Charging device and terminal
A charging device and battery technology, which is applied in the electronic field, can solve the problems that the battery current or battery voltage exceeds the standard, cannot meet the requirements of high-current charging, and the charging chip cannot be fully applied, so as to achieve the effect of improving fluctuations
Active Publication Date: 2019-01-11
HONOR DEVICE CO LTD
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Problems solved by technology
Due to the low charging efficiency of the switching power supply circuit and the inability to meet the requirements of high current charging, a charging chip based on a switched capacitor circuit appeared.
[0004] However, the output of the switched capacitor circuit depends entirely on the input. When the input power supply energy of the charging chip based on the switched capacitor circuit fluctuates, the charging energy provided by the charging chip for the battery will also fluctuate accordingly, resulting in battery failure. The battery current or battery voltage exceeds the standard problem
Therefore, charging chips based on switched capacitor circuits cannot be fully applied to scenarios that require high charging energy.
Method used
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Embodiment Construction
[0050] figure 1 A schematic structural diagram of a switched capacitor charging circuit provided for this application, in figure 1 The shown switched capacitor circuit mainly includes a control module, switching transistors Ta, Tb, Tc and Td, capacitor C1, and input terminal a1, input terminal a2, output terminal b1 and output terminal b2. Such as figure 1 As shown, the input terminal a1 and the input terminal a2 are used to connect the power supply and receive the power supply energy provided by the power supply. Since the energy in the circuit is transmitted in the form of voltage and current, the power supply voltage Vin represents the power supply energy here, and the output terminal b1 and output terminal b2 are used to connect the battery to provide charging energy for the battery, where the charging voltage V0 represents the charging energy. The first electrode of the switching transistor Ta is connected to the input terminal a1, and the gate is connected to the contr...
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A charging device and a terminal are provided. The charging device includes a sampling module, a control module, a clamping module, and a switched capacitor module. The sampling module is connected tothe control module for connecting with the battery and collecting the current state of the battery. The information is provided to the control module; the control module is respectively connected with the clamp module and the switch capacitor module, and is configured to adjust the output energy of the clamp module according to the state information, and provide a drive signal for the switch capacitor module; The bit module is connected to the switched capacitor module for connecting with the power supply and receiving the power supply power provided by the power supply, and processing the power supply energy into the output capacitor for the switched capacitor module; the switch capacitor module for connecting with the battery, according to the control module The drive signal provided and the output energy provided by the clamp module provide charging energy for the battery. It is beneficial to improve the problem that the charging energy provided by the charging chip fluctuates withthe power supply.
Description
[0001] This application claims the priority of the Chinese patent application submitted to the China Patent Office on October 20, 2017, the application number is 201710990022.0, and the title of the invention is "a closed-loop protection method for preventing switching capacitor charging from overvoltage and overcurrent", the entire content of which Incorporated in this application by reference. technical field [0002] The present application relates to the field of electronic technology, and in particular to a charging device and a terminal. Background technique [0003] When charging the battery in the terminal, an external power supply provides a power supply voltage, which is converted into a charging voltage by the charging chip in the terminal and supplied to the battery. In the current terminal market, charging chips are mostly based on switching power supply circuits. Due to the low charging efficiency of the switching power supply circuit, which cannot meet the re...
Claims
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IPC IPC(8): H02J7/00
CPCH02J7/0077H02J7/0029H02J7/00304
Inventor 周海滨邱钰鹏常智张铁利
Owner HONOR DEVICE CO LTD