CN114899788B - Power supply control method and electronic equipment - Google Patents
Power supply control method and electronic equipment Download PDFInfo
- Publication number
- CN114899788B CN114899788B CN202210533569.9A CN202210533569A CN114899788B CN 114899788 B CN114899788 B CN 114899788B CN 202210533569 A CN202210533569 A CN 202210533569A CN 114899788 B CN114899788 B CN 114899788B
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- isolation
- slave
- reverse connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The application discloses a power supply control method and electronic equipment, and relates to the technical field of power supplies. A power supply control method is applied to a power supply control system, and the power supply control system comprises the following steps: a primary power supply circuit; the first slave power supply circuit is electrically connected with the master power supply circuit; the power supply control method comprises the following steps: connecting a first power supply to a main power supply circuit; and according to the accessed first power supply, the main-stage power supply circuit controls the first auxiliary-stage power supply circuit to be switched off. According to the scheme, the accessed power supply can be managed more safely, and the electronic equipment is effectively prevented from being burnt.
Description
Technical Field
The present application relates to the field of power supply technologies, and in particular, to a power supply control method and an electronic device.
Background
In the related art, in a modern society in which informatization is highly developed, human dependence on electronic devices is increasing. The power module, as an important component of the electronic device, is a key to smooth operation of the electronic device. At present, modern people have higher and higher requirements on electronic equipment due to living and working requirements. Therefore, notebook computers (including tablet computers), which are electronic devices used by people in daily life, have been required to have more functionality. Among these functional requirements, the power supply, as one of the cores of the notebook computer, is required to be able to operate stably, efficiently and safely. The problem of how to manage the power supply is caused, and the conventional power supply management method is easy to cause disordered power supply control due to improper management, and can cause sudden shutdown of the electronic equipment due to unstable power supply and burnout of the electronic equipment due to overhigh power supply current.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a power supply control method and electronic equipment, which can manage the accessed power supply more safely and effectively avoid the electronic equipment from being burnt.
The power supply control method according to the embodiment of the first aspect of the application is applied to a power supply control system, and the power supply control system comprises:
a primary power supply circuit;
a first slave power supply circuit electrically connected to the master power supply circuit;
the power supply control method comprises the following steps:
a first power supply is connected to the primary power supply circuit and is supplied with power through the primary power supply circuit;
when the first power supply is connected to the primary power supply circuit, the primary power supply circuit controls the first secondary power supply circuit to be switched off.
According to some embodiments of the present application, the power control system further comprises a second slave stage power supply circuit electrically connected to the master stage power supply circuit and the first slave stage power supply circuit, respectively;
the power supply control method further includes at least one of:
when the first power supply is connected to the primary power supply circuit, the secondary power supply circuit is controlled to be switched off by the primary power supply circuit;
when the first slave stage power supply circuit is connected with a second power supply, the first slave stage power supply circuit controls the second slave stage power supply circuit to be switched off.
According to some embodiments of the present application, the primary power supply circuit includes a first reverse connection prevention circuit and a first isolation control circuit, the first reverse connection prevention circuit being electrically connected to the first isolation control circuit, the first secondary power supply circuit, and the second secondary power supply circuit, respectively;
the connecting the first power supply to the primary power supply circuit and supplying power through the primary power supply circuit includes:
connecting the first power supply to the first anti-reverse connection circuit as an input voltage;
the first isolation control circuit is conducted through the output voltage of the first reverse connection preventing circuit;
the first power supply supplies power through the first isolation control circuit.
According to some embodiments of the present application, the first slave stage power supply circuit includes a second reverse connection prevention circuit and a second isolation control circuit, the second reverse connection prevention circuit is electrically connected to the second slave stage power supply circuit and the second isolation control circuit, respectively, and the first reverse connection prevention circuit is electrically connected to the second isolation control circuit;
when the first power supply is connected to the master power supply circuit, the master power supply circuit controls the first slave power supply circuit to be switched off, including:
and the second isolation control circuit is switched off through the output voltage of the first reverse connection preventing circuit.
According to some embodiments of the present application, the second slave stage power supply circuit includes a third prevention reverse connection circuit and a third isolation control circuit, the third prevention reverse connection circuit is electrically connected with the third isolation control circuit, and the third isolation control circuit is electrically connected with the second reverse connection prevention circuit and the first reverse connection prevention circuit, respectively;
when the first power supply is connected to the primary power supply circuit, the switching off of the second secondary power supply circuit is controlled by the primary power supply circuit, including:
and the third isolation control circuit is switched off through the output voltage of the first reverse connection preventing circuit.
According to some embodiments of the application, the controlling, by the first slave stage power supply circuit, the second slave stage power supply circuit to turn off when the first slave stage power supply circuit is connected to the second power supply includes:
and the third isolation control circuit is enabled by the turn-off of the output voltage of the second reverse-connection preventing circuit.
According to some embodiments of the present application, the first isolation control circuit comprises a first isolation circuit and a primary control circuit, the first isolation circuit being electrically connected to the first anti-reverse connection circuit and the primary control circuit, respectively;
the switching on the first isolation control circuit by the output voltage of the first reverse connection prevention circuit includes:
the main-stage control circuit is conducted through the output voltage of the first reverse-connection preventing circuit;
and the first isolation circuit is conducted through the conducted main-stage control circuit.
According to some embodiments of the present application, the second isolation control circuit includes a second isolation circuit and a first secondary control circuit, the second isolation circuit is electrically connected with the second reverse connection prevention circuit and the first secondary control circuit respectively, and the first secondary control circuit is electrically connected with the first reverse connection prevention circuit and the second reverse connection prevention circuit respectively;
the turning off of the second isolation control circuit by the output voltage of the first reverse connection prevention circuit includes:
the first slave stage control circuit is turned off through the output voltage of the first reverse connection prevention circuit;
and the second isolation circuit is switched off through the switched-off first slave stage control circuit.
According to some embodiments of the present application, the third isolation control circuit includes a third isolation circuit and a second slave control circuit, the third isolation circuit is electrically connected to the third anti-reverse connection circuit and the second slave control circuit respectively, and the second slave control circuit is electrically connected to the first anti-reverse connection circuit, the second anti-reverse connection circuit and the third anti-reverse connection circuit respectively;
the third isolation control circuit is turned off by the output voltage of the second reverse connection prevention circuit, and the third isolation control circuit includes:
turning off the second slave stage control circuit through an output voltage of the second reverse connection preventing circuit;
and the third isolation circuit is turned off through the second slave control circuit after being turned off.
According to the electronic device of the embodiment of the second aspect of the present application, the electronic device is used for executing the power control method of the embodiment of the first aspect.
According to the power supply control method provided by the embodiment of the application, the following beneficial effects are achieved: on the one hand, through being provided with primary power supply circuit, first secondary power supply circuit is connected with primary power supply circuit electricity, when primary power supply circuit inserts first power, primary power supply circuit can control first secondary power supply circuit and turn off, make first power supply alone supply power, at this moment, whether first secondary power supply circuit inserts the second power, can not supply power through the second power, impact to electronic equipment when effectively having completely cut off the second power and having supplied power simultaneously, electronic equipment that has avoided first power and second power to lead to burns out. On the other hand, a second slave power supply circuit is further arranged, the second slave power supply circuit is respectively electrically connected with the main power supply circuit and the first slave power supply circuit, and when the main power supply circuit is connected to the first power supply, the main power supply circuit controls the first slave power supply circuit and the second slave power supply circuit to be disconnected, so that the first power supply independently supplies power; or when the main-stage power supply circuit is not connected with the first power supply and the first slave-stage power supply circuit is connected with the second power supply, the first slave-stage power supply circuit controls the second slave-stage power supply circuit to be disconnected, so that the second power supply independently supplies power; in summary, by setting the priorities of the master power supply circuit, the first slave power supply circuit and the second slave power supply circuit, and setting the priority of the master power supply circuit to be highest, the priority of the first slave power supply circuit to be next to that of the second slave power supply circuit, when different power supplies are connected, the power supplies can be connected or isolated according to the set priority, so that the effective control of the power supplies is realized, the operation is convenient and safe, and the impact of a plurality of power supplies on the electronic equipment is effectively avoided. Therefore, the power supply control method can manage the accessed power supply more safely, and effectively avoids burning of the electronic equipment.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The present application is further described with reference to the following figures and examples, in which:
FIG. 1 is a flow chart of a power control method according to an embodiment of the present application;
FIG. 2 is a flowchart of a power control method according to another embodiment of the present disclosure;
FIG. 3 is a flowchart of a power control method according to another embodiment of the present application;
FIG. 4 is a functional block diagram of a power control system provided in one embodiment of the present application;
FIG. 5 is a circuit schematic of the primary power supply circuit shown in FIG. 4;
FIG. 6 is a circuit schematic of the first slave stage supply circuit shown in FIG. 4;
fig. 7 is a circuit schematic of the second slave supply circuit shown in fig. 4.
Reference numerals:
the circuit comprises a main power supply circuit 100, a first anti-reverse connection circuit 110, a first isolation control circuit 120, a first isolation circuit 121 and a main control circuit 122;
a first slave stage power supply circuit 200, a second isolation control circuit 210, a second isolation circuit 211, a first slave stage control circuit 212;
a second slave power supply circuit 300, a third isolation control circuit 310, a third isolation circuit 311, and a second slave control circuit 312.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it should be understood that the positional descriptions referred to, for example, the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present numbers, and larger, smaller, inner, etc. are understood as including the present numbers. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
A power supply control method according to an embodiment of the present application is described below with reference to fig. 1 to 7.
It is to be understood that, as shown in fig. 1 and 4, according to the power supply control method of the embodiment of the present application, the power supply control system includes:
a primary supply circuit 100;
a first slave power supply circuit 200, the first slave power supply circuit 200 being electrically connected to the master power supply circuit 100;
the power supply control method comprises the following steps:
a first power supply is connected to the primary power supply circuit 100 and is supplied with power through the primary power supply circuit 100;
when the first power supply is connected to the master power supply circuit 100, the first slave power supply circuit 200 is controlled to be turned off by the master power supply circuit 100.
Through being provided with primary power supply circuit 100, first secondary power supply circuit 200 is connected with primary power supply circuit 100 electricity, when primary power supply circuit 100 inserts first power, primary power supply circuit 100 can control first secondary power supply circuit 200 and turn off, make first power supply alone, at this moment, whether first secondary power supply circuit 200 inserts the second power, can not supply power through the second power, impact to electronic equipment when effectively having isolated the second power and having inserted, electronic equipment that has avoided first power and second power to supply power simultaneously and lead to burns out.
It is understood that, as shown in fig. 2, fig. 3 and fig. 4, the power control system further includes a second slave power supply circuit 300, and the second slave power supply circuit 300 is electrically connected to the master power supply circuit 100 and the first slave power supply circuit 200 respectively;
the power control method further comprises at least one of:
when the first power supply is connected to the primary power supply circuit 100, the secondary power supply circuit 300 is controlled to be turned off by the primary power supply circuit 100;
when the first slave stage power supply circuit 200 is connected to the second power supply, the second slave stage power supply circuit 300 is controlled to be switched off by the first slave stage power supply circuit 200.
It should be noted that, as shown in fig. 3, the first slave stage power supply circuit 200 is connected to the second power supply, and may be divided into two cases, one is that the first power supply is already connected before the second power supply is not connected, and then the second power supply is connected, although the first slave stage power supply circuit 200 and the second slave stage power supply circuit 300 are already turned off under the control of the master stage power supply circuit 100, after the second power supply is connected, the first slave stage power supply circuit 200 will control the second slave stage power supply circuit 300 to be turned off, that is, turned off again after being turned off, and the second slave stage power supply circuit 300 is still in the off state, and the first slave stage power supply circuit 200 does not work regardless of whether the second power supply is connected or not; in another case, when the first power supply is not connected to the primary power supply circuit 100 and the second power supply is connected, the first secondary power supply circuit 200 controls the second secondary power supply circuit 300 to be turned off, and at this time, the second secondary power supply circuit 300 does not work regardless of whether the third power supply is connected.
