CN116667506A

CN116667506A - Discharge circuit, discharge method thereof and electronic equipment

Info

Publication number: CN116667506A
Application number: CN202310963146.5A
Authority: CN
Inventors: 邓旭同
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-08-02
Filing date: 2023-08-02
Publication date: 2023-08-29
Anticipated expiration: 2043-08-02
Also published as: CN116667506B

Abstract

The application relates to a discharge circuit, a discharge method thereof and electronic equipment, and relates to the technical field of electronics. The method is used for solving the problem that the proportion of the actual discharge quantity to the total capacity of the batteries is low under the scene that a plurality of batteries in one electronic device are discharged simultaneously. The discharging circuit is used for discharging the electric device. The discharge circuit includes at least two batteries. The input/output end of the first battery is used for being coupled with the power end of the electric device. The output end of the second battery is used for being coupled with the power end of the electric device. The input and output ends of the first battery and the output end of the second battery are coupled through the power end of the power utilization device. Wherein the impedance between the first battery and the electrical device is smaller than the impedance between the second battery and the electrical device. The first battery is configured to discharge the electrical device. The second battery is configured to discharge the electrical device and to charge the first battery at least once while maintaining the electrical device discharged.

Description

Discharge circuit, discharge method thereof and electronic equipment

Technical Field

The disclosure relates to the technical field of electronics, and in particular relates to a discharge circuit, a discharge method thereof and electronic equipment.

Background

With the rapid development of electronic devices, there is a growing product form of an electronic device having a plurality of batteries. The plurality of batteries can increase the total battery capacity of the electronic device, thereby bringing longer endurance time and other benefits to the electronic device.

However, in the current scenario that a plurality of batteries in one electronic device are discharged at the same time, there is a problem that the actual discharge amount is low in proportion to the total capacity of the batteries.

Disclosure of Invention

The embodiment of the application provides a discharging circuit, a discharging method thereof and electronic equipment, which are used for solving the problem that the proportion of the actual discharge capacity to the total capacity of batteries is lower in a scene that a plurality of batteries in the electronic equipment are discharged simultaneously.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme:

in a first aspect, a discharge circuit is provided. The discharging circuit is used for discharging the electric device. The discharge circuit includes at least two batteries. The at least two batteries include a first battery and a second battery. The input/output end of the first battery is used for being coupled with the power end of the electric device. The output end of the second battery is used for being coupled with the power end of the electric device. The input and output ends of the first battery and the output end of the second battery are coupled through the power end of the power utilization device. Wherein the impedance between the first battery and the electrical device is smaller than the impedance between the second battery and the electrical device. The first battery is configured to discharge the electrical device. The second battery is configured to discharge the electrical device and to charge the first battery at least once while maintaining the electrical device discharged.

In the application, the electric devices comprise a light-load scene and a heavy-load scene. The electric device being in a heavy-load scene refers to the electric device being in a scene with high requirement for electric quantity, for example, the electronic device is in high power consumption application such as running games. The light load of the electric device refers to the situation that the electric device is in a low load state, such as a standby state, of the electronic device, where the electric device needs less electric quantity. Under the condition that the electric device is in a heavy-load scene, a single battery is insufficient to meet the requirement of the electric device on the electric quantity, and a plurality of batteries are required to discharge the electric device at the same time. Under the condition that the electric device is in a light-load scene, a single battery can meet the requirement of the electric device on electric quantity, and only one battery can supply power to the electric device.

It will be appreciated that hereinafter a single battery discharges an electrical device, meaning that the electrical device may be in a light load scenario; the two batteries discharge the electric device, which means that the electric device can be in a light load scene or a heavy load scene.

Illustratively, the first battery is closer to the circuit board and the second battery is farther from the circuit board, so that the impedance between the first battery and the circuit board is less than the impedance between the second battery and the circuit board.

Since the impedance between the first battery and the circuit board is smaller than the impedance between the second battery and the circuit board, the current value of the first current output by the first battery to the circuit board is larger than the current value of the second current output by the second battery to the circuit board under the condition that the output voltages of the first battery and the second battery are the same. Illustratively, in a heavy-duty scenario, the current output by the first battery powers the circuit board and the current output by the second battery powers the circuit board.

When the difference between the output voltage of the second battery and the output voltage of the first battery is large and the electric device is in a light load scene, the output voltage of the second battery charges the first battery while keeping discharging the electric device. It will be appreciated that at this point the electrical device is powered by the second battery.

A part of the output voltage of the second battery (which may be referred to as a first component voltage) supplies power to the electric device, and another part of the output voltage of the second battery (which may be referred to as a second component voltage) charges the first battery. By charging the first battery, the polarization voltage of the discharge of the first battery can be eliminated.

In the application, in the process that the first battery and the second battery discharge to the electric device, the second battery charges the first battery at least once, so that the polarization voltage of the first battery discharge is eliminated, and the voltage value of the overall output voltage of the two batteries to the electric device can be improved, thereby improving the discharge capacity of the two batteries to the electric device. In addition, the second battery charges the first battery every time, and the electric quantity of the first battery is close to the electric quantity of the second battery, so that the situation that the first battery is exhausted and the second battery still remains electric quantity and is not discharged is reduced and even prevented, and the discharge quantity of the two batteries to the power utilization device is improved. Thus, under the condition that the discharge capacity of the two batteries is improved, the proportion of the actual discharge capacity of the two batteries to the total capacity of the batteries can be improved.

In some possible implementations of the first aspect, the discharge circuit further includes a boost unit. The boosting unit is connected in series between the input and output ends of the first battery and the power supply end of the electric device. The boosting unit is configured to boost a voltage charged by the second battery to the first battery.

The voltage boosting unit can boost the voltage of the second battery for charging the first battery, so that the higher voltage charges the first battery, and the speed of eliminating the polarized voltage discharged by the first battery can be improved. The two batteries can be charged between two heavy-load scenes spaced by the electric device conveniently.

It will be appreciated that the second battery may charge the first battery for a longer period of time, and that there may be a heavy load scenario where the second battery has not yet charged the fully powered device, and the first battery has to continue to discharge the powered device. The second battery can charge the first battery quickly by using the boosting unit, so that the charging time of the first battery is shortened. Therefore, the situation that the first battery is not fully charged and the electric device is continuously discharged due to the fact that the electric device is in a heavy-load scene can be greatly reduced or even prevented.

In the application, under the condition that the electric quantity of the first battery is lower than that of the second battery, the second battery can charge the first battery by utilizing the voltage boosting unit, so that the polarization voltage of the first battery in discharge can be rapidly eliminated, and the voltage value of the integral output voltage of the two batteries to the power utilization device can be rapidly improved, thereby improving the discharge quantity of the two batteries to the power utilization device. The voltage boosting unit can quickly eliminate the polarization voltage of the first battery discharge, so that the two batteries can be convenient for coping with various discharge scenes of the electric devices.

In some possible implementations of the first aspect, the boost unit is further configured to boost a voltage discharged by the first battery to the electrical consumer.

In the stage of discharging the first battery, when the first battery is coupled with the power supply end of the electric device through the voltage boosting unit, the voltage boosting unit can also boost the voltage discharged by the first battery, and meanwhile, the second battery also discharges the electric device. At this time, the voltage of the power supply port of the electric device is the sum of the voltage of the first battery after the step-up processing of the output voltage and the output voltage of the second battery. It can be understood that the voltage boosting unit can also boost the voltage discharged by the first battery, so that the first battery can meet the voltage requirement required by the electric device under the condition of outputting lower voltage, and the discharging effect of the first battery is improved.

In some possible implementations of the first aspect, the discharge circuit further includes a switching unit. The switch unit is connected in series between the input and output ends of the first battery and the power end of the electric device. The switching unit is configured to conduct or disconnect the coupling between the input/output terminal of the first battery and the power source terminal of the electric device.

After the two batteries simultaneously discharge the electric device for a period of time, the switching unit may disconnect the coupling between the input/output terminal of the first battery and the power port of the electric device. So that the first battery can no longer discharge the consumer and the second battery discharges the consumer.

After the first battery stops discharging and the second battery discharges the electric device for a period of time, the switching unit turns on the coupling between the input and output ends of the first battery and the power port of the electric device again. At this time, there is a pressure difference between the first battery and the second battery. The first battery keeps a state of stopping discharging when the electric device is in a light load scene, and the second battery can charge the first battery while discharging to the electric device. The second battery charges the first battery, and the polarization voltage of the first battery discharge can be eliminated.

In the application, in the process that the two batteries discharge the electric device together, the second battery can charge the first battery, so that the polarization voltage of the first battery in discharge is eliminated, and the voltage value of the overall output voltage of the two batteries to the electric device can be improved, thereby improving the discharge capacity of the two batteries to the electric device. In addition, the second battery charges the first battery every time, and the electric quantity of the first battery is close to the electric quantity of the second battery, so that the situation that the first battery is exhausted and the second battery still remains electric quantity and is not discharged is reduced and even prevented, and the discharge quantity of the two batteries to the power utilization device is improved. Thus, under the condition that the discharge capacity of the two batteries is improved, the proportion of the actual discharge capacity of the two batteries to the total capacity of the batteries can be improved.

In some possible implementations of the first aspect, the discharge circuit further includes a first equalization unit and a second equalization unit. The first equalization unit is connected in series between the input and output ends of the first battery and the power end of the electric device. The second equalization unit is connected in series between the output end of the second battery and the power end of the electric device. And the first equalization unit is configured to adjust the voltage and/or current of the discharge of the first battery to the electric device. The second equalization unit is configured to regulate a voltage and/or a current at which the second battery discharges to the electrical device.

Two batteries of full charge can discharge the electrical device at the same time. In the process that the first battery and the second battery discharge to the electric device at the same time, the electric device can sample the output voltage of the first battery and also sample the output voltage of the second battery. Under the condition that the output voltage of the first battery is smaller than the output voltage of the second battery when the electric device is used for sampling, the first control command can be output to increase the impedance of the first equalization unit, the second control command is output to reduce the impedance of the second equalization unit, so that the output current of the first battery is smaller than the output current of the second battery, and the electric quantity of the first battery can gradually approach to the electric quantity of the second battery after a period of time. Similarly, in the case where the output voltage of the first battery is greater than the output voltage of the second battery, the first control command may be output to decrease the impedance of the first equalization unit and the second control command may be output to increase the impedance of the second equalization unit, so that the output current of the first battery is greater than the output current of the second battery, so that the electric quantity of the first battery may gradually approach the electric quantity of the second battery after a period of time.

The first equalization unit and the second equalization unit can flexibly allocate the discharge current of the first battery and the discharge current of the second battery, can enable the electric quantity of the first battery to be close to the electric quantity of the second battery, reduce or even prevent the condition that the first battery is exhausted and the second battery still has no residual electric quantity to be discharged, and improve the discharge quantity of the two batteries to the power utilization device.

In some possible implementations of the first aspect, the first equalization unit is further configured to switch on or off a coupling between the input and output terminals of the first battery and the power supply terminal of the electrical device.

Meanwhile, the first equalization unit has the same function as the switch unit, so that the first equalization unit can have the same beneficial effects of the switch unit, and the description is omitted here.

In some possible implementations of the first aspect, the capacity of the first battery is less than the capacity of the second battery.

The capacity of the second battery is larger than that of the first battery, so that the second battery can conveniently charge the first battery with more capacity, and the charging effect of the second battery on the first battery is guaranteed. In addition, in the process that the two batteries discharge the electric devices together, the discharging time of the second battery is longer than the discharging time of the first battery, so that the capacity of the second battery is greater than that of the first battery, the first battery and the second battery can be conveniently and simultaneously exhausted, the conditions that the second battery is exhausted and the first battery still has residual electric quantity and is not discharged are reduced or even prevented, and the discharging quantity of the two batteries to the circuit board is improved. Thus, under the condition that the discharge capacity of the two batteries is improved, the proportion of the actual discharge capacity of the two batteries to the total capacity of the batteries can be improved.

In a second aspect, a discharge method is provided. The discharge circuit is applied to the discharge circuit. The discharging circuit is used for discharging the electric device. The discharge circuit includes at least two batteries. The at least two batteries include a first battery and a second battery. The input/output end of the first battery is used for being coupled with the power end of the electric device. The output end of the second battery is used for being coupled with the power end of the electric device. The input and output ends of the first battery and the output end of the second battery are coupled through the power end of the power utilization device. Wherein the impedance between the first battery and the electrical device is smaller than the impedance between the second battery and the electrical device. The method comprises the following steps: and in the process of controlling the first battery and the second battery to discharge to the electric device together, at least once, controlling the first battery to stop discharging and controlling the second battery to charge the first battery while keeping discharging to the electric device.

In some possible implementations of the second aspect, the discharge circuit further includes a boost unit. The boosting unit is connected in series between the input and output ends of the first battery and the power supply end of the electric device. Controlling the second battery to charge the first battery while maintaining discharge to the electrical device, comprising: the second battery is controlled to output the first component voltage to the electric device. The control boosting unit performs boosting processing on the second component voltage output by the second battery, and charges the first battery with the boosted second component voltage.

In some possible implementations of the second aspect, the discharge circuit further includes a boost unit. The boosting unit is connected in series between the input and output ends of the first battery and the power supply end of the electric device. Controlling the first battery and the second battery to jointly discharge to the electric device comprises: the control boosting unit performs boosting processing on the first voltage output by the first battery, and provides the boosted first voltage to the power utilization device. The second voltage output by the second battery to the second battery is controlled to be provided to the electric device.

In some possible implementations of the second aspect, the discharge circuit further includes a switching unit. The switch unit is connected in series between the input and output ends of the first battery and the power end of the electric device. Controlling the first battery to stop discharging and controlling the second battery to charge the first battery while maintaining discharging to the electric device includes: the control switch unit is used for disconnecting the communication between the first battery and the electric device, stopping discharging the first battery to the electric device, and controlling the second battery to discharge to the electric device. When the first battery stops discharging to the electric device, the control switch unit conducts communication between the first battery and the electric device and controls the second battery to charge the first battery.

In some possible implementations of the second aspect, the discharge circuit further includes a first equalization unit and a second equalization unit. The first equalization unit is connected in series between the input and output ends of the first battery and the power end of the electric device. The second equalization unit is connected in series between the output end of the second battery and the power end of the electric device. Controlling the first battery and the second battery to jointly discharge to the electric device comprises: the first equalization unit is controlled to regulate the voltage output by the first battery to the electric device, and the second equalization unit is controlled to regulate the voltage output by the second battery to the electric device. And/or controlling the first equalization unit to regulate the current output by the first battery to the electric device, and controlling the second equalization unit to regulate the voltage output by the second battery to the electric device.

In some possible implementations of the second aspect, controlling the first battery to stop discharging and controlling the second battery to charge the first battery while remaining discharging to the electrical device includes: and controlling the first equalization unit to disconnect the communication between the first battery and the electric device, stopping discharging the first battery to the electric device, and controlling the second battery to discharge the second battery to the electric device through the second equalization unit. When the first battery stops discharging to the electric device, the first equalization unit is controlled to conduct communication between the first battery and the electric device, and the second battery is controlled to charge the first battery.

In a third aspect, an electronic device is provided. The electronic device comprises a circuit board and a discharge circuit as in any of the implementations of the first aspect. The circuit board includes an electrical device. The input and output ends of the first battery and the output end of the second battery in the discharging circuit are respectively coupled with the power end of the electric device so as to discharge to the electric device.

The technical effects of the third aspect may be referred to the technical effects of the first aspect, and will not be described herein.

In a fourth aspect, a computer-readable storage medium is provided. The computer readable storage medium comprises computer instructions which, when run on an electronic device, cause the electronic device to perform the method as implemented in any of the second aspects.

The technical effects of the fourth aspect may be referred to the technical effects of the second aspect, and will not be described herein.

Drawings

FIG. 1 is a graph of voltage and time during discharge of a battery in some embodiments;

FIG. 2 is an equivalent circuit diagram of two battery discharges within an electronic device in some embodiments;

FIG. 3 is a perspective view of an electronic device provided in some embodiments of the present application;

fig. 4 is a perspective view of a supporting device in the electronic apparatus shown in fig. 3;

FIG. 5 is a schematic diagram of one arrangement of two batteries in the electronic device shown in FIG. 3;

FIG. 6 is a schematic diagram illustrating coupling between two batteries and an electrical device of an electronic device according to some embodiments of the present application;

FIG. 7 is a schematic flow diagram of the discharge of the two batteries of FIG. 6 to the consumer;

FIG. 8 is another schematic flow diagram of the discharge of the two batteries of FIG. 6 to the consumer;

FIG. 9 is a schematic diagram illustrating the coupling of two batteries of an electronic device with an electrical device according to other embodiments of the present application;

FIG. 10 is a schematic flow diagram of the discharge of the two batteries of FIG. 9 to the consumer;

FIG. 11 is another schematic flow diagram of the discharge of the two batteries of FIG. 9 to the consumer;

FIG. 12 is a schematic diagram illustrating the coupling of two batteries of an electronic device to an electrical device according to other embodiments of the present application;

FIG. 13 is a schematic flow diagram of the discharge of the two batteries of FIG. 12 to the consumer;

FIG. 14 is another schematic flow diagram of the discharge of the two batteries of FIG. 12 to the consumer;

FIG. 15 is a schematic flow diagram of the discharge of the two batteries of FIG. 12 to an electrical device;

FIG. 16 is a schematic diagram illustrating the coupling of two batteries of an electronic device with an electrical device according to other embodiments of the present application;

FIG. 17 is a schematic diagram illustrating the coupling of two batteries of an electronic device with an electrical device according to other embodiments of the present application;

FIG. 18 is a schematic flow diagram of the discharge of two batteries of FIG. 17 to an electrical device;

FIG. 19 is another schematic flow diagram of the discharge of the two batteries of FIG. 17 to the consumer;

FIG. 20 is a schematic flow diagram of the discharge of two batteries of FIG. 17 to an electrical device;

FIG. 21 is a schematic diagram of one possible configuration of an electronic device involved in some embodiments of the present application;

Fig. 22 is a schematic diagram of one possible configuration of a controller involved in some embodiments of the present application.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments.

The following description of the embodiments of the present application will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments obtained by a person skilled in the art based on the embodiments provided by the present application fall within the scope of protection of the present application.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In describing some embodiments, expressions of "connected," "connected," and derivatives thereof may be used. For example, the term "coupled" may be used in describing some embodiments to indicate that two or more elements are in direct or indirect physical contact with each other. For example, a and B may be connected to each other, or connected to each other by another member. Furthermore, the term "coupled" may be a means of electrical connection for achieving signal transmission.

At least one of "A, B and C" has the same meaning as at least one of "A, B or C," both include the following combinations of A, B and C: a alone, B alone, C alone, a combination of a and B, a combination of a and C, a combination of B and C, and a combination of A, B and C.

"A and/or B" includes the following three combinations: only a, only B, and combinations of a and B.

As used herein, "about," "approximately" or "approximately" includes the stated values as well as average values within an acceptable deviation range of the particular values as determined by one of ordinary skill in the art in view of the measurement in question and the errors associated with the measurement of the particular quantity (i.e., limitations of the measurement system).

Fig. 1 shows a graph of voltage versus time during battery discharge in some embodiments.

When a battery passes a current, the potential deviates from the equilibrium potential, which is called battery polarization. The equilibrium potential is the potential of an electrode in a stationary, relatively idealized state when no current is flowing. The polarization voltage of the battery is the voltage at which the actual electrode potential deviates from the equilibrium electrode potential after the static state is broken due to the flow of current.

When the battery is being charged, the actual potential of the battery will be higher than the equilibrium potential of the battery because of the battery polarization voltage. When the battery is discharging, the actual potential of the battery will be lower than the equilibrium potential of the battery because of the battery polarization voltage.

As shown in fig. 1, the output voltage Vout of the battery decreases during discharging, wherein the portion where the voltage instantaneously decreases is a voltage drop due to the internal resistance R and the current I of the battery, and the portion where the voltage slowly decreases is a voltage drop due to the gradual increase of the polarization voltage Ux of the battery due to the gradual increase of the depth of discharge of the battery.

Fig. 2 illustrates an equivalent circuit diagram of two battery discharges within an electronic device in some embodiments.

As shown in fig. 2, U _OC R0 is the ohmic impedance of the voltage transmission path, ux1 is the cell polarization voltage of one cell and Ux2 is the cell polarization voltage of the other cell, which is the open circuit voltage (open circuit voltage, OCV) of the cell. The greater the depth of discharge of the battery, the greater the corresponding battery polarization voltage of the battery. Output voltage vout=u of battery _OC IR0-Ux1-Ux2, it can be seen that the output voltage of the whole cell is inversely related to the cell polarization voltage of the cell.

It has been previously described that the output voltage Vout of the battery decreases due to the influence of the polarization voltage of the battery, resulting in a decrease in the total output power of the battery. When the electronic device detects that the output voltage Vout of the battery is lower than a preset voltage value (e.g., 3.2V), it considers that the battery is about to run out, and therefore the electronic device automatically shuts down to protect the battery. The output voltage Vout of the whole battery is pulled down by the battery polarization voltages Ux1 and Ux2, so that the output voltage Vout of the battery is lower than a preset voltage value under the condition that the actual electric quantity of the battery is not completely released, and the electric quantity of the battery cannot be completely released, so that the proportion of the actual discharge quantity of the battery to the total capacity of the battery is lower.

In addition, a plurality of batteries are discharged simultaneously, so that the situation that one battery is discharged and the other batteries are not discharged easily occurs, and under the situation, the output voltage of a single battery is difficult to meet the preset voltage value of the electronic equipment, and the automatic relation of the electronic equipment can be caused. In this case, the total output power of the battery is also reduced, so that the actual discharge power of the battery in the electronic device occupies a lower proportion of the total capacity of the battery.

Based on this, embodiments of the present application provide an electronic device and a discharging method to overcome the above technical problems.

The embodiment of the application provides electronic equipment. The electronic device includes at least two batteries. Electronic devices include, but are not limited to, laptop computers, mobile phones, smart phones (e.g., folding screen phones), tablet computers, smart car devices, navigators, motion cameras, smart appliances, artificial intelligence devices, wearable devices, or virtual reality/augmented reality/mixed reality devices, etc. For ease of understanding, the following description will be given by taking a scenario in which the electronic device includes a folding screen mobile phone as an example.

Referring to fig. 3, fig. 3 is a perspective view of an electronic device 100 according to some embodiments of the present application. The electronic device 100 may comprise a flexible screen 10 and a support means 20. It is to be understood that fig. 3 only schematically illustrates some components included in the electronic device 100, and the actual shape, actual size, actual position, and actual configuration of these components are not limited by fig. 3.

The flexible screen 10 can be used to display information and provide an interactive interface for a user. In various embodiments of the present application, the flexible screen 10 may include, but is not limited to, an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini-LED (mini organic light-emitting diode) display screen, a micro-LED (micro organic light-emitting diode) display screen, a micro-organic LED (micro organic light-emitting diode) display screen, a quantum dot (quantum dot light emitting diodes, QLED) display screen, and the like.

The flexible screen 10 is switchable between an extended state and a collapsed state. The flexible screen 10 comprises a first portion 11, a second portion 12 and a third portion 13, the third portion 13 being located between the first portion 11 and the second portion 12. At least a third portion 13 of the flexible screen 10 is made of a flexible material. It will be appreciated that the third portion 13 is a bent portion of the flexible screen 10 and is made of a flexible material; the first portion 11 and the second portion 12 may be made of a flexible material, may be made of a rigid material, and may be made of a flexible material, which is not limited herein.

The support device 20 is used to support the flexible screen 10 and allow the flexible screen 10 to be switched between an unfolded state and a folded state. Referring to fig. 4, fig. 4 is a perspective view of the supporting device 20 in the electronic apparatus 100 shown in fig. 3. In the present embodiment, the supporting device 20 includes a first housing 21, a second housing 22, and a folding assembly 23. It will be appreciated that fig. 4 only schematically illustrates some of the components comprised by the support device 20, the actual shape, actual size, actual position and actual configuration of which are not limited by fig. 4.

The support device 20 has a support surface that can be used to support the flexible screen 10. By the support of the support surface, in the unfolded state, the flexible screen 10 can be made flat, and the display surface of the flexible screen 10 can be made flat.

