CN203056006U - Secondary battery with high-rate discharge characteristic - Google Patents
Secondary battery with high-rate discharge characteristic Download PDFInfo
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- CN203056006U CN203056006U CN2012205436511U CN201220543651U CN203056006U CN 203056006 U CN203056006 U CN 203056006U CN 2012205436511 U CN2012205436511 U CN 2012205436511U CN 201220543651 U CN201220543651 U CN 201220543651U CN 203056006 U CN203056006 U CN 203056006U
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- Prior art keywords
- lug
- spot welding
- positive plate
- secondary cell
- multiplying power
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Links
- 238000003466 welding Methods 0.000 claims abstract description 67
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 32
- 229910052759 nickel Inorganic materials 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 2
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 2
- 229910001416 lithium ion Inorganic materials 0.000 claims description 2
- 229910052987 metal hydride Inorganic materials 0.000 claims description 2
- -1 nickel metal hydride Chemical class 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 238000007599 discharging Methods 0.000 description 31
- 230000000052 comparative effect Effects 0.000 description 10
- 229910018095 Ni-MH Inorganic materials 0.000 description 8
- 229910018477 Ni—MH Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000009955 starching Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000020411 cell activation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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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
-
- 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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a secondary battery, in particular relates to a secondary battery with high-rate discharge characteristic. The secondary battery comprises a positive post and a battery case, wherein the battery case is internally provided with a negative plate, a diaphragm and a positive plate, wherein one or more tabs are arranged on the positive plate in a spot welding manner, the tabs are connected with the positive post, the spot welding depth of the tabs on the a positive plate is more than or equal to 2mm, and the number of spots of tabs on the positive plate is required to be more than or equal to 4. The secondary battery has the advantages that the tabs are sufficiently contacted with the spot welding contact surface of the positive plate, the connection resistance of the positive plate and the tabs is small, and the better high-rate discharge property of the secondary battery can be obtained.
Description
Technical field
The utility model relates to secondary cell, relates in particular to a kind of secondary cell with high-multiplying power discharge characteristic.
Background technology
In recent years, along with the high speed development of electronic equipment and to portability and wirelessization development, the electronic equipment of practical secondary cell has proposed more and more harsher requirement to secondary cell, especially the high magnification of secondary cell is had higher requirement, even the electronic equipment that has requires up to 50C the discharge-rate of secondary cell.The high-multiplying power discharge characteristic that how to improve secondary cell becomes one of research focus of present secondary cell.Numerous domestic and international experts all is devoted to how further to improve the anodal inferior nickel of secondary cell or the heavy-current discharge performance of negative pole alloy, and in the hope of the high-multiplying power discharge characteristic of raising secondary cell, but effect is all not very good.
As Chinese invention patent application (application number: 03116743.8 applying date: 2003-04-28) disclose a kind of secondary cell with high-multiplying power discharge characteristic and high power capacity.It has block, battery case, is provided with negative plate, barrier film, positive plate in battery case, is provided with 2-7 lug and joins with block at positive plate.This invention adopts two or more multipole ears that anode plate is connected with the positive terminal of battery in the positive plate production process of secondary cell, rather than adopt traditional monopole ear or end face to weld, can obviously improve the high-rate discharge ability of secondary cell, improve the inner space utilance of secondary cell simultaneously, realize the high-multiplying power discharge of secondary cell and the compatibility of secondary cell high power capacity, simultaneously because the spot welding of lug and positive plate contacts the contact of genus face, rather than as the some contact that end face welds, can obtain like this to weld better heavy-current discharge performance than end face.But the applicant finds can not obtain the high-rate discharge ability of secondary cell preferably under the situation of the shallow spot welding degree of depth and few solder joint number in actual production.
