CN109671896A - A kind of thin type lithium-manganese flexible-packed battery that safety is good - Google Patents

A kind of thin type lithium-manganese flexible-packed battery that safety is good Download PDF

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Publication number
CN109671896A
CN109671896A CN201811528885.7A CN201811528885A CN109671896A CN 109671896 A CN109671896 A CN 109671896A CN 201811528885 A CN201811528885 A CN 201811528885A CN 109671896 A CN109671896 A CN 109671896A
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CN
China
Prior art keywords
lithium
battery
manganese
electrolyte
thin type
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
Application number
CN201811528885.7A
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Chinese (zh)
Inventor
何献文
劳忠奋
潘文硕
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Huizhou City Hui Derui Lithium Polytron Technologies Inc
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Huizhou City Hui Derui Lithium Polytron Technologies Inc
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Priority to CN201811528885.7A priority Critical patent/CN109671896A/en
Publication of CN109671896A publication Critical patent/CN109671896A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)
  • Primary Cells (AREA)

Abstract

The invention belongs to chemical cell fields, more particularly to a kind of thin type lithium-manganese flexible-packed battery that safety is good, it includes cavity made of being fastened as cardboard and blister cover, battery pack is equipped in the cavity, along setting, there are two electrode circular hole, the line of centres parallel cardboard upper side edge edges of two electrode circular holes on the cardboard;Metal square piece is covered each by and is pasted on two electrode circular holes, and the battery pack is connected in series by lithium-manganese cell core by PTC;The metal square piece with battery pack is connect by electric resistance welding or laser welding or soldering mode;The lithium-manganese cell core includes positive/negative plate and electrolyte;The electrolyte includes organic solvent and electrolyte.For the safety issue for solving battery, the lithium-manganese cell core electrolyte is the mixing lithium salts of difluorine oxalic acid boracic acid lithium and lithium perchlorate;Battery structure of the present invention is formed plus the unique of electrolyte, so that battery of the present invention has discharging efficiency high, using safe feature, especially suitable for camera battery.

