WO2023184389A1 - 电池组、电池组的制造方法和用电装置 - Google Patents

电池组、电池组的制造方法和用电装置 Download PDF

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Publication number
WO2023184389A1
WO2023184389A1 PCT/CN2022/084535 CN2022084535W WO2023184389A1 WO 2023184389 A1 WO2023184389 A1 WO 2023184389A1 CN 2022084535 W CN2022084535 W CN 2022084535W WO 2023184389 A1 WO2023184389 A1 WO 2023184389A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery pack
circuit board
insulating member
board assembly
Prior art date
Application number
PCT/CN2022/084535
Other languages
English (en)
French (fr)
Inventor
弓天蒙
周锦兵
Original Assignee
东莞新能安科技有限公司
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 东莞新能安科技有限公司 filed Critical 东莞新能安科技有限公司
Priority to PCT/CN2022/084535 priority Critical patent/WO2023184389A1/zh
Publication of WO2023184389A1 publication Critical patent/WO2023184389A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • 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 batteries, and in particular to a battery pack, a manufacturing method of the battery pack, and an electrical device.
  • Rechargeable batteries refer to batteries that can be recharged to activate the active material and continue to be used after the battery core is discharged. Rechargeable batteries are widely used in electronic devices such as mobile phones, laptops, etc.
  • Battery packs usually include multiple cells to meet the voltage requirements of electronic devices.
  • how to improve the safety of battery packs has always been a research direction in the industry.
  • the present application provides a battery pack, a manufacturing method of the battery pack and an electrical device, which can improve safety.
  • a battery pack including a casing, a circuit board assembly, a cell module and a first insulating member.
  • the circuit board component is arranged in the housing.
  • the battery core module includes multiple battery cells, and each battery core includes a battery core body and tabs.
  • the battery core body and the circuit board assembly are arranged oppositely along the first direction, and the tabs are drawn out from one end of the battery core body facing the circuit board assembly and connected to the circuit board assembly.
  • the circuit board assembly is connected to the cell body of at least part of the cell through the first insulating member.
  • the first insulating member can limit the movement of the battery core body relative to the circuit board assembly, reduce the risk of pressure deformation and damage of the battery core body, and reduce the risk of transmission to the tabs and circuit board assembly.
  • the stress at the connection reduces the possibility of tab deformation and tearing, thereby improving the reliability and safety of the battery pack.
  • the first insulating member is at least partially disposed between the cell body and the circuit board assembly.
  • the housing includes a first side wall, and the circuit board assembly is located between the first side wall and the cell body along the first direction.
  • the first insulating member includes a first part and a second part.
  • the circuit board assembly is connected to the cell body of at least part of the cell through the first part.
  • the second part is disposed between the first side wall and the circuit board assembly.
  • the first part can limit the movement of the battery core body relative to the circuit board assembly when the battery pack is subjected to external impact force
  • the second part can limit the movement of the circuit board assembly relative to the casing when the battery pack is subject to external impact force, which can reduce The stress transmitted to the connection between the tab and the circuit board assembly is small, reducing the possibility of deformation and tearing of the tab, thereby improving the reliability and safety of the battery pack.
  • the circuit board assembly is connected to the first side wall through the second part, which can strengthen the structural strength of the entire battery pack and improve the reliability and safety of the battery pack.
  • the circuit board assembly is provided with through holes.
  • the tab includes a welding portion that passes through the through hole and is connected to a side of the circuit board assembly away from the cell body, and the second portion covers at least part of the welding portion.
  • the second part can cover at least part of the welding part.
  • the first insulating member further includes a third part, at least part of the third part is located in the through hole and connects the first part and the second part, thereby improving the overall strength of the first insulating member and reducing the Risk of separation of components from circuit board components.
  • the battery pack further includes a third insulating member
  • the housing includes a fourth side wall disposed adjacent to the first side wall
  • the third insulating member connects the plurality of cells to the fourth side wall.
  • the third insulating member connects the main body of the battery cell to the fourth side wall to fix the main body of the battery cell and improve the overall structural strength of the battery pack.
  • the third insulating member includes an adhesive.
  • the third insulating member adheres the plurality of cells to the fourth side wall and can reduce the gap between the third insulating member and the fourth side wall to limit the third insulating member.
  • An insulating member enters the gap between the third insulating member and the fourth side wall.
  • the tab includes a first tab provided with a welded portion, and the second portion covers at least a portion of the welded portion of the first tab.
  • the second part covers at least part of the welding part of the first tab. The second part can reduce the stress transmitted to the welding part of the first tab, reduce the risk of tearing of the welding part, and improve the connection between the tab and the circuit board assembly. reliability.
  • the second portion covers all of the welded portion of the first tab.
  • the tab further includes a second tab spaced apart from the first tab along a third direction, the third direction being perpendicular to the first direction.
  • the second tab is provided with a welding portion, and the second portion covers at least part of the welding portion of the second tab.
  • the second portion covers all of the welded portion of the second tab.
  • the second portion extends beyond the welded portion of the second tab.
  • the housing includes a first housing and a second housing, the first housing has an opening at one end along the third direction, the second housing covers the opening, and the third direction is perpendicular to the first direction.
  • the fourth side wall and the opening are arranged oppositely along the third direction. In the third direction, the end of the first insulating piece away from the fourth side wall does not exceed the opening, which can limit the first insulating piece from overflowing to the outside of the first shell and reduce the interference of the first insulating piece with the first shell and the second shell. body assembly risks.
  • multiple battery cores are stacked along the second direction, and the circuit board assembly is connected to the battery core bodies of all the battery cores through the first insulating member, which can improve the overall structural strength of the battery core module.
  • the housing includes a second side wall located on a side of the battery module away from the circuit board assembly, and the first side wall and the second side wall are oppositely arranged along the first direction.
  • the battery pack further includes a second insulating member, and the second side wall is connected to the cell body through at least part of the second insulating member.
  • the second insulating member can be disposed in the gap between the second side wall and the battery cell body to limit the movement of the battery core bodies relative to the second side wall when the battery pack is subjected to external impact force, thereby reducing the weight of the battery cell body.
  • the risk of pressure deformation and breakage reduces the stress transmitted to the connection between the tab and the circuit board assembly, and reduces the possibility of tab deformation and tearing, thus improving the reliability and safety of the battery pack.
  • the second insulating member is connected to the cell body of the plurality of cells.
  • the battery pack further includes a first buffer member, which is disposed between the cell module and the second side wall and connected to the cell body.
  • the second insulating part is connected to the first buffering part.
  • the first buffer member can improve the overall strength of the battery module, and plays a buffering and protective role during the transportation and assembly process of the battery module to reduce the risk of damage to the battery body.
  • the second insulating member is connected to the first buffer member, which can increase the connection strength between the first buffer member and the battery module and reduce the risk of the first buffer member falling off.
  • a portion of the second insulating member is provided between the first buffer member and the second side wall to reduce the shaking amplitude of the battery cell body when the battery pack is subjected to an external impact force.
  • a plurality of first buffer members are provided, a channel is formed between adjacent first buffer members, and at least part of the second insulating member is disposed in the channel.
  • Multiple independent first buffer members can increase the area of the channel to facilitate the injection of colloid.
  • the plurality of cells are arranged along the second direction.
  • the housing includes two third side walls, and the two third side walls are respectively located on both sides of the battery module along the second direction.
  • the battery pack also includes a second buffer member disposed between the third side wall and the battery cell module, and the second buffer member is connected to the battery cell body. The second buffer member can absorb the expansion of the battery core body, reduce the pressure between the battery core bodies, and improve the charging and discharging performance of the battery core body.
  • the battery pack further includes a third buffer member disposed between the cell bodies.
  • the first insulating member is formed by injecting flowing insulating material into the housing and solidifying it.
  • the first insulation member is made of solidified foam glue.
  • Styrofoam can be foamed and placed in the gap between the battery cell body and the circuit board assembly. At the same time, the weight of the styrofoam is small, which can improve the volumetric energy density and weight energy density of the battery pack and reduce the material cost of the product structure. .
  • embodiments of the present application provide a method for manufacturing a battery pack, including: providing a casing; and providing a circuit board assembly and a cell module.
  • the cell module includes a plurality of cells, and each cell includes a cell.
  • the main body and the pole tabs, the battery core body and the circuit board assembly are arranged oppositely along the first direction, and the pole tabs are drawn out from one end of the battery core body facing the circuit board assembly and connected to the circuit board assembly; the circuit board assembly and the battery core module are installed into the housing; a first insulating member is provided in the housing, and the circuit board assembly is connected to the cell body of at least part of the cell through the first insulating member.
  • the first insulating member is formed by injecting flowing insulating material into the housing and solidifying it.
  • the manufacturing method of the battery pack further includes: coating an adhesive in the casing to form a third insulating member. After the battery module is coated with adhesive, it is installed into the housing and bonded to the adhesive. After the adhesive is solidified, the insulating material is injected into the housing to form the first insulating member.
  • embodiments of the present application provide an electric device, which includes an electric main body and a battery pack.
  • the battery pack is connected to the electric main body and is used to provide electric energy to the electric main body.
  • the battery pack of the electrical device may be the battery pack provided in any embodiment of the first aspect, or may be the battery pack obtained by the manufacturing method of any embodiment of the second aspect.
  • Figure 1 is a schematic structural diagram of a battery pack provided by some embodiments of the present application.
  • FIG 2 is an exploded schematic diagram of the battery pack shown in Figure 1, in which the first insulating member and the second insulating member of the battery pack are omitted;
  • Figure 3 is a schematic cross-sectional view of a battery pack provided by some embodiments of the present application.
  • Figure 4 is another schematic cross-sectional view of a battery pack provided by some embodiments of the present application, in which the first insulating member and the second insulating member of the battery pack are omitted;
  • FIG. 5 is an exploded schematic diagram of the battery core shown in Figure 4.
  • FIG. 6 is an enlarged schematic diagram of the battery pack shown in Figure 4 at circular frame A;
  • FIG. 7 is a schematic structural diagram of a battery pack provided by some embodiments of the present application, in which the second part is shown;
  • Figure 8 is a schematic structural diagram of a battery pack provided by other embodiments of the present application, in which the second part is shown;
  • Figure 9 is a schematic structural diagram of a battery pack provided by some embodiments of the present application, in which the second part is shown;
  • FIG 10 is an enlarged schematic diagram of the battery pack shown in Figure 3 at circular frame B;
  • Figure 11 is another schematic cross-sectional view of a battery pack provided by some embodiments of the present application.
  • Figure 12 is a schematic diagram of the battery pack provided by some embodiments of the present application before the foam rubber is expanded;
  • Figure 13 is another schematic cross-sectional view of the battery pack provided by some embodiments of the present application.
  • Figure 14 is an enlarged schematic diagram of the battery pack shown in Figure 13 at circular frame C;
  • Figure 15 is a schematic structural diagram of the first housing and the third insulating member of the battery pack provided by some embodiments of the present application;
  • Figure 16 is a schematic flow chart of a battery pack manufacturing method provided by some embodiments of the present application.
  • Figure 17 is a schematic structural diagram of an electrical device provided by some embodiments of the present application.
  • Circuit board assembly 21. Substrate; 211. Through hole; 22. Bus component;
  • the first insulating piece 41. The first part; 42. The second part; 43. The third part;
  • First buffer member 61. Channel; 62. Foam rubber;
  • X first direction
  • Y second direction
  • Z third direction
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or a detachable connection, or Integrated connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal connection between two components.
  • connection can be a fixed connection or a detachable connection, or Integrated connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal connection between two components.
  • parallel not only includes absolutely parallel situations, but also includes generally parallel situations that are conventionally recognized in engineering; at the same time, “perpendicular” includes not only absolutely vertical situations, but also includes conventional engineering practices.
  • a roughly vertical situation of cognition For example, if the angle between the two directions is 80°-90°, the two directions can be considered to be perpendicular; if the angle between the two directions is 0°-10°, the two directions can be considered to be parallel.
  • the battery pack 1000 includes a case 1 , a circuit board assembly 2 , a battery module 3 and a first insulating member 4 .
  • the circuit board assembly 2 is arranged in the housing 1 .
  • the battery core module 3 includes a plurality of battery cells 31.
  • Each battery core 31 includes a battery core body 311 and a tab 312.
  • the battery core body 311 is opposite to the circuit board assembly 2 along the first direction 311 is drawn out from one end facing the circuit board assembly 2 and connected to the circuit board assembly 2 .
  • the circuit board assembly 2 is connected to at least part of the cell body 311 of the cell 31 through the first insulating member 4 .
  • the portion of the first insulating member 4 disposed between the cell body 311 and the circuit board assembly 2 can limit the relative position of the cell body 311 to the circuit board assembly. 2's movement reduces the risk of pressure deformation and damage of the battery core body 311, reduces the stress transmitted to the connection between the tab 312 and the circuit board assembly 2, reduces the possibility of deformation and tearing of the tab 312, thereby improving the Battery Pack 1000 reliability and safety.
  • the first insulating member 4 connects the cell body 311 and the circuit board assembly 2 to enhance the structural strength of the entire battery pack 1000 .
  • the first insulating member 4 is at least partially disposed between the cell body 311 and the circuit board assembly 2 .
  • the first insulating member 4 is formed by injecting flowing insulating material into the housing 1 and then solidifying it, such as low-pressure injection molding, such as injecting glue.
  • the housing 1 forms an accommodation chamber for accommodating the battery module 3 .
  • the housing 1 can protect the battery module 3 from the outside to limit liquid or other foreign matter from affecting the charging or discharging of the battery module 3 .
  • Multiple battery cells 31 may be connected in series, in parallel, or in mixed connection.
  • Mixed connection means that the multiple battery cells 31 are connected in series and in parallel.
  • the cell body 311 includes a cell case 3111 , an electrode assembly 3112 and an electrolyte.
  • the electrode assembly 3112 and the electrolyte are contained in the cell case 3111 .
  • the electrode assembly 3112 includes a positive electrode piece, a negative electrode piece and an isolation film.
  • the battery core body 311 mainly relies on metal ions to move between the positive electrode piece and the negative electrode piece.
  • One end of the tab 312 extends out of the cell housing 3111 and is used for electrical connection with an external circuit.
  • the other end of the tab 312 extends into the inside of the cell housing 3111 and is used for electrical connection with the electrode assembly 3112.
  • the tabs 312 are used to electrically connect the electrode assembly 3112 with an external circuit to realize charging and discharging of the battery core 31 .
  • the tab 312 includes a first tab 312a and a second tab 312b.
  • One of the first tab 312a and the second tab 312b is used for electrical connection with the positive electrode piece, and the other is used for electrical connection with the positive electrode piece.
  • the negative pole piece is electrically connected.
  • the battery case 3111 is made of aluminum plastic film.
  • the battery core 31 may be a lithium ion battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, a magnesium ion battery cell or other types of battery cells, which are not limited in the embodiments of the present application.
  • the battery core 31 is a soft-packed battery core.
  • the cell housing 3111 includes a first packaging part 3113 and a second packaging part 3114.
  • the first packaging part 3113 is connected to the second packaging part 3114.
  • the first packaging part 3113 and the second packaging part 3114 are connected along the connecting position. It can be folded so that the first packaging part 3113 and the second packaging part 3114 overlap, thereby covering the electrode assembly 3112.
  • the first packaging part 3113 and the second packaging part 3114 may be two separate and independent components.
  • the first packaging part 3113 includes a first region 3113a and a second region 3113b extending outward from the circumferential side of the first region 3113a
  • the second packaging part 3114 includes a third region 3114a and a circumference extending from the third region 3114a. Laterally outwardly extending fourth region 3114b.
  • the first insulation member 4 is connected to the first region 3113a and the third region 3114a.
  • the first insulating member 4 covers the portions of the second region 3113b and the fourth region 3114b that the tab 312 passes through.
  • the circuit board assembly 2 is connected to the tab 312 to control charging and discharging of the battery core 31 .
  • the circuit board assembly 2 includes a base plate 21 and a bus component 22 .
  • the bus component 22 is provided on the base board 21 and connected to the tabs 312 .
  • multiple bus components 22 are provided, and the multiple bus components 22 are used to connect multiple electric cores 31 in series, parallel or mixed connection.
  • bus component 22 is welded to tab 312 .
  • the circuit board assembly 2 includes a battery management system.
  • the substrate 21 includes a printed circuit board.
  • the tabs 312 can be directly welded to the substrate 21 .
  • the first insulating member 4 can be entirely disposed between the battery core body 311 and the circuit board assembly 2 , or can be partially disposed between the battery core body 311 and the circuit board assembly 2 . In the first direction
  • the first insulating member 4 can be connected to the battery core body 311 and the circuit board assembly 2 by bonding or other means.
  • the housing 1 includes a first housing 1a and a second housing 1b.
  • the first housing 1a and the second housing 1b form a receiving chamber, and the battery core module 3 and the circuit board assembly 2 are accommodated. in the containing chamber.
  • the first housing 1 a and the second housing 1 b may be connected as a whole through bonding, fastener connection, or other means to cover each other and jointly define a receiving cavity for receiving the battery core module 3 .
  • the first housing 1a is provided with a plurality of buckles 15, and the buckles 15 are used to cooperate with the second housing 1b to snap the first housing 1a and the second housing 1b together.
  • the first housing 1a and the second housing 1b can also be fixed by structural glue.
  • a plurality of nut posts 16 and a plurality of through holes 17 are respectively provided on the first housing 1a and the second housing 1b.
  • the nut posts 16 and the through holes 17 can be used to connect with other structures of the electrical device. Such as fans, inverters, control boards or other components.
  • the housing 1 includes a first side wall 11 , and along the first direction X, the circuit board assembly 2 is located between the first side wall 11 and the cell body 311 .
  • the first insulating member 4 includes a first part 41 and a second part 42.
  • the circuit board assembly 2 is connected to at least part of the cell body 311 of the cell 31 through the first part 41.
  • the second part 42 is provided between the first side wall 11 and the circuit board. between components 2.
  • the first portion 41 is provided between the battery core body 311 and the circuit board assembly 2 .
  • the first part 41 can limit the movement of the cell body 311 relative to the circuit board assembly 2 when the battery pack 1000 is subjected to an external impact force
  • the second part 42 can limit the movement of the battery pack 1000 when it is subjected to an external impact force.
  • the movement of the circuit board assembly 2 relative to the housing 1 can reduce the stress transmitted to the connection between the tab 312 and the circuit board assembly 2 and reduce the possibility of deformation and tearing of the tab 312, thus improving the performance of the battery pack 1000. Reliability and security.
  • the circuit board assembly 2 is connected to the first side wall 11 through the second part 42 , which can strengthen the structural strength of the entire battery pack 1000 and improve the reliability and safety of the battery pack 1000 .
  • the circuit board assembly 2 is provided with a through hole 211, and the tab 312 includes a welding portion 312c.
  • the welding portion 312c passes through the through hole 211 and is connected to the side of the circuit board assembly 2 away from the cell body 311.
  • the second portion 42 covers at least part of the weld 312c.
