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Single chip working method of wireless charging receiving end for directly charging battery

A technology of wireless charging and battery charging, applied in charging/discharging current/voltage regulation, battery circuit device, arrangement of multiple synchronous batteries, etc. The effect of circuit area and low cost

Inactive Publication Date: 2018-06-19
HALO MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the LDO architecture has another disadvantage, it is not easy to get a better load response speed

Method used

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  • Single chip working method of wireless charging receiving end for directly charging battery
  • Single chip working method of wireless charging receiving end for directly charging battery
  • Single chip working method of wireless charging receiving end for directly charging battery

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with specific examples.

[0030] In this embodiment, the single-chip working method that the wireless charging receiving end directly charges the battery uses an AC rectifier on the chip to complete the power recovery of the wireless receiving end, and uses the power supply for the subsequent system to directly charge the battery connected to the output end. Charging is carried out, wherein, during the charging process, the input power, output current and output voltage are adjusted accordingly by the subsequent system.

[0031] For this working method, the charging architecture proposed by the present invention includes three parts: a power recovery circuit, a wireless communication protocol handshake, and a charging loop.

[0032] The first part is the power recovery circuit, such as image 3 The architecture shown is a full-wave asynchronous rectification circuit; as Figure 4 The architecture sho...

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Abstract

The invention provides a single chip working method of a wireless charging receiving end for directly charging a battery. According to the scheme, the single chip simultaneously realizes wireless communication and quick charging and the scheme has higher charging efficiency, less peripheral components and smaller circuit board design. DC power supply recovery of the wireless receiving end is completed on the chip by using the mode of the AC rectifier. The power supply is utilized for the subsequent circuit to directly charge the battery connected with the output end, wherein the input power, the output current and the output voltage are correspondingly regulated by using the subsequent circuit in the charging process. The basic framework of wireless charging is realized through the singlechip so as to acquire smaller circuit area, lower cost and higher charging efficiency and ensure that the system meets the requirements of actual application.

Description

technical field [0001] The invention relates to the technical field of analog-digital hybrid circuits and integrated circuits, in particular to a single-chip working method for a wireless charging receiver to directly charge a battery. Background technique [0002] Wireless charging technology (Wireless charging technology) is derived from wireless power transmission technology. Wireless charging has two ways to transfer energy. One is the electromagnetic induction type, which generates alternating current of a certain frequency in the primary coil, and generates a certain current in the secondary coil through electromagnetic induction, thereby transferring energy from the transmitting end to the receiving end. Currently the main application protocols are WPC (also known as Qi) and PMA. The frequency of the transmitter is generally relatively low, between 80KHz and 205KHz. The other is the magnetic field resonance type. When the devices at the transmitting end and receivi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12H02J7/00H02M3/158
CPCH02J7/0022H02J7/007H02J7/025H02J50/12H02M3/1582
Inventor 范俊陶海
Owner HALO MICROELECTRONICS CO LTD
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