CN102738418B - Square lithium-ferrous disulfide battery and preparation method thereof - Google Patents
Square lithium-ferrous disulfide battery and preparation method thereof Download PDFInfo
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- CN102738418B CN102738418B CN201210221426.0A CN201210221426A CN102738418B CN 102738418 B CN102738418 B CN 102738418B CN 201210221426 A CN201210221426 A CN 201210221426A CN 102738418 B CN102738418 B CN 102738418B
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Abstract
The present invention relates to square lithium-ferrous disulfide battery, it comprise substantially be square housing, lid together with case weld, be arranged on battery core in housing and electrolyte, described battery core comprises the barrier film of positive plate, negative plate and isolation positive/negative plate.Positive plate comprises ferrous disulfide, and negative plate is lithium sheet.The structure of described battery core is the one in structure one and structure two.Square lithium-ferrous disulfide battery manufacture method of the present invention is simple, be convenient to produce in batches, according to the requirement customization various sizes of application product, can fill a hole in the market.Be mainly used in the high-end electronic products such as portable music player in the market, electronic dictionary, palmtop PC, digital camera and electric shaver, be enough to meet many-sided demand of client on market.
Description
Technical field
The present invention relates to lithium primary battery, particularly relate to a kind of square lithium-ferrous disulfide battery and preparation method thereof.
Background technology
Lithium-ferrous disulfide primary cell is in the market mainly based on pillar, although performance and use can meet the demand of most of client, but there is certain use limitation.The high-end electronic products such as such as current portable music player, electronic dictionary, palmtop PC, digital camera and electric shaver all need to use square sheet type lithium battery.
Summary of the invention
Based on this, be necessary to provide a kind of square lithium-ferrous disulfide battery.
A kind of square lithium-ferrous disulfide battery, it comprise substantially be square housing, lid together with case weld, be arranged on battery core in housing and electrolyte.Described battery core comprises the barrier film of positive plate, negative plate and isolation positive/negative plate.Positive plate comprises ferrous disulfide, and negative plate is lithium sheet.Described battery core is takeup type, comprise a slice strip positive plate, a slice strip negative plate and a slice strip barrier film, be positioned at the head of the positive plate at center by barrier film bending reversion parcel, the head being positioned at the head distance positive plate of the negative plate at center has at least the volume pin of 3/4 circle to rotate length.
Present invention also offers a kind of preparation method of square lithium-ferrous disulfide battery, comprise making battery core, the battery core made is loaded the shell be substantially square, opening battery cover being welded on shell forms the seal casinghousing except liquid injection port, inject electrolyte in the housing, sealing liquid injection port, and step that is aging and test is carried out to battery.Wherein, described battery core is takeup type, comprise a slice strip positive plate, a slice strip negative plate and a slice strip barrier film, be positioned at the head of the positive plate at center by barrier film bending reversion parcel, the head being positioned at the head distance positive plate of the negative plate at center has at least the volume pin of 3/4 circle to rotate length.The preparation method of battery core comprises step:
S201, by the doubling of strip barrier film and alignment bosses on volume pin, control volume pin and revolve and turn around;
S202, head head being pressed with the strip positive plate of lug is placed on barrier film near volume pin, controls volume pin and rotates 3/4 circle;
S203, makes strip positive plate between barrier film the barrier film reversion on upper strata;
S204, head head being pressed with the strip negative plate of lug is placed on barrier film near volume pin, rotates volume pin until positive/negative plate winding is complete; And
S205, seals in barrier film end High temperature-resistanadhesive adhesive tape.
In a preferred embodiment, the preparation method of positive pole comprises:
Bonding agent and solvent are put into mixer and carry out revolution with pre-provisioning request and glue is made in rotation;
Add positive electrode active materials stirring add the conductive agent stirring scheduled time in glue after and make anode sizing agent;
By predetermined face density, anode sizing agent is coated on collector, and at a predetermined temperature slurry is dried;
Be cut to strip by after the collector pair roller roll-in being coated with slurry point, and soldering polar ear makes positive plate respectively.
Square lithium-ferrous disulfide battery manufacture method of the present invention is simple, be convenient to produce in batches, according to the requirement customization various sizes of application product, can fill a hole in the market.Be mainly used in the high-end electronic products such as portable music player in the market, electronic dictionary, palmtop PC, digital camera and electric shaver, be enough to meet many-sided demand of client on market.
Accompanying drawing explanation
Fig. 1 is the cross-section figure of the square lithium-ferrous disulfide battery of the present invention.
Fig. 2 is the structural representation of the battery core of one embodiment of the invention.
Fig. 3 is the method for winding schematic diagram of the battery core of another embodiment of the present invention.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing, the square lithium-ferrous disulfide battery of the present invention is described in further detail.
Refer to Fig. 1, square lithium-ferrous disulfide battery mainly comprises housing 10, lid 20, battery core and electrolyte.Housing 10 is square substantially, and itself and lid 20 weld together composition confined space, and battery core and electrolyte are placed in one.Battery core is made up of the barrier film 50 of positive plate 30, negative plate 40 and isolation positive/negative plate 30,40, can be stacked or takeup type, in flat square.Collector or flow collection sheet can be provided with in positive plate and negative plate, be provided with lug.
The active material of positive plate 30 is ferrous disulfide, and conductive agent is carbon class and/or graphite-like is solid-state or liquid, and negative plate 40 adopts pure metal lithium or lithium alloy.Barrier film is that PP or PE individual layer, PP-PE bilayer, PP-PE-PP or PE-PP-PE tri-layers or PP and PE surface metallization oxide are as materials such as aluminium oxide.Electrolyte is the solution that lithium salts is dissolved in DOX equal solvent.Shell can be the metal such as steel, aluminium or the nonmetallic materials such as aluminum plastic film, plastics.Collector can be aluminium, nickel, steel or aluminium net, nickel screen, steel mesh etc.Lug material can be copper, steel, nickel or its composite material of two kinds.
The outer wrap of flat square battery core has insulation gummed paper (sign), both can prevent battery core from scattering, and can form one deck dielectric film again between insulator and housing 10 inner surface, prevents housing 10 and battery core from causing short circuit.Lid 20 is sealed with positive terminal 70 by insulating material (such as glass insulator).Positive plate 30 is provided with the anode ear 31 be connected with positive terminal 70.Lid 20 upper surface is also welded with negative terminal 80, negative plate 40 is provided with negative electrode lug 41, negative electrode lug 41 can be connected with housing 10 or lid 20, makes housing 10 and lid 20 itself as battery cathode.
The outside of housing 10 is enclosed with one deck dielectric film, and positive terminal 70 and negative terminal 80 are through dielectric film 90, in atmosphere exposed.
Battery core of the present invention can have two kinds of structures: structure one and structure two.Wherein, as shown in Figure 2, battery core only comprises the strip negative pole 40 that a slice is wrapped up by barrier film 50 to structure one, and this strip negative pole 40 being surrounded by barrier film 50 is formed stacked through repeatedly bending reversion.Battery core comprises multi-disc positive plate 30, and this multi-disc positive plate 30 is separately positioned on negative plate 40 and bends between the lamination of reversion formation, the effect that formation positive pole, negative pole stack successively.
The preparation method of square lithium-ferrous disulfide battery mainly comprises making battery core, the battery core made is loaded the shell be substantially square, opening battery cover being welded on shell forms the seal casinghousing except liquid injection port, inject electrolyte in the housing, sealing liquid injection port, and step that is aging and test is carried out to battery, do not repeat them here.Wherein, the preparation method of structure one comprises step:
S101, is cut into monolithic by strip positive pole by preliminary dimension, and every sheet positive plate all leaves lug, and lug stretches out from the side of positive plate;
S102, cuts into strip by negative pole, and presses lug in the one end of the strip negative plate cut out, and lug is stretched out from the side of strip negative plate;
S103, barrier film parcel is pressed with the negative plate of lug, and lug is stretched out from the edge of barrier film;
S104, positive plate is overlayed on the septate negative plate of bag, make one end of positive plate and an end part aligning of negative plate, then septate for bag negative plate bending reversion is pressed on positive plate, on the septate negative plate of bag of reversion, stack positive plate again, the action then repeating to bend the reversion septate negative plate of bag and stack positive plate on the septate negative plate of bag of reversion makes lamination type electric core; And
S105, lamination type electric core outer wrapping barrier film also seals in barrier film end High temperature-resistanadhesive adhesive tape.
The battery core of structure two is takeup type, and it only comprises a slice strip positive plate, a slice strip negative plate and a slice strip barrier film.Be positioned at the head of the positive plate at center by barrier film bending reversion parcel, the head being positioned at the head distance positive plate of the negative plate at center has at least the volume pin of 3/4 circle to rotate length.
The preparation method of the battery core of structure two as shown in Figure 3, mainly comprises step:
S201, by the doubling of strip barrier film and alignment bosses on volume pin 11, control volume pin and revolve and turn around;
S202, head head being pressed with the strip positive plate of lug is placed on barrier film near volume pin, controls volume pin and rotates 3/4 circle;
S203, makes strip positive plate between barrier film the barrier film reversion on upper strata;
S204, head head being pressed with the strip negative plate of lug is placed on barrier film near volume pin, rotates volume pin until positive/negative plate winding is complete;
S205, seals in barrier film end High temperature-resistanadhesive adhesive tape.
In addition, the preparation method of positive pole comprises:
Bonding agent and solvent are put into mixer and carry out revolution with pre-provisioning request and glue is made in rotation;
Add positive electrode active materials stirring add the conductive agent stirring scheduled time in glue after and make anode sizing agent;
By predetermined face density, anode sizing agent is coated on collector, and at a predetermined temperature slurry is dried;
Be cut to strip by after the collector pair roller roll-in being coated with slurry point, and soldering polar ear makes positive plate respectively.
When the square lithium-ferrous disulfide battery of actual assembled, first the battery core of flat square is made, again at the outside of battery core parcel high-temperature insulation gummed paper, need by the anode ear 31 on positive plate 30 while parcel high-temperature insulation gummed paper, negative electrode lug 41 on negative plate 40 is in atmosphere exposed through the outside of insulation gummed paper, then this battery core is inserted in housing 10, make positive and negative lug 31, 41 opening parts being in housing 10, by spot welding, the negative electrode lug 41 that negative plate 40 is arranged is welded on the shell wall of housing 10 opening part again, housing 10 is made to become the negative pole of battery, again the anode ear 31 that positive plate 30 is arranged is welded with the positive terminal 70 on lid 20, for avoiding positive and negative lug positive and negative 31, mutually touch between 41 and cause battery short circuit, lug 31, 41 except respectively with except the welding position of housing 10 and positive terminal 70, all the other exposed aerial parts all need coated high-temperature insulation gummed paper, then lid 20 and housing 10 are welded together, make housing 10 and the negative pole as battery of lid 20 own, then inject electrolyte from liquid injection port and seal liquid injection port, insulating cement is sticked on last surface again on lid 20 except positive terminal 70 and negative terminal 80, then the bread that housing 10 outside contacts with air is wrapped dielectric film 90, complete the assembling of a cell, this cell can be directly installed on the power supply place of electronic equipment.
Square lithium-ferrous disulfide battery manufacture method of the present invention is simple, be convenient to produce in batches, according to the requirement customization various sizes of application product, can fill a hole in the market.Be mainly used in the high-end electronic products such as portable music player in the market, electronic dictionary, palmtop PC, digital camera and electric shaver, be enough to meet many-sided demand of client on market.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (3)
1. a square lithium-ferrous disulfide battery, it comprise substantially be square housing, lid together with case weld, be arranged on battery core in housing and electrolyte, described battery core comprises the barrier film of positive plate, negative plate and isolation positive/negative plate; Positive plate comprises ferrous disulfide, negative plate is lithium sheet, it is characterized in that, described battery core is takeup type, comprise a slice strip positive plate, a slice strip negative plate and a slice strip barrier film, be positioned at the head of the positive plate at center by barrier film bending reversion parcel, the head being positioned at the head distance positive plate of the negative plate at center has at least the volume pin of 3/4 circle to rotate length.
2. the preparation method of a square lithium-ferrous disulfide battery, comprise making battery core, the battery core made is loaded the shell be substantially square, opening battery cover being welded on shell forms the seal casinghousing except liquid injection port, inject electrolyte in the housing, sealing liquid injection port, and aging and test is carried out to battery; Described battery core is takeup type, comprise a slice strip positive plate, a slice strip negative plate and a slice strip barrier film, be positioned at the head of the positive plate at center by barrier film bending reversion parcel, the head being positioned at the head distance positive plate of the negative plate at center has at least the volume pin of 3/4 circle to rotate length; It is characterized in that, the preparation method of battery core comprises step:
S201, by the doubling of strip barrier film and alignment bosses on volume pin, control volume pin and revolve and turn around;
S202, head head being pressed with the strip positive plate of lug is placed on barrier film near volume pin, controls volume pin and rotates 3/4 circle;
S203, makes strip positive plate between barrier film the barrier film reversion on upper strata;
S204, head head being pressed with the strip negative plate of lug is placed on barrier film near volume pin, rotates volume pin until positive/negative plate winding is complete;
S205, seals in barrier film end High temperature-resistanadhesive adhesive tape.
3. the preparation method of square lithium-ferrous disulfide battery according to claim 2, is characterized in that, the preparation method of positive pole comprises:
Bonding agent and solvent are put into mixer and carry out revolution with pre-provisioning request and glue is made in rotation;
Add positive electrode active materials stirring add the conductive agent stirring scheduled time in glue after and make anode sizing agent;
By predetermined face density, anode sizing agent is coated on collector, and at a predetermined temperature slurry is dried;
Be cut to strip by after the collector pair roller roll-in being coated with slurry point, and soldering polar ear makes positive plate respectively.
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| CN201210221426.0A CN102738418B (en) | 2012-06-30 | 2012-06-30 | Square lithium-ferrous disulfide battery and preparation method thereof |
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| CN201210221426.0A CN102738418B (en) | 2012-06-30 | 2012-06-30 | Square lithium-ferrous disulfide battery and preparation method thereof |
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| CN102738418B true CN102738418B (en) | 2015-08-12 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103199305A (en) * | 2013-03-18 | 2013-07-10 | 东莞新能源科技有限公司 | Lithium ion battery cell and preparation method thereof |
| CN103682460A (en) * | 2013-12-19 | 2014-03-26 | 深圳市吉阳自动化科技有限公司 | Stacking machine and stacking method thereof |
| CN106450105B (en) * | 2016-10-14 | 2019-12-13 | 中航锂电（洛阳）有限公司 | Porous composite material partition plate, preparation method thereof, composite structure battery cell and lithium ion battery |
| CN106848118B (en) * | 2017-03-21 | 2020-01-03 | 惠州亿纬锂能股份有限公司 | Button type lithium battery capacitor and assembling method thereof |
| CN111403822B (en) * | 2020-04-22 | 2024-07-16 | 惠州亿纬锂能股份有限公司 | Lithium battery and manufacturing method thereof |
| CN112467230B (en) * | 2020-12-02 | 2022-02-15 | 珠海冠宇电池股份有限公司 | Battery cell and lithium ion battery |
| CN117810512A (en) * | 2023-12-26 | 2024-04-02 | 东莞市创明电池技术有限公司 | Manufacturing method of square and round winding battery core |
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