Work machine
A work machine includes a battery pack, a first vent provided at a rear end of a machine body, a fan located between the first vent and the battery pack, a second vent located in front of and above the battery pack, and an electric motor rotated by electric power from the battery pack.
1 . A work machine comprising:
a battery pack;
a first vent located at a rear end of a machine body;
a fan located between the first vent and the battery pack;
a second vent located in front of and above the battery pack;
a third vent located at a bottom front end of the machine body and below the battery pack, and
an electric motor rotated by electric power from the battery pack,
wherein the first vent and the second vent are located in a front-rear direction of the work machine with the battery pack in between, and
wherein air flows from the third vent laterally and then upward through an upward flow passage formed on a lateral side of the battery pack such that air flows in an upward direction of the work machine.
2 . The work machine according to claim 1 , further comprising the third vent located in front of the battery pack and below the second vent.
3 . The work machine according to claim 2 , wherein the fan is located above the third vent.
4 . The work machine according to claim 1 wherein at least part of the fan is located above the battery pack.
5 . The work machine according to claim 1 , further comprising a heat exchanger to cool down hydraulic oil pumped by a hydraulic pump driven by the electric motor,
wherein the heat exchanger is between the battery pack and the fan, and
the fan exhausts air inside the machine body to the outside.
6 . The work machine according to claim 5 further comprising a fourth vent located on a side wall of the machine body adjacent to the fan and in front of the fan.
7 . The work machine according to claim 5 further comprising a hydraulic oil tank located below the heat exchanger to store the hydraulic oil.
8 . The work machine according to claim 7 further comprising an electrical equipment located above the electric motor that is coupled to the hydraulic pump,
wherein the hydraulic oil tank has a recess that in a lower portion of a side adjacent to the hydraulic pump, and the hydraulic pump is located inside the recess of the hydraulic oil tank.
9 . The work machine according to claim 1 , wherein a plurality of battery packs are spaced apart from each other in a front-rear direction.
10 . A work machine comprising:
a battery pack;
a first vent located at a back of a hood that defines a part of an engine room accommodating the battery pack;
a fan located between the first vent and the battery pack; and
a third vent connected to the engine room located in front of the hood and lower than the first vent, wherein the first vent and the third vent are located in a front-rear direction of the work machine with the battery pack in between, and
wherein air flows from the third vent laterally and then upward through an upward flow passage formed on a lateral side of the battery pack such that air flows in an upward direction of the work machine.
11 . The work machine according to claim 10 , wherein an air flow that flows from the third vent to the engine room is caused to flow below a floor extending forward from a front lower edge of the hood.