CN205406621U - Battery monomer - Google Patents

Battery monomer Download PDF

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Publication number
CN205406621U
CN205406621U CN201620160614.0U CN201620160614U CN205406621U CN 205406621 U CN205406621 U CN 205406621U CN 201620160614 U CN201620160614 U CN 201620160614U CN 205406621 U CN205406621 U CN 205406621U
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China
Prior art keywords
battery cell
electrode terminal
longitudinal centre
line
periphery
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CN201620160614.0U
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Chinese (zh)
Inventor
崔恩硕
安寅究
尹秀珍
尹炯具
金东明
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LG Energy Solution Ltd
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LG Chemical Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
    • H01M50/461—Separators, membranes or diaphragms characterised by their combination with electrodes with adhesive layers between electrodes and separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/443—Particulate material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
    • H01M50/451—Separators, membranes or diaphragms characterised by the material having a layered structure comprising layers of only organic material and layers containing inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
    • H01M50/457—Separators, membranes or diaphragms characterised by the material having a layered structure comprising three or more layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • H01M50/491—Porosity
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The utility model discloses a battery monomer, this battery monomer includes battery case and installs the electrode subassembly in battery case, electrode subassembly includes the positive electrode, negative electrode and arrange the separator between positive electrode and negative electrode, wherein battery monomer has for the unsymmetrical structure that passes the longitudinal center line at battery monomer's center in electrode terminals's outstanding direction or for the unsymmetrical structure who passes the infusion set at battery monomer's center in the outstanding direction vertically direction with electrode terminals.

Description

Battery cell
The cross reference of related application
This application claims the priority of the korean patent application No.10-2015-0030848 that on March 5th, 2015 submits to Korean Intellectual Property Office, the disclosure of this application is integrally incorporated herein with it by way of reference.
Technical field
This utility model relates to the battery cell including having the separator strengthening bonding force.
Background technology
Along with mobile equipment and technology sustainable development and the demand about it continue to increase, secondary cell quickly increases as the demand of energy source.In these secondary cells, present high-energy-density and running voltage, there is long cycle life and there is the lithium secondary battery of low self-discharge rate commercially available and be widely used.
Recently, new battery cell type is needed according to the trend towards slim type or design.
In order to consider the design of equipment that battery applies and manufacture the battery cell with new structure, the capacity of battery cell should be reduced or equipment size should increase.
Therefore, in order to solve these problems, some prior aries constitute set of cells by the various sizes of battery cell of lamination.But, owing to such set of cells has the battery cell of lamination, so battery cell does not share electrochemical reaction betwixt so that the thickness of set of cells increases, and thus, the capacity of battery is likely to reduce.Additionally, due to such design amendment, electrical connection becomes complicated, and therefore, it is difficult to manufactures the battery cell meeting desired conditions.
Accordingly, there exist the needs developing following atypia battery cell, in atypia battery cell, the shape of electrode assemblie depends on that the shape of the equipment that battery cell applies changes.In order to manufacture such battery cell, must according to variously-shaped cutting separator after to electrode and separator lamination.But, in the case, when bonding force between electrode and separator is low, when cutting separator, separator slides, and therefore, it is difficult to accurately cuts separator.Additionally, be as noted previously, as generation separator sliding phenomenon during cutting, short circuit in-between the electrodes is further exacerbated by.These problems at present not yet solve as a result, except stacking there is various sizes of battery cell or there is various sizes of electrode assemblie except, it is difficult to develop irregular battery cell.
Utility model content
Technical problem
Therefore, make this utility model to solve problem above, and the purpose of this utility model is to provide a kind of irregular battery cell that can be configured with various structure.
Technical solution
Therefore, battery container and the electrode assemblie being arranged in this battery container are included according to battery cell of the present utility model.Electrode assemblie includes anelectrode, negative electrode and the separator being arranged between anelectrode and negative electrode, and wherein battery cell has the dissymmetrical structure relative to the dissymmetrical structure of the longitudinal centre line at the center of traverse battery cell on the projected direction of electrode terminal or the horizontal center line relative to the center being upward through battery cell in the side vertical with the projected direction of electrode terminal.
When performing separator cutting process further to manufacture irregular battery cell as above wherein, if the bonding strength between electrode and separator is low, then during the cutting of separator, separator is likely to slide so that is likely difficult to and accurately cuts separator.And, if separator slides when cutting separator, it is likely to be susceptible to short circuit between anelectrode and negative electrode.Owing to this utility model is based on solving problem above, so this utility model provides a kind of irregular battery cell.
Specifically, according to battery cell of the present utility model can have relative on the projected direction of electrode terminal through the dissymmetrical structure of line (longitudinal centre line) at the center of battery cell, or can have the dissymmetrical structure of line (horizontal center line) relative to the center being upward through battery cell in the side vertical with the projected direction of electrode terminal.Alternatively, can have the dissymmetrical structure relative to longitudinal centre line and horizontal center line according to battery cell of the present utility model.
More specifically, can include at least three periphery side according to battery cell of the present utility model when viewed from above, and electrode terminal can be formed on a place in the side of periphery or contrary two places in the side of periphery.
Therefore, in this utility model, center line based on the outer circumferential side margin that electrode terminal is prominent, and have and all fall within scope of the present utility model relative to asymmetrically shaped all batteries of this centrage.
More specifically, according to battery cell of the present utility model can be there is the triangular shaped battery cell including three periphery sides when viewed from above, the battery cell with the quadrangle form including four periphery sides when viewed from above, the battery cell with the shape changeable shape including five or more peripheries side when viewed from above or there is the battery cell of shape of some or all bendings being configured so that in the side of periphery.That is, the shape according to battery cell of the present utility model is not particularly limited, as long as battery cell is asymmetric relative to longitudinal centre line or horizontal center line.
In an example according to battery cell of the present utility model, at least one in the side of periphery can be bending.In the case, based on longitudinal centre line or horizontal center line battery cell, a sidepiece being made up of longitudinal centre line or horizontal center line and periphery side can have the polygonal shape including three or more straight sided, and the other side of battery cell can have the shape of side and other straight sided including at least one bending.
According in another example of battery cell of the present utility model, all of periphery side can be straight.In the case, based on longitudinal centre line or horizontal center line battery cell, a sidepiece being made up of longitudinal centre line or horizontal center line and periphery side can have rectangular or square when shape, and the other side of battery cell can have the polygonal shape including three or more straight sided.
Meanwhile, battery cell is asymmetric relative to longitudinal centre line or horizontal center line while, it is possible to form opening in battery cell.
Battery cell can be secondary cell.Specifically, battery cell can be lithium secondary battery, such as lithium metal secondary batteries, lithium rechargeable battery, lighium polymer secondary battery or lithium ion polymer secondary cell.
Other composition according to battery cell of the present utility model is described below.
By the mixture of active positive electrode material, conductive material and binding agent is spread on anelectrode current collector, and can then be dried and manufacture anelectrode.As required, this mixture may further include filler.
Active positive electrode material includes two or more transition metal such as lithium transition-metal oxide, and can be such as that layered compound is such as with the lithium and cobalt oxides (LiCoO of one or more of transition metal replacement2), lithium nickel oxide (LiNiO2) etc.；The lithium manganese oxide substituted with one or more of transition metal；By molecular formula LiNi1-yMyO2The lithium nickel-based oxide that (wherein M includes at least one in Co, Mn, Al, Cu, Fe, Mg, B, Cr, Zn and Ga and 0.01≤y≤0.7) represents；By molecular formula Li1+zNibMncCo1-(b+c+d)MdO(2-e)Ae(wherein-0.5≤z≤0.5,0.1≤b≤0.8,0.1≤c≤0.8,0≤d≤0.2,0≤e≤0.2 and b+c+d < 1, M are Al, Mg, Cr, Ti, Si or Y, and A is F, P or Cl) such as Li1+zNi1/3Co1/3Mn1/3O2、Li1+zNi0.4Mn0.4Co0.2O2Deng the lithium nickel cobalt manganese oxide represented；By chemical formula Li1+xM1-yM'yPO4-zXzThe Fructus Canarii albi ground mass lithium metal phosphates that (wherein M is transition metal, it is preferred that Fe, Mn, Co or Ni, and M' is Al, Mg or Ti, and X is F, S or N ,-0.5≤x≤+ 0.5,0≤y≤0.5 and 0≤z≤0.1) represents；Like this, but this utility model is not limited to this.
