CN1366371A - Buffer battery power system - Google Patents
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- CN1366371A CN1366371A CN 01102018 CN01102018A CN1366371A CN 1366371 A CN1366371 A CN 1366371A CN 01102018 CN01102018 CN 01102018 CN 01102018 A CN01102018 A CN 01102018A CN 1366371 A CN1366371 A CN 1366371A
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Abstract
The invention relates to a power system of buffer battery. In an example, a battery charger circuit provides total output current for transportion to active system and battery. With being checked and measured. The total output current and the current transported to the battery are compared to preset signal threshold of total output current and the current transported to battery. The generated comparing signal is as carrier signal fed back from circuit of the battery charger so as to control total output current. In another example, besides the total output current and the current transported to battery are checked and measured, the total output voltage is also measured. The error signal of total output power is obtained from the total output voltage multiplied by total output current in order to control total output current and/or the total output voltage.
Description
The invention relates to a kind of battery power supply system, particularly a kind of may command is applied to the buffer battery charger circuit of the power of an active system or rechargeable battery.Special purpose of the present invention is the power-supply system of portable electron device, although also considered other purposes here.
Fig. 1 is the simplification block schematic diagram of the power supply topologies 20 of the typical prior art that is used for portable electron device 24 in the prior art.Active system 24 is by 22 controls of system's DC-DC converter, obtain energy from battery 18 or outside input power supply adaptor 10 (for example exchanging output or DC power supply), input power supply adaptor 10 is main power supply from the outside, obtains energy and directly this energy is offered system's DC-DC converter 22 (by separating diode 12) and battery charger 14 as AC delivery outlet or DC source.In a single day this battery 18 is connected with system DC-DC converter 22 by separating diode 16, and in the time can't utilizing main power supply, provides energy to this transducer 22.In the time can utilizing main power supply, battery 18 is isolated with the power supply input of this system's DC-DC converter 22 by the diode 16 of reversed polarity (partially anti-).In addition, when power supply is when being supplied with by this main power supply, battery 18 is recharged by charger 14.The shortcoming of the topological structure of Fig. 1 is at node 25 big and fast voltage transient to be arranged, and this node 25 is the input of system's DC-DC converter 22.
Figure 2 shows that the simplification block schematic diagram of the topological structure of a buffer battery power 20 '.Battery pack 18 and the input of system DC-DC converter 22 be permanent to be connected and its required power supply is provided.When the main power supply in available outside, outside input power supply adaptor 10 is to battery charger 14 power supplies.These outside input power supply adaptor 10 usefulness are so that the parameter of main power supply is fit to the requirement of charger input.This battery charger 14 with parallel way to system's DC-DC converter 22 and battery 18 equal supplying energies with charging, or the voltage of the battery that will charge fully maintains optimum level.This " buffer-type battery topological structure " is limited in the change in voltage of a normal battery with the change in voltage of system's DC-DC converter input, and do not allow at this input fast voltage transient to take place.And when system's 24 required power supplys temporarily surpassed the ability of input power supply adaptor 10, input power supply adaptor 10 and battery 18 all can pass through transducer 22 conveying capacities to system 24 concurrently.Yet, the circuit 20 ' of Fig. 2 the mechanism that reduces or increase the power that is provided by battery charger according to battery, system or both restrictions or demand is not provided.
Similarly, people's such as Kates United States Patent (USP) provides a kind of battery charger circuit topological structure for the 5th, 698, No. 964.The electric current that this kind circuit can be monitored AC adapter (is I
In) and moderately utilize all available electric currents to battery charge.This system's DC-DC converter is directly linking the back by its power supply with the AC adapter, and battery also is not attached to system.Therefore the voltage of the input of system's DC-DC converter is when being higher than the charged battery voltage maximum at every turn, bears by the low-voltage of the discharge battery transient state slowly to the voltage of AC adapter.And, because of the AC adapter output voltage may change, so do not provide actual control to the power that sends to system's (for example portable electric appts) and battery by AC adapter.People's such as Bell United States Patent (USP) provides a kind of similar structures the 5th, 723, No. 970, has also run into the above-mentioned similar and/or additional problem of mentioning.
