CN103677191A - Electronic system, electronic device and power management method - Google Patents
Electronic system, electronic device and power management method Download PDFInfo
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- CN103677191A CN103677191A CN201210331624.2A CN201210331624A CN103677191A CN 103677191 A CN103677191 A CN 103677191A CN 201210331624 A CN201210331624 A CN 201210331624A CN 103677191 A CN103677191 A CN 103677191A
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Abstract
The invention discloses an electronic system, an electronic device and a power management method. The electronic system comprises a constant-power power supply unit and the electronic device to which power is supplied by the constant-power power supply unit. The electronic device comprises a core system, a rechargeable battery, a charger and a control unit, wherein the core system is used for controlling the operation of the electronic device, the charger is used for converting the power supplied by the constant-power power supply unit into a charging source, and the control unit is used for detecting whether the electric quantity of the rechargeable battery is larger than a first preset value when the needed power of the electronic device is higher than the maximum output power provided by the constant-power power supply unit and enabling the rechargeable battery and the constant-power power supply unit to supply power to the core system at the same time when the electric quantity of the rechargeable battery is larger than the first preset value. According to the electronic system, the electronic device and the power management method, the reduction of the efficiency of the system is avoided when the needed power of the electronic device is temporarily higher than the maximum output power provided by the constant-power power supply unit.
Description
Technical field
The present invention relates to a kind of electronic system, relate in particular to a kind of electronic system with constant power power supply unit.
Background technology
Fig. 1 is in order to illustrate the principle of work of the power supervisor in traditional notebook computer.When the voltage difference Vcs that the electric current I O current flowing detecting device of exporting when power supply unit causes is promoted to a second voltage Vcs1, represent that power demand (system load) PS of notebook computer arrives the output rating P1 of power supply unit.Should be noted, the load P A of power supply unit can be equal to the power demand PS of notebook computer, and the voltage VO that power supply unit is exported is definite value.Now power supervisor can be by reducing the charging current of battery or stopping battery charging, makes voltage difference on current detector lower than second voltage Vcs1, makes the power demand PS of notebook computer lower than the output rating P1 of power supply unit.
If reducing the charging current of battery or closing battery charger all to make voltage difference on current detector lower than second voltage Vcs1, power supervisor can be sent a power supply managing signal, force to lower by this current drain of central processing unit or other device of system, until the voltage difference on current detector is lower than second voltage Vcs1, to avoid power supply unit because (shutdown) closed in overload.
Fig. 2 is in order to illustrate the operating characteristic of the power supply unit in traditional notebook computer.When the output current IO of power supply unit surpasses an overload line OLL, (for example house dog (watch dog) can carry out timing to overload timer, and when load timer count value C1 surpasses preset value PV, power supply unit can be closed.As shown in Figure 2, when time t1-t2, because output current IO does not surpass overload line OLL, so overload timer does not start timing.In time t3-t4, output current IO surpasses overload line OLL, thus the timing of overload timer initiation until output current IO be reduced to below overload line OLL; And because the count value of overload timer does not surpass preset value PV, so power supply unit is not closed.In time t5-t6, output current IO surpasses overload line OLL and makes the timing of overload timer initiation, wherein overload timer count up to preset value PV when t6, so makes power supply unit close because count value reaches preset value PV, namely output voltage VO is down to 0.
By operating characteristic and the system specifications of notebook computer, the power demand that notebook computer increases is suddenly generally a blink, and for example the moment access of a certain program causes system power supply increase in demand in the short time.Traditionally for fear of and the situation that reduces power supply unit overload occur, for example, when therefore the output rating (90 watts) of selected power supply unit all can operate higher than General System required power demand (for example 65 watts).Yet, most of the time system do not need to use so high power demand, use the excessive power supply unit of output rating will cause effective utilization low.Moreover the power supply unit of high specified power stage conventionally meaning is greater than the power supply unit volume of low rated power output, this also causes cannot be more compact in design.
Summary of the invention
The object of the invention is to utilize constant power power supply unit and rechargeable battery the core system of electronic installation to be powered, to avoid being temporarily greater than when the power demand of electronic installation the system effectiveness decline problem that peak power output was caused of power supply unit simultaneously.
The invention provides a kind of electronic system, comprise a constant power power supply unit and an electronic installation of being powered by constant power power supply unit.Electronic installation comprises a core system, a rechargeable battery, a charger and a control module.Core system is in order to control the operation of electronic installation, and charger is converted to a charge power supply in order to the power supply that constant power power supply unit is provided.When control module surpasses in order to the power demand when electronic installation the peak power output that constant power power supply unit provides, whether the electric weight that detects rechargeable battery is greater than one first preset value, and when the electric weight of rechargeable battery is greater than the first preset value, rechargeable battery and constant power power supply unit are powered to core system simultaneously.
The present invention also provides a kind of method for managing power supply, is applicable to the electronic installation that a constant power power supply unit is powered, and this electronic installation comprises a core system, a rechargeable battery, a charger and a control module.Method for managing power supply comprises whether a power demand that judges electronic installation surpasses the peak power output that constant power power supply unit provides; When the power demand of electronic installation surpasses the peak power output that constant power power supply unit provides, whether the electric weight that detects rechargeable battery is greater than one first preset value; And when the electric weight of rechargeable battery is greater than the first preset value, rechargeable battery and constant power power supply unit are powered to core system simultaneously.
The present invention also provides a kind of electronic installation, is powered, and comprise a core system, a rechargeable battery, a charger and a control module by a constant power power supply unit.Core system is in order to control the operation of electronic installation, and control module is while surpassing in order to the power demand when electronic installation the peak power output that constant power power supply unit provides, whether the electric weight that detects rechargeable battery is greater than one first preset value, and when the electric weight of rechargeable battery is greater than the first preset value, rechargeable battery and constant power power supply unit are powered to core system simultaneously.
Suddenly the power demand increasing due to electronic installation is generally a blink, and for example the moment access of a certain program causes system power supply increase in demand in the short time, therefore electronic installation of the present invention does not need to reduce usefulness because of the power demand increasing suddenly.On the other hand, the power demand that can provide power to increase suddenly in response to this due to rechargeable battery, so as long as required power demand when the output rating of constant power power supply unit can be in response to electronic installation general operation.Moreover, because the power supply unit of low-power output is conventionally meaned and come littlely than the power supply unit volume of high-power output, therefore also can be more compact in design.For above and other object of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below.
Accompanying drawing explanation
Fig. 1 is in order to illustrate the principle of work of the power supervisor in traditional notebook computer.
Fig. 2 is in order to illustrate the operating characteristic of the power supply unit in traditional notebook computer.
Fig. 3 is the schematic diagram of electronic system provided by the present invention.
Fig. 4 A is another schematic diagram of electronic system of the present invention.
Fig. 4 B is another schematic diagram of electronic system of the present invention.
Fig. 5 A is another schematic diagram of electronic system of the present invention.
Fig. 5 B is another schematic diagram of electronic system of the present invention.
Fig. 6 (a) schemes in order to the electronic installation 500A time sequential routine of key diagram 5A to Fig. 6 (d).
Fig. 7 is in order to illustrate the operating characteristic of constant power power supply unit of the present invention.
Description of reference numerals in above-mentioned accompanying drawing is as follows:
50 ~ electronic system;
100 ~ constant power power supply unit;
200,200A, 200B, 500A, 500B ~ electronic installation;
210 ~ control module;
211,510 ~ current detector;
212,530 ~ embedded controller;
220,520 ~ charger;
230,540 ~ rechargeable battery;
240,550,590 ~ switch;
250,560 ~ core system;
570 ~ soft start element;
PS ~ power demand;
PA ~ output power;
PB ~ power;
P1, P2 ~ output rating;
Vcs1 ~ second voltage;
V1 ~ the first voltage;
Vcs ~ voltage difference;
IO ~ electric current;
VO ~ voltage;
OLL ~ overload line;
PV ~ preset value;
C1 ~ count value;
Rcs ~ resistance.
Embodiment
Device and the using method of various embodiments of the invention will be discussed in detail below.Yet it should be noted that many feasible inventive concepts provided by the present invention may be implemented in various particular ranges.These specific embodiments are only for illustrating device of the present invention and using method, but non-for limiting scope of the present invention.
Fig. 3 is the schematic diagram of electronic system provided by the present invention.As shown in the figure, electronic system 50 comprises constant power power supply unit 100 and electronic installation 200, and wherein electronic installation 200 comprises control module 210, charger 220, rechargeable battery 230 and core system 250.For example, core system 250 of the present invention can comprise processing unit, storer, memory storage, output unit, input media, communicator, and uses bus to be linked together.In other words, electronic installation 200 of the present invention can be a computer apparatus.In addition, it is upper that those of ordinary skills also can be implemented on electronic installation of the present invention other computer system sample states (configuration), for example multicomputer system, take microprocessor as basis or the consumption electronic products of programmable (microprocessor-based or programmable consumer electronics), network computer, mini computer, mainframe, panel computer, notebook computer and similar equipment.For example, the consumption electronic products that electronic installation 200 is basis or programmable for microprocessor can comprise mobile phone, projector, display screen, personal digital assistant (personal digital assistant, PDA), digital video equipment, digital music player etc.Processing unit can comprise a single CPU (central processing unit) (central-processing unit; CPU) or close a plurality of parallel processing units be connected in parallel calculation environment (parallel processing environment).Storer comprises ROM (read-only memory) (read only memory, ROM), flash memory (flash ROM) and/or random access memory (random access memory, RAM), program module and the data that in order to storage, can carry out for processing unit.Generally speaking, program module comprises Chang Xu (routines), program (program), object (object), element (component) etc., in order to carry out the operation of controlling electronic installation 200.
In an embodiment of the present invention, constant power power supply unit 100 is for example, in order to receive an AC power (civil power) and to convert a direct supply to, in order to be supplied to charger 220 and/or core system 250.Electronic installation 200 is coupled to constant power power supply unit 100, and can be powered or be powered by rechargeable battery 220 by constant power power supply unit 100.The power supply that electronic installation 200 can provide according to constant power power supply unit 100 (for example voltage and/or electric current), drives core system 250 and/or rechargeable battery 220 is charged.
When control module 210 of the present invention surpasses in order to the power demand when electronic installation 200 peak power output that constant power power supply unit 100 provides, whether the electric weight that detects rechargeable battery 230 is greater than one first preset value, and when the electric weight of rechargeable battery 230 is greater than the first preset value, orders about rechargeable battery 230 and power to core system 250 with constant power power supply unit 100 simultaneously.In one embodiment, the power demand of electronic installation 200 is the system load of electronic installation 200 or the system load of core system 250, but is not limited to this.Moreover the peak power output of constant power power supply unit 100 also can be the output rating of constant power power supply unit 100.For example, control module 210 can be an embedded controller, one 8051 microprocessors or a controller chip, but is not limited to this.The peak power output that the power demand of the electronic installation in the present invention surpasses constant power power supply unit betide can program moment access or the power supply requirement that causes of system boot increase, but be not limited to this.
For example, control module 210 can detect the output current of constant power power supply unit 100 and produce one first voltage corresponding to this output current, when this first voltage surpasses a second voltage, judge that the power demand of electronic installation 200 surpasses the peak power output that constant power power supply unit 100 provides.When the power demand of electronic installation 200 surpasses the peak power output that constant power power supply unit 100 provides, control module 210 can first be controlled the charging current that charger 220 reduces or close rechargeable battery 230.If the power demand of electronic installation 200 still surpasses the peak power output that constant power power supply unit 100 provides, can detect the current electric weight of rechargeable battery 230.If the current electric weight of rechargeable battery 230 is higher than one first preset value, 210 of control modules can order about rechargeable battery 230 and core system 230 be powered with constant power power supply unit 100 simultaneously.
Moreover, after if rechargeable battery 230 is powered with constant power power supply unit 100 simultaneously, the power summation of the peak power output that the power demand of electronic installation 200 still provides over constant power power supply unit 100 and the power of rechargeable battery 230 outputs, now control module 210 is sent a power managing signal to core system 250, to force to lower the power supply requirement of core system 250, until the power summation of the power of the peak power output that the power demand of electronic installation 200 provides lower than constant power power supply unit 100 and rechargeable battery 230 outputs.Lower the mode of the power supply requirement of core system 250, for example, the power managing signal that core system 250 is sent according to control module 210 reduces system effectiveness, for example operating frequency of processor and/or operating voltage, but be not limited to this.
In one embodiment, after rechargeable battery 230 is powered to core system 230 with constant power power supply unit 100 simultaneously, when if the electric weight of rechargeable battery 230 is brought down below the first preset value, control module 210 will stop 230 pairs of core systems 250 of rechargeable battery and power.If now the power demand of electronic installation 200 still surpasses the peak power output that constant power power supply unit 100 provides, control module 210 transmits power managing signal to core system 250, to force lowering core system 250 power supply requirements, make the power demand of electronic installation 200 be reduced to the peak power output that constant power power supply unit 100 provides.The first preset value wherein, for example, be rechargeable battery 230 be full of percent 80 of electric weight, but be not limited to this.In a certain embodiment, the first preset value be rechargeable battery 230 be full of percent 70,90,85 or 60 of electric weight, but be not limited to this.
In another embodiment, after rechargeable battery 230 and constant power power supply unit 100 are powered to core system 230 simultaneously, when the electric weight of rechargeable battery 230 is brought down below the first preset value, rechargeable battery 230 does not have the action of stopping power supply, until rechargeable battery electric weight is while being brought down below second preset value, control module 210 sides can stop 230 pairs of core systems 230 of rechargeable battery and power.If now the power demand of electronic installation 200 still surpasses the peak power output that constant power power supply unit 100 provides, control module 210 will transmit power managing signal to core system 250, to force reducing core system 250 power supply requirements, make the power demand of electronic installation 200 be reduced to the peak power output that constant power power supply unit 100 provides.In this embodiment, the second preset value is lower than the first preset value.For example, the first preset value be rechargeable battery 230 be full of percent 80 of electric weight, the second preset value be rechargeable battery 230 be full of percent 70 of electric weight, but be not limited to this.Thus, by the setting of the first preset value and the second preset value, in the time of can avoiding rechargeable battery 230 electric weight near the first preset value, switch continually the action of charging, electric discharge, and then the serviceable life of avoiding reducing rechargeable battery 230.
In the present invention, because the output power of constant power power supply unit 100 is certain value, so when the power demand of electronic installation 200 increases (that is current drain increase), the output voltage of constant power power supply unit 100 will decline.When control module 210 can approach the voltage of rechargeable battery 230 at the output voltage of constant power power supply unit 100, order about constant power power supply unit 100 and in parallel core system 250 is powered with rechargeable battery 230.In one embodiment, rechargeable battery 230 of the present invention is intelligent batteries, and it has a detecting element (gauge IC) in order to detect the electric weight of rechargeable battery 230.Moreover control module 210, charger 220 are connected by a bus (I2C or SM Bus) with rechargeable battery 230, therefore control module 210 is learnt the electric weight that rechargeable battery 230 is current constantly.
Fig. 7 is in order to illustrate the operating characteristic of the present invention's constant power power supply unit.Because the output power of constant power power supply unit 100 is definite value, so when the power demand (system load) of electronic installation 200 increases, the output current IO of constant power power supply unit 100 can rise, and output voltage VO can decline thereupon.When the output current IO of constant power power supply unit 100 surpasses an overload line OLL, overload timer can carry out timing, if when the count value C1 of load timer surpasses preset value PV, 100 of constant power power supply units can be closed.On the contrary, when the count value C1 of load timer does not surpass preset value PV, 100 of constant power power supply units can not be closed.
Fig. 4 A is another schematic diagram of electronic system of the present invention.As shown in the figure, electronic system 50 comprises constant power power supply unit 100 and electronic installation 200A, and wherein electronic installation 200A comprises control module 210, charger 220, rechargeable battery 230, switch 240 and core system 250.Control module 210 comprises current detector 211 and embedded controller 212.
In addition, embedded controller 212 also can detect the current electric weight of rechargeable battery 230.If after charge closing device 220, the first voltage V1 is still higher than second voltage, and the current electric weight of rechargeable battery 230 is higher than the first preset value, embedded controller 212, by sending control signal by switch 240 short circuits, powers rechargeable battery 230 and constant power power supply unit 100 to core system 250 simultaneously.
If rechargeable battery 230 is powered to core system 250 with constant power power supply unit 100 simultaneously, and the first voltage V1 is while being still greater than second voltage, embedded controller 212 sends power managing signal to core system 250, uses the power demand that reduces electronic installation 200.Reduce the mode of the power demand of electronic installation 200, for example, comprise and reduce central processing unit (CPU) arithmetic speed.
If the first voltage V1 that current detector 211 produces is less than second voltage, and now rechargeable battery 230, not to core system 250 power supplies, represents that the power demand of electronic installation 200A is lower than the situation of the peak power output of constant power power supply unit 100.Embedded controller 212 judges that whether the electric weight of rechargeable battery 230 saturated, if unsaturation embedded controller 220 send control signal 220 pairs of rechargeable batteries 230 of charger charged.
In another embodiment, if the first voltage V1 that current detector 211 produces is less than second voltage, and now 230 pairs of core systems of rechargeable battery, 250 power supplies, represent that the power demand of electronic installation 200A is lower than the output power summation of constant power power supply unit 100 and rechargeable battery 230.Now judge when rechargeable battery 230 is not powered to core system 250, whether the output power of constant power power supply unit 100 enough offers core system 250, if the output power of constant power power supply unit 100 enough offers core system 250, rechargeable battery 230 is no longer powered to core system 250, otherwise, if the output power of constant power power supply unit 100 offers core system 250 not, rechargeable battery 230 continues power supply to core system 250.When rechargeable battery 230 is not powered to core system 250, embedded controller 212 judges that whether the electric weight of rechargeable battery 230 saturated, if unsaturation embedded controller 220 send control signal 220 pairs of rechargeable batteries 230 of charger charged.
Fig. 4 B is another schematic diagram of electronic system of the present invention.As shown in the figure, electronic installation 200B is similar to the electronic installation 200A in Fig. 4 A, and its difference is that electronic installation 200B also comprises a switch 260, and core system 250 constant power power supply units 100 are powered by charger 220.Electronic installation 200B and electronic installation 200A something in common, please refer to the explanation in Fig. 4 A, in this, is not repeated.In the present embodiment, charger converts a charge power supply (a for example charging voltage) in order to the power supply (DC voltage of exporting) that constant power power supply unit 100 is provided, and provides to rechargeable battery 230 and/or core system 250.Moreover one first control signal and one second control signal that switch 240 and 260 is sent by embedded controller 212 are respectively controlled.
For example, the the first voltage V1 producing when the electric current of constant power power supply unit 100 current flowing detecting devices 211 is greater than the second voltage in embedded controller 212, represents that the power demand of electronic installation 200 surpasses the peak power output that constant power power supply unit 100 provides.If now charger 220 is over against rechargeable battery 230 chargings, embedded controller 212 is sent second and is controlled signal to switch 260, makes charger 220 stop rechargeable battery 230 to charge.
In addition, embedded controller 212 also can detect the current electric weight of rechargeable battery 230.After rechargeable battery 230 being charged if stop, the first voltage V1 is still higher than second voltage, and the current electric weight of rechargeable battery 230 is higher than the first preset value, embedded controller 212 will be sent the first control signal by switch 240 short circuits, and rechargeable battery 230 and charger 220 are powered to core system 250 simultaneously.
If rechargeable battery 230 is powered to core system 250 with charger 220 simultaneously, and the first voltage V1 is while being still greater than second voltage, and embedded controller 212 sends power managing signal to core system 250, reduces the power demand of electronic installation 200B.For example, the mode that reduces the power demand of electronic installation 200 comprises the arithmetic speed that reduces central processing unit, but is not limited to this.
Fig. 5 A is another schematic diagram of electronic system of the present invention.As shown in the figure, electronic system 50 comprises constant power power supply unit 100 and electronic installation 500A, and wherein electronic installation 500A comprises a soft start element 570, core system 560, switch 550, rechargeable battery 540, embedded controller 530, charger 520 and current detector 510.Soft start element 570 (soft start) is coupled to constant power power supply unit 100, via core system 560, controls soft start element 570, makes the electric current of constant power power supply unit 100 be entered current detector 510.
