Conductive coating, also known as pre-coating, in the lithium battery industry generally refers to a conductive coating applied to the surface of the positive electrode current collector-aluminum foil. Aluminum foil coated with this conductive coating is called pre-coated aluminum foil or simply coated aluminum foil. Conductive coatings in lithium batteries effectively improve electrode adhesion, reduce the amount of binder used, and significantly improve battery electrical performance. Its earliest experiments in batteries can be traced back to the 1970s, and it has flourished with the development of the new energy industry, especially lithium iron phosphate batteries, becoming a highly sought-after new technology or material.
Battery system design must provide two layers of electronic protection against overcharging, over-discharging, and overcurrent. If the battery explodes after removing the protection board, it indicates a design flaw. While this method provides two layers of protection, consumers often buy non-original chargers after their own chargers break down. Charger manufacturers, for cost reasons, often remove the charging controller to reduce costs. As a result, inferior chargers drive out superior ones, leading to a proliferation of substandard chargers on the market. This removes the first and most important line of defense against overcharge. Overcharging is the most significant factor causing battery explosions; therefore, substandard chargers can be considered the culprit behind battery explosions. Of course, not all battery systems employ the above-described solution. In some cases, the battery pack will have a built-in charging controller.