Summary of the invention
In order further to improve the anodal inferior nickel of secondary cell or the heavy-current discharge performance of negative pole alloy, in the hope of improving the high-multiplying power discharge characteristic of secondary cell, the purpose of this utility model provides a kind of secondary cell with high-multiplying power discharge characteristic, this battery is because spot welding is counted, the requirement of the spot welding degree of depth fully contacts the spot welding contact-making surface of lug and positive plate, positive plate and lug to be connected resistance little, can obtain the high-rate discharge ability of secondary cell preferably.
In order to realize first above-mentioned purpose, the utility model has adopted following technical scheme:
A kind of secondary cell with high-multiplying power discharge characteristic, this battery comprises positive terminal and battery case, in battery case, be provided with negative plate, barrier film, positive plate, be welded with one to a plurality of lugs at positive plate point, described lug and positive terminal join, the spot welding degree of depth requirement 〉=2mm of lug on positive plate, and requirement 〉=4 point of counting of the described lug of described positive plate spot welding.
As preferably, the spot welding degree of depth of described lug on positive plate requires to be 3-15mm, and counting of the described lug of positive plate spot welding requires to be 4-18.
As preferably, the quantity of the lug of spot welding is 1-7 lug on the described positive plate, the minimum range 〉=5mm between a plurality of lugs.
As preferably, the thickness of the metal tape that described lug is used is 0.01-2.0mm, and width is 1.0-15.0mm.As preferred again, the thickness of the metal tape that described lug is used is 0.1-0.5mm, and width is 2.0-5.0mm.
As preferably, described lug material is the metal tape of fine copper, pure nickel, copper alloy or nickel alloy, and perhaps, the lug material is copper facing, nickel plating, silver-plated or gold-plated metal tape.
As preferably, described positive plate spot welding lug adopts manual spot welding or automatic spot.
As preferably, described secondary cell is lithium ion, lighium polymer, nickel metal hydride, NI-G column type or square secondary cell.
The utility model adopts one to a plurality of (1-7) lug positive plate to be connected with the positive terminal of battery in the positive plate production process of secondary cell, lug spot welding degree of depth requirement 〉=2mm wherein, spot welding is counted 〉=4 points, rather than adopt traditional single lug, the no spot welding degree of depth, the spot welding requirement of counting, can obviously improve the high-rate discharge ability of secondary cell, count owing to spot welding simultaneously, the requirement of the spot welding degree of depth fully contacts the spot welding contact-making surface of lug and positive plate, positive plate and lug to be connected resistance little, can obtain the high-rate discharge ability of secondary cell preferably.And the utility model is not subjected to the constraint of battery size size.
Description of drawings
Fig. 1 is the secondary battery construction schematic diagram with high-multiplying power discharge characteristic, and wherein 1 is that block, 2 is that battery case, 3 is that positive plate, 4 is that barrier film, 5 is that negative plate, 6 is lug.
Fig. 2 is the positive plate point postwelding schematic diagram of the utility model when using bipolar ear, wherein 3 for positive plate, 6 for lug, 7 length are the lug spot welding degree of depth, 8 count for spot welding.
Fig. 3 is the discharge curve comparative result schematic diagram of a kind of battery under different multiplying discharging current condition.
Fig. 4 is the discharge curve comparative result schematic diagram of a kind of battery under different multiplying discharging current condition.
Fig. 5 is the discharge curve comparative result schematic diagram of a kind of battery under different multiplying discharging current condition.
Fig. 6 is the discharge curve comparative result schematic diagrames of two kinds of batteries under 20 multiplying powers (50 amperes) discharging current condition.
Fig. 7 is the discharge curve comparative result schematic diagrames of two kinds of batteries under 20 multiplying powers (50 amperes) discharging current condition.
Embodiment
Adopting the battery nominal capacity is the SC type Ni-MH battery of 2500mAh, positive plate and block be connected with 3 lugs, the lug spacing is 6.0mm, the positive plate spot welding degree of depth is 0.5mm, the lug material is the pure nickel band, is of a size of: width 3.5mm, thickness are 0.10mm, positive pole ear spot welding is counted and is adopted 1 point, and the internal resistance of cell of this battery is 25m Ω.The discharge of battery under 0.2 multiplying power (0.5 ampere), 1 multiplying power (2.5 amperes), 20 multiplying powers (50 amperes) discharging current condition, 0.2 the multiplying power discharging capacity can reach 65% of nominal capacity, 49%, the 20 multiplying power discharging capacity that 1 multiplying power discharging capacity can reach nominal capacity is zero.
A kind of method for preparing the above-mentioned secondary cell with high-multiplying power discharge characteristic, this method comprises the steps:
1) count according to above-mentioned positive plate lug quantity and position, the spot welding degree of depth, spot welding, the lug number control of single positive plate at one to a plurality of lugs;
2) according to battery size, the positive and negative pole plate of design battery and the size of diaphragm paper;
3) according to designing requirement, with machine or manual align, the negative plate matrix is by the starching amount starching of design, and oven dry as dry production, then must not dried;
4) by design size cut, positive and negative pole plate;
5) remove the locational inferior nickel by powder of each lug of positive plate;
6) count according to design attitude, the spot welding degree of depth, the spot welding of positive plate and carry out the spot welding lug;
7) reel on request, and the pole plate of winding is assembled in the box hat;
8) carry out slot rolling by specification requirement;
9) carry out fluid injection by specification requirement;
The other end of the whole lugs that 10) will be weld with positive plate welds with positive terminal;
11) by specification requirement battery is sealed;
12) cell activation, sorting.
Certainly, also can be earlier first spot welding lug on the anodal matrix again starching or on powder.
Adopting the battery nominal capacity is the SC type Ni-MH battery of 2500mAh, positive plate and block be connected with 3 lugs, the lug spacing is 6.0mm, the positive plate spot welding degree of depth is 1.0mm, the lug material is the pure nickel band, is of a size of: width 3.5mm, thickness are 0.10mm, positive pole ear spot welding is counted and is adopted 2 points, and the internal resistance of cell of this battery is 21m Ω.The discharge of battery under 0.2 multiplying power (0.5 ampere), 1 multiplying power (2.5 amperes), 20 multiplying powers (50 amperes) discharging current condition.0.2 it is zero that the multiplying power discharging capacity can reach 55%, the 20 multiplying power discharging capacity that 69%, 1 multiplying power discharging capacity of nominal capacity can reach nominal capacity.
The preparation method of above-mentioned secondary cell is shown in embodiment 1.
Adopting the battery nominal capacity is the SC type Ni-MH battery of 2500mAh, positive plate and block be connected with 3 lugs, the lug spacing is 6.0mm, the positive plate spot welding degree of depth is 1.5mm, the lug material is the pure nickel band, is of a size of: width 3.5mm, thickness are 0.10mm, positive pole ear spot welding is counted and is adopted 3 points, and the internal resistance of cell of this battery is 18m Ω.The discharge of battery under 0.2 multiplying power (0.5 ampere), 1 multiplying power (2.5 amperes), 20 multiplying powers (50 amperes) discharging current condition.0.2 it is zero that the multiplying power discharging capacity can reach 67%, the 20 multiplying power discharging capacity that 86%, 1 multiplying power discharging capacity of nominal capacity can reach nominal capacity.
The preparation method of above-mentioned secondary cell is shown in embodiment 1.
Adopting the battery nominal capacity is the SC type Ni-MH battery of 2500mAh, positive plate and block be connected with 3 lugs, the lug spacing is 6.0mm, the positive plate spot welding degree of depth is 2.0mm, the lug material is the pure nickel band, is of a size of: width 3.5mm, thickness are 0.10mm, positive pole ear spot welding is counted and is adopted 4 points, and the internal resistance of cell of this battery is 15m Ω.The discharge curve comparative result of battery under 0.2 multiplying power (0.5 ampere), 1 multiplying power (2.5 amperes), 20 multiplying powers (50 amperes) discharging current condition seen Fig. 3.As seen from the figure, positive pole ear spot welding 4 points, the battery 0.2 multiplying power discharging capacity of spot welding degree of depth 2.0mm can reach nominal capacity 99%, 1 multiplying power discharging capacity can reach 87% of nominal capacity, but 20 multiplying power discharging capacity reach 23.2% of nominal capacity.
The preparation method of above-mentioned secondary cell is shown in embodiment 1.
Adopting the battery nominal capacity is the SC type Ni-MH battery of 2500mAh, positive plate and block be connected with 3 lugs, the lug spacing is 6.0mm, the positive plate spot welding degree of depth is 3.0mm, the lug material is the pure nickel band, is of a size of: width 3.5mm, thickness are 0.10mm, positive pole ear spot welding is counted and is adopted 4 points, and the internal resistance of cell of this battery is 15m Ω.The discharge curve comparative result of battery under 0.2 multiplying power (0.5 ampere), 1 multiplying power (2.5 amperes), 20 multiplying powers (50 amperes) discharging current condition seen Fig. 4.As seen from the figure, positive pole ear spot welding 4 points, the battery 0.2 multiplying power discharging capacity of spot welding degree of depth 3.0mm can reach nominal capacity 101.6%, 1 multiplying power discharging capacity can reach 91.2% of nominal capacity, but 20 multiplying power discharging capacity reach 60.8% of nominal capacity.
The preparation method of above-mentioned secondary cell is shown in embodiment 1.
Adopting the battery nominal capacity is the SC type Ni-MH battery of 2500mAh, positive plate and block be connected with 3 lugs, the lug spacing is 6.0mm, the positive plate spot welding degree of depth is 15.0mm, the lug material is the pure nickel band, is of a size of: width 3.5mm, thickness are 0.10mm, positive pole ear spot welding is counted and is adopted 18 points, and the internal resistance of cell of this battery is 3 Ω.The discharge curve comparative result of battery under 0.2 multiplying power (0.5 ampere), 1 multiplying power (2.5 amperes), 20 multiplying powers (50 amperes) discharging current condition seen Fig. 5.As seen from the figure, positive pole ear spot welding 18 points, the battery 0.2 multiplying power discharging capacity of spot welding degree of depth 15.0mm can reach nominal capacity 105.2%, 1 multiplying power discharging capacity can reach 97.6% of nominal capacity, but 20 multiplying power discharging capacity reach 96% of nominal capacity.
The preparation method of above-mentioned secondary cell is shown in embodiment 1.
Adopting the battery nominal capacity is the SC type Ni-MH battery of 2500mAh, positive plate and block be connected with 3 lugs, the lug spacing is 6.0mm, and the positive plate spot welding degree of depth is 5.0mm, and the lug material is the pure nickel band, be of a size of: width 3.5mm, thickness is 0.10mm, and positive pole ear spot welding is counted and adopted 6 points, 18 points respectively, and two kinds of all the other manufacture methods of battery are identical, it is that 6 the internal resistance of cell is 11m Ω that spot welding is counted, and it is that 18 the internal resistance of cell is 5m Ω that spot welding is counted.The discharge curve comparative result of two kinds of batteries under 20 multiplying powers (50 amperes) discharging current condition seen Fig. 6.As seen from the figure, the high-multiplying power discharge characteristic of the battery of 18 of positive pole ear spot welding is much higher than the battery of 6 of positive pole ear spot welding.
The preparation method of above-mentioned secondary cell is shown in embodiment 1.
