CN1143840A - Structure design of alkaline cell and preparation thereof - Google Patents
Structure design of alkaline cell and preparation thereof Download PDFInfo
- Publication number
- CN1143840A CN1143840A CN96106554A CN96106554A CN1143840A CN 1143840 A CN1143840 A CN 1143840A CN 96106554 A CN96106554 A CN 96106554A CN 96106554 A CN96106554 A CN 96106554A CN 1143840 A CN1143840 A CN 1143840A
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- China
- Prior art keywords
- utmost point
- nickel foam
- electrode
- folding line
- nickel
- Prior art date
- 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.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 113
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 52
- 239000006260 foam Substances 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 12
- 230000004888 barrier function Effects 0.000 claims description 7
- 238000004080 punching Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 11
- 238000003466 welding Methods 0.000 description 8
- 229940112822 chewing gum Drugs 0.000 description 7
- 235000015218 chewing gum Nutrition 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 230000000994 depressogenic effect Effects 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 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
Landscapes
- Cell Electrode Carriers And Collectors (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The positive and negative electrodes of Ni/MH and Ni/Cd batteries feature their integrally packed fold-type electrode sets, having the advantages of great working area, low internal resistance, high current collecting effect and fewer leading-outs. A process for preparing foam nickel electrode is disclosed, which includes first rolling fold trace and then coating paste.
Description
The invention belongs to design of Ni/MH battery and Ni/Cd battery electrode and technology of preparing.
Existing alkaline battery, no matter its positive pole is that sintered type electrode or nickel foam formula electrode are all taked the independent electrode structure of multi-disc, each plate electrode pole piece does not connect mutually, so each monolithic all must be drawn a lug to interconnect, so entire cell lug total number is more.Even the chewing gum type battery that volume is little (mostly be greatly now three positive four negative), handy at least three monolithics of its positive pole are formed, and draw three lugs.Because the lug number is many, not only taken the very big useful space, and lost a part of capacity because of soldering polar ear.Existing technology has restricted the increase of electrode area, has influenced the electrode multiplying power discharging property, is unfavorable for improving the specific energy and the specific power of battery.In addition, barrier film is to the anode constituents mmic package, causes technology loaded down with trivial details and homogeneity is poor.The negative pole of existing alkaline battery is sintered type or punching nickel strap formula electrode, two V-type negative poles that connect together after folding of every anodal coupling.The sintered type electrode is made big energy-consuming, cost height, and the electrical property of punching nickel strap formula electrode is not as nickel foam formula electrode.When existing technology is made electrode with nickel foam, be that utmost point powder and slurry are coated on the nickel foam base material, oven dry rolls then.Because utmost point powder infiltrates in the nickel foam, and the nickel foam pliability is reduced greatly, very easily brittle failure can't fold, thereby can not use nickel foam to make negative pole, has so just limited the selection of electrode base material kind.
The purpose of this invention is to provide a kind of simple for process, the structural design of the folding utmost point group of the Ni/MH of good reliability and Ni/Cd secondary alkaline batteries.Reduce the lug number effectively, increase afflux effect and electrode area, and provide a kind of nickel foam pliability that keeps to make it preparation method, thereby widened the electrode base material range of choice as collapsible electrode.
Below in conjunction with description of drawings particular content of the present invention.
Fig. 1 is the anodal group of an a slice schematic diagram.
Fig. 2 is anodal mould schematic diagram (two in a cover).
Fig. 3 is a slice negative pole group schematic diagram.
Fig. 4 is negative pole mould schematic diagram (two in a cover).
Fig. 5 is that schematic diagram is joined in the both positive and negative polarity assembling.
[1] refers to lug in Fig. 1, and [2] are solder joint, and [3] are folding line.
[4] refer to pilot hole in Fig. 2 and Fig. 4, and [5] are the roll mark cutting edge.
Dotted line in Fig. 3 [3] is a folding line.
[6] are negative pole in Fig. 5, and [7] are anodal.
A kind of structural design of alkaline battery is by housing, and positive and negative plate and lug form, housing Can use nickel plating stainless steel or plastic casing, the former can housing be GND. Electricity of the present invention The pond is characterized in that electrode slice is the utmost point group of foldable structure, and is anodal whole with barrier film by a slice or several The utmost point group with N side direction connection folding face of body packing consists of, and every utmost point group is only welded a lug [1], negative pole is by a slice or several utmost points with (N+1) individual side direction connection (or bottom connection) folding face Group consists of. (N is natural number). Battery another feature of the present invention is to make electrode material substrate to select Scope is big, just very sintered type or foam nickel electrode, negative pole be sintered type or punching nickel strap formula or Foam nickel electrode. According to prior art, negative pole can not be made of nickel foam. Existing in order to solve Can not do the problem of folding interconnection system electrode in the technology, the present invention has improved nickel foam and has prepared electrode Technological process. It is characterized in that after the nickel foam precompressed, it is clipped in as shown in Figure 2 two moulds In the middle of the tool, shut out folding line [3] on its surface, the width of folding line is decided according to the pole piece design size, Soldering polar ear [1] is being coated in utmost point powder and slurry on the base material of nickel foam oven dry rolloff one then Inferior moulding, because the density of folding line place nickel foam becomes big, voidage descends significantly, makes utmost point powder Slurries be difficult for to infiltrate, and utmost point powder is not easy to bond on it, thereby the nickel foam at folding line place is had very Good pliability can fold, and is difficult for brittle failure. Make the electrode group after can folding by folding line. Recruitment Tool is wiped loosening utmost point powder off, is assembled into battery with housing again.
If do not adopt the nickel foam base material to do electrode, the electrode of other base materials also can use this kind Structural design and assembling mode, its basic point all be with base material itself as conductive bars, replace the utmost point Ear.
The structure of alkaline battery of the present invention owing to adopted collapsible pole piece, as conductive bars, has reduced the number of lug with base material itself effectively, has increased afflux effect and electrode area, has enlarged the range of choice of electrode base material.Prepare electrode method by the improvement nickel foam and make it to make collapsible nickel foam formula electrode.The present invention effectively utilizes battery space, has improved battery capacity, has strengthened conductivity and high-rate discharge ability, and this production technology is simple, reliability is high, help reducing cost and improving rate of finished products.
Embodiment 1: the two nickel foam Ni/MH chewing gum type batteries of nickel plating Stainless Steel Shell of the positive pole of 1 monaural of design preparation, five folding faces and the negative pole of 2 three folding faces.
Shell dimension:
A. outside the shell: length * wide * thick=48.66mm * 16mm * 10.38mm
B. in the shell: length * wide * thick=48.24mm * 15.2mm * 9.52mm
The pole piece size:
A. a slice is anodal organizes: length * wide * thick=40mm * 73.8mm * (0.68 ± 0.02) mm
B. a slice negative pole group: length * wide * thick=40mm * 45.6mm * (0.48 ± 0.02) mm
Concrete steps: the first step: the anodal making
1. nickel foam is cut into the rectangle that area is 80mm*42mm, on the backing machine, carries out precompressed then, the thickness of nickel foam pole plate is pressed onto 1.5mm by 1.6mm.
2. for can be with mould shown in Figure 2 with shutting out folding line on the nickel foam earlier.The foam nickel that presses in advance is clipped in two by between two moulds shown in Figure 2, utilize the fixedly relative position of cutting edge [5] of pilot hole [4], static pressure is to 10MPa on hydraulic press, continue to take out after 1 minute, shape such as Fig. 1, its objective is in order to extrude the wide concavity folding line [3] of 2.2mm that is in the nickel foam upper and lower surface, be corresponding thickness after being beneficial to fold.
3. soldering polar ear [1] on spot welding machine, ear pole material is a nickel strap, and Fig. 1 is seen in the spot welding position, and [2] are solder joint.
4. spot welding is crossed after the nickel foam pasting, oven dry of lug, roll once-forming, thickness is depressed into 0.68 ± 0.02mm, notices that the backing direction is parallel with doubling direction.
5. cut-parts:
Be of a size of: length * wide * thick=40mm * 73.8mm * (0.68 ± 0.02) mm
6. bend according to folding line cutting out good pole piece, wipe the loosening utmost point powder in folding line place off, on the thermoplastic packing machine, carry out entire package then with barrier film with instrument.Attention coincide barrier film and pole piece according to folding line shape edge contraction limit packing mutually.The pole piece collapsed shape is snakelike.Second step: negative pole is made
1. be thickness that being depressed into thickness on the backing machine in advance was 1.5mm after the nickel foam of 1.6mm was cut into the rectangle that area is 42mm*50mm.
2. the nickel foam that presses in advance is placed in the middle of the negative pole anchor clamps (as Fig. 4).Be placed on the hydraulic press static pressure then to 10MPa, continue to take out after 1 minute, shape such as Fig. 3 its objective is in order to extrude wide concavity folding line for 2.0mm and 3.1mm in the nickel foam upper and lower surface.
3. to after substrate pasting, the oven dry, carry out the backing once-forming, thickness is depressed into 0.48 ± 0.02mm.Noting rolling direction must be parallel with doubling direction.
4. cut-parts: be of a size of: length * wide * thick=40mm * 45.6mm * (0.48 ± 0.02) mm
5. bend according to folding line cutting out good pole piece, wipe the loosening utmost point powder in folding line place off, be folded into the ∏ shape by folding line then with instrument.The 3rd step: battery assembling (as Fig. 5)
The assembling principle: both positive and negative polarity is alternate.
The positive pole group [7] of 1 monaural, the five folding faces that the first step is made and second step 2 three of making roll over face negative pole groups [6] and are assembled into battery by Fig. 5 form, and fluid injection is sealed, and changes into.
Need to prove that for the chewing gum type battery of different model, make the size difference of pole piece area and thickness, employed anchor clamps also will correspondingly change.Its fit should be adjusted accordingly by principle of the present invention.As by existing technology, negative pole needs 2 lugs of spot welding at least, anodal must 5 lugs of spot welding, and negative pole can't use the nickel foam base material, so still there is not the battery of structure like this so far, and adopts the design easily to address the above problem by ten minutes.
Key of the present invention is that not only pliability has increased after being that nickel foam is compacted, and utmost point powder is difficult for retaining on it, and after pole piece was dried, utmost point powder can be wiped off at an easy rate.Therefore nickel foam itself has just replaced the effect of lug, thereby make lug reduce to a slice, saved the space, strengthened the afflux effect, show good electrical conductivity, and significantly reduced because of lug punctures the short circuit phenomenon that barrier film produces, overcome the shortcoming of the existing production technology of chewing gum type battery, distinct advantages such as space availability ratio height that chewing gum type battery had and technology are simple are not fully exerted.
Embodiment 2: the two nickel foam Ni/MH chewing gum type batteries of nickel plating Stainless Steel Shell that prepare the anodal 2 two-fold face negative poles of 1 monaural three folding face.Shell dimension:
A. outside the shell: length * wide * thick=46mm * 16.44mm * 5.64mm
B. in the shell: length * wide * thick=45.22mm * 15.6mm * 5.1mm pole piece size:
A. monolithic is anodal organizes: length * wide * thick=385mm * 46.56mm * (0.63 ± 0.02) mm
(this connects size for side)
B. monolithic negative pole group: length * wide * thick=38.5mm * 29.76mm * (0.38 ± 0.02) mm
(this connects size for side)
Length * wide * thick=79.08mm * 13.84mm * (0.38 ± 0.02) mm
(this connects size end of for)
As by existing technology, anodal must 3 lugs of spot welding, and negative pole can't use the nickel foam base material, and adopts the design only to need 1 lug, and is easy to use the nickel foam base material.
The concrete practice is that just very 1 monaural three folding face side connects the electrode group, and its folding line width is 2.52mm; Negative pole is that 2 two-fold face sides connect or the end connects utmost point group, and its folding line width is 2.08mm.Other concrete steps are with embodiment 1.
Embodiment 3: prepare 1 monaural seven folding face sides and connect the nickel plating Stainless Steel Shell pair nickel foam Ni/MH chewing gum type batteries that connect negative pole at the bottom of anodal and the 2 four folding faces.
As pressing existing technology, anodal necessary 7 lugs of spot welding need 2 lugs of spot welding at least when negative pole uses sintered type or punching nickel strap formula electrode, and the present battery that does not still have this process structure.The design only needs 1 positive pole ear.
Concrete steps: just very the side of 1 monaural seven folding face connects utmost point group; Negative pole is to connect snakelike utmost point group in the end of 2 four folding faces, and other concrete steps are with embodiment 1.
Claims (3)
1. the structural design of an alkaline battery is made up of housing, positive and negative plate and lug, it is characterized in that electrode is the utmost point group of foldable structure, positive pole is made of a slice or several utmost point groups with N side direction connection folding face with the barrier film entire package, every utmost point group is only welded a lug, and negative pole is made of a slice or several utmost point groups with (N+1) individual side direction connection or bottom connection folding face.
2. according to the structural design of the described a kind of alkaline battery of claim 1, it is characterized in that just very sintered type or nickel foam formula electrode, negative pole is sintered type, punching nickel strap formula or nickel foam formula electrode.
3. the preparation method of an alkaline battery, it is characterized in that being base material with the nickel foam, at first need the nickel foam precompressed is shut out folding line on its surface then, again utmost point powder and slurry are coated on the base material of nickel foam behind the soldering polar ear, oven dry, the backing once-forming is wiped the loosening utmost point powder in folding line place off with instrument, is folded into the electrode group by folding line at last, (needing edge contraction limit barrier film entire package when making anodal the group), be assembled into battery with housing again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96106554A CN1143840A (en) | 1996-06-21 | 1996-06-21 | Structure design of alkaline cell and preparation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96106554A CN1143840A (en) | 1996-06-21 | 1996-06-21 | Structure design of alkaline cell and preparation thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1143840A true CN1143840A (en) | 1997-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96106554A Pending CN1143840A (en) | 1996-06-21 | 1996-06-21 | Structure design of alkaline cell and preparation thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1143840A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327541C (en) * | 2005-06-22 | 2007-07-18 | 纪柏全 | Packaging structure of alkali battery and packaging method of alkali battery |
| CN100452490C (en) * | 2005-11-01 | 2009-01-14 | 比亚迪股份有限公司 | Method for fabricating anode plate electrode of alkaline secondary battery |
| US8609278B2 (en) | 2008-09-09 | 2013-12-17 | Johnson Controls—SAFT Advanced Power Solutions LLC | Battery cell |
-
1996
- 1996-06-21 CN CN96106554A patent/CN1143840A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327541C (en) * | 2005-06-22 | 2007-07-18 | 纪柏全 | Packaging structure of alkali battery and packaging method of alkali battery |
| CN100452490C (en) * | 2005-11-01 | 2009-01-14 | 比亚迪股份有限公司 | Method for fabricating anode plate electrode of alkaline secondary battery |
| US8609278B2 (en) | 2008-09-09 | 2013-12-17 | Johnson Controls—SAFT Advanced Power Solutions LLC | Battery cell |
| CN102197530B (en) * | 2008-09-09 | 2015-10-21 | 江森自控帅福得先进能源动力系统有限责任公司 | There is the electrochemical cell of folding electrode |
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| SE01 | Entry into force of request for substantive examination | ||
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| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |