CN216599120U - Power supply self-switching circuit system - Google Patents
Power supply self-switching circuit system Download PDFInfo
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- CN216599120U CN216599120U CN202123231567.4U CN202123231567U CN216599120U CN 216599120 U CN216599120 U CN 216599120U CN 202123231567 U CN202123231567 U CN 202123231567U CN 216599120 U CN216599120 U CN 216599120U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model particularly relates to a power supply self-switching circuit system. In the power supply self-switching circuit system, a battery power supply VCC _ BAT is connected to a system power supply input VCC _ OUT through a Schottky diode D1, a resistor R1, a resistor R2 and a P-type MOS transistor Q2; an external power supply VCC _ IN is connected to a system power supply input VCC _ OUT through a Schottky diode D2 and is connected to a P-type MOS transistor Q2 through a PNP triode Q1; when the battery power supply VCC _ BAT is at a high level and the external power supply VCC _ IN is at a low level, the PNP triode Q1 and the P-type MOS transistor Q2 are both IN a conducting state, and the battery power supply VCC _ BAT supplies power to the system power supply input VCC _ OUT; when the battery power supply VCC _ BAT and the external power supply VCC _ IN are both at a high level, the PNP triode Q1 and the P-type MOS transistor Q2 are both IN a cut-off state, and the external power supply VCC _ IN supplies power to the battery power supply VCC _ BAT and the system power supply input VCC _ OUT. The power self-switching circuit system uses the battery as the power supply of the electronic equipment when the external power supply is not connected, and the external power supply is used for charging the battery and also used as the power supply of the electronic equipment when the external power supply is connected.
Description
Technical Field
The utility model relates to the technical field of multi-power input management, in particular to a power supply self-switching circuit system.
Background
Currently, mobile electronic devices are widely used in various industries, so that battery powered systems are increasingly used. In practical applications, customers often put forward such a demand: when the device is not connected with an external power supply, the battery is used as a main power supply of the whole device; when connected, the external power source is used both to charge the battery and as the primary power source for the system.
For example, in the mobile robot industry, robots are often equipped with a set of batteries. When the robot works movably, the battery is used as a main power supply, and when the battery of the robot is dead and the robot system is needed to work, an external power supply is required to be connected, and the connected external power supply is the main power supply of the robot.
In order to realize the switching between a battery power supply and an external power supply, the utility model provides a power supply self-switching circuit system.
Disclosure of Invention
In order to make up for the defects of the prior art, the utility model provides a simple and efficient power supply self-switching circuit system.
The utility model is realized by the following technical scheme:
a power self-switching circuitry, comprising: the system comprises a battery power supply VCC _ BAT, an external power supply VCC _ IN and a system power supply input VCC _ OUT;
the battery power supply VCC _ BAT is connected to a system power supply input VCC _ OUT through a Schottky diode D1, a resistor R1, a resistor R2 and a P-type MOS transistor Q2;
the external power supply VCC _ IN is connected to a system power supply input VCC _ OUT through a Schottky diode D2 and is connected to a P-type MOS transistor Q2 through a PNP triode Q1;
when the battery power supply VCC _ BAT is at a high level and the external power supply VCC _ IN is at a low level (i.e., no external power supply is connected IN practical application), the PNP triode Q1 and the P-type MOS transistor Q2 are both IN a conducting state, i.e., a line between the battery power supply VCC _ BAT and the system power supply input VCC _ OUT is IN a conducting state, and the battery power supply VCC _ BAT supplies power to the system power supply input VCC _ OUT;
when the battery power supply VCC _ BAT and the external power supply VCC _ IN are both high levels (i.e., the external power supply is connected IN practical application), the PNP triode Q1 and the P-type MOS transistor Q2 are both IN a cut-off state, i.e., a line between the battery power supply VCC _ BAT and the system power supply input VCC _ OUT is IN a cut-off state, and the external power supply VCC _ IN supplies power to the battery power supply VCC _ BAT and the system power supply input VCC _ OUT.
The external power supply VCC _ IN is connected to the base B of the PNP triode Q1, and is connected to the gate G of the P-type MOS transistor Q2 through the emitter E of the PNP triode Q1.
The battery power source VCC _ BAT is directly connected to the drain D of the P-type MOS transistor Q2, connected to the gate G of the P-type MOS transistor Q2 through the resistor R1, and connected in series with the Schottky diode D1 and the resistor R2 and then also connected to the gate G of the P-type MOS transistor Q2.
The collector C of the PNP triode Q1 is grounded.
The external power source VCC _ IN is grounded through a resistor R3.
The utility model has the beneficial effects that: the power supply self-switching circuit system realizes multi-power supply switching input, when the electronic equipment is not connected with an external power supply, the battery is used as the power supply of the electronic equipment, and when the external power supply is connected, the external power supply is used for charging the battery and also used as the power supply of the electronic equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a power supply self-switching circuit according to the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the embodiment of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The power supply self-switching circuit system comprises a battery power supply VCC _ BAT, an external power supply VCC _ IN and a system power supply input VCC _ OUT;
the battery power supply VCC _ BAT is connected to a system power supply input VCC _ OUT through a Schottky diode D1, a resistor R1, a resistor R2 and a P-type MOS transistor Q2;
the external power supply VCC _ IN is connected to a system power supply input VCC _ OUT through a Schottky diode D2 and is connected to a P-type MOS transistor Q2 through a PNP triode Q1;
when the battery power supply VCC _ BAT is at a high level and the external power supply VCC _ IN is at a low level (i.e., no external power supply is connected IN practical application), the PNP triode Q1 and the P-type MOS transistor Q2 are both IN a conducting state, i.e., a line between the battery power supply VCC _ BAT and the system power supply input VCC _ OUT is IN a conducting state, and the battery power supply VCC _ BAT supplies power to the system power supply input VCC _ OUT;
when the battery power supply VCC _ BAT and the external power supply VCC _ IN are both high levels (i.e., the external power supply is connected IN practical application), the PNP triode Q1 and the P-type MOS transistor Q2 are both IN a cut-off state, i.e., a line between the battery power supply VCC _ BAT and the system power supply input VCC _ OUT is IN a cut-off state, and the external power supply VCC _ IN supplies power to the battery power supply VCC _ BAT and the system power supply input VCC _ OUT.
The external power supply VCC _ IN is connected to the base B of the PNP triode Q1, and is connected to the gate G of the P-type MOS transistor Q2 through the emitter E of the PNP triode Q1.
The battery power source VCC _ BAT is directly connected to the drain D of the P-type MOS transistor Q2, connected to the gate G of the P-type MOS transistor Q2 through the resistor R1, and connected in series with the Schottky diode D1 and the resistor R2 and then also connected to the gate G of the P-type MOS transistor Q2.
The collector C of the PNP triode Q1 is grounded.
The external power source VCC _ IN is grounded through a resistor R3.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A power self-switching circuitry, comprising: the system comprises a battery power supply VCC _ BAT, an external power supply VCC _ IN and a system power supply input VCC _ OUT;
the battery power supply VCC _ BAT is connected to a system power supply input VCC _ OUT through a Schottky diode D1, a resistor R1, a resistor R2 and a P-type MOS transistor Q2;
the external power supply VCC _ IN is connected to a system power supply input VCC _ OUT through a Schottky diode D2 and is connected to a P-type MOS transistor Q2 through a PNP triode Q1;
when the battery power supply VCC _ BAT is at a high level and the external power supply VCC _ IN is at a low level, the PNP triode Q1 and the P-type MOS transistor Q2 are both IN a conducting state, namely, a circuit between the battery power supply VCC _ BAT and the system power supply input VCC _ OUT is IN a conducting state, and the battery power supply VCC _ BAT supplies power to the system power supply input VCC _ OUT;
when the battery power supply VCC _ BAT and the external power supply VCC _ IN are both at a high level, the PNP triode Q1 and the P-type MOS transistor Q2 are both IN an off state, that is, a line between the battery power supply VCC _ BAT and the system power supply input VCC _ OUT is IN an off state, and the external power supply VCC _ IN supplies power to the battery power supply VCC _ BAT and the system power supply input VCC _ OUT.
2. The power self-switching circuitry of claim 1, wherein: the external power supply VCC _ IN is connected to the base B of the PNP triode Q1, and is connected to the gate G of the P-type MOS transistor Q2 through the emitter E of the PNP triode Q1.
3. The power self-switching circuitry of claim 2, wherein: the battery power source VCC _ BAT is directly connected to the drain D of the P-type MOS transistor Q2, connected to the gate G of the P-type MOS transistor Q2 through the resistor R1, and connected in series with the Schottky diode D1 and the resistor R2 and then also connected to the gate G of the P-type MOS transistor Q2.
4. The power self-switching circuitry of claim 2, wherein: the collector C of the PNP triode Q1 is grounded.
5. The power self-switching circuitry of claim 4, wherein: the external power source VCC _ IN is grounded through a resistor R3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123231567.4U CN216599120U (en) | 2021-12-21 | 2021-12-21 | Power supply self-switching circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123231567.4U CN216599120U (en) | 2021-12-21 | 2021-12-21 | Power supply self-switching circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216599120U true CN216599120U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123231567.4U Active CN216599120U (en) | 2021-12-21 | 2021-12-21 | Power supply self-switching circuit system |
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| Country | Link |
|---|---|
| CN (1) | CN216599120U (en) |
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2021
- 2021-12-21 CN CN202123231567.4U patent/CN216599120U/en active Active
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| GR01 | Patent grant | ||
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Effective date of registration: 20230805 Address after: 250100 West District, North First Floor, S06 Building, 1036 Langchao Road, Jinan High-tech Zone, Shandong Province Patentee after: Shandong Inspur Ultra HD Video Industry Co.,Ltd. Address before: 11-12 / F, building 3, future venture Plaza, north section of Gangxing Third Road, high tech Zone, Jinan City, Shandong Province, 250100 Patentee before: Shandong new generation Information Industry Technology Research Institute Co.,Ltd. |
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| TR01 | Transfer of patent right |