Charging circuit, charging method, charging device, terminal and storage medium

Abstract

The invention relates to a charging circuit, a charging method, a charging device, a terminal and a storage medium, and relates to the field of terminals. The first charging module is connected with the power supply end through a first input branch, and the first input branch is provided with a first switch unit; and the second charging module is connected with the power supply end through a second input branch, and the second input branch is provided with a second switch unit. According to the invention, the first switch unit and the second switch unit are arranged in the charging circuit to control the on-off of the input branches of different charging modules of the charging circuit, and the first charging module selects to switch on the first switch unit or the second switch unit according to different output signals of the power supply end, so that when the voltage input by the power supply end is too high, the switching of the first switch unit or the second switch unit is realized. And the charging module which does not support high-voltage input can be cut off through the switch unit.

Description

Technical Field

[0001] The present disclosure relates to the field of terminals, and in particular to a charging circuit, a charging method, a charging device, a terminal and a storage medium. Background Art

[0002] With the advancement of charging technology, the current charging modes have developed into normal charging mode, fast charging mode and high-voltage fast charging mode. Among these modes, high-voltage fast charging requires the use of the real-time monitoring charging voltage function of the overvoltage protection (OVP) chip, which quickly cuts off the circuit when the voltage exceeds the set value to play a protective role.

[0003] However, due to the high design and manufacturing requirements of the OVP chip, it costs more to implement the high-voltage fast charging mode. Summary of the invention

[0004] In order to overcome the problems existing in the related art, the present disclosure provides a charging circuit, a charging method, a charging device, a terminal and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a charging circuit is provided, comprising: a power supply end; a first charging module, connected to the power supply end through a first input branch, the first input branch being provided with a first switch unit; and a second charging module, connected to the power supply end through a second input branch, the second input branch being provided with a second switch unit, wherein the first charging module is connected to the second switch unit, the first charging module controls the first switch unit to be turned on and the second switch unit to be turned off according to a first signal output by the power supply end, and the current of the power supply end flows to the first charging module, and the first charging module controls the first switch unit to be turned off and the second switch unit to be turned on according to a second signal output by the power supply end, and the current of the power supply end flows to the second charging module.

[0006] In some embodiments, the first charging module includes a charge pump, and when the electrical signal passes through the first charging module, the voltage of the electrical signal attenuates.

[0007] In some embodiments, the first charging module includes: an identification end connected to the power supply end, the identification end is used to detect whether the signal output by the power supply end is a first signal or a second signal; a first control end connected to the first switch unit; and a second control end connected to the second switch unit.

[0008] In some embodiments, the identification end includes: a first identification end, the first identification end detects that the electrical signal of the power supply end is a first parameter signal, and the first charging module outputs a first control signal or a second control signal from the first control end according to the first parameter signal; the first switch unit turns on the first input branch after receiving the first control signal, or the first switch unit disconnects the first input branch after receiving the second control signal.

[0009] In some embodiments, the identification end also includes: a second identification end, the second identification end detects that the electrical signal of the power supply end is a second parameter signal, and the first charging module outputs a third control signal or a fourth control signal from the second control end according to the second parameter signal; the second switch unit turns on the second input branch after receiving the third control signal, or the second switch unit disconnects the second input branch after receiving the fourth control signal.

[0010] In some embodiments, the first control signal and the third control signal are high level signals; the second control signal and the fourth control signal are low level signals.

[0011] In some embodiments, the first switch unit is an N-channel field effect transistor, and / or the second switch unit is an N-channel field effect transistor.

[0012] In some embodiments, the first switch unit includes a first electrode, a second electrode and a first control electrode, the first electrode is connected to the power supply end, the second electrode is connected to the first charging module, and the first control electrode is connected to the first control end; and / or the second switch unit includes a third electrode, a fourth electrode and a second control electrode, the third electrode is connected to the power supply end, the fourth electrode is connected to the second charging module, and the second control electrode is connected to the second control end.

[0013] In some embodiments, the second charging module is a power management integrated circuit PMIC.

[0014] In some embodiments, the charging circuit further includes: a load, and the first charging module and the second charging module are connected to the load.

[0015] According to a second aspect of an embodiment of the present disclosure, a terminal is provided, comprising: the charging circuit described in any one of the above embodiments.

[0016] According to a third aspect of an embodiment of the present disclosure, a charging method is provided, which is applied to the charging circuit described in any one of the above embodiments, and the method includes: obtaining an electrical signal from a power supply end; when the electrical signal output by the power supply end is a first signal, controlling the first switch unit to be turned on and the second switch unit to be turned off, and the current from the power supply end flows to the first charging module; when the electrical signal output by the power supply end is a second signal, controlling the first switch unit to be turned off and the second switch unit to be turned on, and the current from the power supply end flows to the second charging module.

[0017] In some embodiments, the method further includes: in response to the electrical signal at the power supply end being in a first threshold range, determining that the electrical signal output by the power supply end is a first signal; in response to the electrical signal at the power supply end being in a second threshold range, determining that the electrical signal output by the power supply end is a second signal.

[0018] In some embodiments, the first threshold range is between 12V and 22V; and / or, the second threshold range is between 5V and 12V.

[0019] In some embodiments, controlling the first switch unit to turn on and the second switch unit to turn off according to the first signal output by the power supply end, and the current from the power supply end flowing to the first charging module also includes: adjusting the voltage attenuation ratio of the first charging module according to the temperature of the terminal.

[0020] In some embodiments, the voltage attenuation ratio of the first charging module is adjusted according to the temperature of the terminal in the following manner: if the terminal temperature is higher than a temperature threshold, the voltage attenuation ratio of the first charging module is increased.

[0021] In some embodiments, according to the first signal output by the power supply end, controlling the first switch unit to be turned on and the second switch unit to be turned off, the current from the power supply end flows to the first charging module and also includes: adjusting the voltage attenuation ratio of the first charging module according to the charging status of the terminal.

[0022] In some embodiments, the voltage attenuation ratio of the first charging module is adjusted according to the charging state of the terminal in the following manner: if the charge amount in the terminal is higher than the first charge threshold, the voltage attenuation ratio of the first charging module is increased.

[0023] In some embodiments, according to the first signal output by the power supply end, controlling the first switch unit to be turned on and the second switch unit to be turned off, and the current from the power supply end flows to the first charging module also includes: if the amount of charge in the terminal is higher than the second charge threshold, controlling the first switch unit to be turned off and the second switch unit to be turned on, and the current from the power supply end flows to the second charging module.

[0024] According to a fourth aspect of an embodiment of the present disclosure, a charging device is provided, which is applied to a terminal, and the terminal includes a charging circuit as described in any one of the above embodiments, and the charging device includes: an acquisition module, used to acquire an electrical signal from a power supply end; an execution module, used to control a first switch unit to be turned on and a second switch unit to be turned off when the electrical signal output from the power supply end is a first signal, and the current from the power supply end flows to the first charging module; when the electrical signal output from the power supply end is a second signal, control the first switch unit to be turned off and the second switch unit to be turned on, and the current from the power supply end flows to the second charging module.

[0025] In some embodiments, the acquisition module also includes: a determination unit, used to determine that the electrical signal output by the power supply end is a first signal in response to the output voltage of the power supply end being in a first threshold range; and to determine that the electrical signal output by the power supply end is a second signal in response to the output voltage of the power supply end being in a second threshold range.

[0026] According to a fifth aspect of an embodiment of the present disclosure, a terminal is provided, comprising: a processor; a memory for storing processor executable instructions; wherein the processor is configured to: execute a charging method as described in any one of the above second aspect and its embodiments.

[0027] According to a sixth aspect of an embodiment of the present disclosure, a computer storage medium is provided, comprising: when instructions in the computer storage medium are executed by a processor of a terminal, the terminal is enabled to execute the charging method as described in any one of the above embodiments.

[0028] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0029] By setting a first switch unit and a second switch unit in the charging circuit, the on and off of the input branches of different charging modules of the charging circuit are controlled. The first charging module selects to turn on the first switch unit or the second switch unit according to the different output signals of the power supply end, so that when the voltage input from the power supply end is too high, the charging module that does not support high-voltage input can be cut off by the switch unit. Compared with the related art, on the one hand, the present disclosure does not need to use an OVP chip to cut off the circuit, thereby saving costs. On the other hand, compared with the OVP chip, the impedance of the first switch unit and / or the second switch unit is smaller, so that the electrical signal loss when they are turned on is less, and less electrical signal loss can make the power higher.

[0030] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0032] Figure 1 is a block diagram of a charging circuit according to an exemplary embodiment.

[0033] Figure 2 is a schematic diagram of a charging circuit according to an exemplary embodiment.

[0034] Figure 3 The figure is a flow chart of a charging method according to an exemplary embodiment.

[0035] Figure 4 The figure is a flow chart showing how to determine a signal output by a power supply terminal according to an exemplary embodiment.

[0036] Figure 5 The present invention is a flowchart showing how to determine whether a voltage output by a power supply terminal is within a first threshold range or a second threshold range according to an exemplary embodiment.

[0037] Figure 6 is a flow chart of a charging method according to another exemplary embodiment.

[0038] Figure 7 is a flow chart of a charging method according to yet another exemplary embodiment.

[0039] Figure 8 is a flow chart of a charging method according to yet another exemplary embodiment.

[0040] Fig. 9 is a block diagram of a charging device according to an exemplary embodiment.

[0041] Fig.10 It is a block diagram of a terminal according to an exemplary embodiment.

[0042] Fig.11 is a block diagram of a charging device according to an exemplary embodiment. DETAILED DESCRIPTION

[0043] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0044] In the related art, high-voltage fast charging requires the use of an overvoltage protection (OVP) chip to monitor the charging voltage in real time. When the voltage exceeds the set value, the circuit is quickly cut off to provide protection.

[0045] However, since the OVP chip needs to perform precise voltage detection and rapid protection cutoff, the performance and reliability requirements of the chip are very high. The OVP chip needs to adopt high-precision analog circuits and stable and reliable digital circuits in design, and requires very fine process control in manufacturing. Compared with ordinary power management chips, the design difficulty and manufacturing requirements of OVP chips directly lead to higher unit costs and prices, which further leads to higher costs for implementing high-voltage fast charging mode.

[0046] In order to solve the above technical problem, an embodiment of the present disclosure provides a charging circuit 100. Figure 1 is a block diagram of a charging circuit according to an exemplary embodiment. Figure 1 As shown, the charging circuit 100 mainly includes a power supply terminal 1 , a first charging module 2 and a second charging module 3 .

[0047] like Figure 1 As shown, the first charging module 2 can be connected to the power supply end 1 through the first input branch 11, and the first input branch 11 can be provided with a first switch unit 12. The second charging module 3 can be connected to the power supply end 1 through the second input branch 13, and the second input branch 13 can be provided with a second switch unit 14. Among them, the first charging module 2 can be connected to the second switch unit 14, and the first charging module 2 can control the first switch unit 12 to be turned on and the second switch unit 14 to be turned off according to the first signal output by the power supply end 1, and the current of the power supply end 1 can flow to the first charging module 2, and the first charging module 2 can control the first switch unit 12 to be turned off and the second switch unit 14 to be turned on according to the second signal output by the power supply end 1, and the current of the power supply end can flow to the second charging module 3.

[0048] In this embodiment, the first switch unit 12 and the second switch unit 14 can be set in the charging circuit 100 to control the on and off of different input branches of the charging circuit 100. The first charging module 2 can choose to turn on the first switch unit 12 or the second switch unit 14 according to the different output signals of the power supply terminal 1, so that when the voltage input to the power supply terminal 1 is too high, the charging module that does not support high-voltage input can be cut off by the switch unit. Compared with the related art, on the one hand, the present disclosure does not need to use an OVP chip to cut off the circuit, thereby saving costs. On the other hand, compared with the OVP chip, the impedance of the first switch unit 12 and / or the second switch unit 14 is smaller, so that the electrical signal loss when they are turned on is less, and less electrical signal loss can make the power higher.

[0049] Among them, the voltage of the power supply terminal 1 can be any one of the categories of normal charging voltage, fast charging voltage or high-voltage fast charging voltage. It should be noted that the normal charging voltage range can be around 5V, the fast charging voltage range can be around 9V to 12V, and the high-voltage fast charging voltage range can be around 12V to 22V. However, the present disclosure does not specifically limit the voltage range of the power supply terminal 1, that is, those skilled in the art can adjust its range according to actual conditions.

[0050] It is worth noting that when the voltage range of the power supply terminal 1 is the voltage range of high-voltage fast charging, the electrical signal of the power supply terminal 1 can be a first signal. When the power supply terminal 1 provides the first signal, the first charging module 2 can control the first switch unit 12 to be turned on and the second switch unit 14 to be turned off according to the first signal output by the power supply terminal 1, and the current of the power supply terminal 1 can flow to the first charging module 2. At this time, the first charging module 2 can charge the load in the charging circuit 100.

[0051] It is also worth noting that when the voltage range of the power supply end 1 is the voltage range of normal charging or fast charging, the electrical signal of the power supply end 1 may be a second signal. When the power supply end 1 provides the second signal, the first charging module 2 may control the first switch unit 12 to be disconnected and the second switch unit 14 to be turned on according to the second signal output by the power supply end 1, and the current of the power supply end may flow to the second charging module 3. At this time, the load in the charging circuit 100 may be charged by the second charging module 3.

[0052] The first switch unit 12 may be a metal-oxide-semiconductor field-effect transistor (MOSFET) or an insulated gate bipolar transistor (IGBT), etc., but the present disclosure does not specifically limit the type of the first switch unit 12, that is, those skilled in the art may adjust the type according to actual conditions. As long as the first switch unit 12 can turn on or off the first input branch 11 in the charging circuit 100, it is acceptable.

[0053] The second switch unit 14 may also be a metal-oxide-semiconductor field-effect transistor (MOSFET) or an insulated gate bipolar transistor (IGBT), etc., but the present disclosure does not specifically limit the type of the second switch unit 14, that is, those skilled in the art may adjust its type according to actual conditions. As long as the second switch unit 14 can turn on or off the second input branch 13 in the charging circuit 100, it is acceptable.

[0054] In the related art, in the high-voltage fast charging scenario, the voltage at the power supply end can be as high as 20V or even higher. However, it is unsafe to directly charge such a high voltage into the load, which can easily damage the load. Therefore, voltage reduction is required.

[0055] In some embodiments, the first charging module 2 may include a charge pump. When the electrical signal passes through the first charging module 2, the voltage of the electrical signal may be attenuated.

[0056] In this embodiment, when the voltage at the power supply end 1 is too high, the voltage can be effectively reduced by the charge pump of the first charging module 2 to provide a safer charging voltage for the load in the charging circuit 100 .

[0057] It is worth noting that a charge pump may be a circuit that can move charge from an input capacitor to an output capacitor through periodic switching operations, thereby increasing or decreasing the voltage.

[0058] In one case of this embodiment, a charge pump may be used to step down the voltage, wherein the step-down ratio may be 4:1, that is, a 4:1 Charge Pump may be used to step down the voltage passing through the first charging module 2, and a safer charging voltage may be provided for the load in the charging circuit 100. However, the present disclosure is not limited thereto, that is, those skilled in the art may adjust the step-down ratio according to actual conditions, as long as the step-down ratio can achieve high-voltage fast charging and provide a safer charging voltage for the load in the charging circuit 100.

[0059] In some embodiments, the second charging module 3 may be a main power management integrated circuit PMIC (Power Management Integrated Circuit, PMIC).

[0060] In this embodiment, the second charging module 3 may be a main PMIC of the charging circuit 100 , and the charging circuit 100 may be managed by the second charging module 3 .

[0061] In some embodiments, Figure 2 FIG. 1 is a schematic diagram of a charging circuit according to an exemplary embodiment. Figure 2 As shown, the first charging module 2 may include an identification terminal 20, a first control terminal 21 and a second control terminal 22. The identification terminal 20 may be connected to the power supply terminal 1, and the identification terminal 20 may be used to detect whether the signal output by the power supply terminal 1 is the first signal or the second signal. The first control terminal 21 may be connected to the first switch unit 12, and the second control terminal 22 may be connected to the second switch unit 14.

[0062] In this embodiment, the identification terminal 20 can determine whether the electrical signal of the power supply terminal 1 is the first signal or the second signal. If the power supply terminal 1 is determined to be the first signal, the first control terminal 21 controls the first switch unit 12 to be turned on, and the second control terminal 22 controls the second switch unit 14 to be turned off. The charging circuit 100 can cut off the second input branch 13 when the voltage is too high, thereby protecting the load in the charging circuit 100.

[0063] Among them, Figure 2 As shown, the first control terminal 21 can be a wireless power control gate (WPCGATE) in the first charging module 2, and the first control terminal 21 can output level signals of different states. The on and off of the first switch unit 12 can be controlled by the level state of the first control terminal 21.

[0064] like Figure 2 As shown, the second control terminal 22 can be an overvoltage protection gate port (OverVoltage Protection Gate, OVPGATE) in the first charging module 2, and the second control terminal 22 can also output level signals of different states. The on-off state of the second switch unit 14 can also be controlled by the level state of the second control terminal 22.

[0065] In some embodiments, Figure 2 As shown, the identification terminal 20 may include a first identification terminal 201, and the first identification terminal 201 may detect that the electrical signal of the power supply terminal 1 is a first parameter signal. The first charging module 2 may output a first control signal or a second control signal from the first control terminal 21 according to the first parameter signal, and the first switch unit 12 may turn on the first input branch 11 after receiving the first control signal, or the first switch unit 12 may turn off the first input branch 11 after receiving the second control signal.

[0066] In this embodiment, the first parameter signal detected by the first identification terminal 201 can be fed back to the first control terminal 21. The first control terminal 21 can determine whether the first control signal or the second control signal can be outputted currently according to the first preset range value. The first control signal can turn on the first input branch 11, and the second control signal can turn off the first input branch 11, so as to realize the judgment of the on-off condition of the first input branch 11.

[0067] It is worth noting that the first parameter signal may have a first preset range value, for example, the first preset range value may be 12 V to 22 V. When the first identification end 201 detects that the first parameter signal is within the first preset range value, the first control end 21 may output a first control signal, and when the first identification end 201 detects that the first parameter signal is not within the first preset range value, the first control end 21 may output a second control signal.

[0068] Among them, Figure 2 As shown, the first identification terminal 201 can be a wireless charging voltage control port (Wireless Power Voltage Control, VWPC) in the first charging module 2. The first identification terminal 201 is connected to the power supply terminal 1, and can identify whether the voltage of the power supply terminal 1 belongs to the normal charging voltage, fast charging voltage or high-voltage fast charging voltage. Then, the first control terminal 21 sends a corresponding control signal according to the range of the charging voltage identified by the first identification terminal 201.

[0069] In some embodiments, Figure 2 As shown, the identification terminal 20 may further include a second identification terminal 202, and the second identification terminal 202 may detect that the electrical signal of the power supply terminal 1 is a second parameter signal. The first charging module 2 may output a third control signal or a fourth control signal from the second control terminal 22 according to the second parameter signal, and the second switch unit 14 may turn on the second input branch 13 after receiving the third control signal, or the second switch unit 14 may turn off the second input branch 13 after receiving the fourth control signal.

