CN201946663U - Semicircular-unreel coated aluminum lug - Google Patents
Semicircular-unreel coated aluminum lug Download PDFInfo
- Publication number
- CN201946663U CN201946663U CN2010205101665U CN201020510166U CN201946663U CN 201946663 U CN201946663 U CN 201946663U CN 2010205101665 U CN2010205101665 U CN 2010205101665U CN 201020510166 U CN201020510166 U CN 201020510166U CN 201946663 U CN201946663 U CN 201946663U
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- Prior art keywords
- battery
- lug
- backrush
- coating
- ion battery
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- 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.)
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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
Abstract
The utility model belongs to the field of battery manufacturing and relates to a semicircular-unreel coated aluminum lug. The semicircular-unreel coating aluminum lug is characterized in that the base material of the aluminum lug is a strip-shaped aluminum sheet; one end of the strip-shaped aluminum sheet is connected with the positive pole piece of a lithium battery; the other end of the strip-shaped aluminum sheet is coated with an electroplated layer and rolled back like a semicircle; and the section of the other end is welded with an unreel front lug and a welding spot is arranged at the center. Simulation tests show that the temperature of a dual-rectangular coated aluminum lug is at least 4.5 DEG C lower than the temperature of an elongated nickel plated aluminum lug with dimension of 30mm*3mm (length*width) after 5-ampere current passes through so that the security of the batteries is improved.
Description
Technical field
The invention belongs to technical field of battery manufacture, relate to the semicircle backrush coating aluminium pole ears that a kind of lithium battery uses, this kind aluminium pole ears is specially adapted to different lithium battery of battery structure or lithium ion battery, and practicality is extensive.
Background technology
The fast development of mobile electronic equipment is had higher requirement to lithium battery and lithium ion battery.For the convenience of explaining, lithium battery described here comprises the lithium battery and the lithium ion battery of ordinary meaning, and wherein lithium ion battery comprises polymer Li-ion battery, flexible packing lithium ion battery, box hat lithium ion battery and plastic housing lithium ion battery.Profile according to battery is divided, and lithium battery mainly contains cylindrical, prismatic, square, button, slim and ultrathin on the overseas market at present.The lithium battery of domestic market mainly contains three types, i.e. button, square and cylindrical.According to the requirement difference of environment for use to lithium battery chemical property and fail safe, lithium battery is divided into liquid and solid-state (or dry state) two kinds.Because the energy density of battery and the influence of the internal structure that applicable scope is subjected to battery are very big.From the structure of lithium ion battery, mainly be divided into takeup type and stacked two big classes.When preparation lithium battery and lithium ion battery, at first make anode pole piece and cathode pole piece, adopt modes such as riveted joint, ultrasonic spot welding or Laser Welding again, on anode pole piece, connect and be used for the aluminium pole ears of transmission current, at an end that connects the nickel lug on the aluminium pole ears with modes such as riveted joint, ultrasonic spot welding or Laser Welding, the other end with the nickel lug is connected on the IC circuit board at last then.Anode pole piece is to having " aluminium-aluminium ", " aluminium-nickel ", " nickel-copper " tie point or solder joint between the IC circuit board.Because these tie points or solder joint belong to a connection, the area of tie point or solder joint is little, resistance is big, tie point or solder joint are easy to make the battery of preparation have problems such as batch unstable properties problem such as depositing or use is oxidized to exist connection or not prison welding, virtual connections or rosin joint, tie point or solder joint to get an electric shock indirectly.During battery discharge, particularly during heavy-current discharge, tie point or solder joint exist resistance excessive, inhomogeneous, cause problems such as caloric value is excessive, have obviously weakened the battery ability of externally doing work, and the insecurity that battery uses strengthens.In when charging, may exist the problems referred to above to cause the charging difficulty because of tie point or solder joint, cause the potential safety hazards such as heating, burning of battery.For this reason, in recent years, some researchers attempt nickel plating or other alloy on aluminium pole ears, with the purpose that realizes simplifying the preparation process of battery and improve the batch battery consistency.
Because anode pole piece mainly plays conduction and thermolysis to the connecting portion between the IC circuit board.When high current charge-discharge, above connecting portion may be subjected to the influence of thermal expansion, the quality of switching performance can cause the variation of tie point contact resistance, therefore, in the lithium battery that adopts the coating aluminium pole ears, the resistivity, conductive coefficient and the coefficient of linear expansion that form alloy interface and coating itself between aluminum strip, aluminium and the coating are all influential to conduction and thermolysis.
As seen, adopt in the lithium battery of nickel-plated aluminum lug, the resistivity maximum of the alloy-layer in the middle of nickel coating and the aluminum strip often, the heat maximum that produces, radiating effect is bad, therefore, and the nickel-plated aluminum lug of onesize strip, under the heavy-current discharge condition, still produce high temperature because of heating easily.
Consider the structure difference of the lithium battery that different battery enterprise produces, even the lithium battery that same enterprise produces also needs to adopt according to battery types, battery structure the lug of different size, therefore being necessary for each lithium battery makes lug to measure.
In order to overcome above deficiency, reduce aluminium use amount, aluminium radiating rate, lug size taking into account, particularly consider the standardization of lug preparation, the waste of lug when avoiding battery enterprise to change the battery product kind, patent of the present invention relates to a kind of semicircle backrush coating aluminium pole ears.In semicircle backrush coating aluminium pole ears, although the resistivity of the alloy-layer in the middle of coating and the aluminum strip is bigger, yet, since circuit board to the conducting surface in coating district between the anode pole piece than the increase of long strip type lug one times, radiating surface has also increased nearly one times, even under the condition of heavy-current discharge, be not easy to have improved the fail safe of battery because of heating produces high temperature.Simultaneously, the structure of semicircle backrush coating aluminium pole ears can be applicable in the not homostructural battery it, helps the standardization and the use of lug preparation.
Summary of the invention
The invention provides a kind of semicircular in shape backrush coating aluminium pole ears.
Semicircle backrush coating aluminium pole ears of the present invention, its basis material is a strip form aluminium flake, a termination of strip form aluminium flake links to each other with the lithium battery anode pole piece; Another termination is coated with conductive coating, lug welding before this termination semicircular in shape backrush, the section of termination and backrush, and the center is a solder joint.
Described conductive coating, this conductive coating are by nickel, nickel alloy, copper or the copper alloy electroplated or the method for chemical plating plates.
Described lithium battery comprises the lithium battery and the lithium ion battery of ordinary meaning, and the lithium ion battery here is polymer Li-ion battery, flexible packing lithium ion battery, box hat lithium ion battery or plastic housing lithium ion battery.
In semicircle backrush coating aluminium pole ears, although the resistivity of the alloy-layer that forms in the middle of coating and the aluminum strip is relatively large, yet, because circuit board has increased by one times to the conducting surface in coating district between the anode pole piece, radiating surface has also increased nearly one times, even under the condition of heavy-current discharge, be not easy to have improved the fail safe of battery because of heating produces high temperature.The structure of semicircle backrush coating aluminium pole ears can make it be applicable to the not structure of battery of the same race simultaneously, helps the standardization and the use of aluminium pole ears preparation.
Description of drawings
Fig. 1 is the perspective view of semicircle backrush coating aluminium pole ears of the present invention.
Fig. 2 is the longitudinal sectional drawing of the hook-shaped coating aluminium pole ears of semicircle backrush of the present invention.
Among Fig. 1,1 is strip form aluminium flake; 2 solder joints for backrush broken end section central point, this solder joint links to each other with coating before the backrush; 3 is conductive coating, and this conductive coating is by nickel, nickel alloy, copper or the copper alloy electroplated or the method for chemical plating plates; 4 are the solder joint of backrush central spot, and this solder joint links to each other with circuit board.
Embodiment
Below in conjunction with the drawings and specific embodiments patent of the present invention is further detailed.Embodiment only is to further the replenishing and explanation of patent of the present invention, rather than to the restriction of patent of the present invention.
As shown in Figures 1 and 2, the overall size of strip form aluminium flake 1 is 35mm * 3mm (long * wide), and wherein an end of strip form aluminium flake 1 is long is 20mm, and this termination links to each other with the box hat anode slice of lithium ion battery in the mode of welding during use; The other end of strip form aluminium flake 1 is long to be to adopt the method plated with nickel of chemical plating to form nickel coating by 15mm, and turns up semicircle, and terminal section and lug coating are overlapping, and the weldering of two coating is firmly up and down with laser-beam welding machine turning up place's central point.It is solder joint 4 that semicircle backrush plays central spot, links to each other with circuit board by this solder joint.
Utilize semicircle backrush coating aluminium pole ears of the present invention, through simulation test, after passing through 5 Ampere currents, the temperature ratio that square shape returns the hook-shaped coating aluminium pole ears of type is of a size of low 4.8 ℃ of the temperature of the strip nickel-plated aluminum lug of 25mm * 3mm (long * wide), and preparation technology is more simple, the space that lug occupies is little, has improved the fail safe of battery.
Claims (3)
1. semicircle backrush coating aluminium pole ears, it is characterized in that: its basis material is a strip form aluminium flake, a termination of strip form aluminium flake links to each other with the lithium battery anode pole piece; Another termination is coated with conductive coating, lug welding before this termination semicircular in shape backrush, the section of termination and backrush, and the center is a solder joint.
2. semicircle backrush coating aluminium pole ears according to claim 1, it is characterized in that: described lithium battery comprises lithium battery and lithium ion battery, and the lithium ion battery here is polymer Li-ion battery, flexible packing lithium ion battery, box hat lithium ion battery or plastic housing lithium ion battery.
3. semicircle backrush coating aluminium pole ears according to claim 1 is characterized in that: described conductive coating, this conductive coating are by nickel, nickel alloy, copper or the copper alloy electroplated or the method for chemical plating plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205101665U CN201946663U (en) | 2010-08-31 | 2010-08-31 | Semicircular-unreel coated aluminum lug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205101665U CN201946663U (en) | 2010-08-31 | 2010-08-31 | Semicircular-unreel coated aluminum lug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946663U true CN201946663U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205101665U Expired - Fee Related CN201946663U (en) | 2010-08-31 | 2010-08-31 | Semicircular-unreel coated aluminum lug |
Country Status (1)
| Country | Link |
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| CN (1) | CN201946663U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784562A (en) * | 2016-12-13 | 2017-05-31 | 芜湖天量电池系统有限公司 | A kind of electrical connection module of lithium battery |
-
2010
- 2010-08-31 CN CN2010205101665U patent/CN201946663U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784562A (en) * | 2016-12-13 | 2017-05-31 | 芜湖天量电池系统有限公司 | A kind of electrical connection module of lithium battery |
| CN106784562B (en) * | 2016-12-13 | 2023-01-06 | 芜湖天量电池系统有限公司 | Electric connection assembly of lithium 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: 20110824 Termination date: 20130831 |