Charging control method and device, electronic equipment and storage medium

Abstract

The invention relates to the technical field of quick charging of electronic equipment, and particularly provides a charging control method and device, electronic equipment and a storage medium. The charging control method comprises the following steps: detecting power supply voltages output to a battery module by charge pump circuits in a charging process, and adjusting charging parameters of the charge pump circuits according to a voltage difference of the power supply voltages among the charge pump circuits until the voltage difference is converged to a preset voltage difference range. In the embodiment of the invention, in the fast charging process of the electronic equipment, the charging parameters of the charge pump circuits are dynamically adjusted in real time based on the voltage difference of the power supply voltages of the charge pump circuits, so that the voltage difference is converged to a relatively small voltage difference range, the power supply voltages of the charge pump circuits are basically kept consistent, the efficiency of the charge pumps is improved, and the cost is reduced. And the fast charging efficiency of the electronic equipment is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic device fast charging, and in particular to a charging control method, device, electronic device and storage medium. Background Art

[0002] With the development of fast charging technology, the charging power of consumer electronic devices is getting higher and higher, and the time required to fully charge is getting shorter and shorter. In order to achieve higher power charging, multiple charge pump (CP) parallel circuits are increasingly used in electronic devices. For example, some mobile phones use dual charge pumps, 3 charge pumps or even more charge pumps in parallel to achieve fast charging of more than 100W.

[0003] However, in the multi-charge pump parallel circuit in the related art, the charge pump performance is difficult to fully exert, resulting in limited charging efficiency. Summary of the invention

[0004] In order to improve the fast charging efficiency of electronic devices, the embodiments of the present disclosure provide a charging control method, device, electronic device and storage medium.

[0005] In a first aspect, an embodiment of the present disclosure provides a charging control method, comprising:

[0006] During the charging process, detecting the supply voltage outputted by the charge pump circuit to the battery module of the electronic device; the charging circuit of the electronic device comprises at least two charge pump circuits, and the at least two charge pump circuits are respectively connected to the battery module;

[0007] According to the voltage difference of the supply voltage between the charge pump circuits, the charging parameters of the charge pump circuits are adjusted until the voltage difference converges to a preset voltage difference range.

[0008] In some embodiments, the charging parameter includes an operating mode of the charge pump circuit, and the operating mode indicates an input-output ratio of the charge pump circuit; and adjusting the charging parameter of the charge pump circuit according to a voltage difference of a power supply voltage between each charge pump circuit includes:

[0009] Determining a voltage difference range corresponding to the voltage difference according to the voltage difference of the power supply voltages between the charge pump circuits;

[0010] Each charge pump circuit is configured to operate in a corresponding operating mode according to the voltage difference range.

[0011] In some implementations, configuring each charge pump circuit to operate in a corresponding operating mode according to the voltage difference range includes:

[0012] Determining a target operating mode corresponding to the pressure difference range according to the pressure difference range and a pre-configured corresponding relationship; the corresponding relationship represents a corresponding relationship between the pressure difference range and the operating mode of the charge pump circuit;

[0013] Each charge pump circuit is configured to operate in the target operation mode.

[0014] In some embodiments, the charging parameter includes an input voltage of a charge pump circuit; and adjusting the charging parameter of the charge pump circuit according to a voltage difference between supply voltages of the charge pump circuits includes:

[0015] Determining a maximum supply voltage according to supply voltages of various charge pump circuits;

[0016] For each charge pump circuit, the input voltage of the charge pump circuit is adjusted according to the difference between the corresponding power supply voltage and the maximum power supply voltage.

[0017] In some implementations, for each charge pump circuit, adjusting the input voltage of the charge pump circuit according to the difference between the corresponding power supply voltage and the maximum power supply voltage includes:

[0018] For each charge pump circuit, determining an input voltage compensation value of the charge pump circuit according to its corresponding working mode and a difference between a power supply voltage and the maximum power supply voltage;

[0019] Determining a target input voltage of the charge pump circuit according to the input voltage compensation value and a current input voltage of the charge pump circuit;

[0020] The target input voltage is sent to the charger to adjust the input voltage of the charge pump circuit to the target input voltage.

[0021] In some implementations, adjusting the charging parameters of the charge pump circuits according to the voltage difference of the supply voltages between the charge pump circuits includes:

[0022] Obtaining the current cell voltage of the battery module;

[0023] In response to the supply voltages of the charge pump circuits being greater than the cell voltage, the process of adjusting the charging parameters of the charge pump circuits according to the voltage differences of the supply voltages between the charge pump circuits is performed.

[0024] In some embodiments, the charging control method described in the present disclosure further includes:

[0025] In response to the electronic device establishing a charging connection with the charger, and the cell voltage of the battery module being less than the power-on voltage, controlling the BUCK circuit included in the charging circuit to charge the battery module;

[0026] In response to the cell voltage being greater than or equal to the power-on voltage, establishing a fast charging connection between the electronic device and the charger, and controlling each charge pump circuit included in the charging circuit to charge the battery module, or controlling each charge pump circuit included in the charging circuit and the BUCK circuit to charge the battery module;

[0027] In response to the cell voltage reaching the charge cut-off voltage, the BUCK circuit is controlled to perform constant voltage charging on the battery module until the cell current reaches the charge cut-off current.

[0028] In some embodiments, the charging circuit of the electronic device includes a BUCK circuit, a first charge pump circuit, and a second charge pump circuit connected in parallel, and the BUCK circuit, the first charge pump circuit, and the second charge pump circuit are respectively connected to the battery module.

[0029] In a second aspect, the present disclosure provides a charging control device, comprising:

[0030] A voltage detection module is configured to detect the supply voltage output by the charge pump circuit to the battery module of the electronic device during the charging process; the charging circuit of the electronic device includes at least two charge pump circuits, and the at least two charge pump circuits are respectively connected to the battery module;

[0031] The parameter adjustment module is configured to adjust the charging parameters of the charge pump circuit according to the voltage difference of the supply voltage between the charge pump circuits until the voltage difference converges to a preset voltage difference range.

[0032] In some implementations, the charging parameter includes an operating mode of a charge pump circuit, wherein the operating mode represents an input-output ratio of the charge pump circuit; and the parameter adjustment module is configured to:

[0033] Determining a voltage difference range corresponding to the voltage difference according to the voltage difference of the power supply voltages between the charge pump circuits;

[0034] Each charge pump circuit is configured to operate in a corresponding operating mode according to the voltage difference range.

