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Rechargeable devices, chargers and charging systems

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

Active Publication Date: 2021-04-23
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 devices, chargers and charging systems
  • Rechargeable devices, chargers and charging systems
  • Rechargeable devices, chargers and charging systems

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, and the USB interface includes a DM pin; a current output circuit is used to output a first signal to the DM pin, and the first signal is a current signal, which is used to control the charger; a first control logic unit , used to control the current value of the first signal; the voltage detection circuit is used to detect the second signal on the DM pin, the second signal is a voltage signal, used to feedback whether the control of the charger by the first signal is responded; the second The control logic unit is used for identifying the second signal by judging the voltage interval in which the voltage is located. The rechargeable device and the charger of the present invention can interact with analog signals through the DM pin of the USB interface, especially the charger can make a corresponding feedback signal after receiving the signal indication of the rechargeable device, and the rechargeable device can pass The feedback signal knows the status of the charger, and there is no need to detect the charger.

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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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0036H02J7/0045H02J7/007
Inventor 房柏阳
Owner SPREADTRUM COMM (SHANGHAI) CO LTD