Adopting the battery nominal capacity is the SC type Ni-MH battery of 2500mAh, positive plate and block be connected with 3 lugs, the lug spacing is 6.0mm, and it is 18 points that positive plate spot welding is counted, and the lug material is the pure nickel band, be of a size of: width 3.5mm, thickness is 0.10mm, and the positive pole ear spot welding degree of depth is respectively 3.0mm, 5.0mm, and two kinds of all the other manufacture methods of battery are identical, the spot welding degree of depth is that the internal resistance of cell of 3.0mm is 10m Ω, and the spot welding degree of depth is that the internal resistance of cell of 5.0mm is 5m Ω.The discharge curve comparative result of two kinds of batteries under 20 multiplying powers (50 amperes) discharging current condition seen Fig. 7.As seen from the figure, the high-multiplying power discharge characteristic of the battery of positive pole ear spot welding degree of depth 5.0mm is much higher than the battery of spot welding degree of depth 3.0mm.
The preparation method of above-mentioned secondary cell is shown in embodiment 1.
Claims (8)
1. secondary cell with high-multiplying power discharge characteristic, this battery comprises positive terminal and battery case, in battery case, be provided with negative plate, barrier film, positive plate, be welded with one to a plurality of lugs at positive plate point, described lug and positive terminal join, it is characterized in that: the spot welding degree of depth requirement 〉=2mm of lug on positive plate, and requirement 〉=4 point of counting of the described lug of described positive plate spot welding.
2. a kind of secondary cell with high-multiplying power discharge characteristic according to claim 1 is characterized in that: the spot welding degree of depth of lug on positive plate requires to be 3-15mm, and counting of the described lug of positive plate spot welding requires to be 4-18.
3. a kind of secondary cell with high-multiplying power discharge characteristic according to claim 1 and 2, it is characterized in that: the quantity of the lug of spot welding is 1-7 lug on the positive plate, the minimum range 〉=5mm between a plurality of lugs.
4. a kind of secondary cell with high-multiplying power discharge characteristic according to claim 1 and 2, it is characterized in that: the thickness of the metal tape that lug is used is 0.01-2.0mm, width is 1.0-15.0mm.
5. a kind of secondary cell with high-multiplying power discharge characteristic according to claim 4, it is characterized in that: the thickness of the metal tape that lug is used is 0.1-0.5mm, width is 2.0-5.0mm.
6. a kind of secondary cell with high-multiplying power discharge characteristic according to claim 1 and 2, it is characterized in that: the lug material is the metal tape of fine copper, pure nickel, copper alloy or nickel alloy, perhaps, the lug material is copper facing, nickel plating, silver-plated or gold-plated metal tape.
7. a kind of secondary cell with high-multiplying power discharge characteristic according to claim 1 and 2, it is characterized in that: positive plate spot welding lug adopts manual spot welding or automatic spot.
8. a kind of secondary cell with high-multiplying power discharge characteristic according to claim 1 and 2, it is characterized in that: secondary cell is lithium ion, lighium polymer, nickel metal hydride or NI-G column type or square secondary cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205436511U CN203056006U (en) | 2012-10-23 | 2012-10-23 | Secondary battery with high-rate discharge characteristic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205436511U CN203056006U (en) | 2012-10-23 | 2012-10-23 | Secondary battery with high-rate discharge characteristic |
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| CN203056006U true CN203056006U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205436511U Expired - Lifetime CN203056006U (en) | 2012-10-23 | 2012-10-23 | Secondary battery with high-rate discharge characteristic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881858A (en) * | 2012-10-23 | 2013-01-16 | 浙江凯恩电池有限公司 | Secondary battery with high-ratio discharge characteristics and production method of secondary battery |
-
2012
- 2012-10-23 CN CN2012205436511U patent/CN203056006U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881858A (en) * | 2012-10-23 | 2013-01-16 | 浙江凯恩电池有限公司 | Secondary battery with high-ratio discharge characteristics and production method of secondary battery |
| CN102881858B (en) * | 2012-10-23 | 2015-08-05 | 浙江凯恩电池有限公司 | Secondary cell with high-multiplying-power discharge performance and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |