Charger

Abstract

The invention discloses a charger, which comprises a single chip microcomputer, a voltage output module, a relay, an output voltage detection module and a battery voltage detection module, wherein a first end of the relay is connected with the voltage output module and the output voltage detection module separately and a second end of the relay is connected with the battery voltage detection module and a battery separately; the voltage output module, the output voltage detection module, the relay and the battery voltage detection module all are connected with the single chip microcomputer; the output voltage detection module is used for detecting a voltage value of the first end; the battery voltage detection module is used for detecting a voltage of the second end; and the single chip microcomputer is used for adjusting the voltage value output by the voltage output module through adjusting the duty ratio of a square wave of the single chip microcomputer when the voltage value of the first end is different from the voltage value of the second end, so that the voltage value of the first end is the same as that of the second end. The charger has higher reliability.

Description

technical field [0001] The invention relates to the technical field of battery charging equipment, in particular to a charger. Background technique [0002] With the change of human environment and the call for energy saving and emission reduction, the development of green energy has become the development theme of today's society. New energy vehicles, such as electric vehicles, as clean, low-carbon green vehicles, are favored by countries all over the world. great concern. [0003] Rechargeable batteries are an important part of electric vehicles, which directly affect the performance of the vehicle and the driving experience of users. At present, the charging of the rechargeable battery is mainly realized by the charger. After the charger is connected to the mains, the current is rectified and output, and then the corresponding rechargeable battery is powered. The charger needs to use a relay as a switch. When the output relay is closed, The charger starts charging the b...

AI Technical Summary

Problems solved by technology

Since the output relay is prone to sparking and arcing during the operation process, the existing technology needs to add a pre-charging circuit composed of a diode and a resistor, and use it in parallel with the relay to prevent the occurrence of sparking and arcing, but the use of diodes And resistors, on the one hand, increase the cost of hardware, on the other hand, diodes and resistors are prone to failure, and the reliability is not high. Once the diode or resistor fails, there will be a voltage difference between the contacts at both ends of the relay, making the relay close when it is closed. Easy to produce sparking and arcing phenomenon

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