In the present embodiment, current detector 510 has a resistance R cs.When the electric current providing when constant power power supply unit 100 is flowed through resistance R cs, on the two ends of resistance R cs, can produce voltage difference Vcs.Voltage difference Vcs can deliver to embedded controller 530, and embedded controller 530 carries out corresponding control according to voltage difference Vcs.In the present embodiment, voltage difference Vcs can be the first voltage in the embodiment of Fig. 3,4A, 4B.
For example, when electronic installation 500A power demand is during higher than the peak power output of constant power power supply unit 100, the voltage difference Vcs that resistance R cs causes is by the second voltage higher than in embedded controller 530.If now charger 520 is over against rechargeable battery 540 chargings, embedded controller 530 will send control signal to charger 520, reduces charging current or charge closing device 520.In addition, embedded controller 530 also can detect the current electric weight of rechargeable battery 540.
After charge closing device 520, if the voltage difference Vcs on resistance R cs is still higher than second voltage, and the current electric weight of rechargeable battery 540 is higher than the first preset value, embedded controller 530 is sent the first control signal by switch 550 short circuits, and rechargeable battery 540 and constant power power supply unit 100 are powered to core system 560 simultaneously.When rechargeable battery 540 and constant power power supply unit 100 are powered to core system 560 simultaneously, if voltage difference Vcs is during still higher than second voltage, embedded controller 530 sends power managing signal to core system 560, reduces the power demand of electronic installation 500A.For example, the mode of reduction electronic installation 500A power demand comprises reduction central processing unit (CPU) arithmetic speed.
Fig. 5 B is another schematic diagram of electronic system of the present invention.As shown in the figure, electronic installation 200B is similar to the electronic installation 500A in Fig. 5 A, and its difference is that electronic installation 500B also comprises a switch 590, and core system 560 is powered by charger 520 by constant power power supply unit 100.Electronic installation 500B and electronic installation 500A something in common, please refer to the explanation in Fig. 5 A, in this, is not repeated.In the present embodiment, charger 520 converts a charge power supply in order to the power supply (DC voltage of exporting) that constant power power supply unit 100 is provided, and provides to rechargeable battery 540 and/or core system 560.Moreover first, second control signal that switch 550 and 590 is sent by embedded controller 530 is respectively controlled.Switch 590 is for cutting out the charging current to rechargeable battery 540.
For example, when the peak power output that the power demand of electronic installation 500B provides higher than constant power power supply unit 100, the voltage difference Vcs on resistance R cs is by the second voltage higher than in embedded controller 530.If now charger 520 is over against rechargeable battery 540 chargings, embedded controller 530 will send the second control signal to switch 590, makes charger 520 stop rechargeable battery 540 to charge.In addition, embedded controller 530 also can detect the current electric weight of rechargeable battery 540.
After closing switch 590, if the voltage difference Vcs on resistance R cs is still higher than second voltage, and the current electric weight of rechargeable battery 540 is higher than the first preset value, embedded controller 530, by sending control signal by switch 550 short circuits, powers rechargeable battery 540 and charger 520 to core system 560 simultaneously.After rechargeable battery 540 and charger 520 are powered to core system 560 simultaneously, if voltage difference Vcs during still higher than second voltage, embedded controller 530 sends power managing signal to core system 560, to reduce the power demand of electronic installation 500B.For example, the mode of reduction electronic installation 500B power demand comprises the arithmetic speed that reduces central processing unit.
Fig. 6 (a) schemes in order to the electronic installation 500A time sequential routine of key diagram 5A to Fig. 6 (d).Fig. 6 (a) is in order to illustrate power demand (system load) PS of electronic installation 500A.Fig. 6 (b) is in order to illustrate the output power PA of constant power power supply unit 100.The power P B of Fig. 6 (c) in order to illustrate that rechargeable battery 540 provides.Fig. 6 (d) is in order to illustrate the voltage difference Vcs on resistance R cs.If Fig. 6 (a) is to as shown in Fig. 6 (d), during time t0 ~ t2, be that power demand (for example system load) PS of electronic installation 500A is lower than the situation of constant power power supply unit output power PA.Now embedded controller 530 can judge that whether rechargeable battery 540 electric weight are saturated, if unsaturation can be controlled 520 pairs of rechargeable batteries 540 of charger and charge.
During time t2 ~ t3, the power demand of electronic installation 500A (system load) PS surpasses the output rating P2 of constant power power supply unit 100.Now the voltage difference Vcs on resistance R cs will be greater than the second voltage Vcs1 of embedded controller 530, therefore embedded controller 530 sending control signal when t3 makes charger 520 stop rechargeable battery 540 to charge.Therefore, the power demand of electronic installation 500A (system load) PS declines when time t3 ~ t4, the voltage difference Vcs on current detector 510 also be less than second voltage Vcs1.During time t4 ~ t5, the power demand of electronic installation 500A (system load) PS is less than the output rating P2 of constant power power supply unit 100.
During time t5 ~ t6, the power demand of electronic installation 500A (system load) PS surpasses constant power power supply unit 100 output ratings, and now embedded controller 530 can judge the electric weight of rechargeable battery 540.In this embodiment, the electric weight of rechargeable battery 540 is greater than the first preset value, therefore embedded controller 530 by switch 550 short circuits, makes rechargeable battery 540 and constant power power supply unit 100 core system 560 be powered simultaneously.
In certain embodiments, after 540 pairs of core systems 560 of rechargeable battery are powered, for example, if the electric weight of rechargeable battery 540 pre-sets (a set electric weight lower limit) lower than one first, embedded controller 530 also can stop 540 pairs of core systems 560 of rechargeable battery powers, and sends power managing signal to core system 560 and will force the attenuating central processing unit (CPU) of core system 560 or the current consumption of other devices until the voltage difference Vcs on resistance R cs is less than second voltage Vcs1.
During time t6 ~ t10, the action of embedded controller 530 is identical during with time t4 ~ t6, in this, is not repeated.In certain embodiments, in core system, power management is realized by north and south bridge chip.In a certain embodiment, in core system, the function of power management also can be realized by embedded controller 530.
In summary, stopping after 520 pairs of rechargeable batteries 540 of charger charge or reduce the charging current of rechargeable battery 540, if the power demand of electronic installation 500A (system load) PS still surpasses the output rating P2 of constant power power supply unit 100, compared to traditional practice, embedded controller 530 in the present invention can't send the usefulness that power managing signal reduces electronic installation at once, but utilizes 540 pairs of core systems 560 of rechargeable battery to power.
Suddenly the power demand increasing due to electronic installation is generally a blink, and for example the moment access of a certain program causes system power supply increase in demand in the short time, therefore electronic installation of the present invention does not need to reduce usefulness because of the power demand increasing suddenly.On the other hand, the power demand that can provide power to increase suddenly in response to this due to rechargeable battery 540, for example, as long as required power demand (65 watts) when so the output rating P2 of constant power power supply unit 100 can be in response to electronic installation 500A general operation.
Generally speaking, known notebook computer, for the power demand in response to increasing suddenly, all can be selected the power supply unit of larger output power (for example 90 watts) conventionally.Yet, most of the time system do not need to use so high power demand, this will cause the effective utilization of power supply unit low.Compared to this, the effective utilization of constant power power supply unit of the present invention is better.Moreover, because the power supply unit of low-power output is conventionally meaned and come littlely than the power supply unit volume of high-power output, therefore also can be more compact in design.
Claims (17)
1. an electronic system, comprising:
One constant power power supply unit; And
One electronic installation, is powered by above-mentioned constant power power supply unit, comprising:
One core system, in order to control the operation of above-mentioned electronic installation;
One rechargeable battery;
One charger, is converted to a charge power supply in order to the power supply that above-mentioned constant power power supply unit is provided; And
One control module, while surpassing in order to the power demand when above-mentioned electronic installation the peak power output that above-mentioned constant power power supply unit provides, whether the electric weight that detects above-mentioned rechargeable battery is greater than one first preset value, and when the electric weight of above-mentioned rechargeable battery is greater than above-mentioned the first preset value, above-mentioned rechargeable battery and above-mentioned constant power power supply unit are powered to above-mentioned core system simultaneously.
