TW202127266A - Data cable for fast charging - Google Patents

Abstract

A data cable for connecting a power source to a mobile device is provided. The data cable comprises a data transmission path, a power transmission path, a first multiplexer, a second multiplexer, an identification unit, a power converter, and a control unit. The first multiplexer is disposed on the data transmission path for selectively transmitting an identification signal from a power source to the identification unit. The second multiplexer is disposed on the power transmission path for selectively transmitting the original charging power from the power source to the power converter or the mobile device. The control unit is utilized to control the switching of the first multiplexer and the second multiplexer, and selectively control the power converter to generate a converted charging power corresponding to the mobile device based on the identification result of the identification unit.

Description

Data cable for fast charging

This case is about a data cable, especially a data cable for fast charging.

With the popularization of portable electronic devices such as mobile phones and tablets, users have increasingly higher requirements for endurance and charging speed. In recent years, major brands of mobile phones have launched their own fast charging technology to meet the needs of users.

However, different brands of mobile phones use different fast charging technologies, and they often need to be paired with original fast charging chargers to enable the fast charging function. If users need to perform fast charging in different places, they must additionally purchase original chargers. This limitation is easy to derive the problem of too many chargers, and at the same time it will cause users' troubles.

This case provides a data cable for connecting a charging device and a mobile device. The data line includes a data transmission path, a power transmission path, a first multiplexer, a second multiplexer, an identification unit, a power conversion module, and a control unit. The data transmission path is used to receive an identification signal from a charging device. Power transmission path system To receive the original charging power from one of the charging devices.

The first multiplexer is arranged on the data transmission path. The identification unit is electrically connected to the first multiplexer. The first multiplexer is used to selectively transmit the identification signal from the charging device to the identification unit. The second multiplexer is arranged on the power transmission path. The power conversion module is electrically connected to the second multiplexer. The second multiplexer is used to transmit the original charging power from the charging device to the power conversion module or directly to the mobile device.

The control unit is electrically connected to the first multiplexer, the second multiplexer, the identification unit and the power conversion module. The control unit controls the switching state of the first multiplexer and the second multiplexer according to the identification result of the identification unit, and controls the power conversion module to selectively generate converted charging power corresponding to one of the charging devices.

Through the data cable in this case, the user can convert the fast charging chargers with different fast charging protocols into the fast charging protocol and power control corresponding to the mobile device being charged. In this way, the problem of too many chargers can be solved, and the fast charging function of the charger can be effectively used to improve the compatibility between the mobile device and the fast charging charger.

The specific embodiments adopted in this case will be further explained by the following embodiments and drawings.

10‧‧‧Data line

12‧‧‧First connector

14‧‧‧Second connector

15‧‧‧Cable

152‧‧‧Power Transmission Path

154‧‧‧Ground wire

156‧‧‧Data transmission path

158‧‧‧Channel configuration path

16‧‧‧The first multiplexer

17‧‧‧Second multiplexer

18‧‧‧Microcontroller

19‧‧‧Power Conversion Module

182‧‧‧Identification Unit

184‧‧‧Control Unit

186‧‧‧Channel configuration logic unit

CC1, CC2‧‧‧Channel configuration pins

M1,M2,M,a1,a2,a,b1,b2,b‧‧‧Contact

The first figure is a schematic diagram of the structure of an embodiment of the data line in this case;

The second figure is a block of an embodiment of the data line in the first figure in the bypass mode Schematic diagram

The third figure is a block diagram of an embodiment of the data line in the first figure in the charging mode; and

The fourth figure is a flowchart of an embodiment of the charging method in this case.

The specific implementation of this case will be described in more detail below in conjunction with the schematic diagram. According to the following description and the scope of the patent application, the advantages and features of this case will be clearer. It should be noted that the drawings are in a very simplified form and all use imprecise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of this case.

The first figure is a schematic diagram of the structure of an embodiment of the data line in this case. The figure is an example of the data line structure of a universal serial bus (USB) 2.0 mode A to C (type A to C).

