Smart Battery Management System Connectivity with Cavli C16QS

Case Study Overview

An India-based electric vehicle component provider develops smart battery management systems with Wi-Fi and non-isolated CAN communication. Cavli C16QS adds LTE Cat 1bis cellular connectivity, enabling the connected device to communicate beyond its local interfaces. The customer’s BMS handles battery measurement, charge management, protection and performance, while Cavli supplies the cellular communication capability within the design.

The customer chose Cavli to bring cellular connectivity, eSIM network access and assisted GNSS together in its EV battery management system. Access to local and global operator networks supports its international deployment requirements. Assisted GNSS helps reduce the time needed to acquire an initial location fix, addressing the customer’s positioning requirements alongside LTE communication. Low-power operation at LTE Cat 1 speeds also influenced the choice of C16QS, connecting the customer’s communication needs with its overall device power priorities.

Built on Qualcomm’s QCX216 platform, C16QS supports FreeRTOS and DFOTA, with optional GNSS and integrated eSIM configurations. A GNSS-enabled configuration adds positioning capability to the connected battery-management device. Module selection should account for the deployment region, network coverage, connectivity plan and required hardware interfaces. These considerations help OEMs match cellular connectivity to their BMS architecture. Cavli’s integrated offering brings communication and positioning options into the design, while battery sensing, charging decisions and protection logic remain functions of the customer’s complete system and its application software.