Detection circuit and management device

A management device that manages a power storage module, the power storage module having an abnormality notification switch, the abnormality notification switch being a switch that is inserted into an electric current line between a first high-side reference potential and a low-side reference potential and that is switched on when the power storage module is abnormal but is switched off when the power storage module is normal, the management device comprising:

• a first detection element that outputs a signal indicating an abnormality of the power storage module when detecting that an electric current flows along the electric current line between the first high-side reference potential and the abnormality notification switch, the first detection element being inserted into the electric current line between the first high-side reference potential and the abnormality notification switch;
• and
• a second detection element that outputs a signal indicating an occurrence of a disconnection of the electric current line between a second high-side reference potential and the low-side reference potential when detecting that no electric current flows along an electric current line between the second high-side reference potential and a node at which the first detection element is connected to the abnormality notification switch, the second high-side reference potential having a higher potential than a potential of the first high-side reference potential, the second detection element being inserted into the electric current line between the second high-side reference potential and the node,
• wherein a potential at the node is retained higher than the first high-side reference potential but lower than the second high-side reference potential.