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Charging device and charging control method and device

A charging control method and charging device technology, which are applied in the direction of circuit devices, battery circuit devices, emergency protection circuit devices, etc., can solve the problems of charging circuit damage, communication element damage, etc., and achieve the effect of soft start

Pending Publication Date: 2021-04-20
SZ DJI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of the voltage difference, a surge will be formed at the port when the battery is inserted, the surge voltage will cause damage to the communication components, and the surge current will cause damage to the charging circuit of the charger

Method used

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  • Charging device and charging control method and device
  • Charging device and charging control method and device
  • Charging device and charging control method and device

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Embodiment Construction

[0046] At present, chargers generally use CC / CV technology. First, CC constant current is used to charge the battery. When the battery is fully charged, CV constant voltage is used to float the battery. Therefore, the charger always sets the CV voltage to the full charge voltage Vmax of the battery. . When the battery is at the lowest voltage - Vbat, there is a voltage difference of Vmax-Vbat instantly when the charger is plugged in, which will cause a huge inrush current. If the battery is connected in series with 10 cells, the voltage difference between the battery and the charger is (4.2V-3V)*10=12V, and the contact impedance of the two terminals is 50 milliohms. The moment the charger is inserted into the battery, The surge current is 12V÷50mR=240A, which will cause interference to the communication line or the risk of breakdown of the charging MOS tube. If the battery needs to be unplugged from the charger during the charging process, due to the shaking problem of manual...

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Abstract

The present invention relates to a charging device and a charging control method and device. The charging device (100) comprises a charging interface (110) and a processor (120), the charging interface comprises a power supply output end, and the power supply output end can be electrically connected with the power supply end of the device (200) to be charged. The processor is electrically connected with the charging interface and is used for acquiring real-time voltage of a power supply end of the to-be-charged device when the to-be-charged device is inserted into a charging interface of the charging device; determining the output voltage of the power supply output end according to the real-time voltage and a gradient threshold value, so as to charge the to-be-charged device through the output voltage; and repeating the steps until the output voltage is increased to the full charge voltage of the to-be-charged device. According to the invention, soft start in the charging starting process is realized, the problem of sparking phenomenon caused by hot plug in the charging process is solved, and the problems of surge current and sparking caused by high voltage difference at the moment when the to-be-charged device is inserted into the charging device are solved at the same time.

Description

technical field [0001] The present application relates to the field of charging, and in particular to a charging device, a charging control method and a device. Background technique [0002] For batteries with high-power multi-cells connected in series, the battery PACK voltage is usually relatively high, and it needs to be charged with a high-voltage output charger. Usually, the full charge voltage of a single cell is 4.2V, and the initial charge voltage is 3V. Therefore, for batteries with multiple cells connected in series, the difference between the initial charge voltage and the full charge voltage will reach more than 10V. When the battery is inserted into the charger, you will hear the sound of ignition, which is caused by a voltage difference above 10V. Due to the existence of the voltage difference, a surge will be formed at the port when the battery is inserted, the surge voltage will cause damage to the communication element, and the surge current will cause dama...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02H7/20H02H9/02H02H9/04H01M10/44
CPCY02E60/10H02H7/20H02H9/02H02J7/00H02H9/04H01M10/44
Inventor 林宋荣李鹏
Owner SZ DJI TECH CO LTD
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