CN201320665Y - Novel welding pin for welding bottoms of cylindrical lithium ion batteries - Google Patents
Novel welding pin for welding bottoms of cylindrical lithium ion batteries Download PDFInfo
- Publication number
- CN201320665Y CN201320665Y CNU200820169810XU CN200820169810U CN201320665Y CN 201320665 Y CN201320665 Y CN 201320665Y CN U200820169810X U CNU200820169810X U CN U200820169810XU CN 200820169810 U CN200820169810 U CN 200820169810U CN 201320665 Y CN201320665 Y CN 201320665Y
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- welding
- capillary
- lithium ion
- novel
- ion battery
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Abstract
The utility model discloses a novel welding pin for welding the bottoms of cylindrical lithium ion batteries, which is formed by a welding pin, an electrical conductor connected to the top of the welding pin and a welding electrode connected to the bottom of the welding pin. The welding pin and the electrical conductor are made of materials with high electric conductivity and high heat transfer property such as red coppers or yellow brasses, the wielding electrode are made of materials with high resistance and low heat transfer property such as chromium zircomium coppers, tungsten coppers, tungsten or molybdenum, and diameters of the welding pin and the welding electrode are equal, and the welding pin structure can increase welding stability and reliability when being welded with multiple layers of red coppers or nickel and the like, thereby enabling welding to be stable, achieving better welding effect and increasing pass percent of batteries. Simultaneously, the improved structure has the advantages of fine interchangeability, simple manufacturing and the like.
Description
Technical field
The utility model relates to the technical field of a kind of lithium ion battery bottom welding, refers in particular to the novel capillary of a kind of column lithium ion battery bottom welding usefulness.
Background technology
Along with the development of removable electric tool and other high-multiplying power discharge articles for use and the enhancing of environmental consciousness, the battery that is used for high-multiplying power discharge changes to the lithium ion battery of more high-energy-density and environmental protection fast from the common batteries of ni-mh and NI-G, and these batteries are with column lithium ion battery, are main as 18650,26650.Very high for the requirement of power tool battery discharge-rate, be example with 18650 of 1200mAh, the discharge maximum current can reach 20A, big battery discharge like this, the internal resistance of battery is very big to the discharge performance influence of battery, and internal resistance is more little, and the battery high-rate discharge capacity is strong more.And the high-magnification cylindrical battery that generally uses in the market all is to adopt the bottom capillary of homogenous material making to weld, and occurs not prison welding easily or crosses the phenomenon of weldering, causes the defective that welding stability is poor, qualification rate is low.Special a kind of column lithium ion battery for high-multiplying power discharge, in order to reduce the internal resistance of battery own, general one or more the copper material conduction lug that adopts, owing to adopt copper lug and many extreme ear structures, increased the welding difficulty between battery bottom and the lug especially, so only adopt existing capillary to be difficult to reach welding effect preferably.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defective of prior art and provides that a kind of firm welding is reliable, the novel capillary of the column lithium ion battery of good stability bottom welding usefulness
Technical problem of the present utility model is achieved through the following technical solutions:
The novel capillary of a kind of column lithium ion battery bottom welding usefulness comprises capillary, it is characterized in that described capillary top is connected with electric conductor, and the capillary bottom is connected with welding electrode.
Being connected of described capillary and electric conductor, capillary is threaded with being connected to of welding electrode or weld or rivet.
Described capillary and electric conductor are made by the material of high conductivity, high thermal conductivity.
Described high conductivity, high thermal conductivity material are red copper or brass.
Described welding electrode is made by the material of high resistance, low heat conduction.
Described high resistance, low Heat Conduction Material are chromium zirconium copper, tungsten copper, tungsten or molybdenum.
The equal diameters of described capillary and welding electrode is Φ 1～Φ 10mm.
The length of described welding electrode is 1～5mm.
Compared with prior art, the utility model has improved the capillary structure, connect electric conductor at the capillary top, the bottom connects welding, and electric conductor and capillary all adopt high conductivity, high thermal conductivity material to make simultaneously, as red copper or brass etc., the welding electrode material adopts the material of high resistance, low heat conduction to make, such capillary structure can improve welding stability and reliability during for the red copper of welding battery bottom multilayer or nickel electrode, has effectively improved the qualification rate of battery.Structure after the improvement also has advantages such as interchangeability is good, manufacturing is simple.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.
As shown in Figure 1, the novel capillary of column lithium ion battery bottom welding usefulness, constitute by capillary 2 and the welding electrode 3 that is threaded in the electric conductor 1 at capillary top and is threaded in the capillary bottom, described electric conductor 1 adopts high conductivity, high thermal conductivity materials such as red copper or brass to make, can increase conductive area, reduce contact resistance each other, increase welding reliability.
Described capillary 2 diameters are Φ 1～Φ 10mm, also adopt high conductivity, high thermal conductivity materials such as red copper or brass to make, and main effect is to reduce conductive resistance, and the high temperature of flash heat transfer when avoiding welding damages battery.
Described welding electrode 3 length are 1～5mm, diameter equates with capillary, adopt welding materials such as chromium zirconium copper, tungsten copper, tungsten, molybdenum to make, purpose is the wearability that increases capillary, strengthens service life, conductive resistance when increasing welding between electrode bottom and the lug (nickel strap or copper strips) improves welding reliability.Utilize column lithium ion battery bottom firm welding, good stability, battery qualification rate height, the reliable in quality of this capillary structure welding.
Claims (8)
1, a kind of novel capillary of column lithium ion battery bottom welding usefulness comprises capillary (2), it is characterized in that described capillary top is connected with electric conductor (1), and the capillary bottom is connected with welding electrode (3).
2, the novel capillary of column lithium ion battery according to claim 1 bottom welding usefulness is characterized in that being connected of described capillary (2) and electric conductor (1), capillary (2) is threaded with being connected to of welding electrode (3) or weld or rivet.
3, the novel capillary of column lithium ion battery according to claim 1 and 2 bottom welding usefulness is characterized in that described capillary (2) and electric conductor (1) made by the material of high conductivity, high thermal conductivity.
4, the novel capillary of column lithium ion battery bottom welding usefulness according to claim 3 is characterized in that described high conductivity, high thermal conductivity material are red copper or brass.
5, the novel capillary of column lithium ion battery according to claim 1 and 2 bottom welding usefulness is characterized in that described welding electrode (3) made by the material of high resistance, low heat conduction.
6, the novel capillary of column lithium ion battery bottom welding usefulness according to claim 5 is characterized in that described high resistance, low Heat Conduction Material are chromium zirconium copper, tungsten copper, tungsten or molybdenum.
7, weld the novel capillary of usefulness bottom the column lithium ion battery according to claim 1 and 2, it is characterized in that the equal diameters of described capillary (2) and welding electrode (3), be Φ 1～Φ 10mm.
8, the novel capillary of column lithium ion battery bottom welding usefulness according to claim 1 and 2, the length that it is characterized in that described welding electrode (3) is 1～5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820169810XU CN201320665Y (en) | 2008-12-05 | 2008-12-05 | Novel welding pin for welding bottoms of cylindrical lithium ion batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820169810XU CN201320665Y (en) | 2008-12-05 | 2008-12-05 | Novel welding pin for welding bottoms of cylindrical lithium ion batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201320665Y true CN201320665Y (en) | 2009-10-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820169810XU Expired - Fee Related CN201320665Y (en) | 2008-12-05 | 2008-12-05 | Novel welding pin for welding bottoms of cylindrical lithium ion batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201320665Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101992360A (en) * | 2010-11-09 | 2011-03-30 | 深圳市豪鹏科技有限公司 | Capillary and preparation method thereof |
| CN102039479A (en) * | 2010-12-20 | 2011-05-04 | 福建海峡科化股份有限公司 | Method for stored-energy welding of copper leg wire-nichrome wire |
| CN104057211A (en) * | 2013-03-21 | 2014-09-24 | 浙江南博电源科技有限公司 | Spot bottom welding pin of cylindrical lithium ion battery as well as welding method |
| CN105710545A (en) * | 2014-12-03 | 2016-06-29 | 长沙华恒机器人系统有限公司 | Pole needle welding device |
| CN105965148A (en) * | 2016-05-27 | 2016-09-28 | 九江迅通新能源科技有限公司 | Welding needle for bottom welding of cylindrical 18650 lithium ion battery |
-
2008
- 2008-12-05 CN CNU200820169810XU patent/CN201320665Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101992360A (en) * | 2010-11-09 | 2011-03-30 | 深圳市豪鹏科技有限公司 | Capillary and preparation method thereof |
| CN102039479A (en) * | 2010-12-20 | 2011-05-04 | 福建海峡科化股份有限公司 | Method for stored-energy welding of copper leg wire-nichrome wire |
| CN104057211A (en) * | 2013-03-21 | 2014-09-24 | 浙江南博电源科技有限公司 | Spot bottom welding pin of cylindrical lithium ion battery as well as welding method |
| CN105710545A (en) * | 2014-12-03 | 2016-06-29 | 长沙华恒机器人系统有限公司 | Pole needle welding device |
| CN105965148A (en) * | 2016-05-27 | 2016-09-28 | 九江迅通新能源科技有限公司 | Welding needle for bottom welding of cylindrical 18650 lithium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20121205 |