WO2023071837A1 - 电池和用电设备 - Google Patents

电池和用电设备 Download PDF

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Publication number
WO2023071837A1
WO2023071837A1 PCT/CN2022/125493 CN2022125493W WO2023071837A1 WO 2023071837 A1 WO2023071837 A1 WO 2023071837A1 CN 2022125493 W CN2022125493 W CN 2022125493W WO 2023071837 A1 WO2023071837 A1 WO 2023071837A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
present application
battery cells
battery cell
blocking
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2022/125493
Other languages
English (en)
French (fr)
Inventor
余来娟
陈兴地
张宁
吴岸为
徐冶
陈仁煜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
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 Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to EP22885715.7A priority Critical patent/EP4354623A4/en
Publication of WO2023071837A1 publication Critical patent/WO2023071837A1/zh
Priority to US18/518,141 priority patent/US20240097267A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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
    • H01M50/20—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
    • H01M50/289—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
    • H01M50/293—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 the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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, in particular to a battery and electrical equipment.
  • the application provides a battery and an electric device
  • the first aspect of the present application provides a battery, including: at least 4 battery cells, wherein at least two battery cells are arranged in battery rows along the length direction of the battery cells, and at least two battery cells are arranged along the length direction of the battery cells
  • the width direction is arranged in battery rows; the blocking member is placed in the first gap formed by two adjacent battery rows, and the blocking member is used to block the adhesive on the bottom surface of the battery cell from the end cap of the battery cell direction spread.
  • the blocking member includes: a blocking portion, which is arranged at one end of the blocking member close to the bottom surface of the battery cell, and the blocking portion is used to block the adhesive agent on the bottom surface of the battery cell from the end cap of the battery cell. Diffusion in the direction; the fixing part is arranged at the other end of the barrier, and the fixing part is used for connecting with the side of the battery cell in the length direction.
  • the blocking member is provided with a fixing portion to achieve a stable connection between the blocking member and the battery cells.
  • the blocking portion includes an extending portion, the extending portion is located in the second gap formed by two adjacent battery rows, and extends along the height direction of the battery cells in a direction away from the fixing portion.
  • the blocking part includes an extending part, and the extending part is located in the second gap formed by two adjacent battery rows, and extends along the width direction of the battery cells in a direction away from the fixing part.
  • the battery row includes n battery cells, and the blocking portion includes m extension portions, where 1 ⁇ m ⁇ n ⁇ 1. This proposal can improve the effect of the blocking member blocking the adhesive.
  • the battery row includes n battery cells.
  • the length of the battery cells is L1
  • the length of the barrier is L2; wherein, L1 ⁇ L2 ⁇ n*L1.
  • the width of the battery cell is W1
  • the width of the barrier is W2; wherein, 0.1* W1 ⁇ W2 ⁇ 0.15*W1.
  • the barrier is made of rubber. This solution can make the blocking member have the function of buffering the expansion tension between the battery cells.
  • the second aspect of the present application provides an electric device, including any battery provided in the first aspect of the present application, and the battery is used to provide electric energy.
  • the adhesive at the bottom of the battery cell will be blocked by the barrier when it is squeezed and diffuses from the gap formed by the chamfer of the case to the end cover, so as to prevent the adhesive from spreading and Spills onto the end caps to improve battery safety.
  • Fig. 1 is a structural schematic diagram of the connection between battery cells in a battery in the prior art
  • Fig. 2 is a schematic structural diagram of a vehicle provided by an embodiment of the present application.
  • Fig. 3 is a schematic structural diagram of a battery pack provided by an embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of a battery module provided by an embodiment of the application.
  • Fig. 5 is an exploded schematic diagram of a battery cell provided by an embodiment of the present application.
  • Fig. 6 is a schematic diagram of a partial explosion of a battery provided by an embodiment of the present application.
  • Fig. 7 is a schematic diagram of a partial structure of a battery provided by an embodiment of the present application.
  • Fig. 8 is a schematic diagram of a partial structure of a battery including a barrier provided by an embodiment of the present application.
  • Fig. 9 is a schematic structural view of a barrier including an extension provided by an embodiment of the present application.
  • Fig. 10 is a front view of a battery including the barrier shown in Fig. 9 provided by an embodiment of the present application;
  • Fig. 11 is a schematic structural diagram of another barrier including an extension provided by an embodiment of the present application.
  • Fig. 12 is a schematic top view of a battery including the barrier shown in Fig. 11 provided by an embodiment of the present application;
  • Fig. 13 is a schematic diagram of the length and width of a battery cell and a barrier provided by an embodiment of the present application.
  • connection In the description of the embodiments of this application, unless otherwise clearly specified and limited, the technical terms “installation”, “connection”, “connection”, “fixation” and other terms should be understood in a broad sense, for example, it can be a fixed connection, or It can be a detachable connection, or integrated; it can also be a mechanical connection, it can also be an electrical connection; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction of two components relation. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present application according to specific situations.
  • the first feature may be in direct contact with the first feature or the second feature "on” or “under” the second feature. Indirect contact through intermediaries.
  • “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • FIG. 1 is a structural schematic diagram of the connection between battery cells 21' in a battery 10' in the prior art. As shown in FIG.
  • every four adjacent battery cells 21' will have four shell chamfers 212R' to form a gap, resulting in
  • the adhesive applied on the bottom surface of the battery cell 21' will spread from the gap to the end cover 211' of the battery cell 21', and even overflow to the end cover 211 ' and solidify into blocks, and then in the process of cyclic expansion, the stress at the welding seam of the end cap 211' of the battery cell 21' cannot be released, causing the end cap 211' to crack and the battery cell 21' to leak , seriously affecting the safety performance of the battery 10'.