  • At least part of the tab 312 is located on the side of the circuit board assembly 2 away from the cell body 311 and is welded to the circuit board assembly 2 to form a welding portion 312c.
  • the circuit board assembly 2 includes a substrate 21 and a bus component 22 .
  • the through hole 211 is provided on the substrate 21 .
  • the bus component 22 is provided on a side of the substrate 21 facing the first side wall 11 .
  • the tabs 312 pass through the through hole 211 .
  • the hole 211 is welded to the bus part 22 to form a welded portion 312c.
  • the second part 42 can cover at least part of the welding part 312c.
  • the second part 42 can reduce the stress transmitted to the welding part 312c and reduce the tearing of the welding part 312c. The risk of cracking is eliminated, and the reliability of the connection between the tab 312 and the circuit board assembly 2 is improved.
  • the first insulating member 4 further includes a third part 43 , at least part of the third part 43 is located in the through hole 211 and connects the first part 41 and the second part 42 .
  • the third part 43 can connect the first part 41 and the second part 42 , thereby improving the overall strength of the first insulating part 4 and reducing the risk of separation of the first insulating part 4 from the circuit board assembly 2 .
  • the third part 43 reduces the movement of the tab 312 within the through hole 211 and reduces the risk of the tab 312 tearing.
  • the first insulating member 4 is connected to the cell bodies 311 of the plurality of cells 31 .
  • the first insulating member 4 can connect the cell bodies 311 of the plurality of cells 31 into one body, which can improve the overall structural strength of the cell module 3 .
  • multiple battery cores 31 are stacked along the second direction Y, and the circuit board assembly 2 is connected to the battery core bodies 311 of all the battery cores 31 through the first insulating member 4 , which can improve the overall stability of the battery core module 3 . Structural strength.
  • the first insulating member 4 is solidified by colloid.
  • the colloid has fluidity and can be effectively disposed in the gap between the battery core body 311 and the circuit board assembly 2 and directly bonded to the battery core body 311 and the circuit board assembly 2 .
  • the first insulating member 4 is made of solidified foam glue.
  • Foam glue is a kind of glue with foaming properties and adhesive properties. It can quickly expand, solidify and form foam after contact with air or moisture.
  • the cured styrofoam foam has various effects such as caulking, bonding, sealing, and heat insulation.
  • the foam rubber can be foamed and disposed in the gap between the cell body 311 and the circuit board assembly 2.
  • the foam rubber has a small weight, which can increase the volumetric energy density and weight of the battery pack 1000. energy density and reduce product structure material costs.
  • this application uses foam rubber with an expansion ratio of 2-20 times.
  • the housing 1 includes a first housing 1a and a second housing 1b.
  • the first housing 1a has an opening 1c at one end along the third direction Z, the second housing 1b covers the opening 1c, and the second housing 1b covers the opening 1c.
  • the three directions Z are perpendicular to the first direction X.
  • the first housing 1a includes a fourth side wall 14 adjacent to the first side wall 11. Along the third direction Z, the fourth side wall 14 is located on the side of the battery module 3 away from the second housing 1b. .
  • the fourth side wall 14 and the opening 1c are oppositely arranged along the third direction Z.
  • the first insulating member 4 is connected to the fourth side wall 14; in the third direction Z, the end of the first insulating member 4 away from the fourth side wall 14 does not exceed the opening 1c, which can limit the first insulating member 4 from overflowing into the first
  • the outside of the housing 1a reduces the risk of the first insulating member 4 interfering with the assembly of the first housing 1a and the second housing 1b.
  • the gap between the cell body 311 and the circuit board assembly 2 is used as a flow channel for glue filling, and the foam glue flows to the fourth side wall 14 and generally along the For foaming in the third direction Z, the foam glue can be provided in the gap between the battery core body 311 and the circuit board assembly 2, the gap between the circuit board assembly 2 and the first side wall 11, and the through hole 211.
  • the foaming height of the foam glue is controlled, thereby reducing the risk of the foam glue overflowing to the outside of the first housing 1a.
  • the tab 312 includes a first tab 312a having a welded portion 312c, and a second portion 42 covering at least a portion of the welded portion 312c of the first tab 312a.
  • the second portion 42 may The stress transmitted to the welding portion 312c of the first tab 312a is reduced, the risk of tearing of the welding portion 312c is reduced, and the reliability of the connection between the tab 312 and the circuit board assembly 2 is improved.
  • the second portion 42 covers all of the welded portion 312c of the first tab 312a.
  • the first tab 312a and the second tab 312b are provided at opposite ends of the battery case 3111, and the first tab 312a is provided with a welding portion 312c.
  • the second portion 42 covers the welded portion 312c of the first tab 312a.
  • the second part 42 can reduce the stress transmitted to the welding portion 312c of the first tab 312a, reduce the risk of tearing of the welding portion 312c, and improve the connection between the first tab 312a and the circuit board. Reliability of component 2 connections.
  • the tabs 312 include first tabs 312 a and second tabs 312 b spaced apart along the third direction Z.
  • first tab 312a when viewed along the first direction X, in the third direction Z, the first tab 312a is located between the second tab 312b and the fourth side wall 14 .
  • the first tab 312a and the second tab 312b are each provided with a welding portion 312c.
  • the second portion 42 covers the welded portion 312c of the first tab 312a.
  • the second portion 42 can cover the welding portion 312c of the first tab 312a.
  • the second portion 42 can reduce the stress transmitted to the welding portion 312c of the first tab 312a, thereby reducing the welding stress.
  • the risk of tearing of the portion 312c is eliminated, and the reliability of the connection between the tab 312 and the circuit board assembly 2 is improved.
  • the end of the second portion 42 away from the fourth side wall 14 extends beyond the first tab 312a to cover the welding portion 312c of the first tab 312a.
  • the second portion 42 covers the welded portions 312c of the plurality of first tabs 312a.
  • the second portion 42 covers all of the welded portion 312c of the first tab 312a.
  • the second portion 42 also covers at least a portion of the welded portion 312c of the second tab 312b.
  • the second portion 42 can reduce the stress transmitted to the welding portion 312c of the second tab 312b, reduce the risk of tearing of the welding portion 312c, and further improve the connection between the tab 312 and the circuit board assembly. 2. Connection reliability.
  • the end of the second portion 42 away from the fourth side wall 14 exceeds the midpoint of the second tab 312b along the third direction Z.
  • the second portion 42 covers all of the welded portion 312c of the second tab 312b.
  • the second portion 42 extends beyond the welded portion 312c of the second tab 312b.
  • the second portion 42 extends beyond the second tab 312b in the third direction Z and covers the welded portion 312c of the second tab 312b.
  • the second portion 42 covers all of the welding portions 312c of the second tab 312 .
  • each battery core module 3 is connected to a corresponding circuit board component 2 .
  • This embodiment can increase the capacity of the battery pack 1000.
  • the fourth side wall 14 is provided with a first recess 141 and a second recess 142, and one end of the circuit board assembly 2 can be inserted into the first recess 141 and fixed to the fourth side wall 14;
  • the second recess 142 may be used to receive one end of the battery core body 311 along the third direction Z; the second recess 142 may be a contoured groove corresponding to the end shape of the battery core body 311 .
  • the housing 1 includes a second side wall 12 , and the second side wall 12 is located on the side of the battery module 3 away from the circuit board assembly 2 .
  • the first side wall 11 and the second side wall 12 are arranged oppositely along the first direction X.
  • the battery pack 1000 further includes a second insulating member 5 , and the second side wall 12 is connected to the cell body 311 through at least part of the second insulating member 5 .
  • At least part of the second insulating member 5 is located between the second side wall 12 and the cell body 311 .
  • the second insulating member 5 can be disposed in the gap between the second side wall 12 and the cell body 311 to limit the relative space between the cell body 311 and the battery pack 1000 when the battery pack 1000 is subjected to an external impact force.
  • the movement of the two side walls 12 thereby reduces the risk of pressure deformation and damage of the cell body 311, reduces the stress transmitted to the connection between the tab 312 and the circuit board assembly 2, and reduces the possibility of deformation and tearing of the tab 312. , thereby improving the reliability and safety of the battery pack 1000.
  • the second insulating member 5 is connected to the cell bodies 311 of the plurality of cells 31 .
  • the second insulating member 5 can connect the cell bodies 311 of the plurality of cells 31 into one body, which can improve the overall structural strength of the cell module 3 .
  • the second insulating member 5 is solidified by colloid.
  • the second insulation member 5 is made of solidified foam glue.
  • the battery pack 1000 further includes a first buffer member 6 , which is disposed between the cell module 3 and the second side wall 12 and connected to the cell body 311 .
  • the second insulating member 5 is connected to the first buffer member 6 .
  • the first buffer member 6 can improve the overall strength of the battery module 3 and play a buffering and protective role during the transportation and assembly of the battery module 3 to reduce the risk of damage to the battery body 311. risk.
  • the second insulating member 5 is connected to the first buffer member 6 , which can increase the connection strength between the first buffer member 6 and the battery module 3 and reduce the risk of the first buffer member 6 falling off.
  • the first buffer member 6 is made of foam and adhered to the battery module 3 .
  • a portion of the second insulating member 5 is disposed between the first buffer member 6 and the second side wall 12 .
  • the second insulating member 5 can be disposed in the gap between the first buffer member 6 and the second side wall 12 to reduce the shaking amplitude of the cell body 311 when the battery pack is subjected to external impact force.
  • first buffer members 6 there are multiple first buffer members 6 , channels 61 are formed between adjacent first buffer members 6 , and at least part of the second insulating member 5 is disposed in the channel 61 .
  • multiple independent first buffer members 6 can increase the area of the channel 61 to facilitate the injection of colloid.
