CN111711238A - Charging control method, electronic device, and computer-readable storage medium - Google Patents
Charging control method, electronic device, and computer-readable storage medium Download PDFInfo
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- CN111711238A CN111711238A CN202010508039.XA CN202010508039A CN111711238A CN 111711238 A CN111711238 A CN 111711238A CN 202010508039 A CN202010508039 A CN 202010508039A CN 111711238 A CN111711238 A CN 111711238A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
Abstract
The application discloses a charging control method, an electronic device and a computer-readable storage medium. The charging control method provided by the embodiment of the application comprises the following steps: acquiring the initial temperature of the output end of a charging wire; controlling the input current of a charging wire to be initial current, wherein the initial current is in a preset range; acquiring initial impedance of a charging wire according to a voltage difference between initial input voltage of an input end of the charging wire and initial output voltage of an output end of the charging wire and initial current; the power of the previous moment is adjusted up to obtain the current charging power of the electronic equipment; acquiring the current impedance of the charging line according to the voltage difference between the current input voltage of the input end of the charging line and the current output voltage of the output end of the charging line and the current of the charging line; acquiring the current temperature of a charging wire according to the current impedance, the initial temperature and a preset mapping relation between the temperature and the resistivity of the charging wire; and controlling the charging power of the electronic equipment according to the current temperature.
Description
Technical Field
The present disclosure relates to the field of charging technologies, and in particular, to a charging control method, an electronic device, and a computer-readable storage medium.
Background
The development of electronic devices is now fast charging is always the direction of pursuit of various manufacturers and consumers. With the pursuit of the charging speed of electronic devices, the charging power is increasing, and the security challenge of charging is also increasing. One of the outstanding security problems is that charging generates heat, and especially when a user uses a non-standard charging wire (such as thin and short) to connect a mobile phone and an adapter for charging, the electronic device still controls the charging power according to the standard of the standard charging wire, and under the condition, the high-power charging easily causes abnormal heating of the circuit of the charging wire, even burning, and causes safety accidents.
Disclosure of Invention
The embodiment of the application provides a charging control method, an electronic device and a non-volatile computer-readable storage medium containing a computer program.
The charging control method provided by the embodiment of the application comprises the following steps: when a charging wire is connected with electronic equipment, acquiring the initial temperature of the output end of the charging wire; controlling the input current of the charging wire to be initial current, wherein the initial current is within a preset range; acquiring initial impedance of the charging wire according to the initial current and a voltage difference between an initial input voltage of an input end of the charging wire and an initial output voltage of an output end of the charging wire; the power of the previous moment is adjusted up to obtain the current charging power of the electronic equipment, and the electronic equipment is charged by the current charging power of the electronic equipment; acquiring the current impedance of the charging wire according to the voltage difference between the current input voltage of the input end of the charging wire and the current output voltage of the output end of the charging wire and the current of the charging wire; acquiring the current temperature of the charging wire according to the current impedance, the initial temperature and a preset mapping relation between the temperature and the resistivity of the charging wire; and controlling the charging power of the electronic equipment according to the current temperature.
The electronic equipment provided by the embodiment of the application comprises a temperature sensor, a processor and a control circuit. When the charging wire meets with electronic equipment, temperature sensor is used for acquireing the initial temperature of the output of charging wire. The processor is configured to: controlling the control circuit to enable the input current of the charging wire to be an initial current, wherein the initial current is within a preset range; acquiring an initial impedance of the charging wire according to a voltage difference between an initial input voltage of an input end of the charging wire and an initial output voltage of an output end of the charging wire and the initial current, wherein the magnitude of the initial current is controlled by the processor; adjusting the current charging power of the electronic equipment to enable the current charging power to be larger than the initial charging power of the electronic equipment when the electronic equipment is charged by adopting the initial current; acquiring the current impedance of the charging wire according to the voltage difference between the current input voltage of the input end of the charging wire and the current output voltage of the output end of the charging wire and the current of the charging wire; acquiring the current temperature of the charging wire according to the current impedance, the initial temperature and a preset mapping relation between the temperature and the resistivity of the charging wire; and charging the electronic equipment according to the current temperature.
In a non-transitory computer-readable storage medium containing a computer program provided in an embodiment of the present application, when the computer program is executed by a processor, the processor is caused to execute a charging control method. The charging control method comprises the following steps: when a charging wire is connected with electronic equipment, acquiring the initial temperature of the output end of the charging wire; controlling the input current of the charging wire to be initial current, wherein the initial current is within a preset range; acquiring initial impedance of the charging wire according to the initial current and a voltage difference between an initial input voltage of an input end of the charging wire and an initial output voltage of an output end of the charging wire; the power of the previous moment is adjusted up to obtain the current charging power of the electronic equipment, and the electronic equipment is charged by the current charging power of the electronic equipment; acquiring the current impedance of the charging wire according to the voltage difference between the current input voltage of the input end of the charging wire and the current output voltage of the output end of the charging wire and the current of the charging wire; acquiring the current temperature of the charging wire according to the current impedance, the initial temperature and a preset mapping relation between the temperature and the resistivity of the charging wire; and controlling the charging power of the electronic equipment according to the current temperature.