  • a barrier can be provided between two adjacent rows of battery cells along the length direction of the battery cells.
  • the adhesive at the bottom of the battery cell will be blocked by the stopper when it is squeezed and diffuses from the gap formed by the chamfer of the case to the end cover, so as to prevent the adhesive from overflowing On the end cap, improve the safety performance of the battery.
  • the present application provides a battery and an electric device using the battery.
  • the batteries provided in this application can be battery modules or battery packs, or primary batteries and secondary batteries, for example, secondary batteries include nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid (or lead storage) batteries, lithium-ion batteries, sodium Ion batteries, polymer batteries, etc.
  • the battery provided by this application is suitable for various electric devices that use batteries, such as mobile phones, portable devices, notebook computers, battery cars, electric toys, electric tools, electric vehicles, ships and spacecraft, etc.
  • spacecraft include aircraft, Rockets, space shuttles and spacecraft, etc.; batteries are used to provide electrical energy for the above-mentioned electrical equipment.
  • FIG. 2 is a schematic structural diagram of a vehicle 1 provided by some embodiments of the present application.
  • the vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle.
  • the interior of the vehicle 1 is provided with a battery 10 , and the battery 10 may be provided at the bottom, head or tail of the vehicle 1 .
  • the battery 10 can be used for power supply of the vehicle 1 , for example, the battery 10 can be used as an operating power source of the vehicle 1 .
  • the vehicle 1 may further include a controller 11 and a motor 12 , the controller 11 is used to control the battery 10 to supply power to the motor 12 , for example, for starting, navigating, and working power requirements of the vehicle 1 during driving.
  • the battery 10 can not only be used as an operating power source for the vehicle 1 , but can also be used as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .
  • the battery 10 may include a plurality of battery cells 21 , and the battery cells 21 refer to the smallest unit forming a battery module or a battery pack.
  • a plurality of battery cells 21 may be connected in series and/or in parallel via electrode terminals for various applications.
  • the batteries mentioned in this application include battery modules or battery packs.
  • a plurality of battery cells 21 may be connected in series, in parallel or in parallel, and in parallel refers to a mixture of series and parallel.
  • the battery 10 may also be called a battery pack.
  • a plurality of battery cells 21 may directly form a battery pack, or may first form a battery module 20, and then the battery module 20 forms a battery pack.
  • FIG. 3 shows a schematic structural diagram of a battery 10 according to an embodiment of the present application.
  • the battery 10 may include a plurality of battery modules 20 and a case 30 , and the plurality of battery modules 20 are accommodated inside the case 30 .
  • the box body 30 is used for accommodating the battery cells 21 or the battery modules 20 , so as to prevent liquid or other foreign objects from affecting the charging or discharging of the battery cells 21 .
  • the box body 30 may be a simple three-dimensional structure such as a single cuboid, cylinder or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as a cuboid, cylinder or sphere, which is not limited in this embodiment of the present application.
  • the material of the box body 30 can be such as alloy materials such as aluminum alloy, iron alloy, also can be as polymer material such as polycarbonate, polyisocyanurate foamed plastics, or be the composite material such as glass fiber plus epoxy resin, The embodiment of the present application does not limit this.
  • the box body 30 may include a first part 301 and a second part 302, the first part 301 and the second part 302 cover each other, the first part 301 and the second part 302 jointly define a Space.
  • the second part 302 can be a hollow structure with one end open, the first part 301 can be a plate-shaped structure, and the first part 301 covers the opening side of the second part 302, so that the first part 301 and the second part 302 jointly define a battery.
  • the space of the unit 21 ; the first part 301 and the second part 302 can also be a hollow structure with one side opening, and the opening side of the first part 301 covers the opening side of the second part 302 .
  • FIG. 4 shows a schematic structural diagram of a battery module 20 according to an embodiment of the present application.
  • the battery module 20 may include a plurality of battery cells 21, and the plurality of battery cells 21 may be connected in series or in parallel or in combination to form the battery module 20, and then the plurality of battery modules 20 may be connected in series or in parallel or in combination to form the battery 10.
  • the battery cell 21 may include a lithium ion battery, a sodium ion battery or a magnesium ion battery, etc., which is not limited in this embodiment of the present application.
  • the battery cell 21 may be in the shape of a cylinder, a flat body, a cuboid or other shapes, which is not limited in this embodiment of the present application.
  • the battery cells 21 are generally divided into three types according to the way of packaging: cylindrical battery cells 21 , square square battery cells 21 and pouch battery cells 21 , which are not limited in this embodiment of the present application. However, for the sake of brevity, the following embodiments all take the square-shaped battery cell 21 as an example for illustration.
  • FIG. 5 is a schematic exploded view of a battery cell 21 provided in some embodiments of the present application.
  • the battery cell 21 may include an end cap 211, a casing 212, an electrode assembly 213 and an electrolyte (not shown in the figure), and the electrode assembly 213 may include a positive pole piece, a negative pole piece and a separator ( are not marked in the figure).
  • the battery cell 21 mainly relies on the movement of metal ions between the positive pole piece and the negative pole piece to work.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode current collector; the positive electrode current collector includes a positive electrode current collector coated with a positive electrode active material layer.
  • the material of the positive electrode current collector can be aluminum
  • the positive electrode active material layer includes the positive electrode active material
  • the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode current collector includes a negative electrode current collector coated with a negative electrode active material layer.
  • the material of the negative electrode current collector may be copper, the negative electrode active material layer includes the negative electrode active material, and the negative electrode active material may be carbon or silicon.
  • the material of the spacer can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.
  • the electrode assembly 213 may be a wound structure or a stacked structure, which is not limited in this embodiment of the present application.
  • the casing 212 may have an opening at one end or at both ends, and the end cap 211 covers the opening of the casing 22 to jointly form an accommodating space for the electrode assembly 213 and the electrolyte with the casing 212 .
  • the housing 212 and the end cover 211 can be made of the same material, for example, the housing 212 and the end cover 211 can be made of aluminum, so that the welding of the housing 212 and the end cover 211 can be facilitated, or the housing 212 and the end cover 211 can also be made of different materials, for example, the housing 212 and the end cover 211 can be made of different metals respectively, and other connecting methods such as riveting can be used to connect the housing 212 and the end cover 211 .
  • FIG. 6 is a schematic diagram of a partial explosion of a battery 10 provided by an embodiment of the present application
  • FIG. 7 is a schematic diagram of a partial structure of a battery 10 provided by an embodiment of the present application.
  • the first aspect of the present application provides a battery 10, including: at least four battery cells 21, wherein at least two battery cells 21 are arranged in a battery row 20a along the length direction of the battery cells 21, and at least two battery cells 21 are arranged along the width direction of the battery cells 21 into a battery column 20b; the blocking member 40 is placed in the first gap 201 formed by two adjacent battery rows 20a, and the blocking member 40 is used to block the bottom surface of the battery cell 21 The adhesive spreads toward the end cap 211 of the battery cell 21 .
  • the battery row 20 a is formed by arranging an exponential number of battery cells 21 along the length direction of the battery cells 21 (that is, the X direction in the figure).
  • the number of battery cells 21 included in the battery row 20a may be greater than or equal to two.
  • a first gap 201 is formed between two adjacent battery rows 20 a.
  • the battery row 20 b is formed by arranging an exponential number of battery cells 21 along the width direction of the battery cells 21 (ie, the Y direction in the figure).
  • the number of battery cells 21 included in the battery row 20 b may be greater than or equal to two.
  • a second gap 202 is formed between two adjacent battery rows 20 b.
  • the shape of the blocking member 40 may be a strip structure or a circular frame structure.
  • the outer surface of the barrier 40 may be corrugated in order to make the barrier elastic.
  • the blocking member 40 can be made of an insulating material with good elasticity, such as rubber or sponge or foam board, so as to absorb shock, thereby slowing down the impact of shock on the battery 10, facilitating the improvement of the cycle life of the battery 10, and improving its safety .
  • the blocking member 40 may be made of rubber, so that the blocking member 40 has the function of buffering the expansion tension between the battery cells 21 .
  • the bottom surface (not shown in the figure) of the battery cell 21 refers to the surface of the battery cell 21 that is away from the end cover 211 and extends along the length direction and width direction of the battery cell 21 .
  • the adhesive can be a fluid, such as glue.
  • the material of the adhesive can include polyvinylidene fluoride, polytetrafluoroethylene, sodium carboxymethyl cellulose, styrene-butadiene rubber, polyacrylic acid, polyacrylate, sodium polyacrylate, alginic acid, sodium alginate, polyurethane, acrylic, One or more of epoxy acrylic or modified silane.
  • Adhesive can be applied on the bottom surface of the battery cells 21 for connecting the battery cells 21 with the box body 30 .
  • the adhesive between the battery cells 21 can be prevented from spreading and overflowing to the end cap 211, thereby improving the safety performance of the battery 10.
  • FIG. 8 is a schematic diagram of a partial structure of a battery 10 including a barrier 40 provided by an embodiment of the present application.
  • the blocking member 40 includes: a blocking portion 41 disposed at an end of the blocking member 40 close to the bottom surface of the battery cell 21 , and the blocking portion 41 is used to block the adhesive on the bottom surface of the battery cell 21 from flowing to the battery cell 21
  • the end cap 211 spreads in the direction; the fixing part 42 is disposed at the other end of the blocking member 40 , and the fixing part 42 is used for connecting with the side of the battery cell 21 in the length direction.
  • the side surface of the battery cell 21 includes the surface formed by the battery cell 21 extending along the length direction and the height direction of the battery cell 21 (that is, the Z direction in the figure), and the battery cell 21 A surface formed by extending in the width direction and the height direction.
  • the side of the battery cell 21 in the length direction specifically refers to the side formed by the battery cell 21 extending in the length direction and the height direction.
  • the first gap 201 is formed between the lengthwise side surfaces of two battery cells 21 facing each other in two adjacent battery rows 20 a.
  • the blocking portion 41 may be a frame near the bottom surface of the battery cell 21 in the circular frame, and is used to block the diffusion of the adhesive from the bottom surface toward the end cover 211 .
  • the fixing portion 42 can be the other three frames in the circular frame, and is connected to the side of the battery cell 21 in the length direction to fix the relative position of the blocking member 40 and the battery cell 21 .
  • the fixing part 42 may be fixed to the side of the battery cell 21 by means of glue.
  • the blocking member 40 is provided with a fixing portion 42 to achieve a stable connection between the blocking member 40 and the battery cell 21 .
  • Fig. 9 is a schematic structural diagram of a blocking member 40 including an extension 41a provided by an embodiment of the present application. Front view of battery 10 with barrier 40 .
  • the blocking portion 41 includes an extension portion 41a, the extension portion 41a is located in the second gap 202 formed by two adjacent battery rows 20b, and extends along the height direction of the battery cells 21 away from the fixing portion 42 .