[0035] In some embodiments, the parameter adjustment module is configured to:

[0036] Determining a target operating mode corresponding to the pressure difference range according to the pressure difference range and a pre-configured corresponding relationship; the corresponding relationship represents a corresponding relationship between the pressure difference range and the operating mode of the charge pump circuit;

[0037] Each charge pump circuit is configured to operate in the target operation mode.

[0038] In some implementations, the charging parameter includes an input voltage of a charge pump circuit; and the parameter adjustment module is configured to:

[0039] Determining a maximum supply voltage according to supply voltages of various charge pump circuits;

[0040] For each charge pump circuit, the input voltage of the charge pump circuit is adjusted according to the difference between the corresponding power supply voltage and the maximum power supply voltage.

[0041] In some embodiments, the parameter adjustment module is configured to:

[0042] For each charge pump circuit, determining an input voltage compensation value of the charge pump circuit according to its corresponding working mode and a difference between a power supply voltage and the maximum power supply voltage;

[0043] Determining a target input voltage of the charge pump circuit according to the input voltage compensation value and a current input voltage of the charge pump circuit;

[0044] The target input voltage is sent to the charger to adjust the input voltage of the charge pump circuit to the target input voltage.

[0045] In some embodiments, the parameter adjustment module is configured to:

[0046] Obtaining the current cell voltage of the battery module;

[0047] In response to the supply voltages of the charge pump circuits being greater than the cell voltage, the process of adjusting the charging parameters of the charge pump circuits according to the voltage differences of the supply voltages between the charge pump circuits is performed.

[0048] In some embodiments, the charging circuit of the electronic device includes a BUCK circuit, a first charge pump circuit, and a second charge pump circuit connected in parallel, and the BUCK circuit, the first charge pump circuit, and the second charge pump circuit are respectively connected to the battery module.

[0049] In a third aspect, an embodiment of the present disclosure provides an electronic device, including:

[0050] A battery module and a charging circuit, wherein the charging circuit comprises at least two charge pump circuits, and the at least two charge pump circuits are respectively connected to the battery module;

[0051] The controller comprises a processor and a memory, wherein the memory stores computer instructions, and the computer instructions are used to enable the processor to execute the method described in any embodiment of the first aspect.

[0052] In a fourth aspect, an embodiment of the present disclosure provides a storage medium storing computer instructions, wherein the computer instructions are used to enable a computer to execute the method according to any embodiment of the first aspect.

[0053] The charging control method of the disclosed embodiment includes, during the charging process, detecting the supply voltage outputted by the charge pump circuit to the battery module, and adjusting the charging parameters of the charge pump circuit according to the voltage difference of the supply voltages between the various charge pump circuits, until the voltage difference converges to a preset voltage difference range. In the disclosed embodiment, during the fast charging process of the electronic device, the charging parameters of the charge pump circuit are dynamically adjusted in real time based on the voltage difference of the supply voltage of the charge pump circuit, so as to converge the voltage difference to a smaller voltage difference range, so that the supply voltages of the various charge pump circuits remain basically consistent, thereby improving the charge pump efficiency, and further improving the fast charging efficiency of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the specific embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0055] Figure 1 It is a structural diagram of a charging circuit of an electronic device according to some embodiments of the present disclosure.

[0056] Figure 2 is a flowchart of a charging control method according to some embodiments of the present disclosure.

[0057] Figure 3 is a flowchart of a charging control method according to some embodiments of the present disclosure.

[0058] Figure 4 is a flowchart of a charging control method according to some embodiments of the present disclosure.

[0059] Figure 5 is a flowchart of a charging control method according to some embodiments of the present disclosure.

[0060] Figure 6 is a flowchart of a charging control method according to some embodiments of the present disclosure.

[0061] Figure 7 is a flowchart of a charging control method according to some embodiments of the present disclosure.

[0062] Figure 8 It is a structural block diagram of a charging control device according to some embodiments of the present disclosure.

[0063] Fig. 9 It is a structural block diagram of an electronic device according to some implementations of the present disclosure. DETAILED DESCRIPTION

[0064] The technical solution of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described implementation is a part of the implementation of the present disclosure, rather than all the implementations. Based on the implementation in the present disclosure, all other implementations obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure. In addition, the technical features involved in the different implementations of the present disclosure described below can be combined with each other as long as they do not conflict with each other.

[0065] With the development of fast charging technology, the charging power of consumer electronic devices has gradually increased from 20W and 40W to 80W, 100W and even 120W. The time required for full charging has also been gradually shortened from 1 hour to more than ten minutes, greatly facilitating the user experience.

[0066] Charge Pump (CP) is a DC / DC converter circuit that uses capacitors as energy storage elements and controls the voltage of capacitors by controlling the on and off of switching devices to achieve a variety of buck-boost working modes. For example, the common working modes of buck charge pumps include 4:1, 2:1, etc. Taking the 2:1 working mode as an example, it means that the ratio of the input voltage to the output voltage of the charge pump is 2:1, and the ratio of the input current to the output current is 1:2. The structure of the charge pump circuit is very simple, and the transformation efficiency can reach 90% to 95%. Therefore, it is widely used in the charging circuit of consumer electronic devices to achieve high-power, high-efficiency fast charging circuits.

[0067] In related technologies, in order to achieve fast charging with a relatively high power, it is often necessary to use multiple charge pump parallel circuits. For example, for mobile phones that support fast charging with a power of more than 40W, it is often necessary to use a dual charge pump parallel circuit; for mobile phones that support fast charging with a power of more than 80W, it is often necessary to use a 3-charge pump parallel circuit; for mobile phones that support fast charging with a higher power, it is often necessary to integrate a larger number of charge pump parallel circuits to achieve fast charging.

[0068] For a multi-charge pump parallel circuit, when the electronic device successfully shakes hands with the charging adapter on the fast charging protocol and starts fast charging, multiple charge pumps work together in a set working mode, such as working in a 2:1 working mode at the same time, and a parallel circuit is used to improve the charging power and efficiency.

[0069] However, research has found that the charging efficiency of multi-charge pump parallel circuits is difficult to achieve expected results, especially in the high current constant current stage. The actual charging efficiency is significantly different from the theoretical value, resulting in limited fast charging efficiency and extended actual charging time.

[0070] In this regard, the inventors of this case further studied and found that this is because under ideal conditions, the power supply voltage (Pack voltage) reaching the battery module from each charge pump branch should be consistent, that is, each charge pump circuit operates in a standard operating mode, for example, each charge pump operates in a standard 2:1 or 4:1 operating mode.

[0071] However, in reality, it is difficult to achieve consistent impedance matching on each charge pump parallel branch, so the power loss of different charge pump parallel branches is also different, resulting in differences in the supply voltage output by each charge pump to the battery module, especially in the high current charging stage. According to the heat loss law Q = I 2 As can be seen from R, the greater the current, the greater the power loss, and thus the greater the difference in the supply voltage output by different charge pumps to the battery module. Due to the difference in charge pump supply voltage, each charge pump cannot work in the standard 2:1 or 4:1 working mode, so the performance of multiple charge pumps in parallel is difficult to play, resulting in reduced charge pump efficiency and thus extended charging time.

[0072] Based on the defects existing in the above-mentioned related technologies, the embodiments of the present disclosure provide a charging control method, device, electronic device and storage medium, which aim to optimize the charging control of a multi-charge pump parallel circuit, dynamically adjust the charging parameters of each charge pump during the fast charging process, so that the power supply voltage output by each charge pump to the battery module converges to be consistent, thereby improving the charge pump efficiency and further improving the fast charging efficiency.

[0073] Figure 1 The schematic diagram of the charging circuit of the electronic device in some embodiments of the present disclosure is shown below. Figure 1 The examples illustrate the application scenarios of the disclosed method.

[0074] exist Figure 1 In the example, the electronic device is a smartphone, and the charging circuit of the electronic device is a dual charge pump parallel circuit. Of course, those skilled in the art will appreciate that the electronic device is not limited to smartphones, and the charging circuit is not limited to Figure 1 The exemplary dual charge pump parallel circuit may also be a parallel circuit of, for example, 3 charge pumps, 4 charge pumps or even a larger number of charge pumps. The principles are the same and will not be elaborated in the present disclosure.

[0075] like Figure 1 As shown, the charging circuit in the smart phone mainly includes three parts: a sub-board 100, a main board 200 and a battery module 300.

[0076] The sub-board 100 refers to a PCB (Printed Circuit Board) small board arranged at the bottom of the mobile phone. The sub-board 100 is provided with a charging interface 110, and the charging interface 110 is used to be pluggable and connected to an external charger. The charging interface 110 can be any interface type suitable for implementation, such as a USB (Universal Serial Bus) interface, a MicroUSB interface, a Type-C interface, etc., and the present disclosure does not limit this.

[0077] The mainboard 200 refers to the main PCB board of the electronic device, on which various circuit structures and electrical components are integrated to realize various functions of the electronic device. In the embodiment of the present disclosure, the sub-board 100 and the mainboard 200 are detachably electrically connected through a BTB (Board To Board) connector. That is, a sub-board BTB connector 120 is provided on the sub-board 100, and a mainboard BTB connector 210 is provided on the mainboard 200. The sub-board BTB connector 120 and the mainboard BTB connector 210 can be plugged and connected, thereby realizing the electrical connection between the sub-board 100 and the mainboard 200.

[0078] In the disclosed embodiment, the mainboard 200 includes a control circuit 220 , a protocol chip 230 and a power management chip 240 .

[0079] The control circuit 220 is also the main control chip of the electronic device, for example, it can be a SoC (System of Chip), a CPU (Central Processing Unit) chip, etc. The control circuit 220 may include one or more processing cores to execute one or more method steps described below in the present disclosure to implement the process of the charging control method of the present disclosure.

[0080] The protocol chip 230 refers to a circuit chip used to interact with the charger for the fast charging protocol. It can be understood that when the electronic device establishes a fast charging connection with the charger, the two need to interact with the fast charging protocol. Only after the protocol handshake is successful can the fast charging be established according to the charging current and voltage specified in the protocol. The fast charging protocol can be a public fast charging protocol or a private fast charging protocol developed by various manufacturers. This disclosure does not limit this. The public fast charging protocol can include, for example, the PD (Power Delivery) protocol, the QC (Quick Charge) protocol, and the like.

[0081] The power management chip 240 is also called a PMIC (Power Management Integrated Circuit) chip, which is used to manage the power system in the electronic device and can provide various types of voltage outputs to achieve battery charging management, battery monitoring, etc.

[0082] exist Figure 1 In the example, the charging circuit of the electronic device includes a BUCK circuit 251, a first charge pump circuit 252 and a second charge pump circuit 253. The BUCK circuit 251, the first charge pump circuit 252 and the second charge pump circuit 253 are connected in parallel, and their input ends are connected to the charging interface 110 through the motherboard BTB connector 210, so that when the charger is inserted into the charging interface 110, the BUCK circuit 251, the first charge pump circuit 252 and the second charge pump circuit 253 can be powered at the same time.

[0083] The BUCK circuit 251 is a low-power transformer circuit, which is mainly used to output low-power, low-current power. For example, it can provide a system power supply Vsys to power the electronic device system, and can also charge the battery module 300 through the first connector 261 during low-power charging.

[0084] The first connector 261 and the second connector 262 are two BTB connectors provided on the mainboard 200, respectively, for connecting two FPC (Flexible Printed Circuit) connectors of the battery module 300. The output end of the first charge pump circuit 252 is connected to the first connector 261, and the output end of the second charge pump circuit 253 is connected to the second connector 262.

[0085] The battery module 300 is a battery pack, which includes a battery cell 310 and a battery protection board 320. The battery cell 310 can be a single cell or a multi-cell structure, which is not limited by the present disclosure. The battery protection board 320 is used to perform battery cell monitoring and overheat protection on the battery cell 310. The first FPC connector 331 is used to be pluggable and connected to the first connector 261, and the second FPC connector 332 is used to be pluggable and connected to the second connector 262.

[0086] In this example, the BUCK circuit 251, the first charge pump circuit 252 and the second charge pump circuit 253 are arranged in parallel to reduce the path impedance, minimize the path loss and improve the electrical efficiency. Figure 1 The functional modules shown can be set separately, which is more friendly to the motherboard routing and has higher flexibility.

[0087] exist Figure 1 Based on the exemplary charging circuit structure, the working principles of some charging scenarios of electronic devices are described below.

[0088] For scenarios where the electronic device and the charger are charged at low power, for example, the battery is exhausted and in a dead battery activation state; for example, the electronic device and the charger fail to handshake the fast charging protocol and can only perform low power charging. At this time, only the basic power supply needs to be provided to the battery module 300 through the BUCK circuit 251. Since the charging power is low, the first charge pump circuit 252 and the second charge pump circuit 253 are in the off state.

[0089] For the scenario of high-power fast charging between the electronic device and the charger, for example, the electronic device and the charger have a successful handshake of the fast charging protocol. At this time, the first charge pump circuit 252 and the second charge pump circuit 253 work simultaneously, that is, the first charge pump circuit 252 outputs one power supply to the battery module 300 through the first connector 261, and the second charge pump circuit 253 outputs another power supply to the battery module 300 through the second connector 262, and the parallel circuit is used to increase the charging power of the battery module 300.

[0090] It can be understood that, ideally, since the first charge pump circuit 252 and the second charge pump circuit 253 are parallel circuits, the power supply voltage V1 output by the first charge pump circuit 252 to the battery module 300 should be equal to the power supply voltage V2 output by the second charge pump circuit 253 to the battery module 300, that is, the first charge pump circuit 252 and the second charge pump circuit 253 operate in a standard operating mode.

[0091] However, it can be seen from the above that the impedance of the two parallel branches is difficult to match to be completely consistent, and the impedance difference of the parallel branches in different batches of electronic devices is also different. Therefore, the actual power supply voltage V1 output to the first connector 261 is quite different from the power supply voltage V2 output to the second connector 262, especially in the high current constant current charging stage. The difference in the power supply voltage output by different charge pump branches causes the charge pump circuit to be unable to work in the standard working mode, thereby reducing the power supply efficiency, which in turn leads to a reduction in the fast charging efficiency.

[0092] Therefore, in some embodiments of the present disclosure, the difference in the supply voltage output by different charge pump branches is converged to a smaller range by adjusting the charging control in real time during the fast charging process, thereby improving the fast charging efficiency. Figure 2 Provide explanation.

[0093] In some embodiments, the charging control method of the present disclosure can be applied to the electronic device described above and executed by the control circuit 220 of the electronic device. Figure 2 As shown, the charging control method in this example includes:

[0094] S210: During the charging process, detect the supply voltage outputted by the charge pump circuit to the battery module of the electronic device.

[0095] S220 , adjusting charging parameters of the charge pump circuits according to the voltage difference of the supply voltages between the charge pump circuits until the voltage difference converges to a preset voltage difference range.

[0096] In the embodiments of the present disclosure, the fast charging process of the electronic device and the charger refers to the charging process in which the electronic device and the charger interact through the fast charging protocol and successfully establish a fast charging connection.

[0097] It is understandable that if an electronic device wants to achieve fast charging, the electronic device and the charger need to support the same fast charging protocol. The fast charging protocol can be the public fast charging protocol mentioned above, or it can be a private fast charging protocol. Only when the protocol interaction and handshake are successful can high-power fast charging be achieved according to the charging current and voltage specified in the protocol. If the charger does not support the fast charging protocol, it cannot establish a fast charging connection with the electronic device. At this time, it can only provide the current and voltage of the basic mode to achieve low-power and low-speed charging.

[0098] Since the charge pump circuit works in the high-power fast charging stage, the charging control method of the embodiment of the present disclosure is mainly aimed at the fast charging process of the charge pump circuit working stage. In the following of the present disclosure, the method of the embodiment of the present disclosure will be illustrated by the complete charging process of the electronic device. It will not be described in detail here, and only the control of the fast charging process will be described.

[0099] In the disclosed embodiment, after the electronic device establishes fast charging with the charger, the electronic device can detect in real time the supply voltage output by each charge pump circuit to the battery module. The supply voltage refers to the voltage entering the battery module, that is, the battery pack voltage.

[0100] For example Figure 1 In the example, the first charge pump circuit 252 outputs a supply voltage to the battery module 300, that is, a voltage V1 at the position of the first connector 261, and the second charge pump circuit 253 outputs a supply voltage to the battery module 300, that is, a voltage V2 at the position of the second connector 262. Each charge pump circuit can monitor the supply voltage output to the battery module 300 in real time.

[0101] In this example, the control circuit 220 of the electronic device can periodically obtain the power supply voltage V1 and the power supply voltage V2. The length of the detection cycle can be selected according to the specific scenario requirements. The present disclosure does not limit this. For example, in one example, the length of the detection cycle can be 50ms to 200ms.

[0102] As can be seen from the above, since the impedance of different charge pump branches may be different, the actually detected power supply voltage V1 and power supply voltage V2 may also be different. In the embodiment of the present disclosure, after the power supply voltage V1 and the power supply voltage V2 are detected, the voltage difference ΔV between the two can be calculated, expressed as: ΔV = |V1-V2|.

[0103] It can be understood that the larger the voltage difference ΔV, the greater the difference between the supply voltage V1 and the supply voltage V2, and thus the lower the working efficiency of the charge pump circuit. Therefore, in the embodiment of the present disclosure, the charging parameters of one or more charge pump circuits can be dynamically adjusted according to the voltage difference ΔV of each cycle, so that the voltage difference ΔV between the supply voltage V1 and the supply voltage V2 converges to a smaller voltage difference range, that is, the supply voltage V1 and the supply voltage V2 are kept as consistent as possible, thereby improving the charge pump efficiency and further improving the fast charging efficiency.

[0104] In some implementations of the present disclosure, the charging parameters of the charge pump circuit are adjusted based on the voltage difference ΔV, which may include the following two directions:

[0105] 1) Change the working mode of the charge pump circuit.

[0106] According to the aforementioned heat loss principle, the greater the charging current, the greater the heat loss, and thus the greater the voltage difference ΔV between the supply voltage V1 and the supply voltage V2. Therefore, the working mode of the charge pump circuit can be changed to reduce the charging current, so that the voltage difference ΔV can be converged to a smaller voltage difference range, thereby improving the charge pump efficiency.

[0107] 2) Increase the input voltage of the charge pump circuit with a smaller supply voltage.

[0108] For example, if the supply voltage V1 is lower than the supply voltage V2, the supply voltage V1 can be increased by increasing the input voltage of the first charge pump circuit 252, so that the supply voltage V1 is close to or consistent with the supply voltage V2, thereby improving the charge pump efficiency.

[0109] The following are combined Figure 3 , Figure 4 The embodiment describes the adjustment process of the charge pump circuit in the charging control method disclosed in the present invention.

[0110] like Figure 3 As shown, in some embodiments, the charging control method of the present disclosure example, the process of adjusting the charging parameters of the charge pump circuit according to the voltage difference, includes:

[0111] S310 , determining a voltage difference range corresponding to the voltage difference according to the voltage difference of the power supply voltages between the charge pump circuits.

[0112] S320 , configuring each charge pump circuit to operate in a corresponding operating mode according to the voltage difference range.

[0113] like Figure 4 As shown, in some implementations, the process of configuring the charge pump circuit operating mode according to the voltage difference range includes:

[0114] S321. Determine a target operating mode corresponding to the pressure difference range according to the pressure difference range and a pre-configured corresponding relationship.

[0115] S322, configuring each charge pump circuit to operate in a target operating mode.

