CN112947671B - Power manager and power management system - Google Patents
Power manager and power management system Download PDFInfo
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- CN112947671B CN112947671B CN202110167483.4A CN202110167483A CN112947671B CN 112947671 B CN112947671 B CN 112947671B CN 202110167483 A CN202110167483 A CN 202110167483A CN 112947671 B CN112947671 B CN 112947671B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
Abstract
The power supply manager enables at least two power supply inputs to supply power for one electric device; or to cause the plurality of power inputs to power the plurality of powered devices. It executes: s1, increasing the first charging parameter according to the first parameter interval; obtaining first input power according to the first voltage and the first current; s2, increasing the first charging parameter according to the first parameter interval, obtaining second input power according to the first voltage and the first current, and executing the step S3; s3, when the second input power is larger than the first input power, taking the second input power as a new first input power, and executing the step S2; when the second input power is smaller than the first input power, the second input power is used as a new first input power, and step S4 is executed; s4, reducing the first charging parameter according to the second parameter interval, obtaining third input power according to the first voltage and the first current, taking the third input power as new second input power, and executing the step S3; and realizing power adaptive tracking.
Description
Technical Field
The invention relates to the technical field of power management, in particular to a power manager and a power management system.
Background
In the prior art, in order to use electric energy in places such as outdoors and outdoors, portable power generation equipment such as a solar panel and a hand generator is often used for supplying electric energy, however, the output power of the power generation equipment is unstable, and the electric equipment cannot be charged smoothly, so that improvement of the technical problem is urgently needed.
Disclosure of Invention
The embodiment of the invention provides a power supply manager and a power supply management system, which can meet the requirement of stable power supply of electric equipment.
In a first aspect, an embodiment of the present invention provides a power manager, where the power manager includes at least one power input terminal for connecting to a power supply device and at least one power output terminal for connecting to an electrical device, and the power manager is configured to perform power management on at least one power supply device and at least one electrical device;
when the power supply manager is in a single-output power self-adaptive single-input power supply working mode, the input end of the power supply manager is at least connected with first power supply equipment, and the output end of the power supply manager is at least connected with first electric equipment; the power manager is configured to perform:
s1, after increasing a first charging parameter of the first power supply device to the first electric device according to a first parameter interval, the first charging parameter is a charging voltage or a charging current; detecting a first voltage and a first current input into the power supply manager by the first power supply equipment to obtain a first input power of the power supply manager;
S2, increasing the first charging parameter again according to the first parameter interval, detecting the first voltage and the first current to obtain a second input power of the power manager, and executing the step S3;
s3, when the second input power is larger than the first input power, taking the second input power as a new first input power, and executing the step S2; when the second input power is smaller than the first input power, taking the second input power as a new first input power, and executing step S4;
s4, after the first charging parameter is reduced according to a second parameter interval, detecting the first voltage and the first current to obtain a third input power of the power manager, taking the third input power as a new second input power, and executing the step S3.
Optionally, when the power supply manager is in a single-output power self-adaptive dual-input power supply working mode, the input end of the power supply manager is further connected with at least a second power supply device; after the power manager adaptively controls the first power supply device by using the method corresponding to step S1 to step S4, the power manager is further configured to:
And performing adaptive control on the second power supply equipment along with the input of the first power supply equipment to the first electric equipment, so that the input of the second power supply equipment to the first electric equipment is adaptive to the input of the first power supply equipment to the first electric equipment.
Optionally, the adaptively controlling the second power supply device following the input of the first power supply device to the first electrical device includes:
s5, after a second charging parameter of the first electric device by the second electric device is increased according to a third parameter interval, the second charging parameter is a charging voltage or a charging current; detecting a second voltage and a second current input into the power manager by the second power supply device to obtain a fourth input power of the power manager;
s6, increasing the second charging parameter again according to the third parameter interval, detecting the second voltage and the second current to obtain a fifth input power of the power manager, and executing a step S7;
s7, when the fifth input power is larger than the fourth input power, taking the fifth input power as a new fourth input power, and executing the step S6; when the fifth input power is smaller than the fourth input power, taking the fifth input power as a new fourth input power, and executing step S8;
S8, after the second charging parameter is reduced according to a fourth parameter interval, detecting the second voltage and the second current to obtain a sixth input power of the power manager, taking the sixth input power as a new fifth input power, and executing the step S7.
Optionally, the power manager comprises:
a first input voltage current detection module for detecting the first voltage and the first current;
the first power control module is used for transmitting the first voltage and the first current to a PWM control module and controlling the power input into the first electric equipment by the first power supply equipment under the control of the PWM control module;
a first output voltage and current detection module for detecting the first charging parameter;
the PWM control module is used for controlling the operation of the first power control module according to the first charging parameter, the first voltage and the first current.
Optionally, the power manager further comprises:
a second input voltage current detection module for detecting the second voltage and the second current;
the second power control module is used for transmitting the second voltage and the second current to the PWM control module and controlling the power input into the first electric equipment by the second power supply equipment under the control of the PWM control module;
The second output voltage and current detection module is used for detecting the second charging parameter;
the PWM control module is further configured to control operation of the second power control module according to the second charging parameter, the second voltage, and the second current.
Optionally, the power manager is further configured to perform:
and when the fifth input power is smaller than the fourth input power, controlling the first electric equipment to supply power to the second power supply equipment for a short time.
Optionally, the power manager further comprises:
a second energy storage and storage control module, configured to, when the fifth input power is smaller than the fourth input power, perform short-time power supply on the second power supply device by using the electric energy of the first electric device under the control of the second power control module;
the second power control module is further used for controlling the second energy storage and storage control module to work under the control of the PWM control module.
Optionally, the power manager is further configured to perform:
and when the second input power is smaller than the first input power, controlling the first electric equipment to supply power to the first power supply equipment for a short time.
Optionally, the power manager further comprises:
the first energy storage and storage control module is used for performing short-time power supply on the first power supply equipment by using the electric energy of the first electric equipment under the control of the first power control module when the second input power is smaller than the first input power;
the first power control module is further used for controlling the first energy storage and storage control module to work under the control of the PWM control module.
In a second aspect, an embodiment of the present invention provides a power management system, including the power manager described in the first aspect, at least one power supply device, and at least one power consumption device.
In the embodiment of the invention, the power supply manager comprises at least one power supply input end used for being connected with the power supply equipment and at least one power supply output end used for being connected with the electric equipment, and the power supply manager is used for carrying out power supply management on the at least one power supply equipment and the at least one electric equipment; when the power supply manager is in a single-output power self-adaptive single-input power supply working mode, the input end of the power supply manager is at least connected with first power supply equipment, and the output end of the power supply manager is at least connected with first electric equipment; the power manager is to perform: s1, increasing a first charging parameter of the first power supply device to the first electric device according to the first parameter interval, wherein the first charging parameter is charging voltage or charging current; detecting a first voltage and a first current input into a power supply manager by a first power supply device to obtain a first input power of the power supply manager; s2, increasing the first charging parameter again according to the first parameter interval, detecting the first voltage and the first current to obtain a second input power of the power manager, and executing the step S3; s3, when the second input power is larger than the first input power, taking the second input power as a new first input power, and executing the step S2; when the second input power is smaller than the first input power, the second input power is used as a new first input power, and step S4 is executed; s4, after the first charging parameter is decreased according to the second parameter interval, detecting the first voltage and the first current to obtain a third input power of the power manager, taking the third input power as a new second input power, and performing step S3. By using the control method of the single-output power self-adaptive single-input power supply working mode, the power self-adaptive tracking of at least one power supply device and at least one electric device can be realized, and the maximum power output can be stably provided for the electric device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power management system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an adaptive flow of a power management system according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another power management system provided in the embodiment of the present invention;
fig. 4 is a schematic diagram illustrating an adaptive flow of a second power supply device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an adaptive flow of another power management system according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
It should be understood that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by the person skilled in the art that the described embodiments of the invention can be combined with other embodiments.
In the application, the electric equipment comprises a storage battery, a mobile phone, a computer and other terminal equipment. And the power supply equipment comprises a solar panel, a hand-operated generator set, a fuel cell, a vehicle-mounted power supply and other direct-current power generation devices. The power output of the power supply equipment is not constant and can be changed randomly, and in addition, at least 2 power generation devices supply power for high-power electric equipment in a power superposition mode and at least 2 power supply equipment supply power for the electric equipment. Therefore, in order to meet the requirement of stable charging of the electrical equipment, an embodiment of the present application provides a rasterized power manager, which provides an input/output maximum power point tracking technology and can provide maximum power output for the electrical equipment. In other words, the power adaptive direct current power supply grid power manager can enable not less than two power supply inputs to supply power for one electric device; or to cause the plurality of power inputs to power the plurality of powered devices.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a power management system according to an embodiment of the present invention; in fig. 1, the power management system includes a power manager 101, at least one power supply device (e.g., a first power supply device 103), and at least one powered device (e.g., a first powered device 107). The power manager 101 includes at least one power input terminal for connecting with a power supply device and at least one power output terminal for connecting with an electrical device, and the power manager 101 is configured to perform power management on at least one power supply device and at least one electrical device. When the power supply manager 101 is in a single-output power self-adaptive single-input power supply working mode, the input end of the power supply manager 101 is at least connected with a first power supply device 103, and the output end of the power supply manager 101 is at least connected with a first electric device 107; referring to fig. 2, fig. 2 is a schematic diagram illustrating an adaptive flow of a power management system according to an embodiment of the present invention; the power manager 101 is configured to perform:
s1, increasing a first charging parameter of the first power supply device to the first electric device according to the first parameter interval, wherein the first charging parameter is charging voltage or charging current; detecting a first voltage and a first current input into a power supply manager by a first power supply device to obtain a first input power of the power supply manager;
Specifically, when power adaptation is performed on the first power supply device 103 and the first electrical device 107, the first charging parameter of the first power supply device 103 to the first electrical device 107 starts to be increased according to the first parameter interval, that is, the first power supply device 103 inputs the charging voltage U or the charging current I of the first electrical device 107 after passing through the power manager 101, and at this time, the output power Po ═ U ═ I of the power manager 101 is also increased. The first voltage U1 and the first current I1 inputted to the power manager 101 from the first power supply device 103 at this time are detected againThe first voltage U1 and the first current I1 obtain a first input power P 1 into ＝U1*I1。
In particular, it is determined whether the first charging parameter to be adjusted is the charging voltage or the charging current according to the power demand of the first electrical device 107; when the first electric device 107 needs to perform constant voltage charging, the charging current of the first electric device 107 by the first power supply device 103 is adjusted during adaptive adjustment. On the contrary, when the first electric device 107 needs to perform constant current charging, at this time, during adaptive adjustment, the charging voltage of the first electric device 107 by the first power supply device 103 is adjusted.
The specific size of the first parameter interval may be set according to actual needs, for example, set to 0.01V, 0.001V, or set to 0.01A, 0.001A.
S2, increasing the first charging parameter again according to the first parameter interval, detecting the first voltage and the first current to obtain a second input power of the power manager, and executing the step S3;
specifically, next, on the basis of the charging voltage or the charging current adjusted in step S1, the first charging parameter is increased again according to the first parameter interval, and correspondingly, when the charging voltage is adjusted in step S1, step S2 continues to adjust the charging voltage; likewise, when step S1 is adjusting the charging current, step S2 continues adjusting the charging current. Similarly, after the first charging parameter is adjusted, the first voltage and the first current are continuously detected to obtain the second input power P In 2 。
S3, when the second input power is larger than the first input power, taking the second input power as a new first input power, and executing the step S2; when the second input power is smaller than the first input power, the second input power is used as a new first input power, and step S4 is executed;
specifically, the first input power P is then compared 1 to And a second input power P In 2 When the second input power P In 2 Greater than the first input power P 1 to Then the second input power P is applied 2 into As new first input power P 1 to And executing step S2 to checkBased on the measured charging voltage U or charging current I, the value of the charging voltage U or charging current I is continuously increased, so that the output power of the power manager 101 is increased. When the second input power P In 2 Less than the first input power P 1 to Then the second input power P is applied In 2 As new first input power P 1 to And step S4 is executed to continue to decrease the value of the charging voltage U or the charging current I on the basis of the detected charging voltage U or charging current I, so that the output power of the power manager 101 is decreased.
S4, after the first charging parameter is decreased according to the second parameter interval, detecting the first voltage and the first current to obtain a third input power of the power manager, taking the third input power as a new second input power, and performing step S3.
Specifically, the specific value of the second parameter interval may also be set according to actual needs, and is not particularly limited, but the value of the second parameter interval needs to be larger than the value of the first parameter interval, for example, the second parameter interval is set to 0.01V, 0.1V, or 0.01A, 0.1A corresponding to the first parameter interval. Decreasing the first charging parameter according to the second parameter interval, wherein when the charging voltage is adjusted at step S2, the charging voltage is adjusted at step S4; likewise, when the charging current is adjusted in step S2, the charging current is adjusted in step S4. After the first charging parameter is decreased, the first voltage and the first current are continuously detected to obtain the third input power of the power manager 101, and the third input power is taken as the new second input power, and then step S3 is executed.
In summary, the principle of the single-output power adaptive single-input power supply operating mode is as follows: a small power variation (the corresponding adjustment amount is a first parameter interval) is introduced into the system, the charging current is finely adjusted if the electric equipment needs constant-voltage charging, and the charging voltage is finely adjusted if the electric equipment needs constant-current charging, so that the output power variation is adjusted; and meanwhile, the input power change value is detected, the output power is changed step by step through a proper algorithm, the input power output is tracked, and a power self-adaptive negative feedback system is formed. When the input power reaches the maximum power point, the adjustment strategy is changed, so that the system is in a relatively stable working state, and the system is in a maximum power output state. By using the method, the output power can be self-adapted to the input power, the power following is realized, and the maximum power output is stably provided for the electric equipment.
In one possible embodiment, referring to fig. 1, the power manager 101 comprises:
a first input voltage current detection module 104 for detecting a first voltage and a first current; the first input voltage and current detection module 104 is responsible for performing voltage and current detection and analog-to-digital conversion to obtain digital signals of the first voltage and the first current.
A first power control module 105, configured to transmit the first voltage and the first current to the PWM control module 108, and control the first power supply device 103 to input the power of the first electric device 107 under the control of the PWM control module 108;
a first output voltage current detection module 106 for detecting a first charging parameter;
a PWM control module 108 for controlling operation of the first power control module 105 based on the first charging parameter, the first voltage, and the first current.
Specifically, the PWM control module 108 controls the first power control module 105 to adjust the charging voltage and the charging current by PWM when detecting that the charging voltage and the charging current are higher or lower. In addition, the PWM control module 108 may receive signals input by other modules and control the operations of other modules, thereby implementing an adaptive control function for operating modes such as a single-output power adaptive single-input power mode.
In one possible embodiment, the power manager 101 is further configured to perform:
and when the second input power is smaller than the first input power, controlling the first electric equipment to supply power to the first power supply equipment for a short time.
Specifically, when the second input power is smaller than the first input power, the power supply device cannot bear a heavy load, and an instantaneous voltage drop will occur, and in a serious case, the entire power management system will be powered down, so that, to avoid the power down, the power manager 101 controls the first power device 107 to supply power to the first power device 103 for a short time.
Further, the power manager 101 further includes:
the first energy storage and storage control module 102 is used for performing short-time power supply on the first power supply device 103 by using the electric energy of the first electric device 107 under the control of the first power control module 105 when the second input power is smaller than the first input power;
the first power control module 105 is further configured to control the operation of the first energy storage and storage control module 102 under the control of the PWM control module 108.
Specifically, if the second input power is smaller than the first input power, and the first power supply device 103 cannot bear a heavy load, which may cause a transient voltage drop, the power manager 101 is provided with a first energy storage and power storage control module 102, which is used for storing energy and storing power and supplying power to the first power supply device for a short time. The power supply manager feeds back to the input through the power storage loop, so that the input voltage of the power supply manager is maintained at a value required by the equipment for a short time, meanwhile, the charging current is reduced, the output power is correspondingly reduced, the output power at the moment is tested, and a new round of automatic power tracking adjustment is started on the basis.
Particularly, the principle of the working mode of the double-output power self-adaptive double-input power supply is the same as that of the working mode of the single-output power self-adaptive single-input power supply, the adjustment process is the same, and two paths are respectively adjusted and respectively output in a self-adaptive mode at different places. For example, it is assumed that the input end of the power manager is connected to the first power supply device and the second power supply device, respectively, and the output end of the power manager is connected to the first power consumption device, and adaptive control is performed on the first power supply device and the second power supply device, respectively, to implement dual-output power adaptive dual-input power supply.
And for the working mode of the single-output power self-adaptive double-input power supply, the working principle is as follows: one path adopts a single-output power self-adaptive single-input power supply working mode to carry out self-adaptive control, and the other path adopts a control mode following the previous path to realize self-adaptation of the output of the previous path.
Further, in a possible embodiment, referring to fig. 3, fig. 3 is a schematic structural diagram of another power management system provided in an embodiment of the present invention; when the power manager 101 is in a single-output power self-adaptive dual-input power working mode, the input end of the power manager 101 is also at least connected with a second power supply device 301; after the power manager 101 adaptively controls the first power supply apparatus 103 by using the method corresponding to step S1 to step S4, the power manager 101 is further configured to:
the adaptive control is performed on the second power supply device 301 following the input of the first power supply device 103 to the first electric device 107, so that the adaptive control of the input of the second power supply device 301 to the first electric device 107 to the input of the first power supply device 103 to the first electric device 107 is realized.
Specifically, if the first power supply device 103 adopts a constant voltage output mode (i.e., the first electrical device 107 is in a constant voltage charging mode), the power manager 101 adjusts the output power by changing the magnitude of the charging current of the first power supply device 103 to the first electrical device 107. At this time, the second power supply device 301 may implement adaptation of the input of the first power supply device 103 to the first electric device 107 by adopting a current following control mode (i.e., a constant current output mode) or a voltage following control mode (i.e., a constant voltage output mode), and implement common output with the first channel. In another case, when the first power supply device 103 adopts a constant current output mode (i.e., the first electrical device 107 is in a constant current charging mode), the power manager 101 adjusts the output power by changing the magnitude of the charging voltage of the first power supply device 103 to the first electrical device 107. At this time, the second power supply device 301 may implement adaptation of the input of the first power supply device 103 to the first electric device 107 by adopting a current following control mode (i.e., a constant current output mode) or a voltage following control mode (i.e., a constant voltage output mode), and implement common output with the first channel.
In a possible embodiment, referring to fig. 4, fig. 4 is a schematic diagram of an adaptive flow of a second power supply device according to an embodiment of the present invention; the above adaptive control of the second power supply apparatus following the input of the first power supply apparatus to the first electric apparatus includes:
s5, increasing a second charging parameter of the first electric equipment by the second power supply equipment according to the third parameter interval, wherein the second charging parameter is charging voltage or charging current; detecting a second voltage and a second current input into the power supply manager by the second power supply equipment to obtain a fourth input power of the power supply manager;
specifically, the specific value of the third parameter interval may be set according to actual needs, and the third parameter interval may be the same as or different from the first parameter interval, and is not particularly limited. Similarly to the adaptive control process of the first power supply device, after the adaptive control is started, the second charging parameter of the second power supply device to the first power supply device is increased according to the third parameter interval, for example, the second power supply device 301 inputs the charging voltage or the charging current of the first power supply device 107 after passing through the power manager 101, and then the second voltage and the second current input to the power manager by the second power supply device are detected to obtain the fourth input power P of the power manager In 4 。
S6, increasing the second charging parameter again according to the third parameter interval, detecting the second voltage and the second current to obtain a fifth input power of the power manager, and executing the step S7;
specifically, the second charging parameter is increased again according to the third parameter interval, and the second voltage and the second current are detected to obtain the fifth input power P 5 into Then, step S7 is executed.
S7, when the fifth input power is larger than the fourth input power, taking the fifth input power as a new fourth input power, and executing the step S6; when the fifth input power is smaller than the fourth input power, the fifth input power is used as a new fourth input power, and step S8 is executed;
specifically, next, the fifth input power P is compared 5 into And a fourth input power P In 4 When the fifth input power P 5 into Greater than the fourth input power P In 4 Then the fifth input power P is applied 5 into As new fourth input power P In 4 And performing step S6 on the detected pair of the second power supply apparatusesAnd continuously increasing the value of the charging voltage or the charging current on the basis of the charging voltage or the charging current of the electric equipment. When the fifth input power P 5 into Less than fourth input power P Go into 4 Then the fifth input power P is applied Go into 5 As new fourth input power P In 4 And step S8 is executed to continue to decrease the value of the charging voltage or the charging current on the basis of the detected charging voltage or charging current of the second power supply device to the first power supply device.
And S8, after the second charging parameter is reduced according to the fourth parameter interval, detecting a second voltage and a second current to obtain a sixth input power of the power manager, taking the sixth input power as a new fifth input power, and executing the step S7.
Specifically, the specific value of the fourth parameter interval may also be set according to actual needs, and is not particularly limited, however, the value of the fourth parameter interval needs to be greater than the value of the third parameter interval. The fourth parameter interval and the second parameter interval may be the same or different.
To further illustrate the single-output power adaptive dual-input power supply operation mode, referring to fig. 3 and fig. 5, fig. 5 is a schematic diagram of an adaptive flow of another power management system according to an embodiment of the present invention; the first power supply loop is a loop where the first power supply device 103 is located, and the second power supply loop is a loop where the second power supply device 301 is located. The first path is taken as a constant current output control mode, and the second path is taken as a constant voltage output control mode for explanation:
Step 1: during the adaptive operation, the charging voltage U, Po ═ U × I of the first power supply device 103 to the first electrical device 107 starts to increase automatically.
And 2, step: the first voltage U1 and the first current I1 of the first power supply device 103 input to the power manager 101 at this time are detected, and the first input power P is calculated 1 to ＝U1*I1。
And step 3: increasing the charging voltage U of the first power supply device 103 to the first electrical device 107 again, and detecting the first voltage U1 and the first current I1 to obtain the second input power P In 2 This time detecting the second input of the first wayPower P In 2 And the last detected first input power P 1 to Making a comparison if P In 2 >P 1 to Step 4 is executed, otherwise step 5 is executed.
And 4, step 4: and on the basis of the detected charging voltage U of the first path, continuously increasing the voltage U value to increase the output power.
And 5: and on the basis of the detected charging voltage U of the first path, continuously reducing the voltage U value to reduce the output power.
Step 6: the increase of the charging current I, Po ═ U × I of the second power supply device 301 to the first electrical device 107 is automatically started.
And 7: the second voltage U2 and the second current I2 inputted to the power manager 101 from the second power supply device 301 at this time are detected, and the fourth input power P is calculated Go into 4 ＝U2*I2。
And 8: increasing the charging current I of the second power supply device 301 to the first electrical device 107 again, and detecting the second voltage U2 and the second current I2 to obtain the fifth input power P 5 into Detecting the second path power P this time 5 into And the last detected power P In 4 Making a comparison if P 5 into >P In 4 Step 9 is executed, otherwise step 10 is executed.
And step 9: on the basis of the detected charging current of the second power supply apparatus 301 to the first electric apparatus 107, the current value is continuously increased so that the output power is increased.
Step 10: on the basis of the detected charging current of the second power supply apparatus 301 to the first electric apparatus 107, the current value continues to be reduced so that the output power is reduced.
In the embodiment of the invention, for the working mode of the single-output power self-adaptive double-input power supply, one path adopts the working mode of the single-output power self-adaptive single-input power supply to carry out self-adaptive control, and the other path adopts the control mode following the previous path to realize the self-adaptation of the output of the previous path, so that the self-adaptive single-output power of the double-output power supply can be realized.
In one possible embodiment, referring to fig. 3, the power manager 101 further comprises:
a second input voltage current detection module 302 for detecting a second voltage and a second current;
A second power control module 303, configured to transmit the second voltage and the second current to the PWM control module 108, and control the second power supply device 301 to input the power of the first electrical device 107 under the control of the PWM control module 108;
a second output voltage current detection module 304 for detecting a second charging parameter;
the PWM control module 108 is further configured to control the operation of the second power control module 303 according to the second charging parameter, the second voltage, and the second current.
Specifically, the working principle of the loop in which the second power supply device 301 is located is the same as that of the loop in which the first power supply device 103 is located, and is not described again.
In one possible embodiment, the power manager 101 is further configured to perform:
and when the fifth input power is smaller than the fourth input power, controlling the first electric equipment to supply power to the second power supply equipment for a short time.
Specifically, similarly to the loop of the first power supply device 103, the loop of the second power supply device 301 is also provided with a short-time power supply mechanism to avoid power failure of the power management system under high load.
In one possible embodiment, referring to fig. 3, the power manager 101 further comprises:
a second energy storage and storage control module 305, configured to, when the fifth input power is smaller than the fourth input power, perform short-time power supply on the second power supply device 301 by using the electric energy of the first electric device 107 under the control of the second power control module 303;
The second power control module 303 is further configured to control the operation of the second energy storage and storage control module 305 under the control of the PWM control module 108.
Specifically, the working principle of the second energy storage and storage control module 305 is the same as that of the first energy storage and storage control module 102, and is not described in detail again.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A power manager is characterized in that the power manager comprises at least one power input end used for being connected with power supply equipment and at least one power output end used for being connected with electric equipment, and the power manager is used for performing power management on the at least one power supply equipment and the at least one electric equipment;
when the power supply manager is in a single-output power self-adaptive single-input power supply working mode, the input end of the power supply manager is at least connected with first power supply equipment, and the output end of the power supply manager is at least connected with first electric equipment; the power manager is configured to perform:
s1, after increasing a first charging parameter of the first power supply device to the first electric device according to a first parameter interval, the first charging parameter is a charging voltage or a charging current; detecting a first voltage and a first current input into the power supply manager by the first power supply equipment to obtain a first input power of the power supply manager;
S2, increasing the first charging parameter again according to the first parameter interval, detecting the first voltage and the first current to obtain a second input power of the power manager, and executing the step S3;
s3, when the second input power is larger than the first input power, taking the second input power as a new first input power, and executing the step S2; when the second input power is smaller than the first input power, taking the second input power as a new first input power, and executing step S4;
s4, after the first charging parameter is reduced according to a second parameter interval, detecting the first voltage and the first current to obtain a third input power of the power manager, taking the third input power as a new second input power, and executing the step S3.
2. The power supply manager according to claim 1, wherein when the power supply manager is in a single-output power adaptive dual-input power supply operating mode, the input terminal of the power supply manager is further connected with at least a second power supply device; after the power manager adaptively controls the first power supply device by using the method corresponding to step S1 to step S4, the power manager is further configured to:
And performing adaptive control on the second power supply equipment along with the input of the first power supply equipment to the first electric equipment, so that the input of the second power supply equipment to the first electric equipment is adaptive to the input of the first power supply equipment to the first electric equipment.
3. The power manager of claim 2, wherein said adaptively controlling the second power supply device following the input of the first power supply device to the first powered device comprises:
s5, after a second charging parameter of the first electric device by the second electric device is increased according to a third parameter interval, the second charging parameter is a charging voltage or a charging current; detecting a second voltage and a second current input into the power manager by the second power supply device to obtain a fourth input power of the power manager;
s6, increasing the second charging parameter again according to the third parameter interval, detecting the second voltage and the second current to obtain a fifth input power of the power manager, and executing a step S7;
s7, when the fifth input power is larger than the fourth input power, taking the fifth input power as a new fourth input power, and executing the step S6; when the fifth input power is smaller than the fourth input power, taking the fifth input power as a new fourth input power, and executing step S8;
S8, after the second charging parameter is reduced according to a fourth parameter interval, detecting the second voltage and the second current to obtain a sixth input power of the power manager, taking the sixth input power as a new fifth input power, and executing the step S7.
4. The power manager of claim 3, wherein the power manager comprises:
a first input voltage current detection module for detecting the first voltage and the first current;
the first power control module is used for transmitting the first voltage and the first current to a PWM control module and controlling the power input into the first electric equipment by the first power supply equipment under the control of the PWM control module;
a first output voltage and current detection module for detecting the first charging parameter;
the PWM control module is used for controlling the operation of the first power control module according to the first charging parameter, the first voltage and the first current.
5. The power manager of claim 4, further comprising:
a second input voltage current detection module for detecting the second voltage and the second current;
The second power control module is used for transmitting the second voltage and the second current to the PWM control module and controlling the power input into the first electric equipment by the second power supply equipment under the control of the PWM control module;
the second output voltage and current detection module is used for detecting the second charging parameter;
the PWM control module is further configured to control operation of the second power control module according to the second charging parameter, the second voltage, and the second current.
6. The power manager of claim 5, wherein the power manager is further configured to perform:
and when the fifth input power is smaller than the fourth input power, controlling the first electric equipment to supply power to the second power supply equipment for a short time.
7. The power manager of claim 6, further comprising:
a second energy storage and storage control module, configured to, when the fifth input power is smaller than the fourth input power, perform short-time power supply on the second power supply device by using the electric energy of the first electric device under the control of the second power control module;
The second power control module is further used for controlling the second energy storage and storage control module to work under the control of the PWM control module.
8. The power manager according to any of claims 4 to 7, wherein the power manager is further configured to perform:
and when the second input power is smaller than the first input power, controlling the first electric equipment to supply power to the first power supply equipment for a short time.
9. The power manager of claim 8, further comprising:
the first energy storage and storage control module is used for performing short-time power supply on the first power supply equipment by using the electric energy of the first electric equipment under the control of the first power control module when the second input power is smaller than the first input power;
the first power control module is further used for controlling the first energy storage and storage control module to work under the control of the PWM control module.
10. A power management system comprising the power manager of any of claims 1 to 9, at least one power supply device and at least one power consuming device.
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| EP0762593A3 (en) * | 1995-08-25 | 1998-08-19 | Rayovac Corporation | Battery management circuit and method for controlling the in-circuit charge and discharge of series-connected rechargeable electrochemical cells |
| US20160094080A1 (en) * | 2014-09-29 | 2016-03-31 | Chervon Intellectual Property Limited | Charging system and charging method thereof and battery pack |
| CN105680491B (en) * | 2014-11-18 | 2018-07-06 | 李文杰 | A kind of control method of charging equipment output power and intelligent charge equipment |
| WO2018201299A1 (en) * | 2017-05-02 | 2018-11-08 | 深圳市大疆创新科技有限公司 | Battery management system, charging apparatus, and charging method |
| CN111404281B (en) * | 2020-04-30 | 2022-04-15 | 深圳赫兹创新技术有限公司 | Wireless charging efficiency optimization method and device |
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