Patents by Inventor Suli LI
Suli LI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12374755Abstract: The present application provides a non-woven fabric separation membrane and a preparation method and a use thereof. The non-woven fabric separation membrane of the present application includes a plurality of fibers, and the fibers are closely connected to each other through a modifier, which significantly improves the tensile strength and the puncture strength of the separation membrane. Meanwhile, molecules of the modifier are grafted on surfaces of the fibers, which improves wettability for an electrolyte solution to the separation membrane, thereby improving the ionic conductivity of the separation membrane and the rate performance of a battery. Ti metal or Zr metal in the modifier molecule can effectively attract an electrolyte anion in the electrolyte solution to improve the ion migration number of the electrolyte solution, reduce battery polarization, and improve the rate performance of the battery.Type: GrantFiled: February 1, 2022Date of Patent: July 29, 2025Assignee: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Wei Zhao, Suli Li, Weichao Tang, Hao Yuan, Junyi Li, Yanming Xu
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Patent number: 12347829Abstract: Disclosed is a battery. The battery includes a positive electrode plate, a negative electrode plate, a non-aqueous electrolyte solution, and a separator. An electrolyte additive includes fluoroethylene carbonate. A termination tape of the positive electrode plate is disposed at a paste coating tail of the positive electrode plate. An area of a termination tape of the positive electrode plate is A cm2, a content of fluoroethylene carbonate is B2 wt %; and a width of the positive electrode plate is C cm; wherein a ratio of A to B2 is in a range of 0.5-5 and a ratio of A to Cis in a range of 1 to 3. The termination tape includes a substrate and a (meth)acrylic acid termination adhesive layer coated on a surface of the substrate. The battery can effectively improve high-temperature performance.Type: GrantFiled: December 29, 2023Date of Patent: July 1, 2025Assignee: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Yingdi Mu, Hai Wang, Suli Li
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Patent number: 12341188Abstract: The present application provides a silicon-based negative electrode material and a preparation method and use thereof. The silicon-based negative electrode material has a lithium borate coating layer on its surface, which may improve first charge-discharge efficiency of the material. There is a strong chemical bond interaction between the lithium borate coating layer and the borate ester having a specific structure, which may improve the rate capability of the battery. Furthermore, the borate ester has a structure of —(CH2CH2O)n—CO—CR0?CH2, and the negative plate prepared with the silicon-based negative electrode material will undergo a cross-linking reaction during a high-temperature baking of the plate, so that a cross-linking is formed among particles of the silicon-based negative electrode material, thereby effectively ensuring the structural integrity of the silicon-based negative electrode plate during recycling, and improving the cycle performance of the battery.Type: GrantFiled: February 2, 2022Date of Patent: June 24, 2025Assignee: Zhuhai CosMX Battery Co., Ltd.Inventors: Wei Zhao, Suli Li, Hao Yuan, Weichao Tang, Junyi Li, Yanming Xu
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Patent number: 12341158Abstract: An electrolyte, a preparation method thereof and a lithium ion battery, where the electrolyte comprises a solvent, a lithium salt, and a first additive shown in Formula 1; in Formula 1, R1 and R3 are each independently selected from a substituted or unsubstituted C1-C20 alkyl group, (—C2H4—O—C2H4—)n or is a direct bond, and 1?n?5; R2 is selected from one of —NH—, —CH2—, —SiH2—, —BH— and —PH—. The electrolyte has simple composition, and can not only enable the lithium ion battery to maintain excellent cycle performance at high voltages, but also effectively inhibit the lithium ion battery from overproducing gas so as to optimize storage performance.Type: GrantFiled: February 21, 2022Date of Patent: June 24, 2025Assignee: Zhuhai CosMX Battery Co., Ltd.Inventors: Bo Liao, Suli Li, Junyi Li, Yanming Xu
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Publication number: 20250202260Abstract: A charging method of a lithium battery includes: after reducing a charging upper limit voltage of the lithium battery according to a buck charging strategy, obtaining first index information during a process that the lithium battery adopts the buck charging strategy; when the first index information meets a first preset condition, shutting down the buck charging strategy of the lithium battery and starting a constant-capacity charging strategy. The constant-capacity charging strategy is a charging strategy based on a constant charging capacity of the lithium battery; and after the lithium battery recovers at least part of a capacity loss through the constant-capacity charging strategy, the constant-capacity charging strategy of the lithium battery is shut down. According to the embodiments of the present disclosure, the endurance capability of the lithium battery may be improved, and the service life of the lithium battery may be prolonged.Type: ApplicationFiled: December 19, 2024Publication date: June 19, 2025Applicant: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Feng WANG, Suli LI, Yanming XU
