WO2020103959A1 - Pouch cell for battery - Google Patents

Pouch cell for battery

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Publication number
WO2020103959A1
WO2020103959A1 PCT/CN2020/070762 CN2020070762W WO2020103959A1 WO 2020103959 A1 WO2020103959 A1 WO 2020103959A1 CN 2020070762 W CN2020070762 W CN 2020070762W WO 2020103959 A1 WO2020103959 A1 WO 2020103959A1
Authority
WO
WIPO (PCT)
Prior art keywords
tab
soft
plastic film
film layer
packed
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/CN2020/070762
Other languages
French (fr)
Chinese (zh)
Inventor
李良彬
肖海燕
吴健
刘晓伟
董水金
冯全生
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.)
Xinyu Ganfeng Electronics Co Ltd
Original Assignee
Xinyu Ganfeng Electronics 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 Xinyu Ganfeng Electronics Co Ltd filed Critical Xinyu Ganfeng Electronics Co Ltd
Publication of WO2020103959A1 publication Critical patent/WO2020103959A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to an electric core, in particular to a soft-packed electric core for batteries.
  • the positive and negative pole tabs are arranged on both sides or the same side of the battery core.
  • the battery core is not suitable for use in a small volume space, and Due to the limitation of the arrangement of the negative electrode tab, the connection method between the battery cell and other components will be greatly restricted.
  • the present invention is completed to solve the shortcomings in the prior art.
  • the object of the present invention is to provide a soft-packed battery core for a battery, which has the advantage that the positions of the first tab and the second tab can be arranged at any position
  • the polymer battery core is convenient to connect with other parts.
  • a soft-packed battery core for a battery according to the present invention includes a soft-packed battery core body, a first pole ear, and a second pole ear.
  • the soft-packed battery core body is cylindrical or rectangular, and the soft-packed battery
  • a winding member wound around the center is provided in the core body, and both ends of the first tab and the second tab are fixedly connected to the winding member, and the first tab and the first tab
  • Both the upper and lower surfaces of the dipole ear are fixedly connected to the outer periphery of the soft-packed battery core body through the tab ear glue and extend radially outward from the outer periphery of the soft-packed battery core body.
  • the soft-pack battery cell of the present invention can also be:
  • the first tab and the second tab extend outward from the upper or middle or lower portion of the outer periphery of the soft-packed cell body.
  • the body of the soft-packed battery core includes an upper aluminum plastic film layer, a lower aluminum plastic film layer and an electrolyte.
  • the upper aluminum plastic film layer and the edge of the lower aluminum plastic film layer are fixedly connected by sealing hot pressing.
  • the electrolyte is located in the cavity formed by the upper aluminum plastic film layer and the lower aluminum plastic film layer, and both the upper and lower surfaces of the end of the first pole ear are bonded to the upper aluminum plastic film layer through the pole ear glue And on the lower aluminum plastic film layer.
  • the outer periphery of the upper aluminum-plastic film layer extends radially outward to provide an upper extension layer, and the outer periphery of the lower aluminum-plastic film layer extends radially outward to provide a lower extension layer, the upper extension layer and the lower extension
  • the edges of the layers are fixedly connected by sealing hot pressing.
  • the first pole ear and the second pole ear are symmetrically arranged on the outer circumference of the body of the soft-packed battery core.
  • the width of the first pole ear and the second pole ear are both greater than 2 mm.
  • the first pole ear and the second pole ear are both made of metallic nickel material.
  • a soft-packed battery core for a battery according to the present invention includes a soft-packed battery core body, a first pole ear, and a second pole ear.
  • the soft-packed battery core body is cylindrical or rectangular, and the soft-packed battery
  • a winding member wound around the center is provided in the core body, and both ends of the first tab and the second tab are fixedly connected to the winding member, and the first tab and the first tab
  • Both the upper and lower surfaces of the dipole ear are fixedly connected to the outer periphery of the soft-packed battery core body through the tab ear glue and extend radially outward from the outer periphery of the soft-packed battery core body.
  • the shape of the body of the soft pack cell is cylindrical, and when the body of the soft pack cell is assembled into other parts, it takes up less space for other parts and saves space for other parts.
  • the shape of the body of the soft-pack battery cell may also be a rectangular parallelepiped.
  • the free ends of the first pole lug and the free end of the second pole lug extend from the winding member provided inside the body of the soft-packed cell, and the first pole lug and the second pole lug can be arranged symmetrically from both sides of the winding lug It can also be set asymmetrically.
  • the winding part is wound inside the body of the soft-packed battery core one by one, which is formed by winding the positive pole piece, the separator and the negative pole piece.
  • the separator plays a role in preventing the short circuit between the first tab and the second tab .
  • the first pole lug is connected to the positive (negative) pole piece and the second pole lug is connected to the negative (positive) pole piece.
  • the specific position can be set according to the actual situation to facilitate the connection between the soft pack battery and other parts.
  • the specific positions of the first pole ear and the second pole ear can be set according to the actual situation, which is convenient for the connection between the soft pack cell body and other parts.
  • the first tab can be positive or negative; the second tab can be positive or negative.
  • a soft-pack battery cell of the present invention has the advantages that: the positions of the first tab and the second tab can be arranged at any position, and the polymer cell is connected with other parts Convenience.
  • FIG. 1 is a three-dimensional schematic view of a soft-pack battery core for a battery of the present invention.
  • FIG. 2 is a schematic side view of FIG. 1.
  • FIG. 3 is a three-dimensional schematic view of a soft-packed battery core for batteries of the present invention.
  • FIG. 4 is a schematic perspective cross-sectional view of a soft-pack battery core for a battery of the present invention.
  • a soft-packed battery core for a battery of the present invention please refer to the related drawings of FIGS. 1 to 4, including a soft-packed battery core body 1, a first pole tab 2 and a second pole tab 3,
  • the core body 1 is in the shape of a cylinder or a rectangular parallelepiped.
  • the soft-packed battery core body 1 is provided with a winding member wound around the center. The ends of the first tab 2 and the second tab 3 are fixedly connected. On the winding member, both the upper and lower surfaces of the first tab 2 and the second tab 3 are fixedly connected to the outer periphery of the soft-pack battery core body 1 through the tab glue 4 and are electrically connected from the soft pack
  • the outer periphery of the core body 1 extends radially outward.
  • the outer shape of the soft-pack cell body 1 is cylindrical, and when the soft-pack cell body 1 is assembled into other components, it occupies less space for other components and saves space for other components.
  • the outer shape of the flexible cell body 1 may also be a rectangular parallelepiped.
  • the free ends of the first pole lug 2 and the second pole lug 3 protrude from the winding member provided inside the soft pack cell body 1, and the first pole lug 2 and the second pole lug 3 can be symmetrically arranged from the winding
  • the two sides of the winding part can also be extended asymmetrically.
  • the winding member is wound around the soft-packed battery core 1 one by one, which is formed by winding the positive pole piece, the separator and the negative pole piece, and the separator serves to prevent the first tab 2 and the second tab 3 from being short-circuited The role.
  • the first pole lug 2 is connected to the positive (negative) pole piece and the second pole lug 3 is connected to the negative (positive) pole piece.
  • the specific position can be set according to the actual situation, which is convenient for the soft pack cell body 1 and other parts Connection, the first tab 2 is connected to the positive (negative) pole piece and the second tab 3 is connected to the negative (positive) pole piece, the specific positions of the first tab 2 and the second tab 3 can be set according to the actual situation , To facilitate the connection between the soft pack cell body 1 and other components.
  • the first tab 2 may be a positive electrode or a negative electrode; the second tab 3 may be a positive electrode or a negative electrode.
  • the first and second tabs 2 are bonded to the upper and lower surfaces of the portion of the body of the soft-packed cell body 1 that are bonded to the tab ear glue 4, and the top and bottom faces of the tab ear glue 4 are adhesive.
  • the first tab 2 passes through the tab
  • the glue 4 is adhered to the outer periphery of the soft cell body 1 and extends outward from the outer periphery of the soft cell body 1; the second tab 3 is adhered to the outer periphery of the soft cell body 1 by the tab glue 4 and is electrically The outer periphery of the core body 1 extends outward.
  • the provision of the tab glue 4 prevents the contact between the first tab 2 and the second tab 3 and the soft-packed cell body 1 for insulation, and also connects the first tab 2 and the second tab 3 to The outer periphery of the soft pack cell body 1.
  • a soft-pack battery cell of the present invention has the advantages that: the positions of the first tab 2 and the second tab 3 can be arranged at any position, and the polymer cell and other zero Components are easy to connect.
  • the first pole ear 2 and the second pole ear 3 extends outward from the upper or middle or lower portion of the outer periphery of the soft-packed battery body 1.
  • the first tab 2 and the second tab 3 extend radially outward from the upper or middle or lower portion of the outer periphery of the soft-packed cell body 1, that is, according to the different needs of the soft-packed cell, the first The soft-packed cells of the first pole ear 2 and the second pole ear 3.
  • the soft-packed battery cell body 1 may include an aluminum plastic film layer 11.
  • the lower aluminum plastic film layer 12 and the electrolyte, the upper aluminum plastic film layer 11 and the edge of the lower aluminum plastic film layer 12 are fixedly connected by sealing hot pressing, and the electrolyte is located on the upper aluminum plastic film
  • the layer 11 and the lower aluminum-plastic film layer 12 surround the cavity formed, and the upper and lower surfaces of the end of the first tab 2 are bonded to the upper aluminum-plastic film layer 11 and the lower through the tab glue 4 On the aluminum-plastic film layer 12.
  • a cavity is formed between the upper aluminum-plastic film layer 11 and the lower aluminum-plastic film layer 12 and is formed in a cylindrical shape as a whole, and the cavity is filled with electrolyte.
  • the upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 are wrapped around each other, and the edges of the upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 are connected by hot pressing, so that the connection between the two is more tight. Hold electrolyte.
  • the upper surface of the end of the first tab 2 is adhesively connected to the upper aluminum plastic film layer 11 by the tab glue 4; the lower surface of the end of the first tab 1 is adhesively connected to the lower aluminum plastic film layer 12 by the tab glue 4 so that The first pole lug 2 is adhesively connected to the upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 and simultaneously plays an insulating role.
  • the upper surface of the end of the second tab 3 is adhesively connected to the upper aluminum-plastic film layer 11 by the tab glue 4; the lower surface of the end of the second tab 3 is adhesively connected to the lower aluminum-plastic film layer 12 by the tab glue 4 so that The second tab 3 is adhesively connected to the upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 and simultaneously plays an insulating role.
  • both the upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 need a mold to punch out the shape of a pit for accommodating electrolyte, etc. .
  • the first tab 2 and the second tab 3 are located on the upper part of the soft-packed cell body 1, only the lower aluminum plastic film layer 12 can be punched out of the pit shape with a mold, which simplifies the process.
  • the first tab 2 and the second tab 3 are located at the lower part of the soft-packed battery core body 1, it is only necessary to punch the upper aluminum-plastic film layer 11 out of the pit shape with a mold, which simplifies the process.
  • a further preferred technical solution is that: the outer periphery of the upper aluminum-plastic film layer 11 extends radially outward with an upper extension layer, and the outer periphery of the lower aluminum-plastic film layer 12 extends radially outward with a lower extension layer.
  • the edges of the upper extension layer and the lower extension layer are fixedly connected by sealing hot pressing.
  • the upper extension layer is formed by the outer edges of the upper aluminum plastic film layer 11 extending outward
  • the lower extension layer is formed by the outer edges of the lower aluminum plastic film layer 12 extending outward
  • the upper extension layer and the lower extension layer are fixed by hot pressing
  • the connection enables the upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 to be more tightly bonded together to prevent leakage of electrolyte.
  • the first pole ear 2 and the second pole ear 3 Symmetrically arranged on the outer circumference of the body of the soft-packed electric core.
  • the first tab 2 and the second tab 3 are symmetrically disposed on the winding member, that is, the first tab 2 and the second tab 3 are disposed at a fixed connection between the upper extension layer and the lower extension layer.
  • the first pole ear 2 and the second pole ear 3 The width is greater than 2mm. In this way, the width of the first tab 2 and the second tab 3 is greater than 2 mm, which is convenient for welding and fixing the first tab 2 and the second tab 3 with other components, such as when a polymer battery is used in the button battery, The first pole ear 2 and the second pole ear 3 are fixedly connected in the button battery.
  • the first pole ear 2 and the second pole ear 3 are made of nickel metal material.
  • both the first tab 2 and the second tab 3 are made of metallic nickel, which facilitates the welding connection between the first tab 2 and the second tab 3 and other components.
  • the first tab 2 and the second tab 3 are fixedly connected in the button battery.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

Disclosed is a pouch cell for a battery, the pouch cell comprising a pouch cell body, a first lug, and a second lug, wherein the pouch cell body is in the shape of a cylinder or a cube, a winding piece is wound at the center inside the pouch cell body, ends of both the first lug and the second lug are fixedly connected to the winding piece, and upper and lower surfaces of both the first lug and the second lug are fixedly connected to the periphery of the pouch cell body by means of lug tapes and radially extend outwards from the periphery of the pouch cell body. According to the pouch cell for a battery of the present invention, the positions of the first lug and the second lug can be set as any position, such that a polymer cell can be conveniently connected to other parts.

Description

一种用于电池的软包电芯A soft-packed battery core for battery 技术领域Technical field

本发明涉及一种电芯，特别是涉及一种用于电池的软包电芯。The invention relates to an electric core, in particular to a soft-packed electric core for batteries.

背景技术Background technique

现有的电芯大部分平面形状呈方形，正极极耳和负极极耳设置在电芯的两侧或者同侧，同时，电芯不适合用在体积空间小的地方，且由于正极极耳和负极极耳布置的限制，电芯与其它零部件之间的连接方式会受到很大的限制。Most of the existing batteries have a square shape, and the positive and negative pole tabs are arranged on both sides or the same side of the battery core. At the same time, the battery core is not suitable for use in a small volume space, and Due to the limitation of the arrangement of the negative electrode tab, the connection method between the battery cell and other components will be greatly restricted.

发明内容Summary of the invention

本发明是为了解决现有技术中的不足而完成的，本发明的目的是提供一种用于电池的软包电芯，其优点是第一极耳和第二极耳位置可以任意位置布置，聚合物电芯与其他零部件连接方便。The present invention is completed to solve the shortcomings in the prior art. The object of the present invention is to provide a soft-packed battery core for a battery, which has the advantage that the positions of the first tab and the second tab can be arranged at any position The polymer battery core is convenient to connect with other parts.

本发明的一种用于电池的软包电芯，包括软包电芯本体、第一极耳和第二极耳，所述软包电芯本体呈圆柱状或方体，所述软包电芯本体内设置有卷设于中心的卷绕件，所述第一极耳和所述第二极耳端部均固定连接于所述卷绕件上，所述第一极耳和所述第二极耳上下表面均通过极耳胶固定连接于所述软包电芯本体外周且从所述软包电芯本体外周径向向外延伸。A soft-packed battery core for a battery according to the present invention includes a soft-packed battery core body, a first pole ear, and a second pole ear. The soft-packed battery core body is cylindrical or rectangular, and the soft-packed battery A winding member wound around the center is provided in the core body, and both ends of the first tab and the second tab are fixedly connected to the winding member, and the first tab and the first tab Both the upper and lower surfaces of the dipole ear are fixedly connected to the outer periphery of the soft-packed battery core body through the tab ear glue and extend radially outward from the outer periphery of the soft-packed battery core body.

本发明的一种用于电池的软包电芯还可以是：The soft-pack battery cell of the present invention can also be:

所述第一极耳和所述第二极耳从所述软包电芯本体外周上部或者中部或下部向外延伸。The first tab and the second tab extend outward from the upper or middle or lower portion of the outer periphery of the soft-packed cell body.

所述软包电芯本体包括上铝塑膜层、下铝塑膜层和电解液，所 述上铝塑膜层和所述下铝塑膜层边缘之间通过密封热压固定连接，所述电解液位于所述上铝塑膜层和所述下铝塑膜层围设形成的腔体内，所述第一极耳端部上下表面均通过极耳胶粘接于所述上铝塑膜层和所述下铝塑膜层上。The body of the soft-packed battery core includes an upper aluminum plastic film layer, a lower aluminum plastic film layer and an electrolyte. The upper aluminum plastic film layer and the edge of the lower aluminum plastic film layer are fixedly connected by sealing hot pressing. The electrolyte is located in the cavity formed by the upper aluminum plastic film layer and the lower aluminum plastic film layer, and both the upper and lower surfaces of the end of the first pole ear are bonded to the upper aluminum plastic film layer through the pole ear glue And on the lower aluminum plastic film layer.

所述上铝塑膜层外周沿径向向外延伸设置有上延伸层，所述下铝塑膜层外周沿径向向外延伸设置有下延伸层，所述上延伸层和所述下延伸层边缘之间通过密封热压固定连接。The outer periphery of the upper aluminum-plastic film layer extends radially outward to provide an upper extension layer, and the outer periphery of the lower aluminum-plastic film layer extends radially outward to provide a lower extension layer, the upper extension layer and the lower extension The edges of the layers are fixedly connected by sealing hot pressing.

所述第一极耳和所述第二极耳对称设置于所述软包电芯本体外圆周上。The first pole ear and the second pole ear are symmetrically arranged on the outer circumference of the body of the soft-packed battery core.

所述第一极耳和所述第二极耳宽度均大于2mm。The width of the first pole ear and the second pole ear are both greater than 2 mm.

所述第一极耳和所述第二极耳均由金属镍材料制成。The first pole ear and the second pole ear are both made of metallic nickel material.

本发明的一种用于电池的软包电芯，包括软包电芯本体、第一极耳和第二极耳，所述软包电芯本体呈圆柱状或方体，所述软包电芯本体内设置有卷设于中心的卷绕件，所述第一极耳和所述第二极耳端部均固定连接于所述卷绕件上，所述第一极耳和所述第二极耳上下表面均通过极耳胶固定连接于所述软包电芯本体外周且从所述软包电芯本体外周径向向外延伸。这样，软包电芯本体外形呈圆柱状，当软包电芯本体装配到其他零部件内，占用其他零部件更小的空间，节省其他零部件的空间。软包电芯本体外形也可以为方体。第一极耳的自由端和第二极耳的自由端从软包电芯本体内部设置的卷绕件上伸出，第一极耳和第二极耳可以对称设置从卷绕件两侧伸出，也可以不对称设置。卷绕件一圈一圈绕设在软包电芯本体内部，其由正极极片、隔膜和负极极片卷绕形成的，，隔膜起到防止第一极耳和第二极耳短路的作用。第一极耳连接在正(负)极片上和第二极耳连接在负(正)极片上，具体位置可以根据实际情况进行设置，方便软包电芯与其他零部件之间的连接，第一极耳和第二极耳具体位置可以根据实际情况进行设置，方便软包电芯本体与其他零部件之间的连接。第一极耳可以为 正极或负极；第二极耳可以为正极或负极。第一极耳从软包电芯本体中心伸出部分的上表面和下表面均粘接极耳胶，极耳胶上下表面均有粘接性，第一极耳通过极耳胶粘接在软包电芯本体外周且从软包电芯本体外周向外延伸；第二极耳通过极耳胶粘接在软包电芯本体外周且从软包电芯本体外周向外延伸。通过设置极耳胶，杜绝第一极耳和第二极耳与软包电芯本体的接触，起到绝缘作用，同时也将第一极耳和第二极耳连接在软包电芯本体外周。本发明的一种用于电池的软包电芯，相对于现有技术而言具有的优点是：第一极耳和第二极耳位置可以任意位置布置，聚合物电芯与其他零部件连接方便。A soft-packed battery core for a battery according to the present invention includes a soft-packed battery core body, a first pole ear, and a second pole ear. The soft-packed battery core body is cylindrical or rectangular, and the soft-packed battery A winding member wound around the center is provided in the core body, and both ends of the first tab and the second tab are fixedly connected to the winding member, and the first tab and the first tab Both the upper and lower surfaces of the dipole ear are fixedly connected to the outer periphery of the soft-packed battery core body through the tab ear glue and extend radially outward from the outer periphery of the soft-packed battery core body. In this way, the shape of the body of the soft pack cell is cylindrical, and when the body of the soft pack cell is assembled into other parts, it takes up less space for other parts and saves space for other parts. The shape of the body of the soft-pack battery cell may also be a rectangular parallelepiped. The free ends of the first pole lug and the free end of the second pole lug extend from the winding member provided inside the body of the soft-packed cell, and the first pole lug and the second pole lug can be arranged symmetrically from both sides of the winding lug It can also be set asymmetrically. The winding part is wound inside the body of the soft-packed battery core one by one, which is formed by winding the positive pole piece, the separator and the negative pole piece. The separator plays a role in preventing the short circuit between the first tab and the second tab . The first pole lug is connected to the positive (negative) pole piece and the second pole lug is connected to the negative (positive) pole piece. The specific position can be set according to the actual situation to facilitate the connection between the soft pack battery and other parts. The specific positions of the first pole ear and the second pole ear can be set according to the actual situation, which is convenient for the connection between the soft pack cell body and other parts. The first tab can be positive or negative; the second tab can be positive or negative. The upper and lower surfaces of the first pole lugs protruding from the center of the soft-packed cell body are bonded to the lug glue, the upper and lower surfaces of the lug glue are adhesive, and the first pole lug is bonded to the soft The outer periphery of the packaged cell body extends outward from the outer periphery of the soft package cell body; the second tab is adhered to and extends outward from the outer periphery of the soft package cell body through the tab glue. Through the provision of the tab glue, the contact between the first tab and the second tab and the body of the soft-packed cell is prevented to play an insulating role, and the first tab and the second tab are also connected to the periphery of the body of the soft-packed cell . Compared with the prior art, a soft-pack battery cell of the present invention has the advantages that: the positions of the first tab and the second tab can be arranged at any position, and the polymer cell is connected with other parts Convenience.

附图说明BRIEF DESCRIPTION

图1本发明一种用于电池的软包电芯立体示意图。FIG. 1 is a three-dimensional schematic view of a soft-pack battery core for a battery of the present invention.

图2是图1的侧面示意图。FIG. 2 is a schematic side view of FIG. 1.

图3本发明一种用于电池的软包电芯立体示意图。FIG. 3 is a three-dimensional schematic view of a soft-packed battery core for batteries of the present invention.

图4本发明一种用于电池的软包电芯立体剖面示意图。FIG. 4 is a schematic perspective cross-sectional view of a soft-pack battery core for a battery of the present invention.

图号说明Description of drawing number

1、软包电芯本体；11、上铝塑膜层；12、下铝塑膜层；2、第一极耳；3、第二极耳；4、极耳胶。1. Soft-packed battery core body; 11. Upper aluminum-plastic film layer; 12. Lower aluminum-plastic film layer; 2. First pole ear; 3. Second pole ear; 4. Extreme ear glue.

具体实施方式detailed description

下面结合附图的图1至图4对本发明的一种用于电池的软包电芯作进一步详细说明。The soft-packed battery core for batteries of the present invention will be further described in detail below with reference to FIGS. 1 to 4 of the accompanying drawings.

本发明的一种用于电池的软包电芯，请参考图1至图4相关各图，包括软包电芯本体1、第一极耳2和第二极耳3，所述软包电芯本体1呈圆柱状或方体，所述软包电芯本体1内设置有卷设于中心的卷绕件，所述第一极耳2和所述第二极耳3端部均固定连接于所述卷绕件上，所述第一极耳2和所述第二极耳3上下表面均通过极耳胶4固定 连接于所述软包电芯本体1外周且从所述软包电芯本体1外周径向向外延伸。这样，软包电芯本体1外形呈圆柱状，当软包电芯本体1装配到其他零部件内，占用其他零部件更小的空间，节省其他零部件的空间。软包电芯本体1外形也可以为方体。第一极耳2的自由端和第二极耳3的自由端从软包电芯本体1内部设置的卷绕件上伸出，第一极耳2和第二极耳3可以对称设置从卷绕件两侧伸出，也可以不对称设置。卷绕件一圈一圈绕设在软包电芯本体1内部，其由正极极片、隔膜和负极极片卷绕形成的，隔膜起到防止第一极耳2和第二极耳3短路的作用。第一极耳2连接在正(负)极片上和第二极耳3连接在负(正)极片上，具体位置可以根据实际情况进行设置，方便软包电芯本体1与其他零部件之间的连接，第一极耳2连接在正(负)极片上和第二极耳3连接在负(正)极片上，第一极耳2和第二极耳3具体位置可以根据实际情况进行设置，方便软包电芯本体1与其他零部件之间的连接。第一极耳2可以为正极或负极；第二极耳3可以为正极或负极。第一极耳2从软包电芯本体1中心伸出部分的上表面和下表面均粘接极耳胶4，极耳胶4上下表面均有粘接性，第一极耳2通过极耳胶4粘接在软包电芯本体1外周且从软包电芯本体1外周向外延伸；第二极耳3通过极耳胶4粘接在软包电芯本体1外周且从软包电芯本体1外周向外延伸。通过设置极耳胶4，杜绝第一极耳2和第二极耳3与软包电芯本体1的接触，起到绝缘作用，同时也将第一极耳2和第二极耳3连接在软包电芯本体1外周。本发明的一种用于电池的软包电芯，相对于现有技术而言具有的优点是：第一极耳2和第二极耳3位置可以任意位置布置，聚合物电芯与其他零部件连接方便。A soft-packed battery core for a battery of the present invention, please refer to the related drawings of FIGS. 1 to 4, including a soft-packed battery core body 1, a first pole tab 2 and a second pole tab 3, The core body 1 is in the shape of a cylinder or a rectangular parallelepiped. The soft-packed battery core body 1 is provided with a winding member wound around the center. The ends of the first tab 2 and the second tab 3 are fixedly connected. On the winding member, both the upper and lower surfaces of the first tab 2 and the second tab 3 are fixedly connected to the outer periphery of the soft-pack battery core body 1 through the tab glue 4 and are electrically connected from the soft pack The outer periphery of the core body 1 extends radially outward. In this way, the outer shape of the soft-pack cell body 1 is cylindrical, and when the soft-pack cell body 1 is assembled into other components, it occupies less space for other components and saves space for other components. The outer shape of the flexible cell body 1 may also be a rectangular parallelepiped. The free ends of the first pole lug 2 and the second pole lug 3 protrude from the winding member provided inside the soft pack cell body 1, and the first pole lug 2 and the second pole lug 3 can be symmetrically arranged from the winding The two sides of the winding part can also be extended asymmetrically. The winding member is wound around the soft-packed battery core 1 one by one, which is formed by winding the positive pole piece, the separator and the negative pole piece, and the separator serves to prevent the first tab 2 and the second tab 3 from being short-circuited The role. The first pole lug 2 is connected to the positive (negative) pole piece and the second pole lug 3 is connected to the negative (positive) pole piece. The specific position can be set according to the actual situation, which is convenient for the soft pack cell body 1 and other parts Connection, the first tab 2 is connected to the positive (negative) pole piece and the second tab 3 is connected to the negative (positive) pole piece, the specific positions of the first tab 2 and the second tab 3 can be set according to the actual situation , To facilitate the connection between the soft pack cell body 1 and other components. The first tab 2 may be a positive electrode or a negative electrode; the second tab 3 may be a positive electrode or a negative electrode. The first and second tabs 2 are bonded to the upper and lower surfaces of the portion of the body of the soft-packed cell body 1 that are bonded to the tab ear glue 4, and the top and bottom faces of the tab ear glue 4 are adhesive. The first tab 2 passes through the tab The glue 4 is adhered to the outer periphery of the soft cell body 1 and extends outward from the outer periphery of the soft cell body 1; the second tab 3 is adhered to the outer periphery of the soft cell body 1 by the tab glue 4 and is electrically The outer periphery of the core body 1 extends outward. The provision of the tab glue 4 prevents the contact between the first tab 2 and the second tab 3 and the soft-packed cell body 1 for insulation, and also connects the first tab 2 and the second tab 3 to The outer periphery of the soft pack cell body 1. Compared with the prior art, a soft-pack battery cell of the present invention has the advantages that: the positions of the first tab 2 and the second tab 3 can be arranged at any position, and the polymer cell and other zero Components are easy to connect.

本发明的一种用于电池的软包电芯，请参考图1至图4相关各图，在前面技术方案的基础上还可以是:所述第一极耳2和所述第二极耳3从所述软包电芯本体1外周上部或者中部或下部向外延伸。这样，第一极耳2和第二极耳3从软包电芯本体1外周上部或中部或下部处 径向向外延伸，即根据软包电芯不同的需求，来选择处于不同位置的第一极耳2和第二极耳3的软包电芯。For a soft-packed battery cell of the present invention, please refer to the related drawings in FIGS. 1 to 4, and on the basis of the foregoing technical solution, the first pole ear 2 and the second pole ear 3 extends outward from the upper or middle or lower portion of the outer periphery of the soft-packed battery body 1. In this way, the first tab 2 and the second tab 3 extend radially outward from the upper or middle or lower portion of the outer periphery of the soft-packed cell body 1, that is, according to the different needs of the soft-packed cell, the first The soft-packed cells of the first pole ear 2 and the second pole ear 3.

本发明的一种用于电池的软包电芯，请参考图1至图4相关各图，在前面技术方案的基础上还可以是:所述软包电芯本体1包括上铝塑膜层11、下铝塑膜层12和电解液，所述上铝塑膜层11和所述下铝塑膜层12边缘之间通过密封热压固定连接，所述电解液位于所述上铝塑膜层11和所述下铝塑膜层12围设形成的腔体内，所述第一极耳2端部上下表面均通过极耳胶4粘接于所述上铝塑膜层11和所述下铝塑膜层12上。这样，上铝塑膜层11和下铝塑膜层12之间围设形成腔体且整体上形成圆柱状，腔体内填充有电解液。上铝塑膜层11和下铝塑膜层12之间相互包裹且上铝塑膜层11和下铝塑膜层12边缘通过热压方式连接的，使得两者之间连接更加紧密，用于容纳电解液。第一极耳2端部上表面通过极耳胶4与上铝塑膜层11粘接连接；第一极耳1端部下表面通过极耳胶4与下铝塑膜层12粘接连接，使得第一极耳2与上铝塑膜层11和下铝塑膜层12均粘接连接且同时起到绝缘作用。第二极耳3端部上表面通过极耳胶4与上铝塑膜层11粘接连接；第二极耳3端部下表面通过极耳胶4与下铝塑膜层12粘接连接，使得第二极耳3与上铝塑膜层11和下铝塑膜层12均粘接连接且同时起到绝缘作用。当第一极耳2和第二极耳3位于软包电芯本体1中部时，上铝塑膜层11和下铝塑膜层12均需要模具冲出凹坑形状，用于容纳电解液等。或当第一极耳2和第二极耳3位于软包电芯本体1上部时，只需将下铝塑膜层12用模具冲出凹坑形状即可，简化了工序。或第一极耳2和第二极耳3位于软包电芯本体1下部时，只需将上铝塑膜层11用模具冲出凹坑形状即可，简化了工序。进一步优选的技术方案为：所述上铝塑膜层11外周沿径向向外延伸设置有上延伸层，所述下铝塑膜层12外周沿径向向外延伸设置有下延伸层，所述上延伸层和所述下延伸层边缘之间通过密封热压固定连接。这样，上延伸层通过上铝塑膜层11四周边缘向外延伸形成 的，下延伸层通过下铝塑膜层12四周边缘向外延伸形成的，上延伸层和下延伸层之间热压固定连接，使得上铝塑膜层11和下铝塑膜层12之间能更紧密地结合在一起，防止泄露电解液。For a soft-packed battery cell for batteries of the present invention, please refer to the related drawings in FIGS. 1 to 4. On the basis of the foregoing technical solution, the soft-packed battery cell body 1 may include an aluminum plastic film layer 11. The lower aluminum plastic film layer 12 and the electrolyte, the upper aluminum plastic film layer 11 and the edge of the lower aluminum plastic film layer 12 are fixedly connected by sealing hot pressing, and the electrolyte is located on the upper aluminum plastic film The layer 11 and the lower aluminum-plastic film layer 12 surround the cavity formed, and the upper and lower surfaces of the end of the first tab 2 are bonded to the upper aluminum-plastic film layer 11 and the lower through the tab glue 4 On the aluminum-plastic film layer 12. In this way, a cavity is formed between the upper aluminum-plastic film layer 11 and the lower aluminum-plastic film layer 12 and is formed in a cylindrical shape as a whole, and the cavity is filled with electrolyte. The upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 are wrapped around each other, and the edges of the upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 are connected by hot pressing, so that the connection between the two is more tight. Hold electrolyte. The upper surface of the end of the first tab 2 is adhesively connected to the upper aluminum plastic film layer 11 by the tab glue 4; the lower surface of the end of the first tab 1 is adhesively connected to the lower aluminum plastic film layer 12 by the tab glue 4 so that The first pole lug 2 is adhesively connected to the upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 and simultaneously plays an insulating role. The upper surface of the end of the second tab 3 is adhesively connected to the upper aluminum-plastic film layer 11 by the tab glue 4; the lower surface of the end of the second tab 3 is adhesively connected to the lower aluminum-plastic film layer 12 by the tab glue 4 so that The second tab 3 is adhesively connected to the upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 and simultaneously plays an insulating role. When the first tab 2 and the second tab 3 are located in the middle of the soft-packed cell body 1, both the upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 need a mold to punch out the shape of a pit for accommodating electrolyte, etc. . Or when the first tab 2 and the second tab 3 are located on the upper part of the soft-packed cell body 1, only the lower aluminum plastic film layer 12 can be punched out of the pit shape with a mold, which simplifies the process. Or, when the first tab 2 and the second tab 3 are located at the lower part of the soft-packed battery core body 1, it is only necessary to punch the upper aluminum-plastic film layer 11 out of the pit shape with a mold, which simplifies the process. A further preferred technical solution is that: the outer periphery of the upper aluminum-plastic film layer 11 extends radially outward with an upper extension layer, and the outer periphery of the lower aluminum-plastic film layer 12 extends radially outward with a lower extension layer. The edges of the upper extension layer and the lower extension layer are fixedly connected by sealing hot pressing. In this way, the upper extension layer is formed by the outer edges of the upper aluminum plastic film layer 11 extending outward, the lower extension layer is formed by the outer edges of the lower aluminum plastic film layer 12 extending outward, and the upper extension layer and the lower extension layer are fixed by hot pressing The connection enables the upper aluminum plastic film layer 11 and the lower aluminum plastic film layer 12 to be more tightly bonded together to prevent leakage of electrolyte.

本发明的一种用于电池的软包电芯，请参考图1至图4相关各图，在前面技术方案的基础上还可以是:所述第一极耳2和所述第二极耳3对称设置于所述软包电芯本体外圆周上。这样，第一极耳2和第二极耳3对称设置在卷绕件上，即第一极耳2和第二极耳3设置在上延伸层和下延伸层之间固定连接处。For a soft-packed battery cell of the present invention, please refer to the related drawings in FIGS. 1 to 4, and on the basis of the foregoing technical solution, the first pole ear 2 and the second pole ear 3 Symmetrically arranged on the outer circumference of the body of the soft-packed electric core. In this way, the first tab 2 and the second tab 3 are symmetrically disposed on the winding member, that is, the first tab 2 and the second tab 3 are disposed at a fixed connection between the upper extension layer and the lower extension layer.

本发明的一种用于电池的软包电芯，请参考图1至图4相关各图，在前面技术方案的基础上还可以是:所述第一极耳2和所述第二极耳3宽度均大于2mm。这样，将第一极耳2和第二极耳3宽度大于2mm，方便第一极耳2和第二极耳3与其他零部件焊接固定，如将聚合物电芯用于纽扣电池内时，第一极耳2和第二极耳3固定连接于纽扣电池内。For a soft-packed battery cell of the present invention, please refer to the related drawings in FIGS. 1 to 4, and on the basis of the foregoing technical solution, the first pole ear 2 and the second pole ear 3 The width is greater than 2mm. In this way, the width of the first tab 2 and the second tab 3 is greater than 2 mm, which is convenient for welding and fixing the first tab 2 and the second tab 3 with other components, such as when a polymer battery is used in the button battery, The first pole ear 2 and the second pole ear 3 are fixedly connected in the button battery.

本发明的一种用于电池的软包电芯，请参考图1至图4相关各图，在前面技术方案的基础上还可以是:所述第一极耳2和所述第二极耳3均由金属镍材料制成。这样，第一极耳2和第二极耳3均通过金属镍制成，方便第一极耳2和第二极耳3与其他零部件之间的焊接连接。如将聚合物电芯用于纽扣电池内时，第一极耳2和第二极耳3固定连接于纽扣电池内。For a soft-packed battery cell of the present invention, please refer to the related drawings in FIGS. 1 to 4, and on the basis of the foregoing technical solution, the first pole ear 2 and the second pole ear 3 are made of nickel metal material. In this way, both the first tab 2 and the second tab 3 are made of metallic nickel, which facilitates the welding connection between the first tab 2 and the second tab 3 and other components. When a polymer battery cell is used in a button battery, the first tab 2 and the second tab 3 are fixedly connected in the button battery.

上述仅对本发明中的几种具体实施例加以说明，但并不能作为本发明的保护范围，凡是依据本发明中的设计精神所作出的等效变化或修饰或等比例放大或缩小等，均应认为落入本发明的保护范围。The above only describes several specific embodiments of the present invention, but it does not serve as the scope of protection of the present invention. Any equivalent changes or modifications or proportional enlargement or reduction made according to the design spirit of the present invention should be It is considered to fall within the protection scope of the present invention.

Claims (7)

一种用于电池的软包电芯，其特征在于：包括软包电芯本体(1)、第一极耳(2)和第二极耳(3)，所述软包电芯本体(1)呈圆柱状或方体，所述软包电芯本体(1)内设置有卷设于中心的卷绕件，所述第一极耳(2)和所述第二极耳(3)端部均固定连接于所述卷绕件上，所述第一极耳(2)和所述第二极耳(3)上下表面均通过极耳胶(4)固定连接于所述软包电芯本体(1)外周且从所述软包电芯本体(1)外周径向向外延伸。A soft-packed battery core for a battery, characterized by comprising a soft-packed battery body (1), a first tab (2) and a second tab (3), the soft-packed battery body (1 ) In the shape of a cylinder or a rectangular parallelepiped, the body of the soft-packed battery core (1) is provided with a winding member wound around the center, the ends of the first tab (2) and the second tab (3) Both parts are fixedly connected to the winding member, and the upper and lower surfaces of the first tab (2) and the second tab (3) are fixedly connected to the soft-packed battery core through tab glue (4) The outer periphery of the body (1) extends radially outward from the outer periphery of the soft-packed cell body (1). 根据权利要求1所述的一种用于电池的软包电芯，其特征在于：所述第一极耳(2)和所述第二极耳(3)从所述软包电芯本体(1)外周上部或者中部或下部向外延伸。The soft-packed battery core for a battery according to claim 1, wherein the first tab (2) and the second tab (3) are separated from the soft-packed battery body ( 1) The upper or middle or lower part of the outer periphery extends outward. 根据权利要求1所述的一种用于电池的软包电芯，其特征在于：所述软包电芯本体(1)包括上铝塑膜层(11)、下铝塑膜层(12)和电解液，所述上铝塑膜层(11)和所述下铝塑膜层(12)边缘之间通过密封热压固定连接，所述电解液位于所述上铝塑膜层(11)和所述下铝塑膜层(12)围设形成的腔体内，所述第一极耳(2)端部上下表面均通过极耳胶(4)粘接于所述上铝塑膜层(11)和所述下铝塑膜层(12)上。The soft-packed battery core for a battery according to claim 1, wherein the soft-packed battery body (1) includes an upper aluminum plastic film layer (11) and a lower aluminum plastic film layer (12) And the electrolyte, the upper aluminum plastic film layer (11) and the edge of the lower aluminum plastic film layer (12) are fixedly connected by sealing hot pressing, and the electrolyte is located on the upper aluminum plastic film layer (11) And a cavity formed by surrounding the lower aluminum-plastic film layer (12), and the upper and lower surfaces of the end of the first tab (2) are bonded to the upper aluminum-plastic film layer by a tab glue (4) ( 11) and the lower aluminum plastic film layer (12). 根据权利要求3所述的一种用于电池的软包电芯，其特征在于：所述上铝塑膜层(11)外周沿径向向外延伸设置有上延伸层，所述下铝塑膜层(12)外周沿径向向外延伸设置有下延伸层，所述上延伸层和所述下延伸层边缘之间通过密封热压固定连接。The soft-coated battery core for a battery according to claim 3, characterized in that: the outer periphery of the upper aluminum-plastic film layer (11) is provided with an upper extension layer extending radially outward, and the lower aluminum-plastic The outer periphery of the membrane layer (12) extends radially outwards with a lower extension layer, and the edges of the upper extension layer and the lower extension layer are fixedly connected by sealing hot pressing. 根据权利要求1-4任意一项权利要求所述的一种用于电池的软包电芯，其特征在于：所述第一极耳(2)和所述第二极耳(3)对称设置于所述软包电芯本体外圆周上。The soft-packed battery core for a battery according to any one of claims 1 to 4, wherein the first tab (2) and the second tab (3) are symmetrically arranged On the outer circumference of the body of the soft-packed battery core. 根据权利要求1-4任意一项权利要求所述的一种用于电池的 软包电芯，其特征在于：所述第一极耳(2)和所述第二极耳(3)宽度均大于2mm。The soft-packed battery cell for a battery according to any one of claims 1 to 4, wherein the width of the first tab (2) and the second tab (3) are both Greater than 2mm. 根据权利要求1-4任意一项权利要求所述的一种用于电池的软包电芯，其特征在于：所述第一极耳(2)和所述第二极耳(3)均由金属镍材料制成。A soft-packed battery cell for a battery according to any one of claims 1 to 4, wherein the first tab (2) and the second tab (3) are both Made of nickel metal material.
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