To that end, the battery must at least have a galvanic isolation for all poles to reliably avoid overcharging, overcurrent, overheating or deep discharge. The added expense per storage unit is a maximum of twenty euros.
Meet the redundant safety standards
Also, the battery must be impossible to turn on when individual cells show reduced safety properties. The redundant safety standards must be met by the battery as a whole, but also by individual battery modules. Functional safety in accordance with ISO 26262 has to be demonstrated by the producers by way of a statement on SIL 2 or SIL 3. Installing companies need to pay particular attention to that. (HS)
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