A battery monitoring chip can now look inside battery cells, spotting problems early while helping improve safety, battery life, and system design.
Texas Instruments (TI) has introduced a new battery monitor for electric vehicles and energy storage systems that integrates electrochemical impedance spectroscopy (EIS) directly into the device. The goal is to improve real-time battery health monitoring and detect internal cell issues earlier.
The device monitors up to 26 cells per chip. This reduces the number of monitoring ICs required in a battery pack, which lowers system complexity, cost, and board space needs.
The key addition is the built-in EIS engine. It tracks internal electrical behavior of cells to identify early signs of degradation or faults. This helps improve visibility into battery state of health and supports earlier safety actions inside the system.
In EVs, this improves estimation of state of charge and state of health, which helps reduce range uncertainty and improves charging behavior. In energy storage systems, it supports stable operation in large grid and data center storage setups.
The monitor delivers voltage accuracy under 2 mV across −40°C to +125°C, using higher-resolution conversion and low-noise measurement for better cell-level readings.
It is designed to work with companion battery management devices so engineers can scale across different pack sizes and chemistries with less redesign effort, reducing development time.
It also supports faster EIS measurement cycles and meets automotive functional safety standards, enabling safer battery operation over its lifetime.
“The electrification of transportation and the rapid expansion of energy storage are redefining what battery performance must deliver, and as a leader in battery management technology, TI is uniquely positioned to meet that challenge,” said Wenjia Liu, vice president and general manager, battery management systems (BMS) at TI. “Our high-cell-count battery monitor with a built-in EIS engine helps ‘shine a light’ inside battery cells, delivering rich chemical-state data that enables systems’ software to make informed, real-time decisions on safety and performance of the battery pack, allowing engineers to address the most critical challenges in battery management.”
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