CN108011498B - Power supply method and device for electrical equipment - Google Patents
Power supply method and device for electrical equipment Download PDFInfo
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- CN108011498B CN108011498B CN201610955560.1A CN201610955560A CN108011498B CN 108011498 B CN108011498 B CN 108011498B CN 201610955560 A CN201610955560 A CN 201610955560A CN 108011498 B CN108011498 B CN 108011498B
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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
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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
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/008—Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators
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Abstract
The present disclosure relates to a power supply method and apparatus for an electrical device. The electrical device comprises a plurality of functional modules. The electrical device is powered by a plurality of power modules having different output voltages. The method comprises the following steps: setting the output voltage of each power supply module respectively so that the output voltage of each power supply module is in an interval formed by the input voltages of the plurality of functional modules; determining a power supply module corresponding to each functional module according to the input voltage of each functional module and the output voltage of each power supply module, wherein when each functional module is powered by the corresponding power supply module, the conversion efficiency of the power supply is higher than that when other power supply modules are powered; and each functional module is respectively controlled to be powered by the corresponding power supply module. Therefore, compared with the condition that the input voltages of all the functional modules are supplied by the same power supply voltage, the conversion efficiency of the power supply can be improved, so that the service time of the power supply is prolonged, the heat productivity of electrical equipment is reduced, and resources are saved.
Description
Technical Field
The present disclosure relates to the field of electrical control, and in particular, to a power supply method and apparatus for an electrical device.
Background
With the development of electronic technology, new functions in electrical equipment are diversified, and the performance of a power supply in the equipment is not greatly improved.
This is because, in the related art, on the one hand, the use time of the power supply can be increased by increasing the energy density of the cell, but the energy density of the cell has reached the upper limit at present. On the other hand, the service life of the power supply can be prolonged by increasing the number of the battery cells, which means that the area of a Printed Circuit Board (PCB) must be reduced to make more space for the power supply, but the area of the PCB that can be reduced is very limited.
Therefore, the cruising ability of the power supply is becoming a bottleneck restricting the development of the electrical equipment.
Disclosure of Invention
The purpose of the present disclosure is to provide a simple and efficient power supply method and apparatus for electrical equipment.
In order to achieve the above object, the present disclosure provides a power supply method for an electrical device. The electrical device includes a plurality of functional modules, and the electrical device is supplied with power from a plurality of power modules having different output voltages. The method comprises the following steps: setting the output voltage of each power supply module respectively so that the output voltage of each power supply module is in an interval formed by the input voltages of the plurality of functional modules; determining a power supply module corresponding to each functional module according to the input voltage of each functional module and the output voltage of each power supply module, wherein when each functional module is powered by the corresponding power supply module, the conversion efficiency of the power supply is higher than that when other power supply modules are powered; and each functional module is respectively controlled to be powered by the corresponding power supply module.
The step of determining the power supply module corresponding to each functional module according to the input voltage of each functional module and the output voltage of each power supply module includes: when the input voltage of a functional module is smaller than the output voltage of the power module with the minimum output voltage, determining the power module with the minimum output voltage as a corresponding power module; when the input voltage of a functional module is greater than the output voltage of the power module with the maximum output voltage, determining the power module with the maximum output voltage as a corresponding power module; when the input voltage of a functional module is between the output voltages of two power modules, the corresponding power module is determined according to an experimental method.
Optionally, the step of separately controlling each functional module to be powered by a corresponding power module includes: controlling one or more balancing functional modules of the plurality of functional modules to be powered by the plurality of power supply modules; and controlling other functional modules to be powered by the corresponding power supply modules.
Optionally, the step of controlling one or more balancing functional modules of the plurality of functional modules to be powered by the plurality of power supply modules comprises: detecting the residual electric quantity of the plurality of power supply modules; when the residual electric quantity of the plurality of power supply modules is larger than a preset first electric quantity threshold value and the difference between the residual electric quantities of two power supply modules is larger than a preset first difference threshold value, controlling the one or more balance function modules to be powered only by the power supply module with the largest residual electric quantity; and when the residual electric quantity of the plurality of power supply modules is larger than the first electric quantity threshold value and the difference between the residual electric quantities of any two power supply modules is smaller than the first difference threshold value, controlling the one or more balance function modules to be only supplied with power by the corresponding power supply module.
Optionally, the step of controlling one or more balancing functional modules of the plurality of functional modules to be powered by the plurality of power supply modules further comprises: when the residual capacity of the power module with the least residual capacity is smaller than the first capacity threshold and the difference between the residual capacities of two power modules is larger than a preset second difference threshold, controlling the one or more balance function modules to be powered only by the power module with the most residual capacity, wherein the first difference threshold is larger than the second difference threshold; and when the residual electric quantity of the power supply module with the least residual electric quantity is smaller than the first electric quantity threshold value and the difference between the residual electric quantities of any two power supply modules is smaller than the second difference threshold value, controlling the one or more balance function modules to be only supplied with power by the corresponding power supply module.
The present disclosure also provides a power supply apparatus for an electrical device including a plurality of functional modules. The electrical apparatus is powered by a plurality of power modules having different output voltages, the apparatus comprising: a setting module for setting an output voltage of each power supply module, respectively, so that the output voltage of each power supply module is in an interval formed by input voltages of the plurality of functional modules; the determining module is used for determining the power supply module corresponding to each functional module according to the input voltage of each functional module and the output voltage of each power supply module, wherein when each functional module is powered by the corresponding power supply module, the conversion efficiency of the power supply is higher than that when other power supply modules are powered; and the control module is used for respectively controlling each functional module to be powered by the corresponding power supply module.
Through above-mentioned technical scheme, set up by a plurality of power module of output voltage diverse for electrical equipment power supply, wherein, when every functional module is supplied power by corresponding power module, the conversion efficiency of power is high when being supplied power by other power module. Therefore, compared with the mode that the input voltage of all the functional modules is supplied by the same power supply voltage, the conversion efficiency of the power supply can be improved, the service life of the power supply is prolonged, the heat productivity of electrical equipment is reduced, and resources are saved.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a flow chart of a method for powering an electrical device provided by an exemplary embodiment;
FIG. 2 is a flow chart of a method for powering an electrical device provided by another exemplary embodiment;
FIG. 3 is a flow diagram for controlling the powering of a balancing function provided by an exemplary embodiment;
FIG. 4 is a flow diagram of a control balancing function module provided in another exemplary embodiment;
FIG. 5 is a schematic diagram of a control circuit provided by an exemplary embodiment;
fig. 6 is a block diagram of a power supply apparatus according to an exemplary embodiment.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
As described above, in view of the fact that the increase in the service time of the power supply by increasing the energy density of the cells and the number of cells has reached the limit at present, the inventors thought that, alternatively, it may be considered to increase the service time of the power supply by increasing the conversion efficiency of the power supply.
In existing electrical devices, the power supply outputs the same voltage, and each functional module in the electrical device is powered by the same voltage. The inventors have noted that, at the time of voltage conversion, the closer the voltages before and after conversion, the higher the conversion efficiency, and the conversion efficiency of step-down is higher than that of step-up under the same conditions. In this way, for some functional modules, the conversion efficiency of the power supply is not high because the voltage boosting or voltage reducing value is large. The inventor thus conceived that it is possible to divide the power supply into several power supply modules, to output different voltages, and to determine which power supply module supplies power to a functional module in particular, based on the input voltage of the functional module. Therefore, the conversion efficiency of the power supply is improved on the basis of the prior art, and the service life of the power supply is prolonged.
Fig. 1 is a flowchart of a power supply method for an electrical device according to an exemplary embodiment. The electrical device may include a plurality of functional modules, and the electrical device is powered by a plurality of power modules having different output voltages. As shown in fig. 1, the method may include the following steps.
In step S11, the output voltage of each power supply module is set so that the output voltage of each power supply module is in the section formed by the input voltages of the plurality of function modules, respectively.
In step S12, a power supply module corresponding to each function module is determined based on the input voltage of each function module and the output voltage of each power supply module. When each functional module is powered by the corresponding power supply module, the conversion efficiency of the power supply is higher than that when other power supply modules are used for supplying power.
In step S13, each functional module is controlled to be powered by the corresponding power supply module.
The electrical equipment can comprise user equipment such as a mobile phone, a computer, a television, an air conditioner and the like. A functional module is a relatively independent circuit module that is capable of performing a specific function. For example, the functional modules in the notebook computer may include a memory module, a screen backlight module, a hard disk module, an optical disc drive module, and the like.
