CN114465294B - Power management module and electronic equipment - Google Patents
Power management module and electronic equipment Download PDFInfo
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- CN114465294B CN114465294B CN202110834619.2A CN202110834619A CN114465294B CN 114465294 B CN114465294 B CN 114465294B CN 202110834619 A CN202110834619 A CN 202110834619A CN 114465294 B CN114465294 B CN 114465294B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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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
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
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- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The embodiment of the application provides a power management module and electronic equipment. The power management module is applied to an electronic device, the electronic device comprises a battery for providing high voltage and one or more high-voltage power supply demand components, and the power management module comprises: the voltage drop discharging module is connected with the power supply controller and the switch assembly; the voltage drop discharging module is connected with the battery and is used for carrying out voltage drop processing on the output voltage of the battery to obtain the output voltage after voltage drop; the power supply controller is used for supplying power to the high-voltage power supply demand component by adopting the output voltage of the voltage drop discharge module; the switch assembly is connected with the battery, the power supply controller and the high-voltage power supply demand component and used for communicating a connecting branch of the power supply controller and the high-voltage power supply demand component or communicating the battery and the connecting branch of the high-voltage power supply demand component according to the control instruction.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a power management module and electronic equipment.
Background
The inductor is arranged on the power supply branch of the high-voltage power supply component of the electronic equipment and used for boosting voltage to obtain voltage adaptive to the high-voltage requirement of the high-voltage power supply component. However, the following problems exist in the process of the inductor boosting voltage: firstly, the inductor has large volume and the current capacity reaches the limit; secondly, the large voltage difference of the inductor boost results in high power consumption.
Disclosure of Invention
The application provides a power management module and electronic equipment to solve the problem that inductance is bulky, and the current capacity has reached the limit, and the problem that the high power consumption is caused to the big pressure differential that leads to of inductance step-up.
In order to achieve the purpose, the invention provides the following technical scheme:
in a first aspect, the present application provides a power management module applied to an electronic device, where the electronic device includes a battery for providing high voltage, and one or more high-voltage power supply demand components, and the power management module includes: the voltage drop discharging module, a power supply controller connected with the voltage drop discharging module, and a switch assembly; the voltage drop discharging module is connected with the battery and used for carrying out voltage drop processing on the output voltage of the battery to obtain the output voltage after voltage drop; the power supply controller is used for supplying power to the high-voltage power supply demand component by adopting the output voltage of the voltage drop discharge module; the switch assembly is connected with the battery, the power supply controller and the high-voltage power supply demand component and used for communicating a connecting branch of the power supply controller and the high-voltage power supply demand component or communicating the battery and the connecting branch of the high-voltage power supply demand component according to the control instruction.
From the above, it can be seen that: the switch assembly is communicated with a power supply controller and a connecting branch of the high-voltage power supply demand component or communicated with a battery and the connecting branch of the high-voltage power supply demand component according to the control instruction. The connection branch road intercommunication of battery and high voltage power supply demand part, the output voltage of battery is the power supply of high voltage power supply demand part, the battery can provide high voltage, adopt high voltage to supply power for high voltage power supply demand part, the inductance that high voltage power supply demand part is connected steps up the pressure differential and reduces, the volume requirement correspondence of inductance reduces, high voltage power supply demand part can connect the inductance of appropriate volume to propose and feel the discharge current ability, the inductance discharge current ability that can not appear selecting reaches the condition of limit, and, the inductance pressure differential that steps up reduces, the consumption has also been reduced.
In one possible embodiment, a switch assembly includes: the first group of switching tubes and the second group of switching tubes; the number of the switching tubes in the first group of switching tubes and the number of the switching tubes in the second group of switching tubes are the same as the number of the high-voltage power supply demand components; the first group of switching tubes are arranged on a connecting branch of the battery and the high-voltage power supply demand component, and the second group of switching tubes are arranged on a connecting branch of the power supply controller and the high-voltage power supply demand component; the first group of switching tubes and the second group of switching tubes are conducted in a time-sharing mode.
In one possible embodiment, a switch assembly includes: each switch is used for communicating the battery with a connecting branch of the connected high-voltage power supply demand component or communicating the power supply controller with the connecting branch of the connected high-voltage power supply demand component.
In a possible embodiment, the power management module further includes a controller, and the controller is connected to the switch assembly and is configured to generate a control command to control the switch assembly to communicate with the power supply controller and the connection branch of the high-voltage power supply demand component, or communicate with the battery and the connection branch of the high-voltage power supply demand component.
In one possible embodiment, the controller is configured to: determining that the output voltage of the battery is adapted to the voltage requirement of the high-voltage power supply requirement component, and controlling the switch assembly to be communicated with a connection branch of the battery and the high-voltage power supply requirement component; and determining that the output voltage of the battery is not adaptive to the voltage requirement of the high-voltage power supply requirement component, and controlling the switch assembly to be communicated with the power supply controller and the connecting branch of the high-voltage power supply requirement component.
In the above embodiment, the controller determines that the output voltage of the battery is adapted to the voltage requirement of the high-voltage power supply requirement component, controls the switch assembly to communicate with the battery and the connection branch of the high-voltage power supply requirement component, and supplies power to the high-voltage power supply requirement component by the output voltage of the battery; the controller determines that the output voltage of the battery is not adaptive to the voltage requirement of the high-voltage power supply demand component, the control switch assembly is communicated with the power supply controller and a connecting branch of the high-voltage power supply demand component, the power supply controller supplies power to the high-voltage power supply demand component by adopting the output voltage of the voltage drop discharge module, and the power supply controller is ensured to provide the power supply voltage according to the requirement of the high-voltage power supply demand component.
In one possible embodiment, to adapt the output voltage of the battery to the voltage requirement of the high voltage power supply requirement component, the controller is configured to: the output voltage of the battery is acquired, and it is determined that the output voltage of the battery is less than the voltage demand value of the high-voltage power supply demand component.