  • the plurality of battery cells 31 are arranged along the second direction Y.
  • the plurality of first buffer members 6 are arranged at intervals along the second direction Y and the third direction Z, and the third direction Z is perpendicular to the second direction Y and the first direction X.
  • one end of the second insulating member 5 along the third direction Z is connected to the fourth side wall 14, and the other end does not exceed the opening 1c, which can limit the second insulating member 5 from overflowing to the outside of the first housing 1a. The risk of the second insulating member 5 interfering with the assembly of the first housing 1a and the second housing 1b is reduced.
  • the foam glue 62 flows to the fourth side wall 14 and foams generally along the third direction Z.
  • the foam glue can be disposed on The gap between the cell body 311 and the second side wall 12 .
  • the foam rubber 62 may expand along the path pointed by the arrow.
  • the end of the second insulating member 5 away from the fourth side wall 14 exceeds the midpoint of the cell body 311 along the third direction Z.
  • a plurality of battery cores 31 are arranged along the second direction Y.
  • the housing 1 includes two third side walls 13 .
  • the two third side walls 13 are respectively located on both sides of the battery module 3 along the second direction Y.
  • the battery pack 1000 further includes a second buffer member 7 disposed between the third side wall 13 and the battery cell module 3 .
  • the second buffer member 7 is connected to the battery cell body 311 .
  • the second buffer member 7 can absorb the expansion of the battery core bodies 311, reduce the pressure between the battery core bodies 311, and improve the charging and discharging performance of the battery core bodies 311.
  • the second buffer member 7 is made of foam, and the second buffer member 7 can be bonded to the battery core body 311 .
  • the housing 1 further includes a fourth side wall 14 disposed adjacent to the first side wall 11 .
  • the battery pack 1000 further includes a third insulating member 8 , which connects the plurality of battery cells 31 to the fourth side wall 14 .
  • the fourth side wall 14 and the opening 1c are arranged oppositely along the third direction Z. At least part of the third insulating member 8 is disposed between the battery module 3 and the fourth side wall 14. The third insulating member 8 is continuously arranged along the second direction Y and connected to the battery core body 311 and the fourth side wall 14 of the plurality of battery cores 31 . Optionally, the third insulating member 8 is connected to the second buffer member 7 .
  • the third insulating member 8 connects the cell body 311 to the fourth side wall 14 to fix the cell body 311 and improve the overall structural strength of the battery pack 1000 .
  • the third insulating member 8 and the second buffering member 7 can also limit the position of the first insulating member 4, reducing the portion of the first insulating member 4 that enters between the cell body 311 and the fourth side wall 14 and the first insulating member. 4 enters the part between the cell body 311 and the third side wall 13 to save materials and improve the energy density of the battery pack 1000.
  • the third insulating member 8 may restrict the first insulating member 4 from entering the gap between the third insulating member 8 and the fourth side wall 14 .
  • the third insulating member 8 includes an adhesive.
  • the third insulating member 8 bonds the plurality of electric cores 31 to the fourth side wall 14 to reduce the friction between the third insulating member 8 and the fourth side wall 14 . gap to restrict the first insulating member 4 from entering the gap between the third insulating member 8 and the fourth side wall 14 .
  • the third insulating member 8 includes at least one of glue, double-sided glue, foam glue, and the like.
  • the insulating material used to solidify and form the first insulating component 4 is injected into the first housing 1 a.
  • the third insulating member 8 includes two or more components, such as foam that can restrict the passage of glue and double-sided tape disposed on the outer surface of the foam.
  • At least part of the third insulating member 8 is disposed in the second recess 142 .
  • the third insulating member 8 is connected to an end of the second buffer member 7 close to the fourth side wall 14 .
  • the third insulating member 8 and the second buffering member 7 can also limit the position of the second insulating member 5 , reducing the portion of the second insulating member 5 that enters between the cell body 311 and the fourth side wall 14 and the second insulating member. 5 enters the part between the cell body 311 and the third side wall 13 to save materials.
  • a plurality of third insulating members 8 are provided, and the plurality of third insulating members 8 are spaced apart along the first direction X. This embodiment can save the amount of structural glue and improve the energy density of the battery pack 1000 .
  • the third insulating member 8 is in two parts; one part of the third insulating member 8 is disposed close to the first side wall 11 to limit the first insulating member 4 , and the other part of the third insulating member 8 is disposed close to the first side wall 11 .
  • Two side walls 12 are provided to limit the position of the second insulating member 5 .
  • the battery pack 1000 further includes a third buffer member 9 disposed between the cell bodies 311 .
  • the third buffer member 9 can be used to absorb the expansion of the battery core body 311 during charging and discharging.
  • the third buffer member 9 is made of foam.
  • the third insulating member 8 is connected to an end of the third buffer member 9 close to the fourth side wall 14 .
  • the third insulating member 8 and the third buffering member 9 can also limit the position of the first insulating member 4, reducing the entry of the first insulating member 5 between the cell body 311 and the fourth side wall 14, thus saving materials.
  • some embodiments of the present application also provide a method for manufacturing a battery pack, which includes:
  • the battery core module 3 includes a plurality of battery cells 31.
  • Each battery core 31 includes a battery core body 311 and tabs 312.
  • the battery core body 311 is connected to the circuit board assembly 2. The first direction
  • a first insulating member 4 is provided in the housing 1, and the circuit board assembly 2 is connected to at least part of the cell body 311 of the cell 31 through the first insulating member 4.
  • the first insulating member 4 is formed by injecting the flowing insulating material into the housing 1 and solidifying it.
  • the insulating material is foam rubber.
  • the battery pack manufacturing method further includes step S500: coating adhesive in the case 1 to form the third insulating member 8 . After the battery module 3 is coated with adhesive, it is installed in the housing 1 and bonded to the adhesive. The insulating material is injected into the housing 1 to form the first insulating member 4 after the adhesive is solidified. Step S500 is executed after step S100 and before step S200.
  • the insulating material can be restricted from passing through the gap between the cell body 311 and the fourth side wall 14 , thereby saving materials and improving the energy density of the battery pack 1000 .
  • some embodiments of the present application provide an electrical device, which includes an electrical main body 2000 and a battery pack 1000.
  • the battery pack 1000 is connected to the power consumption body 2000 and is used to provide electric energy to the power consumption body 2000 .
  • the battery pack 1000 may be the battery pack 1000 provided in any of the above embodiments.
  • the battery pack 1000 may be the battery pack 1000 obtained by the manufacturing method of any of the above embodiments.
  • the electric main body 2000 can realize the set functions driven by electric energy.
  • Electrical devices can be portable devices, laptops, electric toys and tools, energy storage systems, and more.
  • Power tools include metal cutting power tools, cleaning tools, etc., such as electric drills, electric wrenches, vacuum cleaners, sweeping robots, etc.
  • the embodiments of this application impose no special restrictions on the above-mentioned electrical devices.

