CN112202220B - Power supply control method, power supply control circuit, electronic device, and readable storage medium - Google Patents
Power supply control method, power supply control circuit, electronic device, and readable storage medium Download PDFInfo
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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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The application relates to a power supply control method, a power supply control circuit, electronic equipment and a readable storage medium, wherein battery voltage is obtained, if the battery voltage is higher than a preset voltage threshold value, the battery voltage is subjected to at least one voltage conversion through a power chip to output converted voltage, and the converted voltage can be used by a device to be supplied with power; and then the converted voltage is used for supplying power to the device to be powered. Because the power supply chip in the electronic equipment for supplying power to the device to be powered can only perform voltage conversion on the voltage within a certain threshold range so as to supply the device to be powered to be used normally. Therefore, in the application, if the battery voltage is higher than the preset voltage threshold, the battery voltage is subjected to at least one voltage conversion through the power chip to output the converted voltage, and then the converted voltage is used for supplying power to the device to be powered. The voltage conversion times are shortened, the conversion efficiency of electric energy is improved, and the duration of the battery is further prolonged.
Description
Technical Field
The present disclosure relates to the field of power management technologies, and in particular, to a power supply control method, a power supply control circuit, an electronic device, and a readable storage medium.
Background
With the development of mobile terminal technology, the functions that can be realized by the mobile terminal are more and more abundant, and accordingly, higher requirements are also put forward on the cruising ability of the battery of the mobile terminal. Conventionally, in the process of supplying power to a device to be supplied with power through a battery, the voltage of the battery needs to be converted into multiple voltages, so that the power requirement of the device to be supplied with power can be met. Obviously, in the process of performing voltage conversion on the battery voltage for a plurality of times, the electric energy conversion efficiency is low, and thus the duration of the battery is greatly shortened.
Disclosure of Invention
The embodiment of the application provides a power supply control method, a power supply control circuit, electronic equipment and a readable storage medium, which can improve the conversion efficiency of electric energy and further prolong the endurance time of a battery.
A power supply control method, the method comprising:
acquiring the battery voltage of the electronic equipment;
if the battery voltage is higher than a preset voltage threshold, the battery voltage is subjected to at least one voltage conversion through a power chip to output converted voltage, and the converted voltage can be used by a device to be powered in the electronic equipment;
and supplying power to the device to be powered through the converted voltage.
A power supply control circuit, comprising:
a battery voltage acquisition unit configured to acquire a battery voltage of the electronic device;
the voltage conversion unit is used for converting the battery voltage at least once through the power chip to output converted voltage if the battery voltage is higher than a preset voltage threshold, wherein the converted voltage can be used by a device to be powered in the electronic equipment;
and the power supply unit is used for supplying power to the device to be powered through the converted voltage.
An electronic device comprising a battery, a power supply control circuit as described above, a memory and a processor, the memory storing a computer program which, when executed by the processor, causes the processor to perform the steps of the power supply control method as described above.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, implements the steps of the power supply control method as described above.
The power supply control method, the power supply control circuit, the electronic equipment and the readable storage medium acquire the battery voltage, and if the battery voltage is higher than a preset voltage threshold value, the battery voltage is subjected to at least one voltage conversion through the power chip to output the converted voltage, and the converted voltage can be used by a device to be supplied with power; and then the converted voltage is used for supplying power to the device to be powered. Because the power supply chip in the electronic equipment for supplying power to the device to be powered can only perform voltage conversion on the voltage within a certain threshold range so as to supply the device to be powered to be used normally. Therefore, the conventional method needs to convert the battery voltage higher than the preset voltage threshold into the voltage which can be supported by the power chip for supplying power to the device to be powered through one-time voltage conversion, and the voltage conversion can be performed only by the power chip for supplying power to the device to be powered at the moment so as to supply the device to be powered for normal use. The electric energy conversion efficiency is low in the process of performing voltage conversion on the battery voltage for a plurality of times, and thus the endurance time of the battery is greatly shortened. Therefore, in the application, if the battery voltage is higher than the preset voltage threshold, the battery voltage is subjected to at least one voltage conversion through the power chip to output the converted voltage, and then the converted voltage is used for supplying power to the device to be powered. The voltage conversion times are shortened, the conversion efficiency of electric energy is improved, and the duration of the battery is further prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an application environment diagram of a power control method in one embodiment;
FIG. 2 is a flow chart of a power control method in one embodiment;
FIG. 3 is a flow chart of a method of power control in yet another embodiment;
FIG. 4 is a flow chart of a conventional power supply control method;
FIG. 5 is a flow chart of a method of power control in yet another embodiment;
FIG. 6 is a flow chart of a method of power control in yet another embodiment;
FIG. 7 is a block diagram of the power control circuitry in one embodiment;
FIG. 8 is a block diagram illustrating a structure of the voltage converting unit in FIG. 7;
fig. 9 is a schematic diagram of an internal structure of an electronic device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
Fig. 1 is an application scenario diagram of a power supply control method in one embodiment. As shown in fig. 1, the application environment includes an electronic device 120. Through the power supply control method in the present application, the electronic device 120 obtains the battery voltage of the electronic device; if the battery voltage is higher than the preset voltage threshold, the battery voltage is subjected to at least one time of voltage conversion through the power chip to output converted voltage, and the converted voltage can be used by a device to be powered in the power supply equipment; and supplying power to the device to be powered through the converted voltage. Here, the electronic device 120 may be any terminal device such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant ), a wearable device, and the like.
FIG. 2 is a flow chart of a power control method in one embodiment. The power supply control method in this embodiment is described taking the electronic device 120 in fig. 1 as an example. As shown in fig. 2, the power supply control method includes steps 220 to 260. Wherein,,
Lithium ion batteries or lithium polymer batteries are often used in electronic devices, although emerging batteries, such as graphene batteries, may also be used, and are not limited in this application. The battery in the electronic device may be a battery formed by single cells, a battery formed by double cells connected in series or in parallel, or a battery formed by multiple cells connected in series or in parallel. Generally, for electronic devices such as mobile terminals (e.g., mobile phones), if a battery is connected in parallel with a single cell or a dual cell, the battery voltage is approximately in the range of 3.0V-4.45V. If the batteries are connected in series by using double cells, the voltage of the batteries is approximately in the range of 6.0V-8.9V.
Specifically, the electronic device may employ a battery management system (BMS, battery Management System) to obtain the battery voltage of the electronic device. The battery management system includes sensors, controllers, actuators, high and low voltage harnesses, etc., and the battery management system (BMS, battery Management System) is mainly used to monitor the state and use of the battery. One side of the BMS is connected with the battery and used for acquiring information of the battery, and the other side of the BMS is connected with the CPU and used for reporting the information of the battery to the CPU. The battery management system can be operated on a CPU, a singlechip, a DSP or an FPGA.
Specifically, the electronic equipment (for example, a mobile phone) generally requires that the input voltage of the power chip supplied to the device to be powered does not exceed 5.0V, and the power chip of the device to be powered can perform voltage conversion on the input voltage so as to enable the device to be powered in the electronic equipment to be normally used. Thus, the preset voltage threshold may be set to 5.0V. At this time, if the batteries are connected in series by using the double battery cells, it is obvious that the battery voltage of 6.0V-8.9V far exceeds the preset voltage threshold. If the battery adopts single cell or double cells connected in parallel, the voltage range of the battery is approximately between 3.0V and 4.45V, and the preset voltage threshold is not exceeded.
Therefore, the application provides a power supply control method, which is used for judging whether the battery voltage of the electronic equipment acquired at the moment is higher than a preset voltage threshold value, if yes, the battery voltage is subjected to at least one voltage conversion through a power chip to output converted voltage, and the converted voltage can be used by a device to be powered in the electronic equipment. The power chip here is capable of directly supporting a battery voltage above a preset voltage threshold. Specifically, the range of the input voltage that can be supported by some or all of the common power chips in the electronic device can be adjusted, so that the adjusted power chips can directly support the battery voltage higher than the preset voltage threshold. For example, the adjustment of the range of input voltages that can be supported by the power chip is achieved by adjusting the semiconductor process inside the power chip.
Therefore, for the common power supply chips with the parts adjusted, if the battery voltage is higher than the preset voltage threshold value, the voltage of the battery is converted once through the power supply chips, and the voltage which can be normally used by the device to be powered in the electronic equipment can be directly output. For some common power chips which are not regulated, if the battery voltage is higher than a preset voltage threshold, the power chip still needs to be additionally added, and after the input battery voltage is converted into a voltage lower than the preset voltage threshold, the battery voltage can be converted again through the power chip of the device to be powered, and the voltage which can be normally used by the device to be powered in the electronic equipment is output. If the battery voltage is higher than the preset voltage threshold, the battery voltage is subjected to at least one voltage conversion by the power chip to output the converted voltage, so that the device to be powered in the power supply equipment can be normally used.
