WO2021233035A1 - 一种电池、电池包及汽车 - Google Patents

一种电池、电池包及汽车 Download PDF

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Publication number
WO2021233035A1
WO2021233035A1 PCT/CN2021/087931 CN2021087931W WO2021233035A1 WO 2021233035 A1 WO2021233035 A1 WO 2021233035A1 CN 2021087931 W CN2021087931 W CN 2021087931W WO 2021233035 A1 WO2021233035 A1 WO 2021233035A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
pole core
positioning portion
battery
spacer
Prior art date
Application number
PCT/CN2021/087931
Other languages
English (en)
French (fr)
Inventor
胡世超
张明明
朱燕
Original Assignee
比亚迪股份有限公司
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 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Priority to EP21808919.1A priority Critical patent/EP4148895A4/en
Priority to JP2022570576A priority patent/JP2023525918A/ja
Priority to KR1020227042998A priority patent/KR20230008817A/ko
Publication of WO2021233035A1 publication Critical patent/WO2021233035A1/zh
Priority to US17/988,023 priority patent/US20230072369A1/en

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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
    • H01M50/289—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
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
    • 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
    • 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

  • This application relates to the field of batteries, in particular to a battery, a battery pack and an automobile.
  • This application aims to solve at least one of the technical problems existing in the prior art.
  • the first aspect of the present application provides a battery including a casing and a plurality of pole core groups encapsulated in the casing, the pole core sets are connected in series, and the pole core set includes an encapsulating film and at least one pole core, The at least one pole core is located in a containing cavity surrounded by the packaging film; a spacer ring is arranged between the two pole core groups connected in series, the spacer ring is provided with a through hole, and the pole core group It includes a first electrode and a second electrode, the first electrode and the second electrode extend outside the packaging film, and the first electrode of one of the two electrode core groups connected in series is connected to the The second electrode of the other electrode core group is connected, and the connection part of the first electrode and the second electrode correspondingly connected is accommodated in the through hole; the spacer includes an outer peripheral surface facing the inner surface of the housing, so At least one first positioning portion is formed on the outer peripheral surface of the spacer, the inner surface of the housing is formed with a second positioning portion corresponding to the first
  • the first positioning portion is a groove formed by the outer periphery of the spacer ring being recessed into the inner surface of the spacer
  • the second positioning portion is a protrusion formed on the inner surface of the housing, the The protrusion is embedded in the groove.
  • the first positioning portion is a protrusion formed on the outer peripheral surface of the spacer
  • the second positioning portion is a groove formed on the inner surface of the housing
  • the protrusion is embedded in the In the groove.
  • the two pole core sets connected in series are two adjacent pole core sets, and the spacer is located between the two adjacent pole core sets.
  • the spacer ring includes a first insert and a second insert, and the first insert and the second insert are respectively located on both sides of the connecting portion of the first electrode and the second electrode that are connected to each other to share The connection part is clamped, and the gap between the first insert and the second insert constitutes the through hole.
  • the first insert and the second insert are respectively bonded and fixed to the pole core group.
  • the gap between the two adjacent pole core groups is filled with a plastic material to form the spacer ring between the two adjacent pole core groups.
  • the outer surface of the pole core set and the inner surface of the housing are bonded and fixed.
  • a second aspect of the present application provides a battery pack including a plurality of the above-mentioned batteries.
  • the third aspect of the present application provides an automobile, including the above-mentioned battery pack.
  • a spacer ring is provided between the two pole core groups connected in series, and the connection part of the two pole core groups connected in series is arranged in the spacer ring, so that the spacer ring can be used to better
  • Each pole core group is better fixed to prevent the movement between the pole core sets, maintain the effective fixation of the connection between the pole core sets, and can also increase the strength of the connection part, which can prevent the pole core from being
  • the connection parts between the core groups are twisted, broken, etc., which improves the reliability of the connection between the pole core groups.
  • the first positioning part of the spacer and the second positioning part on the housing are matched with each other to separate the spacers. The ring and the shell are fixed, which can further prevent the movement between the pole core groups and improve the anti-movement effect.
  • FIG. 1 is a schematic structural diagram of a battery in an embodiment of the application after the casing is removed.
  • FIG. 2 is a schematic diagram of the structure of one of the electrode core groups of the battery in an embodiment of the application.
  • FIG. 3 is a schematic diagram of the structure of a battery in an embodiment of the application.
  • Fig. 4 is a schematic diagram of the assembly of the pole core assembly and the spacer ring in this application.
  • FIG. 5 is a schematic diagram of the structure of the pole core assembly and the spacer ring in this application.
  • FIG. 6 is a schematic cross-sectional view of the battery at VI-VI in an embodiment of the application.
  • Fig. 7 is a schematic cross-sectional view of Fig. 6 in another embodiment.
  • Fig. 8 is a schematic cross-sectional view of Fig. 6 in another embodiment.
  • FIG. 9 is a schematic diagram of the structure of a battery pack in an embodiment of the application.
