CN116014853A

CN116014853A - Power supply circuit, electronic device and charging control method

Info

Publication number: CN116014853A
Application number: CN202310045077.XA
Authority: CN
Inventors: 杨平; 魏华兵
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2023-01-30
Filing date: 2023-01-30
Publication date: 2023-04-25

Abstract

The application discloses a power supply circuit, electronic equipment and a charging control method, and belongs to the technical field of electronic equipment. A power supply circuit, comprising: the input end of the first charge pump is connected with a power supply; the first end of the battery pack is connected with the first output end of the first charge pump, the second end of the battery pack is grounded, the battery pack comprises N batteries which are connected in series, and N is an integer larger than 1; the input end of the bidirectional conversion circuit is connected with the second output end of the first charge pump, the bidirectional conversion circuit comprises M second charge pumps, the output ends of the M second charge pumps are respectively connected with M public ends among N batteries, the bidirectional conversion circuit is used for boosting or reducing the voltage on a line, and M=N-1.

Description

Power supply circuit, electronic device and charging control method

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to a power supply circuit, electronic equipment and a charging control method.

Background

In the prior art, a plurality of batteries are usually arranged in electronic equipment with smaller volume such as a mobile phone due to the structural limitation of the electronic equipment such as the mobile phone, and the plurality of batteries are connected in series, and are also connected in parallel.

In the related art, when the capacities of a plurality of batteries in the electronic device are different, the batteries are charged in a parallel manner, so that the charging speed of the batteries is slower, and the charging speed of the batteries in a serial manner is faster, but the synchronous charging of the batteries with different capacities cannot be guaranteed, so that the capacity loss of the batteries is caused, and precious battery capacity resources are wasted.

Disclosure of Invention

The embodiment of the application aims to provide a power supply circuit, electronic equipment and a charging control method, which realize that batteries with different capacities in a battery pack can be charged in series, and the batteries with different capacities can be charged in series and synchronously filled, so that the flexibility of battery stacking design in the electronic equipment is improved, and the overall charging speed of the electronic equipment is improved.

In a first aspect, embodiments of the present application provide a power supply circuit, including: the input end of the first charge pump is connected with a power supply; the first end of the battery pack is connected with the first output end of the first charge pump, the second end of the battery pack is grounded, the battery pack comprises N batteries which are connected in series, and N is an integer larger than 1; the input end of the bidirectional conversion circuit is connected with the second output end of the first charge pump, the bidirectional conversion circuit comprises M second charge pumps, the output ends of the M second charge pumps are respectively connected with M public ends among N batteries, the bidirectional conversion circuit is used for boosting or reducing the voltage on a line, and M=N-1.

In a second aspect, embodiments of the present application provide an electronic device including a power supply circuit as in the first aspect.

In a third aspect, an embodiment of the present application provides a charging control method applied to the power supply circuit in the first aspect or the electronic device in the second aspect, where the charging control method includes: controlling the first charge pump, the bidirectional conversion circuit and the battery pack to be conducted; determining a first current value output by a first charge pump according to N capacity values corresponding to N batteries; controlling the first charge pump to output a first current value so that a first end of the battery pack receives a second current value, and an input end of the bidirectional conversion circuit receives a third current value, wherein the first current value is the sum of the second current value and the third current value; the bidirectional conversion circuit converts the third current value into a fourth current value and transmits the fourth current value to M common terminals among N batteries.

In a fourth aspect, an embodiment of the present application provides a charging control device applied to the power supply circuit in the first aspect or the electronic apparatus in the second aspect, where the charging control device includes: the control module is used for controlling the first charge pump and the bidirectional conversion circuit to be conducted to the battery pack; the determining module is used for determining a first current value output by the first charge pump according to N capacity values corresponding to N batteries; the control module is used for controlling the first charge pump to output a first current value so that the first end of the battery pack receives a second current value and the input end of the bidirectional conversion circuit receives a third current value, and the first current value is the sum of the second current value and the third current value; the bidirectional conversion circuit converts the third current value into a fourth current value and transmits the fourth current value to M common terminals among N batteries.

In a fifth aspect, embodiments of the present application provide an electronic device, including: a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the charge control method as in the third aspect.

In a sixth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the charge control method as in the third aspect.

In a seventh aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and where the processor is configured to execute a program or instructions to implement the steps of the charge control method according to the third aspect.

In an eighth aspect, embodiments of the present application provide a computer program product stored in a storage medium, the program product being executed by at least one processor to implement the steps of the charge control method as in the third aspect.

In this embodiment, through set up first charge pump between group battery and power to with two output of first charge pump respectively with the input of group battery, and bi-directional conversion circuit's input is connected, directly supply power to the battery that is connected with first charge pump in the group battery through first charge pump, and M second charge pump is supplied power to the battery of other series connection, the battery of having realized different capacities in the group battery can establish ties and charge, and the battery of different capacities establishes ties and charge and can be fully charged in step, increased the flexibility that the battery piles up the design in the electronic equipment, improved electronic equipment's whole charge rate.

Drawings

FIG. 1 illustrates a circuit schematic of a power supply circuit according to some embodiments of the present application;

fig. 2 illustrates an equivalent circuit diagram of an on-off state of a MOS transistor at a time t1 in a second charge pump provided in some embodiments of the present application;

fig. 3 illustrates an equivalent circuit diagram of an on-off state of a MOS transistor at a time t2 in a second charge pump provided in some embodiments of the present application;

FIG. 4 illustrates waveforms of current, voltage and gate signals during charging of an electronic device provided in some embodiments of the present application;

FIG. 5 illustrates a schematic diagram of a current flow for charging a power supply circuit provided by some embodiments of the present application;

FIG. 6 illustrates a circuit schematic of a power supply circuit according to some embodiments of the present application;

FIG. 7 illustrates a circuit schematic of a power supply circuit according to some embodiments of the present application;

FIG. 8 illustrates a circuit schematic of a power supply circuit according to some embodiments of the present application;

FIG. 9 illustrates a circuit schematic of a power supply circuit according to some embodiments of the present application;

FIG. 10 illustrates a circuit schematic of a power supply circuit according to some embodiments of the present application;

FIG. 11 illustrates a schematic diagram of a current flow for charging a power supply circuit provided by some embodiments of the present application;

FIG. 12 illustrates a flow diagram of a charge control method according to some embodiments of the present application;

fig. 13 illustrates a block diagram of a charge control device according to some embodiments of the present application;

FIG. 14 illustrates a block diagram of an electronic device, according to some embodiments of the present application;

fig. 15 is a schematic hardware structure of an electronic device implementing some embodiments of the present application.

Wherein reference numerals of fig. 1 to 11 are as follows:

100 power supply circuits, 110 first charge pumps, 120 bidirectional conversion circuits, 122 second charge pumps, 130 battery packs, 140 buck charging circuits.

The transistor comprises a Q1 first switch piece, a Q2 second switch piece, a Q3 third switch piece, a Q4 first MOS tube, a Q5 second MOS tube, a Q6 third MOS tube, a Q7 fourth MOS tube, a Q8 fifth MOS tube, a Q9 sixth MOS tube, a C1 first capacitor, a C2 second capacitor, a C3 third capacitor, a C4 fourth capacitor, a C5 fifth capacitor and a C6 sixth capacitor.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The power supply circuit, the electronic device and the charging control method provided in the embodiments of the present application are described in detail below with reference to fig. 1 to 15 through specific embodiments and application scenarios thereof.

In some embodiments of the present application, an electronic device is provided, fig. 1 shows a circuit schematic diagram of a power supply circuit according to some embodiments of the present application, as shown in fig. 1, the power supply circuit 100 includes: a first charge pump 110, a battery pack 130, and a bi-directional conversion circuit 120.

Wherein the input end of the first charge pump 110 is connected with a power supply; a first end of the battery pack 130 is connected with a first output end of the first charge pump 110, a second end of the battery pack 130 is grounded, the battery pack 130 comprises N batteries which are connected in series, and N is an integer greater than 1; the input end of the bidirectional conversion circuit 120 is connected with the second output end of the first charge pump 110, the bidirectional conversion circuit 120 comprises M second charge pumps 122, the output ends of the M second charge pumps 122 are respectively connected with M common ends between N batteries, the bidirectional conversion circuit 120 is used for boosting or reducing the voltage on the line, and m=n-1.

In this embodiment, the first Charge Pump 110 is a switched capacitor converter (Charge Pump), the bidirectional conversion circuit 120 is a bidirectional switched capacitor converter, and the bidirectional switched capacitor converter can adjust the adjustment direction of the conversion ratio, for example: the bidirectional switched capacitor converter is 2:1, the bidirectional switched capacitor converter can operate at 2:1, step down 2V to V, the bidirectional switched capacitor converter is also capable of operating at 1:2, boost V to 2V.

In this embodiment, the battery pack 130 includes N batteries, the N batteries are connected in series, the first end of the battery pack 130 is connected with the first output end of the first charge pump 110 as a charging input end, the input end of the first charge pump 110 is connected with a power supply, and the power supply is used as a charging power supply of the power supply circuit 100 to supply power to the charging process of the power supply circuit 100. The second output end of the first charge pump 110 is connected to the input end of the bidirectional conversion circuit 120, the bidirectional conversion circuit 120 includes M second charge pumps 122, each second charge pump 122 corresponds to one output end, so the bidirectional conversion circuit 120 includes M output ends, the M output ends are respectively connected to the common ends of two adjacent cells in the N cells, the N cells connected in series have N-1 common ends, and m=n-1.

As shown in fig. 1, n=2, m=1, the first charge pump 110 is a 4:2 charge pump, and two output terminals of the first charge pump 110 are respectively connected to the input terminal of the battery 1 and the input terminal of the bidirectional conversion circuit 120. The bidirectional conversion circuit 120 includes two second charge pumps 122, where the second charge pumps 122 are 2: 1. The bidirectional conversion circuit 120 includes an output terminal connected to a common terminal of the battery 1 and the battery 2. Each of the battery 1 and the battery 2 includes a battery cell and a battery protection plate. The power supply circuit 100 further includes a first switching element Q1, the first switching element Q1 is connected between the first charge pump 110 and the power supply, the first charge pump 110 further includes a second switching element Q2, and the bidirectional conversion circuit 120 further includes a third switching element Q3.

When the battery pack 130 in the power supply circuit 100 starts to charge, it is necessary to obtain a capacity value of each battery in the battery pack 130, where the capacity value is a battery capacity of a corresponding battery, calculate a first charge current value output by the first charge pump 110 based on the battery capacity, control the first charge pump 110 to output the first charge current value, and convert the first charge current value by the bidirectional conversion circuit 120 and then input the converted first charge current value to N batteries, so that the N batteries can be simultaneously charged.

Specifically, the first, second and third switching elements Q1, Q2 and Q3 are controlled to be in a conductive state, and a current outputted from the power source can flow through the first charge pump 110, the bidirectional conversion circuit 120 and the battery pack 130. The first charge pump 110 operates at 4:2, both second charge pumps 122 in the bidirectional conversion circuit 120 operate at 2:1, step down 2V to V charges

battery

2, and 2V directly powers battery 1.

Fig. 2 illustrates an equivalent circuit diagram of an on-off state of a MOS transistor in a second charge pump at a time t1 provided in some embodiments of the present application, fig. 3 illustrates an equivalent circuit diagram of an on-off state of a MOS transistor in a second charge pump at a time t2 provided in some embodiments of the present application, and fig. 4 illustrates a waveform diagram of a current, a voltage, and a gate signal in a charging process of a power supply circuit provided in some embodiments of the present application. As shown in fig. 3 and 4, the two second charge pumps 122 each include two MOS transistors, which are a first MOS transistor Q4, a second MOS transistor Q5, a third MOS transistor Q6, and a fourth MOS transistor Q7. At the same time, only two of the 4 MOS transistors in the two second charge pumps 122 are turned on. At time t1, the first MOS transistor Q4 and the second MOS transistor Q5 are turned on, and the rest MOS transistors are turned off. At time t2, the third MOS transistor Q6 and the fourth MOS transistor Q7 are turned on, and the rest MOS transistors are turned off.

As shown in fig. 4, gate signal is a threshold value output at time t1 and time t2, flying cap Voltage is a voltage value of the sixth capacitor C6 at time t1 and time t2, and Flying cap current is a current value of the sixth capacitor C6 at time t1 and time t 2.

Fig. 5 illustrates a schematic diagram of a current flow of charging a power supply circuit according to some embodiments of the present application, and as shown in fig. 5, a first charging loop of the power supply circuit 100 is controlled to be conductive, and the first charging loop includes a first charge pump 110 and a bidirectional conversion circuit 120. The power supply circuit 100 can realize rapid charging of the battery pack 130 through the first charge pump 110 and the bidirectional conversion circuit 120. The first charge pump 110 operates in either the 4:2 or 2:2 mode to charge the series branch of battery 1 and battery 2. Simultaneously, the two second charge pumps 122 work in a 2:1 mode, and step down 2V to charge the battery 2 and supply power to devices in the power supply circuit 100, so that the charging and power consumption functions during rapid charging are realized.

As shown in fig. 3 and 4, in one switching period T (t=t1+t2), t1=txd, t2=t× (1-D), D is a duty cycle. For example, in a switching waveform with a frequency fsw=500 KHz and a duty cycle d=50%, t1=t×d=d/fsw=0.5/0.5×1000000s=1us, and similarly t2=1us.