It can be understood that, as shown in fig. 5, the main stage power supply circuit 100 includes a first anti-reverse connection circuit 110 and a first isolation control circuit 120, and the first anti-reverse connection circuit 110 is electrically connected to the first isolation control circuit 120, the first slave stage power supply circuit 200, and the second slave stage power supply circuit 300, respectively;
the first power source is connected to the primary power supply circuit 100, and is supplied with power through the primary power supply circuit 100, including:
connecting a first power supply to a first anti-reverse connection circuit 110 as an input voltage;
the first isolation control circuit 120 is turned on by the output voltage of the first anti-reverse connection circuit 110;
the first power supply is powered by the first isolation control circuit 120.
It should be noted that, as shown in fig. 5, the output voltage of the first anti-reverse connection circuit 110 is + VADP, and the + VADP can turn on the first isolation control circuit 120, so that the first power supply supplies power to the electronic device.
It is understood that, as shown in fig. 5, the first isolation control circuit 120 includes a first isolation circuit 121 and a main control circuit 122, and the first isolation circuit 121 is electrically connected to the first anti-reverse connection circuit 110 and the main control circuit 122 respectively;
the first isolation control circuit 120 is turned on by the output voltage of the first reverse connection preventing circuit 110, and includes:
the primary control circuit 122 is turned on by the output voltage of the first anti-reverse connection circuit 110;
the first isolation circuit 121 is turned on by the turned-on main stage control circuit 122.
It should be noted that the output voltage + VADP of the first anti-reverse connection circuit 110 can turn on the Q21 of the main-stage control circuit 122, and further turn on the Q11 and the Q12, so as to turn on the first isolation circuit 121. Specifically, the output voltage + VADP passes through Q11 and Q12 in sequence to form another output voltage vcharger. Further, Q11, Q12 are QM3005M3, and Q21, Q22 are 2SK3019.
It can be understood that, as shown in fig. 6, the first slave stage power supply circuit 200 includes a second reverse connection prevention circuit and a second isolation control circuit 210, the second reverse connection prevention circuit is electrically connected with the second slave stage power supply circuit 300 and the second isolation control circuit 210 respectively, and the first reverse connection prevention circuit 110 is electrically connected with the second isolation control circuit 210;
when the first power supply is connected to the master power supply circuit 100, the switching off of the first slave power supply circuit 200 is controlled by the master power supply circuit 100, which includes:
the second isolation control circuit 210 is turned off by the output voltage of the first anti-reverse connection circuit 110.
It should be noted that, as shown in fig. 6, the output voltage + VADP of the first anti-reverse connection circuit 110 may cause the second isolation control circuit 210 to be turned off.
It can be understood that, as shown in fig. 6, the second isolation control circuit 210 includes a second isolation circuit 211 and a first slave control circuit 212, the second isolation circuit 211 is electrically connected with the second anti-reverse connection circuit and the first slave control circuit 212 respectively, and the first slave control circuit 212 is electrically connected with the first anti-reverse connection circuit 110 and the second anti-reverse connection circuit respectively;
turning off the second isolation control circuit 210 by the output voltage of the first anti-reverse connection circuit 110 includes:
the first slave stage control circuit 212 is turned off by the output voltage of the first anti-reverse connection circuit 110;
the second isolation circuit 211 is turned off by the first slave stage control circuit 212 after being turned off.
It should be noted that the output voltage + VADP of the first anti-reverse connection circuit 110 can turn on the Q24 of the first slave stage control circuit 212, turn off the Q23, turn off the Q13 and the Q14, and finally turn off the second isolation circuit 211. Further, Q13 and Q14 are QM3005M3, and Q23 and Q24 are 2SK3019.
It can be understood that, as shown in fig. 7, the second slave stage power supply circuit 300 includes a third anti-reverse connection circuit and a third isolation control circuit 310, the third anti-reverse connection circuit is electrically connected to the third isolation control circuit 310, and the third isolation control circuit 310 is electrically connected to the second anti-reverse connection circuit and the first anti-reverse connection circuit 110, respectively;
when the first power supply is connected to the master power supply circuit 100, the second slave power supply circuit 300 is controlled to be turned off by the master power supply circuit 100, which includes:
the third isolation control circuit 310 is turned off by the output voltage of the first anti-reverse connection circuit 110.
It should be noted that, as shown in fig. 7, the output voltage + VADP of the first anti-reverse connection circuit 110 may cause the third isolation control circuit 310 to be turned off.
It can be understood that, as shown in fig. 7, when the first slave stage power supply circuit 200 is connected to the second power supply, the controlling, by the first slave stage power supply circuit 200, the second slave stage power supply circuit 300 to be turned off includes:
the third isolation control circuit 310 is turned off by the output voltage of the second anti-reverse connection circuit.
It should be noted that, as shown in fig. 7, the output voltage TYPE-C/TBT1 of the second anti-reverse connection circuit can cause the third isolation control circuit 310 to be turned off.
It can be understood that, as shown in fig. 7, the third isolation control circuit 310 includes a third isolation circuit 311 and a second secondary control circuit 312, the third isolation circuit 311 is electrically connected to the third anti-reverse connection circuit and the second secondary control circuit 312 respectively, and the second secondary control circuit 312 is electrically connected to the first anti-reverse connection circuit 110, the second anti-reverse connection circuit and the third anti-reverse connection circuit respectively;
the third isolation control circuit 310 is turned off by the output voltage of the second reverse connection prevention circuit, and includes:
the second slave stage control circuit 312 is turned off by the output voltage of the second anti-reverse connection circuit;
the third isolation circuit 311 is turned off by the second slave stage control circuit 312 after being turned off.
It should be noted that, as shown in fig. 7, the output voltage TYPE-C/TBT1 of the second anti-reverse connection circuit can turn on Q27 of the second slave stage control circuit 312, and further turn off Q24, so that Q15 and Q16 are turned off, and finally turn off the third isolation circuit 311. Further, Q15, Q16 are QM3005M3, and Q25, Q26, Q27 are 2SK3019.
According to the power supply control method provided by the embodiment of the application, the following beneficial effects are achieved: on the one hand, through being provided with primary power supply circuit 100, first secondary power supply circuit 200 is connected with primary power supply circuit 100 electricity, when primary power supply circuit 100 inserts first power, primary power supply circuit 100 can control first secondary power supply circuit 200 and turn off, make first power supply alone, at this moment, whether first secondary power supply circuit 200 inserts the second power, can not supply power through the second power, impact to electronic equipment when effectively having isolated the second power and having supplied power when inserting, electronic equipment that has avoided first power and second power to supply power simultaneously and lead to burns out. On the other hand, a second slave power supply circuit 300 is further provided, the second slave power supply circuit 300 is respectively electrically connected with the master power supply circuit 100 and the first slave power supply circuit 200, when the master power supply circuit 100 is connected to a first power supply, the master power supply circuit 100 controls the first slave power supply circuit 200 and the second slave power supply circuit 300 to be disconnected, so that the first power supply independently supplies power; or, when the primary power supply circuit 100 is not connected to the first power supply and the first secondary power supply circuit 200 is connected to the second power supply, the first secondary power supply circuit 200 controls the second secondary power supply circuit 300 to be disconnected, so that the second power supply independently supplies power; in summary, by setting the priorities of the master power supply circuit 100, the first slave power supply circuit 200, and the second slave power supply circuit 300, and setting the priority of the master power supply circuit 100 to be the highest, the priority of the first slave power supply circuit 200 times lower, and the priority of the second slave power supply circuit 300 again lower, when different power supplies are connected, the power supplies can be connected or isolated according to the set priorities, so as to achieve effective control of the power supplies, and the power supplies are convenient and safe, thereby effectively avoiding the impact of multiple power supplies on the electronic device. Therefore, the power supply control method can manage the accessed power supply more safely, and effectively avoids electronic equipment from being burnt.
Next, the power control system will be further described with reference to fig. 4 to 7.
The power supply control system includes:
a primary supply circuit 100;
and the first slave power supply circuit 200, the first slave power supply circuit 200 is electrically connected with the master power supply circuit 100, and the master power supply circuit 100 is used for controlling the on/off of the first slave power supply circuit 200 according to the connection state of the first power supply.
It can be understood that, as shown in fig. 4, the power control system further includes a second slave power supply circuit 300, the second slave power supply circuit 300 is electrically connected to the master power supply circuit 100 and the first slave power supply circuit 200 respectively, and the master power supply circuit 100 is further configured to control on/off of the second slave power supply circuit 300 according to the connection state with the first power supply and the connection state of the first slave power supply circuit 200 and the second power supply.
It can be understood that, as shown in fig. 5, the main stage power supply circuit 100 includes a first reverse connection prevention circuit 110 and a first isolation control circuit 120, one end of the first reverse connection prevention circuit 110 is electrically connected to the first power supply, the other end of the first reverse connection prevention circuit 110 is electrically connected to the first isolation control circuit 120, the first slave stage power supply circuit 200, and the second slave stage power supply circuit 300, the first reverse connection prevention circuit 110 is used for protecting the circuit when the first power supply is reversely connected, and the first isolation control circuit 120 is used for performing isolation control on the first power supply.
It can be understood that, as shown in fig. 6, the first slave stage power supply circuit 200 includes a second reverse connection prevention circuit and a second isolation control circuit 210, one end of the second reverse connection prevention circuit is electrically connected to the second power supply, the other end of the second reverse connection prevention circuit is electrically connected to the second slave stage power supply circuit 300 and the second isolation control circuit 210, the other end of the first reverse connection prevention circuit 110 is electrically connected to the second isolation control circuit 210, the second reverse connection prevention circuit is used for protecting the circuit when the second power supply is reversely connected, and the second isolation control circuit 210 is used for performing isolation control on the second power supply.
It can be understood that, as shown in fig. 7, the second slave stage power supply circuit 300 includes a third anti-reverse connection circuit and a third isolation control circuit 310, one end of the third anti-reverse connection circuit is electrically connected to the third power supply, the other end of the third anti-reverse connection circuit is electrically connected to the third isolation control circuit 310, the third isolation control circuit 310 is electrically connected to the other end of the second anti-reverse connection circuit and the other end of the first anti-reverse connection circuit 110, the third anti-reverse connection circuit is used for protecting the circuit when the third power supply is reversely connected, and the third isolation control circuit 310 is used for performing isolation control on the third power supply.
It can be understood that, as shown in fig. 5, the first anti-reverse connection circuit 110 includes a first connection terminal, a first unidirectional TVS tube, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, and a first resistor, where an anode pin of the first connection terminal is electrically connected to a cathode of the first unidirectional TVS tube, one end of the first capacitor, one end of the second capacitor, one end of the third capacitor, one end of the fourth capacitor, one end of the fifth capacitor, one end of the first resistor, the first isolation control circuit 120, the second isolation control circuit 210, and the third isolation control circuit 310, respectively, and a cathode pin of the first connection terminal is electrically connected to an anode of the first unidirectional TVS tube, the other end of the first capacitor, the other end of the second capacitor, the other end of the third capacitor, the other end of the fourth capacitor, the other end of the fifth capacitor, and the other end of the first resistor, respectively.
It should be noted that, as shown in fig. 5, the first connection terminal, the first unidirectional TVS tube, the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, and the first resistor are J1, D1, C2, C3, C4, C5, and R1, respectively, in sequence.
It is understood that, as shown in fig. 5, the first isolation control circuit 120 includes a first isolation circuit 121 and a main control circuit 122, the first isolation circuit 121 is electrically connected to the other end of the first anti-reverse connection circuit 110 and the main control circuit 122, respectively, the first isolation circuit 121 is used for isolating the first power supply, and the main control circuit 122 is used for controlling the first isolation circuit 121 to be turned on and off.
It is understood that, as shown in fig. 6, the second isolation control circuit 210 includes a second isolation circuit 211 and a first slave control circuit 212, the second isolation circuit 211 is electrically connected to the other end of the second anti-reverse connection circuit and the first slave control circuit 212, the first slave control circuit 212 is electrically connected to the other end of the first anti-reverse connection circuit 110 and the other end of the second anti-reverse connection circuit, respectively, the second isolation circuit 211 is used for isolating the second power source, and the first slave control circuit 212 is used for controlling the second isolation circuit 211 to be turned on and off according to the voltage provided by the first anti-reverse connection circuit 110.
It is understood that, as shown in fig. 7, the third isolation control circuit 310 includes a third isolation circuit 311 and a second slave control circuit 312, the third isolation circuit 311 is electrically connected to the other end of the third anti-reverse connection circuit and the second slave control circuit 312, the second slave control circuit 312 is electrically connected to the other end of the first anti-reverse connection circuit 110, the other end of the second anti-reverse connection circuit and the other end of the third anti-reverse connection circuit, the third isolation circuit 311 is used for isolating a third power source, and the second slave control circuit 312 is used for controlling the third isolation circuit 311 to be turned on and off according to the voltage provided by the second anti-reverse connection circuit and the voltage provided by the second anti-reverse connection circuit.
It is understood that, as shown in fig. 5, the first isolation control circuit 120 includes a first isolation circuit 121 and a main control circuit 122, the first isolation circuit 121 is electrically connected to the other end of the first anti-reverse connection circuit 110 and the main control circuit 122, respectively, the first isolation circuit 121 is used for isolating the first power supply, and the main control circuit 122 is used for controlling the first isolation circuit 121 to be turned on and off.
It can be understood that, as shown in fig. 5, the first isolation circuit 121 includes a first P-channel MOS transistor, a second resistor, a sixth capacitor, and a seventh capacitor, the primary control circuit 122 includes a first N-channel MOS transistor, a second N-channel MOS transistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, and an eighth capacitor, a D electrode of the first P-channel MOS transistor is electrically connected to one end of the fifth capacitor, a S electrode of the first P-channel MOS transistor is electrically connected to one end of the second resistor, one end of the sixth capacitor, and a S electrode of the second P-channel MOS transistor, a G electrode of the first P-channel MOS transistor is electrically connected to the other end of the second resistor, the other end of the sixth capacitor, a G electrode of the second P-channel MOS transistor, one end of the third resistor, a D electrode of the second P-channel MOS transistor is electrically connected to one end of the seventh capacitor, a D electrode of the first N-channel MOS transistor is electrically connected to the other end of the third resistor, a G electrode of the first N-channel MOS transistor is electrically connected to the other end of the sixth resistor, a fourth electrode of the sixth resistor, a fifth N-channel MOS transistor, a fourth electrode of the fifth resistor, and a fourth electrode of the seventh capacitor, a fifth resistor, a fourth resistor, a fifth electrode of the fifth resistor, a fifth electrode are electrically connected to the fifth electrode of the seventh capacitor.
As shown in fig. 5, the first P-channel MOS transistor, the second P-channel MOS transistor, the first N-channel MOS transistor, the second resistor, the third resistor, the fourth resistor, the fifth resistor, the sixth resistor, the seventh resistor, the sixth capacitor, the seventh capacitor, and the eighth capacitor are Q11, Q12, Q21, Q22, R2, R3, R4, R5, R6, R7, C6, C7, and C8, respectively, in this order.
It is understood that, as shown in fig. 6, the second isolation control circuit 210 includes a second isolation circuit 211 and a first slave control circuit 212, the second isolation circuit 211 is electrically connected to the other end of the second anti-reverse connection circuit and the first slave control circuit 212, the first slave control circuit 212 is electrically connected to the other end of the first anti-reverse connection circuit 110 and the other end of the second anti-reverse connection circuit, respectively, the second isolation circuit 211 is used for isolating the second power source, and the first slave control circuit 212 is used for controlling the second isolation circuit 211 to be turned on and off according to the voltage provided by the first anti-reverse connection circuit 110.
It is understood that, as shown in fig. 6, the second isolation circuit 211 includes a third P-channel MOS transistor, a fourth P-channel MOS transistor, an eighth resistor, a ninth capacitor, and a tenth capacitor, the first slave control circuit 212 includes a third N-channel MOS transistor, a fourth N-channel MOS transistor, an eleventh capacitor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, and a thirteenth resistor, the second anti-reverse connection circuit includes a second connection terminal, a positive pin of the second connection terminal is electrically connected to a D-pole of the third P-channel MOS transistor and the third isolation control circuit 310, an S-pole of the third P-channel MOS transistor is electrically connected to one end of the ninth capacitor, one end of the eighth resistor, and an S-pole of the fourth P-channel MOS transistor, a G-pole of the third P-channel MOS transistor is electrically connected to the other end of the ninth capacitor, the other end of the eighth resistor, the G-pole of the fourth P-channel MOS transistor, and one end of the ninth resistor, the electrode D of the fourth P-channel MOS tube is electrically connected with one end of a tenth capacitor, the electrode D of the third N-channel MOS tube is electrically connected with the other end of a ninth resistor, the electrode G of the third N-channel MOS tube is electrically connected with one end of the tenth resistor, one end of a thirteenth resistor and the electrode D of the fourth N-channel MOS tube, the other end of the tenth resistor is electrically connected with the anode pin of the second connecting terminal, the electrode G of the fourth N-channel MOS tube is electrically connected with one end of an eleventh resistor, one end of a twelfth resistor and one end of an eleventh capacitor respectively, and the other end of the tenth capacitor, the electrode S of the fourth N-channel MOS tube, the other end of the twelfth resistor, the other end of the eleventh capacitor, the electrode S of the third N-channel MOS tube and the other end of the thirteenth resistor are all grounded.
As shown in fig. 6, the third P-channel MOS transistor, the fourth P-channel MOS transistor, the third N-channel MOS transistor, the fourth N-channel MOS transistor, the ninth capacitor, the tenth capacitor, the eleventh capacitor, the eighth resistor, the ninth resistor, the tenth resistor, the eleventh resistor, the twelfth resistor, and the thirteenth resistor are Q13, Q14, Q23, Q24, C9, C10, C11, R8, R9, R10, R11, R12, and R13, respectively, in this order.
It is understood that, as shown in fig. 7, the third isolation control circuit 310 includes a third isolation circuit 311 and a second slave control circuit 312, the third isolation circuit 311 is electrically connected to the other end of the third anti-reverse connection circuit and the second slave control circuit 312, the second slave control circuit 312 is electrically connected to the other end of the first anti-reverse connection circuit 110, the other end of the second anti-reverse connection circuit and the other end of the third anti-reverse connection circuit, the third isolation circuit 311 is used for isolating a third power source, and the third control circuit is used for controlling the third isolation circuit 311 to be turned on and off according to the second slave control circuit 312.
It is understood that, as shown in fig. 7, the third isolation circuit 311 includes a fifth P-channel MOS transistor, a sixth P-channel MOS transistor, a twelfth capacitor, a thirteenth capacitor, and a fourteenth resistor, the second slave control circuit 312 includes a fifth N-channel MOS transistor, a sixth N-channel MOS transistor, a seventh N-channel MOS transistor, a fourteenth capacitor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty-first resistor, and a twenty-second resistor, the third protection circuit includes a third connection terminal, an anode pin of the third connection terminal is electrically connected to a D pole of the fifth P-channel MOS transistor, an S pole of the fifth P-channel MOS transistor is electrically connected to one end of the twelfth capacitor, one end of the fourteenth resistor, and an S pole of the sixth P-channel MOS transistor respectively, the G pole of the fifth P-channel MOS tube is electrically connected with the other end of the twelfth capacitor, the other end of the fourteenth resistor, the G pole of the sixth P-channel MOS tube and one end of the fifteenth resistor respectively, the D pole of the sixth P-channel MOS tube is electrically connected with one end of the thirteenth capacitor, the other end of the fifteenth resistor is electrically connected with the D pole of the fifth N-channel MOS tube, the G pole of the fifth N-channel MOS tube is electrically connected with one end of the sixteenth resistor, one end of the nineteenth resistor, the D pole of the sixth N-channel MOS tube and the D pole of the seventh N-channel MOS tube respectively, the other end of the sixteenth resistor is electrically connected with the positive pin of the third wiring terminal, the G pole of the sixth N-channel MOS tube is electrically connected with one end of the seventeenth resistor, one end of the eighteenth resistor and one end of the fourteenth capacitor respectively, the other end of the seventeenth resistor is electrically connected with one end of the fifth capacitor, the G pole of the seventh N-channel MOS tube is electrically connected with one end of the twentieth resistor, and the other end of the twenty-first resistor are electrically connected with one end of the twenty-first resistor respectively, one end of a twenty-second resistor and one end of a fifteenth capacitor, the other end of the twenty-second resistor is electrically connected with an anode pin of the second wiring terminal, and the other end of the thirteenth capacitor, the S pole of the fifth N-channel MOS transistor, the other end of the nineteenth resistor, the S pole of the sixth N-channel MOS transistor, the other end of the eighteenth resistor, the other end of the fourteenth capacitor, the S pole of the seventh N-channel MOS transistor, the other end of the twenty-first resistor and the other end of the fifteenth capacitor are all grounded.
It should be noted that, as shown in fig. 7, the fifth P-channel MOS transistor, the sixth P-channel MOS transistor, the fifth N-channel MOS transistor, the sixth N-channel MOS transistor, the seventh N-channel MOS transistor, the twelfth capacitor, the thirteenth capacitor, the fourteenth capacitor, the fifteenth capacitor, the fourteenth resistor, the fifteenth resistor, the sixteenth resistor, the seventeenth resistor, the eighteenth resistor, the nineteenth resistor, the twentieth resistor, the twenty-first resistor, and the twenty-second resistor are Q15, Q16, Q25, Q26, Q27, C12, C13, C14, C15, R14, R15, R16, R17, R18, R19, R20, R21, and R22, respectively, in this order.
Next, the operation procedure of the power supply control method according to the embodiment of the present application is described with reference to fig. 5 to 7.
Due to the continuous technical update and product iteration of notebook computers (including tablet computers), the power supply mode of the notebook computer is required to support both the traditional adapter input and one or more TYPE-C/Thunderbolt (TBT) inputs, and to ensure that any one of the devices cannot be burnt during use.
If the first power supply is an adapter, the second power supply is an input power supply of a TYPE-C interface, the third power supply is an input power supply of a TYPE-C interface, and when only the adapter is connected to the system, as shown in fig. 5, the first connection terminal is J1, if the first power supply is an adapter, the second power supply is an input power supply of a TYPE-C interface, and the third power supply is an input power supply of a TYPE-C interface, when the adapter is connected to the system, + VADP is generated due to voltage generated when the first power supply is connected to the system, as shown in fig. 6, a VADP _ ON signal becomes high level, Q24 turns ON and pulls down a G pole of Q23, Q23 turns off, Q13 and Q14 are not turned ON, and the second isolation circuit 211 in fig. 6 is off, even if the first power supply and the second power supply are connected simultaneously, the second isolation circuit 211 is turned off due to the connection of the first power supply, and therefore, the second power supply is in a non-working state, and is under pure hardware control. Similarly, as shown in fig. 7, Q26 is turned on, and when the G pole of Q25 is pulled down, Q25 is turned off, and thus Q15 and Q16 are not turned on, so that the third isolating circuit 311 is also turned off, and even if the first power supply, the second power supply, and the third power supply are simultaneously turned on, the second isolating circuit 211 and the third isolating circuit 311 are turned off due to the first power supply being turned on, so that the second power supply and the third power supply are in a non-operating state, and are also under pure hardware control.
It should be noted that, as shown in fig. 3, even if the second isolation circuit 211 is turned off after the second power supply is plugged in, the second reverse connection preventing circuit also controls the third isolation circuit 311 to be turned off because of the access of the second power supply, even if the first power supply is removed, the third isolation circuit 311 is also in a turned-off state, and when the first power supply, the second power supply, and the third power supply are not in an access state, and after the first power supply is removed, the second power supply and the third power supply operate simultaneously, only the second power supply is in a working state, which forms more effective protection for the electronic device.
When only the second power supply of the system is accessed through the TYPE-C interface, its insertion detection signal TYPE-C/TBT1 will turn off the third isolation circuit 311. If the electronic equipment is connected with the TYPE-C interface of the third power supply at the moment, the system does not supply power to the electronic equipment; alternatively, the third power supply, when engaged, does not provide power to the system. If the adapter is connected at this time, the insertion detection signal + VADP of the adapter preferentially turns off the second isolation circuit 211 and the third isolation circuit 311, and the system power supply is switched from the currently-supplied second power supply to the adapter with the highest priority. That is, as shown in fig. 6, when only the second power supply is connected to the system, TYPE-C/TBD1 is high, Q27 in fig. 7 is turned on, Q25 is turned off, Q15 and Q16 are turned off, so that the third isolation circuit 311 of the third power supply is turned off. At the moment, if the electronic equipment is accessed through a TYPE-C interface of a third power supply, the system does not supply power to the electronic equipment; alternatively, the third power supply, when engaged, does not provide power to the system. If the adapter is connected at the same time, the VADP _ ON signal in fig. 6 goes high, Q24 turns ON and pulls down the G pole of Q23, and Q23 turns off, and Q13 and Q14 are not turned ON, so the second isolation circuit 211 of the second power supply is turned off and belongs to pure hardware control; meanwhile, Q26 turns on and pulls down the G pole of Q25, then Q25 is turned off, and then Q15 and Q16 are not turned on, so the third isolation circuit 311 of the third power supply is also turned off, which belongs to pure hardware control, and all devices are protected.
When only the third power supply is accessed by the system, the insertion detection signal TYPE-C/TBT2 of the third power supply is in the lowest level of priority. If the adapter or the second power supply is connected at this time, the two insertion detection signals will close the third isolation circuit 311 of the third power supply at the first time, and then open one of the adapter or the second power supply; if both are connected simultaneously, only the adapter will conduct and power the system, and the principle can be referred to the above description, and all devices are protected.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (7)
1. A power supply control method is applied to a power supply control system, and is characterized in that the power supply control system comprises:
a primary power supply circuit;
a first slave power supply circuit electrically connected to the master power supply circuit;
the power supply control method comprises the following steps:
a first power supply is connected to the primary power supply circuit and is supplied with power through the primary power supply circuit;
when the first power supply is connected to the primary power supply circuit, the primary power supply circuit controls the first secondary power supply circuit to be switched off;
the power supply control system further comprises a second slave power supply circuit, and the second slave power supply circuit is electrically connected with the master power supply circuit and the first slave power supply circuit respectively;
the power supply control method further includes at least one of:
when the first power supply is connected to the primary power supply circuit, the secondary power supply circuit is controlled to be switched off by the primary power supply circuit;
when the first slave stage power supply circuit is connected to a second power supply, the first slave stage power supply circuit controls the second slave stage power supply circuit to be switched off;
the main-stage power supply circuit comprises a first reverse connection prevention circuit and a first isolation control circuit, and the first reverse connection prevention circuit is electrically connected with the first isolation control circuit, the first slave-stage power supply circuit and the second slave-stage power supply circuit respectively;
the connecting the first power supply to the primary power supply circuit and supplying power through the primary power supply circuit includes:
connecting the first power supply to the first anti-reverse connection circuit to serve as an input voltage;
the first isolation control circuit is conducted through the output voltage of the first reverse connection preventing circuit;
the first power supply supplies power through the first isolation control circuit;
the first isolation control circuit comprises a first isolation circuit and a main control circuit, and the first isolation circuit is electrically connected with the first reverse connection prevention circuit and the main control circuit respectively;
the switching on the first isolation control circuit by the output voltage of the first reverse connection prevention circuit includes:
the main-stage control circuit is conducted through the output voltage of the first reverse-connection preventing circuit;
and the first isolation circuit is conducted through the conducted main-stage control circuit.
2. The power supply control method according to claim 1, wherein the first slave stage power supply circuit comprises a second reverse connection prevention circuit and a second isolation control circuit, the second reverse connection prevention circuit is electrically connected with the second slave stage power supply circuit and the second isolation control circuit respectively, and the first reverse connection prevention circuit is electrically connected with the second isolation control circuit;
when the first power supply is connected to the primary power supply circuit, the primary power supply circuit controls the first secondary power supply circuit to be switched off, and the method comprises the following steps:
and the second isolation control circuit is switched off through the output voltage of the first reverse connection preventing circuit.
3. The power supply control method according to claim 2, wherein the second slave stage power supply circuit comprises a third anti-reverse connection circuit and a third isolation control circuit, the third anti-reverse connection circuit is electrically connected with the third isolation control circuit, and the third isolation control circuit is respectively electrically connected with the second anti-reverse connection circuit and the first anti-reverse connection circuit;
when the first power supply is connected to the master power supply circuit, the master power supply circuit controls the second slave power supply circuit to be switched off, including:
and the third isolation control circuit is switched off through the output voltage of the first reverse connection preventing circuit.
4. The power control method of claim 3, wherein when the first slave stage power supply circuit is connected to the second power supply, the controlling the second slave stage power supply circuit to be disconnected by the first slave stage power supply circuit comprises:
and the third isolation control circuit is enabled by the turn-off of the output voltage of the second reverse-connection preventing circuit.
5. The power control method according to claim 2, wherein the second isolation control circuit comprises a second isolation circuit and a first slave control circuit, the second isolation circuit is electrically connected with the second anti-reverse connection circuit and the first slave control circuit respectively, and the first slave control circuit is electrically connected with the first anti-reverse connection circuit and the second anti-reverse connection circuit respectively;
the turning off of the second isolation control circuit by the output voltage of the first reverse connection prevention circuit includes:
the first slave stage control circuit is turned off through the output voltage of the first reverse connection prevention circuit;
and the second isolation circuit is switched off through the switched-off first slave stage control circuit.
6. The power supply control method according to claim 4, wherein the third isolation control circuit comprises a third isolation circuit and a second slave control circuit, the third isolation circuit is electrically connected with the third anti-reverse connection circuit and the second slave control circuit respectively, and the second slave control circuit is electrically connected with the first anti-reverse connection circuit, the second anti-reverse connection circuit and the third anti-reverse connection circuit respectively;
the third isolation control circuit is turned off by the output voltage of the second reverse connection prevention circuit, and the third isolation control circuit includes:
the second slave stage control circuit is turned off through the output voltage of the second anti-reverse connection circuit;
and the third isolation circuit is turned off through the second slave control circuit after being turned off.
