BMS warming light and buzzer before disconnect

[ben373]

The Australian standards are calling for a warning prior to BMS disconnect.

This is to be a light and loud buzzer so would needed to be a relay output so that the light and buzzer can be remote.

Are there any BMS doing this.

Pantaneous insurance are now requiring this.

See below..

ASNZ Standards for Lithium Batteries
AS/NZS 3004.2 (2014) Lithium Battery requirements:
"2.9.3 Additional requirements for lithium ion batteries
The following additional requirements apply:
(a) Lithium ion batteries shall be installed in locations that ensure the battery manufacturer's specified operating temperature limits cannot be exceeded and are appropriate for the IP rating of the battery and its management system.
(b) Each lithium ion battery shall be provided with a battery management safety system 216.7.15784.291787 (BMS) either integrated into a battery pack or as a separate component located adjacent to the battery. The BMS shall continuously monitor the voltage and temperature of each cell in the battery.
(c) All charging sources shall be automatically disconnected by the BMS when voltage exceeds the manufacturer's recommended maximum.
(d) All connected load shall be automatically disconnected by the BMS when the voltage falls below the manufacturer's recommended minimum.
(e) The battery shall be automatically disconnected by the BMS from all connected load and all charging sources when temperature exceeds the manufacturer's specified maximum.
) The BMS shall provide an audible and visual alarm at the normal vessel operating position before a disconnection event occurs.
(g) Lithium ion battery ventilation air flows shall be in accordance with the manufacturer's requirements. If specific air flow data is not provided the requirements of Clauses 2.9.2.2 or 2.9.2.3 shall be applied. NOTE: Care must be exercised when disabling charging sources to avoid the risk of elevated voltages that may damage the equipment.