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Abstract

本申请实施例提供一种电池组、电池组的制造方法和用电装置。电池组包括壳体、电路板组件、电芯模组和第一绝缘件。电路板组件设置于壳体内。电芯模组包括多个电芯，各电芯包括电芯主体和极耳。电芯主体与电路板组件沿第一方向相对设置，极耳从电芯主体面向电路板组件的一端引出，并连接于电路板组件。电路板组件通过第一绝缘件与至少部分电芯的电芯主体连接。在电池组受到外部的冲击力时，第一绝缘件能够限制电芯主体相对于电路板组件的运动，降低电芯主体受压变形、破损的风险，减小传递到极耳与电路板组件的连接处的应力，降低极耳变形、撕裂的可能性，从而提高了电池组的可靠性和安全性。

Description

电池组、电池组的制造方法和用电装置 技术领域
本申请涉及电池领域，特别是涉及一种电池组、电池组的制造方法和用电装置。
背景技术
可再充电电芯，是指在电芯放电后可通过充电的方式使活性物质激活而继续使用的电池。可再充电电芯广泛用于电子设备，例如手机、笔记本电脑等等。
电池组通常包括多个电芯，以满足电子设备对电压的要求。在电池技术的发展中，如何改进电池组的安全性，一直是业内的研究方向。
发明内容
本申请提供了一种电池组、电池组的制造方法和用电装置，其能提高安全性。
第一方面，本申请实施例提供了一种电池组，包括壳体、电路板组件、电芯模组和第一绝缘件。电路板组件设置于壳体内。电芯模组包括多个电芯，各电芯包括电芯主体和极耳。电芯主体与电路板组件沿第一方向相对设置，极耳从电芯主体面向电路板组件的一端引出，并连接于电路板组件。电路板组件通过第一绝缘件与至少部分电芯的电芯主体连接。
在电池组受到外部的冲击力时，第一绝缘件能够限制电芯主体相对于电路板组件的运动，降低电芯主体受压变形、破损的风险，减小传递到极耳与电路板组件的连接处的应力，降低极耳变形、撕裂的可能性，从而提高了电池组的可靠性和安全性。
在一些实施例中，第一绝缘件至少部分设于电芯主体和电路板组件之间。
在一些实施方式中，壳体包括第一侧壁，沿第一方向，电路板组件位于第一侧壁和电芯主体之间。第一绝缘件包括第一部分和第二部分，电路板组件通过第一部分与至少部分电芯的电芯主体连接，第二部分设于第一侧壁和电路板组件之间。第一部分可在电池组受到外部的冲击力时限制电芯主体相对于电路板组件的运动，第二部分能够在电池组受到外部的冲击力时限制电路板组件相对于壳体的运动，可减小传递到极耳与电路板组件的连接处的应力，降低极耳变形、撕裂的可能性，从而提高了电池组的可靠性和安全性。
在一些实施方式中，电路板组件通过第二部分与第一侧壁连接，可加强整个电池组的结构强度，提高电池组的可靠性和安全性。
在一些实施方式中，电路板组件设有通孔。极耳包括焊接部，焊接部穿过通孔，并连接于电路板组件远离电芯主体的一侧，第二部分覆盖焊接部的至少部分。第二部 分可覆盖焊接部的至少部分，在电池组受到外部的冲击力时，第二部分可以减小传递到焊接部的应力，降低焊接部撕裂的风险，提高极耳与电路板组件连接的可靠性。
在一些实施方式中，第一绝缘件还包括第三部分，第三部分的至少部分位于通孔内，并连接第一部分和第二部分，从而提高第一绝缘件的整体强度，降低第一绝缘件与电路板组件分离的风险。
在一些实施方式中，电池组还包括第三绝缘件，壳体包括与第一侧壁相邻设置的第四侧壁，第三绝缘件将多个电芯连接于第四侧壁。第三绝缘件将电芯主体连接到第四侧壁，以实现电芯主体的固定，提高电池组整体的结构强度。
在一些实施方式中，第三绝缘件包括粘接物，第三绝缘件将多个电芯粘接于第四侧壁，可减小第三绝缘件和第四侧壁的间隙，以限制第一绝缘件进入第三绝缘件和第四侧壁之间的间隙。
在一些实施方式中，极耳包括第一极耳，第一极耳设有焊接部，第二部分覆盖第一极耳的焊接部的至少部分。第二部分覆盖第一极耳的焊接部的至少部分，第二部分可以减小传递到第一极耳的焊接部的应力，降低焊接部撕裂的风险，提高极耳与电路板组件连接的可靠性。
在一些实施方式中，第二部分覆盖第一极耳的焊接部的全部。
在一些实施方式中，极耳还包括沿第三方向与第一极耳间隔设置的第二极耳，第三方向垂直于第一方向。第二极耳设有焊接部，第二部分覆盖第二极耳的焊接部的至少部分。在电池组受到外部的冲击力时，第二部分可以减小传递到第二极耳的焊接部的应力，降低焊接部撕裂的风险，进一步提高极耳与电路板组件连接的可靠性。
在一些实施方式中，第二部分覆盖第二极耳的焊接部的全部。
在一些实施方式中，沿第三方向，第二部分超出第二极耳的焊接部。
在一些实施方式中，壳体包括第一壳体和第二壳体，第一壳体沿第三方向的一端具有开口，第二壳体盖合于开口，第三方向垂直于第一方向。第四侧壁和开口沿第三方向相对设置。在第三方向上，第一绝缘件远离第四侧壁的端部不超出开口，可以限制第一绝缘件溢出到第一壳体的外部，降低第一绝缘件干涉第一壳体和第二壳体的装配的风险。
在一些实施方式中，多个电芯沿第二方向堆叠设置，电路板组件通过第一绝缘件与全部电芯的电芯主体连接，可提高电芯模组整体的结构强度。
在一些实施方式中，壳体包括第二侧壁，第二侧壁位于电芯模组背离电路板组件的一侧，第一侧壁和第二侧壁沿第一方向相对设置。电池组还包括第二绝缘件，第二侧壁通过第二绝缘件的至少部分与电芯主体连接。第二绝缘件可设于第二侧壁和电芯主体之间的间隙，以在电池组受到外部的冲击力时限制电芯主体之间相对于第二侧壁的运动，从而降低电芯主体受压变形、破损的风险，减小传递到极耳与电路板组件的连接处的应力，降低极耳变形、撕裂的可能性，从而提高了电池组的可靠性和安全性。
在一些实施例中，第二绝缘件连接于多个电芯的电芯主体。
在一些实施方式中，电池组还包括第一缓冲件，第一缓冲件设于电芯模组和第二侧壁之间并连接于电芯主体。第二绝缘件连接于第一缓冲件。第一缓冲件可以提高电 芯模组的整体强度，并在电芯模组的运输、装配过程中起到缓冲和防护作用，以降低电芯主体破损的风险。第二绝缘件连接于第一缓冲件，这样可以增大第一缓冲件与电芯模组的连接强度，降低第一缓冲件脱落的风险。
在一些实施方式中，第二绝缘件的一部分设于第一缓冲件和第二侧壁之间，以在电池组受到外部的冲击力时降低电芯主体的晃动幅度。
在一些实施方式中，第一缓冲件设置为多个，相邻的第一缓冲件之间形成通道，第二绝缘件的至少部分设于通道内。多个彼此独立的第一缓冲件可以增大通道的面积，以便于胶体的注入。
在一些实施例中，多个电芯沿第二方向布置。壳体包括两个第三侧壁，两个第三侧壁分别位于电芯模组沿第二方向的两侧。电池组还包括设置于第三侧壁和电芯模组之间的第二缓冲件，第二缓冲件连接于电芯主体。第二缓冲件可以吸收电芯主体的膨胀，减小电芯主体之间的压力，改善电芯主体的充放电性能。
在一些实施例中，电池组还包括设置于电芯主体之间的第三缓冲件。
在一些实施方式中，第一绝缘件通过将流动的绝缘材料注入壳体固化形成。
在一些实施方式中，第一绝缘件由发泡胶固化而成。发泡胶能够发泡并设于电芯主体与电路板组件之间的间隙，同时，发泡胶的重量小，这样可以提高电池组的体积能量密度和重量能量密度，并降低产品结构物料成本。
第二方面，本申请实施例提供了一种电池组的制造方法，包括：提供壳体；提供电路板组件和电芯模组，电芯模组包括多个电芯，各电芯包括电芯主体和极耳，电芯主体与电路板组件沿第一方向相对设置，极耳从电芯主体面向电路板组件的一端引出，并连接于电路板组件；将电路板组件和电芯模组安装到壳体内；在壳体内设置第一绝缘件，电路板组件通过第一绝缘件与至少部分电芯的电芯主体连接。
在一些实施方式中，第一绝缘件通过将流动的绝缘材料注入壳体固化形成。
在一些实施方式中，电池组的制造方法还包括：在壳体内涂覆粘接物形成第三绝缘件。电芯模组在涂覆粘接物之后安装到壳体内并粘接于粘接物。绝缘材料在粘接物固化后注入壳体形成第一绝缘件。
第三方面，本申请实施例提供了一种用电装置，包括用电主体和电池组，电池组连接于用电主体，并用于向用电主体提供电能。用电装置的电池组可以是第一方面任一实施方式提供的电池组，也可以是第二方面任一实施方式的制造方法获得的电池组。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例。
图1为本申请一些实施例提供的电池组的结构示意图；
图2为图1所示的电池组的爆炸示意图，其中，电池组的第一绝缘件和第二绝缘件省略；
图3为本申请一些实施例提供的电池组的一剖视示意图；
图4为本申请一些实施例提供的电池组的另一剖视示意图，其中，电池组的第一绝缘件和第二绝缘件省略；
图5为图4所示的电芯的爆炸示意图；
图6为图4所示的电池组在圆框A处的放大示意图；
图7为本申请一些实施例提供的电池组的结构示意图，其中第二部分示出；
图8为本申请另一些实施例提供的电池组的结构示意图，其中第二部分示出；
图9为本申请又一些实施例提供的电池组的结构示意图，其中第二部分示出；
图10为图3所示的电池组在圆框B处的放大示意图；
图11为本申请一些实施例提供的电池组的另一剖视示意图；
图12为本申请一些实施例提供的电池组在发泡胶膨胀前的一示意图；
图13为本申请一些实施例提供的电池组的再一剖视示意图；
图14为图13所示的电池组在圆框C处的放大示意图；
图15为本申请一些实施例提供的电池组的第一壳体和第三绝缘件的结构示意图；
图16为本申请一些实施例提供的电池组的制造方法的流程示意图；
图17为本申请一些实施例提供的用电装置的结构示意图。
具体实施方式中的附图标记如下：
1、壳体；11、第一侧壁；12、第二侧壁；13、第三侧壁；14、第四侧壁；141、第一凹部；142、第二凹部；15、卡扣；16、螺母柱；17、通孔；1a、第一壳体；1b、第二壳体；1c、开口；
2、电路板组件；21、基板；211、通孔；22、汇流部件；