  • the second gap 202 is formed between the side surfaces in the width direction of two battery cells 21 facing each other in two adjacent battery rows 20b.
  • the extension part 41 a may be disposed at a position where the first gap 201 intersects the second gap 202 .
  • an outwardly protruding extension 41 a is provided on the blocking portion 41 to make the adhesive
  • the adhesive is firstly hindered by the extension part 41a, and then the adhesive diffuses to both sides of the extension part 41a after being hindered by the extension part 41a, that is, the adhesive diffuses along the direction avoiding the gap surrounded by the shell chamfer 212R, thereby reducing
  • the possibility of the adhesive entering the gap surrounded by the case chamfer 212R is eliminated, so that the effect of the blocking member 40 blocking the adhesive is better, and the safety performance of the battery 10 is improved.
  • Fig. 11 is a structural schematic diagram of another blocking member 40 including an extension 41a provided by an embodiment of the present application.
  • Fig. 12 is a block diagram provided by an embodiment of the present application including A schematic top view of the battery 10 of the blocking member 40 .
  • the blocking portion 41 includes an extension portion 41a, the extension portion 41a is located in the second gap 202 formed by two adjacent battery rows 20b, and extends along the width direction of the battery cells 21 away from the fixing portion 42 .
  • extending the extension portion 41 a away from the fixed portion 42 along the width direction of the battery cell 21 can increase the area of the extension portion 41 a and further fill the gap surrounded by the case chamfer 212R, thereby reducing The possibility of the adhesive entering the gap surrounded by the case chamfer 212R is eliminated, so that the effect of the blocking member 40 blocking the adhesive is better, and the safety performance of the battery 10 is improved.
  • the battery row 20 a includes n battery cells 21 , and the blocking portion 41 includes m extension portions 41 a, where 1 ⁇ m ⁇ n ⁇ 1. That is, the blocking portion 41 disposed between two adjacent battery rows 20a has at least one extension portion 41a, and at most n ⁇ 1 extension portions 41a.
  • the battery row 20 a When the battery row 20 a includes n battery cells, there is a gap surrounded by n ⁇ 1 end cap chamfers 212R between two adjacent battery rows 20 a.
  • the battery row 20 a includes two battery cells, and the blocking portion 41 includes one extension portion 41 a.
  • the possibility of the gap makes the blocking member 40 more effective in blocking the adhesive, improving the safety performance of the battery 10 .
  • FIG. 13 is a schematic diagram of the length and width of a battery cell 21 and a blocking member 40 provided by an embodiment of the present application.
  • the battery row 20a includes n battery cells, along the length direction, the length of the battery cells 21 is L1, and the length of the blocking member 40 is L2; wherein, L1 ⁇ L2 ⁇ n* L1.
  • the length L1 of the battery cell 21 refers to the dimension of the battery cell 21 in the longitudinal direction.
  • the length L2 of the barrier 40 refers to the dimension of the barrier 40 in the length direction of the battery cell 21 .
  • the length L2 of the blocking member 40 satisfying the above relationship can reduce the interference between the blocking member 40 and the box body 30 .
  • the width of the battery cell 21 is W1
  • the width of the barrier 40 is W2; where, 0.1* W1 ⁇ W2 ⁇ 0.15*W1.
  • the width W1 of the battery cell 21 refers to the dimension of the battery cell 21 in the width direction.
  • the width W2 of the barrier 40 refers to the dimension of the barrier 40 in the width direction of the battery cell 21 .
  • the width W2 of the blocking member 40 satisfying the above relationship can achieve a better balance between blocking the adhesive and increasing the energy density.
  • the present application provides a battery 10.
  • the direction X is arranged to form a battery row 20a, and ten battery cells 21 are arranged along the width direction Y of the battery cells 21 to form a battery column 20b.
  • the battery 10 further includes a blocking member 40 placed in the first gap 201 formed by two adjacent battery rows 20a.
  • the blocking piece 40 is a circular frame structure and is made of rubber, and the blocking piece 40 includes a blocking portion 41 and a fixing portion 42 .
  • the blocking part 41 is a frame close to the bottom surface of the battery cell 21 in the zigzag frame, and the fixing part 42 is the other three frames in the zigzag frame.
  • the blocking portion 41 includes an extending portion 41 a located in the second gap 202 formed by two adjacent battery rows 20 b and extending away from the fixing portion 42 along the width direction Y of the battery cells 21 .
