CN110265732A - A kind of constant temperature regulation lithium battery manufacture craft and lithium battery - Google Patents
A kind of constant temperature regulation lithium battery manufacture craft and lithium battery Download PDFInfo
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- CN110265732A CN110265732A CN201910561105.7A CN201910561105A CN110265732A CN 110265732 A CN110265732 A CN 110265732A CN 201910561105 A CN201910561105 A CN 201910561105A CN 110265732 A CN110265732 A CN 110265732A
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- lithium battery
- constant temperature
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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
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a kind of constant temperature regulation lithium battery manufacture craft and lithium batteries, including preparation with the positive positive plate of coating and the negative electrode tab of cathode coating；The first diaphragm, negative electrode tab, the second diaphragm and positive plate are sequentially overlapped and are integrally wound into cylindric core from outside to inside, to after core vacuum bakeout as be provided with constant temperature regulation interlayer li battery shell in, semi-finished product lithium battery is made；Sealing handles through charge and discharge formation process and obtains lithium battery after injection electrolyte infiltration.The present invention is too long between solving the problems, such as lithium battery when in use to cause superheating phenomenon etc. to influence battery life and it cannot be guaranteed that battery temperature constant state causes battery working efficiency poor, with long service life, regulation is carried out to the temperature of lithium battery and obtains isoperibol, lithium battery is heated evenly, and use is safer.
Description
Technical field
The present invention relates to technical field of lithium batteries, in particular to a kind of constant temperature regulation lithium battery manufacture craft and lithium battery.
Background technique
As the working environment that lithium battery is applicable in needs constantly extension, the operational temperature conditions of lithium battery are required increasingly
It is high.Lithium battery is influenced by material system and structure design, is subject to certain restrictions, is mainly shown as: (1) under use environment
The operating temperature of lithium battery is not above 45 DEG C, and traditional lithium battery uses traditional low boiling point organic solvent, in hot environment
Under side reaction increase, generate bulk gas, cause the bulging of lithium battery to fail；(2) the long-term storage temperature of lithium battery cannot
Higher than 60 DEG C, under hot environment, material can accelerate the loss of lithium ion, lead to the sharply reduction of effective lithium battery capacity, significantly
Shorten working time and the service life of lithium battery.But the temperature characterisitic of lithium battery work determines that its steady operation must increase again
Additional Insulation or implementing process increases work difficulty, and working efficiency is lowly to influence service life.
Summary of the invention
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of constant temperature regulation lithium battery manufacture craft and
Lithium battery, it is too long between solving lithium battery when in use that superheating phenomenon etc. is caused to influence battery life and it cannot be guaranteed that battery constant temperature
State leads to the problem of battery working efficiency difference.
The technical scheme adopted by the invention to achieve the purpose is as follows:
A kind of constant temperature regulation lithium battery manufacture craft comprising following steps:
S1: preparing positive plate and negative electrode tab, and the positive plate includes positive substrate and positive substrate side is being arranged in just
Pole coating, the negative electrode tab include cathode substrate and the cathode coating that cathode substrate side is arranged in；
S2: the first diaphragm, negative electrode tab, the second diaphragm and positive plate are sequentially overlapped from outside to inside and are integrally wound into cylinder
Shape core to core vacuum bakeout and continues air blast, and core is installed in li battery shell of the one end with opening and is made half
Finished product lithium battery is arranged constant temperature on the inside of the open end of li battery shell and regulates and controls interlayer；
S3: electrolyte infiltration is injected into the semi-finished product lithium battery after drying, is sealed, is made later after vacuum pressure maintaining
Lithium battery finished product carries out the processing of charge and discharge formation process to finished battery later；The anode coating is to be received using PECVD vacuum
Rice filming process first nano coating obtained by the formation of positive substrate surface, the cathode coating are to be received using PECVD vacuum
Rice filming process second nano coating obtained by the formation of cathode substrate surface.
Preferably, constant temperature regulation interlayer includes the heat conductive sheet layer connecting with li battery shell and is set to thermally conductive
Polyurethane constant temperature between lamella and li battery shell regulates and controls phase-change accumulation energy filled layer.
