3results about How to "Avoid flatulence" patented technology

This utility model discloses a sealing head structure and a battery, relating to the field of battery manufacturing technology. Specifically, it includes a heat-sealing head, a heat-insulating layer, and a cold-sealing head. The heat-insulating layer is connected to one side wall of the heat-sealing head; the cold-sealing head is connected to the side wall of the heat-insulating layer away from the heat-sealing head. The heat-insulating layer blocks heat transfer between the heat-sealing head and the cold-sealing head. This application uses a heat-insulating layer between the heat-sealing head and the cold-sealing head to block heat transfer, enabling the cold-sealing head to effectively cool and protect against the spread of heat radiation, thus protecting the inner layer of the aluminum-plastic film from damage. This significantly reduces process defects caused by heat radiation and avoids cell gas expansion caused by the inability to expel gas in time. It effectively improves the formation interface, avoids defects such as black spots or lithium plating during the formation process, and is beneficial for improving battery electrical and safety performance while reducing production costs.

The application relates to a pre-lithiation reagent and a preparation method, a lithium ion battery negative electrode and a preparation method, and a lithium ion battery, and belongs to the technical field of lithium ion batteries, and comprises the following steps: dispersing a lithium-silicon alloy, ammonium hexafluorozirconate and a hydrophobic polymer in a non-polar solvent, and performing in-situ reaction at 60-180 DEG C; then performing vacuum filtration on the system after reaction; and drying the solid-phase product obtained through the vacuum filtration to obtain the pre-lithiation reagent. The pre-lithiation reagent prepared by the application realizes fiberization of a main binder under stirring together with an active substance, a conductive agent and a double-binder system, and a high-load self-supporting thin film material prepared through dry rolling is used as a negative electrode sheet, precise and uniform compensation of active lithium is realized under the condition of no organic solvent, the prepared negative electrode sheet has excellent chemical stability in a room-temperature high-humidity environment, and has an outstanding industrial application prospect.

The application discloses a kind of processes for manufacturing sodium-ion battery soft package battery cell to prevent gas swelling;Belongs to sodium-ion battery manufacturing process;Its process includes: (1) the treatment of positive and negative electrodes;After slurry preparation and coating, the positive and negative electrode sheets are obtained, and then baked in a vacuum heating oven, then rolled, die cut, and the electrode sheet is baked after slicing;(2) welding and packaging: the positive and negative electrode sheets are stacked and welded with tabs to form a bare battery cell, and the bare battery cell is packaged in an aluminum-plastic film;The packaged battery cell is baked after being pasted with a bar code, vacuum injection, edge sealing, battery formation, pumping, and the battery cell is stored after being separated and stored;The battery cell is tightly assembled before storage to obtain a sodium-ion battery soft package battery cell;All processes before packaging are carried out in a dew point room.The sodium-ion battery soft package battery cell manufacturing process can better prevent the battery cell from swelling and improve the service life of the battery cell.