Method for reducing energy consumption of charger in standby mode, charging circuit and charger
A charging circuit and standby state technology, applied to battery circuit devices, current collectors, circuit devices, etc., can solve problems such as unfavorable energy saving and energy consumption of chargers
Active Publication Date: 2015-01-21
SHANGHAI SHIFT ELECTRIC CO LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0014] However, for this type of low-power charger, when it is in a standby state (that is, not charging), the charger still consumes energy, and the current commercially available chargers consume basically the same energy regardless of whether they are charging or not, which also Bad for saving energy
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
[0068] As mentioned above, according to the present invention, P=UI COSΦ, where U is the AC power supply voltage, and I is the current of the AC power supply flowing into the charger. It is generally considered that the change of the mains power supply can be ignored, so it can be considered that U and I are constant, so By changing COSΦ, P can be changed.
[0069] As an example, Figure 4 The charging circuit of the present invention is schematically shown, which includes a charger part G and an electrical appliance part Y, and the charger part G includes: a step-down part 5, a protection circuit 6, a rectification part 7, a filter part 8, an oscillation part 9, The consumer part Y includes an induction part 10 and a charging part 11 of the consumer. The AC voltage (such as 230V or 120V) from the mains is sequentially passed through the step-down part 5, the rectification part 7 and the filter part 8 to output a DC voltage, and the DC voltage signal is input into the oscilla...
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 invention discloses a method for reducing energy consumption of a charger in a standby mode. The method comprises the following steps of: providing a charging circuit comprising a charger part and an electric appliance part; leading a resistor in a positive feedback circuit of a charging oscillation part according to P=U(1S)I(1S)COSphi when the U(1S) and I(1S) are basically invariable, adjusting a no-load alternating current equivalent resistance value detected from an input end of the oscillation part, so that the no-load alternating current equivalent resistance value is smaller than a direct current equivalent resistance value detected from the input end, and a load alternating current equivalent resistance value is close to or is greater than the direct current equivalent resistance value; and therefore, when the charger part is connected with a load, the alternating current power factor COSphi negative is at least 1.2 times the alternating current power factor COSphi idle during no-load. The invention also discloses a corresponding charging circuit and a charger. When the voltage of the charger obtained by the method is 230V, the no-load power is 0.39w, the current is 16.1mA, and the power factor is 0.106, the load power is 0.95w, the current is 14.9mA, the power factor is 0.275, and the charging current of a rechargeable battery is 51.1mA; and when the voltage of the charger obtained by the method is 120V, the no-load power is 0.28w, the current is 17.3mA, and the power factor is 0.134, the load power is 0.65w, the current is 14.7mA, the power factor is 0.369, and the charging current of a rechargeable battery is 42mA.
Description
technical field [0001] The present invention relates to a method for reducing the energy consumption of a charger in a standby state, a charging circuit and a charger, and more particularly, relates to a method for reducing the energy consumption of a portable electric appliance for personal use such as a toothbrush, a shaving device or a hair removal device. A method for energy consumption of a charger (hereinafter referred to as an electrical appliance), a charging circuit for reducing energy consumption of a charger in a standby state, and a charger thereof. Background technique [0002] A charger generally refers to a device that converts alternating current to low voltage direct current. Chargers are widely used in various fields, especially in the field of life, such as toothbrushes, shaving devices or hair removal devices, mobile phones, cameras and other portable personal appliances. [0003] It is well known that low-power chargers for electrical appliances such as...
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 Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/10
Inventor 戴晓国徐振武温兵
Owner SHANGHAI SHIFT ELECTRIC CO LTD