CN105826955A - Mobile power supply device applicable to measuring impedance of charging line - Google Patents
Mobile power supply device applicable to measuring impedance of charging line Download PDFInfo
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- CN105826955A CN105826955A CN201510004772.7A CN201510004772A CN105826955A CN 105826955 A CN105826955 A CN 105826955A CN 201510004772 A CN201510004772 A CN 201510004772A CN 105826955 A CN105826955 A CN 105826955A
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Abstract
The invention provides a mobile power supply device applicable to measuring the impedance of a charging line. The mobile power supply device comprises an input port, a first detection circuit and a processing circuit, wherein the input port is used for receiving input power supply signals from an external power supply through the charging line so as to act as test signals; the first detection circuit receives the test signals; the first detection circuit detects voltage of the test signals at the state that the external power supply is no-load so as to act as a no-load voltage value; the first detection circuit detects voltage and current of the test signals at the state that the external power supply is on-load so as to act as a load voltage value and a load current value; the processing circuit is coupled to the first detection circuit; and the processing circuit receives the on-load voltage value, the load voltage value and the load current value so as to calculate the impedance of the charging line.
Description
Technical field
The invention relates to a kind of supply unit, and in particular to a kind of portable power source device being applicable to measure charging wire impedance.
Background technology
Along with the fast development of mobile device, general mobile device generally can support high-res screen, take pictures, the function such as ornamental film or wireless Internet access.But these functions of mobile device the most quickly consume the electricity of the battery in mobile device.Therefore, user often needs additionally to use a portable power source to be charged mobile device, thus prevents mobile device from exhausting electricity.
In general, portable power source is couple to another power supply (such as civil power) or electronic installation (such as PC etc.) to be charged by charging wire (or transmission line) mostly.And mobile device is also to be couple to portable power source to be charged by charging wire (or transmission line).But, charging wire (or transmission line) itself has impedance.When by the electric current of charging wire (or transmission line) bigger time, the impedance on the circuit of charging wire own and joint thereof will produce obvious pressure drop.Consequently, it is possible to the voltage exported by charging wire will be declined, and then affect the charging of device (such as portable power source or mobile device).If the pressure drop degree that charging wire is caused is excessive, device even can be made to stop charging.It follows that one of impedance magnitude key factor actually affecting device charge efficiency of charging wire (or transmission line) itself.
But, the charging wire sold the most on the market the most only can provide the length of charging wire, can't provide the detailed specification about charging wire (lead material that the impedance of such as charging wire, the line footpath of charging wire or charging wire are used etc.).The influence degree learning charging wire to device charge efficiency consequently, it is possible to user is had no way of at all, more cannot compare and select a relatively Low ESR person to improve the charge efficiency of device in numerous charging wires.
Summary of the invention
In view of this, the present invention provides a kind of portable power source device being applicable to measure charging wire impedance.User can learn the charging wire influence degree to device charge efficiency according to the impedance of charging wire or line footpath.User also may compare impedance or the line footpath of a plurality of charging wire, and select one wherein depending on actual design or application demand and use.
The portable power source device being applicable to measure charging wire impedance of the present invention includes that at least one input port, at least one first testing circuit and one process circuit；This at least one input port is in order to receive at least one input power signal using as at least one test signal by least one charging wire from least one external power source；This at least one first testing circuit is couple to above-mentioned at least one input port to receive above-mentioned at least one test signal；When this, at least one external power source is unloaded, this at least one first testing circuit detects the voltage of this at least one test signal using as at least one floating voltage value；When this at least one external power source is for there being load, this at least one first testing circuit detects the voltage of this at least one test signal with electric current using as at least one load voltage values and at least one load current value；Process circuit and be couple to this at least one first testing circuit；Process circuit and receive this at least one floating voltage value, this at least one load voltage values with this at least one load current value to calculate the impedance of this at least one charging wire.
In one embodiment of this invention, the above-mentioned portable power source device being applicable to measure charging wire impedance also includes charging control unit and battery.Charging control unit is couple to this at least one input port to receive this at least one test signal.Charging control unit is controlled by process circuit and changes with to this at least one test signal, thus produces a charging signals.Battery is couple to charging control unit, and receives charging signals to be charged.
In one embodiment of this invention, above-mentioned be applicable to the portable power source device measuring charging wire impedance, wherein battery is in order to the load as at least one external power source.Wherein process circuit forbidden energy charging control unit to stop at least one test signal being changed, so that at least one external power source is unloaded state.Wherein process circuit and enable charging control unit to start to change, at least one test signal so that at least one external power source is the state having load.