  • FIG. 10 is a schematic diagram of the structure of an automobile according to an embodiment of the application.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present application, “multiple” means two or more than two, unless otherwise specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • installed can be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • the present application provides a battery including a casing and a plurality of pole core groups encapsulated in the casing, the pole core sets are connected in series, the pole core set includes an encapsulating film and at least one pole core, the At least one pole core is located in the accommodating cavity surrounded by the packaging film; a spacer ring is provided between the two pole core groups connected in series, and the spacer ring is provided with a through hole, and the pole core group includes a first One electrode and a second electrode, the first electrode and the second electrode protruding out of the encapsulation film, the first electrode of one of the two electrode core groups connected in series and the other The second electrode of the pole core group is connected, and the connection part of the first electrode and the second electrode correspondingly connected is accommodated in the through hole; the spacer includes an outer peripheral surface facing the inner surface of the housing, and the spacer At least one first positioning portion is formed on the outer peripheral surface of the ring, the inner surface of the housing is formed with a second positioning portion corresponding to the first
  • a spacer ring is provided between the two pole core groups connected in series, and the connection part of the two pole core groups connected in series is arranged in the spacer ring, so that the spacer ring can be used to better
  • Each pole core group is better fixed to prevent the movement between the pole core sets, maintain the effective fixation of the connection between the pole core sets, and can also enhance the strength of the connection part, thereby preventing the pole core from being used during battery use.
  • the connection between the core groups is twisted, broken, etc., which improves the reliability of the connection between the pole core groups.
  • the first positioning part of the spacer and the second positioning part on the housing are matched with each other to make the spacer It is fixed with the shell, which can further prevent the movement between the pole core groups and improve the anti-movement effect.
  • FIG. 1 is a schematic diagram of the structure of the battery in an embodiment of the application after the casing is removed;
  • FIG. 2 is the structure of the pole assembly of the battery in an embodiment of the application Schematic diagram;
  • Figure 3 is a schematic diagram of the structure of the battery provided by this application.
  • the battery 100 includes a casing 10 and a plurality of pole core groups 20 encapsulated in the casing 10.
  • the plurality of pole core groups 20 are connected in series.
  • the pole core set 20 includes an encapsulation film 201 and at least one pole core, and the at least one pole core is located in a receiving cavity surrounded by the encapsulation film 201.
  • a spacer 30 is provided between the two pole core groups 20 connected in series.
  • FIG. 4 and FIG. 5 are schematic diagrams of the structure of the pole core assembly and the spacer ring in this application.
  • the spacer 30 is provided with a through hole 301
  • the pole core group 20 includes a first electrode 21 and a second electrode 22.
  • One of the first electrode 21 and the second electrode 22 is a positive electrode, and the other is a negative electrode. electrode.
  • the first electrode 21 and the second electrode 22 extend out of the packaging film 201.
  • the first electrode 21 of one electrode core group 20 of the two electrode core groups 20 connected in series is connected to the second electrode 22 of the other electrode core group 20, and the connection part is accommodated in the through hole 301.
  • FIG. 1 is schematic diagrams of the structure of the pole core assembly and the spacer ring in this application.
  • the spacer 30 is provided with a through hole 301
  • the pole core group 20 includes a first electrode 21 and a second electrode 22.
  • One of the first electrode 21 and the second electrode 22 is a positive electrode, and the other is a negative electrode.
  • the spacer 30 includes an outer peripheral surface 302 facing the inner surface of the housing 10, and at least one first positioning portion 303 is formed on the outer peripheral surface 302 of the spacer 30.
  • the inner surface 101 of the housing 10 is formed with a second positioning portion 102 corresponding to the first positioning portion 303 one-to-one.
  • the first positioning portion 303 cooperates with the corresponding second positioning portion 102 to fix the spacer 30 and the housing 10.
  • connection location between the pole core groups 20 refers to the connection location where the first electrode 21 of one pole core set 20 of the two pole core sets 20 is connected to the second electrode 22 of the other pole core set 20,
  • the spacer 30 can be used. It is better to fix each pole core group 20 better, prevent the movement between the pole core sets 20, maintain the effective fixation of the connection between the pole core sets 20, and also enhance the strength of the connection part, so that the Prevent the connection between the pole core groups 20 from being twisted or broken during the battery use, and improve the reliability of the connection between the pole core groups 20.
  • the upper second positioning portion 102 cooperates with each other to fix the spacer 30 and the housing 10, which can further prevent movement between the pole core groups 20 and improve the anti-movement effect.
  • the length of the battery 100 extends along the first direction L
  • the length of the pole core group 20 extends along the first direction L
  • the plurality of pole core groups 20 are arranged along the first direction L
  • the first electrode 21 and the second electrode 22 of the pole core set 20 are arranged at opposite ends of the pole core set 20 along the first direction L
  • the two pole core sets 20 connected in series are two adjacent pole cores.
  • this arrangement makes it easier to manufacture the battery 100 with a longer length. Therefore, when the battery 100 is installed in the battery pack casing, there is no need to provide support structures such as beams and longitudinal beams, but the battery 100 itself is used.
  • the battery 100 is directly mounted on the outer shell of the battery pack as the support of the housing 10, thereby saving the internal space of the battery pack, improving the volume utilization rate of the battery pack, and reducing the weight of the battery pack.
