CN201946701U - Polymer lithium ion battery - Google Patents
Polymer lithium ion battery Download PDFInfo
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- CN201946701U CN201946701U CN2011200066388U CN201120006638U CN201946701U CN 201946701 U CN201946701 U CN 201946701U CN 2011200066388 U CN2011200066388 U CN 2011200066388U CN 201120006638 U CN201120006638 U CN 201120006638U CN 201946701 U CN201946701 U CN 201946701U
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- ion battery
- polymer
- negative
- lug
- lithium ion
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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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Abstract
The utility model discloses a polymer lithium ion battery. The polymer lithium ion battery comprises an aluminium positive lug, a nickel negative lug and a battery body. The positive lug and the negative lug are respectively fixedly arranged on the battery body. The battery body comprises electrolyte, a packaging film, a diaphragm, a positive plate and a negative plate. The electrolyte is coated with the packaging film. The positive plate is connected with the positive lug. The negative plate is connected with the negative lug. The positive plate, the negative plate and the diaphragm are all fixed in the electrolyte and the diaphragm is positioned between the positive plate and the negative plate, wherein the width of the negative lug is larger than the width of the positive lug. By the polymer lithium ion battery, accumulation of local heat of the two lugs in the discharging process of the battery to damage relative electronic electrical devices can be avoided, the service life of the polymer lithium ion battery is prolonged and the service lives of the electronic electrical devices using the polymer lithium ion battery are also prolonged.
Description
Technical field
The utility model relates to field of electronics, relates more specifically to a kind of polymer Li-ion battery.
Background technology
Do not have lithium metal to exist in the lithium ion battery, have only lithium ion, thereby be referred to as lithium ion battery.The charge and discharge process of lithium ion battery is exactly the embedding of lithium ion and take off the embedding process.In the embedding of lithium ion with take off in the embedding process, the embedding of simultaneous and lithium ion equivalent electronics and take off embedding (anodal traditionally with embedding or take off embedding and represent, and negative pole with insertion or take off slotting the expression).In charge and discharge process, lithium ion comes and goes between positive and negative electrode and embeds/take off embedding and insertion/take off slotting.The lithium ion battery energy density is big, the average output voltage height, and self discharge is little, and usually every month self discharge of lithium ion battery does not have memory effect below 2% and can recover yet.But the superior fast charging and discharging of cycle performance, charge efficiency are up to 100%, and power output is big, and long service life does not contain poisonous harmful substance, is called as green battery.Therefore, the application of lithium ion battery in electronic enterprises now is extensive all the more.
Usually according to the used electrolyte difference of lithium ion battery, can be divided into liquid lithium ionic cell and polymer Li-ion battery two big classes.The used positive and negative pole material of polymer Li-ion battery is identical with liquid lithium ion.Their main distinction is electrolytical difference, what liquid lithium ionic cell used is liquid electrolyte, polymer Li-ion battery then replaces with solid polymer electrolyte, this polymer can be " dry state ", also can be " colloidal state " most of at present polymeric colloid electrolyte that adopts.Because polymer Li-ion battery has replaced liquid electrolyte with solid electrolyte, compare with liquid lithium ionic cell, but polymer Li-ion battery has advantages such as thin typeization, arbitrary areaization and arbitrary shapeization, can not produce the problem on the safety such as leakage and combustion explosion yet, therefore can be with plastic-aluminum combined thin film fabrication battery case, thus the specific capacity of entire cell can be improved.In addition, polymer Li-ion battery all increases than lithium ion battery at aspects such as operating voltage, charge and discharge circulation lifes.Polymer Li-ion battery has more high-energy-density, miniaturization, slimming, lightweight, high security, long circulation life and low cost.Based on above advantage, polymer Li-ion battery is described as lithium ion battery of future generation.
Polymer Li-ion battery commonly used now generally uses aluminium matter as positive pole, and nickel matter is as negative pole, and the specification shape of the lug of positive and negative polarities is identical.Many institutes week ground, the difference of the resistivity of aluminium and nickel is very big, and feasible resistance value with positive and negative polarities lug of same size shape also exists than big difference; Thereby when described polymer Li-ion battery in when discharge, on two lugs, will produce different heats, this battery discharge time is long more, the inhomogeneities of the heat that is produced on the lug further increases, the heat that is produced will be accumulated on a described lug, thereby produce the effect of local overheating, damage the electronic apparatus spare that is powered easily.
Therefore, be necessary to provide a kind of improved polymer Li-ion battery to overcome above-mentioned defective.
The utility model content
The purpose of this utility model provides a kind of polymer Li-ion battery, this polymer Li-ion battery can effectively be avoided the accumulation of two lug amount of localized heat in the discharge process of battery and damage the associated electrical electric device, improve the useful life of described polymer Li-ion battery, also prolonged the useful life of the electronic apparatus spare that uses this polymer Li-ion battery simultaneously.
For achieving the above object, the utility model provides a kind of polymer Li-ion battery, this polymer Li-ion battery comprises aluminium matter anode ear, nickel matter negative electrode lug and battery body, described anode ear and negative electrode lug are fixedly installed in respectively on the described battery body, described battery body comprises electrolyte, packaging film, barrier film, positive plate and negative plate, described packaging film coats described electrolyte, described positive plate is connected with described anode ear, described negative plate is connected with described negative electrode lug, described positive plate, negative plate and barrier film all are fixed in the described electrolyte, and described barrier film is between described positive plate and negative plate, wherein, the width of described negative electrode lug is greater than the width of described anode ear.
Preferably, the width of described anode ear is 3.0 millimeters, and the width of described negative electrode lug is 8.0 millimeters.
Compared with prior art, the utility model polymer Li-ion battery since the width of described negative electrode lug greater than the width of described anode ear, make the resistance value of nickel matter negative electrode lug reduce and approach the resistance value of aluminium matter anode ear, thereby when described polymer Li-ion battery when electronic apparatus spare is discharged, reduced the difference of the heat that on described anode ear and negative electrode lug, produced greatly, make the heat that is produced more balancedly be present on two lugs, the situation of amount of localized heat accumulation can not take place, therefore, polymer Li-ion battery of the present utility model can not damage electronic device in discharge process, guarantee the fail safe of its use, also prolonged the useful life of polymer Li-ion battery and associated electrical electric device.
By following description also in conjunction with the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used to explain embodiment of the present utility model.
Description of drawings
Fig. 1 is the structural representation of the utility model polymer Li-ion battery.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the utility model provides a kind of polymer Li-ion battery, this polymer Li-ion battery can effectively be avoided the accumulation of two lug amount of localized heat in the discharge process of battery and damage the associated electrical electric device, improve the useful life of described polymer Li-ion battery, also prolonged the useful life of the electronic apparatus spare that uses this polymer Li-ion battery simultaneously.
Please refer to Fig. 1, Fig. 1 is the structural representation of the utility model polymer Li-ion battery.As shown in the figure, the utility model polymer Li-ion battery comprises: anode ear 110, negative electrode lug 120 and battery body 200, described anode ear 110 is fixedly installed in respectively on the described battery body 200 with negative electrode lug 120.Wherein, described battery body 200 comprises packaging film 210, electrolyte (figure does not show), barrier film (figure does not show), positive plate (figure does not show) and negative plate (figure does not show); Described packaging film 210 coats described electrolyte, to protect whole described battery body 200; Described positive plate is connected with described anode ear 110, described negative plate is connected with described negative electrode lug 120, and in all described regularly electrolyte of described positive plate and negative plate, thereby the electricity that described electrolyte, positive plate and negative plate produce after electrolysis is given with the power supply of electronics electric device, to realize the function of described polymer Li-ion battery by described anode ear 110 and negative electrode lug 120; Described barrier film is fixed in the described electrolyte, and between described positive plate and negative plate, described barrier film can allow ion to pass through but not allow electronics to pass through, thereby guarantees normally carrying out of described polymer Li-ion battery charge and discharge process.In addition, the described anode ear 110 of described polymer Li-ion battery of the present utility model constitutes for aluminum material, and described negative electrode lug 120 constitutes for the nickel material; And described negative electrode lug 120 and described anode ear 110 have identical length and height, but the width of described negative electrode lug 120 is greater than the width of described anode ear 120, and particularly, the width of described anode ear is 3.0 millimeters, and the width of described negative electrode lug is 8.0 millimeters; As everyone knows, the resistivity of nickel is greater than the resistivity of aluminium, the resistance value that is to say nickel material is greater than the aluminum that has equal length and cross-sectional area with it, in polymer Li-ion battery of the present utility model, the width of the negative electrode lug 120 of nickel matter is greater than the anode ear 110 of aluminium matter, make the cross-sectional area of described negative electrode lug 120 greater than the cross-sectional area of described anode ear 110, thereby when battery discharge is worked, the ratio of the heating power of positive and negative lug is 1: 0.968, differ seldom, therefore the heat that is produced in the discharge process will be present on two lugs more equably, the situation of heat localized accumulated can not take place, just can not cause damage yet, improve the fail safe that described polymer Li-ion battery uses, prolong the useful life of polymer Li-ion battery and associated electrical electric device yet the associated electrical electric device.
Charge and discharge process and principle that the utility model polymer Li-ion battery is concrete all are well known to those skilled in the art, and just no longer add explanation at this.
Abovely the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contains various modification, equivalent combinations of carrying out according to essence of the present utility model in conjunction with most preferred embodiment.
Claims (2)
1. polymer Li-ion battery, comprise aluminium matter anode ear, nickel matter negative electrode lug and battery body, described anode ear and negative electrode lug are fixedly installed in respectively on the described battery body, described battery body comprises electrolyte, packaging film, barrier film, positive plate and negative plate, described packaging film coats described electrolyte, described positive plate is connected with described anode ear, described negative plate is connected with described negative electrode lug, described positive plate, negative plate and barrier film all are fixed in the described electrolyte, and described barrier film is between described positive plate and negative plate, it is characterized in that the width of described negative electrode lug is greater than the width of described anode ear.
2. polymer Li-ion battery as claimed in claim 1 is characterized in that, the width of described anode ear is 3.0 millimeters, and the width of described negative electrode lug is 8.0 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200066388U CN201946701U (en) | 2011-01-11 | 2011-01-11 | Polymer lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200066388U CN201946701U (en) | 2011-01-11 | 2011-01-11 | Polymer lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946701U true CN201946701U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200066388U Expired - Fee Related CN201946701U (en) | 2011-01-11 | 2011-01-11 | Polymer lithium ion battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN201946701U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10103385B2 (en) | 2012-04-16 | 2018-10-16 | Lg Chem, Ltd. | Electrode assembly including cathode and anode having different welding portion shapes and secondary battery including the same |
| WO2023134480A1 (en) * | 2022-01-12 | 2023-07-20 | 宁德时代新能源科技股份有限公司 | Electrode assembly, battery cell, battery, and electrical device |
-
2011
- 2011-01-11 CN CN2011200066388U patent/CN201946701U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10103385B2 (en) | 2012-04-16 | 2018-10-16 | Lg Chem, Ltd. | Electrode assembly including cathode and anode having different welding portion shapes and secondary battery including the same |
| WO2023134480A1 (en) * | 2022-01-12 | 2023-07-20 | 宁德时代新能源科技股份有限公司 | Electrode assembly, battery cell, battery, and electrical device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20160111 |