Power supply circuit and charging method for electronic equipment
A technology for power supply circuits and electronic equipment, applied to battery circuit devices, circuit devices, current collectors, etc., can solve problems such as user inconvenience, electronic equipment cannot be used, and electronic equipment cannot be turned on and used normally, so as to achieve the effect of accelerating the charging speed
Inactive Publication Date: 2011-10-19
LEADCORE TECH
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Problems solved by technology
[0006] To sum up, if the rechargeable battery of the electronic device is over-discharged, it must be pre-charged during the charging process. In the pre-charged state of the rechargeable battery, the electronic device cannot be turned on normally. Electronic equipment cannot be used for a long time due to pre-charging, causing inconvenience to users
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[0025] The electronic device power supply circuit and charging method of the present invention will be further described in detail with reference to the accompanying drawings.
[0026] see figure 2 , The electronic device power supply circuit of the present invention includes a charger 10 , a charging chip 12 , a battery 13 , a switch 14 , a power management unit 15 , a control unit 16 , a voltage regulator 17 and an electronic device 18 .
[0027] The output terminal of the charger 10 is pluggably connected to the charging chip 12 to provide power for the charging chip 12 . Meanwhile, the output terminal of the charger 10 is connected to the input terminal of the voltage regulator 17 , and the output terminal of the voltage regulator 17 is connected to the input terminal of the power management unit 15 . The output end of the charging chip 12 is connected to the battery 13 and the switch 14 at the same time, and provides charging power to the battery 13 and the switch 14 . ...
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The invention provides a power supply circuit and a charging method for electronic equipment, relating to the field of charging technology. The power supply circuit comprises a charger, a charging chip, a battery and a power management unit, wherein the charger is connected to the charging chip in a pluggable way; the battery can be charged by the charging chip; the battery can supply power to the electronic equipment by the power management unit; the circuit further comprises a voltage stabilizer, a switch and a control unit; the voltage stabilizer is connected to the input terminal of the charging chip and the input terminal of the power management unit; the switch is connected between the output terminal of the charging chip and the input terminal of the power management unit; one end of the control unit is connected to the input terminal of the charging chip; the other end of the control unit is connected to the switch; when the control unit detects that the charger is connected to the charging chip, the control switch is in an open circuit state; and when the control unit detects that the input terminal of the charging chip is not connected to the charger, the control switch is in a conducted state.
Description
technical field [0001] The invention relates to charging technology, in particular to a power supply circuit and a charging method for electronic equipment. Background technique [0002] Current electronic devices (MP3, MP4, PDA, mobile phones, etc.) are all powered by batteries. However, when the battery is over-discharged, that is, when the battery voltage is lower than the start-up voltage of the electronic device, the electronic device cannot be started. After that, the electronic device can be turned on. [0003] In the prior art, the power supply circuit of electronic equipment such as figure 1 As shown, the power supply circuit includes a charger, a charging chip, a rechargeable battery and a power management unit. The charger is connected to the input terminal of the charging chip, and the output terminal of the charging chip is connected to the battery and simultaneously connected to the input terminal of the power management unit. [0004] When the rechargeable...
Claims
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IPC IPC(8): H02J7/00
Inventor 朱建荣管华军
Owner LEADCORE TECH