  • connection between the pole core groups 20 becomes the weak part of the entire battery, which is likely to be twisted or broken during the use of the battery, resulting in connection failure.
  • the battery is connected in series.
  • a pole core group 20 increases the risk of the battery moving in the first direction L. Therefore, in the present application, by providing a spacer 30 between the two pole core groups 20 connected in series, the connection part of the two pole core groups 20 is arranged in the through hole 301 of the spacer 30, so that the connection part can be strengthened.
  • the first positioning portion 303 of the spacer 30 and the second positioning portion 102 on the housing 10 cooperate with each other to better fix the pole core groups 20 and prevent the pole core groups 20 from moving in the first direction. Fluctuating occurs on L to maintain the effectiveness of the connection between the pole core groups 20, increase the mechanical strength of the battery 100, and prevent the battery 100 from being twisted or broken during use.
  • the housing 10 is a metal housing.
  • metal housing For example, aluminum shell; of course, it can also be made of other metals according to needs. Therefore, the casing 10 has sufficient strength to avoid being damaged or deformed, and the safety of the battery 100 is improved.
  • the packaging film 201 is an aluminum-plastic composite film or a polymer material composite film.
  • the first electrode 21 and the second electrode 22 of the pole core group 20 extend out of the packaging film 201. That is, in the embodiment of the present application, the spacer 30 is a spacer 30 disposed outside the packaging film 201, and the spacer 30 is externally provided through the film to improve the reliability of the connection between the pole core groups 20.
  • the pole core mentioned in this application can also be understood as a pole core commonly used in the field of power batteries.
  • the pole core and the pole core group 20 are internal components of the casing 10 of the battery 100, and cannot be understood as the battery itself;
  • the core may be a pole core formed by winding, and the pole core generally refers to a component that is not completely sealed. Therefore, the battery mentioned in this application cannot be simply understood as a battery module or battery pack because it contains multiple pole cores.
  • the pole core group 20 may be composed of a single pole core; it may also include a plurality of pole cores, and the plurality of pole cores are connected in parallel to form the pole core set 20.
  • the two pole core sets 20 connected in series are two adjacent pole core sets 20, and the spacer 30 is located between the two adjacent pole core sets 20.
  • a spacer 30 is provided between every two adjacent pole core sets 20, and the spacer 30 can space the two adjacent pole core sets 20.
  • the spacer 30 and the housing 10 are mutually positioned, which is beneficial to further prevent The core group 20 oscillates in the first direction L thereof.
  • the first positioning portion 303 is a groove formed by the outer peripheral surface 302 of the spacer ring 30 recessed toward the inside of the spacer ring 30; the second positioning portion 102 It is a protrusion formed on the inner surface 101 of the casing 10, and the protrusion is embedded in the groove to fix the spacer 30 and the casing 10.
  • the spacer ring 30 can be realized through mutual cooperation between the protrusions of the housing 10 and the grooves on the spacer ring 30.
  • the fixing and positioning between the housing 10 and the housing 10 can further prevent the movement of the pole core assembly 20 and save the space occupied by the battery 100.
  • the spacer 30 may be connected to the largest surface (also referred to as a "large surface") of the casing 10.
  • the thickness of the battery 100 extends along the second direction W, wherein , The second direction W is perpendicular to the first direction L.
  • the case 10 of each battery 100 includes a first side 11 and a second side 12 on opposite sides in the second direction W, the first side 11 and the second side 12 being the largest surface of the battery 100.
  • a second positioning portion 102 is provided on the first side surface 11 and the second side surface 12 of the housing 10, and a first positioning portion 102 is provided on the inner peripheral surface of the spacer 30 corresponding to the first side surface 11 and the second side surface 12
  • the positioning portion 303, the first positioning portion 303 and the second positioning portion 102 correspond one-to-one to achieve the fixing of the spacer 30 and the housing 10 with corresponding cooperation.
  • the first positioning portion 303 may also be a protrusion formed on the outer peripheral surface 302 of the spacer 30, and the second positioning portion 102 is a protrusion of the housing 10 A groove formed on the inner surface 101, and the protrusion is embedded in the groove to fix the spacer 30 and the housing 10.
  • the grooves of the casing 10 and the protrusions on the spacer ring 30 are mutually matched. Realizing the fixation and positioning between the spacer 30 and the housing 10 can further prevent the movement of the pole core assembly 20 and save the space occupied by the battery 100.
  • the second positioning portion 102 on the first side surface 11 is a protrusion formed on the inner surface 101 of the housing 10
  • the first positioning portion 303 is a protrusion formed on the inner surface 101 of the housing 10.
  • the protrusion corresponds to a groove formed on the outer peripheral surface 302 of the spacer 30, and the protrusion matches the groove.
  • the second positioning portion 102 on the second side surface 12 is a groove formed on the inner surface 101 of the housing 10, and the first positioning portion 303 is corresponding to the protrusion and is provided on the spacer 30
  • the protrusions formed on the outer peripheral surface 302 of the device are matched with the grooves.
  • the second positioning portion 102 on the first side surface 11 of the battery 100 of the casing 10 is a protrusion
  • the corresponding first positioning portion 303 is a groove
  • the second positioning portion 102 on the second side surface 12 is a groove
  • corresponding to The first positioning portion 303 is a protrusion
  • the protrusion cooperates with the groove, which realizes the fixation and positioning between the spacer 30 and the casing 10, and also realizes the fixation and positioning between the casing 10 and the casing 10. It is possible to further prevent the movement of the electrode core group 20, and to move the casings 10 of adjacent batteries 100 to each other.
  • the spacer 30 is a split spacer, which is formed by pre-forming the spacer and then installed between the pole core groups 20.
  • the spacer 30 includes a first insert 31 and a second insert 32, and the first insert 31 and the second insert 32 are respectively located at two corresponding connection positions of the first electrode 21 and the second electrode 22.
  • the space occupied by the connecting part in the spacer 30 is the through hole 301 on the spacer 30.
  • the first insert 31 and the second insert 32 are formed in advance and then assembled. For example, during assembly, after the pole core set 20 is connected, the first insert 31 and the second insert can be assembled.
  • the pieces 32 respectively fix the two sides of the connection part between the pole core groups 20 to realize the assembly of the spacer 30 and the pole core group 20.
  • the first insert 31 and the second insert 32 are respectively bonded and fixed to the pole core assembly 20, that is, an adhesive layer may be provided in the gap between the spacer 30 and the pole core assembly 20 to The spacer 30 and the pole core set 20 are fixed, so that each pole core set 20 can be fixed, which can better prevent the pole core sets 20 from moving between the pole core sets 20, ensure the connection between the pole core sets 20, and improve the battery Security.
  • first insert 31 and the second insert 32 may be fixed to each other in the form of a buckle, or the first insert 31 and the second insert 32 may also be bonded to each other. Fixing, or the first insert 31 and the second insert 32 can be respectively bonded and fixed to the connection part between the pole core group 20 by means of bonding.
  • the first insert 31 and the second insert 32 can be positioned mutually, and the matching effect of the first insert 31 and the second insert 32 is better, which is more conducive to the assembly of other components.
  • the gap between two adjacent pole core sets 20 is filled with a plastic material to form the spacer 30 between the two adjacent pole core sets 20. That is, the spacer 30 may directly fill the plastic material between the two pole core sets 20 after the two adjacent pole core sets 20 are connected to form the two pole core sets 20 between the two adjacent pole core sets.
  • the spacer 30 is such that the connection part of the adjacent two-pole core group 20 is located in the spacer 30.
  • the outer surface of the pole core set 20 and the inner surface 101 of the housing 10 are bonded and fixed. Therefore, the pole core group 20 can be further fixed to prevent movement between the pole core groups 20.
  • the battery 100 is substantially a rectangular parallelepiped, and the battery 100 has a length L, a thickness W, and a height H.
  • the length L is greater than the height H, and the height H is greater than the thickness W.
  • the length of the battery 100 is 400-2500 mm.
  • the ratio of the length to the height of the battery 100 is 4-21.
  • the battery 100 is generally a rectangular parallelepiped. It can be understood that the battery 100 can be a rectangular parallelepiped shape, a cube shape, or a part of a special shape, but it is generally a rectangular parallelepiped shape or a cube shape; or there are some gaps, protrusions, chamfers, It is curved and curved, but the overall shape is similar to a rectangular parallelepiped or a cube.
  • the present application also provides a battery module, which includes a plurality of batteries 100 provided in the present application.
  • the present application also provides a battery pack, which includes a plurality of batteries 100 provided in the present application or battery modules provided in the present application.
  • the battery pack 200 provided in the present application includes a tray 22 and batteries 100 arranged on the tray 22.
  • the present application also provides an automobile 300, which includes the battery module or battery pack 200 provided in the present application.
  • this application has the above-mentioned excellent characteristics, which can enhance the performance and practicability that is not available in the prior art in use, and become a product of great practical value.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present application, "a plurality of” means two or more, unless otherwise clearly and specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • installed can be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
  • the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. touch.
  • the "above”, “above” and “above” of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than that of the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

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Abstract

本申请提供了一种电池、电池包及汽车，电池包括壳体和封装于壳体内的多个极芯组，极芯组包括封装膜和至少一个极芯，至少一个极芯位于封装膜包围形成的容纳腔内；串联连接的两个极芯组之间设有隔圈，极芯组包括第一电极和第二电极，第一电极和第二电极伸出封装膜外，串联连接的两个极芯组中的其中一个极芯组的第一电极与另一个极芯组的第二电极连接,且对应连接的第一电极和第二电极的连接部位容纳于通孔中；隔圈包括面对壳体的内表面的外周面，隔圈的外周面上形成有至少一个第一定位部，壳体的内表面形成有第二定位部，第一定位部与对应的第二定位部配合以将隔圈和壳体固定。

Description

一种电池、电池包及汽车
相关申请的交叉引用
本申请要求比亚迪股份有限公司于2020年05月18日提交的、发明名称为“一种电池、电池包及汽车”的、中国专利申请号“202010421323.3”的优先权。
技术领域
本申请涉及电池领域，尤其涉及一种电池、电池包及汽车。
背景技术
现有技术中，为提高电池的容量，在电池的壳体内串联有多个极芯，在电池使用过程中极芯间的连接部位容易发生扭曲、折断等；另外，在振动、颠簸情况下，多个极芯容易在壳体里窜动，极芯与极芯之间会发生相对位移，对极芯产生损伤，例如，集流体破损，隔膜打皱、极片上活性材料层脱落，电池的稳定性较差，也容易发生安全问题。
发明内容
本申请旨在至少解决现有技术中存在的技术问题之一。
为解决上述技术问题，本申请的技术方案是：
本申请第一方面提供一种电池，包括壳体和封装于所述壳体内的多个极芯组，所述极芯组之间串联，所述极芯组包括封装膜和至少一个极芯，所述至少一个极芯位于所述封装膜包围形成的容纳腔内；串联连接的两个所述极芯组之间设有隔圈，所述隔圈上设有通孔，所述极芯组包括第一电极和第二电极，所述第一电极和所述第二电极伸出所述封装膜外，串联连接的两个所述极芯组中的其中一个极芯组的第一电极与另一个极芯组的第二电极连接，且对应连接的第一电极和第二电极的连接部位容纳于所述通孔中；所述隔圈包括面对所述壳体内表面的外周面，所述隔圈的外周面上形成有至少一个第一定位部，所述壳体的内表面形成有与所述第一定位部一一对应的第二定位部，所述第一定位部与对应的所述第二定位部配合以将所述隔圈和所述壳体固定。
优选地，所述第一定位部为所述隔圈的外周面向所述隔圈的内部凹陷而形成的凹槽，所述第二定位部为所述壳体内表面上形成的凸起，所述凸起嵌入所述凹槽中。
优选地，所述第一定位部为所述隔圈的外周面上形成的凸起，所述第二定位部为所述壳体的内表面上形成的凹槽，所述凸起嵌入所述凹槽中。
优选地，串联连接的两个所述极芯组为相邻两个极芯组，所述隔圈位于所述相邻两个 极芯组之间。
优选地，所述隔圈包括第一嵌件和第二嵌件，所述第一嵌件和第二嵌件分别位于对应连接的第一电极和第二电极的连接部位的两侧，以共同夹持所述连接部位，所述第一嵌件和所述第二嵌件之间的空隙构成所述通孔。
优选地，所述第一嵌件和所述第二嵌件分别与所述极芯组粘结固定。
优选地，相邻两个所述极芯组之间的空隙填充有塑胶材料，以在相邻两个所述极芯组之间形成所述隔圈。
优选地，所述极芯组的外表面与所述壳体的内表面粘结固定。
本申请第二方面提供一种电池包，包括多个上述电池。
本申请第三方面提供一种汽车，包括上述电池包。
与现有技术相比，本申请的有益效果在于：
本申请中，通过在串联连接的两个极芯组之间设有隔圈，并使串联连接的两个极芯组的连接部位设置在隔圈内，由此利用隔圈可以更好地将各极芯组更好的固定，防止极芯组之间的窜动，保持极芯组之间连接的有效性地固定，并且还可增强连接部位的强度，从而可防止在电池使用过程中极芯组之间的连接部位发生扭曲、断裂等情况，提高极芯组之间连接的可靠性，此外，通过使隔圈的第一定位部与壳体上的第二定位部相互配合以将隔圈和壳体固定，可以进一步防止极芯组之间产生窜动，提高防窜动效果。
附图说明
图1为本申请一实施例中的电池去掉壳体之后的结构示意图。
图2为本申请一实施例中的电池的其中一个极芯组的结构示意图。
图3为本申请一实施例中的电池的结构示意图。
图4为本申请的极芯组与隔圈配合的装配示意图。
图5为本申请的极芯组与隔圈配合的结构示意图。
图6为本申请一实施例中的电池在VI-VI处的剖面示意图。
图7为图6在另一实施例中的剖面示意图。
图8为图6在另一实施例中的剖面示意图。
图9为本申请一实施例中的电池包的结构示意图。
图10为本申请一实施例的汽车的结构示意图。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或 类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，术语“长度”、“宽度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”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的限制。
此外，术语“第一”、“第二”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。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，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；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中的具体含义。
本申请提供了一种电池，包括壳体和封装于所述壳体内的多个极芯组，所述极芯组之间串联，所述极芯组包括封装膜和至少一个极芯，所述至少一个极芯位于所述封装膜包围形成的容纳腔内；串联连接的两个所述极芯组之间设有隔圈，所述隔圈上设有通孔，所述极芯组包括第一电极和第二电极，所述第一电极和所述第二电极伸出所述封装膜外，串联连接的两个所述极芯组中的其中一个极芯组的第一电极与另一个极芯组的第二电极连接，且对应连接的第一电极和第二电极的连接部位容纳于所述通孔中；所述隔圈包括面对所述壳体内表面的外周面，所述隔圈的外周面上形成有至少一个第一定位部，所述壳体的内表面形成有与所述第一定位部一一对应的第二定位部，所述第一定位部与对应的所述第二定位部配合以将所述隔圈和所述壳体固定。
与现有技术相比，本申请的有益效果在于：
本申请中，通过在串联连接的两个极芯组之间设有隔圈，并使串联连接的两个极芯组的连接部位设置在隔圈内，由此利用隔圈可以更好地将各极芯组更好的固定，防止极芯组之间的窜动，保持极芯组之间连接的有效性地固定，并且还可增强连接部位的强度， 从而可防止在电池使用过程中极芯组之间连接部位发生扭曲、断裂等情况，提高极芯组之间连接的可靠性，此外，通过使隔圈的第一定位部与壳体上的第二定位部相互配合以将隔圈和壳体固定，可以进一步防止极芯组之间产生窜动，提高防窜动效果。
请一并参阅图1、图2和图3，图1为本申请提供一实施例中的电池去掉壳体之后的结构示意图；图2为本申请一实施例中的电池的极芯组的结构示意图；图3为本申请提供的电池的结构示意图。所述电池100包括壳体10和封装于所述壳体10内的多个极芯组20。所述多个极芯组20之间串联。所述极芯组20包括封装膜201和至少一个极芯，所述至少一个极芯位于所述封装膜201包围形成的容纳腔内。串联连接的两个极芯组20之间设有隔圈30。请参考图4至图5，图4和图5为本申请的极芯组与隔圈配合的结构示意图。所述隔圈30上设有通孔301，所述极芯组20包括第一电极21和第二电极22，第一电极21和第二电极22中的其中一个为正电极，另一个为负电极。所述第一电极21和第二电极22伸出所述封装膜201外。串联连接的两个极芯组20中的其中一个极芯组20的第一电极21与另一个极芯组20的第二电极22相连接，且连接部位容纳于所述通孔301中。请参考图6，图6为本申请提供的电池在VI-VI处的剖面示意图。所述隔圈30包括面对壳体10内表面的外周面302，所述隔圈30的外周面302上形成有至少一个第一定位部303。所述壳体10的内表面101形成有与所述第一定位部303一一对应的第二定位部102。所述第一定位部303与对应的所述第二定位部102配合以将所述隔圈30和壳体10固定。
其中，极芯组20之间的连接部位是指两个极芯组20中的其中一个极芯组20的第一电极21与另一个极芯组20的第二电极22相连接的连接部位，由此，通过在串联连接的两个极芯组20之间设有隔圈30，并使串联连接的两个极芯组20的连接部位设置在隔圈30内，由此利用隔圈30可以更好地将各极芯组20更好的固定，防止极芯组20之间的窜动，保持极芯组20之间连接的有效性地固定，并且还可增强连接部位的强度，从而可防止在电池使用过程中极芯组20之间连接部位发生扭曲、断裂等情况，提高极芯组20之间连接的可靠性，此外，通过使隔圈30的第一定位部303与壳体10上的第二定位部102相互配合以将隔圈30和壳体10固定，可以进一步防止极芯组20之间产生窜动，提高防窜动效果。
在本申请的一些实例中，所述电池100的长度沿第一方向L延伸，所述极芯组20的长度沿第一方向L延伸，多个所述极芯组20沿第一方向L排列。另外，极芯组20的第一电极21和第二电极22设置在极芯组20沿第一方向L的相对两端，并且，串联连接的两个极芯组20为相邻两个极芯组20，即本申请实施例中，相邻两个极芯组20为串联。因此，多个极芯组20采用“头对头”的排布方式，此排布方式可以较为方便 地实现极芯组20之间的两两串联，连接结构简单。另外该种排布方式可以较为方便的制造长度较长的电池100，由此在将电池100安装进电池包外壳内时，可以不需要设置横梁和纵梁等支撑结构，而是利用电池100本身的壳体10作支撑而将电池100直接安装在电池包外壳上，由此可以节省电池包内部空间，提高电池包的体积利用率，且有利于降低电池包的重量。
多个极芯组20串联时，极芯组20之间的连接部位成了整个电池的薄弱部，在电池使用过程中容易发生扭曲或断裂等，从而导致连接失效，同时由于电池内串联了多个极芯组20，增加电池在第一方向L上窜动的风险。所以，本申请中，通过在串联连接的两个极芯组20之间设有隔圈30，两个极芯组20的连接部位设置在隔圈30的通孔301内，这样可增强连接部位的强度，同时，隔圈30的第一定位部303与壳体10上的第二定位部102相互配合以将各极芯组20更好的固定，防止极芯组20之间在第一方向L上发生窜动，保持极芯组20之间连接的有效性，增加电池100的机械强度，防止电池100在使用过程中发生扭曲、断裂等情况。