In one embodiment of this invention, the above-mentioned portable power source device being applicable to measure charging wire impedance also includes at least one input and output port.At least one input and output port is couple to process circuit.Process circuit by least one input and output port to communicate with at least one external mobile devices.
In one embodiment of this invention, above-mentioned be applicable to the portable power source device measuring charging wire impedance, wherein process circuit and include at least one look-up table.Process circuit by least one input and output port to receive the length information of at least one charging wire from least one external mobile devices.Process circuit and at least one look-up table, find out the line footpath of at least one charging wire according to impedance and the length information of at least one charging wire.Process the circuit line footpath by least one input and output port output at least one charging wire at least one external mobile devices.
In one embodiment of this invention, above-mentioned be applicable to the portable power source device measuring charging wire impedance, at least a part of which one external mobile devices includes mobile applications (APP).The length information of at least one charging wire is supplied to the process circuit of portable power source device by mobile applications.Mobile applications is in order to show the line footpath of at least one charging wire.
In one embodiment of this invention, above-mentioned be applicable to the portable power source device measuring charging wire impedance, at least a part of which one look-up table includes multiple unit length resistance value and multiple reference line footpaths value.Wherein each in these unit length resistance values corresponds to one of them of these reference line footpath values.
In one embodiment of this invention, above-mentioned be applicable to the portable power source device measuring charging wire impedance, at least a part of which one look-up table corresponds at least one lead material.
In one embodiment of this invention, above-mentioned be applicable to the portable power source device measuring charging wire impedance, process circuit and export the impedance of at least one charging wire at least one external mobile devices by least one input and output port.The mobile applications of at least a part of which one external mobile devices finds out the line footpath of at least one charging wire according to impedance and the length information of at least one charging wire in the look-up table of mobile applications, and in order to show the line footpath of at least one charging wire.
In one embodiment of this invention, the above-mentioned portable power source device being applicable to measure charging wire impedance also includes control of discharge unit.Control of discharge unit is coupled between battery and at least one input and output port.Control of discharge unit is controlled by process circuit to be changed with the voltage to battery, thus produces at least one discharge signal.At least a part of which one input and output port receives at least one discharge signal using as at least one out-put supply signal, and provides at least one out-put supply signal at least one external mobile devices.
Based on above-mentioned, the portable power source device of the present invention can be used to measure the impedance of charging wire.Consequently, it is possible to user can learn this charging wire influence degree to device charge efficiency according to the line footpath of charging wire or impedance.User judges to be that this charging wire is the most abnormal and foundation as renewal charging wire also dependent on the line footpath of charging wire or impedance.User also may compare impedance or the line footpath of a plurality of charging wire, and select one wherein depending on actual design or application demand and use.
For the features described above of the present invention and advantage can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Accompanying drawing explanation
Figure below is a part for the description of the present invention, it is shown that the example embodiment of the present invention, and accompanying drawing illustrates the principle of the present invention together with the description of description.
Fig. 1 is the structural representation measuring the portable power source device of charging wire impedance according to being applicable to shown by one embodiment of the invention；
Fig. 2 is a measurement mode schematic diagram of the portable power source device measurement charging wire impedance of Fig. 1；
Fig. 3 is another measurement mode schematic diagram of the portable power source device measurement charging wire impedance of Fig. 1.
Description of reference numerals:
1000: portable power source device；
1100: battery；
1201～120n: input port；
1300: charging control unit；
1500: control of discharge unit；
1601～160m: input and output port；
1700: process circuit；
1710,4110: look-up table；
1801～180n: the first testing circuit；
2000: external power source；
3000: charging wire；
4000: external mobile devices；
4100: mobile applications；
I21～I2n: load current value；
Ic: charging signals；
Id1～Idm: discharge signal；
PI_1～PI_n: input power signal；
PO_1～PO_m: out-put supply signal；
Sc_1～Sc_n: test signal；
V11～V1n: floating voltage value；
V21～V2n: load voltage values；
Vb: voltage.
Detailed description of the invention
With detailed reference to the one exemplary embodiment of the present invention, the example of described one exemplary embodiment is described in the accompanying drawings.It addition, in place of all possibilities, use the element/component of identical label to represent same or like part in drawings and the embodiments.
Below referring to Fig. 1 and Fig. 2.Fig. 1 is the structural representation measuring the portable power source device of charging wire impedance according to being applicable to shown by one embodiment of the invention.Fig. 2 is a measurement mode schematic diagram of the portable power source device measurement charging wire impedance of Fig. 1.Reading for convenience, the portable power source device 1000 shown in Fig. 2 illustrate only an input port 1201.As it is shown in figure 1, portable power source device 1000 can include battery 1100, an at least input port 1201～120n, charging control unit 1300, control of discharge unit 1500, at least input and output port 1601～160m, process circuit 1700 and at least one first testing circuit 1801～180n.
Input port 1201～120n is in order to receive at least one input power signal PI_1～PI_n (such as input power signal PI_1) to test signal Sc_1～Sc_n (such as test signal Sc_1) as at least one by least one charging wire (such as charging wire 3000) from least one external power source (such as external power source 2000).
In one embodiment of this invention, input port 1201～120n can be USB (universal serial bus) (USB) input port, and charging wire can be USB charging wire/transmission line.But the present invention is not limited thereto.In the above embodiment of the present invention, input port 1201～120n can be various types of USB input ports, such as micro universal serial bus (micro-USB) input port or mini USB (universal serial bus) (mini-USB) input port etc..And charging wire can be various types of USB charging wire/transmission line, such as micro-USB charging wire/transmission line or mini-USB charging wire/transmission line etc..
First testing circuit 1801～180n is couple to input port 1201～120n to receive test signal Sc_1～Sc_n.When external power source (such as external power source 2000) is unloaded, the voltage of the first testing circuit 1801～180n (the such as first testing circuit 1801) detection test signal Sc_1～Sc_n (such as test signal Sc_1) is using as floating voltage value V11～V1n (such as floating voltage value V11).When external power source (such as external power source 2000) is for there being load, the voltage of the first testing circuit 1801～180n (the such as first testing circuit 1801) detection test signal Sc_1～Sc_n (such as test signal Sc_1) and electric current are using as load voltage values V21～V2n (such as load voltage values V21) and load current value I21～I2n (such as load current value I21).
In one embodiment of this invention, each first testing circuit (the such as first testing circuit 1801) can include a voltage detecting circuit (not shown) and a current measurement circuit (not shown), but the present invention is not limited thereto.Voltage detecting circuit in each first testing circuit (the such as first testing circuit 1801) can detect the voltage of test signal (such as test signal Sc_1) using as floating voltage value (such as floating voltage value V11) or load voltage values (such as load voltage values V21).Current measurement circuit in each first testing circuit (the such as first testing circuit 1801) can detect the electric current of test signal (such as test signal Sc_1) using as load current value (such as load current value I21).
Process circuit 1700 and be couple to the first testing circuit 1801～180n.Process circuit 1700 and receive floating voltage value V11～V1n, load voltage values V21～V2n with load current value I21～I2n to calculate the impedance of charging wire 3000.
Charging control unit 1300 is couple to input port 1201～120n to receive test signal Sc_1～Sc_n.Charging control unit 1300 is controlled by process circuit 1700 to change test signal Sc_1～Sc_n, thus produces charging signals Ic.Charging control unit 1300 is couple to battery 1100.Battery 1100 is charged by charging control unit 1300 with charging signals Ic.In one embodiment of this invention, charging control unit 1300 can include multiple DC voltage booster circuit (not shown) and a voltage-to-current conversion circuit (not shown).But the present invention is not limited thereto.Multiple DC voltage booster circuits in charging control unit 1300 can carry out boosting to test signal Sc_1～Sc_n respectively and process to produce the first boost signal.Voltage-to-current conversion circuit in charging control unit 1300 can carry out voltage to the first boost signal to be changed to electric current to produce charging signals Ic.Voltage-to-current conversion circuit in charging control unit 1300 exports charging signals Ic to battery 1100 to be charged battery 1100.
Battery 1100 can represent single battery (or cell device) or a battery combination or the module comprising one or more battery (or cell device).In addition, battery 1100 can be the rechargeable battery of nickel-zinc cell, Ni-MH battery or lithium battery etc, but is not limited to this.
Control of discharge unit 1500 is couple to battery 1100.Control of discharge unit 1500 is controlled by process circuit 1700 to be changed with the voltage Vb to battery 1100, thus produces at least one discharge signal Id1～Idm.In one embodiment of this invention, control of discharge unit 1500 can include a DC voltage booster circuit (not shown) and a voltage-to-current conversion circuit (not shown).But the present invention is not limited thereto.DC voltage booster circuit in control of discharge unit 1500 can carry out boosting and process to produce the second boost signal the voltage Vb of this battery 1100.Voltage-to-current conversion circuit in control of discharge unit 1500 can carry out voltage to the second boost signal to be changed to electric current to produce at least one discharge signal Id1～Idm.
Input and output port 1601～160m is couple to process circuit 1700 and control of discharge unit 1500.Wherein process circuit 1700 to be communicated with at least one external mobile devices by input and output port 1601～160m.In addition, input and output port 1601～160m can receive discharge signal Id1～Idm using as out-put supply signal PO_1～PO_m.Input and output port 1601～160m can provide out-put supply signal PO_1～PO_m at least one external mobile devices to be powered at least one external mobile devices.In one embodiment of this invention, input and output port 1601～160m can be USB port.But the present invention is not limited thereto.In the above embodiment of the present invention, input and output port 1601～160m can be various types of USB ports.
In the above embodiment of the present invention, processing circuit 1700 can be with microprocessor (microprocessor) or digital signal processor (digitalsignalprocessor, it is called for short DSP) or special IC (ApplicationSpecificIntegratedCircuits, be called for short ASIC) or field programmable gate array (Field-ProgrammableGateArray, be called for short FPGA) realize.And charging control unit 1300, control of discharge unit 1500 and the first testing circuit 1801～180n can pass through special IC (ASIC) or programmable gate array (FPGA) realizes.Wherein processing circuit 1700, charging control unit 1300, control of discharge unit 1500 and the first testing circuit 1801～180n can be to be completed by individual circuit chip, partly or entirely can also be reached by single IC for both chip, but the present invention is not limited.
Running below for portable power source device 1000 is described in detail.For convenience of explanation, the impedance measuring a charging wire with portable power source device 1000 is illustrated by following example for example.And the embodiment of the impedance that portable power source device 1000 measures a plurality of charging wire can be analogized according to the description below and obtained simultaneously.
The most again referring concurrently to Fig. 1 and Fig. 2.As in figure 2 it is shown, external power source 2000 is couple to the input port 1201 of portable power source device 1000 by charging wire 3000.Input port 1201 can receive input power signal PI_1 using as testing signal Sc_1 by charging wire 3000 from external power source 2000.Portable power source device 1000 can detect voltage and the electric current of test signal Sc_1 under the different loads state of external power source 2000, and obtain impedance or the line footpath of charging wire 3000 according to testing result.In the present embodiment, external power source 2000 can be civil power or the electronic installation that can provide power supply, charging wire 3000 can be various types of USB charging wire or transmission line, and input port 1201 can be compatible with the input port of charging wire 3000 specification, but the present invention is not limited thereto.
For example, in this example, it is assumed that the power supply signal of the exportable voltage of external power source 2,000 5 volts and 2 amperes of electric current (namely output is 10 watts).When portable power source device 1000 not yet starts to be charged by external power source 2000, charging wire 3000 not having electric current and flows through, now external power source 2000 is the state of zero load.Therefore, the voltage at the two ends of charging wire 3000 is all 5 volts.In other words, the voltage of the test signal Sc_1 that the first testing circuit 1801 is received is substantially equal to the output voltage 5 volts of external power source 2000.Now, the first testing circuit 1801 can detect test signal Sc_1 voltage be 5 volts using as floating voltage value V11.It is to say, floating voltage value V11 is the output voltage values of external power source 2000.
On the other hand, when portable power source device 1000 starts to be charged by external power source 2000, charging wire 3000 will have electric current flow to portable power source device 1000 from external power source 2000, now external power source 2000 is the state having load.But, owing to charging wire 3000 itself has impedance, therefore when electric current flows to portable power source device 1000 from external power source 2000, the two ends of charging wire 3000 will produce pressure drop.Although the exportable voltage of external power source 2,000 5 volts, but the power consumption caused due to the impedance of charging wire 3000 so that the voltage received by input port 1201 of portable power source device 1000 will be less than 5 volts.In other words, the voltage of the test signal Sc_1 that the first testing circuit 1801 of portable power source device 1000 is received will be less than 5 volts.Now, the first testing circuit 1801 can detect voltage and the electric current of test signal Sc_1 using as load voltage values V21 and load current value I21.
In the above example, it is assumed that the load voltage values V21 detected by the first testing circuit 1801 is 4.8 volts, and load current value I21 is 2 amperes.Therefore the both end voltage difference of charging wire 3000 is 0.2 volt (namely floating voltage value V11 deducts load voltage values V21), the electric current flowing through charging wire 3000 is then 2 amperes (namely load current value I21).Therefore, process circuit 1700 and can calculate the impedance (being 0.1 ohm) of charging wire 3000 according to floating voltage value V11 (being 5 volts), load voltage values V21 (being 4.8 volts) and load current value I21 (being 2 amperes).That is, process circuit 1700 can obtain the impedance of charging wire 3000 according to formula (1).Wherein the R in formula (1) is the impedance of charging wire 3000.
R=(V11-V21) ÷ I21 (1)
As described above, charging control unit 1300 can be controlled by process circuit 1700 to change test signal Sc_1, thus produces charging signals Ic, and battery 1100 can receive charging signals Ic to be charged.Therefore, in one embodiment of this invention, battery 1100 may be used as the load of external power source 2000.But the present invention is not limited thereto.
In detail, processing circuit 1700 can forbidden energy (disable) charging control unit 1300 change test signal Sc_1 with stopping, thus stops to charge battery 1100.The state that so external power source 2000 will be made to become zero load.Stated differently, since charging control unit 1300 is disabled so that the charge path between external power source 2000 to battery 1100 is disconnected.Therefore external power source 2000 will become Light Condition, and electric current now will not had to flow through charging wire 3000.
On the other hand, process circuit 1700 and can enable (enable) charging control unit 1300 to start test signal Sc_1 is changed, thus start battery 1100 is charged.So there is the state of load by making external power source 2000 become.In other words, owing to charging control unit 1300 is enabled, make external power source 2000, charging wire 3000, input port 1201, charging control unit 1300 and battery 1100 can form a charge path, therefore battery 1100 can be charged and become and have load state by external power source 2000, and electric current now will be had to flow through charging wire 3000.
In another embodiment of the invention, external mobile devices also can be used as the load of external power source.Below referring to Fig. 1 and Fig. 3, Fig. 3 is another measurement mode schematic diagram of the portable power source device measurement charging wire impedance of Fig. 1.Compared to the measurement mode shown in Fig. 2, the measurement mode of Fig. 3 is that external mobile devices 4000 is couple to input and output port 1601 using the load as external power source 2000.Change with the voltage Vb to battery 1100 consequently, it is possible to control of discharge unit 1500 can be controlled by process circuit 1700, thus produce discharge signal Id1.Input and output port 1601 can receive discharge signal Id1 using as out-put supply signal PO_1, and provides out-put supply signal PO_1 to external mobile devices 4000 to charge external mobile devices 4000.Battery 1100 can be avoided thus because filling full, and make portable power source device 1000 interrupt the measurement of the impedance to charging wire 3000.Above-mentioned external mobile devices 4000 can be for example mobile phone, panel computer, portable power source or handheld game device etc., but is not limited to this.And use the embodiment of the load that plural external mobile devices 4000 is used as other external power sources 2000 can to obtain to analogize according to described above, do not repeat them here.
In the above embodiment of the present invention, process circuit 1700 and can obtain the impedance R of charging wire 3000 according to formula (1), and export the impedance R of charging wire 3000 for user reference.But, impedance R may be the most directly perceived for user.On the other hand, understanding according to resistance formula (R=ρ × L/A), the impedance R of charging wire 3000 is directly proportional to the length information L of charging wire 3000, and is inversely proportional to 3000 cross-sectional area A of charging wire (or line footpath square).Wherein ρ is resistivity, and resistivity is relevant with the lead material of charging wire 3000.Due to the length information L of charging wire 3000 the most known (can be provided by manufacturer or measure its length voluntarily), the most in one embodiment of this invention, the length information L of charging wire 3000 can be provided by user, and process circuit 1700 and the line footpath (or lead material) of corresponding charging wire 3000 can be provided to user reference according to the length information L of the charging wire 3000 that user is provided and the impedance R of the charging wire 3000 calculating gained.Hereinafter will be herein described in detail.
The most again referring concurrently to Fig. 1 and Fig. 3.In one embodiment of this invention, process circuit 1700 and can include look-up table (look-uptable is called for short LUT) 1710.Process circuit 1700 can be by input and output port 1601 to receive the length information L of charging wire 3000 from external mobile devices 4000.Process circuit 1700 and can find out line footpath or the cross-sectional area of charging wire 3000 in look-up table 1710 according to the impedance R and length information L of charging wire 3000.Its center line footpath can use AWG (Americanwiregauge is called for short AWG) or diameter (unit is inch or millimeter) to represent, and the unit of cross-sectional area can use mm sq (mm2) represent, but it is not limited to this.Process circuit 1700 and can export the line footpath of charging wire 3000 to external mobile devices 4000 by input and output port 1601.
In the above embodiment of the present invention, external mobile devices 4000 can include special mobile applications (APP) 4100.And the length information L of charging wire 3000 can be supplied to the process circuit 1700 of portable power source device 1000 by APP4100.In addition, APP4100 may also display the line footpath of charging wire 3000.But the present invention is not limited thereto.
In one embodiment of this invention, the above-mentioned look-up table 1710 being built into processing circuit 1700 can be as shown in table 1.Look-up table 1710 shown in table 1 includes the unit length resistance value R of copper conductoruAnd reference line footpath value Ar, each unit length resistance value RuCan be mapped to one of them reference line footpath value Ar.The wherein unit length resistance value R of copper conductoruUnit be ohm/meter, and reference line footpath value ArUnit be AWG, but the present invention is not limited thereto.In the look-up table 1710 shown in table 1, the unit length resistance value R of copper conductoruAnd corresponding reference line footpath value ArCan be obtained by test in advance.In other embodiments of the invention, it is possible to use the look-up table 1710 of other lead material.Additionally, reference line footpath value can also represent with diameter.Or, the reference line footpath value in look-up table 1710 is the most replaceable for cross section product value.Other lead material the most above-mentioned can be for example ferrum, aluminum or silver etc., but is not limited to this, depending on visual actual design or application demand.
Table 1
Generally, when external mobile devices 4000 is coupled in input and output port 1601, user can perform the special APP4100 of external mobile devices 4000, and the length information L of charging wire 3000 is supplied to the process circuit 1700 of portable power source device 1000 by APP4100.Then, process circuit 1700 and can find out the line footpath corresponding to charging wire 3000 in look-up table 1710 according to the impedance R of the length information L of charging wire 3000 with detection gained.Then, process circuit 1700 and can export the line footpath of charging wire 3000 to external mobile devices 4000 by input and output port 1601.And the APP4100 of external mobile devices 4000 can show that the line footpath of charging wire 3000 is to user reference.
As an example it is assumed that the lead material of charging wire 3000 is copper, the length information L of charging wire 3000 is 50 centimeters, and the impedance R processing the charging wire 3000 detected by circuit 1700 is 0.021 ohm.Processing circuit 1700 can be according to the unit length resistance value R that the length information L of charging wire 3000 is 50 centimeters and impedance R to be 0.021 ohm obtain charging wire 3000dIt is 0.042 ohm/meter.Processing circuit 1700 can be according to the unit length resistance value R of charging wire 3000dBeing 0.042 ohm/meter and finding out the line footpath corresponding to charging wire 3000 in look-up table 1710 (table 1) is AWG21.Then, process circuit 1700 can by input and output port 1601 by the line footpath of charging wire 3000 be AWG21 output to external mobile devices 4000.And the information of the copper conductor that charging wire 3000 is line footpath AWG21 specification can be shown on its User's Interface by the APP4100 of external mobile devices 4000.
It is worth mentioning that, in the above-described embodiments, charging wire 3000 is not the most copper conductor, and why user the most not necessarily know the lead material of charging wire 3000, but the standard wire lattice that portable power source device 1000 remains able to length information L and impedance R according to charging wire 3000 and tables look-up out corresponding in look-up table 1710 are for user reference.The most in the above-mentioned case, even if the lead material of charging wire 3000 is not copper, but charging wire 3000 still can be considered to be equivalent to the copper conductor of AWG21 specification.This is because under identical length information L, the impedance R of charging wire 3000 is substantially the same with the resistance value of the copper conductor of AWG21 specification, and therefore both have the power consumption being substantially the same.
On the other hand, if processing the circuit 1700 unit length resistance value R according to charging wire 3000dAnd directly cannot find out the reference line footpath value corresponding to charging wire 3000 in look-up table 1710 (table 1), process circuit 1700 and also can find out the unit length resistance value R adjacent to charging wire 3000 in look-up table 1710dThe unit length resistance value R of two copper conductorsu, and use interpolation to obtain the line footpath of charging wire 3000.
For example, assuming that process circuit 1700 calculates the unit length resistance value of charging wire 3000 is 0.032 ohm/meter, directly cannot directly find out the reference line footpath value corresponding to charging wire 3000 in look-up table 1710 (table 1) owing to processing circuit 1700, therefore process circuit 1700 and can find out the unit length resistance value R adjacent to charging wire 3000 in look-up table 1710dThe unit length resistance value R of two copper conductors of (being 0.032 ohm/meter)u(being 0.02642 ohm/meter and 0.03331 ohm/meter).Process circuit 1700 can according to interpolation with obtain charging wire 3000 line footpath as AWG19.81.
In addition, in the visual actual design of User's Interface presented corresponding to the APP4100 in the line footpath of length information L and display charging wire 3000 in order to input charging wire 3000 or application demand.APP4100 is in addition to the length information L that can input charging wire 3000, it is also possible to the lead material of input charging wire 3000.Wherein the length information L of charging wire 3000 and lead material directly can be keyed in by user on the User's Interface that APP4100 is presented, or presented multiple length information L by APP4100 or the option of lead material clicks for user on User's Interface.It addition, APP4100 is in addition to the line footpath that can show charging wire 3000, it is also possible to show other parameters of charging wire 3000 individually, such as: the impedance R of charging wire 3000, length information L, cross-sectional area etc., but be not restricted to this.
In the above-described embodiments, the biggest if measuring the impedance R of charging wire 3000 arrived, it may be possible to the line footpath of charging wire 3000 itself is too thin, or the conductivity of lead material that charging wire 3000 is used itself is poor, also or charging wire 3000 has damaged itself.Therefore, user can according to the line footpath of charging wire 3000 or impedance R judge charging wire 3000 the most abnormal and as the foundation whether updating charging wire 3000.In addition, user compares also dependent on impedance R or the line footpath of a plurality of charging wire 3000, and selects one wherein depending on actual design or application demand and use.
In one embodiment of this invention, processing circuit 1700 also can the look-up table 1710 of built-in various different conductor materials.Namely each look-up table 1710 can be mapped to a kind of lead material, such as copper, ferrum, aluminum or silver etc..Thus, user can input lead material and the length information L of charging wire 3000 by APP4100, processes circuit 1700 and then can find out the line footpath of charging wire 3000 according to the lead material of charging wire 3000, length information L and detected impedance R in the look-up table 1710 of corresponding lead material.
In one embodiment of this invention, the APP4100 of external mobile devices 4000 may also comprise look-up table 4110, and wherein the look-up table 4110 of APP4100 is same as processing the look-up table 1710 (such as table 1, but be not limited to this) of circuit 1700.Consequently, it is possible to user just can update the data in look-up table 4110 by downloading the APP4100 of new external mobile devices 4000.Or, user also visual actual design or application demand and revise the data of look-up table 4110 voluntarily.The most again referring concurrently to Fig. 1 and Fig. 3.Process circuit 1700 and can export the impedance R of charging wire 3000 to external mobile devices 4000 by input and output port 1601.The person of connecing, the APP4100 of external mobile devices 4000 can find out the line footpath of charging wire 3000 according to the impedance R of the charging wire 3000 and length information L of charging wire 3000 in the look-up table 4110 of APP4100.Then, the line footpath of charging wire 3000 can be shown by APP4100.APP4100 utilizes the embodiment in the line footpath that look-up table 4110 searches charging wire 3000 to be similar to the lookup mode of above-mentioned process circuit 1700, therefore refers to the related description of above-described embodiment to be extrapolated to, and does not repeats them here.
In sum, the portable power source device described in the embodiment of the present invention can be used to measure the impedance of charging wire.The person of connecing, can be inputted length information or the lead material of charging wire by the APP in the mobile device being couple to portable power source device.Processing circuit and can find out the line footpath of charging wire according to the impedance of charging wire and length information or lead material in look-up table in a processing circuit in portable power source device, and the line footpath of charging wire is exported mobile device.Or, the impedance processing the exportable charging wire of circuit in portable power source device is to mobile device.The APP of mobile device can find out the line footpath of charging wire according to the impedance of charging wire and length information or lead material in the look-up table of APP.Last line footpath or the impedance being shown charging wire again by the APP of mobile device.Consequently, it is possible to user can learn this charging wire influence degree to device charge efficiency according to the line footpath of charging wire or impedance.User judges to be that this charging wire is the most abnormal and foundation as renewal charging wire also dependent on the line footpath of charging wire or impedance.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or the most some or all of technical characteristic is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the portable power source device being applicable to measure charging wire impedance, it is characterised in that including:
At least one input port, in order to receive at least one input power signal using as at least one test signal by least one charging wire from least one external power source；
At least one first testing circuit, it is couple to this at least one input port to receive this at least one test signal, when this at least one external power source is unloaded, detect the voltage of this at least one test signal using as at least one floating voltage value, and when this at least one external power source is for there being load, detect voltage and the electric current of this at least one test signal using as at least one load voltage values and at least one load current value；And
Process circuit, be couple to this at least one first testing circuit, receive this at least one floating voltage value, this at least one load voltage values with this at least one load current value to calculate the impedance of this at least one charging wire.
The portable power source device being applicable to measure charging wire impedance the most according to claim 1, it is characterised in that also include:
Charging control unit, is couple to this at least one input port to receive this at least one test signal, and this charging control unit is controlled by this process circuit to change this at least one test signal, thus produces charging signals；And
Battery, is couple to this charging control unit, and receives this charging signals to be charged.
The portable power source device being applicable to measure charging wire impedance the most according to claim 2, it is characterised in that this battery is in order to the load as this at least one external power source, wherein:
This process this charging control unit of circuit forbidden energy is to stop changing, this at least one test signal so that this at least one external power source is unloaded state；And
This process circuit enables this charging control unit to start to change, this at least one test signal so that this at least one external power source is the state having load.
The portable power source device being applicable to measure charging wire impedance the most according to claim 2, it is characterised in that also include:
At least one input and output port, is couple to this process circuit, this process circuit by this at least one input and output port to communicate with at least one external mobile devices.
The portable power source device being applicable to measure charging wire impedance the most according to claim 4, it is characterized in that, this process circuit includes at least one look-up table, this process circuit by this at least one input and output port to receive the length information of this at least one charging wire from this at least one external mobile devices, this process circuit finds out the line footpath of this at least one charging wire according to this impedance and this length information of this at least one charging wire in this at least one look-up table, this process circuit exports this line footpath of this at least one charging wire to this at least one external mobile devices by this at least one input and output port.
The portable power source device being applicable to measure charging wire impedance the most according to claim 5, it is characterized in that, this at least one external mobile devices includes mobile applications APP, this length information of this at least one charging wire is supplied to this process circuit of this portable power source device by this mobile applications, and this mobile applications is in order to show this line footpath of this at least one charging wire.
The portable power source device being applicable to measure charging wire impedance the most according to claim 5, it is characterised in that this at least one look-up table includes:
Multiple unit length resistance values；And
Multiple reference line footpaths are worth,
Wherein each of those unit length resistance values corresponds to one of them of those reference line footpath values.
The portable power source device being applicable to measure charging wire impedance the most according to claim 7, it is characterised in that this at least one look-up table corresponds at least one lead material.
The portable power source device being applicable to measure charging wire impedance the most according to claim 4, it is characterised in that:
This process circuit exports this impedance of this at least one charging wire to this at least one external mobile devices by this at least one input and output port,
Wherein the mobile applications of this at least one external mobile devices finds out the line footpath of this at least one charging wire according to this impedance of this at least one charging wire and the length information of this at least one charging wire at least one look-up table of this mobile applications, and in order to show this line footpath of this at least one charging wire.
The portable power source device being applicable to measure charging wire impedance the most according to claim 4, it is characterised in that also include:
Control of discharge unit, is coupled between this battery and this at least one input and output port, and this control of discharge unit is controlled by this process circuit to be changed with the voltage to this battery, thus produces at least one discharge signal,
Wherein this at least one input and output port receives this at least one discharge signal using as at least one out-put supply signal, and provides this at least one out-put supply signal to this at least one external mobile devices.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510004772.7A CN105826955A (en) | 2015-01-06 | 2015-01-06 | Mobile power supply device applicable to measuring impedance of charging line |
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| CN201510004772.7A CN105826955A (en) | 2015-01-06 | 2015-01-06 | Mobile power supply device applicable to measuring impedance of charging line |
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| CN105826955A true CN105826955A (en) | 2016-08-03 |
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| CN201510004772.7A Pending CN105826955A (en) | 2015-01-06 | 2015-01-06 | Mobile power supply device applicable to measuring impedance of charging line |
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Application publication date: 20160803 |