Residual voltage controller and electric compressor including the same

A residual voltage controller, comprising:

• a high voltage connector having an interlock;
• an inverter part configured to receive power from the high voltage connector;
• a motor part electrically connected to the inverter part to be controlled;
• and
• voltage controllers connected between the high voltage connector and the inverter part in each different direction to interrupt a residual voltage of the motor part when detachment of the high voltage connector is performed before a normal stop signal,
• wherein the voltage controllers comprise:
• a first voltage controller connected in series between the high voltage connector and the inverter part;
• and
• a second voltage controller connected in parallel between the high voltage connector and the inverter part,
• wherein the second voltage controller comprises:
• a first switch configured to allow an electric coupling state to change over when detachment of the high voltage connector is performed;
• a switching element electrically connected to the first switch;
• and
• a resistance part electrically connected to the switching element, and configured to consume a voltage as heat generation is performed by an applied voltage when the first switch is changed over to an on-state.

An electric compressor, comprising:

• a housing;
• a motor part provided in the housing;
• a compression part configured to be driven by the motor part;
• an inverter part coupled to one side of the housing and configured to control operations of the motor part;
• a high voltage connector having an interlock;
• and
• voltage controllers connected between the high voltage connector and the inverter part in each different direction to interrupt a residual voltage of the motor part when detachment of the high voltage connector is performed before a normal stop signal,
• wherein the voltage controllers comprise:
• a first voltage controller connected in series between the high voltage connector and the inverter part;
• and
• a second voltage controller connected in parallel between the high voltage connector and the inverter part,
• wherein the first voltage controller comprises:
• a first switching element configured to interrupt a residual voltage in a direction from the inverter part to the high voltage connector;
• and
• a second switching element disposed in a direction opposite to the first switching element and electrically connected to the first switching element.

An electric compressor, comprising:

• a housing;
• a motor part provided in the housing;
• a compression part configured to be driven by the motor part;
• an inverter part coupled to one side of the housing and configured to control operations of the motor part;
• a high voltage connector having an interlock;
• and
• voltage controllers connected between the high voltage connector and the inverter part in each different direction to interrupt a residual voltage of the motor part when detachment of the high voltage connector is performed before a normal stop signal,
• wherein the voltage controllers comprise:
• a first voltage controller connected in series between the high voltage connector and the inverter part;
• and
• a second voltage controller connected in parallel between the high voltage connector and the inverter part,
• wherein the second voltage controller comprises:
• a first switch configured to allow an electric coupling state to change over when detachment of the high voltage connector is performed;
• a switching element electrically connected to the first switch;
• and
• a resistance part electrically connected to the switching element, and configured to consume a voltage as heat generation is performed by an applied voltage when the first switch is changed over to an on-state.