WO2022205047A1 - 电池组及用电装置 - Google Patents

电池组及用电装置 Download PDF

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Publication number
WO2022205047A1
WO2022205047A1 PCT/CN2021/084342 CN2021084342W WO2022205047A1 WO 2022205047 A1 WO2022205047 A1 WO 2022205047A1 CN 2021084342 W CN2021084342 W CN 2021084342W WO 2022205047 A1 WO2022205047 A1 WO 2022205047A1
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WO
WIPO (PCT)
Prior art keywords
battery pack
support
circuit board
battery
support member
Prior art date
Application number
PCT/CN2021/084342
Other languages
English (en)
French (fr)
Inventor
李�浩
黎昊宇
王鹏飞
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 CN202180096148.8A priority Critical patent/CN117157812A/zh
Priority to EP21933724.3A priority patent/EP4318753A1/en
Priority to PCT/CN2021/084342 priority patent/WO2022205047A1/zh
Publication of WO2022205047A1 publication Critical patent/WO2022205047A1/zh
Priority to US18/478,100 priority patent/US20240030540A1/en

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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
    • H01M50/242—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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H01M50/204—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
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch 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
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H01M50/287—Fixing of circuit boards to lids or covers
    • 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
    • H01M50/291—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 characterised by their shape
    • 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
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the technical field of lithium batteries, and in particular, to a battery pack and an electrical device.
  • the battery cell is often fixed in the casing by means of a bracket.
  • the existing bracket for fixing the battery cell has a complex structure and too many components, which increases the difficulty of assembling the battery.
  • the battery core and the casing are made to adhere, which is not conducive to assembly and heat dissipation of the battery core.
  • An embodiment of the present application provides a battery pack, which includes a casing, a plurality of battery cells disposed in the casing, and a support member, wherein the plurality of battery cells are stacked along a first direction, and the support member is disposed on two sides.
  • the support member includes a first support portion and a second support portion disposed opposite to each other; along the second direction, the housing includes a first convex portion and a second convex portion, and the support member It is arranged between the first convex portion and the second convex portion, the first supporting portion is connected to the first convex portion, the second supporting portion is connected to the second convex portion, and the first supporting portion is connected to the second convex portion.
  • the second direction is perpendicular to the first direction.
  • the support is arranged between the two cells, the first support is connected to the first convex portion, and the second support is connected to the second convex, so that the support is connected to the two cells and
  • the two battery cells are fixed in the casing, and the supporting member has a simple structure, and the battery cells can be fixed in the casing without cooperating with other components during the battery assembly process, thereby reducing the difficulty of assembling the battery.
  • the first support portion includes at least two support blocks, and along the third direction, the two support blocks are respectively disposed on opposite sides of the support member, and the two support blocks are located between the two support blocks.
  • a through slot is arranged therebetween, and the third direction is perpendicular to the first direction and the second direction at the same time.
  • a through slot is formed between the two support blocks, so that the heat generated by the cell is discharged through the through slot, so as to facilitate the heat dissipation of the cell.
  • the battery pack further includes a buffer member, one side of the buffer member is connected to the support member, and the opposite side is connected to the battery cells disposed adjacent to the support member.
  • a buffer member is arranged between the support member and the cell, so that when the cell shakes, the buffer member can relieve the impact force between the cell and the support member, thereby preventing the cell from being damaged during shaking.
  • the battery core includes an encapsulation case, an electrode assembly accommodated in the encapsulation case, and a first tab connected to the electrode assembly and extending out of the encapsulation case.
  • the tab includes a first welding portion disposed outside the package shell, and viewed along a first direction, the first welding portion and the first supporting portion are located on opposite sides of the first protruding portion.
  • the first welding part and the first supporting part are arranged on opposite sides of the first convex part, so that a space is formed between the first welding part and the first supporting part, so that the heat generated by the battery core can be removed from the space. Exhaust to further facilitate the heat dissipation of the battery cells.
  • the encapsulation case includes a first part and a second part arranged in sequence, the first part is used for accommodating the electrode assembly, and the first tab extends out of the second part.
  • the support portion is provided with a through slot, and the through slot is arranged between the second portions of the two adjacent battery cells.
  • the through slot is arranged between the second parts of two adjacent cells, so that the heat generated by the cell is discharged from the second part through the through slot, thereby further facilitating the heat dissipation of the cell.
  • the first tab further includes a first extension part provided outside the package shell, and the first extension part is provided between the first welding part and the second part. During the time, viewed along the first direction, the first extension portion is at least partially located in the through groove.
  • the first extension part is at least partially located in the through groove, so that the first extension part is communicated with the through groove, which facilitates the heat generated by the cell to be discharged from the first extension part through the through groove.
  • the battery pack further includes a first circuit board, the first welding part is provided on the first circuit board, and viewed along the first direction, the first circuit board and The first support portion is located on opposite sides of the first protruding portion.
  • the first circuit board and the first support portion are located on opposite sides of the first convex portion, so that the first circuit board is separated from the battery core and the support member during installation, which is conducive to the heat dissipation of the battery core, and the When the battery cell shakes, the collision between the battery cell and the first circuit board is reduced, thereby reducing the probability of damage to the battery cell and the first circuit board when the battery core is shaken.
  • the battery pack further includes a connecting member, the connecting member includes a connecting plate, a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are provided on the At opposite ends of the connecting plate, the first circuit board is disposed between the first connecting portion and the second connecting portion.
  • the above solution facilitates the installation of the first circuit board by arranging the first circuit board between the first connecting portion and the second connecting portion.
  • the connecting member further includes a fixing portion, the fixing portion is provided on the connecting plate, and the fixing portion is used to fix the first circuit board and the connecting member.
  • the fixing part is arranged on the connecting plate, and the fixing part is fixed on the first circuit board, so that when the first circuit board is placed between the first connecting part and the second connecting part, it is convenient for the first circuit board to be fixed.
  • a nut is sleeved on the fixing part to lock the first circuit board and the connecting piece, so that the torque of the rotating nut is transmitted to the connecting plate, so as to avoid the first circuit board from being stressed and reduce the damage of the first circuit board probability.
  • the first connecting portion is provided with a first groove, and the first groove is provided on the first convex portion.
  • the first groove is formed on the first connecting portion, and the first groove is sleeved on the first convex portion to facilitate fixing the connecting piece in the housing.
  • the second connecting portion is provided with a second slot and a third slot, and the second slot and the third slot are provided on opposite sides of the first circuit board, and the The second groove is disposed on the second convex portion, and the third groove is used for accommodating the connection structure disposed on the first circuit board.
  • the second slot and the third slot are arranged on opposite sides of the first circuit board, so that when the second slot cooperates with the first slot to fix the connector in the housing, the third slot is located in the same direction as the first slot or the first slot.
  • the second slot is opposite to two different sides of the first circuit board, thereby facilitating the installation of the wire harness, and preventing multiple wire harnesses from interfering with each other when there are too many wire harnesses.
  • the housing is provided with a first side wall and a second side wall opposite to each other along the third direction, and the first convex portion and the second convex portion are provided on the first side wall , the third direction is perpendicular to the first direction and the second direction.
  • the housing is provided with a first convex portion and a second convex portion that can cooperate with the first supporting portion and the second supporting portion, so as to fix the supporting member in the housing.
  • An electrical device includes a main body and the above-mentioned battery pack accommodated in the main body.
  • the battery pack of the present application includes a casing, a plurality of cells arranged in the casing, and a support member.
  • the above solution is to set the support member between the two cells, and connect the first support portion to the first protrusion.
  • the second support part is connected to the second convex part, so that the support part connects the two cells and fixes the two cells in the casing.
  • the support part has a simple structure and reduces other components in the battery assembly process, thereby The difficulty of assembling the battery is reduced. Further, there are more gaps between the battery core and the casing, which is conducive to heat dissipation.
  • FIG. 1 is an exploded view of a battery pack in one embodiment.
  • FIG. 2 is a schematic three-dimensional structural diagram of the housing shown in FIG. 1 .
  • FIG. 3 is a side view of the battery pack shown in FIG. 2 .
  • FIG. 4 is a schematic three-dimensional structural diagram of the battery cell, the supporting member, the first circuit board, the second circuit board and the connecting member shown in FIG. 1 .
  • FIG. 5 is a schematic three-dimensional schematic diagram of a partial structure of the battery cell shown in FIG. 4 .
  • FIG. 6 is a cross-sectional view of the battery cell, the support member, the first circuit board, the second circuit board and the connecting member shown in FIG. 4 .
  • FIG. 7 is a schematic three-dimensional structural diagram of the support member shown in FIG. 1 .
  • FIG. 8 is a schematic three-dimensional structural diagram of the first circuit board and the connector shown in FIG. 2 .
  • FIG. 9 is a schematic three-dimensional structural diagram of the connector shown in FIG. 8 .
  • the first fixed part 111 The first fixed part 111
  • the second welding part 241 The second welding part 241
  • the first support section 31 The first support section 31
  • the third support 33 is the third support 33
  • the second heat sink 91 The second heat sink 91
  • a component when a component is considered to be “connected” to another component, it can be directly connected to another component or there may be an intervening component at the same time. When a component is considered to be “set on” another component, it may be located directly on the other component or may co-exist with an intervening component.
  • the terms “top,” “bottom,” “top,” “bottom,” “left,” “right,” “front,” “back,” and similar expressions are used herein for illustrative purposes only.
  • An embodiment of the present application provides a battery pack, including a case, a plurality of cells and a support member disposed in the case, and the plurality of cells are stacked along a first direction, and the first direction is any In the length direction of the casing, along the first direction, the support member is arranged between the two battery cores, and the support member includes a first support portion and a second support portion arranged oppositely; along the second direction,
  • the housing includes a first protruding portion and a second protruding portion, the support member is arranged between the first protruding portion and the second protruding portion, and the first supporting portion is connected to the first protruding portion , the second support portion is connected to the second protruding portion, and the second direction is the width direction of the housing.
  • the supporting member is arranged between two battery cells, the first supporting portion is connected to the first convex portion, and the second supporting portion is connected to the second convex portion, so that the supporting member connects the two
  • the battery cell and the two battery cells are fixed in the casing, and the supporting member has a simple structure, and the battery core can be fixed in the casing without cooperating with other components during the battery assembly process, thereby reducing the assembly difficulty of the battery.
  • an embodiment of the present application provides a battery pack 100 , which includes a casing 10 , a plurality of cells 20 disposed in the casing 10 , and a support member 30 .
  • the plurality of battery cells 20 are stacked along the first direction A.
  • a support member 30 is provided between the two battery cells 20 , and the support member 30 includes a first support portion 31 and a second support portion 32 that are oppositely arranged. .
  • the housing 10 includes a first protruding portion 13 and a second protruding portion 14 , the supporting member 30 is disposed between the first protruding portion 13 and the second protruding portion 14 , and the first supporting portion 31 is connected to the first protruding portion 13 and the second protruding portion 14 .
  • a convex portion 13, the second support portion 32 is connected to the second convex portion 14, preferably, the second direction B is perpendicular to the first direction A.
  • the housing 10 includes a first cover plate 11 and a second cover plate 12 that are detachably connected.
  • the first cover plate 11 is provided with a first fixing portion 111 and a second fixing portion 112
  • the second cover plate 12 is provided with a third fixing portion 121 and a fourth fixing portion 122
  • the first fixing portion 111 can be combined with the third fixing portion 121 and the third fixing portion 122 .
  • the fixing portion 121 is fixed, and the second fixing portion 112 can be fixed with the fourth fixing portion 122, so as to fix or separate the first cover plate 11 and the second cover plate 12, so as to facilitate the arrangement of a plurality of stacked cells 20 on the first cover plate 11 and the second cover plate 12. between a cover plate 11 and a second cover plate 12 .
  • first fixing portion 111 , the second fixing portion 112 , the third fixing portion 121 and the fourth fixing portion 122 are structures that can be fixedly connected to each other, such as a hook structure and the like.
  • first cover plate 11 includes a first side wall 11 a
  • second cover plate 12 includes a second side wall 12 a.
  • the first side wall 11 a and the second side wall 12 a are disposed opposite to the battery cell 20 sides.
  • the third direction C is perpendicular to the first direction A and the second direction B at the same time.
  • the first protruding portion 13 and the second protruding portion 14 are disposed on the first side wall 11a.
  • the first convex portion 13 and the second convex portion 14 are disposed from the first side wall 11a toward the second side wall 12a.
  • the first convex portion 13 is perpendicular to the first side wall 11a
  • the second convex portion 14 is perpendicular to the first side wall 11a.
  • the first convex portion 13, the second convex portion 14 and the first side wall 11a are integrally formed, for example, integrally formed by an injection molding process; for example, an aluminum extrusion process.
  • the first protruding portion 13 is detachably connected to the first side wall 11a, such as through bolts.
  • the second protruding portion 14 is detachably connected to the first side wall 11a, such as through bolts.
  • the first support portion 31 and the second support portion 32 can abut against the first convex portion 13 and the second convex portion 14 along the second direction B, so as to restrict the movement of the battery cell 20 along the second direction B. As shown in FIG.
  • the first support portion 31 and the second support portion 32 are conducive to conducting the impact force through the first convex portion 13 and the second convex portion 14 to the On the first side wall 11a, a protection cell 20 is provided.
  • the first protrusions 13 are continuously arranged along the first direction A, and the second protrusions 14 are continuously arranged along the first direction A.
  • the battery pack 100 includes a plurality of first support members 30, a plurality of first support portions The 31 and the second supporting portion 32 are provided between the first convex portion 13 and the second convex portion 14 , which is beneficial to further restrict the movement of the battery cell 20 along the second direction B. As shown in FIG. Preferably, a plurality of first support parts 31 and second support parts 32 are provided between the first convex part 13 and the second convex part 14 , which facilitates the impact force to pass through the first convex part 13 and the second convex part 14 .
  • the battery pack 100 includes a plurality of first protrusions 13 and a plurality of second protrusions 14 , the first protrusions 13 are spaced along the first direction A, and the second protrusions 14 are spaced along the first direction A , the battery pack 100 includes a plurality of first support members 30, each support member 30 is correspondingly disposed between a first convex portion 13 and a second convex portion 14, or a plurality of support members 30 are disposed correspondingly to a first convex portion 13 and the second convex portion 14 , for example, two support members 30 are correspondingly provided between a first convex portion 13 and a second convex portion 14 .
  • the battery pack 100 includes a first protruding portion 13 and a second protruding portion 14 disposed on the second side wall 12a.
  • the first convex portion 13 and the second convex portion 14 are disposed from the second side wall 12a toward the first side wall 11a.
  • the first convex portion 13 is perpendicular to the second side wall 12a
  • the second convex portion 14 is perpendicular to the second side wall 12a.
  • the first protruding portion 13 , the second protruding portion 14 and the second side wall 12a are integrally formed, for example, integrally formed by an injection molding process; for example, an aluminum extrusion process.
  • the first protruding portion 13 is detachably connected to the second side wall 12a, such as through bolts.
  • the second protruding portion 14 is detachably connected to the second side wall 12a, such as through bolts.
  • both the first side wall 11 a and the second side wall 12 a are provided with a first convex portion 13 and a second convex portion 14 .
  • the first convex portion 13 disposed on the first side wall 11a and the first convex portion 13 disposed on the second side wall 12a are oppositely disposed, specifically, along the third direction C, the first convex portion 13 disposed on the first
  • the orthographic projections of the first convex portion 13 of the side wall 11a and the first convex portion 13 provided on the second side wall 12a overlap.
  • the second convex portion 14 provided on the first side wall 11a is opposite to the second convex portion 14 provided on the second side wall 12a, specifically, along the third direction C, the second convex portion 14 provided on the first side wall 11a
  • the convex portion 14 and the orthographic projection of the second convex portion 14 provided on the second side wall 12a overlap.
  • the oppositely disposed first convex portion 13 and the second convex portion 14 are beneficial to better restrict the movement of the battery cell 20 , and further, are beneficial to pass the impact force through the first convex portion 13 and the second convex portion 14 more uniformly Conducted to the first sidewall 11a and the second sidewall 12a to further protect the cell 20 .
  • first protruding portion 13 and the second protruding portion 14 are structures capable of abutting against the first supporting portion 31 and the second supporting portion 32 , such as a sheet-like plate structure or the like.
  • the casing 10 is provided with a first end plate 15 and a second end plate 16 opposite to each other along the first direction A, and the first cover plate 11 , the second cover plate 12 , the first end plate 15 and the second end plate 16 are jointly formed to surround
  • the accommodating space (not shown in the figure), the battery cells 20 are arranged in the accommodating space.
  • the first end plate 15 is provided with a first opening 151
  • the second end plate 16 is provided with a second opening 161, so as to form a communication channel inside the housing 10 through the first opening 151 and the second opening 161 , so as to facilitate the heat dissipation of the plurality of battery cells 20 in the housing 10 .
  • the cell 20 includes an encapsulation shell 21 , an electrode assembly (not shown) accommodated in the encapsulation shell 21 , and a first tab 23 connected to the electrode assembly and extending out of the encapsulation shell 21 .
  • the first tab 23 extends out of the package shell 21 from one end of the electrode assembly.
  • the first tab 23 includes a first welding portion 231 and a first extending portion 232 disposed outside the package shell 21 , and the first welding portion 231 is used for connecting with adjacent tabs or conductive members.
  • the first welding part 231 and the first supporting part 31 are located on opposite sides of the first convex part 13, so that a gap is formed between the first welding part 231 and the first supporting part 31, so that the electrical The heat generated by the core 20 is discharged from the gap, which is beneficial to the heat dissipation of the battery core 20 .
  • the first extension portion 232 is provided between the first welding portion 231 and the second portion 212.
  • the first extension portion 232 is at least partially located in the through groove 312, that is, viewed along the first direction A
  • the second part 212 can protrude from the through groove 312 so that the first extension part 232 is all located in the through groove 312 , and the second part 212 can also be blocked by the third support part 33 so that the first extension part 232 connected to the second part 212 Part of it is located in the through slot 312 , which is beneficial for the heat generated by the battery cell 20 to be discharged through the through slot 312 through the first extension portion 232 .
  • the battery cell 20 further includes a second tab 24 .
  • the first tab 23 and the second tab 24 protrude from the package shell 21 from opposite ends of the electrode assembly, respectively.
  • the second tab 24 includes a second welding portion 241 and a second extending portion 242 disposed outside the package shell 21 , and the second welding portion 241 is used for connecting with adjacent tabs or conductive members.
  • the second welding portion 241 and the second supporting portion 32 are located on opposite sides of the second convex portion 14, so that a space is formed between the second welding portion 241 and the second supporting portion 32, so that the electrical The heat generated by the core 20 is discharged from the space to facilitate the heat dissipation of the battery core 20 .
  • the second extension portion 242 is disposed between the second welding portion 241 and the second portion 212.
  • the second extension portion 242 is at least partially located in the through groove 312, that is, viewed along the first direction A,
  • the second part 212 can protrude from the through groove 312 so that the second extension part 242 is all located in the through groove 312 , and the second part 212 can also be blocked by the third support part 33 so that the second extension part 242 connected to the second part 212 Part of it is located in the through slot 312 , which is beneficial for the heat generated by the battery cell 20 to be discharged through the through slot 312 through the second extending portion 242 .
  • the first tab 23 or the second tab 24 is bent at 90°.
  • the bending part of the first tab 23 or the second tab 24 is the above-mentioned first welding part 231 and the second welding part 241, so as to reduce the first tab 23 or the second tab 24 by bending Extending the length of the encapsulation case 21 can reduce the pulling of the tabs when the battery pack 100 shakes, causing the first welding part 231 or the second welding part 241 to be separated from the welding area.
  • the packaging case 21 includes a first part 211 and a second part 212 arranged in sequence, and the second part 212 is located at opposite ends of the first part 211 .
  • the first part 211 is a convex hull structure formed by the package shell 21 with a certain receiving space (not shown), so as to accommodate the electrode assembly in the receiving space.
  • the second part 212 is a flat structure formed by extending from the periphery of the first part 211 , and the second part 212 is used for sealing the cell 20 .
  • One end of the first tab 23 and the second tab 24 is connected to the electrode assembly, and the other end extends out of the packaging shell 21 from the second part 212 .
  • the first tab 23 and the second tab 24 are disposed at the same end of the cell 20 , and the first tab 23 and the second tab 24 extend from the same second portion 212 to the first portion 211.
  • both the first support portion 31 and the second support portion 32 include two support blocks 311 .
  • the two support blocks 311 are respectively disposed at opposite edges of the support member 30 , and the two support blocks 311 A through slot 312 is provided between the blocks 311 .
  • the through slot 312 is provided between the second parts 212 of two adjacent cells 20 , so that when the cells 20 generate heat, the heat in the cell 20 can be discharged from the second part 212 through the through slot 312 .
  • a part of the structure of the first extension portion 232 is located in the through groove 312 , which is beneficial to dissipate heat to the first extension portion 232 .
  • a part of the structure of the second extension portion 242 is located in the through groove 312 , which is beneficial to the heat dissipation of the second extension portion 242 .
  • the support member 30 further includes a third support portion 33 .
  • the first support portion 31 and the second support portion 32 are provided at opposite ends of the third support portion 33 .
  • the battery core 20 is provided on the side of the third support portion 33 facing the battery core 20 through an adhesive, such as double-sided tape or other adhesive materials.
  • the support member 30 is a flat plate structure, so as to support the battery cell 20 while supporting the first convex portion 13 and the second convex portion 14 , so as to fix the battery cell 20 and the housing 10 , it can be understood that
  • the type of the support member 30 is not limited thereto, for example, in another embodiment, the support member 30 may also be a mounting seat structure or the like.
  • the battery pack 100 further includes a buffer member 40 .
  • the buffer member 40 is disposed between the support member 30 and the cells 20 .
  • One side of the buffer member 40 is connected to the support member 30, and the opposite side is connected to the battery cell 20 disposed adjacent to the support member 30.
  • the buffer member 40 is bonded to the third support portion 33, and the buffer member 40 slows down the support. The impact force of the component 30 on the battery cell 20 is reduced, so as to reduce the probability of damage to the battery cell 20 .
  • the buffer member 40 can also be disposed between the two cells 20, and the opposite sides of the buffer member 40 are respectively connected to the two cells 20 to prevent the two cells 20 from shaking and colliding with each other .
  • the buffer member 40 and the battery core 20 are connected by an adhesive, such as double-sided tape.
  • the buffer member 40 includes, but is not limited to, foam.
  • the buffer member 40 has a buffer function.
  • the battery pack 100 further includes a first heat dissipation member 50 .
  • the first heat dissipation member 50 is disposed between the two battery cells 20 , and the first heat dissipation member 50 and the buffer member 40 are disposed at intervals, that is, the first heat dissipation member 50
  • the battery cell 20 is connected with the buffer member 40 , so that the heat generated by the battery cell 20 is discharged through the first heat dissipation member 50 .
  • the first heat dissipation member 50 may also be disposed between the battery cell 20 and the support member 30 .
  • the first heat dissipation member 50 includes, but is not limited to, a hollow aluminum sheet structure.
  • the battery pack 100 further includes a first circuit board 60 , and the first welding portion 231 is disposed on the first circuit board 60 . Viewed along the first direction A, the first circuit board 60 and the first support portion 31 are located on opposite sides of the first convex portion 13, so that a gap is formed between the first circuit board 60 and the cell 20 and the support member 30, so that for heat dissipation.
  • the first circuit board 60 is provided with a first through hole 61 , the first tab 23 extends out of the first through hole 61 , and the first soldering portion 231 is soldered to a copper plate (not shown) outside the first circuit board 60 .
  • the battery pack 100 further includes a second circuit board 70 , the first circuit board 60 and the second circuit board 70 are disposed on opposite ends of the battery cell 20 , and the second welding portion 241 is disposed on the second circuit on board 70.
  • the second circuit board 70 and the second support portion 32 are located on opposite sides of the second convex portion 14, so that a gap is formed between the second circuit board 70 and the cell 20 and the support member 30, so that for heat dissipation.
  • the second circuit board 70 is provided with a second through hole (not shown in the figure), the second tab 24 protrudes from the second through hole, and the second welding portion 241 is welded to the copper plate outside the second circuit board 70 (not shown in the figure). Show).
  • the battery pack 100 further includes a connecting member 80 .
  • the connecting member 80 includes a connecting plate 81 , a first connecting portion 82 and a second connecting portion 83 .
  • the first connecting portion 82 and the second connecting portion 83 are arranged at opposite ends of the connecting plate 81
  • the first circuit board 60 is arranged on the first connecting portion 82 and the second connecting portion 83 .
  • the first circuit board 60 is fixed in the housing 10 through the first connecting portion 82 and the second connecting portion 83 .
  • first connecting portion 82 defines a first groove 821 , and the first groove 821 can be sleeved on the first protruding portion 13 , so that the first connecting portion 82 is fixed relative to the first protruding portion 13 and the housing 10 .
  • the second connecting portion 83 defines a second groove 831 opposite to the first groove 821 , and the second groove 831 can be sleeved on the second convex portion 14 to cooperate with the first groove 821 to fix the connecting member 80 in the housing 10 .
  • the second connecting portion 83 also defines a third slot 832 .
  • the second slot 831 and the third slot 832 are arranged on opposite sides of the first circuit board 60 , that is, the first slot 821 and the second slot 831 are located on the first circuit board 60 . Inside, the third slot 832 is located outside the first circuit board 60 .
  • the battery pack 100 further includes a circuit board provided on the first circuit board 60 .
  • connection structure is at least partially disposed in the third groove 832, which is beneficial to limit the position of the connecting structure, facilitate assembly and fixation, and reduce the interference between the connecting structure and other structural components.
  • connection structure includes a wire harness.
  • connection structure includes a conductive copper sheet 110 .
  • the connecting member 80 further includes a fixing portion 84 .
  • the fixing portion 84 is disposed on the connecting board 81 and can be fixed on the first circuit board 60 .
  • the fixing portion 84 is extended out of the hole on the first circuit board 60 and fixed on the first circuit board 60 . In order to increase the stability of the first circuit board 60 being fixed between the first connecting portion 82 and the second connecting portion 83 .
  • connection structure includes a conductive copper sheet 110, the conductive copper sheet 110 is provided with openings, the fixing portion 84 passes through the holes on the first circuit board 60 and the openings on the conductive copper sheet 110, and connects the connecting member 80, the second A circuit board 60 is fixed to the conductive copper sheet 110 to save space.
  • the fixing portion 84 is a screw.
  • the fixing portion 84 passes through the hole on the first circuit board 60 and is fixed by a nut (not shown).
  • the nut fixes the first circuit board 60 between the first connection part 82 and the second connection part 83
  • the nut is rotated on the fixing part 84 so that the nut clamps the first circuit board 60 .
  • the torque generated during the rotation of the nut is transmitted to the connecting plate 81 , thereby reducing the interference to the first circuit board 60 caused by the torque generated when the nut is rotated.
  • the type of the fixing portion 84 is not limited to this, and any structure that can be fixed to the connection board 81 and can fix the first circuit board 60 between the first connection portion 82 and the second connection portion 83 is acceptable.
  • the battery pack 100 further includes a panel 90 and a second heat sink 91 disposed on the panel 90 .
  • the panel 90 is disposed along the first direction A at one end of the casing 10 with the first end plate 15
  • the second heat dissipation member 91 is disposed corresponding to the first opening 151 , so as to dissipate the heat generated by the battery cell 20 from the casing through the second heat dissipation member 91 .
  • the inside of the body 10 is sucked out through the first opening 151 .
  • the second heat dissipation member 91 includes, but is not limited to, the fan, and any structure that can absorb the heat generated by the battery cells 20 from the first opening 151 is acceptable.
  • an electrical device including a body (not shown) and a battery pack 100 accommodated in the body, where the battery pack 100 is the battery pack described in the previous embodiment Therefore, the electric device has all the beneficial effects of the battery pack 100, which will not be repeated here.
  • the electrical device may be an electric vehicle, an electric bus, an electric vehicle, etc.
  • the body is a vehicle body structure, and the battery packs 100 and 200 are arranged in the vehicle body to supply power.
  • the electrical device may also be an energy storage device, an electric bicycle, a flying device, a hand-held electric device, such as a vacuum cleaner, a lawn mower and other devices.

