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Battery fuel meters measure how much charge is left in a secondary battery and how long it can continue to provide power (under certain operating conditions). The battery resets the full-charge flag with each full charge, while the coulomb counter counts the energy consumed during discharge.
A battery fuel gauge can be used in a number of different ways. The most common method is to use the battery voltage to calculate the remaining capacity. This approach has the advantages of being simple to apply and very inexpensive.
The Global Battery Fuel Gauge Market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2026, registering a CAGR of XX% from 2024 to 2030.
The new battery fuel gauge, protective analogue front-end (AFE) chip, and secondary protection device from Texas Instruments provide portable designers with lower component count and cost while increasing efficiency and protection. The bq2084 Smart Battery Specification compatible gas gauge from TI keeps track of the amount of charge left in lithium-ion batteries.
Over a system-management bus interface, the device checks capacity and reports the data to the system host controller. To extend the system’s operating life, the host controller, such as a digital signal processor (DSP), handles the remaining battery power.
Maxim produces battery fuel gauge ICs based on patented Model Gauge technology that deliver SOC accuracy, battery runtime, time to market, and comprehensive safety/security in a small solution size. For most lithium batteries and applications, Maxim’s MAX17055 7uA one-cell fuel gauge uses an algorithm that eliminates battery characterization and provides tolerance against battery variation.