[0116] by Figure 1 As shown in the figure as an example, a correspondence between the working mode and the voltage difference ΔV can be constructed in advance for the charge pump circuit. In the correspondence, the voltage difference ΔV can be divided into multiple voltage difference ranges in advance, so that different voltage difference ranges correspond to different working modes.

[0117] For example, in an exemplary implementation, the pre-established correspondence relationship may be shown in the following Table 1:

[0118] Table 1

[0119] Differential pressure range Working Mode <![CDATA[V1≥ΔV>V0]]> 4:1 <![CDATA[V2≥ΔV>V1]]> 2:1 <![CDATA[ΔV>V2]]> 1:1

[0120] In the corresponding relationship shown in Table 1, when the voltage difference ΔV is in the voltage difference range V1≥ΔV>V0, the corresponding working mode of the charge pump circuit is 4:1, indicating that the ratio of the input voltage to the output voltage of the charge pump is 4:1, and the ratio of the input current to the output current is 1:4. When the voltage difference ΔV is in the voltage difference range V2≥ΔV>V1, the corresponding working mode of the charge pump circuit is 2:1, indicating that the ratio of the input voltage to the output voltage of the charge pump is 2:1, and the ratio of the input current to the output current is 1:2. When the voltage difference ΔV is in the voltage difference range ΔV>V2, the corresponding working mode of the charge pump circuit is 1:1, indicating that the ratio of the input voltage to the output voltage of the charge pump is 1:1, and the ratio of the input current to the output current is 1:1.

[0121] It can be understood that in the corresponding relationship of the example in Table 1, the larger the voltage difference ΔV, the closer the working mode of the charge pump is to 1:1, and thus the smaller the output current. According to the aforementioned heat loss principle, as the output current decreases, the heat loss of the parallel branch of the charge pump decreases, and thus the voltage difference ΔV of the supply voltage of the parallel branch of the charge pump decreases.

[0122] Therefore, in some embodiments of the present disclosure, during the fast charging process of the electronic device, after the voltage difference ΔV between the supply voltages of the first charge pump circuit 252 and the second charge pump circuit 253 is obtained through the above-mentioned detection, the voltage difference range can be determined based on the voltage difference ΔV, and then the corresponding operating mode, that is, the target operating mode, is determined based on the voltage difference range in combination with the corresponding relationship shown in Table 1.

[0123] For example, in one example, the voltage difference range of the voltage difference ΔV is V2 ≥ ΔV > V1, so according to the corresponding relationship shown in Table 1, the target working mode can be determined to be 2:1.

[0124] After determining the target operating mode, each charge pump circuit can be configured to operate in the target operating mode. For example, in the above example, if the target operating mode is determined to be 2:1, the first charge pump circuit 252 and the second charge pump circuit 253 can be controlled to switch to the 2:1 operating mode, thereby reducing the output current and further reducing the voltage difference ΔV of the supply voltage.

[0125] From the above, we can see that Figure 3 and Figure 4 In an implementation, the working mode of the charge pump circuit is dynamically adjusted based on the voltage difference, thereby reducing the output current of the charge pump circuit, reducing heat loss, and further reducing the voltage difference between the parallel branches of the charge pump, thereby improving the charge pump efficiency.

[0126] like Figure 5 As shown, in some embodiments, the charging control method of the present disclosure example, the process of adjusting the charging parameters of the charge pump circuit according to the voltage difference, includes:

[0127] S510 . Determine a maximum supply voltage according to the supply voltages of the charge pump circuits.

[0128] S520 . For each charge pump circuit, adjust the input voltage of the charge pump circuit according to the difference between the corresponding power supply voltage and the maximum power supply voltage.

[0129] In the implementation manner of the present disclosure, after the supply voltage of each charge pump circuit is detected and obtained through the aforementioned process, the supply voltage with the largest voltage value can be determined therefrom, that is, the maximum supply voltage described in the present disclosure.

[0130] by Figure 1 Taking the example shown, after obtaining the power supply voltage V1 output by the first charge pump circuit 252 to the battery module 300 and the power supply voltage V2 output by the second charge pump circuit 253 to the battery module 300, the maximum power supply voltage Vmax is determined by comparing the power supply voltage V1 and the power supply voltage V2, which is expressed as: Vmax=max(V1, V2).

[0131] As can be seen from the foregoing, the adjustment method of this embodiment is to increase the input voltage of the charge pump circuit with a smaller supply voltage, so as to increase the smaller supply voltage to the same or close to the maximum supply voltage. Therefore, in the embodiment of the present disclosure, after determining the maximum supply voltage Vmax, the input voltage can be compensated according to the difference between the smaller supply voltage and the maximum supply voltage Vmax. Figure 5 Provide explanation.

[0132] like Figure 6 As shown, in some embodiments, the charging control method of the present disclosure example, the process of compensating the charge pump input voltage includes:

[0133] S521. For each charge pump circuit, determine an input voltage compensation value of the charge pump circuit according to its corresponding working mode and the difference between the power supply voltage and the maximum power supply voltage.

[0134] S522: Determine a target input voltage of the charge pump circuit according to the input voltage compensation value and the current input voltage of the charge pump circuit.

[0135] S523: Send the target input voltage to the charger to adjust the input voltage of the charge pump circuit to the target input voltage.

[0136] Combination Figure 1 For example, after determining the maximum supply voltage Vmax between the supply voltage V1 and the supply voltage V2, it is necessary to compensate the input voltage based on the difference between the supply voltage and the maximum supply voltage Vmax.

[0137] For example, in one example, the maximum supply voltage Vmax=V1, which means that the supply voltage V2 output by the second charge pump circuit 253 is relatively small, and the supply voltage V2 needs to be increased to be the same as or close to the supply voltage V1.

[0138] First, the difference ΔV′ between the power supply voltage V2 and the maximum power supply voltage Vmax may be calculated, which is expressed as: ΔV′=Vmax-V2=V1-V2.

[0139] Then, an input voltage compensation value ΔVin of the input voltage Vin of the second charge pump circuit 253 needs to be determined according to the difference ΔV′. The input voltage compensation value ΔVin represents a voltage value that needs to be compensated for the input voltage Vin.

[0140] According to the above, when the charge pump circuit works in different working modes, the ratio of input voltage to output voltage is different, so the input voltage compensation value ΔVin is related to the working mode of the charge pump circuit. In the embodiment of the present disclosure, the input voltage compensation value ΔVin can be determined according to the working mode of the charge pump circuit and the difference ΔV'.

