CN112994167A - Charging device, electronic apparatus, charging control method, and charging control device - Google Patents
Charging device, electronic apparatus, charging control method, and charging control device Download PDFInfo
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- CN112994167A CN112994167A CN202110293988.5A CN202110293988A CN112994167A CN 112994167 A CN112994167 A CN 112994167A CN 202110293988 A CN202110293988 A CN 202110293988A CN 112994167 A CN112994167 A CN 112994167A
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
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Abstract
The application discloses a charging device, electronic equipment, a charging control method and a charging control device, and belongs to the technical field of charging. The charging device includes: a charging circuit; power conditioning circuit is connected with charging circuit, and power conditioning circuit includes: the positive phase input end of the comparison circuit is connected with the input end of the charging circuit, the negative phase input end of the comparison circuit is grounded, and the voltage of the negative phase input end is set to be a preset voltage threshold value; the first end of the sub-regulating circuit is connected with the output end of the comparison circuit, the second end of the sub-regulating circuit is grounded, and the third end of the sub-regulating circuit is connected with the charging circuit; the sub-regulation circuit is used for increasing the output power of the charging circuit under the condition that the input voltage of the charging circuit is greater than the preset voltage threshold value, and reducing the output power of the charging circuit under the condition that the input voltage of the charging circuit is less than or equal to the preset voltage threshold value.
Description
Technical Field
The application belongs to the technical field of charging, and particularly relates to a charging device, electronic equipment, a charging control method and a charging control device.
Background
At present, in order to ensure stable operation of a power supply device under low voltage, a filtering module is added in a charger, so that the volume of the charger is large. In the related art, in order to reduce the size of the charger and reduce the capacitance value of the capacitor of the filter module, the problem caused by this method is that the voltage of the capacitor of the filter module drops faster when the power is output, and if the output voltage of the charger drops below the normal operating voltage of the charging module of the electronic device, the charging of the electronic device is abnormal.
Disclosure of Invention
An object of the embodiments of the present application is to provide a charging device, an electronic device, a charging control method, and a charging control device, which can solve the problem in the related art that the output voltage of a charger drops below the normal operating voltage of a charging module of the electronic device, which causes abnormal charging of the electronic device.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a charging device, including:
a charging circuit;
power conditioning circuit is connected with charging circuit, and power conditioning circuit includes: the positive phase input end of the comparison circuit is connected with the input end of the charging circuit, the negative phase input end of the comparison circuit is grounded, and the voltage of the negative phase input end is set as a preset voltage threshold value; the first end of the sub-regulating circuit is connected with the output end of the comparison circuit, the second end of the sub-regulating circuit is grounded, and the third end of the sub-regulating circuit is connected with the charging circuit; the sub-regulation circuit is used for increasing the output power of the charging circuit under the condition that the input voltage of the charging circuit is greater than the preset voltage threshold value, and reducing the output power of the charging circuit under the condition that the input voltage of the charging circuit is less than or equal to the preset voltage threshold value.
In a second aspect, an embodiment of the present application provides an electronic device, including:
the charging interface is used for being connected with an external charger;
a battery; and
the charging device according to the first aspect is connected between the charging interface and the battery, and is configured to transmit electric energy of an external charger to the battery.
In a third aspect, an embodiment of the present application provides a charging control method, which is applied to the charging device according to the first aspect, and the charging control method includes:
comparing the input voltage of the charging circuit with a preset voltage threshold;
under the condition that the input voltage of the charging circuit is greater than a preset voltage threshold, increasing the output power of the charging circuit;
and reducing the output power of the charging circuit under the condition that the input voltage of the charging circuit is less than or equal to a preset voltage threshold value.
In a fourth aspect, an embodiment of the present application provides a charging control device, which is applied to the charging device according to the first aspect, and the charging control device includes:
the comparison unit is used for comparing the input voltage of the charging circuit with a preset voltage threshold;
the adjusting unit is used for increasing the output power of the charging circuit under the condition that the input voltage of the charging circuit is larger than a preset voltage threshold value, and reducing the output power of the charging circuit under the condition that the input voltage of the charging circuit is smaller than or equal to the preset voltage threshold value.
In the embodiment of the present application, the input voltage of the charging circuit is compared with the preset voltage threshold by using the comparison circuit, and the output power of the charging circuit is increased by using the sub-regulation circuit when the input voltage of the charging circuit is greater than the preset voltage threshold, and the output power of the charging circuit is decreased when the input voltage of the charging circuit is less than or equal to the preset voltage threshold, that is, the purpose of controlling the output power of the charging circuit is achieved. On one hand, the maintenance of the charging device on low-power charging is ensured; on the other hand, the voltage value input by the charging circuit is ensured not to be reduced below the preset voltage threshold, so that the primary voltage of the charger is prevented from being reduced to the lowest working voltage of the power conversion module, and the power can be quickly recovered after the voltage is recovered in the next period.
Drawings
Fig. 1 is a schematic view of a structure of a charger in the related art;
FIG. 2 is a schematic voltage waveform of an AC power grid of the related art;
FIG. 3 is a schematic voltage waveform of an AC power grid after passing through an EMI filtering module and a rectifying module inside the device in the related art;
FIG. 4 is a schematic voltage waveform of an AC power grid filtered by an EMI filtering module, a rectifying module and a capacitor inside the device in the related art;
fig. 5 is one of waveforms of respective voltages in the related art;
fig. 6 is a second schematic diagram of waveforms of respective voltages in the related art.
Wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is:
102 ' alternating current input port, 104 ' EMI filtering module, 106 ' input rectifying module, 108 ' power logic control module, 110 ' output rectifying module, 112 ' charger output interface, 114 ' protocol control module, 116 ' feedback module, 118 ' power conversion module.
Fig. 7 is a schematic structural diagram of a charging device according to an embodiment of the present application;
fig. 8 is a schematic diagram of a connection structure of an external charger and an electronic device according to an embodiment of the present application;
FIG. 9 is a schematic flowchart of a charging control method according to an embodiment of the present application;
FIG. 10 is a schematic diagram of waveforms of various voltages used in an embodiment of the present application;
fig. 11 is a schematic block diagram of a charge control device according to an embodiment of the present application.
Wherein, the correspondence between the reference numbers and the part names in fig. 7 and 8 is:
100 external charger, 102AC input port, 104EMI filter module, 106 input rectifier module, 108 power logic control module, 110 output rectifier module, 112 charger output interface, 114 protocol control module, 116 feedback module, 118 power conversion module, 702 charging circuit, 704 power regulation circuit, 7042 sub-regulation circuit, 7422 resistance circuit, 74224 second resistance, 74222 first resistance, 7424 switch circuit, 7044 comparison circuit, 800 electronic equipment, 802 charging interface and 804 battery.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the prior art, a buck-architecture charging integrated circuit is generally used to realize DC (Direct Current to Direct Current)/DC voltage conversion to charge a battery of an electronic device. The fast charging scheme mainly comprises the following two architectures: the first is a direct charging scheme, which is that a charger adjusts output voltage to be equal to battery voltage plus path impedance residual charging current from the charger to the battery, so that the output voltage of the charger directly charges the battery; the second scheme is a charge pump half-voltage charging scheme, the output voltage of the charger is 2 times of the voltage of the battery, and half of the regulated output voltage of the charger is reduced to charge the battery through a charge pump half-voltage charging module. In both charging schemes, there are situations where low voltages are generated.
In the prior art, a charger is shown in fig. 1, and includes: an ac input port 102 ', an EMI (electromagnetic Interference) filtering module 104 ', an input rectifying module 106 ', a power logic control module 108 ', an output rectifying module 110 ', a charger output interface 112 ', a protocol control module 114 ', a feedback module 116 ', and a power conversion module 118 '.
Since a power supply device such as a charger needs to be connected to an ac power grid, as shown in fig. 2, the voltage of the ac power grid is a sine wave voltage, and it can be seen from fig. 2 that the voltage of the ac power grid is approximately equal to 0V. After passing through the EMI filter module 104 'and the input rectifier module 106' inside the charger, the power grid becomes a periodic voltage as shown in fig. 3, where the periodic voltage is a steamed bread wave, the lowest point of the voltage will reach 0V, and there is also a periodic low voltage.
To ensure stable operation of the power supply under the low voltage condition, the low voltage portion of the waveform of fig. 3 is increased by adding a capacitive filtering module (e.g., an input energy storage filtering capacitor C1) as shown in fig. 1. Meanwhile, after the grid voltage passes through the EMI filter module 104 ' and the input rectifier module 106 ', the power is transmitted to the C1, and after being filtered by the C1, the voltage of C1 shown in fig. 4 is obtained, and then is transmitted to the power conversion module 118 ', and the required voltage is output after conversion.
Therefore, in order to ensure stable operation in the power supply, it is necessary to maintain the voltage ripple within a small range. However, in the above prior art, the EMI filter module 104' needs a large-capacity capacitor to smooth voltage ripples, and the peak value of the primary voltage is large, which results in a large capacity and a large volume of the high-voltage capacitor, and finally results in a large volume of the charger, and in order to reduce the volume of the charger, the capacitance value of the primary C1 is reduced, which results in a rapid voltage drop of the C1 during high-power output. As shown in fig. 5, if the voltage of C1 drops to the lowest operating voltage of the power conversion module 118 ' of the charger, it is unable to provide energy for the secondary output rectification module 110 ', and thus the charger output rectification module 110 ' cannot absorb energy from the primary side, if the output power is maintained, the output energy storage filter capacitor C2 needs to maintain power output, the larger the power output, the faster the voltage drop of C2, the faster the output voltage drop of the charger, and the output voltage returns to normal only after the primary side periodic voltage of the next time is needed. If the output voltage of the charger drops below the normal operating voltage of the charging module of the electronic device before the next primary side periodic voltage is reached, charging anomalies can result.
In addition, as shown in fig. 6, the charging abnormality is mainly that the input voltage of the charging module (i.e., the output voltage of the charger) is lower than a logic abnormal voltage threshold, where the lower than the logic abnormal voltage threshold means that the charging module has exited from the charging state, and the logic module of the charging module needs to be reinitialized or enabled next time when the input voltage returns to normal, the power conversion module 118 'can normally operate, and the time required for initializing and enabling the charging integrated circuit is as the ac mains supply is 50Hz or 60Hz, the time from T1 to T2 is 20ms according to the 50Hz calculation cycle time, and the time from T1 to T2 is less than 20ms, if the initialization time of the power logic control module 108' exceeds T1 to T2, the output voltage of the charger before the initialization is completed will drop below the logic abnormal voltage threshold.
Therefore, the present application provides a charging device, an electronic device, a charging control method, and a charging control device, which are used to solve the above technical problems. A charging device, an electronic device, a charging control method, and a charging control device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
An embodiment of the first aspect of the present application provides a charging device, as shown in fig. 7, including:
a charging circuit 702;
a power conditioning circuit 704 connected to the charging circuit 702, the power conditioning circuit 704 including:
the positive phase input end of the comparison circuit 7044 is connected with the input end of the charging circuit 702, the negative phase input end of the comparison circuit 7044 is grounded, and the voltage of the negative phase input end is set to be a preset voltage threshold; and the combination of (a) and (b),
a first end of the sub-regulating circuit 7042 is connected to the output end of the comparing circuit 7044, a second end of the sub-regulating circuit 7042 is grounded, and a third end of the sub-regulating circuit 7042 is connected to the charging circuit 702;
the comparison circuit 7044 is configured to compare the input voltage of the charging circuit 702 with a preset voltage threshold, and the sub-regulation circuit 7042 is configured to increase the output power of the charging circuit 702 if the input voltage of the charging circuit 702 is greater than the preset voltage threshold, and decrease the output power of the charging circuit 702 if the input voltage of the charging circuit 702 is less than or equal to the preset voltage threshold.
In this embodiment, the charging device is provided with a charging circuit 702 and a power conditioning circuit 704, wherein the power conditioning circuit 704 is connected with the charging circuit 702. The power regulating circuit 704 is provided with a comparing circuit 7044 and a sub-regulating circuit 7042, wherein a non-inverting input terminal of the comparing circuit 7044 is connected to an input terminal of the charging circuit 702, an inverting input terminal of the comparing circuit 7044 is grounded, a first terminal of the sub-regulating circuit 7042 is connected to an output terminal of the comparing circuit 7044, a second terminal of the sub-regulating circuit 7042 is grounded, and a third terminal of the sub-regulating circuit 7042 is connected to the charging circuit 702. The comparison circuit 7044 compares the input voltage value of the charging circuit 702 with a stored preset voltage threshold, and performs an increasing adjustment on the output power of the charging circuit 702 by using the sub-regulation circuit 7042 if the input voltage of the charging circuit 702 is greater than the preset voltage threshold, and performs a decreasing adjustment on the output power of the charging circuit 702 by using the sub-regulation circuit 7042 if the input voltage of the charging circuit 702 is less than or equal to the preset voltage threshold. It should be noted that the preset voltage threshold is a voltage threshold for reducing the power of the charging circuit 702, and the preset voltage threshold is set to be greater than or equal to the lowest operating voltage of the charging circuit (i.e., the above-mentioned logic abnormal voltage threshold).
In the embodiment of the present application, the power adjusting circuit 704 reasonably controls the output power of the charging circuit 702 according to the magnitude relationship between the input voltage of the charging circuit 702 and the preset voltage threshold, on one hand, the charging device is guaranteed to maintain the low-power charging; on the other hand, the voltage value input by the charging circuit 702 is ensured not to be reduced below the preset voltage threshold, so that the primary voltage of the charger is prevented from being reduced to the lowest working voltage of the power conversion module, and the power can be quickly recovered after the voltage is recovered in the next period.
