TRAMPA BMS 18S Light Quick Start Manual

Battery Management System BMS 18S Light

1 Features

Supports 3 to 18 cells
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LTC6813 chipset
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Charge-only BMS
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Chemistry: LiIon, LiPo, LiFePo4
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SoC & SoH estimation
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Charge current measurement
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Charge cutoff on cell over temperature
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Charge cutoff on cell over charge
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Over temperature detection BMS
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Cell temperature monitoring (3x NTC)
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Self test routine
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CAN connectivity
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Communication with VESC motor controller
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Buzzer for acoustic warning signals
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VESC Tool desktop and mobile support for
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configuration and monitoring (mobile requires a
wireless module)

2 Applications

General purpose smart BMS for 3 to 18 cells in
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series
For integration into VESC ecosystem
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3 Description

The VESC 18S Light BMS is a charge only battery management
system (BMS) for up to 18 cells in series featuring cell
balancing, charge coupling and decoupling, temperature
monitoring and system health checks. The device is designed to
be integrated into the VESC ecosystem, allowing it to
continuously share information about the battery sate with other
CAN linked devices, so that the battery always will be operated
within pre-defined and acceptable limits. The VESC motor
controllers use the data on the CAN-bus from the BMS for soft
power rampdown when the cells get warm or approach end of
charge, which preserves the cells and avoids hard cutoffs. This
dynamic interaction sets the device apart from less
sophisticated solutions without a transparent communication
structure.
The BMS is backed by VESC Tool, which runs on Linux,
Windows, iOS, MacOS and Android. Features include a wide
range of adjustments for the battery setup and operation as well
as live monitoring and logging capabilities onto a computer or
VESC device like the VESC-Express.

4 Typical installation

The typical installation is shown in the diagram below.
It is necessary to use appropriate fuses on all connections,
matching the discharge current and charge current.
It is highly recommended to use 200mA fuses on all balance
cables, close to each cell! Each battery has to be equipped
with at least one temperature probe (NTC10K 3380K) in the
centre of the battery and with sufficient thermal contact to the
cells.
Rev. 1.0