Positive electrode collector is typically made into the thickness of 3 μm to 500 μm.Positive electrode collector is not particularly limited, as long as it does not cause chemical change in manufactured secondary cell and has high conductivity.Such as, positive electrode collector can by rustless steel, aluminum, nickel, titanium, sintering carbon or carry out surface-treated aluminum or rustless steel etc. with carbon, nickel, titanium, silver.Positive electrode collector can have tiny concaveconvex shape to increase the bonding force between active positive electrode material and positive electrode collector in its surface.Furthermore, it is possible to any one including in a variety of forms in film, sheet, paper tinsel, net, loose structure, foam and non-woven fabrics uses positive electrode collector.
It is commonly angled relative to the gross weight including the mixture of active positive electrode material and adds conductive material with the amount of 1wt% to 50wt%.Conductive material is not particularly limited, as long as it does not cause chemical change in manufactured secondary cell and has high conductivity.The example of conductive material includes that graphite is such as natural or Delanium；White carbon black such as white carbon black, acetylene black, Ketjen black, channel black, furnace black, dim and thermal black；Conductive fiber such as carbon fiber and metallic fiber；Metal powder is fluoride carbon dust, aluminium powder and nikel powder such as；Electric conductivity whisker such as zinc oxide and potassium titanate；Conductive metal oxide is titanium oxide such as；And polyphenylene derivant.
Binding agent is to aid in the bonding between active material and conductive material and the electrode active material component to the bonding of electrode current collector.It is commonly angled relative to the gross weight including the mixture of active positive electrode material and adds binding agent with the amount of 1wt% to 50wt%.The example of binding agent includes polyvinylidene fluoride, polyvinyl alcohol, carboxymethyl cellulose (CMC), starch, hydroxypropyl cellulose, regenerated cellulose, polyvinylpyrrolidone, tetrafluoroethene, polyethylene, polypropylene, ethylene-propylene-diene terpolymer (EPDM), the EPDM of sulfonation, SBR styrene butadiene rubbers, fluorubber and various copolymer.
The component that filler optionally is used as suppressing anelectrode to expand.Filler is not particularly limited, as long as it is the fibrous material not causing chemical change in manufactured battery.The example of filler includes olefin-based polymer such as polyethylene and polypropylene；And fibrous material such as glass fibre and carbon fiber.
By negative electrode active material is coated on negative electrode current collector, dry and extruding manufacture negative electrode, and as required, it is possible to optionally farther include conductive material, binding agent, filler etc..
Can be such as carbon and graphite material such as native graphite, Delanium, expansible graphite, carbon fiber, hard carbon, white carbon black, CNT, fullerene and activated carbon according to negative electrode active material of the present utility model；Can with the metal of lithium alloyage such as Al, Si, Sn, Ag, Bi, Mg, Zn, In, Ge, Pb, Pd, Pt and Ti and the compound including these elements；The complex of metal and their compound and the complex of carbon and graphite material；And containing lithium nitride.Wherein, carbon-based active material, silicon-based active material, tin-based active material or silico-carbo based active material are it is furthermore preferred that and can be used alone or use with the form of two of which or more combination.
Negative electrode current collector is typically manufactured to the thickness of 3 μm to 500 μm.Negative electrode current collector is not particularly limited, as long as it does not cause chemical change in manufactured secondary cell and has high conductivity.Such as, negative electrode current collector can by copper, rustless steel, aluminum, nickel, titanium, sintering carbon, carry out surface-treated copper or rustless steel etc. with carbon, nickel, titanium or silver.Similar with positive electrode collector, negative electrode current collector can have tiny concaveconvex shape to strengthen the bonding force between negative electrode active material and negative electrode current collector in its surface.Furthermore, it is possible to any one including in a variety of forms in film, sheet, paper tinsel, net, loose structure, foam and non-woven fabrics uses negative electrode current collector.
Simultaneously, the battery container being wherein embedded with the electrode assemblie including anelectrode, negative electrode and separator can be the pouch type battery housing being made up of laminate, and laminate includes the external skin being made up of weather resistant polymer, the inner containment layer being made up of hot-melt polymer and the barrier layer being placed between external skin and inner containment layer.Especially, the barrier layer of pouch-shaped battery case can be made up of aluminum (Al) laminate.
Additionally, except electrode assemblie, can further include the nonaqueous electrolytic solution containing lithium salts according to battery cell of the present utility model.Especially, can have wherein structure with the nonaqueous electrolytic solution impregnated electrode assembly containing lithium salts according to battery cell of the present utility model.
Nonaqueous electrolytic solution containing lithium salts is made up of nonaqueous electrolytic solution and lithium salts, and the example of nonaqueous electrolytic solution includes non-aqueous organic solvent, organic solid electrolyte based, inorganic solid electrolyte etc., but this utility model is not limited to this.
The example of non-aqueous organic solvent includes non-proton organic solvent such as METHYLPYRROLIDONE, Allyl carbonate, ethylene carbonate, butylene carbonate, dimethyl carbonate, diethyl carbonate, gamma-butyrolacton, 1, 2-dimethoxy-ethane, oxolane, 2-methyltetrahydrofuran, dimethyl sulfoxide, 11, 3-dioxolanes, Methanamide, dimethylformamide, dioxolanes, acetonitrile, Nitrocarbol., methyl formate, methyl acetate, phosphotriester, trimethoxy-methane, dioxolane derivatives, sulfolane, methyl sulfolane, 1, 3-dimethyl-2-imidazolidinone, polypropylene carbonate ester derivant, tetrahydrofuran derivatives, ether, methyl propionate, ethyl propionate etc..
The example of organic solid electrolyte based includes but not limited to polythene derivative, polyethylene oxide derivant, poly propylene oxide derivative, phosphate ester polymer, poly-stirring lysine, polyester sulfide, polyvinyl alcohol, polyvinylidene fluoride and the polymer containing ionic dissociation groups.
The example of inorganic solid electrolyte includes but not limited to the nitride of lithium (Li), halogenide and sulfate such as Li3N、LiI、Li5NI2、Li3N-LiI-LiOH、LiSiO4、LiSiO4-LiI-LiOH、Li2SiS3、Li4SiO4、Li4SiO4-LiI-LiOH、Li3PO4-Li2S-SiS2。
Lithium salts is a kind of material being easily dissolved in nonaqueous electrolytic solution and its example includes but not limited to LiCl, LiBr, LiI, LiClO4、LiBF4、LiB10Cl10、LiPF6、LiCF3SO3、LiCF3CO2、LiAsF6、LiSbF6、LiAlCl4、CH3SO3Li、(CF3SO2)2NLi, chloroborane lithium, lower alphatic carboxylic acid lithium, tetraphenylboronic acid lithium and amide.
In addition, in order to improve charge/discharge characteristics and fire resistance, such as pyridine, NSC 5284, triethanolamine, cyclic ethers, ethylenediamine, positive glyme, six phosphoric triamides, nitrobenzene derivative, sulfur, quinoneimine dye, N-substituted oxazoline alkanone, N, N-substituted imidazole alkane, glycol dialkyl ether, ammonium salt, pyrroles, 2-methyl cellosolve, aluminum chloride can be added to electrolyte.If it is required, in order to give incombustibility, electrolyte can farther include halogen-containing solvent such as carbon tetrachloride and trifluoro-ethylene.And, in order to strengthen high-temperature storage characteristics, electrolyte can farther include carbon dioxide, fluorine ethylene carbonate (FEC), propene sultone (PRS), fluorine Allyl carbonate (FPC) etc..
In a preferred embodiment, it is possible to by including EC or PC as high dielectric solvent and cyclic carbonate and the mixed solvent interpolation lithium salts such as LiPF as low viscosity solvent and DEC, DMC or EMC of linear carbonate6,LiClO4,LiBF4Or LiN (SO2CF3)2Prepare the nonaqueous electrolytic solution containing lithium salts.
Additionally, this utility model provides a kind of battery cell that includes as the battery module of element cell, a kind of set of cells including this battery module and a kind of equipment including this set of cells.
The particular example of equipment includes electric vehicle and electric energy storage device, and described electric vehicle and electric energy storage device include mobile phone, portable computer, smart phone, tablet personal computer (PC), Intelligent flat, netbook computer, wearable device, lightweight electric powered vehicles (LEV), electric vehicle (EV), hybrid electric vehicle (HEV), plug-in hybrid electric vehicle (PHEV) etc..
The structure of battery module and set of cells and manufacture method, and the structure of equipment and manufacture method be known in the art, and thus, omit its detailed description.
Effect of the present utility model
Can have relative to the dissymmetrical structure of the line (longitudinal centre line) at the center of traverse battery cell on the projected direction of electrode terminal according to battery cell of the present utility model, or can have the dissymmetrical structure of line (horizontal center line) relative to the center being upward through battery cell in the side vertical with the projected direction of electrode terminal so that battery cell can with wherein can use battery cell the internal structure of likely equipment corresponding.Therefore, can be used according to battery cell of the present utility model having in the equipment of different designs.
Accompanying drawing explanation
Fig. 1 is the view illustrating the example relative to the irregular battery cell with the line (horizontal center line) at the center being upward through battery cell in the side vertical with the projected direction of electrode terminal on the projected direction of electrode terminal with dissymmetrical structure through the line (longitudinal centre line) at center of battery cell；
Fig. 2 is the view illustrating the example relative to the irregular battery cell through the line (longitudinal centre line) at the center of battery cell on the projected direction of electrode terminal with dissymmetrical structure；
Fig. 3 is the view illustrating another example relative to the irregular battery cell through the line (longitudinal centre line) at the center of battery cell on the projected direction of electrode terminal with dissymmetrical structure；
Fig. 4 is the view of the example illustrating the irregular battery cell relative to the line (horizontal center line) at the center being upward through battery cell in the side vertical with the projected direction of electrode terminal with dissymmetrical structure；
Fig. 5 is the view of another example illustrating the irregular battery cell relative to the line (horizontal center line) at the center being upward through battery cell in the side vertical with the projected direction of electrode terminal with dissymmetrical structure；
Fig. 6 is the view of another example illustrating the irregular battery cell relative to the line (horizontal center line) at the center being upward through battery cell in the side vertical with the projected direction of electrode terminal with dissymmetrical structure；
Fig. 7 is the view illustrating another example relative to the irregular battery cell with the line (horizontal center line) at the center being upward through battery cell in the side vertical with the projected direction of electrode terminal on the projected direction of electrode terminal with dissymmetrical structure through the line (longitudinal centre line) at center of battery cell；
Fig. 8 is the view illustrating another example relative to the irregular battery cell with the line (horizontal center line) at the center being upward through battery cell in the side vertical with the projected direction of electrode terminal on the projected direction of electrode terminal with dissymmetrical structure through the line (longitudinal centre line) at center of battery cell；And
Fig. 9 is the view of the example illustrating the irregular battery cell relative to the line (horizontal center line) at the center being upward through battery cell in the side vertical with the projected direction of electrode terminal with dissymmetrical structure, is wherein formed with opening in battery cell.
Detailed description of the invention
Now, exemplary embodiment of the present utility model it is more fully described with reference to the accompanying drawings.However, it should be noted that scope of the present utility model is not limited by shown embodiment.
Fig. 1 to Fig. 9 schematically shows the example of battery cell, this battery cell have relative on the projected direction of electrode terminal through the dissymmetrical structure of the line (longitudinal centre line) at the center of battery cell, relative to the center being upward through battery cell in the side vertical with the projected direction of electrode terminal line (horizontal center line) dissymmetrical structure or relative to the dissymmetrical structure of longitudinal centre line and horizontal center line.
Specifically, the battery cell of Fig. 1 includes three straight periphery sides, and a place forms electrode terminal wherein.Fig. 1 has relative to the line (longitudinal centre line being illustrated by the broken lines at the center of traverse battery cell on the projected direction of electrode terminal, be represented by dotted lines) with the dissymmetrical structure of the line (horizontal center line is represented by dotted lines) being illustrated by the broken lines at the center being upward through battery cell in the side vertical with the projected direction of electrode terminal.
The battery cell of Fig. 2 includes periphery side and three straight periphery sides, the one of which place formation electrode terminal of a bending.The battery cell of Fig. 2 has dissymmetrical structure relative to longitudinal centre line.Specifically, based on longitudinal centre line Fig. 2 battery cell, a sidepiece A being made up of longitudinal centre line and periphery side can have the shape of side and other straight sided including at least one bending, and the other side B of the battery cell of Fig. 2 can have the rectangular shape including four straight sided.
The battery cell of Fig. 3 includes five straight periphery sides, and one of which place forms electrode terminal.The battery cell of Fig. 3 has dissymmetrical structure relative to longitudinal centre line.Specifically, based on longitudinal centre line Fig. 3 battery cell, a sidepiece A being made up of longitudinal centre line and periphery side can have the rectangular shape including four straight sided, and the other side B of the battery cell of Fig. 3 can have the pentagon shaped including five straight sided.
The battery cell of Fig. 4 and Fig. 6 each include six straight periphery sides, and relative to horizontal center line, there is dissymmetrical structure.Specifically, based on each in the battery cell of Fig. 4 and Fig. 6 of horizontal center line, a sidepiece A being made up of horizontal center line and periphery side can have the rectangular shape including four straight sided, and in the battery cell of Fig. 4 and Fig. 6, the other side B of each can have the hexagonal shape including six straight sided.
The battery cell part different from each other of Fig. 4 and Fig. 5 is in that, forms electrode terminal a periphery side edge, but the periphery side forming the battery cell of Fig. 4 of electrode terminal is not corresponding with the periphery side of the battery cell of the Fig. 5 forming electrode terminal.Meanwhile, the battery cell of Fig. 6 and the battery cell of Fig. 4 and Fig. 5 are different in that, form an electrode terminal in outside, a periphery and form another electrode terminal in contrary outside, periphery.
Meanwhile, the battery cell of Fig. 7 includes seven straight periphery sides, and the battery cell of Fig. 8 includes nine straight periphery sides.In the battery cell of Fig. 7 and Fig. 8, a place in the side of periphery forms electrode terminal.Additionally, each has dissymmetrical structure relative to longitudinal centre line and horizontal center line in the battery cell of Fig. 7 and Fig. 8.Especially, based in the battery cell of longitudinal centre line each, a sidepiece being made up of longitudinal centre line and periphery side from the other side of each in battery cell, there is different polygonal shapes.Additionally, based in the battery cell of horizontal center line each, a sidepiece being made up of horizontal center line and periphery side from the other side of each in battery cell, there is different polygonal shapes.
The battery cell of Fig. 9 includes the periphery side that the battery cell with Fig. 4 is identical in shape, and thus has dissymmetrical structure relative to horizontal center line except forming opening in battery cell.Therefore, based on the battery cell of Fig. 9 of horizontal center line, in each two sidepiece being made up of horizontal center line and periphery side, each includes the periphery side of at least one bending.

Claims (10)

1. a battery cell, described battery cell includes battery container and the electrode assemblie being arranged in described battery container, and described electrode assemblie includes anelectrode, negative electrode and is arranged in the separator between described anelectrode and described negative electrode, it is characterised in that
Described battery cell has the dissymmetrical structure relative to the dissymmetrical structure of the longitudinal centre line at the center of the described battery cell of traverse on the projected direction of electrode terminal and/or the horizontal center line relative to the center being upward through described battery cell in the side vertical with the described projected direction of described electrode terminal.
2. battery cell according to claim 1, it is characterised in that described battery cell has relative to the dissymmetrical structure of the described longitudinal centre line at the center of the described battery cell of traverse on the described projected direction of described electrode terminal.
3. battery cell according to claim 1, it is characterised in that described battery cell has the dissymmetrical structure of the described horizontal center line relative to the center being upward through described battery cell the described side vertical with the described projected direction of described electrode terminal.
4. battery cell according to claim 1, it is characterized in that, described battery cell includes at least three periphery side when viewed from above, and described electrode terminal is formed on a place in the side of described periphery or contrary two places in the side of described periphery.
5. battery cell according to claim 4, it is characterised in that at least one in the side of described periphery is bending.
6. battery cell according to claim 5, wherein, with described longitudinal centre line or described horizontal center line for benchmark, the sidepiece being made up of described longitudinal centre line or described horizontal center line and periphery side of described battery cell has the polygonal shape including three or more straight sided, and the other side of described battery cell has the shape of side and other straight sided including at least one bending.
7. battery cell according to claim 4, wherein, all of described periphery side is all straight.
8. battery cell according to claim 7, wherein, with described longitudinal centre line or described horizontal center line for benchmark, the sidepiece being made up of described longitudinal centre line or described horizontal center line and periphery side of described battery cell has rectangular or square when shape, and the other side of described battery cell has the polygonal shape including three or more straight sided.
9. battery cell according to claim 1, wherein, forms opening in described battery cell.
10. battery cell according to claim 1, wherein, described battery cell has dissymmetrical structure relative to the described longitudinal centre line at center of the described battery cell of traverse on the described projected direction of described electrode terminal with the described horizontal center line at the center being upward through described battery cell the described side vertical with the described projected direction of described electrode terminal.
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