An automotive lithium-ion battery pack is a device comprising electrochemical cells interconnected in series or parallel that provide energy to the electric vehicle. The battery pack embraces different systems of interrelated subsystems necessary to meet technical and life requirements according to the applications (Warner, 2015).
By containing thermal runaway within an individual cell, our solutions are able to prevent thermal propagation in lithium-ion batteries at module and pack levels. Capabilities provide development teams with an understanding of the fire impact and behaviour ensuring we find the right solution for the application.
However, previous research acknowledges that different vibration tests proposed in standards and regulations for lithium-ion battery packs vary substantially in the levels of energy and frequency range (Kjell and Lang, 2014) so there is still a big challenge to emulate a test that represents the real working condition of electric vehicles.
Another internal protection is PTC. PTC is a thermal fuse which used to prevent the thermal runaways. PTC will shutdown the batteries if the battery temperature is overheated , . circuit and keep the cell in open state. Table 3 shows the comparison between LIB fault, types of abuse and how the fault will be managed.
The battery pack embraces different systems of interrelated subsystems necessary to meet technical and life requirements according to the applications (Warner, 2015). The expand of the technology depends on the cost, safety, cycle life, energy density and power density.
For this reason, the safety of the battery pack is also related to the performance of the mechanical parts. By reducing the weight, the efficiency of the battery can be improved in terms of life cycle and range, at the same time, the battery has to preserve high strength and resistance to vibrations (Shui et al., 2018).
(PDF) System protection for Lithium-ion batteries ...
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