Description

A kind of thin type lithium-manganese flexible-packed battery that safety is good
Technical field
The present invention relates to the good thin type lithium-manganese flexible-packed batteries of a kind of chemical cell field more particularly to a kind of safety.
Background technique
Existing Polaroid camera power consumption is larger, and common dry cell is unable to satisfy its requirement.Lithium-manganese cell is as special The industrial use battery of industry, does not allow to be readily available on the market, and there are hidden danger in the lithium battery safety of power-type, and camera As normal domestic electronic product, safety seems increasingly important again, therefore, designs a kind of can be built in phase carton Has high power discharge ability, and the bat with superelevation safety is vertical that camera battery is just very significant.Existing camera In battery, although some powers of battery reach, but mostly use parallel diode or other wiring boards in existing design greatly Mode protects battery, but practical operation is very complicated, and each battery will additionally increase a diode or wiring board, production It is complicated for operation.
Summary of the invention
In view of the above technical problems, high, safety that the technical problem to be solved by the invention is to provide a kind of discharging efficiencies It can thin type lithium-manganese flexible-packed battery.
The invention solves above-mentioned technical problems to be achieved through the following technical solutions: a kind of thin type lithium that safety is good Manganese flexible-packed battery, including the cavity as made of cardboard and blister cover fastening, the cavity is interior to be equipped with battery pack, the paper Along setting, there are two electrode circular hole, the line of centres parallel cardboard upper side edge edges of two electrode circular holes on plate;In two electrodes Metal square piece is covered each by and is pasted on circular hole, and the battery pack is connected in series by lithium-manganese cell core by PTC;Institute The metal square piece stated with battery pack is connect by electric resistance welding or laser welding or soldering mode;The lithium-manganese cell core includes Positive/negative plate and electrolyte;The electrolyte includes organic solvent and electrolyte, and the electrolyte is difluoro oxalate boric acid The mixing lithium salts of lithium and lithium perchlorate;The molar concentration ratio of the difluorine oxalic acid boracic acid lithium LiDFOB and lithium perchlorate LiCLO4 For 4:1~1:4.
Further, in the good thin type lithium-manganese flexible-packed battery of above-mentioned safety, the difluorine oxalic acid boracic acid lithium LiDFOB Molar concentration ratio with lithium perchlorate LiCLO4 is 2:1~1:2.Quality of the difluorine oxalic acid boracic acid lithium in mixing lithium salts Specific gravity is 10~90 ﹪, and preferred mass specific gravity is 10~60 ﹪.The organic solvent is propene carbonate PC, ethylene carbonate One of EC, dimethyl carbonate DMC, glycol dimethyl ether DME ﹑ dioxolanes DOL or a variety of mixtures.
The exit of the positive/negative plate be equipped with electrode leading-out sheet, the lithium-manganese cell core by electrode leading-out sheet with Metal disk connection.The electrode draws end and cardboard between this and is equipped with insulating surfaces pad.The lithium-manganese cell core is at least 2.
Compared with prior art, thin type lithium-manganese flexible-packed battery of the present invention, including as made of cardboard and blister cover fastening Cavity, the cavity is interior to be equipped with battery pack, and edge is set there are two electrode circular hole on the cardboard, and the center of two electrode circular holes connects Line parallel cardboard upper side edge edge;Metal square piece, the battery are covered each by and are pasted on two electrode circular holes Group is connected in series by lithium-manganese cell core by PTC;The metal square piece and battery pack is by electric resistance welding or Laser Welding It connects or soldering mode connects;The lithium-manganese cell core includes positive/negative plate and electrolyte;The electrolyte includes organic molten Agent and electrolyte, the electrolyte are the mixing lithium salts of difluorine oxalic acid boracic acid lithium and lithium perchlorate;The difluoro oxalate boric acid The molar concentration ratio of lithium LiDFOB and lithium perchlorate LiCLO4 is 4:1~1:4.Two poles in parallel are mostly used in existing design greatly The mode of pipe or other wiring boards protects battery, but practical operation is very complicated, and each battery will additionally increase by one Diode or wiring board.The present invention reduces operation complexity by the improvement of battery system to get rid of diode.From On the basis of not reducing battery capacity, solve the problems, such as that existing thin type lithium-manganese flexible-packed battery safety is poor.Electricity of the invention Pool structure is plus unique composition of electrolyte, so that battery of the invention has, discharging efficiency is high, using safe feature, especially Suitable for camera battery.
Detailed description of the invention
Fig. 1 is the battery explosion figure of the embodiment of the present invention 1;
Fig. 2 is the battery assembly figure of the embodiment of the present invention 1;
Wherein: 1 cardboard, 2 blister covers, 3 electrode circular holes, 4 metal square pieces, 5PTC, 6 lithium-manganese cell cores, 7 insulating surfaces pads.
Specific embodiment
Purport of the invention is to provide a kind of structure of camera battery, in conjunction with lithium battery electrolytes, i.e. difluoro oxalate boric acid Lithium LiDFOB, difluorine oxalic acid boracic acid lithium is used in mixed way with the higher lithium salts of conductivity, on the basis of not reducing battery capacity, solution The certainly problem of camera battery safety difference.The contents of the present invention are described in further detail in conjunction with the embodiments below by attached drawing, it is real Applying the content mentioned in example is not limitation of the invention, the selection of battery material can adaptation to local conditions and essence is had no to result Property influence.