3、电芯模组；31、电芯；311、电芯主体；3111、电芯壳体；3112、电极组件；3113、第一包装部；3113a、第一区域；3113b、第二区域；3114、第二包装部；3114a、第三区域；3114b、第四区域；312、极耳；312a、第一极耳；312b、第二极耳；312c、焊接部；
4、第一绝缘件；41、第一部分；42、第二部分；43、第三部分；
5、第二绝缘件；
6、第一缓冲件；61、通道；62、发泡胶；
7、第二缓冲件；
8、第三绝缘件；
9、第三缓冲件；
1000、电池组；2000、用电主体；
X、第一方向；Y、第二方向；Z、第三方向。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，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清楚地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。
本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。在本申请的实施例中，相同的附图标记表示相同的部件，并且为了简洁，在不同实施例中，省略对相同部件的详细说明。
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“连接”等应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请的实施例中，“平行”不仅包括绝对平行的情况，也包括了工程上常规认知的大致平行的情况；同时，“垂直”也不仅包括绝对垂直的情况，还包括工程上常规认知的大致垂直的情况。示例性地，两个方向的夹角为80°-90°，可认为两个方向垂直；两个方向的夹角为0°-10°，可认为两个方向平行。
下面结合附图描述本申请的电池组。
如图1至图4所示，本申请实施例的电池组1000包括壳体1、电路板组件2、电芯模组3以及第一绝缘件4。电路板组件2设置于壳体1内。电芯模组3包括多个电芯31，各电芯31包括电芯主体311和极耳312，电芯主体311与电路板组件2沿第一方向X相对设置，极耳312从电芯主体311面向电路板组件2的一端引出，并连接于电路板组件2。电路板组件2通过第一绝缘件4与至少部分电芯31的电芯主体311连接。
在本申请实施例中，在电池组1000受到外部的冲击力时，第一绝缘件4的设于电芯主体311和电路板组件2之间的部分能够限制电芯主体311相对于电路板组件2的运动，降低电芯主体311受压变形、破损的风险，减小传递到极耳312与电路板组件2的连接处的应力，降低极耳312变形、撕裂的可能性，从而提高了电池组1000的可靠性和安全性。第一绝缘件4连接电芯主体311和电路板组件2，可加强整个电池组1000的结构强度。
在一些实施例中，第一绝缘件4至少部分设于电芯主体311和电路板组件2之间。
在一些实施例中，第一绝缘件4通过将流动的绝缘材料注入壳体1后固化形成，比如低压注塑，比如注入胶水。
壳体1形成用于容纳电芯模组3的容纳腔室。壳体1能够从外侧保护电芯模组3，以限制液体或其它异物影响电芯模组3的充电或放电。
多个电芯31之间可串联或并联或混联，混联是指多个电芯31中既有串联又有并联。
如图5所示，电芯主体311包括电芯壳体3111、电极组件3112和电解液，电极组件3112和电解液容纳于电芯壳体3111内。电极组件3112包括正极极片、负极极片和隔离膜，电芯主体311主要依靠金属离子在正极极片和负极极片之间移动工作。极耳 312的一端伸出到电芯壳体3111的外部并用于与外部电路电连接，极耳312的另一端伸入到电芯壳体3111的内部并用于与电极组件3112电连接。极耳312用于将电极组件3112与外部电路电连接，以实现电芯31充电和放电。
示例性地，极耳312包括第一极耳312a和第二极耳312b，第一极耳312a和第二极耳312b中的一者用于与正极极片电连接，另一者用于与负极极片电连接。
示例性地，电芯壳体3111由铝塑膜制成。
电芯31可以是锂离子电芯、钠锂离子电芯、钠离子电芯、镁离子电芯或其它类型的电芯，本申请实施例对此并不限定。可选的，电芯31为软包电芯。
在一些实施例中，电芯壳体3111包括第一包装部3113和第二包装部3114，第一包装部3113连接第二包装部3114，第一包装部3113和第二包装部3114沿连接位置可以进行折叠，使得第一包装部3113和第二包装部3114重合，从而包覆电极组件3112。其他实施例中，第一包装部3113和第二包装部3114可为两个相离的独立部件。
示例性地，第一包装部3113包括第一区域3113a和从第一区域3113a的周侧向外延伸的第二区域3113b，第二包装部3114包括第三区域3114a和从第三区域3114a的周侧向外延伸的第四区域3114b。在第一包装部3113和第二包装部3114沿连接位置折叠后，第一区域3113a和第三区域3114a共同夹持电极组件3112，第二区域3113b和第四区域3114b重合并密封连接。极耳312从第二区域3113b和第四区域3114b之间穿过，以与电极组件3112电连接。
在一些实施例中，第一绝缘件4连接于第一区域3113a和第三区域3114a。
在一些实施例中，第一绝缘件4包覆极耳312穿过的第二区域3113b和第四区域3114b的部分。
在一些实施例中，电路板组件2连接于极耳312，以实现对电芯31的充电和放电的控制。示例性地，电路板组件2包括基板21和汇流部件22，汇流部件22设于基板21并连接于极耳312。示例性地，汇流部件22设置为多个，多个汇流部件22用于将多个电芯31串联、并联或混联。可选地，汇流部件22焊接于极耳312。可选的，电路板组件2包括电池管理系统。可选的，基板21包括印刷电路板。可选的，极耳312可直接焊接于基板21。
第一绝缘件4可以整体设于电芯主体311和电路板组件2之间，也可以部分设于电芯主体311和电路板组件2之间。在第一方向X上，第一绝缘件4可以设于电芯主体311和电路板组件2之间的间隙，以限制电池组1000受到外部的冲击力时电芯主体311的移动。
第一绝缘件4可通过粘接或其它方式连接于电芯主体311和电路板组件2。
在一些实施例中，壳体1包括第一壳体1a和第二壳体1b，第一壳体1a和第二壳体1b围成容纳腔室，电芯模组3和电路板组件2容纳于容纳腔室内。
第一壳体1a和第二壳体1b可通过粘接、紧固件连接或其它方式连为一体，以相互盖合并共同限定出用于容纳电芯模组3的容纳腔。
在一些实施例中，第一壳体1a上设有多个卡扣15，卡扣15用于与第二壳体1b配合，以将第一壳体1a和第二壳体1b卡接。示例性地，第一壳体1a和第二壳体1b还可 通过结构胶粘接固定。
在一些实施例中，第一壳体1a和第二壳体1b上分别设置多个螺母柱16和多个通孔17，螺母柱16和通孔17可用于与用电装置的其它结构连接，例如风扇、逆变器、控制板或其它部件。
在一些实施例中，壳体1包括第一侧壁11，沿第一方向X，电路板组件2位于第一侧壁11和电芯主体311之间。第一绝缘件4包括第一部分41和第二部分42，电路板组件2通过第一部分41与至少部分电芯31的电芯主体311连接，第二部分42设于第一侧壁11和电路板组件2之间。沿第一方向X，第一部分41设于电芯主体311和电路板组件2之间。
在本实施例中，第一部分41可在电池组1000受到外部的冲击力时限制电芯主体311相对于电路板组件2的运动，第二部分42能够在电池组1000受到外部的冲击力时限制电路板组件2相对于壳体1的运动，可减小传递到极耳312与电路板组件2的连接处的应力，降低极耳312变形、撕裂的可能性，从而提高了电池组1000的可靠性和安全性。
在一些实施例中，电路板组件2通过第二部分42与第一侧壁11连接，可加强整个电池组1000的结构强度，提高电池组1000的可靠性和安全性。
在一些实施例中，电路板组件2设有通孔211，极耳312包括焊接部312c，焊接部312c穿过通孔211，并连接于电路板组件2远离电芯主体311的一侧。第二部分42覆盖焊接部312c的至少部分。
极耳312的至少部分位于电路板组件2的背离电芯主体311的一侧、焊接于电路板组件2并形成焊接部312c。
在一些实施例中，电路板组件2包括基板21和汇流部件22，通孔211设于基板21，汇流部件22设置于基板21的面向第一侧壁11的一侧，极耳312穿过通孔211、焊接于汇流部件22并形成焊接部312c。
在本实施例中，第二部分42可覆盖焊接部312c的至少部分，在电池组1000受到外部的冲击力时，第二部分42可以减小传递到焊接部312c的应力，降低焊接部312c撕裂的风险，提高极耳312与电路板组件2连接的可靠性。
在一些实施例中，第一绝缘件4还包括第三部分43，第三部分43的至少部分位于通孔211内，并连接第一部分41和第二部分42。
在本实施例中，第三部分43能够连接第一部分41和第二部分42，从而提高第一绝缘件4的整体强度，降低第一绝缘件4与电路板组件2分离的风险。
在本实施例中，第三部分43减小极耳312在通孔211内的移动，降低极耳312撕裂的风险。
在一些实施例中，通孔211设置为多个，各通孔211中对应设有第三部分43。
在一些实施例中，第一绝缘件4连接于多个电芯31的电芯主体311。
在本实施例中，第一绝缘件4能够将多个电芯31的电芯主体311连为一体，这样可以提高电芯模组3整体的结构强度。
在一些实施例中，多个电芯31沿第二方向Y堆叠设置，电路板组件2通过第一绝 缘件4与全部电芯31的电芯主体311连接，可提高电芯模组3整体的结构强度。
在一些实施例中，第一绝缘件4由胶体固化而成。在本实施例中，胶体具有流动性，其能够有效地设于电芯主体311与电路板组件2之间的间隙，并直接粘接到电芯主体311与电路板组件2。
在一些实施例中，第一绝缘件4由发泡胶固化而成。
发泡胶是一种具有发泡特性和粘结特性的胶，其在与空气或水分接触后能够迅速膨胀、固化并形成泡沫。固化后的发泡胶泡沫具有填缝、粘结、密封、隔热等多种效果。
