Cable with plug, control circuit and substrate

A control circuit used with a power supply cable, the power supply cable including:

• a plug connected to a receptacle to which a secondary cell is connected, the plug including a housing and a substrate provided in the housing;
• and
• a cable including a power supply line and a grounding line, the cable having one end connected to the plug and the other end connected to a power supply unit,
• the control circuit comprising:
• a bidirectional switch mounted on a first surface of the substrate provided in the housing of the plug and provided in series in a power supply interconnection connected to the power supply line, the bidirectional switch including two switching devices connected to the power supply interconnection in series, each of the two switching devices including a gate;
• a temperature sensor mounted on the substrate and disposed in the vicinity of a power supply terminal of the plug or a grounding terminal of the plug;
• and
• a control integrated circuit mounted on a second surface opposite to the first surface of the substrate and configured to interrupt the power supply interconnection by turning off the bidirectional switch upon determining that a value related to a temperature detected by the temperature sensor exceeds a predetermined value;
• said control circuit comprising a first interruption signal output configured to supply a separate voltage to the gate of a first one of the two switching devices, and a second interruption signal output configured to supply a separate voltage to the gate of a second one of the two switching devices.

A substrate provided in a housing of a power supply cable, the power supply cable including:

• a plug connected to a receptacle to which a secondary cell is connected;
• and
• a cable including a power supply line and a grounding line, the cable having one end connected to the plug and the other end connected to a power supply unit,
• the substrate comprising:
• a bidirectional switch mounted on a first surface of the substrate and provided in series in a power supply interconnection connected to the power supply line, the bidirectional switch including two switching devices connected to the power supply interconnection in series, each of the two switching devices including a gate;
• a temperature sensor disposed in the vicinity of a power supply terminal of the plug or a grounding terminal of the plug;
• and
• a control circuit mounted on a second surface opposite to the first surface of the substrate and configured to interrupt the power supply interconnection by turning off the bidirectional switch upon determining that a value related to a temperature detected by the temperature sensor exceeds a predetermined value;
• said control circuit comprising a first interruption signal output configured to supply a separate voltage to the gate of a first one of the two switching devices, and a second interruption signal output configured to supply a separate voltage to the gate of a second one of the two switching devices.