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Patent number: 12322753Abstract: An electrolytic solution includes an organic solvent, an electrolyte, and an additive. The additive includes a first compound represented by Formula 1, where R1 is selected from one of a single bond, substituted or unsubstituted alkoxy, C1-C6 alkylene, and C2-C6 alkenyl; R2 and R3 each are independently selected from one of substituted or unsubstituted alkoxy, C1-C6 alkylene, and C2-C6 alkenyl; and R4 is B or P. Since the first compound includes an N-containing group that may be combined with a protonic acid in the electrolytic solution, the electrolytic solution have good stability; moreover, the cycle performance of a lithium secondary battery is improved.Type: GrantFiled: February 2, 2022Date of Patent: June 3, 2025Assignee: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Bo Liao, Suli Li, Hai Wang, Yanming Xu, Junyi Li
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Publication number: 20250140937Abstract: A battery includes: a housing having a cavity; a battery cell arranged in the cavity, the battery cell including a positive electrode plate, a negative electrode plate, and a separator; and an electrolyte solution filled in the battery cell including fluoroethylene carbonate. A width of the separator is greater than that of the positive and the negative electrode plate. The battery satisfies following relationship: C?B/20A+1, where a content of fluoroethylene carbonate in the electrolyte solution is C %, A represents a distance between an edge of the separator and that of an electrode plate on the same side, and B represents a height of the cavity. When the foregoing relationship is satisfied, deterioration of performance of the battery cell caused by insufficient electrolyte solution may be alleviated, thereby improving a value of a self-discharge coefficient k and cycling performance of the battery.Type: ApplicationFiled: December 27, 2024Publication date: May 1, 2025Applicant: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Yaming QIU, Hai WANG, Suli LI, Junyi LI
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Publication number: 20250132331Abstract: The present application provides a positive electrode active material, a positive electrode sheet and a lithium-ion battery. When the battery, which is formed by the positive electrode active material and a lithium metal negative electrode, is discharged to a discharge cut-off voltage of 3.0 V at a rate of less than 1 C after being charged to a SOC of 100% at a rate of less than 1 C with a charge cut-off voltage of 4.55 V to 4.65 V, the number N of discharge peaks in the capacity-voltage differential curve of the battery is not less than 4. Under high-voltage condition, the positive electrode active material not only has excellent specific capacity and cycling performance, but also has more prominent rate performance.Type: ApplicationFiled: October 18, 2024Publication date: April 24, 2025Inventors: Jiajiang ZENG, Suli LI, Dingguo XIA
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Publication number: 20250125419Abstract: A battery includes a positive electrode plate, a negative electrode plate, a separator, and an electrolyte solution which includes a lithium salt, an organic solvent, a first additive, and a second additive. The first additive is selected from a cyclic silane compound containing an unsaturated bond, and the second additive is selected from at least one of fluorinated cyclic carbonate compounds. The battery satisfies 115?(a+1/5b)/(t×p)?700, where a is a mass percentage of the first additive in a total mass of the electrolyte solution in wt %, b is a mass percentage of the second additive in the total mass of the electrolyte solution in wt %, t is a mass of a single-side negative electrode active material layer per unit area in g/cm2, and p is a specific surface area of the negative electrode active material in m2/g.Type: ApplicationFiled: December 26, 2024Publication date: April 17, 2025Applicant: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Hai WANG, Suli LI
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Publication number: 20250105282Abstract: Disclosed are a positive electrode material, a preparation method of a positive electrode material, a positive electrode plate, and a battery. The positive electrode material includes a sodium-containing oxide, an angle range of a first characteristic peak of the sodium-containing oxide is less than an angle range of a second characteristic peak, the first characteristic peak is a characteristic peak of the sodium-containing oxide at an initial voltage, the second characteristic peak is a characteristic peak of the sodium-containing oxide at a cut-off voltage, and a chemical formula of the sodium-containing oxide is LixNa1-xCo1-z MzO2. M includes a metal element or a non-metal element, 0.7<x<1, and 0.001<z<0.03.Type: ApplicationFiled: December 9, 2024Publication date: March 27, 2025Applicant: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Heli LIU, Jiajiang ZENG, Suli LI
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Publication number: 20250087685Abstract: Disclosed are a positive electrode material, and a positive electrode plate and a battery including the positive electrode material. The positive electrode material provided by the present disclosure is good in structural stability, and a battery formed by the positive electrode material has excellent cycling performance. According to the positive electrode material provided by the present disclosure, through a type and a doping amount of a doped A element, on one hand, a morphology of the positive electrode material is directionally controlled, and a press density of the positive electrode material is improved, so that an energy density of a positive plate is improved; on the other hand, an oxygen stability in the positive electrode material is improved by an A-O bond formed by the doped element A and oxygen atoms in a crystal, so that the positive electrode material has relatively high gram volume and voltage platform.Type: ApplicationFiled: October 22, 2024Publication date: March 13, 2025Applicant: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Kongqiang YE, Jiajiang ZENG, Suli LI, Heli LIU
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Publication number: 20250070159Abstract: The present application provides a positive electrode active material and its use, where the positive electrode active material includes a lithium metal oxide as shown in Formula 1 or Formula 2; in an X-ray diffraction spectrum, the lithium metal oxide has a Cmca space group of a cubic lattice structure, and has a 002 peak with a 2? of 17.9°-18.1°, and a 131 peak with a 2? of 67.0°-67.5°. The positive electrode active material of the present application is beneficial to improving the cycle performance and specific capacity of lithium-ion batteries.Type: ApplicationFiled: November 14, 2024Publication date: February 27, 2025Inventors: Jiajiang ZENG, Dingguo XIA, Suli LI
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Publication number: 20250070269Abstract: Disclosed is a battery, including: a housing having a cavity; a battery cell arranged in the cavity, the battery cell includes a positive electrode plate, a negative electrode plate, and a separator; and an electrolyte solution filled in the battery cell including fluoroethylene carbonate. A width of the separator is greater than that of the positive and the negative electrode plate. The battery satisfies following relationship: C?B/20A+1, where a content of fluoroethylene carbonate in the electrolyte solution is C %, A represents a distance between an edge of the separator and that of an electrode plate on the same side, and B represents a height of the cavity. When the foregoing relationship is satisfied, deterioration of performance of the battery cell caused by insufficient electrolyte solution may be alleviated, thereby improving a value of a self-discharge coefficient k and cycling performance of the battery.Type: ApplicationFiled: November 13, 2024Publication date: February 27, 2025Applicant: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Yaming QIU, Hai WANG, Suli LI, Junyi LI
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Publication number: 20250070157Abstract: A positive electrode active material and the use thereof where the positive electrode active material includes a lithium metal oxide and a lithium-rich material. In an X-ray diffraction pattern, the lithium metal oxide is a space group Cmca of a cubic crystal system, and has a 002 peak at 2? of 17.9°-18.1° and a 131 peak at 2? of 67.0°-67.5°. The lithium-rich material is selected from at least one of Li2NiO2, Li6FeO6, Li2MoO3, Li6CoO4, Li2CuO2, Li2O, Li3N, LiF, LisAlO4, Li5FeO4, and Li2C2O4. The positive electrode active material helps to improve the specific capacity and cycle performance of batteries.Type: ApplicationFiled: November 12, 2024Publication date: February 27, 2025Inventors: Jiajiang ZENG, Dingguo XIA, Suli LI
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Patent number: 12237460Abstract: The present application provides a composite material and a preparation method thereof, and a lithium ion battery, and belongs to the technical field of lithium batteries. A specific solution is as follows: the composite material is an oxide electrolyte coated nano-attapulgite composite material, where a coating layer of an oxide electrolyte has a thickness less than or equal to 20 ?m, a rod crystal of a nano-attapulgite has a length of 100 nm-50 ?m and a width of 10 nm-120 nm, and the nano-attapulgite is an organically modified natural nano-attapulgite and/or a lithium cation exchanged natural nano-attapulgite. The attapulgite composite material coated with the oxide electrolyte has a rod-shaped fast lithium ion transmission channel at a nanometer level, which can improve a transmission of lithium ions and has good lithium ion conductivity and excellent mechanical properties.Type: GrantFiled: August 2, 2021Date of Patent: February 25, 2025Assignee: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Weichao Tang, Suli Li, Wei Zhao, Hao Yuan, Junyi Li, Yanming Xu, Pengjian Zuo
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Publication number: 20250055291Abstract: A temperature-controllable human body charging apparatus includes a thermally conductive temperature control unit and a charging unit, where the temperature control unit includes a phase change material, and the temperature control unit is configured to absorb heat released by the charging unit. The charging apparatus can effectively reduce or inhibit the risk of burning organ and tissue in the human body caused by the temperature rise phenomenon of the charging apparatus.Type: ApplicationFiled: October 30, 2024Publication date: February 13, 2025Inventors: Suli LI, Wei Zhao, Derui Dong
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Publication number: 20250046953Abstract: Disclosed are a separator and a battery including the same. An adhesive layer of the separator includes a composite material with a fibrous core-shell structure. In the composite material with a fibrous core-shell structure, the nitrogen-containing phosphate compound is encapsulated in a vinylidene fluoride polymer. When the battery is used at room temperature, the encapsulation structure is stable, the nitrogen-containing phosphate compound is encapsulated in the vinylidene fluoride polymer and stably exists in the separator, without affecting the electrical performance of the battery. In addition, the fibrous vinylidene fluoride polymer can perform excellent at bonding, and tightly bonds the separator to the positive electrode plate and negative electrode plate together, ensuring that the battery does not deform during the cycle. The battery can effectively improve the safety performance while taking into account performance of the battery at high and low temperatures.Type: ApplicationFiled: October 16, 2024Publication date: February 6, 2025Applicant: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Yingdi MU, Xiaodong CAO, Hai WANG, Suli LI
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Publication number: 20250046813Abstract: Disclosed are a positive electrode material, and a positive electrode plate and a battery including the positive electrode material. The positive electrode material has a special phase structure distinct from that of a conventional lithium cobalt oxide material. The positive electrode material may present a plurality of small charging and discharging platforms in a charging and discharging process. Compared with a conventional high-voltage lithium cobalt oxide material, the positive electrode material exhibits the following advantage in terms of electrochemical performance: under a condition that a charge-discharge cut-off voltage and a charge and discharge rate remain the same, the positive electrode material has higher gram capacity performance and cycling performance. Specifically, compared with an undoped compound that belongs to a P63mc space group and has an O2 phase packed structure, the compound has higher gram capacity and better cycling performance due to an effect of element potassium.Type: ApplicationFiled: October 21, 2024Publication date: February 6, 2025Applicant: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Jiajiang ZENG, Dingguo XIA, Suli LI
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Publication number: 20250038268Abstract: Disclosed are an electrolyte solution and a battery. The electrolyte solution in the present disclosure includes an organic solvent, a lithium salt, an additive A, an additive B, and an additive C, where the additive A is carbon-linked disulfonate; the additive B is a polycyano nitrile compound; and the additive C is a bis(fluorosulfonyl)imide salt. The electrolyte solution can improve high-temperature performance of the battery, involves a simple process and low costs, and achieves a good protection effect.Type: ApplicationFiled: September 29, 2024Publication date: January 30, 2025Applicant: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Hai WANG, Suli LI
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Publication number: 20250038358Abstract: Disclosed are a battery separator and a battery. The battery separator includes a substrate, a first coating layer and a second coating layer, and the first coating layer and the second coating layer are arranged opposite to one another on two sides of the substrate; the first coating layer includes first polymer particles and inorganic particles; and the second coating layer includes second polymer particles; Dv10 of the first polymer particles is denoted as A, and Dv50 of the first polymer particles is denoted as B; Dv90 of the inorganic particles is denoted as C; and 0.2?A/C?5; and 1?B/C?40. The battery separator of the present disclosure adheres well to an electrode plate in a battery cell, giving the battery cell excellent low-temperature dynamic performance. Meanwhile, the battery containing the battery has excellent safety performance and cycling performance.Type: ApplicationFiled: October 11, 2024Publication date: January 30, 2025Applicant: ZHUHAI COSMX BATTERY CO., LTD.Inventors: Xiaodong CAO, Fei HE, Suli LI, Junyi LI