CN200953358Y - High-multiplying power cylinder lithium ion battery - Google Patents
High-multiplying power cylinder lithium ion battery Download PDFInfo
- Publication number
- CN200953358Y CN200953358Y CNU2006200415903U CN200620041590U CN200953358Y CN 200953358 Y CN200953358 Y CN 200953358Y CN U2006200415903 U CNU2006200415903 U CN U2006200415903U CN 200620041590 U CN200620041590 U CN 200620041590U CN 200953358 Y CN200953358 Y CN 200953358Y
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- battery
- lithium ion
- ion battery
- collector
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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 relates to a reusable secondary power source (rechargeable battery) technique field, in particular to a high rate column lithium ion battery, which comprises an anode and a cathode pole piece. Each piece is equipped with two connectors, two ends of the cathode pole piece connector exceed anode and cathode pole piece, and the upper, lower end are separately welded on the sidewall and bottom of the battery shell, while the anode pole connector is welded on the cover the battery. The utility model solves the technical problem of poor high rate discharge performance of existing lithium ion battery with single connector; electric conduction and thermal conduction ability of the battery connector are greatly improved, making the battery more suitable for high rate discharge.
Description
Technical field:
The utility model relates to reusable secondary power supply (rechargeable battery) technical field, particularly a kind of high-magnification cylindrical lithium ion battery.
Background technology:
Lithium ion battery is the development of nineteen nineties Japan Sony Corporation and begins to realize commercial that its appearance is the once leap on the secondary cell development history.Lithium ion battery is in light weight with it, capacity is high, operating voltage is high, long service life and characteristics such as pollution-free and developed rapidly, and its global marketing volume has surpassed the summation of ni-mh, nickel-cadmium cell.There had been significant progress in China aspect the lithium ion battery industrialization in recent years, and 2003 gross annual output amounts have surpassed 2.5 hundred million, reach 600,000,000 production scale in 2005, caught up with and surpassed the advanced world level.
Electric tool in the past mainly uses NI-G, Ni-MH battery, and electric bicycle uses plumbic acid and Ni-MH battery, does not all use lithium ion battery, mainly is subjected to undesirable restriction of big multiplying power discharging property of lithium ion battery.
Following table is various battery performance contrasts:
| Performance | Lithium ion battery | Ni-H cell | Ickel-cadmium cell | Lead-acid battery | |
| Square | Cylinder | ||||
| Gravimetric specific energy (Wh/Kg) | 100～120 | 110～114 | 70 | 58 | 30 |
| Volumetric specific energy | 280～300 | 380 | 200 | 100 | 40 |
| (Wh/L) | |||||
| Average voltage (V) | 3.7 | 3.7 | 1.2 | 1.2 | 2 |
| Multiplying power discharging property | Bad | Bad | Good | Very good | Generally |
| Serviceability temperature (℃) | -20～60 | -20～60 | -20～40 | -40～60 | -20～50 |
| Memory effect | Do not have | Do not have | Do not have | Have | Do not have |
| Self discharge | ≤10％ | ≤10％ | ≤20％ | ≤20％ | ≥10％ |
| Shell | Aluminium, stainless steel, nickel plating | The nickel plating shell | The nickel plating shell | The nickel plating shell | Resin |
| Security performance | Safety | Safety | Safety | Safety | Safety |
| Environmental protection | Pollution-free | Pollution-free | Pollution-free | Pollution is arranged | Pollution is arranged |
See also Fig. 1,3,6, they are structural representations of existing cylindrical lithium ion battery.As shown in the figure: its positive pole has only a collector 1 to be welded on the block, and negative pole also has only 3 one solder joints of a collector to be welded on battery bottom.The collector 1,3 of this positive and negative electrode all has only an end to exceed positive and negative plate, and this welding manner is the multiple spot welding manner, and the material of this negative current collector 3 is nickel straps.But this lithium ion battery still has following defective:
1, the single current collector structure on the existing product positive and negative electrode, so, the current ratio that flows through every collector is bigger, and voltage drop thereon and caloric value are all higher, therefore, make the big multiplying power discharging property of lithium ion battery not good.
2, existing product uses the negative current collector of nickel material, and its electric conductivity and heat conductivility also are not fine.
3, the single current collector structure on the positive and negative electrode makes collector also have higher rosin joint probability.
The utility model content:
The purpose of this utility model is to provide a kind of high-magnification cylindrical lithium ion battery, mainly solve the not good technical problem of the big multiplying power discharging property of lithium ion battery of the single current collector structure on the existing positive and negative electrode, the collector of battery is more suitable for high-multiplying power discharge aspect conduction, the heat conductivility large increase having been arranged all.
For solving the problems of the technologies described above, the utility model is achieved in that
A kind of high-magnification cylindrical lithium ion battery, comprise positive and negative plate with collector, it is characterized in that: all have two collectors on this positive and negative plate, and the two ends of this negative current collector all exceed positive and negative plate, the upper/lower terminal of this negative current collector welds with the sidewall and the bottom of battery container respectively, and anodal collector then is welded on the block of battery.
Described high-magnification cylindrical lithium ion battery is characterized in that: this negative current collector is the ambrose alloy composite band.
