A charging device for automatically compensating line loss

Abstract

The invention discloses a charging device for automatically compensating line loss, which comprises an input terminal, a voltage conversion module, an output terminal, a compensation voltage generation module and a voltage regulation module. The charging device receives the charging equipment through the charging line and executes the following charging method: the output terminal receives the control signal sent by the equipment to be charged every preset time; The control signal includes at least a resistance value of the charge line and a current optimal charge voltage obtained in advance;The resistance value is obtained by the device to be charged according to a preset charging voltage; The current optimal charging voltage is obtained by the device to be charged according to the current battery voltage; The compensation voltage generation module generates a line loss compensation voltage according to the control signal; The voltage regulating module regulates the output voltage ofthe voltage converting module according to the line loss compensation voltage. The invention can automatically compensate the line loss and adjust the charging voltage in real time to realize the optimal efficiency charging.

Description

technical field [0001] The invention relates to the technical field of DC charging, in particular to a charging device for automatically compensating for line loss. Background technique [0002] With the continuous development of electronic products, more and more functions are supported by electronic products, and the power consumption of their circuit systems is also increasing. In the case of limited battery capacity, the battery life of electronic products after charging is getting shorter and shorter. Short, resulting in the need to frequently charge electronic products. Most of the traditional charging methods use conventional chargers to charge electronic products. Conventional chargers only support a fixed voltage output, and the charging time is relatively long. Fast charging technology is undoubtedly an effective means to solve this problem. [0003] figure 1 A schematic diagram of a charging method provided by the prior art. The mobile phone adapter first conver...

AI Technical Summary

Problems solved by technology

However, the prior art is in the process of determining the V that optimizes the charging efficiency BUS In the process of voltage value, the factory original charging cable with good quality is used to measure the relevant charging data. Due to the uneven quality of charging cables on the market, the resistance values ​​of different charging cables are different. When the user uses the resistance value When different charging lines are used, the losses on the charging lines are different, resulting in V BUS The voltage value deviates from the V corresponding to the set efficiency optimum point BUS voltage value; in addition, because the voltage, current and electrochemical characteristics of the battery will continue to change during the charging process, the mobile phone adapter with fast charging technology provided by the existing technology cannot adjust the output voltage according to the change of the battery, and the charging efficiency cannot be guaranteed. Has been at the optimum point of efficiency, thus reducing the charging efficiency

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