4results about How to "Meet fast charging needs" patented technology

The present application relates to a new type of negative electrode material for lithium ion batteries, and particularly relates to a boron-doped porous carbon gas-phase silicon-carbon composite negative electrode material and a preparation method thereof. The boron-doped porous carbon gas-phase silicon-carbon composite negative electrode material is prepared by mixing a resin with a template agent, doping a boron source, adding a spheroidizing agent and an initiator for spheroidization polymerization, removing impurities and drying, and then performing gas-phase etching to form pores. Silicon is deposited in the pores of the porous carbon and a carbon layer is deposited on the surface of the silicon-carbon precursor by twice chemical vapor deposition, so as to obtain the boron-doped porous carbon gas-phase silicon-carbon composite negative electrode material. The boron element is doped to optimize the electronic conductivity, the spheroidized porous carbon structure is improved to improve the lithium ion transmission channel and enhance the substrate stiffness, and the material has excellent performance of high rate, low expansion and long cycle, so as to solve the problems of insufficient rate performance, low substrate strength and blocked lithium ion transmission of the existing gas-phase silicon-carbon composite negative electrode material in the prior art.

The utility model discloses a battery assembly, and relates to the technical field of battery design. The battery assembly comprises a protection plate, at least one adapter plate, at least one first battery cell and at least one second battery cell, the first battery cell and the second battery cell are arranged at an interval, and a tab of the first battery cell is electrically connected with a first connection area of the protection plate. The adapter plate is provided with a first plug-in terminal and a second plug-in terminal which are arranged at an interval, a tab of the second battery cell is matched with the first plug-in terminal in a plug-in manner and is electrically connected with the first plug-in terminal, a third plug-in terminal is arranged in the second connecting area of the protection plate, and the third plug-in terminal is matched with the second plug-in terminal in a plug-in manner and is electrically connected with the second plug-in terminal. And the tab of the second battery cell is electrically connected with the protection plate through the adapter plate. According to the scheme, the problem that the through-current capability of the adapter plate of the current battery assembly is relatively weak can be solved.

The application relates to a preparation method of an artificially modified CEI material, and the preparation steps comprise the following steps: mixing polymer monomers, a crosslinking agent, an organic plasticizer, a lithium salt, a photoinitiator and a diluent to obtain a precursor solution; performing spin coating on the surface of a high-nickel ternary positive electrode, standing to make the precursor solution fully wet, using a purple light lamp to initiate polymerization, and performing vacuum drying to obtain a high-nickel ternary positive electrode with an artificially modified CEI layer. The artificially modified CEI material is prepared by in-situ polymerization reaction of polyethylene glycol diacrylate and a fluorine-substituted product of ethylene carbonate, is used for a lithium metal battery positive electrode, can effectively stabilize the electrode / electrolyte interface, inhibit electrolyte decomposition and transition metal dissolution, reduce the occurrence of side reactions, and improves the cycle stability of the lithium metal battery.

The utility model discloses a charging clamp for a secondary battery, and belongs to the technical field of battery charging equipment. The clamp comprises a positioning seat, a clamp assembly and a clamp base. A positioning groove is formed in the positioning seat, and the battery monomers are arranged in the positioning groove, so that accurate positioning is realized; the clamp assembly comprises a first clamp assembly and a second clamp assembly which are symmetrically arranged on the two sides of the positioning seat and are matched with each other to stably clamp the single battery from the two sides and charge the single battery; the positioning seat and the clamp assembly are both installed on the clamp base, and the clamp base provides support for the whole structure. According to the charging clamp, accurate positioning of the single battery is achieved through the positioning grooves, the battery is reliably clamped and charged through the first clamp assembly and the second clamp assembly which are symmetrical on the two sides, and the stability and high efficiency of the charging process of the secondary battery can be effectively guaranteed through overall supporting of the clamp base; therefore, the defects of a traditional battery charging clamp in the aspects of charging stability, battery protection, charging efficiency and the like are overcome.