Ignition overcurrent protection device, starting power equipment and ignition overcurrent protection method

An ignition overcurrent protection method, wherein the method comprises:

• detecting a current value flowing between a starting power and a power-on connector through a current detection circuit;
• determining a current range where the current value is located, and determining a preset time threshold corresponding to the current range;
• and
• controlling a switch located between the starting power and the power-on connector to be turned off when a duration of the current value reaches the preset time threshold;
• wherein the current range comprises at least two of a first current range, a second current range and a third current range;
• the preset time threshold comprises a first preset time threshold, a second preset time threshold and a third preset time threshold;
• the first preset time threshold, the second preset time threshold and the third preset time threshold correspond to the first current range, the second current range and the third current range respectively;
• wherein the first preset time threshold is configured for protecting overcurrent of an operation scenario where an automotive starting button is continuously pressed or a key is continuously twisted to try to start an automotive when the automotive cannot be started;
• the second preset time threshold is configured for protecting overcurrent of an operation scenario where electric energy required by an automobile to be started exceeds a supply capacity of a battery cell of the starting power;
• the third preset time threshold is configured for protecting overcurrent of an operation scenario where an external load is short-circuited;
• and
• the determining the current range where the current value is located and the determining the preset time threshold corresponding to the current range comprise:
• determining the corresponding preset time threshold is the first preset time threshold when the current value is determined to be within the first current range;
• or
• determining the corresponding preset time threshold is the second preset time threshold when the current value is determined to be within the second current range;
• or
• determining the corresponding preset time threshold is the third preset time threshold when the current value is determined to be with the third current range.