In one possible embodiment, to adapt the output voltage of the battery to the voltage requirement of the high voltage power supply requirement component, the controller is configured to: acquiring a low-voltage domain voltage of the electronic device and an output voltage of the battery, and determining that a first difference value is smaller than a second difference value, wherein the first difference value refers to: a difference between the output voltage of the battery and the voltage demand value of the high-voltage power supply demand part, the second difference referring to: the difference between the low-voltage domain voltage of the electronic device and the voltage requirement value of the high-voltage power supply requirement component.
In one possible embodiment, to adapt the output voltage of the battery to the voltage requirement of the high voltage power supply requirement component, the controller is configured to: and determining the operation state of the high-voltage power supply demand component with high-voltage demand.
In one possible embodiment, the power management module is configured to be connected to a processor of the electronic device, and the processor is configured to generate a control instruction to control the switch assembly to communicate with the power supply controller and the connection branch of the high-voltage power supply demand component, or to communicate with the battery and the connection branch of the high-voltage power supply demand component.
In a second aspect, the present application provides an electronic device comprising: one or more high voltage power supply requiring components; a battery for supplying a high voltage; and a power management module as provided in the first aspect or any one of the possible implementations of the first aspect.
From the above, it can be seen that: in the power management module, the switch assembly is communicated with a power supply controller and a connecting branch of a high-voltage power supply demand component or communicated with a battery and the connecting branch of the high-voltage power supply demand component according to a control instruction. The connection branch road intercommunication of battery and high voltage power supply demand part, the output voltage of battery is the power supply of high voltage power supply demand part, the battery can provide high voltage, adopt high voltage to supply power for high voltage power supply demand part, the inductance that high voltage power supply demand part is connected steps up the pressure differential reduction, the volume requirement correspondence of inductance reduces, high voltage power supply demand part can connect the inductance of appropriate volume to propose the inductance through-current capacity, the inductance through-current capacity that the selection can not appear reaches the condition of limit, and, the pressure differential that the inductance steps up reduces, the consumption has also been reduced.
In a third aspect, the present application provides an electronic device, comprising: a battery for providing a high voltage, and one or more high voltage power supply requiring components; wherein: each high-voltage power supply demand component is connected with the booster circuit and the buck circuit; the battery is connected with the high-voltage power supply demand component through the boosting circuit or the voltage reduction circuit which is connected with each high-voltage power supply demand component.
From the above, it can be seen that: in the power management module, the battery is connected with the high-voltage power supply demand component through the booster circuit or the step-down circuit connected with each high-voltage power supply demand component. The battery can provide high voltage, adopts high voltage to supply power for high voltage power supply demand part, and the pressure differential that the inductance that high voltage power supply demand part was connected boosted reduces, and the volume requirement of inductance corresponds and reduces, and high voltage power supply demand part can connect the inductance of appropriate volume to propose the inductance through-current capacity, and the inductance through-current capacity that can not appear selecting reaches the condition of limit to, the pressure differential that the inductance boosted reduces, has also reduced the consumption.
In one possible embodiment, the electronic device further includes a controller connected to the voltage boost circuit and the voltage step-down circuit, and configured to control the output voltage of the battery to be boosted by the voltage boost circuit and then provided to the high-voltage power supply demand component when the high-voltage domain voltage output by the battery is less than or equal to the voltage demand value of the high-voltage power supply demand component; when the high-voltage domain voltage output by the battery is smaller than the voltage requirement value of the high-voltage power supply requirement component, the output voltage of the battery is controlled to be reduced through the voltage reduction circuit and then provided for the high-voltage power supply requirement component.
Drawings
Fig. 1 is a schematic composition diagram of a hardware structure of an electronic device according to an embodiment of the present disclosure;
fig. 2 is a power supply circuit diagram of a dual-cell battery provided in an embodiment of the present application;
FIG. 3a is a diagram of a connection circuit of a power management module according to an embodiment of the present application;
fig. 3b is a diagram showing a current flow direction when the switch tube 30 to the switch tube 33 are turned off and the switch tube 34 to the switch tube 37 are turned on in the power management module according to the embodiment of the present application;
fig. 3c is a diagram showing the current flow direction from the switch tube 30 to the switch tube 33 and from the switch tube 34 to the switch tube 37 in the power management module according to the embodiment of the present application;
fig. 3d is a current flow direction diagram of the power management module according to the embodiment of the present application, where the switch tube 33 is turned on and the switch tube 37 is turned off;
fig. 3e is a current flow direction diagram of the power management module according to the embodiment of the present application, in which the switch 33 is turned off and the switch 37 is turned on;
FIG. 4a is a diagram of a connection circuit of a power management module according to another embodiment of the present application;
fig. 4b is a current flow direction display diagram illustrating that the switch 43 connects the low-voltage domain power supply port and the high-voltage power supply demand component in the power management module according to the embodiment of the present application;
fig. 4c is a current flow direction diagram illustrating the connection between the output port of the dual-cell battery and the high-voltage power supply requirement component by the switch 43 in the power management module according to the embodiment of the present application;
fig. 5 is a circuit diagram of an output control method for a power supply voltage according to an embodiment of the present application;
fig. 6 is a connection circuit diagram of an electronic device according to another embodiment of the present application.
Detailed Description
The terms "first", "second" and "third", etc. in the description and claims of this application and the description of the drawings are used for distinguishing between different objects and not for limiting a particular order.
In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Fig. 1 shows a schematic structural diagram of an electronic device 100. The electronic device 100 may be a mobile phone, a tablet Computer, a desktop, a laptop, a notebook, an Ultra-mobile Personal Computer (UMPC), a handheld Computer, a netbook, a Personal Digital Assistant (PDA), a wearable electronic device, a smart watch, and the like.
The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a Universal Serial Bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, a display 170 (flexible screen), a speaker 180, a motor 190, and the like.
It is to be understood that the illustrated structure of the embodiment of the present application does not specifically limit the electronic device 100. In other embodiments of the present application, electronic device 100 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.