The electric device includes a voltage conversion circuit for converting a voltage output from the power supply into an input voltage of the functional module. As described above, in these voltage conversion circuits, the power supplies have different conversion efficiencies. For example, in current notebook computers, the output voltage of the power supply is 12.6V. For the memory module, the hard disk module, the optical disc drive module, and the screen backlight module (the input voltages are about 1.35V, 5V, and 25V, respectively), if 12.6V conversion is used, the power conversion efficiency of the voltage conversion modules corresponding to the memory module and the screen backlight module is lower than that of the hard disk module.
The above-described section formed by the input voltages of the plurality of functional blocks means a section in which the maximum input voltage and the minimum input voltage of the functional blocks are two terminals. For example, in a notebook computer, the input voltage of the memory module is the minimum, which is 1.35V. The input voltage of the screen backlight circuit module is maximum, and is about 25V. The interval formed by the maximum input-output voltage and the minimum input voltage of the functional module is 1.35V-25V. The output voltage of each power supply module is in the interval, so that the voltage span before and after voltage regulation can be limited to a certain extent, and the power supply conversion efficiency is increased.
For the setting of the output voltage of each power module, any value within the above interval may be selected. In an embodiment of a notebook computer, two power modules may be provided, with output voltages of 4.2V and 8.4V, respectively. On the one hand, 4.2V and 8.4V are in the interval formed by the input voltages of most functional modules (e.g., 1.35V-25V), and on the other hand, considering that the 12.6V power supply voltage of the existing notebook computer is provided by three cells, each cell provides 4.2V. Voltages of 4.2V and 8.4V may be provided by a combination of one cell and two cells, respectively. Therefore, the output of a plurality of power supply voltages is realized, a new battery core does not need to be manufactured, the occupied volume is not changed, and the implementation is simple and convenient.
According to the steps in the present disclosure, a voltage conversion relationship (e.g., a voltage difference, a voltage increase or a voltage decrease) between the input voltage of each functional module and the output voltage of each power module may be considered, when determining which power module supplies power to the functional module, the power conversion efficiency is the highest, and the power module with the highest conversion efficiency is determined as the power module corresponding to the functional module. It is understood that a plurality of functional modules may correspond to the same power supply module.
For the corresponding relationship between the functional modules and the power supply modules, the power supply module corresponding to each functional module can be selected according to the principle of proximity (the voltage values before and after conversion are close); the corresponding power module may be selected in consideration of a step-down priority rule (in the case of the same voltage difference, the conversion efficiency of step-down conversion of the output voltage of the power module is higher than that of step-up conversion).
In an embodiment of the present disclosure, the step of determining the power supply module corresponding to each functional module (step S12) according to the input voltage of each functional module and the output voltage of each power supply module may include the following steps.
And when the input voltage of one functional module is less than the output voltage of the power module with the minimum output voltage, determining the power module with the minimum output voltage as the corresponding power module.
Specifically, the input voltage is less than the output voltage of the power module with the minimum output voltage, that is, less than the output voltages of all the power modules, and at this time, no matter which power module is used for supplying power, the voltage is reduced, and then the power module with the minimum voltage difference is selected for supplying power.
And when the input voltage of one functional module is greater than the output voltage of the power module with the maximum output voltage, determining the power module with the maximum output voltage as the corresponding power module.
Specifically, the input voltage is greater than the output voltage of the power module with the largest output voltage, that is, greater than the output voltages of all the power modules, and at this time, no matter which power module is used for supplying power, the voltage is boosted, and then the power module with the smallest voltage difference is selected for supplying power.
When the input voltage of a functional module is between the output voltages of two power modules, the corresponding power module is determined according to an experimental method.
In this case, the functional module has high conversion efficiency of the power supply when the power supply module with a smaller output voltage boosts the voltage to supply power, or has high conversion efficiency of the power supply when the power supply module with a larger output voltage supplies power, and depends on a specific voltage difference. Thus, it can be determined experimentally. For example, this can be determined by referring to the efficiency curve in the specification given by the manufacturer of the circuit chip.
For example, a notebook computer is provided with two power modules, and the output powers of the two power modules are 4.2V and 8.4V, respectively. The memory module can be powered by a power module with the output power of 4.2V because the input voltage of the memory module is 1.35V. Since 8.4V and 4.2V both require a step-down to obtain 1.35V, 4.2V is closer to 1.35V than 8.4V, and the power conversion efficiency is higher. For another example, the input voltage of the hard disk module is 5V, which is between 4.2V and 8.4V, and the efficiency is higher when 8.4V is used for supplying power through an experimental method. In most cases, the power supply module is not fully charged, and the voltage is less than 8.4V or 4.2V. The input voltage of the screen backlight circuit module is 25V, and the power supply module with the output power of 8.4V can be adopted for supplying power.
In an embodiment of the disclosure, considering that the cost of the voltage reduction circuit is lower than that of the voltage boost circuit, and the actual voltage output by the 4.2V power module is often near 3.0V, and considering that the conversion efficiency of voltage reduction is higher, a functional module of which the input voltage is below 3.0V in the notebook computer can be corresponding to the power module of 4.2V output voltage, and the power module supplies power; and corresponding the functional module with the input voltage of more than 3.0V to the power module with the output voltage of 8.4V, and supplying power by the power module.
Through above-mentioned technical scheme, set up by a plurality of power module of output voltage diverse for electrical equipment power supply, wherein, when every functional module is supplied power by corresponding power module, the conversion efficiency of power is high when being supplied power by other power module. Therefore, compared with the mode that the input voltage of all the functional modules is supplied by the same power supply voltage, the conversion efficiency of the power supply can be improved, the service life of the power supply is prolonged, the heat productivity of electrical equipment is reduced, and resources are saved.
In practical application, in order to avoid the phenomenon that the discharge imbalance of the plurality of power supply modules occurs, one or more functional modules in the electrical equipment can be controlled to be powered by any one of the power supply modules.
Specifically, fig. 2 is a flowchart of a power supply method for an electrical device according to another exemplary embodiment. As shown in fig. 2, on the basis of fig. 1, the electrical device is powered by two power supply modules, and the step of respectively controlling each function module to be powered by the corresponding power supply module (step S13) may include the following steps.
In step S131, one or more balancing function modules of the plurality of function modules are controlled to be powered by the plurality of power modules.
In step S132, the other functional modules are controlled to be powered by the corresponding power modules.
The balance function module is a part of function modules selected from the plurality of function modules. The power supply by the plurality of power supply modules may perform a function of discharging the plurality of power supply modules in a balanced manner by controlling the power supply, and therefore, in this embodiment, the functional module supplied with power by the plurality of power supply modules is called a balanced functional module. And the other power supply modules except the balance function module are supplied with power by the respective corresponding power supply modules.
As mentioned above, the balancing function module may be one or more. Alternatively, when the balancing function module comprises only one function module, the over-adjustment is not easy and the connection lines are simpler.
When the plurality of power supply modules are controlled to supply power to the balance function module, the balance function module can be controlled to supply power to the power supply module corresponding to the balance function module in the plurality of power supply modules when the plurality of power supply modules are discharged and balanced (the residual electric quantity is equivalent); when the plurality of power supply modules are unbalanced in discharge (the difference of the residual electric quantity is large), the power supply module with the largest residual electric quantity in the plurality of power supply modules supplies power to the control balance function module.
Specifically, an independent electricity meter may be installed for each power module, and the remaining amount of electricity of each power module may be detected separately. Because each power module independently supplies power for the corresponding functional module, an independent protection circuit can be installed for each power module, and therefore the power module with a fault cannot influence other power modules, and safety is high.
For the selection of the balancing function module among the plurality of function modules, the function module with the input voltage between the output voltages of any two power supply modules can be selected as the balancing function module. Thus, no matter which power module is used for supplying power, the conversion efficiency is not too low. That is, the balance of the power of the plurality of power modules can be adjusted at the expense of less conversion efficiency.
For example, in a notebook computer powered by two power supply modules with output powers of 4.2V and 8.4V, respectively, a hard disk module (with an input voltage of 5V) may be selected as the balancing function module. Because 5V is between 4.2V and 8.4V, when the electric quantity of the 4.2V power supply module is less or the electric quantities of the two power supply modules are equivalent, the voltage can be reduced to 5V by using 8.4V, and the conversion efficiency is higher; when the power module with 8.4V has less electric quantity, the power module with 4.2V can be controlled to supply power, and the voltage is boosted to 5V by 4.2V, so that the balance of the electric quantities of the two power modules is adjusted at the expense of some conversion efficiency. Under the above conditions, when the hard disk module of 5V is selected, the lost conversion efficiency is lower than that when the screen backlight module of 25V is selected as the balance function module, when the electric quantity balance is adjusted.
In summary, in this embodiment, a functional module with an input voltage between the output voltages of any two power modules may be selected as a balance functional module, and is controlled to be powered by multiple power modules, while other functional modules are powered by respective corresponding power modules. Therefore, the conversion efficiency of the power supply module is increased, and the power supply balance can be kept by controlling the power supply of the balance function module when necessary, so that the service time of the electrical equipment is increased on the whole.
FIG. 3 is a flow diagram for controlling the powering of a balancing function provided by an exemplary embodiment. As shown in fig. 3, on the basis of fig. 2, the step of controlling one or more balance function modules among the plurality of function modules to be powered by the plurality of power supply modules (step S131) may include the following steps.
In step S1311, the remaining power amounts of the plurality of power supply modules are detected.
In step S1312, when the remaining power amounts of the plurality of power modules are all greater than the preset first power threshold, and the difference between the remaining power amounts of two power modules is greater than the preset first difference threshold, the one or more balance function modules are controlled to be powered only by the power module with the largest remaining power amount.
In step S1313, when the remaining power amounts of the multiple power modules are all greater than the first power threshold, and the difference between the remaining power amounts of any two power modules is smaller than the first difference threshold, the one or more balance function modules are controlled to be powered only by the corresponding power module.
The residual electric quantities of the plurality of power supply modules are all larger than a preset first electric quantity threshold value, and the difference between the residual electric quantities of any two power supply modules is smaller than a first difference threshold value, so that the residual electric quantities of the two power supply modules are considered to be equivalent, and the discharge is balanced; on the contrary, the remaining power amounts of the power modules are all larger than the preset first power amount threshold, and the difference between the remaining power amounts of the two power modules is larger than the first difference threshold, so that the two power modules are considered to be unbalanced in discharge. The first difference threshold may be, for example, 3% and the first charge threshold may be, for example, 10%.
And only one power supply module in the plurality of power supply modules is the power supply module corresponding to the balance function module, and the conversion efficiency is higher when the corresponding power supply module is used for supplying power.
When the discharge of the plurality of power supply modules is balanced, the power supply of the corresponding power supply module can be controlled; on the contrary, when the discharge of the power modules is unbalanced, the power modules with more residual electric quantity can be controlled to supply power. The power module with the largest remaining capacity may be a power module corresponding to the balancing function module or not.
FIG. 4 is a flow diagram of controlling the powering of a balancing function provided by another exemplary embodiment. As shown in fig. 4, on the basis of fig. 3, the step of controlling one or more balance function modules of the plurality of function modules to be powered by the plurality of power supply modules (step S131) may further include the following steps.
In step S1314, when the remaining power of the power module with the least remaining power is less than the first power threshold and the difference between the remaining powers of two power modules is greater than a preset second difference threshold, controlling the one or more balance function modules to be powered only by the power module with the most remaining power, wherein the first difference threshold is greater than the second difference threshold.
In step S1315, when the remaining power of the power module with the least remaining power is less than the first power threshold, and the difference between the remaining powers of any two power modules is less than the second difference threshold, the one or more balance function modules are controlled to be powered only by the corresponding power module.
In this embodiment, if the remaining power of the power module with the least remaining power is less than the first power threshold, and the difference between the remaining powers of two power modules is greater than the preset second difference threshold, it may also be considered that the plurality of power modules are unbalanced in discharge; on the contrary, if the remaining power of the power module with the least remaining power is less than the first power threshold, and the difference between the remaining power of any two power modules is less than the second difference threshold, then the remaining power of the power modules is considered to be equivalent, and the discharging is balanced.
For example, the first difference threshold and the second difference threshold are respectively 3% and 1%, and the first power threshold is 10%.
In this embodiment, two conditions for determining discharge balance are set respectively according to the remaining power interval, and the smaller the remaining power of the power module, the smaller the difference threshold for determining discharge balance. In this way, a higher level of balance of the discharge is maintained when the amount of power remaining in the power supply module is small, thereby extending the lifetime of the electrical device as a whole.
It is understood that, in other embodiments, more than three kinds of discharge balance conditions may be set according to the interval of the remaining power. The various discharge balance conditions can all follow the rule that the smaller the residual electric quantity of the power supply module, the smaller the difference threshold value of the discharge balance is judged.
For example, when the remaining capacities of the plurality of power modules are all greater than 10%, and the difference between the remaining capacities of two power modules is greater than 3%, or when the remaining capacities of the plurality of power modules are all between 5% and 10%, and the difference between the remaining capacities of two power modules is greater than 2%, or when the remaining capacities of the plurality of power modules are all less than 5%, and the difference between the remaining capacities of two power modules is greater than 1%, controlling the one or more balance function modules to be powered only by the power module with the largest remaining capacity; otherwise, one or more balance function modules are controlled to be only powered by the corresponding power supply module.
The above-described embodiment in which the discharge balance condition is set by dividing the remaining capacity into a plurality of sections largely extends the continuous power supply time of the electrical device.
The residual capacities of the plurality of power modules can only display the average value of the residual capacities of the plurality of power modules, and the user can know the overall situation of the battery use through the average value. Alternatively, the remaining power amounts of the plurality of power supply modules may be displayed one by one on the display screen, and the user may grasp the use condition of each power supply module. When a fault occurs in the power supply control process, a user can find the fault as soon as possible and take measures to remedy the fault as soon as possible. For example, if the difference between the remaining capacities of any two power supply modules is found to be greater than 10%, it can be determined that the control circuit has failed.
For the above control strategy, a variety of commonly used control circuits may be used for implementation. FIG. 5 is a schematic diagram of a control circuit provided by an exemplary embodiment. As shown in fig. 5, the output powers of the two power modules are 4.2V and 8.4V, respectively. Q1 and Q4 are N channel MOSFETs, Q2, Q3 and Q5 are P channel MOSFETs, and Q1 and Q4 are controlled by GPIO1 and GPIO2 signals, respectively. Normally, only one of Q1 and Q4 is on, and the other is off. That is, when GPIO1 is high, GPIO2 is low, and when GPIO1 is low, GPIO2 is high. Q2 and Q3 are back-to-back MOSFETs, and can prevent backflow. R1, R2 and C1 are soft start circuits of Q2 and Q3, and R3, R4 and C2 are soft start circuits of Q5. The upper end of the C3 is connected with one or more voltage conversion circuits of the balance function module.
Specifically, when the 4.2V power module is detected to be discharged faster (discharge imbalance), a low level may be input at GPIO1, i.e., Q1 is turned off, and a high level may be input at GPIO2, i.e., Q4 is turned on. So that the upper output of C3 will be powered by the 8.4V power supply module. When the 4.2V power supply module is detected to be slowly discharged, a high level can be input at the GPIO1, namely the Q1 is turned on, and a low level is input at the GPIO2, namely the Q4 is turned off, so that the upper end output of the C3 is powered by the 4.2V power supply module.
The invention also provides a power supply device for the electrical equipment. The electrical device includes a plurality of functional modules. The electrical device is powered by a plurality of power modules having different output voltages. Fig. 6 is a block diagram of a power supply apparatus according to an exemplary embodiment. As shown in fig. 6, the power supply apparatus 10 for electrical devices may include a setting module 11, a determination module 12, and a control module 13.
The setting module 11 is configured to set the output voltage of each power supply module, respectively, such that the output voltage of each power supply module is in a section formed by the input voltages of the plurality of functional modules.
The determining module 12 is configured to determine a power module corresponding to each functional module according to the input voltage of each functional module and the output voltage of each power module, where when each functional module is powered by the corresponding power module, the conversion efficiency of the power is higher than when other power modules are powered by the corresponding power module.
The control module 13 is used for controlling each functional module to be powered by the corresponding power supply module.
Optionally, the determination module 12 may include a first determination submodule, a second determination submodule, and a third determination submodule.
The first determining submodule is used for determining the power supply module with the minimum output voltage as the corresponding power supply module when the input voltage of one functional module is smaller than the output voltage of the power supply module with the minimum output voltage.
And the second determining submodule is used for determining the power supply module with the maximum output voltage as the corresponding power supply module when the input voltage of one functional module is greater than the output voltage of the power supply module with the maximum output voltage.
And the third determining submodule is used for determining the corresponding power supply module according to an experimental method when the input voltage of one functional module is between the output voltages of the two power supply modules.
Optionally, the control module 13 may include a first control sub-module and a second control sub-module.
The first control submodule is used for controlling one or more balance function modules in the plurality of function modules to be powered by the plurality of power supply modules.
The second control submodule is used for controlling other functional modules to be powered by the corresponding power supply module.
Optionally, the first control sub-module may include a detection sub-module, a third control sub-module, and a fourth control sub-module.
The detection submodule is used for detecting the residual electric quantity of the plurality of power supply modules.
The third control sub-module is used for controlling one or more balance function modules to be only powered by the power module with the largest residual electric quantity when the residual electric quantities of the plurality of power modules are all larger than a preset first electric quantity threshold value and the difference between the residual electric quantities of two power modules is larger than a preset first difference threshold value.
And the fourth control submodule is used for controlling one or more balance function modules to be only supplied with power by the corresponding power supply module when the residual electric quantity of the plurality of power supply modules is larger than the first electric quantity threshold value and the difference between the residual electric quantities of any two power supply modules is smaller than the first difference threshold value.
Optionally, the first control submodule may further include a fifth control submodule and a sixth control submodule.
And the fifth control submodule is used for controlling one or more balance function modules to be only powered by the power module with the largest residual electric quantity when the residual electric quantity of the power module with the smallest residual electric quantity is smaller than the first electric quantity threshold value and the difference between the residual electric quantities of two power modules is larger than a preset second difference threshold value. Wherein the first difference threshold is greater than the second difference threshold.
And the sixth control submodule is used for controlling one or more balance function modules to be only powered by the corresponding power supply module when the residual electric quantity of the power supply module with the least residual electric quantity is smaller than the first electric quantity threshold value and the difference between the residual electric quantities of any two power supply modules is smaller than the second difference threshold value.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Through above-mentioned technical scheme, set up by a plurality of power module of output voltage diverse for electrical equipment power supply, wherein, when every functional module is supplied power by corresponding power module, the conversion efficiency of power is high when being supplied power by other power module. Therefore, compared with the mode that the input voltage of all the functional modules is supplied by the same power supply voltage, the conversion efficiency of the power supply can be improved, the service life of the power supply is prolonged, the heat productivity of electrical equipment is reduced, and resources are saved.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (6)
1. A power supply method for an electric apparatus including a plurality of functional modules, characterized in that the electric apparatus is supplied with power from a plurality of power modules whose output voltages are different from each other, the method comprising:
setting the output voltage of each power supply module respectively so that the output voltage of each power supply module is in an interval formed by the input voltages of the plurality of functional modules;
determining a power supply module corresponding to each functional module according to the input voltage of each functional module and the output voltage of each power supply module, wherein when each functional module is powered by the corresponding power supply module, the conversion efficiency of the power supply is higher than that when other power supply modules are powered;
controlling one or more balancing functional modules of the plurality of functional modules to be powered by the plurality of power supply modules;
controls other functional modules to be powered by the corresponding power supply modules,
wherein the step of controlling one or more balancing functional modules of the plurality of functional modules to be powered by the plurality of power modules comprises:
detecting the residual electric quantity of the plurality of power supply modules;
when the residual electric quantity of the plurality of power supply modules is larger than a preset first electric quantity threshold value and the difference between the residual electric quantities of two power supply modules is larger than a preset first difference threshold value, controlling the one or more balance function modules to be powered only by the power supply module with the largest residual electric quantity;
and when the residual electric quantity of the plurality of power supply modules is larger than the first electric quantity threshold value and the difference between the residual electric quantities of any two power supply modules is smaller than the first difference threshold value, controlling the one or more balance function modules to be only supplied with power by the corresponding power supply module.
2. The power supply method according to claim 1, wherein the step of determining the power supply module corresponding to each function module based on the input voltage of each function module and the output voltage of each power supply module comprises:
when the input voltage of a functional module is smaller than the output voltage of the power module with the minimum output voltage, determining the power module with the minimum output voltage as a corresponding power module;
when the input voltage of a functional module is greater than the output voltage of the power module with the maximum output voltage, determining the power module with the maximum output voltage as a corresponding power module;
when the input voltage of a functional module is between the output voltages of two power modules, the corresponding power module is determined according to an experimental method.
3. The method of claim 1, wherein the step of controlling one or more balancing functional modules of the plurality of functional modules to be powered by the plurality of power modules further comprises:
when the residual capacity of the power module with the least residual capacity is smaller than the first capacity threshold and the difference between the residual capacities of two power modules is larger than a preset second difference threshold, controlling the one or more balance function modules to be powered only by the power module with the most residual capacity, wherein the first difference threshold is larger than the second difference threshold;
and when the residual electric quantity of the power supply module with the least residual electric quantity is smaller than the first electric quantity threshold value and the difference between the residual electric quantities of any two power supply modules is smaller than the second difference threshold value, controlling the one or more balance function modules to be only supplied with power by the corresponding power supply module.
4. A power supply apparatus for an electrical device including a plurality of functional modules, characterized in that the electrical device is supplied with power from a plurality of power modules whose output voltages are different from each other, the apparatus comprising:
a setting module for setting an output voltage of each power supply module, respectively, so that the output voltage of each power supply module is in an interval formed by input voltages of the plurality of functional modules;
the determining module is used for determining the power supply module corresponding to each functional module according to the input voltage of each functional module and the output voltage of each power supply module, wherein when each functional module is powered by the corresponding power supply module, the conversion efficiency of the power supply is higher than that when other power supply modules are powered;
a control module for respectively controlling each functional module to be powered by the corresponding power supply module,
wherein the control module comprises:
a first control sub-module for controlling one or more balancing functional modules of the plurality of functional modules to be powered by the plurality of power modules;
the second control submodule is used for controlling other functional modules to be powered by the corresponding power supply module,
wherein the first control sub-module includes:
the detection submodule is used for detecting the residual electric quantity of the plurality of power supply modules;
the third control sub-module is used for controlling the one or more balance function modules to be only powered by the power module with the largest residual electric quantity when the residual electric quantities of the plurality of power modules are all larger than a preset first electric quantity threshold value and the difference between the residual electric quantities of two power modules is larger than a preset first difference threshold value;
and the fourth control submodule is used for controlling the one or more balance function modules to be only powered by the corresponding power supply module when the residual electric quantity of the plurality of power supply modules is greater than the first electric quantity threshold value and the difference between the residual electric quantity of any two power supply modules is less than the first difference threshold value.
5. The power supply device according to claim 4, wherein the determining module comprises:
the first determining submodule is used for determining the power supply module with the minimum output voltage as the corresponding power supply module when the input voltage of a functional module is smaller than the output voltage of the power supply module with the minimum output voltage;
the second determining submodule is used for determining the power supply module with the maximum output voltage as the corresponding power supply module when the input voltage of one functional module is greater than the output voltage of the power supply module with the maximum output voltage;
and the third determining submodule is used for determining the corresponding power supply module according to an experimental method when the input voltage of one functional module is between the output voltages of the two power supply modules.
6. The power supply device of claim 4, wherein the first control sub-module further comprises:
the fifth control submodule is used for controlling the one or more balance function modules to be only powered by the power module with the largest residual capacity when the residual capacity of the power module with the smallest residual capacity is smaller than the first capacity threshold and the difference between the residual capacities of two power modules is larger than a preset second difference threshold, wherein the first difference threshold is larger than the second difference threshold;
and the sixth control submodule is used for controlling the one or more balance function modules to be only powered by the corresponding power supply module when the residual electric quantity of the power supply module with the least residual electric quantity is smaller than the first electric quantity threshold value and the difference between the residual electric quantities of any two power supply modules is smaller than the second difference threshold value.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1732418A (en) * | 2003-01-17 | 2006-02-08 | 飞思卡尔半导体公司 | Power management system |
| CN101227144A (en) * | 2007-01-18 | 2008-07-23 | 富士通株式会社 | Power supply device and method of supplying power supply voltage to load device |
| CN102609075A (en) * | 2012-02-21 | 2012-07-25 | 李�一 | Power management circuit of multi-core processor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1684149A3 (en) * | 2004-10-05 | 2007-04-11 | LG Electronics Inc. | Voltage controller for use in electronic appliance using a plurality of power sources and method thereof |
| CN101902661B (en) * | 2009-05-27 | 2013-12-18 | 华为技术有限公司 | Power supply system, communication device and power supply control method |
| CN202019476U (en) * | 2010-12-29 | 2011-10-26 | 笙泉科技股份有限公司 | Alternating current to direct current multi-channel load control device and lighting device thereof |
| CN102510122B (en) * | 2011-11-18 | 2013-11-20 | 北京星网锐捷网络技术有限公司 | Multi-power supply control devices and system thereof |
| CN103429040B (en) * | 2012-05-22 | 2016-09-14 | 台达电子工业股份有限公司 | Power supply device and the compound formulation of modular power thereof |
| CN102749982A (en) * | 2012-06-29 | 2012-10-24 | 浪潮电子信息产业股份有限公司 | Design method for improving power supply efficiency of power supply system with multiple groups of power sources |
-
2016
- 2016-10-27 CN CN201610955560.1A patent/CN108011498B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1732418A (en) * | 2003-01-17 | 2006-02-08 | 飞思卡尔半导体公司 | Power management system |
| CN101227144A (en) * | 2007-01-18 | 2008-07-23 | 富士通株式会社 | Power supply device and method of supplying power supply voltage to load device |
| CN102609075A (en) * | 2012-02-21 | 2012-07-25 | 李�一 | Power management circuit of multi-core processor |
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