Patent ID: 11876370
Assignee: SHENZHEN CAROSS CO., LTD
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 17:
18. The jump start system according to claim 16, wherein the input polarity detection module comprises an optocoupler and a first resistor, the input polarity control module comprises a first diode, a second diode, a third diode, a fourth diode and a second resistor, the voltage stabilization module comprises a voltage stabilization chip, and the two electrode terminals comprise a first electrode terminal and a second electrode terminal;
wherein a first pin of the optocoupler is connected to the first electrode terminal, and connected to a positive electrode of the first diode and a negative electrode of the second diode, a second pin of the optocoupler is connected to the second electrode terminal, and connected to a positive electrode of the third diode and a negative electrode of the fourth diode, a third pin of the optocoupler is grounded, and a fourth pin of the optocoupler is connected to a third pin of the main controller;
wherein a negative electrode of the first diode and a negative electrode of the third diode are connected to an input of the voltage stabilization chip through the second resistor, and an output of the voltage stabilization chip is connected to a fourth pin of the main controller; and
while the first connector is connected to the second connector, when the third pin of the main controller detects that the level signal is a low-level signal, it is determined that the first electrode terminal is connected to a positive electrode of the startup power source, and the second electrode terminal is connected to a negative electrode of the startup power source; and when the third pin of the main controller detects that the level signal is a high-level signal, it is determined that the first electrode terminal is connected to the negative electrode of the startup power source, and the second electrode terminal is connected to the positive electrode of the startup power source.