Power delivery controller, power delivery system and power delivery method

Abstract

Disclosed is a controller, a method and a system for power delivery to a battery. The controller includes a first terminal that provides a first signal to enable a bypass path to deliver power from aninterface to a battery to charge the battery, and includes a second terminal that provides a second signal to enable a conversion circuit to convert input power received at the interface to output power to charge the battery. The controller also determines whether a first adapter or a second adapter is connected to the interface, generates the second signal if the second adapter is connected to the interface, generates the first signal and a request if the first adapter is connected to the interface, and provides the request to the first adapter through the interface. The request includes information indicative of a target level and an instruction that causes the first adapter to provide power at the target level to the interface. Rapid charging and common charging can be selected according to the types of the adapters and external portable devices, so that the charging efficiency can be increased.

Description

technical field [0001] The invention relates to the field of electric energy transmission, in particular to charging of batteries, including technologies of fast charging and ordinary charging of batteries. Background technique [0002] figure 1 Shown is a block diagram of an existing power transfer system 100 for transferring power to a battery 108 . Such as figure 1 As shown, the power transfer system 100 includes an adapter 102 and a host device 104 . The host device 104 includes a power-delivery interface 142 (power-delivery interface, PD interface for short), a power conversion circuit 110 (such as a switching charger), a controller 106 and a system circuit. The power conversion circuit 110 includes a switch circuit (for example, including a high switch 112 and a low switch 116 ), an inductor 114 , and a filter circuit, such as a capacitor 118 . In practical applications, the adapter 102 converts the AC input voltage V AC Converted to DC output voltage V DC , and ...

AI Technical Summary

Problems solved by technology

Therefore, the voltage on the power conversion circuit 110 is relatively high, which also makes the power consumption of the power conversion circuit 110 high.

Moreover, the energy consumption of the electric energy conversion circuit 110 will be converted into a large amount of heat, causing the temperature of the electric energy conversion circuit 110 and the battery 108 to increase, which will cause the deterioration of the battery 108 and reduce the service life of the battery 108

Additionally, inductors (or switches) capable of supporting large currents and / or voltages are usually large and expensive

Therefore, the size of the printed circuit board (printed circuit board, printed circuit board) of the power conversion circuit 110 including the inductor 114 and the switches 112 and 116 is relatively large, and the cost is correspondingly high.

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