Preferably, polyurethane constant temperature regulation phase-change accumulation energy filled layer is using polyethylene glycol soft segment and rigid polyurethane
Polyether polyols made of section block copolymerization.
Preferably, the raw material of the positive coating is by including that the component of following parts by weight is prepared: the silicon hydrosol
100 parts, 50-58 parts of paraffin, 5-6 parts of phosphorus nitrogen environmental protection fire retarding agent, 10-15 parts of polysorbate and 0.2-0.5 parts of propolis, the paraffin
For hexadecane, n-octadecane or n-eicosane, the content of silica accounts for 10-15wt% in the silicon hydrosol.
Preferably, the raw material of the cathode coating is by including that the component of following parts by weight is prepared: being coated with soft
85-95 parts of the synthetic graphite particles of carbon material, 2-4 parts of cathode conductive agent, 3-4 parts of negative electrode binder polyurethane.
Preferably, baking time is 60-75min in the step S2, and baking temperature is 90-100 DEG C.
Preferably, charge and discharge formation process includes that the core of finished product lithium battery is carried out to 60 DEG C of preheatings in the step S3
15min, then precompressed shaping 15min, high temperature is aged after pressure release to 0Kg, is aged 36 hours at 45 DEG C, is protected after ageing
It holds 45 DEG C and pressure is risen into 800Kg, until chemical conversion terminates.
A kind of lithium battery, including core and the li battery shell connecting with core, core is by being sequentially overlapped together
One diaphragm, negative electrode tab, the second diaphragm and positive plate is rolled forms, be equipped with opening in li battery shell one end and through sealing and
Sealing, li battery shell opening inside are equipped with constant temperature and regulate and control interlayer, and it includes connecting with li battery shell that constant temperature, which regulates and controls interlayer,
Heat conductive sheet layer and the polyurethane constant temperature being set between heat conductive sheet layer and li battery shell regulate and control phase-change accumulation energy filled layer.
Preferably, the core is cylindric core, and the positive plate side is equipped with the first PECVD nano coating,
The negative electrode tab side is equipped with the 2nd PECVD nano coating.
Compared with prior art, the beneficial effects of the present invention are: the present invention is too long between solving lithium battery when in use leads
It causes superheating phenomenon etc. to influence battery life and it cannot be guaranteed that battery temperature constant state leads to the problem of battery working efficiency difference, having makes
It is long with the service life, regulation is carried out to the temperature of lithium battery and obtains isoperibol, lithium battery is heated evenly, and constant temperature regulates and controls interlayer phase transformation
The phenomenon that journey is solid-solid phase-change, is not in leakage, use process more conveniently, safely, remove the water inside pole piece or core
Point, low energy consumption, and the active material of the excellent combination property of lithium battery, lithium battery interior increases, and effectively increases the energy of lithium battery
Metric density.
Above-mentioned is the general introduction of inventive technique scheme, below in conjunction with attached drawing and specific embodiment, is done further to the present invention
Explanation.
Detailed description of the invention
Fig. 1 is the core partial structure diagram of the present embodiment；
Fig. 2 is the lithium battery overall structure diagram of the present embodiment.
Specific embodiment:
In order to which the purpose of the present invention and technical solution and advantage is more clearly understood, make with reference to embodiments specifically
It is bright.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Embodiment 1: in conjunction with Fig. 1-2, a kind of constant temperature regulation lithium battery manufacture craft provided in this embodiment comprising as follows
Step:
S1: preparing positive plate and negative electrode tab, and the positive plate includes positive substrate and positive substrate side is being arranged in just
Pole coating, the negative electrode tab include cathode substrate and the cathode coating that cathode substrate side is arranged in；Positive coating is to use
PECVD vacuum nano filming process first nano coating obtained by the formation of positive substrate surface, the cathode coating are to use
PECVD vacuum nano filming process second nano coating obtained by the formation of cathode substrate surface.The raw material of positive coating is by wrapping
The component for including following parts by weight is prepared: 100 parts of the silicon hydrosol, 50 parts of paraffin, 6 parts of phosphorus nitrogen environmental protection fire retarding agent, poly- sorb
10 parts and 0.5 part of propolis of ester, the paraffin is hexadecane, and the content of silica accounts for 10wt% in the silicon hydrosol.It is negative
The raw material of pole coating is by including that the component of following parts by weight is prepared: being coated with the synthetic graphite particles 95 of soft carbon material
Part, 2 parts of cathode conductive agent, 4 parts of negative electrode binder polyurethane.The active material of lithium battery interior increases, and effectively improves lithium
The energy density of battery.It is effectively prevent the total insertion of solvent molecule in charge and discharge process, is avoided because solvent molecule is embedded in pair altogether
It is destroyed caused by electrode material, thus substantially increases the comprehensive performance and service life of battery.
S2: the first diaphragm, negative electrode tab, the second diaphragm and positive plate are sequentially overlapped from outside to inside and are integrally wound into cylinder
Shape core to core vacuum bakeout and continues air blast, baking time 60-75min, and baking temperature is 90-100 DEG C；By core
It is installed in li battery shell of the one end with opening and semi-finished product lithium battery is made, be arranged on the inside of the open end of li battery shell
Constant temperature regulates and controls interlayer；Constant temperature regulation interlayer includes the heat conductive sheet layer connecting with li battery shell and is set to heat conductive sheet layer and lithium
Polyurethane constant temperature between battery case regulates and controls phase-change accumulation energy filled layer；Polyurethane constant temperature regulation phase-change accumulation energy filled layer is to use
Polyether polyols made of polyethylene glycol soft segment and segmented polyurethane block copolymerization.Baking process can remove pole piece or core
Internal moisture, drying temperature and extends that baking time is not high, and to the performance of battery without negative effect, low energy consumption.Pass through setting
Constant temperature regulates and controls interlayer and lithium battery interior and carries out heat exchange, realizes when keeping the temperature to lithium battery, is heated evenly, using more
Safety, optimum Working can be reached when ambient temperature is excessively high and too low.The constant temperature regulate and control interlayer phase transition process be it is solid-
The phenomenon that solid phase becomes, and is not in leakage, use process is more conveniently, safely.
S3: injecting electrolyte into the semi-finished product lithium battery after drying and infiltrate, and without analysis lithium phenomenon on pole piece, guarantees infiltration effect
Fruit is sealed later, and lithium battery finished product is made after vacuum pressure maintaining, is carried out at charge and discharge formation process to finished battery later
Reason；Charge and discharge formation process includes that the core of finished product lithium battery is carried out 60 DEG C of preheating 15min, and then precompressed shaping 15min, lets out
High temperature is aged after being depressed into 0Kg, is aged 36 hours at 45 DEG C, is kept for 45 DEG C after ageing and pressure is risen to 800Kg, until
Chemical conversion terminates.In fluid injection infiltration process, by the vacuum pressure after improving the temperature of semi-finished product battery, increasing fluid injection and prolong
The phenomenon that long dwell time is not in analysis lithium on pole piece, effectively improves the effect of impregnation of electrolyte, improves the non-defective unit of product
Rate and comprehensive performance；Further, by increasing the amount of the electrolyte of injection, so that the active material of lithium battery interior increases,
Effectively improve the energy density of lithium battery.Chemical conversion is the critical process of lithium ion battery production, will be not charged by chemical conversion
Positive and negative pole material, carry out electricizing activation, active material inside activating lithium battery improves the service life of battery.
In conjunction with Fig. 1-2, a kind of lithium battery of the present embodiment, including core 10 and the li battery shell being connect with core 11,
For core by being sequentially overlapped the first diaphragm 1 together, negative electrode tab 2, the second diaphragm 3 and positive plate 4 is rolled forms, core is circle
Column core, the positive plate side are equipped with the first PECVD nano coating 5, and the negative electrode tab side is equipped with the 2nd PECVD
Nano coating 6；Opening is equipped in li battery shell one end and is sealed through sealing, is equipped on the inside of li battery shell opening 7
Constant temperature regulate and control interlayer, constant temperature regulation interlayer include the heat conductive sheet layer 8 connect with li battery shell and be set to heat conductive sheet layer and
Polyurethane constant temperature between li battery shell regulates and controls phase-change accumulation energy filled layer 9.