As shown in fig. 5, at the time of t1=1us, the first MOS transistor Q4 and the second MOS transistor Q5 are turned on, the third MOS transistor Q6 and the fourth MOS transistor Q7 are turned off, and then the current i3 output by the power supply charges the first capacitor C1, vpmid=vout+vcfly, where VPMID is the voltage value at the second capacitor C2, VOUT is the voltage value at the third capacitor C3, and VCFLY is the voltage value at the sixth capacitor C6; at the time of t2=1us, the third MOS transistor Q6 and the fourth MOS transistor Q7 are turned on, the first MOS transistor Q4 and the second MOS transistor Q5 are turned off, the first capacitor C1 discharges to charge VOUT continuously with the equivalent current i3, and V-cfly=vout. Then there is a total of 2 x i3 current on VOUT for charging.

As shown in fig. 5, for example, the battery 1 has a capacity of 2000mAH, the battery 2 has a capacity of 2800mAH, and the maximum output power of the charger is 120W (Max 20V/6A), then the maximum charging current of the battery 1 is 2×6a×2000/(2000+2800) =5a, and the charging rate of the battery 1 is at least 5/2=2.5c. Similarly, the maximum charging current of the battery 2 is 7A, and the charging rate of the battery 2 is at least 7/2.8=2.5C.

Assuming that the current loss value of the power supply circuit 100 is i4=200ma, when the bidirectional first charge pump 110 is first requested to output the current 2×i3=2a, the current 2×i3-i4 flowing into the battery 2 from the first charge pump 110 is (2-0.2) a=1.8a. According to the capacity ratio of the battery 1 and the battery 2, the current i1= (2×i3-i 4) ×cap 1/(Cap 2-Cap 1) =1.8a×2000/(2800-2000) =4.5A is calculated, and the first charge current value corresponding to the first charge pump 110 is i1+i3=4.5a+1a=5.5A. The currents i1 and i2 flowing into the battery 1 and the battery 2 are respectively 4.5A and 6.3A, and the ratio Cap1/Cap 2=i1/i 2 of capacity is satisfied, so that the two batteries can be simultaneously charged.

In this embodiment, through setting up first charge pump 110 between group battery 130 and power to two output of first charge pump 110 are connected with group battery 130's input respectively to and bi-directional conversion circuit 120's input, supply power in group battery 130 through first charge pump 110 is direct, and M second charge pump 122 supplies power to the battery of remaining series connection, the battery of having realized in group battery 130 different capacity can establish ties and charge, and the battery of different capacities establishes ties and charge and can be fully charged in step, increased the flexibility that stacks the design in the power supply circuit 100, improved the whole charge rate of power supply circuit 100.

In some embodiments of the present application, the ratio of the input value to the output value of the first charge pump 110 is 2N to N.

In the embodiment of the present application, the conversion ratio of the first charge pump 110 is 2N to N, so that the first charge pump 110 can step down the voltage directly output to the input terminal of the battery pack 130 from 2V to V.

Illustratively, the number of cells in the battery pack 130 is 2, and the conversion ratio is 4:2, the first charge pump 110 being capable of operating in a 4:2 mode of operation, and also capable of operating in a 2: 2.

Illustratively, the number of cells in the battery pack 130 is 3, and the conversion ratio is 6:3, the first charge pump 110 being capable of operating at 6:3, can also operate at 3:3, an operating mode of the device.

Illustratively, the number of cells in the battery pack 130 is 4, and the conversion ratio is 8:4, the first charge pump 110 being capable of operating at 8:4, can also operate at 4:4, an operating mode of the device.

Note that the first charge pumps 110 with different conversion ratios belong to different components.

In this embodiment, the number of batteries is not limited specifically, and the conversion ratio of the first charge pump 110 can be set based on the number of batteries connected in series in the battery pack 130, so as to ensure the stability of charging the battery pack 130 through the first charge pump 110 and the bidirectional conversion circuit 120.

In some embodiments of the present application, an input of a first target charge pump of the M second charge pumps 122 is connected to a second output of the first charge pump 110; the ratio of the input value to the output value of the first target charge pump is N: q, Q is the number of batteries between the output terminal and the ground terminal of the first target charge pump.

In this embodiment, the bidirectional conversion circuit 120 includes M second charge pumps 122, and the input ends of the first target charge pumps of the M second charge pumps 122 are connected to the second output ends of the first charge pump 110, where the number of the first target charge pumps is at least one.

As shown in fig. 1, the number of batteries in the battery pack 130 is 2, two batteries are respectively battery 1 and battery 2, the conversion ratio of the first charge pump 110 is 4:2, the number of the first output terminals of the first charge pump 110 is 1, the number of the second output terminals is 1, and the input terminal of the second charge pump 122 is connected with the second output terminal of the first charge pump 110. A first output terminal of the first charge pump 110 is connected to a first terminal of the battery 1, an output terminal of the second charge pump 122 is connected to a common terminal of the battery 1 and the battery 2, and a conversion ratio of the second charge pump 122 is 2:1.

fig. 6 shows a circuit schematic of a power supply circuit according to some embodiments of the present application, as shown in fig. 6, the number of batteries in the battery pack 130 is 3, three batteries are respectively battery 1, battery 2 and battery 3, the conversion ratio of the first charge pump 110 is 6:3, the number of first output terminals of the first charge pump 110 is 1, the number of second output terminals is 2, and the input terminals of the two second charge pumps 122 are respectively connected to the 2 second output terminals of the first charge pump 110. Wherein a first output terminal of the first charge pump 110 is connected to a first terminal of the battery 1, an output terminal of one second charge pump 122 is connected to a common terminal of the battery 1 and the battery 2, a conversion ratio of the second charge pump 122 is 3:2, and an output terminal of the other second charge pump 122 is connected to a common terminal of the battery 2 and the battery 3, and a conversion ratio of the second charge pump 122 is 3:1.

Fig. 7 shows a circuit schematic of a power supply circuit according to some embodiments of the present application, as shown in fig. 7, the number of batteries in the battery pack 130 is 4, four batteries are respectively battery 1, battery 2, battery 3 and battery 4, the conversion ratio of the first charge pump 110 is 8:4, the number of first output terminals of the first charge pump 110 is 1, and the number of second output terminals is 3. The first output terminal of the first charge pump 110 is connected to the first terminal of the battery 1, the input terminals of 3 second charge pumps 122 are respectively connected to the 3 second output terminals of the first charge pump 110, the output terminal of one second charge pump 122 is connected to the common terminal of the battery 1 and the battery 2, the conversion ratio of the second charge pump 122 is 4:3, the output terminal of the other second charge pump 122 is connected to the common terminal of the battery 2 and the battery 3, the conversion ratio of the second charge pump 122 is 4:2, the output terminal of the other second charge pump 122 is connected to the common terminal of the battery 3 and the battery 4, and the conversion ratio of the second charge pump 122 is 4:1.

In the embodiment of the present application, the conversion ratio of the first target charge pump connected to the second output terminal of the first charge pump 110 is set to N: q, and Q is the battery number between the output end of first target charge pump and the ground terminal, can guarantee that every first target charge pump just supplies power to the charge pump between ground terminal and the corresponding first target charge pump respectively.