[0070] In this embodiment, the second parameter signal detected by the second identification terminal 202 can be fed back to the second control terminal 22. The second control terminal 22 can determine whether the third control signal or the fourth control signal can be outputted currently according to the second preset range value. The third control signal can turn on the second input branch 13, and the fourth control signal can turn off the second input branch 13, so as to realize the judgment of the on-off condition of the second input branch 13.

[0071] It is worth noting that the second parameter signal may have a second preset range value, for example, the second preset range value may be 5 V to 12 V. When the second identification end 202 detects that the second parameter signal is within the second preset range value, the second control end 22 may output a third control signal, and when the second identification end 202 detects that the second parameter signal is not within the second preset range value, the second control end 22 may output a fourth control signal.

[0072] Among them, the second identification terminal 202 can be a USB charging voltage control port (USB Charging Voltage Control) in the first charging module 2. The second identification terminal 202 can be connected to the power supply terminal 1, and it can be identified that the voltage of the power supply terminal 1 belongs to which range of voltages among normal charging voltage, fast charging voltage or high-voltage fast charging voltage. Then, the second control terminal 22 can send a corresponding control signal according to the range of the charging voltage identified by the second identification terminal 202.

[0073] It is worth noting that the first charging module 2 may also have a USB bus power port (VBUS), and the VBUS port may provide USB power to the charge pump, and provide working power to the internal circuit of the charge pump and the charged battery. The first charging module 2 and the first input branch 11 may be connected through the VBUS port, so that the first input branch 11 provides current to the first charging module 2.

[0074] It is also worth noting that the second charging module 3 may also have a USB bus power port (VBUS), and the VBUS port of the second charging module 3 may provide USB power to the second charging module 3. The second charging module 3 and the second input branch 13 may also be connected through the VBUS port of the second charging module 3, so that the second input branch 13 provides current to the second charging module 3.

[0075] In some embodiments, the first switch unit 12 may be an N-channel field effect transistor, and / or the second switch unit 14 may be an N-channel field effect transistor.

[0076] In this embodiment, N-channel MOS field effect transistors are used as the first switch unit 12 and / or the second switch unit 14. On the one hand, since the manufacturing process of MOS tubes is mature and the cost is low, the charging circuit 100 can reduce the cost of the charging circuit 100 while realizing high-voltage fast charging. On the other hand, since the MOS tube has good conduction characteristics and low on-resistance, the switch conduction loss can be reduced and the efficiency of the charging circuit 100 can be improved. On the other hand, the N-channel MOS tube has the advantage of simple driving, and can be turned on and off by voltage driving, which is convenient to control.

[0077] In some embodiments, the first control signal and the third control signal may be high level signals, and the second control signal and the fourth control signal may be low level signals.

[0078] In this embodiment, the N-channel MOS field effect transistor can be turned on by the high level signals of the first control signal and the third control signal, and can be turned off by the low level signals of the second control signal and the fourth control signal, so as to control the first input branch 11 and the second input branch 13.

[0079] In some embodiments, Figure 2 As shown, the first switch unit 12 may include a first electrode 121, a second electrode 122 and a first control electrode 123, the first electrode 121 may be connected to the power supply terminal 1, the second electrode 122 may be connected to the first charging module 2, the first control electrode 123 may be connected to the first control terminal, and / or, the second switch unit 14 may include a third electrode 141, a fourth electrode 142 and a second control electrode 143, the third electrode 141 may be connected to the power supply terminal 1, the fourth electrode 142 may be connected to the second charging module 3, and the second control electrode 143 may be connected to the second control terminal 22.

[0080] It is worth noting that the first electrode 121 of the first switch unit 12 may be a drain of an N-channel field effect transistor, the second electrode 122 may be a source of an N-channel field effect transistor, and the first control electrode 123 may be a gate of an N-channel field effect transistor. The third electrode 141 of the second switch unit 14 may be a drain of an N-channel field effect transistor, the fourth electrode 142 may be a source of an N-channel field effect transistor, and the second control electrode 143 may be a gate of an N-channel field effect transistor.

[0081] In this embodiment, the first switch unit 12 and / or the second switch unit 14 can be controlled to be turned on or off by the difference in gate voltages of the first switch unit 12 and / or the second switch unit 14, which is convenient for control.

[0082] In some embodiments, the charging circuit 100 may further include a load (not shown), and the first charging module 2 and the second charging module 3 may be connected to the load.

[0083] In this embodiment, high-voltage fast charging of the charging circuit 100 can be achieved by connecting the load through the first charging module 2 , and constant-current charging of the charging circuit 100 can be achieved by connecting the load through the second charging module 3 .

[0084] Among them, the load can be a lithium-ion battery (Li-ion Battery), a nickel-metal hydride battery (Ni-MH Battery), a nickel-cadmium battery (Ni-Cd Battery), a lead-acid battery (Lead-acid Battery) or an alkaline battery (Alkaline Battery), etc., but the present disclosure does not specifically limit the type of load, that is, technical personnel in this field can adjust its type according to actual conditions, as long as the load can store charge and provide the terminal with the power required for operation.

[0085] Based on the same concept, the embodiment of the present disclosure may also provide a terminal, which may include the above-mentioned charging circuit 100.

[0086] Based on the same concept, the embodiment of the present disclosure may also provide a charging method, which may be applied to the above-mentioned charging circuit 100 .

[0087] Figure 3 FIG. 1 is a flow chart of a charging method according to an exemplary embodiment. Figure 3 As shown, the method in this embodiment may include the following steps S11, S12 and S121.

[0088] In step S11, an electrical signal from the power supply end is obtained.

[0089] The electrical signal of the power supply end may be a first signal or a second signal, and it may be determined whether the acquired electrical signal of the power supply end is the first signal or the second signal according to different voltage values ​​of the power supply end.

[0090] In step S12, when the electrical signal output by the power supply end is the first signal, the first switch unit is controlled to be turned on and the second switch unit is turned off, and the current of the power supply end flows to the first charging module.

[0091] In step S121, when the electrical signal output by the power supply end is the second signal, the first switch unit is controlled to be disconnected and the second switch unit is controlled to be turned on, and the current of the power supply end flows to the second charging module.

[0092] In this embodiment, the first switch unit can be turned on and the second switch unit can be turned off by a first signal output from the power supply end, so that the current of the power supply end can flow to the first charging module. Alternatively, the first switch unit can be turned off and the second switch unit can be turned on by a second signal output from the power supply end, so that the current of the power supply end can flow to the second charging module.

[0093] This embodiment realizes that when the voltage of the electrical signal input from the power supply end is too high, the first charging module can be turned on and the second charging module can be turned off, and then the first charging module with a voltage reduction function can be used to reduce the high voltage, thereby realizing high voltage protection for the charging circuit 100. Compared with the related art, the present disclosure does not need to use an OVP chip to switch the charging circuit on and off, thereby reducing the cost of the charging circuit.

[0094] Figure 4 FIG. 1 is a flowchart showing how to determine a signal output by a power supply terminal according to an exemplary embodiment. Based on the above embodiment, this embodiment takes how to determine a signal output by a power supply terminal as an example for exemplary description. Figure 4 As shown, after the electrical signal of the power supply end is obtained in the above step S11, the following steps S111 and S112 may also be included:

[0095] In step S111 , in response to the electrical signal of the power supply end being within a first threshold range, it is determined that the electrical signal output by the power supply end is a first signal.

[0096] In step S112, in response to the electrical signal of the power supply end being within a second threshold range, it is determined that the electrical signal output by the power supply end is a second signal.

[0097] Among them, the voltage output by the power supply end can be obtained through hardware. For example, in an exemplary case, a voltage divider resistor can be added to the back stage of the power supply end, and the output voltage of the power supply end can be calculated by the voltage divider ratio. However, the present disclosure is not limited to this. For example, in another exemplary case, the voltage of the power supply end can also be collected by using the ADC function of the microcontroller and the voltage sampling interface. The specific method of obtaining the voltage can be set according to the actual situation, and the present disclosure does not specifically limit the method of obtaining the output voltage of the power supply end.

[0098] It is worth noting that the preset threshold range can be set according to the voltage range of the normal charging mode, the fast charging mode or the high-voltage fast charging mode. For example, in an exemplary case, the voltage range of the normal charging mode and the fast charging mode can be set to the first threshold range, and the voltage range of the high-voltage fast charging mode can be set to the second threshold range. The voltage at the power supply end can be determined by comparison to be the voltage of the first threshold range or the voltage of the second threshold range.

[0099] It is worth noting that the voltage ranges of the normal charging mode, the fast charging mode or the high-voltage fast charging mode have been pointed out in the aforementioned embodiments and will not be elaborated here.

[0100] In some embodiments, the voltage at the power supply end may be collected by an ADC module, and then compared with a preset threshold value by a software program to determine the voltage range.

[0101] However, the present disclosure is not limited thereto, and in other embodiments, the voltage range may be determined by a digital voltage comparator with an integrated comparison function, and the digital voltage comparator may be connected to an MCU to implement voltage range determination.

[0102] It is also worth mentioning that the voltage at the power supply end may not be compared with the preset threshold range. For example, through circuit design, when the first charging module receives a voltage below 12V, the second switch unit is turned on and the first switch unit is disconnected. When the first charging module receives a voltage above 12V, the first switch unit is turned on and the second switch unit is disconnected.

[0103] Figure 5 This is a flowchart showing how to determine whether the voltage output by the power supply terminal is within the first threshold range or the second threshold range according to an exemplary embodiment. Based on the above embodiment, this embodiment takes how to determine whether the voltage output by the power supply terminal is within the first threshold range or the second threshold range as an example for exemplary description.

[0104] In some embodiments, Figure 5 As shown, in the above steps S11 to S111, the following step S109 may be further included, and in the above steps S11 to S112, the following step S110 may be further included:

[0105] In step S109 , the first threshold range is between 12V and 22V.

[0106] It can be understood that, in step S109, if the voltage output by the power supply end is in the range of 12V to 22V, it can be determined that the voltage is in the first threshold range.

[0107] It is worth noting that if the voltage output by the power supply terminal is in the range of 12V to 22V, it can be determined that the current voltage of the power supply terminal can be a voltage in the first threshold range. That is, the voltage in the first threshold range can be the voltage range output in the high-voltage fast charging mode. In other words, if the voltage output by the power supply terminal is the voltage range output in the high-voltage fast charging mode, it can be determined that the electrical signal output by the power supply terminal is the first signal.

[0108] In one possible case, if the voltage output by the power supply end is 12V, it can be determined that the voltage of the power supply end can be a voltage within the first threshold range. That is, it can be determined that the electrical signal output by the power supply end is a first signal. Then, according to the first signal output by the power supply end, the first switch unit can be controlled to be turned on and the second switch unit can be turned off, and the current of the power supply end can flow to the first charging module.

[0109] Alternatively, in another possible case, if the voltage output by the power supply end is 20V, it can also be determined that the voltage of the power supply end can be a voltage within the first threshold range. That is, it can be determined that the electrical signal output by the power supply end is the first signal. Then, according to the first signal output by the power supply end, the first switch unit can be controlled to be turned on and the second switch unit can be turned off, and the current of the power supply end can flow to the first charging module.

[0110] Alternatively, in other possible cases, if the voltage output by the power supply end is 22V, it can also be determined that the voltage of the power supply end can be a voltage within the first threshold range. That is, it can be determined that the electrical signal output by the power supply end is the first signal. Then, according to the first signal output by the power supply end, the first switch unit can be controlled to be turned on and the second switch unit can be turned off, and the current of the power supply end can flow to the first charging module.

[0111] In step S110 , the second threshold range is between 5V and 12V.

[0112] It can be understood that, in step S110, if the voltage output by the power supply end is in the range of 5V to 12V, it can be determined that the voltage is in the second threshold range.

[0113] It is worth noting that if the voltage output by the power supply terminal is in the range of 5V to 12V, it can be determined that the current voltage of the power supply terminal can be a voltage in the second threshold range. That is, the voltage in the second threshold range can be the voltage range output in the normal charging mode and the fast charging mode. In other words, if the voltage output by the power supply terminal is the voltage range output in the normal charging mode or the fast charging mode, it can be determined that the electrical signal output by the power supply terminal is the second signal.

[0114] In one possible case, if the voltage output by the power supply end is 5V, it can be determined that the voltage of the power supply end can be a voltage within the second threshold range. That is, it can be determined that the electrical signal output by the power supply end is the second signal. Then, according to the second signal output by the power supply end, the first switch unit can be controlled to be disconnected and the second switch unit can be turned on, and the current of the power supply end can flow to the second charging module.

[0115] Alternatively, in another possible case, if the voltage output by the power supply end is 10V, it can also be determined that the voltage of the power supply end can be a voltage within the second threshold range. That is, it can be determined that the electrical signal output by the power supply end is the second signal. Then, according to the second signal output by the power supply end, the first switch unit can be controlled to be disconnected and the second switch unit can be turned on, and the current of the power supply end can flow to the second charging module.

[0116] Alternatively, in other possible cases, if the voltage output by the power supply end is 12V, it can also be determined that the voltage of the power supply end can be a voltage within the second threshold range. That is, it can be determined that the electrical signal output by the power supply end is the second signal. Then, according to the second signal output by the power supply end, the first switch unit can be controlled to be disconnected and the second switch unit can be turned on, and the current of the power supply end can flow to the second charging module.

[0117] It should be noted that if the voltage output by the power supply end is 12V, it can be determined that the voltage output by the power supply end is within the first threshold range, or it can be determined that the voltage output by the power supply end is within the second threshold range. It can be understood that 12V can exist in either the first threshold range or the second threshold range, and the present disclosure does not specifically limit which range 12V belongs to, that is, those skilled in the art can adjust which threshold range 12V specifically belongs to according to actual conditions.

[0118] Figure 6 It is a flowchart of a charging method according to another exemplary embodiment. Based on the above embodiment, this embodiment exemplifies that the charging method further includes the step of adjusting the voltage attenuation ratio of the first charging module according to the temperature of the terminal.

[0119] like Figure 6 As shown, in the above step S12, when the electrical signal output by the power supply end is the first signal, the first switch unit is controlled to be turned on and the second switch unit is turned off, and the current of the power supply end flows to the first charging module, the following step S13 may also be included:

[0120] In step S13, the voltage attenuation ratio of the first charging module of the charging circuit is adjusted according to the temperature of the terminal.

[0121] It is worth noting that when the first charging module is used to perform high-voltage fast charging on the load in the charging circuit, more charging power will be generated, but more heat will also be generated.

[0122] In this embodiment, when the terminal temperature is too high, the battery and the terminal can be prevented from being damaged by overheating by reducing the charging power, making the charging process safer and more reliable. For example, the current power after passing through the first charging module can be reduced by increasing the attenuation of the voltage passing through the first charging module to reduce the heating of the terminal.

[0123] It is worth noting that the temperature of the terminal can be the temperature of the entire terminal surface or the temperature of the power supply in the terminal. The present disclosure does not specifically limit the specific location or category of the temperature to be obtained. As long as the temperature at the location in the terminal is too high and affects the normal use of the terminal, it can be used as a reference temperature in step S13 of the present disclosure.

[0124] The present disclosure can adjust the charging voltage by obtaining the real-time temperature of the terminal to avoid overheating of the entire terminal due to excessive charging voltage. The temperature of the terminal can be obtained through hardware, such as obtaining the current temperature data of the terminal through a sensor. At the same time, it can also be obtained at the software level such as the operating system and application program, and read through specific API functions and the like. The specific method can be set according to the actual situation, and the present disclosure does not specifically limit the method of obtaining the terminal temperature.

[0125] In some embodiments, the voltage attenuation ratio of the first charging module of the charging circuit is adjusted according to the temperature of the terminal and is determined in the following manner: if the terminal temperature is higher than the temperature threshold, the voltage attenuation ratio of the first charging module of the charging circuit is increased, wherein the temperature threshold is a set threshold.

[0126] It is worth noting that a temperature threshold can be set in the terminal. For example, the temperature threshold can be a temperature that affects the normal operation of the terminal, or a temperature obtained based on an experiment, or a temperature set based on experience. For another example, the temperature threshold can also be set to 35°. It is worth noting that the present disclosure does not specifically limit the specific value of the temperature threshold, that is, those skilled in the art can set or adjust it according to actual conditions.

[0127] It is worth noting that the terminal can obtain the real-time temperature through hardware, and can compare the real-time temperature with the set temperature threshold. If the comparison result is that the real-time temperature is higher than the temperature threshold, the voltage attenuation ratio of the first charging module can be increased.

[0128] In an exemplary embodiment, the first charging module may be a 4:1 Charge Pump in the initial state. When the real-time temperature of the terminal is higher than the set temperature threshold, the voltage attenuation ratio may be increased by adjusting the configuration of the first charging module. For example, when the real-time temperature of the terminal is higher than the temperature threshold, the 4:1 Charge Pump may be adjusted to a 2:1 Charge Pump, but the present disclosure does not specifically limit the attenuation ratio of the Charge Pump, that is, those skilled in the art may adjust the ratio according to actual conditions, as long as the terminal temperature can be reduced by adjusting the voltage reduction ratio of the first charging module.

[0129] In this embodiment, the voltage attenuation ratio of the first charging module can be adjusted to adaptively adjust the charging power when the terminal temperature is too high, thereby preventing the terminal from heating up due to excessive charging power and avoiding the risk of terminal overheating.

[0130] Figure 7 This is a flow chart of a charging method according to another exemplary embodiment. Based on the above embodiment, this embodiment is exemplified by the step of adjusting the voltage attenuation ratio of the first charging module of the charging circuit according to the charging state of the terminal.

[0131] like Figure 7 As shown, in the above step S12, when the electrical signal output by the power supply end is the first signal, the first switch unit is controlled to be turned on and the second switch unit is turned off, and the current of the power supply end flows to the first charging module, the following step S14 may also be included:

[0132] In step S14, the voltage attenuation ratio of the first charging module of the charging circuit is adjusted according to the charging state of the terminal.

[0133] It is worth noting that in the charging circuit, when the terminal enters the late charging stage, the battery voltage of the terminal tends to be saturated, and further high-voltage charging of the battery will cause the risk of battery damage.

[0134] Among them, the charging status of the terminal can be determined according to the current charge value in the battery of the terminal, or according to the length of the charging time of the terminal, but the present disclosure does not specifically limit the method of determining the charging status, that is, technical personnel in this field can set the determination method according to actual conditions.

[0135] In this embodiment, the voltage attenuation ratio of the first charging module of the charging circuit can be adjusted according to the charging state of the terminal. That is, when the battery of the terminal enters the late charging stage, the voltage output by the first charging module can be reduced, thereby reducing the high voltage for charging the battery, reducing the fast charging intensity, and ensuring the healthy state of the battery.

[0136] In some embodiments, the voltage attenuation ratio of the first charging module of the charging circuit is adjusted according to the charging state of the terminal in the following manner: if the charge amount in the terminal is higher than the first charge threshold, the attenuation ratio of the second charging branch of the charging circuit is increased.

[0137] Among them, the first charge threshold may be a preset first charge threshold, that is, the first charge threshold may be a pre-set charge amount in the battery. In other words, the charge value may represent the charging state of the battery. For example, the first charge threshold may be a charge threshold obtained according to an experiment, that is, when the charge value is high, it represents that the battery charging has entered the later stage, and when the charge value is low, it represents that the battery charging has not entered the later stage. However, the present disclosure is not limited to obtaining the charge threshold according to experiments, and the charge threshold may also be set according to experience, that is, those skilled in the art may set the charge threshold according to actual conditions.

[0138] If the amount of charge in the battery of the terminal is higher than the first charge threshold, the attenuation ratio of the first charging module is increased. That is, the intensity of high-voltage fast charging is reduced to prevent the battery from being damaged by high-voltage charging. For example, when the amount of charge in the battery of the terminal is higher than the first charge threshold, the 4:1 Charge Pump can be adjusted to a 2:1 Charge Pump, but the present disclosure is not limited thereto, that is, those skilled in the art can adjust the ratio according to actual conditions, as long as it can be achieved by adjusting the step-down ratio of the first charging module to reduce the voltage intensity of the charging circuit.

[0139] Figure 8 It is a flowchart of a charging method according to another exemplary embodiment. This embodiment is based on the above embodiment and exemplarily illustrates the step that if the amount of charge in the terminal is higher than the second charge threshold, the first switch unit is controlled to be disconnected and the second switch unit is controlled to be turned on, and the current at the power supply end flows to the second charging module.

[0140] like Figure 8 As shown, in the above step S12, when the electrical signal output by the power supply end is the first signal, the first switch unit is controlled to be turned on and the second switch unit is turned off, and the current of the power supply end flows to the first charging module, the following step S15 may also be included:

[0141] In step S15, if the charge amount in the terminal is higher than the second charge threshold, the first switch unit is controlled to be disconnected and the second switch unit is controlled to be turned on, and the current at the power supply end flows to the second charging module.

[0142] It should be noted that the second charge threshold may be set the same as the first charge threshold in the aforementioned embodiment, and will not be described in detail herein.

[0143] It is worth noting that in the charging circuit, after the high-voltage fast charge is completed, constant voltage (CV) charging is required. Constant voltage can charge the battery to the maximum extent, and it is the last stage of lithium battery charging. Therefore, the second charge threshold set in the above can be the basis for determining whether the high-voltage fast charge is completed. That is, when the amount of charge in the battery reaches the second charge threshold, it is determined that the high-voltage fast charge has been completed. At this time, the first switch unit can be controlled to disconnect and the second switch unit can be turned on to disconnect the high-voltage fast charge mode and switch to the normal charging mode of the second charging module to charge the battery at a constant voltage to charge the battery to the maximum extent.

[0144] The charging method provided in the embodiment of the present disclosure can determine which mode of charging, namely, the normal charging mode, the fast charging mode or the high-voltage fast charging mode, to use to charge the load based on the voltage at the current power supply end. It can implement wired fast charging on a charging chip that does not support the high-voltage fast charging mode, thereby improving the charging efficiency. It uses a switching unit to replace the OVP chip in the related technology, thereby reducing costs and energy loss.

[0145] Based on the same concept, an embodiment of the present disclosure also provides a charging device.

[0146] It is understandable that in order to realize the above functions, the charging device provided in the embodiment of the present disclosure includes hardware structures and / or software modules corresponding to the execution of each function. In combination with the units and algorithm steps of each example disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiment of the present disclosure.

[0147] Fig. 9 is a block diagram of a charging device according to an exemplary embodiment. Fig. 9 The charging device may include an acquisition module 101 and an execution module 102.

[0148] The acquisition module 101 may be configured to acquire an electrical signal from a power supply end.

[0149] The execution module 102 can be configured to control the first switch unit to be turned on and the second switch unit to be turned off when the electrical signal output by the power supply end is a first signal, and the current at the power supply end flows to the first charging module; when the electrical signal output by the power supply end is a second signal, control the first switch unit to be turned off and the second switch unit to be turned on, and the current at the power supply end flows to the second charging module.

[0150] In some embodiments, the acquisition module 101 may also include a determination unit (not shown), which is configured to determine that the electrical signal output by the power supply end is a first signal in response to the output voltage of the power supply end being in a first threshold range, and to determine that the electrical signal output by the power supply end is a second signal in response to the output voltage of the power supply end being in a second threshold range.

[0151] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0152] Fig.10 800 is a block diagram of a terminal according to an exemplary embodiment. For example, the terminal 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0153] Reference Fig.10 , the terminal 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0154] The processing component 802 generally controls the overall operation of the terminal 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0155] The memory 804 is configured to store various types of data to support operations at the terminal 800. Examples of such data include instructions for any application or method operating on the terminal 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as a static random access memory (SRAM), an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a programmable read-only memory (PROM), a read-only memory (ROM), a magnetic memory, a flash memory, a magnetic disk, or an optical disk.

[0156] Power component 806 provides power to various components of terminal 800. Power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to terminal 800.

[0157] The multimedia component 808 includes a screen that provides an output interface between the terminal 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the terminal 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and the rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0158] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the terminal 800 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0159] I / O interface 812 provides an interface between processing component 802 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.

[0160] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the terminal 800. For example, the sensor assembly 814 can detect the open / closed state of the terminal 800, the relative positioning of the components, such as the display and keypad of the terminal 800, and the sensor assembly 814 can also detect the position change of the terminal 800 or a component of the terminal 800, the presence or absence of contact between the user and the terminal 800, the orientation or acceleration / deceleration of the terminal 800 and the temperature change of the terminal 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 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 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

[0161] The communication component 816 is configured to facilitate wired or wireless communication between the terminal 800 and other devices. The terminal 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 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 816 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.

[0162] In an exemplary embodiment, terminal 800 can 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 to perform the above methods.

[0163] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by a processor 820 of the terminal 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0164] Fig.11 1 is a block diagram of a device 1100 for image processing according to an exemplary embodiment. For example, the device 1100 may be provided as a server. Fig.11, the apparatus 1100 includes a processing component 1122, which further includes one or more processors, and a memory resource represented by a memory 1132 for storing instructions, such as applications, that can be executed by the processing component 1122. The application stored in the memory 1132 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 1122 is configured to execute instructions to perform the above method.

[0165] The device 1100 may also include a power supply component 1126 configured to perform power management of the device 1100, a wired or wireless network interface 1150 configured to connect the device 1100 to a network, and an input / output (I / O) interface 1158. The device 1100 may operate based on an operating system stored in the memory 1132, such as Windows Server™, MacOS X™, Unix™, Linux™, FreeBSD™, or the like.

[0166] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0167] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0168] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0169] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0170] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0171] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modifications, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure.

[0172] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A charging circuit, characterized in that: include: Power supply end; A first charging module, connected to the power supply end via a first input branch, wherein the first input branch is provided with a first switch unit; as well as A second charging module is connected to the power supply end via a second input branch, wherein the second input branch is provided with a second switch unit, The first charging module is connected to the second switch unit. The first charging module controls the first switch unit to be turned on and the second switch unit to be turned off according to the first signal output by the power supply end, and the current of the power supply end flows to the first charging module. The first charging module controls the first switch unit to be disconnected and the second switch unit to be turned on according to the second signal output by the power supply end, so that the current of the power supply end flows to the second charging module.

2. The charging circuit according to claim 1, characterized in that: The first charging module includes a charge pump. When the electrical signal passes through the first charging module, the voltage of the electrical signal attenuates.

3. The charging circuit according to claim 1, characterized in that: The first charging module comprises: an identification end connected to the power supply end, the identification end being used to detect whether the signal output by the power supply end is the first signal or the second signal; A first control terminal connected to the first switch unit; and The second control terminal is connected to the second switch unit.

4. The charging circuit according to claim 3, characterized in that: The identification terminal includes: a first identification end, wherein the first identification end detects that the electrical signal of the power supply end is a first parameter signal, and the first charging module outputs a first control signal or a second control signal through the first control end according to the first parameter signal; The first switch unit turns on the first input branch after receiving the first control signal, or the first switch unit turns off the first input branch after receiving the second control signal.

5. The charging circuit according to claim 4, characterized in that: The identification terminal also includes: a second identification end, wherein the second identification end detects that the electrical signal of the power supply end is a second parameter signal, and the first charging module outputs a third control signal or a fourth control signal through the second control end according to the second parameter signal; The second switch unit turns on the second input branch after receiving the third control signal, or the second switch unit turns off the second input branch after receiving the fourth control signal.

6. The charging circuit according to claim 5, characterized in that: The first control signal and the third control signal are high level signals; The second control signal and the fourth control signal are low level signals.

7. The charging circuit according to claim 1, characterized in that: The first switch unit is an N-channel field effect transistor, and / or The second switch unit is an N-channel field effect transistor.

8. The charging circuit according to claim 7, characterized in that: The first switch unit includes a first electrode, a second electrode and a first control electrode, the first electrode is connected to the power supply end, the second electrode is connected to the first charging module, and the first control electrode is connected to the first control end; and / or The second switch unit includes a third electrode, a fourth electrode and a second control electrode, the third electrode is connected to the power supply end, the fourth electrode is connected to the second charging module, and the second control electrode is connected to the second control end.

9. The charging circuit according to claim 1, characterized in that: The second charging module is a power management integrated circuit PMIC.

10. The charging circuit according to claim 1, characterized in that: Also includes: A load, the first charging module and the second charging module are connected to the load.

11. A terminal, characterized in that: include: A charging circuit as claimed in any one of claims 1 to 10.

12. A charging method, characterized in that: Applied to the charging circuit according to any one of claims 1 to 10, the method comprises: Obtaining an electrical signal from a power supply end; When the electrical signal output by the power supply end is a first signal, the first switch unit is controlled to be turned on and the second switch unit is turned off, so that the current of the power supply end flows to the first charging module; When the electrical signal output by the power supply end is the second signal, the first switch unit is controlled to be disconnected and the second switch unit is controlled to be turned on, and the current of the power supply end flows to the second charging module.

13. The method according to claim 12, further comprising: In response to the electrical signal of the power supply end being within a first threshold range, determining that the electrical signal output by the power supply end is a first signal; In response to the electrical signal of the power supply end being within a second threshold range, determining that the electrical signal output by the power supply end is a second signal.

14. The method according to claim 13, characterized in that The first threshold range is between 12V and 22V; and / or, The second threshold range is between 5V and 12V.

15. The method according to claim 12, characterized in that According to the first signal output by the power supply end, the first switch unit is controlled to be turned on and the second switch unit is turned off, so that the current of the power supply end flows to the first charging module, and the method further includes: The voltage attenuation ratio of the first charging module is adjusted according to the temperature of the terminal.

16. The method according to claim 15, characterized in that The voltage attenuation ratio of the first charging module is adjusted according to the temperature of the terminal in the following manner: If the terminal temperature is higher than the temperature threshold, the voltage attenuation ratio of the first charging module is increased.

17. The method according to claim 12, characterized in that According to the first signal output by the power supply end, the first switch unit is controlled to be turned on and the second switch unit is turned off, so that the current of the power supply end flows to the first charging module, and the method further includes: The voltage attenuation ratio of the first charging module is adjusted according to the charging state of the terminal.

18. The method according to claim 17, characterized in that The voltage attenuation ratio of the first charging module is adjusted according to the charging state of the terminal in the following manner: If the charge amount in the terminal is higher than the first charge threshold, the voltage attenuation ratio of the first charging module is increased.

19. The method according to claim 15 or 17, characterized in that: According to the first signal output by the power supply end, the first switch unit is controlled to be turned on and the second switch unit is turned off, so that the current of the power supply end flows to the first charging module, and the method further includes: If the charge amount in the terminal is higher than the second charge threshold, the first switch unit is controlled to be disconnected and the second switch unit is controlled to be turned on, and the current of the power supply end flows to the second charging module.

20. A charging device, characterized in that: Applied to a terminal, the terminal comprising the charging circuit according to any one of claims 1 to 10, the charging device comprising: An acquisition module, used for acquiring an electrical signal from a power supply end; The execution module is used to control the first switch unit to be turned on and the second switch unit to be turned off when the electrical signal output by the power supply end is a first signal, and the current of the power supply end flows to the first charging module; when the electrical signal output by the power supply end is a second signal, control the first switch unit to be turned off and the second switch unit to be turned on, and the current of the power supply end flows to the second charging module.

21. The device according to claim 20, characterized in that The acquisition module also includes: a determining unit, configured to determine that the electrical signal output by the power supply end is a first signal in response to the output voltage of the power supply end being within a first threshold range; In response to the output voltage of the power supply end being within a second threshold range, the electrical signal output by the power supply end is determined to be a second signal.

22. A terminal, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the charging method as described in any one of claims 12 to 19.

23. A computer storage medium, characterized in that include: When the instructions in the computer storage medium are executed by a processor of the terminal, the terminal is enabled to perform the charging method according to any one of claims 12 to 19.

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