According to the charging control method, the electronic device and the computer readable storage medium, the current temperature of the charging wire is obtained through the current impedance, the initial temperature and the preset mapping relation between the temperature and the resistivity of the charging wire, and the charging power of the electronic device is controlled according to the current temperature, so that the charging power can be adjusted and controlled by monitoring the temperature of the circuit of the charging wire, abnormal heating of the charging wire can be effectively prevented, combustion of the charging wire due to overheating is prevented, and safety accidents can be avoided.
Additional aspects and advantages of embodiments of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is an interactive schematic view of an electronic device, a charging cord, and a power supply apparatus according to some embodiments of the present application;
FIG. 2 is a schematic flow chart diagram of a charge control method according to some embodiments of the present application;
FIG. 3 is a schematic diagram of the internal structure of an electronic device according to some embodiments of the present application;
FIG. 4 is a schematic diagram of a charging process of an electronic device and a charging control method of some embodiments of the present application;
FIG. 5 is a schematic diagram of a charging circuit according to some embodiments of the present application;
FIG. 6 is a schematic flow chart diagram of a charge control method according to certain embodiments of the present application;
FIG. 7 is a graphical illustration of a temperature versus resistivity mapping according to certain embodiments of the present application;
FIG. 8 is a schematic diagram of a charging circuit according to some embodiments of the present application;
FIG. 9 is a schematic diagram of a charging circuit according to some embodiments of the present application;
FIG. 10 is a schematic diagram of a charging circuit according to some embodiments of the present application;
FIG. 11 is a schematic diagram of an internal structure of an electronic device according to some embodiments of the present application;
FIG. 12 is a schematic flow chart diagram of a charge control method according to certain embodiments of the present application;
FIG. 13 is a schematic flow chart diagram of a charge control method according to certain embodiments of the present application;
FIG. 14 is a schematic flow chart diagram of a charge control method according to certain embodiments of the present application;
FIG. 15 is a schematic diagram of the interaction of a non-volatile computer readable storage medium and a processor of certain embodiments of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the embodiments of the present application, and are not to be construed as limiting the embodiments of the present application.
Referring to fig. 1 and 2, a charging control method according to an embodiment of the present disclosure includes:
01: acquiring an initial temperature of an output end 2200 of the charging line 2000 when the charging line 2000 is connected with the electronic device 1000;
02: controlling the input current of the charging wire 2000 to be an initial current, wherein the initial current is in a preset range;
03: acquiring an initial impedance of the charging line 2000 according to a voltage difference between an initial input voltage at the input terminal 2100 of the charging line 2000 and an initial output voltage at the output terminal 2200 of the charging line 2000 and an initial current;
04: the power of the previous moment is adjusted up to obtain the current charging power of the electronic device 1000, and the electronic device 1000 is charged by using the current charging power of the electronic device 1000;
05: acquiring the current impedance of the charging line 2000 according to the voltage difference between the current input voltage of the input end 2100 of the charging line 2000 and the current output voltage of the output end 2200 of the charging line 2000 and the current of the charging line 2000;
06: acquiring the current temperature of the charging line 2000 according to the current impedance, the initial temperature and a preset mapping relation between the temperature and the resistivity of the charging line 2000; and
07: the charging power of the electronic device 1000 is controlled according to the current temperature.
Referring to fig. 1 and fig. 3, an electronic device 1000 according to an embodiment of the present disclosure includes a temperature sensor 10, a processor 30, and a control circuit 40. The temperature sensor 10 may be used to perform the method of 01. The processor 30 may be used to execute the methods in 02, 03, 04, 05, 06, and 07.
That is, when the charging line 2000 is connected to the electronic device 1000, the temperature sensor 10 is used to obtain the initial temperature of the output end 2200 of the charging line 2000. The processor 30 is configured to: controlling the control circuit 40 to make the input current of the charging wire 2000 be the initial current, wherein the initial current is in a preset range; acquiring an initial impedance of the charging line 2000 according to a voltage difference between an initial input voltage at the input terminal 2100 of the charging line 2000 and an initial output voltage at the output terminal 2200 of the charging line 2000 and an initial current, the magnitude of the initial current being controlled by the processor 30; adjusting the current charging power of the electronic device 1000 so that the current charging power is greater than the initial charging power of the electronic device 1000 when the electronic device 1000 is charged with the initial current; acquiring the current impedance of the charging line 2000 according to the voltage difference between the current input voltage of the input end 2100 of the charging line 2000 and the current output voltage of the output end 2200 of the charging line 2000 and the current of the charging line 2000; acquiring the current temperature of the charging line 2000 according to the current impedance, the initial temperature and a preset mapping relation between the temperature and the resistivity of the charging line 2000; and charging the electronic device 1000 according to the current temperature.
According to the charging control method and the electronic device 1000 in the embodiment of the application, the current temperature of the charging line 2000 is obtained through the current impedance, the initial temperature and the preset mapping relation between the temperature and the resistivity of the charging line 2000, and the charging power of the electronic device 1000 is controlled according to the current temperature, so that the charging power can be adjusted and controlled by monitoring the temperature of the line of the charging line 2000, abnormal heating of the charging line 2000 can be effectively prevented, burning of the charging line 2000 due to overheating can be prevented, and safety accidents can be avoided.
With continued reference to fig. 1 and 3, the electronic device 1000 may include a charging system 100 and a housing 200. The electronic device 1000 may be a mobile phone, a tablet computer, a notebook computer, a game machine, a smart watch, a smart bracelet, a head display device, an unmanned aerial vehicle, a Digital Still Camera (DSC), a Digital Video recorder (DVC), a driving recorder, or other devices that require power. In the embodiment of the present application, the electronic device 1000 is a mobile phone as an example, and it is understood that the specific form of the electronic device 1000 is not limited to the mobile phone. The housing 200 may support, connect, protect, etc. the internal components of the electronic device 1000. The housing 200 may also be used to mount functional system modules of the electronic device 1000, such as the charging system 100, the imaging system, and the communication system, so that the housing 200 provides protection for the functional system modules against dust, falling, water, and the like. The material of the housing 200 may be plastic, metal, glass, etc., and is not limited herein.
The charging wire 2000 may include a power transmission line. An input end 2100 of the charging wire 2000 (which refers to an input end of an electric energy transmission line of the charging wire 2000, which is the same as that described later) may be connected to an output end of a power supply device 3000 such as a power adapter or a charging head, a charger, and the like, for supplying electric energy, where an input end of the power supply device 3000 such as the power adapter or the charging head may be a commercial power.
An output terminal 2200 of the charging cord 2000 (referring to an output terminal of the power transmission line of the charging cord 2000, which will be the same hereinafter) may be connected to the interface 20 of the electronic device 1000 to charge the electronic device 1000 through the charging system 100. Specifically, before or just after the charging starts, the temperature sensor 10 or other elements capable of detecting the temperature may acquire the initial temperature of the output end 2200 of the charging line 2000 when the charging line 2000 is connected to the electronic device 1000. The obtaining of the initial temperature of the output end 2200 of the charging line 2000 may be directly obtaining the initial temperature of the output end 2200 of the charging line 2000, obtaining a temperature at a junction of the charging line 2000 and the electronic device 1000 as the initial temperature, or obtaining a temperature of the interface 20 of the electronic device 1000 as the initial temperature. Correspondingly, the temperature sensor 10 may be within a preset range of the output end 2200 of the charging wire 2000; the temperature sensor 10 is arranged at the joint of the charging wire 2000 and the electronic device 1000; or the temperature sensor 10 is provided at the interface 20 of the electronic device 1000. That is, the temperature sensor 10 or other elements capable of detecting temperature may be directly in contact with the output end 2200 of the charging line 2000, the junction between the charging line 2000 and the electronic device 1000, or the interface 20 of the electronic device 1000, or may be located at the output end 2200 of the charging line 2000, the junction between the charging line 2000 and the electronic device 1000, or near the interface 20 of the electronic device 1000, within a predetermined spatial distance, which is beneficial to enable the temperature sensor 10 to accurately measure or accurately equivalently measure the initial temperature R0 of the output end 2200 of the charging line 2000, and since the electronic device 1000 does not start charging or just starts charging with a small current at this time, the charging line 2000 does not start to generate heat or generates heat slightly enough to be ignored, so that the initial temperature R0 may be regarded as the initial temperature R0 of the charging line 2000, that is, the initial temperature R0 of the electric energy of the charging line 2000, can be favorable to improving follow-up accuracy to current temperature calculation to prevent charging wire 2000's unusual the generating heat better, prevent that charging wire 2000 from taking place the burning because of overheated, thereby can avoid the emergence of incident.
In some embodiments, the initial temperature of the output end 2200 of the charging line 2000 is obtained before the charging is started, and it may not be necessary to require that the time of obtaining the initial temperature coincides with the time of controlling the input current of the charging line 2000 to be the initial current, which is beneficial to avoiding the problems of design and control of the timing sequence of the time of obtaining the initial temperature and the time of controlling the input current of the charging line 2000 to be the initial current, and is beneficial to reducing the difficulty of design.
Referring to fig. 3, the charging system 100 may include a temperature sensor 10, an interface 20, a processor 30, a control circuit 40, a current detection unit 50, a voltage detection unit 60, and a battery 70.
The time for the control circuit 40 to control the input current of the charging line 2000 to be kept as the initial current can be short, and only the initial input voltage and the initial output voltage can be effectively obtained within the time for the input current to be kept as the initial current.