Embodiment 1
Such as Fig. 1,2: a kind of thin type lithium-manganese flexible-packed battery that safety is good, including fastened by cardboard 1 and blister cover 2 Cavity, battery pack is equipped in the cavity, along setting there are two electrode circular hole 3 on the cardboard 1, in two electrode circular holes Heart line parallel cardboard upper side edge edge;Metal square piece 4 is covered each by and is pasted on two electrode circular holes 3, it is described Battery pack be connected in series by lithium-manganese cell core 6 by PTC 5;The metal square piece and battery pack is to pass through electric resistance welding Or laser welding or soldering mode connect;The lithium-manganese cell core includes positive/negative plate and electrolyte;The electrolyte packet Organic solvent and electrolyte are included, the electrolyte is the mixing lithium salts of difluorine oxalic acid boracic acid lithium and lithium perchlorate.The lithium Manganese cell core includes positive/negative plate and electrolyte;The electrolyte includes organic solvent and electrolyte, and the electrolyte is Lithium salts is mixed, the mixing lithium salts is difluorine oxalic acid boracic acid lithium and lithium perchlorate;The difluorine oxalic acid boracic acid lithium is in mixing lithium salts In quality specific gravity be 10~90 ﹪.The organic solvent be propene carbonate PC, ethylene carbonate EC, dimethyl carbonate DMC, One of glycol dimethyl ether DME ﹑ dioxolanes DOL or a variety of mixtures.The exit of the positive/negative plate is equipped with Electrode leading-out sheet, the lithium-manganese cell core are connect by electrode leading-out sheet with metal disk.The electrode draws end and cardboard This is equipped with insulating surfaces pad 7.The lithium-manganese cell core 6 is 2.Positive active material is manganese dioxide, conductive agent acetylene black With graphite, binder, pure water is added and is stirred until homogeneous, scattered anode active material slurry is coated on plus plate current-collecting body (316 stainless (steel) wires, 430 stainless (steel) wires, aluminium net, aluminium foil, copper foil are any), is cut into the positive plate of battery after rolling.Anode After piece passes through drying and completely removes moisture therein, in the environment of being put into relative humidity lower than 1.0%, in cathode (metallic aluminium Or lithium-aluminium alloy) and the intermediate insertion of positive plate play the role of separating the porous isolating membranes of positive and negative anodes, be wound into columned electricity Core, the battery core of winding are put into battery case (shell is steel shell, aluminum hull or aluminum plastic film), use difluorine oxalic acid boracic acid lithium LiDFOB, lithium perchlorate (LiCLO4) make lithium salts, difluorine oxalic acid boracic acid lithium LiDFOB and lithium perchlorate LiCLO4Molar concentration rate Value is 2:1, is assembled into battery.
Embodiment 2
By 1 the same manner of embodiment, difluorine oxalic acid boracic acid lithium (LiDFOB), lithium perchlorate (LiCLO are used4) make lithium salts, And difluorine oxalic acid boracic acid lithium LiDFOB and lithium perchlorate LiCLO4Molar concentration ratio be 1:1, be assembled into battery.
Embodiment 3
By 1 the same manner of embodiment, difluorine oxalic acid boracic acid lithium (LiDFOB), lithium perchlorate (LiCLO are used4) make lithium salts, And difluorine oxalic acid boracic acid lithium LiDFOB and lithium perchlorate LiCLO4Molar concentration ratio be 1:2, be assembled into battery.
Comparative example 4
By 1 the same manner of embodiment, the electrolyte is lithium perchlorate, and molar concentration is that the lithium battery of 1mol/L is non- Water electrolysis liquid, is assembled into battery.
The thin type lithium-manganese flexible-packed battery test method that above-described embodiment is made is as follows:
Shooting number is tested using Polaroid camera.
External short circuit: in room temperature environment, the resistance of 1 Ω of battery series connection is subjected to external short circuit, sustained short-circuit to battery Hull-skin temperature is at least further continued for short-circuit 1h after falling after rise to room temperature environment, continues to observe test sample 6h.Battery is in whole process In should not overheat, do not rupture, do not explode, is missing of ignition.
Heavy impact: battery is placed in a plane, and the steel column of a Φ 15.8mm is placed in battery center, the longitudinal axis of steel column It is parallel to plane, allows the weight of quality 9.1kg from the steel column that the height of 610mm is freely dropped into above battery center.Battery exists When receiving impact, the longitudinal axis should be parallel to plane, perpendicular to the longitudinal axis of steel column.Battery should not be overheated, not exploded, is missing of ignition.
Squeeze: disk squeezes battery with the initial velocity of 1.5cm/s, until extruding force reaches 13kN and releases immediately Pressure observes battery 6h.Battery should not be overheated, not exploded, is missing of ignition.
Forced electric discharge: battery is connected with 12V DC power supply at room temperature, with the electricity of maximum continuous discharge as defined in manufacturer Stream is used as initial current forced electric discharge.This test is carried out with the battery to discharge completely.After the end of the test, observation is by inspection battery 7d.Battery should not explode, is missing of ignition.
The experimental result of embodiment, as illustrated in chart 1:
It can be seen from chart 1 compared with comparative example 4, lithium salts (difluoro oxalate embodiment 1-3 good using thermal stability Lithium borate) it is used in mixed way with the higher lithium salts of conductivity, it is flammable by reducing electrolyte on the basis of keeping cell high-capacity Property, effectively improve the safety of lithium battery.
Above-described embodiment, only presently preferred embodiments of the present invention, the practical range being not intended to limit the invention, thus it is all with The equivalent change or modification that feature described in the claims in the present invention and principle are done should all be included in the claims in the present invention model Within enclosing.

Claims (7)

1. a kind of good thin type lithium-manganese flexible-packed battery of safety, including the chamber as made of cardboard (1) and blister cover (2) fastening Body, the cavity is interior to be equipped with battery pack, it is characterised in that:
Along setting, there are two electrode circular hole (3), the parallel cardboard upper side edges of the line of centres of two electrode circular holes on the cardboard (1) Edge;It is covered each by two electrode circular holes (3) and is pasted with metal square piece (4);
The battery pack is connected in series by lithium-manganese cell core (6) by PTC (5);
The metal square piece with battery pack is connect by electric resistance welding or laser welding or soldering mode;
The lithium-manganese cell core includes positive/negative plate and electrolyte;The electrolyte includes organic solvent and electrolyte, institute The electrolyte stated is the mixing lithium salts of difluorine oxalic acid boracic acid lithium and lithium perchlorate;The difluorine oxalic acid boracic acid lithium LiDFOB and high chlorine The molar concentration ratio of sour lithium LiCLO4 is 4:1~1:4.
2. the good thin type lithium-manganese flexible-packed battery of safety according to claim 1, it is characterised in that: the difluoro oxalate The molar concentration ratio of lithium borate LiDFOB and lithium perchlorate LiCLO4 is 2:1~1:2.
3. the good thin type lithium-manganese flexible-packed battery of safety according to claim 2, it is characterised in that: the difluoro oxalate Quality specific gravity of the lithium borate in mixing lithium salts is 10~90 ﹪.
4. the good thin type lithium-manganese flexible-packed battery of safety according to claim 3, it is characterised in that: the organic solvent For one of propene carbonate PC, ethylene carbonate EC, dimethyl carbonate DMC, glycol dimethyl ether DME ﹑ dioxolanes DOL Or a variety of mixture.
5. thin type lithium-manganese flexible-packed battery according to claim 1, it is characterised in that: the exit of the positive/negative plate Equipped with electrode leading-out sheet, the lithium-manganese cell core is connect by electrode leading-out sheet with metal square piece.
6. thin type lithium-manganese flexible-packed battery according to claim 5, it is characterised in that: the electrode draw end and cardboard this Between be equipped with insulating surfaces pad (7).
7. thin type lithium-manganese flexible-packed battery according to claim 6, it is characterised in that: the lithium-manganese cell core is at least 2.
CN201811528885.7A 2018-12-14 2018-12-14 A kind of thin type lithium-manganese flexible-packed battery that safety is good Pending CN109671896A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102263291A (en) * 2011-07-12 2011-11-30 诺莱特科技(苏州)有限公司 Electrolyte solution capable of improving safety of lithium manganese battery
CN102324532A (en) * 2011-08-08 2012-01-18 武汉昊诚能源科技有限公司 A kind of slim lithium manganese flexible-packed battery group and preparation method thereof
CN103378360A (en) * 2012-04-24 2013-10-30 张家港市国泰华荣化工新材料有限公司 Organic electrolyte capable of improving low-temperature performance of lithium manganese battery
CN106099131A (en) * 2016-06-17 2016-11-09 惠州市惠德瑞锂电科技股份有限公司 A kind of lithium battery electrolytes and the lithium primary battery of gained
CN209843824U (en) * 2018-12-14 2019-12-24 惠州市惠德瑞锂电科技股份有限公司 Thin lithium-manganese soft-package battery with good safety

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102263291A (en) * 2011-07-12 2011-11-30 诺莱特科技(苏州)有限公司 Electrolyte solution capable of improving safety of lithium manganese battery
CN102324532A (en) * 2011-08-08 2012-01-18 武汉昊诚能源科技有限公司 A kind of slim lithium manganese flexible-packed battery group and preparation method thereof
CN103378360A (en) * 2012-04-24 2013-10-30 张家港市国泰华荣化工新材料有限公司 Organic electrolyte capable of improving low-temperature performance of lithium manganese battery
CN106099131A (en) * 2016-06-17 2016-11-09 惠州市惠德瑞锂电科技股份有限公司 A kind of lithium battery electrolytes and the lithium primary battery of gained
CN209843824U (en) * 2018-12-14 2019-12-24 惠州市惠德瑞锂电科技股份有限公司 Thin lithium-manganese soft-package battery with good safety

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