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Intelligent universal charging identification and control device based on usb interface

An intelligent, identification method technology, applied in circuit devices, battery circuit devices, exchange data chargers, etc., can solve the problems of equipment charging compatibility, incompatibility of charged equipment, and inability to charge equipment safely and efficiently, and achieve high efficiency. The effect of safe charging

Inactive Publication Date: 2021-01-22
成都智朴思互联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are many types of existing devices, and different manufacturers use different identification methods and charging technologies, which has caused compatibility problems in charging devices. That is, the charging devices responsible for charging devices, especially the charging devices of third-party manufacturers, cannot Mutual identification with the charged device of a specific manufacturer makes it impossible to charge the device safely and efficiently, and may even cause charging failure
Or, the charging equipment produced by different manufacturers is not compatible with the charged equipment
Since the device can only be charged safely and efficiently by using the original charging device of the manufacturer, the user of the device is also "kidnapped" by the device manufacturer for consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] An intelligent universal charging identification method based on USB, which runs in a microprocessor, comprises the following steps:

[0054] A. Adjust and set the voltage and current parameters and thresholds and communication signal rules for identification according to the charging identification protocol for correct charging identification;

[0055] B. Detect the access of the equipment, and judge the communication mode between the equipment and the charging equipment;

[0056] Specifically, based on the above identification method, safe and efficient charging of the device can be realized, that is, after the above step B, the charging parameter step C and the charging execution step D can also be obtained,

[0057] Step C: Communicate with the device according to the communication method, detect the voltage and current, and identify the charging of the device according to the obtained voltage, current or pulse communication signal information.

[0058] Step D: Adj...

Embodiment 2

[0062] This embodiment describes the identification of devices supporting the MediaTek protocol on the market. It communicates on Vbus, and its identification method is:

[0063] B-1-1. Capture the current signal on Vbus;

[0064] B-1-2. Analyze the current signal; if the current signal is correct, judge whether the charging identification of the connected device is Vbus current communication mode, if the charging identification is Vbus current communication mode, enter C-1, otherwise, enter B- 1-1;

[0065] C-1. According to the analysis result of the current signal, select the corresponding charging identification protocol for communication, obtain the parameter information required for charging the device, and enter D and C-8;

[0066] D. Adjust the output voltage and output current to charge the device according to the result of charging identification, for example: adjust the voltage to 5V, 7V, 9V according to the MTK protocol, and increase the output voltage to 0V, 0.1...

Embodiment 3

[0069] In addition to the communication on the Vbus, most of the communication between the device and the charging device is on the DP and DM. The specific identification methods are as follows:

[0070] B-2-1, connect DP and DM, set the voltage on DP and DM;

[0071] B-2-2. Detect the voltage and Vbus current on DP and DM;

[0072] B-2-3. If the current is greater than the recognition threshold set by (A), such as 700mA, and the voltage between DP and DM does not meet the requirements of the Qualcomm agreement or the FCP agreement, that is, less than 0.3V or greater than 0.65V, a preliminary judgment can be made If it is VOOC, enter B-3; otherwise, enter B-2-4;

[0073] B-2-4. If the voltage between DP and DM meets the requirements of Qualcomm protocol or FCP protocol, disconnect DP and DM and enter B-2-5, otherwise, enter B-2-1;

[0074] B-2-5. If the voltage on DP and DM conforms to the voltage law of QC2.0, the law is shown in Table 1. If it is judged to be a device supp...

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Abstract

The invention discloses a USB-based intelligent universal charging identification method, which is realized through the following technical solutions: a USB-based intelligent universal charging identification method, which runs in a microprocessor and includes the following steps: A. The identification protocol adjusts and sets the parameters and thresholds of voltage and current used for identification, as well as communication signal rules for correct charging identification. B. Detect the access of the equipment, judge the communication mode between the equipment and the charging equipment; C. Communicate with the equipment according to the communication mode, perform voltage and current detection, and identify the charging of the equipment according to the obtained voltage, current or pulse communication signal information . D. Adjust the output voltage and output current to charge the device according to the result of charging identification.

Description

technical field [0001] The invention relates to the field of equipment charging identification, in particular to an intelligent universal charging identification method based on USB. Background technique [0002] Charging identification is a technology that identifies each other between the charging device and the charged device through communication and detection. Its basic purpose is to ensure the safety and reliability of charging and the matching of charging parameters, so that the identified charging and the charged Establish safe, efficient charging between charging ports. Especially the fast charging schemes of various mobile devices that are becoming popular now, because they need to achieve fast charging through high current, high voltage, etc., it puts forward higher requirements for the safety and reliability of charging. All fast charging schemes have There is a corresponding charging identification protocol to ensure the safety of charging and the matching of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/00H02J7/007H02J7/00034H02J7/00036H02J7/00045
Inventor 朱捷苏伟袁超
Owner 成都智朴思互联科技有限公司
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