Referring to fig. 4, after the initial impedance R0 of the charging line 2000 is obtained, the charging control method and the electronic device 1000 according to the embodiment of the present application may adjust up the power at the previous time to obtain the current charging power of the electronic device 1000, and charge the electronic device 1000 with the current charging power of the electronic device 1000. In a practical example, the charging control method and the electronic device 1000 according to the embodiments of the present application may gradually adjust up the power at the previous time to obtain the current charging power of the electronic device 1000, that is, gradually adjust up the current charging power of the electronic device 1000 by adjusting up one gear so that the current charging power of the electronic device 1000 can gradually increase after the initial impedance R0 of the charging line 2000 is obtained, and the temperature of the charging line 2000 may increase accordingly, and then the charging control method and the electronic device 1000 according to the current temperature may control the charging power of the electronic device 1000 through the processor 30, which is beneficial to make the charging process always be in a state that the current temperature Ti does not exceed the temperature threshold, and the current charging power does not exceed the maximum charging power of the electronic device 1000, so that the electronic device 1000 can be charged quickly and safely, the safety accident caused by abnormal heating of the wire of the charging wire 2000 can be effectively avoided.
Referring to fig. 4, during the charging process, the charging control method and the electronic device 1000 according to the embodiment of the present invention may periodically obtain the current impedance Ri of the charging line 2000 according to the voltage difference Δ V between the current input voltage V1 of the input terminal 2100 of the charging line 2000 and the current output voltage V2 of the output terminal 2200 of the charging line 2000 and the current Ii of the charging line 2000. The detection period of the present impedance may be set to 0.5s, 1s, 2s, or the like. In a specific example, the charging line 2000 may include a data transmission line along with a power transmission line. The charging control method and the electronic device 1000 according to the embodiment of the present application may periodically obtain the current input voltage V1 of the input terminal 2100 of the charging line 2000 through the data transmission line of the charging line 2000. In other embodiments, the charging control method and the electronic device 1000 according to the embodiments of the present application may also periodically obtain the current input voltage V1 of the input terminal 2100 of the charging line 2000 through other communication methods. Referring to fig. 3 and 5, the charging control method and the electronic device 1000 according to the embodiments of the application may periodically measure the current of the charging line 2000 to obtain the current Ii of the charging line 2000. In a specific example, the charging control method and the electronic device 1000 according to the embodiments of the present application may periodically measure the current of the control circuit 40, and use the current as the current of the charging line 2000. It can be understood that control circuit 40 and charging wire 2000 are the series relation, therefore control circuit 40's present electric current can have fine equivalent effect with charging wire 2000's present electric current, when being favorable to improving the convenience that detects, is favorable to improving the detection precision of present impedance.
For example, please continue to refer to fig. 3 and 5, the charging control method and the electronic device 1000 of the present embodiment may periodically obtain the current input voltage of the input terminal 2100 of the charging line 2000 as V1 through the data transmission line of the charging line 2000, simultaneously measure the voltage of the output terminal 2200 of the charging line 2000 through the voltage detection unit 60, obtain the current output voltage of the output terminal 2200 of the charging line 2000 as V2, simultaneously measure the current of the charging line 2000 through the current detection unit 50, to obtain the current of the charging line 2000, and then obtain the current of the charging line 2000 through the current input voltage V1 of the charging line 2000 and the current output voltage V2 of the charging line 2000iAnd the current impedance Ri of the charging line 2000 is obtained according to ohm's law, the current impedance can be rapidly and accurately calculated with smaller calculation amount, and the temperature can be improvedThe real-time nature of degree monitoring to can avoid the wire rod of charging wire 2000 overheated better.
In some embodiments, referring to fig. 5, the current detection unit 50 and the control circuit 40 may be connected in series and separately. In some embodiments, referring to fig. 8, the current detection unit 50 may include a first current detection unit 51 and a second current detection unit 52. The first current detection unit 51 may be connected in series with the first control circuit 41 on the same circuit and separately provided from the first control circuit 41. The second current detection unit 52 may be connected in series with the second control circuit 42 on the same loop and provided separately from the second control circuit 42. The current detection unit 50 and the control circuit 40 are connected in series on the same loop and are respectively arranged, so that the current value detected by the current detection unit 50 can be directly transmitted to the processor 30, the reduction of the transmission level is facilitated, the transmission distance is shortened, the transmission efficiency is improved, the real-time performance of temperature monitoring is facilitated to be improved, and the overheating of the wire of the charging wire 2000 can be better avoided.
In other embodiments, referring to fig. 9 in combination with fig. 11, the current detecting unit 50 may be integrated in the control circuit 40. In still other embodiments, referring to fig. 10, the current detecting unit 50 may include a first current detecting unit 51 and a second current detecting unit 52. The first current detection unit 51 may be integrated in the first control circuit 41. The second current detection unit 52 may be integrated in the second control circuit 42. The current detection unit 50 is integrated in the control circuit 40, which is beneficial to simplifying the circuit structure and improving the stability of the circuit during operation.
Referring to fig. 6, in some embodiments of the charge control method, obtaining the current temperature of the charging line 2000 according to the current impedance, the initial temperature, and a preset mapping relationship between the temperature and the resistivity of the charging line 2000 (06) includes:
061: acquiring initial resistivity according to the initial temperature and the mapping relation;
062: obtaining the current resistivity according to the current impedance, the initial impedance and the initial resistivity; and
063: and acquiring the current temperature according to the current resistivity and the mapping relation.
