Fleet > Monitoring – Resilient E-bus Ecosystem

1. Fleet

2. Depot

3. Charging Infrastructure

4. Operating Environment

Monitoring

Continuous real-time monitoring of battery and vehicle health is critical for ensuring safe and reliable operation of e-buses and for preventing failures such as thermal events and system malfunctions. Effective implementation requires targeted mitigation actions by relevant stakeholder, as outlined in the following table for enforcement and compliance.

QnA

Q1. What is the RECOMMENDED frequency for real-time battery monitoring through the Battery Management System (BMS)?

Once every minute Once every 30 seconds Every 5–10 seconds Only during charging

Q2. A battery temperature threshold is breached during enroute operations, triggering system alerts. Which action BEST aligns with recommended monitoring and alert protocols?

Alert only the depot manager after trip completion Display critical alerts on the driver's dashboard and transmit data to depot and central command centres Store alert data locally for post-incident review Disable alerts to avoid driver distraction

Q3. A real-time monitoring system flags an overheating alert requiring urgent attention. How should this alert be categorised under defined response levels?

Level 3 – Scheduled Assistance Level 2 – Same-Day Response Level 1 – Immediate Alert Informational alert only

Q4. A public bus transport agencies plans to integrate monitoring data into a long-term fleet safety strategy.

Which practice BEST supports lifecycle safety and risk management?

Maintaining manual logbooks only Implementing an asset management system with secure software updates Updating systems without OEM involvement Limiting monitoring to battery SoC

S.No.

Activities

Responsibility

Enable Real time monitoring through BMS

Monitor Battery Health

Centralise Monitoring Data

Trigger Automated Alerts on driver’s dashboard

Manage Thermal Systems

Strengthen BMS Capability

Act on Early Warnings

Define Response Levels

Implement Asset Management

10.

Update System Securely

The following section outlines the recommended practices for Battery Management System (BMS) enabled monitoring, alert mechanisms and response protocols to enable early detection of anomalies, timely intervention, and effective risk mitigation across depot and central command operations.

Enable Real time monitoring through BMS: Real time monitoring at a frequency of 5-10 second is advised to be conducted to track key parameters indicated by the Battery Management System (BMS) and promptly detect any anomalies in the battery system.

Monitor Battery Health: BMS monitoring enables tracking of temperatures, state of charge and other battery health indicators. Regular observations and analysis of these parameters by the public bus transport agencies operations and technical team and

Centralise Monitoring Data: The real time monitoring data is recommended to be sent to both at depot level control centre and central command centre.

Trigger Automated Alerts on driver’s dashboard: Alerts are advised to be automatically triggered when thresholds are breached and are communicated to relevant teams, with critical alerts displayed on the driver’s dashboard.

Manage Thermal Systems: Thermal management system attempts to manage the functioning of cooling/heating systems, temperature levels of various sub-systems to keep the battery and other systems at safe temperatures and to avoid thermal runaway reactions that can cause fires.

Strengthen BMS Capability: Strengthen BMS to have exhaustive capabilities for real time temperature & voltage monitoring, cell imbalance detection, battery current and SoH & SoC tracking besides those normally provided.

Act on Early Warnings: Take necessary corrective action on early warning triggers identified through telematics, BMS, thermal sensors, vibration sensor and other tell-tale signs, etc.

Define Response Levels: The Operators Command & Control Centre and depot operations team are advised to continuously monitor for any emergency alerts indicating potential damage or faults in e-buses. Based on the severity of the alert, response actions may be categorized as follows:

Level 1 – Immediate Alert: Requires urgent attention; maintenance personnel, normally from Depot Workshop System (DWS) are to visit the site immediately to inspect and rectify the fault preferably on site.

Level 2 – Same-Day Response: The issues be addressed within the same day through inspection and necessary repairs, normally at DWS.

Level 3 – Scheduled Assistance: Non-critical issues be attended to within 2–3 days for inspection and corrective action, either at DWS or CWS (Central Workshop System) basis nature of failure and the corrective action.

Implement Asset Management: The operations/ technical team needs to implement an asset management system for regular monitoring and optimisation of the entire lifecycle and performance of the assets, including battery health amongst others as an integral component of the overall safety and risk management framework.

Update System Securely: In case of technological advancements, regularly update software and hardware with manufacturer support to prevent data breaches that could compromise telematics and lead to data theft or misuse.