Battery pack and heater assembly
A battery pack including adjacent battery modules is provided. Each of the battery modules includes one or more cylindrical batteries; a thermal diffusing plate holding the one or more cylindrical batteries; and a first chamber configured to distribute cooling air to cool each of the one or more cylindrical batteries. The battery pack further includes a second chamber provided between the adjacent battery modules, each of the respective thermal diffusing plates of the adjacent battery modules forming at least part of a wall of the second chamber; and a heater provided in the second chamber, the heater facing the respective thermal diffusing plates of the adjacent battery modules.
1. A battery pack comprising:
adjacent battery modules, each battery module of the adjacent battery modules comprising:
one or more cylindrical batteries;
a thermal diffusing plate holding the one or more cylindrical batteries in each battery module; and
a first chamber configured to distribute cooling air to cool each of the one or more cylindrical batteries in each battery module;
a second chamber provided between the adjacent battery modules, the thermal diffusing plate of each of the adjacent battery modules forming at least part of a wall of the second chamber;
a heater provided in the second chamber, the heater facing the thermal diffusing plate of each of the adjacent battery modules without contacting the thermal diffusing plate of each of the adjacent battery modules that form at least part of the wall of second chamber, so that an air space is disposed between the heater and the thermal diffusing plate of each of the adjacent battery modules; and
a flow passage provided between the adjacent battery modules, wherein the flow passage is configured to introduce the cooling air into the first chamber of each of the adjacent battery modules.
2. The battery pack according to claim 1 , wherein the second chamber comprises a convection zone between the heater and the thermal diffusing plate of each of the adjacent battery modules, the convection zone comprising a convecting substance.
3. The battery pack according to claim 1 , wherein the adjacent battery modules are arranged in such a manner that corresponding surfaces of the thermal diffusing plate of each of the adjacent battery modules are coplanar.
4. The battery pack according to claim 1 , wherein:
each battery module of the adjacent battery modules further comprises:
a bottom cover, at least a part of which is located on a side of the thermal diffusing plate opposite the first chamber; and
a smoke exhaust passage between the thermal diffusing plate and the bottom cover, the smoke exhaust passage being partitioned from the first chamber, and
the adjacent battery modules are arranged in such a manner that each of the respective bottom covers face each other so as to form at least part of the wall of the second chamber.