The first housing 21 is used to secure and support the first portion 11 of the flexible screen 10 of fig. 3. Specifically, the first housing 21 has a support surface M1, and the first housing 21 is fixed by the support surface M1 and supports the first portion 11 of the flexible screen 10 in fig. 3. Exemplary connection of the support surface M1 to the first portion 11 includes, but is not limited to, gluing.

The second housing 22 is used to secure and support the second portion 12 of the flexible screen 10 of fig. 3. Specifically, the second housing 22 has a support surface M2, and the second housing 22 is fixed by the support surface M2 and supports the second portion 12 of the flexible screen 10 in fig. 3. Exemplary connection of the support surface M2 to the second portion 11 includes, but is not limited to, gluing.

The folding assembly 23 is used to support the third portion 13 of the flexible screen 10. Illustratively, a folding assembly 23 is positioned between the first housing 21 and the second housing 22, the folding assembly 23 being coupled to the first housing 21 and the second housing 22, respectively, the first housing 21 and the second housing 22 being rotatably coupled by the folding assembly 23 to effect relative rotation between the first housing 21 and the second housing 22.

The folding assembly 23 is switchable between an unfolded state and a folded state. By switching the folding assembly 23 between the unfolded state and the folded state, the entire electronic device 100 and/or the flexible screen 10 may be allowed to switch between the unfolded state and the folded state.

The first housing 21 and/or the second housing 22 may respectively form an installation space for installing electronic components such as a circuit board (also referred to as a motherboard), a battery, a receiver, a speaker, a camera, and the like of the electronic device 100. The circuit board may integrate electronic components such as a main controller, a storage unit, an antenna module, a power management module, and the like of the electronic device 100, and the first casing 21 and the second casing 22 may be of equal thickness or different thickness. For ease of understanding, the circuit board is subsequently used as an electrical device for the battery.

Fig. 5 shows a schematic diagram of an arrangement according to two batteries in the electronic device shown in fig. 3. As shown in fig. 5, at least two batteries of the electronic device 100 may include a first battery 31 and a second battery 32. The first battery 31 may be located in the installation space of the first housing 21, and the second battery 32 may be located in the second housing 22.

The circuit board 40 may be located in the installation space of the first housing 21. It will be appreciated that the first battery 31 and the circuit board 40 are located at the same time in the first housing 21. The first battery 31, the second battery 32, and the circuit board 40 are coupled to each other to constitute a discharging circuit of the electronic device 100.

The circuit board 40 may include a plurality of electrical devices thereon. For example, the electric device may include a system on a chip (SOC), a memory chip, a charge and discharge management chip, and the like. The circuit board 40 is provided with a power port, the SOC and the memory chip are respectively provided with a power pin, and the circuit board 40 is respectively coupled with the power pins of the SOC and the memory chip through wires, so that after the circuit board 40 obtains voltage from a battery, the voltage is provided for the power pins of the SOC and the memory chip, and working voltages are provided for the SOC and the memory chip.

For ease of understanding, the electrical devices in the electronic device will be represented directly below with the circuit board 40 as a collection of multiple electrical devices. It should be understood that the actual electrical devices are a plurality of functional devices on the circuit board 40.

In some examples, the size of the installation space of the first housing 21 is substantially the same as the size of the installation space of the second housing 22, and the size of the first battery 31 may be smaller than the size of the second battery 32 because the space occupied by the circuit board 40 in the first housing 21 is large. In other words, the capacity of the first battery 31 may be smaller than the capacity of the second battery 32.

Of course, in other examples, the capacity of the first battery 31 may be substantially equal to the capacity of the second battery 32, or the capacity of the first battery 31 may be greater than the capacity of the second battery 32, which is not limited by the present application. For ease of understanding, the following description will be given by taking the case where the capacity of the first battery 31 is smaller than the capacity of the second battery 32.

It should be noted that, in various embodiments of the present application, the circuit board 40 includes two states, i.e., a light-load scene and a heavy-load scene. The circuit board 40 being in the heavy-load scenario means that the circuit board 40 is in a scenario where the requirement for electric quantity is high, for example, the electronic device 100 is running a high-power application such as a game; the circuit board 40 being in a light load scenario refers to the circuit board 40 being in a scenario where the requirement for electric quantity is low, for example, the electronic device 100 is in a low load state such as a standby state. Under the condition that the circuit board 40 is in a heavy-load scene, a single battery is insufficient to meet the requirement of the circuit board 40 on the electric quantity, and a plurality of batteries are required to discharge the circuit board 40 simultaneously according to the requirement; under the condition that the circuit board 40 is in a light-load scene, a single battery can meet the requirement of the circuit board 40 on electric quantity, and only one battery can supply power to the circuit board 40.

It will be appreciated that a single battery discharging the circuit board 40 hereinafter means that the circuit board 40 may be in a light load scenario; hereinafter, two batteries discharge the circuit board 40, which means that the circuit board 40 may be in a light load scene or in a heavy load scene.

FIG. 6 illustrates a schematic coupling of two batteries of an electronic device to an electrical device in some embodiments of the application; FIG. 7 shows a schematic flow diagram of the discharge of the two batteries of FIG. 6 to an electrical consumer; fig. 8 shows another flow diagram of the discharge of the two batteries of fig. 6 to the consumer.

The input/output terminal of the first battery 31 is coupled to the power port of the circuit board 40, and the first battery 31 can directly supply power to the circuit board 40. The output of the second battery 32 is configured to couple to a power port of the circuit board 40, and the second battery 32 is capable of directly powering the circuit board 40.

It will be appreciated that the input and output of the first battery 31 and the output of the second battery 32 are simultaneously coupled to the power port of the circuit board 40, so that the first battery 31 and the second battery 32 simultaneously supply power to the circuit board 40. Furthermore, the input/output terminal of the first battery 31 and the output terminal of the second battery 32 are also coupled through the power port of the circuit board 40, and the second battery 32 is also capable of charging the first battery 31.

Wherein, the first battery 31 is closer to the circuit board 40, and the second battery 32 is farther from the circuit board 40, so that the impedance XR1 between the first battery 31 and the circuit board 40 is smaller than the impedance XR2 between the second battery 32 and the circuit board 40.

As shown in fig. 7, since the impedance XR1 between the first battery 31 and the circuit board 40 is smaller than the impedance XR2 between the second battery 32 and the circuit board 40, the current value of the first current output from the first battery 31 to the circuit board 40 is larger than the current value of the second current output from the second battery 32 to the circuit board 40 when the output voltages of the first battery 31 and the second battery 32 are the same. Illustratively, in a heavy-duty scenario with the circuit board 40, the first battery 31 outputs a current of 2A to power the circuit board 40, and the second battery 32 outputs a current of 1A to power the circuit board 40.

In this way, the two batteries of which the circuit board (e.g., the charge-discharge management chip or SOC in the circuit board) 40 controls the full charge amount are discharged for a while, and the output power amount of the first battery 31 is greater than the output power amount of the second battery 32. Because the depth of discharge Gao Bidi of the first cell 31 and the depth of discharge of the second cell 32 are high, the polarization voltage Ux1 of the discharge of the first cell 31 is also caused to be greater than the polarization voltage Ux2 of the discharge of the second cell 32. Therefore, the output voltage Vout1 of the first battery 31 is gradually smaller than the output voltage Vout2 of the second battery 32.

As shown in fig. 8, when the difference between the output voltage Vout2 of the second battery 32 and the output voltage Vout1 of the first battery 31 is large and the circuit board 40 is in a light load scenario, the circuit board 40 may control the output voltage Vout2 of the second battery 32 to charge the first battery 31 while keeping discharging the circuit board 40. It will be appreciated that in the case shown in fig. 8, the circuit board 40 is fully powered by the second battery 32.

A part of the output voltage Vout2 of the second battery 32 (which may be referred to as a first component voltage) supplies power to the circuit board 40, and another part of the output voltage Vout2 of the second battery 32 (which may be referred to as a second component voltage) charges the first battery 31. By charging the first battery 31, the polarization voltage Ux1 of the discharge of the first battery 31 can be eliminated. Illustratively, when the circuit board 40 changes from the heavy load to the light load, the amount of power required by the circuit board 40 decreases, and a part of the voltage of the output voltage Vout2 of the second battery 32 continues to supply power to the circuit board 40, and another part of the voltage of the output voltage Vout2 of the second battery 32 charges the first battery 31. By charging the first battery 31, the polarization voltage Ux1 of the discharge of the first battery 31 can be eliminated.