[0141] For example, in one example, the working mode of the second charge pump circuit 253 is 2:1, indicating that the ratio of the input voltage to the output voltage is 2:1. Therefore, after determining the difference ΔV', the input voltage compensation value of the second charge pump circuit 253 can be obtained as 2ΔV' according to the working mode 2:1.

[0142] After obtaining the input voltage compensation value 2ΔV', the input voltage compensation value 2ΔV' can be used to compensate the current input voltage Vin, and the target input voltage Vin'=Vin+2ΔV' is obtained. After determining the target input voltage Vin', the electronic device needs to apply for the target input voltage Vin' from the charger, that is, the electronic device communicates with the charger through the charging interface 110 and sends the target input voltage Vin' to the charger, so that the input voltage of the second charge pump circuit 253 is increased from the original Vin to Vin', and the adjustment of the current control cycle is completed.

[0143] From the above, we can see that Figure 5 In an implementation, by raising the input voltage of the charge pump circuit with a smaller supply voltage, the supply current of each charge pump parallel branch converges to a smaller voltage difference range, so that the charge pump circuit operates in a standard operating mode, thereby improving the charge pump efficiency.

[0144] In the embodiment of the present disclosure, only Figure 3 The method process of the embodiment adjusts the charging parameters of the charge pump circuit, and can also only use Figure 5 The method process of the embodiment adjusts the charging parameters of the charge pump, and can also be combined with Figure 3 and Figure 5 The method process of the embodiment adjusts the charging parameters of the charge pump, which can be understood by those skilled in the art and will not be elaborated in this disclosure.

[0145] In addition, the above implementation only illustrates the charging parameter adjustment process of the charge pump circuit in one detection cycle. It can be understood that during the fast charging process of the electronic device, the above method process can be repeated in each detection cycle, so that the voltage difference between each charge pump can be converged to a preset voltage difference range. The preset voltage difference range indicates the range where the voltage difference approaches zero, that is, the supply voltage of the charge pump circuit is close to or the same, so that the charge pump efficiency is the highest.

[0146] From the above, it can be seen that in the embodiments of the present disclosure, during the fast charging process of the electronic device, the charging parameters of the charge pump circuit are dynamically adjusted in real time based on the voltage difference of the supply voltage of the charge pump circuit, so as to converge the voltage difference to a smaller voltage difference range, so that the supply voltages of each charge pump circuit remain basically consistent, thereby improving the charge pump efficiency and further improving the fast charging efficiency of the electronic device.

[0147] In some embodiments, considering the voltage fluctuation during the charging process and the influence of the power supply voltage acquisition error and other factors, the power supply voltages of each charge pump circuit obtained may have large errors, which may lead to large deviations in the above control process. Therefore, in some embodiments of the present disclosure, after obtaining the power supply voltages of each charge pump circuit, the power supply voltages may be screened, and the power supply voltages with large errors may be screened out. Figure 7 Provide explanation.

[0148] like Figure 7 As shown, in some embodiments, the charging control method of the example of the present disclosure, before adjusting the charging parameters of the charge pump circuit according to the voltage difference, further includes:

[0149] S710: Obtain the current cell voltage of the battery module.

[0150] S720 , in response to the supply voltage of each charge pump circuit being greater than the cell voltage, executing a process of adjusting the charging parameters of the charge pump circuit according to the voltage difference of the supply voltage between the charge pump circuits.

[0151] Still Figure 1 Taking the implementation as an example, after detecting and obtaining the power supply voltage V1 of the first charge pump circuit 252 and the power supply voltage V2 of the second charge pump circuit 253 , the control circuit 220 may further read the cell voltage Vbat of the battery module 300 .

[0152] The cell voltage Vbat refers to the real-time voltage value of the cell 310 . The battery protection board 320 will record the voltage value currently charged into the cell 310 in real time, so that the control circuit 220 can read the current real-time cell voltage Vbat from the battery protection board 320 .

[0153] It can be understood that since the first charge pump circuit 252 and the second charge pump circuit 253 are connected in parallel with the battery module 300, without considering the path loss, the supply voltage V1 = supply voltage V2 = cell voltage Vbat should be satisfied. However, due to the existence of path loss, the voltage value actually charged into the cell 310 should be less than the supply voltage, so it should satisfy: V1>Vbat, V2>Vbat.

[0154] Based on this principle, the supply voltage V1 and the supply voltage V2 can be compared with the current battery cell voltage Vbat respectively. In one example, if either of the supply voltages V1 and V2 is less than the battery cell voltage Vbat, it means that there is a large error in the supply voltage obtained in the current cycle. If charging control is performed based on this supply voltage, it may cause a large control error, so the supply voltage collected in the current cycle can be discarded and wait for the next cycle to collect again. In another example, if V1>Vbat and V2>Vbat, it means that the power supply voltage V1 and the supply voltage V2 obtained in the current cycle are of high accuracy, so that the charging control is completed based on the aforementioned implementation process, and the present disclosure will not go into details.

[0155] From the above, it can be seen that in the embodiments of the present disclosure, by screening the collected supply voltages output by each charge pump, the charging control accuracy is improved, thereby improving the fast charging effect of the electronic device.

[0156] The above is a description of the process of the charging control method in the embodiment of the present disclosure. For further understanding, the following is a description of the process of the charging control method in the embodiment of the present disclosure. Figure 1 The figure is taken as an example to illustrate the complete charging process of an electronic device from being activated by a dead battery to being fully charged.

[0157] 1) Dead battery activation

[0158] Dead battery refers to the state where the cell voltage of the battery module 300 is lower than the power-on voltage, so that the electronic device is forced to shut down. The process of charging from the dead battery state to the power-on voltage is the dead battery activation of the battery.

[0159] like Figure 1 As shown, after the electronic device is plugged into the charger, it is in a dead state and cannot interact with the charger through protocol. Therefore, the electronic device can only power the battery module 300 through the BUCK circuit 251. The charging power at this time is relatively small, generally not exceeding 15W. Until the cell voltage Vbat is charged to the power-on voltage, the electronic device can be turned on and work.

[0160] 2) Fast charging stage

[0161] When the cell voltage Vbat of the electronic device reaches the power-on voltage, the electronic device can interact with the charger through the fast charging protocol and establish a fast charging connection after the protocol handshake is successful.

[0162] During the fast charging process, the electronic device controls the first charge pump circuit 252 and the second charge pump circuit 253 to supply power simultaneously, and uses a parallel circuit to achieve high-power fast charging.

[0163] At the same time, the electronic device periodically detects the power supply voltage V1 of the first charge pump circuit 252 and the power supply voltage V2 of the second charge pump circuit 253, and based on the aforementioned control method process, according to the voltage difference between the power supply voltages V1 and V2, dynamically adjusts the charging parameters of the first charge pump circuit 252 and the second charge pump circuit 253, so that the voltage difference ΔV converges to a preset voltage difference range, thereby improving the charging efficiency in the fast charging stage. For the specific control process and principle, those skilled in the art can understand and fully implement it by referring to the aforementioned, and the present disclosure will not elaborate on it.

[0164] It is worth noting that in some embodiments, in the fast charging stage, in addition to controlling the first charge pump circuit 252 and the second charge pump circuit 253 to supply power simultaneously, the BUCK circuit 251, the first charge pump circuit 252 and the second charge pump circuit 253 can also be controlled to supply power simultaneously. The BUCK circuit 251 only provides a weak current to avoid a short-term charging interruption when the charge pump circuit is turned off in the trickle stage.

[0165] 3) Trickle stage

[0166] As the fast charging stage proceeds, the cell voltage Vbat of the battery module 300 gradually reaches the charge cut-off voltage, which refers to the maximum protection voltage of the cell 310. If it is higher than the charge cut-off voltage, overcharging may occur and damage the cell.

[0167] When the cell voltage Vbat reaches the charging cut-off voltage, the fast charging stage ends and the charging current gradually decreases in the trickle charging stage. At this time, the first charge pump circuit 252 and the second charge pump circuit 253 can be controlled to be turned off, and only the BUCK circuit 251 is used for constant voltage charging.

[0168] It can be understood that in the fast charging stage, since the BUCK circuit 251, the first charge pump circuit 252 and the second charge pump circuit 253 are controlled to supply power at the same time, after turning off the first charge pump circuit 252 and the second charge pump circuit 253, the BUCK circuit 251 can still continue to supply power, so there will be no charging interruption.

[0169] As the BUCK circuit 251 charges at a constant voltage, the charging current decreases continuously until the cell current decreases to the charging cut-off current, and the entire charging process ends.

[0170] From the above, it can be seen that in the embodiments of the present disclosure, during the fast charging process of the electronic device, the charging parameters of the charge pump circuit are dynamically adjusted in real time based on the voltage difference of the supply voltage of the charge pump circuit, so as to converge the voltage difference to a smaller voltage difference range, so that the supply voltages of each charge pump circuit remain basically consistent, thereby improving the charge pump efficiency and further improving the fast charging efficiency of the electronic device.

[0171] In some embodiments, the present disclosure provides a charging control device that can be applied to the electronic device described above. Figure 8 As shown, the charging control device in this example includes:

[0172] The voltage detection module 10 is configured to detect the supply voltage output by the charge pump circuit to the battery module of the electronic device during the charging process; the charging circuit of the electronic device includes at least two charge pump circuits, and the at least two charge pump circuits are respectively connected to the battery module;

[0173] The parameter adjustment module 20 is configured to adjust the charging parameters of the charge pump circuit according to the voltage difference of the supply voltage between the charge pump circuits until the voltage difference converges to a preset voltage difference range.

[0174] In some embodiments, the charging parameter includes an operating mode of the charge pump circuit, and the operating mode represents an input-output ratio of the charge pump circuit; the parameter adjustment module 20 is configured to:

[0175] Determining a voltage difference range corresponding to the voltage difference according to the voltage difference of the power supply voltages between the charge pump circuits;

[0176] Each charge pump circuit is configured to operate in a corresponding operating mode according to the voltage difference range.

[0177] In some implementations, the parameter adjustment module 20 is configured to:

[0178] Determining a target operating mode corresponding to the pressure difference range according to the pressure difference range and a pre-configured corresponding relationship; the corresponding relationship represents a corresponding relationship between the pressure difference range and the operating mode of the charge pump circuit;

[0179] Each charge pump circuit is configured to operate in the target operation mode.

[0180] In some embodiments, the charging parameter includes an input voltage of a charge pump circuit; and the parameter adjustment module 20 is configured to:

[0181] Determining a maximum supply voltage according to supply voltages of various charge pump circuits;

[0182] For each charge pump circuit, the input voltage of the charge pump circuit is adjusted according to the difference between the corresponding power supply voltage and the maximum power supply voltage.

[0183] In some implementations, the parameter adjustment module 20 is configured to:

[0184] For each charge pump circuit, determining an input voltage compensation value of the charge pump circuit according to its corresponding working mode and a difference between a power supply voltage and the maximum power supply voltage;

[0185] Determining a target input voltage of the charge pump circuit according to the input voltage compensation value and a current input voltage of the charge pump circuit;

[0186] The target input voltage is sent to the charger to adjust the input voltage of the charge pump circuit to the target input voltage.

[0187] In some implementations, the parameter adjustment module 20 is configured to:

[0188] Obtaining the current cell voltage of the battery module;

[0189] In response to the supply voltages of the charge pump circuits being greater than the cell voltage, the process of adjusting the charging parameters of the charge pump circuits according to the voltage differences of the supply voltages between the charge pump circuits is performed.

[0190] In some embodiments, the charging circuit of the electronic device includes a BUCK circuit, a first charge pump circuit, and a second charge pump circuit connected in parallel, and the BUCK circuit, the first charge pump circuit, and the second charge pump circuit are respectively connected to the battery module.

[0191] From the above, it can be seen that in the embodiments of the present disclosure, during the fast charging process of the electronic device, the charging parameters of the charge pump circuit are dynamically adjusted in real time based on the voltage difference of the supply voltage of the charge pump circuit, so as to converge the voltage difference to a smaller voltage difference range, so that the supply voltages of each charge pump circuit remain basically consistent, thereby improving the charge pump efficiency and further improving the fast charging efficiency of the electronic device.

[0192] In some embodiments, the present disclosure provides an electronic device, which may be the electronic device described above, and includes:

[0193] A battery module and a charging circuit, wherein the charging circuit comprises at least two charge pump circuits, and the at least two charge pump circuits are respectively connected to the battery module;

[0194] The controller includes a processor and a memory, wherein the memory stores computer instructions, and the computer instructions are used to enable the processor to execute the method described in any of the above embodiments.

[0195] In some embodiments, the present disclosure provides a storage medium storing computer instructions, wherein the computer instructions are used to enable a computer to execute the method described in any of the above embodiments.

[0196] Fig. 9 The electronic device structure in some embodiments of the present disclosure is shown in FIG. Fig. 9 Electronic devices according to some embodiments of the present disclosure are described.

[0197] Reference Fig. 9 , the electronic device 1800 may include one or more of the following components: a processing component 1802 , a memory 1804 , a power component 1806 , a multimedia component 1808 , an audio component 1810 , an input / output (I / O) interface 1812 , a sensor component 1816 , and a communication component 1818 .