Therefore, need a kind of may command gross output and be delivered to the buffer battery power system of the power of battery badly.And, need provide a kind of and can shorten the system that appears at electric device battery or the voltage transient among both significantly.
Therefore, the present invention can solve above-mentioned defective by a buffer battery power system is provided, and this system comprises total output current that battery charger circuit is carried and the FEEDBACK CONTROL that flows to the voltage of battery.And the gross output that this FEEDBACK CONTROL is carried according to battery charger circuit (total output current * total output voltage) provides.
In one embodiment of the invention, the power-supply system that provides comprises: one is used for the duty cycle of power delivery to active system and battery in order to generation.Provide in order to first feedback loop that detects total output current that this charger circuit produces and in order to detect second feedback loop that is delivered to the electric current of this battery by this charger circuit.This first and second feedback loop comprises the error circuit that this charger circuit is produced error signal.This charger circuit is adjusted duty cycle according to the value of this error signal, and control is delivered to total output current of this active system and this battery thus.
In another embodiment of the present invention, the power-supply system that provides comprises: an input power source; One is used to control this input power source in order to generation carries the charger circuit of controlled power to the duty cycle of active system and battery; Provide one in order to detect first feedback loop of total output current that this charger circuit produces, first feedback loop produces first error signal according to thresholding total output current signal of this total output current and existence; Provide one in order to detect second feedback loop that is delivered to the electric current of this battery by this charger circuit, this second feedback loop foundation is delivered to the electric current of this battery and the thresholding battery current signal of existence produces second error signal; Provide one in order to detect the 3rd feedback loop of the gross output that this charger circuit produces, the 3rd feedback loop produces the 3rd error signal according to the thresholding gross output signal of this gross output and existence; By using this first, second and third error signal, this charger circuit adjustment is used to control the total output current that is delivered to this active system and this battery and the duty cycle of power.
With method, the invention provides a kind of adjusting is delivered to the electric current of active system and battery by charger circuit method.This method comprises according to total output current of charger circuit and the total output current signal of thresholding that presets, detects the step of first error signal.This method also comprises the thresholding battery current signal that is delivered to the electric current of battery and presets according to by charger circuit, detects the step of second error signal.One of first or second error signal is provided to charger circuit as feedback signal.This charger circuit is regulated the electric current of output according to first or second feedback error signal.
Skilled person in this area can recognize that though following detailed description is carried out with reference to preferred embodiment and using method, the present invention is intended to be defined in these preferred embodiments and using method.On the contrary, the present invention has scope widely and only is intended to and limits with the scope of the claim followed.
Along with following detailed explanation and consult diagram, other advantage of the present invention and feature will be clearly.Figure number identical in the diagram refers to components identical, wherein:
Fig. 1 is the calcspar of the circuit construction of electric power of a prior art;
Fig. 2 is the structure calcspar of another power circuit of prior art;
Fig. 3 is the calcspar of a preferred embodiment of power-supply system of the present invention;
Fig. 4 is the detailed circuit diagram of the embodiment of Fig. 3;
Fig. 5 is the detailed circuit diagram of another embodiment of power-supply system of the present invention;
The detailed circuit diagram of one electric current that provides among the embodiment of Fig. 6 for Fig. 5-voltage product practical circuit; And
Provide among the embodiment of Fig. 7 for Fig. 5-detailed circuit diagram of electric current-another example of voltage product circuit;
Fig. 3 shows the calcspar according to a preferred embodiment of battery power supply system 30 of the present invention.As previously discussed, this battery 18 forever is connected in system's DC-DC converter by detecting resistance 34.Preferably the resistance value of this resistance 34 is very little so that detect to flow into and when electric current that battery 18 flows out voltage drop can ignore.Battery charger 32 is by separating diode 12 and detecting the input (node 25) that resistance 36 is connected in system's DC-DC converter.When input power supply adaptor 10 has an available main power supply and its when being connected to system 30, this battery charger 32 provides required power supply by 22 pairs of active systems 24 of DC-DC converter, and simultaneously to battery 18 chargings.Regulated by battery charger 32 by detecting the battery charge that resistance 34 detected and the voltage of node 25, this charger utilizing links from the feedback of current sense resistor 34 and node 25.And detect total battery charger output current and this output current is defined in a safety value by the feedback binding of use from detection resistance 26 to battery charger 32 to detect resistance 26.This battery charger 32 is made a response by reducing charging current.The feedback that below will describe in detail by detecting resistance 26 and 34 links.