  • the length of the battery cell 21 is L1 (in mm)
  • the length of the blocking member 40 is L2 (in mm)
  • the width of the battery cell 21 is W1 (in mm)
  • the second aspect of the present application provides an electric device, including any battery provided in the first aspect of the present application, and the battery is used to provide electric energy.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请提供一种电池和用电设备。本申请提供的电池在相邻的两排电池单体之间，沿着电池单体的长度方向设置阻挡件。在电池单体入箱装配过程中，电池单体底部的粘接剂在受挤压从壳体倒角组成的间隙向端盖扩散时会被该阻挡件所阻挡，从而避免粘接剂溢出到端盖上，提高电池的安全性能。

Description

电池和用电设备
本申请要求于2021年10月29日提交的名称为“电池和用电设备”的中国专利申请202122624721.8的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池领域，特别涉及一种电池和用电设备。
 背景技术
在现有的电池制造工艺中，电池在入箱装配中往往会出现溢胶现象。溢胶会影响电池在使用过程中的安全性能。因此，如何减少电池在装配过程中的溢胶现象就成为亟待解决的一项问题。
 技术问题
鉴于上述问题，本申请提供一种电池和用电设备
 技术解决方案
本申请第一方面提供一种电池，包括：至少4个电池单体，其中，至少两个电池单体沿电池单体的长度方向排列成电池行，至少两个电池单体沿电池单体的宽度方向排列成电池列；阻挡件，放置于相邻的两个电池行所形成的第一间隙中，所述阻挡件用于阻挡电池单体的底面的粘接剂向电池单体的端盖方向扩散。
在本申请的一实施例中，阻挡件包括：阻挡部，设置于阻挡件靠近电池单体的底面的一端，阻挡部用于阻挡电池单体的底面的粘接剂向电池单体的端盖方向扩散；固定部，设置于阻挡件的另一端，固定部用于与电池单体的长度方向的侧面连接。阻挡件设置有固定部可以实现阻挡件与电池单体的稳固连接。
在本申请的一实施例中，阻挡部包括延伸部，延伸部位于相邻的两个电池列所形成的第二间隙中，并沿电池单体的高度方向朝远离固定部的方向延伸。本方案可以提高阻挡件阻挡粘接剂的效果。
在本申请的一实施例中，阻挡部包括延伸部，延伸部位于相邻的两个电池列所形成的第二间隙中，并沿电池单体的宽度方向朝远离固定部的方向延伸。本方案可以提高阻挡件阻挡粘接剂的效果。
在本申请的一实施例中，电池行包括n个电池单体，阻挡部包括m个延伸部，其中，1≤m≤n-1。本方案可以提高阻挡件阻挡粘接剂的效果。
在本申请的一实施例中，电池行包括n个电池单体，沿长度方向，电池单体的长度为L1，阻挡件的长度为L2；其中，L1<L2≤n* L1。本方案可以减少阻挡件与箱体之间的干涉。
在本申请的一实施例中，在L1与L2的长度单位为毫米时，其中，n* L1-10≤L2≤n* L1。本方案可以减少阻挡件与箱体之间的干涉。
在本申请的一实施例中，沿宽度方向，电池单体的宽度为W1，阻挡件的宽度为W2；其中，0.1* W1≤W2≤0.15* W1。本方案可以提高电池的能量密度。
在本申请的一实施例中，阻挡件由橡胶制成。本方案可以使阻挡件具有缓冲电池单体之间膨胀张力的作用。
本申请第二方面提供一种用电设备，包括本申请第一方面提供的任一项电池，电池用于提供电能。
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。
 有益效果
在电池单体入箱装配过程中，电池单体底部的粘接剂在受挤压从壳体倒角组成的间隙向端盖扩散时会被该阻挡件所阻挡，从而避免粘接剂扩散并溢出到端盖上，提高电池的安全性能。
 附图说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1是现有技术的一种电池内电池单体之间连接的结构示意图；
图2是本申请一实施例提供的车辆的结构示意图；
图3是本申请一实施例提供的电池包的结构示意图；
图4是申请一实施例提供的一种电池模块的结构示意图；
图5是本申请一实施例提供的一种电池单体的爆炸示意图；
图6是本申请一实施例提供的一种电池的局部爆炸示意图；
图7是本申请一实施例提供的一种电池的局部结构示意图；
图8是本申请一实施例提供的一种包含阻挡件的电池的局部结构示意图；
图9是本申请一实施例提供的一种包括延伸部的阻挡件的结构示意图；
图10是本申请一实施例提供的一种包含图9所示的阻挡件的电池的正视图；
图11是本申请一实施例提供的另一种包括延伸部的阻挡件的结构示意图；
图12是本申请一实施例提供的一种包含图11所示的阻挡件的电池的俯视示意图；
图13是本申请一实施例提供的一种电池单体和阻挡件的长度和宽度示意图。
具体实施方式中的附图标号如下：
1车辆，10电池，11控制器，12马达；
20电池模块，201第一间隙，202第二间隙，20a电池行，20b电池列，21电池单体，211端盖，212壳体，212R壳体倒角，213电极组件；
30箱体，301第一部分，302第二部分；
40阻挡件，41阻挡部，41a延伸部，42固定部。
 本发明的实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
需要注意的是，除非另有说明，本申请实施例使用的技术术语或者科学术语应当为本申请实施例所属领域技术人员所理解的通常意义。
在本申请实施例的描述中，技术术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。
此外，技术术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本申请实施例的描述中，除非另有明确的规定和限定，技术术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；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或两个元件的相互作用关系。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实施例中的具体含义。
在本申请实施例的描述中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在现有的电池制造和装配工艺中，电池单体的壳体边缘会进行倒圆角处理以避免壳体边缘过于尖锐刺破绝缘膜。图1是现有技术的一种电池10’内电池单体21’之间连接的结构示意图。如图1所示，在电池单体21’组成双排或多排模块时，每相邻的四个电池单体21’就会有四个壳体倒角212R’形成一个间隙，从而导致在电池单体21’入箱装配过程中，涂抹在电池单体21’的底面上的粘接剂会从该间隙向电池单体21’的端盖211’方向扩散，甚至会溢出到端盖211’并固化成块，进而在循环膨胀的过程中，使电池单体21’的端盖211’的焊缝处的应力得不到释放，致使端盖211’开裂，电池单体21’漏液，严重影响电池10’的安全性能。
对此，申请人经研究发现，可以在相邻的两排电池单体之间，沿着电池单体的长度方向设置阻挡件。当电池单体入箱装配过程中，电池单体底部的粘接剂在受挤压从壳体倒角组成的间隙向端盖扩散时会被该阻挡件所阻挡，从而避免粘接剂溢出到端盖上，提高电池的安全性能。
本申请提供一种电池，以及使用该电池的用电设备。本申请所提供的电池可以是电池模块或电池包，或者一次电池和二次电池，例如，二次电池包括镍氢电池、镍镉电池、铅酸（或铅蓄）电池、锂离子电池、钠离子电池、聚合物电池等。本申请所提供的电池适用于各种使用电池的用电设备，例如手机、便携式设备、笔记本电脑、电瓶车、电动玩具、电动工具、电动车辆、船舶和航天器等，例如，航天器包括飞机、火箭、航天飞机和宇宙飞船等；电池用于为上述用电设备提供电能。
应理解，本申请实施例描述的技术方案不仅仅局限适用于上述所描述的电池和用电设备，还可以适用于所有包括箱体的电池以及使用电池的用电设备，但为描述简洁，下述实施例均以电动车辆为例进行说明。
请参看图2，图2为本申请一些实施例提供的车辆1的结构示意图。车辆1可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1的内部设置有电池10，电池10可以设置在车辆1的底部或头部或尾部。电池10可以用于车辆1的供电，例如，电池10可以作为车辆1的操作电源。车辆1还可以包括控制器11和马达12，控制器11用来控制电池10为马达12供电，例如，用于车辆1的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中，电池10不仅可以作为车辆1的操作电源，还可以作为车辆1的驱动电源，代替或部分地代替燃油或天然气为车辆1提供驱动动力。
为了满足不同的使用电力需求，电池10可以包括多个电池单体21，电池单体21是指组成电池模块或电池包的最小单元。多个电池单体21可经由电极端子而被串联和/或并联在一起以应用于各种应用场合。本申请中所提到的电池包括电池模块或电池包。其中，多个电池单体21之间可以串联或并联或混联，混联是指串联和并联的混合。电池10也可以称为电池包。本申请的实施例中多个电池单体21可以直接组成电池包，也可以先组成电池模块20，电池模块20再组成电池包。
图3示出了本申请一实施例的电池10的结构示意图。图3中，电池10可以包括多个电池模块20和箱体30，多个电池模块20容纳于箱体30内部。箱体30用于容纳电池单体21或电池模块20，以避免液体或其他异物影响电池单体21的充电或放电。箱体30可以是单独的长方体或者圆柱体或球体等简单立体结构，也可以是由长方体或者圆柱体或球体等简单立体结构组合而成的复杂立体结构，本申请实施例对此并不限定。箱体30的材质可以是如铝合金、铁合金等合金材料，也可以是如聚碳酸酯、聚异氰脲酸酯泡沫塑料等高分子材料，或者是如玻璃纤维加环氧树脂的复合材料，本申请实施例对此也并不限定。
在一些实施例中，箱体30可以包括第一部分301和第二部分302，第一部分301与第二部分302相互盖合，第一部分301和第二部分302共同限定出用于容纳电池单体21的空间。第二部分302可以为一端开口的空心结构，第一部分301可以为板状结构，第一部分301盖合于第二部分302的开口侧，以使第一部分301与第二部分302共同限定出容纳电池单体21的空间；第一部分301和第二部分302也可以是均为一侧开口的空心结构，第一部分301的开口侧盖合于第二部分302的开口侧。
图4示出了本申请一实施例的电池模块20的结构示意图。图4中，电池模块20可以包括多个电池单体21，多个电池单体21可以先串联或并联或混联组成电池模块20，多个电池模块20再串联或并联或混联组成电池10。本申请中，电池单体21可以包括锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。电池单体21可呈圆柱体、扁平体、长方体或其它形状等，本申请实施例对此也不限定。电池单体21一般按封装的方式分成三种：柱形电池单体21、方体方形电池单体21和软包电池单体21，本申请实施例对此也不限定。但为描述简洁，下述实施例均以方体方形电池单体21为例进行说明。
请参阅图5，图5为本申请一些实施例提供的电池单体21的爆炸示意图。如图5所示，电池单体21可以包括端盖211、壳体212、电极组件213和电解液（图中未示出），电极组件213可以包括正极极片、负极极片和隔离件（在图中均未标出）。电池单体21主要依靠金属离子在正极极片和负极极片之间移动来工作。正极极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面；正极集流体包括涂覆有正极活性物质层的正极集流部。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质层包括正极活性物质，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面；负极集流体包括涂覆有负极活性物质层的负极集流部。负极集流体的材料可以为铜，负极活性物质层包括负极活性物质，负极活性物质可以为碳或硅等。隔离件的材质可以为PP（polypropylene，聚丙烯）或PE（polyethylene，聚乙烯）等。此外，电极组件213可以是卷绕式结构，也可以是叠片式结构，本申请实施例并不限于此。壳体212可以为一端具有开口，也可以在两端具有开口，端盖211盖合于壳体22的开口处，以与壳体212共同形成容纳电极组件213和电解液的容纳空间。可选地，壳体212和端盖211可以为同一种材料制成，例如壳体212和端盖211可以均为铝制，这样，可以便于焊接壳体212和端盖211，或者，壳体212和端盖211也可以为不同的材料制成，例如，壳体212和端盖211可以分别采用不同金属制成，并且，可以使用铆接等其他的连接方法连接壳体212和端盖211。
请参看图6和图7，图6为本申请一实施例提供的一种电池10的局部爆炸示意图，图7是本申请一实施例提供的一种电池10的局部结构示意图。本申请第一方面提供一种电池10，包括：至少4个电池单体21，其中，至少两个电池单体21沿电池单体21的长度方向排列成电池行20a，至少两个电池单体21沿电池单体21的宽度方向排列成电池列20b；阻挡件40，放置于相邻的两个电池行20a所形成的第一间隙201中，阻挡件40用于阻挡电池单体21的底面的粘接剂向电池单体21的端盖211方向扩散。
电池行20a是指数个电池单体21沿着电池单体21的长度方向（即图中的X方向）排列而成。可选地，电池行20a包括的电池单体21的数量可以大于或等于2。如图7所示，相邻的两个电池行20a之间形成有第一间隙201。
电池列20b是指数个电池单体21沿着电池单体21的宽度方向（即图中的Y方向）排列而成。可选地，电池列20b包括的电池单体21的数量可以大于或等于2。如图7所示，相邻的两个电池列20b之间形成有第二间隙202。
阻挡件40的形状可以是条状结构或回形框结构。阻挡件40的外表面可以有褶皱，便于使阻挡件有弹性。阻挡件40可以由弹性良好的绝缘材料制成，例如可以为橡胶或海绵或泡沫板，从而吸收震动，从而减缓震动对电池10的影响，便于提高电池10的循环寿命，且能提高其安全性。阻挡件40可以由橡胶制成，使阻挡件40具有缓冲电池单体21之间膨胀张力的作用。
电池单体21的底面（图中未示出）指电池单体21中远离端盖211并沿电池单体21的长度方向和宽度方向延伸所构成的面。
粘接剂（图中未示出）用于粘接电池单体21和箱体30。粘接剂可以为流体，如胶水。粘接剂的材质可以包括聚偏氟乙烯、聚四氟乙烯、羧甲基纤维素钠、丁苯橡胶、聚丙烯酸、聚丙烯酸酯、聚丙烯酸钠、海藻酸、海藻酸钠、聚氨酯、丙烯酸、环氧丙烯酸或改性硅烷中的一种或多种。粘接剂可以涂抹在电池单体21的底面上用于使电池单体21与箱体30相连接。
通过将阻挡件40设置于相邻的两个电池行20a之间，可以防止电池单体21之间的粘接剂扩散并溢出到端盖211，从而提高电池10的安全性能。
请参看图8，图8为本申请一实施例提供的一种包含阻挡件40的电池10的局部结构示意图。可选地，阻挡件40包括：阻挡部41，设置于阻挡件40靠近电池单体21的底面的一端，阻挡部41用于阻挡电池单体21的底面的粘接剂向电池单体21的端盖211方向扩散；固定部42，设置于阻挡件40的另一端，固定部42用于与电池单体21的长度方向的侧面连接。
电池单体21的侧面（图中未示出）包括电池单体21中沿电池单体21的长度方向和高度方向（即图中的Z方向）延伸所构成的面，以及由电池单体21沿宽度方向和高度方向延伸所构成的面。电池单体21的长度方向的侧面特指由电池单体21沿长度方向和高度方向延伸所构成的侧面。第一间隙201形成于相邻的两个电池行20a的相对的两个电池单体21的长度方向的侧面之间。
在阻挡件40为回形框结构时，阻挡部41可以是回形框中靠近电池单体21的底面的边框，用于阻挡粘接剂从底面向端盖211的方向扩散。固定部42可以是回形框中的另外3条边框，并与电池单体21的长度方向的侧面相连接以固定阻挡件40与电池单体21的相对位置。可选地，固定部42与电池单体21的侧面之间可以采用胶粘的方式固定。
阻挡件40设置有固定部42可以实现阻挡件40与电池单体21的稳固连接。
请参看图9和图10，图9为本申请一实施例提供的一种包括延伸部41a的阻挡件40的结构示意图，图10是本申请一实施例提供的一种包含图9所示的阻挡件40的电池10的正视图。可选地，阻挡部41包括延伸部41a，延伸部41a位于相邻的两个电池列20b所形成的第二间隙202中，并沿电池单体21的高度方向朝远离固定部42的方向延伸。
第二间隙202形成于相邻的两列电池列20b的相对的两个电池单体21的宽度方向的侧面之间。
延伸部41a可以设置于第一间隙201与第二间隙202相交的位置处。如图10所示，在粘接剂因受挤压作用从电池单体21的底面向端盖211的方向溢胶过程中，于阻挡部41上设置向外凸出的延伸部41a可以使粘接剂首先受到延伸部41a的阻碍，粘接剂被延伸部41a阻碍后向延伸部41a的两边扩散，即粘接剂沿避开壳体倒角212R所围成的间隙的方向扩散，从而减少了粘接剂进入壳体倒角212R所围成的间隙的可能性，使得阻挡件40阻挡粘接剂的效果更加优良，提高了电池10的安全性能。
请参看图11和图12，图11为本申请一实施例提供的另一种包括延伸部41a的阻挡件40的结构示意图，图12是本申请一实施例提供的一种包含图11所示的阻挡件40的电池10的俯视示意图。可选地，阻挡部41包括延伸部41a，延伸部41a位于相邻的两个电池列20b所形成的第二间隙202中，并沿电池单体21的宽度方向朝远离固定部42的方向延伸。
如图11所示，延伸部41a沿电池单体21的宽度方向朝远离固定部42的方向延伸可以使延伸部41a的面积增大并进一步填充壳体倒角212R所围成的间隙，从而减少了粘接剂进入壳体倒角212R所围成的间隙的可能性，使得阻挡件40阻挡粘接剂的效果更加优良，提高了电池10的安全性能。
可选地，电池行20a包括n个电池单体21，阻挡部41包括m个延伸部41a，其中，1≤m≤n-1。即设置于相邻两个电池行20a之间的阻挡部41最少有1个延伸部41a，最多有n-1个延伸部41a。
在电池行20a包括n个电池单体时，两个相邻的电池行20a之间包括有n-1个端盖倒角212R所围成的间隙。例如，如图10所示，电池行20a包括2个电池单体，阻挡部41包括1个延伸部41a。可选地，m=n-1，使阻挡部41所包括的延伸部41a的数量m等于端盖倒角213R所围成的间隙的数量可以减少粘接剂进入端盖倒角212R所围成的间隙的可能性，使得阻挡件40阻挡粘接剂的效果更加优良，提高了电池10的安全性能。
请参看图13，图13是本申请一实施例提供的一种电池单体21和阻挡件40的长度和宽度示意图。可选地，电池行20a包括n个电池单体，沿长度方向，电池单体21的长度为L1，阻挡件40的长度为L2；其中，L1<L2≤n* L1。
可选地，在L1与L2的长度单位为毫米时，其中，n* L1-10≤L2≤n* L1。
电池单体21的长度L1指电池单体21在长度方向的尺寸。阻挡件40的长度L2指阻挡件40在电池单体21的长度方向的尺寸。
阻挡件40的长度L2满足上述关系可以减少阻挡件40与箱体30之间的干涉。
请参看图13，可选地，沿宽度方向，电池单体21的宽度为W1，阻挡件40的宽度为W2；其中，0.1* W1≤W2≤0.15* W1。
电池单体21的宽度W1指电池单体21在宽度方向的尺寸。阻挡件40的宽度W2指阻挡件40在电池单体21的宽度方向的尺寸。
阻挡件40的宽度W2满足上述关系可以在实现阻挡粘接剂以及提高能量密度之间达到较好的平衡。
可选地，本申请提供一种电池10，参考图6至图8、图11至图13，电池10包括20个电池单体21，其中，两个电池单体21沿电池单体21的长度方向X排列成电池行20a，十个电池单体21沿电池单体21的宽度方向Y排列成电池列20b。电池10还包括阻挡件40，阻挡件40放置于相邻的两个电池行20a所形成的第一间隙201中。其中，阻挡件40是回形框结构并由橡胶制成，阻挡件40包括阻挡部41和固定部42。阻挡部41是回形框中靠近电池单体21的底面的边框，固定部42是回形框中的另外3条边框。阻挡部41包括1个延伸部41a，延伸部41a位于相邻的两个电池列20b所形成的第二间隙202中，并沿电池单体21的宽度方向Y朝远离固定部42的方向延伸。其中，电池单体21的长度为L1（单位为毫米），阻挡件40的长度为L2（单位为毫米），电池单体21的宽度为W1（单位为毫米），阻挡件40的宽度为W2（单位为毫米）；并且，L2=2* L1-10，W2=0.1* W1。
本申请第二方面提供一种用电设备，包括本申请第一方面提供的任一项电池，电池用于提供电能。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参看前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围，其均应涵盖在本申请的权利要求和说明书的范围当中。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 (10)

  1. 一种电池，其中，包括：
    至少4个电池单体，其中，至少两个所述电池单体沿所述电池单体的长度方向排列成电池行，至少两个所述电池单体沿所述电池单体的宽度方向排列成电池列；
    阻挡件，放置于相邻的两个所述电池行所形成的第一间隙中，所述阻挡件用于阻挡所述电池单体的底面的粘接剂向所述电池单体的端盖方向扩散。
  2. 根据权利要求1所述的电池，其中，所述阻挡件包括：
    阻挡部，设置于所述阻挡件靠近所述电池单体的底面的一端，所述阻挡部用于阻挡所述电池单体的底面的粘接剂向所述电池单体的端盖方向扩散；
    固定部，设置于所述阻挡件的另一端，所述固定部用于与所述电池单体的所述长度方向的侧面连接。
  3. 根据权利要求2所述的电池，其中，所述阻挡部包括延伸部，所述延伸部位于相邻的两个所述电池列所形成的第二间隙中，并沿所述电池单体的高度方向朝远离所述固定部的方向延伸。
  4. 根据权利要求2所述的电池，其中，所述阻挡部包括延伸部，所述延伸部位于相邻的两个所述电池列所形成的第二间隙中，并沿所述电池单体的宽度方向朝远离所述固定部的方向延伸。
  5. 根据权利要求3或4所述的电池，其中，所述电池行包括n个所述电池单体，所述阻挡部包括m个所述延伸部，其中，1≤m≤n-1。
  6. 根据权利要求1至5中任意一项所述的电池，其中，所述电池行包括n个所述电池单体，沿所述长度方向，所述电池单体的长度为L1，所述阻挡件的长度为L2；
    其中，L1<L2≤n* L1。
  7. 根据权利要求6所述的电池，其中，所述L1与L2的长度单位为毫米，n* L1-10≤L2≤n* L1。
  8. 根据权利要求1至7中任意一项所述的电池，其中，沿所述宽度方向，所述电池单体的宽度为W1，所述阻挡件的宽度为W2；其中，0.1* W1≤W2≤0.15* W1。
  9. 根据权利要求1至8中任意一项所述的电池，其中，所述阻挡件由橡胶制成。
  10. 一种用电设备，其中，包括如权利要求1-9任一项所述的电池，所述电池用于提供电能。
PCT/CN2022/125493 2021-10-29 2022-10-14 电池和用电设备 Ceased WO2023071837A1 (zh)

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