CN103280603A - High-capacity nickel-metal hydride battery and production method thereof - Google Patents
High-capacity nickel-metal hydride battery and production method thereof Download PDFInfo
- Publication number
- CN103280603A CN103280603A CN2013102160710A CN201310216071A CN103280603A CN 103280603 A CN103280603 A CN 103280603A CN 2013102160710 A CN2013102160710 A CN 2013102160710A CN 201310216071 A CN201310216071 A CN 201310216071A CN 103280603 A CN103280603 A CN 103280603A
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- battery
- nickel
- electric core
- capacity
- hydrogen battery
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 229910052987 metal hydride Inorganic materials 0.000 title abstract 4
- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 22
- 239000001257 hydrogen Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 15
- 239000011149 active material Substances 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 7
- 230000007704 transition Effects 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract 3
- 239000013543 active substance Substances 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910018095 Ni-MH Inorganic materials 0.000 description 2
- 229910018477 Ni—MH Inorganic materials 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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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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- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides a high-capacity nickel-metal hydride battery and a production method thereof. An outmost layer of a core of the battery is in smooth transition to a sub-outer layer of the core, so that the space utilization rate of a shell is improved. The production method of the high-capacity nickel-metal hydride battery comprises the following steps of: prefabricating a conductive substrate with a specific shape; coating and filling active substances to the conductive substrate; rolling the conductive substrate to obtain a positive/negative electrode plate; overlaying and winding the positive electrode plate, a diaphragm and the negative electrode plate to obtain the battery core of which the outmost layer is in smooth transition to the sub-outer layer, so that the space utilization rate of the shell is improved; and filling the battery core into the battery shell to obtain the high-capacity nickel-metal hydride battery. As the outmost layer of the battery core is in smooth transition to the sub-outer layer, the radius difference between the outmost layer and the sub-outer layer of the battery core is reduced, so that the problem that the battery shell deforms by extrusion caused by the radius difference between the outmost layer and the sub-outer layer can be solved, the space of the shell can be sufficiently utilized, and the capacity of the battery can increase as far as possible.
Description
Technical field
The present invention relates to battery, relate in particular to a kind of high-capacity nickel-hydrogen battery and preparation method thereof.
Background technology
Along with equipment such as radio telephone, automobile, digital product are more and more higher to standby and requirement service time of secondary cell, this demand has promoted the research and development of high-capacity secondary battery at present
Ni-mh, nickel-cadmium cell are to be packed in the box hat around forming electric core by anodal, negative pole and membrane coil, and the electrolyte that reinjects is assembled.Wherein positive and negative electrode is to be coated on the conducting base by active material, follow-uply makes by high temperature, roll-in again.
In existing Ni-MH battery production technology, in order to improve battery capacity, need in box hat, to fill more active material, and under the certain situation of battery steel shell volume, the utilance that how to improve its inner space just becomes the key of filling more active material, the defective of prior art is that the core strueture of inside battery is unreasonable, be to fill more active material, be the inner space that can't take full advantage of battery case, also have also can cause electric core to pack battery case into the time cause battery case crimp and cause hidden danger of quality.So it is safer reliable and can take full advantage of the high-capacity nickel-hydrogen battery of battery case content space to make to be necessary to make improvement.
Summary of the invention
Inventive principle of the present invention is described below: need to improve the box hat space availability ratio of inner like this.Because Ni-MH battery adopts the mode of reeling that both positive and negative polarity is combined into electric core.The outermost layer of electricity core and the difference of time outer field radius equal the thickness of positive and negative electrode and barrier film.The existence of semidiameter has caused effectively utilizing the outermost remaining space of electric core, simultaneously owing to have tangible drop between the outermost layer of electric core and time skin, cause electric core in the process of box hat of packing into easily box hat crimp, increase the hidden danger of quality of product.
Technical problem to be solved by this invention is: overcome the defective of prior art, provide a kind of avoid electric core in the process of box hat of packing into easily box hat crimp increase the hidden danger of quality of product, simultaneously can the maximum battery capacity high-capacity nickel-hydrogen battery and preparation method thereof.
Technical problem of the present invention is solved by following technical scheme: a kind of high-capacity nickel-hydrogen battery, the outermost layer of its electric core seamlessly transit to inferior skin, to improve the space availability ratio of shell.
Preferably, positive plate and the negative plate of making described electric core all have at least one by the changeover portion of thick attenuation, and at least one changeover portion by thick attenuation is in the outside of the electric core in back of reeling, and seamlessly transits to inferior outer field effect with the outermost layer that obtains described electric core.
Further preferred, the thinnest end of described changeover portion by thick attenuation and the thickness ratio of thick end be 1:6～1:7.
Also preferred, described changeover portion by thick attenuation is through roll forming.
The present invention also provides a kind of manufacture method of high-capacity nickel-hydrogen battery, comprises the steps:
Prefabricated conducting base with given shape;
Apply and fill active material to described conducting base;
The described conducting base of roll-in is just obtaining/negative electrode plate;
Obtain outermost layer behind stacked described positive plate, barrier film and negative electrode plate and the coiling and seamlessly transit to inferior outer field electric core, to improve the space availability ratio of shell;
Described electric core packed into obtain described high-capacity nickel-hydrogen battery in the battery case.
Preferably, described given shape refers to that at least one end of described conducting base has the changeover portion by thick attenuation.
The mode further preferred, that described prefabricated step with conducting base of given shape adopts the precompressed pair roller to carry out roll extrusion, described precompressed pair roller has the diameter greater than other position at least a corresponding end.
Also preferred, the position that the end greater than the diameter at other position is adjacent that has of described precompressed pair roller is connected smoothly in the chamfering mode.
The beneficial effect that the present invention is compared with the prior art is: because the outermost layer of the electric core of this battery seamlessly transits to inferior skin, can be so that the outermost layer of electric core reduces to time outer field semidiameter, the battery case that so both can avoid outermost layer and time outer field semidiameter to cause is extruded problem on deformation, can take full advantage of the space of shell again, increase the capacity of battery as far as possible.
In an optimized technical scheme, by in the positive plate of electric core and negative plate setting by the changeover portion of thick attenuation, can realize relatively preferably that the outermost layer of electric core seamlessly transits to inferior skin, and can not have influence on coating and the filling of active material too much.
In another preferred scheme, changeover portion is through roll forming, and processing technology is simple, and cost is low, and the structure of product is more stable reliable.
In the manufacture method of high-capacity nickel-hydrogen battery, by prefabricated step with conducting base of given shape, can realize goal of the invention of the present invention simply and easily, need not existing high-capacity nickel-hydrogen battery processing technology is made the defective that change just can overcome prior art.
Description of drawings
Fig. 1 is the precompressed pair roller front view structural representation of one embodiment of the invention.
Fig. 2 a, 2b are respectively the negative plate front view structural representations with changeover portion of one embodiment of the invention.
Fig. 3 is the structural representation (in order to demonstrate a layer structure, not being close to mutually between each layer among the figure) of the electric core of one embodiment of the invention.
Fig. 4 is another schematic diagram of structure (mainly in order to show that outermost layer seamlessly transits to inferior outer field this special construction, the cross-sectional profiles of electric core also is the shape of battery case more close to circle) of the electric core of Fig. 3 embodiment.
Embodiment
Be example to adopt nickel foam to make positive plate for nickel-hydrogen cell below, contrast accompanying drawing and the present invention is explained in detail in conjunction with preferred embodiment.
The outermost layer of the electric core of the high-capacity nickel-hydrogen battery of present embodiment seamlessly transits to inferior skin, to improve the space availability ratio of shell.A preferable embodiment is described below:
As shown in Figure 3, the outermost layer of described electric core is from comprising negative plate 2, barrier film 3 and positive plate 1 successively outside to inside, and this skin comprises negative plate 2, barrier film 3 and positive plate 1 equally successively.Described negative plate 2 is shown in Fig. 2 a, 2b, and its two ends have one separately by the changeover portion 21 of thick attenuation, and one of them changeover portion 21 by thick attenuation is in the outermost layer of the electric core in back of reeling.The structure of positive plate 1 is similar with negative plate 2, does not give unnecessary details and illustrates so do not do.So, the outermost layer of the electric core behind the coiling by described changeover portion 21 can be level and smooth to inferior outer transition, make the cross section outline of electric core more close to cylindrical, just more near the shape of cross section of battery case, the electricity core is packed into behind the battery case, battery case inside does not almost have the space, has avoided the waste of inner space.And, also easier packing into, and can not destroy battery case.The electric core of prior art is because existing semidiameter (difference equals the thickness sum of positive plate 1, negative plate 2 and barrier film 3) between outermost layer and the inferior skin, one " step " in fact arranged, should " step " can cause electric core in the process of box hat of packing into easily box hat crimp, increase the hidden danger of quality of product.
Be the reliability that guarantees product structure and the processing cost that reduces product, the changeover portion 21 of described negative plate 2 is through roll forming.Moreover, need in conjunction with the size of actual product and structure, the thinnest end of described changeover portion 21 by thick attenuation and the thickness ratio of thick end be 1:6～1:7.The processing of positive plate 1 is the same with negative plate 2 with final structure.
The special equipment that is used for the described positive plate 1 of roll forming and negative plate 2 can adopt precompressed pair roller 4 as shown in Figure 1, it comprises a pair of roller bearing that is set up in parallel, two corresponding ends 41 of two roller bearings all have the diameter greater than middle other position, and the centre of precompressed pair roller 4 presents narrow roll extrusion gap, wide two ends, a centre.Through the roll extrusion of this precompressed pair roller 4, can obtain having positive plate 1 and negative plate 2 by the changeover portion 21 of thick attenuation like this.In addition, for the structure that makes positive plate 1 and negative plate 2 is more suitable for subsequent handlings such as coiling, the position by middle that the end 41 of two roller bearings of described precompressed pair roller 4 is adjacent seamlessly transits in the chamfering mode, like this, the thickness of the changeover portion 21 of the negative plate 2 that processes also is to be crossed by thick slipping over to Boping, can avoid thickness to change the problem of bringing suddenly.
In the previous embodiment, described negative plate 2 also can be to have only an end to have changeover portion 21 by thick attenuation, as long as this changeover portion 21 by thick attenuation is in the outside of volume core behind coiling, can realize technique effect of the present invention.
The manufacture method of present embodiment comprises the steps:
Prefabricated conducting base with given shape: given shape wherein refers to that at least one end of described conducting base has the changeover portion 21 by thick attenuation, can make by aforementioned special equipment as described in Figure 1.
Coating and process powder case are filled extremely described conducting base of active material: this step is with consistent the getting final product of way of prior art.
The described conducting base of roll-in is just obtaining/negative electrode plate: carry out on the basis of the conducting base after this step is prefabricated in front, after described precompressed pair roller 4 precompressed of foaming nickel conducting base process, present thick middle and flat, the two ends structure of attenuation gradually, it is changeover portion 21, so in being rolled into the electrode slice process of (comprising positive plate and negative plate), the changeover portion 21 at two ends still can keep the shape after the precompressed, and the just meeting of the position between two changeover portion 21 attenuation are to meet the requirement of use.At this moment, the side, edge of electrode slice sees and is an acute angle that the selection of acute angle size is relevant with electric core diameter, angle too hour pole piece edge meeting precompressed is more, cause the active material coating amount to reduce, pole piece transition meeting is relatively good like this, but influential to electric core capacity performance.
Obtain outermost layer behind stacked described positive plate, barrier film and negative electrode plate and the coiling and seamlessly transit to inferior outer field electric core, to improve the space availability ratio of shell.The side-looking structure chart of the high-capacity nickel-hydrogen battery that after this step, makes as shown in Figure 3, its outermost layer seamlessly transits to inferior skin, can reduce outermost layer and time outer field semidiameter as much as possible.
Described electric core packed into obtain described high-capacity nickel-hydrogen battery in the battery case.Because the outermost layer of the electric core that preceding step obtains and time outer field semidiameter are very little, so can not cause harmful effect to battery case in the step, and electric core can amplitude peak is full of battery case, thereby eliminates safe hidden trouble and promote the capacity of battery.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention does, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, make some being equal to substitute or obvious modification, and performance or purposes are identical, all should be considered as belonging to protection scope of the present invention.
Claims (8)
1. high-capacity nickel-hydrogen battery, it is characterized in that: the outermost layer of the electric core of this battery seamlessly transits to inferior skin, to improve the space availability ratio of shell.
2. high-capacity nickel-hydrogen battery as claimed in claim 1, it is characterized in that: the positive plate of described electric core and negative plate all have at least one by the changeover portion of thick attenuation, and at least one changeover portion by thick attenuation is in the outermost layer of the electric core in back of reeling, and makes the outermost layer of described electric core seamlessly transit to inferior skin.
3. high-capacity nickel-hydrogen battery as claimed in claim 2 is characterized in that: the thinnest end of described changeover portion by thick attenuation and the thickness ratio of thick end be 1:6～1:7.
4. high-capacity nickel-hydrogen battery as claimed in claim 2 is characterized in that: described changeover portion by thick attenuation is through roll forming.
5. the manufacture method of a high-capacity nickel-hydrogen battery is characterized in that comprising the steps:
Prefabricated conducting base with given shape;
Apply and fill active material to described conducting base;
The described conducting base of roll-in is just obtaining/negative electrode plate;
Obtain outermost layer behind stacked described positive plate, barrier film and negative electrode plate and the coiling and seamlessly transit to inferior outer field electric core, to improve the space availability ratio of shell;
Described electric core packed into obtain described high-capacity nickel-hydrogen battery in the battery case.
6. the manufacture method of use for nickel-hydrogen battery in high capacity electrode slice as claimed in claim 5, it is characterized in that: described given shape refers to that at least one end of described conducting base has the changeover portion by thick attenuation.
7. the manufacture method of use for nickel-hydrogen battery in high capacity electrode slice as claimed in claim 5, it is characterized in that: the mode that described prefabricated step with conducting base of given shape adopts the precompressed pair roller to carry out roll extrusion, described precompressed pair roller has the diameter greater than other position at least a corresponding end.
8. the manufacture method of use for nickel-hydrogen battery in high capacity electrode slice as claimed in claim 7 is characterized in that: the position that the end greater than the diameter at other position is adjacent that has of described precompressed pair roller seamlessly transits in the chamfering mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216071.0A CN103280603B (en) | 2013-06-03 | 2013-06-03 | A kind of high-capacity nickel-hydrogen battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216071.0A CN103280603B (en) | 2013-06-03 | 2013-06-03 | A kind of high-capacity nickel-hydrogen battery and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103280603A true CN103280603A (en) | 2013-09-04 |
| CN103280603B CN103280603B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310216071.0A Active CN103280603B (en) | 2013-06-03 | 2013-06-03 | A kind of high-capacity nickel-hydrogen battery and preparation method thereof |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848443A (en) * | 2017-01-09 | 2017-06-13 | 兰州金川科力远电池有限公司 | A kind of preparation method of high-capacity nickel-hydrogen battery |
| CN112002873A (en) * | 2019-05-27 | 2020-11-27 | 万向一二三股份公司 | Pole piece with high bending strength of current collector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621123A (en) * | 2009-04-03 | 2010-01-06 | 深圳市量能科技有限公司 | Manufacturing process of coiled type electrode slice |
| CN201478391U (en) * | 2009-09-04 | 2010-05-19 | 深圳市联科实业有限公司 | Nickel-metal hydride high-capacity cylindrical battery |
| CN201584453U (en) * | 2010-01-19 | 2010-09-15 | 深圳市豪鹏科技有限公司 | Cylindrical secondary battery and positive plate thereof |
| CN102088082A (en) * | 2010-12-28 | 2011-06-08 | 深圳市量能科技有限公司 | Winding battery pole pack, preparation method of winding battery pole pack and battery comprising winding battery pole pack |
-
2013
- 2013-06-03 CN CN201310216071.0A patent/CN103280603B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621123A (en) * | 2009-04-03 | 2010-01-06 | 深圳市量能科技有限公司 | Manufacturing process of coiled type electrode slice |
| CN201478391U (en) * | 2009-09-04 | 2010-05-19 | 深圳市联科实业有限公司 | Nickel-metal hydride high-capacity cylindrical battery |
| CN201584453U (en) * | 2010-01-19 | 2010-09-15 | 深圳市豪鹏科技有限公司 | Cylindrical secondary battery and positive plate thereof |
| CN102088082A (en) * | 2010-12-28 | 2011-06-08 | 深圳市量能科技有限公司 | Winding battery pole pack, preparation method of winding battery pole pack and battery comprising winding battery pole pack |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848443A (en) * | 2017-01-09 | 2017-06-13 | 兰州金川科力远电池有限公司 | A kind of preparation method of high-capacity nickel-hydrogen battery |
| CN112002873A (en) * | 2019-05-27 | 2020-11-27 | 万向一二三股份公司 | Pole piece with high bending strength of current collector |
| CN112002873B (en) * | 2019-05-27 | 2022-03-18 | 万向一二三股份公司 | Pole piece with high bending strength of current collector |
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| Publication number | Publication date |
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| CN103280603B (en) | 2015-11-18 |
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