CN104184304A - Power conversion method and device - Google Patents
Power conversion method and device Download PDFInfo
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- CN104184304A CN104184304A CN201310198395.6A CN201310198395A CN104184304A CN 104184304 A CN104184304 A CN 104184304A CN 201310198395 A CN201310198395 A CN 201310198395A CN 104184304 A CN104184304 A CN 104184304A
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Abstract
The invention discloses a power conversion method and device. The invention relates to the technical field of electronics, and particularly relates to the power conversion method and device. The method comprises the steps that conversion input voltage inputted to the power conversion device is detected to be first input voltage; conversion output power of the power conversion device is confirmed to be first output power corresponding to the first input voltage based on the corresponding relation between input voltage and output power; and the first output power is outputted based on the first input voltage so that the technical problem that a power supply adapter in the prior art only can support one type of power supply with specific output power for charging is solved, and the technical effect that the power supply adapter can support multiple types of power supplies with different output power for charging is realized.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to a kind of method for power conversion and device.
Background technology
Along with scientific and technological progress and development, the application of electronic equipment in people's life is increasingly extensive, as: people can use mobile phone to converse, can use game machine to play games, and people can carry light and handy portable notebook computer, for work and leisure etc., due in real life, electronic device is not directly used household power often, because family is used, it is the supply voltage of 220 volts, and the general required supply voltage of general electronic product is about 5 volts to 20 volts, so the electronic equipment in our life just be unable to do without corresponding power supply adaptor.The effect of power supply adaptor is to convert the high voltage of family to workable stable low-voltage, and they can normally be worked.And will bring a lot of inconvenience to our daily use without its words.
Along with the continuous renewal of electronic equipment and the continuous increase of electronic equipment kind, there is on the market now increasing large power, electrically source adapter, can be used in the electronic equipment to us on different power supplys charges, as: can be inserted on automobile and charge to notebook, also can insert aboard and charge to notebook.But find in the process of using, because aircraft is different to the requirement of power output with automobile, some power supply adaptors can charge to electronic equipment on automobile, but but can not charge to electronic equipment aboard, as the direct current jack fan-out capability on aircraft only has 75W, if surpass 75W, will trigger fuse action.
But in the process of present inventor's invention technical scheme in realizing the embodiment of the present application, find that above-mentioned technology at least exists following technical problem:
User is when using power supply adaptor to charge to electronic equipment, because power supply adaptor of the prior art can only provide a kind of power output, so existing, power supply adaptor of the prior art can only support the technical problem that a kind of power supply of exporting certain power charges.
Further, because power supply adaptor of the prior art can only provide a kind of power output, and after being connected to different electrical power, can cannot use power supply adaptor, so power supply adaptor of the prior art exists power output single, and the technical problem that versatility is lower.
Summary of the invention
The embodiment of the present application is by providing a kind of method for power conversion and device, solved power supply adaptor existence in prior art and can only support the technical problem that a kind of power supply of exporting certain power charges, realized power supply adaptor and can support the technique effect that the power supply of multiple different output power charges.
The embodiment of the present application provides a kind of method for power conversion, is applied in a power conversion device, and described method comprises:
What detection was input to described power conversion device changes input voltage into the first input voltage;
Corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage;
Based on described the first input voltage, export described the first power output.
Further, what described detection was input to described power conversion device changes input voltage into the first input voltage, is specially:
Voltage detecting circuit by described power conversion device detect be input to described power conversion device change input voltage into the first input voltage.
Further, described voltage detecting circuit specifically comprises:
The first resistance, comprises first end and the second end, and wherein, described first end is connected with the input circuit of described power conversion device, and described the second end is connected with the first interface of described power conversion device;
The second resistance, comprises the 3rd end and the 4th end, wherein, described the 3rd end ground connection, described the 4th end is connected with described first interface;
Voltage comparator, comprises first anodal and the first negative pole, and described the first positive pole is connected with described first interface, and described the first negative pole is connected with the first reference power supply.
Further, the described voltage detecting circuit by described power conversion device detect be input to described power conversion device change input voltage into the first input voltage, specifically comprise:
Described the first positive pole obtains the first voltage to be compared from the first power power supply to be converted, and described the first negative pole obtains the first normal voltage from described the first reference power supply;
Described the first voltage to be compared and described the first normal voltage are compared, obtain the first comparative result;
In the first normal voltage described in described the first comparative result shows described the first voltage ratio to be compared when large, the default high level of described voltage comparator output first, now, the described first default high level is described the first input voltage;
At described the first comparative result, show the first normal voltage hour described in described the first voltage ratio to be compared, the default low level of described voltage comparator output first, now, the described first default low level is described the first input voltage.
Further, the described corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage, is specially:
Corresponding relation based between input voltage and power output, by connecting output current control circuit with described voltage detecting circuit and determine that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage in described power conversion device.
Further, described output current control circuit specifically comprises:
The 3rd resistance, comprises five terminal and the 6th end, and described five terminal is connected from second interface different with described first interface of described power conversion device;
The 4th resistance, comprises the 7th end and the 8th end, and described the 7th end is connected with described the second interface, described the 8th end ground connection;
The 5th resistance, comprises the 9th end and the tenth end, and described the 9th end is connected with the second reference power supply, and described the tenth end is connected with described the second interface;
The first switch, comprises the tenth one end and the 12 end, described the tenth one end and described six end connecting, described the 12 end ground connection;
The first current comparator, comprises second anodal and the second negative pole, and described the second positive pole is connected with the first current discharge device of described power conversion device, and described the second negative pole is connected with described the second interface;
The first control module, comprises the 13 end and the 14 end, and described the 13 end is connected with described the first current comparator, and described the 14 end is connected with the power output circuit in described power conversion device.
Further, the described corresponding relation based between input voltage and power output, by connecting output current control circuit with described voltage detecting circuit and determine that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage in described power conversion device, specifically comprise:
Described the second negative pole obtains the first normalized current from described the first reference power supply, and described the second positive pole obtains the first electric current to be compared from described the first current amplifier;
More described the first normalized current and described the first electric current to be compared, obtain the second comparative result;
Based on described the second comparative result, described the first current comparator is exported the first electric current to described the first control module;
Based on described the first electric current, described the first control module produces the first control command;
Carry out described the first control command, take and determine that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage.
Further, described based on described the second comparative result, described the first current comparator is exported the first electric current to described the first control module, specifically comprises:
Described in described the second comparative result shows described the first current ratio to be compared, the first normalized current is when large, described the first current comparator is exported the first predetermined current, and now, described the first predetermined current is described the first electric current;
At described the second comparative result, show the first normalized current hour described in described the first current ratio to be compared, described the first current comparator is exported the second predetermined current, and now, described the second predetermined current is described the first electric current.
Further, described based on described the first input voltage, export described the first power output, be specially:
Based on described the first input voltage, by the described power output circuit being connected with described output current control circuit in described power conversion device, export described the first power output.
Further, described power output circuit specifically comprises:
The 6th resistance, comprises the tenth five terminal and the 16 end, and described the tenth five terminal is connected with the input circuit of described power conversion device, and described the 16 end is connected from the 3rd interface different with described first and second interface of described power conversion device;
The 7th resistance, comprises the 17 end and the 18 end, and described the 17 end is connected with described the 3rd interface, and described the 18 end is connected with the output circuit of described power conversion device;
Second switch, is connected with described the 14 end, and described second switch comprises the 19 end and the 20 end, and described the 19 end is connected with described the tenth five terminal, and described 20 ends are connected with described the 3rd interface.
Further, described based on described the first input voltage, by the power output circuit being connected with described output current control circuit in described power conversion device, export described the first power output, specifically comprise:
Based on described the first input voltage, described the first control module produces the first control command;
By carrying out described the first control command, control described second switch in on-state or off-state;
When described second switch in described on-state constantly, described the 7th resistance produces the second electric current;
Based on described the second electric current, described power output circuit is exported described the first power output;
When described second switch is during in described off-state, described the 7th resistance produces the 3rd electric current;
Based on described the 3rd electric current, described power output circuit is exported described the first power output.
On the other hand, the embodiment of the present application provides a kind of power conversion device, comprising:
Voltage detecting circuit, changes input voltage into the first input voltage for detection of what be input to described power conversion device;
Output current control circuit, is connected with described voltage detecting circuit, for the corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage;
Power output circuit, is connected with described output current control circuit, for based on described the first input voltage, exports described the first power output.
Wherein, described voltage detecting circuit specifically comprises:
The first resistance, comprises first end and the second end, and wherein, described first end is connected with the input circuit of described power conversion device, and described the second end is connected with the first interface of described power conversion device;
The second resistance, comprises the 3rd end and the 4th end, wherein, described the 3rd end ground connection, described the 4th end is connected with described first interface;
Voltage comparator, comprises first anodal and the first negative pole, and described the first positive pole is connected with described first interface, and described the first negative pole is connected with the first reference power supply.
Wherein, described output current control circuit specifically comprises:
The 3rd resistance, comprises five terminal and the 6th end, and described five terminal is connected from second interface different with described first interface of described power conversion device;
The 4th resistance, comprises the 7th end and the 8th end, and described the 7th end is connected with described the second interface, described the 8th end ground connection;
The 5th resistance, comprises the 9th end and the tenth end, and described the 9th end is connected with the second reference power supply, and described the tenth end is connected with described the second interface;
The first switch, comprises the tenth one end and the 12 end, described the tenth one end and described six end connecting, described the 12 end ground connection;
The first current comparator, comprises second anodal and the second negative pole, and described the second positive pole is connected with the first current discharge device of described power conversion device, and described the second negative pole is connected with described the second interface;
The first control module, comprises the 13 end and the 14 end, and described the 13 end is connected with described the first current comparator, and described the 14 end is connected with the power output circuit in described power conversion device.
Wherein, described power output circuit specifically comprises:
The 6th resistance, comprises the tenth five terminal and the 16 end, and described the tenth five terminal is connected with the input circuit of described power conversion device, and described the 16 end is connected from the 3rd interface different with described first and second interface of described power conversion device;
The 7th resistance, comprises the 17 end and the 18 end, and described the 17 end is connected with described the 3rd interface, and described the 18 end is connected with the output circuit of described power conversion device;
Second switch, is connected with described the 14 end, and described second switch comprises the 19 end and the 20 end, and described the 19 end is connected with described the tenth five terminal, and described 20 ends are connected with described the 3rd interface.
The one or more technical schemes that provide in the embodiment of the present application, at least have following technique effect or advantage:
Owing to having adopted first, detect be input to described power conversion device change input voltage into the first input voltage, then, the corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage, finally, based on described the first input voltage, export the technological means of described the first power output, , first detect the size of input voltage, then according to the size of input voltage, determine corresponding power output size, the size of finally controlling output current realizes corresponding power output, power supply adaptor can carry out power transfer according to different power supplys and charge, so, efficiently solve power supply adaptor existence in prior art and can only support the technical problem that a kind of power supply of exporting certain power charges, and then realized power supply adaptor and can support the technique effect that the power supply of multiple different output power charges.
Further, owing to having adopted first, detect be input to described power conversion device change input voltage into the first input voltage, then, the corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage, finally, based on described the first input voltage, export the technological means of described the first power output, , first detect the size of input voltage, then according to the size of input voltage, determine corresponding power output size, the size of finally controlling output current realizes corresponding power output, therefore, utilize the technical scheme that the application provides that different power outputs can be provided, so, efficiently solving power supply adaptor in prior art exists power output single, the technical problem that versatility is lower, and then realized power supply adaptor and can export multiple power output, the technique effect that versatility is higher.
Accompanying drawing explanation
Fig. 1 is the flow chart of method for power conversion in the embodiment of the present application one;
Fig. 2 is the structure chart of power conversion device in the embodiment of the present application one;
Fig. 3 is the structure chart of voltage detecting circuit in the embodiment of the present application one;
Fig. 4 is the structure chart of output current control circuit in the embodiment of the present application one;
Fig. 5 is the structure chart of power output circuit in the embodiment of the present application one.
Embodiment
The embodiment of the present application is by providing a kind of method for power conversion and device, solved power supply adaptor existence in prior art and can only support the technical problem that a kind of power supply of exporting certain power charges, realized power supply adaptor and can support the technique effect that the power supply of multiple different output power charges.
Technical scheme during the application implements is for solving the problems of the technologies described above.General thought is as follows:
First, detect be input to described power conversion device change input voltage into the first input voltage; Then, the corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage; Finally, based on described the first input voltage, export described the first power output,, first detect the size of input voltage, then according to the size of input voltage, determine corresponding power output size, the size of finally controlling output current realizes corresponding power output, so, efficiently solve power supply adaptor existence in prior art and can only support the technical problem that a kind of power supply of exporting certain power charges, realized power supply adaptor and can support the technique effect that the power supply of multiple different output power charges.
In order better to understand technique scheme, below in conjunction with Figure of description and concrete execution mode, technique scheme is described in detail.
Embodiment mono-
Please refer to Fig. 1-5, in embodiment mono-, a kind of method for power conversion is provided, be applied in a power conversion device, described power conversion device can carry out power transfer for electronic equipment, in actual applications, described electronic equipment can be panel computer, can be mobile phone, can be also game machine, and the application does not do concrete restriction.Method for power conversion in the embodiment of the present application specifically comprises:
S10, detect be input to described power conversion device change input voltage into the first input voltage.
Wherein, in the embodiment of the present application, what described detection was input to described power conversion device changes input voltage into the first input voltage, is specially:
Voltage detecting circuit by described power conversion device detect be input to described power conversion device change input voltage into the first input voltage.
Please refer to Fig. 3, in the embodiment of the present application, described voltage detecting circuit 101 specifically comprises:
The first resistance 1011, comprises first end and the second end, and wherein, described first end is connected with the input circuit of described power conversion device, and described the second end is connected with the first interface of described power conversion device;
The second resistance 1012, comprises the 3rd end and the 4th end, wherein, described the 3rd end ground connection, described the 4th end is connected with described first interface;
Voltage comparator 1013, comprises first anodal and the first negative pole, and described the first positive pole is connected with described first interface, and described the first negative pole is connected with the first reference power supply.
Wherein, in the embodiment of the present application, the described voltage detecting circuit 101 by described power conversion device detect be input to described power conversion device change input voltage into the first input voltage, specifically comprise:
Described the first positive pole obtains the first voltage to be compared from the first power power supply to be converted, and described the first negative pole obtains the first normal voltage from described the first reference power supply;
Described the first voltage to be compared and described the first normal voltage are compared, obtain the first comparative result;
In the first normal voltage described in described the first comparative result shows described the first voltage ratio to be compared when large, the default high level of described voltage comparator output first, now, the described first default high level is described the first input voltage;
At described the first comparative result, show the first normal voltage hour described in described the first voltage ratio to be compared, the default low level of described voltage comparator output first, now, the described first default low level is described the first input voltage.
The operation principle of voltage detecting circuit will be introduced for example below.
Suppose that electronic equipment is a notebook computer, and user thinks to notebook computer, to charge aboard, in the prior art, because the direct current jack fan-out capability on aircraft only has 75W, if surpass 75W, will trigger fuse action, and the power supply adaptor power output of user's notebook to be 90W cannot use, and adopt the method for power conversion of this programme just can realize user, to notebook computer, charge aboard, specifically, implementation procedure is as follows:
User inserts the power supply adaptor of notebook computer in socket aboard, suppose that the VD on aircraft is 16V, the output voltage of the power supply that at this moment voltage detecting circuit detects is 16V, with reference to the voltage detecting circuit schematic diagram in figure 2, at this moment the input voltage of input voltage detection circuit is just 16V, and then the voltage to be compared of input voltage comparator is just 16V; The operation principle of voltage comparator is for to compare input voltage and a reference power supply, if input voltage is higher than normal voltage, just exports a default high level, supposes that high level is 5V; If input voltage forces down than standard electric, just export a default low level, suppose that low level is 2V; If the voltage of the first reference power supply is now 14V, at this moment input voltage 16V is just high than normal voltage, so now voltage comparator output high level 5V, at this moment the first input voltage is just 5V, then power conversion device is controlled corresponding output current according to the input voltage of 5V, make the power output of the voltage adapter of notebook reduce to 70W, meet the instructions for use on aircraft.
In actual applications, two kinds of level that voltage comparator produces, as the 5V in above-mentioned example and 2V, wherein, the high level of 5V can produce and drive connecting or disconnecting of control switch, and the 2V low level producing just can not produce and drives control switch, so just can realize by judging that the size of input voltage realizes the control of circuit.
After step S10, the method for the embodiment of the present application just enters step S20, that is: the corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage.
Wherein, in the embodiment of the present application, the described corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage, is specially:
Corresponding relation based between input voltage and power output, by connecting output current control circuit with described voltage detecting circuit and determine that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage in described power conversion device.
Wherein, please refer to Fig. 4, in the embodiment of the present application, described output current control circuit 102 specifically comprises:
The 3rd resistance 1021, comprises five terminal and the 6th end, and described five terminal is connected from second interface different with described first interface of described power conversion device;
The 4th resistance 1022, comprises the 7th end and the 8th end, and described the 7th end is connected with described the second interface, described the 8th end ground connection;
The 5th resistance 1023, comprises the 9th end and the tenth end, and described the 9th end is connected with the second reference power supply, and described the tenth end is connected with described the second interface;
The first switch 1024, comprises the tenth one end and the 12 end, described the tenth one end and described six end connecting, described the 12 end ground connection;
The first current comparator 1025, comprises second anodal and the second negative pole, and described the second positive pole is connected with the first current discharge device of described power conversion device, and described the second negative pole is connected with described the second interface;
The first control module 1026, comprises the 13 end and the 14 end, and described the 13 end is connected with described the first current comparator, and described the 14 end is connected with the power output circuit in described power conversion device.
Wherein, in the embodiment of the present application, the described corresponding relation based between input voltage and power output, by connecting output current control circuit with described voltage detecting circuit and determine that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage in described power conversion device, specifically comprise:
Described the second negative pole obtains the first normalized current from described the first reference power supply, and described the second positive pole obtains the first electric current to be compared from described the first current amplifier;
More described the first normalized current and described the first electric current to be compared, obtain the second comparative result;
Based on described the second comparative result, described the first current comparator is exported the first electric current to described the first control module;
Based on described the first electric current, described the first control module produces the first control command;
Carry out described the first control command, take and determine that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage.
Wherein, in the embodiment of the present application, described based on described the second comparative result, described the first current comparator is exported the first electric current to described the first control module, specifically comprises:
Described in described the second comparative result shows described the first current ratio to be compared, the first normalized current is when large, described the first current comparator is exported the first predetermined current, and now, described the first predetermined current is described the first electric current;
At described the second comparative result, show the first normalized current hour described in described the first current ratio to be compared, described the first current comparator is exported the second predetermined current, and now, described the second predetermined current is described the first electric current.
Please refer to Fig. 4, will introduce for example the operation principle of output current control circuit 102 below.
In actual applications, current comparator has both positive and negative polarity, as the first current comparator 1025 has second anodal and the second negative pole, there is a current amplifier to be connected with the second positive pole of the first current comparator 1025, be used for inputting an electric current to be compared to the first current comparator 1025, the second negative pole of the first current comparator 1025 is connected with the second reference power supply in output current control circuit, for inputting a normalized current to the first current comparator 1025; Wherein, the operation principle of current comparator and the operation principle of voltage comparator are similar, if the current ratio normalized current of input is large, now current comparator is exported the larger electric current of a predetermined current value; If the current ratio normalized current of input is little, now current comparator is exported the less electric current of a predetermined current value, suppose that now the input current of first current comparator the second positive pole is 5A, the normalized current of the second negative pole input is 4A, the electric current of the current ratio second negative pole input of now the second anodal input is large, now the first current comparator is exported the larger electric current of predetermined current value, as 3A; If the electric current of the current ratio of the second anodal input the second negative pole input is little, now the first current comparator is exported the less electric current of predetermined current value, as 1A, the electric current that the first current comparator 1025 outputs obtain more afterwards can produce according to different electric currents different instructions to the first control module 1026, the first control modules 1026.
Wherein, in actual applications, the first control module is specifically as follows an intelligent IC, and intelligent IC can produce according to different electric currents different instructions, as in above-mentioned example when the first current comparator is input to electric current in intelligent IC and is 3A, the instruction that at this moment intelligent IC produces is the first instruction; When the electric current that is input to intelligent IC when the first current comparator is 1A, at this moment the instruction that intelligent IC produces is the second instruction, and then different instructions can have different effects, if the first instruction is that switch is closed, the second instruction is that switch is disconnected etc., the application does not do concrete restriction, because intelligent IC can produce according to different electric currents different control, thereby realize power ratio control output circuit, exports different power.
After step S20, the method for the embodiment of the present application just enters step S30, based on described the first input voltage, exports described the first power output that is:.
Wherein, in the embodiment of the present application, described based on described the first input voltage, export described the first power output, be specially:
Based on described the first input voltage, by the described power output circuit being connected with described output current control circuit in described power conversion device, export described the first power output.
Wherein, please refer to Fig. 5, described power output circuit 103 specifically comprises:
The 6th resistance 1031, comprises the tenth five terminal and the 16 end, and described the tenth five terminal is connected with the input circuit of described power conversion device, and described the 16 end is connected from the 3rd interface different with described first and second interface of described power conversion device;
The 7th resistance 1032, comprises the 17 end and the 18 end, and described the 17 end is connected with described the 3rd interface, and described the 18 end is connected with the output circuit of described power conversion device;
Second switch 1033, is connected with described the 14 end, and described second switch comprises the 19 end and the 20 end, and described the 19 end is connected with described the tenth five terminal, and described 20 ends are connected with described the 3rd interface.
Wherein, in the embodiment of the present application, described based on described the first input voltage, by the power output circuit being connected with described output current control circuit in described power conversion device, export described the first power output, specifically comprise:
Based on described the first input voltage, described the first control module produces the first control command;
By carrying out described the first control command, control described second switch in on-state or off-state;
When described second switch in described on-state constantly, described the 7th resistance produces the second electric current;
Based on described the second electric current, described power output circuit is exported described the first power output;
When described second switch is during in described off-state, described the 7th resistance produces the 3rd electric current;
Based on described the 3rd electric current, described power output circuit is exported described the first power output.
Please refer to Fig. 5, will introduce for example the operation principle of power output circuit 103 below.
In actual applications, the output voltage of supposing power output circuit is 20V, the 6th resistance 1031 is 4 Europe, the 7th resistance 1032 is 6 Europe, second switch 1033 is connected with the first control module 1026, suppose that the first control module 1026 is an intelligent IC, intelligent IC can produce according to different electric currents different instructions, as control the connecting and disconnecting of second switch 1033, when second switch 1033 is connected, the 6th resistance 1031 is by short circuit, and at this moment the resistance in power output circuit is 6 Europe, now the output current of power output circuit is 3.33A, and power output is 66W; When second switch 1033 disconnects, the 6th resistance 1031 and the 7th resistance 1032 access power output circuits, now the resistance in power output circuit is 10 Europe, and now the output current of power output circuit is 2A, and power output is 40W.So just realized and exported different power outputs, in the time of just can utilizing method in this programme to charge aboard, the power output of power supply adaptor is converted to 40W, meet instructions for use aboard, while charging, the power output of power supply adaptor is converted to 66W on automobile, meets the instructions for use on automobile.Wherein, in actual applications, the implementation of power output circuit has multiple, and the way of output that changes power also can have multiple, if can realize change output current realization control power output just can, the application does not do concrete restriction.
Technical scheme in above-mentioned the embodiment of the present application, at least has following technique effect or advantage:
Owing to having adopted first, detect be input to described power conversion device change input voltage into the first input voltage, then, the corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage, finally, based on described the first input voltage, export the technological means of described the first power output, , first detect the size of input voltage, then according to the size of input voltage, determine corresponding power output size, the size of finally controlling output current realizes corresponding power output, power supply adaptor can carry out power transfer according to different power supplys and charge, so, efficiently solve power supply adaptor existence in prior art and can only support the technical problem that a kind of power supply of exporting certain power charges, and then realized power supply adaptor and can support the technique effect that the power supply of multiple different output power charges.
Further, owing to having adopted first, detect be input to described power conversion device change input voltage into the first input voltage, then, the corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage, finally, based on described the first input voltage, export the technological means of described the first power output, , first detect the size of input voltage, then according to the size of input voltage, determine corresponding power output size, the size of finally controlling output current realizes corresponding power output, therefore, utilize the technical scheme that the application provides that different power outputs can be provided, so, efficiently solving power supply adaptor in prior art exists power output single, the technical problem that versatility is lower, and then realized power supply adaptor and can export multiple power output, the technique effect that versatility is higher.
A kind of method for power conversion in corresponding embodiment mono-, embodiment mono-also provides a kind of power conversion device, please refer to Fig. 2-5, and the device 10 in the embodiment of the present application comprises:
Voltage detecting circuit 101, changes input voltage into the first input voltage for detection of what be input to described power conversion device;
Output current control circuit 102, is connected with described voltage detecting circuit 101, for the corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage;
Power output circuit 103, is connected with described output current control circuit 102, for based on described the first input voltage, exports described the first power output.
Wherein, in the embodiment of the present application, described voltage detecting circuit 101 specifically comprises:
The first resistance 1011, comprises first end and the second end, and wherein, described first end is connected with the input circuit of described power conversion device, and described the second end is connected with the first interface of described power conversion device;
The second resistance 1012, comprises the 3rd end and the 4th end, wherein, described the 3rd end ground connection, described the 4th end is connected with described first interface;
Voltage comparator 1013, comprises first anodal and the first negative pole, and described the first positive pole is connected with described first interface, and described the first negative pole is connected with the first reference power supply.
Wherein, in the embodiment of the present application, described output current control circuit 102 specifically comprises:
The 3rd resistance 1021, comprises five terminal and the 6th end, and described five terminal is connected from second interface different with described first interface of described power conversion device;
The 4th resistance 1022, comprises the 7th end and the 8th end, and described the 7th end is connected with described the second interface, described the 8th end ground connection;
The 5th resistance 1023, comprises the 9th end and the tenth end, and described the 9th end is connected with the second reference power supply, and described the tenth end is connected with described the second interface;
The first switch 1024, comprises the tenth one end and the 12 end, described the tenth one end and described six end connecting, described the 12 end ground connection;
The first current comparator 1025, comprises second anodal and the second negative pole, and described the second positive pole is connected with the first current discharge device of described power conversion device, and described the second negative pole is connected with described the second interface;
The first control module 1026, comprises the 13 end and the 14 end, and described the 13 end is connected with described the first current comparator, and described the 14 end is connected with the power output circuit 103 in described power conversion device.
Wherein, in the embodiment of the present application, described power output circuit 103 specifically comprises:
The 6th resistance 1031, comprises the tenth five terminal and the 16 end, and described the tenth five terminal is connected with the input circuit of described power conversion device, and described the 16 end is connected from the 3rd interface different with described first and second interface of described power conversion device;
The 7th resistance 1032, comprises the 17 end and the 18 end, and described the 17 end is connected with described the 3rd interface, and described the 18 end is connected with the output circuit of described power conversion device;
Second switch 1033, is connected with described the 14 end, and described second switch comprises the 19 end and the 20 end, and described the 19 end is connected with described the tenth five terminal, and described 20 ends are connected with described the 3rd interface.
Technical scheme in above-mentioned the embodiment of the present application, at least has following technique effect or advantage:
Owing to having adopted first, detect be input to described power conversion device change input voltage into the first input voltage, then, the corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage, finally, based on described the first input voltage, export the technological means of described the first power output, , first detect the size of input voltage, then according to the size of input voltage, determine corresponding power output size, the size of finally controlling output current realizes corresponding power output, power supply adaptor can carry out power transfer according to different power supplys and charge, so, efficiently solve power supply adaptor existence in prior art and can only support the technical problem that a kind of power supply of exporting certain power charges, and then realized power supply adaptor and can support the technique effect that the power supply of multiple different output power charges.
Further, owing to having adopted first, detect be input to described power conversion device change input voltage into the first input voltage, then, the corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage, finally, based on described the first input voltage, export the technological means of described the first power output, , first detect the size of input voltage, then according to the size of input voltage, determine corresponding power output size, the size of finally controlling output current realizes corresponding power output, therefore, utilize the technical scheme that the application provides that different power outputs can be provided, so, efficiently solving power supply adaptor in prior art exists power output single, the technical problem that versatility is lower, and then realized power supply adaptor and can export multiple power output, the technique effect that versatility is higher.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (15)
1. a method for power conversion, is applied to, in a power conversion device, it is characterized in that, described method comprises:
What detection was input to described power conversion device changes input voltage into the first input voltage;
Corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage;
Based on described the first input voltage, export described the first power output.
2. the method for claim 1, is characterized in that, what described detection was input to described power conversion device changes input voltage into the first input voltage, is specially:
Voltage detecting circuit by described power conversion device detect be input to described power conversion device change input voltage into the first input voltage.
3. method as claimed in claim 2, is characterized in that, described voltage detecting circuit specifically comprises:
The first resistance, comprises first end and the second end, and wherein, described first end is connected with the input circuit of described power conversion device, and described the second end is connected with the first interface of described power conversion device;
The second resistance, comprises the 3rd end and the 4th end, wherein, described the 3rd end ground connection, described the 4th end is connected with described first interface;
Voltage comparator, comprises first anodal and the first negative pole, and described the first positive pole is connected with described first interface, and described the first negative pole is connected with the first reference power supply.
4. method as claimed in claim 3, is characterized in that, the described voltage detecting circuit by described power conversion device detect be input to described power conversion device change input voltage into the first input voltage, specifically comprise:
Described the first positive pole obtains the first voltage to be compared from the first power power supply to be converted, and described the first negative pole obtains the first normal voltage from described the first reference power supply;
Described the first voltage to be compared and described the first normal voltage are compared, obtain the first comparative result;
In the first normal voltage described in described the first comparative result shows described the first voltage ratio to be compared when large, the default high level of described voltage comparator output first, now, the described first default high level is described the first input voltage;
At described the first comparative result, show the first normal voltage hour described in described the first voltage ratio to be compared, the default low level of described voltage comparator output first, now, the described first default low level is described the first input voltage.
5. the method as described in arbitrary claim in claim 1-4, it is characterized in that, the described corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage, is specially:
Corresponding relation based between input voltage and power output, by connecting output current control circuit with described voltage detecting circuit and determine that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage in described power conversion device.
6. method as claimed in claim 5, is characterized in that, described output current control circuit specifically comprises:
The 3rd resistance, comprises five terminal and the 6th end, and described five terminal is connected from second interface different with described first interface of described power conversion device;
The 4th resistance, comprises the 7th end and the 8th end, and described the 7th end is connected with described the second interface, described the 8th end ground connection;
The 5th resistance, comprises the 9th end and the tenth end, and described the 9th end is connected with the second reference power supply, and described the tenth end is connected with described the second interface;
The first switch, comprises the tenth one end and the 12 end, described the tenth one end and described six end connecting, described the 12 end ground connection;
The first current comparator, comprises second anodal and the second negative pole, and described the second positive pole is connected with the first current discharge device of described power conversion device, and described the second negative pole is connected with described the second interface;
The first control module, comprises the 13 end and the 14 end, and described the 13 end is connected with described the first current comparator, and described the 14 end is connected with the power output circuit in described power conversion device.
7. method as claimed in claim 6, it is characterized in that, the described corresponding relation based between input voltage and power output, by connecting output current control circuit with described voltage detecting circuit and determine that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage in described power conversion device, specifically comprise:
Described the second negative pole obtains the first normalized current from described the first reference power supply, and described the second positive pole obtains the first electric current to be compared from described the first current amplifier;
More described the first normalized current and described the first electric current to be compared, obtain the second comparative result;
Based on described the second comparative result, described the first current comparator is exported the first electric current to described the first control module;
Based on described the first electric current, described the first control module produces the first control command;
Carry out described the first control command, take and determine that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage.
8. method as claimed in claim 7, is characterized in that, described based on described the second comparative result, and described the first current comparator is exported the first electric current to described the first control module, specifically comprises:
Described in described the second comparative result shows described the first current ratio to be compared, the first normalized current is when large, described the first current comparator is exported the first predetermined current, and now, described the first predetermined current is described the first electric current;
At described the second comparative result, show the first normalized current hour described in described the first current ratio to be compared, described the first current comparator is exported the second predetermined current, and now, described the second predetermined current is described the first electric current.
9. method as claimed in claim 8, is characterized in that, described based on described the first input voltage, exports described the first power output, is specially:
Based on described the first input voltage, by the described power output circuit being connected with described output current control circuit in described power conversion device, export described the first power output.
10. method as claimed in claim 9, is characterized in that, described power output circuit specifically comprises:
The 6th resistance, comprises the tenth five terminal and the 16 end, and described the tenth five terminal is connected with the input circuit of described power conversion device, and described the 16 end is connected from the 3rd interface different with described first and second interface of described power conversion device;
The 7th resistance, comprises the 17 end and the 18 end, and described the 17 end is connected with described the 3rd interface, and described the 18 end is connected with the output circuit of described power conversion device;
Second switch, is connected with described the 14 end, and described second switch comprises the 19 end and the 20 end, and described the 19 end is connected with described the tenth five terminal, and described 20 ends are connected with described the 3rd interface.
11. methods as claimed in claim 10, is characterized in that, described based on described the first input voltage, by the power output circuit being connected with described output current control circuit in described power conversion device, export described the first power output, specifically comprise:
Based on described the first input voltage, described the first control module produces the first control command;
By carrying out described the first control command, control described second switch in on-state or off-state;
When described second switch in described on-state constantly, described the 7th resistance produces the second electric current;
Based on described the second electric current, described power output circuit is exported described the first power output;
When described second switch is during in described off-state, described the 7th resistance produces the 3rd electric current;
Based on described the 3rd electric current, described power output circuit is exported described the first power output.
12. 1 kinds of power conversion devices, is characterized in that, comprising:
Voltage detecting circuit, changes input voltage into the first input voltage for detection of what be input to described power conversion device;
Output current control circuit, is connected with described voltage detecting circuit, for the corresponding relation based between input voltage and power output, determines that the conversion power output of described power conversion device is first power output corresponding with described the first input voltage;
Power output circuit, is connected with described output current control circuit, for based on described the first input voltage, exports described the first power output.
13. devices as claimed in claim 12, is characterized in that, described voltage detecting circuit specifically comprises:
The first resistance, comprises first end and the second end, and wherein, described first end is connected with the input circuit of described power conversion device, and described the second end is connected with the first interface of described power conversion device;
The second resistance, comprises the 3rd end and the 4th end, wherein, described the 3rd end ground connection, described the 4th end is connected with described first interface;
Voltage comparator, comprises first anodal and the first negative pole, and described the first positive pole is connected with described first interface, and described the first negative pole is connected with the first reference power supply.
14. devices as claimed in claim 13, is characterized in that, described output current control circuit specifically comprises:
The 3rd resistance, comprises five terminal and the 6th end, and described five terminal is connected from second interface different with described first interface of described power conversion device;
The 4th resistance, comprises the 7th end and the 8th end, and described the 7th end is connected with described the second interface, described the 8th end ground connection;
The 5th resistance, comprises the 9th end and the tenth end, and described the 9th end is connected with the second reference power supply, and described the tenth end is connected with described the second interface;
The first switch, comprises the tenth one end and the 12 end, described the tenth one end and described six end connecting, described the 12 end ground connection;
The first current comparator, comprises second anodal and the second negative pole, and described the second positive pole is connected with the first current discharge device of described power conversion device, and described the second negative pole is connected with described the second interface;
The first control module, comprises the 13 end and the 14 end, and described the 13 end is connected with described the first current comparator, and described the 14 end is connected with the power output circuit in described power conversion device.
15. devices as claimed in claim 14, is characterized in that, described power output circuit specifically comprises:
The 6th resistance, comprises the tenth five terminal and the 16 end, and described the tenth five terminal is connected with the input circuit of described power conversion device, and described the 16 end is connected from the 3rd interface different with described first and second interface of described power conversion device;
The 7th resistance, comprises the 17 end and the 18 end, and described the 17 end is connected with described the 3rd interface, and described the 18 end is connected with the output circuit of described power conversion device;
Second switch, is connected with described the 14 end, and described second switch comprises the 19 end and the 20 end, and described the 19 end is connected with described the tenth five terminal, and described 20 ends are connected with described the 3rd interface.
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| CN108631586A (en) * | 2018-05-29 | 2018-10-09 | 合肥为民电源有限公司 | A kind of control method and device of generated output power |
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| CN1249877C (en) * | 2001-12-13 | 2006-04-05 | 广达电脑股份有限公司 | Charging device capable of dynamically adjusting charge power |
| JP4668836B2 (en) * | 2006-05-09 | 2011-04-13 | ローム株式会社 | CHARGE CONTROL CIRCUIT AND CHARGE CIRCUIT AND ELECTRONIC DEVICE USING THE SAME |
| CN101378199B (en) * | 2007-08-31 | 2012-09-05 | 鹏智科技(深圳)有限公司 | Charging circuit for battery |
| CN101728862B (en) * | 2008-10-31 | 2014-04-16 | 深圳迈瑞生物医疗电子股份有限公司 | Charging circuit and charging current transformation method |
| CN101752883B (en) * | 2008-12-04 | 2013-10-23 | 深圳迈瑞生物医疗电子股份有限公司 | Charging circuit, medical facility and charging method |
| CN101552541B (en) * | 2008-12-08 | 2011-03-16 | 厦门大学 | Universal power adapter |
| CN102324580B (en) * | 2011-05-20 | 2013-11-27 | 惠州Tcl移动通信有限公司 | Mobile phone as well as charging circuit and method of cell thereof |
| CN102280670B (en) * | 2011-07-06 | 2014-07-09 | 惠州Tcl移动通信有限公司 | Charging method for realizing automatic power control |
| CN103001290A (en) * | 2012-11-28 | 2013-03-27 | 惠州Tcl移动通信有限公司 | Self-adaption charging circuit and corresponding mobile terminal |
| CN102946131B (en) * | 2012-11-30 | 2014-11-26 | 矽力杰半导体技术(杭州)有限公司 | Adaptive input power charger and method for controlling input current of charger |
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| CN108631586A (en) * | 2018-05-29 | 2018-10-09 | 合肥为民电源有限公司 | A kind of control method and device of generated output power |
| CN108631586B (en) * | 2018-05-29 | 2019-09-13 | 合肥为民电源有限公司 | A kind of control method and device of generated output power |
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