Abstract

一种电池组，包括壳体、多个设于所述壳体内的电芯和支撑件，多个所述电芯沿第一方向层叠设置，所述支撑件设于两个所述电芯之间，所述支撑件包括相对设置的第一支撑部和第二支撑部；沿第二方向，所述壳体包括第一凸部和第二凸部，所述支撑件设于所述第一凸部和所述第二凸部之间，且所述第一支撑部连接于第一凸部，所述第二支撑部连接于所述第二凸部，所述第二方向为所述壳体的宽度方向。还涉及一种用电装置。上述支撑件结构简单，并在电池的组装过程中减少其他元件即可将电芯固定于壳体内，从而降低了电池组的组装难度。

Description

电池组及用电装置 技术领域
本申请涉及锂电池技术领域，尤其涉及一种电池组及用电装置。
背景技术
在电池的组装过程中，常通过支架将电芯固定于壳体内。而现有用于固定电芯的支架结构复杂且组成元件过多，从而增加了电池的组装难度。且在通过支架将电芯固定于壳体内时，会使电芯与壳体贴合，不利于组装和电芯的散热。
发明内容
有鉴于此，有必要提供一种组装方便且便于散热的电池模板，以解决上述问题。
本申请的实施例提供一种电池组，包括壳体、多个设于所述壳体内的电芯和支撑件，多个所述电芯沿第一方向层叠设置，所述支撑件设于两个所述电芯之间，所述支撑件包括相对设置的第一支撑部和第二支撑部；沿第二方向，所述壳体包括第一凸部和第二凸部，所述支撑件设于所述第一凸部和所述第二凸部之间，且所述第一支撑部连接于第一凸部，所述第二支撑部连接于所述第二凸部，所述第二方向垂直于第一方向。
上述方案通过将支撑件设于两个电芯之间，并将第一支撑部连接于第一凸部，将第二支撑部连接于第二凸部，以使支撑件连接两个电芯并将两个电芯固定于壳体内，且支撑件结构简单，并在电池的组装过程中无需配合其他元件即可将电芯固定于壳体内，从而降低了电池的组装难度。
一种可能实现的方式中，所述第一支撑部包括至少两个支撑块，沿第三方向，两个所述支撑块分别设于所述支撑件相对两侧，两个所述支撑块之间设有通槽，所述第三方向同时垂直所述第一方向和所述第二方向。
上述方案通过在两个支撑块之间形成通槽，以使电芯产生的热量通过通槽排出，以便于电芯散热。
一种可能实现的方式中，所述电池组还包括缓冲件，所述缓冲件一侧连接于所述支撑件，相对的另一侧连接于和所述支撑件相邻设置的电芯。
上述方案通过在支撑件和电芯之间设置缓冲件，以在电芯晃动时，缓冲件能缓解电芯与支撑件的冲击力，从而防止电芯在晃动时损坏。
一种可能实现的方式中，所述电芯包括封装壳、收容于所述封装壳内的电极组件和连接于所述电极组件并延伸出所述封装壳的第一极耳，所述第一极耳包括设于所述封装壳外的第一焊接部，沿第一方向观察，所述第一焊接 部和所述第一支撑部位于所述第一凸部相对的两侧。
上述方案通过将第一焊接部和第一支撑部设于第一凸部相对的两侧，以使第一焊接部与第一支撑部之间形成空间，从而使电芯产生的热量从空间处排出，进一步的便于电芯的散热。
一种可能实现的方式中，所述封装壳包括依次设置的第一部分和第二部分，所述第一部分用于收容所述电极组件，所述第一极耳自所述第二部分延伸出所述封装壳，所述支撑部设有通槽，所述通槽设于两相邻的所述电芯的第二部分之间。上述方案通过将通槽设于两相邻的电芯的第二部分之间，以使电芯产生的热量从第二部分经通槽排出，从而进一步便于电芯的散热。
一种可能实现的方式中，所述第一极耳还包括设于所述封装壳外的第一延伸部，所述第一延伸部设于所述第一焊接部和所述第二部分之间，沿第一方向观察，所述第一延伸部至少部分位于所述通槽。
上述方案通过使第一延伸部至少部分位于通槽内，以使第一延伸部与通槽连通，有利于电芯产生的热量从第一延伸部经通槽排出。
一种可能实现的方式中，所述电池组还包括第一电路板，所述第一焊接部设于所述第一电路板上，沿所述第一方向观察，所述第一电路板和所述第一支撑部位于所述第一凸部相对的两侧。
上述方案通过使第一电路板和第一支撑部位于第一凸部相对的两侧，以使第一电路板在安装时，与电芯及支撑件分离，有利于电芯的散热，并在电芯晃动时，减少电芯与第一电路板的碰撞，从而降低电芯和第一电路板在晃动时损坏的几率。
一种可能实现的方式中，所述电池组还包括连接件，所述连接件包括连接板、第一连接部和第二连接部，所述第一连接部和所述第二连接部设于所述连接板相对的两端，所述第一电路板设于所述第一连接部和所述第二连接部之间。
上述方案通过将第一电路板设于第一连接部和第二连接部之间，以便于将第一电路板的安装。
一种可能实现的方式中，所述连接件还包括固定部，所述固定部设于所述连接板上，所述固定部用于将所述第一电路板和所述连接件固定。
上述方案通过连接板上设置固定部，并使固定部固定于第一电路板上，以在将第一电路板放置于第一连接部和第二连接部之间时，便于第一电路板的固定，并在固定部上套设螺帽以锁紧第一电路板和连接件时，使旋转螺帽的扭矩传递至连接板上，从而避免第一电路板受力以降低第一电路板损坏的几率。
一种可能实现的方式中，所述第一连接部开设有第一槽，所述第一槽设于所述第一凸部上。
上述方案通过在第一连接部上开设第一槽，并通过将第一槽套设于第一凸部上以便于将连接件固定于壳体内。
一种可能实现的方式中，所述第二连接部开设有第二槽和第三槽，所述第二槽和所述第三槽设于所述第一电路板相对的两侧，所述第二槽设于第二凸部，所述第三槽用于收容设于所述第一电路板上的连接结构。
上述方案通过将第二槽和第三槽设于第一电路板相对的两侧，以在第二槽配合第一槽而将连接件固定于壳体内时，第三槽位于与第一槽或第二槽相对第一电路板不同的两侧，从而便于线束的安装，并在线束过多时，防止多条线束相互干扰。
一种可能实现的方式中，所述壳体沿第三方向相对设置有第一侧壁和第二侧壁，所述第一凸部和所述第二凸部设于所述第一侧壁，所述第三方向垂直于所述第一方向和所述第二方向。
上述方案通过在壳体上设置能与第一支撑部和第二支撑部配合的第一凸部和第二凸部，以便于将支撑件固定于壳体内。
一种用电装置，包括本体和收容于本体的上述电池组。
本申请的电池组包括壳体、多个设于所述壳体内的电芯和支撑件，上述方案通过将支撑件设于两个电芯之间，并将第一支撑部连接于第一凸部，将第二支撑部连接于第二凸部，以使支撑件连接两个电芯并将两个电芯固定于壳体内，支撑件结构简单，减少在电池的组装过程中其他元件，从而降低了电池的组装难度。进一步，电芯和壳体之间有更多的间隙，有利于散热。
附图说明
图1为一实施例中电池组的分解图。
图2为图1所示的壳体的立体结构示意图。
图3为图2所示的电池组的侧视图。
图4为图1所示的电芯、支撑件、第一电路板、第二电路板及连接件的立体结构示意图。
图5为图4所示的电芯的部分结构立体结构示意图。
图6为图4所示的电芯、支撑件、第一电路板、第二电路板及连接件的剖视图。
图7为图1所示的支撑件的立体结构示意图。
图8为图2所示的第一电路板与连接件的立体结构示意图。
图9为图8所示的连接件的立体结构示意图。
主要元件符号说明
电池组                           100
壳体                             10
第一盖板                         11
第一侧壁                         11a
第一固定部                        111
第二固定部                        112
第二盖板                          12
第二侧壁                          12a
第三固定部                        121
第四固定部                        122
第一凸部                          13
第二凸部                          14
第一端板                          15
第一开口                          151
第二端板                          16
第二开口                          161
电芯                              20
封装壳                            21
第一部分                          211
第二部分                          212
第一极耳                          23
第一焊接部                        231
第一延伸部                        232
第二极耳                          24
第二焊接部                        241
第二延伸部                        242
支撑件                            30
第一支撑部                        31
支撑块                            311
通槽                              312
第二支撑部                        32
第三支撑部                        33
缓冲件                            40
第一散热件                        50
第一电路板                        60
第一通孔                          61
第二电路板                        70
连接件                            80
连接板                            81
第一连接部                        82
第一槽                            821
第二连接部                        83
第二槽                            831
第三槽                            832
固定部                            84
面板                              90
第二散热件                        91
导电铜片                          110
第一方向                          A
第二方向                          B
第三方向                          C
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。
需要说明的是，当一个组件被认为是“连接”另一个组件，它可以是直接连接到另一个组件或者可能同时存在居中组件。当一个组件被认为是“设于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。本文所使用的术语“顶”、“底”、“上”、“下”、“左”、“右”、“前”、“后”、以及类似的表述只是为了说明的目的。
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。
本申请的实施例提供一种电池组，包括壳体、多个设于所述壳体内的电芯和支撑件，多个所述电芯沿第一方向层叠设置，所述第一方向为所述壳体的长度方向，沿第一方向，所述支撑件设于两个所述电芯之间，所述支撑件包括相对设置的第一支撑部和第二支撑部；沿第二方向，所述壳体包括第一凸部和第二凸部，所述支撑件设于所述第一凸部和所述第二凸部之间，且所述第一支撑部连接于第一凸部，所述第二支撑部连接于所述第二凸部，所述第二方向为所述壳体的宽度方向。
上述提供的电池组通过将支撑件设于两个电芯之间，并将第一支撑部连接于第一凸部，将第二支撑部连接于第二凸部，以使支撑件连接两个电芯并将两个电芯固定于壳体内，且支撑件结构简单，并在电池的组装过程中无需配合其他元件即可将电芯固定于壳体内，从而降低了电池的组装难度。
下面结合附图，对本申请的一些实施例作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。
请参阅图1，本申请的实施例提供一种电池组100，包括壳体10、多个设于壳体10内的电芯20和支撑件30。多个电芯20沿第一方向A层叠设置，沿第一方向A，支撑件30设于两个电芯20之间，支撑件30包括相对设置的 第一支撑部31和第二支撑部32。沿第二方向B，壳体10包括第一凸部13和第二凸部14，支撑件30设于第一凸部13和第二凸部14之间，且第一支撑部31连接于第一凸部13，第二支撑部32连接于第二凸部14，优选的，第二方向B垂直于第一方向A。
请结合图1、图2和图3，壳体10包括可拆卸连接的第一盖板11和第二盖板12。优选的，第一盖板11设置有第一固定部111和第二固定部112，第二盖板12设置有第三固定部121和第四固定部122，第一固定部111可与第三固定部121固定，第二固定部112可与第四固定部122固定，以便于将第一盖板11和第二盖板12固定或分离，从而便于将多个层叠的电芯20设于第一盖板11和第二盖板12之间。
在一实施例中，第一固定部111、第二固定部112、第三固定部121和第四固定部122为可相互固定连接的结构，如卡勾结构等。
进一步地，第一盖板11包括第一侧壁11a，第二盖板12包括第二侧壁12a，沿第三方向C，第一侧壁11a第二侧壁12a设于电芯20的相对两侧。优选的，第三方向C同时垂直于第一方向A和第二方向B。
在一实施例中，第一凸部13和第二凸部14设于第一侧壁11a。优选的，第一凸部13和第二凸部14自第一侧壁11a朝向第二侧壁12a设置。优选的，第一凸部13垂直于第一侧壁11a，第二凸部14垂直于第一侧壁11a。优选的，第一凸部13、第二凸部14和第一侧壁11a为一体成型结构，比如，通过注塑成型工艺的一体成型；比如，铝材挤压工艺等。优选的，第一凸部13可拆卸的连接于第一侧壁11a，比如通过螺栓固定。优选的，第二凸部14可拆卸的连接于第一侧壁11a，比如通过螺栓固定。第一支撑部31和第二支撑部32沿第二方向B能抵持于第一凸部13和第二凸部14，限制电芯20沿沿第二方向B的移动。优选的，在一些实施例中，电芯20受到外部其他力的冲击时，第一支撑部31和第二支撑部32有利于将冲击力通过第一凸部13和第二凸部14传导到第一侧壁11a，进步一保护电芯20。
在一实施例中，第一凸部13沿第一方向A连续设置，第二凸部14沿第一方向A连续设置，电池组100包括多个第一支撑件30，多个第一支撑部31和第二支撑部32设于第一凸部13和第二凸部14之间，有利于进一步的限制电芯20沿第二方向B的移动。优选的，多个第一支撑部31和第二支撑部32设于第一凸部13和第二凸部14之间，有利于件将冲击力通过第一凸部13和第二凸部14进一步传导到第一侧壁，更好的保护电芯20。在其他实施中，电池组100包括多个第一凸部13和多个第二凸部14，第一凸部13沿第一方向A间隔设置，第二凸部14沿第一方向A间隔设置，电池组100包括多个第一支撑件30，每个支撑件30对应设于一个第一凸部13和第二凸部14之间，或多个支撑件30对应设于一个第一凸部13和第二凸部14之间，比如两个支撑件30对应设于一个第一凸部13和第二凸部14之间。
在一实施例中，电池组100包括设于第二侧壁12a的第一凸部13和第二 凸部14。优选的，第一凸部13和第二凸部14自第二侧壁12a朝向第一侧壁11a设置。优选的，第一凸部13垂直于第二侧壁12a，第二凸部14垂直于第二侧壁12a。优选的，第一凸部13、第二凸部14和第二侧壁12a为一体成型结构，比如，通过注塑成型工艺的一体成型；比如，铝材挤压工艺等。优选的，第一凸部13可拆卸的连接于第二侧壁12a，比如通过螺栓固定。优选的，第二凸部14可拆卸的连接于第二侧壁12a，比如通过螺栓固定。
在一实施例中，第一侧壁11a和第二侧壁12a均设有第一凸部13和第二凸部14。沿第三方向C，设于第一侧壁11a的第一凸部13和设于第二侧壁12a的第一凸部13相对设置的，具体的，沿第三方向C，设于第一侧壁11a的第一凸部13和设于第二侧壁12a的第一凸部13的正投影重叠。设于第一侧壁11a的第二凸部14和设于第二侧壁12a的第二凸部14相对设置的，具体的，沿第三方向C，设于第一侧壁11a的第二凸部14和设于第二侧壁12a的第二凸部14的正投影重叠。相对设置的第一凸部13和第二凸部14有利于更好的限制的电芯20的移动，进一步的，有利于将冲击力更均匀的通过第一凸部13和第二凸部14传导到第一侧壁11a和第二侧壁12a，进步一保护电芯20。
在一实施例中，第一凸部13和第二凸部14为可抵持第一支撑部31和第二支撑部32的结构，如片状板结构等。
壳体10沿第一方向A相对设置有第一端板15和第二端板16，第一盖板11、第二盖板12、第一端板15和第二端板16共同围设形成收容空间(图未示)，电芯20设于收容空间。优选的，第一端板15上开设有第一开口151，第二端板16上开设有第二开口161，以通过第一开口151和第二开口161在壳体10内部形成一连通的通道，从而便于壳体10内多个电芯20的散热。
请参阅图4和图5，电芯20包括封装壳21、收容于封装壳21内的电极组件(图未示)和连接于电极组件并延伸出封装壳21的第一极耳23。
请结合图4、图5和图6，在一实施例中，第一极耳23自电极组件一端延伸出封装壳21。优选的，第一极耳23包括设于封装壳21外的第一焊接部231和第一延伸部232，第一焊接部231用于和相邻的极耳或导电件连接。沿第一方向A观察，第一焊接部231和第一支撑部31位于第一凸部13相对的两侧，以使第一焊接部231与第一支撑部31之间形成间隙，从而使电芯20产生的热量从间隙处排出，有利于电芯20的散热。
第一延伸部232设于第一焊接部231和第二部分212之间，优选的，沿第一方向A观察，第一延伸部232至少部分位于通槽312，即沿第一方向A观察，第二部分212可伸出自通槽312以使第一延伸部232全部位于通槽312，第二部分212也可被第三支撑部33遮挡而使连接于第二部分212的第一延伸部232部分位于通槽312，有利于使电芯20产生的热量通过第一延伸部232经通槽312排出。
在另一实施例中，电芯20还包括第二极耳24。第一极耳23和第二极耳 24分别自电极组件相对的两端伸出封装壳21。优选的，第二极耳24包括设于封装壳21外的第二焊接部241和第二延伸部242，第二焊接部241用于和相邻的极耳或导电件连接。沿第一方向A观察，第二焊接部241和第二支撑部32位于第二凸部14相对的两侧，以使第二焊接部241与第二支撑部32之间形成空间，从而使电芯20产生的热量从空间处排出，以便于电芯20的散热。
第二延伸部242设于第二焊接部241和第二部分212之间，优选的，沿第一方向A观察，第二延伸部242至少部分位于通槽312，即沿第一方向A观察，第二部分212可伸出自通槽312以使第二延伸部242全部位于通槽312，第二部分212也可被第三支撑部33遮挡而使连接于第二部分212的第二延伸部242部分位于通槽312，有利于使电芯20产生的热量通过第二延伸部242经通槽312排出。
在一实施例中，第一极耳23或第二极耳24成90°折弯。优选的，第一极耳23或第二极耳24折弯的部位为上述第一焊接部231和第二焊接部241，以通过折弯的方式减少第一极耳23或第二极耳24伸出封装壳21的长度，减少电池组100在晃动时拉扯极耳而导致第一焊接部231或第二焊接部241脱离焊接区。
进一步地，封装壳21包括依次设置的第一部分211和第二部分212，第二部分212位于第一部分211的相对两端。优选的，第一部分211为封装壳21形成的具有一定收纳空间(图未示)的凸包结构，以将电极组件收容于收纳空间内。第二部分212自第一部分211周边延伸形成的扁平结构，第二部分212用于密封电芯20。第一极耳23、第二极耳24一端连接于电极组件，另一端从第二部分212延伸出封装壳21。在其他的实施例中，第一极耳23和第二极耳24设置于电芯20的同一端，第一极耳23和第二极耳24自同一个第二部分212延伸出第第一部分211。
请参阅图7，第一支撑部31和第二支撑部32均包括两个支撑块311，沿第三方向C，两个支撑块311分别设于支撑件30相对的边缘部位，且两个支撑块311之间设有通槽312。优选的，通槽312设于两个相邻的电芯20的第二部分212之间，以在电芯20产热时，电芯20内的热量能从第二部分212经通槽312排出。优选的，沿第一方向观察，第一延伸部232部分结构位于通槽312内，有利于对第一延伸部232散热。优选的，沿第一方向观察，第二延伸部242部分结构位于通槽312内，有利于对第二延伸部242散热。
支撑件30还包括第三支撑部33，第一支撑部31和第二支撑部32设于第三支撑部33相对的两端。优选的，电芯20上通过粘接剂设于第三支撑部33朝向电芯20的侧面比如有双面胶或其他胶合材料。
在一实施例中，支撑件30为平板结构，以在支撑电芯20的同时抵持于第一凸部13和第二凸部14上，从而将电芯20与壳体10固定，可以理解的是，支撑件30的类型并不限于此，如在另一实施例中，支撑件30还可为安 装座结构等。
请再次参阅图6，电池组100还包括缓冲件40，在一实施例中，缓冲件40设于支撑件30和电芯20之间。缓冲件40一侧连接于支撑件30，相对的另一侧连接于和支撑件30相邻设置的电芯20，优选的，缓冲件40粘接于第三支撑部33，缓冲件40减缓支撑件30对电芯20的冲击力，以降低电芯20损坏的几率。
在另一实施例中，缓冲件40还可设置于两个电芯20之间，且缓冲件40相对的两侧分别与两个电芯20连接，以防止两个电芯20晃动而相互碰撞。优选的，缓冲件40和所述电芯20通过粘接剂连接，比如双面胶。
在一实施例中，缓冲件40包括但不限于泡棉，优选的，缓冲件40具有缓冲功能。
电池组100还包括第一散热件50，在一实施例中，第一散热件50设于两个电芯20之间，第一散热件50和缓冲件40间隔设置，即第一散热件50和缓冲件40之间连接有电芯20，以使电芯20产生的热量经第一散热件50排出。
可以理解的是，在另一实施例中，第一散热件50还可设于电芯20与支撑件30之间。
在一实施例中，第一散热件50包括但不限于中空的铝片结构。请结合图3和图6，在一实施例中，电池组100还包括第一电路板60，第一焊接部231设于第一电路板60上。沿第一方向A观察，第一电路板60和第一支撑部31位于第一凸部13相对的两侧，以使第一电路板60与电芯20和支撑件30之间形成间隙，以便于散热。
进一步的，第一电路板60设有第一通孔61，第一极耳23伸出第一通孔61，第一焊接部231焊接于第一电路板60外侧的铜板(图未示)。
在另一实施例中，电池组100还包括第二电路板70，第一电路板60和第二电路板70设于电芯20的相对两端，且第二焊接部241设于第二电路板70上。沿第一方向A观察，第二电路板70和第二支撑部32位于第二凸部14相对的两侧，以使第二电路板70与电芯20和支撑件30之间形成间隙，以便于散热。
进一步的，第二电路板70设有第二通孔(图未示)，第二极耳24伸出第二通孔，第二焊接部241焊接于第二电路板70外侧的铜板(图未示)。
请参阅图8和图9，电池组100还包括连接件80。连接件80包括连接板81、第一连接部82和第二连接部83，第一连接部82和第二连接部83设于连接板81相对的两端，第一电路板60设于第一连接部82和第二连接部83之间，以通过第一连接部82和第二连接部83将第一电路板60固定于壳体10内。
进一步地，第一连接部82开设有第一槽821，第一槽821可套设于第一凸部13上，以使第一连接部82相对第一凸部13和壳体10固定。
更进一步地，第二连接部83开设有与第一槽821相对设置的第二槽831，第二槽831可套设于第二凸部14上，以配合第一槽821将连接件80固定于壳体10内。
第二连接部83还开设有第三槽832，第二槽831和第三槽832设于第一电路板60相对的两侧，即第一槽821和第二槽831位于第一电路板60内侧，第三槽832位于第一电路板60外侧。以在第一槽821和第二槽831将第一电路板60固定于壳体10内时，第三槽832伸出第一电路板60，电池组100还包括设于第一电路板60的连接结构，连接结构至少部分设于第三槽832，有利于对连接结构限位，有利于组装固定，减少连接结构和其他结构件的干涉。优选的，连接结构包括线束。优选的，连接结构包括导电铜片110。
连接件80还包括固定部84，固定部84设于连接板81上，并可固定于第一电路板60上。在将第一电路板60固定于第一连接部82和第二连接部83之间时，通过将固定部84伸出第一电路板60上的孔位并固定于第一电路板60上，以增加第一电路板60固定于第一连接部82和第二连接部83之间的稳固性。优选的，连接结构包括导电铜片110，导电铜片110设有开孔，固定部84穿过第一电路板60上的孔位和导电铜片110上的开孔，将连接件80、第一电路板60和导电铜片110固定，节省空间。
在一实施例中，固定部84为螺杆。固定部84穿过第一电路板60上的孔位，并通过螺帽(图未示)固定。在螺帽将第一电路板60固定于第一连接部82和第二连接部83之间时，在固定部84上旋转螺帽，从而使得螺帽将第一电路板60夹紧。螺帽在旋转过程中产生的扭矩传递至连接板81上，从而减轻转动螺帽时产生的扭矩对第一电路板60的干扰。可以理解的是，固定部84的类型并不限于此，凡可固定于连接板81并能将第一电路板60固定于第一连接部82和第二连接部83之间的结构均可。
请再次参阅图1，电池组100还包括面板90和设于面板90上的第二散热件91。面板90沿第一方向A设于壳体10具有第一端板15的一端，第二散热件91与第一开口151对应设置，以通过第二散热件91将电芯20产生的热量从壳体10内经第一开口151吸出。
在一实施例中，第二散热件91包括但不限于此风扇，凡可将电芯20产生的热量从第一开口151内吸出的结构均可。
本申请的另一实施例还提供一种用电装置(图未示)，包括本体(图未示)和收容于本体的电池组100，电池组100为上一实施例中所述的电池组100，因此，用电装置具有该电池组100的一切有益效果，在此，不再进行赘述。进一步的，所述用电装置可为电动车、电动公交车、电动汽车等，相应的，所述本体为车体结构，所述电池组100组200设于所述车体内，以进行供电。可以理解的是，在其他实施例中，所述用电装置还可是储能设备、电动自行车、飞行设备、手持电动装置，如吸尘器、除草机等其他装置。
另外，本技术领域的普通技术人员应当认识到，以上的实施例仅是用来 说明本申请，而并非用作为对本申请的限定，只要在本申请的实质精神范围之内，对以上实施例所作的适当改变和变化都落在本申请公开的范围之内。

Claims (13)

  1. 一种电池组，包括壳体和多个设于所述壳体内的电芯，多个所述电芯沿第一方向层叠设置，其特征在于，所述电池组还包括：
    支撑件，所述支撑件设于两个所述电芯之间，所述支撑件包括相对设置的第一支撑部和第二支撑部；
    沿第二方向，所述壳体包括第一凸部和第二凸部，所述支撑件设于所述第一凸部和所述第二凸部之间，所述第一支撑部连接于第一凸部，所述第二支撑部连接于所述第二凸部，所述第二方向垂直于所述第一方向。
  2. 如权利要求1所述的电池组，其特征在于，所述第一支撑部包括至少两个支撑块，沿第三方向，两个所述支撑块分别设于所述支撑件相对两侧，两个所述支撑块之间设有通槽，所述第三方向同时垂直所述第一方向和所述第二方向。
  3. 如权利要求1所述的电池组，其特征在于，所述电池组还包括缓冲件，所述缓冲件一侧连接于所述支撑件，相对的另一侧连接于和所述支撑件相邻设置的电芯。
  4. 如权利要求1所述的电池组，其特征在于，所述电芯包括封装壳、收容于所述封装壳内的电极组件和连接于所述电极组件并延伸出所述封装壳的第一极耳，所述第一极耳包括设于所述封装壳外的第一焊接部，沿第一方向观察，所述第一焊接部和所述第一支撑部位于所述第一凸部相对的两侧。
  5. 如权利要求4所述的电池组，其特征在于，所述封装壳包括依次设置的第一部分和第二部分，所述第一部分用于收容所述电极组件，所述第一极耳自所述第二部分延伸出所述封装壳，所述支撑件设有通槽，所述通槽设于两相邻的所述电芯的第二部分之间。
  6. 如权利要求5所述的电池组，其特征在于，所述第一极耳还包括设于所述封装壳外的第一延伸部，所述第一延伸部设于所述第一焊接部和所述第二部分之间，沿第一方向观察，所述第一延伸部至少部分位于所述通槽。
  7. 如权利要求4所述的电池组，其特征在于，所述电池组还包括第一电路板，所述第一焊接部设于所述第一电路板上，沿所述第一方向观察，所述第一电路板和所述第一支撑部位于所述第一凸部相对的两侧。
  8. 如权利要求7所述的电池组，其特征在于，所述电池组还包括连接件；
    所述连接件包括连接板、第一连接部和第二连接部，所述第一连接部和所述第二连接部设于所述连接板相对的两端，所述第一电路板设于所述第一连接部和所述第二连接部之间。
  9. 如权利要求8所述的电池组，其特征在于，所述连接件还包括固定部，所述固定部设于所述连接板上，所述固定部用于将所述第一电路板和所述连接件固定。
  10. 如权利要求8所述的电池组，其特征在于，所述第一连接部设有第一槽，所述第一槽设于所述第一凸部上。
  11. 如权利要求10所述的电池组，其特征在于，所述第二连接部开设有第二槽和第三槽，所述第二槽和所述第三槽设于所述第一电路板相对的两侧，所述第二槽设于第二凸部，所述第三槽用于收容设于所述第一电路板上的连接结构。
  12. 如权利要求1所述的电池组，其特征在于，所述壳体沿第三方向相对设置有第一侧壁和第二侧壁，所述第一凸部和所述第二凸部设于所述第一侧壁，所述第三方向垂直于所述第一方向和所述第二方向。
  13. 一种用电装置，其特征在于，包括本体和收容于所述本体的电池组，所述电池组为权利要求1至12中任一所述的电池组。
PCT/CN2021/084342 2021-03-31 2021-03-31 电池组及用电装置 WO2022205047A1 (zh)

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CN210956747U (zh) * 2019-08-26 2020-07-07 博科能源系统(深圳)有限公司 电池组
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