CN116667473B

CN116667473B - Control circuit, circuit control method and electronic equipment

Info

Publication number: CN116667473B
Application number: CN202211594740.3A
Authority: CN
Inventors: 汤瑞超
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2024-04-16
Anticipated expiration: 2042-12-13
Also published as: CN116667473A

Abstract

The embodiment of the application provides a control circuit, a circuit control method and electronic equipment. In this method, the control circuit includes two batteries (battery 11 and battery 12), and the battery 11 and battery 12 are connected in series, and the battery 11 is connected to a voltage converter corresponding to a load in a high voltage range through a switch Q0. The battery 11 and the battery 12 are connected in series to supply power for the high voltage domain, and the battery 11 alone supplies power for the low voltage domain. The electronic equipment can work normally, and the efficiency of the voltage converter can be improved while the endurance of the electronic equipment is improved.

Description

Control circuit, circuit control method and electronic equipment

Technical Field

The present disclosure relates to the field of circuits, and in particular, to a control circuit, a circuit control method, and an electronic device.

Background

The battery of the electronic device (including the mobile phone or the tablet device) can supply power to the system, so that the electronic device can work normally. At this stage, a battery may be included in the electronic device. But the endurance of a single battery is limited, in order to improve the endurance of a terminal, other batteries can be reconfigured for the electronic equipment, and a plurality of batteries are used for supplying power to the system so as to improve the endurance of the electronic equipment. It should be understood here that a battery may be understood as a battery pack, in which at least one electrical cell (also understood as a battery) may be included. The other batteries that are reconfigured are collectively referred to as reconfiguring a battery, which may also be understood as a battery pack, which may also include at least one cell (which may also be understood as a battery).

How to reasonably use a plurality of batteries so that the terminal can operate normally is worth discussing.

Disclosure of Invention

The application provides a control circuit, a circuit control method and electronic equipment, which enable the electronic equipment to work normally, and improve the endurance capacity of the electronic equipment and the efficiency of a voltage converter.

In a first aspect, the present application provides a control circuit, including a first battery, a second battery, and a first switch, wherein: the first end of the first battery is connected with the first end of the second battery; the second end of the first battery is connected with the first voltage converter; the first voltage converter is connected with a high-voltage load; the second end of the first battery is also connected with the first end of the first switch; the first end of the first switch is also connected with the first voltage converter; the first end of the second battery is connected with the second voltage converter; the second voltage converter is connected with a low-voltage load; a first end of the first switch is connected with a second end of the first battery and the first voltage converter, and a second end of the first switch is connected with a first end of the second battery; and then the second battery is connected with the first voltage converter through the first switch; in the case that the capacities of the first battery and the second battery are not exhausted, the first switch is in an off state, the first battery and the second battery are connected in series to supply power to the high-voltage load through the first voltage converter, and the second battery supplies power to the low-voltage load through the second voltage converter.

In the above-described embodiment, the first battery may be the battery 12 or the small-capacity battery referred to in the embodiment, and the second battery may be the battery 11 or the large-capacity battery referred to in the embodiment; the first switch may be the switch Q0 referred to in the embodiment, the first voltage converter may be the voltage converter 1 referred to in the embodiment, and the second voltage converter may be the voltage converter 2 referred to in the embodiment.

In this way, for a high voltage load, which is still kept powered by two batteries in series, the conversion efficiency of the voltage converter corresponding to the high voltage load remains unchanged. For an operating voltage less thanThe low-voltage load of (2) is powered by the battery 11 alone, the voltage corresponding to the current received by the voltage converter corresponding to the low-voltage load is the voltage (V11) of the battery 11, and is not the voltage (V11 + V12) after the two batteries are connected in series, and the voltage difference before and after the voltage converter corresponding to any low-voltage load is converted is at least reduced>The conversion efficiency of the voltage converter corresponding to the low-voltage load can be improved.

With reference to the first aspect, in some embodiments, in a case where the first battery and the second battery are both full, a capacity of the first battery is smaller than a capacity of the second battery.

With reference to the first aspect, in some embodiments, the high-voltage load is a load with an operating voltage greater than a first threshold; the low voltage load may be a load having an operating voltage less than or equal to the first threshold; the first threshold is greater than or equal to a sum of a voltage corresponding to the first battery when full power and a voltage corresponding to the second battery when full power.

In the above embodiment, the first threshold may be a preset threshold 1 referred to in the embodiment. The preset threshold 1 may be greater than or equal to v11+v12. V11 may be a voltage corresponding to the full charge of the second battery (may also be referred to as a full charge voltage), and V12 is a full charge voltage of the first battery. At this time, the voltage converter connected to the high-voltage load is used for boosting, and the voltage converter connected to the low-voltage load is used for reducing.

With reference to the first aspect, in some embodiments, the control circuit further includes: in the case where the capacity of the first battery is depleted and the capacity of the second battery is not depleted, the first switch is in an on state, the second battery supplies power to the high voltage load through the first voltage converter, and the second battery supplies power to the low voltage domain load through the second voltage converter.

In the above embodiment, when the capacity of the first battery is exhausted, the second battery may be used to supply power to the high-voltage load and the low-voltage load at the same time, so that the electronic device may continue to operate normally.

With reference to the first aspect, in some embodiments, the control circuit further includes:

and when the capacity of the second battery is smaller than a second threshold value and the capacity of the first battery is larger than the second threshold value, the first switch is in an off state, and the first battery charges the second battery.

In the above embodiment, the second threshold may be the preset capacity 1 referred to in the embodiment. In this way, in the case where the capacity of the second battery is exhausted, the second battery can be charged using the first battery. After the charging is completed, the second battery can be used for supplying power to the high-voltage load in series with the first battery, and the second battery is used for supplying power to the low-voltage domain, so that the capacities of the two batteries can be fully released.

With reference to the first aspect, in some embodiments, the control circuit further includes a second switch, a third switch, a first path management chip, a second path management core, and a charging port, where: the first end of the second switch is connected with the first path management chip, and the second end of the second switch is connected with the first battery; the first end of the third switch is connected with the second path management chip, and the second end of the third switch is connected with the second battery; the first path management chip and the second path management chip are connected with the charging port; transmitting electric quantity to the first path management chip and the second path management chip through the charging port; under the condition that the first battery is charged before the second battery is charged, the second switch and the third switch are conducted, and the first battery and the second battery are charged in series based on the first path management core; and charging the second battery based on the second path management core; after the first battery is charged, the second switch is turned off, and the second battery is continuously charged based on the second path management core.

In the above embodiment, the second switch may be the switch B1 referred to in the embodiment, the third switch may be the switch B2 referred to in the embodiment, the first path management chip may be the path management chip 1 referred to in the embodiment, and the second path management chip may be the path management chip 2 referred to in the embodiment. The above embodiment may allow the first battery to complete charging first.

With reference to the first aspect, in some embodiments, in a case where the first battery charges the second battery, the control circuit further includes: the first battery supplies power to the high-voltage load through the first voltage converter, and the first battery supplies power to the low-voltage domain load based on the second path management chip.

In the above embodiment, when the capacity of the second battery is exhausted and the first battery charges the second battery, the first battery may be used to supply power to the high-voltage load and the low-voltage load at the same time, so that the electronic device may continue to operate normally.

With reference to the first aspect, in some embodiments, the control circuit further includes: under the condition that the first battery and the second battery are charged simultaneously, the second switch is disconnected and the third switch is turned on, and the second battery is charged based on the second path management core; when the capacity of the second battery is determined to be increased by a first capacity, the third switch is turned off and the second switch is turned on, and the first battery and the second battery are charged in series based on the first path management core; the first capacity is a difference between a capacity required to fully charge the second battery and a capacity required to fully charge the first battery.

In the above embodiment, the first battery and the second battery may be allowed to complete charging at the same time.

With reference to the first aspect, in some embodiments, the high voltage load includes a display screen.

In a second aspect, the present application provides a circuit control method, which is applied to an electronic device including a first battery and a second battery, the method including: under the condition that the capacities of the first battery and the second battery are not consumed as much as possible, the electronic equipment supplies power for a high-voltage load based on the series connection of the first battery and the second battery; the electronic device supplies power to a low-voltage load based on the second battery; wherein, under the condition that the first battery and the second battery are full, the capacity of the first battery is smaller than the capacity of the second battery; the high-voltage load is a load with the working voltage being greater than a first threshold value; the low voltage load may be a load having an operating voltage less than or equal to the first threshold; the first threshold is greater than or equal to a sum of a voltage corresponding to the first battery when full power and a voltage corresponding to the second battery when full power.

With reference to the second aspect, in some embodiments, the method further includes: transmitting electric quantity to the first path management chip and the second path management chip through the charging port; under the condition that the first battery is charged before the second battery is charged, a second switch and a third switch are conducted, and the first battery and the second battery are charged in series based on the first path management core; and charging the second battery based on the second path management core; the first end of the second switch is connected with the first path management chip, and the second end of the second switch is connected with the first battery; the first end of the third switch is connected with the second path management chip, and the second end of the third switch is connected with the second battery; the first path management chip and the second path management chip are connected with the charging port; after the first battery is charged, the second switch is turned off, and the second battery is continuously charged based on the second path management core.

With reference to the second aspect, in some embodiments, the method further includes: under the condition that the first battery and the second battery are charged simultaneously, the second switch is disconnected and the third switch is turned on, and the second battery is charged based on the second path management core; when the capacity of the second battery is determined to be increased by a first capacity, the third switch is turned off and the second switch is turned on, and the first battery and the second battery are charged in series based on the first path management core; the first capacity is a difference between a capacity required to fully charge the second battery and a capacity required to fully charge the first battery.

In a third aspect, the present application provides an electronic device comprising a control circuit as described in any one of the first aspects.

In a fourth aspect, the present application provides an electronic device comprising a control circuit and a processor for performing a circuit control method as described in any of the second aspects, based on the control circuit.

Drawings

FIG. 1 shows a schematic diagram of two battery operations in one scenario;

FIG. 2 is a schematic diagram showing the operation of two batteries in the circuit control method according to the present application;

FIG. 3 shows an example of a control circuit when power is supplied;

FIG. 4 shows an example of a control circuit during charging;

fig. 5 shows another example of the control circuit at the time of charging;

fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The terminology used in the following embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates to the contrary. It should also be understood that the term "and/or" as used in this application refers to and encompasses any or all possible combinations of one or more of the listed items.

The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying 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, and in the description of embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In one embodiment of the present application, the electronic device may use two batteries (battery packs) in series to further power the system. The use of two batteries to power the system may enhance the cruising ability of the electronic device.

The system of electronic devices comprises a plurality of loads (devices), such as processors, etc., the voltages involved in the operation of the different loads may be different. Different loads can be connected with the same or different voltage converters, and the electronic equipment can convert the voltage output after the two batteries are connected in series through the voltage converters to obtain voltages corresponding to the different loads, and the voltages corresponding to the different loads are used for transmitting electric energy for the loads, so that the electronic equipment is in a normal working state.

Fig. 1 shows a schematic diagram of the operation of two batteries in one embodiment.

As shown in fig. 1, the dotted line ends represent the current flow. Two batteries (battery 11 and battery 12) are connected in series to supply power for the system, and the current provided by the two batteries is shunted to different voltage converters through a circuit where the point W1 is located. The voltage at the point W1 is the sum of the voltages of the two batteries. Among the different voltage converters are voltage converter 1, voltage converter 2 and other voltage converters. The voltage converter may be connected to at least one high-voltage load, for example to the high-voltage load 1. The voltage converter 2 may be connected to at least one low-voltage load, for example to the low-voltage load 1 and the low-voltage load 2. The other voltage converter may be connected to other loads.

The high-voltage load may be a device whose operating voltage is greater than a preset threshold 1. The low voltage load may be a device having an operating voltage less than or equal to the preset threshold 1.

In some possible cases, the preset threshold 1 may be greater than or equal to v11+v12. V11 may be a voltage corresponding to the full charge of the battery 11 (may also be referred to as a full charge voltage), and V12 is a full charge voltage of the battery 12. At this time, the voltage converter connected to the high-voltage load is used for boosting, and the voltage converter connected to the low-voltage load is used for reducing.

In other possible cases, the preset threshold 1 may also be

In other possible cases, the preset threshold 1 may also be other values, which are not limited in the embodiment of the present application.

It should be understood here that the efficiency of the voltage converter is affected by the voltage difference before and after conversion, and the greater the voltage difference before and after conversion, the lower the conversion efficiency. The smaller the voltage difference before and after conversion, the higher the conversion efficiency.

However, after two batteries are connected in series, the voltage output by the two batteries in series becomes larger than that of a single battery, and for a part of low-voltage load, for example, the operating voltage is smaller than that of a single batteryThe low-voltage load of (2) is obtained by reducing the voltage of the two batteries connected in series by a voltage converter connected with the low-voltage load. When the voltage converter performs voltage conversion, the larger the voltage difference before and after conversion is, the lower the conversion efficiency is. Thus, after connecting two batteries in series, the battery is formed as a unit as compared with a single battery (battery 11 For low voltage loads, the conversion efficiency of the voltage converter is rather reduced.

Compared with the scheme, the circuit control method comprises the steps of using two batteries to supply power (discharge electric quantity), so that the electronic equipment works normally, and the efficiency of the voltage converter can be improved while the endurance of the electronic equipment is improved.

Fig. 2 shows a schematic diagram of the operation of two batteries in the circuit control method according to the present application.

In the control circuit shown in fig. 2, the battery 11 and the battery 12 are connected in series, and the battery 11 is connected to the corresponding voltage converter by the load in the high voltage range through the switch Q0. The battery 11 and the battery 12 are connected in series to supply power for the high voltage domain, and the battery 11 alone supplies power for the low voltage domain. Wherein the high voltage domain includes all high voltage loads and the low voltage domain includes all low voltage loads. Regarding the voltages of the battery 11 and the battery 12 and the relation between the operating voltages of the high voltage load and the low voltage load and the voltages of the two batteries, reference is made to the foregoing, and no further description is given here.

One way of implementing the battery 11 alone to power a low voltage load includes: the battery 12 is connected to the switch Q0, and the battery 12 is connected to the voltage converter corresponding to each low-voltage load, and the switch Q0 is turned off so that the electric quantity of the battery 12 cannot be supplied to the voltage converter corresponding to each low-voltage load, and the battery 12 cannot supply power to each low-voltage load.

In some possible implementations, the switch Q0 may be a transistor, for example, a PMOS transistor, where the switch Q0 is a PMOS transistor, and in the control circuit, the battery 12 is connected to the source (S pole) of the switch Q0, and the battery 11 is connected to the drain (D pole) of the switch Q0. At this time, the modes of controlling the switch Q0 to be turned off include: the controller may pull up the voltage of the gate (G-pole) such that the gate-source voltage of the switch Q0 is greater than the on-voltage 1, and thus the switch Q0 may be in an off-state.

It should be understood here that the theoretical basis for controlling the opening of the switch Q0 in this case includes: the PMOS on condition is that the gate-source voltage of the switch Q0 is less than the on voltage 1. The switch Q0 is turned off if the gate-source voltage of the switch Q0 is greater than the on-voltage 1. The gate-source voltage is the difference between the voltage of the gate and the voltage of the source.

In other possible cases, the switch Q0 may be another type of switch (switch tube) for controlling the current of the battery 12 not to be input to the low-voltage load, which is not limited in the embodiment of the present application. For example, the switch Q0 may be an NMOS transistor, and when the switch Q0 is an NMOS transistor, the battery 12 is connected to the drain (D-pole) of the switch Q0 in the control circuit, and the voltage converter corresponding to each low-voltage load is connected to the source (S-pole) of the switch Q0. At this time, the modes of controlling the switch Q0 to be turned off include: the controller may pull down the voltage of the gate (G-pole) such that the gate-source voltage of the switch Q0 is less than the on-voltage 2, and thus the switch Q0 may be in an off-state.

It should be understood here that the theoretical basis for controlling the opening of the switch Q0 in this case includes: the NMOS on condition is that the gate-source voltage of the switch Q0 is greater than the on voltage 2. The switch Q0 is turned off if the gate-source voltage of the switch Q0 is less than the on-voltage 2. The gate-source voltage is the difference between the voltage of the gate and the voltage of the source.

In some possible embodiments, the overall power consumption is low, since the high voltage domain in the electronic device includes less high voltage load. Compared with a high-voltage domain, the low-voltage domain comprises more low-voltage loads, and the overall power consumption is high. A small-capacity battery may be used as the battery 12 and a large-capacity battery may be used as the battery 11. At this time, the load in the high voltage domain may be regarded as a high voltage low power consumption load, and the load in the low voltage domain may be regarded as a low voltage high power consumption load.

Here, a small capacity means that the capacity of the battery 12 (at full power) is smaller than the capacity of the battery 11 (at full power). The large capacity means that the capacity of the battery 11 (at full power) is larger than the capacity of the battery 12 (at full power).

It should be understood herein that the capacity of a battery is the amount of power in the battery, and the unit may be expressed in milliwatts (mWh). The capacity of a battery is generally proportional to the volume of the battery: the smaller the volume of the battery, the smaller the capacity of the battery, and the larger the volume of the battery, the larger the capacity of the battery. The small-capacity battery is used to supply power to the load of the high-voltage domain in series with the large-capacity battery, so that the capacity of the small-capacity battery is input to the load of the high-voltage domain under the condition that the voltage is v11+v12. And, the high-capacity battery is used to supply power to the load of the low-voltage domain alone, so that the capacity of the high-capacity battery is input to the load of the low-voltage domain with the voltage V11. In this way, when the electronic device uses the load of the high voltage domain and the load of the low voltage domain, the capacity in the battery 11 can be released to the load of the high voltage domain to the maximum extent when the battery 12 is connected in series, and meanwhile, the capacity of the battery 12 can be released to the load of the low voltage domain to the maximum extent. The most ideal state is that the capacity of the large-capacity battery is exhausted in the same time as that of the small-capacity battery, so that the conversion efficiency of the voltage converter can be always kept. If the capacity of the small-capacity battery is exhausted first, the large-capacity battery is used to supply the load in the high-voltage domain and the load in the low-voltage domain simultaneously, and at this time, the conversion efficiency of the voltage converter corresponding to the load in the high-voltage domain is lower than the case of using two batteries connected in series to supply the load in the high-voltage domain. If the capacity of the large-capacity battery is depleted earlier than the small-capacity battery (i.e., the capacity of the large-capacity battery is smaller than the preset capacity 1), but the capacity of the small-capacity battery is larger than the preset capacity 2, the small-capacity battery can be used for charging the large-capacity battery, so that the large-capacity battery can continue to supply power to the load in the low-voltage domain. In this way, the capacity of both the large-capacity battery and the small-capacity battery can be exhausted.

It should be understood that in some possible cases, reference herein to capacity exhaustion does not refer to a battery capacity exhaustion of 0, but rather to a battery capacity exhaustion to an extent that it is not possible to support normal operation of the electronic device or shutdown of the electronic device. For example, the capacity exhaustion of the small-capacity battery includes the capacity of the small-capacity battery being less than or equal to the preset capacitance 1. The preset capacitor 1 may be a corresponding capacitor when the voltage of the small-capacity battery is reduced to the voltage 1. This voltage 1 is the minimum voltage involved in making all loads in the high voltage domain operate normally. The capacity exhaustion of the large-capacity battery includes that the capacity of the large-capacity battery is less than or equal to a preset capacity 2, where the preset capacity 2 is a corresponding capacity when the voltage of the large-capacity battery is reduced to the voltage 2. This voltage 2 is the minimum voltage involved in making all loads in the low voltage domain operate normally. Here, the preset capacity 2 is greater than the preset capacity 1, and the preset capacity 1 may be set to 5% -10%, for example, 5% of the corresponding capacity of the full-capacity battery, and may be set to other values. The embodiments of the present application are not limited in this regard. The inclusion of capacity (having capacity) in the large-capacity battery and the small-capacity battery refers to a state in which the capacity of the battery is not exhausted.

Fig. 3 shows an example of the control circuit when power is supplied.

The process of supplying power to the system from two batteries in the circuit control method according to the present application will be described in detail with reference to fig. 3.

The control circuit comprises at least two batteries, wherein at least one battery is connected with all other batteries in series to supply power for loads in a high-voltage domain, and at least one battery supplies power for loads in a low-voltage domain. Here, two batteries are included in the control circuit for illustration. For example, reference may be made to the foregoing description of the battery 11 and the battery 12 for the description of the two batteries.

As shown in fig. 3, a first end (e.g., an end at which a negative electrode is located) of the small-capacity battery is connected to a first end (e.g., an end at which a positive electrode is located) of the large-capacity battery, and a second end (e.g., an end at which a positive electrode is located) of the small-capacity battery is connected to a first voltage converter (e.g., voltage converter 1); the first voltage converter is connected with a high-voltage load; the second end of the small-capacity battery is also connected with the first end (such as the end where the S pole is positioned) of the switch Q0; the first end of the switch Q0 is also connected with the first voltage converter; the first end of the high-capacity battery is connected with the second end (for example, the end where the D pole is positioned) of the switch Q0, and is further connected with the first voltage converter through the switch Q0; the first end of the high-capacity battery is also connected with the second voltage converter; the second voltage converter is connected to a low voltage load.

It should be understood that the control circuit shown in fig. 3 is an exemplary illustration. More or fewer components may be included in the actual use, and at least one or more components may be combined to achieve the same functionality. Each component may also be replaced with other components having the same or more functions, which are not limited by the embodiments of the present application.

The control circuit is exemplified herein as including a small-capacity battery and a large-capacity battery.

As shown in fig. 3, the scenarios when the control circuit is powering the system include, but are not limited to, the following scenarios.

Scene 11: in the case where both the large-capacity battery and the small-capacity battery have capacities, the control switch Q0 is turned off such that the source (S pole) to drain (D pole) of the switch Q0 are in an off state. In this scenario, line 1 (line (1) is identified in fig. 3) is the line involved in supplying power to a load in the high voltage domain from a large-capacity battery and a small-capacity battery connected in series. Line 2 (line (2) is identified in fig. 3) is the line involved in the large capacity battery alone supplying power to the load in the low voltage domain. At this time, the electric quantity in the small-capacity battery may be transferred to the voltage converter corresponding to the high-voltage load when the voltage is Vsys1, and the electric quantity transferred by the small-capacity battery may be supplied to the high-voltage load after the voltage Vsys1 is converted by the voltage converter corresponding to the high-voltage load. The electric quantity of the large-capacity battery can be transmitted to a voltage converter corresponding to the low-voltage load when the voltage is Vsys2, and the electric quantity transmitted by the large-capacity battery is provided to the low-voltage load after the voltage Vsys2 is converted by the voltage converter corresponding to the low-voltage load. Wherein Vsys1 is the voltage provided by the series connection of the large-capacity battery and the small-capacity battery, and Vsys2 is the voltage provided by the large-capacity battery. Here, the voltage of the small-capacity battery is V12, the voltage of the large-capacity battery is V11, the voltage provided after the large-capacity battery and the small-capacity battery are connected in series may be v11+v12, ignoring the loss of the voltage on the line. The voltage provided by the high capacity battery is V11. The loss of voltage on the line includes the voltage consumed by the devices, such as switches, sampling resistors, etc.

Scene 12: in the case where the capacity of the small-capacity battery is exhausted, but the large-capacity battery has capacity, the switch Q0 is controlled to be turned on or off so that the drain (D pole) to source (S pole) in the switch Q0 is in an on state. In this way, the high-capacity battery can continue to supply power to the load in the low-voltage domain, and can also supply power to the load in the high-voltage domain through the switch Q0. The line involved in supplying power to the load in the high-voltage domain by the large-capacity battery is line 3 (line (3) is identified in the figure). In this scenario, line 1 is no longer conducting because of the capacity depletion of the small capacity battery. For the description of the switch Q0, reference may be made to the foregoing description of the switch Q0, which is not repeated herein.

It should be appreciated here that one reason that scene 11 as well as scene 12 may be implemented is that: when the small-capacity battery supplies power to the load in the high-voltage domain, the voltage at the point U13 is the sum of the voltages output when the small-capacity battery and the large-capacity battery are connected in series, the voltage at the point U23 is the output voltage of the large-capacity battery, the voltage at the point U13 is larger than the voltage at the point U23, and the capacity of the large-capacity battery cannot supply power to the load in the high-voltage domain. When the capacity of the small-capacity battery is exhausted, if the drain (D pole) to the source (S pole) of the switch Q0 is turned on, the voltage at the point U13 is the voltage provided by the large-capacity battery, and the voltage at the point U13 is less than or equal to the voltage at the point U23, the capacity of the large-capacity battery can supply power to the load in the high-voltage domain. If the loss of voltage on the line, for example through switch Q0, is ignored, the voltage at point U13 is equal to the voltage at point U23.

Scene 13: if the capacity of the large-capacity battery tends to be depleted earlier than the small-capacity battery (i.e., the capacity of the large-capacity battery is smaller than the preset capacity 1), but the capacity of the small-capacity battery is larger than the preset capacity 2, the control switch Q0 is turned off so that the source (S pole) to the drain (D pole) are in an off state. In this scenario, the small-capacity battery may be used to charge the large-capacity battery, so that the large-capacity battery may continue to supply power to the load in the low-voltage domain, and so that the large-capacity battery may continue to be connected in series with the small-capacity battery to supply power to the load in the high-voltage domain.

In scenario 13, the process when the small-capacity battery charges the large-capacity battery may be described with reference to the following: the small-capacity battery outputs electric quantity (current) through the line 1, a part of the electric quantity reaches a point T11 and then is transmitted to the path management chip 1 (such as the path management chip 102 a) connected with the small-capacity battery, then flows out from the path management chip 1 and is transmitted to the path management chip 2 (such as the path management chip 102 b) connected with the large-capacity battery through a point T12, and then the part of the electric quantity is transmitted from the path management chip 2 to the large-capacity battery to charge the large-capacity battery. The functions of the path management chip 1 and the path management chip 2 include adjusting the corresponding voltage when the electric quantity is transmitted, so that the electric quantity can be transmitted to the large-capacity battery. And may further include preventing an excessive voltage corresponding to the amount of electricity input to the large-capacity battery from damaging the large-capacity battery. The following description may be referred to for the relevant description of the path management chip 1 and the path management chip 2, which is not repeated here. In some possible cases, when the small-capacity battery charges the large-capacity battery, the power may also be supplied to the load in the low-voltage domain based on the path management chip 2. The high capacity battery may not power the load in the low voltage domain at this time. After the small-capacity battery completes charging the large-capacity battery, the large-capacity battery may continue to supply power to the load in the low-voltage domain.

In some possible cases, in scenario 13, the conditions for the small-capacity electricity to complete to charge the large-capacity battery may be: the capacity of the small-capacity battery is equal to that of the large-capacity battery.

In the foregoing scenario, the control switch A1 is turned on, so that the line 1 may be in a conductive state. In case of the line 1 being conductive, the large capacity battery and the small capacity battery may be connected in series to supply the load of the high voltage domain. The control switch A2 is turned on to bring the line 2 into a conductive state. With line 2 on, the high capacity battery may supply the load in the low voltage domain.

The content of controlling the switch A1 to be turned on and off includes:

the small-capacity battery may include a fuel gauge chip 1 (e.g., a fuel gauge chip 101 a), and the fuel gauge chip 1 may further include a control pin corresponding to the switch A1, so that the switch A1 can be controlled to be turned off and on based on the control pin. In some possible cases, the switch A1 may comprise two transistors connected in series. The control pins of the corresponding switch A1 may include a C pin and a D pin, where the C pin may control the switching off and switching on of one transistor in the switch A1, and the D pin may control the switching off and switching on of another transistor in the switch A1. With the switch A1 turned on, the capacity in the small-capacity battery can be released. In the case where the switch A1 is turned off, the capacity in the small-capacity battery cannot be released. In some possible cases, the switch A1 may include two NMOS transistors, where the drains (D-poles) or sources (S-poles) of the two NMOS transistors are connected, for example, two NMOS transistors are shown in the figure, where the gates (G-poles) of the two NMOS transistors are connected to the C pin and the D pin, respectively. It should be understood that the switch A1 may also be composed of other devices, such as two PMOS transistors, etc. The embodiments of the present application are not limited in this regard.

In the case that the switch A1 includes two NMOS transistors (as shown in the figure), the voltage output by the C pin and the D pin can be controlled by inputting different control signals bat 1 to the control pin (PRES pin) to realize the turn-off and turn-on of the control switch A1. For example, in the case where the switch A1 includes two NMOS transistors, the control signal bat 1 input to the control pin (PRES pin) is at a high level, so that the voltages output from the C pin and the D pin are at a high voltage, and the two NMOS transistors are in a conductive state, and the switch A1 is conductive. The control signal bat 1 input to the control pin (PRES pin) is at a low level so that the voltages output from the C pin and the D pin are at a low voltage, and the two NMOS transistors are in an off state, and the switch A1 is turned off. The description of the control signal BATC1 controlling the opening and closing of the switch A1 is exemplary and should not be construed as limiting the embodiments of the present application.

In some possible cases, in the foregoing scenario 12, when the capacity of the small-capacity battery is exhausted, the switch A1 may be controlled to be turned off, preventing the capacity of the large-capacity battery from being input to the small-capacity battery through the switch A1.

In some possible cases, the load of the high voltage domain may include the voltage converter 1 and the high voltage load 1, and may further include other high voltage loads and other voltage converters corresponding to the other high voltage loads. The load of the low voltage domain may comprise a voltage converter 2 and a low voltage load 1, and may further comprise other low voltage loads and other voltage converters corresponding to the other low voltage loads.

Fig. 4 shows an example of the control circuit at the time of charging.

The control circuit may further include a path management chip 1 (e.g., path management chip 102 a) connected to the small-capacity battery and a path management chip 2 (e.g., path management chip 102 b) connected to the large-capacity battery. The small-capacity battery is connected to the path management chip 1 via the switch B1. The large-capacity battery is connected to the path management chip 2 via a switch B2. The path management chip 1 is used for managing power supply of a small-capacity battery to a high-voltage domain and also used for managing a charging process of the small-capacity battery. The path management chip 2 is used for managing the power supply of the high-capacity battery to the load in the low-voltage domain or the load in the high-voltage domain, and also is used for managing the charging process of the high-capacity battery.

As shown in fig. 4, a first end (e.g., an end where a G pole is located) of the switch B1 is connected to the first path management chip (e.g., the path management chip 1), and a second end (e.g., an end where a D pole is located) of the switch B1 is connected to the first battery; a first end (e.g., an end where a G pole is located) of the switch B2 is connected to the second path management chip (e.g., the path management chip 2), and a second end (e.g., an end where a D pole is located) of the switch B2 is connected to the second battery; the first path management chip and the second path management chip are connected with the charging port (VBUS 1 or VBUS 2); and transmitting electric quantity to the first path management chip and the second path management chip through the charging port.

When charging the small-capacity battery, the switch B1 is in an on state. In the case where the switch B1 is in the off state, the small-capacity battery cannot be charged. When the large-capacity battery is charged, the switch B2 is in an on state. When the switch B2 is in the off state, the large-capacity battery cannot be charged.

In some possible cases, the principle that the battery cannot be charged with the switch B1 or B2 in the off state includes: the switch B1 and the switch B2 may be a transistor, for example, a PMOS transistor or an NMOS transistor, which is not limited in the embodiment of the present application. For example, when the switch B1 is a PMOS transistor, the Y1 end (e.g., the end where the drain (D-pole) is located) of the switch B1 is connected to the small-capacity battery, the Y2 end (e.g., the end where the source (S-pole) is located) is connected to the load in the high-voltage domain, and the Y3 end (e.g., the end where the gate (G-pole) is located) is connected to the path management chip 1. At this time, when the switch B1 is turned off, the S pole to D pole of the switch B1 is not turned on, and the battery cannot be charged if the current cannot flow. The connection relation of the switch B2 may be referred to the description of the switch B1 in conjunction with fig. 4, and will not be repeated here.

Generally, at least one charging port, for example two, may be included in the electronic device. As shown in fig. 4, two charging ports may be included here, including for example charging port VBUS1 and charging port VBUS2.

In some possible cases, the connection between the charging port VBUS1 and the path management chip 1 may be based on an overvoltage protection chip 1 (OVP chip 103 a), where the overvoltage protection chip 1 is used to protect the path management chip 1, for example, to stop inputting the charging current into the path management chip 1 when the voltage corresponding to the charging current is too large. The connection between the charging port VBUS2 and the path management chip 2 may be based on an overvoltage protection chip 2 (OVP chip 103 b), and the overvoltage protection chip 2 is used to protect the path management chip 2, for example, when the voltage corresponding to the charging current is too high, the charging current is stopped from being input into the path management chip 2.

It should be understood here that the same scenario is involved when the power supply circuit is charged when the charging voltage is supplied from different charging ports. The scenarios involved in charging the power supply circuit include, but are not limited to, the following:

scene 21: so that the small-capacity battery is charged first. In this case, the on-switch B1 and the on-switch B2 are used to charge the small-capacity battery and the large-capacity battery in series based on the path management chip 1, and the large-capacity battery is charged based on the path management chip 2. After the small-capacity battery is charged, the switch B1 is turned off so that the path management chip 1 stops charging the small-capacity battery as well as the large-capacity battery. The path management chip 2 continues to charge the large-capacity battery.

Scene 22: and charging the large-capacity battery first, so that the small-capacity battery and the large-capacity battery are charged simultaneously. In this scenario, the switch B1 is turned off, the switch B2 is turned on, the large-capacity battery is charged based on the path management chip 2, and when it is determined that the large-capacity battery is charged to meet the preset condition 1, the switch B2 is turned off and the switch B1 is turned on, so that the path management chip 1 charges the small-capacity battery and the large-capacity battery in series, and the path management chip 2 stops charging the large-capacity battery. The preset condition 1 includes that the capacity in the large-capacity battery is increased by a capacity H1 through charging, and the electric quantity H1 is a difference between a capacity required when the large-capacity battery is fully charged and a capacity required when the small-capacity battery is fully charged.

It should be understood herein that such that the charging of the small-capacity battery is completed simultaneously with the large-capacity battery is used to describe that the time when the charging of the small-capacity battery is completed is close to or equal to the time when the charging of the large-capacity battery is completed. For example, the time difference between the completion of the charging of the small-capacity battery and the completion of the charging of the large-capacity battery is less than or equal to the time threshold 1. For example, the time threshold 1 may be 10s, and in practical cases, the time threshold 1 may also be other values, which should not be construed as limiting the embodiments of the present application.

The process of charging two batteries based on the charge port VBUS1 is described in detail below with reference to fig. 4. The process of charging two batteries based on the charging port VBUS2 may refer to the following description of fig. 5.

As shown in fig. 4, the content implementing scene 21 may include: in the case where the electronic device is plugged into a charger, the switch B1 is controlled to be turned on by a pin (e.g., a BATF pin in the path management chip 1) connected to the switch B1 through the path management chip 1, and the switch B2 is controlled to be turned on by a pin (e.g., a BATF pin in the path management chip 2) connected to the switch B2 through the path management chip 2, so that a charging current flows from the charging port VBUS1, is input to the small-capacity battery and the large-capacity battery through a line 5 (a line denoted by (5) in the figure), and the small-capacity battery and the large-capacity battery are charged in series. The charging current flows from the charging port VBUS1 and is input to the large-capacity battery through the line 6 (the line (6) is identified in the figure). After the small-capacity battery is charged, the switch B1 is controlled to be turned off by a pin (e.g., a BATF pin in the path management chip 1) to which the path management chip 1 is connected to the switch B1, so that the path management chip 1 stops charging the small-capacity battery as well as the large-capacity battery. The path management chip 2 continues to charge the large-capacity battery.

As shown in fig. 4, the content implementing scene 22 may include: in the case where the electronic device is plugged into a charger, the switch B1 is controlled to be turned off by a pin (e.g., a BATF pin in the path management chip 1) connected to the switch B1 through the path management chip 1, and the switch B2 is controlled to be turned on by a pin (e.g., a BATF pin in the path management chip 2) connected to the switch B2 through the path management chip 2, so that a charging current flows from the charging port VBUS1 and is input to the large-capacity battery through the line 6. When the high-capacity battery is charged to meet the preset condition 1, the switch B1 is controlled to be turned on by a pin (e.g., a bat pin in the path management chip 1) connected to the switch B1 through the path management chip 1, and the switch B2 is controlled to be turned off by a pin (e.g., a bat pin in the path management chip 2) connected to the switch B2 through the path management chip 2, so that a charging current flows from the charging port VBUS1, is input to the low-capacity battery and the high-capacity battery through the line 5, and charges the low-capacity battery and the high-capacity battery in series. And stopping charging until the large-capacity battery and the small-capacity battery are full.

In the process of inputting to the small-capacity battery and the large-capacity battery through the line 5, the VBUS pin and the VSYS pin in the path management chip 1 are involved. The VBUS pin in the path management chip 1 is used to receive a charging current to the path management chip 1, and then the path management chip 1 may output the processed charging current based on the VSYS pin in the path management chip 1 so that the charging current is suitable for being input to a small-capacity battery as well as a large-capacity battery. The process includes, but is not limited to, adjusting a voltage corresponding to the charging current, etc. The process of inputting to the large-capacity battery through the line 6 involves the VBUS pin and the VSYS pin in the path management chip 2. The VBUS pin in the path management chip 2 is used to receive the charging current to the path management chip 2, and then the path management chip 2 may output the processed charging current based on the VSYS pin in the path management chip 2 so that the charging current is suitable for being input to the large-capacity battery.

It should be understood that the path management chip 1 (e.g., path management chip 102 a) may include pins other than the aforementioned BATF pins, VSYS pins, and VBUS pins. The different pins have different functions, for example, may also include communication pins (e.g., SCL pin, which may be clock pins, and SDA pin, which may be data pins). The SCL pin and the SDA pin may be used to control the transfer of data between the path management chip 1 and other chips. A current sampling pin (e.g., BSP pin and BSN pin) may also be included for determining the current flowing through the U13 point based on the sampling resistor R12. A ground pin (GND pin) may also be included.

It should also be appreciated that other pins may be included in the path management chip 2 (e.g., path management chip 102 b) in addition to the aforementioned BATF pins, VSYS pins, VBUS pins. For example, current sampling pins (e.g., BSP pin and BSN pin) may also be included for determining the current flowing through the U23 point based on the sampling resistor R22. The path management chip 2 may further include an SCL pin, an SDA pin, and a GND pin.

It should be understood that the pins of the path management chip 1 and the path management chip 2 referred to in the present application are only illustrative, and more or fewer pins may actually be used, and should not be construed as limiting the embodiments of the present application.

Fig. 5 shows another example of the control circuit at the time of charging.

As shown in fig. 5, the content implementing scene 21 may include: in the case where the electronic device is plugged into a charger, the switch B1 is controlled to be turned on by a pin (e.g., a BATF pin in the path management chip 1) connected to the switch B1 through the path management chip 1, and the switch B2 is controlled to be turned on by a pin (e.g., a BATF pin in the path management chip 2) connected to the switch B2 through the path management chip 2, so that a charging current flows from the charging port VBUS2, is input to the small-capacity battery and the large-capacity battery through a line 7 (a line denoted by (7) in the figure), and charges the small-capacity battery and the large-capacity battery in series. The charging current flows from the charging port VBUS2 and is input to the large-capacity battery through a line 8 (a line (8) is shown). After the small-capacity battery is charged, the switch B1 is controlled to be turned off by a pin (e.g., a BATF pin in the path management chip 1) to which the path management chip 1 is connected to the switch B1, so that the path management chip 1 stops charging the small-capacity battery as well as the large-capacity battery. The path management chip 2 continues to charge the large-capacity battery.

As shown in fig. 5, the content implementing scene 22 may include: in the case where the electronic device is plugged into a charger, the switch B1 is controlled to be turned off by a pin (e.g., a BATF pin in the path management chip 1) connected to the switch B1 through the path management chip 1, and the switch B2 is controlled to be turned on by a pin (e.g., a BATF pin in the path management chip 2) connected to the switch B2 through the path management chip 2, so that a charging current flows from the charging port VBUS2 and is input to the large-capacity battery through the line 8. When the high-capacity battery is charged to meet the preset condition 1, the switch B1 is controlled to be turned on by a pin (e.g., a bat pin in the path management chip 1) connected to the switch B1 through the path management chip 1, and the switch B2 is controlled to be turned off by a pin (e.g., a bat pin in the path management chip 2) connected to the switch B2 through the path management chip 2, so that a charging current flows from the charging port VBUS2 and is input to the low-capacity battery and the high-capacity battery through the line 7 to charge the low-capacity battery and the high-capacity battery in series. And stopping charging until the large-capacity battery and the small-capacity battery are full.

For descriptions of other contents in fig. 5, reference may be made to the foregoing, and this is not repeated in the embodiments of the present application.

The devices included in the control circuit are exemplarily described below in connection with fig. 3-5.

First, a description will be given of a part of functions of a small-capacity battery and a large-capacity battery.

In some possible cases, the low-capacity battery may include therein a fuel gauge chip 1 (e.g., fuel gauge chip 101 a), a switch (e.g., switch A1), and at least one cell, for example, two cells (cell S11 and cell S12) may be included therein. The small-capacity battery may further include a fuse 1 (fuse L11) and a sampling resistor 1 (e.g., sampling resistor R11).

The fuel gauge chip 1 can also be regarded as a battery protection chip (battery) that can be used to detect the state of a small-capacity battery (including, for example, the state at the time of power supply and the state at the time of charge). For example, can be used to measure the capacity included in a small-capacity battery. But also to prevent overcharging or overdischarging of the small-capacity battery. The switch A1 is opened when the battery is overcharged or overdischarged, so that the small-capacity battery is protected. Where over-discharge includes the battery being powered, the battery outputs a supply current or output voltage that is greater, for example greater than the maximum current or voltage that can be received by the system powered by the battery. Overcharging includes charging the battery with a charge current or input voltage that is greater than, for example, the maximum charge current or maximum discharge current of the battery.

The following describes an exemplary description of the parts of the fuel gauge chip 1 that are involved in its operation.

The fuel gauge chip 1 may include at least one pin therein, and different pins may perform different functions. For example, pins for measuring the corresponding voltages of the respective battery cells may be included, such as the V0 pin, the V1 pin, the V2 pin, and the V3 pin shown in the figure. The V2 and V3 pin measurements are voltages included in the small-capacity battery, i.e., voltages at the U12 point. V0 is used to measure the input voltage of one of the cells, e.g., the voltage at point U10. V1 is used to measure the voltage of the cell, such as the voltage at the U11 point.

The fuel gauge chip may further include a voltage sampling pin (e.g., a PA pin) that may be used to measure the output voltage of the small-capacity battery when the small-capacity battery is powering a load in a high-voltage domain, where the output voltage is the sum of the voltages output when the small-capacity battery is connected in series with the large-capacity battery, e.g., the voltage at the U13 point. The PA pin may be used to measure the input voltage of the small-capacity battery, such as the voltage at point U13, while the small-capacity battery is being charged.

The fuel gauge chip may also include current sampling pins (such as SN pin and SP pin) for detecting the corresponding current of the small-capacity battery. When the small-capacity battery is discharged, the current corresponding to the small-capacity battery is a supply current (or referred to as a discharge current), and when the small-capacity battery is charged, the current corresponding to the small-capacity battery is a charging current. The SN pin is connected with one end of the sampling resistor R11, and the SP pin is connected with the other end of the sampling resistor R11. The voltage at two ends of the sampling resistor R11 can be measured through the SN pin and the SP pin, and then the difference between the voltages at two ends is calculated and divided by the impedance value of the sampling resistor R11, so that the current corresponding to the small-capacity battery can be obtained.

The fuel gauge chip 1 may further include communication pins (such as an SCL pin and an SDA pin), where the SCL pin may be a clock pin and the SDA may be a data pin. The SCL pin and SDA pin may be used to control the transfer of data between the fuel gauge chip and other chips. A chip such as the controller or the path management chip 1 may acquire data measured by the fuel gauge chip through the SCL pin and the SDA pin, for example, data such as an output voltage of the small-capacity battery and a current corresponding to the small-capacity battery.

The functions of the fuel gauge chip may include other functions in addition to those previously mentioned, and the embodiments of the present application are not limited thereto.

In some possible cases, the high-capacity battery may include therein a fuel gauge chip 2 (e.g., fuel gauge chip 101 b), a switch (e.g., switch A2), and at least one cell, for example, two cells (cell S21 and cell S22) may be included therein. The high-capacity battery may further include a fuse 2 (fuse L21) and a sampling resistor 2 (e.g., sampling resistor R21), wherein one end of the sampling resistor R21 is connected to the high-capacity battery, and the other end is grounded, i.e., the other end is connected to a ground pin (GND pin).

The fuel gauge chip 2 may also be regarded as a battery protection chip, which may be used to detect the state of a large-capacity battery (including, for example, the state at the time of power supply and the state at the time of charge). For example, can be used to measure the capacity included in a small-capacity battery. And can also be used to prevent overcharging or overdischarging of the large capacity battery. The switch A2 is opened when the battery is overcharged or overdischarged, so that the small-capacity battery is protected.

The fuel gauge chip 2 comprises a control pin (PRES pin), and the voltage output by a C pin and a D pin which are arranged in the fuel gauge chip 2 can be controlled by inputting different control signals BATC2 to the control pin (PRES pin) so as to realize the disconnection and the connection of the control switch A2.

It should be understood herein that the description of the fuel gauge chip 2 may refer to the description of the fuel gauge chip 1 previously described. For example, the small-capacity battery may be replaced by a large-capacity battery, and the description thereof will be omitted.

In some possible cases, the high voltage load may be a display screen, for example, a liquid crystal display screen (liquid crystal display, LCD), where the operating voltage of the liquid crystal display screen is about 30V, the maximum operating current is 150mA, and the power is about 4.5W when the screen is fully lit, which is low power consumption. When the LCD is powered by a 4S battery, the efficiency of the voltage converter is about 4% higher than when the LCD is powered by a 2S battery. The 4S battery is a battery including 4 electric cells, for example, the large-capacity battery includes 2 electric cells, and the small-capacity battery includes 2 electric cells, and the large-capacity battery and the small-capacity battery are connected in series to obtain the 4S battery. The 2S battery is a battery including 2 cells, for example, the large-capacity battery or the small-capacity battery described above. In a typical long endurance scene, such as a bright screen standby, a local video, daily office, LCD semi-bright scene and the like, the LCD has high utilization rate, and the conversion efficiency of the voltage converter is required to be improved.

Exemplary electronic devices provided by embodiments of the present application are described below.

The embodiment will be specifically described below with reference to an electronic device as an example. It should be understood that an electronic device may have more or fewer components than shown in the figures, may combine two or more components, or may have a different configuration of components. The various components shown in the figures may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

The receiving end device in the embodiment of the present application may be a terminal device on which an Android, huaweiharmony system (HuaweiHarmonyOS), iOS or other operating systems are installed. For example, the device may be a notebook computer, a vehicle-mounted device, or the like. The embodiments of the present application are not limited in this regard.

The electronic device may include: a processor 171, a main memory 172, a secondary memory 173, a chipset 174, a power switch 175, a display 176, a USB communication processing module 177, a wireless communication processing module 178, and a control circuit 179.

The processor 171 may be used to read and execute computer readable instructions, and may be referred to as a controller.

Main memory 172 is coupled to processor 171 for storing various software programs and/or sets of instructions, which software programs and/or sets of instructions in main memory 172 may be directly readable by processor 171.

The secondary memory 173 is used for storing various resources such as pictures, audios and videos, etc.

Chipset 174 may include one or more of a Northbridge chip 174A and a southbridge chip 174B. For connecting a microprocessor (not shown) to other parts of the electronic device.

The power switch 175 may be used to control the power supplied by a power source to an electronic device.

The display screen 176 is used to display images, videos, and the like. The display screen 176 includes a display panel. The display panel may employ a liquid crystal display (liquid crystal display, LCD). The display panel may also be manufactured using organic light-emitting diode (OLED), active-matrix organic light-emitting diode (AMOLED) or active-matrix organic light-emitting diode (active-matrix organic light emitting diode), flexible light-emitting diode (FLED), mini, micro-OLED, quantum dot light-emitting diode (quantum dot light emitting diodes, QLED), or the like. In some embodiments, the electronic device may include 1 or N display screens 176, N being a positive integer greater than 1.

The USB communication processing module 177 may be used to communicate with other devices through a USB interface (not shown).

The wireless communication processing module 178 may include one or more of a Bluetooth (BT) communication processing module 178A, WLAN communication processing module 178B for establishing wireless communication connections with other electronic devices.

The control circuit 179 is used to power the system of the electronic device, which may also charge the battery through the control circuit. For details of the control circuit, reference is made to the foregoing description, and no further description is given here.

In the embodiment of the present application, the processor of the receiving end device may call the computer instructions stored in the internal memory, so that the electronic device executes the method referred to in the embodiment of the present application.

The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

As used in the above embodiments, the term "when …" may be interpreted to mean "if …" or "after …" or "in response to determination …" or "in response to detection …" depending on the context. Similarly, the phrase "at the time of determination …" or "if detected (a stated condition or event)" may be interpreted to mean "if determined …" or "in response to determination …" or "at the time of detection (a stated condition or event)" or "in response to detection (a stated condition or event)" depending on the context.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk), etc.

Those of ordinary skill in the art will appreciate that implementing all or part of the above-described method embodiments may be accomplished by a computer program to instruct related hardware, the program may be stored in a computer readable storage medium, and the program may include the above-described method embodiments when executed. And the aforementioned storage medium includes: ROM or random access memory RAM, magnetic or optical disk, etc.

Claims

1. A control circuit, characterized in that, include first battery, second battery, first switch, second switch, third switch, first route management chip and second route management chip in the control circuit, wherein:

the first end of the first battery is connected with the first end of the second battery;

the second end of the first battery is connected with the first end of the first switch; the first end of the first switch and the second end of the first battery are also connected with a first voltage converter through the second switch; the first voltage converter is connected with a high-voltage load; the second switch is also connected with the first path management chip;

the first end of the second battery is connected with the second end of the first switch, and the second end of the first switch and the first end of the second battery are also connected with a second voltage converter through the third switch; the second voltage converter is connected with a low-voltage load; the third switch is also connected with the second path management chip;

When the first end of the first switch is connected with the second end of the first battery, the first end of the first switch is also connected with the first voltage converter through the second switch, and the second end of the first switch is connected with the first end of the second battery; and further causing the second battery to be connected to the first voltage converter through the first switch and the second switch;

in the case that the capacities of the first battery and the second battery are not exhausted, the first switch is in an off state, the first battery and the second battery are connected in series to supply power to the high-voltage load through the first voltage converter, and the second battery supplies power to the low-voltage load through the second voltage converter; the input voltage of the first voltage converter is equal to or close to the output voltage of the first battery plus the output voltage of the second battery; the input voltage of the second voltage converter is equal to or close to the output voltage of the second battery;

the first battery charges the second battery when the capacity of the second battery is smaller than a second threshold value and the first battery comprises a capacity larger than the second threshold value;

Wherein the first battery charging the second battery includes: and the first electric quantity of the first battery is transmitted to the first path management chip and then transmitted to the second path management chip for adjustment, and the adjusted first electric quantity is transmitted to the second battery.

2. The control circuit of claim 1, wherein,

and under the condition that the first battery and the second battery are full, the capacity of the first battery is smaller than that of the second battery.

3. The control circuit of claim 1, wherein,

the high-voltage load is a load with the working voltage being greater than a first threshold value; the low-voltage load is a load with the working voltage smaller than or equal to the first threshold value; the first threshold is greater than or equal to a sum of a voltage corresponding to the first battery when full power and a voltage corresponding to the second battery when full power.

4. A control circuit according to any one of claims 1-3, characterized in that the control circuit further comprises:

in the case where the capacity of the first battery is depleted and the capacity of the second battery is not depleted, the first switch is in an on state, the second battery supplies power to the high voltage load through the first voltage converter, and the second battery supplies power to the low voltage load through the second voltage converter.

5. A control circuit according to any one of claims 1-3, characterized in that the control circuit further comprises:

transmitting electric quantity to the first path management chip and the second path management chip through a charging port;

under the condition that the first battery is charged before the second battery is charged, the second switch and the third switch are conducted, and the first battery and the second battery are charged in series based on the first path management core; and charging the second battery based on the second path management core;

after the first battery is charged, the second switch is turned off, and the second battery is continuously charged based on the second path management core.

6. The control circuit of claim 5, wherein in the event that the first battery charges the second battery, the control circuit further comprises:

the first battery supplies power to the high-voltage load through the first voltage converter, and the first battery supplies power to the low-voltage load based on the second path management chip.

7. The control circuit of claim 5, wherein the control circuit further comprises:

Under the condition that the first battery and the second battery are charged simultaneously, the second switch is disconnected and the third switch is turned on, and the second battery is charged based on the second path management core;

when the capacity of the second battery is determined to be increased by a first capacity, the third switch is turned off and the second switch is turned on, and the first battery and the second battery are charged in series based on the first path management core; the first capacity is a difference between a capacity required to fully charge the second battery and a capacity required to fully charge the first battery.

8. A control circuit according to any of claims 1-3, 6 or 7, wherein the high voltage load comprises a display screen.

9. A circuit control method is characterized by being applied to electronic equipment of a control circuit, wherein the control circuit comprises a first battery, a second battery, a first switch, a second switch, a third switch, a first path management chip and a second path management chip,

the method comprises the following steps:

under the condition that the capacities of the first battery and the second battery are not consumed as much as possible, the electronic equipment controls the first switch to be in an off state, and supplies power for a high-voltage load based on the series connection of the first battery and the second battery, and supplies power for the low-voltage load through the second voltage converter based on the second battery; the input voltage of the first voltage converter is equal to or close to the output voltage of the first battery plus the output voltage of the second battery; the input voltage of the second voltage converter is equal to or close to the output voltage of the second battery;

Controlling the first battery to charge the second battery by the electronic equipment under the condition that the capacity of the second battery is smaller than a second threshold value and the capacity of the first battery is larger than the second threshold value;

wherein charging the second battery based on the first battery includes: and the first electric quantity of the first battery is transmitted to the first path management chip and then transmitted to the second path management chip for adjustment, and the adjusted first electric quantity is transmitted to the second battery.

10. The method according to claim 9, wherein the method further comprises:

transmitting electric quantity to the first path management chip and the second path management chip through the charging port;

under the condition that the first battery is charged before the second battery is charged, a second switch and a third switch are conducted, and the first battery and the second battery are charged in series based on the first path management core; and charging the second battery based on the second path management core; the first end of the second switch is connected with the first path management chip, and the second end of the second switch is connected with the first battery; the first end of the third switch is connected with the second path management chip, and the second end of the third switch is connected with the second battery; the first path management chip and the second path management chip are connected with the charging port;

11. The method according to claim 9, wherein the method further comprises:

12. An electronic device, characterized in that the electronic device comprises a control circuit, which is a control circuit as described in any of claims 1 to 8.

13. An electronic device, characterized in that the electronic device comprises a control circuit and a processor, based on which the processor is arranged to perform the circuit control method as described in any of claims 9 to 11.