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
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Example Embodiment
[0075]Example 1
[0076]figure 1 A rechargeable 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. Among them, the VBUS pin is connected to the charging module in the rechargeable device, and the charging module includes related circuits required for charging the existing device, such as a voltage converter, a rechargeable battery, etc. The DP pin is shorted. The GND pin is grounded. The DM pin is connected to the charging setting module 12. The charging setting module 12 sends the first signal and receives the second signal through the DM pin, so as to realize the interaction with the charger. The first signal may be a current signal, which is used to control the charger. The second signal may be a voltage signal, which is used to feed back whether the control of the charger by the first signal is respon...
Example Embodiment
[0108]Example 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 VBUS pin, DM pin, DP pin and 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 to the charging detection module 22. The charging detection module 22 receives the first signal and sends the second signal through the DM pin, so as to realize the interaction with the rechargeable device. The first signal may be a current signal, which is used to control the charger. The second signal may be a voltage signal, which is used to feed back whether the control of the charger by the first signal is responsive. Since the first signal and the second signal are both analog signals, the generation and detection of the first signal and the s...
Example Embodiment
[0129]Example 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 pin of the respective USB interface.
[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 charger have the same correspondence table pre-stored, which can analyze the current value and voltage value on the DM pin, have the same number of comparators, and the threshold voltages of the comparators are the same .
[0132]Combine belowfigure 2 The process of interaction between the rechargeable device and the charger in this embodiment is specifically described:
[0133]In the figure, the rechargeable device has 4 current sources I1, I2, I3, I4, corresponding switches S1, S2, S3, S4 and 4 compa...
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