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Alliance Intelligent Battery Series
TM
User’s Guide
© 2020 American Battery Solutions Inc. All rights reserved. The data herein is intended as a guide and does not reflect the specification range for any particular property of this
product. Such data is based upon analysis of representative samples and not the actual product shipped. We based the information on data believed to be reliable on the date
compiled, but we do not represent, warrant, or otherwise guarantee, expressly or impliedly, the merchantability, fitness for a particular purpose, freedom from patent
infringement, suitability, accuracy, reliability, or completeness of this information or the products, materials or processes described.
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built into the hardware layer, making for a robust network that can operate reliably in
electrically noisy environments. The Alliance Intelligent Battery Series™ network
interface is compatible with CAN-to-USB adapters that provide galvanic isolation only.
The Vector CAN Case and PCAN have been evaluated by American Battery Solutions
and are known to work. Other CAN-to-USB adapters that provide galvanic isolation
may work, but compatibility cannot be guaranteed. All CAN bus configurations require
60 ohm impedance, accomplished by having a 120 ohm terminations in parallel at each
end of the CAN bus. If the alliance battery is placed at the end of the CAN
communication bus, 120ohm resister is required to be installed across pins 6 and 7 of
the last module physically connected to the CAN bus. Additionally, the termination that
had previously been at the end of the CAN bus needs to be removed from the circuit.
The Alliance Intelligent Battery Series™ is based upon the CAN 2.0A/B protocol. All
messaging from the “pack” (1 – 10 modules in parallel) to the host application and
charger is accomplished using CAN 2.0A protocol (11 bit message identifiers). One
module will speak to the host application and convey limits and status of the “pack.”
All Inter-module communication that conveys information about specific modules
within the pack is accomplished using CAN 2.0B (29 bit message identifiers). Using
this scheme, it is easy for the host application to only pay attention to signals that are
relevant to it and ignore the non-relevant module information. If desired the host can
see the module information and can be decoded from the CAN database file (DBC),
Please contact American Battery Solutions for the DBC file your application.
In addition to the Standard CAN messaging the Alliance Intelligent Battery Series™
also supports a limited number of CANOpen protocols. Please contact American
Battery Solutions for details or custom application software.
CAN Network Configuration
To establish CAN communications between 1 or more Alliance Intelligent Battery
Series™ connect CAN In+/CAN In- to the vehicle host or charger CAN+/CAN- wires.
To connect multiple modules together, connect the CAN Out+/CAN Out- to the
adjacent modules CAN In+/CAN In-, as shown in figure 13. To ensure proper
communication it is important that the CAN bus is appropriately terminated. If the
batteries are at the physical end of the CAN bus, a 120-ohm termination resister needs
to be placed between CAN+ and CAN-. This can be done as shown below, or between
pins 6 and 7 (CAN Out+/CAN Out-). A CAN bus should have 60 ohms of impedance
when properly balanced. American Battery Solutions offers several different options
for connecting multiple batteries. Please contact American Battery Solutions for more
details.