And 260, supplying power to the device to be powered through the converted voltage.
And finally, inputting the converted voltage into a device to be powered, and supplying power to the device to be powered. The device to be powered comprises a CPU, a memory, a screen, a DSP, an FPGA and other components, and the device to be powered is not limited in this application. And the input voltage required by each different device to be powered is different, and the input voltage of the power chip can be converted into the voltage adapting to the device to be powered and output through the power chip corresponding to the device to be powered, so that the device to be powered is further input to the device to be powered, and the normal work of the device to be powered is ensured.
In the conventional technology, the power supply chip of the device to be powered does not support a power supply voltage higher than a preset voltage threshold. Therefore, if the battery voltage is higher than the preset voltage threshold, the power supply chip is additionally added to all the devices to be powered to step down the battery voltage, so that the voltage lower than the preset voltage threshold is obtained, and then the voltage can be input to the power supply chip of the devices to be powered to perform voltage conversion, so that the devices to be powered can work normally. When the power chip is additionally arranged, the peripheral devices are additionally and correspondingly arranged, so that the material cost is increased, and precious space in the electronic equipment is occupied. And the electric energy conversion efficiency is lower in the process of carrying out voltage conversion on the battery voltage for a plurality of times, and thus the endurance time of the battery is greatly shortened.
In this embodiment of the present application, if the battery voltage is higher than a preset voltage threshold, the battery voltage is converted at least once by the power chip to output a converted voltage, and then the converted voltage is used to supply power to the device to be powered. The voltage conversion times are shortened, the conversion efficiency of electric energy is improved, and the duration of the battery is further prolonged.
In one embodiment, the voltage conversion of the battery voltage at least once by the power chip outputs a converted voltage, including:
the first power chip can support the voltage conversion of the battery voltage higher than a preset voltage threshold.
The first power chip can support voltage conversion of battery voltage higher than a preset voltage threshold. The first power chip is the obtained power chip after the range of the input voltage which can be supported by the power chip is adjusted by adjusting the semiconductor process inside the power chip. Specifically, the input voltage that can be supported by the first power chip is any voltage that is greater than the preset voltage threshold by 5.0V, and of course, an upper limit of the input voltage that can be supported is set correspondingly. The first power chip may be a DC/DC-DC power chip, a PMU (Power Management Unit ), etc. The power management unit is a highly integrated power management scheme for portable applications, i.e. a plurality of traditional discrete power management devices are integrated into a single package, so that higher power conversion efficiency and lower power consumption can be realized, and fewer components are adopted to adapt to a reduced board-level space.
As shown in fig. 3, there is provided a power supply control method including:
and step 360, supplying power to the device to be supplied with power through the converted voltage.
For electronic devices where the battery voltage may be higher than the preset voltage threshold, all power chips in the electronic device may be replaced with the first power chip. Thus, if the obtained battery voltage of the electronic device is any value greater than the preset voltage threshold. Because the first power supply chip can support the input voltage which is greater than the preset voltage threshold value by 5.0V, the battery voltage is directly subjected to primary voltage conversion by the first power supply chip to output the converted voltage, and the converted voltage can be supplied to the device to be powered, so that the device to be powered can be ensured to work normally. The converted voltage can be used by a device to be powered in the electronic equipment. Specifically, the battery voltage is directly converted into 1.2V, 1.8V, 2.8V, 3.0V, 4.65V, 7.6V, etc. by a DC/DC power chip, a PMU (Power Management Unit ) or the like, which are respectively used as input voltages of components such as a processor CPU, a memory, a screen, a DSP, an FPGA, etc.
Whereas the conventional power supply control method, as shown in fig. 4, includes:
and step 480, supplying power to the device to be powered through the converted voltage.
If the obtained battery voltage of the electronic equipment is 6-8.9V, the battery voltage is obviously larger than the preset voltage threshold value by 5.0V. Common power chips have not been able to support voltage conversion of battery voltages above a preset voltage threshold. Therefore, an additional power chip (for example, a DC/DC power chip supporting a voltage greater than 5.0V of a preset voltage threshold) is required to be added to perform a first step-down process on the battery voltage, and after a voltage lower than the preset voltage threshold is obtained, the voltage can be input to the power chip of the device to be powered to perform a second voltage conversion, so as to ensure that the device to be powered works normally. Specifically, the battery voltage is directly converted into 1.2V, 1.8V, 2.8V, 3.0V, 4.65V, 7.6V, etc. by a DC/DC power chip, a PMU (Power Management Unit ) or the like, which are respectively used as input voltages of components such as a processor CPU, a memory, a screen, a DSP, an FPGA, etc.
In this embodiment of the present application, if the obtained battery voltage of the electronic device is greater than a preset voltage threshold. Because the first power supply chip can support the input voltage which is greater than the preset voltage threshold value by 5.0V, the battery voltage is directly subjected to primary voltage conversion by the first power supply chip to output the converted voltage, and the converted voltage can be supplied to the device to be powered, so that the device to be powered can work normally. The method does not need to perform voltage conversion twice like the traditional method, so that the voltage conversion times are shortened, the conversion efficiency of electric energy is improved, and the endurance time of the battery is further prolonged. The number of devices on the PCB can be reduced without additionally adding a power chip, the occupied area of the PCB is reduced, and finally the production cost of the electronic equipment is reduced.
In one embodiment, the voltage conversion of the battery voltage at least once by the power chip outputs a converted voltage, including:
the battery voltage is subjected to primary voltage conversion through the second power chip to output converted voltage, and the second power chip can support voltage conversion of the battery voltage falling within a preset voltage threshold range; the lower limit of the preset voltage threshold range is the lower limit voltage which can be provided by the battery, and the upper limit of the preset voltage threshold range is the upper limit voltage which can be provided by the battery.
In particular, for electronic devices such as mobile terminals (e.g., mobile phones), if the battery is connected in parallel with a single cell or a dual cell, the battery voltage is approximately in the range of 3.0V-4.45V. If the batteries are connected in series by using double cells, the voltage of the batteries is approximately in the range of 6.0V-8.9V. Then. For electronic devices, the battery typically provides a lower voltage of 3.0V and an upper voltage of 8.9V. Of course, the specific voltage values are not limited in this application.
Since the lower limit of the preset voltage threshold range is the lower limit voltage that the battery can provide, the upper limit of the preset voltage threshold range is the upper limit voltage that the battery can provide. Therefore, when the lower limit voltage which can be provided by the battery is 3.0V and the upper limit voltage which can be provided by the battery is 8.9V, the preset voltage threshold range is 3.0V-8.9V. Then, the adjustment of the range of the input voltage which can be supported by the power chip is realized by adjusting the semiconductor process inside the common power chip, so as to obtain a second power chip. The second power chip may support voltage conversion of battery voltages falling within a preset voltage threshold range (3.0V-8.9V). The second power chip can perform voltage conversion on the power supply voltage smaller than or equal to 5.0V, can perform voltage conversion on the power supply voltage larger than 5.0V, and directly convert and output the converted voltage through one-time voltage conversion, so that the converted voltage can be supplied to the device to be powered, and the device to be powered can work normally. From the above it can be derived that the second power chip supports a wide range of voltage inputs.
As shown in fig. 5, there is provided a power supply control method including:
and step 560, supplying power to the device to be powered through the converted voltage.
For electronic devices where the battery voltage may fall within the preset voltage threshold range, all power chips in the electronic device may be replaced with the second power chip. Therefore, the second power chip can support voltage conversion of the battery voltage falling within a preset voltage threshold range (3.0V-8.9V), so that the second power chip can output the converted voltage after one-time voltage conversion of the battery voltage, and the device to be powered can be directly powered through the converted voltage.
In this embodiment of the present application, if the obtained battery voltage of the electronic device falls within a preset voltage threshold range. Because the second power chip can support voltage conversion of the battery voltage falling within the preset voltage threshold range, the second power chip can directly convert the battery voltage into the voltage once to output the converted voltage, and the converted voltage can be supplied to the device to be supplied with power, so that the device to be supplied with power can work normally. The method does not need to perform voltage conversion twice like the traditional method, so that the voltage conversion times are shortened, the conversion efficiency of electric energy is improved, and the endurance time of the battery is further prolonged. The number of devices on the PCB can be reduced without additionally adding a power chip, the occupied area of the PCB is reduced, and finally the production cost of the electronic equipment is reduced.
In one embodiment, the voltage conversion of the battery voltage at least once by the power chip outputs a converted voltage, including:
the battery voltage is subjected to primary voltage conversion through the first power chip to output converted voltage, and the first power chip can support voltage conversion of the battery voltage higher than a preset voltage threshold; or alternatively, the first and second heat exchangers may be,
the battery voltage is subjected to primary voltage conversion through the second power chip to output converted voltage, and the second power chip can support voltage conversion of the battery voltage falling within a preset voltage threshold range; the method comprises the steps of,
and carrying out voltage conversion on the battery voltage at least twice through a third power chip to output the converted voltage.
Specifically, considering that all chips in the electronic device are adjusted to be first power chips supporting voltage input greater than a preset voltage threshold or all chips are adjusted to be second power chips supporting voltage input within a preset voltage threshold range, the number of power chips to be adjusted is too large, the workload is too large, and the time is too long. Therefore, the power supply chip in the electronic equipment can be adjusted, and the battery voltage is subjected to primary voltage conversion through the adjusted power supply chip to output the converted voltage, so that the converted voltage can be supplied to the device to be powered, and the device to be powered can work normally. And for the part of the power supply chip which is not regulated, the battery voltage is continuously subjected to voltage conversion at least twice to output the converted voltage so as to ensure the normal operation of the device to be powered. The power supply chip can be adjusted in a reduced workload while improving the conversion efficiency of electric energy and further prolonging the endurance time of the battery.
The power supply chip of the electronic device may be adjusted, and the remaining power supply chips may not be adjusted. The first case is that a part of power supply chips in the electronic equipment are adjusted to be a first power supply chip capable of supporting voltage conversion of battery voltage higher than a preset voltage threshold; and no adjustments are made to the remaining power chips. The second case is that a part of power supply chips in the electronic equipment are adjusted to be a second power supply chip which can support voltage conversion of battery voltage falling within a preset voltage threshold range; and no adjustments are made to the remaining power chips. The third case is that a first part of power chips in the electronic equipment are adjusted to be a first power chip capable of supporting voltage conversion of battery voltage higher than a preset voltage threshold, and a second part of power chips are adjusted to be a second power chip capable of supporting voltage conversion of battery voltage falling within the preset voltage threshold; and no adjustments are made to the remaining power chips. The specific adjustment of which power supply chips and the specific adjustment of which power supply chips are the first power supply chip or the second power supply chip can be configured according to the actual resource use condition, and the application is not limited to this.
As shown in fig. 6, there is provided a power supply control method including:
in step 612, the device to be powered (e.g., memory, CPU, screen) is powered by the converted voltage.
In this embodiment of the present application, considering that all the chips in the electronic device are adjusted to be the first power chip supporting the voltage input greater than the preset voltage threshold, or all the chips are adjusted to be the second power chip supporting the voltage input within the preset voltage threshold range, the power chips that need to be adjusted are too many, the workload is too large, and the time is too long. Therefore, the power supply chip in the electronic equipment can be adjusted, and the adjusted power supply chip can only perform voltage conversion once and output the voltage to the device to be powered. Therefore, the power supply chip can be adjusted in a reduced workload while improving the conversion efficiency of electric energy and further prolonging the endurance time of the battery.
In one embodiment, the third power supply chip comprises a third power supply sub-chip and at least one of a half-voltage output buck chip and an adjustable output buck chip; the half-voltage output buck chip and the adjustable output buck chip can support voltage conversion of battery voltage higher than a preset voltage threshold; the third power supply sub-chip can support voltage conversion of the battery voltage lower than a preset voltage threshold; the step of converting the battery voltage into the voltage at least twice through the third power chip to output the converted voltage comprises the following steps:
the battery voltage is reduced to one half of the battery voltage through the half-voltage output voltage reduction chip, and the voltage corresponding to one half of the battery voltage is used as the input voltage of the third power supply sub-chip; or alternatively, the first and second heat exchangers may be,
the battery voltage is reduced to any voltage lower than a preset voltage threshold value through an adjustable output voltage reduction chip, and any voltage lower than the preset voltage threshold value is used as the input voltage of the third power supply sub-chip;
and performing primary voltage conversion on the input voltage of the third power supply sub-chip through the third power supply sub-chip to output the converted voltage.
Specifically, the battery voltage is subjected to voltage conversion at least twice through the third power chip to output the converted voltage. The first voltage is converted into a half voltage which is reduced to the battery voltage through the half voltage output voltage reduction chip, or the battery voltage is reduced to any voltage lower than a preset voltage threshold through the adjustable output voltage reduction chip. For example, the first voltage conversion is to step down the battery voltage (6V) to one half of the battery voltage (3V) by the half-voltage output step-down chip. And the voltage (6V) of the battery is reduced to any voltage (4V) lower than a preset voltage threshold (5V) through an adjustable output voltage reduction chip.
Then, taking the voltage corresponding to one half of the battery voltage as the input voltage of the third power supply sub-chip; or any voltage lower than a preset voltage threshold is used as the input voltage of the third power supply sub-chip. And finally, performing primary voltage conversion on the input voltage of the third power supply sub-chip through the third power supply sub-chip to output the converted voltage, and outputting the voltage to a device to be powered. The third power supply sub-chip is a common power supply chip, and can only support voltage conversion of the battery voltage lower than a preset voltage threshold.
In this embodiment of the present application, the third power supply chip may be configured to reduce the battery voltage to one half of the battery voltage through the half-voltage output voltage reduction chip, and use the voltage corresponding to one half of the battery voltage as the input voltage of the third power supply sub-chip. Alternatively, the battery voltage may be reduced to any voltage lower than the preset voltage threshold by the adjustable output voltage reduction chip, and any voltage lower than the preset voltage threshold may be used as the input voltage of the third power supply sub-chip. And finally, performing primary voltage conversion on the input voltage of the third power supply sub-chip through the common third power supply sub-chip to output the converted voltage. The secondary conversion of the supply voltage can be selectively achieved in a number of ways to meet the different demands of more different situations.
In one embodiment, obtaining a battery voltage of an electronic device includes:
acquiring the voltage of a battery obtained by mutually connecting at least two battery cells in series in the electronic equipment; or alternatively, the first and second heat exchangers may be,
acquiring the voltage of a battery obtained by connecting at least two battery cells in parallel in the electronic equipment; or alternatively, the first and second heat exchangers may be,
the voltage of a battery of a single battery cell in an electronic device is obtained.
In this embodiment of the present application, the battery in the electronic device may be formed by connecting at least two battery cells in series, or may be formed by connecting at least two battery cells in parallel, or may be formed by using a single battery cell. Therefore, for batteries of different structures, battery voltages of different ranges are obtained. Furthermore, a targeted power supply control method needs to be provided based on battery voltages in different ranges, so that the voltage conversion times are shortened, the conversion efficiency of electric energy is improved, and the endurance time of the battery is further prolonged.
In one embodiment, as shown in fig. 7, there is provided a power supply control circuit 700 comprising:
a battery voltage acquisition unit 720 for acquiring a battery voltage of the electronic device;
the voltage conversion unit 740 is configured to output, through the power chip, the converted voltage by performing at least one voltage conversion on the battery voltage if the battery voltage is higher than a preset voltage threshold, where the converted voltage can be used by a device to be powered in the power supply device;
and a power supply unit 760 for supplying power to the device to be powered by the converted voltage.
In one embodiment, the voltage conversion unit includes a first voltage conversion unit; the power chip comprises a first power chip;
the first voltage conversion unit is used for carrying out primary voltage conversion on the battery voltage through the first power chip to output the converted voltage, and the first power chip can support the voltage conversion on the battery voltage higher than a preset voltage threshold.
In one embodiment, the voltage conversion unit comprises a second voltage conversion unit; the power chip comprises a second power chip;
the second voltage conversion unit is used for carrying out primary voltage conversion on the battery voltage through the second power chip to output the converted voltage, and the second power chip can support the voltage conversion on the battery voltage falling within the preset voltage threshold range; the lower limit of the preset voltage threshold range is the lower limit voltage which can be provided by the battery, and the upper limit of the preset voltage threshold range is the upper limit voltage which can be provided by the battery.
In one embodiment, the voltage conversion unit includes at least one of a first voltage conversion unit, a second voltage conversion unit, and a third voltage conversion unit; as shown in fig. 8 (a), the voltage converting unit 740 includes a first voltage converting unit 742 and a third voltage converting unit 746; as shown in fig. 8 (b), the voltage converting unit 740 includes a second voltage converting unit 744 and a third voltage converting unit 746;
a first voltage conversion unit 742, configured to output the converted voltage by performing one-time voltage conversion on the battery voltage by using a first power chip, where the first power chip can support voltage conversion on the battery voltage higher than a preset voltage threshold;
the second voltage conversion unit 744 is configured to perform a voltage conversion on the battery voltage once through the second power chip to output a converted voltage, where the second power chip can support the voltage conversion on the battery voltage falling within a preset voltage threshold range;
and a third voltage conversion unit 746 for performing voltage conversion on the battery voltage at least twice through the third power chip to output the converted voltage.
In one embodiment, the third voltage conversion unit 746 includes at least one of a half-voltage output buck chip, an adjustable output buck chip, and a third power supply sub-chip; the half-voltage output buck chip and the adjustable output buck chip can support voltage conversion of battery voltage higher than a preset voltage threshold; the third power supply sub-chip can support voltage conversion of the battery voltage lower than a preset voltage threshold;
the half-voltage output voltage reduction chip is used for reducing the battery voltage to one half of the battery voltage, and the voltage corresponding to one half of the battery voltage is used as the input voltage of the third power supply sub-chip;
the adjustable output voltage reduction chip is used for reducing the voltage of the battery to any voltage lower than a preset voltage threshold value, and taking any voltage lower than the preset voltage threshold value as the input voltage of the third power supply sub-chip;
and the third power supply sub-chip is used for carrying out primary voltage conversion on the input voltage of the third power supply sub-chip and outputting the converted voltage.
In one embodiment, the battery voltage obtaining unit is further configured to obtain a voltage of a battery obtained by connecting at least two battery cells in series with each other; or, obtaining the voltage of a battery obtained by connecting at least two power cells in parallel; or, the voltage of the battery of the single battery cell is obtained.
It should be understood that, although the steps in the flowcharts in the above figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the figures described above may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or other steps.
The above-described division of the individual units in the power control circuit is for illustration only, and in other embodiments, the power control circuit may be divided into different units as needed to perform all or part of the functions of the power control circuit.
For specific limitations of the power supply control circuit, reference may be made to the above limitations of the power supply control method, and no further description is given here. The respective units in the above-described power supply control circuit may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, an electronic device is further provided, including a battery, the power supply control circuit, a memory and a processor, where the memory stores a computer program, and the computer program when executed by the processor causes the processor to execute the steps of the power supply control method provided in the foregoing embodiments.
Fig. 9 is a schematic diagram of an internal structure of an electronic device in one embodiment. As shown in fig. 9, the electronic device includes a processor and a memory connected through a system bus. Wherein the processor is configured to provide computing and control capabilities to support operation of the entire electronic device. The memory may include a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The computer program is executable by a processor for implementing a power supply control method provided by the above respective embodiments. The internal memory provides a cached operating environment for operating system computer programs in the non-volatile storage medium. The electronic device may be any terminal device such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant ), a POS (Point of Sales), a car-mounted computer, and a wearable device.
Embodiments of the present application also provide a computer-readable storage medium. One or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform the steps of a power control method.
A computer program product containing instructions that, when run on a computer, cause the computer to perform a power supply control method.
Any reference to memory, storage, database, or other medium used in embodiments of the present application may include non-volatile and/or volatile memory. Suitable nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The above power control examples only represent a few embodiments of the present application, which are described in more detail and detail, but are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. A power supply control method, characterized in that the method comprises:
acquiring the battery voltage of the electronic equipment;
if the battery voltage is higher than a preset voltage threshold of a device to be powered in the electronic equipment, performing primary voltage conversion on the battery voltage through a first power chip of the device to be powered to output converted voltage, wherein the converted voltage can be used by the device to be powered in the electronic equipment; the first power chip can support voltage conversion of battery voltage higher than a preset voltage threshold; the first power supply chip is obtained by adjusting an internal semiconductor process; or alternatively, the first and second heat exchangers may be,
if the battery voltage falls within a preset voltage threshold range of a device to be powered in the electronic equipment, performing primary voltage conversion on the battery voltage through a second power chip of the device to be powered to output converted voltage, wherein the converted voltage can be used by the device to be powered in the electronic equipment; the second power chip can support voltage conversion of battery voltage falling within a preset voltage threshold range; the lower limit of the preset voltage threshold range is the lower limit voltage which can be provided by the battery, and the upper limit of the preset voltage threshold range is the upper limit voltage which can be provided by the battery; the second power chip is obtained by adjusting an internal semiconductor process;
and supplying power to the device to be powered through the converted voltage.
2. The method according to claim 1, wherein the method further comprises:
and carrying out voltage conversion on the battery voltage at least twice through a third power chip to output the converted voltage.
3. The method of claim 2, wherein the third power supply chip comprises a third power supply sub-chip of the device to be powered and at least one of a half-voltage output buck chip, an adjustable output buck chip; the half-voltage output buck chip and the adjustable output buck chip can support voltage conversion of battery voltage higher than a preset voltage threshold; the third power supply sub-chip can support voltage conversion of battery voltage lower than a preset voltage threshold; the step of converting the battery voltage at least twice by the third power chip to output a converted voltage includes:
the battery voltage is reduced to one half of the battery voltage through a half-voltage output voltage reduction chip, and the voltage corresponding to one half of the battery voltage is used as the input voltage of the third power supply sub-chip; or alternatively, the first and second heat exchangers may be,
the battery voltage is reduced to any voltage lower than the preset voltage threshold value through an adjustable output voltage reduction chip, and any voltage lower than the preset voltage threshold value is used as the input voltage of the third power supply sub-chip;
and performing primary voltage conversion on the input voltage of the third power supply sub-chip through the third power supply sub-chip of the device to be powered to output the converted voltage.
4. A method according to any one of claims 1 to 3, wherein the acquiring the battery voltage of the electronic device comprises:
acquiring the voltage of a battery obtained by mutually connecting at least two battery cells in series in the electronic equipment; or alternatively, the first and second heat exchangers may be,
acquiring the voltage of a battery obtained by connecting at least two battery cells in parallel in the electronic equipment; or alternatively, the first and second heat exchangers may be,
the voltage of a battery of a single battery cell in an electronic device is obtained.
5. A power supply control circuit, characterized by comprising:
a battery voltage acquisition unit configured to acquire a battery voltage of the electronic device;
the first voltage conversion unit is used for carrying out primary voltage conversion on the battery voltage through a first power chip of the device to be powered to output converted voltage, and the converted voltage can be used by the device to be powered in the electronic equipment; the first power chip can support voltage conversion of battery voltage higher than a preset voltage threshold; the first power supply chip is obtained by adjusting an internal semiconductor process; or alternatively, the first and second heat exchangers may be,
the second voltage conversion unit is used for carrying out primary voltage conversion on the battery voltage through a second power chip of the device to be powered to output converted voltage, and the converted voltage can be used by the device to be powered in the power supply equipment; the second power chip can support voltage conversion of battery voltage falling within a preset voltage threshold range; the lower limit of the preset voltage threshold range is the lower limit voltage which can be provided by the battery, and the upper limit of the preset voltage threshold range is the upper limit voltage which can be provided by the battery; the second power chip is obtained by adjusting an internal semiconductor process;
and the power supply unit is used for supplying power to the device to be powered through the converted voltage.
6. The power supply control circuit according to claim 5, further comprising a third voltage conversion unit;
the third voltage conversion unit is used for converting the battery voltage at least twice through a third power chip to output the converted voltage.
7. The power supply control circuit of claim 6, wherein the third voltage conversion unit comprises a third power supply sub-chip and at least one of a half-voltage output buck chip and an adjustable output buck chip; the half-voltage output buck chip and the adjustable output buck chip can support voltage conversion of battery voltage higher than a preset voltage threshold; the third power supply sub-chip can support voltage conversion of battery voltage lower than a preset voltage threshold;
the half-voltage output voltage reduction chip is used for reducing the battery voltage to one half of the battery voltage, and taking the voltage corresponding to one half of the battery voltage as the input voltage of the third power supply sub-chip;
the adjustable output voltage reduction chip is used for reducing the battery voltage to any voltage lower than the preset voltage threshold value, and taking any voltage lower than the preset voltage threshold value as the input voltage of the third power supply sub-chip;
the third power supply sub-chip is used for performing primary voltage conversion on the input voltage of the third power supply sub-chip to output the converted voltage.
8. The power supply control circuit according to any one of claims 5 to 7, wherein the battery voltage acquisition unit is further configured to acquire a voltage of a battery obtained by connecting at least two battery cells in series with each other; or, obtaining the voltage of a battery obtained by connecting at least two power cells in parallel; or, the voltage of the battery of the single battery cell is obtained.
9. An electronic device comprising a battery, a power supply control circuit according to any one of claims 5-8, a memory and a processor, the memory having stored therein a computer program, characterized in that the computer program, when executed by the processor, causes the processor to perform the steps of the power supply control method according to any one of claims 1-4.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the power supply control method according to any one of claims 1 to 4.
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| CN105207316A (en) * | 2015-10-28 | 2015-12-30 | 维沃移动通信有限公司 | Battery voltage control chip and method |
| CN110021973A (en) * | 2019-02-03 | 2019-07-16 | 华为技术有限公司 | The method of terminal device and control conversion circuit |
| CN111404220A (en) * | 2020-03-18 | 2020-07-10 | 珠海迈巨微电子有限责任公司 | Battery management chip, battery management system, electronic equipment and power supply method |
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| WO2018068460A1 (en) * | 2016-10-12 | 2018-04-19 | 广东欧珀移动通信有限公司 | Device to be charged and charging method |
| WO2018099257A1 (en) * | 2016-11-30 | 2018-06-07 | 珠海市魅族科技有限公司 | Charging control method, apparatus, computing device and storage medium |
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