Consult Fig. 4, this figure describes the detailed circuit diagram of battery charger circuit 32 according to an embodiment of the invention. Switch MOS transistor 40 and 42, Schottky diode 46, inductance 44, electric capacity 48 and pulse width modulator 38 and constitute a controlled step-down controller (buck converter) jointly.In this embodiment, the duty cycle of this step-down controller pulse is controlled by pulse width modulator 38 by at least three feedback loops: I) be across voltage circuit, II that error amplifier 60 is set up) the battery charge loop of using battery charge detecting amplifier 64 and error amplifier 58, and III) embed total output current limit circuit of output current detecting amplifier 62 and comparator 56. Diode 50,52 and 54 guarantees that negative peak (being that diode has maximum anti-value partially) is by pulse width modulator PWM38.This is the measured value of worst error, and therefore the control to numbered output parameter is provided.
When input power supply adaptor 10 provided the input of power supply to charger, this pulse width modulator 38 began to produce the grid impulse of driving power MOS transistor 40 and 42.As a result, the output of this charger produces a voltage.The duty cycle of this pulse wave is decided by the feedback voltage from feedback loop that PWM38 receives.Short of this duty cycle will reduce above set arbitrary limit value, and this minimizing can increase the output voltage of this step-down controller again.As described below, set limit value best definition is the input of presetting of comparator.When the output voltage of this transducer surpassed cell voltage, circuit 80 switches to conducting (ON) and output current arrives node 25.This electric current branches to system's DC-DC converter 22 and battery 18.The electric current that flow to battery 18 can detect generation one voltage drop on the resistance 34.This voltage is amplified by detecting amplifier 64 and does one relatively by error amplifier 58 with programmed value IDAC.When this charging current surpassed the value IDAC of this program, the output of this error amplifier 58 can become negative, the diode 52 of flowing through, and reduce the duty cycle of PWM so that this charging current remains on this programmed value.Similarly, error amplifier 60 does one relatively with cell voltage and programmed value VDAC, and, when charging voltage surpasses this programmed value VDAC, shorten the duty cycle of step-down controller.Similarly, total output current of step-down controller can detect generation one voltage drop on the resistance 26.This voltage drop amplify by detecting amplifier 62 and by error amplifier 56 with itself and preset value I
Out-maxDo one relatively.When total output current surpassed this preset value, error amplifier 56 was output as negative, and this signal flow is through diode 50, and duty cycle can reduce to keep total output current at this limit value that presets.This reduces to reduce battery charge.Known as everybody, because battery has a low internal impedance, so battery charge can descend fast along with the minimizing of voltage.On the contrary, the electric current that absorbed of system's DC-DC converter only is subjected to the influence of this change in voltage in edge.Therefore, the total current I of node 25 when battery charge reduces
TOTCan keep constant.Therefore, the electric current that is dispensed to system's DC-DC converter 22 can increase.Reach when presetting limit value, the whole output current of step-down controller can be assigned to system 24.And, if system needs more power, voltage will descend more and battery can participate in step-down controller power is provided.This feature makes available less Yu cheaper input power rectifier.
Signal VDAC and IDAC represent to deliver to the maximum current of battery 18 and the programming signal of voltage safely, that is cell safety is operated the threshold value that is allowed.In some cases, battery 18 provides signal VDAC and IDAC (also even battery 18 is that what is called provides indication maximum allowable power " intelligent battery "), and this signal can be digital form.Therefore, provide the D/A converter (not shown) that signal VDAC and IDAC are converted to analog signal and be used for comparing at error amplifier 58,60 respectively, as mentioned above.Or other programmable circuit (not shown) that VDAC and IDAC can roads known in the art produces.And, reference signal I
Out-maxBe another preset gate limit value, the licensed conveying of its expression PWM in order to avoid carrying the maximum permissible current of overcurrent by charger circuit 32.This I
Out-maxCan by the bleeder circuit (not shown) or should specialty in known to other current generating circuit produce.
Must be noted that in this embodiment, preferably replace diode 12 with circuit 80.Diode 12 (Fig. 3) and circuit 80 are all avoided arriving PWM from the reverse current of battery 18.Yet the additional advantage that circuit 80 surpasses diode is that the forward voltage that need be used for turning circuit 80 can be ignored.Therefore compared to diode, circuit 80 has very little voltage drop, so being lost in the system of being produced of circuit 80 is insignificant.Circuit 80 cuts off by the reverse current of battery to charger.Circuit 80 comprises a MOS transistor 70 that is embedded with diode 72 bodies, and this MOS transistor 70 is driven by comparator 66.The definite just skew that provides as bias generator 68 is provided this comparator 66.In case relatively its source electrode is for negative in the drain electrode of MOS transistor, then comparator 66 is output as height and MOS transistor 70 is ended.When the drain voltage of MOS transistor surpassed this side-play amount, comparator 66 was output as low and the MOS transistor conducting.So, circuit 80 is worked as very low forward drop such as same diode.
Total output current of the power-supply system restriction step-down controller of Fig. 4.Because the step-down controller output voltage depends on cell voltage, so for a battery that discharges fully, output current qualification method can force step-down controller to send a power lower than rated value.Therefore, except Control Parameter shown in Figure 4, other solution is the power output of control with the restriction step-down controller,
Fig. 5 has shown that one is similar to the system 32 ' of system among Fig. 4, but has increased by a Power Limitation loop.Across detecting voltage drop on the resistance 26 (with total output current I
OutProportional) be applied to output current detecting amplifier 62 and multiplier 82.Can detect output voltage V by linking with second of multiplier
OutBy total output current value and output voltage values are multiplied each other, this multiplier 82 its output provide one with the proportional voltage PWR_OUT of power output.To other loop, the restriction of this PWR_OUT voltage and setting is done one relatively by comparator 84.Fault in enlargement drives PWM38 by diode 86.The function class of this diode is similar to one of other diode 20,52,54 as described in Figure 4.
Figure 6 shows that one is used for demonstrative circuit 82 that step-down controller output current value and magnitude of voltage are carried out multiplying.The voltage drop that detects on the resistance 26 is applied to trsanscondutance amplifier 88.This amplifier is exported an electric current K * I
Out, this electric current and this voltage drop are proportional, and be also proportional with total output current thus.MOS transistor 90 is with duty cycle copped wave this electric current identical with step-down controller.As a result, this task signal is applied to the control line of transistor 90.By comprehensive RC combination 94, the integrating circuit around the operational amplifier 92 is with the current integration of gained.The output voltage of this integrator circuit 92 can be proportional with the gross output of step-down controller.
Figure 7 shows that another is used for the demonstrative circuit 82 ' that output current value and magnitude of voltage are carried out multiplying.This circuit is according to the characteristic of well-known differential amplifying stage.The output voltage of this grade is source current (I=k * V together haply
Out) proportional with the product of differential input voltage.Differential amplifying stage shown in Figure 7 comprises each common source transistor 98 and 100 that all links with reference voltage Vcc.This differential input is linked to total current and detects resistance 26.So the output voltage that amplifier 96 provides can be proportional with the power output of step-down controller.
Therefore, clearly the present invention provides a kind of buffer battery power circuit that satisfies the purpose that is proposed.Those skilled in the art can be recognized, can be considered to as modification that define, within the scope of the present invention in the additional claim or/and change the present invention.
For example, though the preferred embodiment of Fig. 4 and Fig. 5 is specifically mentioned with controlled step-down controller circuit, but the professional and technical personnel can recognize this circuit and can be replaced by the controlled power supply in other this area, for example comprises stepup transformer (boost), a reducing transformer (buck-boost) and other similar circuit topological structure boost.This topological structure also can be got by frequency range modulation circuit and/or other switching topological structure.
Other modification also is possible, and other reverse biased switch that a for example available specialty is known comprises for example bias transistor circuit, equivalent replacement diode 50,52,54 and 56.
Claims (28)
1, a kind of power-supply system comprises: a charger circuit is used for the duty cycle of power delivery to an active system and a battery in order to generation; Detection is by first feedback loop of total output current that this charger circuit produced and detect second feedback loop that is delivered to the electric current of described battery by this charger circuit, this first and this second feedback loop comprise the error circuit of the error signal that is used to produce this charger circuit, wherein this charger circuit is used to regulate this duty cycle of the total output current that is delivered to this active system and this battery according to this error signal value adjustment.
2, power-supply system as claimed in claim 1 also comprises an input power source that is connected to described charger circuit.
3, power-supply system as claimed in claim 1, wherein said charger circuit, described active system and described battery are for being connected in parallel.
4, power-supply system as claimed in claim 2, wherein said charger circuit comprises pulse-width modulation (PWM) circuit that is connected with described input power source, and this pwm circuit provides described duty cycle to regulate described input power source according to the error signal that is provided by described first feedback loop and described second feedback loop.
5, power-supply system as claimed in claim 1, wherein said first feedback loop comprises: the detection resistance that is delivered to total output current signal of described active system in order to detection, in order to amplify first detecting amplifier of this total output current signal, first comparator, do one relatively in order to total output current signal that will amplify with predetermined total output current threshold value, to produce first error signal; And use so that this first error signal flow to first switch of described charger circuit; Described second feedback loop comprises: the second detection resistance that is delivered to the current signal of described battery in order to detection, be delivered to second detecting amplifier of the current signal of described battery in order to amplification, do one relatively in order to the described amplified current signal that will be delivered to described battery with predetermined battery current threshold value, to produce second comparator of second error signal, reach and use so that this second error signal flow to the second switch of described charger circuit; Wherein this first and second switch is for being connected in parallel, and wherein when error signal is applied to described charger circuit, the maximum of this first and second error signal is allowed to flow through this first and second switch.
6, power-supply system as claimed in claim 5, also comprise the 3rd feedback loop, the 3rd feedback loop comprises: in order to compare cell voltage and predetermined cell voltage threshold signal, to produce the 3rd comparator of the 3rd error signal, reach and use so that the 3rd error signal flow to the 3rd switch of described charger circuit; Wherein said first, second and third switch is for being connected in parallel, and wherein when described error signal is applied to described charger circuit, the maximum in this first, second and third error signal is allowed to flow through described first, second and third switch.
7, power-supply system as claimed in claim 1 also comprises one direct current-direct current transducer circuit, is used to receive the described output current of being exported and be delivered to described active system by described charger circuit.
8, power-supply system as claimed in claim 1 also comprises a reverse current restricting circuits, is used to limit electric current and flow to described charger circuit by described battery.
9, power-supply system as claimed in claim 8, wherein said reverse current restricting circuits comprises the diode of the forward bias voltage drop with described total output current direction.
10, power-supply system as claimed in claim 8, wherein said reverse current restricting circuits comprises: a transistor; One comparator, this comparator are connected in described transistorized input and output line, and are used to produce the control signal that links with this transistorized control line; One voltage source is used for this transistor of forward bias; Wherein when electric current from described inlet flow this transistor turns when the described output.
11, power-supply system as claimed in claim 5, wherein said predetermined total output current threshold value and described predetermined battery voltage threshold signal are produced by a programmable circuit.
12, power-supply system as claimed in claim 6, wherein said predetermined total output current threshold value is produced by a bleeder circuit with described predetermined battery voltage threshold signal, total output voltage of this bleeder circuit dividing potential drop and the voltage on the described battery.
13, power-supply system as claimed in claim 5 also comprises a power limiting feedback loop, and this feedback loop comprises: be used for described total output current be multiply by the multiplier circuit that produces the gross output signal mutually with total output voltage; In order to more described gross output signal and a predetermined electric power out gate limited signal to produce the power comparator of a power output error signal; And be used to allow described power output error signal to flow to the power switch of described charger circuit; Wherein said first, second and power switch be for being connected in parallel, and wherein when described error signal is applied to described charger circuit, and the maximum in described first, second and the power error signal can flow through described first, second and power switch.
14, power-supply system as claimed in claim 13, wherein said multiplier circuit comprises: in order to produce the trsanscondutance amplifier of total current signal; Has transistor as the described duty cycle of importing from the control line of described charger circuit, this transistor is used for according to the control line of described duty cycle copped wave total current signal conduct from described charger circuit, and this described duty cycle is used for described total output current and described output voltage be multiply by generation one a power current signal and an integrating circuit mutually; This power current signal and described gross output are proportional; This integrating circuit is in order to produce and the proportional output voltage signal of described gross output.
15, power-supply system as claimed in claim 13, wherein said multiplier circuit comprise one in order to the differential amplifier circuit of generation with the proportional output voltage of described gross output.
16, a kind of power-supply system comprises: an input power source; One charger circuit is used to produce in order to control the duty cycle that this input power source is delivered to controlled power on one active system and a battery; First feedback loop, in order to detect by total output current that this charger circuit produced, this first feedback loop this total output current of foundation and the total output current signal of thresholding that presets produce first error signal; Second feedback loop, in order to detect the electric current that is delivered to this battery by this charger circuit, this second feedback loop produces second error signal according to the described thresholding battery current signal that is delivered to the electric current of this battery and presets; The 3rd feedback loop, in order to detecting by the gross output that this charger circuit produced, the 3rd feedback loop produces the 3rd error signal according to this gross output and the thresholding gross output signal that presets; Wherein this charger circuit is adjusted this duty cycle according to the value of this first, second and third error signal, and this duty cycle is delivered to the total output current and the power of this active system and this battery in order to adjusting.
17, power-supply system as claimed in claim 16, also comprise the 4th feedback loop, be delivered to the voltage of described battery in order to detection, the 4th feedback loop produces the 4th error signal according to the described thresholding battery voltage signal that is delivered to the voltage of this battery and presets; Wherein this charger circuit is adjusted this duty cycle according to the value of this first, second, third and the 4th error signal, and this duty cycle is delivered to the total output current and the power of this active system and this battery in order to adjusting.
18, power-supply system as claimed in claim 16, wherein said first feedback loop comprises: first comparator that is used for more described total output current and the described total output current signal of thresholding that presets; Described second feedback loop comprises: be used for the more described current signal of described battery and second comparator of the thresholding battery current signal that presets of being delivered to; Described the 3rd feedback loop comprises: the 3rd comparator, be used for more described gross output and the described thresholding gross output signal that presets, and each this first, second and third comparator produces described first, second and third error signal respectively.
19, power-supply system as claimed in claim 16, wherein said first, second and third error signal is applied to a switch, and wherein this switch is according to the maximum action of described first, second and third error signal.
20, power-supply system as claimed in claim 18, wherein said the 3rd feedback loop also comprises a multiplier circuit, this multiplier circuit is used for described total output current and described total output voltage are multiplied each other, and is used for producing and the proportional signal of described gross output.
21, power-supply system as claimed in claim 16, wherein said charger circuit comprise pulse-width modulation (PWM) circuit that is connected with described input power source, and this pwm circuit produces described duty cycle according to described first, second or the 3rd error signal.
22, power-supply system as claimed in claim 16 also comprises a reverse current restricting circuits, flow to described charger circuit in order to the restriction electric current by described battery, and wherein the reverse current restricting circuits comprises: a transistor; One is connected in the comparator of this transistorized incoming line and output line, and this comparator is connected to the control signal of this transistorized control line in order to generation; And a usefulness is so that this transistor is positively biased voltage source; Wherein when electric current from described inlet flow this transistor turns when the described output.
23, a kind of method that is transported to the electric current of active system and battery by charger circuit of regulating, this method comprises the following step:
Detect first error signal according to this charger circuit and the total output current signal of thresholding that presets;
According to be delivered to the electric current of this battery and thresholding battery current input second error signal that presets by this charger circuit; And
Provide this first or one of this second error signal to this charger circuit as feedback signal, and according to this first or this second feedback error signal regulate the electric current that this charger circuit is carried.
24, method as claimed in claim 23 also comprises the following step:
Total output voltage according to described total output current and described charger circuit detects the 3rd error signal, and provide described first, second and third error signal to this charger circuit as feedback signal, and regulate electric current and/or the voltage of carrying by charger circuit according to described first, second and third feedback error signal.
25, method as claimed in claim 23 also comprises the following step:
Detect the 4th error signal according to voltage that exports described battery by described charger circuit to and the thresholding battery voltage signal that presets, and provide described first, second or the 4th error signal as feedback signal to described charger circuit, and regulate voltage and/or electric current by charger circuit output according to described first, second or the 4th feedback error signal.
26, method as claimed in claim 24 also comprises the following step:
Described total output current of described charger circuit be multiply by described total output voltage to produce described the 3rd error signal, and the gross output of the 3rd error signal and described charger circuit is proportional.
27, method as claimed in claim 23 also comprises the following step:
Restriction is from described battery and flow to the reverse current of described charger circuit.
28, method as claimed in claim 23 also comprises the following step:
Amplify described total output current, and more described total output current and the total output current signal of the described thresholding that presets are to produce described first error signal; And
Amplification is delivered to the described electric current of described battery by described charger circuit, and the more described electric current that is delivered to described battery and described thresholding battery current signal are to produce described second error signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011020180A CN100483890C (en) | 2001-01-19 | 2001-01-19 | Buffer battery power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011020180A CN100483890C (en) | 2001-01-19 | 2001-01-19 | Buffer battery power system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1366371A true CN1366371A (en) | 2002-08-28 |
| CN100483890C CN100483890C (en) | 2009-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011020180A Expired - Lifetime CN100483890C (en) | 2001-01-19 | 2001-01-19 | Buffer battery power system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7692403B2 (en) * | 2005-05-24 | 2010-04-06 | Compal Electronics, Inc. | Power control apparatus |
| CN1839533B (en) * | 2003-08-18 | 2010-12-08 | Mks仪器股份有限公司 | Power supply control loop with multiple leveling modes |
| CN107134847A (en) * | 2017-05-25 | 2017-09-05 | 苏州日博飞能源科技有限公司 | A kind of wide input module formula DC UPS system |
| CN108475920A (en) * | 2016-01-27 | 2018-08-31 | 松下知识产权经营株式会社 | Control device of electric motor |
-
2001
- 2001-01-19 CN CNB011020180A patent/CN100483890C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1839533B (en) * | 2003-08-18 | 2010-12-08 | Mks仪器股份有限公司 | Power supply control loop with multiple leveling modes |
| US7692403B2 (en) * | 2005-05-24 | 2010-04-06 | Compal Electronics, Inc. | Power control apparatus |
| CN108475920A (en) * | 2016-01-27 | 2018-08-31 | 松下知识产权经营株式会社 | Control device of electric motor |
| CN108475920B (en) * | 2016-01-27 | 2021-07-13 | 松下知识产权经营株式会社 | Motor control device |
| CN107134847A (en) * | 2017-05-25 | 2017-09-05 | 苏州日博飞能源科技有限公司 | A kind of wide input module formula DC UPS system |
| CN107134847B (en) * | 2017-05-25 | 2023-10-24 | 苏州日博飞能源科技有限公司 | Wide input modular direct current uninterrupted power system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100483890C (en) | 2009-04-29 |
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