiment, the number of the first battery cells 21 arranged along the third direction Y in the first battery cell assembly 20 is two, three, four or more.
  • the following further describes the example in which the number of the first battery cells 21 arranged along the third direction Y in the first battery cell assembly 20 is three.
  • three first battery cells 21 arranged along the third direction Y are sequentially connected in series, and the first electrode terminal 212 of one first battery cell 21 is connected to the third electrode terminal 213 of the adjacent first battery cell 21.
  • the first electrode terminal 212 and the third electrode terminal 213 are in contact and connected to form a first connection region 214.
  • the first bracket 22 covers a portion of the surface of the first electrode terminal 212 and a portion of the surface of the first shell 211, so that the first electrode terminal 212 is stably connected to the first shell 211, and The number of supports for the first electrode terminal 212 can be reduced.
  • the first bracket 22 completely covers the first top seal portion 21122 connected to the first electrode terminal 212, and covers a portion of the first body portion 2111 and a portion of the first side seal portion 21121, which is conducive to further improving the stability of the first bracket 22 connected to the first shell 211 and reducing the risk of damage to the first electrode terminal 212.
  • the first bracket 22 covers a portion of the surface of the third electrode terminal 213 and a portion of the surface of the first housing 211, so that the third electrode terminal 213 is stably connected to the first housing 211, and the number of supports for the third electrode terminal 213 can be reduced.
  • the first bracket 22 completely covers the first top seal portion 21122 connected to the third electrode terminal 213, and covers a portion of the first body portion 2111 and a portion of the first side seal portion 21121, which is conducive to further improving the stability of the first bracket 22 connected to the first housing 211 and reducing the risk of damage to the first electrode terminal 212.
  • the first bracket 22 covers a portion of the first electrode terminal 212 located outside the first shell 211 , and the first bracket 22 covers a portion of the third electrode terminal 213 located outside the first shell 211 .
  • the first bracket 22 covers at least part of the surface of the first connection area 214 and at least part of the surface of the two first shells 211 on both sides of the first connection area 214, so that the first electrode terminal 212 and the third electrode terminal 213 are stably connected to each other and stably connected to the first shell 211, which is conducive to reducing the number of supports for the first electrode terminal 212 and the third electrode terminal 213 and improving the stability of the connection between the first electrode terminal 212 and the third electrode terminal 213.
  • the first bracket 22 completely covers the surface of the first connection area 214 and covers the first top seals 21122 located on both sides of the first connection area 214, which is conducive to further improving the stability of the first bracket 22 connecting the first shell 211 and reducing the risk of damage to the first electrode terminal 212 and the third electrode terminal 213.
  • the first bracket 22 is formed on the surface of one or more first battery cells 21 at one time to form a first battery cell assembly 20. In one embodiment, the first bracket 22 is formed on at least a portion of the surface of one or more first battery cells 21 by a perfusion process, and the first bracket 22 and the one or more first battery cells 21 form an assembly, and multiple assemblies are again connected to each other by a perfusion process to form the first battery cell assembly 20.
  • the first bracket 22 completely covers the first shell 211 (not shown).
  • the first bracket 22 can play a protective role, reduce the risk of the first shell 211 being damaged by foreign objects, and improve the safety performance of the battery pack 100.
  • the first bracket 22 covers the portion of the first shell 211, the first bracket 22 covers the portion of the first electrode terminal 212 located outside the first shell 211, and the first bracket 22 covers the portion of the third electrode terminal 213 located outside the first shell 211 as examples for further description.
  • a plurality of first battery cells 21 are arranged along the second direction X. In one embodiment, along the second direction X, two adjacent first battery cells 21 are in contact and connected.
  • the number of the first battery cells 21 arranged along the second direction X is two, three, four or more.
  • the following further describes the example where the number of the first battery cells 21 arranged along the second direction X is three.
  • first battery cell assembly 20 there are three first battery cells 21 along the third direction Y. Arranged, three first battery cells 21 are arranged along the second direction X, and the total number of the first battery cells 21 is nine.
  • three first battery cells 21 arranged along the second direction X are connected in parallel with each other, wherein three first electrode terminals 212 are located on the same side of the three first battery cells 21 and are connected to each other to form a parallel terminal, and three third electrode terminals 213 are located on the other side of the three first battery cells 21 and are connected to each other to form another parallel terminal, and the two parallel terminals are connected to form a first connection area 214.
  • the second battery cell 31 includes a second shell 311, a second electrode assembly (not shown), a second electrode terminal 312 and a fourth electrode terminal 313.
  • the second electrode assembly is disposed inside the second shell 311, and the second electrode terminal 312 and the fourth electrode terminal 313 are connected to the second electrode assembly and extend out of the second shell 311.
  • one of the second electrode terminal 312 and the fourth electrode terminal 313 is a positive electrode terminal, and the other of the second electrode terminal 312 and the fourth electrode terminal 313 is a negative electrode terminal.
  • the second housing 311 includes a second main body 3111 and a second edge seal 3112
  • the second edge seal 3112 is connected to the second main body 3111 and extends from the second main body 3111
  • the second electrode assembly is disposed inside the second main body 3111
  • the second electrode terminal 312 and the fourth electrode terminal 313 extend from the second edge seal 3112.
  • the second edge seal 3112 includes a second side seal 31121 and a second top seal 31122 connected to each other, and the second electrode terminal 312 and the fourth electrode terminal 313 extend from the second top seal 31122.
  • the second electrode terminal 312 and the fourth electrode terminal 313 are respectively located at opposite ends of the second main body 3111. There are two second top seals 31122, and two second side seals 31121. The two second top seals 31122 are respectively located at opposite sides of the second main body 3111, and the two second side seals 31121 are respectively located at opposite sides of the second main body 3111. Each second top seal 31122 is connected to two second side seals 31121, and the second electrode terminal 312 and the fourth electrode terminal 313 extend from the two second top seals 31122. In other embodiments, the second electrode terminal 312 and the fourth electrode terminal 313 are located on the same side of the first main body 2111 (not shown).
  • first electrode terminal 212 and the third electrode terminal 213 are respectively located at two opposite ends of the first battery cell 21
  • second electrode terminal 312 and the fourth electrode terminal 313 are respectively located at two opposite ends of the second battery cell 31 .
  • the number of the second battery cells 31 in the second battery cell assembly 30 is multiple, and the multiple second battery cells 31 are arranged along the third direction Y, and two second battery cells 31 adjacent to each other along the third direction Y are connected to each other. In one embodiment, the number of the second battery cells 31 arranged along the third direction Y in the second battery cell assembly 30 is two, three, four or more.
  • the following further describes the example in which the number of the second battery cells 31 arranged along the third direction Y in the second battery cell assembly 30 is three.
  • three second battery cells 31 arranged along the third direction Y are sequentially connected in series, and the second electrode terminal 312 of one second battery cell 31 is connected to the fourth electrode terminal 313 of the adjacent second battery cell 31.
  • the second electrode terminal 312 and the fourth electrode terminal 313 are in contact and connected to form Second connection region 314 .
  • the second bracket 32 covers a portion of the surface of the second electrode terminal 312 and a portion of the surface of the second housing 311, so that the second electrode terminal 312 is stably connected to the second housing 311, and the number of supports at the second electrode terminal 312 can be reduced.
  • the second bracket 32 completely covers the second top seal portion 31122 connected to the second electrode terminal 312, and covers a portion of the second body portion 3111 and a portion of the second side seal portion 31121, which is conducive to further improving the stability of the second bracket 32 connected to the second housing 311 and reducing the risk of damage to the second electrode terminal 312.
  • the second bracket 32 covers a portion of the surface of the fourth electrode terminal 313 and a portion of the surface of the second housing 311, so that the fourth electrode terminal 313 is stably connected to the second housing 311, and the number of supports at the fourth electrode terminal 313 can be reduced.
  • the second bracket 32 completely covers the second top seal portion 31122 connected to the fourth electrode terminal 313, and covers a portion of the second body portion 3111 and a portion of the second side seal portion 31121, which is conducive to further improving the stability of the second bracket 32 connected to the second housing 311 and reducing the risk of damage to the fourth electrode terminal 313.
  • the second bracket 32 covers the portion of the second electrode terminal 312 located outside the second shell 311 , and the second bracket 32 covers the portion of the fourth electrode terminal 313 located outside the second shell 311 .
  • the second bracket 32 covers at least part of the surface of the second connection area 314 and at least part of the surface of the two second shells 311 on both sides of the second connection area 314, so that the second electrode terminal 312 and the fourth electrode terminal 313 are stably connected to each other and stably connected to the second shell 311, which is conducive to reducing the number of supports for the second electrode terminal 312 and the fourth electrode terminal 313 and improving the stability of the connection between the second electrode terminal 312 and the fourth electrode terminal 313.
  • the second bracket 32 completely covers the surface of the second connection area 314 and covers the second top seals 31122 located on both sides of the second connection area 314, which is conducive to further improving the stability of the second bracket 32 connecting the second shell 311 and reducing the risk of damage to the second electrode terminal 312 and the fourth electrode terminal 313.
  • the second bracket 32 is formed on the surface of one or more second battery cells 31 at one time to form a second battery cell assembly 30. In one embodiment, the second bracket 32 is formed on at least part of the surface of one or more second battery cells 31 by a perfusion process, and the second bracket 32 and one or more second battery cells 31 form an assembly, and multiple assemblies are again connected to each other by a perfusion process to form the second battery cell assembly 30.
  • the second bracket 32 completely covers the second shell 311 (not shown).
  • the second bracket 32 can play a protective role, reduce the risk of the second shell 311 being damaged by foreign objects, and improve the safety performance of the battery pack 100.
  • the second bracket 32 covers the portion of the second shell 311, the second bracket 32 covers the portion of the second electrode terminal 312 outside the second shell 311, and the second bracket 32 covers the portion of the fourth electrode terminal 313 outside the second shell 311. This is further described below.
  • a plurality of second battery cells 31 are arranged along the second direction X. In one embodiment, along the second direction X, two adjacent second battery cells 31 are in contact and connected.
  • the number of the second battery cells 31 arranged along the second direction X is two, three, four or more.
  • the following further describes the example where the number of the second battery cells 31 arranged along the second direction X is three.
  • the second battery cell assembly 30 three second battery cells 31 are arranged along the third direction Y, and three second battery cells 31 are arranged along the second direction X, and the total number of the second battery cells 31 is nine.
  • three second battery cells 31 arranged along the second direction X are connected in parallel with each other, wherein three second electrode terminals 312 are located on the same side of the three second battery cells 31 and are connected to each other to form a parallel terminal, and three fourth electrode terminals 313 are located on the other side of the three second battery cells 31 and are connected to each other to form another parallel terminal, and the two parallel terminals are connected to form a second connection area 314.
  • FIG. 2 and FIG. 3 there are a plurality of first battery cell assemblies 20 , and the plurality of first battery cell assemblies 20 are arranged along the second direction X. In one embodiment, there are a plurality of second battery cell assemblies 30 , and the plurality of second battery cell assemblies 30 are arranged along the second direction X.
  • the heat sink 40 is disposed between the plurality of first battery cell assemblies 20 and the plurality of second battery cell assemblies 30 .
  • the heat sink 40 absorbs the heat transferred from the plurality of first battery cell assemblies 20 and the plurality of second battery cell assemblies 30 , which is beneficial to accelerate the heat dissipation of the first battery cell assemblies 20 and the plurality of second battery cell assemblies 30 , and reduce the influence of heat on the performance of the first battery cell assemblies 20 and the plurality of second battery cell assemblies 30 .
  • the first battery cell assembly 20 and the second battery cell assembly 30 correspond to each other and are stacked and connected, and one first battery cell assembly 20 and one second battery cell assembly 30 are stacked and connected.
  • the first bracket 22 of the first battery cell assembly 20 is connected to the second bracket 32 of the second battery cell assembly 30, so that the first battery cell assembly 20 and the second battery cell assembly 30 support each other and limit each other, so that the first battery cell 21 and the second battery cell 31 are spaced apart along the first direction Z.