The data cable 10 includes a first connector 12 (that is, the USB Type-A connector on the left in the figure), a second connector 14 (that is, the USB Type-C connector on the right in the figure), and a cable 15. The first connector 12 is used to connect a power source (not shown), such as a charger, an adapter, or other electronic devices with charging function, such as notebook computers and desktop computers Wait. The second connector 14 is used to connect a mobile device (not shown). This mobile device can be a mobile phone, a tablet computer or other smart wearable device. The cable 15 connects the first connector 12 and the second connector 14.

The first connector 12 (ie, the USB Type-A connector) has 4 pins, which are the power supply pin VBUS, the ground pin GND, D+ pin and D- pin. The D+ pin and D- pin are used for data transfer. The second connector 14 (ie, the USB Type-C connector) has 12x2 pins to support positive and negative insertion. The figure shows 12 pins to simplify the description.

As shown in the figure, the second connector 14 has power supply pins A4/B4 VBUS and A9/B9 VBUS, and is connected to the power supply pin VBUS of the first connector 12 through a power transmission path 152. The second connector 14 has ground pins A1/B1 GND and A12/B12 GND, and is connected to the ground pin GND of the first connector 12 through a ground wire 154. The second connector 14 has D+ pins A6/B6 D+ and D- pins A7/B7 D-, and is connected to the D+ pins and D- pins of the first connector 12 through a data transmission path 156.

The data line 10 also includes a first multiplexer 16, a second multiplexer 17, a microcontroller 18 and a power conversion module 19. The microcontroller 18 is electrically connected to the first multiplexer 16, the second multiplexer 17 and the power conversion module 19 to control the switching state of the first multiplexer 16 and the second multiplexer 17, and control Operation of the power conversion module 19.

According to the switching state of the first multiplexer 16 and the second multiplexer 17, the operation mode of the data line 10 can be divided into a bypass mode and a charge mode. The second diagram is a block diagram of an embodiment of the data line 10 in the first diagram in the bypass mode. The third diagram is a block diagram of an embodiment of the data line 10 in the first diagram in the charging mode. The figure also shows the internal functional elements of the microcontroller 18, namely the identification unit 182, the control unit 184, and the channel configuration logic unit 186.

The first multiplexer 16 is arranged on the data transmission path 156 上, and includes 6 contacts M1, M2, a1, a2, b1, b2, where the contacts M1, M2 are connected to the D+ pin and D- pin of the first connector 12, and the contacts a1, a2 It is connected to the D+ pin and D- pin of the second connector 14, and the contacts b1 and b2 are connected to the identification unit 182 of the microcontroller 18. The first multiplexer 16 can selectively conduct the contacts M1 and a1 and the contacts M2 and a2, or the contacts M1 and b1 and the contacts M2 and b2. In this way, the first multiplexer 16 can receive the identification signal from the charging device through the D+ pin and the D- pin of the first connector 12 and selectively transmit it to the identification unit 182 of the microcontroller 18.

The second multiplexer 17 is arranged on the power transmission path 152 and includes three contacts M, a, b, wherein the contact M is connected to the VBUS pin of the first connector 12, and the contact a is across The power conversion module 19 is directly connected to the VBUS pin of the second connector 14, and the contact b is connected to the power conversion module 19. In this way, the second multiplexer 17 can transmit the original charging power from the charging device to the power conversion module 19 for conversion through the power supply pin VBUS of the first connector 12, or directly transmit it to the mobile device.

The power conversion module 19 is electrically connected to the second multiplexer 17. The power conversion module 19 can be used to convert the original charging power from the charging device to the converted charging power for transmission to the mobile device. In one embodiment, the power conversion module 19 may include a boost circuit to increase the charging voltage and increase the charging speed. In one embodiment, the power conversion module 19 may include a charge pump to simplify the circuit and reduce power conversion loss. In one embodiment, the power conversion module 19 may include a buck-boost circuit Or a buck circuit to provide greater flexibility.

The identification unit 182 of the microcontroller 18 is electrically connected to the first multiplexer 16. The identification unit 182 can receive the identification signal from the charging device through the first multiplexer 16. The identification unit 182 of the microcontroller 18 can identify the charging protocol supported by the charging device according to the identification signal. In an embodiment, the identification unit 182 may be an identification chip of the BC1.2 specification, QC protocol or other fast charging protocol.

The channel configuration logic unit 186 of the microcontroller 18 is connected to the channel configuration pins CC1 and CC2 of the second connector 14 through a channel configuration path 158 to confirm the connection status of the second connector 14 and the mobile device. In one embodiment, the channel configuration logic unit 186 can communicate with the power delivery (PD) control chip in the mobile device through the channel configuration pins CC1, CC2 to determine the charging of the mobile device by the data line 10 Specifications, such as charging voltage, charging current, etc. In one embodiment, the channel configuration logic unit 186 can be a logic chip or a logic circuit.

The control unit 184 of the microcontroller 18 is electrically connected to the first multiplexer 16, the second multiplexer 17 and the power conversion module 19. On the one hand, the control unit 184 can identify the charging protocol supported by the charging device through the identification unit 182 to control the switching state of the first multiplexer 16 and the second multiplexer 17 accordingly. On the other hand, the control unit 184 can confirm whether the mobile device is correctly connected to the second connector 14 through the channel configuration logic unit 186, and determine the charging specifications supported by the mobile device. After the control unit 184 confirms that the mobile device is correctly connected to the second connector 14, it can select according to the charging protocol supported by the charging device and the charging specification supported by the mobile device. The power conversion module 19 is controlled to generate and convert charging power corresponding to one of the charging specifications supported by the mobile device to provide the mobile device. In an embodiment, the control unit 184 may be a control chip.

In one embodiment, the control unit 184 can build in multiple conversion tables for charging protocols to meet the needs of different mobile devices. These convertible charging protocols may include PD protocol, PD3.0 protocol, QC protocol, Oppo VOOC flash charging, or fast charging protocols such as Huawei SCP.

In one embodiment, considering the difference in internal space between the first connector 12 (ie, the USB Type-A connector) and the second connector 14 (ie, the USB Type-C connector), the first multiplexer 16, the second The two multiplexers 17, the microcontroller 18 and the power conversion module 19 are arranged in the inner space of the first connector 12. But it is not limited to this. These elements can also be arranged in the inner space of the second connector 14 or dispersed in the inner space of the first connector 12 and the second connector 14.

The following describes the two operation modes of the data line 10.

Please refer to the second figure, when the data line 10 is in the bypass mode, the control unit 184 will control the first multiplexer 16 to switch to the contacts a1, a2 so that the D+ pin of the first connector 12 is connected to the D- The pins are connected to the D+ pin and D- pin of the second connector 14 so that the charging device can be directly connected to the mobile device through the data transmission path 156. In addition, the control unit 184 controls the second multiplexer 17 to switch to contact a, so that the VBUS pin of the first connector 12 is connected to the VBUS pin of the second connector 14. In this way, the original charging power of the charging device is The power transmission path 152 can be directly transmitted to the mobile device. In bypass mode, charging devices and mobile devices It can communicate directly for data transmission or for charging.

As shown in the third figure, when the data line 10 is in the charging mode, the control unit 184 controls the first multiplexer to switch to the contacts b1 and b2, and the contacts b1 and b2 are connected to the identification unit 182. In this way, the identification signal from the charging device can be transmitted to the identification unit 182. Secondly, the control unit 184 controls the second multiplexer 17 to switch to the contact b, and the contact b is connected to the power conversion module 19. In this way, the original charging power from the charging device can be transmitted to the power conversion module 19 for conversion. In addition, the control unit 184 controls the power conversion module 19 to generate converted charging power corresponding to the charging specifications of the mobile device according to the recognition result of the recognition unit 182 (ie, the charging protocol of the charging device), and output it to the mobile device through the power transmission path 152.

In one embodiment, the default mode of the data line 10 is the charging mode. That is to say, when the user connects the charging device with the data cable 10, the identification signal from the charging device will first be transmitted to the identification unit 182 through the first multiplexer 16, and the control unit 184 will then use the identification unit 182 to confirm that the charging device supports According to the charging protocol, it is determined whether to maintain the charging mode or switch to the bypass mode.

For example, if the charging device supports the BC1.2 standard or the QC protocol, the mobile device supports the PD3.0 standard. The traditional technology cannot use the fast charging technology supported by the BC1.2 specification, QC agreement or PD3.0 specification. However, if the data cable 10 in this case is used, the control unit 184 can identify the charging protocol (BC1.2 standard or QC protocol) supported by the charging device through the identification unit 182, and calculate the power supply capacity of the charging device based on it, and convert it Power supply type for fast charging technology supported by mobile devices The formula (that is, the charging power according to the PD3.0 specification) is provided to the mobile device. In one embodiment, when the control unit 184 calculates the power output of the data line, it first deducts the loss of the data line 10 (especially the loss of the power conversion module 19 for power conversion and the loss of the internal components of the data line 10). ), then calculate the corresponding power supply specification and provide it to the mobile device.

The foregoing embodiment uses a USB Type-A to Type-C data cable as an example to illustrate the technology of this case. But it is not limited to this. This case can also be applied to other types of data cables, such as USB 3.0, USB Type-C, etc., and both ends of this data cable can also use the same type of connectors, for example, a data cable with USB Type C connectors at both ends.

Through the data cable 10 in this case, the user can recognize the charging protocol of the fast-charging charger and convert it into the fast-charging protocol and power control corresponding to the mobile device to quickly charge the mobile device. In this way, the problem of too many chargers can be solved, and the fast charging function of the charger can be effectively used to improve the compatibility between the mobile device and the fast charging charger.

The fourth figure is a flowchart of an embodiment of the charging method in this case. This charging method uses the data line 10 shown in the first figure for charging. This charging method includes the following steps.

First, in step S120, the data line 10 is connected to a charging device to receive the identification signal and the original charging power from the charging device. This step is to insert the first connector 12 (such as a USB Type-A connector) into a corresponding port or adapter of the charging device, such as a USB charging port on a computer. At this time, the data line is in the preset mode, that is, the charging mode.

When the data line 10 is connected to the charging device, the data line 10 The chips or electronic components, such as the first multiplexer 16, the second multiplexer 17, the microcontroller 18, the power conversion module 19, etc., can be powered for operation.

Subsequently, in step S140, an identification signal from the charging device is received, and the charging protocol supported by the charging device is identified according to the identification signal. This step can be performed by the identification unit 182 of the microcontroller 18. In the preset mode, the identification unit 182 of the microcontroller 18 can receive the identification signal from the charging device through the first multiplexer 16.

Next, in the judgment step S160, it is judged whether the fast charging technology of the identified charging protocol is supported. This step can be executed by the control unit 184 of the microcontroller 18. For example, if the source charging protocol supported by the data line 10 is BC1.2 standard or QC protocol by default, this step will confirm whether the charging protocol supported by the charging device is BC1.2 standard or QC agreement.

If the judgment result shows that it is not supported, the process proceeds to step S170 to switch to the bypass mode. Step S170 can be executed by the control unit 184 of the microcontroller 18.

If the judgment result shows support, it remains in the charging mode. The process will then proceed to determining step S180 to further determine whether the second connector 14 of the data line 10 is connected to the mobile device. This step can be performed by the control unit 184 and the channel configuration logic unit 186 of the microcontroller 18. If the judgment result of step S180 is yes, the flow proceeds to step S185. If the judgment result of step S180 is no, the process will repeat judgment step S180.

In step S185, according to the power output of the charging device Capability and fast charging technology supported by mobile devices, convert the original charging power from the charging device to the converted charging power corresponding to the mobile device and output it to the mobile device. This step can be performed by the control unit 184 of the microcontroller 18 and the power conversion module 19. In this way, even if the fast charging technology supported by the charging device is different from the fast charging technology supported by the mobile device, fast charging can be performed through the conversion of the data line 10.

The above are only preferred embodiments of this case, and do not impose any restriction on this case. Any person in the technical field who makes any form of equivalent substitution or modification to the technical means and technical content disclosed in this case within the scope of the technical means of this case is not deviated from the technical means of this case. It still falls within the scope of protection of this case.

10‧‧‧Data line

12‧‧‧First connector

14‧‧‧Second connector

15‧‧‧Cable

152‧‧‧Power Transmission Path

154‧‧‧Ground wire

156‧‧‧Data transmission path

158‧‧‧Channel configuration path

16‧‧‧The first multiplexer

17‧‧‧Second multiplexer

18‧‧‧Microcontroller

19‧‧‧Power Conversion Module

Claims (12)

A data line is used to connect a charging device and a mobile device, the data line includes: A data transmission path for receiving an identification signal from the charging device; A power transmission path for receiving original charging power from one of the charging devices; A first multiplexer arranged on the data transmission path; An identification unit is electrically connected to the first multiplexer, the first multiplexer is used to selectively transmit the identification signal from the charging device to the identification unit, and the identification unit identifies according to the identification signal A charging protocol supported by the charging device; A second multiplexer arranged on the power transmission path; A power conversion module electrically connected to the second multiplexer, the second multiplexer is used to transmit the original charging power from the charging device to the power conversion module or directly to the mobile device ;as well as A control unit electrically connected to the first multiplexer, the second multiplexer, the identification unit and the power conversion module, the control unit controls the first multiplexer according to the identification result of the identification unit And the switching state of the second multiplexer, and controlling the power conversion module to selectively generate a conversion charging power corresponding to one of the mobile devices. For example, the data line described in claim 1, wherein, when the data line is in a bypass mode, the control unit controls the first multiplexer to directly connect the charging device to the mobile device through the data transmission path, and Control the second multiplexer to the charging device The original charging power is directly transmitted to the mobile device through the power transmission path. The data line described in item 1 of the scope of patent application, wherein, when the data line is in a charging mode, the control unit controls the first multiplexer to transmit the identification signal from the charging device to the identification unit, and The second multiplexer is controlled to transmit the original charging power from the charging device to the power conversion module to generate the converted charging power and output to the mobile device. For the data line described in item 3 of the scope of patent application, one of the preset modes of the data line is the charging mode. For the data line described in claim 1, wherein, when the data line is in a preset mode, the control unit controls the first multiplexer to transmit the identification signal from the charging device to the identification unit. For the data line described in item 1 of the scope of patent application, the power conversion module is a boost circuit, a buck circuit, or a buck-boost circuit. The data line described in item 1 of the scope of patent application, wherein the data line is a universal serial bus (USB) data line. The data cable described in item 1 of the scope of patent application, wherein the data cable includes a first connector and a second connector, the first connector is used to connect the charging device, and the second connector is For connecting the mobile device, the first multiplexer, the second multiplexer, the identification unit, the power conversion module and the control unit are located at the first connector. For the data cable described in item 8 of the scope of patent application, the first connector is a universal serial bus mode A (Type-A) plug. For the data cable described in item 8 of the scope of patent application, the second connector is a universal serial bus mode C (Type-C) plug. For example, the data line described in item 1 of the scope of patent application further includes a configuration channel logic unit, which is electrically connected to the control unit, and the channel configuration logic unit is used to determine whether the data line is electrically connected To the mobile device. For the data line described in item 1 of the scope of patent application, the control unit and the identification unit are integrated in a microcontroller.

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