In one embodiment of the present application, in a case that the input voltage of the charging circuit 702 is greater than the preset voltage threshold, the output terminal of the comparing circuit 7044 is at a high level, and the resistance value of the sub-regulating circuit 7042 is decreased to increase the output power of the charging circuit 702; in the case where the input voltage of the charging circuit 702 is less than or equal to the preset voltage threshold, the output terminal of the comparing circuit 7044 is at a low level, and the resistance value of the sub-regulating circuit 7042 is increased to reduce the output power of the charging circuit 702.
In this embodiment, the voltage at the inverting input terminal of the comparing circuit 7044 is set to a preset voltage threshold, the input voltage of the charging circuit 702 is compared with the preset voltage threshold by the comparing circuit 7044, and if the non-inverting input terminal of the comparing circuit 7044 is greater than the inverting input terminal of the comparing circuit 7044, that is, the input voltage of the charging circuit 702 is greater than the preset voltage threshold, it is determined that the output terminal of the comparing circuit 7044 is in a high state; if the non-inverting input terminal of the comparing circuit 7044 is less than or equal to the inverting input terminal of the comparing circuit 7044, i.e., the input voltage received by the charging circuit 702 is less than or equal to the preset voltage threshold, the output terminal of the comparing circuit 7044 is in a low state. When the output end of the comparison circuit 7044 is in a high state, the resistance value of the sub-regulation circuit 7042 may be controlled to be decreased to increase the output power of the charging circuit 702; when the output terminal of the comparison circuit 7044 is in a low state, the resistance value of the sub-regulation circuit 7042 may be controlled to be increased to decrease the output power of the charging circuit 702.
In this embodiment, the level state of the output terminal of the comparing circuit 7044 is changed according to the input voltage of the charging circuit 702 and the preset voltage threshold, and the resistance value of the sub-adjusting circuit 7042 is adjusted according to the level state of the output terminal of the comparing circuit 7044, so as to control the output power of the charging circuit 702. On one hand, the output power of the charging circuit 702 is reduced to reduce the load of the charger, so that the primary voltage of the charger can be ensured not to be lower than the lowest working voltage of the power conversion module, and the charger can work normally. On the other hand, by increasing the output power of the charging circuit 702, the power is normal, and the purpose of quickly recovering the power after the voltage is recovered is achieved.
In some embodiments, the comparison circuit 7044 is a comparator having a negative phase terminal that sets a threshold voltage Vref, and a voltage threshold for power down of a charging circuit of the electronic device based on Vref, and a positive phase terminal that is coupled to the input voltage Vbus of the electronic device.
In one embodiment of the present application, the sub-regulation circuit 7042 includes:
a switch circuit 7424, a first terminal of the switch circuit 7424 is connected to the output terminal of the comparison circuit 7044, and a second terminal of the switch circuit 7424 is grounded;
a resistor circuit 7422, a first terminal of the resistor circuit 7422 is connected to the third terminal of the switch circuit 7424, a second terminal of the resistor circuit 7422 is grounded, and a third terminal of the resistor circuit 7422 is connected to the charging circuit 702;
when the output terminal of the comparator 7044 is at a high level, the switch 7424 is turned on to decrease the resistance of the resistor 7422, thereby increasing the output power of the charging circuit 702; when the output terminal of the comparator 7044 is at a low level, the switch 7424 is turned off to increase the resistance of the resistor 7422, thereby reducing the output power of the charging circuit 702.
In this embodiment, the sub-regulator circuit 7042 is provided with a switch circuit 7424 and a resistor circuit 7422, wherein a first terminal of the switch circuit 7424 is connected to the output terminal of the comparator circuit 7044, a second terminal of the switch circuit 7424 is grounded, a first terminal of the resistor circuit 7422 is connected to the third terminal of the switch circuit 7424, a second terminal of the resistor circuit 7422 is grounded, and a third terminal of the resistor circuit 7422 is connected to the charging circuit 702. In the embodiment of the present application, when the output terminal of the comparing circuit 7044 is at a high level, the switching circuit 7424 of the sub-regulator circuit 7042 is turned on, so that the resistance value of the resistor circuit 7422 is decreased, and the output power of the charging circuit 702 is increased; when the output terminal of the comparator 7044 is at a low level, the switch 7424 is turned off to increase the resistance of the resistor 7422, thereby reducing the output power of the charging circuit 702. By controlling the state of the switching circuit 7424, the resistance of the resistor circuit 7422 is controlled, and the output power of the charging circuit 702 is controlled, so that the charging device can maintain low-power charging while the volume of the charging device is reduced, and the charger can quickly recover power after the voltage of the next period recovers when the primary voltage of the charger is reduced to the working voltage with the lowest power.
In some embodiments, the switch circuit 7424 is a Metal Oxide Semiconductor (MOS) transistor, wherein a gate of the MOS transistor is connected to the output terminal of the comparison circuit 7044, a source of the MOS transistor is grounded, and a drain of the MOS transistor is connected to the resistor circuit 7422.
In one embodiment of the present application, the resistor circuit 7422 includes:
a first resistor 74222, a first terminal of the first resistor 74222 is connected to the third terminal of the switch circuit 7424, and a second terminal of the first resistor 74222 is connected to the charging circuit 702;
a second resistor 74224, a first terminal of the second resistor 74224 is connected to ground, and a second terminal of the second resistor 74224 is connected to the charging circuit 702.
In this embodiment, the smaller the impedance of the power control pin to ground of the charging circuit 702, the greater its output power, and the larger the impedance of the power control pin to ground, the smaller its output power. When the switch circuit 7424 is turned on, the first resistor 74222 and the second resistor 74224 are connected in parallel to the circuit, and the resistance value of the resistor circuit 7422 decreases; when the switch circuit 7424 is turned off, the first resistor 74222 is turned off, and only the second resistor 74224 remains, so that the resistance of the resistor circuit 7422 relatively increases. In the embodiment of the present application, the control of the resistance value of the resistance circuit 7422 is realized through the first resistor 74222 and the second resistor 74224, and then the control of the output power of the charging circuit 702 is realized, so that the reliability of the control of the resistance value of the resistance circuit 7422 is ensured, and further the rationality of the control of the output power of the charging circuit 702 is ensured, and the charging device can rapidly recover power and maintain charging after the next cycle voltage recovery.
An embodiment of the second aspect of the present application proposes an electronic device 800, as shown in fig. 8, where the electronic device 800 includes:
a charging interface 802 for connecting with an external charger 100;
a battery 804; and
as in the charging device of the first embodiment, the charging device is connected between the charging interface 802 and the battery 804, and is used for transmitting the electric energy of the external charger 100 to the battery 804.
In this embodiment, the electronic apparatus 800 is provided with a charging interface 802, a battery 804, and a charging device. The charging interface 802 is connected to the battery 804 by the charging device in the above embodiments, and the charging device enables the power of the external charger 100 to be transmitted to the battery 804.
As shown in fig. 8, the charging device includes: a charging circuit 702, a comparison circuit 7044, a switching circuit 7424, a first resistor 74222 and a second resistor 74224. The external charger 100 includes: the power converter comprises an AC input port 102, an EMI filtering module 104, an input rectifying module 106, a power logic control module 108, an output rectifying module 110, a charger output interface 112, a protocol control module 114, a feedback module 116, a power conversion module 118, an input energy storage filtering capacitor C1 and an output energy storage filtering capacitor C2.
In the embodiment of the present application, the external charger 100 reduces the volume of the charger by reducing the capacitance value of the input energy storage filter capacitor C1, a hardware logic circuit is added at one end of the electronic device 800, a comparison circuit 7044 is added, the monitoring input voltage is compared with a preset voltage threshold, and the power control pin of the charging circuit 702 is controlled to reduce the charging power value, so that low-power charging can be maintained, meanwhile, the input voltage is prevented from being reduced below a logic abnormal voltage threshold, the primary voltage of the external charger 100 is prevented from being reduced to the lowest working voltage of the power conversion module, the power part can be quickly recovered after the next cycle voltage is recovered, and under the condition that the volume of the external charger 100 is reduced, the charging circuit 702 can normally charge the battery.
In one embodiment of the present application, as shown in fig. 9, during the time period from 0 to T1, the input voltage Vbus of the charging circuit 702 is greater than the voltage threshold Vref for the charging circuit 702 to power down, and the voltage threshold Vref for the charging circuit 702 to power down needs to be greater than the logic abnormal voltage threshold. The output terminal of the comparator 7044 is at a high level, the switch 7424 is turned on, the first resistor 74222 and the second resistor 74224 are connected in parallel to the power control pin of the charging circuit 702, the impedance of the power control pin to ground decreases, and the charging power increases. At time T1, Vbus starts to fall, and when Vbus falls to time Vref, the output of the comparison circuit 7044 changes from high level to low level, the switch circuit 7424 is not turned on, the first resistor 74222 is turned off, the ground impedance of the power control pin is only the second resistor 74224, the ground impedance is increased, the charging power is reduced to reduce the pull-load on the charger end, the voltage of the input energy storage filter capacitor C1 of the charger can be ensured not to be lower than the lowest operating voltage of the power conversion module, and the charger can be ensured to operate normally. At time T2, Vbus rises to return to normal, and when Vbus rises to Vref, the output of the comparison circuit 7044 changes from low to high, the switch circuit 7424 is turned on, the first resistor 74222 and the second resistor 74224 are connected in parallel, the impedance of the power control pin to ground is reduced, and the power of the charging module operates normally. And then periodically cycled according to the charging process described above.
The electronic device 800 may be a mobile electronic device or a non-mobile electronic device. By way of example, the Mobile electronic device may be a Mobile phone, a tablet Computer, a notebook Computer, a palm top Computer, an in-vehicle electronic device, a wearable device, an Ultra-Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-Mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (Personal Computer, PC), a Television (TV), a teller machine, a self-service machine, and the like, and the embodiments of the present application are not limited in particular.
In an embodiment of the third aspect of the present application, a charging control method is provided, where the charging control method is applied to a charging device as in the embodiment of the first aspect, and fig. 10 shows a flowchart of the charging control method according to an embodiment of the present application. The charging control method comprises the following steps:
step 1002: comparing the input voltage of the charging circuit with a preset voltage threshold;
step 1004: under the condition that the input voltage of the charging circuit is greater than a preset voltage threshold, increasing the output power of the charging circuit;
step 1006: and reducing the output power of the charging circuit under the condition that the input voltage of the charging circuit is less than or equal to a preset voltage threshold value.
In this embodiment, the charging device is provided with a charging circuit and a power conditioning circuit, wherein the power conditioning circuit is connected to the charging circuit. The power regulating circuit compares the input voltage value of the charging circuit with a stored preset voltage threshold, if the input voltage of the charging circuit is greater than the preset voltage threshold, the output power of the charging circuit is increased and regulated, and if the input voltage of the charging circuit is less than or equal to the preset voltage threshold, the output power of the charging circuit is decreased and regulated.
In the embodiment of the application, the power regulating circuit reasonably controls the output power of the charging circuit according to the input voltage of the charging circuit, and on one hand, the charging circuit is ensured to maintain the low-power charging; on the other hand, the voltage value input by the charging circuit is ensured not to be reduced below the preset voltage threshold, so that the primary voltage of the charger is prevented from being reduced to the lowest working voltage of the power conversion module, and the power can be quickly recovered after the voltage is recovered in the next period.
In addition, it should be noted that the preset voltage threshold in the present application is a voltage threshold for reducing the power of the charging circuit.
In one embodiment of the present application, reducing the output power of the charging circuit in a case where the input voltage of the charging circuit is less than or equal to a preset voltage threshold includes: and under the condition that the input voltage of the charging circuit is less than or equal to the preset voltage threshold, controlling the resistance value of the sub-regulating circuit of the power regulating circuit to increase so as to reduce the output power of the charging circuit.
In this embodiment, if the input voltage of the charging circuit is less than or equal to the preset voltage threshold, the output terminal of the comparison circuit of the power regulation circuit is determined to be in a low level state, and the output power of the charging circuit is reduced by increasing the resistance value of the sub-regulation circuit of the power regulation circuit. According to the embodiment of the application, the output power of the charging circuit is reduced, so that the load of the charger is reduced, the primary side voltage of the charger can be ensured not to be lower than the lowest working voltage of the power conversion module, and the charger can work normally.
In one embodiment of the present application, increasing the output power of the charging circuit when the input voltage of the charging circuit is greater than a preset voltage threshold includes: and under the condition that the input voltage of the charging circuit is greater than the preset voltage threshold, controlling the resistance value of the sub-regulating circuit of the power regulating circuit to be reduced so as to increase the output power of the charging circuit.
In this embodiment, if the input voltage received by the charging circuit is greater than the preset voltage threshold, the output terminal of the comparison circuit of the power regulation circuit is in a high state, and when the output terminal of the comparison circuit is in the high state, the output power of the charging circuit is increased by reducing the resistance value of the sub-regulation circuit of the power regulation circuit. In the embodiment of the application, the output power of the charging circuit is increased, so that the power is normal, and the purpose of quickly recovering the power after the voltage is recovered is realized.
In one embodiment of the present application, the preset voltage threshold is greater than or equal to a lowest operating voltage of the charging circuit.
In this embodiment, the preset voltage threshold is defined to be greater than or equal to the lowest operating voltage of the charging circuit to avoid that the input voltage to the charging circuit is lower than the preset voltage threshold, thereby avoiding that the charging circuit exits the charging state.
In an embodiment of the fourth aspect of the present application, a charging control device is provided, which is applied to the charging device according to the first aspect, as shown in fig. 11, where the charging control device 1100 includes:
a comparing unit 1102, configured to compare an input voltage of the charging circuit with a preset voltage threshold;
and an adjusting unit 1104 for increasing the output power of the charging circuit if the input voltage of the charging circuit is greater than a preset voltage threshold, and decreasing the output power of the charging circuit if the input voltage of the charging circuit is less than or equal to the preset voltage threshold.
In this embodiment of the present invention,
and if the input voltage of the charging circuit is greater than the preset voltage threshold, increasing and adjusting the output power of the charging circuit, and if the input voltage of the charging circuit is less than or equal to the preset voltage threshold, decreasing and adjusting the output power of the charging circuit.
In the embodiment of the application, the power regulating circuit reasonably controls the output power of the charging circuit according to the input voltage of the charging circuit, and on one hand, the charging device is ensured to maintain the low-power charging under the condition of reducing the volume of the charging device; on the other hand, the voltage value input by the charging circuit is ensured not to be reduced below the preset voltage threshold, so that the primary voltage of the charger is prevented from being reduced to the lowest working voltage of the power conversion module, and the power can be quickly recovered after the voltage is recovered in the next period.
In an embodiment of the present application, the adjusting unit 1104 is specifically configured to: and under the condition that the input voltage of the charging circuit is less than or equal to the preset voltage threshold, controlling the resistance value of the sub-regulating circuit of the power regulating circuit to increase so as to reduce the output power of the charging circuit.
In an embodiment of the present application, the adjusting unit 1104 is specifically configured to: and under the condition that the input voltage of the charging circuit is greater than the preset voltage threshold, controlling the resistance value of the sub-regulating circuit of the power regulating circuit to be reduced so as to increase the output power of the charging circuit.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A charging device, comprising:
a charging circuit;
a power conditioning circuit connected to the charging circuit, the power conditioning circuit comprising:
the positive phase input end of the comparison circuit is connected with the input end of the charging circuit, the negative phase input end of the comparison circuit is grounded, and the voltage of the negative phase input end is set as a preset voltage threshold value; and the combination of (a) and (b),
a first end of the sub-regulating circuit is connected with the output end of the comparison circuit, a second end of the sub-regulating circuit is grounded, and a third end of the sub-regulating circuit is connected with the charging circuit;
the comparison circuit is used for comparing the input voltage of the charging circuit with the preset voltage threshold, and the sub-regulation circuit is used for increasing the output power of the charging circuit under the condition that the input voltage of the charging circuit is greater than the preset voltage threshold, and reducing the output power of the charging circuit under the condition that the input voltage of the charging circuit is less than or equal to the preset voltage threshold.
2. The charging device of claim 1,
under the condition that the input voltage of the charging circuit is greater than the preset voltage threshold, the output end of the comparison circuit is at a high level, and the resistance value of the sub-regulation circuit is reduced so as to increase the output power of the charging circuit; and under the condition that the input voltage of the charging circuit is less than or equal to the preset voltage threshold, the output end of the comparison circuit is at a low level, and the resistance value of the sub-regulation circuit is increased so as to reduce the output power of the charging circuit.
3. The charging device of claim 2, wherein the sub-regulation circuit comprises:
the first end of the switch circuit is connected with the output end of the comparison circuit, and the second end of the switch circuit is grounded;
the first end of the resistance circuit is connected with the third end of the switch circuit, the second end of the resistance circuit is grounded, and the third end of the resistance circuit is connected with the charging circuit;
when the output end of the comparison circuit is at a high level, the switch circuit is switched on, so that the resistance value of the resistance circuit is reduced, and the output power of the charging circuit is increased; and when the output end of the comparison circuit is at a low level, the switch circuit is turned off, so that the resistance value of the resistance circuit is increased, and the output power of the charging circuit is reduced.
4. A charging arrangement as claimed in claim 3, in which the resistance circuit comprises:
a first end of the first resistor is connected with a third end of the switch circuit, and a second end of the first resistor is connected with the charging circuit;
and the first end of the second resistor is grounded, and the second end of the second resistor is connected with the charging circuit.
5. An electronic device, comprising:
the charging interface is used for being connected with an external charger;
a battery; and
the charging device of any one of claims 1 to 4, connected between the charging interface and the battery for transferring power of the external charger to the battery.
6. A charging control method applied to the charging device according to any one of claims 1 to 4, the charging control method comprising:
comparing the input voltage of the charging circuit with a preset voltage threshold;
increasing the output power of the charging circuit when the input voltage of the charging circuit is greater than the preset voltage threshold;
and reducing the output power of the charging circuit when the input voltage of the charging circuit is less than or equal to the preset voltage threshold.
7. The charge control method of claim 6, wherein the reducing the output power of the charging circuit if the input voltage of the charging circuit is less than or equal to the preset voltage threshold comprises:
and under the condition that the input voltage of the charging circuit is less than or equal to the preset voltage threshold, controlling the resistance value of the sub-regulating circuit of the power regulating circuit to be increased so as to reduce the output power of the charging circuit.
