Work machine

A work machine, comprising:

• a motor having a plurality of coils;
• an insulator provided on the motor;
• a circuit board fixed to the insulator;
• an inverter circuit configured to supply current to the plurality of coils;
• and
• a wire-connection circuit connected to the inverter circuit and configured to wire-connect the plurality of coils,
• wherein the wire-connection circuit is configured to enable wire-connection of the plurality of coils to be a delta wire-connection or a star wire-connection, and comprises:
• a first switching element that becomes conductive only in the case where the wire-connection of the plurality of coils is a delta wire-connection;
• a second switching element that becomes conductive only in the case where the wire-connection of the plurality of coils is a star wire-connection;
• and
• a common wire-connection connecting part configured to connect between the plurality of coils and becomes conductive in both the delta wire-connection and the star wire-connection,
• wherein the first switching element and the second switching element are provided on the circuit board, and
• the common wire-connection connecting part comprises a crossover line, which is configured to connect two different coils among the plurality of coils and is supported by the insulator.

A work machine, comprising:

• a motor having a plurality of coils and comprising a stator, and a rotor;
• a substrate fixed to the stator;
• an inverter circuit configured to supply current to the plurality of coils;
• and
• a wire-connection circuit connected to the inverter circuit and configured to wire-connect the plurality of coils,
• wherein the wire-connection circuit comprises:
• a first switching element that becomes conductive only in the case where a wire-connection of the plurality of coils is a first wire-connection;
• a second switching element that becomes conductive only in the case where the wire-connection of the plurality of coils is a second wire-connection;
• and
• a common wire-connection connecting part configured to connect between the plurality of coils and becomes conductive in both the first wire-connection and the second wire-connection,
• wherein among the common wire-connection connecting part, the first switching element, and the second switching element, one is provided on the substrate, and at least one of the other two is provided separately from the substrate.