CN107437612A - Battery electrode piece and battery - Google Patents
Battery electrode piece and battery Download PDFInfo
- Publication number
- CN107437612A CN107437612A CN201610360559.4A CN201610360559A CN107437612A CN 107437612 A CN107437612 A CN 107437612A CN 201610360559 A CN201610360559 A CN 201610360559A CN 107437612 A CN107437612 A CN 107437612A
- Authority
- CN
- China
- Prior art keywords
- metal band
- battery
- active material
- electrode piece
- hole
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/24—Electrodes for alkaline accumulators
- H01M4/32—Nickel oxide or hydroxide electrodes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention discloses a kind of battery electrode piece and battery, the battery electrode piece is formed by two cuboids with stand out are end to end, the electrode slice includes conducting base, the conducting base includes base metal band and assistant metal band, the base metal band is provided with multiple holes for filling active material, and the assistant metal band and the hole for filling active material correspond the hole for setting and being partly used for described in covering and fill active material.The present invention also provides the battery of above-mentioned battery electrode piece.One aspect of the present invention can increase the adhesive force of active material, on the other hand the tensile strength of the base metal band can be increased again, so as to the universality energy of the product of lifting, probability short-circuit during reduction battery use in addition, so that the raising that the security of battery is very big, and difficulty reduction is required to winding work operation.
Description
Technical field
The present invention relates to battery, more particularly to a kind of battery electrode piece.
Background technology
In recent years, with the improvement of people ' s living standards, communication and the consuming device such as digital product, electric tool, instrument and meter, electronic toy are more and more, the cooperating therewith battery types used also increase rapidly therewith, at present, battery is extensively and profoundly in the various aspects of people's daily life, with the rapid expansion of Battery Market, requirement of the people to its capacity and performance also more and more higher.
Battery is made up of electrode slice, electrolyte, barrier film, shell.Wherein core substance electrode slice is made up of active material and conducting base, and conducting base plays a part of conducting electric current, be uniformly distributed electrode surface current level, support and keeping active material.
On the premise of the intrinsic constancy of volume of box hat, the gram volume and volume effective rate of utilization for improving active material are mainly studied by each battery manufacturers and scientific research institution, to increase battery capacity.
Selection to electrode slice conducting base, it largely have impact on the performance of battery.For example, a kind of safety-type soft bag lithium ionic cell conducting base used at present, the aperture of its perforate are smaller, though easy feeding, loading is small, and the space effective rate of utilization of battery is low, energy density is difficult to do height, wants lifting battery energy density in the case, and difficulty is larger.
There is the punching hole diameter of research increase conducting base, increase percent opening.But active material filling is difficult, matrix is small to the adhesive force of slurry, and slurry occur can not small opening after starching, or starching.After pole piece two pairs of rollers, or occurs the phenomenon that active material peels off from hole after the coiling.
Ni-MH battery is made up of positive pole, negative pole, barrier film, and nickel electrode includes foam nickel sheet and coats the active material being filled in nickel foam, and after roll squeezer rolling, cuboid pole piece is directly cut into wafer separator.This front and rear equally wide cuboid pole piece requires tighter for high-capacity battery winding, the qualification of employee is very high, pole piece slightly walks, and to be just easily caused battery core end positive pole higher, battery short circuit probability increases after sealing, and it is also relatively strict to slot rolling tolerance, it is bigger than normal to be also easily caused the increase of battery short circuit probability.
The content of the invention
The present invention is the defects of overcoming prior art, a kind of battery electrode piece is provided, the battery electrode piece is formed by two cuboids with stand out are end to end, the electrode slice includes conducting base, the conducting base includes base metal band and assistant metal band, the base metal band is provided with multiple holes for filling active material, and the assistant metal band and the hole for filling active material correspond the hole for setting and being partly used for described in covering and fill active material.
According to an embodiment of the invention, following preferable technical scheme can also be used：
The stand out is 0.5~1.0mm.
The aperture in the hole for filling active material is >=2mm.
The width of the assistant metal band is less than the diameter for being used to fill the hole of active material, and is set along a diameter for being used to fill the hole of active material.
The horizontal angle of the diameter and the base metal band is 0~90 degree.
The horizontal angle of the diameter and the base metal band is 45 degree.
The width of the assistant metal band be it is described be used for fill active material hole aperture 5%~10%.
The hole for being used to fill active material is punching.
The base metal band and assistant metal band use nickel-plated metal band.
A kind of battery, including electrode slice, the electrode slice is as previously described.
The beneficial effects of the invention are as follows：Because base metal band is provided with multiple holes for being used to fill active material, therefore the loading of active material greatly increases, again because of the setting of assistant metal band, on the one hand the adhesive force of active material can be increased, on the other hand the tensile strength of the base metal band can be increased again, so as to the universality energy of the product of lifting.Pole piece is formed by two cuboids with one fixed width difference are end to end, width is small in outer layer after electric core winding, positive extremity is shorter, battery shell wall is not easy to touch, overwhelms positive pole after slot rolling sealing, so as to reduce short-circuit probability during battery use, so that the raising that the security of battery is very big, and difficulty reduction is required to winding work operation.
In one preferable technical scheme, the aperture in the hole for filling active material is >=2mm large aperture, much larger than the aperture of prior art, therefore active material can be more filled, the utilization rate in space in battery is provided as far as possible.
The width of the assistant metal band be it is described be used to fill the 5%~10% of the aperture in the hole of active material, both can preferably avoid spillage, peel off, and can suitably strengthen the tensile strength of conducting base in the case where not rolling up material again.
Using punching, then high in machining efficiency, cost is low.
Brief description of the drawings
Fig. 1 is the conducting base structural representation of one embodiment of the present of invention.
Fig. 2 is the conducting base mesopore of Fig. 1 embodiments and its structure enlargement diagram of assistant metal band.
Fig. 3 is the positive plate schematic diagram of Ni-MH battery according to a preferred embodiment of the invention.
Embodiment
Below against accompanying drawing and with reference to preferred embodiment, the invention will be further described.
A kind of conducting base, for manufacturing the electrode slice of high-capacity battery, as depicted in figs. 1 and 2, the conducting base includes base metal band 1 and assistant metal band 2, the base metal band 1 is provided with multiple holes 10 for filling active material, and the assistant metal band 2 and the hole 10 for filling active material correspond the hole 10 for setting and being partly used for described in covering and fill active material.Dotted line L1 is the transverse direction of base metal band, and dotted line L2 is a diameter for being used to fill the hole 10 of active material, and the angle α between L1 and L2 is 45 degree.It will be understood by those skilled in the art that the angle α is not limited to 45 degree of angles, can be selected between 0~90 degree；And the assistant metal band 2 must not necessarily be set along the dotted line L2, have certain deviation to be also subjected to.
Wherein, the hole for being used to fill active material is punching, and the base metal band and assistant metal band use nickel-plated metal band（Can be steel band, nickel strap, copper strips etc.）.The aperture for being used to fill the hole of active material typically can select to use in the range of >=2mm according to actual conditions, and the width of the assistant metal band is less than the diameter for being used to fill the hole of active material, and set along a diameter for being used to fill the hole of active material.Such set-up mode can be such that the assistant metal band is used to fill above the hole of active material between two parties described, it is not necessary to too wide preferably to prevent its both sides uncovering position spillage（When filling active material）Or active material peels off（During core）.In principle, the assistant metal band（Diameter）Horizontal angle with the base metal band is at 0~90 degree.In addition, the width of the assistant metal band be it is described be used for fill active material hole aperture 5%~10%.
Below by taking ni-mh AA2500 negative plate as an example, thickness of strips used is 0.245mm, contrasts prior art
The technique effect of structure and two embodiments of the invention is as follows：
As known from the above, in bulk density under the same conditions, embodiment one increases 0.28g than the amount of the active material of prior art, and embodiment two increases 0.45g than the amount of the active material of prior art.That is, conducting base of the nickel-plated metal of the present invention with conducting base compared with prior art can increase the active material of filling more than 2.7%.
The base metal band 1 that the present invention is provided with multiple holes 10 for filling active material can specifically be processed in the following way：Design a kind of special punch die（Shape and size can be designed as needed）, using the special punch die to conventional nickel-plated metal ribbon matrix（It is non-porous）Punching.
Above conducting base is used to make electrode slice, for in high-capacity battery, active material in battery is coated on the surface of the conducting base and is filled in the hole for filling active material, it is hereby achieved that the battery of more Large Copacity, and the electrode slice intensity of the battery is high, it is instant rolled around and active material when spillage and winding being avoided to peel off as far as possible when filling active material, production cost is low and preferably meets requirement of the people to its capacity and performance.
Referring to Fig. 3, a kind of positive plate for nickel-hydrogen cell 3, including two sections that width differs, the width of wider leading portion 31 is D, and the width of narrower endpiece 32 is d.Lug 4 is fixed on leading portion 31.D and d difference determines by specific battery structure, preferably 0.5-1.0mm.The length N of endpiece 32 is determined by the length of the outmost turns of battery core.
Leading portion 31 can be by being stamped and formed out with the breach required for the width difference of endpiece 32 in the present invention, probability of the bruising to positive pole at box hat slot rolling can largely be reduced after high-capacity battery sealing by rushing breach in pole piece endpiece, positive extremity is shorter after electric core winding, battery shell wall is not easy to touch, overwhelms positive pole after slot rolling sealing, so as to reduce short-circuit probability during battery use so that the very big raising of the security of battery.And difficulty reduction is required to winding work operation.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert that the specific implementation of the present invention is confined to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some equivalent substitutes or obvious modification can also be made, and performance or purposes are identical, should all be considered as belonging to protection scope of the present invention.