8. The charge control method of claim 6, wherein said increasing the output power of the charging circuit if the input voltage of the charging circuit is greater than the preset voltage threshold comprises:
and under the condition that the input voltage of the charging circuit is greater than the preset voltage threshold, controlling the resistance value of the sub-regulating circuit of the power regulating circuit to be reduced so as to increase the output power of the charging circuit.
9. The charge control method according to any one of claims 6 to 8,
the preset voltage threshold is greater than or equal to the lowest working voltage of the charging circuit.
10. A charging control device applied to the charging device according to any one of claims 1 to 4, comprising:
the comparison unit is used for comparing the input voltage of the charging circuit with a preset voltage threshold;
the adjusting unit is used for increasing the output power of the charging circuit under the condition that the input voltage of the charging circuit is greater than the preset voltage threshold value, and reducing the output power of the charging circuit under the condition that the input voltage of the charging circuit is less than or equal to the preset voltage threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110293988.5A CN112994167A (en) | 2021-03-19 | 2021-03-19 | Charging device, electronic apparatus, charging control method, and charging control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110293988.5A CN112994167A (en) | 2021-03-19 | 2021-03-19 | Charging device, electronic apparatus, charging control method, and charging control device |
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| CN112994167A true CN112994167A (en) | 2021-06-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116545083A (en) * | 2023-06-27 | 2023-08-04 | 荣耀终端有限公司 | Charging circuit, electronic equipment and power adapter |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040021427A1 (en) * | 2000-06-13 | 2004-02-05 | Bruwer Frederick Johannes | Intelligent switch for connecting power to a load |
| CN2829286Y (en) * | 2005-09-30 | 2006-10-18 | 海蓝星科技股份有限公司 | Power voltage-stabilization control circuit for HID lamp |
| CN102201687A (en) * | 2010-03-25 | 2011-09-28 | 富士重工业株式会社 | Charging device |
| CN105188211A (en) * | 2015-09-02 | 2015-12-23 | 绍兴恒力特微电子有限公司 | Light-emitting diode (LED) circuit compatible with low-voltage and high-voltage input and constant-power output |
| CN105375541A (en) * | 2014-08-28 | 2016-03-02 | 国基电子（上海）有限公司 | Switching type charging circuit |
| US20170155316A1 (en) * | 2015-11-30 | 2017-06-01 | Infineon Technologies Austria Ag | System and Method for a Power Conversion System |
| CN207388937U (en) * | 2017-09-29 | 2018-05-22 | 上海寰晟新能源科技有限公司 | Charging system for electric automobile based on photovoltaic power supply |
| CN210201711U (en) * | 2019-07-08 | 2020-03-27 | 惠州市德赛西威汽车电子股份有限公司 | Circuit for reducing sleep current of vehicle-mounted multimedia system |
| CN210201546U (en) * | 2019-08-08 | 2020-03-27 | 上海飞科电器股份有限公司 | Charging current control device of lithium battery and electric toothbrush |
-
2021
- 2021-03-19 CN CN202110293988.5A patent/CN112994167A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040021427A1 (en) * | 2000-06-13 | 2004-02-05 | Bruwer Frederick Johannes | Intelligent switch for connecting power to a load |
| CN2829286Y (en) * | 2005-09-30 | 2006-10-18 | 海蓝星科技股份有限公司 | Power voltage-stabilization control circuit for HID lamp |
| CN102201687A (en) * | 2010-03-25 | 2011-09-28 | 富士重工业株式会社 | Charging device |
| CN105375541A (en) * | 2014-08-28 | 2016-03-02 | 国基电子（上海）有限公司 | Switching type charging circuit |
| CN105188211A (en) * | 2015-09-02 | 2015-12-23 | 绍兴恒力特微电子有限公司 | Light-emitting diode (LED) circuit compatible with low-voltage and high-voltage input and constant-power output |
| US20170155316A1 (en) * | 2015-11-30 | 2017-06-01 | Infineon Technologies Austria Ag | System and Method for a Power Conversion System |
| CN207388937U (en) * | 2017-09-29 | 2018-05-22 | 上海寰晟新能源科技有限公司 | Charging system for electric automobile based on photovoltaic power supply |
| CN210201711U (en) * | 2019-07-08 | 2020-03-27 | 惠州市德赛西威汽车电子股份有限公司 | Circuit for reducing sleep current of vehicle-mounted multimedia system |
| CN210201546U (en) * | 2019-08-08 | 2020-03-27 | 上海飞科电器股份有限公司 | Charging current control device of lithium battery and electric toothbrush |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116545083A (en) * | 2023-06-27 | 2023-08-04 | 荣耀终端有限公司 | Charging circuit, electronic equipment and power adapter |
| CN116545083B (en) * | 2023-06-27 | 2024-07-09 | 荣耀终端有限公司 | Charging circuit, electronic equipment and power adapter |
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