[0198] The processing component 1802 generally controls the overall operation of the electronic device 1800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1802 may include one or more processors 1820 to execute instructions. In addition, the processing component 1802 may include one or more modules to facilitate interaction between the processing component 1802 and other components. For example, the processing component 1802 may include a multimedia module to facilitate interaction between the multimedia component 1808 and the processing component 1802. For another example, the processing component 1802 may read executable instructions from a memory to implement electronic device related functions.

[0199] The memory 1804 is configured to store various types of data to support operations on the electronic device 1800. Examples of such data include instructions for any application or method operating on the electronic device 1800, contact data, phone book data, messages, pictures, videos, etc. The memory 1804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0200] The power supply component 1806 provides power to the various components of the electronic device 1800. The power supply component 1806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 1800.

[0201] The multimedia component 1808 includes a display screen that provides an output interface between the electronic device 1800 and the user. In some embodiments, the multimedia component 1808 includes a front camera and / or a rear camera. When the electronic device 1800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0202] The audio component 1810 is configured to output and / or input audio signals. For example, the audio component 1810 includes a microphone (MIC), and when the electronic device 1800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1804 or sent via the communication component 1818. In some embodiments, the audio component 1810 also includes a speaker for outputting audio signals.

[0203] I / O interface 1812 provides an interface between processing component 1802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0204] The sensor assembly 1816 includes one or more sensors for providing various aspects of status assessment for the electronic device 1800. For example, the sensor assembly 1816 can detect the open / closed state of the electronic device 1800, the relative positioning of components, such as the display and keypad of the electronic device 1800, and the sensor assembly 1816 can also detect the position change of the electronic device 1800 or a component of the electronic device 1800, the presence or absence of user contact with the electronic device 1800, the orientation or acceleration / deceleration of the electronic device 1800, and the temperature change of the electronic device 1800. The sensor assembly 1816 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1816 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1816 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0205] The communication component 1818 is configured to facilitate wired or wireless communication between the electronic device 1800 and other devices. The electronic device 1800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G, 5G or 6G, or a combination thereof. In an exemplary embodiment, the communication component 1818 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1818 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0206] In an exemplary embodiment, the electronic device 1800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0207] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the embodiments. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A charging control method, characterized in that: include: During the charging process, detecting the supply voltage outputted by the charge pump circuit to the battery module of the electronic device; the charging circuit of the electronic device comprises at least two charge pump circuits, and the at least two charge pump circuits are respectively connected to the battery module; According to the voltage difference of the supply voltage between the charge pump circuits, the charging parameters of the charge pump circuits are adjusted until the voltage difference converges to a preset voltage difference range.

2. The method according to claim 1, characterized in that The charging parameter includes an operating mode of the charge pump circuit, and the operating mode indicates an input-output ratio of the charge pump circuit; and adjusting the charging parameter of the charge pump circuit according to the voltage difference of the power supply voltage between the charge pump circuits includes: Determining a voltage difference range corresponding to the voltage difference according to the voltage difference of the power supply voltages between the charge pump circuits; Each charge pump circuit is configured to operate in a corresponding operating mode according to the voltage difference range.

3. The method according to claim 2, characterized in that The configuring each charge pump circuit to operate in a corresponding operating mode according to the voltage difference range includes: Determining a target operating mode corresponding to the pressure difference range according to the pressure difference range and a pre-configured corresponding relationship; the corresponding relationship represents a corresponding relationship between the pressure difference range and the operating mode of the charge pump circuit; Each charge pump circuit is configured to operate in the target operation mode.

4. The method according to any one of claims 1 to 3, characterized in that: The charging parameter includes an input voltage of the charge pump circuit; and adjusting the charging parameter of the charge pump circuit according to the voltage difference of the power supply voltage between the charge pump circuits includes: Determining a maximum supply voltage according to supply voltages of various charge pump circuits; For each charge pump circuit, the input voltage of the charge pump circuit is adjusted according to the difference between the corresponding power supply voltage and the maximum power supply voltage.

5. The method according to claim 4, characterized in that The step of adjusting the input voltage of each charge pump circuit according to the difference between the corresponding power supply voltage and the maximum power supply voltage includes: For each charge pump circuit, determining an input voltage compensation value of the charge pump circuit according to its corresponding working mode and a difference between a power supply voltage and the maximum power supply voltage; Determining a target input voltage of the charge pump circuit according to the input voltage compensation value and a current input voltage of the charge pump circuit; The target input voltage is sent to the charger to adjust the input voltage of the charge pump circuit to the target input voltage.

6. The method according to claim 1, characterized in that The step of adjusting the charging parameters of the charge pump circuit according to the voltage difference of the supply voltages between the charge pump circuits comprises: Obtaining the current cell voltage of the battery module; In response to the supply voltages of the charge pump circuits being greater than the cell voltage, the process of adjusting the charging parameters of the charge pump circuits according to the voltage differences of the supply voltages between the charge pump circuits is performed.

7. The method according to claim 1, characterized in that Also includes: In response to the electronic device establishing a charging connection with the charger, and the cell voltage of the battery module being less than the power-on voltage, controlling the BUCK circuit included in the charging circuit to charge the battery module; In response to the cell voltage being greater than or equal to the power-on voltage, establishing a fast charging connection between the electronic device and the charger, and controlling each charge pump circuit included in the charging circuit to charge the battery module, or controlling each charge pump circuit included in the charging circuit and the BUCK circuit to charge the battery module; In response to the cell voltage reaching the charge cut-off voltage, the BUCK circuit is controlled to perform constant voltage charging on the battery module until the cell current reaches the charge cut-off current.

8. A charging control device, characterized in that: include: A voltage detection module is configured to detect the supply voltage output by the charge pump circuit to the battery module of the electronic device during the charging process; the charging circuit of the electronic device includes at least two charge pump circuits, and the at least two charge pump circuits are respectively connected to the battery module; The parameter adjustment module is configured to adjust the charging parameters of the charge pump circuit according to the voltage difference of the supply voltage between the charge pump circuits until the voltage difference converges to a preset voltage difference range.

9. An electronic device, characterized in that: include: A battery module and a charging circuit, wherein the charging circuit comprises at least two charge pump circuits, and the at least two charge pump circuits are respectively connected to the battery module; A controller comprises a processor and a memory, wherein the memory stores computer instructions, and the computer instructions are used to enable the processor to execute the method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: Computer instructions are stored, and the computer instructions are used to make a computer execute the method according to any one of claims 1 to 7.

Images