CN104467123B - Charging method, device, charger, electronic installation and equipment - Google Patents
Charging method, device, charger, electronic installation and equipment Download PDFInfo
- Publication number
- CN104467123B CN104467123B CN201410856068.XA CN201410856068A CN104467123B CN 104467123 B CN104467123 B CN 104467123B CN 201410856068 A CN201410856068 A CN 201410856068A CN 104467123 B CN104467123 B CN 104467123B
- Authority
- CN
- China
- Prior art keywords
- current
- charger
- value
- pwm
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H02J7/042—
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
A kind of charging method, device, charger, electronic installation and equipment, the charging method include：When receiving the signal of expression battery current voltage value of charging equipment transmission, the battery current voltage value is obtained；According to the battery current voltage value, the output voltage of charger is adjusted.Using the charging method, device, charger, electronic installation and equipment, it is possible to reduce power attenuation of the charging circuit in charging process.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of charging method, device, charger, electronic installation and set
It is standby.
Background technology
In existing national standard charger, the output voltage of charger is 5V, and output current is then according to the nominal value of charger
It is different and different, between generally 300mA~1800mA.
Existing USB national standards charger generally comprises four ports：VBUS ports, DP ports, DM ports and GND ends
Mouthful, wherein, VBUS ports are the output port of charger, DP ports and two signal ports that DM ports are USB interface.Logical
Overcharge electrical equipment and treat charging equipment, when mobile terminal is charged such as mobile phone, charging equipment is by detecting charger
Whether short circuit judges whether current charger is national standard charger for DM and DP ports.It is determined that current charger charges for national standard
During device, charger is charged using fixed output voltage as charging equipment.
However, when using the above method to be charged for charging equipment, charger is using fixed output voltage to treat
Charging equipment is charged, and there is the problem of charging circuit power attenuation is higher.
The content of the invention
The problem of embodiment of the present invention is solved is the power attenuation for how reducing charging circuit in charging process.
To solve the above problems, the embodiment of the present invention provides a kind of charging method, including：
When receiving the signal of expression battery current voltage value of charging equipment transmission, the battery is obtained currently electric
Pressure value；
According to the battery current voltage value, the output voltage of charger is adjusted.
Optionally, during the signal of the expression battery current voltage value for receiving charging equipment transmission, obtain described
Battery current voltage value, including：
The first PWM ripples of charging equipment transmission are received, the dutycycle and the battery of the first PWM ripples are currently electric
Pressure value correspondence；
The dutycycle of the first PWM ripples is obtained, according to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, is obtained
Take the battery current voltage value.
Optionally, it is described according to the battery current voltage value, the output voltage of charger is adjusted, including：By the electricity
Pond current voltage value is added with default voltage difference, and regard obtain and value as the output electricity after charger adjustment
Pressure.
To solve the above problems, the embodiment of the present invention additionally provides a kind of charging device, including：
First acquisition unit, for when receive charging equipment transmission expression battery current voltage value signal when,
Obtain the battery current voltage value；
First adjustment unit, for according to the battery current voltage value, adjusting the output voltage of charger.
Optionally, the first acquisition unit is used for：Receive the first PWM ripples of charging equipment transmission, described first
The dutycycle of PWM ripples is corresponding with the battery current voltage value；
The dutycycle of the first PWM ripples is obtained, according to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, is obtained
Take the battery current voltage value.
Optionally, first adjustment unit is used to the battery current voltage value being added with default voltage difference,
And the output voltage after obtain and value is adjusted as the charger.
To solve the above problems, the embodiment of the present invention additionally provides a kind of charger, including：PWM feedback circuit and electricity
Pressure converter, wherein：
The PWM feedback circuit, suitable for receiving the first PWM ripples that charging equipment is sent, obtains the first PWM ripples pair
The battery current voltage value for the charging equipment answered；
The electric pressure converter, suitable for according to the battery current voltage value, adjusting the output voltage of charger.
Optionally, the PWM feedback circuit includes：Sample circuit, suitable for being sampled to the first PWM ripples, to obtain
Take the dutycycle of the first PWM ripples.
Optionally, the sample circuit includes adc circuit.
Optionally, the PWM feedback circuit includes：Low pass filter；ADC or computing with the low pass filter coupled
Amplifier.
Optionally, the electric pressure converter is AC-DC converter or dc-dc.
Optionally, when the electric pressure converter is AC-DC converter, in the AC-DC converter and the PWM feedback
Isolator is set between circuit, suitable for the AC-DC converter is isolated with the PWM feedback circuit physical.
Optionally, the isolator is LMDS Light Coupled Device.
The embodiment of the present invention additionally provides a kind of charging method, including：When the letter for receiving expression battery current voltage value
Number when, obtain the battery current voltage value；According to the battery current voltage value, the output voltage of charger is adjusted.
It is optionally, described to obtain the battery current voltage value when receiving the signal for representing battery current voltage value,
Including：The first PWM ripples are received, the dutycycle of the first PWM ripples are obtained, according to default magnitude of voltage and PWM ripple dutycycles
Corresponding relation, obtain the battery current voltage value.
Optionally, it is described according to the battery current voltage value, the output voltage of charger is adjusted, including：By the electricity
Pond current voltage value is added with default voltage difference, and regard obtain and value as the output electricity after charger adjustment
Pressure.
The embodiment of the present invention additionally provides another charging device, including：First acquisition unit, expression is received for working as
During the signal of battery current voltage value, the battery current voltage value is obtained；First adjustment unit, for being worked as according to the battery
Preceding magnitude of voltage, adjusts the output voltage of charger.
Optionally, the first acquisition unit is used to receive the first PWM ripples, obtains the dutycycle of the first PWM ripples, root
According to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, the battery current voltage value is obtained, the first PWM ripples
Dutycycle is corresponding with the battery current voltage value.
Optionally, first adjustment unit is used to the battery current voltage value being added with default voltage difference,
And the output voltage after obtain and value is adjusted as the charger.
The embodiment of the present invention additionally provides a kind of charger, including：PWM feedback circuit and electric pressure converter, wherein：Institute
PWM feedback circuit is stated, suitable for receiving the first PWM ripples, the corresponding battery current voltage value of the first PWM ripples is obtained；The electricity
Pressure converter, suitable for according to the battery current voltage value, adjusting the output voltage of charger.
Optionally, the PWM feedback circuit includes：Sample circuit, suitable for being sampled to the first PWM ripples, to obtain
Take the dutycycle of the first PWM ripples.
Optionally, the sample circuit includes adc circuit.
Optionally, the PWM feedback circuit includes：Low pass filter；ADC or computing with the low pass filter coupled
Amplifier.
Optionally, the low pass filter include it is following any one：Low-pass first order filter, second-order low-pass filter.
Optionally, the electric pressure converter is AC-DC converter or dc-dc.
Optionally, when the electric pressure converter is AC-DC converter, in the AC-DC converter and the PWM feedback
Isolator is set between circuit, suitable for the AC-DC converter is isolated with the PWM feedback circuit physical.
Optionally, the isolator is LMDS Light Coupled Device.
The embodiment of the present invention additionally provides a kind of charging method of charging equipment, including：Obtain battery current voltage value；
The signal for representing the battery current voltage value is sent to charger.
Optionally, the signal for representing the battery current voltage value is the first PWM ripples, and the first PWM ripples are accounted for
Sky is than corresponding with the battery current voltage value.
The embodiment of the present invention additionally provides a kind of device to be charged, including：Second acquisition unit, it is current for obtaining battery
Magnitude of voltage；Second transmitting element, for the signal for representing the battery current voltage value to be sent to charger.
Optionally, second transmitting element is used to send the first PWM ripples to charger, and the first PWM ripples are accounted for
Sky is than corresponding with the battery current voltage value.
The embodiment of the present invention additionally provides a kind of charging equipment, including：PWM output circuits, the PWM output circuits are fitted
In the battery current voltage value for obtaining charging equipment, the battery current voltage value is converted into the first of duty ratio corresponding
PWM ripples, and send to charger.
Optionally, the PWM output circuits include：Comparator；The saw-toothed wave generator coupled with the comparator.
The embodiment of the present invention additionally provides another charging method, including：Obtain battery current voltage value；It will represent described
The signal of battery current voltage value is sent.
Optionally, the signal for representing the battery current voltage value is the first PWM ripples, and the first PWM ripples are accounted for
Sky is than corresponding with the battery current voltage value.
The embodiment of the present invention additionally provides another electronic installation, including：Second acquisition unit, it is current for obtaining battery
Magnitude of voltage；Second transmitting element, for the signal for identifying the battery current voltage value to be sent.
Optionally, second transmitting element is used to send in the first PWM ripples, the dutycycle of the first PWM ripples and institute
State battery current voltage value correspondence.
The embodiment of the present invention additionally provides a kind of electronic equipment, including：PWM output circuits, the PWM output circuits are suitable to
Battery current voltage value is obtained, the battery current voltage value is converted into the first PWM ripples of duty ratio corresponding and sent.
Optionally, the PWM output circuits include：Comparator；The saw-toothed wave generator coupled with the comparator.
Compared with prior art, the technical scheme of the embodiment of the present invention has advantages below：
Charger obtains the current of battery by receiving the signal for representing battery current voltage value that charging equipment is sent
Magnitude of voltage, is adjusted according to battery current voltage value to output voltage, rather than is exported with fixed voltage.In charging
During, the output voltage of charger changes and changed with cell voltage, in the case where the output current of charger is constant, drop
The output voltage of low charger, can cause the difference between the output voltage of charger and the magnitude of voltage of battery to reduce, so that
The loss in charging process in charging circuit can be reduced.
Brief description of the drawings
Fig. 1 is a kind of flow chart of charging method in the embodiment of the present invention；
Fig. 2 is a kind of structural representation of charging device in the embodiment of the present invention；
Fig. 3 is a kind of structural representation of charger in the embodiment of the present invention；
Fig. 4 is a kind of structural representation of PWM feedback circuit in the embodiment of the present invention；
Fig. 5 is the structural representation of another PWM feedback circuit in the embodiment of the present invention；
Fig. 6 is the structural representation of another charger in the embodiment of the present invention；
Fig. 7 is the flow chart of another charging method in the embodiment of the present invention；
Fig. 8 is a kind of charging method flow chart of charging equipment in the embodiment of the present invention；
Fig. 9 is a kind of structural representation of device to be charged in the embodiment of the present invention；
Figure 10 is a kind of structural representation of PWM output circuits in the embodiment of the present invention；
Figure 11 is another charging method flow chart in the embodiment of the present invention.
Embodiment
By USB charger to charging equipment, when mobile terminal is charged such as mobile phone, charging equipment lead to
Crossing DM the and DP ports of detection charger, whether short circuit judges whether current charger is national standard charger.It is determined that currently filling
When electrical equipment is national standard charger, charger is charged using fixed output voltage as charging equipment.However, using above-mentioned
When method is that charging equipment is charged, charger is charged using fixed output voltage as charging equipment, is existed and is filled
The problem of electric circuit power loss is higher.
In embodiments of the present invention, charger is by receiving the letter for representing battery current voltage value that charging equipment is sent
Number, the current voltage value of battery is obtained, output voltage is adjusted according to battery current voltage value, rather than with fixed electricity
Pressure is exported.In charging process, the output voltage of charger changes and changed with cell voltage, in the output electricity of charger
Stream it is constant in the case of, reduce charger output voltage, can cause charger output voltage and battery magnitude of voltage it
Between difference reduction, so as to reduce the power attenuation in charging circuit in charging process.
It is understandable to enable the above-mentioned purpose of the embodiment of the present invention, feature and advantage to become apparent, it is right below in conjunction with the accompanying drawings
The specific embodiment of the present invention is described in detail.
The embodiments of the invention provide a kind of charging method, reference picture 1 is described in detail below by way of specific steps.
Step S101, when receiving the signal of expression battery current voltage value of charging equipment transmission, obtains described
Battery current voltage value.
In specific implementation, charging equipment can be any equipment for including the device that can store electric energy, charging
Device can be the charger with USB interface.For example, charging equipment can for mobile phone terminal, tablet personal computer etc. or
Charger baby, portable power source etc. can store the equipment of electric energy, can also be other equipment, as long as including that can store the dress of electric energy
Put, do not repeat herein.
In embodiments of the present invention, in charging process, the voltage of battery can change with charging duration.Treat
Charging equipment can obtain the current voltage value of battery in real time, and the signal for representing battery current voltage value is sent to charger.
Charger can obtain battery current voltage after the signal of expression battery current voltage value of charging equipment transmission is received
Value, and perform step S102.
In an embodiment of the present invention, the signal for the expression battery current voltage value that charging equipment is sent is certain duty
First PWM ripples of ratio.PWM ripple generating means are set in charging equipment, according to default magnitude of voltage and PWM ripple dutycycles
Battery current voltage value, is converted into the first PWM ripples of duty ratio corresponding by PWM ripples generating means by corresponding relation, and by
One PWM ripples are sent to charger.In other embodiments of the present invention, the expression battery current voltage value that charging equipment is sent
Signal can also be the signal of other forms, not repeat herein.
In an embodiment of the present invention, the PWM ripples generating means set in charging equipment include comparator.Comparator leads to
The magnitude of voltage for comparing two input inputs is crossed, corresponding high level or low level is exported.According to default magnitude of voltage and PWM ripples
The corresponding relation of dutycycle, obtains the dutycycle of the corresponding first PWM ripples of battery current voltage value.The first input end of comparator
Input sawtooth waveforms, the second input input a corresponding magnitude of voltage V1, by mutually in the same time V1 in the corresponding electricity of sawtooth waveforms
Pressure value is compared, output high level or low level.By adjusting magnitude of voltage V1, you can produce duty ratio corresponding by comparator
The first PWM ripples.
In an embodiment of the present invention, magnitude of voltage V1 and PWM ripple dutycycles corresponding relation can be pre-established, for example,
Corresponding PWM ripples dutycycle is 70% during magnitude of voltage V1=1.4V, and corresponding PWM ripples dutycycle is during magnitude of voltage V1=1.2V
60% etc., thus, when getting the dutycycle of the corresponding first PWM ripples of charging equipment battery current voltage value, comparator
The second input input default magnitude of voltage V1=1.4V, so as to generate the first PWM ripples that dutycycle is 70%.
For example, for mobile terminals such as mobile phones, the voltage of the lithium battery used or other kinds of battery is general not
5V, generally 4.2V or 4.35V can be exceeded.In normal work, the minimum voltage of battery is typically not less than 3V.5V pairs of setting
The PWM ripples dutycycle answered is that the corresponding PWM ripples dutycycles of 100%, 3V are 20%, then battery current voltage value VBATCorresponding PWM
Ripple dutycycle is Duty=(VBAT- 3)/(5-3) * 80%+20%.
Battery current voltage value is VBAT=4V, then the corresponding PWM ripples dutycycle of battery current voltage value is Duty=(4-
3)/(5-3) * 80%+20%=60%.It can be seen from default magnitude of voltage V1 and the corresponding relation of PWM ripple dutycycles, V1=
Comparator produces the PWM ripples that dutycycle is 60% during 1.2V, therefore, the second input input 1.2V of comparator, so as to
The first PWM ripples that dutycycle is 60% are produced, and are sent to charger.
The first PWM ripples that charging equipment is sent are received by PWM wave receiving devices, and get accounting for for the first PWM ripples
Sky is than being 60%.According to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, charger can know charging equipment
Battery current voltage value is 4V.
It is understood that battery current voltage value and the corresponding relation of PWM ripple dutycycles are not limited in the present invention
The corresponding relation provided in embodiment is stated, the corresponding relation that there can also be other forms is not repeated herein.
Step S102, according to the battery current voltage value, adjusts the output voltage of charger.
In specific implementation, charger, can be by the current of the battery got after battery current voltage value is got
Magnitude of voltage carries out sum operation with default voltage difference, and obtain and value is adjusted as the charger output voltage after adjustment
The output voltage of charger after whole is the current voltage value and default voltage difference sum of battery.
In embodiments of the present invention, default voltage difference can in advance be measured and obtained, and its implication can be：Can
Difference when meeting charger output rated current between the output voltage values and battery voltage value of charger.In practical application
In, default voltage difference can be between 0.4V~0.6V, or other values.In an embodiment of the present invention, preset
Voltage difference be 0.5V.
For example, charger knows that the battery current voltage value of charging equipment is 4V, default voltage difference is 0.5V, then
The output voltage values of charger after adjustment are that 4.5V, i.e. charger are exported with 4.5V voltage.
So that charging equipment uses linear-charging mode as an example, in the prior art, set the output voltage values of charger as
5V, output current value is 1A, i.e., the power output of charger is 5W.The battery current voltage value of charging equipment is 3.2V, line
In property charging modes, the input current of charging equipment electric current can be equal with the output current of charger, i.e. charging equipment
Battery input current be 1A, then the current input power of battery be 3.2W.The power output of charger and battery it is current
Difference between input power is 5W-3.2W=1.8W, that is, the energy for having 1.8W is wasted.
And the method in the embodiment of the present invention is used, battery current voltage value is 3.2V, and charging equipment is sent out to charger
Send the signal for representing battery current voltage value so that charger knows that battery current voltage value is 3.2V, by battery current voltage
Value is added with default voltage difference, and default voltage difference is 0.5V, then the charger output voltage after being adjusted is
3.7V, the output current of charger keeps constant, is still 1A, then the power output of charger is 3.7W, the current input of battery
Power is 3.2W, and the difference between the output power value of charger and the current input power of battery is 3.7W-3.2W=0.5W,
The energy for only having 0.5W is wasted.Energy compared to 1.8W of the prior art is wasted, and the embodiment of the present invention subtracts significantly
Power attenuation of the charging circuit in charging process is lacked.
As can be seen here, charger is obtained by receiving the signal for representing battery current voltage value that charging equipment is sent
The current voltage value of battery, is adjusted according to battery current voltage value to output voltage, rather than is carried out with fixed voltage
Output.In charging process, the output voltage of charger changes and changed with cell voltage, constant in the output current of charger
In the case of, the output voltage of charger is reduced, the difference between the output voltage of charger and the magnitude of voltage of battery can be caused
Value reduction, so as to reduce the power attenuation in charging circuit in charging process.
In embodiments of the present invention, more rapidly charged to realize, the embodiment of the present invention additionally provides another charging
Method, after the completion of step S102 execution, can also carry out following operation：
The signal for including current nominal output current value is sent to the charging equipment so that the charging equipment root
Preset charged current value is adjusted according to the current nominal output current value, and is charged with the charging current value after adjustment.
In specific implementation, charger is when to charging equipment output current, and the current value of output can be charger
Output-current rating value.Charger can send to charging equipment and include while to charging equipment output current
The signal of current nominal output current value so that charging equipment upon receipt of the signal, can obtain the current of charger
Output-current rating value.The signal that charger is sent to charging equipment can include the signal of diversified forms, be treated as long as meeting
Charging equipment can obtain the current nominal output current value of charger.
In embodiments of the present invention, when charger is in holding state, the DP ports of charger and DM ports short circuit.Fill
Electrical equipment detects the magnitude of voltage on DP ports in real time, is reached when detecting duration of the magnitude of voltage on DP ports higher than preset voltage value
During preset duration, charger disconnects DM ports and DP ports, is sent to charging equipment and includes current nominal output current value
Signal.
In an embodiment of the present invention, charger detects the magnitude of voltage on DP ports in real time.When charging equipment and charging
When device is connected, charging equipment sends signal to charger, for example, send request signal or enable the mode of signal so that charging
Voltage rise on the DP ports of device.When the duration that the voltage on DP ports is increased to Vth reaches preset duration, charger will
The DM ports of short circuit and DP ports are disconnected, and the signal for including current nominal output current value is sent to charging equipment.
In embodiments of the present invention, according to step S101~step S102, charger is being adjusted it to output voltage
Afterwards, the corresponding output-current rating value of output voltage values after adjustment and the output-current rating value phase before output voltage adjustment
The signal for including current nominal output current value is sent to charging equipment Deng, charger.
In an embodiment of the present invention, the signal comprising current nominal output current value that charger is sent is certain duty
2nd PWM ripples of ratio.PWM ripple generating means are set in charger, it is corresponding with PWM ripple dutycycles according to default current value
Relation, the current nominal output current value of charger is converted into the 2nd PWM ripples of duty ratio corresponding, and the 2nd PWM ripples are sent out
Deliver to charging equipment.
In an embodiment of the present invention, PWM ripples generating means can be comparator, the first input end input saw of comparator
Tooth ripple, the second input input needs the corresponding magnitude of voltage of current nominal output current value for the charger modulated, so as to
Produce the 2nd PWM ripples of duty ratio corresponding.
For example, the output-current rating value of current charger is 2A, corresponding magnitude of voltage is 5V, then the second of comparator
The corresponding magnitude of voltage 5V of input input 2A, so as to produce the 2nd PWM ripples of duty ratio corresponding.
In other embodiments of the present invention, the PWM ripples generating means in charger can also be that other can generate PWM ripples
Device, do not repeat herein.
PWM wave receiving devices can be set at charging equipment end, charger transmission is received in PWM wave receiving devices
After 2nd PWM ripples, the corresponding dutycycle of the 2nd PWM ripples is obtained, is closed according to default current value is corresponding with PWM ripple dutycycles
System, you can obtain the current nominal output current value of charger.
The maximum current bearing capacity of generic USB interface is set as maxoutA, is using maxoutA as PWM ripple dutycycles
100% corresponding current value, charger current nominal output current value is maxA, and maxA ＜ maxoutA, then by current nominal
The dutycycle of the corresponding PWM ripples of output current value is (maxA/maxoutA) × 100%.Charging equipment is receiving charger
After the PWM ripples of transmission, the dutycycle of the PWM ripples received can be obtained, is accounted for according to the default current value in charger end and PWM ripples
The corresponding relation of empty ratio, you can know the current nominal output current value of charger.
For example, the maximum current bearing capacity of generic USB interface is 2.5A, charger current nominal output current value is volume
Current value is determined for 2A, then the dutycycle of the corresponding PWM ripples of current nominal output current value is：2/2.5 × 100%=80%, i.e.,
Charger sends the PWM ripples that dutycycle is 80% to charging equipment.Charging equipment is receiving the PWM ripples of charger transmission
Afterwards, the dutycycle for getting PWM ripples is 80%, according to default current value and the corresponding relation of PWM ripple dutycycles, you can know
Charger current nominal output current value is 2A.
In other embodiments of the present invention, the output of charger current nominal can also be obtained by other computing modes
PWM ripple dutycycles corresponding to current value, are not repeated herein.
In embodiments of the present invention, it is different for the charging modes of charging equipment, in the output current value phase of charger
With in the case of, the charging current I of corresponding charging equipmentCHGCan and it differ.In actual applications, charging equipment
Charging modes can be linear-charging.
When the charging modes of charging equipment are linear-charging, ICHGIt is equal with the output current value of charger.Obtaining
To the corresponding charging current value I of output-current rating value of chargerCHGAfterwards, can be by ICHGDefault with charging equipment is filled
Electric current value I0It is compared.Work as ICHG＞ I0When, the preset charged electric current of charging equipment can be adjusted to ICHGOr be slightly less than
ICHG, and with ICHGOr it is slightly less than ICHGCurrent value charged, so as to realize quick charge.Work as ICHG≤I0When, can be with ICHG
Or it is slightly less than ICHGCurrent value charged so that in the case of quick charge as far as possible, protect charger.
As can be seen here, the signal for including current nominal output current value is sent to charging equipment by charger so that
Charging equipment obtains the current nominal output current value of charger, and charging current is adjusted, rather than only with fixation
Preset charged current value charged.It is more than in the corresponding charging current value of current nominal output current value of charger and waits to fill
During the charging current of the fixation of electric equipment, the charging current of charging equipment is adjusted so that the charging current value after adjustment is more than
Fixed preset charged current value, can make full use of the output current of charger, so as to realize quick charge.
Reference picture 2, the embodiments of the invention provide a kind of charging device 20, including：First acquisition unit 201 and first
Adjustment unit 202, wherein：
First acquisition unit 201, for when the signal for the expression battery current voltage value for receiving charging equipment transmission
When, obtain the battery current voltage value；
First adjustment unit 202, for according to the battery current voltage value, adjusting the output voltage of charger.
In specific implementation, the first acquisition unit 201 can be used for：Receive the first of charging equipment transmission
PWM ripples, the dutycycle of the first PWM ripples is corresponding with the battery current voltage value；Obtain the duty of the first PWM ripples
Than according to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, obtaining the battery current voltage value.
In specific implementation, first adjustment unit 202 can be used for by the battery current voltage value with it is default
Voltage difference is added, and regard obtain and value as the output voltage after charger adjustment.
In embodiments of the present invention, the default voltage difference can be 0.4V~0.6V.
The embodiment of the present invention additionally provides a kind of charger, reference picture 3, including：PWM feedback circuit 301 and voltage turn
Parallel operation 302, wherein：
The PWM feedback circuit 301, suitable for receiving the first PWM ripples that charging equipment is sent, obtains the first PWM
The battery current voltage value of the corresponding charging equipment of ripple.
In embodiments of the present invention, in charging process, it can be sent by charging equipment to charger and represent battery
First PWM ripples of current voltage value.Charging equipment can according to the corresponding relation of default magnitude of voltage and PWM ripple dutycycles,
Battery current voltage value is converted into the first PWM ripples of duty ratio corresponding, and sent to charger.
For example, the battery current voltage value of charging equipment is 4V, according to default magnitude of voltage and pair of PWM ripple dutycycles
It should be related to and understand, the corresponding PWM ripples dutycycles of 4V are 60%, then it is 60% that charging equipment sends dutycycle to charger
PWM ripples.
In embodiments of the present invention, PWM feedback circuit 301 can include sample circuit, by sample circuit to the first PWM
Ripple is sampled, and so as to obtain the dutycycle of the first PWM ripples, and then obtains the corresponding battery current voltage of the first PWM ripples
Value.
In an embodiment of the present invention, sample circuit can include high frequency clock circuit.Produced by high frequency clock circuit
High-frequency impulse, step-by-step counting is carried out to the high level and low level of the first PWM ripples respectively.According to the corresponding umber of pulse of high level with
And the corresponding umber of pulse of low level, you can know the dutycycle of the first PWM ripples.Further according to default magnitude of voltage and PWM ripple duties
The corresponding relation of ratio, you can know battery current voltage value, and battery current voltage value is sent to electric pressure converter 302.
PWM feedback circuit 301 can also be other kinds of circuit.In an embodiment of the present invention, PWM feedback circuit
301 include low pass filter and the ADC with low pass filter coupled, are converted into the first PWM ripples pair by low pass filter
The direct current signal of magnitude of voltage is answered, the corresponding magnitude of voltage of direct current signal is obtained by ADC, and the corresponding magnitude of voltage of direct current signal is sent out
Deliver to electric pressure converter 302.
Reference picture 4, gives a kind of structural representation of PWM feedback circuit in the embodiment of the present invention, including：Low pass filtered
Ripple device and an ADC, low pass filter can be made up of resistance R1 and electric capacity C1.Below to the work of above-mentioned PWM feedback circuit
It is illustrated as flow.
The dutycycle of first PWM ripples is 60%, and corresponding magnitude of voltage is 4V.The high level of first PWM ripples is 3V, low level
For 0V.The first PWM ripples are filtered by low pass filter, the first PWM ripples a direct current signal are converted into, and send extremely
ADC, the magnitude of voltage of direct current signal is 3V × 60%=1.8V.The voltage that ADC collects the direct current signal currently inputted is 1.8V,
The dutycycle that would know that the first PWM ripples is 60%, according to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, you can
It is 4V to know the corresponding battery current voltage value of the first PWM ripples, and it is 4V's to send battery current voltage value to electric pressure converter 302
Signal.
In an alternative embodiment of the invention, PWM feedback circuit 301 includes low pass filter and and low pass filter coupled
Operational amplifier, the first PWM ripples are converted into the direct current signal of corresponding voltage value by low pass filter, pass through operation amplifier
Device is zoomed in and out in proportion to the magnitude of voltage of direct current signal so that the magnitude of voltage after scaling is in electric pressure converter 302
Within working range, and send to electric pressure converter 302.For example, by operational amplifier the magnitude of voltage of direct current signal is pressed than
Example is zoomed in and out so that the magnitude of voltage after scaling is within the working range of the adjustment circuit of electric pressure converter 302.Electricity
Pressure converter 302 is according to default ratio transformational relation, you can know the corresponding battery current voltage value of the first PWM ripples.
Reference picture 5, gives the structural representation of another PWM feedback circuit in one embodiment of the invention, including：It is low
Bandpass filter and an operation amplifier circuit, low pass filter can be made up of resistance R2 and electric capacity C2, operational amplifier
Circuit can include operational amplifier A 1 and resistance R3 and R4 are constituted, and the workflow to above-mentioned PWM feedback circuit is entered below
Row is illustrated.
The dutycycle of first PWM ripples is 60%, and corresponding magnitude of voltage is 4V.The high level of first PWM ripples is 3V, low level
For 0V.The first PWM ripples are filtered by RC low pass filters, the first PWM ripples a direct current signal are converted into, and send
To the "+" input of operational amplifier A 1, the magnitude of voltage of direct current signal is 3V × 60%=1.8V.The tune of electric pressure converter 302
The working range of whole circuit is 0.5V~1V, then the magnitude of voltage of input is scaled into 0.6V by operational amplifier A 1, and input
To electric pressure converter 302.When the input of the adjustment circuit of electric pressure converter 302 is 0.6V, electric pressure converter exports 4V electricity
Pressure.
In the above embodiment of the present invention, low pass filter can be low-pass first order filter, or step low-pass
Wave filter or other kinds of low pass filter.For example, in an embodiment of the present invention, using low-pass first order filter as low
Bandpass filter, processing is filtered to the first PWM ripples received.And in an alternative embodiment of the invention, then it is low using second order
Bandpass filter is used as low pass filter.
It is understood that in specific implementation, the structure of PWM feedback circuit is not limited in the above embodiment of the present invention
Provided in several structures, the structure of other forms can also be included, as long as can obtain the corresponding battery of the first PWM ripples work as
Preceding magnitude of voltage is simultaneously sent to electric pressure converter, is not repeated herein.
The electric pressure converter 302, suitable for according to the battery current voltage value, adjusting the output voltage of charger.
In embodiments of the present invention, electric pressure converter 302 is receiving the charging equipment of the transmission of PWM feedback circuit 301
Battery current voltage value after, the output voltage of charger can be adjusted according to battery current voltage value so that charger
Output voltage meets the demand of charging equipment.
In an embodiment of the present invention, the output voltage of charger is adjusted to by electric pressure converter 302：Battery current voltage
Value and default voltage difference sum.
For example, PWM feedback circuit 301 detects battery current voltage value for 4V, default voltage difference is 0.5V, by electricity
Pond current voltage value is summed with default voltage difference, and the output voltage values for obtaining charger should be 4.5V.Electric pressure converter 302
The battery current voltage value for receiving the transmission of PWM feedback circuit 301 is 4V signal, and progress is exported to the current voltage of charger
Adjustment, 4.5V is adjusted to by the current output voltage value of charger.
And for example, the voltage that electric pressure converter 302 is received is 0.7V, according to default corresponding relation, learns 0.7V correspondences
Battery current voltage value be 4V, default voltage difference is 0.5V, therefore electric pressure converter is by the current output of charger electricity
Pressure value is adjusted to 4.5V.
In embodiments of the present invention, electric pressure converter 302 can be AC-DC converter, or dc-dc.
When electric pressure converter is AC-DC converter, because the voltage at the two ends of PWM feedback circuit 301 is relatively low, generally less than equal to 20V,
, for the sake of security, can be in AC-DC converter beyond the scope of human safety voltage and the magnitude of voltage of AC-DC sides is higher
Isolating device is set between PWM feedback circuit, AC-DC converter is isolated with PWM feedback circuit physical, so as to avoid
The potential safety hazard existed because human body is contactd by mistake.
In an embodiment of the present invention, isolator is LMDS Light Coupled Device.Isolator can also be other kinds of device, only
Meet and isolate AC-DC change-over circuits with PWM feedback circuit physical, here is omitted.
The workflow of the charger provided below by instantiation the above embodiment of the present invention is described in detail.
Charging equipment can obtain the current voltage value of battery in real time after the output current of charger is received, and
The signal for representing battery current voltage value is sent to charger.The battery current voltage value of charging equipment is 4V.According to default
Magnitude of voltage and PWM ripple dutycycles corresponding relation it is known that the dutycycle of the corresponding PWM ripples of 4V is 60%.Therefore, wait to fill
Electric equipment sends the first PWM ripples that dutycycle is 60% by default PWM ripples generating means to charger.
Charger receives the first PWM ripples by PWM feedback circuit 301, and it is filtered to the first PWM ripples by low pass filter
Afterwards, the dutycycle for obtaining the first PWM ripples by sample circuit is 60%, it can thus be appreciated that battery current voltage value is 4V.PWM feedback
Circuit 301 sends battery current voltage value to AC-DC for 4V signal, and default voltage difference is 0.5V, and AC-DC will charge
The output voltage values of device are adjusted as 4.5V.
To sum up, you can realization is adjusted by charging equipment to the output voltage of charger.
Reference picture 6, gives a kind of structural representation of charger during the present invention one is implemented, including：PWM feedback circuit
601st, AC-DC converter 602, isolating device 603 and switching power circuit 604.
The PWM feedback circuit 601 of charger receives the first PWM ripples that charging equipment is sent by DP ports, obtains the
The dutycycle of one PWM ripples, so as to obtain battery current voltage value.Current voltage value signal is sent to by isolating device 603
AC-DC converter 602, AC-DC converter 602 obtains the output voltage of corresponding charger according to battery current voltage value, control
Switching power circuit 604 processed generates corresponding output voltage and exported by VBUS ports.
It is understood that in embodiments of the present invention, AC-DC converter can also be substituted using dc-dc
602.When substituting AC-DC converter 602 using dc-dc, isolating device 603 can be saved accordingly.In DC-DC conversions
Feedback circuit is set between device and PWM feedback circuit 601, battery current voltage value is fed back to DC-DC by feedback circuit.
The embodiment of the present invention additionally provides another charging method, and reference picture 7 is carried out specifically below by way of specific steps
It is bright.
Step S701, when receiving the signal for representing battery current voltage value, obtains the battery current voltage value.
In specific implementation, the signal for the expression battery current voltage value that charger is received can be the first PWM ripples letter
Number, the dutycycle of the first PWM ripple signals is corresponding with battery current voltage value.Can by obtain the first PWM ripples dutycycle, root
According to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, battery current voltage value is obtained.
In embodiments of the present invention, the detailed process for obtaining battery current voltage value is referred to the above embodiment of the present invention
In step S101, here is omitted.
Step S702, according to the battery current voltage value, adjusts the output voltage of charger.
In specific implementation, after battery current voltage value is got, can by the battery current voltage value got with
Default voltage difference is added, and the output voltage after obtain and value is adjusted as charger.
In embodiments of the present invention, the adjustment process of the output voltage of charger is referred in the above embodiment of the present invention
Step S102, here is omitted.
The embodiments of the invention provide a kind of charging device, Fig. 2 is referred to, including：First acquisition unit and first
Adjustment unit, wherein：
First acquisition unit, for when receiving the signal for representing battery current voltage value, obtaining the battery current
Magnitude of voltage；
First adjustment unit, for according to the battery current voltage value, adjusting the output voltage of charger.
In specific implementation, the first acquisition unit can be used for receiving the first PWM ripples, obtain the first PWM ripples
Dutycycle, according to the corresponding relation of default magnitude of voltage and PWM ripple dutycycles, obtain the battery current voltage value, it is described
The dutycycle of first PWM ripples is corresponding with the battery current voltage value.
In specific implementation, first adjustment unit can be used for the battery current voltage value and default voltage
Difference value, and it regard obtain and value as the output voltage after charger adjustment.
The embodiment of the present inventionization provides a kind of charger, is referred to Fig. 3, including：PWM feedback circuit and voltage turn
Parallel operation, wherein：
The PWM feedback circuit, suitable for receiving the first PWM ripples, obtains the corresponding battery current voltage of the first PWM ripples
Value；
The electric pressure converter, suitable for according to the battery current voltage value, adjusting the output voltage of charger.
In specific implementation, the PWM feedback circuit includes：Sample circuit, suitable for being adopted to the first PWM ripples
Sample, to obtain the dutycycle of the first PWM ripples.
In specific implementation, the sample circuit includes adc circuit.
In specific implementation, the PWM feedback circuit includes：Low pass filter；With the ADC of the low pass filter coupled
Or operational amplifier.
In specific implementation, the low pass filter include it is following any one：Low-pass first order filter, step low-pass filter
Ripple device.
In specific implementation, the electric pressure converter is AC-DC converter or dc-dc.
In specific implementation, when the electric pressure converter be AC-DC converter when, the AC-DC converter with it is described
Isolator is set between PWM feedback circuit, suitable for the AC-DC converter is isolated with the PWM feedback circuit physical.
In specific implementation, the isolator is LMDS Light Coupled Device.
The embodiment of the present invention additionally provides a kind of charging method of charging equipment, reference picture 8, below by way of specific steps
It is described in detail.
Step S801, obtains battery current voltage value.
Step S802, the signal for representing the battery current voltage value is sent to charger.
In an embodiment of the present invention, the signal for the expression battery current voltage value that charging equipment is sent is certain duty
First PWM ripples of ratio.PWM ripple generating means are set in charging equipment, according to default magnitude of voltage and PWM ripple dutycycles
Battery current voltage value, is converted into the first PWM ripples of duty ratio corresponding by PWM ripples generating means by corresponding relation, and by
One PWM ripples are sent to charger.In other embodiments of the present invention, the expression battery current voltage value that charging equipment is sent
Signal can also be the signal of other forms, not repeat herein.
In an embodiment of the present invention, the PWM ripples generating means set in charging equipment include comparator.Comparator leads to
The magnitude of voltage for comparing two input inputs is crossed, corresponding high level or low level is exported.According to default magnitude of voltage and PWM ripples
The corresponding relation of dutycycle, obtains the dutycycle of the corresponding first PWM ripples of battery current voltage value.The first input end of comparator
Input sawtooth waveforms, the second input input a corresponding magnitude of voltage V1, by mutually in the same time V1 in the corresponding electricity of sawtooth waveforms
Pressure value is compared, output high level or low level.By adjusting magnitude of voltage V1, you can produce duty ratio corresponding by comparator
The first PWM ripples.
In an embodiment of the present invention, magnitude of voltage V1 and PWM ripple dutycycles corresponding relation can be pre-established, for example,
Corresponding PWM ripples dutycycle is 70% during magnitude of voltage V1=1.4V, and corresponding PWM ripples dutycycle is during magnitude of voltage V1=1.2V
60% etc., thus, when getting the dutycycle of the corresponding first PWM ripples of charging equipment battery current voltage value, comparator
The second input input default magnitude of voltage V1=1.4V, so as to generate the first PWM ripples that dutycycle is 70%.
For example, for mobile terminals such as mobile phones, the voltage of the lithium battery used or other kinds of battery is general not
5V, generally 4.2V or 4.35V can be exceeded.In normal work, the minimum voltage of battery is typically not less than 3V.5V pairs of setting
The PWM ripples dutycycle answered is that the corresponding PWM ripples dutycycles of 100%, 3V are 20%, then battery current voltage value VBATCorresponding PWM
Ripple dutycycle is Duty=(VBAT- 3)/(5-3) * 80%+20%.
Battery current voltage value is VBAT=4V, then the corresponding PWM ripples dutycycle of battery current voltage value is Duty=(4-
3)/(5-3) * 80%+20%=60%.It can be seen from default magnitude of voltage V1 and the corresponding relation of PWM ripple dutycycles, V1=
Comparator produces the PWM ripples that dutycycle is 60% during 1.2V, therefore, the second input input 1.2V of comparator, so as to
The first PWM ripples that dutycycle is 60% are produced, and are sent to charger.
The first PWM ripples that charging equipment is sent are received by PWM wave receiving devices, and get accounting for for the first PWM ripples
Sky is than being 60%.According to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, charger can know charging equipment
Battery current voltage value is 4V.
It is understood that battery current voltage value and the corresponding relation of PWM ripple dutycycles are not limited in the present invention
The corresponding relation provided in embodiment is stated, the corresponding relation that there can also be other forms is not repeated herein.
Reference picture 9, the embodiment of the present invention additionally provides a kind of device to be charged 90, including：Second acquisition unit 901 and
Second transmitting element 902, wherein：
Second acquisition unit 901, for obtaining battery current voltage value；
Second transmitting element 902, for the signal for representing the battery current voltage value to be sent to charger.
In specific implementation, second transmitting element 902 is used to send the first PWM ripples to charger, and described first
The dutycycle of PWM ripples is corresponding with the battery current voltage value.
The embodiment of the present invention additionally provides a kind of charging equipment, including PWM output circuits, and the PWM output circuits are fitted
In the battery current voltage value for obtaining charging equipment, the battery current voltage value is converted into the first of duty ratio corresponding
PWM ripples, and send to charger.
In specific implementation, the PWM output circuits include：Comparator；Occur with the sawtooth waveforms that the comparator is coupled
Device.
Reference picture 10, gives a kind of structural representation of PWM output circuits in one embodiment of the invention, including compares
Device A2 and saw-toothed wave generator.The "-" input of saw-toothed wave generator and comparator A2 is coupled, and is produced after sawtooth waveforms, will be sawed
Tooth ripple is sent to comparator A2.The comparator A2 corresponding voltage value signal V1 of "+" input input battery current voltage value, leads to
Cross and compare A2 and can generate the first PWM ripples.
For example, corresponding PWM ripples dutycycle is 70% during magnitude of voltage V1=1.4V, it is corresponding during magnitude of voltage V1=1.2V
PWM ripples dutycycle is 60%.Battery current voltage value is VBAT=4V, then the corresponding PWM ripples dutycycle of battery current voltage value be
Duty=(4-3)/(5-3) * 80%+20%=60%.Can according to the corresponding relation of default magnitude of voltage V1 and PWM ripple dutycycles
Know, comparator produces the PWM ripples that dutycycle is 60% during V1=1.2V, therefore, the second input input 1.2V of comparator, from
And the first PWM ripples that dutycycle is 60% can be produced, and send to charger.
In other embodiments of the present invention, PWM output circuits can also be that other can change battery current voltage value
Into the device of the first PWM ripples of duty ratio corresponding, do not repeat herein.
The embodiment of the present invention additionally provides another charging method, and reference picture 11 is carried out detailed below by way of specific steps
Explanation.
Step S1101, obtains battery current voltage value.
Step S1102, the signal for representing the battery current voltage value is sent.
In embodiments of the present invention, the signal for representing battery current voltage value can be the first PWM ripples, the first PWM ripples
Dutycycle is corresponding with battery current voltage value.
In embodiments of the present invention, step S1101~step S1102 is referred to step S801~step S802, herein
Repeat no more.
The embodiment of the present invention additionally provides a kind of charging device, is referred to Fig. 9, including：Second acquisition unit and
Two transmitting elements, wherein：
Second acquisition unit, for obtaining battery current voltage value；
Second transmitting element, for the signal for representing the battery current voltage value to be sent.
In specific implementation, second transmitting element can be used for sending in the first PWM ripples, the first PWM ripples
Dutycycle is corresponding with the battery current voltage value.
The embodiment of the present invention additionally provides a kind of electronic equipment, including：PWM output circuits, the PWM output circuits are suitable to
Battery current voltage value is obtained, the battery current voltage value is converted into the first PWM ripples of duty ratio corresponding and sent.
In specific implementation, the PWM output circuits include：Comparator；Occur with the sawtooth waveforms that the comparator is coupled
Device.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
To instruct the hardware of correlation to complete by program, the program can be stored in a computer-readable recording medium, storage
Medium can include：ROM, RAM, disk or CD etc..
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, are not departing from this
In the spirit and scope of invention, it can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
The scope of restriction is defined.
Claims (40)
1. a kind of charging method, it is characterised in that including：
When receiving the signal of expression battery current voltage value of charging equipment transmission, the battery current voltage is obtained
Value；
According to the battery current voltage value, the output voltage of charger is adjusted；
The signal for including current nominal output current value is sent to the charging equipment so that the charging equipment is according to institute
Current nominal output current value adjustment preset charged current value is stated, and is charged with the charging current value after adjustment, wherein：Institute
State the charging current value after adjustment and be equal to the current nominal output current value；The letter for including current nominal output current value
Number send in the following way：When voltage of the charger on DP ports are detected reaches default higher than the duration of preset voltage value
When long, the DM ports of holding state short circuit and the DP ports are disconnected, and send described comprising current nominal output current value
Signal.
2. charging method as claimed in claim 1, it is characterised in that the expression battery for receiving charging equipment transmission
During the signal of current voltage value, the battery current voltage value is obtained, including：
Receive the first PWM ripples of charging equipment transmission, dutycycle and the battery current voltage value of the first PWM ripples
Correspondence；
The dutycycle of the first PWM ripples is obtained, according to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, institute is obtained
State battery current voltage value.
3. charging method as claimed in claim 1, it is characterised in that described according to the battery current voltage value, adjustment is filled
The output voltage of electrical equipment, including：The battery current voltage value is added with default voltage difference, and obtain and value is made
Output voltage after being adjusted for the charger.
4. a kind of charging device, it is characterised in that including：
First acquisition unit, for when receiving the signal of expression battery current voltage value of charging equipment transmission, obtaining
The battery current voltage value；
First adjustment unit, for according to the battery current voltage value, adjusting the output voltage of charger；
Transmitting element, for sending the signal for including current nominal output current value to the charging equipment so that described to treat
Charging equipment adjusts preset charged current value according to the current nominal output current value, and is entered with the charging current value after adjustment
Row charging, wherein：Charging current value after the adjustment is equal to the current nominal output current value；It is described to include current nominal
The signal of output current value is sent in the following way：Voltage of the charger on DP ports are detected is higher than preset voltage value
When duration reaches preset duration, the DM ports of holding state short circuit and the DP ports are disconnected, and send described comprising current
The signal of output-current rating value.
5. charging device as claimed in claim 4, it is characterised in that the first acquisition unit is used for：Receive to be charged
The first PWM ripples that equipment is sent, the dutycycle of the first PWM ripples is corresponding with the battery current voltage value；Obtain described
The dutycycle of one PWM ripples, according to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, obtains the battery current voltage
Value.
6. charging device as claimed in claim 4, it is characterised in that first adjustment unit is used for the battery is current
Magnitude of voltage is added with default voltage difference, and regard obtain and value as the output voltage after charger adjustment.
7. a kind of charger, it is characterised in that including：PWM feedback circuit, electric pressure converter and PWM ripple generating means, its
In：
The PWM feedback circuit, suitable for receiving the first PWM ripples that charging equipment is sent, obtains the first PWM ripples corresponding
The battery current voltage value of the charging equipment；
The electric pressure converter, suitable for according to the battery current voltage value, adjusting the output voltage of charger；
The PWM ripples generating means, suitable for the corresponding relation according to default current value and PWM ripple dutycycles, charger is worked as
Preceding specified output current value is converted into the 2nd PWM ripples of duty ratio corresponding, and the 2nd PWM ripples are sent to be charged set
It is standby so that the charging equipment obtains working as the charger according to the corresponding relation of default current value and the 2nd PWM ripples
Preceding specified output current value, preset charged electric current is adjusted according to the current nominal output current value, and with the charging after adjustment
Electric current is charged, wherein：The current value of charging current after the adjustment is equal to the current nominal output current value；It is described
2nd PWM ripples are sent in the following way：Voltage of the charger on DP ports are detected higher than preset voltage value when be up to
During to preset duration, the DM ports of holding state short circuit and the DP ports are disconnected, and send the 2nd PWM ripples.
8. charger as claimed in claim 7, it is characterised in that the PWM feedback circuit includes：Sample circuit, suitable for pair
The first PWM ripples are sampled, to obtain the dutycycle of the first PWM ripples.
9. charger as claimed in claim 8, it is characterised in that the sample circuit includes adc circuit.
10. charger as claimed in claim 7, it is characterised in that the PWM feedback circuit includes：Low pass filter；With institute
State the ADC or operational amplifier of low pass filter coupled.
11. charger as claimed in claim 10, it is characterised in that the low pass filter include it is following any one：One
Rank low pass filter, second-order low-pass filter.
12. charger as claimed in claim 7, it is characterised in that the electric pressure converter is AC-DC converter or DC-DC
Converter.
13. charger as claimed in claim 12, it is characterised in that when the electric pressure converter is AC-DC converter, institute
State and be provided with isolator between AC-DC converter and the PWM feedback circuit, suitable for by the AC-DC converter and the PWM
Feedback circuit physical isolation.
14. charger as claimed in claim 13, it is characterised in that the isolator is LMDS Light Coupled Device.
15. a kind of charging method, it is characterised in that including：
When receiving the signal for representing battery current voltage value, the battery current voltage value is obtained；
According to the battery current voltage value, the output voltage of charger is adjusted；
The signal for including current nominal output current value is sent to charging equipment so that the charging equipment is worked as according to described
Preceding specified output current value adjustment preset charged current value, and charged with the charging current value after adjustment, wherein：It is described to adjust
Charging current value after whole is equal to the current nominal output current value；
The signal comprising current nominal output current value is sent in the following way：Charger is on DP ports are detected
When voltage reaches preset duration higher than the duration of preset voltage value, the DM ports of holding state short circuit are broken with the DP ports
Open, and the signal of current nominal output current value is included described in transmission.
16. charging method as claimed in claim 15, it is characterised in that described ought receive represents battery current voltage value
During signal, the battery current voltage value is obtained, including：The first PWM ripples are received, the dutycycle of the first PWM ripples is obtained,
According to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, the battery current voltage value is obtained.
17. charging method as claimed in claim 15, it is characterised in that described according to the battery current voltage value, adjustment
The output voltage of charger, including：The battery current voltage value is added with default voltage difference, and by obtain and value
Output voltage after being adjusted as the charger.
18. a kind of charging device, it is characterised in that including：
First acquisition unit, for when receiving the signal for representing battery current voltage value, obtaining the battery current voltage
Value；
First adjustment unit, for according to the battery current voltage value, adjusting the output voltage of charger；
Transmitting element, for sending the signal for including current nominal output current value to charging equipment so that described to be charged
Equipment adjusts preset charged current value according to the current nominal output current value, and is filled with the charging current value after adjustment
Electricity, wherein：Charging current value after the adjustment is equal to the current nominal output current value；It is described to include current nominal output
The signal of current value is sent in the following way：Voltage of the charger on DP ports are detected is higher than the duration of preset voltage value
When reaching preset duration, the DM ports of holding state short circuit and the DP ports are disconnected, and send described comprising current nominal
The signal of output current value.
19. charging device as claimed in claim 18, it is characterised in that the first acquisition unit is used to receive the first PWM
Ripple, obtains the dutycycle of the first PWM ripples, according to default magnitude of voltage and the corresponding relation of PWM ripple dutycycles, obtains described
Battery current voltage value, the dutycycle of the first PWM ripples is corresponding with the battery current voltage value.
20. charging device as claimed in claim 18, it is characterised in that first adjustment unit is used to work as on the battery
Preceding magnitude of voltage is added with default voltage difference, and regard obtain and value as the output voltage after charger adjustment.
21. a kind of charger, it is characterised in that including：PWM feedback circuit, electric pressure converter and PWM ripple generating means, its
In：
The PWM feedback circuit, suitable for receiving the first PWM ripples, obtains the corresponding battery current voltage value of the first PWM ripples；
The electric pressure converter, suitable for according to the battery current voltage value, adjusting the output voltage of charger；
The PWM ripples generating means, suitable for the corresponding relation according to default current value and PWM ripple dutycycles, charger is worked as
Preceding specified output current value is converted into the 2nd PWM ripples of duty ratio corresponding, and the 2nd PWM ripples are sent to be charged set
It is standby so that the charging equipment obtains working as the charger according to the corresponding relation of default current value and the 2nd PWM ripples
Preceding specified output current value, preset charged electric current is adjusted according to the current nominal output current value, and with the charging after adjustment
Electric current is charged, wherein：The current value of charging current after the adjustment is equal to the current nominal output current value；It is described
2nd PWM ripples are sent in the following way：Voltage of the charger on DP ports are detected higher than preset voltage value when be up to
During to preset duration, the DM ports of holding state short circuit and the DP ports are disconnected, and send the 2nd PWM ripples.
22. charger as claimed in claim 21, it is characterised in that the PWM feedback circuit includes：Sample circuit, is suitable to
The first PWM ripples are sampled, to obtain the dutycycle of the first PWM ripples.
23. charger as claimed in claim 22, it is characterised in that the sample circuit includes adc circuit.
24. charger as claimed in claim 21, it is characterised in that the PWM feedback circuit includes：Low pass filter；With
The ADC or operational amplifier of the low pass filter coupled.
25. charger as claimed in claim 24, it is characterised in that the low pass filter include it is following any one：One
Rank low pass filter, second-order low-pass filter.
26. charger as claimed in claim 21, it is characterised in that the electric pressure converter is AC-DC converter or DC-DC
Converter.
27. charger as claimed in claim 26, it is characterised in that when the electric pressure converter is AC-DC converter, institute
State and be provided with isolator between AC-DC converter and the PWM feedback circuit, suitable for by the AC-DC converter and the PWM
Feedback circuit physical isolation.
28. charger as claimed in claim 27, it is characterised in that the isolator is LMDS Light Coupled Device.
29. a kind of charging method of charging equipment, it is characterised in that including：
Obtain battery current voltage value；
The signal for representing the battery current voltage value is sent to charger；
The signal for including charger current nominal output current value that the charger is sent is received, it is defeated according to the current nominal
Go out current value adjustment preset charged electric current, and charged with the charging current value after adjustment, wherein：Charging after the adjustment
Current value is equal to the current nominal output current value；The signal comprising current nominal output current value is in the following way
Send：When voltage of the charger on DP ports are detected reaches preset duration higher than the duration of preset voltage value, it will treat
The DM ports of machine state short circuit are disconnected with the DP ports, and the signal of current nominal output current value is included described in transmission.
30. charging method as claimed in claim 29, it is characterised in that the signal of the expression battery current voltage value
For the first PWM ripples, the dutycycle of the first PWM ripples is corresponding with the battery current voltage value.
31. a kind of device to be charged, it is characterised in that including：
Second acquisition unit, for obtaining battery current voltage value；
Second transmitting element, for the signal for representing the battery current voltage value to be sent to charger；
Second adjustment unit, for receiving the signal for including charger current nominal output current value that the charger is sent,
Preset charged electric current is adjusted according to the current nominal output current value, and charged with the charging current value after adjustment, its
In：Charging current value after the adjustment is equal to the current nominal output current value；It is described to include current nominal output current
The signal of value is sent in the following way：Voltage of the charger on DP ports are detected is higher than the duration of preset voltage value
When reaching preset duration, the DM ports of holding state short circuit and the DP ports are disconnected, and send described comprising current nominal
The signal of output current value.
32. device to be charged as claimed in claim 31, it is characterised in that second transmitting element is used for the first PWM
Ripple is sent to charger, and the dutycycle of the first PWM ripples is corresponding with the battery current voltage value.
33. a kind of charging equipment, it is characterised in that including：PWM output circuits, PWM wave receiving devices, the PWM outputs electricity
Road is suitable to the battery current voltage value for obtaining charging equipment, and the battery current voltage value is converted into the of duty ratio corresponding
One PWM ripples, and send to charger；The PWM reception devices, suitable for receiving the 2nd PWM ripples, obtain the duty of the 2nd PWM ripples
Than according to default current value and the corresponding relation of PWM ripple dutycycles, obtaining the current nominal output current value of charger；Institute
Charging equipment is stated, is further adapted for after the current nominal output current value of the charger is got, according to the charger
Current nominal output current value preset charged electric current is adjusted, and charged with the charging current value after adjustment, its
In：Charging current value after the adjustment is equal to the current nominal output current value；The 2nd PWM ripples are in the following way
Send：When voltage of the charger on DP ports are detected reaches preset duration higher than the duration of preset voltage value, it will treat
The DM ports of machine state short circuit disconnect with the DP ports, and send the 2nd PWM ripples.
34. charging equipment as claimed in claim 33, it is characterised in that the PWM output circuits include：Comparator；With
The saw-toothed wave generator of the comparator coupling.
35. a kind of charging method, it is characterised in that including：
Obtain battery current voltage value；
The signal for representing the battery current voltage value is sent；
The signal for including charger current nominal output current value that charger is sent is received, electricity is exported according to the current nominal
Flow valuve adjusts preset charged electric current, and is charged with the charging current value after adjustment, wherein：Charging current after the adjustment
Value is equal to the current nominal output current value；The signal comprising current nominal output current value is sent out in the following way
Send：When voltage of the charger on DP ports are detected reaches preset duration higher than the duration of preset voltage value, by holding state
The DM ports of short circuit are disconnected with the DP ports, and the signal of current nominal output current value is included described in transmission.
36. charging method as claimed in claim 35, it is characterised in that the signal of the expression battery current voltage value
For the first PWM ripples, the dutycycle of the first PWM ripples is corresponding with the battery current voltage value.
37. a kind of electronic installation, it is characterised in that including：
Second acquisition unit, for obtaining battery current voltage value；
Second transmitting element, for the signal for identifying the battery current voltage value to be sent；
Second acquisition unit, the signal for including charger current nominal output current value for receiving charger transmission, according to
The current nominal output current value adjusts preset charged electric current, and is charged with the charging current value after adjustment, wherein：Institute
State the charging current value after adjustment and be equal to the current nominal output current value；The letter for including current nominal output current value
Number send in the following way：When voltage of the charger on DP ports are detected reaches default higher than the duration of preset voltage value
When long, the DM ports of holding state short circuit and the DP ports are disconnected, and send described comprising current nominal output current value
Signal.
38. electronic installation as claimed in claim 37, it is characterised in that second transmitting element is used for the first PWM ripples
Send, the dutycycle of the first PWM ripples is corresponding with the battery current voltage value.
39. a kind of electronic equipment, it is characterised in that including：PWM output circuits, PWM wave receiving devices, the PWM output circuits
Suitable for obtaining battery current voltage value, the battery current voltage value is converted into the first PWM ripples of duty ratio corresponding and sent；
The PWM reception devices, suitable for receiving the 2nd PWM ripples, obtain the dutycycle of the 2nd PWM ripples, according to default current value and PWM
The corresponding relation of ripple dutycycle, obtains the current nominal output current value of charger；The electronic equipment, is further adapted for getting
After the current nominal output current value of the charger, filled according to the current nominal output current value of the charger to default
Electric current is adjusted, and is charged with the charging current value after adjustment, wherein：Charging current value after the adjustment is equal to
The current nominal output current value；The 2nd PWM ripples are sent in the following way：The charger is detecting DP ports
On voltage when reaching preset duration higher than the duration of preset voltage value, by the DM ports of holding state short circuit and the DP ports
Disconnect, and send the 2nd PWM ripples.
40. electronic equipment as claimed in claim 39, it is characterised in that the PWM output circuits include：Comparator；With institute
State the saw-toothed wave generator of comparator coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410856068.XA CN104467123B (en) | 2014-12-31 | 2014-12-31 | Charging method, device, charger, electronic installation and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410856068.XA CN104467123B (en) | 2014-12-31 | 2014-12-31 | Charging method, device, charger, electronic installation and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104467123A CN104467123A (en) | 2015-03-25 |
| CN104467123B true CN104467123B (en) | 2017-08-08 |
Family
ID=52912700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410856068.XA Active CN104467123B (en) | 2014-12-31 | 2014-12-31 | Charging method, device, charger, electronic installation and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104467123B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11476684B2 (en) * | 2016-08-29 | 2022-10-18 | Huawei Technologies Co., Ltd. | Charging protection method, terminal, and charger |
| CN117713267B (en) * | 2023-06-30 | 2024-12-13 | 荣耀终端有限公司 | A wireless charging control method, device and system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7202634B2 (en) * | 2001-08-17 | 2007-04-10 | O2Micro International Limited | Voltage mode, high accuracy battery charger |
| JP4374463B2 (en) * | 2006-12-26 | 2009-12-02 | 日本電波工業株式会社 | Oscillation frequency control circuit |
| CN101227098B (en) * | 2007-01-19 | 2012-01-18 | 鸿富锦精密工业（深圳）有限公司 | Charging apparatus and method |
| CN201113517Y (en) * | 2007-09-19 | 2008-09-10 | 中兴通讯股份有限公司 | Charging circuit with self-regulation function |
| US7982427B2 (en) * | 2008-05-09 | 2011-07-19 | Renault S.A.S. | Voltage measurement of high voltage batteries for hybrid and electric vehicles |
| CN104242365B (en) * | 2013-06-19 | 2019-01-04 | 深圳富泰宏精密工业有限公司 | Portable electronic device and application method |
| CN203445656U (en) * | 2013-09-02 | 2014-02-19 | 四川川奇机电有限责任公司 | Charging circuit and charger with the charging circuit |
-
2014
- 2014-12-31 CN CN201410856068.XA patent/CN104467123B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104467123A (en) | 2015-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104467116B (en) | Charging method, device and charger | |
| CN104485724B (en) | The charging method of charging equipment, device, charging equipment and charging system | |
| CN104467135B (en) | The charging method of charging equipment, device, charging equipment and charging system | |
| CN104467121B (en) | Charging method, device, charger, charging equipment and charging system | |
| CN104467120B (en) | Charging equipment and its charging method, device, electronic equipment and charging system | |
| CN104467139B (en) | charging method, device and charger | |
| CN103682498B (en) | A kind of charging method and electronic equipment | |
| CN104467117B (en) | Charging method, device and charger | |
| CN203135541U (en) | Apparatus with wireless mobile charging function | |
| CN110741528A (en) | Battery power supply circuit, equipment to be charged and charging control method | |
| CN102957193A (en) | Charge management method, device and system | |
| CN105703429A (en) | Charging method, mobile terminal, charging device and system | |
| CN105098268B (en) | A kind of charging method and device of terminal | |
| CN101986502A (en) | Mobile phone battery charging circuit | |
| CN103746437A (en) | Rapid charging method and rapid charging device of portable power source | |
| CN102231769A (en) | Method for turning on mobile phone with over-discharged cell and mobile phone | |
| CN104333091B (en) | Charge capacity display control method based on mobile terminal, system and mobile terminal | |
| CN104467123B (en) | Charging method, device, charger, electronic installation and equipment | |
| CN209709702U (en) | A kind of charging control circuit, electronic equipment | |
| CN109066885B (en) | Charger and charging method of the charger | |
| CN104467122B (en) | Charging method, device, charger, electronic installation and equipment | |
| CN205407320U (en) | a charger | |
| CN104638726A (en) | Charging voltage control method and control system based on mobile terminal | |
| CN204290441U (en) | Wireless charger | |
| CN105915029A (en) | Power supply conversion efficiency selection circuit, method and mobile power supply thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |