Charging device and emergency start method

A charging device, comprising:

• an energy storage module configured to store and provide electrical energy;
• an output interface configured to be electrically coupled to a load;
• a switch module electrically coupled between the energy storage module and the output interface;
• a detection unit configured to detect electrical parameters of the load and the energy storage module;
• a control module electrically coupled to the detection unit and the switch module respectively, wherein when the load is electrically coupled to the output interface, the control module is configured to turn on the switch module based on the electrical parameters of the load and the energy storage module, to switch on an electrical connection between the energy storage module and the output interface;
• and
• a capacitor electrically coupled to the switch module, wherein the capacitor is configured to keep the switch module in an on state steadily when the control module turns on the switch module,
• wherein the control module is further configured to turn off the switch module to switch off the electrical connection between the energy storage module and the output interface when a duration during which the switch module is in the on state is greater than a second preset duration.