CN108284263A - A kind of welding procedure of lithium battery connector - Google Patents
A kind of welding procedure of lithium battery connector Download PDFInfo
- Publication number
- CN108284263A CN108284263A CN201810057875.3A CN201810057875A CN108284263A CN 108284263 A CN108284263 A CN 108284263A CN 201810057875 A CN201810057875 A CN 201810057875A CN 108284263 A CN108284263 A CN 108284263A
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- battery connector
- segment
- welding procedure
- connector according
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- 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
- H01M10/0404—Machines for assembling batteries
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- 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
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a kind of welding procedures of lithium battery connector, which is characterized in that is including step：Lithium battery connector includes external terminal and inner terminal, produces the external terminal and the inner terminal；It is preheated, sets first segment heating temperature and second segment heating temperature, opened the cooling of third section, be passed through inert gas；Solder is placed in the reserved space of the external terminal or/and the inner terminal, is assembled, the lithium battery accessory assembled is heated by the first segment and the second segment successively, using the three-stage cooling, the lithium battery connector that is welded.By the above-mentioned means, the welding procedure of the lithium battery connector of the present invention, is easy to be welded, directly the component of lithium ion connector can be welded, can realize and be welded while multiple lithium ion connectors, realize mass production, input cost is small, meets the needs of in production.
Description
Technical field
The present invention relates to lithium batteries to assemble technology field, more particularly to a kind of welding procedure of lithium battery connector.
Background technology
Earliest period automobile is typically all to use lead-acid accumulator as electrical source of power, but lead-acid accumulator has capacity density
It is low, weight is big, monomer voltage is low, pollution environment the shortcomings of can not overcome.With the development of new science and technology, lithium battery technology slowly exists
The utilization of automobile power field of power supplies is more and more ripe, and lithium battery is because its terminal voltage is high, bigger than energy, charge discharge life is long, puts
The advantages that electric performance stablity, self-discharge rate are low and environmentally safe, is widely used in terms of automobile power at present.
It is with by multiple lithiums electricity to make these rechargeable lithium batteries have enough battery capacities, general automobile power cell
The form of battery pack made of the monomer link of pond exists.As the power resources of automobile, the environment residing for battery pack is more severe,
The security performance of battery pack is required very high.Metal parts for single battery connection is known as battery contact.It is traditional have with
Connection sheet is as connector, and there are hidden danger in terms of the reliability of battery pack for this mode.It fully takes into account conductivity and electricity is rotten
Factor in terms of erosion and battery reliability, the lithium battery connector now used at present are generally divided into two parts, and a part is external terminal,
A part is inner terminal, and two parts assembly welding is lithium battery connector together.The material that positive electrode and negative electrode connector uses
It is not quite similar, the preferred material of general aluminium and its aluminium alloy, copper and its copper alloy and nickel as connector.What is be welded in this way connects
There is no gap between head, without electrochemical corrosion, resistance is small, so calorific value is also small, substantially increase battery use it is reliable
Property.
Qualified lithium battery jointing requirements are higher, when charging and discharging due to battery, pass through the electric current of battery contact
Very big, this requires battery contacts to need very low resistivity, to meet resistivity ＜ 0.03m Ω；Due to being mounted on automobile
Battery pack can all be shaken at any time with automobile, so battery contact has to meet certain physical strength, this will
The torque ＞ 5N.m of the battery contact weld after welding, thrust is asked to meet ＞ 500N.But qualified connector is welded
It is not an easy thing, the especially welding between copper and aluminium alloy, due to the physical property and chemical property between the two
It differs greatly, the welding difficulty of aluminium alloy is also big in addition, leads to the welding skill that can mutually weld together completely therebetween
Art is fewer and fewer.Disclosure satisfy that the welding technique technique of welding requirements is exactly friction-welding technique at present, advantage be metal be
The class forging state solid diffusivity realized under hot plastic state, has quality of weld joint high --- weld strength and matrix material can be reached
Expect equal strength, welding efficiency height, stable quality, consistency are good, it can be achieved that welding dissimilar materials etc.；Friction welding is high-quality with its,
Efficiently, energy saving, free of contamination technical characteristic, it is deep by manufacturing attention.The disadvantage is that being realized by workpiece rotation, on-circular cross-section is welded
It is more difficult.And lithium battery accessory is small, is thus difficult welding due to being not easy clamping.Most importantly friction-welding machine is disposably thrown
Provide it is expensive, every time welding be all merely able to realize a battery contact welding, this welding procedure can not meet at all lithium electricity
The needs of pond connector batch production.
Invention content
The invention mainly solves the technical problem of providing a kind of welding procedures of lithium battery connector, can realize lithium battery
The batch production of connector.
In order to solve the above technical problems, one aspect of the present invention is：A kind of weldering of lithium battery connector is provided
Technique is connect, including step is：（1）Lithium battery connector includes external terminal and inner terminal, produces the external terminal and the inner terminal；
（2）It is preheated, sets first segment heating temperature and second segment heating temperature, opened the cooling of third section, be passed through inert gas；
（3）Solder is placed in the reserved space of the external terminal or/and the inner terminal, is assembled, the lithium battery that will be assembled
Accessory is heated by the first segment and the second segment successively, using the three-stage cooling, is welded
Lithium battery connector.
In a preferred embodiment of the present invention, step（1）Described in external terminal material be aluminium alloy, the inner terminal
Material be fine copper.
In a preferred embodiment of the present invention, step（1）Described in external terminal be sheet aluminium alloy external terminal, it is described
Inner terminal is cyclic annular or band-like fine copper inner terminal.
In a preferred embodiment of the present invention, step（2）With（3）Welding process be to be carried out in vacuum belt stove
's.
In a preferred embodiment of the present invention, step（2）In set first segment heating temperature and second segment heating temperature
Afterwards, temperature ensures that temperature difference of the arbitrary line distance between 2cm is less than 3 DEG C.
In a preferred embodiment of the present invention, step（2）Described in preheating time be 20-50 minutes.
In a preferred embodiment of the present invention, step（2）Described in the heating temperature that sets of first segment as 150 ~ 180 DEG C
± 5 DEG C, the heating temperature that the second segment is set is 360 ~ 420 DEG C ± 5 DEG C.
In a preferred embodiment of the present invention, step（2）Described in inert gas be nitrogen or argon gas.
In a preferred embodiment of the present invention, step（3）Described in the lithium battery accessory that assembles during heating
The speed of service be 1.2 ~ 2.0m/min.
In a preferred embodiment of the present invention, step（3）Described in the resistivity ＜ of lithium battery joint that is welded
0.03m Ω, torque are more than 5N.m, and thrust is more than 500N.
The beneficial effects of the invention are as follows：The welding procedure of the lithium battery connector of the present invention, is easy to be welded, can be direct
The component of lithium ion connector is welded, can realize and be welded while multiple lithium ion connectors, realizes mass production, input
Cost is small, meets the needs of in production.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
All other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects
It encloses.
A kind of welding procedure of lithium battery connector is provided, including step is：
（1）Lithium battery connector includes external terminal and inner terminal, according to the needs of welding procedure, produces and meets the outer of welding procedure
Terminal and inner terminal, in the present embodiment, the external terminal are the aluminium flake of aluminum alloy material, and the inner terminal is fine copper ring, is led to
The lithium battery connector for crossing 10 small lots of welding illustrates.
（2）It is welded in vacuum belt stove, opens vacuum belt stove and preheat 30min, set first segment furnace temperature as 160
DEG C ± 5 DEG C, second segment furnace temperature is set as 400 DEG C ± 5 DEG C, sets temperature difference of the arbitrary line distance between 2cm in rear stove
It is less than 3 DEG C, opens third section cold-air temperature-reducing device, opens inert gas, nitrogen is injected in stove.
（3）Solder is placed in the reserved space of the fine copper ring, is assembled with aluminium flake, carry out weld preparation.
（4）After vacuum belt stove is preheated, the lithium battery accessory batch assembled is placed in pallet, pallet is placed again
On the conveyer belt of vacuum belt stove, the belt speed for adjusting soldering furnace is 1.5m/min, passes through the first segment and described the successively
Two sections are heated, and the welding between lithium battery connector copper and aluminium alloy directly may be implemented.
（5）The lithium battery connector being welded is after cold-air temperature-reducing device, and the cooling lithium battery being just welded, is protected in time
It can be cooled to room temperature in the card alloy shortest time.
（6）By this welding process flow, the lithium battery joint after welding is satisfied by resistivity ＜ 0.03m Ω, torque
The requirement of ＞ 5N.m, thrust ＞ 500N, specifically see the table below.
One, resistivity（mΩ）Experimental data
Four points for choosing welding portion, are detected.
Two, torque（N.m）Experimental data
Carry out torsion confirmation.
Three, thrust（N）Experimental data
Carry out thrust confirmation.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (10)
1. a kind of welding procedure of lithium battery connector, which is characterized in that be including step：（1）Lithium battery connector includes external terminal
And inner terminal, produce the external terminal and the inner terminal；（2）It is preheated, sets first segment heating temperature and second segment adds
Hot temperature opens the cooling of third section, is passed through inert gas；（3）Solder is placed in the pre- of the external terminal or/and the inner terminal
It in spacing, is assembled, the lithium battery accessory assembled is heated by the first segment and the second segment successively,
Using the three-stage cooling, the lithium battery connector that is welded.
2. the welding procedure of lithium battery connector according to claim 1, which is characterized in that step（1）Described in external terminal
Material be aluminium alloy, the material of the inner terminal is fine copper.
3. the welding procedure of lithium battery connector according to claim 2, which is characterized in that step（1）Described in external terminal
For the aluminium alloy external terminal of sheet, the inner terminal is cyclic annular or band-like fine copper inner terminal.
4. the welding procedure of lithium battery connector according to claim 1, which is characterized in that step（2）With（3）Welding
Journey carries out in vacuum belt stove.
5. the welding procedure of lithium battery connector according to claim 1, which is characterized in that step（2）In set first segment
After heating temperature and second segment heating temperature, temperature ensures that temperature difference of the arbitrary line distance between 2cm is less than 3 DEG C.
6. the welding procedure of lithium battery connector according to claim 1, which is characterized in that step（2）Described in when preheating
Between be 20-50 minutes.
7. the welding procedure of lithium battery connector according to claim 1, which is characterized in that step（2）Described in first segment
The heating temperature set is 150 ~ 180 DEG C ± 5 DEG C, and the heating temperature that the second segment is set is 360 ~ 420 DEG C ± 5 DEG C.
8. the welding procedure of lithium battery connector according to claim 1, which is characterized in that step（2）Described in indifferent gas
Body is nitrogen or argon gas.
9. the welding procedure of lithium battery connector according to claim 1, which is characterized in that step（3）Described in assemble
The lithium battery accessory speed of service during heating be 1.2 ~ 2.0m/min.
10. the welding procedure of lithium battery connector according to claim 1, which is characterized in that step（3）Described in be welded
Lithium battery joint resistivity ＜ 0.03m Ω, torque be more than 5N.m, thrust be more than 500N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810057875.3A CN108284263A (en) | 2018-01-22 | 2018-01-22 | A kind of welding procedure of lithium battery connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810057875.3A CN108284263A (en) | 2018-01-22 | 2018-01-22 | A kind of welding procedure of lithium battery connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108284263A true CN108284263A (en) | 2018-07-17 |
Family
ID=62835475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810057875.3A Pending CN108284263A (en) | 2018-01-22 | 2018-01-22 | A kind of welding procedure of lithium battery connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108284263A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008152678A1 (en) * | 2007-06-13 | 2008-12-18 | Eco. & Engineering Co., Ltd. | Solar battery element connecting method and connecting apparatus |
| CN202957317U (en) * | 2012-12-06 | 2013-05-29 | 上海航天电源技术有限责任公司 | Soldering type lithium ion battery module |
| CN104393347A (en) * | 2014-10-27 | 2015-03-04 | 江苏津谊新能源科技有限公司 | Manufacturing method of novel lithium ion battery |
| CN205050913U (en) * | 2015-10-20 | 2016-02-24 | 中航锂电（洛阳）有限公司 | Lithium battery module is with compound busbar and lithium battery module |
| CN105679989A (en) * | 2016-03-16 | 2016-06-15 | 惠州亿纬科技有限公司 | Manufacturing method of battery electrode terminal |
| CN106784563A (en) * | 2016-12-24 | 2017-05-31 | 东莞市卓安精机自动化设备有限公司 | A kind of lithium battery module bus-bar attachment structure |
| CN107275557A (en) * | 2017-08-03 | 2017-10-20 | 深圳市新昊青科技有限公司 | Universal rechargeable battery and its assemble method that a kind of use lithium-ion electric core is constituted |
| CN107598372A (en) * | 2017-09-18 | 2018-01-19 | 武汉力唯新能源科技有限公司 | Cylindrical lithium battery lug draws method for laser welding |
-
2018
- 2018-01-22 CN CN201810057875.3A patent/CN108284263A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008152678A1 (en) * | 2007-06-13 | 2008-12-18 | Eco. & Engineering Co., Ltd. | Solar battery element connecting method and connecting apparatus |
| CN202957317U (en) * | 2012-12-06 | 2013-05-29 | 上海航天电源技术有限责任公司 | Soldering type lithium ion battery module |
| CN104393347A (en) * | 2014-10-27 | 2015-03-04 | 江苏津谊新能源科技有限公司 | Manufacturing method of novel lithium ion battery |
| CN205050913U (en) * | 2015-10-20 | 2016-02-24 | 中航锂电（洛阳）有限公司 | Lithium battery module is with compound busbar and lithium battery module |
| CN105679989A (en) * | 2016-03-16 | 2016-06-15 | 惠州亿纬科技有限公司 | Manufacturing method of battery electrode terminal |
| CN106784563A (en) * | 2016-12-24 | 2017-05-31 | 东莞市卓安精机自动化设备有限公司 | A kind of lithium battery module bus-bar attachment structure |
| CN107275557A (en) * | 2017-08-03 | 2017-10-20 | 深圳市新昊青科技有限公司 | Universal rechargeable battery and its assemble method that a kind of use lithium-ion electric core is constituted |
| CN107598372A (en) * | 2017-09-18 | 2018-01-19 | 武汉力唯新能源科技有限公司 | Cylindrical lithium battery lug draws method for laser welding |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180717 |
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| RJ01 | Rejection of invention patent application after publication |