CN112910039A - Power conversion device and charging system - Google Patents
Power conversion device and charging system Download PDFInfo
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- CN112910039A CN112910039A CN202110110340.XA CN202110110340A CN112910039A CN 112910039 A CN112910039 A CN 112910039A CN 202110110340 A CN202110110340 A CN 202110110340A CN 112910039 A CN112910039 A CN 112910039A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 90
- 238000004891 communication Methods 0.000 claims description 36
- 238000013507 mapping Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 8
- 230000005236 sound signal Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 210000005069 ears Anatomy 0.000 description 2
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the invention discloses a power conversion device and a charging system, wherein the power conversion device comprises: the input interface is provided with a first connecting end corresponding to the electric equipment; the output interface is provided with a second connecting end corresponding to the power supply equipment; a control module; and a first input end of the voltage conversion module is connected with a first output end of the input interface, a second input end of the voltage conversion module is connected with an output end of the control module, and an output end of the voltage conversion module is connected with an input end of the output interface.
Description
Technical Field
The present invention relates to the field of electronics, and more particularly, to a power conversion apparatus and a charging system.
Background
With the rapid development of communication technology, intelligent terminals are becoming more and more popular, and various charging devices and various electric devices are filling the lives of users.
In the prior art, an electric device (a mobile phone terminal) and a power supply device (a charger) communicate through a USB cable, and a protocol logic module of the charger controls output power to meet a power request of the electric device.
In the process of implementing the present application, the inventors found that the following problems exist in the prior art: when the charger charges the mobile phone terminal, the current in the charger flows through the conductive material to generate mechanical vibration consistent with the current frequency, and when the mechanical vibration frequency reaches the audible range of human ears, the human ears can hear the abnormal sounds of "sibilant", "buzzing" and the like, thereby seriously affecting the user experience.
Disclosure of Invention
The embodiment of the invention provides power supply conversion equipment, which aims to solve the problem that in the prior art, abnormal sound exists in power supply equipment when the power supply equipment is used, and user experience is influenced.
In a first aspect, an embodiment of the present invention provides a power conversion apparatus, which includes:
the input interface is provided with a first connecting end, and the first connecting end is used for connecting power supply equipment;
the output interface is provided with a second connecting end which is used for connecting electric equipment;
a control module;
a first input end of the voltage conversion module is connected with a first output end of the input interface, a second input end of the voltage conversion module is connected with an output end of the control module, and a first output end of the voltage conversion module is connected with an input end of the output interface;
the control module is used for acquiring a current value of charging current input to the voltage conversion module through the input interface and acquiring an intensity value of a noise signal acquired by the electric equipment connected with the second connecting end;
the control module determines an intensity value of a maximum noise signal matched with the current value, and controls the voltage conversion module to reduce the current value of the charging current when the intensity value of the noise signal is greater than the intensity value of the maximum noise signal.
In a second aspect, an embodiment of the present invention further provides a charging system, which includes:
the power conversion apparatus of the first aspect above, having an input interface and an output interface;
the power supply equipment is connected with the input interface;
and the electric equipment is connected with the output interface.
In the embodiment of the invention, the power conversion equipment is provided with an input interface, an output interface, a voltage conversion module and a control module, wherein the control module can acquire the current value of the charging current input to the voltage conversion module through the input interface and the intensity value of the noise signal acquired by the electric equipment connected with the second connecting end, and further determine the intensity value of the maximum noise signal matched with the current value, so that under the condition that the intensity value of the noise signal is greater than the intensity value of the maximum noise signal, the voltage conversion module is controlled to reduce the current value of the charging current, the abnormal sound problem during charging can be avoided, the charging environment is quieter, and the user experience is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a power conversion device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a charging system according to an embodiment of the present invention;
description of reference numerals:
10-power conversion equipment, 110-input interface, 120-output interface, 130-control module, 140-voltage conversion module, 150-first communication module, 160-second communication module, 170-storage module, 180-drive module, 190-power supply module, 20-power supply equipment and 30-electric equipment
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.
Fig. 1 is a schematic structural diagram of a power conversion apparatus 10 according to an embodiment of the present invention. The power conversion apparatus 10 includes: an input interface 110, an output interface 120, a control module 130, and a voltage conversion module 140.
The input interface 110 has a first connection end, and the first connection end is used for connecting the power supply device 20. The output interface 120 has a second connection for connecting the consumer 30. A first input terminal of the voltage conversion module 130 is connected to a first output terminal of the input interface 110, a second input terminal of the voltage conversion module 140 is connected to an output terminal of the control module 130, and a first output terminal of the voltage conversion module 140 is connected to an input terminal of the output interface 120.
Illustratively, the power supply device 20, such as a charger, can be connected to the power conversion device 10 through the first connection end of the input interface 110. Through the second connection end of the output interface 120, any one of the power supply devices 20, such as a mobile phone, a tablet computer, a notebook computer, a palm computer, a wearable device, etc., can be connected to the power conversion device 10, so as to achieve the purpose that the power supply device 20 supplies power to the electric equipment 30.
In this embodiment, the control module 130 can obtain the current value of the charging current input to the voltage conversion module 140 through the input interface 110, and obtain the intensity value of the noise signal collected by the electric device 30 connected to the second connection end, so as to determine the intensity value of the maximum noise signal matched with the current value, and control the voltage conversion module to reduce the current value of the charging current when the intensity value of the noise signal is greater than the intensity value of the maximum noise signal. And the control module 130 controls the voltage conversion module 140 to supply power to the electric device at the current value of the charging current when the intensity value of the noise signal is less than or equal to the intensity value of the maximum noise signal value.
According to the embodiment, the power conversion device is provided with the input interface, the output interface, the voltage conversion module and the control module, the control module can acquire the current value of the charging current input to the voltage conversion module through the input interface and the intensity value of the noise signal collected by the electric equipment connected with the second connecting end, and further determine the intensity value of the maximum noise signal matched with the current value, so that under the condition that the intensity value of the noise signal is greater than the intensity value of the maximum noise signal, the voltage conversion module is controlled to reduce the current value of the charging current, the abnormal sound problem during charging can be avoided, the charging environment is quieter, and the user experience is improved.
In one embodiment, as shown in fig. 1, the power conversion apparatus 10 further includes a first communication module 150. An input terminal of the first communication module 150 is connected to the second output terminal of the input interface 110, and an output terminal of the first communication module 150 is connected to the first input terminal of the control module 130.
In this embodiment, the first communication module 160 can obtain the current value of the charging current input to the voltage conversion module 140 through the input interface 110 and transmit the current value of the charging current to the control module 130.
Specifically, taking the power supply device 10 as an example of a charger, when the charger is plugged into the first connection end of the input interface 110, the control module 130 initiates a communication handshake with the charger through the first communication module 150, and the control module 130 obtains a current value of the charging current input to the voltage conversion module 140 through the input interface 110 through the first communication module 150.
As a first example, the current value of the charging current that the control module 130 acquires through the first communication module 150 and inputs to the voltage conversion module 140 through the input interface 110 may be 9A.
As a second example, the current value of the charging current that the control module 130 obtains through the first communication module 150 and inputs to the voltage conversion module 140 through the input interface 110 may be 1A.
In one embodiment, as shown in fig. 1, the power conversion device 10 further includes a second communication module 160. An input terminal of the second communication module 160 is connected to an output terminal of the output interface 120, and an output terminal of the second communication module 170 is connected to a second input terminal of the control module 170.
In this embodiment, the second communication module 160 can obtain the intensity value of the noise signal collected by the electric device 30 connected to the second connection end, and send the intensity value of the noise signal to the control module 130.
Specifically, taking the electrical device 30 as a mobile phone as an example, when the mobile phone is plugged into the second connection end of the output interface 120, the control module 130 initiates a communication handshake with the mobile phone through the second communication module 170, and the microphone of the mobile phone sends the acquired intensity value of the noise signal to the control module 130 through the second communication module 170.
For example, in a case where the charging environment is quiet, the intensity value of the noise signal collected by the microphone of the mobile phone may be directly used as a "hissing" or "hum" abnormal sound signal generated when the charger is charged.
For another example, in the case that there is other noise in the charging environment, the processor inside the mobile phone processes the collected noise signal after the microphone of the mobile phone collects the noise signal, so as to extract the "sibilant" and "hum" abnormal sound signals generated when the charger is charging. It is understood that "hissing", "hum", etc. abnormal sound signals are signals located within a particular frequency band.
For example, in the case that there is a voice signal in the charging environment, the microphone of the mobile phone may collect the environmental sound signal first, and the environmental sound signal is processed by the electric equipment 30, for example, a processor inside the mobile phone, to extract the "sibilant" and "hum" abnormal sound signals generated when the charger is charging.
Continuing with the first example, the control module 130 may obtain the intensity value of the noise signal collected by the electric device 30 through the second communication module 160 as F.
Continuing with the second example, the control module 130 may obtain the intensity value of the noise signal collected by the electric device 30 through the second communication module 170 as E.
In one embodiment, as shown in fig. 1, the power conversion apparatus 10 further includes a storage module 170, an output terminal of the storage module 170 is connected to the third input terminal of the control module 130, and the storage module 170 is configured to store mapping data representing a mapping relationship between a current value of the charging current and an intensity value of the maximum noise signal.
Continuing with the example of the power supply device 20 as a charger, when the current value of the charging current of the charger is less than 2A, the intensity value of the maximum noise signal is Lever 1. When the current value of the charging current of the charger is greater than 2A, the intensity value of the maximum noise signal is Lever 2.
Specifically, after acquiring the current value of the charging current input to the voltage conversion module 140 through the input interface 110, the control module 130 may acquire the mapping data from the storage module 170; and determining an intensity value of the maximum noise signal mapped to the current value of the charging current according to the above mapping data and the current value of the charging current.
Continuing with the first example, the control module 130 may obtain the intensity value of the maximum noise signal Lever2 from the storage module when the current value of the charging current input to the voltage conversion module 140 through the input interface 110 is 9A, where the control module 130 compares the intensity value Lever2 of the maximum noise signal with the intensity value F of the noise signal above, and controls the voltage conversion module 140 to perform voltage conversion to reduce the current value of the charging current by, for example, 1A when the intensity value F of the noise signal is greater than the intensity value Lever2 of the maximum noise signal, that is, the charger continues to charge the mobile phone with the current value 8A of the charging current. On the contrary, when the intensity value F of the noise signal is less than or equal to the intensity value Lever2 of the maximum noise signal, the control module 130 controls the voltage conversion module 140 to continue charging the mobile phone with the current value 9A of the charging current.
Continuing with the second example, if the current value of the charging current input to the voltage conversion module 140 through the input interface 110 is 1A, the control module 130 may obtain the intensity value of the maximum noise signal Lever1 from the storage module. Here, the control module 130 compares the intensity value Lever1 of the maximum noise signal with the intensity value E of the noise signal above, and controls the voltage conversion module 140 to perform voltage conversion to reduce the current value of the charging current, for example, to reduce the current value by 50mA, that is, the charger continues to charge the mobile phone with the current value of the charging current of 0.95A, when the intensity value E of the noise signal is greater than the intensity value Lever1 of the maximum noise signal. On the contrary, when the intensity value E of the noise signal is less than or equal to the intensity value Lever1 of the maximum noise signal, the control module 130 controls the voltage conversion module 140 to continue charging the mobile phone with the current value 1A of the charging current.
According to this embodiment, different maximum noise signal strength values are preset in the storage module 170 of the power conversion device 10, so that different maximum noise signal strength values can be selected according to different power supply devices 20, thereby implementing customization.
In one embodiment, as shown in fig. 1, the power conversion apparatus 10 further includes a driving module 180. A second input terminal of the voltage conversion module 140 is connected to the output terminal of the control module 130 through the driving module 180.
In this embodiment, the control module 130 may control the voltage conversion module 140 to perform voltage conversion through the driving module 180.
Continuing with the first example, when the intensity value F of the noise signal is greater than the intensity value Lever2 of the maximum noise signal, the control module 130 controls the voltage conversion module 140 to perform voltage conversion through the driving module 180 to reduce the current value of the charging current, for example, by 1A, that is, the charger continues to charge the mobile phone with the charging current value 8A
Continuing with the second example, when the intensity value E of the noise signal is greater than the intensity value Lever1 of the maximum noise signal, the control module 130 controls the voltage conversion module 140 to perform voltage conversion through the driving module 180 to reduce the current value of the charging current, for example, by 50mA, that is, the charger continues to charge the mobile phone with the current value of the charging current being 0.95A.
In one embodiment, as shown in fig. 1, the power conversion apparatus 10 further includes a power module 190, an input terminal of the power module 190 is connected to the second output terminal of the voltage conversion module 140, and an output terminal of the power module 190 is connected to the fourth input terminal of the control module 130.
In this embodiment, the power module 190 may supply power to the control module 130 to ensure the normal operation of the control module 130.
The embodiment of the present invention further provides a charging system, where the charging system includes any one of the power conversion device 10, the power supply device 20, and the electric device 30 provided in the foregoing embodiment, the power conversion device 10 has an input interface 110 and an output interface 120, the power supply device 20 is connected to the input interface 110, and the electric device 30 is connected to the output interface 120.
In this embodiment, since the charging system provided by the embodiment of the present invention includes any one of the power conversion devices 10 provided in the above-described embodiment section, the charging system provided by the embodiment of the present invention can achieve the same function as any one of the power conversion devices 10 provided in the above-described embodiment section. That is, in the embodiment of the present invention, the power conversion device is provided with an input interface, an output interface, a voltage conversion module, and a control module, where the control module may obtain a current value of a charging current input to the voltage conversion module through the input interface, and obtain an intensity value of a noise signal collected by a power consumption device connected to the second connection terminal, and further determine an intensity value of a maximum noise signal matched with the current value, so as to control the voltage conversion module to reduce the current value of the charging current when the intensity value of the noise signal is greater than the intensity value of the maximum noise signal, thereby avoiding a noise problem during charging, making a charging environment quieter, and improving user experience.
Next, an example of a charging method is shown, in which the power supply device 10 is a charger and the power consumption device 30 is a mobile phone, and in this example, as shown in fig. 2, the charging method includes:
s10, in case that the charger is plugged into the first connection terminal, the control module 130 starts up, a communication handshake is initiated through the first communication module 150 and the charger 10, and the control module 130 acquires the current value of the charging current input to the voltage conversion module 140 through the first communication module 150.
At S20, the control module 130 determines an intensity value of the maximum noise signal matching the current value of the charging current from the mapping data indicating the mapping relationship between the current value of the charging current and the intensity value of the maximum noise signal stored in the storage module 170, based on the acquired current value of the charging current.
S30, when the mobile phone is plugged into the second connection end, the control module 130 initiates a communication request with the mobile phone through the second communication module 160, the microphone of the mobile phone internally processes the intensity value of the collected noise signal and transmits the processed intensity value to the second communication module 160, and the second communication module 160 transmits the collected intensity value of the noise signal to the control module 130.
S40, the control module 130 compares the intensity value of the collected noise signal with the intensity value of the maximum noise signal, and controls the voltage conversion module 140 to perform voltage conversion by the driving module 180 to change the charging current, for example, by 50mA, if the intensity value of the collected noise signal is greater than the intensity value of the maximum noise signal.
S50, after changing the charging current for 5min, the control module 130 continues to execute the above S40, and when the collected intensity value of the noise signal is still greater than the intensity value of the maximum noise signal, the control module 180 continues to control the voltage conversion module 140 to perform voltage conversion, so as to change the charging current, for example, to reduce 50mA, otherwise, the default output is maintained.
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. The term "comprising" is used to specify the presence of stated features, integers, steps, operations, elements, components, operations.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A power conversion apparatus, comprising:
the input interface is provided with a first connecting end, and the first connecting end is used for connecting power supply equipment;
the output interface is provided with a second connecting end which is used for connecting electric equipment;
a control module;
a first input end of the voltage conversion module is connected with a first output end of the input interface, a second input end of the voltage conversion module is connected with an output end of the control module, and a first output end of the voltage conversion module is connected with an input end of the output interface;
the control module is used for acquiring a current value of charging current input to the voltage conversion module through the input interface and acquiring an intensity value of a noise signal acquired by the electric equipment connected with the second connecting end;
the control module determines an intensity value of a maximum noise signal matched with the current value, and controls the voltage conversion module to reduce the current value of the charging current when the intensity value of the noise signal is greater than the intensity value of the maximum noise signal.
2. The apparatus of claim 1, further comprising a first communication module,
the input end of the first communication module is connected with the second output end of the input interface, and the output end of the first communication module is connected with the first input end of the control module;
the first communication module is used for acquiring a current value of the charging current input to the voltage conversion module through the input interface and sending the current value to the control module.
3. The apparatus of claim 1, further comprising a second communication module,
the input end of the second communication module is connected with the output end of the output interface, the output end of the second communication module is connected with the second input end of the control module,
the second communication module is used for acquiring the intensity value of the noise signal collected by the electric equipment connected with the second connecting end and sending the intensity value of the noise signal to the control module.
4. The apparatus of claim 1, further comprising a storage module,
the output end of the storage module is connected with the third input end of the control module;
the storage module is used for storing mapping data representing the mapping relation between the current value of the charging current and the intensity value of the maximum noise signal.
5. The apparatus of claim 4, wherein the control module determines the strength value of the maximum noise signal that matches the current value comprises:
the control module is used for acquiring the mapping data from the storage module; and determining an intensity value of a maximum noise signal mapped to the current value according to the mapping data and the current value of the charging current.
6. The apparatus of claim 1, further comprising a drive module,
and the second input end of the voltage conversion module is connected with the output end of the control module through the driving module.
7. The apparatus of claim 1, further comprising a power module,
the input end of the power supply module is connected with the second output end of the voltage conversion module, and the output end of the power supply module is connected with the fourth input end of the control module.
8. The apparatus of claim 1,
the control module controls the voltage conversion module to supply power to the electric equipment at the current value of the charging current when the intensity value of the noise signal is smaller than or equal to the intensity value of the maximum noise signal value.
9. A charging system, comprising:
the power conversion device of any of claims 1-8, having an input interface and an output interface;
the power supply equipment is connected with the input interface;
and the electric equipment is connected with the output interface.
10. The system of claim 9, wherein the powered device comprises a microphone configured to collect an intensity value of a noise signal and transmit the intensity value of the noise signal to the power conversion device.
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