In some embodiments of the present application, at least two second target charge pumps of the M second charge pumps 122 are connected in series with each other; the ratio of the input value to the output value of the second target charge pump is X:Y, X is the output value of the charge pump connected with the input end of the second target charge pump, and Y is the number of batteries between the output end of the second target charge pump and the grounding end.

In the embodiment of the present application, the bidirectional conversion circuit 120 includes M second charge pumps 122, and at least two second target charge pumps of the M second charge pumps 122 are connected in series.

Specifically, the first charge pump 110 includes 1 first output terminal and 1 second output terminal, and the second target charge pumps of at least two of the M second charge pumps 122 are connected in series with each other, where the second target charge pump includes two output terminals, and an input terminal of one of the second target charge pumps is connected to the first output terminal of the previous second target charge pump, and the second output terminal of the previous second target charge pump is connected to a common terminal between two batteries connected in series.

Fig. 8 shows a circuit schematic of a power supply circuit according to some embodiments of the present application, as shown in fig. 8, the number of batteries in the battery pack 130 is 3, three batteries are respectively battery 1, battery 2 and battery 3, the conversion ratio of the first charge pump 110 is 6:3, the number of first output terminals of the first charge pump 110 is 1, the number of second output terminals is 1, and two second charge pumps 122 are connected in series, wherein the first output terminal of the first charge pump 110 is connected with the first terminal of the battery 1, the first output terminal of one second charge pump 122 is connected with the common terminal of the battery 1 and the battery 2, the conversion ratio of the second charge pump 122 is 3:2, the input terminal of the other second charge pump 122 is connected with the second output terminal of the previous second charge pump 122, the second output terminal of the second charge pump 122 is connected with the common terminal of the battery 2 and the battery 3, and the conversion ratio of the second charge pump 122 is 2:1.

Illustratively, a first target charge pump of the M second charge pumps 122 in the bidirectional conversion circuit 120 has an input connected to a second output of the first charge pump 110, and a second target charge pump has an input connected to a second output of a previous second target charge pump.

Fig. 9 shows a circuit schematic of a power supply circuit according to some embodiments of the present application, as shown in fig. 9, the number of batteries in the battery pack 130 is 4, the four batteries are respectively battery 1, battery 2, battery 3 and battery 4, the conversion ratio of the first charge pump 110 is 8:4, and the output terminals of the first charge pump 110 are connected to the input terminals of two first target charge pumps. One of the first target charge pumps comprises only a first output terminal through which it is connected to the common terminal of the battery 1 and the battery 2, the conversion ratio of the first target charge pump being 4:3. One of the first target charge pumps comprises a first output terminal and a second output terminal, the first target charge pump is connected with a common terminal of the battery 2 and the battery 3 through the first output terminal, and the conversion ratio of the first target charge pump is 4:2. The input end of the second target charge pump is connected with the second output end of the last first target charge pump, the output end of the second target charge pump is connected with the common end of the battery 3 and the battery 4, and the conversion ratio of the second target charge pump is 2:1.

Fig. 10 is a circuit schematic of a power supply circuit according to some embodiments of the present application, as shown in fig. 10, the number of batteries in the battery pack 130 is 3, the conversion ratio of the three batteries, namely, battery 1, battery 2 and battery 3, of the first charge pump 110 is 6:3, and the output terminal of the first charge pump 110 is connected to the input terminal of the first target charge pump. The first target charge pump comprises a first output terminal and a second output terminal, the first target charge pump is connected with the common terminal of the battery 2 and the battery 3 through the first output terminal, and the conversion ratio of the first target charge pump is 3:1. The input end of the second target charge pump is connected with the second output end of the last first target charge pump, the output end of the second target charge pump is connected with the common end of the battery 1 and the battery 2, and the conversion ratio of the second target charge pump is 2:1.

in this embodiment, at least two second target charge pumps of the M second charge pumps 122 are connected in series, and the conversion ratio of the at least two second target charge pumps is set to be the ratio of the output value X of the charge pump connected to the input end of the second target charge pump to the number Y of batteries between the output end of the second target charge pump and the ground end, so that the flexibility of setting the second charge pumps 122 in the bidirectional conversion circuit 120 is further improved.

In some embodiments of the present application, as shown in fig. 1, the power supply circuit 100 further includes: the input end of the step-down charging circuit 140 is connected with a power supply, the output end of the step-down charging circuit 140 is connected to a target common end in M common ends, the target common end is a common end between a target battery and an adjacent battery in N batteries, and the target battery is connected with a grounding end.

In the embodiment of the present application, the conversion ratio of the Buck charging circuit 140 (Buck charge) is n:1. The input end of the step-down charging circuit 140 is connected to a power supply, and the output end of the step-down charging circuit is connected to a target common end of the M common ends, where the target common end is a common end close to the ground end of the M common ends.

Fig. 11 illustrates a schematic diagram of a current flow of charging a power supply circuit according to some embodiments of the present application, and as shown in fig. 11, the power supply circuit 100 can implement normal charging of the battery pack 130 through the step-down charging circuit 140. In the initial stage of controlling the power supply circuit 100 to perform normal charging on the battery pack 130, the second charging circuit is controlled to be turned on, and the second charging circuit includes the step-down charging circuit 140. According to a fifth current value of the second charging device connected to the power supply circuit 100, a current loss value of the power supply circuit 100 system, and N capacity values among the plurality of batteries, a second charging current value of the step-down charging circuit 140 is set, and the step-down charging circuit 140 is controlled to output the second charging current value to charge the battery pack 130, where the second charging current value is a current value at a position of the fifth capacitor C5.

Specifically, the common charger realizes the Buck function through the fifth MOS transistor Q8 and the sixth MOS transistor Q9 in the Buck charging circuit 140, the voltage value after the Buck is the voltage value at the fourth capacitor C4, and the output voltage supplies power to the power supply circuit 100 and charges the battery. At this time, the second charge pump 122 in the bi-directional conversion circuit 120 operates in the 1:2 mode, boosting the voltage V to 2V to charge the series branch of battery 1 and battery 2.

For example, the battery 1 has a capacity of 2000mAH, the battery 2 has a capacity of 2800mAH, the maximum output power of the second charger to which the power supply circuit 100 is connected is 18W (Max 9V/2A), if the current i4+i5 requested to be output by the buck conversion circuit is 2A, and assuming that the current loss value i5=200ma of the power supply circuit 100, the remaining current i4=1.8a at which the battery can be charged. Since the capacity ratio of battery 1 and battery 2 is Cap1/Cap 2=2000 mAH/2800 mah=5/7, and Cap1/Cap 2=i1/i 2, i 1/i2=5/7. At the same time, the current i4=i1+i2=1.8a for charging the battery is set, and the current i1=0.75a for flowing into the battery 1 and the current i2=1.05a for flowing into the battery 2 are set, respectively.

In this embodiment, by providing the step-down charging circuit 140 in the power supply circuit 100, the power supply circuit 100 can select to charge the battery pack 130 through the step-down charging circuit 140 or the first charge pump 110 according to the actual charging requirement. In the process of the power supply circuit 100 performing high-power fast charging on the battery pack 130, the battery pack 130 is charged through the first charge pump 110 and the bidirectional conversion circuit 120, and in the process of the power supply circuit 100 performing low-power charging on the battery pack 130, the voltage-reducing charging circuit 140 is used for charging the battery pack 130, so that the power supply circuit 100 not only supports serial fast charging on a plurality of batteries with different capacities, but also realizes that the power supply circuit 100 can perform serial common charging on a plurality of batteries with different capacities, and both charging modes can ensure that the batteries with different capacities synchronously complete charging.

In some embodiments of the present application, the current output by the power supply flows through the first charge pump 110 and the bidirectional conversion circuit 120 in sequence to supply power to the battery pack 130.

In this embodiment, the power supply circuit 100 includes a first power supply loop, which is a power supply loop from the power source, the first charge pump 110, the bidirectional conversion circuit 120 to the battery pack 130.

Specifically, the battery capacities in the battery pack 130 are different, in the process of fast charging and supplying the battery pack 130 by the power supply circuit 100, the first power supply loop is controlled to be turned on, the current output by the power supply flows through the first charge pump 110 to supply power to the batteries connected with the first charge pump 110 in the battery pack 130, after the current output by the power supply flows through the first charge pump 110, the two output ends of the first charge pump 110 respectively transmit the current to the input end of the battery pack 130 and the input end of the bidirectional conversion circuit 120, the batteries connected with the first charge pump 110 in the battery pack 130 are directly supplied with power by the first charge pump 110, and the rest batteries connected in series are supplied with power by the M second charge pumps in the bidirectional conversion circuit 120, so that the batteries with different capacities in the battery pack 130 can be charged in series, and the batteries with different capacities can be charged in series and synchronously, the flexibility of battery stack design in the electronic equipment is increased, and the overall charging speed of the electronic equipment is improved.

In some embodiments of the present application, the current output by the power supply flows through the buck charging circuit and the bi-directional conversion circuit 120 in sequence to power the battery pack 130.

In this embodiment, the power supply circuit 100 includes a second power supply loop, which is a power supply loop from the power source, the buck charging circuit, the bidirectional converting circuit 120 to the battery pack 130.

Specifically, the battery capacities in the battery pack 130 are different, in the process of fast charging and supplying the battery pack 130 by the power supply circuit 100, the second power supply loop is controlled to be turned on, the current output by the power supply is transmitted to the bidirectional conversion circuit 120 after flowing through the step-down charging circuit, and the batteries in series connection in the battery pack 130 are supplied by the M second charge pumps in the bidirectional conversion circuit 120, so that the batteries with different capacities in the battery pack 130 can be charged in series, and the batteries with different capacities can be charged in series and synchronously, the flexibility of the battery stacking design in the electronic equipment is increased, and the overall charging speed of the electronic equipment is improved.

In the embodiment of the present application, a first power supply loop is formed from the first charge pump 110 and the bidirectional conversion circuit 120 in the power supply circuit 100 to the battery pack 130, and a second power supply loop is formed from the step-down charging circuit and the bidirectional conversion circuit 120 in the power supply circuit 100 to the battery pack 130. The user can select to supply power to the battery pack 130 through the first power supply loop or select to supply power to the battery pack 130 through the second power supply loop by switching the on-off state between the first power supply loop and the second power supply loop in the power supply circuit 100.

Illustratively, during fast charging of the battery pack 130, power is supplied through the first power supply loop, and it is normally important to power the battery pack 130 through the second power supply loop.

In some embodiments of the present application, an electronic device is provided, where the electronic device includes the power supply circuit in any one of the embodiments, so that the beneficial technical effects of the power supply circuit can be achieved, and for avoiding repetition, a detailed description is omitted here.

In some embodiments of the present application, a charging control method is provided, which is applied to the power supply circuit in any of the foregoing embodiments or the electronic device in any of the foregoing embodiments, and fig. 12 is a schematic flow chart of the charging control method according to some embodiments of the present application, as shown in fig. 12, where the charging control method includes:

step 1202, controlling the first charge pump and the bidirectional conversion circuit to be conducted to the battery pack;

step 1204, determining a first current value output by the first charge pump according to the N capacity values corresponding to the N batteries;

step 1206, controlling the first charge pump to output a first current value, so that the first end of the battery pack receives a second current value, and the input end of the bidirectional conversion circuit receives a third current value, wherein the first current value is the sum of the second current value and the third current value;

The bidirectional conversion circuit converts the third current value into a fourth current value and transmits the fourth current value to M common terminals among N batteries.

In this embodiment of the present application, N capacity values are in one-to-one correspondence with N batteries, and N capacity values are the capacities of each battery respectively. The first current value is a current value required to be output by the first charge pump, and the first charge pump charges the battery pack according to the first current value, so that a plurality of batteries in the battery pack can be ensured to be fully charged synchronously.

In this embodiment, when a battery pack in an electronic device starts to be charged, a capacity value of each battery in the battery pack needs to be obtained, where the capacity value is a battery capacity of a corresponding battery, and a first current value output by a first charge pump is calculated based on the battery capacity, and the first current value is controlled to be output by the first charge pump, and the first current value is converted by a bidirectional conversion circuit and then is input to N batteries respectively, so that the N batteries can be simultaneously charged.

As shown in fig. 5, illustratively, when the first charge pump outputs the first current value (i1+i3), the first terminal of the battery pack is caused to receive the second current value (i 1), and the input terminal of the bidirectional conversion circuit is caused to receive the third current value (i 3). The bidirectional conversion circuit converts the third current value (i 3) into a fourth current value (2×i3) and transmits the fourth current value (2×i3) to the common terminal between the battery 1 and the battery 2, thereby synchronously charging the battery 1 and the battery 2.

In this embodiment of the present application, the power supply loop from the first charge pump and the bidirectional conversion circuit in the power supply circuit to the battery pack is controlled to be turned on. The power supply circuit can realize quick charge of the battery pack through the first charge pump and the bidirectional conversion circuit. The first charge pump operates in either the 4:2 or 2:2 mode to charge the series branch of battery 1 and battery 2. Simultaneously, the two second charge pumps work in a 2:1 mode, and the voltage of 2V is reduced to V to charge the battery 2 and power the devices in the electronic equipment, so that the charging and power consumption functions during rapid charging are realized.

In this embodiment, through set up first charge pump between group battery and power to with two output of first charge pump respectively with the input of group battery, and bi-directional conversion circuit's input is connected, supply power to the battery that is connected with first charge pump in the group battery through first charge pump is direct, and M second charge pump supplies power to other batteries of establishing ties, the battery of having realized different capacities in the group battery can establish ties and charge, and the battery of different capacities establishes ties and charge and can be fully charged in step, increased the flexibility that the battery piles up the design in the electronic equipment, improved electronic equipment's whole charge rate.

In some embodiments of the present application, the power supply circuit is connected to the first charging device; according to N capacity values corresponding to N batteries, determining a first current value output by a first charge pump circuit, wherein the first current value comprises: acquiring a fifth current value of the first charging equipment, wherein the fifth current value is the maximum charging current value of the first charging equipment; determining N sixth current values corresponding to the N batteries based on the fifth current value and the N capacity values, wherein the N sixth current values are maximum charging current values of the N batteries; determining a fourth current value output by the bidirectional conversion circuit through N sixth current values; and determining a first current value output by the first charge pump through the fourth current value and the N capacity values.

In this embodiment of the present invention, the first charging device is a device for charging the power supply circuit, the fifth current value is a maximum charging current value supported by the first charging device, and only a sixth current value corresponding to each battery can be determined by the fifth current value and the capacity of each battery among the N batteries, where the sixth current value is a maximum charging current value of the corresponding battery. And calculating a fourth current value required to be output by the bidirectional conversion circuit based on the sixth current value, and further calculating a first current value required to be output by the first charge pump. The electronic equipment can calculate a first current value required to be output by the first charge pump according to the maximum current value of the first charging equipment and the capacity value of each battery in the battery pack, and control the first charge pump to output the first current value, so that N batteries with different capacities in the battery pack can be ensured to be synchronously full.

As shown in fig. 5, for example, the battery 1 has a capacity of 2000mAH, the battery 2 has a capacity of 2800mAH, the maximum output power of the charger is 120W (Max 20V/6A), that is, the fifth current value of the first charging device is 6A, the maximum charging current of the battery 1 is 2×6a×2000/(2000+2800) =5a, and the charging rate of the battery 1 is at least 5/2=2.5c. The maximum charging current of the battery 2 is 7A in the same manner, that is, two sixth current values corresponding to the two batteries are 5A and 7A, and the charging rate of the battery 2 is at least 7/2.8=2.5C.

The bidirectional conversion circuit outputs a current 2×i3=2a flowing into the battery 2. From the capacity ratio of the battery 1 and the battery 2, the current flowing into the battery 1 is calculated as follows:

i1 = (2×i3) ×cap 1/(Cap 2-Cap 1) =2a×2000/(2800-2000) =5a, then the first current value corresponding to the request of the first charge pump output is i1+i3=5a+1a=6a. It can be seen that the currents flowing into the battery 1 and the battery 2 are 5A and 7A, respectively.

According to the embodiment of the application, according to the fifth current value of the first charging device and the capacity value of the battery in the battery pack, the current value output by the bidirectional conversion circuit can be calculated, the current value required to be output by the first charge pump is calculated based on the current value output by the bidirectional conversion circuit, the stability of charging the battery pack in the power supply circuit is ensured, and a plurality of batteries in the battery pack can be fully charged synchronously.

In some embodiments of the present application, determining the first current value of the first charge pump output from the fourth current value and the N capacity values comprises: according to the N capacity values, the first current loss value and the fourth current value, determining a seventh current value of a target battery in the N batteries, wherein the seventh current value is a charging current value of the target battery, and the target battery is a battery connected with a first charge pump in the N batteries, and the first current loss value comprises the current loss values of the first charge pump and a bidirectional conversion circuit; and determining a fourth current value according to the seventh current value and the fourth current value.

In this embodiment of the present application, the seventh current value is a maximum charging current value of the target battery, and the current loss value is a current value lost in a charging process of the electronic device system.

For example, the battery 1 has a capacity of 2000mAH, the battery 2 has a capacity of 2800mAH, the maximum output power of the charger is 120W (Max 20V/6A), the maximum charging current of the battery 1 is 2×6a×2000/(2000+2800) =5a, and the charging rate of the battery 1 is at least 5/2=2.5c. Similarly, the maximum charging current of the battery 2 is 7A, and the charging rate of the battery 2 is at least 7/2.8=2.5C. Assuming that the current loss value of the electronic device is i4=200ma, when the bidirectional first charge pump output current 2×i3=2a is first requested, the first charge pump output current 2×i3-i4 flowing into the battery 2 is (2-0.2) a=1.8a. From the capacity ratio of battery 1 and battery 2, the current i1= (2×i3-i 4) ×cap 1/(Cap 2-Cap 1) =1.8a×i1+i3=4.5a+1a=5.5a flowing into battery 1 is calculated. The currents i1 and i2 flowing into the battery 1 and the battery 2 are respectively 4.5A and 6.3A, and the ratio Cap1/Cap 2=i1/i 2 of capacity is satisfied, so that the two batteries can be simultaneously charged.

In this embodiment, through set up first charge pump between group battery and power to with two output of first charge pump respectively with the input of group battery, and bi-directional conversion circuit's input is connected, directly supply power in the group battery through first charge pump, and M second charge pump is supplied power to the battery of other series connection, the battery that has realized different capacity in the group battery can be charged in series, and the battery series connection of different capacity charges can be full of in step, increased the flexibility of battery stack design in the electronic equipment, improved electronic equipment's whole charge rate.

In some embodiments of the present application, the electronic device further comprises: the input end of the step-down charging circuit is connected with a power supply, the output end of the step-down charging circuit is connected to a target common end in M common ends, the target common end is a common end close to a grounding end in M common ends, and the electronic equipment is connected with second charging equipment;

the charge control method further includes: the first charge pump and the bidirectional conversion circuit are controlled to be disconnected from the battery pack, and the step-down charging circuit and the bidirectional conversion circuit are controlled to be connected with the battery pack;

Determining a ninth current value output by the step-down charging circuit according to an eighth current value, a second current loss value and N capacity values of the second charging device, wherein the eighth current value is a maximum charging current value of the second charging device, and the second current loss value comprises current loss values of the step-down charging circuit and the bidirectional conversion circuit; controlling the step-down charging circuit to output a ninth current value;

the ninth current value is converted by the bidirectional conversion circuit and then transmitted to the first end of the battery pack and M public ends among N batteries, and the sum of the current value of the first end of the battery pack and the current value at the M public ends is the ninth current value.

In the embodiment of the application, the electronic equipment can realize common charging of the battery pack through the step-down charging circuit. And in the starting stage of the control electronic equipment for carrying out common charging on the battery pack, controlling the second charging loop to be conducted, wherein the second charging loop comprises a step-down charging circuit. And setting a ninth current value of the step-down charging circuit according to the eighth current value of the second charging device connected with the electronic device, the second current loss value of the electronic device system and N capacity values among the batteries, and controlling the step-down charging circuit to output the ninth current value so as to charge the battery pack.

In this embodiment, when the battery pack in the electronic device starts to be charged, a capacity value and a second current loss value of each battery in the battery pack need to be obtained, where the capacity value is a battery capacity of a corresponding battery, and a ninth current value output by the step-down charging circuit is calculated based on the battery capacity, and the step-down charging circuit is controlled to output the ninth current value, and the first current value is converted by the bidirectional conversion circuit and then is input to N batteries respectively, so that the N batteries can be simultaneously charged.

Specifically, the common charger realizes the Buck step-down function through a fifth MOS tube and a sixth MOS tube in the step-down charging circuit, and outputs voltage to supply power to the electronic equipment and charge the battery. At this time, the second charge pump in the bi-directional conversion circuit operates in the 1:2 mode, boosting the voltage V to 2V to charge the series branch of battery 1 and battery 2.

As shown in fig. 11, by way of example, the battery 1 has a capacity of 2000mAH, the battery 2 has a capacity of 2800mAH, the maximum output power of a second charger connected to the electronic device is 18W (Max 9V/2A), and if the current i4+i5 requested to be output by the buck conversion circuit is 2A, assuming that the second current loss value i5=200ma of the electronic device, the remaining current i4=1.8a at which the battery can be charged. Since the capacity ratio of battery 1 and battery 2 is Cap1/Cap 2=2000 mAH/2800 mah=5/7, and Cap1/Cap 2=i1/i 2, i 1/i2=5/7. At the same time, the current i4=i1+i2=1.8a for charging the battery is set, and the current i1=0.75a for flowing into the battery 1 and the current i2=1.05a for flowing into the battery 2 are set, respectively.

In this embodiment of the present application, by setting a step-down charging circuit in an electronic device, the electronic device may select to charge a battery pack through the step-down charging circuit or the first charge pump according to an actual requirement of charging. The battery pack is charged through the first charge pump and the bidirectional conversion circuit in the process of high-power quick charging of the battery pack by the electronic equipment, and is charged through the step-down charging circuit in the process of low-power charging of the battery pack by the electronic equipment, so that the electronic equipment can support serial quick charging of a plurality of batteries with different capacities, serial common charging of the batteries with different capacities by the electronic equipment is realized, and the batteries with different capacities can be synchronously charged by the two charging modes.

According to the charging control method provided by the embodiment of the application, the execution main body can be a charging control device. In the embodiment of the present application, a method for executing charge control by a charge control device is taken as an example, and the charge control device provided in the embodiment of the present application is described.

In some embodiments of the present application, a charging control device is provided, which is applied to the electronic apparatus in any of the above embodiments, fig. 13 shows a block diagram of a charging control device according to some embodiments of the present application, and as shown in fig. 13, a charging control device 1300 includes:

The control module 1302 is configured to control the first charge pump and the bidirectional conversion circuit to be conducted to the battery pack;

a determining module 1304, configured to determine a first current value output by the first charge pump according to N capacity values corresponding to the N batteries;

the control module 1302 is configured to control the first charge pump to output a first current value, so that the first end of the battery pack receives the second current value, and the input end of the bidirectional conversion circuit receives a third current value, where the first current value is a sum of the second current value and the third current value;

In some embodiments of the present application, the power supply circuit is connected to the first charging device; the charge control device 1300 further includes:

the acquisition module is used for acquiring a fifth current value of the first charging equipment, wherein the fifth current value is the maximum charging current value of the first charging equipment;

a determining module 1304, configured to determine N sixth current values corresponding to the N batteries based on the fifth current value and the N capacity values, where the N sixth current values are maximum charging current values of the N batteries;

a determining module 1304, configured to determine a fourth current value output by the bidirectional conversion circuit through N sixth current values;

a determining module 1304 is configured to determine a first current value output by the first charge pump by the fourth current value and the N capacity values.

In some embodiments of the present application, a determining module 1304 is configured to determine a seventh current value of a target battery among the N batteries according to the N capacity values, the first current loss value and the fourth current value, where the seventh current value is a charging current value of the target battery, and the target battery is a battery among the N batteries connected to the first charge pump, and the first current loss value includes a current loss value of the first charge pump and the bidirectional conversion circuit;

A determining module 1304 for determining a fourth current value based on the seventh current value and the fourth current value.

the control module 1302 is configured to control the first charge pump and the bidirectional conversion circuit to be disconnected from the battery pack, and control the buck charging circuit and the bidirectional conversion circuit to be connected to the battery pack;

A determining module 1304, configured to determine a ninth current value output by the buck charging circuit according to an eighth current value of the second charging device, a second current loss value and N capacity values, where the eighth current value is a maximum charging current value of the second charging device, and the second current loss value includes current loss values of the buck charging circuit and the bidirectional conversion circuit;

a control module 1302 for controlling the buck charging circuit to output a ninth current value;

The charging control device in the embodiment of the application may be an electronic device, or may be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the electronic device may be a mobile phone, tablet computer, notebook computer, palm computer, vehicle-mounted electronic device, mobile internet appliance (Mobile Internet Device, MID), augmented reality (augmented reality, AR)/Virtual Reality (VR) device, robot, wearable device, ultra-mobile personal computer, UMPC, netbook or personal digital assistant (personal digital assistant, PDA), etc., but may also be a server, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (TV), teller machine or self-service machine, etc., and the embodiments of the present application are not limited in particular.

The charging control device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

The charging control device provided in the embodiment of the present application can implement each process implemented by the foregoing method embodiment, and in order to avoid repetition, details are not repeated here.

Optionally, an electronic device is further provided in the embodiments of the present application, fig. 14 shows a block diagram of a structure of an electronic device according to some embodiments of the present application, as shown in fig. 14, where the electronic device 1400 includes a processor 1402, a memory 1404, and a program or an instruction stored in the memory 1404 and capable of running on the processor 1402, where the program or the instruction is executed by the processor 1402 to implement each process of the foregoing method embodiments, and the technical effects are the same, and are not repeated herein.

The electronic device in the embodiment of the application includes the mobile electronic device and the non-mobile electronic device.

The electronic device 1500 includes, but is not limited to: radio frequency unit 1501, network module 1502, audio output unit 1503, input unit 1504, sensor 1505, display unit 1506, user input unit 1507, interface unit 1508, memory 1509, and processor 1510.

Those skilled in the art will appreciate that the electronic device 1500 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 1510 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The electronic device structure shown in fig. 15 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown in the drawings, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

Wherein, the processor 1510 is configured to control the first charge pump and the bidirectional conversion circuit to be conducted to the battery pack;

a processor 1510 configured to determine a first current value output by the first charge pump according to N capacity values corresponding to the N batteries;

a processor 1510, configured to control the first charge pump to output a first current value, so that the first end of the battery pack receives the second current value, and the input end of the bidirectional conversion circuit receives a third current value, where the first current value is a sum of the second current value and the third current value;

In some embodiments of the present application, the power supply circuit is connected to the first charging device; a processor 1510 configured to obtain a fifth current value of the first charging device, the fifth current value being a maximum charging current value of the first charging device;

a processor 1510 configured to determine N sixth current values corresponding to the N batteries, based on the fifth current value and the N capacity values, the N sixth current values being maximum charging current values of the N batteries;

a processor 1510 for determining a fourth current value outputted from the bidirectional conversion circuit by the N sixth current values;

The processor 1510 is configured to determine a first current value output by the first charge pump through the fourth current value and the N capacity values.

In some embodiments of the present application, the processor 1510 is configured to determine a seventh current value of a target battery of the N batteries according to the N capacity values, the first current loss value and the fourth current value, where the seventh current value is a charging current value of the target battery, and the target battery is a battery of the N batteries connected to the first charge pump, and the first current loss value includes a current loss value of the first charge pump and the bidirectional conversion circuit;

the processor 1510 is configured to determine a fourth current value according to the seventh current value and the fourth current value.

a processor 1510 for controlling the first charge pump, the bidirectional conversion circuit to be disconnected from the battery pack, and controlling the buck charging circuit, the bidirectional conversion circuit to be connected to the battery pack;

a processor 1510, configured to determine a ninth current value output by the buck charging circuit according to an eighth current value of the second charging device, a second current loss value, and N capacity values, where the eighth current value is a maximum charging current value of the second charging device, and the second current loss value includes current loss values of the buck charging circuit and the bidirectional conversion circuit;

a processor 1510 for controlling the step-down charging circuit to output a ninth current value;

It should be appreciated that in embodiments of the present application, the input unit 1504 may include a graphics processor (Graphics Processing Unit, GPU) 15041 and a microphone 15042, the graphics processor 15041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1506 may include a display panel 15061, and the display panel 15061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1507 includes at least one of a touch panel 15071 and other input devices 15072. The touch panel 15071 is also referred to as a touch screen. The touch panel 15071 may include two parts, a touch detection device and a touch controller. Other input devices 15072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

The memory 1509 may be used to store software programs as well as various data. The memory 1509 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1509 may include volatile memory or nonvolatile memory, or the memory 1509 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 1509 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 1510 may include one or more processing units; optionally, the processor 1510 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1510.

The embodiment of the application further provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above method embodiment, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

The processor is a processor in the electronic device in the above embodiment. Readable storage media include computer readable storage media such as Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic or optical disks, and the like.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions, the processes of the above method embodiment are realized, the same technical effects can be achieved, and in order to avoid repetition, the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.

The embodiments of the present application provide a computer program product, which is stored in a storage medium, and the program product is executed by at least one processor to implement the respective processes of the above method embodiments, and achieve the same technical effects, and are not repeated herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the methods of the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A power supply circuit, comprising:

the input end of the first charge pump is connected with a power supply;

the first end of the battery pack is connected with the first output end of the first charge pump, the second end of the battery pack is grounded, the battery pack comprises N batteries which are connected in series, and N is an integer larger than 1;

the input end of the bidirectional conversion circuit is connected with the second output end of the first charge pump, the bidirectional conversion circuit comprises M second charge pumps, the output ends of the M second charge pumps are respectively connected with M public ends among the N batteries, and the bidirectional conversion circuit is used for boosting or reducing the voltage on a line, wherein M=N-1.

2. The power supply circuit of claim 1, wherein the ratio of the input value to the output value of the first charge pump is 2 n:n.

3. The power supply circuit of claim 1, wherein an input of a first target charge pump of the M second charge pumps is connected to a second output of the first charge pump;

the ratio of the input value to the output value of the first target charge pump is N: q, Q is the number of the batteries between the output end and the grounding end of the first target charge pump.

4. The power supply circuit of claim 1, wherein at least two second target charge pumps of the M second charge pumps are connected in series with each other;

the ratio of the input value to the output value of the second target charge pump is X:Y, X is the output value of the charge pump connected with the input end of the second target charge pump, and Y is the number of the batteries between the output end of the second target charge pump and the grounding end.

5. The power supply circuit according to any one of claims 1 to 4, characterized by further comprising:

the input end of the step-down charging circuit is connected with the power supply, the output end of the step-down charging circuit is connected to a target common end in the M common ends, the target common end is a common end between a target battery in the N batteries and an adjacent battery, and the target battery is connected with the grounding end.

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

the current output by the power supply sequentially flows through the first charge pump and the bidirectional conversion circuit to supply power to the battery pack; or alternatively

And the current output by the power supply sequentially flows through the step-down charging circuit and the bidirectional conversion circuit to supply power to the battery pack.

7. An electronic device comprising the power supply circuit according to any one of claims 1 to 6.

8. A charge control method applied to the power supply circuit as claimed in any one of claims 1 to 6 or to the electronic device as claimed in claim 7, characterized in that the charge control method comprises:

controlling the first charge pump and the bidirectional conversion circuit to be conducted to the battery pack;

determining a first current value output by the first charge pump according to N capacity values corresponding to the N batteries;

controlling the first charge pump to output a first current value so that a first end of the battery pack receives a second current value and an input end of the bidirectional conversion circuit receives a third current value, wherein the first current value is the sum of the second current value and the third current value;

the bidirectional conversion circuit converts the third current value into a fourth current value and transmits the fourth current value to M common terminals among the N batteries.

9. The charge control method according to claim 8, wherein the power supply circuit is connected to a first charging device;

the determining, according to the N capacity values corresponding to the N batteries, a first current value output by the first charge pump circuit includes:

Acquiring a fifth current value of the first charging device, wherein the fifth current value is a maximum charging current value of the first charging device;

determining N sixth current values corresponding to the N batteries based on the fifth current value and the N capacity values, the N sixth current values being maximum charging current values of the N batteries;

determining the fourth current value output by the bidirectional conversion circuit through the N sixth current values;

and determining the first current value output by the first charge pump through the fourth current value and the N capacity values.

10. The charge control method according to claim 9, wherein the determining the first current value output by the first charge pump by the fourth current value and the N capacity values includes:

determining a seventh current value of a target battery in the N batteries according to the N capacity values, a first current loss value and the fourth current value, wherein the seventh current value is a charging current value of the target battery, the target battery is a battery connected with the first charge pump in the N batteries, and the first current loss value comprises current loss values of the first charge pump and the bidirectional conversion circuit;

And determining the first current value according to the seventh current value and the fourth current value.

11. The charge control method according to any one of claims 8 to 10, characterized in that the electronic device further includes: the input end of the step-down charging circuit is connected with the power supply, the output end of the step-down charging circuit is connected to a target common end in the M common ends, the target common end is a common end close to the grounding end in the M common ends, and the electronic equipment is connected with the second charging equipment;

the charge control method further includes:

controlling the first charge pump and the bidirectional conversion circuit to be disconnected from the battery pack, and controlling the step-down charging circuit and the bidirectional conversion circuit to be connected to the battery pack;

determining a ninth current value output by the step-down charging circuit according to an eighth current value, a second current loss value and the N capacity values of the second charging device, wherein the eighth current value is a maximum charging current value of the second charging device, and the second current loss value comprises current loss values of the step-down charging circuit and the bidirectional conversion circuit;

Controlling the step-down charging circuit to output the ninth current value;

and the ninth current value is converted by the bidirectional conversion circuit and then transmitted to the first end of the battery pack, and M public ends among the N batteries, wherein the sum of the current value of the first end of the battery pack and the current value at the M public ends is the ninth current value.