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Rechargeable device, charger and charging system

A technology for charging equipment and chargers, applied in charging/discharging current/voltage regulation, current collectors, battery circuit devices, etc., which can solve problems such as long boosting time and cumbersome software processes

Active Publication Date: 2021-03-02
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defect that the mobile phone needs to rely on its own internal voltage detection circuit to detect the input voltage in the prior art, especially for fine stepping, the mobile phone needs multiple detections, the boosting time is long, and the software process is cumbersome , providing a rechargeable device, a charger and a charging system

Method used

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  • Rechargeable device, charger and charging system
  • Rechargeable device, charger and charging system
  • Rechargeable device, charger and charging system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] figure 1 A chargeable device of this embodiment is shown, which includes: a USB interface 11 and a charging setting module 12 . USB interface 11 is a 4pin USB interface, including VBUS (power line) pin, DM (data +) pin, DP (data -) pin and GND (ground) pin. Wherein, the VBUS pin is connected to the charging module in the rechargeable device, and the charging module includes relevant circuits required for charging the existing device, such as a voltage converter, a rechargeable battery, and the like. The DP pin is shorted. The GND pin is grounded. The DM pin is connected with the charging setting module 12 . The charging setting module 12 sends the first signal and receives the second signal through the DM pin to realize the interaction with the charger. The first signal may be a current signal for controlling the charger. The second signal may be a voltage signal, which is used to feed back whether the first signal is responsive to the control of the charger. Sinc...

Embodiment 2

[0109] image 3 A charger of this embodiment is shown. It includes: a USB interface 21 and a charging detection module 22 . The USB interface 21 is a 4pin USB interface, including a VBUS pin, a DM pin, a DP pin and a GND pin. Among them, the VBUS pin is connected to the adapter or power plug in the charger, or related circuits required for charging other devices. The DP pin is shorted. The GND pin is grounded. The DM pin is connected with the charging detection module 22 . The charging detection module 22 receives the first signal and sends the second signal through the DM pin to realize the interaction with the rechargeable device. The first signal may be a current signal for controlling the charger. The second signal may be a voltage signal, which is used to feed back whether the first signal is responsive to the control of the charger. Since the first signal and the second signal are both analog signals, the generation and detection of the first signal and the second...

Embodiment 3

[0130] A charging system includes a compatible rechargeable device and a charger. The USB interface of the rechargeable device and the USB interface of the charger are connected through a USB cable, and the analog signal interaction is performed through the DM pins of the respective USB interfaces.

[0131] The rechargeable device adopts the structure of embodiment 1, and the charger adopts the structure of embodiment 2. It should be noted that the compatible rechargeable device and the charger have the same corresponding table in advance, which can analyze the current value and voltage value on the DM pin, have the same number of comparators, and the threshold voltage of the comparators is the same .

[0132] Combine below figure 2 The process of interaction between the rechargeable device and the charger in this embodiment is described in detail:

[0133]In the figure, the rechargeable device has 4 current sources I1, I2, I3, I4, corresponding switches S1, S2, S3, S4 and...

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Abstract

The invention discloses a rechargeable device, a charger and a charging system. The rechargeable device includes: a USB interface, the USB interface including a DM pin; a current output circuit whichis used for outputting a first signal to the DM pin, wherein the first signal is a current signal and is used for controlling the charger; a first control logic unit which is used for controlling thecurrent value of the first signal; a voltage detection circuit which is used for detecting a second signal on the DM pin, wherein the second signal is a voltage signal and is used for feeding back whether the control of the first signal to the charger is responded or not; and a second control logic unit which is used for identifying the second signal by judging the voltage interval in which the voltage is located. The rechargeable device and the charger can perform analog signal interaction through the DM pin of the USB interface, particularly, the charger can make a corresponding feedback signal after receiving the signal indication of the rechargeable device, the rechargeable device can know the state of the charger through the feedback signal, and the charger does not need to be detected.

Description

technical field [0001] The invention belongs to the technical field of charging, and in particular relates to a rechargeable device, a charger and a charging system. Background technique [0002] It is already a very common charging technology for a charger to charge a mobile phone, a tablet computer or other electronic devices through a USB interface. At present, during the charging process of the charger, the charger and the mobile phone are relatively independent. The charger boosts and adjusts the voltage according to the charging requirements, and the mobile phone relies on its own internal voltage detection circuit to detect the input voltage and then adjust it. For fine stepping, the mobile phone needs multiple detections, the boost time is long, and the software process is cumbersome. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defect that the mobile phone needs to rely on its own internal volta...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0036H02J7/0045H02J7/007
Inventor 房柏阳
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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