CN105846401A - Power management device and method, and electronic device - Google Patents
Power management device and method, and electronic device Download PDFInfo
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- CN105846401A CN105846401A CN201610261433.1A CN201610261433A CN105846401A CN 105846401 A CN105846401 A CN 105846401A CN 201610261433 A CN201610261433 A CN 201610261433A CN 105846401 A CN105846401 A CN 105846401A
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- 238000007726 management method Methods 0.000 claims description 31
- 230000001276 controlling effect Effects 0.000 description 10
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Classifications
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- 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
- H02H7/10—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 converters; for rectifiers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
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Abstract
The present invention provides a power management device and method, and an electronic device. The power management device comprises an output interface, a power converter and an interface controller, wherein the power converter and the interface controller are connected through the output interface, and the power converter is connected with an external power device through the output interface; the power converter is configured to provide output voltage to the output interface; the interface controller is configured to store the work voltage of the external power device in advance, detect the output voltage provided by the power convertor to the output interface, and determines the relation between the output voltage and the work voltage of the external power device, and is configured to control the output interface to break off the connection between the power converter and the external power device when the output voltage is larger than the work voltage of the external power device. According to the technical scheme, the safety of a power device is improved.
Description
Technical Field
The present invention relates to the field of electronic information technologies, and in particular, to a power management apparatus and method, and an electronic device.
Background
With the development of electronic information technology, various types of electronic devices are becoming more popular, and electronic devices usually include a plurality of power consumption devices with different functions, and only a relatively small operating voltage needs to be supplied to each power consumption device to maintain the normal operation thereof.
At present, in order to provide corresponding operating voltages for each electric device inside an electronic apparatus, it is generally necessary to manage electric energy provided to the electronic apparatus by an external power supply.
However, when the input voltage provided by the external power source is too high or the power converter itself fails, the power converter may generate an overcurrent, which causes the output voltage of the power converter to be much higher than the operating voltage of each electric device, thereby damaging the electric devices.
Disclosure of Invention
The embodiment of the invention provides a power management device, a power management method and electronic equipment, which can improve the safety of a power utilization device.
In a first aspect, the present invention provides a power management device, including:
the power supply converter is connected with the interface controller through the output interface, and the power supply converter is connected with an external power utilization device through the output interface;
the power converter is used for providing output voltage for the output interface;
the interface controller is used for pre-storing the working voltage of the external power utilization device; detecting the output voltage provided by the power converter to the output interface, judging the relation between the output voltage and the working voltage of the external electric device, and controlling the output interface to disconnect the power converter and the external electric device when the output voltage is greater than the working voltage of the external electric device.
Further, the method also comprises the following steps: an input interface, wherein,
the power converter and the interface controller are respectively connected with an external power supply through the input interface;
the power converter is further used for acquiring an input voltage provided by the external power supply through the input interface;
the interface controller is further used for pre-storing the maximum load voltage of the power converter; detecting an input voltage provided by an external power supply to the input interface, and controlling the input interface to disconnect the external power supply from the power converter when the input voltage is greater than the maximum load voltage of the power converter.
Further, the method also comprises the following steps: a signal feedback unit; wherein,
the signal feedback unit is respectively connected with the power converter and the interface controller;
the interface controller is further used for respectively sending the working voltage of the external power utilization device and the detected input voltage and output voltage to the signal feedback unit;
the signal feedback unit is used for sending a pulse width modulation signal to the power converter according to the working voltage of the external electric device, the received input voltage and the received output voltage when the received output voltage is not equal to the working voltage of the external electric device;
and the power converter is used for providing working voltage corresponding to the external electric device to the output interface according to the received pulse width modulation signal.
Further, in the above-mentioned case,
the interface controller is further used for sending the maximum load voltage of the power converter to the signal feedback unit;
the signal feedback unit is further used for sending a first starting signal to the interface controller when the power converter and an external power supply are in a disconnected state and the input voltage is not greater than the maximum load voltage of the power converter; when the power converter and the external electric device are in a disconnected state and the output voltage is equal to the working voltage of the external electric device, sending a second starting signal to the interface controller;
the interface controller is further used for controlling the input interface to be communicated with an external power supply and the power supply converter when receiving a first starting signal; and when receiving a second starting signal, controlling the output interface to be communicated with an external power utilization device and the power converter.
