A kind of power supply and its power supply circuit
A power supply circuit and charging voltage technology, which is applied in the direction of high-efficiency power electronic conversion, electrical components, and adjustment of electrical variables, can solve the problems of low efficiency and stability of ACDC power supply systems
Active Publication Date: 2020-08-25
BYD SEMICON CO LTD
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] The purpose of the present invention is to provide a power supply and its power supply circuit, aiming to solve the problems of low efficiency and stability in the existing ACDC power supply system
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
[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0025] The realization of the present invention is described in detail below in conjunction with specific accompanying drawing:
[0026] Figure 4 The module structure of the power supply circuit provided by an embodiment of the present invention is shown. For the convenience of description, only the parts related to this embodiment are shown, and the details are as follows:
[0027] Such as Figure 4 As shown, the power supply circuit provided by the embodiment of the present invention is used to charge electric equipment, which includes a rectifier bridge 10, a transformer 20, a primary control...
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 belongs to the technical field of power supplies and provides a power supply and a power supply circuit thereof. In the present invention, by setting the secondary control chip including the power supply bias module, the opening detection module, the closing detection module, the control module, the driving module, the output voltage detection module and the threshold value processing module in the power circuit, the secondary rectification switch When the tube performs secondary rectification on the output of the transformer, the control module controls the driving module to turn on the secondary rectification switch tube according to the detection result of the opening detection module, and the control module also controls the driving module to turn off the secondary rectification switching tube according to the detection result of the closing detection module , so as to realize the conduction and shutdown of the secondary rectifier switch tube, and when the secondary rectifier switch tube is closed, the threshold value processing module adjusts the shutdown voltage threshold of the shutdown detection module according to the detection result of the output voltage detection module, so that the secondary The rectifier switching tube realizes "0" current shutdown, thereby improving the efficiency and stability of the power supply circuit.
Description
technical field [0001] The invention belongs to the technical field of power supplies, and in particular relates to a power supply and a power supply circuit thereof. Background technique [0002] In order to solve the defect of low charging power of the traditional low-power AC-DC (ACDC) power supply, the prior art proposes an ACDC power supply system that increases the charging power and speed by increasing the output voltage, such as figure 1 The ACDC power supply system shown has an output voltage range up to 12V, or even greater. Such as figure 1 As shown, the ACDC power supply system is mainly composed of rectifier bridge, transformer primary winding, secondary winding, feedback winding, primary control IC, power switching device, primary current detection resistor R4, feedback rectifier diode D1, feedback voltage detection resistors R2 and R3 , secondary rectifier diode D2 and capacitors. In this ACDC power supply system, since the secondary of the transformer is r...
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): H02M3/335H02M7/04
CPCH02M3/33576H02M7/04H02M1/0058Y02B70/10
Inventor 傅平王文情
Owner BYD SEMICON CO LTD