7. An electronic device, characterized in that the electronic device is configured to perform a power control method comprising any of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210533569.9A CN114899788B (en) | 2022-05-17 | 2022-05-17 | Power supply control method and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210533569.9A CN114899788B (en) | 2022-05-17 | 2022-05-17 | Power supply control method and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114899788A CN114899788A (en) | 2022-08-12 |
| CN114899788B true CN114899788B (en) | 2023-03-31 |
Family
ID=82723647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210533569.9A Active CN114899788B (en) | 2022-05-17 | 2022-05-17 | Power supply control method and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114899788B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014190513A1 (en) * | 2013-05-29 | 2014-12-04 | 吉瑞高新科技股份有限公司 | Charging circuit and method for preventing reversal of charging power supply |
| WO2018076294A1 (en) * | 2016-10-28 | 2018-05-03 | 海能达通信股份有限公司 | Reverse connection and current backflow prevention circuit |
| CN212012164U (en) * | 2020-03-03 | 2020-11-24 | 百富计算机技术（深圳）有限公司 | Power supply path management circuit and energy storage power supply |
| CN214850479U (en) * | 2021-01-18 | 2021-11-23 | 北京千方科技股份有限公司 | Reverse connection prevention and overvoltage prevention protection circuit and edge computing equipment |
| CN114157132A (en) * | 2021-11-17 | 2022-03-08 | 深圳市优必选科技股份有限公司 | Slow start switching circuit, slow start switching device and electronic equipment |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358217C (en) * | 2003-12-11 | 2007-12-26 | 上海贝尔阿尔卡特股份有限公司 | Switching circuit for low voltage power supply in master-slave power supply mode |
| CN100346267C (en) * | 2004-03-22 | 2007-10-31 | 联想(北京)有限公司 | Electric power management system and method for electronic equipment |
| EP2161813A3 (en) * | 2008-09-04 | 2014-03-12 | Samsung Electronics Co., Ltd. | Method for selecting an electric power supply, a circuit and an apparatus thereof |
| CN204967307U (en) * | 2015-07-31 | 2016-01-13 | 中兴通讯股份有限公司 | Battery measurement control circuit and battery measurement system |
| CN108288480B (en) * | 2018-01-05 | 2020-12-04 | 佛山市顺德区中山大学研究院 | Data latching and reading sensitive amplifier based on magnetic tunnel junction |
| WO2021007682A1 (en) * | 2019-07-12 | 2021-01-21 | 华为技术有限公司 | Power supply protection method, and system with power supply protection function |
| CN113949031A (en) * | 2020-07-16 | 2022-01-18 | 施耐德电器工业公司 | Power supply device of motor protector and power supply method thereof |
| CN113258552B (en) * | 2021-06-23 | 2024-02-09 | 阳光电源股份有限公司 | Reverse connection prevention control circuit and application device thereof |
-
2022
- 2022-05-17 CN CN202210533569.9A patent/CN114899788B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014190513A1 (en) * | 2013-05-29 | 2014-12-04 | 吉瑞高新科技股份有限公司 | Charging circuit and method for preventing reversal of charging power supply |
| WO2018076294A1 (en) * | 2016-10-28 | 2018-05-03 | 海能达通信股份有限公司 | Reverse connection and current backflow prevention circuit |
| CN212012164U (en) * | 2020-03-03 | 2020-11-24 | 百富计算机技术（深圳）有限公司 | Power supply path management circuit and energy storage power supply |
| CN214850479U (en) * | 2021-01-18 | 2021-11-23 | 北京千方科技股份有限公司 | Reverse connection prevention and overvoltage prevention protection circuit and edge computing equipment |
| CN114157132A (en) * | 2021-11-17 | 2022-03-08 | 深圳市优必选科技股份有限公司 | Slow start switching circuit, slow start switching device and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114899788A (en) | 2022-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216872849U (en) | Hot plug circuit and electronic equipment | |
| CN108199362A (en) | A kind of I/O interface ESD leakage protection circuits | |
| CA3031432A1 (en) | Data transmission apparatus of circuit breaker controller | |
| CN114513035B (en) | Battery pack address allocation system, method and computer readable storage medium | |
| CN114899788B (en) | Power supply control method and electronic equipment | |
| CN115576406A (en) | Power failure detection and power supply maintaining function circuit and electronic equipment | |
| CN108879943A (en) | A kind of power supply switch circuit and electronic equipment | |
| CN113690966A (en) | Switch circuit, battery management system, battery pack, electric equipment and control method | |
| CN217643132U (en) | Power control circuit and electronic equipment | |
| KR100734128B1 (en) | USB Charging and Data Link system combined with external battery and external memory device | |
| CN115391258B (en) | Interface management circuit, method, apparatus, device, storage medium, and program product | |
| CN109739801B (en) | Serial port level conversion circuit between MCU chip and SOC chip | |
| CN105471690A (en) | Energy delivery on paths used for communication | |
| CN215267612U (en) | Protection circuit and medical equipment | |
| EP0235401A1 (en) | Power supply switch circuit | |
| CN212162912U (en) | Back-up power supply input self-starting control circuit suitable for power distribution terminal power supply | |
| CN114172258A (en) | Switching circuit with automatic battery selection function and power supply device thereof | |
| CN109301907B (en) | Switching circuit and method of super capacitor | |
| CN112952988A (en) | Power supply switching device for low-voltage priority control | |
| KR20170058040A (en) | Battery management system | |
| CN110765054B (en) | Switching circuit of conference tablet system, conference tablet and OPS (optical fiber switch) equipment | |
| CN217904088U (en) | Power supply system of integrated workstation and integrated workstation | |
| CN216599409U (en) | Bleeder circuit, board card and network equipment | |
| CN216649315U (en) | Power supply circuit | |
| CN218499012U (en) | Buffer circuit and power driving apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |