CN106712210A - Power equipment and charging control method therefor - Google Patents
Power equipment and charging control method therefor Download PDFInfo
- Publication number
- CN106712210A CN106712210A CN201710083063.1A CN201710083063A CN106712210A CN 106712210 A CN106712210 A CN 106712210A CN 201710083063 A CN201710083063 A CN 201710083063A CN 106712210 A CN106712210 A CN 106712210A
- Authority
- CN
- China
- Prior art keywords
- current
- power
- supply device
- adapter
- threshold
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005611 electricity Effects 0.000 claims description 48
- 230000001939 inductive effect Effects 0.000 claims description 29
- 238000005070 sampling Methods 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 6
- 230000007812 deficiency Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012358 sourcing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- H02J7/0077—
-
- 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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses power equipment and a charging control method therefor. The method gives consideration to the control and adjustment of an adapter under various conditions of insufficient power supply, carries out the judgment of an input voltage under the conditions of insufficient power supply, adjusts a current limit value of a current limiting switch, and achieves the discrimination and control in a mode of charging-while-discharging according to the judgment whether the current limit value is enough for the providing of a load current or not. The method can provide protection measures under various working conditions and the special working conditions that an adapter load is too large in switching-off power because of insufficient power supply.
Description
Technical field
The present invention relates to charging technique field, more specifically to a kind of power-supply device and its charge control method.
Background technology
In the prior art, generally power-supply device is powered or is charged using adapter.As shown in figure 1, being prior art
Power-supply device, including power stage circuit and current limiting switch, the input current of power-supply device of being sampled by current detection circuit, electricity
Flow control circuit adjusts current limiting switch according to the input current, while drive control circuit is controlled, the drive control electricity
Road as the power stage circuit control circuit.The power-supply device of prior art is charged using adapter, in adaptation
In the case of device power supply capacity deficiency, the output voltage VIN of adapter can be caused to drop to very low, adaptation when charging sourcing current is excessive
Device can always work at over-current state, adapter excess temperature easily occur.Part adapter may be pulled down to under-voltage protection threshold value
Hereinafter, there is adapter to switch repeatedly so that the phenomenon that power-supply device is also switched repeatedly, it is impossible to normal discharge and recharge.
Basic functional principle is as follows：The electric current needed for adapter fan-out capability disclosure satisfy that power-supply device, adapter performance
Go out constant pressure (CV) characteristic, be normal operating conditions, as shown in Figure 2；When the power supply capacity of adapter is not enough to maintain power-supply device
During required electric current, adapter shows constant current (CC) characteristic, as shown in figure 3, its output voltage VIN reductions, adapter may
This state is always worked at, overheat protector is triggered；Adapter output voltage of the part without constant current CC characteristics is less than certain threshold value
Afterwards, can automatically shut down, be reopened after waiting for a period of time, such power-supply device can also follow shut-off to be then turned on, occur repeatedly
The phenomenon of switch, as shown in Figure 4.
More than in the prior art, in the case of electricity shortage, easily occurring cannot normal work, that is, the excess temperature that sets out guarantor
Shield or repeated switching, safeguard measure are more single, it is difficult to suitable for many particular job states, are unfavorable for power supply or discharge and recharge
Carrying out.
The content of the invention
In view of this, the present invention proposes a kind of power-supply device and its charge control method, the power supply energy according to adapter
Power, the working condition of regulation power supply equipment can be loaded because electricity shortage in different working condition and adapter, draw electricity excessive etc.
Under particular job state, there is provided safeguard measure.
According to a kind of power-supply device of the invention, including：Power stage circuit, current limiting switch and control circuit, described control
Control end of the circuit processed respectively with the power stage circuit and current limiting switch is connected, and the control circuit is by power-supply device of sampling
Input current adjust current limiting switch, the control circuit controls the Power convert of power stage circuit, charged with to battery；
There is the situation of adapter electricity shortage under the pattern that adapter charges to the power-supply device list：The power supply
The input voltage of equipment declines, and when the input voltage drops to first threshold, then adjusts described by the control circuit
Power stage circuit, to reduce inductive current, so as to reduce charging current of the power stage circuit to battery.
Further, the power-supply device is charged in adapter, under power-supply device pattern simultaneously to load discharge, hair
Adapter electricity shortage is given birth to provide battery charge and load current simultaneously, but more than the situation of load current：The electricity
The input voltage of source device declines, and when the input voltage drops to first threshold, then adjusts institute by the control circuit
Power stage circuit is stated, to reduce inductive current, so as to reduce charging current of the power stage circuit to battery.
Further, the power-supply device is charged in adapter, under power-supply device pattern simultaneously to load discharge, hair
Adapter electricity shortage is given birth to provide the situation of load current：The input voltage of the power-supply device declines, when the input electricity
When first threshold is down in pressure, then the power stage circuit is adjusted by the control circuit, make inductive current be zero, so that
Must be zero to the charging current of battery.
Further, when the input voltage is less than Second Threshold, and its duration exceedes threshold time, then described
By the current limliting baseline pull-down of the current limiting switch, the Second Threshold is higher than first threshold to control circuit, if the input voltage
Second Threshold is still below, and its duration exceedes threshold time, then continue to reduce the current limliting benchmark of the current limiting switch, until
Input voltage is reduced to zero higher than the Second Threshold or current limliting benchmark.
Further, when described input voltage is less than three threshold values, the 3rd described threshold value is less than described first
Threshold value, then judge that adapter disconnects, and will flow the step of current limliting baseline pull-down one of switch, and current current limliting benchmark is latched,
After reopening, if adapter power supply capacity deficiency causes input voltage less than the 3rd threshold value, judge that adapter disconnects again,
Continue to drop one step lower on the current limliting benchmark for having latched, until adapter is no longer identified the current limliting base of shut-off or current limiting switch
Standard is reduced to zero；If the duration that adapter disconnects exceedes setting time, the power-supply device exits charge mode, and will
The current limliting baseline restoration of current limiting switch is to maximum.
Further, when the input voltage is by rising less than Second Threshold and when reaching Second Threshold, then the control
Circuit continues the current limliting baseline pull-down certain amplitude of the current limiting switch.
Further, adapter fan-out capability is enough to provide electricity under the pattern that adapter charges to the power-supply device list
Electric current needed for source device：Input voltage is more than Second Threshold, then control current limiting switch to be in fully on state, current limiting switch
Current limliting benchmark is maximum；The control circuit control power stage circuit is charged with the charging current for setting to battery.
Further, the power-supply device charged in adapter, under power-supply device pattern simultaneously to load discharge, fitted
When orchestration fan-out capability is enough to provide power-supply device and both required electric current sums of load：If a. battery charge and load are electric
Stream sum is less than the cut-off current of current limiting switch, then adapter is charged with the charging current of the setting of power-supply device to battery, while
Load current is provided；If b. battery charge and load current are adjusted higher than the cut-off current of current limiting switch by controlling circuit
Economize on electricity sense average current, to reduce battery charge, makes input current maintain cut-off current；When battery charge drops to
After 0, load current remains above maximum cut-off current, then current limiting switch triggering overcurrent protection, and after threshold time, cut-off current-limiting is opened
Close.
Further, described control circuit includes current-limiting control circuit, control drive circuit and inductive current control electricity
Road, the input current of described current-limiting control circuit according to the voltage sampling signal for characterizing input voltage and to flowing through current limiting switch
Sample rate current adjust the cut-off current of current limiting switch, to adjust input current；Described control drive circuit and power stage electricity
The control end connection on road, by the conducting state for adjusting the switching tube in power stage circuit；Inductive current control circuit is used to lead to
The inductive current crossed in control drive circuit regulation power stage circuit.
Further, described control circuit also includes temperature-control circuit, when the temperature of power-supply device exceedes setting value
When, then temperature-control circuit controls circuit reduction inductive current by inductive current, to reduce the charging current of battery, makes power supply
Device temperature reduction；Under discharge mode, when power-supply device temperature exceedes threshold value, inductive current is also reduced so that output voltage
Decline, reduce power output, to control temperature further up.
According to a kind of charge control method of the invention, comprise the following steps：
There is the situation of adapter electricity shortage under the pattern that adapter charges to the power-supply device list：The power supply
The input voltage of equipment declines, and when the input voltage drops to first threshold, then adjusts described by the control circuit
Power stage circuit, to reduce inductive current, so as to reduce charging current of the power stage circuit to battery.
The power-supply device charged in adapter, under power-supply device pattern simultaneously to load discharge, adapter occur
Electricity shortage to provide battery charge and load current simultaneously, but more than the situation of load current：The power-supply device
Input voltage declines, and when the input voltage drops to first threshold, then adjusts the power stage by the control circuit
Circuit, to reduce inductive current, so as to reduce charging current of the power stage circuit to battery.
The power-supply device charged in adapter, under power-supply device pattern simultaneously to load discharge, adapter occur
Electricity shortage is providing the situation of load current：The input voltage of the power-supply device declines, when the input voltage drops to
During first threshold, then the power stage circuit is adjusted by the control circuit, make inductive current be zero, so as to battery
Charging current be zero.
Further, when the input voltage is less than Second Threshold, and its duration exceedes threshold time, then described
By the current limliting baseline pull-down of the current limiting switch, the Second Threshold is higher than first threshold to control circuit, if the input voltage
Second Threshold is still below, and its duration exceedes threshold time, then continue to reduce the current limliting benchmark of the current limiting switch, until
Input voltage is reduced to zero higher than the Second Threshold or current limliting benchmark.
According to another power-supply device of the invention, including：Power stage circuit, current limiting switch and control circuit, it is described
Control end of the control circuit respectively with the power stage circuit and current limiting switch is connected, and the control circuit is set by power supply of sampling
Standby input current adjusts current limiting switch, and the control circuit controls the Power convert of power stage circuit, charged with to battery；
Adapter the power-supply device list is charged or the pattern put when filling under electricity shortage situation：
During startup, the current limliting benchmark of current limiting switch is stepped up from default minimum value, until input voltage drops to
One threshold value, then reduce a step by the current limliting benchmark of current limiting switch from currency, described if input voltage is still below first threshold
Current limliting benchmark reduces a step again, until the input voltage is reduced to zero higher than Second Threshold or the current limliting benchmark, described the
Two threshold values are higher than first threshold.
Further, in the case that adapter occurs switch repeatedly because of electricity shortage：During startup, input current limiting switch
Current limliting benchmark is stepped up from default minimum value, when there is adapter disconnection, current limliting benchmark is reduced into a step from currency,
And it is latched as the maximum of current limliting benchmark；When being restored electricity Deng adapter, the current limliting benchmark of current limiting switch is again from default
Minimum value is stepped up, but not more than previous latch maximum, if during occur again adapter disconnection, will most
Big value is updated to currency and reduces a step and latch；Until adapter no longer occur disconnect or the current limliting benchmark be reduced to zero.
The advantage of the scheme that current limliting benchmark is stepped up from minimum value is can quickly to find the maximum confession of adapter
Electric energy power, usually once or for several times starting can just find.
In sum, according to power-supply device of the present invention and its charge control method, it is contemplated that adapter is powered not various
Control and regulation in the case of foot, according to the judgement in the case of electricity shortage to input voltage so that adjust current limiting switch it
Cut-off current, and while in charging in discharge mode, whether be enough to provide load current according to cut-off current, distinguished control.This
Invention can be in different working condition and adapter load because electricity shortage, under drawing that electricity is excessive and waiting particular job state, there is provided protect
Shield measure.
Brief description of the drawings
Fig. 1 show the structural representation of power-supply device in the prior art；
Fig. 2 show view of the adapter to power-supply device normal power supply；
Fig. 3 show the view of adapter electricity shortage；
Fig. 4 show the view that adapter produces repeated switching；
Fig. 5 show the structural representation of power-supply device of the invention.
Specific embodiment
The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing, but the present invention is not restricted to these
Embodiment.The present invention covers any replacement made in the spirit and scope of the present invention, modification, equivalent method and scheme.
In order that the public has to the present invention thoroughly understanding, it is described in detail in present invention below preferred embodiment specific
Details, and description without these details can also completely understand the present invention for a person skilled in the art.
With reference to as figure 5 illustrates, based on the power-supply device shown in Fig. 5, including power stage circuit, current limiting switch and control circuit,
Control end of the described control circuit respectively with the power stage circuit and current limiting switch is connected, and the control circuit is by sampling
The input current of power-supply device adjusts current limiting switch, and the control circuit controls the Power convert of power stage circuit, with to electricity
Charge in pond.
Described control circuit includes current-limiting control circuit, control drive circuit and inductive current control circuit, described
Sampling electricity of the current-limiting control circuit according to the voltage sampling signal for characterizing input voltage and to flowing through the input current of current limiting switch
Stream adjusts the cut-off current of current limiting switch, to adjust the input current of current limiting switch；Described control drive circuit and power stage
The control end connection of circuit, by the conducting state for adjusting the switching tube in power stage circuit；Inductive current control circuit is used for
By controlling the inductive current in drive circuit regulation power stage circuit.Various situations are below divided to describe specific controlling party respectively
Method.
Single charge mode (adapter only charges the battery, not to load supplying)：
State one：The electric current needed for adapter fan-out capability is enough to provide power-supply device, adapter is operated in pressure constant state.
Obtain characterizing the voltage division signal of input voltage VIN using bleeder circuit sampling, the bleeder circuit is by resistance R1 and resistance R2
Be composed in series, the common port of resistance R1 and resistance R2 as bleeder circuit output end, the voltage division signal is more than characterizing second
During the reference voltage VREF1 of threshold value, then comparator 1 outputs signals to the current-limiting control circuit of current limiting switch, current-limiting control circuit
Current limiting switch Q1 is set to be in fully on state, the current limliting benchmark of current limiting switch is maximum；The output signal of amplifier 1 causes inductance
Average Current Control circuit function charges in the charging current that control drive circuit makes circuit to set to battery.
State two：When adapter power supply capacity is not enough, when power-supply device sourcing current is excessive, adapter output voltage decline and
When being operated in constant current state.When VIN drops to first threshold VINDROOP voltages, the instantaneous value on divider resistance R2 is equal to table
Levy the reference voltage VREF0 of first threshold, the output reduction of amplifier 1, inductive current control circuit rapid downward regulation inductance instruction electricity
Stream (i.e. expectation electric current), inductive current reduction, charging current reduction, this causes that adapter output voltage is unlikely to further to be drawn
It is low.Meanwhile, if VIN is less than VINDROOP+ Δ V voltages, VINDROOP+ Δs V is Second Threshold, the voltage on divider resistance R2
Value less than characterizing Second Threshold reference voltage VREF1, wherein VREF1 ＞ VREF0, and more than threshold time t, then current limiting switch
The current limliting benchmark of current limiting switch is reduced Δ I by current-limiting control circuit, and is latched；If VIN is still below VINDROOP+ Δ V,
Voltage on divider resistance R2 is again below reference voltage VREF1, after same duration t, the limit that current limiting switch has been latched
Stream benchmark reduces Δ I again；By that analogy, until VIN voltage rises above VINDROOP+ Δ V, or current limiting switch current limliting
Benchmark is reduced to 0.It can be seen that, in the present embodiment, after input voltage is less than second threshold voltage, the adjustment to current limliting benchmark,
It is to be realized by the way of digital dullness is gradually reduced, the step delta I for reducing every time is consistent, certainly, using other modes
Can also realize, for example, analog ground is dull reduce, while step delta I can also be arranged to inconsistent.
As VIN voltage rises above VINDROOP+ Δ V, the current limliting benchmark of current limiting switch can be continued to reduce Δ I, and
Latched, it is ensured that adapter is operated in constant pressure CV states.If adapter is because electricity shortage, what appearance was switched repeatedly shows
As, when adapter often turns off one time, the current limliting benchmark of current limiting switch is reduced into Δ I, and latched, until current limiting switch always
Unlatching no longer automatically shuts down, or current limiting switch current limliting benchmark is reduced to 0, and the adapter so without constant current CC characteristics can also be just
Often power-supply device is charged.Under state two, current limiting switch Q1 always remains as fully on state.
Mode playback when filling (adapter charges to load and battery simultaneously)
State one：When adapter fan-out capability is enough to provide power-supply device and both required electric current sums of load, power supply
Equipment input voltage VIN will not decline.Under the state, circuit work can be divided into 2 kinds of situations：If a. the electric current of current limiting switch Q1 is adopted
Sample circuit 1 detects battery charge and load current sum less than current limiting switch cut-off current, then adapter is with power-supply device
The charging current of setting charges to battery, while providing load current.If b. the current sampling circuit 1 of current limiting switch Q1 is detected
Battery charge and load current are higher than current limiting switch cut-off current, then the current-limiting control circuit of current limiting switch works and adjusts electricity
Sense average current, that is, reduce battery charge, input current is maintained cut-off current；After battery charge drops to 0,
Load current remains above maximum cut-off current, then current limiting switch triggering overcurrent protection, after certain hour, cut-off current-limiting switch.
State two：Adapter power supply capacity is not enough to provide battery charge and load current simultaneously, but more than load
Electric current, then power-supply device input voltage VIN can decline, when VIN drops to VINDROOP, amplifier 1 makes under battery charge
Drop.Meanwhile, if VIN is consistently less than VINDROOP+ Δs V and reaches threshold time t, the current limliting benchmark of current limiting switch reduces Δ I,
And latched；If VIN is still below VINDROOP+ Δ V, and persistently reaches threshold time t, then the limit for having latched current limiting switch
Stream benchmark reduces Δ I again；By that analogy, until VIN voltage rises above VINDROOP+ Δ V, or current limiting switch current limliting
Benchmark is reduced to 0.As VIN voltage rises above VINDROOP+ Δ V, the current limliting benchmark of current limiting switch can be continued to reduce Δ
I, and latched, it is ensured that adapter is operated in constant pressure CV states.
If adapter is because electricity shortage, the phenomenon that appearance is switched repeatedly when adapter often turns off one time, current limliting is opened
Close current limliting benchmark and reduce Δ I, and latched, no longer automatically shut down until current limiting switch is always on, or current limiting switch limit
Stream benchmark is reduced to 0, and the adapter so without CC characteristics normally can also charge to power-supply device.Under state two, current limliting
Switch Q1 always remains as fully on state.
State three：Adapter power supply capacity is not enough to provide load current, then power-supply device input voltage VIN can decline,
When VIN drops to first threshold VINDROOP, the loop of amplifier 1 can make battery charge drop to 0.Meanwhile, if VIN holds
Continuous to reach threshold time t less than Second Threshold VINDROOP+ Δs V, then the current limliting benchmark of current limiting switch reduces Δ I, and is locked
Deposit；If input voltage VIN is still consistently less than VINDROOP+ Δ V threshold time t, the current limliting benchmark that current limiting switch has been latched
Reduce Δ I again；By that analogy, until VIN voltage rises above VINDROOP+ Δ V, or the current limliting benchmark of current limiting switch subtracts
Small is 0.As VIN voltage rises above VINDROOP+ Δ V, the current limliting benchmark of current limiting switch can be continued to reduce Δ I, gone forward side by side
Row is latched, it is ensured that adapter is operated in constant pressure CV states, but because adapter power supply capacity is not enough to provide load current, current limliting
Switch can be operated in limited current state, trigger overcurrent protection, after certain hour, cut-off current-limiting switch.
If adapter is because electricity shortage, the phenomenon that appearance is switched repeatedly when adapter often turns off one time, current limliting is opened
Close current limliting benchmark and reduce Δ I, and latched, no longer automatically shut down until current limiting switch is always on, or current limiting switch limit
Stream benchmark is reduced to 0；Because adapter power supply capacity is not enough to provide load current, current limiting switch can be operated in limited current state,
Triggering overcurrent protection, after certain hour, cut-off current-limiting switch.
For the phenomenon for switching repeatedly, also there is following scheme, the feelings that adapter is switched repeatedly because electricity shortage occurs
Under condition：During startup, the current limliting benchmark for being input into current limiting switch is stepped up from default minimum value, when there is adapter disconnection,
Current limliting benchmark is reduced into a step from currency, and is latched as the maximum of current limliting benchmark；When being restored electricity Deng adapter, current limliting
The current limliting benchmark of switch is stepped up from default minimum value again, but not more than previous latch maximum, if process
In occur adapter disconnection again, then maximum is updated into currency and reduces a step and latch；Until adapter no longer occurs
Disconnect or the current limliting benchmark is reduced to zero.
Repeated switching situation mainly due to when described input voltage be less than three threshold values when, the 3rd described threshold value
It is the value lower relative to first threshold, then judges that adapter disconnects, although now adapter is not necessarily fully disconnected or completely
Without output, simply power-supply device is by such case confirmation and is judged as that adapter disconnects, and the current limliting benchmark of current limiting switch is dropped
It is one step lower, and current current limliting benchmark is latched, after reopening, if adapter power supply capacity deficiency causes input voltage low
In the 3rd threshold value, then judge again adapter disconnect, on the current limliting benchmark for having latched continue drop it is one step lower, until adapter not
It is identified that shut-off or the current limliting benchmark of current limiting switch are reduced to zero again.The some embodiments are applied equally to other implementations
Mode and application scenario.
On the basis of such scheme, also there is following improvement project, it is adaptable in adapter to the power-supply device
The situation of electricity shortage under single pattern for charging or being put when filling：
During startup, the current limliting benchmark of current limiting switch is stepped up from default minimum value, until input voltage drops to
One threshold value, then reduce a step by the current limliting benchmark of current limiting switch from currency, described if input voltage is still below first threshold
Current limliting benchmark reduces a step again, until the input voltage is reduced to zero higher than Second Threshold or the current limliting benchmark, described the
Two threshold values are higher than first threshold.When input voltage below Second Threshold by being increased to more than Second Threshold, can be by current limliting base
Standard continues to reduce a step.
The present invention propose battery charging and discharging control strategy be also added into temperature control, further improve systematic function performance and
Reliability.When chip is in single charge mode or when filling under mode playback, when chip temperature exceedes setting value, temperature control
Circuit participates in the control of inductive current current limliting loop, reduces battery charge, makes chip temperature in controlled area charactert.Discharge mode
Under, when chip temperature exceedes threshold value, control circuit equally reduces the limitation of inductance average current so that output voltage VO UT declines,
Reduce power output, chip temperature is unlikely to further up.
In addition, although embodiment is separately illustrated and illustrated above, but it is related to the common technology in part, in this area
Those of ordinary skill apparently, can between the embodiments be replaced and integrate, and be related to one of embodiment that record is not known
Content, then refer to another embodiment on the books.
Above to having carried out detailed description, but the circuit on the patent and beneficial effect according to the preferred embodiments of the present invention
Fruit should not be considered as being limited only to described above, and disclosed embodiment and accompanying drawing can be better understood from the present invention, because
This, embodiment and Figure of description content disclosed above is that, in order to be better understood from the present invention, present invention protection is not limited to
Embodiment scope of disclosure, those of ordinary skill in the art are to replacement, the modification of the embodiment of the present invention in protection of the invention
Within the scope of.
Claims (14)
1. a kind of power-supply device, including：Power stage circuit, current limiting switch and control circuit, described control circuit respectively with institute
The control end connection of power stage circuit and current limiting switch is stated, the control circuit is adjusted by the input current of power-supply device of sampling
Section current limiting switch, the control circuit controls the Power convert of power stage circuit, is charged with to battery；
There is the situation of adapter electricity shortage under the pattern that adapter charges to the power-supply device list：The power-supply device
Input voltage decline, when the input voltage drops to first threshold, then the power is adjusted by the control circuit
Level circuit, to reduce inductive current, so as to reduce charging current of the power stage circuit to battery.
2. power-supply device according to claim 1, it is characterised in that charged to the power-supply device in adapter, power supply
Simultaneously under the pattern of load discharge, there is adapter electricity shortage to provide battery charge and load electricity simultaneously in equipment
Stream, but more than the situation of load current：The input voltage of the power-supply device declines, when the input voltage drops to the first threshold
During value, then the power stage circuit is adjusted by the control circuit, to reduce inductive current, so as to reduce power stage circuit pair
The charging current of battery.
3. power-supply device according to claim 2, it is characterised in that charged to the power-supply device in adapter, power supply
Simultaneously under the pattern of load discharge, there is adapter electricity shortage to provide the situation of load current in equipment：The power supply sets
Standby input voltage declines, and when the input voltage drops to first threshold, then adjusts the work(by the control circuit
Rate level circuit, makes inductive current be zero, so that being zero to the charging current of battery.
4. the power-supply device according to claim 1 or 2 or 3, it is characterised in that when the input voltage is less than Second Threshold
When, and its duration exceed threshold time, then the control circuit is by the current limliting baseline pull-down of the current limiting switch, described the
Two threshold values are higher than first threshold, if the input voltage is still below Second Threshold, and its duration exceedes threshold time, then after
The continuous current limliting benchmark for reducing the current limiting switch, until input voltage is reduced to zero higher than the Second Threshold or current limliting benchmark.
5. the power-supply device according to claim 1 or 2 or 3, it is characterised in that when described input voltage is less than the 3rd threshold
During value, the 3rd described threshold value then judges that adapter disconnects less than described first threshold, and the current limliting benchmark of current limiting switch is dropped
It is one step lower, and current current limliting benchmark is latched, after reopening, if adapter power supply capacity deficiency causes input voltage low
In the 3rd threshold value, then judge again adapter disconnect, on the current limliting benchmark for having latched continue drop it is one step lower, until adapter not
It is identified that shut-off or the current limliting benchmark of current limiting switch are reduced to zero again；If the duration that adapter disconnects exceedes setting
Between, then the power-supply device exits charge mode, and by the current limliting baseline restoration of current limiting switch to maximum.
6. power-supply device according to claim 4, it is characterised in that when the input voltage is risen by less than Second Threshold
And when reaching Second Threshold, then the control circuit continues the current limliting baseline pull-down certain amplitude of the current limiting switch.
7. the power-supply device according to claim 1 or 2 or 3, it is characterised in that filled to the power-supply device list in adapter
Adapter fan-out capability is enough to provide electric current needed for power-supply device under the pattern of electricity：Input voltage is more than Second Threshold, then control
Current limiting switch is in fully on state, and the current limliting benchmark of current limiting switch is maximum；The control circuit control power stage electricity
Battery is charged with the charging current for setting on road.
8. the power-supply device according to claim 1 or 2 or 3, it is characterised in that filled to the power-supply device in adapter
Electricity, power-supply device are simultaneously under the pattern of load discharge, adapter fan-out capability is enough to provide power-supply device and both institutes of load
When needing electric current sum：If a. battery charge and load current sum less than current limiting switch current limliting benchmark, adapter with
The charging current of power-supply device setting charges to battery, while providing load current；If b. battery charge and load current
Sum then adjusts inductance average current higher than the cut-off current of current limiting switch by controlling circuit, to reduce battery charge, makes
Input current maintains cut-off current；After battery charge drops to zero, load current remains above maximum cut-off current, then current limliting
Switch triggering overcurrent protection, after threshold time, cut-off current-limiting switch.
9. the power-supply device according to claim 1 or 2 or 3, it is characterised in that described control circuit includes Current limited Control
Circuit, control drive circuit and inductive current control circuit, described current-limiting control circuit is according to the voltage for characterizing input voltage
Sampled signal and the sample rate current to flowing through the input current of current limiting switch adjust the current limliting benchmark of current limiting switch, to adjust limit
Flow the input current of switch；Described control drive circuit is connected with the control end of power stage circuit, in regulation power stage circuit
Switching tube conducting state；Inductive current control circuit is used to adjust the electricity in power stage circuit by controlling drive circuit
Inducing current.
10. power-supply device according to claim 9, it is characterised in that described control circuit also includes temperature control electricity
Road, when the temperature of power-supply device exceedes setting value, then temperature-control circuit controls circuit reduction inductance electricity by inductive current
Stream, to reduce the charging current of battery, makes the reduction of power-supply device temperature；Under discharge mode, when power-supply device temperature exceedes threshold
Value, reduces inductive current so that output voltage declines, and reduces power output.
11. a kind of charge control methods of power-supply device, it is characterised in that comprise the following steps：
There is the situation of adapter electricity shortage under the pattern that adapter charges to the power-supply device list：The power-supply device
Input voltage decline, when the input voltage drops to first threshold, then the power is adjusted by the control circuit
Level circuit, to reduce inductive current, so as to reduce charging current of the power stage circuit to battery.
The power-supply device charged in adapter, under power-supply device pattern simultaneously to load discharge, adapter occur and powers
It is not enough to provide battery charge and load current simultaneously, but more than the situation of load current：The input of the power-supply device
Voltage declines, and when the input voltage drops to first threshold, then adjusts the power stage circuit by the control circuit,
To reduce inductive current, so as to reduce charging current of the power stage circuit to battery.
The power-supply device charged in adapter, under power-supply device pattern simultaneously to load discharge, adapter occur and powers
It is not enough to provide the situation of load current：The input voltage of the power-supply device declines, when the input voltage drops to first
During threshold value, then the power stage circuit is adjusted by the control circuit, make inductive current be zero, so that being filled to battery
Electric current is zero.
The charge control method of 12. power-supply devices according to claim 11, it is characterised in that when the input voltage is low
When Second Threshold, and its duration exceedes threshold time, then described to control circuit by the current limliting benchmark of the current limiting switch
Reduce, the Second Threshold is higher than first threshold, if the input voltage is still below Second Threshold, and its duration exceedes threshold
The value time, then continue to reduce the current limliting benchmark of the current limiting switch, until input voltage is higher than the Second Threshold or current limliting base
Standard is reduced to zero.
A kind of 13. power-supply devices, including：Power stage circuit, current limiting switch and control circuit, described control circuit respectively with institute
The control end connection of power stage circuit and current limiting switch is stated, the control circuit is adjusted by the input current of power-supply device of sampling
Section current limiting switch, the control circuit controls the Power convert of power stage circuit, is charged with to battery；
Adapter the power-supply device list is charged or the pattern put when filling under electricity shortage situation：
During startup, the current limliting benchmark of current limiting switch is stepped up from default minimum value, until input voltage drops to the first threshold
Value, then reduce a step, if input voltage is still below first threshold, the current limliting by the current limliting benchmark of current limiting switch from currency
Benchmark reduces a step again, until the input voltage is reduced to zero, second threshold higher than Second Threshold or the current limliting benchmark
Value is higher than first threshold.
14. power-supply devices according to claim 13, it is characterised in that：
In the case that switch repeatedly occurs because of electricity shortage for adapter：During startup, the current limliting benchmark of current limiting switch is input into from pre-
If minimum value step up, when adapter occur and disconnecting, current limliting benchmark is reduced into a step from currency, and be latched and be limited
Flow the maximum of benchmark；When being restored electricity Deng adapter, the current limliting benchmark of current limiting switch is progressively carried from default minimum value again
Height, but not more than previous latch maximum, if during occur again adapter disconnection, by maximum be updated to work as
Preceding value reduces a step and latches；Until adapter no longer occur disconnect or the current limliting benchmark be reduced to zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710083063.1A CN106712210B (en) | 2017-02-16 | 2017-02-16 | Power supply device and charging control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710083063.1A CN106712210B (en) | 2017-02-16 | 2017-02-16 | Power supply device and charging control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106712210A true CN106712210A (en) | 2017-05-24 |
| CN106712210B CN106712210B (en) | 2023-09-22 |
Family
ID=58911762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710083063.1A Active CN106712210B (en) | 2017-02-16 | 2017-02-16 | Power supply device and charging control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106712210B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888897A (en) * | 2019-02-21 | 2019-06-14 | 深圳市电将军科技有限公司 | Charge control method, battery charge controller and power supply adaptor |
| CN109995114A (en) * | 2019-04-17 | 2019-07-09 | 南京矽力杰半导体技术有限公司 | Adaptive charging circuit and charging method |
| CN110456147A (en) * | 2019-08-29 | 2019-11-15 | 无锡睿勤科技有限公司 | A kind of wattage information acquisition method, device and the electronic equipment of power supply adaptor |
| WO2022036514A1 (en) * | 2020-08-17 | 2022-02-24 | 华为数字能源技术有限公司 | Charging circuit, terminal device, adapter, and charging system and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110050163A1 (en) * | 2008-04-28 | 2011-03-03 | Actions Semiconductor Co., Ltd. | Battery charging device and method for controlling charging thereof |
| US20120268094A1 (en) * | 2011-04-22 | 2012-10-25 | Dialog Semiconductor Gmbh | Analog current limit adjustment for linear and switching regulators |
