CN106252589A - A kind of flexible battery and flexible battery group - Google Patents
A kind of flexible battery and flexible battery group Download PDFInfo
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- CN106252589A CN106252589A CN201510325072.8A CN201510325072A CN106252589A CN 106252589 A CN106252589 A CN 106252589A CN 201510325072 A CN201510325072 A CN 201510325072A CN 106252589 A CN106252589 A CN 106252589A
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- 239000007774 positive electrode material Substances 0.000 claims abstract description 82
- 150000002500 ions Chemical class 0.000 claims description 83
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 41
- 229910052744 lithium Inorganic materials 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 22
- 239000007769 metal material Substances 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 17
- 229910052760 oxygen Inorganic materials 0.000 claims description 17
- 239000001301 oxygen Substances 0.000 claims description 17
- 229910044991 metal oxide Inorganic materials 0.000 claims description 16
- 150000004706 metal oxides Chemical class 0.000 claims description 16
- 229910003002 lithium salt Inorganic materials 0.000 claims description 14
- 159000000002 lithium salts Chemical class 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 229910012312 LiPOx Inorganic materials 0.000 claims description 10
- RLTFLELMPUMVEH-UHFFFAOYSA-N [Li+].[O--].[O--].[O--].[V+5] Chemical compound [Li+].[O--].[O--].[O--].[V+5] RLTFLELMPUMVEH-UHFFFAOYSA-N 0.000 claims description 10
- KFDQGLPGKXUTMZ-UHFFFAOYSA-N [Mn].[Co].[Ni] Chemical compound [Mn].[Co].[Ni] KFDQGLPGKXUTMZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 10
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 claims description 10
- CASZBAVUIZZLOB-UHFFFAOYSA-N lithium iron(2+) oxygen(2-) Chemical compound [O-2].[Fe+2].[Li+] CASZBAVUIZZLOB-UHFFFAOYSA-N 0.000 claims description 10
- 229910002102 lithium manganese oxide Inorganic materials 0.000 claims description 10
- 229910000686 lithium vanadium oxide Inorganic materials 0.000 claims description 10
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 claims description 10
- VLXXBCXTUVRROQ-UHFFFAOYSA-N lithium;oxido-oxo-(oxomanganiooxy)manganese Chemical compound [Li+].[O-][Mn](=O)O[Mn]=O VLXXBCXTUVRROQ-UHFFFAOYSA-N 0.000 claims description 10
- URIIGZKXFBNRAU-UHFFFAOYSA-N lithium;oxonickel Chemical compound [Li].[Ni]=O URIIGZKXFBNRAU-UHFFFAOYSA-N 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 22
- 239000007784 solid electrolyte Substances 0.000 description 21
- 238000002360 preparation method Methods 0.000 description 14
- 239000013078 crystal Substances 0.000 description 12
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 9
- 239000010408 film Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229910002993 LiMnO2 Inorganic materials 0.000 description 6
- 229910013027 LiVxOy Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 229910001416 lithium ion Inorganic materials 0.000 description 6
- 239000007773 negative electrode material Substances 0.000 description 6
- 238000005240 physical vapour deposition Methods 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910003405 Li10GeP2S12 Inorganic materials 0.000 description 3
- 229910012820 LiCoO Inorganic materials 0.000 description 3
- 229910032387 LiCoO2 Inorganic materials 0.000 description 3
- 229910010584 LiFeO2 Inorganic materials 0.000 description 3
- 229910052493 LiFePO4 Inorganic materials 0.000 description 3
- 229910003005 LiNiO2 Inorganic materials 0.000 description 3
- 229910012305 LiPON Inorganic materials 0.000 description 3
- 229910012949 LiV2O4 Inorganic materials 0.000 description 3
- 229910012981 LiVO2 Inorganic materials 0.000 description 3
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- GRQJZSJOACLQOV-UHFFFAOYSA-N [Li].[N] Chemical group [Li].[N] GRQJZSJOACLQOV-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000010405 anode material Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000010406 cathode material Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 238000005289 physical deposition Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
-
- 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)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The embodiment of the invention discloses a kind of flexible battery and flexible battery group.Described flexible battery includes: conductive layer, ion conducting layer and positive electrode material layer；Described conductive layer includes the first conductive layer and the second conductive layer；Wherein, described positive electrode material layer covers the first surface at described first conductive layer；Described ion conducting layer covers the first surface at described positive electrode material layer；Described second conductive layer covers the first surface at described ion conducting layer；Wherein, the thickness of described conductive layer, described ion conducting layer and described positive electrode material layer is respectively less than first threshold, Second Threshold and the 3rd threshold value so that described flexible battery has flexibility.
Description
Technical Field
The invention relates to a battery technology, in particular to a flexible battery and a flexible battery pack.
Background
With the continuous development of electronic technology, electronic devices tend to be light, thin, small and intelligent. Flexible devices are becoming increasingly a new power source in the direction of being lightweight, thin, small, and intelligent, such as flexible screens, flexible cell phones, flexible wristwatches, and the like. The realization of flexible devices, a very critical component, is the flexibility of the battery. In the prior art, no effective solution is available at present how to realize the flexibility of the battery.
Disclosure of Invention
In order to solve the existing technical problems, embodiments of the present invention provide a flexible battery and a flexible battery pack, which can achieve flexibility of the battery.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
the present invention provides a flexible battery, comprising: a conductive layer, an ion conductive layer, and a positive electrode material layer; the conductive layer comprises a first conductive layer and a second conductive layer; wherein,
the positive electrode material layer covers the first surface of the first conducting layer; the ion conducting layer covers the first surface of the positive electrode material layer; the second conductive layer covers the first surface of the ion conductive layer;
wherein the thicknesses of the electrically conductive layer, the ion conductive layer, and the positive electrode material layer do not exceed a first threshold, a second threshold, and a third threshold, respectively, such that the flexible battery has flexibility.
Preferably, the material of the conductive layer is a metal material.
Preferably, theThe material of the ion conducting layer comprises a lithium-containing metal oxide; the lithium-containing metal oxide includes: LiPOxNy(ii) a Wherein x and y are both positive numbers.
Preferably, the material of the positive electrode material layer comprises oxygen-containing lithium salt of metal; the oxygen-containing lithium salt of the metal comprises one of the following substances: lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, manganese nickel cobalt composite oxide, lithium vanadium oxide, lithium iron oxide.
Preferably, the flexible battery further comprises a lead region, the lead comprising a first lead region and a second lead region; the first lead pad is in contact with a second surface of the first conductive layer; the second lead pad is in contact with a first surface of the second conductive layer.
Preferably, the material of the lead area is a metal material.
The invention also provides a flexible battery pack, which comprises at least two flexible batteries; the at least two flexible batteries are stacked such that a first surface of a first flexible battery and a second surface of a second flexible battery are adjacent in two adjacent flexible batteries; the at least two flexible batteries are connected in series;
wherein the flexible battery includes: a conductive layer, an ion conductive layer, and a positive electrode material layer; the conductive layer comprises a first conductive layer and a second conductive layer; wherein,
the positive electrode material layer covers the first surface of the first conducting layer; the ion conducting layer covers the first surface of the positive electrode material layer; the second conductive layer covers the first surface of the ion conductive layer;
wherein the thicknesses of the electrically conductive layer, the ion conductive layer, and the positive electrode material layer do not exceed a first threshold, a second threshold, and a third threshold, respectively, such that the flexible battery has flexibility.
Preferably, the material of the ion conducting layer comprises a lithium-containing metalAn oxide; the lithium-containing metal oxide includes: LiPOxNy(ii) a Wherein x and y are both positive numbers.
Preferably, the material of the positive electrode material layer comprises oxygen-containing lithium salt of metal; the oxygen-containing lithium salt of the metal comprises one of the following substances: lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, manganese nickel cobalt composite oxide, lithium vanadium oxide, lithium iron oxide. .
Preferably, the flexible battery further comprises a lead region, the lead region comprising a first lead region and a second silver lead region; the first lead pad is in contact with a second surface of the first conductive layer; the second lead pad is in contact with a first surface of the second conductive layer.
The embodiment of the invention provides a flexible battery and a flexible battery pack, wherein the flexible battery comprises: a conductive layer, an ion conductive layer, and a positive electrode material layer; the conductive layer comprises a first conductive layer and a second conductive layer; wherein the positive electrode material layer covers the first surface of the first conductive layer; the ion conducting layer covers the first surface of the positive electrode material layer; the second conductive layer covers the first surface of the ion conductive layer; wherein the thicknesses of the electrically conductive layer, the ion conductive layer, and the positive electrode material layer do not exceed a first threshold, a second threshold, and a third threshold, respectively, such that the flexible battery has flexibility. Therefore, by adopting the technical scheme of the flexible battery provided by the embodiment of the invention, the thickness of each material layer in the flexible battery does not exceed the corresponding threshold value, so that the total thickness of the flexible battery meets the requirement of the flexible battery on having the flexible characteristic, and the flexibility of the battery is realized. On the other hand, by adopting the technical scheme of the flexible battery pack provided by the embodiment of the invention, the output of a plurality of different output voltages is realized, so that the power supply for equipment with different working voltages is realized.
Drawings
Fig. 1 is a schematic structural diagram of a flexible battery according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a flexible battery according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a flexible battery pack according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example one
The embodiment of the invention provides a flexible battery. Fig. 1 is a schematic structural diagram of a flexible battery according to a first embodiment of the present invention; as shown in fig. 1, the flexible battery includes: an electrically conductive layer 11, an ion conductive layer 13, and a positive electrode material layer 12; the conductive layer 11 includes a first conductive layer 111 and a second conductive layer 112; wherein,
the positive electrode material layer 12 covers a first surface of the first conductive layer 111; the ion conducting layer 13 covers the first surface of the positive electrode material layer 12; the second conductive layer 112 covers a first surface of the ion conductive layer 13; wherein the thicknesses of the conductive layer 11, the ion conductive layer 13, and the positive electrode material layer 12 do not exceed a first threshold value, a second threshold value, and a third threshold value, respectively, so that the flexible battery has flexibility.
In this embodiment, the conductive layer 11 includes a first conductive layer 111 and a second conductive layer 112; the conducting layer 11 is used for collecting current so as to form larger current output; based on this, the first conductive layer 111 and the second conductive layer 112 included in the conductive layer 11 are respectively disposed outside the flexible battery; when the flexible battery is placed as shown in fig. 1, the first conductive layer 111 and the second conductive layer 112 are disposed at the topmost end and the bottommost end of the flexible battery, respectively. Specifically, the material of the conductive layer 11 is a metal material. Since the conductive layer 11 functions to collect current so as to form a larger current output, the resistivity of the metal material used for the conductive layer 11 is smaller, so as to avoid unnecessary energy loss. Preferably, the resistivity of the metal material used for the conductive layer 11 is not greater than the resistivity of aluminum metal at normal temperature, that is, the metal material used for the conductive layer 11 includes: gold, copper, aluminum, and the like, but are not limited to the above-described metal materials.
In this embodiment, the ion conducting layer 13 includes a solid electrolyte therein; the solid electrolyte comprises conductive ions and non-conductive ions; the non-conductive ions in the ion conducting layer 13 form a rigid skeleton, and there are more than conductive ions in the interior of the rigid skeleton, and these positions are connected with each other to form a one-dimensional tunnel type, two-dimensional planar type or three-dimensional conductive type ion diffusion channel, in which the conductive ions can move freely. Specifically, the solid electrolyte includes a lithium-containing metal oxide; the lithium-containing metal oxide includes: LiPOxNy(ii) a Wherein x and y are both positive numbers; it is understood that it contains on average 1 lithium (Li), one phosphorus (P), x oxygen (O) and y nitrogen (N) per molecule. Preferably, the lithium-containing metal oxide is lithium nitrogen-containing phosphate (LiPON). Of course, the solid electrolyte in the ion conductive layer 13 is not limited to LiPOxNyThe substance to be characterized may also be one of the sulfide-based solid electrolytes, such as LiaGePbSc(ii) a Wherein a, b and c are all positive numbers. The LiaGePbScSuch as Li10GeP2S12。
In this embodiment, the positive electrode material layer 12 includes a positive electrode material; the positive electrode material is specifically an oxygen-containing lithium salt of a metal. During charging, lithium ions are extracted from the crystal lattice of the anode material and inserted into the crystal lattice of the cathode material after passing through the solid electrolyte, so that the cathode is rich in lithium and the anode is poor in lithium; during discharging, lithium ions are extracted from the crystal lattice of the negative electrode material and inserted into the crystal lattice of the positive electrode material after passing through the solid electrolyte, so that the positive electrode is rich in lithium and the negative electrode is poor in lithium. Thus, the difference between the potentials of the positive and negative electrode materials relative to the metallic lithium during the insertion and extraction of lithium ions forms the operating voltage of the flexible battery of the embodiment.
Specifically, the oxygen-containing lithium salt of the metal comprises one of the following substances: lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, manganese nickel cobalt composite oxide, lithium vanadium oxide, lithium iron oxide. Wherein the lithium cobalt oxide can be lithium cobaltate (LiCoO)2). The lithium nickel oxide may be lithium nickelate (LiNiO) specifically2). The lithium manganese oxide may be LiMnxOy(ii) a Wherein x and y are both positive numbers; the LiMnxOySpecifically, it may be LiMnO2And/or LiMn2O4. The manganese-nickel-cobalt composite oxide can be combined with LiCoO2、LiNiO2、LiMnO2Three layered materials. The lithium vanadium oxide may be LiVxOy(ii) a Wherein x and y are both positive numbers; the LiVxOySpecifically LiVO2、LiaV2O4、LibV3O8And LiV2O4、LiV NiO4、LiV CoO4And the like; wherein a and b are both positive numbers. The lithium iron oxide may be LiFeO2、LiFePO4And so on.
In this embodiment, the thickness of the conductive layer 11 does not exceed a first threshold; the thickness of the ion conducting layer 13 does not exceed a second threshold; the thickness of the positive electrode material layer 12 does not exceed a third threshold value; wherein the sum of the first threshold, the second threshold and the third threshold does not exceed 5 mm, so that the flexible battery has flexible characteristics, i.e. has a bending characteristic. Specifically, the thickness of the first conductive layer 111 and the second conductive layer 112 may be 5 micrometers (μm); the thickness of the first conductive layer 111 and the second conductive layer 112 may be 100 micrometers, i.e. the thickness of the first conductive layer 111 and the second conductive layer 112 ranges from 5 micrometers to 105 micrometers. The thickness of the positive electrode material layer 12 may be 5 micrometers; the thickness of the positive electrode material layer 12 can float up to 100 micrometers, that is, the thickness of the positive electrode material layer 12 ranges from 5 micrometers to 105 micrometers. The thickness of the ion conductive layer 13 may be 2 micrometers, and the thickness of the ion conductive layer 13 may be 100 micrometers, that is, the thickness of the positive electrode material layer 12 ranges from 2 micrometers to 102 micrometers.
In the embodiment of the present invention, the positive electrode material layer 12 covers the first surface of the first conductive layer 111; the ion conducting layer 13 covers the first surface of the positive electrode material layer 12; the second conductive layer 112 covers a first surface of the ion conductive layer 13; it can be understood that the second conductive layer 112, the ion conductive layer 13, the positive electrode material layer 12 and the first conductive layer 111 are stacked to form the flexible battery of the present embodiment. The second conductive layer 112, the ion conductive layer 13, the positive electrode material layer 12 and the first conductive layer 111 in the flexible battery can be laminated and manufactured by adopting a first treatment process. The first process may be a thin film fabrication process of a Micro-Electro-mechanical system (MEMS); the MEMS film preparation process specifically comprises the following steps: a vacuum film preparation process, a thermal oxidation preparation process, an aqueous solution film deposition process or a physical deposition process; the vacuum thin film preparation process may be a Physical Vapor Deposition (PVD) process and a Chemical Vapor Deposition (CVD) process. The first treatment process in this embodiment may be any treatment process in the prior art, and is not described in detail in this embodiment of the present invention.
By adopting the technical scheme of the flexible battery provided by the embodiment of the invention, the thickness of each material layer in the flexible battery does not exceed the corresponding threshold value, so that the total thickness of the flexible battery meets the requirement of the flexible battery on having the flexibility characteristic, and the flexibility of the battery is realized.
Example two
The embodiment of the invention also provides the flexible battery. Fig. 2 is a schematic structural diagram of a flexible battery according to a second embodiment of the present invention; as shown in fig. 2, the flexible battery includes: an electrically conductive layer 11, an ion conductive layer 13, and a positive electrode material layer 12; the conductive layer 11 includes a first conductive layer 111 and a second conductive layer 112; wherein,
the positive electrode material layer 12 covers a first surface of the first conductive layer 111; the ion conducting layer 13 covers the first surface of the positive electrode material layer 12; the second conductive layer 112 covers a first surface of the ion conductive layer 13; wherein the thicknesses of the electrically conductive layer 11, the ion conductive layer 13 and the positive electrode material layer 12 do not exceed a first threshold value, a second threshold value and a third threshold value, respectively, so that the flexible battery has flexibility;
the flexible battery further includes a lead region including a first lead region 141 and a second lead region 142; the first lead pad 141 is in contact with a second surface of the first conductive layer 111; the second lead pad 142 is in contact with the first surface of the second conductive layer 112.
In this embodiment, the conductive layer 11 includes a first conductive layer 111 and a second conductive layer 112; the conducting layer 11 is used for collecting current so as to form larger current output; based on this, the first conductive layer 111 and the second conductive layer 112 included in the conductive layer 11 are respectively disposed outside the flexible battery; when the flexible battery is placed as shown in fig. 1, the first conductive layer 111 and the second conductive layer 112 are disposed at the topmost end and the bottommost end of the flexible battery, respectively. Specifically, the material of the conductive layer 11 is a metal material. Since the conductive layer 11 functions to collect current so as to form a larger current output, the resistivity of the metal material used for the conductive layer 11 is smaller, so as to avoid unnecessary energy loss. Preferably, the resistivity of the metal material used for the conductive layer 11 is not greater than the resistivity of aluminum metal at normal temperature, that is, the metal material used for the conductive layer 11 includes: gold, copper, aluminum, and the like, but are not limited to the above-described metal materials.
Based on the first conductive layer 111 and the second conductive layer 112, the flexible battery in this embodiment is further provided with a lead area for conveniently leading out the current collected by the conductive layer 11. Further, the first lead pad 142 and the second lead pad 142 can be respectively connected to a power supply device through wires, that is, a flexible battery is implemented to supply power to the power supply device.
In this embodiment, the ion conducting layer 13 includes a solid electrolyte therein; the solid electrolyte comprises conductive ions and non-conductive ions; the non-conductive ions in the ion conducting layer 13 form a rigid skeleton, and there are more than conductive ions in the interior of the rigid skeleton, and these positions are connected with each other to form a one-dimensional tunnel type, two-dimensional planar type or three-dimensional conductive type ion diffusion channel, in which the conductive ions can move freely. Specifically, the solid electrolyte includes a lithium-containing metal oxide; the lithium-containing metal oxide includes: LiPOxNy(ii) a Wherein x and y are both positive numbers; it is understood that it contains on average 1 lithium (Li), one phosphorus (P), x oxygen (O) and y nitrogen (N) per molecule. Preferably, the lithium-containing metal oxide is lithium nitrogen-containing phosphate (LiPON). Of course, the solid electrolyte in the ion conductive layer 13 is not limited to LiPOxNyThe substance to be characterized may also be one of the sulfide-based solid electrolytes, such as LiaGePbSc(ii) a Wherein a, b and c are all positive numbers. The LiaGePbScSuch as Li10GeP2S12。
In this embodiment, the positive electrode material layer 12 includes a positive electrode material; the positive electrode material is specifically an oxygen-containing lithium salt of a metal. During charging, lithium ions are extracted from the crystal lattice of the anode material and inserted into the crystal lattice of the cathode material after passing through the solid electrolyte, so that the cathode is rich in lithium and the anode is poor in lithium; during discharging, lithium ions are extracted from the crystal lattice of the negative electrode material and inserted into the crystal lattice of the positive electrode material after passing through the solid electrolyte, so that the positive electrode is rich in lithium and the negative electrode is poor in lithium. Thus, the difference between the potentials of the positive and negative electrode materials relative to the metallic lithium during the insertion and extraction of lithium ions forms the operating voltage of the flexible battery of the embodiment.
Specifically, the oxygen-containing lithium salt of the metal comprises one of the following substances: lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, manganese nickel cobalt composite oxide, lithium vanadium oxide, lithium iron oxide. Wherein the lithium cobalt oxide can be lithium cobaltate (LiCoO)2). The lithium nickel oxide may be lithium nickelate (LiNiO) specifically2). The lithium manganese oxide may be LiMnxOy(ii) a Wherein x and y are both positive numbers; the LiMnxOySpecifically, it may be LiMnO2And/or LiMn2O4. The manganese-nickel-cobalt composite oxide can be combined with LiCoO2、LiNiO2、LiMnO2Three layered materials. The lithium vanadium oxide may be LiVxOy(ii) a Wherein x and y are both positive numbers; the LiVxOySpecifically LiVO2、LiaV2O4、LibV3O8And LiV2O4、LiV NiO4、LiV CoO4And the like; wherein a and b are both positive numbers. The lithium iron oxide may be LiFeO2、LiFePO4And so on.
In this embodiment, the thickness of the conductive layer 11 does not exceed a first threshold; the thickness of the ion conducting layer 13 does not exceed a second threshold; the thickness of the positive electrode material layer 12 does not exceed a third threshold value; wherein the sum of the first threshold, the second threshold and the third threshold does not exceed 5 mm, so that the flexible battery has flexible characteristics, i.e. has a bending characteristic. Specifically, the thickness of the first conductive layer 111 and the second conductive layer 112 may be 5 micrometers (μm); the thickness of the first conductive layer 111 and the second conductive layer 112 may be 100 micrometers, i.e. the thickness of the first conductive layer 111 and the second conductive layer 112 ranges from 5 micrometers to 105 micrometers. The thickness of the positive electrode material layer 12 may be 5 micrometers; the thickness of the positive electrode material layer 12 can float up to 100 micrometers, that is, the thickness of the positive electrode material layer 12 ranges from 5 micrometers to 105 micrometers. The thickness of the ion conductive layer 13 may be 2 micrometers, and the thickness of the ion conductive layer 13 may be 100 micrometers, that is, the thickness of the positive electrode material layer 12 ranges from 2 micrometers to 102 micrometers.
In the embodiment of the present invention, the positive electrode material layer 12 covers the first surface of the first conductive layer 111; the ion conducting layer 13 covers the first surface of the positive electrode material layer 12; the second conductive layer 112 covers a first surface of the ion conductive layer 13; it can be understood that the second conductive layer 112, the ion conductive layer 13, the positive electrode material layer 12 and the first conductive layer 111 are stacked to form the flexible battery of the present embodiment. The second conductive layer 112, the ion conductive layer 13, the positive electrode material layer 12 and the first conductive layer 111 in the flexible battery can be laminated and manufactured by adopting a first treatment process. The first treatment process may be a thin film preparation process of the MEMS; the MEMS film preparation process specifically comprises the following steps: a vacuum film preparation process, a thermal oxidation preparation process, an aqueous solution film deposition process or a physical deposition process; the vacuum thin film preparation process may be a Physical Vapor Deposition (PVD) process and a Chemical Vapor Deposition (CVD) process, among others. The first treatment process in this embodiment may be any treatment process in the prior art, and is not described in detail in this embodiment of the present invention.
By adopting the technical scheme of the flexible battery provided by the embodiment of the invention, the thickness of each material layer in the flexible battery does not exceed the corresponding threshold value, so that the total thickness of the flexible battery meets the requirement of the flexible battery on having the flexibility characteristic, and the flexibility of the battery is realized.
EXAMPLE III
Based on the flexible batteries provided in the first embodiment and the second embodiment, the embodiment of the invention also provides a flexible battery pack. Fig. 3 is a schematic structural diagram of a flexible battery pack according to a third embodiment of the present invention; as shown in fig. 3, the flexible battery pack includes at least two flexible batteries 10; the at least two flexible batteries 10 are stacked such that, of two adjacent flexible batteries, a first surface of a first flexible battery and a second surface of a second flexible battery are adjacent; the at least two flexible batteries 10 are connected in series; in this embodiment, any one of the flexible batteries in the flexible battery pack may be based on the flexible battery shown in embodiment one or embodiment two; specifically, as shown in fig. 1 or fig. 2, the flexible battery 10 includes: an electrically conductive layer 11, an ion conductive layer 13, and a positive electrode material layer 12; the conductive layer 11 includes a first conductive layer 111 and a second conductive layer 112; wherein,
the positive electrode material layer 12 covers a first surface of the first conductive layer 111; the ion conducting layer 13 covers the first surface of the positive electrode material layer 12; the second conductive layer 112 covers a first surface of the ion conductive layer 13; wherein the thicknesses of the electrically conductive layer 11, the ion conductive layer 13 and the positive electrode material layer 12 do not exceed a first threshold value, a second threshold value and a third threshold value, respectively, so that the flexible battery has flexibility;
the flexible battery further includes a lead region including a first lead region 141 and a second lead region 142; the first lead pad 141 is in contact with a second surface of the first conductive layer 111; the second lead pad 142 is in contact with the first surface of the second conductive layer 112.
In this embodiment, the conductive layer 11 includes a first conductive layer 111 and a second conductive layer 112; the conducting layer 11 is used for collecting current so as to form larger current output; based on this, the first conductive layer 111 and the second conductive layer 112 included in the conductive layer 11 are respectively disposed outside the flexible battery; when the flexible battery is placed as shown in fig. 1, the first conductive layer 111 and the second conductive layer 112 are disposed at the topmost end and the bottommost end of the flexible battery, respectively. Specifically, the material of the conductive layer 11 is a metal material. Since the conductive layer 11 functions to collect current so as to form a larger current output, the resistivity of the metal material used for the conductive layer 11 is smaller, so as to avoid unnecessary energy loss. Preferably, the resistivity of the metal material used for the conductive layer 11 is not greater than the resistivity of aluminum metal at normal temperature, that is, the metal material used for the conductive layer 11 includes: gold, copper, aluminum, and the like, but are not limited to the above-described metal materials.
Based on the first conductive layer 111 and the second conductive layer 112, the flexible battery in this embodiment is further provided with a lead area for conveniently leading out the current collected by the conductive layer 11. Further, the first lead pad 142 and the second lead pad 142 can be respectively connected to a power supply device through wires, that is, a flexible battery is implemented to supply power to the power supply device.
The lead pads of two adjacent flexible batteries in the flexible battery pack described in this embodiment are in contact, so that at least two flexible batteries in the flexible battery pack are connected in series. The lead area of any flexible battery in the flexible battery pack is connected with one lead; two lead regions in contact in adjacent two flexible batteries may be connected to one lead. Specifically, as shown in fig. 3, the first lead region of the first flexible battery is connected to the lead 1, the second lead region of the second flexible battery is connected to the lead 5, and the contact lead regions of the two adjacent flexible batteries are respectively connected to the lead 2, the lead 3, and the lead 4. In the flexible battery pack according to this embodiment, different output voltages can be obtained through any two leads, so that power can be supplied to devices with different operating voltages.
In this embodiment, the ion conducting layer 13 includes a solid electrolyte therein; the solid electrolyte comprises conductive ions and non-conductive ions; the non-conductive ions in the ion conducting layer 13 form a rigid skeleton, and there are more than conductive ions in the interior of the rigid skeleton, and these positions are connected with each other to form a one-dimensional tunnel type, two-dimensional planar type or three-dimensional conductive type ion diffusion channel, in which the conductive ions can move freely. Specifically, the solid electrolyte includes a lithium-containing metal oxide; the lithium-containing metal oxide includes: LiPOxNy(ii) a Wherein x and y are both positive numbers; it is understood that it contains on average 1 lithium (Li), one phosphorus (P), x oxygen (O) and y nitrogen (N) per molecule. Preferably, the lithium-containing metal oxide is lithium nitrogen-containing phosphate (LiPON). Of course, the separationThe solid electrolyte in the sub-conducting layer 13 is not limited to LiPOxNyThe substance to be characterized may also be one of the sulfide-based solid electrolytes, such as LiaGePbSc(ii) a Wherein a, b and c are all positive numbers. The LiaGePbScSuch as Li10GeP2S12。
In this embodiment, the positive electrode material layer 12 includes a positive electrode material; the positive electrode material is specifically an oxygen-containing lithium salt of a metal. During charging, lithium ions are extracted from the crystal lattice of the anode material and inserted into the crystal lattice of the cathode material after passing through the solid electrolyte, so that the cathode is rich in lithium and the anode is poor in lithium; during discharging, lithium ions are extracted from the crystal lattice of the negative electrode material and inserted into the crystal lattice of the positive electrode material after passing through the solid electrolyte, so that the positive electrode is rich in lithium and the negative electrode is poor in lithium. Thus, the difference between the potentials of the positive and negative electrode materials relative to the metallic lithium during the insertion and extraction of lithium ions forms the operating voltage of the flexible battery of the embodiment.
Specifically, the oxygen-containing lithium salt of the metal comprises one of the following substances: lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, manganese nickel cobalt composite oxide, lithium vanadium oxide, lithium iron oxide. Wherein the lithium cobalt oxide can be lithium cobaltate (LiCoO)2). The lithium nickel oxide may be lithium nickelate (LiNiO) specifically2). The lithium manganese oxide may be LiMnxOy(ii) a Wherein x and y are both positive numbers; the LiMnxOySpecifically, it may be LiMnO2And/or LiMn2O4. The manganese-nickel-cobalt composite oxide can be combined with LiCoO2、LiNiO2、LiMnO2Three layered materials. The lithium vanadium oxide may be LiVxOy(ii) a Wherein x and y are both positive numbers; the LiVxOySpecifically LiVO2、LiaV2O4、LibV3O8And LiV2O4、LiV NiO4、LiV CoO4And the like; wherein a and b are both positive numbers. The lithium iron oxide may be LiFeO2、LiFePO4And so on.
In this embodiment, the thickness of the conductive layer 11 does not exceed a first threshold; the thickness of the ion conducting layer 13 does not exceed a second threshold; the thickness of the positive electrode material layer 12 does not exceed a third threshold value; wherein the sum of the first threshold, the second threshold and the third threshold does not exceed 5 mm, so that the flexible battery has flexible characteristics, i.e. has a bending characteristic. Specifically, the thickness of the first conductive layer 111 and the second conductive layer 112 may be 5 micrometers (μm); the thickness of the first conductive layer 111 and the second conductive layer 112 may be 100 micrometers, i.e. the thickness of the first conductive layer 111 and the second conductive layer 112 ranges from 5 micrometers to 105 micrometers. The thickness of the positive electrode material layer 12 may be 5 micrometers; the thickness of the positive electrode material layer 12 can float up to 100 micrometers, that is, the thickness of the positive electrode material layer 12 ranges from 5 micrometers to 105 micrometers. The thickness of the ion conductive layer 13 may be 2 micrometers, and the thickness of the ion conductive layer 13 may be 100 micrometers, that is, the thickness of the positive electrode material layer 12 ranges from 2 micrometers to 102 micrometers.
In the embodiment of the present invention, the positive electrode material layer 12 covers the first surface of the first conductive layer 111; the ion conducting layer 13 covers the first surface of the positive electrode material layer 12; the second conductive layer 112 covers a first surface of the ion conductive layer 13; it can be understood that the second conductive layer 112, the ion conductive layer 13, the positive electrode material layer 12 and the first conductive layer 111 are stacked to form the flexible battery of the present embodiment. The second conductive layer 112, the ion conductive layer 13, the positive electrode material layer 12 and the first conductive layer 111 in the flexible battery can be laminated and manufactured by adopting a first treatment process. The first treatment process may be a thin film preparation process of the MEMS; the MEMS film preparation process specifically comprises the following steps: a vacuum film preparation process, a thermal oxidation preparation process, an aqueous solution film deposition process or a physical deposition process; the vacuum thin film preparation process may be a Physical Vapor Deposition (PVD) process and a Chemical Vapor Deposition (CVD) process, among others. The first treatment process in this embodiment may be any treatment process in the prior art, and is not described in detail in this embodiment of the present invention.
By adopting the technical scheme of the flexible battery provided by the embodiment of the invention, the thickness of each material layer in the flexible battery does not exceed the corresponding threshold value, so that the total thickness of the flexible battery meets the requirement of the flexible battery on having the flexibility characteristic, and the flexibility of the battery is realized. On the other hand, by adopting the technical scheme of the flexible battery pack provided by the embodiment of the invention, the output of a plurality of different output voltages is realized, so that the power supply for equipment with different working voltages is realized.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and in actual implementation, there may be other ways of dividing the apparatus, for example, some features may be omitted. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A flexible battery, comprising: a conductive layer, an ion conductive layer, and a positive electrode material layer; the conductive layer comprises a first conductive layer and a second conductive layer; wherein,
the positive electrode material layer covers the first surface of the first conducting layer; the ion conducting layer covers the first surface of the positive electrode material layer; the second conductive layer covers the first surface of the ion conductive layer;
wherein the thicknesses of the electrically conductive layer, the ion conductive layer, and the positive electrode material layer do not exceed a first threshold, a second threshold, and a third threshold, respectively, such that the flexible battery has flexibility.
2. The flexible battery of claim 1, wherein the material of the conductive layer is a metallic material.
3. The flexible battery of claim 1, wherein the material of the ion conducting layer comprises a lithium-containing metal oxide; the lithium-containing metal oxide includes: LiPOxNy(ii) a Wherein x and y are both positive numbers.
4. The flexible battery of claim 1, wherein the material of the positive electrode material layer comprises an oxygen-containing lithium salt of a metal; the oxygen-containing lithium salt of the metal comprises one of the following substances: lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, manganese nickel cobalt composite oxide, lithium vanadium oxide, lithium iron oxide.
5. The flexible battery of claim 1, further comprising a lead pad, the lead comprising a first lead pad and a second lead pad; the first lead pad is in contact with a second surface of the first conductive layer; the second lead pad is in contact with a first surface of the second conductive layer.
6. The flexible battery of claim 5, wherein the material of the lead region is a metallic material.
7. A flexible battery pack comprising at least two flexible batteries; the at least two flexible batteries are stacked such that a first surface of a first flexible battery and a second surface of a second flexible battery are adjacent in two adjacent flexible batteries; the at least two flexible batteries are connected in series;
wherein the flexible battery includes: a conductive layer, an ion conductive layer, and a positive electrode material layer; the conductive layer comprises a first conductive layer and a second conductive layer; wherein,
the positive electrode material layer covers the first surface of the first conducting layer; the ion conducting layer covers the first surface of the positive electrode material layer; the second conductive layer covers the first surface of the ion conductive layer;
wherein the thicknesses of the electrically conductive layer, the ion conductive layer, and the positive electrode material layer do not exceed a first threshold, a second threshold, and a third threshold, respectively, such that the flexible battery has flexibility.
8. The flexible battery of claim 7, wherein the material of the ion conducting layer comprises a lithium-containing metal oxide; the lithium-containing metal oxide includes: LiPOxNy(ii) a Wherein x and y are both positive numbers.
9. The flexible battery according to claim 7, wherein the material of the positive electrode material layer comprises an oxygen-containing lithium salt of a metal; the oxygen-containing lithium salt of the metal comprises one of the following substances: lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, manganese nickel cobalt composite oxide, lithium vanadium oxide, lithium iron oxide.
10. The flexible battery pack of claim 7, wherein the flexible battery further comprises a lead pad comprising a first lead pad and a second silver lead pad; the first lead pad is in contact with a second surface of the first conductive layer; the second lead pad is in contact with a first surface of the second conductive layer.
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Application publication date: 20161221 |