CN114465294A - Power management module and electronic equipment - Google Patents

Abstract

Embodiments of the present application provide a power management module and an electronic device. The power management module is applied to electronic equipment. The electronic equipment includes a battery that provides high voltage and one or more high-voltage power supply demand components. The power management module includes: a voltage drop discharge module, a power supply controller connected to the voltage drop discharge module, and a switch assembly; The voltage drop discharge module is connected to the battery, and is used to step down the output voltage of the battery to obtain the output voltage after the voltage drop; the power supply controller is used to use the output voltage of the voltage drop discharge module to supply power to the high-voltage power supply demand components; the switch component is connected The battery, the power supply controller and the high-voltage power supply demand component are used for connecting the connection branch between the power supply controller and the high-voltage power supply demand component, or the connection branch between the battery and the high-voltage power supply demand component according to the control instruction.

Description

Power Management Modules and Electronics

technical field

The present invention relates to the field of electronic technology, in particular to a power management module and an electronic device.

Background technique

An inductor is provided on the power supply branch of the high-voltage power supply component of the electronic device, which is used for boosting the voltage to obtain a voltage suitable for the high-voltage demand of the high-voltage power supply component. However, there are the following problems in the process of boosting the voltage of the inductor: first, the inductor is large in size, and the current capacity has reached the limit; second, the large voltage difference of the inductor boosting leads to high power consumption.

SUMMARY OF THE INVENTION

The present application provides a power management module and an electronic device to solve the problems of large size of the inductor, the current capacity reaching the limit, and the problem of high power consumption caused by the large voltage difference of the inductor boost.

To achieve the above object, the present invention provides the following technical solutions:

In a first aspect, the present application provides a power management module, which is applied to an electronic device. The electronic device includes a battery that provides a high voltage and one or more high-voltage power supply demand components. The power management module includes: a voltage drop discharge module, and The power supply controller connected to the voltage drop discharge module, and the switch components; the voltage drop discharge module is connected to the battery, and is used to step down the output voltage of the battery to obtain the output voltage after the voltage drop; the power supply controller is used to use the voltage drop discharge module The output voltage of the device is used to supply power to the high-voltage power supply demand components; the switch component is connected to the battery, the power supply controller and the high-voltage power supply demand component, and is used to connect the connection branch between the power supply controller and the high-voltage power supply demand component according to the control command, or to connect the battery and the high-voltage power supply. Connection branch of the required component.

It can be seen from the above content that the switch assembly communicates the connection branch between the power supply controller and the high-voltage power supply demand component, or the connection branch between the battery and the high-voltage power supply demand component according to the control instruction. The connection branch between the battery and the high-voltage power supply demand component is connected, and the output voltage of the battery supplies power to the high-voltage power supply demand component. The battery can provide high voltage, and the high voltage is used to supply the high-voltage power supply demand component. The difference is reduced, the volume requirements of the inductance are correspondingly reduced, and the high-voltage power supply demand components can be connected to the inductance of the appropriate volume to propose the inductance current capacity, and the current capacity of the selected inductance will not reach the limit. The difference is reduced, and the power consumption is also reduced.

In a possible implementation manner, the switch assembly includes: a first group of switch transistors and a second group of switch transistors; the number of switch transistors in the first group of switch transistors and the number of switch transistors in the second group of switch transistors are related to the high-voltage power supply The number of required components is the same; the first group of switch tubes is arranged on the connection branch between the battery and the high-voltage power supply demand component, and the second group of switch tubes is arranged on the connection branch between the power supply controller and the high-voltage power supply demand component; the first group of switch tubes and The second group of switch tubes is turned on in a time-sharing manner.

In a possible embodiment, the switch assembly includes: a switch, the switch includes multiple switches, each switch is connected to a high-voltage power supply demand component, a battery and a power supply controller, and each switch is used to connect the battery and the connected high-voltage power supply The connection branch of the demand component, or the connection branch connecting the power supply controller and the connected high-voltage power supply demand component.

In a possible implementation manner, the power management module further includes a controller, the controller is connected to the switch assembly for generating a control command to control the switch assembly to connect the power supply controller and the connection branch of the high-voltage power supply demand component, or to connect the battery and the high-voltage power supply Connection branch of the required component.

In a possible implementation manner, the controller is used to: determine that the output voltage of the battery is suitable for the voltage demand of the high-voltage power supply demand component, control the switch assembly to connect the connection branch between the battery and the high-voltage power supply demand component; determine that the output voltage of the battery does not meet the voltage demand of the high-voltage power supply demand component; The voltage demand of the high-voltage power supply demand component is controlled, and the switch assembly is connected to the connection branch between the power supply controller and the high-voltage power supply demand component.

In the above embodiment, the controller determines that the output voltage of the battery is adapted to the voltage demand of the high-voltage power supply demand component, controls the switch assembly to connect the connection branch between the battery and the high-voltage power supply demand component, and the output voltage of the battery supplies power to the high-voltage power supply demand component; control The controller determines that the output voltage of the battery does not meet the voltage requirements of the high-voltage power supply demand component, and controls the switch component to connect the connection branch between the power supply controller and the high-voltage power supply demand component. The power supply ensures that the power supply voltage is provided according to the requirements of the high-voltage power supply demand components.

In a possible embodiment, in order to determine that the output voltage of the battery is adapted to the voltage demand of the high-voltage power supply demand component, the controller is configured to: obtain the output voltage of the battery, and determine that the output voltage of the battery is less than the voltage demand value of the high-voltage power supply demand component.

In a possible implementation manner, in order to determine that the output voltage of the battery is adapted to the voltage demand of the high-voltage power supply demand component, the controller is configured to: obtain the low-voltage domain voltage of the electronic device and the output voltage of the battery, and determine that the first difference is smaller than the second difference Difference, the first difference refers to: the difference between the output voltage of the battery and the voltage demand value of the high-voltage power supply demand component, and the second difference refers to: the difference between the low-voltage domain voltage of the electronic device and the voltage demand value of the high-voltage power supply demand component difference.

In a possible implementation manner, in order to determine that the output voltage of the battery is adapted to the voltage demand of the high-voltage power demand component, the controller is configured to: determine that the high-voltage power demand component is in a high-voltage demand operating state.

In a possible implementation, 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 connect the power supply controller and the connection branch of the high-voltage power supply demand component, or to connect the battery and the high-voltage power supply. Connection branch for power demand components.

In a second aspect, the present application provides an electronic device, comprising: one or more high-voltage power supply demand components; a battery for providing high voltage; and as provided in the first aspect or any possible implementation manner of the first aspect Power Management Module.

It can be seen from the above content that in the power management module, the switch component connects the connection branch between the power supply controller and the high-voltage power supply demand component, or the connection branch between the battery and the high-voltage power supply demand component according to the control instruction. The connection branch between the battery and the high-voltage power supply demand component is connected, and the output voltage of the battery supplies power to the high-voltage power supply demand component. The battery can provide high voltage, and the high voltage is used to supply the high-voltage power supply demand component. The difference is reduced, the volume requirements of the inductance are correspondingly reduced, and the high-voltage power supply demand components can be connected to the inductance of the appropriate volume to propose the inductance current capacity, and the current capacity of the selected inductance will not reach the limit. The difference is reduced, and the power consumption is also reduced.

In a third aspect, the present application provides an electronic device, comprising: a battery for providing high voltage, and one or more high-voltage power supply demand components; wherein: each high-voltage power supply demand component is connected to a boost circuit and a step-down circuit; The battery is connected to the high-voltage power-demanding components through a booster circuit or a step-down circuit connected to each high-voltage power supply-demanding component, respectively.

It can be seen from the above content that: in the power management module, the battery is connected to the high-voltage power supply demand component through the booster circuit or the step-down circuit connected to each high-voltage power supply demand component, respectively. The battery can provide high voltage, and high voltage is used to supply power to the high-voltage power supply demand components. The voltage difference of the inductor boosting connected to the high-voltage power supply demand components is reduced, and the volume requirements of the inductance are correspondingly reduced. When the inductance current capacity is proposed, the selected inductance current capacity will not reach the limit, and the voltage difference of the inductance boost is reduced, which also reduces the power consumption.

In a possible embodiment, the electronic device further includes a controller with a boost circuit and a step-down circuit, for controlling the output voltage of the battery 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 After being boosted by the boost circuit, it is provided to the high-voltage power supply demand components; when the high-voltage domain voltage output by the battery is less than the voltage demand value of the high-voltage power supply demand component, the output voltage of the control battery is stepped down by the step-down circuit and provided to the high-voltage power supply demand. part.

Description of drawings

1 is a schematic composition diagram of a hardware structure of an electronic device provided by an embodiment of the present application;

FIG. 2 is a power supply circuit diagram of a dual-cell battery provided by an embodiment of the present application;

FIG. 3a is a connection circuit diagram of a power management module provided by an embodiment of the present application;

FIG. 3b is a diagram showing the current flow of the power management module provided by the embodiment of the application, in which the switch tube 30 and the switch tube 33 are turned off, and the current from the switch tube 34 to the switch tube 37 is turned on;

3c is a diagram showing the current flow from the switch tube 30 to the switch tube 33 when the switch tube 30 is turned on, and the switch tube 34 to the switch tube 37 is turned off in the power management module provided by the embodiment of the application;

FIG. 3d is a diagram showing the current flow when the switch tube 33 is turned on and the switch tube 37 is turned off in the power management module provided by the embodiment of the application;

FIG. 3e is a diagram showing the current flow of the power management module provided by the embodiment of the application, in which the switch tube 33 is turned off and the switch tube 37 is turned on;

FIG. 4a is a connection circuit diagram of a power management module provided by another embodiment of the present application;

4b is a diagram showing the current flow of the switch 43 connecting the low-voltage domain power supply port and the high-voltage power supply demand component in the power management module provided by the embodiment of the application;

4c is a diagram showing the current flow of the switch 43 connecting the output port of the dual-cell battery and the high-voltage power supply demand component in the power management module provided by the embodiment of the application;

5 is a circuit diagram of an output control method for a power supply voltage provided by 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 ways

The terms "first", "second" and "third" in the description and claims of the present application and the description of the drawings are used to distinguish different objects, rather than to limit a specific order.

In this application, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also no Other elements expressly listed, or which are also inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes 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 computer, a laptop computer, a notebook computer, an Ultra-mobile Personal Computer (UMPC), a handheld computer, a netbook, a Personal Digital Assistant (PDA), Devices such as wearable electronics and smart watches.

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 charge 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 screen 170 (flexible screen), a speaker 180, a motor 190, and the like.

It can be understood that the structures illustrated in the embodiments of the present application do not constitute a specific limitation on the electronic device 100 . In other embodiments of the present application, the electronic device 100 may include more or less components than shown, or combine some components, or separate some components, or arrange different components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Taking a mobile phone as an example, the processor 110 may include one or more processing units. For example, the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), Image signal processor (ISP), controller, memory, video codec, digital signal processor (DSP), baseband processor, and/or neural-network processing unit, NPU), etc. Wherein, different processing units may be independent devices, or may be integrated in one or more processors. The processor may be the nerve center and command center of the electronic device 100 . The processor can generate an operation control signal according to the instruction operation code and timing signal, and complete the control of fetching and executing instructions.

A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in processor 110 is cache memory. This memory may hold instructions or data that have just been used or recycled by the processor 110 . If the processor 110 needs to use the instruction or data again, it can be called directly from memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby increasing the efficiency of the system.

Internal memory 121 may be used to store computer executable program code, which includes instructions. The processor 110 executes various functional applications and data processing of the electronic device 100 by executing the instructions stored in the internal memory 121 . The internal memory 121 may include a storage program area and a storage data area. The storage program area can store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), and the like. The storage data area may store data (such as audio data, phone book, etc.) created during the use of the electronic device 100 and the like. In addition, the internal memory 121 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash storage (UFS), and the like.

The charging management module 140 is used to receive charging input from the charger. While the charging management module 140 charges the battery 142 , it can also supply power to the electronic device through the power management module 141 .

The power management module 141 is used for connecting the battery 142 , the charging management module 140 and the processor 110 . The power management module 141 receives input from 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, etc. . The power management module 141 can also be used to monitor parameters such as battery capacity, battery cycle times, battery health status (leakage, impedance). In some other embodiments, the power management module 141 may also be provided in the processor 110 . In other embodiments, the power management module 141 and the charging management module 140 may also be provided in the same device.

The motor is divided into an X-axis linear motor and a Z-axis linear motor. When the motor 190 adopts an X-axis linear motor, the power supply voltage requirement of the motor 190 is relatively high, generally 10V. When the electronic device pursues the stereo effect, the speakers 180 are arranged at the top and the bottom respectively, and the power supply voltage requirements of the two speakers 180 are also relatively high, up to 12V. When the flexible screen 170 of the electronic device adopts an OLED screen, the required voltage of the OLED screen is also relatively high, generally 9V.

Not only that, wireless charging technology is more and more used in electronic devices, and electronic devices will be equipped with wireless reverse charging modules, and use wireless charging technology to charge other electronic devices. 12V high voltage power supply needs.

It can be seen from the above content that there are more and more components on the electronic device that require high-voltage power supply. In the face of so many high-voltage power supply requirements, the power supply capability of the battery 142 of the electronic device is slightly insufficient. In this way, the battery 142 is changed to a battery that can provide a high voltage, and a battery that provides a high voltage can be understood as a battery that can provide a voltage higher than 3V to 4.5V provided by a single-cell battery. A dual-cell battery is a battery that can provide high voltage. As shown in Figure 2, a dual-cell battery is a battery with two cells connected in series. Compared with the single-cell battery, the dual-cell battery can provide twice the power supply voltage, which brings the high-voltage power supply of 6V to 9V to the electronic equipment.

Although the dual-cell battery can provide high-voltage power supply capability. However, in addition to the components requiring high-voltage power supply, 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, etc., can only be adapted to 3V to 4.5V power supply environment. Moreover, the motor, wireless reverse charging module, two speakers and OLED screen will also have scenes that require 3V to 4.5V voltage. Therefore, when a dual-cell battery is used to provide electrical energy, the voltage of the dual-cell battery also needs to be stepped down.

Referring to Figure 2, the output voltage of the dual-cell battery is subjected to step-down processing by the 2:1 step-down and discharge module to obtain the voltage of the low-voltage domain of the electronic device. On the one hand, the voltage after the step-down processing is controlled by the power supply controller to directly supply power to other components of the electronic equipment, and on the other hand, after the inductive boost, it supplies high-voltage power supply components such as the wireless reverse charging module, two speakers, motors, and OLED screens. powered by.

In the process of using a dual-cell battery to supply power to components in an electronic device using the power supply form shown in Figure 2, the inventor found the following problems:

1. The speaker has noise problems due to low power drop and inductor 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, two speakers, motor and OLED screen, so the inductance is set on the connection branch of the power supply controller and each component, The 3V to 4.5V is boosted by the inductor to the required voltage of the part.

When the power of the dual-cell battery is insufficient, the output voltage of the dual-cell battery will further drop, for example, to 2V, and the inductance may not be able to support the power supply demand of the speaker if the inductance is in a saturated state, resulting in clipping of the output sound waveform of the speaker and noise.

2. The inductor used for boosting is large in size, and the current capacity has reached the limit.

Due to the voltage output by the 2:1 step-down and discharge module, the voltage difference is relatively large compared to the demanded voltage of the wireless reverse charging module, two speakers, motors, and OLED screens. Considering the insufficient power of the dual-cell battery , it is necessary to set a large inductance. However, under the limitation of the volume of the electronic device itself, the volume of the inductor cannot be too large. Therefore, the current capacity of the volume-constrained inductor has reached its limit.

3. High power consumption.

The low-voltage power supply in the low-voltage domain, and then boosted by the inductor, will inevitably bring about higher power consumption.

Based on this, an embodiment of the present application provides a power management module. The power management module is connected to a dual-cell battery and a charging management module, and also connected to components such as a wireless reverse charging module, a speaker, a motor, and an OLED screen. The power management module receives the voltage of the dual-cell battery and/or the charging management module, and supplies power to the components in the electronic device, especially to provide high-voltage domain power supply for high-voltage power supply-demanding components such as wireless reverse charging modules, speakers, motors, and OLED screens.

FIG. 3 a shows a connection circuit diagram of a power management module provided by an embodiment of the present application. In Figure 3a, the super fast charger inputs 20V voltage to the voltage drop charging module, the voltage drop 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 can be understood that the voltage drop 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 provided by the embodiment of the present application includes:

A plurality of first switch tubes, each first switch tube is connected to a power supply branch of a high-voltage power supply demand component, and is also used for connecting a dual-cell battery. The power supply branch of each high-voltage power supply demand component is provided with an inductance. The switch tube connected to the power supply branch of each high-voltage power supply demand component is used to control the connection and disconnection of the double-cell battery and the power supply branch of the high-voltage power supply demand component. Figure 3a shows examples of four high-voltage power-demanding components, a wireless reverse charging module, a speaker, a motor, and an OLED screen. An inductor is arranged on the power supply branch of the wireless reverse charging module, the speaker, the motor and the OLED screen. The switch tube 30 is connected to the power supply branch of the dual-cell battery and the wireless reverse charging module, the switch tube 31 is connected to the power supply branch of the dual-cell battery and the speaker, and the switch tube 32 is connected to the power supply branch of the dual-cell battery and the motor. 33 Connect the power supply branch of the dual-cell battery and the OLED screen. Figure 3a shows an access position where the first switch tube is connected to the power supply branch of the high-voltage power supply demand component, and the access position of the first switch tube connected to the power supply branch of the high-voltage power supply demand component is not limited to that shown in Figure 3a , in some embodiments, the first switch tube may be connected 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.

The voltage drop discharge module 38 of the dual-cell battery is connected, and the voltage drop discharge module 38 performs step-down processing on the output voltage of the dual-cell battery to obtain the voltage after the voltage drop. The voltage drop discharge module 38 can be understood as an integrated circuit including components with a voltage drop function. In some embodiments, the voltage drop and discharge module 38 may be a 2:1 step-down discharge module, which is used to step down the high-voltage range voltage of 6V to 9V output by the dual-cell battery to a low-voltage range voltage of 3V to 4.5V.

The power supply controller 39 is connected to the voltage drop and discharge module 38, and uses the low-voltage domain voltage processed by the voltage drop and discharge module 38 to supply power to the high-voltage power supply demand components and other components. In FIG. 3a, the power supply controller 39 may also be connected to other chargers, receive the input voltages of the other chargers, and supply power to the high-voltage power supply-demanding components and other components with the input voltages of the other chargers.

A plurality of second switch tubes, each of which is connected to the power supply controller, and is connected to a power supply branch of a high-voltage power supply demand component, and is used to control the communication between the power supply controller and the power supply branch of the high-voltage power supply demand component. circuit breaker. 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, and the switch tube 36 is connected to The power supply controller 39 is connected to the power supply branch of the motor, and the switch tube 37 is connected to the power supply controller 39 and 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 switch tube is connected to the power supply branch of the high-voltage power supply demand component, and the access position of the second switch tube connected to the power supply branch of the high-voltage power supply demand component. Not limited to what is shown in FIG. 3a, in some embodiments, the second switch tube may be connected 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.

The first switch tube and the second switch tube provided in this embodiment do not mean that there are different types of switch tubes, but to distinguish the switch tubes connected to the power supply controller and the dual-cell battery. In some embodiments, the two switching transistors can use various forms of switching components such as field effect transistors, switching triodes, and switches.

In this embodiment, the power supply branch of the high-voltage power supply demand component can be connected to the power supply controller 39 through the first switch tube to receive the voltage in the low-voltage domain provided by the power supply controller 39, and can also be connected to the dual-cell battery through the second switch tube Connect to receive the voltage in the high voltage range of the dual-cell battery. In order to provide a voltage in the voltage domain for the high-voltage power supply demand components at the same time, the two switches can be controlled to be turned on at different times. details as follows:

The controller (not shown in Figure 3a) sends control commands to control the group of switch tubes from 30 to 33, and the group of switches from 34 to 37 to be turned on at different times to supply high-voltage power. Parts provide high voltage domain voltage or low voltage domain voltage. In some embodiments, the controller may be an independent controller, which is arranged in the power management module, and generates a control command to control the turn-on and turn-off of the first switch tube and the second switch tube. In other embodiments, the controller may be the processor shown in FIG. 1 , and the processor generates and sends control instructions to control the turn-on and turn-off of the first switch tube and the second switch tube.

Referring to FIG. 3b , the controller controls the group of switch tubes from 34 to 37 to turn on, and controls the group of switches from 30 to 33 to turn off. The switch tube 34 is turned on, the switch tube 30 is turned off, and the power supply controller 39 uses the voltage reduced by the voltage drop discharge module 38 to charge 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 uses the voltage drop The voltage reduced by the discharge module 38 supplies power to the speaker; the switch tube 36 is turned on, the switch tube 32 is turned off, and the power supply controller 39 uses the voltage reduced by the voltage drop discharge module 38 to supply power to the motor; 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 group of switch tubes from 30 to 33 to turn on, and controls the group of switches from 34 to 37 to turn off. The switch tube 30 is turned on, the switch tube 34 is turned off, and the output voltage of the dual-cell battery supplies power to the wireless reverse charging module; the switch tube 31 is turned on, the switch tube 35 is turned off, and the output voltage of the dual-cell battery supplies power to the speaker; the switch tube 32 When turned on, the switch tube 36 is turned off, and the output voltage of the dual-cell battery supplies power to the motor; the switch tube 33 is turned on, and 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 switch tubes from switch tube 34 to switch tube 37 is not limited to be on or off at the same time, and the group of switch tubes from switch tube 30 to switch tube 33 is not limited to be on or off at the same time. The actual working conditions of the motor and OLED screen are controlled. As shown in Figure 3d, the wireless reverse charging module, speaker and motor of the electronic device are not running, and only the OLED screen of the electronic device is on. The controller controls the switch tube 33 to be turned on, the switch tube 37 to be turned off, and the output voltage of the dual-cell battery supplies power to the OLED screen. All other switch tubes except the switch tube 33 and the switch tube 37 shown in FIG. 3d may be in an off state. The OLED screen of the electronic device is dimmed, and the OLED screen of the electronic device can be powered by the voltage in the low-voltage domain. In this way, 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 uses the voltage. The voltage reduced by the step-down and discharge module 38 supplies power to the OLED screen. Similarly, all other switch tubes except the switch tube 33 and the switch tube 37 shown in FIG. 3e may be in an off state.

In this embodiment, the voltage output by the dual-cell battery is a high-voltage voltage of 6V to 9V, and the group of switch tubes from switch tube 30 to switch tube 33 is turned on, and the group of switch tubes from switch tube 34 to switch tube 37 is controlled. When the deadline is reached, the high-voltage domain voltage of the dual-cell battery is provided to the high-voltage power supply demand component to supply power.

Using the high-voltage voltage of the dual-cell battery to supply power to the high-voltage power supply demand components has the following advantages:

1. The voltage range of the high-voltage region output by the dual-cell battery is generally 6V to 9V. When the high-voltage region is used to supply power to all high-voltage demand components, although the high-voltage region voltage also needs to pass through the high-voltage demand component. However, due to the voltage in the high-voltage range, the value is nearly twice as high as the voltage after the voltage drop by the voltage drop discharge module 38. Therefore, the voltage difference of the inductor boost is greatly reduced. For example, the high-voltage range output by the dual-cell battery is 8V, when the speaker is powered, the required voltage of the speaker is 12V, and the current only needs to raise the voltage by 4V, which is completely within the current capacity of the inductor.

Even if the power of the dual-cell current is insufficient, the output voltage of the dual-cell battery drops, and it basically falls within the range of the low-voltage range, so that the current will not reach the limit and the power supply needs of the speaker cannot be guaranteed, so it is not necessary. It will cause clipping of the output sound waveform of the speaker, and noise will appear.

2. As mentioned above, using the high-voltage region to supply power to all high-voltage components, the voltage difference of the inductor boost is greatly reduced, and the volume requirements of the inductor are also reduced. Select the appropriate size of the inductor to improve the inductance current capacity, which will not A situation occurs where the current capacity of the selected inductor reaches its limit.

3. Compared with the low-voltage power supply in the low-voltage domain, the voltage in the high-voltage domain has less power consumption.

The high-voltage power supply-demanding components of electronic equipment do not require high-voltage power supply all the time, so it is necessary to switch the power supply voltage of the high-voltage power supply-demanding components. In a possible implementation, the controller monitors the low voltage domain voltage of the electronic device, the high voltage domain voltage, and the power supply demand of the high voltage power supply demand component of the electronic device, and performs voltage switching of the high voltage power supply demand component according to the monitoring result.

In a possible implementation, 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 sampled value of the voltage of the power supply controller 39 with the demanded voltage value of the high-voltage power supply demand component, the sampling value of the output voltage of the dual-cell battery and the demanded voltage value of the high-voltage power supply demand component, and realizes according to the comparison results. The group of switch tubes from the switch tube 30 to the switch tube 33 and the group of switch tubes from the switch tube 34 to the switch tube 37 are switched and turned on.

According to the comparison result, the controller realizes the realization of switching on the group of switch tubes from the switch tube 30 to the switch tube 33 and the switch tube from the switch tube 34 to the switch tube 37. introduce.

FIG. 4a shows a connection circuit diagram of a power management module provided by another embodiment of the present application.

Similar to 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 voltages from other chargers.

The power management module provided in this embodiment includes: a power supply controller 41, a voltage drop discharge module 42, a switch 43 and a controller 44; wherein:

The voltage drop discharge module 42 is connected to the dual-cell battery, and performs step-down processing on the output voltage of the dual-cell battery to obtain the voltage after the voltage drop. The voltage drop discharge module 42 can also be understood as an integrated circuit including components with a voltage drop function. In some embodiments, the voltage drop discharge module 42 can also be a 2:1 step-down discharge module, which is used to step down the high-voltage voltage from 6V to 9V output by the dual-cell battery to a low-voltage voltage from 3V to 4.5V.

The power supply controller 41 is connected to the voltage drop discharge module 42 and the switch 43 . The power supply controller 41 uses the low-voltage domain voltage processed by the voltage drop and discharge module 42 to supply power to other components, and also uses the low-voltage domain voltage processed by the voltage drop and discharge module 42 to supply high-voltage power supply demand components through the switch 43 . The power supply controller 41 can also be connected to other chargers, receive input voltages of other chargers, and supply power to high-voltage power supply-demanding components and other components with the input voltages of other chargers.

The 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 demand component. The switch 43 includes multiple switches, and each switch can be a single-pole, double-throw switch to realize dual control of the power supply branch of a high-voltage power supply demand component. Control one: control the output port of the dual-cell battery to access the high-voltage power supply demand component. Power supply branch, control 2: control the power supply controller 41 to access the power supply branch of the high-voltage power supply demand component.

In the example shown in FIG. 4a, the switch 43 includes four switches, each of which is respectively 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 is connected to the power supply branch of the wireless reverse charging module; the second switch controls the output port or power supply of the dual-cell battery The controller 41 is connected to the power supply branch of the speaker; the third switch controls the output port of the dual-cell battery or the power supply controller 41 is connected to the power supply branch of the motor; the fourth switch controls the output port or power supply of the dual-cell battery The controller 41 is connected to the power supply branch of the OLED screen.

The controller 44 can generate control instructions to control the switching of the dual control of each switch in the switch 43 . In addition, each switch in the switch 43 does not have to be turned on or off at the same time, and the switches in the switch can be controlled to be turned on or off according to the operating requirements of the high-voltage power supply demand components connected to the switch. The multiple switches in the switch 43 are simultaneously turned on or off for description as an example. Similar to the above-mentioned embodiment, the controller 44 may be an independent controller provided in the power management module, or may refer to the processor shown in FIG. 1 .

Referring to Fig. 4b, the controller 44 controls each switch in the switch 43 to turn on the connection between the dual-cell battery and the power supply branch of the high-voltage power supply demand component, and cut off the power supply controller 41 and the power supply branch of the high-voltage power supply demand component. road connection. The high-voltage voltage output by the dual-cell battery powers the wireless reverse charging module, speakers, motors and OLED screens.

Referring to Fig. 4c, the controller 44 controls each switch in the switch 43 to cut off the connection between the dual-cell battery and the power supply branch of the high-voltage power supply demand component, and turn on the power supply controller 41 and the power supply branch of the high-voltage power supply demand component. road connection. The power supply controller 41 uses the voltage reduced by the voltage drop discharge module 42 to supply power to the wireless reverse charging module, the speaker, the motor and the OLED screen.

The advantages of using the high-voltage voltage of the dual-cell battery to supply power to the high-voltage power supply-demanding components can be referred to in the above-mentioned embodiments.

In a possible implementation, referring to FIG. 4a, FIG. 4b and FIG. 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 uses The sampled values are fed back to the controller 44 in real time. The controller 44 compares the sampling value of the voltage of the power supply controller 41 with the demanded voltage value of the high-voltage power supply demand component, the sampling value of the output voltage of the dual-cell battery and the demanded voltage value of the high-voltage power supply demand component, and according to the comparison results. The switching of dual control of each switch in the switch 43 is realized.

The controller implements the implementation manner of switching the dual control of each switch in the switch 43 according to the comparison result, also refer to the content of the following method embodiments.

The above-mentioned two embodiments provide the control of the conduction of different switch tubes, or the conduction of the multi-way switch in the switch, to realize that the output voltage of the dual-cell battery is provided to the high-voltage power supply demand components, or the low-voltage domain voltage is provided to the high-voltage power supply. The way of requiring components is introduced through the output control method of the power supply voltage provided by the following embodiments. FIG. 5 is a flowchart of a method for outputting a power supply voltage according to an embodiment of the present application. The method for controlling the output of the power supply voltage provided in this embodiment is applied to the electronic device shown in FIG. 1 , and the method for controlling the output of the power supply voltage includes:

S501. Acquire a sampled value of a low-voltage domain voltage of the electronic device and a sampled value of an output voltage of a dual-cell battery.