It has been explained before that the polarization voltage of both cells will pull down the output voltage of the cells. Therefore, in the case where the polarization voltage Ux1 of the first battery 31 is eliminated, the voltage value of the entire output voltage of the two batteries to the circuit board 40 can be raised. Therefore, the second battery 32 is controlled to charge the first battery 31 by the circuit board 40, and the voltage value of the overall output voltage of the circuit board 40 by the two batteries can be increased, thereby increasing the discharge amount of the circuit board 40 by the two batteries.

The second battery 32 charges the first battery 31 and the second battery 32 discharges the circuit board 40, so that the electric quantity of the first battery 31 increases and the electric quantity of the second battery 32 decreases. After a period of time, the electric quantity of the first battery 31 gradually approaches the electric quantity of the second battery 32.

In the case where the electric quantity of the first battery 31 is equal to the electric quantity of the second battery 32 or the circuit board 40 turns to the heavy-load scenario, the circuit board 40 may control the second battery 32 to stop charging the first battery 31, and the second battery 32 ends charging the first battery 31. The circuit board 40 can control the two batteries to revert to the discharge mode shown in fig. 7, i.e., the first battery 31 discharges to the circuit board 40 and the second battery 32 discharges to the circuit board 40. After the two batteries are discharged for a period of time as shown in fig. 7, the electric quantity of the first battery 31 is again lower than that of the second battery 32, and the circuit board 40 can control the two batteries to return to the discharging mode as shown in fig. 8. The cycle is alternated until the discharge of both cells is completed.

In some examples, the circuit board 40 may control the two batteries to discharge in the discharging manner shown in fig. 7, and in the case where the total remaining capacity of the two batteries is 80% of the total battery capacity, the circuit board 40 may control the two batteries to discharge in the discharging manner shown in fig. 8, and after the second battery finishes charging the first battery, the circuit board 40 may control the two batteries to return to the discharging manner shown in fig. 7 to continue discharging. In the case that the total remaining capacity of the two batteries is 60% of the total battery capacity, the circuit board 40 may control the two batteries to discharge according to the discharging manner shown in fig. 8, and after the second battery finishes charging the first battery, the circuit board 40 controls the two batteries to return to the discharging manner shown in fig. 7 to continue discharging. In the case that the total remaining capacity of the two batteries is 40% of the total battery capacity, the circuit board 40 may control the two batteries to discharge according to the discharging manner shown in fig. 8, and after the second battery finishes charging the first battery, the circuit board 40 controls the two batteries to return to the discharging manner shown in fig. 7 to continue discharging. In the case that the total remaining capacity of the two batteries is 20% of the total battery capacity, the circuit board 40 may control the two batteries to discharge according to the discharging mode shown in fig. 8, and after the second battery finishes charging the first battery, the circuit board 40 controls the two batteries to return to the discharging mode shown in fig. 7 to continue discharging. Until the discharge is complete.

Of course, the total remaining power value of the above-mentioned conversion charging occasion can be flexibly selected, and the embodiment of the present application is merely illustrative and should not be taken as a limitation of the scheme.

In the embodiment of the present application, in the process of discharging the first battery 31 and the second battery 32 to the circuit board 40, the second battery 32 is controlled to charge the first battery 31 at least once, so as to eliminate the polarization voltage of the discharge of the first battery 31, and improve the voltage value of the overall output voltage of the two batteries to the circuit board 40, thereby improving the discharge amount of the two batteries to the circuit board 40. In addition, the second battery 32 charges the first battery 31 each time, so that the electric quantity of the first battery 31 can be close to the electric quantity of the second battery 32, thereby reducing or even preventing the situation that the first battery 31 is exhausted and the second battery 32 still has no electric quantity to be discharged, and improving the discharge quantity of the two batteries to the circuit board 40. Thus, under the condition that the discharge capacity of the two batteries is improved, the proportion of the actual discharge capacity of the two batteries to the total capacity of the batteries can be improved.

FIG. 9 is a schematic diagram showing the coupling of two batteries of an electronic device to an electrical device according to other embodiments of the present application; FIG. 10 shows a schematic flow diagram of the discharge of the two batteries of FIG. 9 to an electrical consumer; fig. 11 shows another flow diagram of the discharge of the two batteries of fig. 9 to the consumer.

Fig. 9 differs from fig. 6 in that the electronic device 100 further includes a boosting unit 50. The booster unit 50 is connected in series between the input/output terminal of the first battery 31 and the power supply terminal of the circuit board 40. Since the output terminal of the second battery 32 is also coupled to the power terminal of the circuit board 40, the boosting unit 50 can also be understood as being connected in series between the input/output terminal of the first battery 31 and the output terminal of the second battery 32.

As shown in fig. 10, since the impedance XR1 between the first battery 31 and the circuit board 40 is smaller than the impedance XR2 between the second battery 32 and the circuit board 40, the current value of the first current output from the first battery 31 to the circuit board 40 is larger than the current value of the second current output from the second battery 32 to the circuit board 40 when the output voltages of the first battery 31 and the second battery 32 are the same. Illustratively, in a heavy-duty scenario with the circuit board 40, the first battery 31 outputs a current of 2A to power the circuit board 40, and the second battery 32 outputs a current of 1A to power the circuit board 40.

In this way, after the two batteries with full charge controlled by the circuit board 40 are discharged for a period of time, the output voltage Vout1 of the first battery 31 is gradually smaller than the output voltage Vout2 of the second battery 32 due to the fact that the output power of the first battery 31 is more and the discharge depth of the first battery 31 is high, which results in an increase of the polarization voltage Ux 1.

As shown in fig. 11, when the difference between the output voltage Vout2 of the second battery 32 and the output voltage Vout1 of the first battery 31 is large and the circuit board 40 is in a light load scene, the circuit board 40 may control the output voltage Vout2 of the second battery 32 to charge the first battery 31 while keeping discharging the circuit board 40. It will be appreciated that in the case shown in fig. 11, the circuit board 40 is fully powered by the second battery 32.

A part of the output voltage Vout2 of the second battery 32 (which may be referred to as a first component voltage) supplies power to the circuit board 40, and another part of the output voltage Vout2 of the second battery 32 (which may be referred to as a second component voltage) charges the first battery 31 through the boosting unit 50. Illustratively, when the circuit board 40 changes from the heavy load to the light load, the amount of power required by the circuit board 40 decreases, and a part of the voltage of the output voltage Vout2 of the second battery 32 continues to supply power to the circuit board 40, and another part of the voltage of the output voltage Vout2 of the second battery 32 charges the first battery 31. By charging the first battery 31, the polarization voltage Ux1 of the discharge of the first battery 31 can be eliminated.

It has been described previously that, in the case where the polarization voltage Ux1 of the discharge of the first battery 31 is eliminated, the voltage value of the entire output voltage of the two batteries to the circuit board 40 can be raised. Therefore, the second battery 32 is controlled to charge the first battery 31 by the circuit board 40, and the voltage value of the overall output voltage of the circuit board 40 by the two batteries can be increased, thereby increasing the discharge amount of the circuit board 40 by the two batteries.

Wherein, the circuit board 40 may control the boosting unit 50 to boost the voltage charged by the second battery 32 to the first battery 31, so that the higher voltage charges the first battery 31, and the speed of eliminating the polarized voltage discharged by the first battery 31 may be increased. So that two batteries can be charged between two reloading scenarios spaced apart by the circuit board 40.

It will be appreciated that as shown in fig. 6, where the second battery 32 charges the first battery 31 for a longer period of time, there may be a heavy load scenario where the second battery 32 has not yet charged the first battery 31 to the full circuit board 40, and the first battery 31 has to continue to discharge the circuit board 40. As shown in fig. 9, the second battery 32 can quickly charge the first battery 31 by using the booster unit 50, and the charging time for the first battery 31 can be shortened. This can greatly reduce or even prevent the situation in which the first battery 31 is not yet fully charged and the circuit board 40 continues to be discharged because of the heavy load scenario of the circuit board 40.

The circuit board 40 controls the second battery 32 to charge the first battery 31 and the second battery 32 to discharge the circuit board 40, so that the electric quantity of the first battery 31 is rapidly increased and the electric quantity of the second battery 32 is decreased. After a period of time, the electric quantity of the first battery 31 gradually approaches the electric quantity of the second battery 32. Since the voltage boosting unit 50 boosts the voltage of the second battery 32 for charging the first battery 31, the higher voltage charges the first battery 31, so as to improve the charging efficiency of the first battery 31, and shorten the time required for the electric quantity of the first battery 31 to approach the electric quantity of the second battery 32.

In the case where the electric quantity of the first battery 31 is equal to the electric quantity of the second battery 32 or the circuit board 40 turns to the heavy-load scenario, the circuit board 40 may control the second battery 32 to stop charging the first battery 31, and the second battery 32 ends charging the first battery 31. The circuit board 40 can control the two batteries to revert to the discharge mode shown in fig. 10, i.e., the first battery 31 discharges to the circuit board 40 and the second battery 32 discharges to the circuit board 40. After the two batteries are discharged for a period of time as shown in fig. 10, the electric quantity of the first battery 31 is again lower than that of the second battery 32, and the circuit board 40 can control the two batteries to return to the discharging mode as shown in fig. 11. The cycle is alternated until the discharge of both cells is completed.

In the embodiment of the present application, when the electric quantity of the first battery 31 is lower than that of the second battery 32, the circuit board 40 may control the second battery 32 to charge the first battery 31 by using the voltage boosting unit 50, so as to quickly eliminate the polarization voltage discharged by the first battery 31, and quickly increase the voltage value of the overall output voltage of the two batteries to the circuit board 40, thereby increasing the discharge quantity of the two batteries to the circuit board 40. Since the voltage boosting unit 50 can rapidly cancel the polarized voltage discharged from the first battery 31, it is possible to facilitate the two batteries to cope with various discharge scenarios of the circuit board 40.

In addition, the second battery 32 charges the first battery 31 each time, so that the electric quantity of the first battery 31 can be close to the electric quantity of the second battery 32, thereby reducing or even preventing the situation that the first battery 31 is exhausted and the second battery 32 still has no electric quantity to be discharged, and improving the discharge quantity of the two batteries to the circuit board 40.

Thus, under the condition that the discharge capacity of the two batteries is improved, the proportion of the actual discharge capacity of the two batteries to the total capacity of the batteries can be improved.

In some embodiments, the procedure in which the first battery 31 and the second battery 32 do not charge the first battery 31 under a one-time full charge discharge experience is shown in table 1, and the procedure in which the first battery 31 and the second battery 32 charge the first battery 31 under a one-time full charge discharge experience is shown in table 2.

TABLE 1

TABLE 2

Taking the total capacity (mAh) of the battery as 5000mAh as an example, 1.0C in the two tables represents 5000mA, 0.7C represents 3500mA, 0.2C represents 1000mA, and 0.025C represents 125mA.0.7C to 3.0V means that the battery is discharged to 3.0V at 3500mA, and similarly, 0.2C to 3.0V means that the battery is discharged to 3.0V at 1000 mA. 1.0C CCCV to 4.48V it is assumed that the battery is charged at 5000mA, and after the battery is charged to 4.48V, the charging is continued at 125mA, and after the charging is completed, the charging is stopped.

In the # discharge phase, the second battery 32 alone discharged the circuit board 40 for 30 seconds, while 100mA in the second battery 32 was used to charge the first battery 31 for 30 seconds. The boosting unit 50 boosts the boosted voltage by 100mA to charge the first battery 31 for 30 seconds, thereby increasing the charging speed of the first battery 31.

By comparing the actual discharge amount to the total battery capacity ratio of the two batteries in the # discharge stage in table 2 with the actual discharge amount to the total battery capacity ratio of the two batteries in the no # discharge stage in table 1, it can be found that: the first battery 31 and the second battery 32 can discharge 0.7% more of the total battery capacity in the case of the # discharge phase than in the case of the no # discharge phase.

In some examples, as shown in fig. 9-11, the boost unit 50 is connected in series between the input/output terminal of the first battery 31 and the power supply port of the circuit board 40. The boost unit 50 may include two modes, in which the input/output terminal of the first battery 31 is directly coupled to the power port of the circuit board 40, and the two modes may be referred to as bypass mode; in the second mode, the input/output terminal of the first battery 31 is coupled to the power port of the circuit board 40 through the voltage boosting unit 50.

In the stage of discharging the first battery shown in fig. 10, when the booster unit 50 is in the first mode, the first battery 31 directly discharges the circuit board 40, and at the same time, the second battery 32 also discharges the circuit board 40. At this time, the voltage of the power port of the circuit board 40 is the sum of the output voltage Vout1 of the first battery 31 and the output voltage Vout2 of the second battery 32.

In the stage of discharging the first battery shown in fig. 10, when the voltage boosting unit 50 is in the second mode, the circuit board 40 may control the voltage boosting unit 50 to boost the voltage discharged from the first battery 31, while the second battery 32 also discharges the circuit board 40. At this time, the voltage of the power supply port of the circuit board 40 is the sum of the voltage Vout1+ obtained by boosting the output voltage Vout1 of the first battery 31 and the output voltage Vout2 of the second battery 32. It can be appreciated that the voltage boosting unit 50 may further perform a voltage boosting process on the voltage discharged by the first battery 31, so that the first battery 31 can meet the voltage requirement required by the circuit board 40 under the condition of outputting a lower voltage, and the discharging effect of the first battery 31 is improved.

In other examples, a boost unit may also be provided between the second battery 32 and the circuit board 40. In the stage of discharging the second battery shown in fig. 10 or 11, in the case where the voltage required by the circuit board 40 is higher than the output voltage Vout2 of the second battery 32, the step-up unit may further perform step-up processing on the voltage discharged by the second battery 32. It can be appreciated that the voltage boosting unit may further perform voltage boosting processing on the voltage discharged by the second battery 32, so that the second battery 32 can meet the voltage requirement required by the circuit board 40 under the condition of outputting a lower voltage, and the discharging effect of the second battery 32 is improved.

FIG. 12 is a schematic diagram showing the coupling of two batteries of an electronic device to an electrical device according to other embodiments of the present application; FIG. 13 shows a schematic flow diagram of the discharge of the two batteries of FIG. 12 to an electrical consumer; FIG. 14 shows another schematic flow diagram of the discharge of the two batteries of FIG. 12 to an electrical consumer; fig. 15 shows a further schematic flow diagram of the discharge of the two batteries of fig. 12 to the consumer.

Fig. 12 is different from fig. 6 in that the electronic device 100 further includes a switching unit 60. The switching unit 60 is connected in series between the input/output terminal of the first battery 31 and the power terminal of the circuit board 40. Since the output terminal of the second battery 32 is also coupled to the power terminal of the circuit board 40, the switching unit 60 can also be understood as being connected in series between the input and output terminals of the first battery 31 and the output terminal of the second battery 32.

As shown in fig. 13, two batteries that the circuit board 40 can control to full charge can discharge the circuit board 40 at the same time.

As shown in fig. 14, after the two batteries are simultaneously discharged to the circuit board 40 for a period of time, the circuit board 40 may control the switching unit 60 to disconnect the coupling between the input/output terminal of the first battery 31 and the power port of the circuit board 40. So that the first battery 31 can no longer discharge the circuit board 40 and the second battery 32 discharges the circuit board 40.

After the first battery 31 stops discharging and the second battery 32 discharges the circuit board 40 for a period of time, the circuit board 40 may control the switching unit 60 to re-conduct the coupling between the input/output terminal of the first battery 31 and the power port of the circuit board 40. At this time, there is a pressure difference between the first battery 31 and the second battery 32, as shown in fig. 15, the circuit board 40 is in a state where the first battery 31 keeps stopping discharging in a light load scene, and the circuit board 40 can control the second battery 32 to charge the first battery 31 while discharging to the circuit board 40. The second battery 32 charges the first battery 31, and can cancel the polarization voltage Ux1 discharged from the first battery 31.

It has been described previously that, in the case where the polarization voltage Ux1 discharged from the first battery 31 is eliminated, the voltage value of the entire output voltage of the two batteries to the circuit board 40 can be raised. Therefore, by charging the first battery 31 with the second battery 32, the voltage value of the entire output voltage of the two batteries to the circuit board 40 can be raised, thereby raising the discharge amount of the two batteries to the circuit board 40.