Taking a cell phone as an example, the processor 110 may include one or more processing units, such as: the processor 110 may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a memory, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), etc. The different processing units may be separate devices or may be integrated into one or more processors. The processor may be, among other things, a neural center and a command center of the electronic device 100. The processor can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution.
A memory may also be provided in processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 110. If the processor 110 needs to reuse the instruction or data, it can be called directly from memory. Avoiding repeated accesses reduces the latency of the processor 110, thereby increasing the efficiency of the system.
The internal memory 121 may be used to store computer-executable program code, which includes instructions. The processor 110 executes various functional applications of the electronic device 100 and data processing by executing instructions stored in the internal memory 121. The internal memory 121 may include a program storage area and a data storage area. The storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. The storage data area may store data (such as audio data, phone book, etc.) created during use of the electronic device 100, and the like. In addition, the internal memory 121 may include a high-speed random access memory, and may further include a nonvolatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (UFS), and the like.
The charging management module 140 is configured to receive a charging input from a charger. The charging management module 140 may also supply power to the electronic device through the power management module 141 while charging the battery 142.
The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives an input of the battery 142 and/or the charge management module 140, and supplies power to the processor 110, the internal memory 121, the external memory, the mobile communication module 150, the wireless communication module 160, the flexible screen 170, the speaker 180, the motor 190, and the like. The power management module 141 may also be used to monitor parameters such as battery capacity, battery cycle count, battery state of health (leakage, impedance), etc. In other embodiments, the power management module 141 may be disposed in the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may be disposed in the same device.
The motors are divided into an X-axis linear motor and a Z-axis linear motor, and when the motor 190 is an X-axis linear motor, the power supply voltage requirement of the motor 190 is high, and is generally 10V. When the electronic device pursues the stereo effect, the speakers 180 are respectively arranged at the top and the bottom, and the power supply voltage requirements of the two speakers 180 are also higher, up to 12V. When the flexible screen 170 of the electronic device is an OLED screen, the required voltage of the OLED screen is also high, typically 9V.
Moreover, wireless charging technology is more and more applied to electronic equipment, and wireless anti-charging module can be configured on the electronic equipment, and wireless charging technology is adopted to charge other electronic equipment, and along with this, the wireless anti-charging module meets the requirement of 10V or 12V high-voltage power supply.
From the above, it can be seen that: the electronic device has more and more components requiring high voltage power supply, and the power supply capacity of the battery 142 of the electronic device is slightly insufficient in the face of such high voltage power supply requirement. Thus, the battery 142 is changed to a battery capable of providing a high voltage, which can be understood as a battery capable of providing a voltage higher than 3V to 4.5V provided by a single cell battery. A dual cell battery is a battery capable of providing a high voltage, and as shown in fig. 2, a dual cell battery is a battery in which two cells are connected in series. Compared with a single-cell battery, the double-cell battery provides a supply voltage 2 times that of a single-cell battery, and provides high-voltage power supply of 6V to 9V for electronic equipment.
Although a two-cell battery can provide high voltage range power supply capability. However, other components of the electronic device, such as the processor 110, the internal memory 121, the external memory, the mobile communication module 150, the wireless communication module 160, and the like, can only adapt to a power supply environment of 3V to 4.5V, in addition to components requiring high-voltage power supply. And, there may be a scene that requires 3V to 4.5V voltage for the motor, the wireless back charging module, the two speakers and the OLED screen. Therefore, when the dual-cell battery is used for supplying electric energy, the voltage of the dual-cell battery needs to be reduced.
Referring to fig. 2, the output voltage of the dual-cell battery is subjected to voltage reduction processing by the voltage reduction discharge module 2. The voltage after voltage reduction directly supplies power to other parts of the electronic equipment under the control of the power supply controller, and supplies power to high-voltage power supply demand parts such as a wireless reverse charging module, two loudspeakers, a motor, an OLED screen and the like after being boosted by the inductor.
In the process of using the dual-cell battery to supply power to the components in the power supply form shown in fig. 2, the inventor researches and finds the following problems:
1. the loudspeaker has noise problems due to low power drop and inductance saturation.
The voltage range provided by the power supply controller is 3V to 4.5V, which is not enough to support the required voltage of the wireless reverse charging module, the two loudspeakers, the motor and the OLED screen, so that an inductor is arranged on a connecting branch of the power supply controller and each component, and 3V to 4.5V is boosted to the required voltage of the component by the inductor.
When the electric quantity of the dual-cell battery is insufficient, the output voltage of the dual-cell battery further drops, for example, to 2V, and the inductor is in a saturated state and may not support the power supply requirement of the speaker, so that clipping of the output sound waveform of the speaker occurs, and noise occurs.
2. The size of the inductor used for boosting is large, and the current capacity reaches the limit.
Because 2. However, the volume of the inductor cannot be too large under the limitation of the volume of the electronic device. Therefore, the current capacity of the inductors with limited volume is limited.
3. The power consumption is high.
The low-voltage power supply of the low-voltage domain is boosted by the inductor, so that higher power consumption is inevitably brought.
Based on this, this application embodiment provides a power management module, and power management module connects two electric core batteries and charge management module, still connects parts such as wireless anti-module, speaker, motor and OLED screen of charging. The power management module receives the voltage of the double-battery cell and/or the charging management module, supplies power to components in the electronic equipment, and particularly supplies power to high-voltage domain power supply for high-voltage power supply demand components such as a wireless reverse charging module, a loudspeaker, a motor, an OLED screen and the like.
Fig. 3a shows a connection circuit diagram of a power management module according to an embodiment of the present application. In fig. 3a, the super fast charger inputs 20V voltage to the step-down charging module, the step-down charging module steps down the received voltage and then charges the dual-cell battery, and the output voltage of the dual-cell battery is provided to the power management module.
It is understood that the step-down charging module belongs to the module of the charging management module. In addition, the power management module can also receive the voltage output by other chargers.
The power management module that this application embodiment provided includes:
and each first switch tube is connected into a power supply branch of a high-voltage power supply demand component and is also used for connecting a double-cell battery. And the power supply branch of each high-voltage power supply demand component is provided with an inductor. And the switch tube is connected with the power supply branch of each high-voltage power supply demand component and is used for controlling the connection and disconnection of the double-cell battery and the power supply branch of the high-voltage power supply demand component. Fig. 3a shows an example of four high voltage power demanding components of a wireless back-charging module, a speaker, a motor and an OLED screen. An inductor is arranged on the power supply branch circuits of the wireless reverse charging module, the loudspeaker, the motor and the OLED screen. The switch tube 30 is connected with the power supply branches of the double-cell battery and the wireless reverse charging module, the switch tube 31 is connected with the power supply branches of the double-cell battery and the loudspeaker, the switch tube 32 is connected with the power supply branches of the double-cell battery and the motor, and the switch tube 33 is connected with the power supply branches of the double-cell battery and the OLED screen. Fig. 3a shows an access position of the first switch tube to the power supply branch of the high-voltage power supply demand component, and the access position of the first switch tube to the power supply branch of the high-voltage power supply demand component is not limited to the illustration in fig. 3a, and in some embodiments, the first switch tube may be accessed to the common terminal of the high-voltage power supply demand component and the inductor in the power supply branch of the high-voltage power supply demand component.
And a voltage drop discharge module 38 of the double-cell battery is connected, and the voltage drop discharge module 38 performs voltage drop processing on the output voltage of the double-cell battery to obtain a voltage after voltage drop. The droop discharge module 38 may be understood as an integrated circuit including components with a droop function. In some embodiments, the step-down discharge module 38 may be a 2.
The power supply controller 39 is connected to the step-down discharging module 38, and supplies power to the high-voltage power supply demand component and other components using the low-voltage region voltage subjected to the step-down processing by the step-down discharging module 38. In fig. 3a, the power supply controller 39 may also be connected to other chargers, receive input voltages of the other chargers, and supply power to the high-voltage power supply demand components and other components with the input voltages of the other chargers.
And each second switch tube is connected with the power supply controller, is connected into a power supply branch of the high-voltage power supply demand component, and is used for controlling the connection and disconnection of the power supply controller and the power supply branch of the high-voltage power supply demand component. In the example provided in fig. 3a, the switch tube 34 is connected to the power supply controller 39 and is connected to the power supply branch of the wireless reverse charging module, the switch tube 35 is connected to the power supply controller 39 and is connected to the power supply branch of the speaker, the switch tube 36 is connected to the power supply controller 39 and is connected to the power supply branch of the motor, and the switch tube 37 is connected to the power supply controller 39 and is connected to the power supply branch of the OLED screen.
It should also be noted that fig. 3a shows an access position where the second switching tube is connected to the power supply branch of the high-voltage power supply demand component, and the access position where the second switching tube is connected to the power supply branch of the high-voltage power supply demand component is not limited to the illustration in fig. 3a, and in some embodiments, the second switching tube may be connected to a common terminal of the inductor and the high-voltage power supply demand component in the power supply branch of the high-voltage power supply demand component.
The first switch tube and the second switch tube provided in this embodiment do not refer to the switch tubes with different types, but are used to connect the power supply controller and the switch tube of the dual-battery cell differently. In some embodiments, both switching transistors may employ various forms of switching components, such as field effect transistors, switching transistors, and switches.
In this embodiment, the power supply branch of the high-voltage power supply demand component may be connected to the power supply controller 39 through the first switch pipe to receive the voltage in the low-voltage range provided by the power supply controller 39, or may be connected to the dual-cell battery through the second switch pipe to receive the voltage in the high-voltage range of the dual-cell battery. In order to realize that the voltage of a voltage domain is provided for the high-voltage power supply demand component at the same moment, the two switching tubes can be controlled to be conducted at different moments. The method comprises the following specific steps:
the controller (not shown in fig. 3 a) sends a control command to control the group of switching tubes from the switching tube 30 to the switching tube 33 and the group of switching tubes from the switching tube 34 to the switching tube 37 to be turned on at different times, so as to provide the high-voltage domain voltage or the low-voltage domain voltage for the high-voltage power supply demand component. In some embodiments, the controller may be an independent controller, which is disposed in the power management module and generates a control command to control the first switching tube and the second switching tube to be turned on and off. In other embodiments, the controller may be the processor shown in fig. 1, and the processor generates and sends a control instruction to control the first switching tube and the second switching tube to be turned on and off.
Referring to fig. 3b, the controller controls the group of the switch tubes 34 to 37 to be turned on, and controls the group of the switch tubes 30 to 33 to be turned off. The switch tube 34 is switched on, the switch tube 30 is switched off, and the power supply controller 39 supplies the voltage reduced by the voltage drop discharge module 38 to the wireless reverse charging module; the switch tube 35 is turned on, the switch tube 31 is turned off, and the power supply controller 39 supplies power to the speaker by using the voltage reduced by the voltage reduction discharge module 38; the switch tube 36 is switched on, the switch tube 32 is switched off, and the power supply controller 39 supplies power to the motor by using the voltage reduced by the voltage reduction discharge module 38; the switch tube 37 is turned on, the switch tube 33 is turned off, and the power supply controller 39 supplies power to the OLED screen by using the voltage reduced by the voltage drop discharge module 38.
Referring to fig. 3c, the controller controls the switch tube 30 to the switch tube 33 to be turned on, and controls the switch tube 34 to the switch tube 37 to be turned off. The switch tube 30 is switched on, the switch tube 34 is switched off, and the output voltage of the double-cell battery supplies power to the wireless back-charging module; the switch tube 31 is switched on, the switch tube 35 is switched off, and the output voltage of the double-cell battery supplies power to the loudspeaker; the switch tube 32 is switched on, the switch tube 36 is switched off, and the output voltage of the double-battery-cell battery supplies power to the motor; the switch tube 33 is turned on, the switch tube 37 is turned off, and the output voltage of the dual-cell battery supplies power to the OLED screen.
The group of switching tubes from the switching tube 34 to the switching tube 37 is not limited to be turned on or turned off simultaneously, and the group of switching tubes from the switching tube 30 to the switching tube 33 is not limited to be turned on or turned off simultaneously, and can be controlled according to the actual working conditions of the wireless reverse charging module, the loudspeaker, the motor and the OLED screen. As shown in fig. 3d, the wireless back-charging module, the speaker and the motor of the electronic device are not operated, and only the OLED screen of the electronic device is bright. The controller controls the switch tube 33 to be switched on, the switch tube 37 to be switched off, and the output voltage of the double-cell battery supplies power to the OLED screen. The other switching tubes than the switching tube 33 and the switching tube 37 shown in fig. 3d may be in the off state. The OLED screen of the electronic device becomes dark, the OLED screen of the electronic device can be powered by the voltage in the low voltage domain, so that, as shown in fig. 3e, the controller controls the switch tube 33 to be turned off, the switch tube 37 to be turned on, and the power supply controller 39 utilizes the voltage dropped by the voltage drop discharge module 38 to supply power to the OLED screen. Similarly, the other switch tubes except the switch tube 33 and the switch tube 37 shown in fig. 3e may be in the off state.
In this embodiment, the voltage output by the two-cell battery is a high-voltage range voltage of 6V to 9V, and when the set of switching tubes from the switching tube 30 to the switching tube 33 is turned on and the set of switching tubes from the switching tube 34 to the switching tube 37 is turned off, the high-voltage range voltage of the two-cell battery is supplied to the high-voltage power supply demand member to supply power thereto.
The power supply device for the high-voltage power supply demand component by using the voltage of the high-voltage region of the two-cell battery has the following advantages:
1. the voltage range of the high-voltage range output by the two-cell battery is generally 6V to 9V, and when all the high-voltage demand components are supplied with power in the high-voltage range, although the voltage in the high-voltage range also needs to be boosted by the inductance in the power supply branch of the high-voltage demand component, since the voltage in the high-voltage range is approximately twice as high in value as the voltage stepped down by the step-down discharge module 38, the voltage difference of the boosted inductance is greatly reduced, and if the high-voltage range output by the two-cell battery is 8V, when the speaker is supplied with power, the demanded voltage of the speaker is 12V, and the current only needs to be boosted by 4V, which is completely within the current flow capacity of the inductance.
Even if the output voltage of the double-cell battery falls within the range of a low-voltage domain basically under the condition that the electric quantity of the double-cell current is insufficient, the current does not reach the limit, the power supply requirement of the loudspeaker cannot be guaranteed, and therefore clipping of the output sound waveform of the loudspeaker cannot be caused, and noise occurs.
2. As described above, when power is supplied to all high-voltage demand components in a high-voltage range, the voltage difference of the inductor boost pressure is reduced so much that the requirement for the size of the inductor is reduced, and the inductor of an appropriate size is selected to provide the inductor current capacity, so that the selected inductor current capacity does not reach the limit.
3. The high-voltage range voltage consumes less power than the low-voltage power supply in the low-voltage range.
The high-voltage power supply demand components of the electronic equipment do not need high voltage to supply power all the time, and thus the power supply voltage of the high-voltage power supply demand components needs to be switched. In one possible embodiment, the controller monitors the voltage of the low voltage domain, the voltage of the high voltage domain of the electronic device, and the power supply requirement of the high voltage power supply requirement component of the electronic device, and performs voltage switching of the high voltage power supply requirement component according to the monitoring result.
In one possible embodiment, the power management module may include an ADC sampling module, which collects the voltage of the power supply controller 39 and the output voltage of the dual-cell battery and feeds back the sampled values to the controller in real time. The controller compares the sampling value of the voltage of the power supply controller 39 with the required voltage value of the high-voltage power supply demand component, compares the sampling value of the output voltage of the dual-cell battery with the required voltage value of the high-voltage power supply demand component, and switches on the group of switching tubes from the switching tube 30 to the switching tube 33 and the group of switching tubes from the switching tube 34 to the switching tube 37 according to the comparison result.
The implementation manner of the controller for switching on the group of the switching tubes from the switching tube 30 to the switching tube 33 and the group of the switching tubes from the switching tube 34 to the switching tube 37 according to the comparison result is described below by way of an embodiment of the method.
Fig. 4a shows a connection circuit diagram of a power management module according to another embodiment of the present application.
As in the previous embodiment, the super fast charger in fig. 4a charges the dual-cell battery through the voltage drop charging module, and the output voltage of the dual-cell battery is also provided to the power management module. The power management module can also receive the voltage output by other chargers.
The power management module provided by the embodiment comprises: a power supply controller 41, a voltage drop discharge module 42, a change-over switch 43 and a controller 44; wherein:
the voltage drop discharge module 42 is connected to the dual-cell battery, and performs voltage drop processing on the output voltage of the dual-cell battery to obtain a voltage after voltage drop. The droop discharge module 42 may also be understood as an integrated circuit comprising components with a droop function. In some embodiments, the step-down discharge module 42 may also be a 2.
The power supply controller 41 is connected to the droop discharge module 42 and the changeover switch 43. The power supply controller 41 supplies power to another component using the low-voltage drop-processed by the voltage drop discharge module 42, and also uses the low-voltage drop-processed by the voltage drop discharge module 42 as the high-voltage power supply demand component by switching the switch 43. The power supply controller 41 may also be connected to other chargers, receive input voltages of the other chargers, and supply power to the high-voltage power supply demand components and other components with the input voltages of the other chargers.
The changeover switch 43 is connected to the controller 44 and the dual cell battery and is connected to the power supply branch of each high voltage power supply requiring part. The change-over switch 43 comprises multiple switches, each of which can be a single-pole double-throw switch, and realizes double control of the power supply branch of one high-voltage power supply demand component, controlling one: the output port of the double-cell battery is controlled to be connected into a power supply branch of the high-voltage power supply demand component, and the control is two: and controlling the power supply controller 41 to be connected into a power supply branch of the high-voltage power supply demand component.
In the example shown in fig. 4a, the switch 43 comprises four switches, each of which is connected to the power supply branch of the wireless reverse charging module, the power supply branch of the speaker, the power supply branch of the motor, and the power supply branch of the OLED screen. Under the control of the controller 44, the first switch controls the output port of the dual-cell battery or the power supply controller 41 to access the power supply branch of the wireless reverse charging module; the second switch controls the output port of the dual-cell battery or the power supply controller 41 to access the power supply branch of the loudspeaker; the third switch controls the output port of the double-cell battery or the power supply controller 41 to access the power supply branch of the motor; the fourth switch controls the output port of the dual-cell battery or the power supply controller 41 to access the power supply branch of the OLED screen.
The controller 44 may generate control instructions to control the dual-controlled switching of each of the switches in the switch 43. Furthermore, each of the switches in the switch 43 does not necessarily have to be turned on or off at the same time, and the switches in the switch may be controlled to be turned on or off according to the operation requirement of the high-voltage power supply requirement component connected to the switch, and the following description will take the example that the controller controls the multiple switches in the switch 43 to be turned on or off at the same time. As in the previous embodiment, the controller 44 may be a separate controller disposed in the power management module, or may refer to the processor shown in fig. 1.
Referring to fig. 4b, the controller 44 controls each of the switches 43 to turn on the connection between the dual cell battery and the power supply branch of the high voltage power supply requiring part and turn off the connection between the power supply controller 41 and the power supply branch of the high voltage power supply requiring part. The high-voltage domain voltage of two electric core battery outputs is for wireless anti-module, speaker, motor and the OLED screen power supply that fills.
Referring to fig. 4c, the controller 44 controls each switch of the switch 43 to cut off the connection between the dual cell battery and the power supply branch of the high voltage power supply requirement component and to turn on the connection between the power supply controller 41 and the power supply branch of the high voltage power supply requirement component. The power supply controller 41 supplies power to the wireless reverse charging module, the speaker, the motor and the OLED screen by using the voltage reduced by the voltage reduction discharging module 42.
The above embodiment can be referred to by taking advantage of the advantage that the high-voltage range voltage of the two-cell battery supplies power to the high-voltage power supply demand member.
In one possible embodiment, referring to fig. 4a, 4b and 4c, the power management module includes an ADC sampling module 45, and the ADC sampling module 45 respectively collects the voltage of the power supply controller 41 and the output voltage of the dual-cell battery, and feeds back the sampled values to the controller 44 in real time. The controller 44 compares the sampled value of the voltage of the power supply controller 41 and the required voltage value of the high voltage power supply requiring part, the sampled value of the output voltage of the dual cell battery and the required voltage value of the high voltage power supply requiring part, respectively, and realizes the dual control switching of each of the switches 43 according to the comparison result.
The controller implements the dual-control switching of each switch in the switch 43 according to the comparison result, see also the following method embodiments.
The manner for controlling the conduction of different switch tubes or the conduction of multiple switches in the switch to supply the output voltage of the dual-cell battery to the high-voltage power supply demand component or supply the low-voltage domain voltage to the high-voltage power supply demand component provided by the above two embodiments is introduced by the output control method of the power supply voltage provided by the following embodiments. Fig. 5 is a flowchart of an output control method of a power supply voltage according to an embodiment of the present disclosure. The method for controlling output of power supply voltage provided by this embodiment is applied to the electronic device shown in fig. 1, and the method for controlling output of power supply voltage includes:
s501, sampling values of low-voltage domain voltage of the electronic equipment and sampling values of output voltage of the dual-battery cell are obtained.
As described above, the low-voltage domain voltage of the electronic device is obtained by the voltage drop discharge module dropping the output voltage of the dual-cell battery. The ADC sampling module samples the output voltage of the double-cell battery and the voltage after voltage reduction processing of the voltage drop discharge module to obtain a sampling value of the output voltage of the double-cell battery and a sampling value of the low-voltage domain voltage of the electronic equipment.
And S502, respectively comparing the sampled value of the low-voltage domain voltage of the electronic equipment and the sampled value of the output voltage of the dual-battery cell with the voltage requirement value of the high-voltage power supply requirement component.
Since the high-voltage power supply demand components in the electronic apparatus do not always require high voltage to supply power, it is necessary to switch the voltage range of the supply voltage of the high-voltage power supply demand components.
The difference between the sampling value of the output voltage of the dual-cell battery and the voltage requirement value of the high-voltage power supply requirement component is minimum, and S503 is executed; the sampled value of the low-voltage domain voltage of the electronic device and the voltage requirement value of the high-voltage power supply requirement component have the minimum difference, and S504 is executed.
And S503, providing electric energy for high-voltage power supply demand components of the electronic equipment by adopting the output voltage of the double-cell battery.
The difference value between the sampling value of the output voltage of the double-cell battery and the voltage requirement value of the high-voltage power supply demand component is minimum, which indicates that the output voltage of the double-cell battery is adapted to the voltage requirement of the high-voltage power supply demand component, and the output voltage of the double-cell battery needs to be adopted to provide electric energy for the high-voltage power supply demand component of the electronic equipment.
As mentioned above, in the power management module shown in fig. 3a, the group of the switch tubes from the control switch tube 30 to the switch tube 33 is turned on, and the group of the switch tubes from the control switch tube 34 to the switch tube 37 is turned off. The switch tubes 30 to 34 are connected in different time, considering the working status of the wireless back charging module, the speaker, the motor and the OLED screen.
As described above, in the power management module shown in fig. 4a, the control switch 43 connects the output port of the dual-cell battery and the power supply branch of the high-voltage power supply demand component.
And S504, providing electric energy for high-voltage power supply demand parts of the electronic equipment by adopting the low-voltage domain voltage of the electronic equipment.
The difference between the sampling value of the low-voltage domain voltage of the electronic equipment and the voltage requirement value of the high-voltage power supply demand component is minimum, which indicates that the low-voltage domain voltage of the electronic equipment is adapted to the voltage requirement of the high-voltage power supply demand component, and the low-voltage domain voltage of the electronic equipment needs to be adopted to provide electric energy for the high-voltage power supply demand component of the electronic equipment.
As mentioned above, in the power management module shown in fig. 3a, the group of the switch tubes from the control switch tube 30 to the switch tube 33 is turned off, and the group of the switch tubes from the control switch tube 34 to the switch tube 37 is turned on. Similarly, the group of the switch tubes 34 to 37 can be conducted in time division.
As mentioned above, in the power management module shown in fig. 4a, the control switch 43 connects the output port of the low-voltage domain voltage of the electronic device and the power supply branch of the high-voltage power supply demand component.
Steps S503 and S504 are performed to dynamically switch between the high voltage domain and the low voltage domain, thereby optimally achieving both power consumption saving and functions.
In this embodiment, when the sampled values of the low-voltage domain voltage of the electronic device and the sampled values of the output voltage of the dual-battery cell collected in step S501 are both smaller than the voltage of the high-voltage power supply demand component, the steps S502 to S504 may be performed according to the scheme, and the following description is given by way of an example.
In one example, the wireless back-charging module charges the electronic device with 7V, and the required voltage value of the wireless back-charging module is 7V. If the low-voltage domain voltage value of the power management module of the electronic equipment is 4V, the high-voltage domain is 8V. Considering that if the high-voltage domain 8V supplies power to the 7V, the voltage supplied to the wireless reverse charging module is too large due to the inductance boosting, even if the difference between the output voltage of the dual-cell battery and the voltage requirement of the wireless reverse charging module is minimum, the low-voltage domain voltage needs to be used for supplying power to the wireless reverse charging module.
With the continuous discharge of the double-battery cell, the low-voltage domain voltage value of the power management module drops to 3V, the high-voltage domain voltage is 6V, the low-voltage domain voltage of the electronic equipment and the high-voltage domain voltage output by the double-battery cell are both smaller than the voltage requirement value of the wireless reverse charging module, and in order to avoid the problem that the inductor is raised to be high, the high-voltage domain voltage with the minimum difference value is adopted to supply power to the wireless reverse charging module.
From the above example it follows that: if the sampling value of the output voltage of the dual-cell battery collected in step S501 is smaller than the voltage of the high-voltage power supply demand component, it can be basically determined that the output voltage of the dual-cell battery is adapted to the voltage demand of the high-voltage power supply demand component. Therefore, one condition for switching the high-voltage range voltage of the electronic device to supply power to the high-voltage power feeding demand component may be: the sampling value of the output voltage of the dual-cell battery is smaller than the voltage of the high-voltage power supply demand component.
The high-voltage range voltage and the low-voltage range voltage of the electronic device may be switched to supply power to the high-voltage power supply demand member, or may be based on an operation state of the high-voltage power supply demand member.
When the high-voltage power supply demand component is in the running state of high-voltage demand, the electronic equipment supplies power for the high-voltage power supply demand component by adopting the high-voltage domain voltage of the double-cell battery, and when the high-voltage power supply demand component is in the running state of low-voltage demand, the electronic equipment supplies power for the high-voltage power supply demand component by adopting the low-voltage domain voltage.
The following three examples list three scenarios in which power is supplied to a high-voltage power supply demand component by switching between a high-voltage range voltage and a low-voltage range voltage of an electronic device.
Example one: the wireless reverse charging module charges non-standard equipment and is in a running state with low-voltage requirements, and under the condition, the electronic equipment provides voltage of a low-voltage domain for the wireless reverse charging module. The wireless reverse charging module charges the target equipment and is in a running state with high-voltage requirements, and the electronic equipment provides voltage of a high-voltage domain for the wireless reverse charging module.
Example two: the loudspeaker outputs audio data in a loudspeaker mode, the loudspeaker is in a running state with high voltage requirements, and the electronic equipment provides voltage of a high voltage domain for the loudspeaker. The loudspeaker outputs audio data in a receiver mode, the loudspeaker is in an operation state with low voltage requirement, and the electronic equipment provides voltage of a low voltage domain for the loudspeaker.
Example three: the OLED screen becomes dark and is in an operation state with low-voltage requirements, and the electronic equipment adopts the voltage of a low-voltage domain to supply power for the OLED screen. The OLED screen is bright and is in a running state with high-voltage requirements, and the electronic equipment supplies power to the OLED screen by adopting the voltage of a high-voltage domain.
High-voltage power supply demand parts such as a wireless reverse charging module, a loudspeaker, a motor, an OLED screen and the like are connected with the double-cell battery, and high-voltage domain voltage output by the double-cell battery is used for supplying power for the high-voltage power supply demand parts such as the wireless reverse charging module, the loudspeaker, the motor, the OLED screen and the like, so that the problems of large inductance volume, limited through-current capacity and high power consumption can be solved.
Based on this, the first switch tube (switch tube 30 to switch tube 33) and the second switch tube (switch tube 34 to switch tube 37) shown in fig. 3a may be optional, and the output end of the power supply controller may also be not connected to the power supply branches of the high-voltage power supply demand components such as the wireless back-charging module, the speaker, the motor, and the OLED screen, and only the output end of the dual-core battery is connected to the power supply branches of the high-voltage power supply demand components such as the wireless back-charging module, the speaker, the motor, and the OLED screen.
Similarly, the switch 43, the controller 44 and the ADC sampling module 45 shown in fig. 4a may also be optional, and power supply branches of high-voltage power supply demand components such as the wireless reverse charging module, the speaker, the motor and the OLED screen are directly connected to the output end of the dual-cell battery.
In order to adapt that the high-voltage domain voltage output by the dual-battery cell can be directly provided to the high-voltage power supply demand component, another embodiment of the present application provides an electronic device, and fig. 5 shows a connection circuit diagram of the electronic device provided by the embodiment of the present application.
Fig. 6 shows an electronic device, in which a power management module includes: the device comprises a voltage drop discharge module and a power supply controller. The voltage drop discharge module is connected with a battery for providing high voltage, such as a double-battery cell, and the voltage drop discharge module performs voltage drop processing on the high-voltage domain voltage output by the double-battery cell to obtain low-voltage domain voltage. The power supply controller is connected with the voltage drop discharge module, and supplies power to other components by using the low-voltage domain voltage subjected to voltage drop processing by the voltage drop discharge module. The power supply controller can also be connected with other chargers, receive input voltages of the other chargers and supply power to other components by using the input voltages of the other chargers.
Each high-voltage power supply demand component needs to be connected with a voltage boosting circuit and a voltage reducing circuit, and is connected with the output end of the double-cell battery through the voltage boosting circuit and the voltage reducing circuit. In fig. 6, the wireless back-charging module, the speaker, the motor and the OLED screen are respectively connected to a voltage boosting circuit and a voltage reducing circuit.
The electronic equipment that this embodiment provided can also the controller, and the controller generates the high-voltage domain voltage of the output of control command control bi-cell battery and passes through boost circuit after boosting, provides in high voltage power supply demand parts such as wireless anti-module, speaker, motor and OLED screen of charging, perhaps reduces the voltage through the step-down circuit after, provides in high voltage power supply demand parts such as wireless anti-module, speaker, motor and OLED screen of charging. Of course, the controller may also employ the processor shown in FIG. 1.
In an optional embodiment, when the high-voltage domain voltage output by the dual-battery cell is less than the voltage requirement value of the high-voltage power supply demand component, the controller controls the output voltage of the dual-battery cell to be boosted by the boost circuit and then provided to the high-voltage power supply demand component such as the wireless reverse charging module, the speaker, the motor and the OLED screen. When the high-voltage domain voltage output by the double-cell battery is greater than the voltage demand of the high-voltage power supply demand component, the controller controls the output voltage of the double-cell battery to be reduced through the voltage reduction circuit and then be provided for the high-voltage power supply demand components such as the wireless reverse charging module, the loudspeaker, the motor and the OLED screen.
Claims (8)
1. A power management module applied to an electronic device including a battery for supplying high voltage and one or more high-voltage power demand components, the power management module comprising:
the voltage drop discharging module, a power supply controller connected with the voltage drop discharging module, and a switch assembly;
the voltage drop discharging module is connected with the battery and used for carrying out voltage drop processing on the output voltage of the battery to obtain the output voltage after voltage drop;
the power supply controller is used for supplying power to the high-voltage power supply demand component by adopting the output voltage of the voltage drop discharge module;
the switch assembly is connected with the battery, the power supply controller and the high-voltage power supply demand component and is used for communicating a connecting branch of the power supply controller and the high-voltage power supply demand component or communicating the battery and the connecting branch of the high-voltage power supply demand component according to a control instruction;
the power management module further comprises a controller, wherein the controller is connected with the switch assembly and is used for generating a control instruction to control the switch assembly to be communicated with the power supply controller and a connecting branch of the high-voltage power supply demand component or to be communicated with the battery and the connecting branch of the high-voltage power supply demand component; the controller determines that the output voltage of the battery is matched with the voltage requirement of the high-voltage power supply requirement component, and controls the switch assembly to be communicated with the battery and a connecting branch of the high-voltage power supply requirement component; and determining that the output voltage of the battery is not suitable for the voltage requirement of the high-voltage power supply requirement component, and controlling the switch assembly to communicate the power supply controller with the connecting branch of the high-voltage power supply requirement component.
2. The power management module of claim 1, wherein the switch assembly comprises: the first group of switching tubes and the second group of switching tubes;
the number of the switching tubes in the first group of switching tubes and the number of the switching tubes in the second group of switching tubes are the same as the number of the high-voltage power supply demand components; the first group of switching tubes are arranged on a connecting branch of the battery and the high-voltage power supply demand component, and the second group of switching tubes are arranged on a connecting branch of the power supply controller and the high-voltage power supply demand component; the first group of switching tubes and the second group of switching tubes are conducted in a time-sharing mode.
3. The power management module of claim 1, wherein the switch assembly comprises: the change over switch, the change over switch includes the multiple switch, and each way switch is connected one the high voltage power supply demand part the battery with power supply controller, each way the switch is used for the intercommunication the battery with connect the branch road of connecting of high voltage power supply demand part, perhaps the intercommunication power supply controller with connect the branch road of connecting of high voltage power supply demand part.
4. The power management module of claim 1, wherein to determine that the output voltage of the battery is adapted to the voltage requirement of the high voltage power demand component, the controller is configured to:
acquiring the output voltage of the battery;
determining that the output voltage of the battery is less than the voltage demand value of the high-voltage power supply demand component.
5. The power management module of claim 1, wherein to determine that the output voltage of the battery is adapted to the voltage requirement of the high voltage power demand component, the controller is configured to:
acquiring the output voltage of the voltage drop discharging module and the output voltage of the battery;
determining that a first difference is less than a second difference, the first difference referring to: a difference between the output voltage of the battery and the voltage demand value of the high-voltage power supply demand component, the second difference referring to: the difference between the output voltage of the droop discharge module and the voltage demand value of the high-voltage power supply demand component.
6. The power management module of claim 1, wherein to determine that the output voltage of the battery is adapted to the voltage requirement of the high voltage power demand component, the controller is configured to:
and determining the operation state of the high-voltage power supply demand component in high-voltage demand.
7. The power management module according to any one of claims 1 to 3, wherein the power management module is configured to be connected to a processor of the electronic device, and the processor is configured to generate the control command to control the switch assembly to communicate with the power supply controller and the connection branch of the high-voltage power supply demand component, or to communicate with the battery and the connection branch of the high-voltage power supply demand component.
8. An electronic device, comprising:
one or more high voltage power supply requiring components;
a battery for supplying a high voltage;
and a power management module as claimed in any one of claims 1 to 7.
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| US5814972A (en) * | 1993-05-13 | 1998-09-29 | Canon Kabushiki Kaisha | Electronic apparatus having multiple loads, driven by plural batteries |
| CN108377009A (en) * | 2017-01-31 | 2018-08-07 | 丰田自动车株式会社 | Power supply system |
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