Make the utility model at aspects such as conduction, heat conductivilitys large increase arranged all at the collector of battery by said structure, concrete technique effect can be consulted following table:
High-multiplying-power battery design contrast table:
| Performance comparison | Existing product | The utility model | |
| Plus plate current-collecting | Article | 1, | |
| Anodal direct current resistance | I* | 1/3I*R | |
| Negative current | Article | 1, | |
| With the housing number of | 1 | 4 points | |
| Negative pole direct current resistance | I* | 1/2I*R | |
| Anodal failure welding probability | 10 -3 | 10 -6 | |
| Negative pole failure welding probability | 10 -2 | 10 -8 |
Negative current collector material contrast table:
| Performance comparison | Existing product (nickel strap) | Copper strips | The utility model (copper nickel composite band) |
| Conductivity (IACS) | 20％ | 100％ | 80％ |
| Thermal conductivity | Generally | Good | Good |
| The weldability energy | Good | Bad | Good |
| Weld strength | Best | Bad | Good |
Description of drawings:
Fig. 1 is the structural representation of existing plus plate current-collecting body form.
Fig. 2 is the structural representation of plus plate current-collecting body form of the present utility model.
Fig. 3 is the structural representation of existing negative current collector form.
Fig. 4 is the structural representation of negative current collector form of the present utility model.
Fig. 5 is a structural representation of the present utility model.
Fig. 6 is the structural representation of existing lithium ion battery.
Among the figure:
The 1-plus plate current-collecting body;
The plus plate current-collecting body that 2-increases newly;
The 3-negative current collector;
The negative current collector that 4-increases newly;
The 5-battery positive terminal;
6-battery container (negative terminal).
Embodiment:
See also Fig. 2,4,5, they are structural representations of the utility model high-magnification cylindrical lithium ion battery.The utility model has kept most of structural design of existing lithium ion battery, but increase collector quantity, and do rational distribution, as Fig. 2 and shown in Figure 4, collector 3,4 two ends of negative pole have all exceeded negative plate, upper/lower terminal can be respectively amounts to 4 welding with the sidewall and the bottom of battery container, and anodal two collectors 1,2 all are welded on the block of battery.
Under the welding manner originally, positive pole has only a collector to be welded on the block, and negative pole has only solder joint of a collector to be welded on battery bottom.By above design, reduced the polarization of battery when big electric current flows through, the multiple spot welding greatly reduces the battery afflux liquid rosin joint and causes the bad ratio of battery performance, such as, the rosin joint probability of every negative current collector is 1%, and then the probability of 4 whole rosin joints of negative current collector is (1%)
4, in like manner, anodal design also makes the probability of its failure welding reduce greatly, makes battery more reliable, avoid when being used in combination, because of certain battery can not high magnification work reasons such as () nickel strap rosin joints cause the whole battery group cisco unity malfunction; Simultaneously, electric current is shunted by several collectors, and the current ratio that flows through every collector is less, and voltage drop so thereon and caloric value are all considerably less, and this is the necessary condition of high magnification working power; In addition, electric current flows on the box hat from collector, needs the solder joint by connecting, and the electric current that the design of many collectors has also guaranteed to flow through solder joint reducing at double more helps heavy-current discharge.In fact, the high magnification power supply needs most improvement is exactly contact internal resistance between each connector, because be the weakest tie point here, the maximum point of physics polarization just, therefore improving the physics polarization by the whole bag of tricks is a most important direction that improves the power supply high-power operation.
The material of negative current collector 3,4 is replaced with the ambrose alloy composite band by nickel strap, and comparatively speaking, copper has good conductivity and heat conductivility, but its directly the welding with box hat bottom, side is relatively more difficult; And use after the copper nickel composite band, then taken into account the characteristics of nickel strap and copper strips, its welding performance is increased.Through above design, the collector of battery is more suitable for high-multiplying power discharge aspect conduction, the heat conductivility large increase having been arranged all.
Being preferred embodiment of the present utility model only in sum, is not to be used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be technology category of the present utility model.
Claims (2)
1, a kind of high-magnification cylindrical lithium ion battery, comprise positive and negative plate with collector, it is characterized in that: all have two collectors on this positive and negative plate, and the two ends of this negative current collector all exceed positive and negative plate, the upper/lower terminal of this negative current collector welds with the sidewall and the bottom of battery container respectively, and anodal collector then is welded on the block of battery.
2, high-magnification cylindrical lithium ion battery according to claim 1 is characterized in that: this negative current collector is the ambrose alloy composite band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200415903U CN200953358Y (en) | 2006-05-08 | 2006-05-08 | High-multiplying power cylinder lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200415903U CN200953358Y (en) | 2006-05-08 | 2006-05-08 | High-multiplying power cylinder lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200953358Y true CN200953358Y (en) | 2007-09-26 |
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ID=38811660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200415903U Expired - Fee Related CN200953358Y (en) | 2006-05-08 | 2006-05-08 | High-multiplying power cylinder lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200953358Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428922A (en) * | 2018-03-31 | 2018-08-21 | 重庆市紫建电子有限公司 | A kind of cylindrical cell |
-
2006
- 2006-05-08 CN CNU2006200415903U patent/CN200953358Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428922A (en) * | 2018-03-31 | 2018-08-21 | 重庆市紫建电子有限公司 | A kind of cylindrical cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100819 Address after: 201406 Fengxian District Green Town, Village Road, No. 3492, money Patentee after: Shanghai DLG Batteriy Co., Ltd. Address before: 201406, No. 3492, Qian Qian Road, Guangming town, Shanghai, Fengxian District Patentee before: Shanghai DLG Battery Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070926 Termination date: 20140508 |