Review of heat management systems for high voltage accumulator in electric vehicles and its perspectives

Przegląd systemów zarządzania ciepłem akumulatorów wysokiego napięcia w pojazdach elektrycznych i ich perspektywy
Krzysztof Dolecki, Jakub Kapuściński, Roman Domański

    Streszczenie
    Thermal management of high voltage accumulators used for electric mobility is a complex topic, due to many
    limiting factors like size, weight, cost of development and implementation, and safety. Advancements in technology created
    cheaper cells, that can store more energy and have higher power density, which enabled manufacturers to build many new
    electric vehicles. However, accumulator in EVs is still the most expensive part of electric powertrain and cells are very sensitive
    to operating conditions. Temperatures outside of their specific range can cause quicker loss of their capacity, lower power
    performance or even cause thermal runaway events that are almost inextinguishable - that’s why proper thermal management
    receives a lot of attention. This paper discloses important aspects of accumulators, that have to be considered during thermal
    design, reviews every current solution, their advantages and disadvantages, with examples of EVs that use them. Current trends
    and possible changes in near future are then disclosed, to create good knowledge base about current situation and trends on the
    market to make early phase of conceptual work easier.
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