Power detecting circuit and method, and audio device
A power detection and circuit technology, applied in the measurement of electrical variables, measuring power, measuring devices, etc., can solve the problems of inaccurate power display, high cost, and large voltage drop inside the battery.
Active Publication Date: 2019-03-08
MOBVOI INFORMATION TECH CO LTD
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Accurately detecting and displaying the remaining power of the built-in battery is very important for electronic products powered by the built-in battery. The existing power detection method includes setting the fuel gauge chip to detect the battery's outflow power in real time to obtain the remaining power. This method needs to be specific to different batteries. It is expensive to set up a special fuel gauge chip; and to read the battery voltage during the battery power supply process. However, for products with high operating current such as speakers, the internal voltage drop of the battery caused by the large current is large, and it is difficult to read The battery supply voltage gets accurate remaining power, resulting in inaccurate power display
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0041] The embodiments of the present invention will be further described in detail below in conjunction with the drawings and embodiments.
[0042] like figure 1 As shown, on the one hand, the embodiment of the present invention provides a power detection circuit 1, the circuit includes:
[0043] The first power supply branch 11, the detection module 12 and the processing module 13,
[0044] Both ends of the first power supply branch 11 are respectively connected to the power supply port VBAT and the electrical equipment port Vsystem, and the first power supply branch 11 is provided with a voltage dividing resistor (not shown in the figure);
[0045] The detection module 12 is connected to the first power supply branch 11, and is used to detect the current value of the first power supply branch 11 and the power supply voltage of the power supply port VBAT, and send it to the processing module 13;
[0046] The processing module 13 is connected to the detection module 12, and...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The embodiment of the invention discloses a power detecting circuit and method, and an audio device, and relates to the field of electronic devices. The main purpose of the invention is to obtain theinternal voltage drop of the power source by detecting the power supply current of the power source and obtain the actual power supply voltage of the power source in combination with the power supplyvoltage, thereby obtaining an accurate remaining power of the power supply. The main technical solution of the embodiment of the invention comprises a power detecting circuit, the circuit includes a first power supply branch, a detecting module, and a processing module, the two ends of the first power supply branch are respectively connected to a power port and a power consumption device port, thefirst power supply branch is provided with a voltage dividing resistor; the detecting module is configured to detect the current value of the first power supply branch and the power supply voltage ofthe power port and send the current value and the power supply voltage to the processing module; and the processing module is configured to determine the remaining power of the power supply accordingto the current value and the power supply voltage. The embodiment of the invention is mainly used for displaying the remaining power.
Description
technical field [0001] The embodiments of the present invention relate to the field of electronic equipment, and in particular to a power detection circuit, method and audio equipment. Background technique [0002] With the popularization of electronic products, the types of electronic products become more and more diversified, among which, electronic devices with built-in batteries have received more and more attention due to their advantages such as portability. [0003] Accurately detecting and displaying the remaining power of the built-in battery is very important for electronic products powered by the built-in battery. The existing power detection method includes setting the fuel gauge chip to detect the battery's outflow power in real time to obtain the remaining power. This method needs to be specific to different batteries. It is expensive to set up a special fuel gauge chip; and to read the battery voltage during the battery power supply process. However, for produ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01R31/385
Inventor 孟德成
Owner MOBVOI INFORMATION TECH CO LTD