Electronic device, charging control method, device and power supply management chip
A technology for power management chips and electronic equipment, applied in battery circuit devices, secondary battery charging/discharging, circuit devices, etc., can solve the problems of high power consumption, large current of radio frequency units, and reduced battery life, so as to improve battery life. The effect of reducing power and power consumption
Inactive Publication Date: 2020-04-21
LENOVO (BEIJING) CO LTD
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Problems solved by technology
In the related art, since the nominal voltage of the radio frequency unit in the electronic equipment system is 3.7V, and the voltage when the lithium-ion battery is fully charged is about 4.2 volts (V, voltage), the lithium-ion battery directly supplies power to the electronic equipment system, making The current of the radio frequency unit is large, and the corresponding power consumption is also large, which reduces the battery life
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[0026] In order to make the purpose, technical solutions and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings. All other embodiments obtained under the premise of creative labor belong to the scope of protection of this application.
[0027] In the following description, references to "some embodiments" describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or a different subset of all possible embodiments, and Can be combined with each other without conflict.
[0028] If there is a similar description of "first\second\third" in the application documents, add the following explanation. In the following description, the term "first\second\third" is only to distinguish similar Objects do not represent a specific order for objects. It is understandable that "first\second\third" can be exchanged for a specific order or sequence ...
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The embodiment of the invention discloses an electronic device, a charging control method, a charging control device and a power supply management chip. The electronic device comprises a battery, a charging interface connected with the adapter of the electronic device, and a power supply management chip; the power supply management chip is used for controlling the adapter to charge the battery andcontrolling the adapter to supply power to the electronic device system if the charging interface is connected with the adapter; if the voltage of the battery is higher than a first threshold voltageand the charging interface is not connected with the adapter, the power supply management chip is used for controlling the battery to supply power to the electronic device system under the conditionthat the voltage of the battery is reduced to the first threshold voltage.
Description
technical field [0001] The present invention relates to the field of electronic equipment, and relates to but not limited to an electronic equipment, a charging control method, a device, and a power management chip. Background technique [0002] With the rapid development of the electronics industry, more and more electronic products are flooding people's lives, most of which use rechargeable batteries as power sources to power the electronic products. Lithium-ion batteries have the advantages of high energy density, small size, light weight, no memory effect, many rechargeable times, long service life, and low price. They are very suitable as power supplies for electronic products. In the related art, since the nominal voltage of the radio frequency unit in the electronic equipment system is 3.7V, and the voltage when the lithium-ion battery is fully charged is about 4.2 volts (V, voltage), the lithium-ion battery directly supplies power to the electronic equipment system, ...
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Login to View More IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/44H02J7/0063H02J7/0068Y02E60/10
Inventor 聂剑
Owner LENOVO (BEIJING) CO LTD