Embodiment 2: a kind of constant temperature regulation lithium battery manufacture craft provided in this embodiment and lithium battery, with embodiment 1
It is essentially identical, the difference is that: S1 preparation anode and cathode, positive coating are to be existed using PECVD vacuum nano filming process
First nano coating obtained by positive substrate surface is formed, the cathode coating are to be existed using PECVD vacuum nano filming process
Second nano coating obtained by cathode substrate surface is formed.The raw material of positive coating is by including prepared by the component of following parts by weight
It forms: 100 parts of the silicon hydrosol, 58 parts of paraffin, 5 parts of phosphorus nitrogen environmental protection fire retarding agent, 15 parts of polysorbate and 0.2 part of propolis, the stone
Wax is n-octadecane, and the content of silica accounts for 15wt% in the silicon hydrosol.The raw material of cathode coating is by including following heavy
The component of amount number is prepared: being coated with 85 parts of synthetic graphite particles, 4 parts of the cathode conductive agent, cathode bonding of soft carbon material
3 parts of agent polyurethane.
Embodiment 3: a kind of constant temperature regulation lithium battery manufacture craft provided in this embodiment and lithium battery, with embodiment 1
It is essentially identical, the difference is that: positive coating be formed using PECVD vacuum nano filming process in positive substrate surface and
The first nano coating, the cathode coating be using PECVD vacuum nano filming process cathode substrate surface formed and
The second nano coating obtained.The raw material of positive coating is by including that the component of following parts by weight is prepared: the silicon hydrosol 100
Part, 55 parts of paraffin, 5 parts of phosphorus nitrogen environmental protection fire retarding agent, 12 parts of polysorbate and 0.5 part of propolis, the paraffin is n-eicosane, described
The content of silica accounts for 12wt% in the silicon hydrosol.The raw material of cathode coating by include following parts by weight component preparation and
At: it is coated with 90 parts of synthetic graphite particles, 3 parts of the cathode conductive agent, 3 parts of negative electrode binder polyurethane of soft carbon material.
Embodiment 4: a kind of constant temperature regulation lithium battery manufacture craft provided in this embodiment and lithium battery, with embodiment 1
It is essentially identical, the difference is that: positive coating be formed using PECVD vacuum nano filming process in positive substrate surface and
The first nano coating, the cathode coating be using PECVD vacuum nano filming process cathode substrate surface formed and
The second nano coating obtained.The raw material of positive coating is by including that the component of following parts by weight is prepared: the silicon hydrosol 100
Part, 56 parts of paraffin, 6 parts of phosphorus nitrogen environmental protection fire retarding agent, 13 parts of polysorbate and 0.4 part of propolis, the paraffin is hexadecane, described
The content of silica accounts for 14wt% in the silicon hydrosol.The raw material of cathode coating by include following parts by weight component preparation and
At: it is coated with 92 parts of synthetic graphite particles, 2.5 parts of the cathode conductive agent, 3.5 parts of negative electrode binder polyurethane of soft carbon material.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to the one of invention
A little modifications and changes should also be as falling into the scope of the claims of the present invention.
Claims (9)
1. a kind of constant temperature regulates and controls lithium battery manufacture craft, which comprises the steps of:
S1: preparing positive plate and negative electrode tab, and the positive plate includes positive substrate and the anode painting that positive substrate side is arranged in
Layer, the negative electrode tab includes cathode substrate and the cathode coating that cathode substrate side is arranged in；
S2: the first diaphragm, negative electrode tab, the second diaphragm and positive plate are sequentially overlapped from outside to inside and are integrally wound into cylindric volume
Core to core vacuum bakeout and continues air blast, core is installed in li battery shell of the one end with opening, semi-finished product are made
Lithium battery is arranged constant temperature on the inside of the open end of li battery shell and regulates and controls interlayer；
S3: injecting electrolyte infiltration into the semi-finished product lithium battery after drying, sealed later, and lithium electricity is made after vacuum pressure maintaining
Pond finished product carries out the processing of charge and discharge formation process to finished battery later；
The anode coating is first nanometer of painting obtained by the formation of positive substrate surface using PECVD vacuum nano filming process
Layer, the cathode coating are second nanometer of painting obtained by the formation of cathode substrate surface using PECVD vacuum nano filming process
Layer.
2. constant temperature as described in claim 1 regulates and controls lithium battery manufacture craft, which is characterized in that the constant temperature regulates and controls interlayer packet
The polyurethane constant temperature tune for including the heat conductive sheet layer connecting with li battery shell and being set between heat conductive sheet layer and li battery shell
Control phase-change accumulation energy filled layer.
3. constant temperature as claimed in claim 2 regulates and controls lithium battery manufacture craft, which is characterized in that the polyurethane constant temperature regulation
Phase-change accumulation energy filled layer is the polyether polyols made of polyethylene glycol soft segment and segmented polyurethane block copolymerization.
4. constant temperature as described in claim 1 regulates and controls lithium battery manufacture craft, which is characterized in that the raw material of the positive coating
It is prepared by the component for including following parts by weight: 100 parts of the silicon hydrosol, 50-58 parts of paraffin, phosphorus nitrogen environmental protection fire retarding agent 5-6
Part, 10-15 part of polysorbate and 0.2-0.5 parts of propolis, the paraffin is hexadecane, n-octadecane or n-eicosane, described
The content of silica accounts for 10-15wt% in the silicon hydrosol.
5. constant temperature as described in claim 1 regulates and controls lithium battery manufacture craft, which is characterized in that the raw material of the cathode coating
It is prepared by the component for including following parts by weight: being coated with 85-95 parts of synthetic graphite particles, the negative conductive of soft carbon material
2-4 parts of agent, 3-4 parts of negative electrode binder polyurethane.
6. constant temperature as described in claim 1 regulates and controls lithium battery manufacture craft, which is characterized in that baking time in the step S2
For 60-75min, baking temperature is 90-100 DEG C.
7. constant temperature as described in claim 1 regulates and controls lithium battery manufacture craft, which is characterized in that charge and discharge electrification in the step S3
It include that the core of finished product lithium battery is subjected to 60 DEG C of preheating 15min at process, then precompressed shaping 15min, after pressure release to 0Kg
High temperature ageing, is aged 36 hours at 45 DEG C, is kept for 45 DEG C after ageing and pressure is risen to 800Kg, until chemical conversion terminates.
8. a kind of lithium battery, which is characterized in that including core and the li battery shell connecting with core, core is by being sequentially overlapped
The first diaphragm together, negative electrode tab, the second diaphragm and positive plate is rolled forms, are equipped with opening simultaneously in li battery shell one end
Sealed through sealing, constant temperature be equipped on the inside of li battery shell opening and regulates and controls interlayer, constant temperature regulation interlayer include with outside lithium battery
The heat conductive sheet layer of shell connection and the polyurethane constant temperature regulation phase-change accumulation energy being set between heat conductive sheet layer and li battery shell are filled out
Fill layer.
9. lithium battery as claimed in claim 8, which is characterized in that the core is cylindric core, the positive plate
Side is equipped with the first PECVD nano coating, and the negative electrode tab side is equipped with the 2nd PECVD nano coating.
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| CN111009678A (en) * | 2019-12-31 | 2020-04-14 | 广东博龙能源科技有限公司 | Battery manufacturing process for improving battery safety |
| CN112331873A (en) * | 2020-11-11 | 2021-02-05 | 河北零点新能源科技有限公司 | Manufacturing method for improving temperature rise of lithium battery |
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| CN203367370U (en) * | 2013-06-19 | 2013-12-25 | 孟祥辉 | High-safety cylindrical battery |
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| CN112331873A (en) * | 2020-11-11 | 2021-02-05 | 河北零点新能源科技有限公司 | Manufacturing method for improving temperature rise of lithium battery |
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| CN110265732B (en) | 2021-04-27 |
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