TWI448037B - A charging apparatus and method - Google Patents

Description

Charging device and method

The present invention relates to a charging device and method, and more particularly to a charging device for a portable electronic device and a charging method therefor.

Electronic devices such as mobile phones, personal digital assistants (PDAs), and digital cameras are increasingly used. These portable electronic devices are typically charged by connecting a computer or a fixed power source. Please refer to FIG. 1 , which is a schematic diagram of charging a plurality of conventional portable electronic devices connected to a computer. The portable electronic devices such as the mobile phone 103 , the personal digital assistant 104 , and the digital camera 105 generally have a USB ( In the Universal Serial Bus interface, the USB interface of each electronic device can be connected to the host computer 101 by a data line (not shown) via a hub 102, and charged by the computer 101. However, when a user carrying a plurality of portable electronic devices such as a mobile phone and a digital camera is outdoors, and is inconvenient to use a computer or a fixed power source for charging, the above electronic devices cannot be connected to each other, if one of them is portable. The electronic device is low in power, and even if the portable electronic device carried by the user still stores enough power, it cannot be provided to the portable electronic device with insufficient power for the user to use in time.

In view of the above, it is necessary to provide a charging device that can be used for charging and discharging between portable electronic devices.

In addition, it is necessary to provide a charging method using the above charging device.

A charging device includes a microprocessor, a control module, a interface module, a charging and discharging module, and a power storage module, and the charging and discharging module and the power storage module The microprocessor module is electrically connected, and the interface module is configured to implement interconnection of the plurality of charging devices, and confirm that the host is also a slave end, and the startup control module controls the microprocessor to enable the power storage module to be charged. The discharge module performs charging and discharging, and the charging device can charge and discharge each other.

A charging method includes the steps of: providing at least two charging devices; connecting the charging device; setting the host end and the slave end; confirming the host end and the slave end; discharging from the host end to the slave end, and the slave end Charging.

Compared with the prior art, the charging device of the present invention can fully utilize the stored power by charging and discharging with each other.

101‧‧‧ computer

102‧‧‧ hub

103‧‧‧Mobile Phone

104‧‧‧PDA

105‧‧‧Digital camera

10‧‧‧Charging device

11‧‧‧Microprocessor

12‧‧‧Control Module

121‧‧‧Host Controller

122‧‧‧ slave controller

13‧‧‧Interface module

131‧‧‧USB interface

132‧‧‧USB Transceiver

133‧‧‧Detection module

14‧‧‧Charge and discharge module

15‧‧‧Power storage module

20‧‧‧Charging device

21‧‧‧Microprocessor

22‧‧‧Control Module

221‧‧‧Host Controller

222‧‧‧ slave controller

23‧‧‧Interface module

231‧‧‧USB interface

232‧‧‧USB Transceiver

233‧‧‧Test module

24‧‧‧Charge and discharge module

25‧‧‧Power storage module

FIG. 1 is a schematic diagram of a conventional portable electronic device connected to a computer for charging.

2 is a functional block diagram of a charging device for performing interactive charging according to a preferred embodiment of the present invention.

FIG. 3 is a diagram showing pin connections of a USB interface when a charging device is alternately charged according to a preferred embodiment of the present invention.

FIG. 4 is a flow chart showing the operation of the charging device in the preferred embodiment of the present invention.

The invention discloses a charging device and a method for interactive charging between portable electronic devices such as mobile phones, PDAs and digital cameras.

The charging device 10 can be installed in an electronic device such as a mobile phone, a PDA or a digital camera. After the two charging devices 10 respectively installed in different portable electronic devices are connected to each other, the user can set one of the charging devices 10 to be On the host side, another charging device 10 is a slave, and the host can charge the slave. Referring to FIG. 2 and FIG. 3 , the charging device 10 includes a microprocessor 11 , a control module 12 , an interface module 13 , a charging and discharging module 14 , and a power storage module 15 . The charging and discharging module 14 and the power storage module 15 are electrically connected to the microprocessor 11 .

The microprocessor 11 is configured to process internal data and applications of the charging device 10. The control module 12 is configured to set the charging device 10 as a host end and a slave end, and includes a host controller 121 and a slave controller 122. When the charging device 10 is set as the host terminal, the host controller 121 is activated; when the charging device 10 is set as the slave terminal, the slave controller 122 is activated. The host controller 121 and the slave controller 122 can respectively control the microprocessor 11 to start a charge and discharge program. In addition, the charging device 10 can be automatically determined by the microprocessor 11 according to the voltage level of the power storage module 15 that the host end is also the slave end.

The interface module 13 includes a USB interface 131, a USB transceiver 132 and a detection module 133. The USB interface 131 is configured to establish a wired connection with the electronic device, and includes a VBUS pin, an ID pin, a D+ pin, a D- pin and a GND pin, wherein the VBUS pin is used for input. And the output power, the ID pin is used to confirm the host end and the slave end when connecting with other electronic devices. The D+ pin and the D- pin are used for transmitting data, and the GND pin is grounded. The USB transceiver 132 is configured to transfer data between the USB interface 131 and the detection module 133. The detection module 133 is configured to obtain ID pin information from the USB transceiver 132, thereby detecting that the charging device 10 is a host end and a slave end.

The charging and discharging module 14 performs voltage conversion between the interface module 13 and the power storage module 15 to store external power to the power storage module 15 through the interface module 13 or to store the power storage module 15 The power is output to the outside world. The power storage module 15 is used to store power and supply power to the microprocessor 11.

Referring to FIG. 4 together, the interactive charging of the charging device 10 includes the following steps: firstly providing the above two charging devices 10, 20. The charging devices 10 and 20 are respectively installed in different portable electronic devices. The other portable electronic device is directly charged by the charging device 10, 20 by using the power of a portable electronic device.

Step S1: The USB interfaces 131, 231 of the charging devices 10, 20 are connected.

Step S2: One of the charging devices 10, 20 is set, and the other is the slave.

Step S3: The charging device 20 transmits the ID pin information to the charging device 10.

Step S4: The charging device 10 determines, according to the information of the ID pin of the charging device 20, that the charging device 20 is the host end and is also the slave end.

Step S5: The host side discharges the slave end. For example, if the charging device 10 is the host end, the charging device 20 is the slave end. At this time, the microprocessor 11 controls the charging and discharging module 14 to discharge to the outside.

Step S6: The power is transmitted to the slave. As described above, the power is transmitted from the charging and discharging module 14 to the slave USB interface 231 via the USB interface 131.

Step S7: The slave terminal obtains the power transmitted by the host end and performs charging. At this time, the power source is input to the charge and discharge module 24 via the USB interface 231.

Step S8: the slave side stores the power source, that is, the charging and discharging module 24 stores the power source to the power source. Storage module 25.

It can be understood that the above charging and discharging process can perform mutual charging between the plurality of charging devices 10. At this time, one of the charging devices 10 can be set to serve as the host end, and the other charging devices 10 serve as the slave terminals, with one tapping. The device is connected to the host side and vice versa.

10‧‧‧Charging device

11‧‧‧Microprocessor

12‧‧‧Control Module

121‧‧‧Host Controller

122‧‧‧ slave controller

13‧‧‧Interface module

131‧‧‧USB interface

132‧‧‧USB Transceiver

133‧‧‧Detection module

14‧‧‧Charge and discharge module

15‧‧‧Power storage module

20‧‧‧Charging device

21‧‧‧Microprocessor

22‧‧‧Control Module

221‧‧‧Host Controller

222‧‧‧ slave controller

23‧‧‧Interface module

231‧‧‧USB interface

232‧‧‧USB Transceiver

233‧‧‧Test module

24‧‧‧Charge and discharge module

25‧‧‧Power storage module

Claims (9)

A charging device includes a microprocessor, a control module, a interface module, a charging and discharging module, and a power storage module, and the charging and discharging module and the power storage module The microprocessor module is electrically connected, and the interface module is configured to implement interconnection of the plurality of charging devices, and confirm that the host is also a slave end, and the startup control module controls the microprocessor to enable the power storage module to be charged. The charging module performs charging and discharging, and the improvement is that the charging device can charge and discharge each other, and the charging device is automatically determined by the microprocessor as the host end or the slave end according to the voltage level of the voltage storage module. The charging device of claim 1, wherein the control module comprises a host controller and a slave controller, respectively controlling the charging and discharging module for discharging and charging. The charging device of claim 2, wherein the interface module comprises a universal serial bus (USB) interface, a USB transceiver and a detection module, wherein the USB interface is used for connecting the connection device, The USB transceiver is used to transmit data, and the detection module is used to detect the slave end and the host end. The charging device of claim 2, wherein the charging device further comprises a tapping device, the tapping device is connected to the USB interface of the host end charging device at one end, and the USB interface of the slave charging device is connected to the other end. The charging device of claim 4, wherein the tapping device can connect the USB interface of the plurality of charging devices from the machine end. A charging method is improved in that the charging method comprises the steps of: providing at least two charging devices, wherein the charging devices are respectively installed on different portable electronic devices; and connecting the charging devices; Setting the host end and the slave end, the charging device is automatically determined by the microprocessor as the host end or the slave end according to the voltage level of the voltage storage module; confirming the host end and the slave end; discharging from the host end to the slave end, Charge the slave. The charging method of claim 6, wherein the charging method further comprises a step of transmitting an identification signal of the charging device before confirming that the host end and the slave end are based on the step of confirming that the host end is a slave end . The charging method according to claim 6, wherein in the step of connecting the charging device, when the charging device is two, they are directly connected to each other. The charging method according to claim 6, wherein in the step of connecting the charging device, if there are more than two charging devices, a tapping device is used, and one end of the tapping device is connected to one of the charging devices, and the other end is connected to the charging device. Connect the remaining multiple charging devices.