| US20130088203A1 (en) * | 2011-10-06 | 2013-04-11 | Intersil Americas LLC | Battery charge modulator with boost capability |
| CN103107562A (en) * | 2011-11-09 | 2013-05-15 | 珠海全志科技股份有限公司 | Switch charging circuit and power management system |
| CN103855760A (en) * | 2012-11-28 | 2014-06-11 | 瑞萨电子株式会社 | Semiconductor integrated circuit and operation method of the same |
| CN104600813A (en) * | 2015-02-11 | 2015-05-06 | 南京矽力杰半导体技术有限公司 | Adaptive input current limitation charger and control method thereof |
| CN104967181A (en) * | 2015-07-15 | 2015-10-07 | 杰华特微电子（张家港）有限公司 | Charging control method of charging equipment and charging control device |
-
2017
- 2017-02-16 CN CN201710083063.1A patent/CN106712210B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110050163A1 (en) * | 2008-04-28 | 2011-03-03 | Actions Semiconductor Co., Ltd. | Battery charging device and method for controlling charging thereof |
| US20120268094A1 (en) * | 2011-04-22 | 2012-10-25 | Dialog Semiconductor Gmbh | Analog current limit adjustment for linear and switching regulators |
| US20130088203A1 (en) * | 2011-10-06 | 2013-04-11 | Intersil Americas LLC | Battery charge modulator with boost capability |
| CN103107562A (en) * | 2011-11-09 | 2013-05-15 | 珠海全志科技股份有限公司 | Switch charging circuit and power management system |
| CN103855760A (en) * | 2012-11-28 | 2014-06-11 | 瑞萨电子株式会社 | Semiconductor integrated circuit and operation method of the same |
| CN104600813A (en) * | 2015-02-11 | 2015-05-06 | 南京矽力杰半导体技术有限公司 | Adaptive input current limitation charger and control method thereof |
| CN104967181A (en) * | 2015-07-15 | 2015-10-07 | 杰华特微电子（张家港）有限公司 | Charging control method of charging equipment and charging control device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888897A (en) * | 2019-02-21 | 2019-06-14 | 深圳市电将军科技有限公司 | Charge control method, battery charge controller and power supply adaptor |
| CN109995114A (en) * | 2019-04-17 | 2019-07-09 | 南京矽力杰半导体技术有限公司 | Adaptive charging circuit and charging method |
| CN109995114B (en) * | 2019-04-17 | 2023-09-01 | 南京矽力微电子技术有限公司 | Self-adaptive charging circuit and charging method |
| CN110456147A (en) * | 2019-08-29 | 2019-11-15 | 无锡睿勤科技有限公司 | A kind of wattage information acquisition method, device and the electronic equipment of power supply adaptor |
| CN110456147B (en) * | 2019-08-29 | 2021-12-24 | 无锡睿勤科技有限公司 | Wattage information acquisition method and device of power adapter and electronic equipment |
| WO2022036514A1 (en) * | 2020-08-17 | 2022-02-24 | 华为数字能源技术有限公司 | Charging circuit, terminal device, adapter, and charging system and method |
| CN114391206A (en) * | 2020-08-17 | 2022-04-22 | 华为数字能源技术有限公司 | Charging circuit, terminal equipment, adapter, charging system and method |
| CN114391206B (en) * | 2020-08-17 | 2024-03-01 | 华为数字能源技术有限公司 | Charging circuit, terminal equipment, adapter, charging system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106712210B (en) | 2023-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107231014B (en) | A kind of charging circuit, terminal and charging system | |
| CN104065119B (en) | Battery feed circuit and method of supplying power to | |
| US11239752B2 (en) | Adjusting peak inductor current to limit supply input current | |
| US6326771B1 (en) | Buffer battery power supply system | |
| CN1741345B (en) | Power management system | |
| CN106712210A (en) | Power equipment and charging control method therefor | |
| US7615965B2 (en) | Power management system | |
| US9246348B2 (en) | Battery charge modulator with boost capability | |
| US20200328601A1 (en) | Systems and methods for controlling battery current | |
| US6246215B1 (en) | Buffer battery power supply system | |
| US11495984B2 (en) | Dual role port automatic role reversal prevention | |
| CN111934416B (en) | Uninterrupted power supply battery hot plug device | |
| KR101871020B1 (en) | system for charging battery of energy storage system using PCS | |
| WO2019019505A1 (en) | Circuit structure for suppressing surge current | |
| TW201403994A (en) | Multi-stage battery module charging method and device thereof | |
| CN102111007B (en) | Battery charging circuit with protection function and seat-type charger | |
| CN108011415A (en) | A kind of Power Management Unit chip of integrated battery protection | |
| CN206481218U (en) | A kind of power circuit | |
| JP2005065480A (en) | Charging method for power storage system | |
| CN207234425U (en) | Power-supply device | |
| JP2002078228A (en) | Power-supply system for buffer battery | |
| KR20240078602A (en) | power system | |
| EP3332472B1 (en) | Adjusting peak inductor current to limit supply input current | |
| CN205726544U (en) | Control circuit | |
| CN101154825A (en) | Electric power supply system with remote control circuit and its operating method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Room 901-23, 9 / F, west 4 building, Xigang development center, 298 Zhenhua Road, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province, 310030 Applicant after: Jiehuate Microelectronics Co.,Ltd. Address before: Room 424, building 1, 1500 Wenyi West Road, Cangqian street, Yuhang District, Hangzhou City, Zhejiang Province Applicant before: JOULWATT TECHNOLOGY Inc.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |