A battery level display device
A technology for displaying device and battery power, applied to battery circuit devices, measuring devices, circuit devices, etc., which can solve problems such as cumbersome operation steps, mechanical loss of power buttons, and waste of user time
Active Publication Date: 2018-03-02
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology
However, in practical application scenarios, for example: the user needs to carry a headphone power amplifier to listen to music on a long-distance car, and needs to replace the battery before leaving, and check whether the newly replaced battery has enough power for use during the journey. The method described above is used to check, and when the remaining power of several batteries does not meet the user's requirements, there will be a phenomenon of frequently pressing the power button to start and shut down the battery to replace the battery, resulting in power failure. The mechanical loss of the buttons, and the operation steps are cumbersome, which wastes the user's time
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[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0022] Please also refer to figure 1 and figure 2 , figure 1 It is a schematic structural diagram of a battery power display device provided by an embodiment of the present invention, figure 2 It is a schematic diagram of a circuit principle of a battery power display device provided by an embodiment of the present invention.
[0023] It should be noted that the battery power display device provided by the embodiment of the present invention ...
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An embodiment of the invention discloses a battery electric quantity display device. The battery electric quantity display device comprises a battery detecting unit, a control unit and a battery electric quantity display unit, wherein the battery detecting unit is used for supplying power for the control unit when battery connection is detected and detecting the residual electric quantity information of the battery; the control unit is electrically connected with the battery detecting unit and used for receiving the electric energy output by the battery and the residual electric quantity information of the battery and generating a control signal according to the residual electric quantity information of the battery; the electric quantity display unit is electrically connected with the control unit and used for displaying the residual electric quantity of the battery under the control of the control signal. By the battery electric quantity display device, whether the battery is successfully connected or not can be indicated when the battery is inserted into an earphone power amplifier, and the residual electric quantity of the battery is displayed as user's reference when the battery is successfully connected.
Description
technical field [0001] The invention relates to the field of earphone power amplifiers, in particular to a battery power display device in the earphone power amplifier. Background technique [0002] In order to obtain better low-frequency response, some mid-to-high-end earphones often adopt high-density coil and long-stroke design, so that the impedance of the earphones will be as high as 200-600 ohms, and ordinary portable audio-visual equipment will double when encountering such high-impedance earphones. Reduce the output power and destroy the frequency response curve, affecting the performance of the earphones. The headphone power amplifier (referred to as: headphone amplifier or headphone amplifier) is designed for these high-impedance mid-to-high-end headphones. Adding a headphone power amplifier between the sound source and the earphones can increase the output power of the sound source, improve the sound quality, adjust the tone direction of the system, and give fu...
Claims
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IPC IPC(8): H02J7/00G01R31/36H01M10/48H05B37/02
CPCY02E60/10
Inventor 苏上丁
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD