Temperature fuse main content Battery cell temperature fuses, as an important safety protection device, are widely used in battery management systems (BMS) and battery tabs. They can quickly cut off the current in abnormal high-temperature conditions to prevent safety accidents caused by battery overheating. This article will provide a detailed introduction to the working principle, significance and current application status…
Battery cell pressure relief valve main content In the current era of rapid technological development, as the core power source of various electronic devices and new energy vehicles, the safety of batteries is of vital importance. The battery cell pressure relief valve, as a key component to ensure the safe operation of the battery, plays an indispensable role. This article…
Safety and protection device of battery cell main content The safety of lithium batteries for starting motorcycles is of vital importance. Especially as the core component of the battery, the battery cells need to be equipped with various safety and protection devices to ensure their reliability and safety under various working conditions. Among them, the pressure relief valve, temperature fuse…
Soft-pack battery cell: light weight and flexible innovation main content Material properties Soft-pack battery cells are encapsulated in aluminum-plastic film (with a thickness of 80-150μm), and are composed of a nylon layer, an aluminum foil layer and a polypropylene layer. Its weight is 40% lighter than that of steel shell battery cells, and its energy density can reach 300Wh/kg. However,…
Square cell: The king of energy density and integration main content Material innovation The square battery cell adopts an aluminum alloy shell (with a thickness of 0.8-1.2mm), and the internal electrode sheets are made by lamination process. The filling rate of active substances is as high as 98%, and the energy density exceeds 250Wh/kg. Under the lithium iron phosphate (LiFePO₄)…
Cylindrical cell: a model of standardization and high magnification main content Structural characteristics Cylindrical battery cells are packaged in steel or aluminum shells, with diameter specifications mainly concentrated in standardized sizes such as 18650 (18mm×65mm), 21700 (21mm×70mm), and 4680 (46mm×80mm). Its wound electrode sheet design forms a uniform current distribution through the helical stacking of three layers of materials –…