在本实施例中，发泡胶能够发泡并设于电芯主体311与电路板组件2之间的间隙，同时，发泡胶的重量小，这样可以提高电池组1000的体积能量密度和重量能量密度，并降低产品结构物料成本。
在一些实施例中，本申请采用发泡倍率为2-20倍的发泡胶。
在一些实施例中，壳体1包括第一壳体1a和第二壳体1b，第一壳体1a沿第三方向Z的一端具有开口1c，第二壳体1b盖合于开口1c，第三方向Z垂直于第一方向X。第一壳体1a包括与所述第一侧壁11相邻设置的第四侧壁14，沿第三方向Z,第四侧壁14位于电芯模组3背离第二壳体1b的一侧。第四侧壁14和开口1c沿第三方向Z相对设置。第一绝缘件4连接于第四侧壁14；在第三方向Z上，第一绝缘件4远离第四侧壁14的端部不超出开口1c，可以限制第一绝缘件4溢出到第一壳体1a的外部，降低第一绝缘件4干涉第一壳体1a和第二壳体1b的装配的风险。
在一些实施例中，在装配电池组1000的过程中，使用电芯主体311和电路板组件2之间的间隙作为流道进行灌胶，发泡胶流动到第四侧壁14上并大体沿第三方向Z发泡，发泡胶可以设于电芯主体311和电路板组件2之间的间隙、电路板组件2和第一侧壁11之间的间隙以及通孔211。通过合理地设置灌胶量，以控制发泡胶发泡的高度，进而降低发泡胶溢出到第一壳体1a的外部的风险。
在一些实施例中，极耳312包括第一极耳312a，第一极耳312a设有焊接部312c，第二部分42覆盖第一极耳312a的焊接部312c的至少部分，第二部分42可以减小传递到第一极耳312a的焊接部312c的应力，降低焊接部312c撕裂的风险，提高极耳312与电路板组件2连接的可靠性。
在一些实施例中，第二部分42覆盖第一极耳312a的焊接部312c的全部。
在一些实施例中，第一极耳312a和第二极耳312b设于电芯壳体3111相对的两端，第一极耳312a设有焊接部312c。第二部分42覆盖第一极耳312a的焊接部312c。在电池组1000受到外部的冲击力时，第二部分42可以减小传递到第一极耳312a的焊接部312c的应力，降低焊接部312c撕裂的风险，提高第一极耳312a与电路板组件2连接的可靠性。
在一些实施例中，如图7所示，极耳312包括沿第三方向Z间隔设置第一极耳312a和第二极耳312b。示例性地，沿第一方向X观察时，在第三方向Z上，第一极耳312a位于第二极耳312b和第四侧壁14之间。
第一极耳312a和第二极耳312b均设有焊接部312c。第二部分42覆盖第一极耳 312a的焊接部312c。
第二部分42可覆盖第一极耳312a的焊接部312c，在电池组1000受到外部的冲击力时，第二部分42可以减小传递到第一极耳312a的焊接部312c的应力，降低焊接部312c撕裂的风险，提高极耳312与电路板组件2连接的可靠性。
在一些实施例中，在第三方向Z上，第二部分42远离第四侧壁14的端部超出第一极耳312a，以覆盖第一极耳312a的焊接部312c。
在一些实施例中，第二部分42覆盖多个第一极耳312a的焊接部312c。
在一些实施例中，第二部分42覆盖所有的第一极耳312a的焊接部312c。
在一些实施例中，如图8所示，第二部分42还覆盖第二极耳312b的焊接部312c的至少部分。在电池组1000受到外部的冲击力时，第二部分42可以减小传递到第二极耳312b的焊接部312c的应力，降低焊接部312c撕裂的风险，进一步提高极耳312与电路板组件2连接的可靠性。
在一些实施例中，第三方向Z上，第二部分42远离第四侧壁14的端部超出第二极耳312b沿第三方向Z的中点。
在一些实施例中，如图9所示，第二部分42覆盖第二极耳312b的焊接部312c的全部。
在一些实施例中，沿第三方向Z，第二部分42超出第二极耳312b的焊接部312c。
在一些实施例中，第二部分42在第三方向Z上超出第二极耳312b并覆盖第二极耳312b的焊接部312c。
在一些实施例中，如图9所示，第二部分42覆盖所有的第二极耳312的焊接部312c。
在一些实施例中，电芯模组3和电路板组件2均设置为多个，各电芯模组3与对应的电路板组件2连接。本实施例可以增大电池组1000的容量。
在一些实施例中，如图6所示，第四侧壁14设有第一凹部141和第二凹部142，电路板组件2的一端可插入第一凹部141并固定于第四侧壁14；第二凹部142可用于容纳电芯主体311沿第三方向Z的一端；第二凹部142可为与电芯主体311的端部形状对应的仿形槽。
如图10至图12所示，在一些实施例中，壳体1包括第二侧壁12，第二侧壁12位于电芯模组3背离电路板组件2的一侧。第一侧壁11和第二侧壁12沿第一方向X相对设置。电池组1000还包括第二绝缘件5，第二侧壁12通过第二绝缘件5的至少部分与电芯主体311连接。
第二绝缘件5的至少部分位于第二侧壁12和电芯主体311之间。
在本实施例中，第二绝缘件5可设于第二侧壁12和电芯主体311之间的间隙，以在电池组1000受到外部的冲击力时限制电芯主体311之间相对于第二侧壁12的运动，从而降低电芯主体311受压变形、破损的风险，减小传递到极耳312与电路板组件2的连接处的应力，降低极耳312变形、撕裂的可能性，从而提高了电池组1000的可靠性和安全性。
在一些实施例中，第二绝缘件5连接于多个电芯31的电芯主体311。
在本实施例中，第二绝缘件5能够将多个电芯31的电芯主体311连为一体，这样可以提高电芯模组3整体的结构强度。
在一些实施例中，第二绝缘件5由胶体固化而成。示例性地，第二绝缘件5由发泡胶固化而成。
在一些实施例中，电池组1000还包括第一缓冲件6，第一缓冲件6设于电芯模组3和第二侧壁12之间并连接于电芯主体311。第二绝缘件5连接于第一缓冲件6。
在本实施例中，第一缓冲件6可以提高电芯模组3的整体强度，并在电芯模组3的运输、装配过程中起到缓冲和防护作用，以降低电芯主体311破损的风险。第二绝缘件5连接于第一缓冲件6，这样可以增大第一缓冲件6与电芯模组3的连接强度，降低第一缓冲件6脱落的风险。
在一些实施例中，第一缓冲件6由泡棉制成并粘接于电芯模组3。
在一些实施例中，第二绝缘件5的一部分设于第一缓冲件6和第二侧壁12之间。在本实施例中，第二绝缘件5可设于第一缓冲件6和第二侧壁12之间的空隙，以在电池组受到外部的冲击力时降低电芯主体311的晃动幅度。
在一些实施例中，第一缓冲件6设置为多个，相邻的第一缓冲件6之间形成通道61，第二绝缘件5的至少部分设于通道61内。在本实施例中，多个彼此独立的第一缓冲件6可以增大通道61的面积，以便于胶体的注入。
在一些实施例中，多个电芯31沿第二方向Y布置。多个第一缓冲件6沿第二方向Y和第三方向Z呈间隔布置，第三方向Z垂直于第二方向Y和第一方向X。
在一些实施例中，第二绝缘件5沿第三方向Z的一端连接于第四侧壁14，另一端不超出开口1c，可以限制第二绝缘件5溢出到第一壳体1a的外部，降低第二绝缘件5干涉第一壳体1a和第二壳体1b的装配的风险。
在一些实施例中，在装配电池组1000的过程中，通过通道61进行灌胶，发泡胶62流动到第四侧壁14上并大体沿第三方向Z发泡，发泡胶可设于电芯主体311和第二侧壁12之间的间隙。示例性地，如图12所示，发泡胶62可沿着箭头所指向的路径膨胀。
在一些实施例中，在第三方向Z上，第二绝缘件5远离第四侧壁14的端部超出电芯主体311沿第三方向Z的中点。
如图13至图15所示，在一些实施例中，多个电芯31沿第二方向Y布置。壳体1包括两个第三侧壁13，两个第三侧壁13分别位于电芯模组3沿第二方向Y的两侧。电池组1000还包括设置于第三侧壁13和电芯模组3之间的第二缓冲件7，第二缓冲件7连接于电芯主体311。
在本实施例中，第二缓冲件7可以吸收电芯主体311的膨胀，减小电芯主体311之间的压力，改善电芯主体311的充放电性能。
在一些实施例中，第二缓冲件7由泡棉制成，第二缓冲件7可粘接于电芯主体311。
在一些实施例中，壳体1还包括与第一侧壁11相邻设置第四侧壁14，。电池组1000还包括第三绝缘件8，第三绝缘件8将多个电芯31连接于第四侧壁14。
示例性地，第四侧壁14和开口1c沿第三方向Z相对设置。第三绝缘件8的至少部 分设置于电芯模组3和第四侧壁14之间。第三绝缘件8沿第二方向Y连续设置并连接于多个电芯31的电芯主体311和第四侧壁14。可选的，第三绝缘件8连接于第二缓冲件7。
在本实施例中，第三绝缘件8将电芯主体311连接到第四侧壁14，以实现电芯主体311的固定，提高电池组1000整体的结构强度。第三绝缘件8和第二缓冲件7还能够对第一绝缘件4进行限位，减少第一绝缘件4的进入电芯主体311和第四侧壁14之间的部分以及第一绝缘件4的进入电芯主体311和第三侧壁13之间的部分，节省物料，提高电池组1000的能量密度。
在一些实施例中，第三绝缘件8可限制第一绝缘件4进入第三绝缘件8和第四侧壁14之间的间隙。
在一些实施例中，第三绝缘件8包括粘接物，第三绝缘件8将多个电芯31粘接于第四侧壁14，减小第三绝缘件8和第四侧壁14的间隙，以限制第一绝缘件4进入第三绝缘件8和第四侧壁14之间的间隙。可选地，第三绝缘件8包括胶水、双面胶水、发泡胶等其中至少一种。可选地，在胶水固化并形成第三绝缘件8后，再向第一壳体1a内注入用于固化形成第一绝缘件4的绝缘材料。可选的，第三绝缘件8包括两个或两个以上的组成的部分，比如包括可限制胶水通过的泡棉和设于泡棉外表面的双面胶。
在一些实施例中，第三绝缘件8的至少部分设于第二凹部142。
在一些实施例中，第三绝缘件8连接于第二缓冲件7靠近第四侧壁14的一端。第三绝缘件8和第二缓冲件7还能够对第二绝缘件5进行限位，减少第二绝缘件5的进入电芯主体311和第四侧壁14之间的部分以及第二绝缘件5的进入电芯主体311和第三侧壁13之间的部分，节省物料。
在一些实施例中，第三绝缘件8设置为多个，多个第三绝缘件8沿第一方向X间隔设置。本实施例可以节省结构胶的用量，提高电池组1000的能量密度。
在一些实施例中，第三绝缘件8为两部分；其中一部分第三绝缘件8靠近第一侧壁11设置，以对第一绝缘件4进行限位，另一部分第三绝缘件8靠近第二侧壁12设置，以对第二绝缘件5进行限位。
在一些实施例中，电池组1000还包括设置于电芯主体311之间的第三缓冲件9。第三缓冲件9可用于吸收电芯主体311在充放电过程中的膨胀。示例性地，第三缓冲件9由泡棉制成。
在一些实施例中，第三绝缘件8连接于第三缓冲件9靠近第四侧壁14的一端。第三绝缘件8和第三缓冲件9还能够对第一绝缘件4进行限位，减少第一绝缘件5的进入电芯主体311和第四侧壁14之间，节省物料。
如图16所示，本申请一些实施例还提供了一种电池组的制造方法，其包括：
S100、提供壳体1；
S200、提供电路板组件2和电芯模组3，电芯模组3包括多个电芯31，各电芯31包括电芯主体311和极耳312，电芯主体311与电路板组件2沿第一方向X相对设置，极耳312从电芯主体311面向电路板组件2的一端引出，并连接于电路板组件2；
S300、将电路板组件2和电芯模组3安装到壳体1内；
S400、在壳体1内设置第一绝缘件4，电路板组件2通过第一绝缘件4与至少部分电芯31的电芯主体311连接。
在一些实施例中，在步骤S400中，第一绝缘件4通过将流动的绝缘材料注入壳体1固化形成。可选地，绝缘材料为发泡胶。
在一些实施例中，电池组的制造方法还包括步骤S500：在壳体1内涂覆粘接物形成第三绝缘件8。电芯模组3在涂覆粘接物之后安装到壳体1内并粘接于粘接物。绝缘材料在粘接物固化后注入壳体1形成第一绝缘件4。步骤S500在步骤S100之后、步骤S200之前执行。
粘接物固化后能够限制绝缘材料通过电芯主体311和第四侧壁14之间的间隙，从而节省物料，提高电池组1000的能量密度。
通过上述电池组的制造方法制造出的电池组的相关结构，可参见上述各实施例提供的电池组。
如图17所示，本申请一些实施例提供了一种用电装置，其包括用电主体2000和电池组1000。电池组1000连接于用电主体2000，并用于向用电主体2000提供电能。
电池组1000可为上述任一实施例提供的电池组1000。
电池组1000可为上述任一实施例制造方法获得的电池组1000。
用电主体2000在电能的驱动下能够实现设定的功能。用电装置可以是便携式设备、笔记本电脑、电动玩具和电动工具、储能系统等等。电动工具包括金属切削电动工具、清洁工具等，例如，电钻、电动扳手、吸尘器、扫地机器人等等。本申请实施例对上述用电装置不做特殊限制。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件，尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (24)

  1. 一种电池组，包括：
    壳体；
    电路板组件，设置于所述壳体内；
    电芯模组，包括多个电芯，各所述电芯包括电芯主体和极耳，所述电芯主体与所述电路板组件沿第一方向相对设置，所述极耳从所述电芯主体面向所述电路板组件的一端引出，并连接于所述电路板组件；
    第一绝缘件，所述电路板组件通过所述第一绝缘件与至少部分电芯的电芯主体连接。
  2. 根据权利要求1所述的电池组，所述壳体包括第一侧壁，沿所述第一方向，所述电路板组件位于所述第一侧壁和所述电芯主体之间；
    所述第一绝缘件包括第一部分和第二部分，所述电路板组件通过所述第一部分与所述至少部分电芯的电芯主体连接，所述第二部分设于所述第一侧壁和所述电路板组件之间。
  3. 根据权利要求2所述的电池组，所述电路板组件通过所述第二部分与所述第一侧壁连接。
  4. 根据权利要求2所述的电池组，所述电路板组件设有通孔；
    所述极耳包括焊接部，所述焊接部穿过所述通孔，并连接于所述电路板组件远离所述电芯主体的一侧，所述第二部分覆盖所述焊接部的至少部分。
  5. 根据权利要求4所述的电池组，所述第一绝缘件还包括第三部分，所述第三部分的至少部分位于所述通孔内，并连接所述第一部分和所述第二部分。
  6. 根据权利要求2所述的电池组，所述电池组还包括第三绝缘件，所述壳体包括与所述第一侧壁相邻设置的第四侧壁，所述第三绝缘件将多个所述电芯连接于所述第四侧壁。
  7. 根据权利要求6所述的电池组，所述第三绝缘件包括粘接物，第三绝缘件将多个所述电芯粘接于所述第四侧壁。
  8. 根据权利要求4所述的电池组，所述极耳包括第一极耳，所述第一极耳设有所述焊接部，所述第二部分覆盖所述第一极耳的焊接部的至少部分。
  9. 根据权利要求8所述的电池组，所述第二部分覆盖所述第一极耳的焊接部的全部。
  10. 根据权利要求8所述的电池组，所述极耳还包括沿第三方向与所述第一极耳间隔设置的第二极耳，所述第三方向垂直于所述第一方向；
    所述第二极耳设有所述焊接部，所述第二部分覆盖所述第二极耳的焊接部的至少部分。
  11. 根据权利要求10所述的电池组，所述第二部分覆盖所述第二极耳的焊接部的全部。
  12. 根据权利要求11所述的电池组，沿所述第三方向，所述第二部分超出所述第二极耳的焊接部。
  13. 根据权利要求6所述的电池组，所述壳体包括第一壳体和第二壳体，所述第一壳体沿第三方向的一端具有开口，所述第二壳体盖合于所述开口，所述第三方向垂直于所述第一方向；
    所述第四侧壁和所述开口沿所述第三方向相对设置；在所述第三方向上，所述第一绝缘件远离所述第四侧壁的端部不超出所述开口。
  14. 根据权利要求1所述的电池组，所述多个电芯沿第二方向堆叠设置，所述电路板组件通过所述第一绝缘件与全部电芯的电芯主体连接。
  15. 根据权利要求1-14任一项所述的电池组，所述壳体包括第二侧壁，所述第二侧壁位于所述电芯模组背离所述电路板组件的一侧，所述第一侧壁和所述第二侧壁沿所述第一方向相对设置；
    所述电池组还包括第二绝缘件，所述第二侧壁通过所述第二绝缘件的至少部分与所述电芯主体连接。
  16. 根据权利要求15所述的电池组，所述电池组还包括第一缓冲件，所述第一缓冲件设于所述电芯模组和所述第二侧壁之间并连接于所述电芯主体；
    所述第二绝缘件连接于所述第一缓冲件。
  17. 根据权利要求16所述的电池组，所述第二绝缘件的一部分设于所述第一缓冲件和所述第二侧壁之间。
  18. 根据权利要求17所述的电池组，所述第一缓冲件设置为多个，相邻的所述第一缓冲件之间形成通道，所述第二绝缘件的至少部分设于所述通道内。
  19. 根据权利要求1所述的电池组，所述第一绝缘件通过将流动的绝缘材料注入所述壳体固化形成。
  20. 根据权利要求1所述的电池组，所述第一绝缘件由发泡胶固化而成。
  21. 一种电池组的制造方法，包括：
    提供壳体；
    提供电路板组件和电芯模组，所述电芯模组包括多个电芯，各所述电芯包括电芯主体和极耳，所述电芯主体与所述电路板组件沿第一方向相对设置，所述极耳从所述电芯主体面向所述电路板组件的一端引出，并连接于所述电路板组件；
    将所述电路板组件和所述电芯模组安装到所述壳体内；
    在所述壳体内设置第一绝缘件，所述电路板组件通过所述第一绝缘件与至少部分电芯的电芯主体连接。
  22. 根据权利要求21所述的制造方法，所述第一绝缘件通过将流动的绝缘材料注入所述壳体固化形成。
  23. 根据权利要求22所述的制造方法，还包括：在所述壳体内涂覆粘接物形成第三绝缘件；
    其中，所述电芯模组在涂覆所述粘接物之后安装到所述壳体内并粘接于所述粘接物；
    所述绝缘材料在所述粘接物固化后注入所述壳体形成所述第一绝缘件。
  24. 一种用电装置，包括：
    用电主体；以及
    如权利要求1-20任一项所述的电池组或通过如权利要求21-23所述电池组的制造方法获得的电池组，所述电池组连接于所述用电主体，并用于向所述用电主体提供电能。
PCT/CN2022/084535 2022-03-31 2022-03-31 电池组、电池组的制造方法和用电装置 WO2023184389A1 (zh)

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Publication number Priority date Publication date Assignee Title
JP2001291500A (ja) * 2000-04-07 2001-10-19 Sanyo Electric Co Ltd 電池パック
CN209169222U (zh) * 2018-11-28 2019-07-26 广州极飞科技有限公司 电池组件、电池模组以及无人机
CN210668519U (zh) * 2019-10-28 2020-06-02 广州极飞科技有限公司 电池模组以及无人机
CN113328189A (zh) * 2021-05-25 2021-08-31 东莞新能安科技有限公司 一种电池组以及用电设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001291500A (ja) * 2000-04-07 2001-10-19 Sanyo Electric Co Ltd 電池パック
CN209169222U (zh) * 2018-11-28 2019-07-26 广州极飞科技有限公司 电池组件、电池模组以及无人机
CN210668519U (zh) * 2019-10-28 2020-06-02 广州极飞科技有限公司 电池模组以及无人机
CN113328189A (zh) * 2021-05-25 2021-08-31 东莞新能安科技有限公司 一种电池组以及用电设备

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