在一些实施例中，壳体10为金属壳体。比如，铝壳；当然，根据需要也可以选择其他金属制成。从而，所述壳体10具有足够的强度，避免被撞坏或者变形，提高电池100的安全性。
在一些实施例中，所述封装膜201为铝塑复合膜或高分子材料复合膜。所述极芯组20的第一电极21和第二电极22伸出封装膜201外。即本申请实施例中，隔圈30是设置在封装膜201之外的隔圈30，通过膜外设隔圈30以提高极芯组20之间连接的可靠性。
本申请中所提到的极芯，也可以理解为动力电池领域常用的极芯，极芯以及极芯组20为电池100的壳体10内部的组成部分，而不能被理解为电池本身；极芯可以是卷绕形成的极芯，极芯一般是指未完全密封的组件。因而，在本申请提到的电池，不能因其包含多个极芯，而将其简单的理解为电池模组或电池组。在本申请中，极芯组20可以是由一个单独的极芯组成；也可以包括多个极芯，且多个极芯并联连接，构成所述极芯组20。
在一些实施例中，串联连接的两个极芯组20为相邻两个极芯组20，所述隔圈30位于相邻两个极芯组20之间。
从而，每相邻的两个极芯组20之间都设置有隔圈30，隔圈30可以间隔相邻两个极芯组20，隔圈30与壳体10相互定位，有利于进一步防止极芯组20在其第一方向L上发生窜动。
在一些实施例中，请参考图6，所述第一定位部303为所述隔圈30的外周面302 向所述隔圈30的内部凹陷而形成的凹槽；所述第二定位部102为所述壳体10的内表面101上形成的凸起，所述凸起嵌入所述凹槽中以将所述隔圈30和壳体10固定。
从而，通过直接在隔圈30上形成凹槽，以及直接在壳体10上形成凸起，以通过所述壳体10的凸起与所述隔圈30上的凹槽相互配合实现隔圈30和壳体10之间的固定和定位，既可以进一步防止极芯组20的窜动，又节省了电池100的占用空间。
其中，如图6所示，隔圈30可以是与壳体10的最大面积的表面(也可称为“大面”)进行连接，具体地，电池100的厚度沿第二方向W延伸，其中，第二方向W与第一方向L相垂直。每个电池100的壳体10包括在第二方向W相对两侧的第一侧面11和第二侧面12，第一侧面11和第二侧面12为电池100的最大表面。其中，在壳体10的第一侧面11和第二侧面12上均设置有第二定位部102，隔圈30的与第一侧面11和第二侧面12对应的内周面上设置有第一定位部303，第一定位部303和第二定位部102一一对应，以相应配合实现隔圈30和壳体10的固定。
在一些实施例中，请参考图7，所述第一定位部303也可以为所述隔圈30的外周面302上形成的凸起，所述第二定位部102为所述壳体10的内表面101上形成的凹槽，所述凸起嵌入所述凹槽中以将所述隔圈30和壳体10固定。
从而，通过直接在隔圈30上形成凸起，以及直接在壳体10的内表面101上形成凹槽，以通过所述壳体10的凹槽与所述隔圈30上的凸起相互配合实现隔圈30和壳体10之间的固定和定位，既可以进一步防止极芯组20的窜动，又节省了电池100的占用空间。
在一些实施例中，请参考图8，所述第一侧面11上的第二定位部102为所述壳体10的内表面101上形成的凸起，所述第一定位部303为与所述凸起对应的在所述隔圈30的外周面302上形成的凹槽，凸起与凹槽相配合。所述第二侧面12上的第二定位部102为所述壳体10的内表面101上形成的凹槽，第一定位部303为与所述凸起对应的且设置在所述隔圈30的外周面302上形成的凸起，凸起与凹槽相配合。
从而，电池100的壳体10的第一侧面11的第二定位部102为凸起，对应的第一定位部303为凹槽，第二侧面12上的第二定位部102为凹槽，对应的第一定位部303为凸起，凸起与凹槽配合，即实现隔圈30和壳体10之间的固定和定位，又实现壳体10与壳体10之间的固定与定位，既可以进一步防止极芯组20的窜动，又可以放置相邻电池100的壳体10之间的相互移动。
在一些实施例中，请参考图4和图5，所述隔圈30为分体式的隔圈，通过将隔圈预先成型，然后再安装到极芯组20之间。其中，隔圈30包括第一嵌件31和第二嵌件32，所述第一嵌件31和第二嵌件32分别位于对应连接的第一电极21和第二电极22的连 接部位的两侧，以共同夹持所述连接部位，所述第一嵌件31和第二嵌件32之间的空隙构成所述通孔301，即第一嵌件31和第二嵌件32分别位于极芯组20之间的连接部位的两侧，且第一嵌件31和第二嵌件32与该连接部位抵压接触，以共同夹持连接部位，并实现将连接部位固定在隔圈30中，连接部位在隔圈30中所占的空间即为隔圈30上的通孔301。
所述第一嵌件31和第二嵌件32是事先成型好之后再进行组装，例如，在组装时，可以在极芯组20之间进行连接之后，将第一嵌件31和第二嵌件32分别固定极芯组20间的连接部位两侧，以实现隔圈30与极芯组20的装配。
在一些实施例中，所述第一嵌件31和第二嵌件32分别与极芯组20粘结固定，即在隔圈30和极芯组20之间的空隙可以设置黏胶层，以将隔圈30和极芯组20相固定，从而，有利于将各极芯组20进行固定，能够更好地防止极芯组20间发生窜动，保证极芯组20间的连接，提高电池的安全性。
在一些实施例中，所述第一嵌件31和第二嵌件32可以通过卡扣的形式相互固定，或者所述第一嵌件31和所述第二嵌件32也可以是相互粘结固定，或者还可以将第一嵌件31和第二嵌件32分别通过粘结的方式与极芯组20间的连接部位粘结固定。
