Texas Instruments introduced its new battery cell and battery pack management tools this week at CES 2023. It said that the new battery management system could increase the range of EVs by 20%. It comes down to the new TI components being able to better understand what is happening inside. The information is used to predict accurately its range and performance.
According to the press release, the company says its new automotive battery cell and pack monitors have the most accurate measurement capabilities available on the market. As EVs grow in popularity, advanced battery management systems (BMS) are helping overcome critical barriers to widespread adoption. By focusing on solving complex system design challenges, TI provides the most advanced, comprehensive portfolio of BMS devices, enabling automakers to create a safer, more reliable driving experience and accelerate EV adoption.
TI’s latest battery controls are the BQ79718-Q1 battery cell monitor and the BQ79731-Q1 battery pack monitor. These devices provide an unprecedented level of accuracy and precision in measuring battery voltage, current, and temperature to determine the true range of a vehicle and increase the overall life and safety of the battery pack. “Automakers aim to get the most range possible out of their EVs, and accurate state of charge estimations are vital to achieving this,” said Sam Wong, general manager for BMS at TI. “Our new devices bring substantially higher precision to voltage and current measurement, giving automakers confidence to accurately measure an EV’s true range.”
True Range
As electric vehicles become more popular, the challenge for automakers is to reflect true range while making the vehicle more affordable. This translates into making the battery packs lower cost with higher energy densities. Every single watt-hour stored and retrieved from the cells is critical to extending the driving range, the company says.
The BQ79718-Q1 allows automakers to maximize the true range of their EV with high-performance battery cell voltage measurements down to 1 mV of accuracy, and the BQ79731-Q1 allows measurement of the battery pack current down to 0.05% of accuracy. Such precision provides the clearest way possible to accurately measure the state of charge and state of health at the individual cell and pack level. That in turn allows drivers to have better information about the true range of their cars at any moment in time. Best in the industry voltage and current synchronization enables instantaneous monitoring of battery pack power, which provides a real-time snapshot of battery health. This level of synchronization enables electrochemical impedance spectroscopy, which provides vital insight into the cell core temperature, battery aging, and state of charge of the battery.