Further, the power converter includes:
at least one board-level power cell, wherein,
when the number of the board-level power units is one, the input end of each board-level power unit is connected with the input interface, and the output end of each board-level power unit is connected with the output interface;
when the number of the board-level power units is at least two, the input ends of the at least two board-level power units are connected to the input interface in series, so that each board-level power unit averagely loads an input voltage provided by an external power supply to the input interface; the output ends of the at least two board-level power units are connected to the output interface in parallel, so that each board-level power unit provides the working voltage of the corresponding external electric device to the output interface.
In a second aspect, the present invention provides a power management method based on the power management apparatus in the first aspect, including:
s0: storing the working voltage of an external power utilization device by using an interface controller in advance;
s1: providing an output voltage to an output interface by using a power converter;
s2: the interface controller is used for detecting the output voltage provided by the power converter to the output interface, judging the relation between the output voltage and the working voltage of the external electric device, and controlling the output interface to disconnect the power converter from the external electric device when the output voltage is greater than the working voltage of the external electric device.
Further, in the above-mentioned case,
the step S0 further includes: pre-storing the maximum load voltage of the power converter by using an interface controller;
after the step S0, before the step S1, the method further includes:
acquiring input voltage provided by an external power supply through an input interface by using a power converter;
the step S2 further includes:
and detecting the input voltage provided by the external power supply to the input interface by using the interface controller, and controlling the input interface to disconnect the external power supply from the power converter when the input voltage is greater than the maximum load voltage of the power converter.
Further, after the step S2, the method further includes:
b1: respectively sending the working voltage of the external power utilization device and the detected input voltage and output voltage to the signal feedback unit by using an interface controller;
b2: when the received output voltage is not equal to the working voltage of the external electric device, the signal feedback unit is used for sending a pulse width modulation signal to the power converter according to the working voltage of the external electric device, the received input voltage and the received output voltage;
b3: and providing the working voltage corresponding to the external electric device to the output interface by using the power converter according to the received pulse width modulation signal.
Further, in the above-mentioned case,
the step B1, further comprising: sending the maximum load voltage of the power converter to a signal feedback unit by using an interface controller;
after the step B1, before the step B2, the method further comprises:
when the power converter and an external power supply are in a disconnected state and the input voltage is not greater than the maximum load voltage of the power converter, sending a first starting signal to the interface controller;
when the interface controller receives a first starting signal, the interface controller controls the input interface to be communicated with an external power supply and a power supply converter;
after the step B2, before the step B3, the method further comprises:
when the power converter and the external power consumption device are in a disconnected state and the output voltage is equal to the working voltage of the external power consumption device, sending a second starting signal to the interface controller;
and when the interface controller receives the second starting signal, the output interface is controlled to be communicated with the external power utilization device and the power supply converter.
In a third aspect, the present invention provides an electronic device, comprising:
the power management device according to any one of the first aspect and at least one electric device, wherein each electric device is connected to the power management device.
The embodiment of the invention provides a power management device and method and 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 structural diagram of a power management device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another power management apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another power management apparatus according to an embodiment of the present invention;
fig. 4 is a diagram illustrating a connection relationship between a power converter and an input interface and an output interface according to an embodiment of the present invention;
fig. 5 is a diagram illustrating a connection relationship between an input interface and an output interface of another power converter according to an embodiment of the present invention;
fig. 6 is a diagram illustrating a connection relationship between a power converter and an input interface and an output interface according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
FIG. 8 is a flowchart of a power management method according to an embodiment of the invention;
fig. 9 is a flowchart of another power management method according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a power management device 10, including:
the power supply system comprises an output interface 101, a power converter 102 and an interface controller 103, wherein the power converter 102 is connected with the interface controller 103 through the output interface 101, and the power converter 102 is connected with an external power device through the output interface 101;
the power converter 102 is configured to provide an output voltage to the output interface 101;
the interface controller 103 is configured to store an operating voltage of the external power consumption device in advance; detecting an output voltage provided by the power converter 102 to the output interface 101, determining a relationship between the output voltage and an operating voltage of the external power consumption device, and controlling the output interface 101 to disconnect the power converter 102 from the external power consumption device when the output voltage is greater than the operating voltage of the external power consumption device.
In one embodiment of the invention, the interface controller detects the output voltage provided by the power converter to the output interface, and when the output voltage is detected to be greater than the working voltage of the correspondingly connected electric device, the output interface is controlled to disconnect the power converter from the electric device, so that the electric device is prevented from being damaged due to overhigh output voltage provided by the power converter to the electric device, and the safety of the electric device is improved.
Further, in order to prevent the power converter from being damaged due to an overcurrent phenomenon caused by an excessively high input voltage provided by the external power supply to the power converter, as shown in fig. 2, in a preferred embodiment of the present invention, the power converter further includes: an input interface 201, wherein,
the power converter 102 and the interface controller 103 are respectively connected with an external power supply through the input interface 201;
the power converter 102 is further configured to obtain an input voltage provided by the external power source through the input interface 201;
the interface controller 103 is further configured to store a maximum load voltage of the power converter 102 in advance; detecting an input voltage provided by an external power supply to the input interface 201, and controlling the input interface 201 to disconnect the external power supply from the power converter 102 when the input voltage is greater than a maximum load voltage of the power converter 102.
Further, since the external power supply that provides the input voltage to the power converter through the input interface is usually a dc high voltage power supply, the dc high voltage power supply has stability, and the operating voltage obtained by the power consumer from the power converter through the output interface is usually a regulated power supply, in an actual service scenario, the power converter needs to be configured reasonably according to the magnitude of the actual input voltage, specifically, as shown in fig. 3, in a preferred embodiment of the present invention, the external power supply further includes: a signal feedback unit 301; wherein,
the signal feedback unit 301 is respectively connected to the power converter 102 and the interface controller 103;
the interface controller 103 is further configured to send a working voltage of an external power consumption device and the detected input voltage and output voltage to the signal feedback unit 301 respectively;
the signal feedback unit 301 is configured to send a pulse width modulation signal to the power converter 102 according to the working voltage of the external power device, the received input voltage, and the received output voltage when the received output voltage is not equal to the working voltage of the external power device;
the power converter 102 is configured to provide a working voltage corresponding to an external electrical device to the output interface 101 according to the received pulse width modulation signal.
Correspondingly, when the input voltage is within the effective load voltage range of the power converter, the external power supply and the power converter can be communicated again, and after the power converter is flexibly configured in combination with an actual service scene, when the output voltage of the power converter is equal to the working voltage of the electric device, the electric device and the power converter can be communicated again, so that the power converter converts the input voltage into the working voltage corresponding to the external electric device and outputs the working voltage to the correspondingly connected external electric device, and the problem that the external electric device cannot directly use the high-voltage power supply provided by the external power supply is solved; specifically, as shown in fig. 3, in a preferred embodiment of the present invention,
the interface controller 103 is further configured to send a maximum load voltage of the power converter 102 to the signal feedback unit 301;
the signal feedback unit 301 is further configured to send a first start signal to the interface controller 103 when the power converter 102 is disconnected from an external power source and the input voltage is not greater than a maximum load voltage of the power converter 102; when the power converter 102 and the external power consumption device are in a disconnected state and the output voltage is equal to the working voltage of the external power consumption device, sending a second start signal to the interface controller 103;
the interface controller 103 is further configured to control the input interface 201 to connect an external power source and the power converter 102 when receiving a first start signal; when receiving a second start signal, the output interface 101 is controlled to communicate with an external power consumption device and the power converter 102.
It should be noted that, when the external power supply and the power converter and the external power consumption device quality inspection are communicated with each other, the interface controller may further be configured to detect an input current flowing through the input interface and an output current flowing through the output interface, and send the detected input current and output current to the signal feedback device, so that the signal feedback device may determine the power state (for example, input overcurrent, output overcurrent, and the like) of the power converter according to the received input current and output current, respectively.
Further, in order to improve the voltage loading capability of the power converter, in a preferred embodiment of the present invention, the power converter includes:
at least one board-level power cell, wherein,
when the number of the board-level power units is one, the input end of each board-level power unit is connected with the input interface, and the output end of each board-level power unit is connected with the output interface;
when the number of the board-level power units is at least two, the input ends of the at least two board-level power units are connected to the input interface in series, so that each board-level power unit averagely loads an input voltage provided by an external power supply to the input interface; the output ends of the at least two board-level power units are connected to the output interface in parallel, so that each board-level power unit provides the working voltage of the corresponding external electric device to the output interface.
In an embodiment of the present invention, the input terminal of each board-level power unit includes a positive input terminal and a negative input terminal; the output end of each board-level power unit comprises a positive output end and a negative output end respectively; when the number of the board-level power units is 1, as shown in fig. 4, the positive input end and the negative input end of each board-level power unit are respectively connected to the positive electrode and the negative electrode of the input interface, and the positive output end and the negative output end of each board-level power unit are respectively connected to the positive electrode and the negative electrode of the output interface.
In an embodiment of the present invention, when the number of the board-level power units is multiple, for example, two, as shown in fig. 5, the positive input end of the board-level power unit a is connected to the positive electrode of the input interface, the negative input end of the board-level power unit a is connected to the positive input end of the board-level power unit B, and the positive output end and the negative output end of the board-level power unit a are respectively connected to the positive electrode and the negative electrode of the output interface; and the negative electrode input end of the board-level power unit B is connected with the negative electrode of the input interface, and the positive electrode output end and the negative electrode output end are respectively connected with the positive electrode and the negative electrode of the output interface.
In an embodiment of the present invention, when the number of the board-level power units is multiple, for example, three, as shown in fig. 6, the positive input end of the board-level power unit C is connected to the positive electrode of the input interface, the negative input end is connected to the positive input end of the board-level unit D, and the positive output end and the negative output end are respectively connected to the positive electrode and the negative electrode of the output interface; the negative input end of the board-level power unit D is connected with the positive input end of the board-level power unit E, and the positive output end and the negative output end are respectively connected to the positive electrode and the negative electrode of the output interface; and the negative electrode input end of the board-level power unit E is connected with the negative electrode of the input interface, and the positive electrode output end and the negative electrode output end are respectively connected with the positive electrode and the negative electrode of the output interface.
Correspondingly, as shown in fig. 6, when the power converter includes 3 board-level power units, and the input voltage provided by the external power supply to the input interface is 3KV, the load voltages respectively corresponding to the board-level power unit C, the board-level power unit D, and the board-level power unit E are 1KV, it can be seen that the multiple board-level power units can averagely load the input voltage, the maximum load voltage of the board-level power units is fixed, and the greater the number of the board-level power units, the greater the maximum load voltage corresponding to the power converter is, and the working capability of the power converter is improved; meanwhile, when the corresponding working current of the external power utilization device under the working voltage of 300V is 3A, the current provided by the board-level power unit C, the board-level power unit D and the board-level power unit E to the output interface is 1A, and the working current required by the power utilization device in the working process is evenly distributed to each board-level power unit, so that the phenomenon that a large amount of energy is lost due to the fact that a large current is directly output is avoided.
As shown in fig. 7, an embodiment of the present invention provides an electronic device, including:
the power management device 10 and at least one powered device 70 according to any of the above embodiments, wherein each powered device 70 is connected to the power management device 10.
In an embodiment of the present invention, a power management device is disposed in the electronic device, and the power management device can convert an unstable high-voltage power provided by an external power source into a regulated power supply that can be used by each power consuming device in the electronic device.
As shown in fig. 8, an embodiment of the present invention provides a power management method based on the power management apparatus in any one of the foregoing embodiments, where the method may include the following steps:
s0: storing the working voltage of an external power utilization device by using an interface controller in advance;
s1: providing an output voltage to an output interface by using a power converter;
s2: the interface controller is used for detecting the output voltage provided by the power converter to the output interface, judging the relation between the output voltage and the working voltage of the external electric device, and controlling the output interface to disconnect the power converter from the external electric device when the output voltage is greater than the working voltage of the external electric device.
Further, in order to prevent the power converter from being damaged due to an overcurrent phenomenon caused by an excessively high input voltage provided by the external power supply to the power converter, in a preferred embodiment of the present invention, the step S0 further includes: pre-storing the maximum load voltage of the power converter by using an interface controller;
after the step S0, before the step S1, the method further includes:
acquiring input voltage provided by an external power supply through an input interface by using a power converter;
the step S2 further includes:
and detecting the input voltage provided by the external power supply to the input interface by using the interface controller, and controlling the input interface to disconnect the external power supply from the power converter when the input voltage is greater than the maximum load voltage of the power converter.
Further, in order to implement that in an actual service scenario, the power converter is configured reasonably according to the magnitude of the actual input voltage, so that the power converter outputs the corresponding operating voltage to the electrical device, in a preferred embodiment of the present invention, after step S2, the method further includes:
b1: respectively sending the working voltage of the external power utilization device and the detected input voltage and output voltage to the signal feedback unit by using an interface controller;
b2: when the received output voltage is not equal to the working voltage of the external electric device, the signal feedback unit is used for sending a pulse width modulation signal to the power converter according to the working voltage of the external electric device, the received input voltage and the received output voltage;
b3: and providing the working voltage corresponding to the external electric device to the output interface by using the power converter according to the received pulse width modulation signal.
Correspondingly, when the input voltage is within the effective load voltage range of the power converter, the external power supply and the power converter can be communicated again, and after the power converter is flexibly configured in combination with an actual service scene, when the output voltage of the power converter is equal to the working voltage of the electric device, the electric device and the power converter can be communicated again, so that the power converter converts the input voltage into the working voltage corresponding to the external electric device and outputs the working voltage to the correspondingly connected external electric device; in particular, in a preferred embodiment of the present invention,
the step B1, further comprising: sending the maximum load voltage of the power converter to a signal feedback unit by using an interface controller;
after the step B1, before the step B2, the method further comprises:
when the power converter and an external power supply are in a disconnected state and the input voltage is not greater than the maximum load voltage of the power converter, sending a first starting signal to the interface controller;
when the interface controller receives a first starting signal, the interface controller controls the input interface to be communicated with an external power supply and a power supply converter;
after the step B2, before the step B3, the method further comprises:
when the power converter and the external power consumption device are in a disconnected state and the output voltage is equal to the working voltage of the external power consumption device, sending a second starting signal to the interface controller;
and when the interface controller receives the second starting signal, the output interface is controlled to be communicated with the external power utilization device and the power supply converter.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described below with specific embodiments, and with reference to fig. 9, the method may include the following steps:
in step 901, the operating voltage of the electric device and the maximum load voltage of the power converter are stored in the interface controller in advance.
In an embodiment of the present invention, taking an example that the power converter includes three board-level power units, input ends of the three board-level power units are connected in series to the input interface, output ends of the three board-level power units are connected in parallel to the output interface, and a maximum load voltage of each board-level power unit is 1KV, that is, the maximum load voltage of the power converter may include 3 KV; here, the operating voltage of the powered device may include 300V.
Step 902, the interface controller detects the input voltage provided by the external power supply to the input interface, judges whether the input voltage is greater than 3KV, if yes, executes step 903; otherwise, step 904 is performed.
Step 903, the interface controller controls the input interface to disconnect the external power supply from the power converter.
In step 904, the interface controller sends the input voltage and the maximum load voltage of the power converter to the signal feedback unit.
It should be noted that, when the input voltage is continuously greater than 3KV within the target time period, the above steps 902 to 904 are executed in a loop.
Step 905, when the power converter and the external power source are disconnected and the input voltage sent to the signal feedback unit by the interface controller is not greater than the maximum load voltage of the power converter, the signal feedback unit sends a first start signal to the interface controller.
Step 906, the interface controller controls the input interface to communicate with the external power supply and the power supply converter when receiving the first start signal.
Step 907, the interface controller detects the output voltage provided by the power converter to the output interface, determines whether the output voltage is greater than 300V, if yes, executes step 908; otherwise, step 909 is executed.
Step 908, the interface controller controls the output interface to disconnect the power converter from the powered device.
In step 909, the interface controller sends the input voltage, the output voltage, and the operating voltage of the powered device to the signal feedback unit.
Step 910, when the output voltage received by the signal feedback unit is not equal to 300V, the signal feedback unit sends a pulse width modulation signal to the power converter according to the working voltage of the electric device, the received input voltage and the received output voltage.
In an embodiment of the present invention, in a process of converting an input voltage into an output voltage, a power converter including a plurality of board-level power units converts the input voltage into a corresponding output voltage mainly by changing magnetic fluxes between windings corresponding to an input end and an output end of each board-level power unit, where a signal feedback unit calculates, by using a working voltage of a power-consuming device, the received input voltage, the received output voltage, and other related information of the board-level power units, magnetic fluxes corresponding to respective magnetic fluxes when each board-level power unit needs to convert a load voltage of 1KV into 300V and output the load voltage, and sends a pulse width modulation signal corresponding to the magnetic fluxes to the power converter including three board-level power units.
Step 911, the power converter provides 300V output voltage to the output interface according to the received pulse width modulation signal.
Step 912, when the power converter and the electric device are disconnected and the output voltage is equal to 300V, the signal feedback unit sends a second start signal to the interface controller.
And step 913, when receiving the second start signal, the interface controller controls the output interface to communicate with the external power supply and the power converter, so that the power converter outputs a 300V working voltage to the electric device through the output interface.
At this time, each board-level power unit provides 300V of working voltage to the output interface, and when the working current corresponding to the electric device in operation is 3A, the magnitude of the current output by each board-level power unit to the output interface is 1A.
In the above steps of the embodiment of the present invention, the interface controller and the signal feedback unit are used to control the electric energy input and output states of the power converter, convert the input voltage provided by the external power source into the working voltage suitable for the electric device, and output the working voltage to the electric device, so as to prevent the power converter from being damaged when the input voltage provided by the external power source is too high, and prevent the electric device from being damaged when the power converter itself fails, which results in the output voltage being much higher than the working voltage of the electric device.
The embodiments of the invention have at least the following beneficial effects:
1. the interface controller detects the output voltage provided by the power converter to the output interface, and when the output voltage is detected to be greater than the working voltage of the correspondingly connected electric device, the output interface is controlled to disconnect the power converter from the electric device, so that the electric device is prevented from being damaged due to overhigh output voltage provided by the power converter to the electric device, and the safety of the electric device is improved.
2. The interface controller detects the input voltage provided by the external power supply to the input interface, and when the input voltage is greater than the maximum load voltage of the power converter, the input interface is controlled to disconnect the external power supply from the power converter, so that the power converter is prevented from overcurrent and even damaged when the input voltage provided by the external power supply to the power converter is too high.
3. The signal feedback unit sends a pulse width modulation signal to the power converter according to the working voltage of the external electric device, the received input voltage and the output voltage so as to configure the power converter, and the power converter is flexibly configured according to the actual service scene, so that the power converter can accurately output the working voltage corresponding to the external electric device.
4. The power converter comprises a plurality of board-level power units, the input end of each board-level power unit is connected to the input interface in series, the plurality of board-level power units can averagely load input voltage, the maximum load voltage of the board-level power units is fixed, the larger the number of the board-level power units is, the larger the maximum load voltage corresponding to the power converter is, and the working capacity of the power converter is improved; meanwhile, the output ends of the plurality of board-level power units are connected to the output interface in parallel, so that each board-level power unit can averagely share the working current required by the power utilization device during working, namely, each board-level power unit only needs to provide a smaller output current for the output interface, and the energy loss is reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A power management device, comprising:
the power supply converter is connected with the interface controller through the output interface, and the power supply converter is connected with an external power utilization device through the output interface;
the power converter is used for providing output voltage for the output interface;
the interface controller is used for pre-storing the working voltage of the external power utilization device; detecting the output voltage provided by the power converter to the output interface, judging the relation between the output voltage and the working voltage of the external electric device, and controlling the output interface to disconnect the power converter and the external electric device when the output voltage is greater than the working voltage of the external electric device.
2. The power management device of claim 1, further comprising: an input interface, wherein,
the power converter and the interface controller are respectively connected with an external power supply through the input interface;
the power converter is further used for acquiring an input voltage provided by the external power supply through the input interface;
the interface controller is further used for pre-storing the maximum load voltage of the power converter; detecting an input voltage provided by an external power supply to the input interface, and controlling the input interface to disconnect the external power supply from the power converter when the input voltage is greater than the maximum load voltage of the power converter.
3. The power management device of claim 2, further comprising: a signal feedback unit; wherein,
the signal feedback unit is respectively connected with the power converter and the interface controller;
the interface controller is further used for respectively sending the working voltage of the external power utilization device and the detected input voltage and output voltage to the signal feedback unit;
the signal feedback unit is used for sending a pulse width modulation signal to the power converter according to the working voltage of the external electric device, the received input voltage and the received output voltage when the received output voltage is not equal to the working voltage of the external electric device;
and the power converter is used for providing working voltage corresponding to the external electric device to the output interface according to the received pulse width modulation signal.
4. The power management device of claim 3,
the interface controller is further used for sending the maximum load voltage of the power converter to the signal feedback unit;
the signal feedback unit is further used for sending a first starting signal to the interface controller when the power converter and an external power supply are in a disconnected state and the input voltage is not greater than the maximum load voltage of the power converter; when the power converter and the external electric device are in a disconnected state and the output voltage is equal to the working voltage of the external electric device, sending a second starting signal to the interface controller;
the interface controller is further used for controlling the input interface to be communicated with an external power supply and the power supply converter when receiving a first starting signal; and when receiving a second starting signal, controlling the output interface to be communicated with an external power utilization device and the power converter.
5. The power management device of any of claims 2 to 4, wherein the power converter comprises:
at least one board-level power cell, wherein,
when the number of the board-level power units is one, the input end of each board-level power unit is connected with the input interface, and the output end of each board-level power unit is connected with the output interface;
when the number of the board-level power units is at least two, the input ends of the at least two board-level power units are connected to the input interface in series, so that each board-level power unit averagely loads an input voltage provided by an external power supply to the input interface; the output ends of the at least two board-level power units are connected to the output interface in parallel, so that each board-level power unit provides the working voltage of the corresponding external electric device to the output interface.
6. A power management method based on the power management device of any one of claims 1 to 5, comprising:
s0: storing the working voltage of an external power utilization device by using an interface controller in advance;
s1: providing an output voltage to an output interface by using a power converter;
s2: the interface controller is used for detecting the output voltage provided by the power converter to the output interface, judging the relation between the output voltage and the working voltage of the external electric device, and controlling the output interface to disconnect the power converter from the external electric device when the output voltage is greater than the working voltage of the external electric device.
7. The method of claim 6,
the step S0 further includes: pre-storing the maximum load voltage of the power converter by using an interface controller;
after the step S0, before the step S1, the method further includes:
acquiring input voltage provided by an external power supply through an input interface by using a power converter;
the step S2 further includes:
and detecting the input voltage provided by the external power supply to the input interface by using the interface controller, and controlling the input interface to disconnect the external power supply from the power converter when the input voltage is greater than the maximum load voltage of the power converter.
8. The method according to claim 7, wherein after the step S2, the method further comprises:
b1: respectively sending the working voltage of the external power utilization device and the detected input voltage and output voltage to the signal feedback unit by using an interface controller;
b2: when the received output voltage is not equal to the working voltage of the external electric device, the signal feedback unit is used for sending a pulse width modulation signal to the power converter according to the working voltage of the external electric device, the received input voltage and the received output voltage;
b3: and providing the working voltage corresponding to the external electric device to the output interface by using the power converter according to the received pulse width modulation signal.
9. The method of claim 8,
the step B1, further comprising: sending the maximum load voltage of the power converter to a signal feedback unit by using an interface controller;
after the step B1, before the step B2, the method further comprises:
when the power converter and an external power supply are in a disconnected state and the input voltage is not greater than the maximum load voltage of the power converter, sending a first starting signal to the interface controller;
when the interface controller receives a first starting signal, the interface controller controls the input interface to be communicated with an external power supply and a power supply converter;
after the step B2, before the step B3, the method further comprises:
when the power converter and the external power consumption device are in a disconnected state and the output voltage is equal to the working voltage of the external power consumption device, sending a second starting signal to the interface controller;
and when the interface controller receives the second starting signal, the output interface is controlled to be communicated with the external power utilization device and the power supply converter.
10. An electronic device, comprising:
the power management device and at least one powered device of any of claims 1 to 5, wherein each powered device is connected to the power management device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610261433.1A CN105846401A (en) | 2016-04-25 | 2016-04-25 | Power management device and method, and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610261433.1A CN105846401A (en) | 2016-04-25 | 2016-04-25 | Power management device and method, and electronic device |
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| CN105846401A true CN105846401A (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610261433.1A Pending CN105846401A (en) | 2016-04-25 | 2016-04-25 | Power management device and method, and electronic device |
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| CN114430188A (en) * | 2021-12-22 | 2022-05-03 | 深圳市正浩创新科技股份有限公司 | Power supply device identification method, electronic device and storage medium |
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Application publication date: 20160810 |