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Fault Anticipation
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Latching (bi-stable) relays have the great advantage to maintain their contact position indefinitely without any power being sent to the coil. They save a lot of energy compared to standard contactors that can consume up to 0.4 A to maintain their contacts closed (10 Ah per day / 300 Ah per month). But they need to be commanded by pulses…
Temperature and SOC are important parameter that influences the aging of a lithium battery. I summarize some research results and draw guidelines to better manage our lithium cells (LiFePo4) for a longer life.
When power is first applied to a capacitive load (like inverters and chargers), a large inrush current is induced. This current creates an arc between the relay contacts… that are severely damaged. For that reason capacitive loads need to be pre-charged with a controlled current. TAO BMS can do that for you as a standard feature… What is the risk…
When installing a lithium battery on a boat or a camping car you need to decide if and how the alternator will charge it at the same time as the starter battery. If not done the right way the alternator could be damaged. In this article I address some key questions you may ask yourself, I point out some challenges…
To get the most out of the BMS and protect your electrical installation you need some heavy duty relays. They open or close the power circuits, can handle high current and are remotely commanded by the BMS. In this article I look at the two main categories of heavy duty relays: Typical use for heavy duty relays are: Disclaimer: all…
What kind of protection have you designed in your installation to guarantee the safety of your battery, your boat and the crew? I look at it as a cascade of protection levels designed to limit the risk of an incident turning into a major catastrophe.