1. A battery pack (100) comprising:
a casing (101) having an interior space;
a plurality of battery cells (120) disposed inside the interior space of the
5 casing (101) and spaced apart from each other;
a filler material (140) disposed in a space between the plurality of battery
cells (120); and
at least one fluid passage (130) formed inside the interior space of the
casing (101) and surrounding at least one portion of each of the plurality
10 of battery cells (120), the at least one fluid passage (130) being adapted
to receive a dielectric fluid (200) for regulating the temperature of the
plurality of battery cells (120).
2. The battery pack (100) as claimed in claim 1, wherein the at least one
15 portion surrounded by the at least one fluid passage (130) being an
upper portion (120a) or a lower portion (120b) of each of the plurality of
battery cells (120),
3. The battery pack (100) as claimed in claim 2, wherein at least one of the
20 upper portion (120a) and the lower portion (120b) of the plurality of
battery cells (120) comprises a terminal.
13
4. The battery pack (100) as claimed in claim 1, wherein the filler material
(140) is configured to seal the space surrounding longitudinal sides (124)
of the plurality of battery cells (120).
5 5. The battery pack (100) as claimed in claim 1, wherein the filler material
(140) being a lightweight and fire-retardant material.
6. The battery pack (100) as claimed in claim 5, wherein the filler material
(140) being foam