Claims (10)
- A kind of 1. battery electrode piece, it is characterised in that：The battery electrode piece is formed by two cuboids with stand out are end to end, the electrode slice includes conducting base, the conducting base includes base metal band and assistant metal band, the base metal band is provided with multiple holes for filling active material, and the assistant metal band and the hole for filling active material correspond the hole for setting and being partly used for described in covering and fill active material.
- 2. battery electrode piece according to claim 1, it is characterised in that：The stand out is 0.5~1.0mm.
- 3. the battery electrode piece as described in claim 1, it is characterized in that：The aperture in the hole for filling active material is≥ 2mm。
- 4. the battery electrode piece as described in claim 1, it is characterised in that：The width of the assistant metal band is less than the diameter for being used to fill the hole of active material, and is set along a diameter for being used to fill the hole of active material.
- 5. battery electrode piece as claimed in claim 4, it is characterized in that：The horizontal angle of the diameter and the base metal band is 0~90 degree.
- 6. battery electrode piece as claimed in claim 5, it is characterized in that：The horizontal angle of the diameter and the base metal band is 45 degree.
- 7. battery electrode piece as claimed in claim 3, it is characterized in that：The width of the assistant metal band be it is described be used for fill active material hole aperture 5%~10%.
- 8. the battery electrode piece as described in claim 1, it is characterized in that：The hole for being used to fill active material is punching.
- 9. battery electrode piece as claimed in claim 8, it is characterized in that：The base metal band and assistant metal band use nickel-plated metal band.
- 10. a kind of battery, including the electrode slice such as claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610360559.4A CN107437612A (en) | 2016-05-28 | 2016-05-28 | Battery electrode piece and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610360559.4A CN107437612A (en) | 2016-05-28 | 2016-05-28 | Battery electrode piece and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107437612A true CN107437612A (en) | 2017-12-05 |
Family
ID=60453257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610360559.4A Pending CN107437612A (en) | 2016-05-28 | 2016-05-28 | Battery electrode piece and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107437612A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201490267U (en) * | 2009-09-04 | 2010-05-26 | 深圳市联科实业有限公司 | Ni-mh high capacity battery anode plate |
| CN203288687U (en) * | 2013-05-30 | 2013-11-13 | 深圳市量能科技有限公司 | High-capacity battery, and electrode plate and conductive substrate thereof |
-
2016
- 2016-05-28 CN CN201610360559.4A patent/CN107437612A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201490267U (en) * | 2009-09-04 | 2010-05-26 | 深圳市联科实业有限公司 | Ni-mh high capacity battery anode plate |
| CN203288687U (en) * | 2013-05-30 | 2013-11-13 | 深圳市量能科技有限公司 | High-capacity battery, and electrode plate and conductive substrate thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208226003U (en) | Battery and its electronic equipment | |
| EP3582296B1 (en) | Electrode for secondary battery with improved safety, manufacturing method thereof, and secondary battery including same electrode | |
| WO2018024203A1 (en) | Pole piece and electrochemical cell | |
| CN101106203A (en) | Lithium battery with new electrode structure and its making method | |
| CN205723770U (en) | The electrode of a kind of battery and lithium ion battery | |
| CN205944236U (en) | Battery sheet and contain lithium ion battery of this pole piece | |
| CN212571274U (en) | Lithium ion battery and electronic device | |
| CN109065839A (en) | A kind of full tab positive plate, winding battery core and preparation method thereof | |
| CN109301150B (en) | Full-tab winding core and battery using same | |
| CN207624804U (en) | The electrode and polymer Li-ion battery of polymer Li-ion battery | |
| CN100530770C (en) | Electrode group structure of winding type accumulator | |
| CN209401736U (en) | Electrode member, electrode assembly and secondary cell | |
| US20150140412A1 (en) | Soft-packaged lithium-ion battery | |
| CN207731993U (en) | Unidirectional lug high power capacity cylindrical lithium ion power battery | |
| CN203288687U (en) | High-capacity battery, and electrode plate and conductive substrate thereof | |
| CN107437612A (en) | Battery electrode piece and battery | |
| CN207165694U (en) | A kind of cylindrical lithium ion battery for improving power battery core circulation part | |
| CN208970632U (en) | A kind of full tab positive plate, winding battery core | |
| CN201490267U (en) | Ni-mh high capacity battery anode plate | |
| CN110419133B (en) | Electrode assembly and method of manufacturing the same | |
| CN201689945U (en) | Cylindrical nickel-metal hydride battery and cathode thereof | |
| JP2002343366A (en) | Electrode plate for alkaline storage battery and alkaline battery using same | |
| CN205960106U (en) | Bury utmost point ear formula pole piece and lithium ion battery | |
| CN203192918U (en) | Battery cell and nickel-metal hydride battery | |
| CN110313096A (en) | Electrode, electrode assembly and its manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171205 |
|
| WD01 | Invention patent application deemed withdrawn after publication |