charging and discharging device

Abstract

To supply power of a battery to an electric heating type catalyst and an external device at all operation points at the same time.SOLUTION: A charge and discharge device comprises a bidirectional charger and a control device. The bidirectional charger includes: an AC / DC converter that convers AC power from an external power supply into DC power; a DC / DC converter that converts the DC power from the AC / DC converter into power adopted to the battery; an output terminal that is electrically connected with a power line of the DC / DC converter; and a switch that is provided between the power line and the output terminal. In the output terminal, an electric heating type catalyst is electrically connected. The control device makes the switch intermittently operate in the case where a request voltage of the electric heating type catalyst is lower than an output voltage corresponded to a power supply available range of the external device when the power of the battery is supplied to the electric heating type catalyst and the external device at the same time.SELECTED DRAWING: Figure 4

Claims

1. A bidirectional charger that converts power supplied from an external power source connected to an inlet into DC power suitable for a battery that stores power, and then converts the DC power from the battery into AC power and supplies it to an external device connected to an outlet. A control device for controlling the aforementioned bidirectional charger, A charging and discharging device equipped with, The aforementioned bidirectional charger, An AC / DC converter that converts AC power from the inlet into DC power, A DC / DC converter that converts the DC power from the AC / DC converter into a predetermined voltage and supplies it to the battery, The DC / DC converter includes an output terminal that is electrically connected to a power line connected to the input / output terminal on the AC / DC converter side, It has a switch provided between the power line and the output terminal, An electrically heated catalyst is electrically connected to the output terminal. The DC / DC converter converts the DC power from the battery into a predetermined output voltage and outputs it to the output terminal and the AC / DC converter. The AC / DC converter converts the DC power from the DC / DC converter into AC power and outputs it to the outlet. When the control device simultaneously supplies power from the battery to the electric heating catalyst and the external device, it causes the switch to operate intermittently if the voltage required by the electric heating catalyst is lower than the output voltage corresponding to the power supply range of the external device. A charging and discharging device characterized by the following features.

2. The control device controls the switch to operate intermittently while maintaining the output voltage within the power supply range. The charging and discharging device according to feature 1.

3. The control device controls the timing of the intermittent operation of the switch during the period when the switch is turned on, so that the electric heating catalyst does not exceed the amount of power it can tolerate in the short term, and so that it can supply the power required by the electric heating catalyst. The charging and discharging device according to feature 2.

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