As mentioned above, the low-voltage domain voltage of the electronic device is obtained by reducing the output voltage of the dual-cell battery by the voltage-drop discharge module. The ADC sampling module samples the output voltage of the dual-cell battery and the voltage after step-down processing by the voltage drop discharge module to obtain the sampled value of the output voltage of the dual-cell battery and the sampled value of the low-voltage domain voltage of the electronic device.

S502 , respectively compare the sampled value of the low-voltage domain voltage of the electronic device and the sampled value of the output voltage of the dual-cell battery with the voltage demand value of the high-voltage power supply demand component.

The high-voltage power supply-demanding components in electronic equipment do not always require high voltage to supply power, so it is necessary to switch the voltage domain of the power supply voltage of the high-voltage power supply-demanding components.

The difference between the sampling value of the output voltage of the dual-cell battery and the voltage demand value of the high-voltage power supply demand component is the smallest, and S503 is executed; the difference between the sampling value of the low-voltage domain voltage of the electronic device and the voltage demand value of the high-voltage power supply demand component is the smallest, and S504 is executed. .

S503, the output voltage of the dual-cell battery is used to provide electric energy for the high-voltage power supply demand components of the electronic equipment.

The difference between the sampling value of the output voltage of the dual-cell battery and the voltage demand value of the high-voltage power supply demand component is the smallest, indicating that the output voltage of the dual-cell battery is adapted to the voltage demand of the high-voltage power supply demand component, and the output of the dual-cell battery needs to be used. Voltage, which provides power to the high-voltage power-demanding components of electronic equipment.

As mentioned above, in the power management module shown in FIG. 3a , the group of switches from 30 to 33 is controlled to be turned on, and the group of switches from 34 to 37 is controlled to be turned off. The group of switch tubes from switch tube 30 to switch tube 34 can be turned on in a time-sharing manner, and the working status of the wireless reverse charging module, speaker, motor and OLED screen should be considered.

As mentioned 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.

S504 , using the low-voltage domain voltage of the electronic device to provide electrical energy for the high-voltage power supply demand components of the electronic device.

The difference between the sampling value of the low-voltage domain voltage of the electronic device and the voltage demand value of the high-voltage power supply demand component is the smallest, indicating that the low-voltage domain voltage of the electronic device is adapted to the voltage demand of the high-voltage power supply demand component, and the low-voltage domain voltage of the electronic device needs to be used. The high-voltage power supply demand components of electronic equipment provide electrical energy.

As mentioned above, in the power management module shown in FIG. 3a , the group of switches from 30 to 33 is controlled to be off, and the group of switches from 34 to 37 is controlled to be turned on. Similarly, the group of switch tubes from the switch tube 34 to the switch tube 37 can also be turned on by 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 dynamically switch the high-voltage domain and the low-voltage domain, so as to optimally realize power saving and function balance.

In this embodiment, the solution can be provided according to steps S502 to S504 only when the sampled value of the low-voltage domain voltage of the electronic device and the sampled value of the output voltage of the dual-cell battery collected in step S501 are both smaller than the voltage of the high-voltage power supply demand component Execute, and the following illustrates why with an example.

In an example, the wireless reverse charging module uses 7V to charge the electronic device, and the required voltage value of the wireless reverse charging module is 7V. If the voltage value of the low-voltage domain of the power management module of the electronic device is 4V, and the high-voltage domain is 8V. Considering that if the high-voltage domain 8V supplies power to 7V, the voltage supplied to the wireless reverse charging module is too large due to the inductance boost, so even if the difference between the output voltage of the dual-cell battery and the voltage demand of the wireless reverse charging module is the smallest, A low-voltage domain voltage needs to be used to power the wireless reverse charging module.

With the continuous discharge of the dual-cell battery, the voltage value of the low-voltage domain of the power management module drops to 3V, and the voltage of the high-voltage domain is 6V. The low-voltage domain voltage of the electronic equipment and the high-voltage domain voltage output by the dual-cell battery are both lower than Voltage demand value, in order to avoid the aforementioned problem of high inductance voltage, the high-voltage domain voltage with the smallest difference is used to supply power to the wireless reverse charging module.

From the above example, it can be concluded that as long as the sampling value of the output voltage of the dual-cell battery collected in step S501 is less than the voltage of the high-voltage power supply demand component, it can basically be determined that the output voltage of the dual-cell battery is suitable for the high-voltage power supply demand component. voltage requirements. Therefore, a condition for switching the high-voltage domain voltage of the electronic device to supply power to the high-voltage power supply-demanding component may also be that the sampled value of the output voltage of the dual-cell battery is lower than the voltage of the high-voltage power supply-demanding component.

The high-voltage domain voltage and the low-voltage domain voltage of the electronic equipment can be switched to supply power to the high-voltage power supply-demanding components, and can also be based on the operating status of the high-voltage power supply-demanding components.

When the high-voltage power supply demand component is in the high-voltage demand operation state, the electronic device uses the high-voltage domain voltage of the dual-cell battery to supply power to the high-voltage power supply demand component. When the high-voltage power supply demand component is in the low-voltage demand operation state, the electronic device uses the low-voltage domain voltage. Supply power to high-voltage power-demanding components.

The following three examples enumerate three scenarios in which the high-voltage domain voltage and the low-voltage domain voltage of the electronic device are switched to supply power to the high-voltage power supply demand components.

Example 1: The wireless reverse charging module charges non-standard devices and is in a low-voltage operating state. In this case, the electronic device provides the wireless reverse charging module with voltage in the low-voltage domain. The wireless reverse charging module charges the target device and is in a high-voltage demand operation state, and the electronic device provides the wireless reverse charging module with a voltage in the high-voltage domain.

Example 2: The speaker outputs audio data in the external amplifier mode, and is in a high-voltage demand operation state, and the electronic device provides the speaker with a voltage in the high-voltage domain. The speaker outputs audio data in an earpiece mode, and is in a low-voltage demand operating state, and the electronic device provides the speaker with a voltage in the low-voltage domain.

Example 3: The OLED screen is dimmed and in a low-voltage operating state, and the electronic device uses the voltage in the low-voltage domain to power the OLED screen. The OLED screen turns bright and is in a high-voltage demand operation state, and the electronic device uses the voltage in the high-voltage domain to power the OLED screen.

Connect the high-voltage power supply components such as the wireless reverse charging module, speaker, motor, and OLED screen to the dual-cell battery, and use the high-voltage domain voltage output by the dual-cell battery to provide high-voltage power supply requirements such as the wireless reverse charging module, speaker, motor, and OLED screen. Powering the components can avoid the problems of large inductance, the current capacity has reached the limit, and the problem of high power consumption.

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 not be The power supply branch that connects the high-voltage power supply-demanding components such as the wireless reverse charging module, speaker, motor, and OLED screen, and only the output end of the dual-cell battery is connected to the power supply of the high-voltage power supplying components such as the wireless reverse charging module, speaker, motor, and OLED screen. branch.

Similarly, the switch 43, the controller 44, and the ADC sampling module 45 shown in FIG. 4a can also be optional. The output of the cell battery.

In order to adapt the high-voltage domain voltage output by the dual-cell battery to be directly provided to components requiring high-voltage power supply, 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 that in the electronic device, the power management module includes: a voltage drop discharge module and a power supply controller. The voltage drop discharge module is connected to a battery that provides a high voltage, such as a dual-cell battery, and the voltage drop discharge module performs step-down processing on the high-voltage domain voltage output by the dual-cell battery to obtain a low-voltage domain voltage. The power supply controller is connected to the voltage drop discharge module, and uses the low-voltage domain voltage processed by the voltage drop discharge module to supply power to other components. The power supply controller can also be connected to other chargers, receive the input voltage of other chargers, and supply power to other components with the input voltage of other chargers.

Each high-voltage power supply demand component needs to be connected to a boost circuit and a step-down circuit, and is connected to the output end of the dual-cell battery through the boost circuit and the step-down circuit. In Figure 6, the wireless reverse charging module, speaker, motor and OLED screen are respectively connected with a boost circuit and a step-down circuit.

The electronic device provided in this embodiment can also be provided with a controller, and the controller generates a control command to control the output of the dual-cell battery. and other high-voltage power supply demand components, or after the step-down circuit is stepped down, it is provided for high-voltage power supply demand components such as wireless reverse charging modules, speakers, motors, and OLED screens. Of course, the controller can also use the processor shown in FIG. 1 .

In an optional embodiment, when the high-voltage domain voltage output by the dual-cell battery is less than the voltage demand value of the high-voltage power supply demand component, the controller controls the output voltage of the dual-cell battery to be boosted by the booster circuit, and then provided in the High-voltage power supply components such as wireless reverse charging modules, speakers, motors, and OLED screens. When the high-voltage domain voltage output by the dual-cell battery is greater than the voltage demand of the high-voltage power supply component, the controller controls the output voltage of the dual-cell battery to step down through the step-down circuit, and then provides it to the wireless reverse charging module, speaker, motor and OLED. Parts that require high voltage power supply such as screens.

Claims (12)

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 used for communicating the power supply controller with a connection branch of the high-voltage power supply demand component or communicating the battery with the connection branch of the high-voltage power supply demand component according to a control instruction.

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 according to any one of claims 1 to 3, further comprising a controller, wherein the controller is connected to the switch assembly, and 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 communicate with the battery and the connection branch of the high-voltage power supply demand component.

5. The power management module of claim 4, wherein the controller is configured to:

determining that the output voltage of the battery is matched with the voltage requirement of the high-voltage power supply requirement component, and controlling 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.

6. The power management module of claim 5, 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.

7. The power management module of claim 5, 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.

8. The power management module of claim 5, 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.

9. 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.

10. 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 9.

11. 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 a boosting circuit and a voltage reduction circuit;

the battery is connected with the high-voltage power supply demand component through a voltage boosting circuit or a voltage reducing circuit which is connected with the high-voltage power supply demand component.

12. The electronic device according to claim 11, further comprising a controller connected to the voltage boost circuit and the voltage step-down circuit, for controlling the output voltage of the battery to be boosted by the voltage boost circuit and then supplied 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 greater 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 a voltage reduction circuit and then is provided for the high-voltage power supply requirement component.

Images