从而，第一嵌件31和第二嵌件32可以相互定位，第一嵌件31和第二嵌件32的配合效果更好，更有利于其它元件的组装。
在一些实施例中，相邻两个极芯组20之间的空隙填充有塑胶材料，以在相邻两个极芯组20之间形成所述隔圈30。即，所述隔圈30可以在相邻的两个极芯组20连接好之后，通过直接在两个极芯组20之间填充塑胶材料，以在相邻两极芯组20之间形成所述隔圈30，从而使得相邻两极芯组20的连接部位位于隔圈30内。
在一些实施例中，所述极芯组20的外表面与所述壳体10的内表面101粘结固定。从而，可以进一步将极芯组20进行固定，防止所述极芯组20间发生窜动。
在一些实施例中，电池100大体为长方体，电池100具有长度L、厚度W和高度H，长度L大于高度H，高度H大于厚度W。其中，电池100的长度为400-2500mm。电池100的长度与高度的比值为4-21。
需要说明的是，电池100大体为长方体，可以理解为，电池100可为长方体形、正方体形，或局部存在异形，但大致为长方体形、正方体形；或部分存在缺口、凸起、倒角、弧度、弯曲但整体呈近似长方体形、正方体形。
本申请还提供了一种电池模组，包括多个本申请提供的电池100。
本申请还提供了一种电池包，包括多个本申请提供的电池100或者本申请提供的电池模组。
请参阅图9，本申请提供的电池包200，包括托盘22和排布在托盘22上的电池100。
如图10所示，本申请还提供了一种汽车300，包括本申请提供的电池模组或电池包200。
综上所述可知本申请乃具有以上所述的优良特性，得以令其在使用上，增进以往技术中所未有的效能而具有实用性，成为一极具实用价值的产品。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的思想和原则之内所作的任何修改、等同替换或改进等，均应包含在本申请的保护范围之内。在本申请的描述中，需要理解的是，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的限制。
此外，术语“第一”、“第二”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。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，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；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中的具体含义。
在本申请中，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。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任 一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种电池，其特征在于，包括壳体和封装于所述壳体内的多个极芯组，所述极芯组之间串联，所述极芯组包括封装膜和至少一个极芯，所述至少一个极芯位于所述封装膜包围形成的容纳腔内；
    串联连接的两个所述极芯组之间设有隔圈，所述隔圈上设有通孔，所述极芯组包括第一电极和第二电极，所述第一电极和所述第二电极伸出所述封装膜外，串联连接的两个所述极芯组中的其中一个极芯组的第一电极与另一个极芯组的第二电极连接，且对应连接的第一电极和第二电极的连接部位容纳于所述通孔中；
    所述隔圈包括面对所述壳体内表面的外周面，所述隔圈的外周面上形成有至少一个第一定位部，所述壳体的内表面形成有与所述第一定位部一一对应的第二定位部，所述第一定位部与对应的所述第二定位部配合以将所述隔圈和所述壳体固定。
  2. 根据权利要求1所述的电池，其特征在于，所述第一定位部为所述隔圈的外周面向所述隔圈的内部凹陷而形成的凹槽，所述第二定位部为所述壳体内表面上形成的凸起，所述凸起嵌入所述凹槽中。
  3. 根据权利要求1或2所述的电池，其特征在于，所述第一定位部为所述隔圈的外周面上形成的凸起，所述第二定位部为所述壳体的内表面上形成的凹槽，所述凸起嵌入所述凹槽中。
  4. 根据权利要求1-3中任意一项所述的电池，其特征在于，串联连接的两个所述极芯组为相邻两个极芯组，所述隔圈位于所述相邻两个极芯组之间。
  5. 根据权利要求4所述的电池，其特征在于，所述隔圈包括第一嵌件和第二嵌件，所述第一嵌件和第二嵌件分别位于对应连接的第一电极和第二电极的连接部位的两侧，以共同夹持所述连接部位，所述第一嵌件和所述第二嵌件之间的空隙构成所述通孔。
  6. 根据权利要求5所述的电池，其特征在于，所述第一嵌件和所述第二嵌件分别与所述极芯组粘结固定。
  7. 根据权利要求4-6中任意一项所述的电池，其特征在于，相邻两个所述极芯组之间的空隙填充有塑胶材料，以在相邻两个所述极芯组之间形成所述隔圈。
  8. 根据权利要求1-7中任意一项所述的电池，其特征在于，所述极芯组的外表面与所述壳体的内表面粘结固定。
  9. 一种电池包，其特征在于，包括多个如权利要求1-8任意一项所述的电池。
  10. 一种汽车，其特征在于，包括权利要求9所述的电池包。
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