  • a first battery cell assembly 20 and a second battery cell assembly 30 connected to each other constitute an assembly, and a plurality of assemblies are arranged along the second direction X, and the gaps 91 of the plurality of assemblies are connected to each other.
  • the first bracket 22 of the first battery cell assembly 20 and the second bracket 32 of the second battery cell assembly 30 abut against each other and support and limit each other.
  • one of the first bracket 22 of the first battery cell assembly 20 and the second bracket 32 of the second battery cell assembly 30 is provided with a protrusion
  • the other of the first bracket 22 and the second bracket 32 is provided with a recess, and at least part of the protrusion is provided in the recess, so that the first bracket 22 and the second bracket 32 are connected to each other to support the limit.
  • the first bracket 22 includes a first side surface 221 and a first protrusion 222.
  • the first side surface 221 faces the second bracket 32, and the first protrusion 222 extends from the first side surface 221.
  • the second bracket 32 includes a second side surface 321 and a second recess 322.
  • the second side surface 321 and the first side surface 221 face each other, the second recess 322 is provided on the second side surface 321, the opening of the second recess 322 faces the first side surface 221, and at least a portion of the first protrusion 222 is provided in the second recess 322, so that the first bracket 22 and the second bracket 32 are connected to each other along the first direction Z to support and limit, forming an interval.
  • Gap 91 the second side surface 321 and the first side surface 221 face each other
  • the second recess 322 is provided on the second side surface 321
  • the opening of the second recess 322 faces the first side surface 221
  • at least a portion of the first protrusion 222 is provided in the second recess 322, so that the first bracket 22 and the second bracket 32 are connected to each other along the first direction Z to support and limit, forming an interval. Gap 91.
  • the minimum length of the gap 91 is L1
  • the maximum length of the heat sink 40 is L2, satisfying L2 ⁇ L1, which can reduce the influence of the interaction force between the first bracket 22 and the second bracket 32 on the heat sink 40, and reduce the risk of damaging the heat sink 40 by the interaction force between the first bracket 22 and the second bracket 32.
  • L2 L1
  • the first bracket 22 includes a first recess 223, which is disposed on the first side surface 221, and an opening of the first recess 223 faces the second side surface 321 along the first direction Z.
  • the second bracket 32 includes a second protrusion 323, which is disposed on the second side surface 321 and extends out of the second side surface 321. A portion of the second protrusion 323 is disposed in the first recess 223.
  • the first bracket 22 further includes a third protrusion 224, and the third protrusion 224 and the first protrusion 222 are respectively disposed at two opposite ends of the first bracket 22 along the first direction Z, and the extension direction of the third protrusion 224 is opposite to the extension direction of the first protrusion 222.
  • the first bracket 22 further includes a third recess 225, and the third recess 225 and the first recess 223 are respectively disposed at two opposite ends of the first bracket 22 along the first direction Z.
  • Both ends of the first bracket 22 along the first direction Z are provided with convex parts or concave parts.
  • both ends of the first battery cell assembly 20 along the first direction Z can be connected to the second battery cell assembly 30, which is conducive to improving the assembly efficiency of the connection between the first battery cell assembly 20 and the second battery cell assembly 30.
  • other battery cell assemblies can be stacked on the side of the first battery cell assembly 20 away from the second battery cell assembly 30 to increase the capacity of the battery pack 100.
  • the second bracket 32 further includes a fourth recess 324, and the fourth recess 324 and the second recess 322 are respectively disposed at two opposite ends of the second bracket 32 along the first direction Z.
  • the second bracket 32 further includes a fourth protrusion 325, and the fourth protrusion 325 and the second recess 322 are respectively disposed at two opposite ends of the second bracket 32 along the first direction Z.
  • Both ends of the second bracket 32 along the first direction Z are provided with convex parts or concave parts.
  • both ends of the second battery cell assembly 30 along the first direction Z can be connected to the first battery cell assembly 20, which is conducive to improving the assembly efficiency of the second battery cell assembly 30 and the first battery cell assembly 20.
  • other battery cell assemblies can be stacked on the side of the second battery cell assembly 30 away from the first battery cell assembly 20 to increase the capacity of the battery pack 100.
  • the projections of all the first battery cells 21 overlap with the projections of the heat sink 40. Part of the heat on all the first battery cells 21 can be transferred out through the heat sink 40, which can improve the heat dissipation of the battery pack 100, and is conducive to reducing the temperature difference between different first battery cell components 20, and reducing the impact of heat on the battery pack 100.
  • the projections of all the first shells 211 are located within the projection of the heat sink 40.
  • the projections of all the second battery cells 31 overlap with the projections of the heat sink 40, and part of the heat on all the second battery cells 31 can be transferred out through the heat sink 40, which can improve the heat dissipation of the battery pack 100 and help reduce the temperature difference between different second battery cell components 30, thereby reducing the impact of heat on the battery pack 100.
  • all the second shells 311 The projections of are all located within the projection of the heat sink 40.
  • a first through hole 43 is provided on the heat sink 40, which passes through the first direction Z.
  • the first through hole 43 passes through the first surface 41 and the second surface 42.
  • a portion of the first protrusion 222 and/or a portion of the second recess 322 is accommodated in the first through hole 43, which can reduce the influence of the interaction force between the first bracket 22 and the second bracket 32 on the heat sink 40, and reduce the risk of the interaction force between the first bracket 22 and the second bracket 32 damaging the heat sink 40.
  • the number of the first through holes 43 on the heat sink 40 is multiple, and the multiple first through holes 43 are arranged at intervals along the second direction X, and the multiple first through holes 43 are arranged at intervals along the third direction Y.
  • the number and position of the first through holes 43 correspond to the number and position of the mutually abutting convex parts and concave parts, so that each mutually abutting convex part and concave part passes through the corresponding first through hole 43, reducing the risk of the interaction force between the first bracket 22 and the second bracket 32 damaging the heat sink 40.
  • the battery pack 100 further includes a first heat conductive member 51, which is disposed between the first surface 41 and the first battery cell assembly 20.
  • the first heat conductive member 51 can improve the heat exchange efficiency between the first battery cell assembly 20 and the heat dissipation member 40, thereby improving the heat dissipation of the battery pack 100.
  • the first heat conductive member 51 connects the first surface 41 and the first battery cell assembly 20 in a contact manner.
  • the first heat conductive member 51 is coated on the first surface 41, which can improve the heat exchange efficiency between the first heat conductive member 51 and the heat sink 40. In one embodiment, the first heat conductive member 51 is in contact with the first housing 211, which can improve the heat exchange efficiency between the first heat conductive member 51 and the first battery core 21. In one embodiment, the first heat conductive member 51 is formed by filling the first surface 41 and the first battery core 21 with heat conductive glue and then curing it.
  • the battery pack 100 further includes a second heat conductive member 52, which is disposed between the second surface 42 and the second battery cell assembly 30.
  • the second heat conductive member 52 can improve the heat exchange efficiency between the second battery cell assembly 30 and the heat dissipation member 40, thereby improving the heat dissipation of the battery pack 100.
  • the second heat conductive member 52 connects the second surface 42 and the second battery cell assembly 30 in a contact manner.
  • the second heat conductive member 52 is coated on the second surface 42, which can improve the heat exchange efficiency between the second heat conductive member and the heat sink 40. In one embodiment, the second heat conductive member 52 is in contact with the second housing 311, which can improve the heat exchange efficiency between the second heat conductive member 52 and the second battery cell 31. In one embodiment, the second heat conductive member 52 is formed by filling the heat conductive glue between the second surface 42 and the second battery cell 31 and then curing.
  • the first bracket 22 is connected to the heat sink 40
  • the second bracket 32 is connected to the heat sink 40
  • the first bracket 22 and the second bracket 32 are indirectly connected by connecting the heat sink 40.
  • the first surface 41 of the heat sink 40 is provided with a first groove (not shown)
  • the second surface 42 is provided with a second groove (not shown)
  • the first groove is formed by the first surface 41 being recessed
  • the second groove is formed by the second surface 42 being recessed
  • the first protrusion 222 on the first bracket 22 is inserted into the first groove
  • the second protrusion 323 on the second bracket 32 is inserted into the second groove.
  • the number of the heat sink 40 is multiple (not shown).
  • the multiple heat sinks 40 are arranged along the second direction X.
  • the multiple heat sinks 40 are arranged along the third direction Y.
  • the number of the heat sink 40 is one.
  • the first surface 41 of the heat sink 40 includes three first areas 44, and the three first areas 44 are arranged in a spaced arrangement along the third direction Y, and the first heat conductor 51 is disposed in the first area 44.
  • the plurality of first battery cells 21 stacked along the second direction X corresponds to one first area 44.
  • the projections of all the first shells 211 overlap with the projections of the first area 44.
  • the first through hole 43 is disposed between two adjacent first regions 44 .
  • the second surface 42 of the heat sink 40 includes three second areas 45, and the three second areas 45 are arranged at intervals along the third direction Y, and the second heat conductor 52 is disposed in the second area 45.
  • a plurality of second battery cells 31 stacked along the second direction X corresponds to one second area 45.
  • the projections of all the second shells 311 overlap with the projections of the second areas 45.
  • the first through hole 43 is disposed between two adjacent second regions 45 .
  • the first bracket 22 covers at least a portion of the two sides of the first main body 2111 along the first direction Z.
  • the first bracket 22 is connected to the second bracket 32, it is helpful to reduce the influence of the interaction force between the first bracket 22 and the second bracket 32 on the first top sealing portion 21122.
  • the first bracket 22 covers at least a portion of the first side seal portion 21121, which helps to further reduce the effect of the interaction force between the first bracket 22 and the second bracket 32 on the first top seal portion 21122 and reduce the risk of deformation of the first top seal portion 21122.
  • the projection of the first protrusion 222 overlaps with the projection of the first main body 2111 , which helps to reduce the influence of the interaction force between the first bracket 22 and the second bracket 32 on the first top sealing portion 21122 when the first bracket 22 is connected to the second bracket 32 .
  • the second bracket 32 covers at least a portion of the second main body portion 3111 on both sides along the first direction Z.
  • first bracket 22 is connected to the second bracket 32, it is helpful to reduce the influence of the interaction force between the first bracket 22 and the second bracket 32 on the second top sealing portion 31122.
  • the second bracket 32 covers at least a portion of the second side seal portion 31121, which is beneficial to further reduce the effect of the interaction force between the first bracket 22 and the second bracket 32 on the second top seal portion 31122 and reduce the risk of deformation of the second top seal portion 31122.
  • the projection of the second recess 322 overlaps with the projection of the second main body portion 3111 , which helps to reduce the influence of the interaction force between the first bracket 22 and the second bracket 32 on the second top sealing portion 31122 when the first bracket 22 is connected to the second bracket 32 .
  • the first support 22 covers the first connection area 214 to form a first channel 228, and the first channel 228 runs through the first support 22.
  • the first channel 228 can form a heat dissipation channel for cooling objects to pass through, thereby improving the heat dissipation of the first connection area 214 and the first battery cell assembly 20.
  • the first channel 228 runs through the first support 22 along the first direction Z.
  • the first through hole 43 and the gap 91 are connected to the first channel 228, so that a heat dissipation channel along the first direction Z can be formed in the battery pack 100, thereby improving the heat dissipation of the first battery cell assembly 20 and the second battery cell assembly 21.
  • the heat dissipation of the component 30 and the heat dissipation component 40 are connected to the first channel 228, so that a heat dissipation channel along the first direction Z can be formed in the battery pack 100, thereby improving the heat dissipation of the first battery cell assembly 20 and the second battery cell assembly 21.
  • the first wall 11 is provided with a second through hole 111, which passes through the first wall 11;
  • the second wall 12 is provided with a third through hole 121, which passes through the second wall 12;
  • the first channel 228 communicates with the second through hole 111 and the third through hole 121;
  • the first channel 228, the second through hole 111 and the third through hole 121 form a heat dissipation channel for a coolant to pass through;
  • the coolant outside the battery pack 100 passes through the first channel 228, the second through hole 111 and the third through hole 121, and takes away part of the heat in the battery pack 100, thereby improving the heat dissipation of the battery pack 100.
  • the first channel 228, the gap 91, the first through hole 43, the second through hole 111 and the third through hole 121 are interconnected.
  • the cooling substance includes but is not limited to any one of cold air, cooling liquid and coolant.
  • the second support 32 covers the second connection area 314 to form a second channel 328, and the second channel 328 runs through the second support 32.
  • the second channel 328 can form a heat dissipation channel for cooling fluid to flow, thereby improving the heat dissipation of the second connection area 314 and the second battery cell assembly 30.
  • the second channel 328 runs through the second support 32 along the first direction Z.
  • the first through hole 43 and the gap 91 are connected to the second channel 328 , so that a heat dissipation channel along the first direction Z can be formed in the battery pack 100 , thereby improving the heat dissipation of the first battery cell assembly 20 , the second battery cell assembly 30 and the heat sink 40 .
  • first channel 228 and the second channel 328 are interconnected, which is beneficial to improve the heat dissipation of the first battery cell assembly 20, the second battery cell assembly 30 and the heat sink 40.
  • the projection of the first channel 228 and the projection of the second channel 328 overlap, which is beneficial to further improve the heat dissipation of the first battery cell assembly 20, the second battery cell assembly 30 and the heat sink 40.
  • the second channel 328 connects the second through hole 111 and the third through hole 121, and the first channel 228, the second channel 328, the second through hole 111 and the third through hole 121 form a heat dissipation channel for the coolant to pass through.
  • the coolant outside the battery pack 100 passes through the first channel 228, the second channel 328, the second through hole 111 and the third through hole 121, and takes away part of the heat inside the battery pack 100, thereby improving the heat dissipation of the battery pack 100.
  • first brackets 22 on two adjacent first battery cell assemblies 20 are connected to each other, which is beneficial to improve the stability of the connection between the adjacent first battery cell assemblies 20, reduce the number of supports between the adjacent first battery cell assemblies 20, and reduce the cost of the battery pack 100.
  • the first bracket 22 includes a first stopper 226 and a second stopper 227, the first stopper 226 and the second stopper 227 are respectively located on both sides of the first bracket 22 along the second direction X, and the first stopper 226 and the second stopper 227 are respectively extended outwardly away from each other along the second direction X.
  • the first brackets 22 of two adjacent first battery core assemblies 20 are abutted by the first stopper 226 and/or the second stopper 227, which is conducive to improving the stability of the connection between the two adjacent first battery core assemblies 20 and further improving the anti-seismic performance.
  • the length of the first stopper 226 along the second direction X is greater than the length of the second stopper 227.
  • the lengths along the second direction X are equal.
  • the first stop portion 226 of one first battery cell assembly 20 abuts against the first bracket 22 of the other first battery cell assembly 20
  • the second stop portion 227 of one first battery cell assembly 20 abuts against the first bracket 22 of the other first battery cell assembly 20.
  • the length of the first stopper 226 and the length of the second stopper 227 along the second direction X are not equal. In one embodiment, the length of the first stopper 226 along the second direction X is greater than the length of the second stopper 227 along the second direction X, and of two first battery cell assemblies 20 adjacent to each other along the second direction X, the first stopper 226 of one first battery cell assembly 20 abuts against the first bracket 22 of the other first battery cell assembly 20.
  • the length of the first stop portion 226 along the second direction X is smaller than the length of the second stop portion 227 along the second direction X, and among two adjacent first battery cell assemblies 20 along the second direction X, the second stop portion 227 of one of the first battery cell assemblies 20 abuts against the first bracket 22 of the other first battery cell assembly 20.
  • the first stopping portion 226 of one first battery cell assembly 20 abuts against the second stopping portion 227 of the other first battery cell assembly 20 .
  • first stopper 226 of a first battery cell assembly 20 abuts against the second stopper 227 of another first battery cell assembly 20 (as shown in FIG. 21 ).
  • the first stopper 226 is provided with a first opening 2261, and along the third direction Y, the projection of the first opening 2261 is at least partially separated from the projection of the second stopper 227. In one embodiment, when viewed along the third direction Y, at least a portion of the first opening 2261 is exposed to the second stopper 227.
  • the first opening 2261 forms a heat dissipation channel for a coolant to pass through, which is conducive to the coolant taking away at least part of the heat on the first bracket 22, thereby improving the heat dissipation of the first bracket 22 and the heat dissipation of the first battery cell assembly 20.
  • first openings 2261 there are multiple first openings 2261 , and the multiple first openings 2261 are arranged along the first direction Z, which is beneficial to further improve the heat dissipation of the first bracket 22 .
  • the first opening 2261 is disposed at the end of the first stopper 226 along the second direction X, and is a groove structure with an opening. In one embodiment, the first opening 2261 is a through hole.
  • the second stopper 227 is provided with a second opening 2271, and along the third direction Y, the projection of the second opening 2271 is at least partially separated from the projection of the first stopper 226. In one embodiment, when viewed along the third direction Y, at least a portion of the second opening 2271 is exposed to the first stopper 226.
  • the second opening 2271 forms a heat dissipation channel for a coolant to pass through, which is conducive to the coolant taking away at least part of the heat on the first bracket 22, thereby improving the heat dissipation of the first bracket 22 and the heat dissipation of the first battery cell assembly 20.
  • the second opening 2271 is disposed at the end of the second stopper 227 along the second direction X, and is a groove structure with an opening. In one embodiment, the second opening 2271 is a through hole.
  • the first opening 2261 is separated from the second opening 2271.
  • the first opening 2261 and the second opening 2271 are communicated with each other.
  • the following further describes the example in which the length of the first stop portion 226 along the second direction X is equal to the length of the second stop portion 227 along the second direction X.
  • first stop portion 226 and the second stop portion 227 are interconnected along the third direction Y, which is beneficial for limiting the two first battery cell assemblies 20 adjacent to each other along the second direction X along the third direction Y, further reducing the number of supports or fillers and reducing the cost of the battery pack 100.
  • the number of the first stoppers 226 is two, and the two first stoppers 226 are spaced apart along the third direction Y.
  • the number of the second stoppers 227 is two, and the two second stoppers 227 are spaced apart along the third direction Y.
  • the distance between the inner sides of the two first stoppers 226 corresponds to the distance between the outer sides of the two second stoppers 227.
  • the second brackets 32 on two adjacent second battery cell assemblies 30 abut against each other, which is beneficial to improve the stability of the connection between the adjacent second battery cell assemblies 30, reduce the number of supports between the adjacent second battery cell assemblies 30, and reduce the cost of the battery pack 100.
  • the second bracket 32 includes a third stopper 326 and a fourth stopper 327, the third stopper 326 and the fourth stopper 327 are respectively located on both sides of the second bracket 32 along the second direction X, and the third stopper 326 and the fourth stopper 327 are respectively extended outwardly away from each other along the second direction X.
  • the second brackets 32 of two adjacent second battery cell assemblies 30 are abutted by the third stopper 326 and/or the fourth stopper 327, which is conducive to improving the stability of the connection between the two adjacent second battery cell assemblies 30 and further improving the anti-seismic performance.
  • the length of the third stop portion 326 along the second direction X is equal to the length of the fourth stop portion 327 along the second direction X.
  • the third stop portion 326 of one second battery cell assembly 30 abuts against the second bracket 32 of the other second battery cell assembly 30, and the fourth stop portion 327 of one second battery cell assembly 30 abuts against the second bracket 32 of the other second battery cell assembly 30.
  • the length of the third stopper 326 along the second direction X is not equal to the length of the fourth stopper 327 along the second direction X. In one embodiment, the length of the third stopper 326 along the second direction X is greater than the length of the fourth stopper 327 along the second direction X, and of two second battery cell assemblies 30 adjacent to each other along the second direction X, the third stopper 326 of one second battery cell assembly 30 abuts against the first bracket 22 of the other second battery cell assembly 30.
  • the length of the third stopper 326 along the second direction X is less than Due to the length of the fourth stopping portion 327 along the second direction X, the fourth stopping portion 327 of one of the two second cell assemblies 30 adjacent to each other along the second direction X abuts against the first bracket 22 of the other second cell assembly 30 .
  • the third stopping portion 326 of one second battery cell assembly 30 abuts against the fourth stopping portion 327 of the other second battery cell assembly 30 .
  • the following further describes the case where the third stopper 326 of one second battery cell assembly 30 abuts against the fourth stopper 327 of another second battery cell assembly 30 (as shown in FIG. 25 ).
  • the third stopper 326 is provided with a third opening 3261, and along the third direction Y, the projection of the third opening 3261 is at least partially separated from the projection of the fourth stopper 327. In one embodiment, when viewed along the third direction Y, at least a portion of the third opening 3261 is exposed to the fourth stopper 327.
  • the third opening 3261 forms a heat dissipation channel for a coolant to pass through, which is conducive to the coolant taking away at least part of the heat on the second bracket 32, improving the heat dissipation of the second bracket 32, and improving the heat dissipation of the second battery cell assembly 30.
  • the third opening 3261 is disposed at the end of the third stopper 326 along the second direction X, and is a groove structure with an opening. In one embodiment, the third opening 3261 is a through hole.
  • the fourth stopper 327 is provided with a fourth opening 3271, and along the third direction Y, the projection of the fourth opening 3271 is at least partially separated from the projection of the third stopper 326. In one embodiment, when viewed along the third direction Y, at least a portion of the fourth opening 3271 is exposed to the third stopper 326.
  • the fourth opening 3271 forms a heat dissipation channel for a coolant to pass through, which is conducive to the coolant taking away at least part of the heat on the second bracket 32, thereby improving the heat dissipation of the second bracket 32 and the heat dissipation of the second battery cell assembly 30.
  • the fourth opening 3271 is disposed at the end of the fourth stopper 327 along the second direction X, and is a groove structure with an opening. In one embodiment, the fourth opening 3271 is a through hole.
  • the third opening 3261 is separated from the fourth opening 3271. In one embodiment, the third opening 3261 is connected to the fourth opening 3271.
  • the length of the third stop portion 326 along the second direction X is equal to the length of the fourth stop portion 327 along the second direction X.
  • the third stopper 326 and the fourth stopper 327 abut against each other along the third direction Y, which is conducive to connecting two second battery cell assemblies 30 adjacent to each other along the second direction X along the third direction Y to limit the position, further reducing the number of supports or fillers, and reducing the cost of the battery pack 100.
  • the number of the third stopper 326 is two, and the two third stoppers 326 are spaced apart along the third direction Y.
  • the number of the fourth stopper 327 is two, and the two fourth stoppers 327 are spaced apart along the third direction Y.
  • the distance between the inner sides of the two third stoppers 326 corresponds to the distance between the outer sides of the two fourth stoppers 327.
  • the battery pack 100 further includes a connection assembly 70, which is disposed on one side of the plurality of first battery cell assemblies 20, the plurality of second battery cell assemblies 30, and the heat sink 40 along the third direction Y.
  • the connection assembly 70 connects the plurality of first battery cell assemblies 20 and the plurality of second battery cell assemblies 30, so that the plurality of first battery cell assemblies 20 and the plurality of second battery cell assemblies 30 are connected.
  • the plurality of first battery cell assemblies 20 and the plurality of second battery cell assemblies 30 are connected in series.
  • a plurality of first battery cell assemblies 20 and a plurality of second battery cell assemblies 30 are connected to form a total positive terminal and a total negative terminal (not shown), and the total positive terminal and the total negative terminal are connected to a circuit board.
  • the battery pack 100 further includes a first connection terminal 81 and a second connection terminal 82 , wherein the first connection terminal 81 is connected to the main positive terminal and the circuit board, and the second connection terminal 82 is connected to the main negative terminal and the circuit board.
  • the battery pack 100 of the present application is connected by the first bracket 22 and the second bracket 32, and a gap 91 is formed between the first battery cell assembly 20 and the second battery cell assembly 30.
  • the heat sink 40 is arranged in the gap 91, which helps to reduce the risk of damage to the heat sink 40 due to squeezing of the battery cell assembly.
  • an embodiment of the present application further provides an electric device 200 , comprising the battery pack 100 described in any of the above embodiments, and the battery pack 100 can provide electrical energy to the electric device 200 .
  • the electric device 200 includes but is not limited to any one of a drone, an electric two-wheeled vehicle, and an electric tool.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池包及用电设备，电池包包括外壳、第一电芯组件、第二电芯组件和散热件；第一电芯组件包括第一支架，第二电芯组件包括第二支架，第二支架与第一支架连接，第一电芯组件和第二电芯组件形成间隙，散热件位于间隙；上述的电池包通过第一支架和第二支架连接，散热件设于第一电芯组件和第二电芯组件之间的间隙，有利于减少受到电芯组件的挤压而受到的损伤，提高电池包的使用寿命。

Description

电池包及用电设备
相关申请的交叉引用
本申请要求享有于2022年11月29日提交的名称为“电池包及用电设备”的中国专利申请202211512044.3的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及储能技术领域，特别涉及一种电池包及用电设备。
背景技术
电池包在使用过程中会发热，需要通过散热件来调控温度。当散热件设置在电池包外壳内时，容易受到电芯组件的挤压而受损，不利于电池包的使用。
发明内容
鉴于上述状况，有必要提供一种电池包，减少电池包外壳内的散热件因挤压受到的损伤，提高电池包的使用寿命。
本申请的实施例提供一种电池包，包括外壳、第一电芯组件、第二电芯组件和散热件。第一电芯组件设于外壳内，第一电芯组件包括第一电芯和第一支架，第一支架粘接于第一电芯的表面。第二电芯组件设于外壳内，第一电芯组件和第二电芯组件沿第一方向堆叠设置，第二电芯组件包括第二电芯和第二支架，第二支架粘接于第二电芯的表面，第二支架与第一支架连接，第一电芯组件和第二电芯组件形成间隙。散热件设于外壳内，并设于间隙。
上述的电池包通过第一支架和第二支架连接，散热件设于第一电芯组件和第二电芯组件之间的间隙，有利于降低因受到电芯组件的挤压而受损的风险。
在本申请的一些实施例中，第一支架和第二支架通过抵接相连，有利于提高第一电芯组件和第二电芯组件相互连接的稳定性，提高电池包的抗振性能。
在本申请的一些实施例中，第一支架和第二支架中的其中一个设有凸部，另一个设有凹部，凸部插接于凹部，散热件设有第一通孔，凸部的至少部分和/或凹部的至少部分容置于第一通孔。上述的第一支架和第二支架通过凸部和凹部相互插接实现限位连接，有利于提高第一支架和第二支架的连接稳定性，提高电池包的抗振性能。上述的凸部和/或凹部的至少部分容置于第一通 孔，有利于减少第一支架和第二支架之间的相互作用力对散热件的影响，降低第一支架和第二支架之间的相互作用力损坏散热件的风险。
在本申请的一些实施例中，凸部的至少部分设于凹部，使第一电芯组件和第二电芯组件之间形成间隙；沿第一方向，散热件的长度小于或等于间隙的长度，有利于进一步减小第一支架和第二支架之间的相互作用力对散热件的影响，减少第一支架和第二支架之间的相互作用力损坏散热件的风险。
在本申请的一些实施例中，第一支架包覆第一电芯沿第一方向的两侧的至少部分，有利于将第一电芯沿第一方向两侧的至少部分防护，减少第一电芯被损伤的风险。第二支架包覆第二电芯沿第一方向的两侧的至少部分，有利于将第二电芯沿第一方向两侧的至少部分防护，减少第二电芯被损伤的风险。
在本申请的一些实施例中，第一电芯包括第一壳体、第一电极组件和第一电极端子，第一电极组件设于第一壳体内部，第一电极端子连接于第一电极组件并伸出于第一壳体，第一壳体包括第一主体部和第一封边部，第一封边部连接于第一主体部，第一电极组件设于第一主体部内部，第一电极端子从第一封边部伸出，第一支架包覆第一封边部的至少部分，有利于将第一封边部的至少部分防护，减少第一壳体被损伤的风险。
在本申请的一些实施例中，第一支架包覆第一主体部的至少部分，有利于将第一主体部的至少部分防护，减少第一主体部被损伤的风险。
在本申请的一些实施例中，第一封边部包括相互连接的第一侧封部和第一顶封部，第一电极端子从第一顶封部伸出，第一支架包覆第一侧封部的至少部分和第一顶封部。
在本申请的一些实施例中，第一支架和第二支架中的其中一个设有凸部，另一个设有凹部，凸部设于凹部。沿第一方向，凸部的投影与第一主体部的投影有重叠，在第一支架连接第二支架时，有利于减少第一支架和第二支架之间的相互作用力对第一顶封部的影响，减少对第一电极端子的影响。
在本申请的一些实施例中，散热件连接于第一电芯组件和第二电芯组件，有利于提高第一电芯组件和第二电芯组件的散热，减小热量对第一电芯组件和第二电芯组件的影响。
在本申请的一些实施例中，第一电芯组件的数量为多个，多个第一电芯组件沿第二方向堆叠设置，第二方向垂直于第一方向；第二电芯组件的数量为多个，多个第二电芯组件沿第二方向堆叠设置；沿第一方向，一个第一电芯组件和一个第二电芯组件排列设置，第一电芯组件的第一支架与第二电芯组件的第二支架相互连接。
在本申请的一些实施例中，沿第二方向，相邻的两个第一支架相互连接，和/或，相邻的两个第二支架相互连接，有利于提高相邻第一支架和/或第二之间相互连接的稳定性，进一步提高抗震性能。
在本申请的一些实施例中，第一支架还包括第一止挡部和第二止挡部， 第一止挡部和第二止挡部分别位于第一支架沿第二方向上的两侧，第二方向垂直于第一方向，第一止挡部和第二止挡部分别沿第二方向相互背离的向外延伸设置；沿第二方向，相邻两个第一支架通过第一止挡部和/或第二止挡部形成抵接，有利于提高相邻两个第一电芯组件之间相互连接的稳定性，进一步提高抗震性能。第二支架还包括第三止挡部和第四止挡部，第三止挡部和第四止挡部分别位于第二支架沿第二方向上的两侧，第三止挡部和第四止挡部分别沿第二方向相互背离的向外延伸设置；沿第二方向，相邻两个第二支架通过第三止挡部和/或第四止挡部形成抵接，有利于提高相邻两个第二电芯组件之间相互连接的稳定性，进一步提高抗震性能。
在本申请的一些实施例中，第一止挡部设有第一开口，沿第三方向观察，第一开口的至少部分显露于第二止挡部，第一开口供冷却物穿过，形成散热通道，有利于散热；和/或，第二止挡部设有第二开口，沿第三方向观察，第二开口的至少部分显露于第一止挡部，第二开口供冷却物穿过，形成散热通道，有利于散热。
在本申请的一些实施例中，第一电芯包括第一壳体、第一电极端子和第三电极端子，第一电极端子和第三电极端子分别从第一壳体相对的两侧伸出于第一壳体；第一电芯组件包括多个第一电芯，多个第一电芯沿第三方向排列设置，沿第三方向相邻的两个第一电芯中，其中一个第一电芯的第一电极端子和另外一个第一电芯的第三电极端子连接并形成第一连接区域，第一支架包覆第一连接区域的至少部分和该相邻的两个第一电芯的第一壳体的至少部分，第三方向垂直于第一方向。第二电芯包括第二壳体、第二电极端子和第四电极端子，第二电极端子和第四电极端子分别从第二壳体相对的两侧伸出于第二壳体；第二电芯组件包括多个第二电芯，多个第二电芯沿第三方向排列设置，沿第三方向相邻的两个第二电芯中，其中一个第二电芯的第二电极端子和另外一个第二电芯的第四电极端子连接并形成第二连接区域，第二支架包覆第二连接区域的至少部分和该相邻的两个第二电芯的第二壳体的至少部分。第一支架包覆第一连接区域的部分形成沿第一方向贯穿的第一通道，和/或，第二支架包覆第二连接区域的部分形成沿第一方向贯穿的第二通道。
上述的第一通道和第二通道有利于提高第一支架和第二支架的表面积，提高散热面积，还形成冷却物通过的散热通道，提高第一电芯组件和第二电芯组件的散热。
在本申请的一些实施例中，外壳设有第二通孔和第三通孔；第一通道连通第二通孔和第三通孔，和/或，第二通道连通第二通孔和第三通孔。电池包外的冷却物通过第二通孔和三通孔通过第一通道和/或第二通道，进一步提高第一支架和/或第二支架的散热效果，提高第一电芯组件和第二电芯组件的散热。
在本申请的一些实施例中，第一支架通过灌注的工艺形成于第一电芯的至少部分表面，和/或，第二支架通过灌注的工艺形成于第二电芯的至少部分 表面。
本申请的实施例还提供一种用电设备，包括上述任一实施例所述的电池包。
上述的用电设备中，第一电芯组件和第二电芯组件形成间隙，散热件设于间隙，有利于减少第一电芯组件和第二电芯组件之间的散热件因挤压受到的损伤，有利于提高电池包的使用寿命，减少电池包使用寿命对用电设备的影响。
附图说明
图1是本申请的一个实施例中电池包的结构示意图。
图2是图1所示电池包的***图。
图3是本申请的一个实施例中第一电芯组件、第二电芯组件和散热件堆叠的第一视图。
图4是本申请的一个实施例中第一电芯的结构示意图。
图5是本申请的一个实施例中多个第一电芯沿第三方向排列的结构示意图。
图6是本申请的一个实施例中第一支架包覆图5所示结构的部分表面的结构示意图。
图7是图5所示结构的扩展实施例的结构示意图。
图8是本申请的一个实施例中第一支架包覆图7所示结构的部分表面的结构示意图。
图9是本申请的一个实施例中第二电芯的结构示意图。
图10是本申请的一个实施例中多个第二电芯沿第三方向排列的结构示意图。
图11是本申请的一个实施例中第二支架包覆图10所示结构的部分表面的结构示意图。
图12是图10所示结构的扩展实施例的结构示意图。
图13是本申请的一个实施例中第二支架包覆图12所示结构的部分表面的结构示意图。
图14是本申请的一个实施例中第一电芯组件、第二电芯组件和散热件堆叠的第二视图。
图15是图14中XV区域的局部放大图。
图16是本申请的一个实施例中第一电芯组件、第二电芯组件和散热件的***图。
图17是图16所示的***图的另一视图。
图18是图16中XVIII区域的局部放大图。
图19是图18所示结构的扩展实施例的结构示意图。
图20是图18所示结构的扩展实施例的结构示意图。
图21是图18所示结构的扩展实施例的结构示意图。
图22是图16中XXII区域的局部放大图。
图23是图22所示结构的扩展实施例的结构示意图。
图24是图22所示结构的扩展实施例的结构示意图。
图25是图22所示结构的扩展实施例的结构示意图。
图26是本申请的一个实施例中用电设备的结构示意图。
主要元件符号说明
电池包                                100
外壳                                  10
第一壁                                11
第二通孔                              111
第二壁                                12
第三通孔                              121
第三壁                                13
第四壁                                14
第五壁                                15
第六壁                                16
第一电芯组件                          20
第一电芯                              21
第一壳体                              211
第一主体部                            2111
第一封边部                            2112
第一侧封部                            21121
第一顶封部                            21122
第一电极端子                          212
第三电极端子                          213
第一连接区域                          214
第一支架                              22
第一侧面                              221
第一凸部                              222
第一凹部                              223
第三凸部                              224
第三凹部                              225
第一止挡部                            226
第一开口                              2261
第二止挡部                            227
第二开口                              2271
第一通道                              228
第二电芯组件                          30
第二电芯                              31
第二壳体                              311
第二主体部                            3111
第二封边部                            3112
第二侧封部                            31121
第二顶封部                            31122
第二电极端子                          312
第四电极端子                          313
第二连接区域                          314
第二支架                              32
第二侧面                              321
第二凹部                              322
第二凸部                              323
第四凹部                              324
第四凸部                              325
第三止挡部                            326
第三开口                              3261
第四止挡部                            327
第四开口                              3271
第二通道                              328
散热件                                40
第一表面                              41
第二表面                              42
第一通孔                              43
第一区域                              44
第二区域                              45
第一导热件                            51
第二导热件                            52
连接组件                              70
第一连接端子                          81
第二连接端子                          82
间隙                                  91
用电设备                              200
第一方向                              Z
第二方向                              X
第三方向                              Y
如下具体实施方式将结合上述附图进一步说明本申请。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
需要说明的是，当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中设置的元件。当一个元件被认为是“设置在”另一个元件，它可以是直接设置在另一个元件上或者可能同时存在居中设置的元件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
本申请的实施例提供一种电池包，包括外壳、第一电芯组件、第二电芯组件和散热件。第一电芯组件设于外壳内，第一电芯组件包括第一电芯和第一支架，第一支架粘接于第一电芯的表面。第二电芯组件设于外壳内，第一电芯组件和第二电芯组件沿第一方向堆叠设置，第二电芯组件包括第二电芯和第二支架，第二支架粘接于第二电芯的表面，第二支架与第一支架连接，第一电芯和第二电芯形成间隙。散热件设于外壳内，并设于间隙。
上述的电池包通过第一支架和第二支架连接，散热件设于第一电芯组件和第二电芯组件之间的间隙，有利于减少散热件因电芯组件的挤压受到的损伤，提高电池包使用寿命。
下面结合附图，对本申请的实施例作进一步的说明。
如图1、图2和图3所示，本申请的实施方式提供一种电池包100，包括外壳10、第一电芯组件20、第二电芯组件30、散热件40和电路板(图未示)，第一电芯组件20、第二电芯组件30、散热件40和电路板设于外壳10内，第二电芯组件30和第一电芯组件20沿第一方向Z堆叠设置，第一电芯组件20和第二电芯组件30均连接于电路板。
在一实施例中，电路板控制第一电芯组件20和第二电芯组件30充电和放电。在一实施例中，电路板包括BMS组件(Battery Management System)，BMS组件包括多个电子元器件，多个电子元器件实现对电芯的数据采集、控制、保护、通讯、电量计算、信号传输、电能传输等功能。
第一电芯组件20包括第一电芯21和第一支架22，第一支架22粘接于第一电芯21的至少部分表面。
第二电芯组件30包括第二电芯31和第二支架32，第二支架32粘接于第二电芯31的至少部分表面，第二支架32与第一支架22连接，第一电芯组 件20和第二电芯组件30之间形成间隙91，散热件40设于间隙91内。
上述的电池包100通过第一支架22和第二支架32连接，散热件40设于第一电芯组件20和第二电芯组件30之间的间隙91，有利于减少散热件40因电芯组件的挤压受到的损伤，提高电池包使用寿命。散热件40有利于提高第一电芯组件20和第二电芯组件30的散热，减少热量对第一电芯组件20和第二电芯组件30的影响。
在一实施例中，第一支架22通过灌注工艺形成于第一电芯21的表面。
灌注工艺可以包括注塑工艺和灌胶工艺中的至少一种。
以注塑工艺为例，可以通过注塑装置将注塑材料(例如为绝缘材料)熔化，使融化的注塑材料包覆第一电芯21的表面，注塑材料固化后形成第一支架22，由此第一支架22形成于第一电芯21的表面。
以灌胶工艺为例，通过灌胶工艺使绝缘材料(例如可流动的绝缘材料)包覆第一电芯21的表面，绝缘材料固化后形成第一支架22，由此第一支架22形成于第一电芯21的表面。
在一实施例中，第一支架22通过注塑工艺成型于第一电芯21的表面，第一支架22粘接第一电芯21，有利于提高第一支架22连接第一电芯21的稳定性。
在一实施例中，第一支架22通过灌胶的方式形成于第一电芯21的部分表面，第一支架22粘接第一电芯21，有利于提高第一支架22连接第一电芯21的稳定性。
在一实施例中，第一支架22选用导热性能良好的塑胶材质，可有利于第一电芯21将自身的热量散发出去，提高第一电芯21的散热。在一实施例中，第一支架22选用的材质为混合物，该混合物由导热填料填充于高分子基体材料后形成，可选的，高分子基体材料包括但不限于聚苯硫醚(PPS)、尼龙、合成橡胶(TPE)、聚碳酸酯(PC)、聚丙烯(PP)、聚邻苯二甲酰胺(PPA)和聚醚醚酮(PEEK)中的任一种，导热填料包括但不限于碳化硅、氧化铝、石墨、纤维状高导热碳粉和鳞片状高导热碳粉中的任一种。
在一实施例中，第二支架32通过灌注工艺形成于第二电芯31的表面。
在一实施例中，第二支架32通过注塑成型于第二电芯31的表面，第二支架32粘接第二电芯31，有利于提高第二支架32连接第二电芯31的稳定性。
在一实施例中，第二支架32通过灌胶的方式形成于第二电芯31的部分表面，第二支架32粘接第二电芯31，有利于提高第二支架32连接第二电芯31的稳定性。
在一实施例中，第二支架32选用导热性能良好的塑胶材质，可有利于第二电芯31将自身的热量散发出去，提高第二电芯31的散热速率。在一实施例中，第二支架32选用的材质为混合物，该混合物由导热填料填充于高分子基体材料后形成，可选的，高分子基体材料包括但不限于聚苯硫醚(PPS)、 尼龙、合成橡胶(TPE)、聚碳酸酯(PC)、聚丙烯(PP)、聚邻苯二甲酰胺(PPA)和聚醚醚酮(PEEK)中的任一种，导热填料包括但不限于碳化硅、氧化铝、石墨、纤维状高导热碳粉和鳞片状高导热碳粉中的任一种。
在一实施例中，第一支架22和第二支架32相互连接。在一实施例中，第一支架22和第二支架32沿第一方向Z通过抵接相连，使第一电芯组件20和第二电芯组件30形成间隙91，有利于减少第一电芯组件20和第二电芯组件30之间的散热件40因电芯组件挤压受到的损伤，提高了电池包的使用寿命。
在一实施例中，间隙91的部分位于第一支架22和第二支架32之间。
在一实施例中，散热件40连接第一电芯组件20和第二电芯组件30，有利于提高第一电芯组件20和第二电芯组件30的散热，减小热量对第一电芯组件20和第二电芯组件30的影响。
在一实施例中，散热件40包括第一表面41与第二表面42，第一表面41与第二表面42分别位于散热件40沿第一方向Z相对的两侧，第一表面41朝向第一电芯组件20，第二表面42朝向第二电芯组件30。在一实施例中，第一表面41连接第一电芯组件20。在一实施例中，第二表面42连接第二电芯组件30。
散热件40设置于第一电芯组件20和第二电芯组件30之间，有利于吸收第一电芯组件20和第二电芯组件30上传递的热量，有利于加快第一电芯组件20和第二电芯组件30散热，减少热量对第一电芯组件20和第二电芯组件30性能的影响。并且，第一电芯组件20和第二电芯组件30通过第一支架22和第二支架32相互连接而相互支撑固定，散热件40设置于第一电芯组件20和第二电芯组件30之间，有利于减少第一支架22和第二支架32之间的相互作用力对散热件40的风险。
在一实施例中，外壳10包括第一壁11、第二壁12、第三壁13、第四壁14、第五壁15和第六壁16，第一壁11和第二壁12排列设置，第三壁13和第四壁14排列设置，第五壁15和第六壁16排列设置，第五壁15和第六壁16均连接第一壁11、第二壁12、第三壁13和第四壁14，第一壁11、第二壁12、第三壁13、第四壁14、第五壁15和第六壁16围设形成容纳第一电芯组件20、第二电芯组件30、散热件40和电路板的容腔空间。
为了更好的对电池包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Z方向为第一方向，X方向为第二方向，Y方向为第三方向，其中，第一方向Z为第一壁11和第二壁12排列的方向，第二方向X为第三壁13和第四壁14排列的方向，第三方向Y为第五壁15和第六壁16排列的方向。
在一实施例中，第一电芯21和第二电芯31为软包电芯，第一电芯21和第二电芯31通过第一支架22和第二支架32连接实现限位和保护，利于减少填充物的数量，降低电池包100的成本。在其他实施例中，第一电芯21 和第二电芯31也可以为硬壳电芯(图未示)。
为了便于理解及描述，本申请中所述电芯均以软包电芯为例做进一步的说明。
在一实施例中，散热件40包括液冷板和风冷板中的任一个。
如图4所示，在一实施例中，第一电芯21包括第一壳体211、第一电极组件(图未示)、第一电极端子212和第三电极端子213，第一电极组件设于第一壳体211内部，第一电极端子212和第三电极端子213均连接于第一电极组件并伸出于第一壳体211。
第一电极端子212和第三电极端子213中的其中一个为正电极端子，第一电极端子212和第三电极端子213中的另一个为负电极端子。
在一实施例中，第一电极组件包括正极片、负极片和隔膜，隔膜设于正极片和负极片之间，正极片、隔膜和负极片卷绕或层叠设置形成第一电极组件，第一电极端子212连接于正极片，第三电极端子213连接于负极片。
在一实施例中，第一壳体211包括第一主体部2111和第一封边部2112，第一封边部2112连接于第一主体部2111并从第一主体部2111伸出，第一电极组件设于第一主体部2111内部，第一电极端子212和第三电极端子213从第一封边部2112伸出。在一实施例中，第一封边部2112包括相互连接的第一侧封部21121和第一顶封部21122，第一电极端子212和第三电极端子213从第一顶封部21122伸出。
在一实施例中，第一电极端子212和第三电极端子213分别位于第一主体部2111相对的两端。第一顶封部21122的数量为两个，第一侧封部21121的数量为两个，两个第一顶封部21122分别位于第一主体部2111相对的两侧，两个第一侧封部21121分别位于第一主体部2111相对的两侧，每一第一顶封部21122均连接两个第一侧封部21121，第一电极端子212和第三电极端子213分别从两个第一顶封部21122伸出。在其他实施例中，第一电极端子212和第三电极端子213位于第一主体部2111的同侧(图未示)。
如图5和图6所示，在一实施例中，第一电芯组件20中第一电芯21的数量为多个，多个第一电芯21沿第三方向Y排列设置，沿第三方向Y相邻的两个第一电芯21相互连接。在一实施例中，第一电芯组件20中沿第三方向Y排列的第一电芯21的数量为两个、三个、四个或更多个。
作为示例性的，下面以第一电芯组件20中沿第三方向Y排列的第一电芯21的数量为三个为例作进一步的说明。
在一实施例中，沿第三方向Y排列的三个第一电芯21依次串联连接，一个第一电芯21的第一电极端子212和相邻的第一电芯21的第三电极端子213相连接。可选的，第一电极端子212和第三电极端子213接触连接，并形成第一连接区域214。
在一实施例中，第一支架22包覆于第一电极端子212的部分表面和第一壳体211的部分表面，使第一电极端子212稳定的连接于第一壳体211，并 可减少针对第一电极端子212的支撑物数量。可选的，第一支架22完全包覆第一电极端子212连接的第一顶封部21122，并包覆第一主体部2111的部分和第一侧封部21121的部分，有利于进一步提高第一支架22连接第一壳体211的稳定性，减少第一电极端子212损坏的风险。
在一实施例中，第一支架22包覆于第三电极端子213的部分表面和第一壳体211的部分表面，使第三电极端子213稳定的连接于第一壳体211，并可减少针对第三电极端子213部位的支撑物数量。可选的，第一支架22完全包覆第三电极端子213连接的第一顶封部21122，并包覆第一主体部2111的部分和第一侧封部21121的部分，有利于进一步提高第一支架22连接第一壳体211的稳定性，减少第一电极端子212损坏的风险。
在一实施例中，第一支架22包覆第一电极端子212位于第一壳体211外的部分，第一支架22包覆第三电极端子213位于第一壳体211外的部分。
在一实施例中，第一支架22包覆于第一连接区域214的至少部分表面和第一连接区域214两侧的两个第一壳体211的至少部分表面，使第一电极端子212和第三电极端子213稳定的相互连接及稳定的连接于第一壳体211，有利于减少针对第一电极端子212和第三电极端子213的支撑物数量，提高第一电极端子212和第三电极端子213连接的稳定性。可选的，第一支架22完全包覆第一连接区域214的表面，并包覆位于第一连接区域214两侧的第一顶封部21122，有利于进一步提高第一支架22连接第一壳体211的稳定性，减少第一电极端子212和第三电极端子213损坏的风险。
在一实施例中，第一支架22一次成型于一个或多个第一电芯21的表面，形成第一电芯组件20。在一实施例中，第一支架22通过灌注的工艺形成于一个或多个第一电芯21的至少部分表面，第一支架22与一个或多个第一电芯21形成一个组件，多个组件再次通过灌注的工艺相互连接形成第一电芯组件20。
在一实施例中，第一支架22完全包覆第一壳体211(图未示)，第一支架22可起到防护作用，减少第一壳体211被外物损伤的风险，提高电池包100的安全性能。
作为示例性的，下面以第一支架22包覆第一壳体211的部分、第一支架22包覆第一电极端子212位于第一壳体211外的部分，第一支架22包覆第三电极端子213位于第一壳体211外的部分为例作进一步的说明。
如图7和图8所示，在一实施例中，多个第一电芯21沿第二方向X排列设置。在一实施例中，沿第二方向X，相邻的两个第一电芯21接触连接。
在一实施例中，沿第二方向X排列的第一电芯21的数量为两个、三个、四个或更多个。
作为示例性的，下面以沿第二方向X排列的第一电芯21的数量为三个为例作进一步的说明。
可以理解的，第一电芯组件20中，沿第三方向Y上有三个第一电芯21 排列设置，沿第二方向X上有三个第一电芯21排列设置，第一电芯21的总数量为九个。
在一实施例中，沿第二方向X排列的三个第一电芯21相互并联的连接，其中，三个第一电极端子212位于三个第一电芯21的同侧并相互连接形成一个并联端子，三个第三电极端子213位于三个第一电芯21的另一侧并相互连接形成另一个并联端子，该两个并联端子连接形成第一连接区域214。
如图9所示，在一实施例中，第二电芯31包括第二壳体311、第二电极组件(图未示)、第二电极端子312和第四电极端子313，第二电极组件设于第二壳体311内部，第二电极端子312和第四电极端子313连接于第二电极组件并伸出于第二壳体311。
在一实施例中，第二电极端子312和第四电极端子313中的其中一个为正电极端子，第二电极端子312和第四电极端子313中的另一个为负电极端子。
在一实施例中，第二壳体311包括第二主体部3111和第二封边部3112，第二封边部3112连接于第二主体部3111并从第二主体部3111伸出，第二电极组件设于第二主体部3111内部，第二电极端子312和第四电极端子313从第二封边部3112伸出。在一实施例中，第二封边部3112包括相互连接的第二侧封部31121和第二顶封部31122，第二电极端子312和第四电极端子313从第二顶封部31122伸出。
在一实施例中，第二电极端子312和第四电极端子313分别位于第二主体部3111相对的两端。第二顶封部31122的数量为两个，第二侧封部31121的数量为两个，两个第二顶封部31122分别位于第二主体部3111相对的两侧，两个第二侧封部31121分别位于第二主体部3111相对的两侧，每一第二顶封部31122均连接两个第二侧封部31121，第二电极端子312和第四电极端子313分别从两个第二顶封部31122伸出。在其他实施例中，第二电极端子312和第四电极端子313位于第一主体部2111的同侧(图未示)。
作为示例性的，下面以第一电极端子212和第三电极端子213分别位于第一电芯21相对的两端，第二电极端子312和第四电极端子313分别位于第二电芯31相对的两端为例作进一步的说明。
如图10和图11所示，在一实施例中，第二电芯组件30中第二电芯31的数量为多个，多个第二电芯31沿第三方向Y排列设置，沿第三方向Y相邻的两个第二电芯31相互连接。在一实施例中，第二电芯组件30中沿第三方向Y排列的第二电芯31的数量为两个、三个、四个或更多个。
作为示例性的，下面以第二电芯组件30中沿第三方向Y排列的第二电芯31的数量为三个为例作进一步的说明。
在一实施例中，沿第三方向Y排列的三个第二电芯31依次串联连接，一个第二电芯31的第二电极端子312和相邻的第二电芯31的第四电极端子313相连接。可选的，第二电极端子312和第四电极端子313接触连接，并形成 第二连接区域314。
在一实施例中，第二支架32包覆于第二电极端子312的部分表面和第二壳体311的部分表面，使第二电极端子312稳定的连接于第二壳体311，并可减少第二电极端子312部位的支撑物数量。可选的，第二支架32完全包覆第二电极端子312连接的第二顶封部31122，并包覆第二主体部3111的部分和第二侧封部31121的部分，有利于进一步提高第二支架32连接第二壳体311的稳定性，减少第二电极端子312损坏的风险。
在一实施例中，第二支架32包覆于第四电极端子313的部分表面和第二壳体311的部分表面，使第四电极端子313稳定的连接于第二壳体311，并可减少第四电极端子313部位的支撑物数量。可选的，第二支架32完全包覆第四电极端子313连接的第二顶封部31122，并包覆第二主体部3111的部分和第二侧封部31121的部分，有利于进一步提高第二支架32连接第二壳体311的稳定性，减少第四电极端子313损坏的风险。
在一实施例中，第二支架32包覆第二电极端子312位于第二壳体311外的部分，第二支架32包覆第四电极端子313位于第二壳体311外的部分。
在一实施例中，第二支架32包覆于第二连接区域314的至少部分表面和第二连接区域314两侧的两个第二壳体311的至少部分表面，使第二电极端子312和第四电极端子313稳定的相互连接及稳定的连接于第二壳体311，有利于减少针对第二电极端子312和第四电极端子313的支撑物数量，提高第二电极端子312和第四电极端子313连接的稳定性。可选的，第二支架32完全包覆第二连接区域314的表面，并包覆位于第二连接区域314两侧的第二顶封部31122，有利于进一步提高第二支架32连接第二壳体311的稳定性，减少第二电极端子312和第四电极端子313损坏的风险。
在一实施例中，第二支架32一次成型于一个或多个第二电芯31的表面，形成第二电芯组件30。在一实施例中，第二支架32通过灌注的工艺形成于一个或多个第二电芯31的至少部分表面，第二支架32与一个或多个第二电芯31形成一个组件，多个组件再次通过灌注的工艺相互连接形成第二电芯组件30。
在一实施例中，第二支架32完全包覆第二壳体311(图未示)，第二支架32可起到防护作用，减少第二壳体311被外物损伤的风险，提高电池包100的安全性能。
作为示例性的，下面以第二支架32包覆第二壳体311的部分、第二支架32包覆第二电极端子312位于第二壳体311外的部分，第二支架32包覆第四电极端子313位于第二壳体311外的部分。为例作进一步的说明。
如图12和图13所示，在一实施例中，多个第二电芯31沿第二方向X排列设置。在一实施例中，沿第二方向X，相邻的两个第二电芯31接触连接。
在一实施例中，沿第二方向X排列的第二电芯31的数量为两个、三个、四个或更多个。
作为示例性的，下面以沿第二方向X排列的第二电芯31的数量为三个为例作进一步的说明。
可以理解的，第二电芯组件30中，沿第三方向Y上有三个第二电芯31排列设置，沿第二方向X上有三个第二电芯31排列设置，第二电芯31的总数量为九个。
在一实施例中，沿第二方向X排列的三个第二电芯31相互并联的连接，其中，三个第二电极端子312位于三个第二电芯31的同侧并相互连接形成一个并联端子，三个第四电极端子313位于三个第二电芯31的另一侧并相互连接形成另一个并联端子，该两个并联端子连接形成第二连接区域314。
请参阅图2和图3，在一实施例中，第一电芯组件20的数量为多个，多个第一电芯组件20沿第二方向X排列设置。在一实施例中，第二电芯组件30的数量为多个，多个第二电芯组件30沿第二方向X排列设置。散热件40设于多个第一电芯组件20和多个第二电芯组件30之间，散热件40吸收多个第一电芯组件20和多个第二电芯组件30上传递的热量，有利于加快第一电芯组件20和多个第二电芯组件30的散热，减少热量对第一电芯组件20和多个第二电芯组件30性能的影响。
沿第一方向Z上，第一电芯组件20和第二电芯组件30相互对应并堆叠连接，一个第一电芯组件20和一个第二电芯组件30堆叠连接。沿第一方向Z，相互对应的第一电芯组件20和第二电芯组件30中，第一电芯组件20的第一支架22连接于第二电芯组件30的第二支架32，使第一电芯组件20与第二电芯组件30相互支撑限位，使得第一电芯21与第二电芯31沿第一方向Z间隔设置。
如图14和图15所示，在一实施例中，相互连接的一个第一电芯组件20和一个第二电芯组件30构成一个组件，多个组件沿第二方向X排列设置，多个组件的间隙91相互连通。
在一实施例中，以沿第一方向Z相互对应并堆叠连接的第一电芯组件20和第二电芯组件30为例，第一电芯组件20的第一支架22与第二电芯组件30的第二支架32相互抵接并支撑限位。
在一实施例中，第一电芯组件20的第一支架22和第二电芯组件30的第二支架32中的其中一个设有凸部，第一支架22和第二支架32中的另一个设有凹部，凸部的至少部分设于凹部，使得第一支架22和第二支架32相互连接以支撑限位。
在一实施例中，第一支架22包括第一侧面221和第一凸部222，沿第一方向Z上，第一侧面221朝向第二支架32，第一凸部222伸出于第一侧面221。第二支架32包括第二侧面321和第二凹部322，沿第一方向Z上，第二侧面321和第一侧面221相互面对，第二凹部322设于第二侧面321，第二凹部322的开口朝向第一侧面221，第一凸部222的至少部分设于第二凹部322，使第一支架22和第二支架32沿第一方向Z上相互连接以支撑限位，形成间 隙91。
在一实施例中，沿第一方向Z上，间隙91的最小长度为L1，散热件40的最大长度为L2，满足L2≤L1，可减少第一支架22和第二支架32之间的相互作用力对散热件40的影响，减少第一支架22和第二支架32之间的相互作用力损坏散热件40的风险。可选的，L2＝L1。可选的，L2＜L1。
在一实施例中，第一支架22包括第一凹部223，第一凹部223设于第一侧面221，沿第一方向Z上，第一凹部223的开口朝向第二侧面321。第二支架32包括第二凸部323，第二凸部323设于第二侧面321并伸出于第二侧面321。第二凸部323的部分设于第一凹部223。
在一实施例中，第一支架22还包括第三凸部224，第三凸部224和第一凸部222分别设于第一支架22沿第一方向Z上相对的两端，第三凸部224的延伸方向与第一凸部222的延伸方向相反。在一实施例中，第一支架22还包括第三凹部225，第三凹部225和第一凹部223分别设于第一支架22沿第一方向Z上相对的两端。
第一支架22沿第一方向Z上的两端均设置凸部或凹部，在装配第一电芯组件20和第二电芯组件30时，第一电芯组件20沿第一方向Z的两端均能够连接第二电芯组件30，有利于提高第一电芯组件20和第二电芯组件30连接的装配效率。并且，还可在第一电芯组件20背离第二电芯组件30的一侧继续堆叠其他电芯组件，提高电池包100的容量。
在一实施例中，第二支架32还包括第四凹部324，第四凹部324和第二凹部322分别设于第二支架32沿第一方向Z上相对的两端。在一实施例中，第二支架32还包括第四凸部325，第四凸部325和第二凹部322分别设于第二支架32沿第一方向Z上相对的两端。
第二支架32沿第一方向Z上的两端均设置凸部或凹部，在装配第一电芯组件20和第二电芯组件30时，第二电芯组件30沿第一方向Z的两端均能够连接第一电芯组件20，有利于提高第二电芯组件30和第一电芯组件20连接的装配效率。并且，还可在第二电芯组件30背离第一电芯组件20的一侧继续堆叠其他电芯组件，提高电池包100的容量。
请结合参阅图14、图15、图16和图17，在一实施例中，沿第一方向Z上，所有的第一电芯21的投影与散热件40的投影均有重叠，所有的第一电芯21上的部分热量可通过散热件40传递出去，可提高电池包100的散热，及有利于减少不同的第一电芯组件20之间的温差，减少热量对电池包100的影响。在一实施例中，沿第一方向Z上，所有的第一壳体211的投影均位于散热件40的投影内。
在一实施例中，所有的第二电芯31的投影与散热件40的投影均有重叠，所有的第二电芯31上的部分热量可通过散热件40传递出去，可提高电池包100的散热，及有利于减少不同的第二电芯组件30之间的温差，减少热量对电池包100的影响。在一实施例中，沿第一方向Z上，所有的第二壳体311 的投影均位于散热件40的投影内。
在一实施例中，散热件40上设有沿第一方向Z贯穿的第一通孔43，第一通孔43贯穿第一表面41和第二表面42，第一凸部222的部分和/或第二凹部322的部分容置于第一通孔43，可减少第一支架22和第二支架32之间的相互作用力对散热件40的影响，减少第一支架22和第二支架32之间的相互作用力损坏散热件40的风险。
在一实施例中，散热件40上第一通孔43的数量为多个，多个第一通孔43沿第二方向X间隔的排列设置，多个第一通孔43沿第三方向Y间隔的排列设置。在一实施例中，第一通孔43的数量和位置与相互抵接的凸部和凹部的数量及位置对应，使每一相互抵接的凸部和凹部均穿过对应的第一通孔43，减少第一支架22和第二支架32之间的相互作用力损坏散热件40的风险。
在一实施例中，电池包100还包括第一导热件51，第一导热件51设于第一表面41和第一电芯组件20之间，第一导热件51可提高第一电芯组件20和散热件40之间的热交换效率，提高电池包100的散热。在一实施例中，第一导热件51通过接触方式连接第一表面41和第一电芯组件20。
在一实施例中，第一导热件51涂覆于第一表面41，可提高第一导热件51和散热件40之间的热交换效率。在一实施例中，第一导热件51接触连接第一壳体211，可提高第一导热件51与第一电芯21之间的热交换效率。在一实施例中，第一导热件51由导热胶填充于第一表面41和第一电芯21之间后固化形成。
在一实施例中，电池包100还包括第二导热件52，第二导热件52设于第二表面42和第二电芯组件30之间，第二导热件52可提高第二电芯组件30和散热件40之间的热交换效率，提高电池包100的散热。在一实施例中，第二导热件52通过接触方式连接第二表面42和第二电芯组件30。
在一实施例中，第二导热件52涂覆于第二表面42，可提高第二导热件和散热件40之间的热交换效率。在一实施例中，第二导热件52接触连接第二壳体311，可提高第二导热件52与第二电芯31之间的热交换效率。在一实施例中，第二导热件52由导热胶填充于第二表面42和第二电芯31之间后固化形成。
在一实施例中，第一支架22连接于散热件40，第二支架32连接于散热件40，第一支架22和第二支架32通过连接散热件40实现间接连接。在一实施例中，散热件40的第一表面41设有第一凹槽(图未示)，第二表面42设有第二凹槽(图未示)，第一凹槽由第一表面41凹陷形成，第二凹槽由第二表面42凹陷形成，第一支架22上的第一凸部222插接于第一凹槽，第二支架32上的第二凸部323插接于第二凹槽。
在一实施例中，散热件40的数量为多个(图未示)。可选的，多个散热件40沿第二方向X排列设置。可选的，多个散热件40沿第三方向Y排列设置。
在一实施例中，散热件40的数量为一个。在一实施例中，散热件40的第一表面41包括三个第一区域44，三个第一区域44沿第三方向Y间隔的排列设置，第一导热件51设于第一区域44内。沿第二方向X上堆叠设置的多个第一电芯21对应于一个第一区域44，在一实施例中，沿第一方向Z上，所有的第一壳体211的投影与第一区域44的投影均有重叠。
在一实施例中，第一通孔43设于相邻的两个第一区域44之间。
在一实施例中，散热件40的第二表面42包括三个第二区域45，三个第二区域45沿第三方向Y间隔的排列设置，第二导热件52设于第二区域45内。沿第二方向X上堆叠设置的多个第二电芯31对应于一个第二区域45，在一实施例中，沿第一方向Z上，所有的第二壳体311的投影与第二区域45的投影均有重叠。
在一实施例中，第一通孔43设于相邻的两个第二区域45之间。
请结合参阅图4、图8、图9和图13，在一实施例中，第一支架22包覆第一主体部2111沿第一方向Z上的两侧的至少部分，在第一支架22连接第二支架32时，有利于减少第一支架22和第二支架32之间的相互作用力对第一顶封部21122的影响。
在一实施例中，第一支架22包覆第一侧封部21121的至少部分，有利于进一步减少第一支架22和第二支架32之间的相互作用力对第一顶封部21122的影响，减少第一顶封部21122变形的风险。
在一实施例中，沿第一方向Z，第一凸部222的投影与第一主体部2111的投影有重叠，在第一支架22连接第二支架32时，有利于减少第一支架22和第二支架32之间的相互作用力对第一顶封部21122的影响。
在一实施例中，第二支架32包覆第二主体部3111沿第一方向Z上的两侧的至少部分，在第一支架22连接第二支架32时，有利于减少第一支架22和第二支架32之间的相互作用力对第二顶封部31122的影响。
在一实施例中，第二支架32包覆第二侧封部31121的至少部分，有利于进一步减少第一支架22和第二支架32之间的相互作用力对第二顶封部31122的影响，减少第二顶封部31122变形的风险。
在一实施例中，沿第一方向Z，第二凹部322的投影与第二主体部3111的投影有重叠，在第一支架22连接第二支架32时，有利于减少第一支架22和第二支架32之间的相互作用力对第二顶封部31122的影响。
请结合参阅图1、图2、图7和图8，在一实施例中，第一支架22包覆第一连接区域214的部分形成第一通道228，第一通道228贯穿第一支架22。第一通道228可形成供冷却物通过的散热通道，提高第一连接区域214的散热，提高第一电芯组件20的散热。可选的，第一通道228沿第一方向Z贯穿第一支架22。
在一实施例中，第一通孔43和间隙91连通第一通道228，可使电池包100内形成沿第一方向Z上的散热通道，提高第一电芯组件20、第二电芯组 件30和散热件40的散热。
在一实施例中，第一壁11设有第二通孔111，第二通孔111贯穿第一壁11，第二壁12设有第三通孔121，第三通孔121贯穿第二壁12，第一通道228连通第二通孔111和第三通孔121，第一通道228、第二通孔111和第三通孔121形成供冷却物通过的散热通道，电池包100外的冷却物通过第一通道228、第二通孔111和第三通孔121，将电池包100内的部分热量带走，提高电池包100的散热。在一实施例中，第一通道228、间隙91、第一通孔43、第二通孔111和第三通孔121相互连通。
在一实施例中，冷却物包括但不限于冷空气、冷却液和冷却剂中的任一种。
请结合参阅图1、图2、图12和图13，在一实施例中，第二支架32包覆第二连接区域314的部分形成第二通道328，第二通道328贯穿第二支架32。第二通道328可形成供冷却物流通的散热通道，提高第二连接区域314的散热，提高第二电芯组件30的散热。可选的，第二通道328沿第一方向Z贯穿第二支架32。
在一实施例中，第一通孔43和间隙91连通第二通道328，可使电池包100内形成沿第一方向Z上的散热通道，提高第一电芯组件20、第二电芯组件30和散热件40的散热。
在一实施例中，第一通道228和第二通道328相互连通，有利于提高第一电芯组件20、第二电芯组件30和散热件40的散热。在一实施例中，沿第一方向Z，第一通道228的投影和第二通道328的投影有重叠，有利于进一步提高第一电芯组件20、第二电芯组件30和散热件40的散热。
在一实施例中，第二通道328连通第二通孔111和第三通孔121，第一通道228、第二通道328、第二通孔111和第三通孔121形成供冷却物通过的散热通道，电池包100外的冷却物通过第一通道228、第二通道328、第二通孔111和第三通孔121，将电池包100内的部分热量带走，提高电池包100的散热。
请结合参阅图8、图16和图18，在一实施例中，沿第二方向X，相邻的两个第一电芯组件20上的第一支架22相互连接，有利于提高相邻的第一电芯组件20连接的稳定性，减少相邻的第一电芯组件20之间的支撑物数量，降低电池包100的成本。
在一实施例中，第一支架22包括第一止挡部226和第二止挡部227，第一止挡部226和第二止挡部227分别位于第一支架22沿第二方向X上的两侧，并且，第一止挡部226和第二止挡部227分别沿第二方向X相互背离的向外延伸设置。在一实施例中，沿第二方向X，相邻的两个第一电芯组件20的第一支架22通过第一止挡部226和/或第二止挡部227形成抵接，有利于提高相邻两个第一电芯组件20之间相互连接的稳定性，进一步提高抗震性能。
在一实施例中，第一止挡部226沿第二方向X上的长度和第二止挡部227 沿第二方向X上的长度相等，沿第二方向X，相邻的两个第一电芯组件20中，其中一个第一电芯组件20的第一止挡部226抵接于另一个第一电芯组件20的第一支架22，其中一个第一电芯组件20的第二止挡部227抵接于另一个第一电芯组件20的第一支架22。
如图19所示，在一实施例中，第一止挡部226沿第二方向X上的长度和第二止挡部227沿第二方向X上的长度不等。在一实施例中，第一止挡部226沿第二方向X上的长度大于第二止挡部227沿第二方向X上的长度，沿第二方向X相邻的两个第一电芯组件20中，其中一个第一电芯组件20的第一止挡部226抵接于另一个第一电芯组件20的第一支架22。
如图20所示，在一实施例中，第一止挡部226沿第二方向X上的长度小于第二止挡部227沿第二方向X上的长度，沿第二方向X相邻的两个第一电芯组件20中，其中一个第一电芯组件20的第二止挡部227抵接于另一个第一电芯组件20的第一支架22。
如图21所示，在一实施例中，沿第二方向X相邻的两个第一电芯组件20中，其中一个第一电芯组件20的第一止挡部226抵接于另一个第一电芯组件20的第二止挡部227。
作为示例性的，下面以一个第一电芯组件20的第一止挡部226抵接于另一个第一电芯组件20的第二止挡部227(如图21所示)为例作进一步的说明。
在一实施例中，第一止挡部226设有第一开口2261，沿第三方向Y，第一开口2261的投影与第二止挡部227的投影至少部分相离。在一实施例中，沿第三方向Y观察，第一开口2261的至少部分显露于第二止挡部227。第一开口2261形成供冷却物通过的散热通道，有利于冷却物将第一支架22上的至少部分热量带走，提高第一支架22的散热，提高第一电芯组件20的散热。
在一实施例中，第一开口2261的数量为多个，多个第一开口2261沿第一方向Z排列设置，有利于进一步提高第一支架22的散热。
在一实施例中，第一开口2261设于第一止挡部226沿第二方向X上的端部，为具有开口的凹槽结构。在一实施例中，第一开口2261为通孔。
在一实施例中，第二止挡部227设有第二开口2271，沿第三方向Y，第二开口2271的投影与第一止挡部226的投影至少部分相离。在一实施例中，沿第三方向Y观察，第二开口2271的至少部分显露于第一止挡部226。第二开口2271形成供冷却物通过的散热通道，有利于冷却物将第一支架22上的至少部分热量带走，提高第一支架22的散热，提高第一电芯组件20的散热。
在一实施例中，第二开口2271的数量为多个，多个第二开口2271沿第一方向Z排列设置，有利于进一步提高第一支架22的散热。
在一实施例中，第二开口2271设于第二止挡部227沿第二方向X上的端部，为具有开口的凹槽结构。在一实施例中，第二开口2271为通孔。
在一实施例中，第一开口2261与第二开口2271相分离。在一实施例中， 第一开口2261与第二开口2271相互连通。
请继续参阅图18，作为示例性的，下面以第一止挡部226沿第二方向X上的长度和第二止挡部227沿第二方向X上的长度相等为例作进一步的说明。
在一实施例中，第一止挡部226和第二止挡部227沿第三方向Y相互连接，有利于使得沿第二方向X相邻的两个第一电芯组件20沿第三方向Y上相互限位，进一步减少支撑物或填充物的数量，减少电池包100的成本。
在一实施例中，第一止挡部226的数量为两个，两个第一止挡部226沿第三方向Y间隔设置，第二止挡部227的数量为两个，两个第二止挡部227沿第三方向Y间隔设置。在一实施例中，两个第一止挡部226内侧之间的距离与两个第二止挡部227外侧之间的距离对应，当不同的第一支架22上的第一止挡部226和第二止挡部227抵接时，沿第三方向Y上，两个第二止挡部227的外侧分别抵接于两个第一止挡部226的内侧，使两个第一电芯组件20沿第三方向Y上相互限位，可减少支撑物的数量。
在一实施例中，沿第二方向X相邻的两个第一电芯组件20中，沿第三方向Y观察，两个第一电芯组件20的第一支架22之间具有间隙，两个第一电芯组件20的第一壳体211之间具有间隙，可形成供气体流通的散热通道，提高第一支架22和第一电芯21的散热。
请结合参阅图13、图16和图22，在一实施例中，沿第二方向X，相邻的两个第二电芯组件30上的第二支架32相互抵接，有利于提高相邻的第二电芯组件30连接的稳定性，减少相邻的第二电芯组件30之间的支撑物数量，降低电池包100的成本。
在一实施例中，第二支架32包括第三止挡部326和第四止挡部327，第三止挡部326和第四止挡部327分别位于第二支架32沿第二方向X上的两侧，并且，第三止挡部326和第四止挡部327分别沿第二方向X相互背离的向外延伸设置。在一实施例中，沿第二方向X，相邻的两个第二电芯组件30的第二支架32通过第三止挡部326和/或第四止挡部327形成抵接，有利于提高相邻两个第二电芯组件30之间相互连接的稳定性，进一步提高抗震性能。
在一实施例中，第三止挡部326沿第二方向X上的长度和第四止挡部327沿第二方向X上的长度相等，沿第二方向X，相邻的两个第二电芯组件30中，其中一个第二电芯组件30的第三止挡部326抵接于另一个第二电芯组件30的第二支架32，其中一个第二电芯组件30的第四止挡部327抵接于另一个第二电芯组件30的第二支架32。
如图23所示，在一实施例中，第三止挡部326沿第二方向X上的长度和第四止挡部327沿第二方向X上的长度不等。在一实施例中，第三止挡部326沿第二方向X上的长度大于第四止挡部327沿第二方向X上的长度，沿第二方向X相邻的两个第二电芯组件30中，其中一个第二电芯组件30的第三止挡部326抵接于另一个第二电芯组件30的第一支架22。
如图24所示，在一实施例中，第三止挡部326沿第二方向X上的长度小 于第四止挡部327沿第二方向X上的长度，沿第二方向X相邻的两个第二电芯组件30中，其中一个第二电芯组件30的第四止挡部327抵接于另一个第二电芯组件30的第一支架22。
如图25所示，在一实施例中，沿第二方向X相邻的两个第二电芯组件30中，其中一个第二电芯组件30的第三止挡部326抵接于另一个第二电芯组件30的第四止挡部327。
作为示例性的，下面以一个第二电芯组件30的第三止挡部326抵接于另一个第二电芯组件30的第四止挡部327(如图25所示)为例作进一步的说明。
在一实施例中，第三止挡部326设有第三开口3261，沿第三方向Y，第三开口3261的投影与第四止挡部327的投影至少部分相离。在一实施例中，沿第三方向Y观察，第三开口3261的至少部分显露于第四止挡部327。第三开口3261形成供冷却物通过的散热通道，有利于冷却物将第二支架32上的至少部分热量带走，提高第二支架32的散热，提高第二电芯组件30的散热。
在一实施例中，第三开口3261的数量为多个，多个第三开口3261沿第一方向Z排列设置，有利于进一步提高第二支架32的散热。
在一实施例中，第三开口3261设于第三止挡部326沿第二方向X上的端部，为具有开口的凹槽结构。在一实施例中，第三开口3261为通孔。
在一实施例中，第四止挡部327设有第四开口3271，沿第三方向Y，第四开口3271的投影与第三止挡部326的投影至少部分相离。在一实施例中，沿第三方向Y观察，第四开口3271的至少部分显露于第三止挡部326。第四开口3271形成供冷却物通过的散热通道，有利于冷却物将第二支架32上的至少部分热量带走，提高第二支架32的散热，提高第二电芯组件30的散热。
在一实施例中，第四开口3271的数量为多个，多个第四开口3271沿第一方向Z排列设置，有利于进一步提高第二支架32的散热。
在一实施例中，第四开口3271设于第四止挡部327沿第二方向X上的端部，为具有开口的凹槽结构。在一实施例中，第四开口3271为通孔。
在一实施例中，第三开口3261与第四开口3271相分离。在一实施例中，第三开口3261与第四开口3271相互连通。
请参阅图22，作为示例性的，下面以第三止挡部326沿第二方向X上的长度和第四止挡部327沿第二方向X上的长度相等为例作进一步的说明。
在一实施例中，第三止挡部326和第四止挡部327沿第三方向Y相互抵接，有利于使得沿第二方向X相邻的两个第二电芯组件30沿第三方向Y上相互连接以限位，进一步减少支撑物或填充物的数量，减少电池包100的成本。在一实施例中，第三止挡部326的数量为两个，两个第三止挡部326沿第三方向Y间隔设置，第四止挡部327的数量为两个，两个第四止挡部327沿第三方向Y间隔设置。在一实施例中，两个第三止挡部326内侧之间的距离与两个第四止挡部327外侧之间的距离对应，当不同的第二支架32上的第三止 挡部326和第四止挡部327抵接时，沿第三方向Y上，两个第四止挡部327的外侧分别抵接于两个第三止挡部326的内侧，使两个第二电芯组件30沿第三方向Y上相互限位，可减少支撑物的数量。
在一实施例中，沿第二方向X相邻的两个第二电芯组件30中，沿第三方向Y观察，两个第二电芯组件30的第二支架32之间具有间隙，两个第二电芯组件30的第二壳体311之间具有间隙，可形成供气体流通的散热通道，提高第二支架32和第二电芯31的散热。
如图2和图3所示，在一实施例中，电池包100还包括连接组件70，连接组件70设于多个第一电芯组件20、多个第二电芯组件30和散热件40沿第三方向Y上的一侧，连接组件70连接多个第一电芯组件20和多个第二电芯组件30，使多个第一电芯组件20和多个第二电芯组件30连接。可选的，多个第一电芯组件20和多个第二电芯组件30串联的连接。
在一实施例中，多个第一电芯组件20和多个第二电芯组件30连接后形成总正端子和总负端子(图未示)，总正端子和总负端子连接于电路板。
在一实施例中，电池包100还包括第一连接端子81和第二连接端子82，第一连接端子81连接总正端子和电路板，第二连接端子82连接总负端子和电路板。
综上所述，本申请的电池包100，通过第一支架22和第二支架32连接，第一电芯组件20和第二电芯组件30之间形成间隙91，散热件40设于间隙91，有利于降低散热件40因受到电芯组件的挤压而受损的风险。
如图26所示，本申请的实施例还提供一种用电设备200，包括上述任一实施例所述的电池包100，电池包100可为用电设备200提供电能。
在一实施例中，用电设备200包括但不限于无人机、电动两轮车和电动工具中的任一种。
本申请的用电设备200中，有利于减少第一电芯组件20和第二电芯组件30之间的散热件40因挤压受到的损伤，提高了电池包100的使用寿命，减少电池包100使用寿命对用电设备200的影响。
另外，本领域技术人员还可在本申请精神内做其它变化，当然，这些依据本申请精神所做的变化，都应包含在本申请所公开的范围。

Claims (15)

  1. 一种电池包，其特征在于，包括：
    外壳；
    第一电芯组件，设于所述外壳内，所述第一电芯组件包括第一电芯和第一支架，所述第一支架粘接于所述第一电芯表面；
    第二电芯组件，设于所述外壳内，所述第二电芯组件包括第二电芯和第二支架，所述第二支架粘接于所述第二电芯表面，所述第一电芯组件和所述第二电芯组件沿第一方向堆叠设置；
    所述第一支架与所述第二支架连接，所述第一电芯组件和所述第二电芯组件形成间隙；
    散热件，设于所述间隙。
  2. 如权利要求1所述的电池包，其特征在于，所述第一支架和所述第二支架通过抵接相连。
  3. 如权利要求1所述的电池包，其特征在于，所述第一支架和所述第二支架中的其中一个设有凸部，另一个设有凹部，所述凸部设于所述凹部；所述散热件设有第一通孔，所述凸部的至少部分和/或所述凹部的至少部分容置于所述第一通孔。
  4. 如权利要求3所述的电池包，其特征在于，
    所述凸部的至少部分设于所述凹部，以在所述第一电芯组件与所述第二电芯组件之间形成所述间隙；
    沿所述第一方向，所述散热件的长度小于或等于所述间隙的长度。
  5. 如权利要求1所述的电池包，其特征在于，
    所述第一支架包覆所述第一电芯沿所述第一方向的两侧的至少部分；
    所述第二支架包覆所述第二电芯沿所述第一方向的两侧的至少部分。
  6. 如权利要求1所述的电池包，其特征在于，
    所述第一电芯包括第一壳体、第一电极组件和第一电极端子，所述第一电极组件设于所述第一壳体内部，所述第一电极端子连接于所述第一电极组件并伸出于所述第一壳体，所述第一壳体包括第一主体部和第一封边部，所述第一封边部连接于所述第一主体部，所述第一电极组件设于所述第一主体部内部，所述第一电极端子从所述第一封边部伸出，所述第一支架包覆所述第一封边部的至少部分。
  7. 如权利要求6所述的电池包，其特征在于，所述第一支架包覆所述第一主体部的至少部分。
  8. 如权利要求7所述的电池包，其特征在于，所述第一封边部包括相互连接的第一侧封部和第一顶封部，所述第一电极端子从所述第一顶封部伸出，所述第一支架包覆所述第一侧封部的至少部分和所述第一顶封部。
  9. 如权利要求6所述的电池包，其特征在于，
    所述第一支架和所述第二支架中的其中一个设有凸部，另一个设有凹部， 所述凸部设于所述凹部；
    沿所述第一方向，所述凸部的投影与所述第一主体部的投影有重叠。
  10. 如权利要求1所述的电池包，其特征在于，
    所述第一支架还包括第一止挡部和第二止挡部，所述第一止挡部和所述第二止挡部分别位于所述第一支架沿第二方向上的两侧，所述第二方向垂直于所述第一方向，所述第一止挡部和所述第二止挡部分别沿所述第二方向相互背离的向外延伸设置；
    沿所述第二方向，相邻两个所述第一支架通过所述第一止挡部和/或所述第二止挡部形成抵接；
    所述第二支架还包括第三止挡部和第四止挡部，所述第三止挡部和所述第四止挡部分别位于所述第二支架沿所述第二方向上的两侧，所述第三止挡部和所述第四止挡部分别沿所述第二方向相互背离的向外延伸设置；
    沿所述第二方向，相邻两个所述第二支架通过所述第三止挡部和/或所述第四止挡部形成抵接。
  11. 如权利要求10所述的电池包，其特征在于，
    所述第一止挡部设有第一开口，沿垂直于所述第一方向和所述第二方向的第三方向观察，所述第一开口的至少部分显露于所述第二止挡部；
    和/或，
    所述第二止挡部设有第二开口，沿所述第三方向观察，所述第二开口的至少部分显露于所述第一止挡部。
  12. 如权利要求1所述的电池包，其特征在于，
    所述第一电芯包括第一壳体、第一电极端子和第三电极端子，所述第一电极端子和所述第三电极端子分别从所述第一壳体相对的两侧伸出于所述第一壳体；
    所述第一电芯组件包括多个所述第一电芯，多个所述第一电芯沿第三方向排列设置，沿所述第三方向相邻的两个所述第一电芯中，其中一个第一电芯的第一电极端子和另外一个第一电芯的第三电极端子连接并形成第一连接区域，所述第一支架包覆所述第一连接区域的至少部分和该相邻的两个所述第一电芯的所述第一壳体的至少部分，所述第三方向垂直于所述第一方向；
    所述第二电芯包括第二壳体、第二电极端子和第四电极端子，所述第二电极端子和所述第四电极端子分别从所述第二壳体相对的两侧伸出于所述第二壳体；
    所述第二电芯组件包括多个所述第二电芯，多个所述第二电芯沿所述第三方向排列设置，沿所述第三方向相邻的两个所述第二电芯中，其中一个第二电芯的第二电极端子和另外一个第二电芯的第四电极端子连接并形成第二连接区域，所述第二支架包覆所述第二连接区域的至少部分和该相邻的两个所述第二电芯的所述第二壳体的至少部分；
    所述第一支架包覆所述第一连接区域的部分形成沿所述第一方向贯穿的 第一通道，和/或，所述第二支架包覆所述第二连接区域的部分形成沿所述第一方向贯穿的第二通道。
  13. 如权利要求12所述的电池包，其特征在于，
    所述外壳设有第二通孔和第三通孔；
    所述第一通道连通所述第二通孔和所述第三通孔，和/或，所述第二通道连通所述第二通孔和所述第三通孔。
  14. 如权利要求1-13任一项所述的电池包，其特征在于，所述第一支架通过灌注工艺形成于所述第一电芯的至少部分表面，和/或，第二支架通过灌注工艺形成于所述第二电芯的至少部分表面。
  15. 一种用电设备，其特征在于，包括如权利要求1至14任一项所述的电池包。
PCT/CN2023/110472 2022-11-29 2023-08-01 电池包及用电设备 WO2024113930A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211512044.3 2022-11-29
CN202211512044.3A CN115882105A (zh) 2022-11-29 2022-11-29 电池包及用电设备

Publications (1)

Publication Number Publication Date
WO2024113930A1 true WO2024113930A1 (zh) 2024-06-06

Family

ID=85764672

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/110472 WO2024113930A1 (zh) 2022-11-29 2023-08-01 电池包及用电设备

Country Status (2)

Country Link
CN (1) CN115882105A (zh)
WO (1) WO2024113930A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115882105A (zh) * 2022-11-29 2023-03-31 厦门新能达科技有限公司 电池包及用电设备

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140030566A1 (en) * 2012-07-25 2014-01-30 Samsung Sdi Co., Ltd. Battery pack
CN111477932A (zh) * 2020-04-30 2020-07-31 昆山宝创新能源科技有限公司 电池包和车辆
CN111769221A (zh) * 2020-06-02 2020-10-13 北京新能源汽车股份有限公司蓝谷动力***分公司 用于车辆的电池模组和车辆
CN211829072U (zh) * 2020-04-30 2020-10-30 昆山宝创新能源科技有限公司 电池包和车辆
WO2022088392A1 (zh) * 2020-10-26 2022-05-05 湖北亿纬动力有限公司 夹板、电池模组及电池包
CN115275426A (zh) * 2022-08-09 2022-11-01 厦门新能达科技有限公司 电池组及用电设备
CN115882105A (zh) * 2022-11-29 2023-03-31 厦门新能达科技有限公司 电池包及用电设备

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140030566A1 (en) * 2012-07-25 2014-01-30 Samsung Sdi Co., Ltd. Battery pack
CN111477932A (zh) * 2020-04-30 2020-07-31 昆山宝创新能源科技有限公司 电池包和车辆
CN211829072U (zh) * 2020-04-30 2020-10-30 昆山宝创新能源科技有限公司 电池包和车辆
CN111769221A (zh) * 2020-06-02 2020-10-13 北京新能源汽车股份有限公司蓝谷动力***分公司 用于车辆的电池模组和车辆
WO2022088392A1 (zh) * 2020-10-26 2022-05-05 湖北亿纬动力有限公司 夹板、电池模组及电池包
CN115275426A (zh) * 2022-08-09 2022-11-01 厦门新能达科技有限公司 电池组及用电设备
CN115882105A (zh) * 2022-11-29 2023-03-31 厦门新能达科技有限公司 电池包及用电设备

Also Published As

Publication number Publication date
CN115882105A (zh) 2023-03-31

Similar Documents

Publication Publication Date Title
CN106953135B (zh) 电池模块及其制造方法
US5338624A (en) Thermal management of rechargeable batteries
WO2013183945A1 (ko) 안정성이 향상된 구조 및 높은 냉각 효율성을 갖는 전지모듈
WO2023274311A1 (zh) 一种电池包及用电设备
KR101718056B1 (ko) 전지 팩
WO2017104877A1 (ko) 배터리 모듈
KR20170034643A (ko) 배터리 모듈 및 이를 포함하는 배터리 팩
WO2024113930A1 (zh) 电池包及用电设备
US20220344743A1 (en) Battery Pack and Device Including the Same
CN111373597A (zh) 具有改进的冷却结构的电池模块
WO2020022643A1 (ko) 냉각 효율이 향상된 배터리 모듈 및 이를 포함하는 배터리 팩
WO2023093051A1 (zh) 电池的箱体、电池、用电装置
CN110770965B (zh) 具有改进的冷却结构的电池模块
KR101533992B1 (ko) 전지모듈
WO2024093822A1 (zh) 电化学装置、用电设备及电化学装置的制作方法
JP2023537015A (ja) 電池モジュールおよびこれを含む電池パック
WO2024067628A1 (zh) 电池、电池模组和具有其的车辆
WO2024046194A1 (zh) 电池组和用电设备
CN115275426A (zh) 电池组及用电设备
KR20220153354A (ko) 전지 모듈 및 이를 포함하는 전지 팩
CN113097639A (zh) 一种电池包
KR101966183B1 (ko) 방열 카트리지 및 이를 이용한 전기자동차용 전지팩
CN218070027U (zh) 一种电池包及用电设备
CN218769763U (zh) 一种新型散热电池箱
CN218849596U (zh) 电芯组件、电池组及用电设备