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1.发明公开
公开(公告)号：EP3972029A1
公开(公告)日：2022-03-23
申请号：EP20812799.3
申请日：2020-02-26
发明人： MA, Qiang , QIN, Dejun , DENG, Yaoming , LI, Yangxing , XU, Fan
IPC分类号： H01M10/0567 , H01M10/0569
摘要： Embodiments of the present invention provide a lithium secondary battery electrolyte including a lithium salt, an organic solvent, and a flame retardant, and the flame retardant includes (pentafluoro) cyclotriphosphazene substituted by an electron donating group and (pentafluoro) cyclotriphosphazene substituted by an electron withdrawing group. Both two flame retardants: the (pentafluoro) cyclotriphosphazene substituted by the electron donating group and the (pentafluoro) cyclotriphosphazene substituted by the electron withdrawing group are added to the lithium secondary battery electrolyte, so that a battery has both high safety performance and good electrochemical performance. The embodiments of the present invention further provide a preparation method for the lithium secondary battery electrolyte and a lithium secondary battery including the lithium secondary battery electrolyte.
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2.发明公开
公开(公告)号：EP3719912A1
公开(公告)日：2020-10-07
申请号：EP18887713.8
申请日：2018-12-11
发明人： MA, Qiang , LI, Yangxing , QIN, Dejun
IPC分类号： H01M10/0567 , H01M10/0525
摘要： Embodiments of the present invention provides an electrolyte additive. A molecular structure of the electrolyte additive includes a six-membered ring structure including three nitrogen atoms and three phosphorous atoms; each phosphorous atom includes two substituted groups, and the substituted groups are respectively represented as R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 ; at least one substituted group of R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 is a substituted sulfonic group; and a remaining substituted group is any one selected from fluorine, chlorine, bromine, alkyl, haloalkyl, alkoxy, haloalkoxy, alkeny, haloalkenyl, alkenyloxy, haloalkenyloxy, aryl, haloaryl, aryloxy, haloaryloxy, a substituted phosphate ester group, a substituted imide group, and a substituted sulfonyl imide group. The electrolyte additive has dual characteristics of flame resistance and high-voltage resistance. Applying the electrolyte additive to a lithium secondary battery can effectively improve high-voltage cycle performance and security reliability of the lithium secondary battery. The present invention further provides a lithium secondary battery electrolyte and a lithium secondary battery.
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公开(公告)号：EP4250425A1
公开(公告)日：2023-09-27
申请号：EP21905723.9
申请日：2021-12-15
发明人： MA, Qiang , DENG, Yonghong , ZHANG, Guangzhao , HONG, Xiang
IPC分类号： H01M10/0569 , H01M10/0567
摘要： This application provides a battery electrolytic solution, including an electrolyte salt and a non-aqueous organic solvent. The non-aqueous organic solvent includes a first organic solvent shown in a formula (I) and/or a second organic solvent shown in a formula (II): R 1 -S(=O) x -N(-R 3 )-R 2 formula (I); and R 1 -S(=O) x -N(-R 3 )-S(=O) y -R 4 formula (II). R 1 and R 4 are separately selected from fluoroalkyl, fluoroalkoxy, fluoroalkenyl, fluoroalkenyloxy, fluoroaryl, or fluoroaryloxy. R 2 and R 3 are separately selected from alkyl, alkoxy, alkenyl, alkenyloxy, aryl, or aryloxy. x is 1 or 2, and y is 1 or 2. A total content in mass of the first organic solvent and/or the second organic solvent in the electrolytic solution ranges from 10% to 90%. The electrolytic solution includes the first organic solvent and/or the second organic solvent of a high content in mass, so that side reactions between the electrolytic solution and the negative electrode can be reduced, thereby improving coulombic efficiency and cycling performance of the battery.
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公开(公告)号：EP4387251A1
公开(公告)日：2024-06-19
申请号：EP22866391.0
申请日：2022-08-22
发明人： LU, Yan , MA, Qiang , SUN, Pengfei , ZHA, Yufeng
IPC分类号： H04N23/60
CPC分类号： H04N23/71 , H04N23/75 , H04N17/002 , H04N23/69
摘要： This application provides an exposure control method, an apparatus, and an electronic device. For a camera module with a variable aperture, a luminance level of a shooting environment is determined based on a current f-number, an exposure time corresponding to a current frame of image, a luminance value of the current frame of image, a gain corresponding to the current frame of image, a calibration value of photosensitivity of the camera module, and a corresponding image luminance value when the photosensitivity of the camera module is calibrated. A target luminance value is determined based on the luminance level of the shooting environment. Then the luminance value of the current frame of image is converged toward the target luminance value. According to the method, when the aperture is changed, luminance of an image seen by a user is always stable, thereby improving visual experience of the user.
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公开(公告)号：EP4287334A1
公开(公告)日：2023-12-06
申请号：EP22758923.1
申请日：2022-02-24
发明人： MA, Qiang , WU, Haobin , XU, Yifei , HONG, Xiang
IPC分类号： H01M10/056 , H01M10/0525
摘要： Embodiments of this application provide a solid-state electrolyte. The solid-state electrolyte includes a porous coordination polymer having an unsaturated metal site, an anionic group coordinated with and grafted on the unsaturated metal site, and a cation bound with the anionic group. The anionic group includes one or more substituted carboxylate anionic groups and/or one or more substituted sulfonate anionic groups. The cation includes one or more of a lithium ion, a sodium ion, a potassium ion, a magnesium ion, a zinc ion, and an aluminum ion. The solid-state electrolyte presents a conduction characteristic of a single cation, so that concentration polarization in a battery system can be effectively avoided and growth of a metal negative electrode dendrite can be suppressed, thereby improving electrochemical performance and safety performance of a battery. Embodiments of this application further provide a preparation method of the solid-state electrolyte and a secondary battery including the solid-state electrolyte.
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公开(公告)号：EP3993100A1
公开(公告)日：2022-05-04
申请号：EP20839898.2
申请日：2020-07-10
发明人： MA, Qiang , WU, Haobin , LI, Zhengjie , XU, Yifei , HONG, Xiang , WANG, Pinghua
IPC分类号： H01M4/134
摘要： Disclosed is a metal anode, including a metal anode body (10) and a protective layer (11) formed on one or two side surfaces of the metal anode body (10). The protective layer (11) includes a coordination polymer having an unsaturated metal site or a complexation product formed by complexation between the coordination polymer having the unsaturated metal site and anions of battery electrolyte salt. The coordination polymer uses zirconium, aluminum, or iron as a center and uses R-X n as an organic ligand, R is n-valent hydrocarbyl, substituted hydrocarbyl, or hydrocarboxy, n is an integer in a range of 1 to 4, X is an oxygen-containing functional group capable of forming metal-oxygen chemical bond with the metal anode body (10), and the metal-oxygen chemical bond is formed between metal atoms on a surface of the metal anode body (10) and oxygen atoms in the X group. The protective layer (11) on the surface of the metal anode can effectively inhibit dendrite growth, reduce occurrences of side reactions, and alleviate impact caused by volume expansion of the metal anode in a cycle process. A method for preparing a metal anode and a secondary battery are further provided.
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