In the case where the electric quantity of the first battery 31 is equal to the electric quantity of the second battery 32 or the circuit board 40 turns to the heavy-load scenario, the circuit board 40 may control the second battery 32 to stop charging the first battery 31, and the second battery 32 ends charging the first battery 31. The two batteries are returned to the discharge mode shown in fig. 13, i.e., the first battery 31 discharges to the circuit board 40 and the second battery 32 discharges to the circuit board 40. After the two batteries are discharged for a period of time as shown in fig. 13, as shown in fig. 14, the circuit board 40 may control the switching unit 60 to disconnect the first battery 31 from the circuit board 40, so that the second battery 32 discharges the circuit board 40. After the second battery 32 is discharged for a while, as shown in fig. 15, the circuit board 40 may control the second battery 32 to charge the first battery 31 while remaining discharged to the circuit board 40. This is cycled in turn until both cells are discharged.

In the embodiment of the present application, in the process that the two batteries jointly discharge the circuit board 40, the circuit board 40 controls the second battery 32 to charge the first battery 31, so as to eliminate the polarization voltage of the discharge of the first battery 31, and improve the voltage value of the overall output voltage of the two batteries to the circuit board 40, thereby improving the discharge amount of the two batteries to the circuit board 40. In addition, the second battery 32 charges the first battery 31 each time, so that the electric quantity of the first battery 31 can be close to the electric quantity of the second battery 32, thereby reducing or even preventing the situation that the first battery 31 is exhausted and the second battery 32 still has no electric quantity to be discharged, and improving the discharge quantity of the two batteries to the circuit board 40. Thus, under the condition that the discharge capacity of the two batteries is improved, the proportion of the actual discharge capacity of the two batteries to the total capacity of the batteries can be improved.

FIG. 16 is a schematic diagram showing the coupling of two batteries of an electronic device to an electrical device in further embodiments of the present application; FIG. 17 is a schematic diagram showing the coupling of two batteries of an electronic device to an electrical device according to other embodiments of the present application; FIG. 18 shows a schematic flow diagram of the discharge of the two batteries of FIG. 17 to an electrical consumer; FIG. 19 shows another schematic flow diagram of the discharge of the two batteries of FIG. 17 to an electrical device; fig. 20 shows a further schematic flow diagram of the discharge of the two batteries of fig. 17 to the consumer.

Fig. 16 differs from fig. 6 in that the electronic device 100 further comprises a first equalization unit 71. The first equalization unit 71 may be connected in series between the input/output terminal of the first battery 31 and the power port of the circuit board 40.

Illustratively, the circuit board 40 may control the first equalization unit 71 by changing the magnitude of the impedance between the input and output terminals of the first battery 31 and the power port of the circuit board 40, which is equivalent to the first equalization unit 71 having a switching function of turning on the coupling between the input and output terminals of the first battery 31 and the power port of the circuit board 40 and turning off the coupling between the input and output terminals of the first battery 31 and the power port of the circuit board 40. It will be appreciated that the first equalization unit 71 may multiplex the switching units in fig. 12. And fig. 16 may have the same advantageous effects as fig. 12, and will not be described here again.

Fig. 17 differs from fig. 16 in that the electronic device 100 may further comprise a second equalization unit 72. The second equalization unit 72 may be connected in series between the output of the second battery 32 and the power port of the circuit board 40.

The first equalization unit 71 and the second equalization unit 72 are not coupled to each other and are both coupled to the power port of the circuit board 40. The first equalization unit 71 may adjust its impedance based on a first control instruction provided by the SOC on the circuit board 40, so as to adjust the impedance between the first battery 31 and the circuit board 40. In this way, the circuit board 40 can adjust the impedance between the first battery 31 and the circuit board 40 through the first control command, thereby adjusting the current and/or voltage of the discharge of the first battery 31 to the circuit board 40. Similarly, the second equalization unit 72 may adjust its impedance based on a second control instruction provided by the SOC on the circuit board 40, thereby adjusting the impedance between the second battery 32 and the circuit board 40. In this way, the circuit board 40 may adjust the impedance between the second battery 32 and the circuit board 40 through the second control command, thereby adjusting the current and/or voltage at which the second battery 32 discharges to the circuit board 40.

As shown in fig. 18, two batteries that the circuit board 40 can control to full charge can discharge the circuit board 40 at the same time. During the simultaneous discharge of the first battery 31 and the second battery 32 to the circuit board 40, the circuit board 40 may sample the output voltage Vout1 of the first battery 31 and also sample the output voltage Vout2 of the second battery 32. In the case where the circuit board 40 samples that the output voltage Vout1 of the first battery 31 is smaller than the output voltage Vout2 of the second battery 32, the first control command may be output to increase the impedance of the first equalization unit 71 and the second control command may be output to decrease the impedance of the second equalization unit 72, so that the output current of the first battery 31 is smaller than the output current of the second battery 32, so that the electric quantity of the first battery 31 may gradually approach the electric quantity of the second battery 32 after a period of time. Similarly, in the case where the circuit board 40 samples that the output voltage Vout1 of the first battery 31 is greater than the output voltage Vout2 of the second battery 32, the first control instruction may be output to decrease the impedance of the first equalization unit 71 and the second control instruction may be output to increase the impedance of the second equalization unit 72 so that the output current of the first battery 31 is greater than the output current of the second battery 32, so that the electric quantity of the first battery 31 may gradually approach the electric quantity of the second battery 32 after a period of time.

As shown in fig. 19, after the two batteries are simultaneously discharged to the circuit board 40 for a period of time, the circuit board 40 may control the first equalization unit 71 to disconnect the first battery 31 from the circuit board 40. So that the first battery 31 can no longer discharge the circuit board 40 and the second battery 32 discharges the circuit board 40.

After the first battery 31 stops discharging and the second battery 32 discharges the circuit board 40 for a period of time, the circuit board 40 may control the first equalization unit 71 to re-conduct the connection between the first battery 31 and the circuit board 40. At this time, there is a pressure difference between the first battery 31 and the second battery 32, as shown in fig. 20, the circuit board 40 is in a state where the first battery 31 keeps stopping discharging in a light load scene, and the circuit board 40 can control the second battery 32 to charge the first battery 31 while discharging to the circuit board 40. The second battery 32 charges the first battery 31, and can cancel the polarization voltage Ux1 discharged from the first battery 31.

In the case where the electric quantity of the first battery 31 is equal to the electric quantity of the second battery 32 or the circuit board 40 turns to the heavy-load scenario, the circuit board 40 may control the second battery 32 to stop charging the first battery 31, and the second battery 32 ends charging the first battery 31. The two batteries are returned to the discharge mode shown in fig. 18, i.e., the first battery 31 discharges to the circuit board 40 and the second battery 32 discharges to the circuit board 40. After the two batteries are discharged for a period of time as shown in fig. 18, as shown in fig. 19, the circuit board 40 may control the first equalization unit 71 to disconnect the first battery 31 from the circuit board 40, so that the second battery 32 alone discharges the circuit board 40. After the second battery 32 is separately discharged for a period of time, as shown in fig. 20, the circuit board 40 may control the circuit board 40 to charge the first battery 31 while the second battery 32 remains discharged to the circuit board 40 in a light load scenario. This is cycled in turn until both cells are discharged.

In the embodiment of the present application, the second battery 32 can charge the first battery 31, eliminate the polarization voltage of the first battery 31 discharged, and increase the voltage value of the overall output voltage of the two batteries to the circuit board 40, thereby increasing the discharge amount of the two batteries to the circuit board 40. Each time the second battery 32 charges the first battery 31, the electric quantity of the first battery 31 can be close to the electric quantity of the second battery 32, so that the situation that the first battery 31 is exhausted and the second battery 32 still has no electric quantity to be discharged is reduced or even prevented, and the discharge quantity of the two batteries to the circuit board 40 is improved.

In addition, the circuit board 40 can flexibly allocate the discharge current of the first battery 31 and the discharge current of the second battery 32 by controlling the first equalization unit 71 and the second equalization unit 72, and can also make the electric quantity of the first battery 31 and the electric quantity of the second battery 32 close, reduce or even prevent the situation that the first battery 31 is exhausted and the remaining electric quantity of the second battery 32 is not discharged, and promote the discharge quantity of the two batteries to the circuit board 40.

The above description is given of discharging two batteries in one electronic device. In other embodiments, more batteries in one electronic device may be discharged, where the battery with the highest impedance with the electrical device may be used to charge other batteries, and the ratio of the actual discharge amount to the total capacity of the battery may be increased as well. The charging manner may refer to the manner in which the second battery 32 charges the first battery 31 of the two batteries, which is not described herein.

Fig. 21 shows a schematic diagram of one possible configuration of the electronic device involved in the above-described embodiment. The electronic device 2100 shown in fig. 21 includes a controller 201 and a storage module 203.

The controller 201 may be a central processing unit (central processing unit, CPU), a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA), or other programmable logic device, transistor logic device, hardware component, or any combination thereof. The controller may include an application processor and a baseband processor. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. The controller may also be a combination that implements computing functionality, e.g., comprising one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc. The memory module 203 may be a memory, such as a register.

Fig. 22 shows a schematic diagram of one possible configuration of the controller involved in the above embodiment.

Embodiments of the present application also provide a controller (e.g., soC) that may include at least one processor 701 and at least one interface circuit 702, as shown in fig. 22. The processor 701 and the interface circuit 702 may be interconnected by wires. For example, interface circuit 702 may be used to receive signals from other devices (e.g., a memory module of an electronic apparatus). For another example, interface circuit 702 may be used to transmit signals to other devices (e.g., processor 701 or antenna assembly). The interface circuit 702 may, for example, read instructions stored in a memory and send the instructions to the processor 701. The instructions, when executed by the processor 701, may cause the electronic device to perform the various steps of the embodiments described above. Of course, the controller may also include other discrete devices, which are not particularly limited in this embodiment of the application.

Embodiments of the present application also provide a computer readable storage medium, where the computer readable storage medium includes computer instructions, which when executed on an electronic device, cause the electronic device to perform the functions or steps performed by the electronic device in the method embodiments described above.

Embodiments of the present application also provide a computer program product, which when run on a computer causes the computer to perform the functions or steps performed by the electronic device in the method embodiments described above. For example, the computer may be the electronic device described above.

It will be apparent to those skilled in the art from this description that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to perform all or part of the functions described above.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and the parts shown as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions for causing a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.

The foregoing is merely illustrative of specific embodiments of the present application, and the scope of the present application is not limited thereto, but any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A discharge circuit for discharging an electrical device; the discharge circuit includes:

at least two batteries including a first battery and a second battery; the input and output ends of the first battery are used for being coupled with the power end of the power utilization device, the output end of the second battery is used for being coupled with the power end of the power utilization device, and the input and output ends of the first battery and the output end of the second battery are coupled through the power end of the power utilization device, wherein the impedance between the first battery and the power utilization device is smaller than the impedance between the second battery and the power utilization device;

The first battery is configured to discharge the electrical consumer;

the second battery is configured to discharge the electric consumer device and to charge the first battery at least once while maintaining the discharge of the electric consumer device.

2. The discharge circuit of claim 1, wherein the discharge circuit further comprises:

the boosting unit is connected in series between the input and output ends of the first battery and the power supply end of the electric device;

the boosting unit is configured to boost a voltage of the second battery charged to the first battery.

3. The discharge circuit of claim 2, wherein the discharge circuit comprises a discharge circuit,

the boosting unit is further configured to boost a voltage discharged from the first battery to the electric device.

4. The discharge circuit of claim 1, wherein the discharge circuit further comprises:

the switch unit is connected in series between the input and output ends of the first battery and the power supply end of the electric device;

the switching unit is configured to conduct coupling between the input and output ends of the first battery and the power source end of the electric device or disconnect coupling between the input and output ends of the first battery and the power source end of the electric device.

5. The discharge circuit of claim 1, wherein the discharge circuit further comprises:

the first equalization unit is connected in series between the input and output ends of the first battery and the power supply end of the electric device;

the second equalization unit is connected in series between the output end of the second battery and the power end of the electric device;

the first equalization unit is configured to adjust the voltage and/or current of the first battery discharged to the electric device;

the second equalization unit is configured to adjust a voltage and/or a current at which the second battery discharges to the electric device.

6. The discharge circuit of claim 5, wherein the discharge circuit comprises a discharge circuit,

the first equalization unit is further configured to conduct coupling between the input and output terminals of the first battery and the power source terminal of the electric device or disconnect coupling between the input and output terminals of the first battery and the power source terminal of the electric device.

7. The discharge circuit of any one of claims 1-6, wherein a capacity of the first battery is less than a capacity of the second battery.

8. A discharge method, characterized in that the discharge method is applied to a discharge circuit, and the discharge circuit is used for discharging an electric device; the discharge circuit includes: at least two batteries including a first battery and a second battery; the input and output ends of the first battery are used for being coupled with the power end of the power utilization device, the output end of the second battery is used for being coupled with the power end of the power utilization device, and the input and output ends of the first battery and the output end of the second battery are coupled through the power end of the power utilization device, wherein the impedance between the first battery and the power utilization device is smaller than the impedance between the second battery and the power utilization device; the method comprises the following steps:

And in the process of controlling the first battery and the second battery to discharge to the electric device together, controlling the first battery to stop discharging at least once, and controlling the second battery to charge the first battery while keeping discharging to the electric device.

9. The method of claim 8, wherein the discharge circuit further comprises a boost unit connected in series between the input and output terminals of the first battery and the power supply terminal of the electrical device;

the controlling the second battery to charge the first battery while maintaining the discharge to the electric device includes:

controlling the second battery to output a first component voltage to the electric device;

and controlling the boosting unit to boost the second component voltage output by the second battery, and charging the first battery with the boosted second component voltage.

10. The method of claim 9, wherein the controlling the first battery and the second battery to jointly discharge to the electrical consumer comprises:

the boosting unit is controlled to boost the voltage output by the first battery, and the boosted first voltage is provided for the electric device;

And controlling the voltage output by the second battery to be provided for the power utilization device.

11. The method of claim 8, wherein the discharge circuit further comprises a switching unit connected in series between the input and output terminals of the first battery and the power terminal of the electrical device;

the controlling the first battery to stop discharging and controlling the second battery to charge the first battery while maintaining discharging to the electric device includes:

the switching unit is controlled to break the communication between the first battery and the electric device, the first battery stops discharging to the electric device, and the second battery is controlled to discharge to the electric device;

and under the condition that the first battery stops discharging to the electric appliance, controlling the switch unit to conduct communication between the first battery and the electric appliance, and controlling the second battery to charge the first battery.

12. The method of claim 8, wherein the discharge circuit further comprises a first equalization unit and a second equalization unit, the first equalization unit being connected in series between the input and output terminals of the first battery and the power terminal of the electrical device, the second equalization unit being connected in series between the output terminal of the second battery and the power terminal of the electrical device;

The controlling the first battery and the second battery to discharge together to the electric device includes:

controlling the first equalization unit to adjust the voltage output by the first battery to the electric device, and controlling the second equalization unit to adjust the voltage output by the second battery to the electric device; and/or the number of the groups of groups,

and controlling the first equalization unit to regulate the current output by the first battery to the electric appliance, and controlling the second equalization unit to regulate the voltage output by the second battery to the electric appliance.

13. The method of claim 12, wherein controlling the first battery to stop discharging and controlling the second battery to remain discharging to the electrical consumer device while charging the first battery comprises:

the first equalization unit is controlled to disconnect the communication between the first battery and the electric device, the first battery stops discharging to the electric device, and the second battery is controlled to discharge to the electric device through the second equalization unit;

and under the condition that the first battery stops discharging to the electric device, controlling the first equalization unit to conduct communication between the first battery and the electric device, and controlling the second battery to charge the first battery.

14. An electronic device, comprising: a circuit board and a discharge circuit as claimed in any one of claims 1 to 7;

the circuit board comprises an electric device; the input and output ends of the first battery and the output end of the second battery in the discharging circuit are respectively coupled with the power end of the electric device so as to discharge the electric device.

15. A computer readable storage medium comprising computer instructions which, when run on an electronic device, cause the electronic device to perform the method of any of claims 8-13.