CN106252540A - The structure of a kind of flexible-packed battery and manufacture method - Google Patents

The structure of a kind of flexible-packed battery and manufacture method Download PDF

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Publication number
CN106252540A
CN106252540A CN201610771447.8A CN201610771447A CN106252540A CN 106252540 A CN106252540 A CN 106252540A CN 201610771447 A CN201610771447 A CN 201610771447A CN 106252540 A CN106252540 A CN 106252540A
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CN
China
Prior art keywords
flexible
positive
negative
pole
packed battery
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Application number
CN201610771447.8A
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Chinese (zh)
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CN106252540B (en
Inventor
谢振华
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Yixing Huiyuan composite material Co., Ltd.
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谢振华
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Priority to CN201610771447.8A priority Critical patent/CN106252540B/en
Publication of CN106252540A publication Critical patent/CN106252540A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/172Arrangements of electric connectors penetrating the casing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561Gases
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567Liquids
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/183Sealing members
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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

Abstract

nullThe invention provides the structure of a kind of flexible-packed battery,It can solve existing flexible-packed battery and be welded to connect thus internal resistance is big due to the electrode slice of lug with battery,Caloric value and kwh loss are big,The problem affecting the performance of flexible-packed battery,Including the some positive plates being wrapped in Package casing and some negative plates,Separated by barrier film between described positive plate and negative plate,It is filled with electrolyte in described Package casing,Described positive plate is the positive-pole base material scribbling positive electrode,Negative plate is the base material of cathode scribbling negative material,Described positive-pole base material is provided with positive pole exit,Described base material of cathode has negative pole exit,It is characterized in that: described positive pole exit extends described Package casing and constitutes anode ear,Described negative pole exit extends described Package casing and constitutes negative electrode lug,Additionally provide the manufacture method of this flexible-packed battery simultaneously.

Description

The structure of a kind of flexible-packed battery and manufacture method
Technical field
The present invention relates to flexible-packed battery technical field, the structure of a kind of flexible-packed battery and manufacture method.
Background technology
The shell of flexible-packed battery is softer aluminum-plastic composite membrane, it is thus achieved that high capacity cell generally by many positive plates and Negative plate by barrier film separate from after be stacked in Package casing, filling electrolyte constitute battery, the positive pole exit of positive plate Welding together, the negative pole exit of positive plate welds together, and then distinguishes on positive pole exit and negative pole exit again Weld a positive pole ear and a negative lug.
Such flexible packaged battery pool structure is that follow-up welding is got on due to lug, and the internal resistance that result in lug is relatively big, holds Easily heating, simultaneously, it is bad that welding also has certain probability to produce, and affects battery quality;Additionally due to lug is by welding Being connected with positive plate and negative plate, can smoothly complete in order to ensure welding, the thickness of lug generally ratio is relatively thin, carries in this The problem come is exactly that the internal resistance of lug is relatively big, and caloric value and kwh loss are big, affect the performance of battery.
Summary of the invention
For the problems referred to above, the invention provides a kind of flexible packaged battery pool structure, it can solve existing flexible packaged battery Pond is welded to connect thus internal resistance is big due to the electrode slice of lug Yu battery, and caloric value and kwh loss are big, affect flexible-packed battery The problem of performance.
A kind of flexible packaged battery pool structure, including the some positive plates being wrapped in Package casing and some negative plates, described Being separated by barrier film between positive plate and negative plate, be filled with electrolyte in described Package casing, described positive plate is for just scribbling The positive-pole base material of pole material, negative plate is the base material of cathode scribbling negative material, and described positive-pole base material is provided with positive pole exit, institute State base material of cathode and there is negative pole exit, it is characterised in that: described positive pole exit extends described Package casing and constitutes positive pole Ear, described negative pole exit extends described Package casing and constitutes negative electrode lug.
Further, described positive-pole base material is aluminium foil, and described base material of cathode is Copper Foil.
Further, described anode ear and described negative electrode lug include integrally welded end and respectively near described packaging The unwelded all-in-one-piece of shell is flexible coupling portion.
Further, the position that described positive pole exit contacts with described Package casing with described negative pole exit is respectively Integrally welded connecting portion.
Further, described connecting portion carries out chamfering on horizontal two ends respectively.
Further, the end of described anode ear and described negative electrode lug is integrally welded by macromolecule friction welding (FW) respectively.
Further, the end of described anode ear and described negative electrode lug is integrally welded by radiation weldering respectively.
Further, described negative electrode lug is coated with nickel metal layer.
A kind of manufacture method of above-mentioned flexible-packed battery, it is characterised in that: in the end or just of welding battery pole ear During the connecting portion that pole exit contacts with negative pole exit Package casing, compressed end or the company of battery pole ear by metal derby Meet portion, for clamping and heat conduction.
Further, metal derby is carried out water-cooling.
Further, metal derby is carried out wind-cooling heat dissipating.
The flexible packaged battery pool structure of the present invention, by extending the exit of electrode slice, by positive-pole base material and base material of cathode Exit extends respectively and stretches out described flexible-packed battery and constitute anode ear and negative electrode lug, the end weldering of the i.e. lug in the end of exit Being connected into one, such design is then without other soldering polar ear, it is to avoid use solder to cause the increasing of lug internal resistance in welding process Adding, the thickness of lug can be made thicker than traditional lug simultaneously, thus reduces the internal resistance of lug, reduces caloric value and electricity damages Consumption, promotes the performance of battery, is that unwelded all-in-one-piece is flexible coupling portion by arranging lug near the part of Package casing, permissible Prevent battery in the use of adverse circumstances, occur fracture to be subject to because the stress repeatedly rocking the lug of the battery caused distorts Damage;The position that positive pole exit contacts with Package casing with negative pole exit is respectively integrally welded connecting portion, such The generation of electrolyte leakage is avoided in design, and connecting portion carries out chamfering respectively on horizontal two ends so that connecting portion and packaging Housing is preferably fitted, promote packaging shell better tightness, it is to avoid the generation of electrolyte leakage, the manufacture of the present invention The method of flexible-packed battery, contacts with negative pole exit Package casing in the end of welding battery pole ear or positive pole exit During connecting portion, use the end of metal derby compression battery pole ear or connecting portion compress and dispel the heat, place heat during welding Barrier film in battery is caused damage by amount, it is to avoid cell damage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flexible-packed battery of the present invention;
Fig. 2 is the structural representation of the side-looking of the positive pole exit of the flexible-packed battery of the present invention;
Fig. 3 is the horizontal cross-sectional schematic of the connecting portion of the positive pole exit of the flexible-packed battery of the present invention.
Detailed description of the invention
The following is the specific embodiment of the present invention and combine accompanying drawing, technical scheme is further described, But the present invention is not limited to these embodiments.
See Fig. 1, Fig. 2, Fig. 3, a kind of flexible packaged battery pool structure of the present invention, some including be wrapped in Package casing 1 Positive plate and some negative plates, separated by barrier film between positive plate and negative plate, and in Package casing, 1 is filled with electrolyte, just Pole piece is the positive-pole base material 2 scribbling positive electrode, and negative plate is the base material of cathode scribbling negative material, and positive-pole base material is aluminium foil, Base material of cathode is Copper Foil, and positive-pole base material 2 is provided with positive pole exit 3, and base material of cathode has negative pole exit 4, and positive pole exit 3 prolongs Stretching out Package casing and constitute anode ear 5, negative pole exit 4 extends Package casing and constitutes negative electrode lug 6, anode ear 5 and negative electrode lug 6 Include integrally welded end 7 respectively and be flexible coupling portion 8 near the unwelded all-in-one-piece of Package casing, positive pole exit 3 The position contacted with Package casing 1 with negative pole exit 4 is respectively integrally welded connecting portion 9, sees Fig. 3, and connecting portion 9 is at horizontal stroke To two ends on carry out chamfering 10 respectively, negative electrode lug is coated with nickel metal layer.
The end of anode ear and negative electrode lug is integrally welded by macromolecule friction welding (FW) respectively, anode ear and the end of negative electrode lug Portion can also be integrally welded by radiation weldering respectively.
The flexible packaged battery pool structure of the present invention, by extending the exit of electrode slice, by positive-pole base material and base material of cathode Exit extends respectively and stretches out described flexible-packed battery and constitute anode ear and negative electrode lug, the end weldering of the i.e. lug in the end of exit Being connected into one, such design is then without other soldering polar ear, it is to avoid use solder to cause the increasing of lug internal resistance in welding process Adding, the thickness of lug can be made thicker than traditional lug simultaneously, thus reduces the internal resistance of lug, reduces caloric value and electricity damages Consumption, promotes the performance of battery, is that unwelded all-in-one-piece is flexible coupling portion by arranging lug near the part of Package casing, permissible Prevent battery in the use of adverse circumstances, occur fracture to be subject to because the stress repeatedly rocking the lug of the battery caused distorts Damage;The position that positive pole exit contacts with Package casing with negative pole exit is respectively integrally welded connecting portion, such The generation of electrolyte leakage is avoided in design, and connecting portion carries out chamfering respectively on horizontal two ends so that connecting portion and packaging Housing is preferably fitted, promote packaging shell better tightness, it is to avoid the generation of electrolyte leakage;Weld for convenience, Nickel metal layer can be coated with, it is also possible to anticathode ear is passivated processing on negative electrode lug.
The method of the flexible-packed battery of the manufacture of the present invention, is welding end or the positive pole exit of battery pole ear and is bearing During the connecting portion that pole exit Package casing contacts, the end of metal derby compression battery pole ear or connecting portion is used to compress And heat radiation, the barrier film in battery is caused damage by heat when placing welding, it is to avoid cell damage, uses air-cooled or water-cooled Method, dispels the heat to metal derby, can improving radiating effect further.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any ripe Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage knowing this technology.Cause This, have usually intellectual such as complete with institute under technological thought without departing from disclosed spirit in art All equivalences become are modified or change, and must be contained by the claim of the present invention.

Claims (10)

1. a structure for flexible-packed battery, including the some positive plates being wrapped in Package casing and some negative plates, described Being separated by barrier film between positive plate and negative plate, be filled with electrolyte in described Package casing, described positive plate is for just scribbling The positive-pole base material of pole material, negative plate is the base material of cathode scribbling negative material, and described positive-pole base material is provided with positive pole exit, institute State base material of cathode and there is negative pole exit, it is characterised in that: described positive pole exit extends described Package casing and constitutes positive pole Ear, described negative pole exit extends described Package casing and constitutes negative electrode lug.
The structure of a kind of flexible-packed battery the most according to claim 1, it is characterised in that: described positive-pole base material is aluminium foil, Described base material of cathode is Copper Foil.
The structure of a kind of flexible-packed battery the most according to claim 2, it is characterised in that: described anode ear and described negative pole Ear includes integrally welded end respectively and is flexible coupling portion near the unwelded all-in-one-piece of described Package casing.
The structure of a kind of flexible-packed battery the most according to claim 2, it is characterised in that: described positive pole exit and described The position that negative pole exit contacts with described Package casing is respectively integrally welded connecting portion.
The structure of a kind of flexible-packed battery the most according to claim 4, it is characterised in that: described connecting portion is horizontal two Chamfering is carried out respectively on end.
The structure of a kind of flexible-packed battery the most according to claim 3, it is characterised in that: described anode ear and described negative pole The end of ear is integrally welded by macromolecule friction welding (FW) respectively.
The structure of a kind of flexible-packed battery the most according to claim 3, it is characterised in that: described anode ear and described negative pole The end of ear is integrally welded by radiation weldering respectively.
8. the manufacture method of a flexible-packed battery as claimed in claim 4, it is characterised in that: at the end of welding battery pole ear During the connecting portion that portion or positive pole exit contact with negative pole exit Package casing, compressed the end of battery pole ear by metal derby Portion or connecting portion, for clamping and heat conduction.
The manufacture method of a kind of flexible-packed battery the most according to claim 8, it is characterised in that: metal derby is carried out water-cooled Heat radiation.
The manufacture method of a kind of flexible-packed battery the most according to claim 8, it is characterised in that: metal derby is carried out wind Cold heat radiation.
CN201610771447.8A 2016-08-31 2016-08-31 A kind of structure and manufacturing method of flexible-packed battery Active CN106252540B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2909544Y (en) * 2006-05-10 2007-06-06 惠州Tcl金能电池有限公司 Winding lithium battery electro-chip structure
CN101867059A (en) * 2010-05-25 2010-10-20 陈性保 Ultrathin lithium-manganese polymer battery and processing method thereof
CN202503065U (en) * 2012-02-09 2012-10-24 广州丰江电池新技术股份有限公司 Thin lithium ion battery
CN104157823A (en) * 2014-08-26 2014-11-19 深圳市科达利实业股份有限公司 Soft connecting piece used for power battery and processing method thereof
CN204045664U (en) * 2014-08-29 2014-12-24 王亚楠 Battery pole ear
CN204966576U (en) * 2015-10-26 2016-01-13 深圳市三和朝阳科技有限公司 Bipolar ear polymer high magnification battery
CN206497908U (en) * 2016-08-31 2017-09-15 谢振华 A kind of structure of flexible-packed battery

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2909544Y (en) * 2006-05-10 2007-06-06 惠州Tcl金能电池有限公司 Winding lithium battery electro-chip structure
CN101867059A (en) * 2010-05-25 2010-10-20 陈性保 Ultrathin lithium-manganese polymer battery and processing method thereof
CN202503065U (en) * 2012-02-09 2012-10-24 广州丰江电池新技术股份有限公司 Thin lithium ion battery
CN104157823A (en) * 2014-08-26 2014-11-19 深圳市科达利实业股份有限公司 Soft connecting piece used for power battery and processing method thereof
CN204045664U (en) * 2014-08-29 2014-12-24 王亚楠 Battery pole ear
CN204966576U (en) * 2015-10-26 2016-01-13 深圳市三和朝阳科技有限公司 Bipolar ear polymer high magnification battery
CN206497908U (en) * 2016-08-31 2017-09-15 谢振华 A kind of structure of flexible-packed battery

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Effective date of registration: 20190712

Address after: Dongshanzui dingshuzhen Yixing city 214200 Jiangsu city of Wuxi Province

Patentee after: Yixing Huiyuan composite material Co., Ltd.

Address before: 214174 Dongshanzui, Dingshu Town, Wuxi City, Jiangsu Province

Patentee before: Xie Zhenhua

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Denomination of invention: The invention relates to a structure of a flexible packaging battery and a manufacturing method thereof

Effective date of registration: 20211230

Granted publication date: 20190423

Pledgee: Bank of China Limited Yixing branch

Pledgor: YIXING HUIHUA CLADDING MATERIAL CO.,LTD.

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PE01 Entry into force of the registration of the contract for pledge of patent right