In the electronic device 1000 of some embodiments, the processor 30 is further configured to perform the steps of 061, 062, and 063.
That is, the processor 30 is further configured to: acquiring initial resistivity according to the initial temperature and the mapping relation; obtaining the current resistivity according to the current impedance, the initial impedance and the initial resistivity; and acquiring the current temperature according to the current resistivity and the mapping relation.
Specifically, when the conductive material of the charging wire 2000 is copper, the temperature and resistivity of the charging wire 2000 may be mapped as shown in fig. 7. The conducting material of charging wire 2000 can also be other metals or alloy materials, and the mapping relation of the temperature and the resistivity of charging wire 2000 will be different according to the different properties of conducting material this moment, and this application does not do the restriction to this, also enumerate one by one. The temperature to resistivity mapping may be a temperature-resistivity graph as shown in fig. 7. The charging control method and the electronic device 1000 according to some embodiments of the present application may obtain an initial resistivity corresponding to an initial temperature according to a mapping relationship between the temperature and the resistivity. For example, if the initial temperature T0 obtained by the temperature sensor 10 when the charging line 2000 is connected to the electronic device 1000 is 25 ℃, the initial resistivity ρ 0 of 0.0175ohm · mm can be obtained from the initial temperature T0 being 25 ℃ and the temperature-resistivity mapping shown in fig. 72And/m. Next, the processor 30 may obtain the current resistivity ρ i according to the current impedance Ri, the initial impedance R0, and the initial resistivity by using the formula R0/Ri ═ ρ 0/ρ i. The processor 30 may then obtain the current temperature Ti from the current resistivity ρ i and the mapping shown in fig. 7. Assuming that the calculated current resistivity ρ i is 0.0206ohm · mm2M, then according to the current resistivity ρ i 0.0206ohm · mm2The current temperature Ti is 55 ℃ obtained by the mapping shown in the/m and FIG. 7.
After acquiring the current temperature Ti, the processor 30 may control the current charging power of the electronic device 1000 according to the current temperature Ti. For example, processor 30 may adjust the current charging power of electronic device 1000 up, down, or maintain it based on the current temperature.
The electronic device 1000 may include a control circuit 40. The control circuit 40 may be configured to control the input current of the charging line 2000 to be an initial current, and the initial current is within a preset range. The initial current may be the current at the beginning of charging. The initial current may be a small current, for example, 200mA, 300mA, or 500mA, etc. For example, the control circuit 40 of the electronic device 1000 may control the input current of the charging line 2000 to be 300 mA. Since the control circuit 40 can control the initial current to be a current with a smaller current value, it is beneficial to prevent a larger current from directly flowing into the battery 70 at the beginning of charging, so as to achieve the function of protecting the battery 70. Meanwhile, in the charging control method and the electronic device 1000 of some embodiments, the temperature sensor 10 obtains the temperature of the output end 2200 of the charging line 2000 before the charging is started as the initial temperature, so that the control circuit 40 controls the initial current to be the current with a smaller current value, and can avoid the heating caused by the larger current flowing through the charging line 2000 when the charging is started, thereby avoiding the change of the corresponding initial impedance relative to the impedance before the charging due to the heating of the line, so that the initial temperature and the initial impedance can be equivalently seen as the temperature of the charging line 2000 and the corresponding impedance at the same time, and being beneficial to improving the accuracy of the subsequent calculation of the current temperature.
In some embodiments, referring to fig. 5 or fig. 9, the control circuit 40 of the charging control method and the electronic device 1000 according to the embodiment of the present disclosure may include a control circuit 40, and the control circuit 40 may be connected in series with the battery 70 on the same circuit connected to the output end 2200 of the charging line 2000. The control circuit 40 may be configured to control the input current of the charging line 2000 to be an initial current, adjust the power at a previous time up to obtain a current charging power of the electronic device 1000, and charge the electronic device 1000 with the current charging power of the electronic device 1000 and adjust the current charging power of the electronic device 1000 down. The processor 30 may control the current charging power of the electronic device 1000 according to the current temperature Ti through the control circuit 40, which is beneficial to simultaneously controlling the input current of the charging line 2000 as the initial current with a simple circuit, and the initial current is within a preset range and controls the current charging power of the electronic device 1000 according to the current temperature Ti, thereby facilitating circuit simplification, structural space saving, and product miniaturization.
In other embodiments, referring to fig. 8 or fig. 10, the control circuit 40 of the charging control method and the electronic device 1000 may include a first control circuit 41 and a second control circuit 42. The processor 30 controlling the input current of the charging line 2000 to the initial current may include: the processor 30 controls the input current of the charging line 2000 to be the initial current through the first control circuit 41. The processor 30 up-regulates the power of the previous time to obtain the current charging power of the electronic device 1000, and may include: the processor 30 adjusts the power of the previous time to obtain the current charging power of the electronic device 1000 through the second control circuit 42. Furthermore, the processor 30 may also adjust the current charging power of the electronic device 1000 downward through the second control circuit 42.
That is, the control circuit 40 of the electronic device 1000 and the charging control method according to the embodiment of the present application may include the first control circuit 41 and the second control circuit 42. The processor 30 may be configured to control the first control circuit 41 such that the input current of the charging line 2000 is the initial current. The first control circuit 41 may control the input current of the charging line 2000 to be the initial current. The processor 30 may be configured to control the second control circuit 42 to adjust the power at the previous time up to obtain the current charging power of the electronic device 1000, or adjust the current charging power of the electronic device 1000 down. Wherein the first control circuit 41 may be located on the first loop and the second control circuit 42 may be located on the second loop. The first and second loops may be two different loops connected in parallel on the output terminal 2200 of the charging wire 2000. Wherein the battery 70 of the electronic device 1000 may be located on the second loop, the second control circuit 42 may be connected in series with the battery 70 to control the magnitude of the current flowing through the battery 70, thereby being capable of controlling the charging power of the electronic device 1000. Because the first loop and the second loop can be two different loops connected in parallel to the output end 2200 of the charging wire 2000, when the charging wire 2000 is just connected to the electronic device 1000, the second loop where the battery 70 is located can be disconnected and does not work, the first loop is connected to work and controls the input current of the charging wire 2000 to be the initial current through the first control circuit 41, thereby avoiding the higher voltage to be connected to the battery 70 or the higher current to flow into the battery 70 to achieve the function of protecting the battery 70 when the charging wire 2000 is just connected to the electronic device 1000, which is beneficial to improving the service life of the battery 70.
The charging power of the electronic device 1000 may have a plurality of gears, each gear corresponding to the charging power of the electronic device 1000. Adjusting the current charging power of the electronic device 1000 may include: one gear is shifted up to increase the current charging power of the electronic device 1000. For example, the charging power of the electronic device 1000 may include 0W, 2W, 4W, 6W, 8W, 10W, 12W, 14W, 16W, 18W, 20W. For another example, the gear of the charging current corresponding to the gear of the charging power may be 0mA, 200mA, 400mA, 600mA, 800mA, 1000mA, etc., and the processor 30 may control the gear of the charging power by controlling the gear of the charging current. The charging power of the electronic device 1000 may be provided with a plurality of gears, which is beneficial to more finely controlling the charging power of the electronic device 1000, and the charging power may be adjusted up gear by gear at a stage just after the charging is started, which is beneficial to making the charging process safer.
According to the charging control method, the electronic device 1000, and the computer-readable storage medium of some embodiments of the present application, the current temperature of the charging line 2000 is obtained through the current impedance, the initial temperature, and the preset mapping relationship between the temperature and the resistivity of the charging line 2000, and the charging power of the electronic device 1000 is controlled according to the current temperature, if the current temperature is too high, the current charging power may be adjusted downward, and when the charging power decreases, the current generated in the charging process decreases, so that the heating degree of the charging line 2000 can be reduced. From this, can realize adjusting and controlling charging power through the temperature of the circuit of monitoring charging wire 2000 to can adjust charging power down in advance before detecting that charging wire 2000 reachs overheated state, with effectively preventing charging wire 2000's unusual generating heat, prevent that charging wire 2000 from burning because of overheated emergence, thereby can avoid the emergence of incident.
Referring to fig. 11 and 12, in a charging control method according to some embodiments, controlling a charging power (07) of the electronic device 1000 according to a current temperature may include:
071: and when the current temperature is greater than the preset temperature threshold value, adjusting the current charging power of the electronic device 1000 downwards.
In the electronic device 1000 of some embodiments, the processor 30 is further configured to perform the method in 071,
that is, the processor 30 is further configured to adjust the current charging power of the electronic device 1000 downward when the current temperature is greater than the preset temperature threshold.
According to the charging control method and the electronic device 1000 of some embodiments of the application, when the current temperature is greater than the preset temperature threshold, the current charging power of the electronic device 1000 is adjusted downward, so that the current generated in the charging process is reduced, and the heating degree of the charging line 2000 can be reduced. From this, can adjust charging power down in advance before detecting that charging wire 2000 reaches overheated state to effectively prevent charging wire 2000's abnormal heat generation, prevent that charging wire 2000 from taking place the burning because of overheated, thereby can avoid the emergence of incident.
Referring to fig. 11 and 13, in a charging control method according to some embodiments, controlling a charging power (07) of the electronic device 1000 according to a current temperature may further include:
072: when the charging of the electronic device 1000 is not finished, returning to the step of acquiring the current temperature of the charging line 2000; and
073: when the charging of the electronic device 1000 is completed, the charging is stopped.
In some embodiments of the electronic device 1000, the processor 30 may also be used to perform the methods in 072 and 073.
That is, the processor 30 may also be configured to: when the charging of the electronic device 1000 is not finished, returning to the step of acquiring the current temperature of the charging line 2000; and stopping charging when the charging of the electronic device 1000 is finished.
According to the charging control method and the electronic device 1000 of some embodiments of the application, when the charging of the electronic device 1000 is not completed, the step of obtaining the current temperature of the charging line 2000 is returned to be executed, so that in the whole charging process of the electronic device, the current temperature of the charging line 2000 can be continuously obtained to periodically monitor the current temperature of the charging line 2000 and control the charging power of the electronic device 1000 according to the current temperature, thereby effectively preventing abnormal heating of the charging line 2000 in the whole charging process, preventing the charging line 2000 from burning due to overheating, and avoiding safety accidents.
Referring to fig. 11 and 14, in a charging control method according to some embodiments, controlling a charging power (07) of an electronic device 1000 according to a current temperature includes:
074: when the current temperature is less than the preset temperature threshold and the current charging power of the electronic device 1000 reaches the maximum charging power of the electronic device 1000, returning to execute the step of obtaining the current temperature of the charging line 2000; and
075: and when the current temperature is lower than the preset temperature threshold and the current charging power of the electronic device 1000 does not reach the maximum charging power of the electronic device 1000, returning to execute the step of up-regulating the power at the previous moment.
In the electronic device 1000 of some embodiments, the processor 30 may also be used to perform the methods in 074 and 075.
That is to say, the processor 30 may be further configured to return to the step of acquiring the current temperature of the charging line 2000 when the current temperature is less than the preset temperature threshold and the current charging power of the electronic device 1000 reaches the maximum charging power of the electronic device 1000; and returning to the step of performing the power up-regulation on the power at the previous moment when the current temperature is less than the preset temperature threshold and the current charging power of the electronic device 1000 does not reach the maximum charging power of the electronic device 1000.
According to the charging control method and the electronic device 1000 of some embodiments of the application, when the current temperature is less than the preset temperature threshold and the current charging power of the electronic device 1000 reaches the maximum charging power of the electronic device 1000, the step of obtaining the current temperature of the charging line 2000 is returned to, which is beneficial to continuously obtaining the current temperature of the charging line 2000 in the whole charging process of the electronic device so as to periodically monitor the current temperature of the charging line 2000. Moreover, when the current temperature is lower than the preset temperature threshold and the current charging power of the electronic device 1000 does not reach the maximum charging power of the electronic device 1000, the step of performing up-regulation on the power at the previous moment to obtain the current charging power of the electronic device 1000 is returned, and the electronic device 1000 is charged by using the current charging power of the electronic device 1000, which is beneficial to the charging control method and the electronic device 1000 according to some embodiments of the present application to perform up-regulation on the current charging power when the current temperature of the charging line 2000 is not too high and the charging power does not reach the maximum charging power of the electronic device 1000, so that the electronic device 1000 can be charged with the maximum charging efficiency under the condition that the charging line 2000 is not overheated, which is beneficial to improving the charging efficiency, shortening the charging time, and optimizing user experience.
In some embodiments, when the current temperature is equal to a preset temperature threshold, the charging control method and the electronic device 1000 according to the embodiments of the present application may adjust the current charging power of the electronic device 1000 downward, and when the charging of the electronic device 1000 is not finished, return to the step of obtaining the current temperature of the charging line 2000; when the charging of the electronic device 1000 is completed, the charging is stopped.
In another embodiment, when the current temperature is equal to the preset temperature threshold and the current charging power of the electronic device 1000 reaches the maximum charging power of the electronic device 1000, the charging control method and the electronic device 1000 according to the embodiments of the present application may return to perform the step of acquiring the current temperature of the charging line 2000. When the current temperature is equal to the preset temperature threshold and the current charging power of the electronic device 1000 does not reach the maximum charging power of the electronic device 1000, the charging control method and the electronic device 1000 according to the embodiments of the present application may return to perform the step of adjusting the power at the previous time.
On the basis of the charging flow shown in fig. 4, in some embodiments, the maximum charging power allowed by the electronic device 1000 may be changed according to a change in the current temperature of the charging line 2000, which may be beneficial to setting different maximum charging powers at different temperatures, and the maximum charging power allowed by the electronic device 1000 may be reduced when the current temperature of the charging line 2000 is higher, so as to more effectively prevent abnormal heating of the charging line 2000, so that the temperature of the charging line 2000 may be reduced, thereby avoiding being in a high-temperature state for a long time, preventing the charging line 2000 from burning due to overheating, thereby avoiding occurrence of a safety accident, and increasing the life of the wire. Meanwhile, the maximum charging power allowed by the electronic device 1000 can be improved when the current temperature of the charging line 2000 is low, so that the electronic device 1000 can be charged with the maximum charging efficiency under the condition that the temperature state of the charging line 2000 is good, the charging efficiency is improved, the charging time is shortened, and the user experience is optimized.
Referring to fig. 15, the present application further provides a computer-readable storage medium 4000. The computer-readable storage medium 4000 has a computer program stored thereon. The computer program realizes the charging control method of any one of the above embodiments when executed by the processor 30.
In summary, according to the charging control method, the electronic device 1000, and the computer-readable storage medium of the embodiments of the present application, the current temperature of the charging line 2000 is obtained through the current impedance, the initial temperature, and the preset mapping relationship between the temperature and the resistivity of the charging line 2000, and the charging power of the electronic device 1000 is controlled according to the current temperature, so that the charging power can be adjusted and controlled by monitoring the temperature of the line of the charging line 2000, thereby effectively preventing abnormal heating of the charging line 2000, preventing the charging line 2000 from burning due to overheating, avoiding safety accidents, and preventing accidents such as scalding and burning due to overheating of a cable.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
Although embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present application, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (11)
1. A charge control method, comprising:
when a charging wire is connected with electronic equipment, acquiring the initial temperature of the output end of the charging wire;
controlling the input current of the charging wire to be initial current, wherein the initial current is within a preset range;
acquiring initial impedance of the charging wire according to the initial current and a voltage difference between an initial input voltage of an input end of the charging wire and an initial output voltage of an output end of the charging wire;
the power of the previous moment is adjusted up to obtain the current charging power of the electronic equipment, and the electronic equipment is charged by the current charging power of the electronic equipment;
acquiring the current impedance of the charging wire according to the voltage difference between the current input voltage of the input end of the charging wire and the current output voltage of the output end of the charging wire and the current of the charging wire;
acquiring the current temperature of the charging wire according to the current impedance, the initial temperature and a preset mapping relation between the temperature and the resistivity of the charging wire; and
and controlling the charging power of the electronic equipment according to the current temperature.
2. The charging control method according to claim 1, wherein the obtaining of the current temperature of the charging line according to the current impedance, the initial temperature, and a preset mapping relationship between the temperature and the resistivity of the charging line comprises:
acquiring initial resistivity according to the initial temperature and the mapping relation;
obtaining a current resistivity according to the current impedance, the initial impedance and the initial resistivity; and
and acquiring the current temperature according to the current resistivity and the mapping relation.
3. The charge control method according to claim 1, wherein said controlling the charge power of the electronic device according to the current temperature comprises
And when the current temperature is greater than a preset temperature threshold value, adjusting the current charging power of the electronic equipment downwards.
4. The charge control method according to claim 3, wherein the controlling of the charge power of the electronic device according to the current temperature further comprises:
when the charging of the electronic equipment is not finished, returning to execute the step of acquiring the current temperature of the charging wire; and
and stopping charging when the electronic equipment is charged.
5. The charge control method according to claim 1, wherein the controlling of the charge power of the electronic device according to the current temperature comprises:
when the current temperature is smaller than a preset temperature threshold value and the current charging power of the electronic equipment reaches the maximum charging power of the electronic equipment, returning to execute the step of obtaining the current temperature of the charging wire; and
and when the current temperature is smaller than a preset temperature threshold value and the current charging power of the electronic equipment does not reach the maximum charging power of the electronic equipment, returning to execute the step of up-regulating the power at the previous moment.
6. An electronic device, comprising:
the temperature sensor is used for acquiring the initial temperature of the output end of the charging wire when the charging wire is connected with the electronic equipment;
a processor and control circuitry, the processor to:
controlling the control circuit to enable the input current of the charging wire to be an initial current, wherein the initial current is within a preset range;
acquiring an initial impedance of the charging wire according to a voltage difference between an initial input voltage of an input end of the charging wire and an initial output voltage of an output end of the charging wire and the initial current, wherein the magnitude of the initial current is controlled by the processor;
adjusting the current charging power of the electronic equipment to enable the current charging power to be larger than the initial charging power of the electronic equipment when the electronic equipment is charged by adopting the initial current;
acquiring the current impedance of the charging wire according to the voltage difference between the current input voltage of the input end of the charging wire and the current output voltage of the output end of the charging wire and the current of the charging wire;
acquiring the current temperature of the charging wire according to the current impedance, the initial temperature and a preset mapping relation between the temperature and the resistivity of the charging wire; and
and charging the electronic equipment according to the current temperature.
7. The electronic device of claim 6, wherein the processor is further configured to:
acquiring initial resistivity according to the initial temperature and the mapping relation;
obtaining a current resistivity according to the current impedance, the initial impedance and the initial resistivity; and
and acquiring the current temperature according to the current resistivity and the mapping relation.
8. The electronic device of claim 6, wherein the processor is further configured to:
and when the current temperature is greater than a preset temperature threshold value, adjusting the current charging power of the electronic equipment downwards.
9. The electronic device of claim 8, wherein the processor is further configured to:
when the charging of the electronic equipment is not finished, returning to execute the step of acquiring the current temperature of the charging wire; and
and stopping charging when the electronic equipment is charged.
10. The electronic device of claim 6, wherein the processor is further configured to:
when the current temperature is smaller than a preset temperature threshold value and the current charging power of the electronic equipment reaches the maximum charging power of the electronic equipment, returning to execute the step of obtaining the current temperature of the charging wire; and
and when the current temperature is smaller than a preset temperature threshold value and the current charging power of the electronic equipment does not reach the maximum charging power of the electronic equipment, returning to execute the step of up-regulating the power at the previous moment.
11. A non-transitory computer-readable storage medium containing a computer program, wherein the computer program, when executed by a processor, causes the processor to execute the charge control method according to any one of claims 1 to 5.
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Application publication date: 20200925 |