CN101692505B - Plate lug connecting method used in process of assembling power soft-packed lithium-ion storage batteries - Google Patents
Plate lug connecting method used in process of assembling power soft-packed lithium-ion storage batteries Download PDFInfo
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- CN101692505B CN101692505B CN2009102328221A CN200910232822A CN101692505B CN 101692505 B CN101692505 B CN 101692505B CN 2009102328221 A CN2009102328221 A CN 2009102328221A CN 200910232822 A CN200910232822 A CN 200910232822A CN 101692505 B CN101692505 B CN 101692505B
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- 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
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- 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
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Abstract
The invention provides a plate lug connecting method used for assembling power soft-packed lithium-ion storage batteries, which has the advantages of tight and firm connection, short operation time and the like. The method overlays positive and negative plate plugs and metal sheets connected by a circuit protective plate lead according to a certain order in a winding mode, and winds the positive and negative plate plugs and the metal sheets together through a special winding device, and finally fixes the positive and negative plate plugs and the metal sheets through a silica gel. The method has the main characteristics of radically avoiding influence on battery cells of high temperature caused by soldering and having simple process.
Description
Technical field
The present invention relates to a kind of batteries packing technique, be specifically related to a kind of plate lug connecting method that is used for process of assembling power soft-packed lithium-ion storage batteries.
Background technology
The lug connected mode was soldering or ultrasonic bonding when power-type lithium ion storage battery electricity core commonly used was connected.Soldering method is easy, only needs to use that simple tools (as electric iron) can finish that welding, solder joint are rebuild, components and parts change, technical process such as welding again.In addition, soldering also have cost low, easily realize advantages such as automation.The connection of lug mainly is exactly to adopt this mode of soldering in the lithium battery packaging technology at present.But there are the following problems in application for this mode:
1, when welding, can produce high temperature on the lug surface, battery inside is temperature rising thereupon also.Hot conditions can make the stability decreases and the electrode cycle performance variation of SEI film, thereby influences the capacity and the cycle performance thereof of battery.And electric in-core portion produces high heat, can cause the vaporization of part electrolyte even decomposes, and inner pressure of battery increases makes the battery case distortion, and is serious even battery temperature brought up to make material combustion arrive blast;
2, when welding,, influence the solderability of material, and can have influence on the contact resistance and the conductivity thereof of lug because high temperature makes the metal surface produce oxide-film;
3, the positive pole ear of power-type lithium ion battery is an aluminium strip, and negative lug is a nickel strap, and for the aluminum substrate material, soldering needs special-purpose special solder flux; For fear of this kind situation, adopt at present mostly laser spot welder or supersonic welder welding of aluminum nickel composite band again on the aluminium strip matrix so that with the welding of the nickel strap of negative pole, increased the complexity of operation;
4, solder flux can volatilize pernicious gas when heating, and the operator is worked the mischief;
5, because the lug surface can exist some oxides and dirt unavoidably, be easy to cause rosin joint.The contact resistance of faulty soldered joint can cause local pyrexia, and local temperature raises and to impel the solder joint situation of incomplete contact further to worsen again, and is final even solder joint is come off, and causes battery pack not work.Numeral shows according to statistics, in the fault of electronic system product, half is nearly arranged owing to failure welding causes;
6, because the MOSFET input impedance in the circuit protection plate is very high, can not bears and be higher than 200 ℃ temperature, otherwise internal circuit is punctured and lose efficacy.Therefore connect the adverse effect that the lead of the lug of electric core and protective circuit module can produce the circuit protection plate with the method for soldering.
The ultrasonic wave metal welding is to utilize the dither ripple to be delivered to the metal surface of two need welding, under the situation of pressurization, make two metal surface phase mutual friction and form fusion between the molecular layer, that its advantage is is quick, energy-conservation, fusion intensity height, good conductivity, no-spark, process near cold conditions; Shortcoming is that institute's weld metal pieces can not be too thick (be generally less than or equal 5mm), solder joint position can not be too big, need pressurization, and positive and negative lug connects complicated, can only be Al-Al face, the welding of Ni-Ni face, welding between the different metals needs Reparametrization and makes operating process miscellaneous, inefficiency.The most important thing is being connected between lug that ultrasonic bonding can not be applied to electric core and the protective circuit module, still need to adopt the method for soldering, thereby the adverse effect that can't avoid soldering to cause for electric in-core portion and circuit protection plate.
Therefore, two kinds of welding manners all are not the optimal modes that the lithium-ion-power cell lug connects more than.
Summary of the invention
The object of the invention is to provide a kind of high temperature that produces both can avoid soldering the time that battery is caused damage, and complicated miscellaneous operating process can not arranged as ultrasonic bonding again, the plate lug connecting method that is used for the power type flexible packaging lithium ion battery assembling of advantages such as the connection that also has these two kinds of welding manners simultaneously is tight, firm, and the operating time is short.
The method that the present invention adopts coiling is superimposed the sheet metal that positive and negative lug and circuit protection plate lead-in wire connect in a certain order, with the private volume winding apparatus it is wound on together then, and recycle silicon glue is fixed at last.Its maximum is characterised in that the influence of having avoided the high temperature that soldering caused to be caused for battery inside fully, and technology is simple.
The plate lug connecting method that the present invention adopts specifically may further comprise the steps:
1. the size according to lug designs and makes the volume pin that is fit to it in advance;
2. lead-in wire and the ready sheet metal with the circuit protection plate welds together;
3. lug and lead-in wire connection sheet metal are carried out preliminary treatment: the dirt that it is surperficial and the oxide-film of metal surface are removed;
4. the sheet metal with positive and negative lug and lead-in wire connection is close together in certain sequence, is fixed with set mould;
5. the volume pin with winding apparatus is fixed together with stack pole piece well, adjusts rotating speed, starts winding apparatus then;
6. lug is reeled and is finished, and with sheet metal it is carried out mechanical consolidation and handles;
7. reinforce and finish, above the wedge shape mouth that sees through set mould covered silica gel or other material, natural coagulation at room temperature reached the effect of sealing corrosion.
The present invention is in the installation process of electric core, and requiring can not have round kinking to cell polar ear, and not drawing, in order to avoid cell polar ear is broken.And when using ultrasonic bonding, inevitably the aluminium nickel composite band of negative pole to be turned, so that weld with the Al face of the positive pole of another battery, this has just increased the complexity of operation, adopt the mode of reeling then to avoid this generic operation fully, even need not on anodal aluminium strip, to weld nickel strap again, simplified electric core production process, improve efficient, saved cost.
The method that lug among the present invention is reeled is applicable to the connection of flexible packing lithium ion electric core lug, and will notice that winding apparatus is reeled in the process of reeling dynamics and rotating speed are moderate, in order to avoid cell polar ear broken, and is convenient to control the number of turns of coiling.
The present invention at first is superimposed the positive and negative lug of two battery and the sheet metal that is connected with circuit protection plate lead-in wire; and then use winding apparatus that it is closely linked together, make its reinforcing by surface coverage silica gel more at last and reach the purpose that prevents the lug corrosion.The present invention not only technology is simple, is easy to control, and need not complex apparatus and raw material in this way, and cost is low, is convenient to operation and management, and every performance index of battery pack are not all influenced, and is a kind of very desirable electric core assembling mode.
Beneficial effect: 1, lug takeup type of the present invention can replace existing traditional soldering or ultrasonic bonding to be used for the assembling of power type flexible packaging lithium ion battery, satisfies every performance requirement of electrokinetic cell, and the electric core in the assembling process has really been accomplished zero injury;
The damage problem that the high temperature that has been produced when 2, technology of the present invention has solved soldering fully causes electric core, and safety and environmental protection need not extra raw material in the lug connection procedure;
3, the present invention compare with the ultrasonic bonding mode production procedure simplify, simple to operate, need not special welding equipment and operation skill, and the damage of having avoided the lug turnover that electric core is caused fully;
4, use the lug takeup type as lug ways of connecting in the power type flexible packaging lithium ion battery assembling, resulting effect and soldering technology are roughly the same, the connection of lug closely, firmly, and contact resistance is little, can not influence battery capacity, cycle performance and fail safe in use.
Description of drawings
Fig. 1 is two electric core schematic diagrames to be assembled among the present invention;
Fig. 2 is the electric core assembly drawing of method of attachment of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments:
As depicted in figs. 1 and 2, a kind of plate lug connecting method that is used for process of assembling power soft-packed lithium-ion storage batteries may further comprise the steps:
1, the size according to lug designs and makes the volume pin that is fit to it in advance;
2, lead-in wire and the ready sheet metal with the circuit protection plate welds together;
3, lug and lead-in wire connection sheet metal are carried out preliminary treatment: the dirt that it is surperficial and the oxide-film of metal surface are removed;
4, the sheet metal with positive and negative lug and lead-in wire connection is close together in certain sequence, is fixed with set mould;
5, the volume pin with winding apparatus is fixed together with stack pole piece well, adjusts rotating speed, starts winding apparatus then;
6, lug is reeled and is finished, and with sheet metal it is carried out mechanical consolidation and handles;
7, reinforce and to finish, above the wedge shape mouth that sees through set mould covered silica gel or other material, natural coagulation at room temperature reached the effect of sealing corrosion.
The dimensions of involved each several part is as follows in the said method:
Lug: thickness: 0.05-0.5mm, width does not have specific (special) requirements, and length is decided according to the coiling number of turns;
Circuit protection plate lead-in wire connects sheet metal: thickness: 0.05-0.5mm, width and length are decided according to the lug of being reeled.
Claims (1)
1. plate lug connecting method that is used for process of assembling power soft-packed lithium-ion storage batteries is characterized in that: may further comprise the steps:
1, the size according to lug designs and makes the volume pin that is fit to it in advance;
2, lead-in wire and the ready sheet metal with the circuit protection plate welds together;
3, the sheet metal to lug and lead-in wire connection carries out preliminary treatment: the dirt that it is surperficial and the oxide-film of metal surface are removed;
4, the sheet metal with positive and negative lug and lead-in wire connection is close together in certain sequence, is fixed with set mould;
5, the volume pin with winding apparatus is fixed together with stack pole piece well, adjusts rotating speed, starts winding apparatus then;
6, lug is reeled and is finished, and with sheet metal it is carried out mechanical consolidation and handles;
7, reinforce and to finish, above the wedge shape mouth that sees through set mould covered silica gel, natural coagulation at room temperature reached the effect of sealing corrosion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102328221A CN101692505B (en) | 2009-10-20 | 2009-10-20 | Plate lug connecting method used in process of assembling power soft-packed lithium-ion storage batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102328221A CN101692505B (en) | 2009-10-20 | 2009-10-20 | Plate lug connecting method used in process of assembling power soft-packed lithium-ion storage batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101692505A CN101692505A (en) | 2010-04-07 |
| CN101692505B true CN101692505B (en) | 2011-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102328221A Active CN101692505B (en) | 2009-10-20 | 2009-10-20 | Plate lug connecting method used in process of assembling power soft-packed lithium-ion storage batteries |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105576292A (en) * | 2015-09-21 | 2016-05-11 | 东莞市能优能源科技有限公司 | Method for processing high-rate polymer lithium ion battery pack and battery product with same |
| JP2019133741A (en) * | 2016-05-26 | 2019-08-08 | ヤマハ発動機株式会社 | Power storage module |
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Owner name: JIANGSU HUAFU ENERGY-STORAGE NEW TECHNOLOGY DEVELO Free format text: FORMER OWNER: JIANGSU HUAFU HOLDING GROUP CO., LTD. Effective date: 20120209 |
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Effective date of registration: 20120209 Address after: 225600 industrial concentration area of Gaoyou Town, Jiangsu, Gaoyou Patentee after: Jiangsu Huafu Power Storage New Technology Development Co., Ltd. Address before: 225600 Jiangsu Gaoyou Huafu Holding Group Co., Ltd., Gaoyou Town, Jiangsu Patentee before: Jiangsu Huafu Holding Group Co., Ltd. |
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Owner name: JIANGSU HUAFU STORED ENERGY NEW TECHNOLOGY CO., LT Free format text: FORMER NAME: JIANGSU HUAFU ENERGY-STORAGE NEW TECHNOLOGY DEVELOPMENT CO., LTD. |
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Address after: 225600, Gaoyou Town, Jiangsu City, Gaoyou province Yangzhou industrial concentration area Patentee after: Jiangsu Huafu Storage New Technology Co., Ltd. Address before: 225600 industrial concentration area of Gaoyou Town, Jiangsu, Gaoyou Patentee before: Jiangsu Huafu Power Storage New Technology Development Co., Ltd. |