2. electronic system as claimed in claim 1, wherein above-mentioned control module provides the output current to above-mentioned electronic installation in order to detect above-mentioned constant power power supply unit, and generation is corresponding to one first voltage of above-mentioned output current, and when above-mentioned the first voltage surpasses a second voltage, judge that above-mentioned power demand surpasses above-mentioned peak power output.
3. electronic system as claimed in claim 1, also comprises:
One first switch, be coupled between above-mentioned rechargeable battery and above-mentioned core system, in order to when above-mentioned power demand surpasses above-mentioned peak power output, one first control signal according to above-mentioned control module, provides the power supply of above-mentioned rechargeable battery to above-mentioned core system.
4. electronic system as claimed in claim 3, wherein above-mentioned control module comprises:
One current detector, provides the output current to above-mentioned electronic installation in order to detect above-mentioned constant power power supply unit, and produces one first voltage corresponding to above-mentioned output current; And
One embedded controller, in order to when above-mentioned the first voltage surpasses a second voltage, judge that above-mentioned power demand surpasses above-mentioned peak power output, and send above-mentioned the first control signal to above-mentioned the first switch, above-mentioned rechargeable battery and above-mentioned constant power power supply unit are powered to above-mentioned core system simultaneously.
5. electronic system as claimed in claim 4, when the electric weight that wherein surpasses above-mentioned peak power output and above-mentioned rechargeable battery when above-mentioned power demand has been brought down below above-mentioned the first preset value, above-mentioned embedded controller makes above-mentioned rechargeable battery stop power supply to above-mentioned core system, and send a power managing signal to above-mentioned core system, make above-mentioned electronic installation reduce power demand.
6. electronic system as claimed in claim 5, wherein above-mentioned charger is coupled between above-mentioned core system and above-mentioned constant power power supply unit, and above-mentioned charge power supply is provided to above-mentioned core system and above-mentioned rechargeable battery.
7. electronic system as claimed in claim 6, also comprises:
One second switch, be coupled between above-mentioned rechargeable battery and above-mentioned charger, in order to when above-mentioned power demand surpasses above-mentioned peak power output, one second control signal according to above-mentioned control module, will stop above-mentioned charge power supply above-mentioned rechargeable battery will be charged.
8. a method for managing power supply, is applicable to the electronic installation that a constant power power supply unit is powered, and above-mentioned electronic installation comprises a core system, a rechargeable battery, a charger and a control module, and above-mentioned method for managing power supply comprises:
Whether a power demand that judges above-mentioned electronic installation surpasses the peak power output that above-mentioned constant power power supply unit provides;
When the above-mentioned power demand of above-mentioned electronic installation surpasses the above-mentioned peak power output that above-mentioned constant power power supply unit provides, whether the electric weight that detects above-mentioned rechargeable battery is greater than one first preset value; And
When the electric weight of above-mentioned rechargeable battery is greater than above-mentioned the first preset value, above-mentioned rechargeable battery and above-mentioned constant power power supply unit are powered to above-mentioned core system simultaneously.
9. method for managing power supply as claimed in claim 8, also comprises:
When the electric weight that surpasses above-mentioned peak power output and above-mentioned rechargeable battery when above-mentioned power demand is down to and is less than above-mentioned the first preset value, send a power managing signal to above-mentioned core system, make above-mentioned electronic installation reduce power demand.
10. method for managing power supply as claimed in claim 8, also comprises:
When the electric weight that surpasses above-mentioned peak power output and above-mentioned rechargeable battery when above-mentioned power demand is down to and is less than second preset value, send a power managing signal to above-mentioned core system, make above-mentioned electronic installation reduce power demand, wherein above-mentioned the second preset value is less than above-mentioned the second preset value.
11. method for managing power supply as claimed in claim 8, also comprise:
When the above-mentioned power demand of above-mentioned electronic installation is greater than the above-mentioned peak power output that above-mentioned constant power power supply unit provides, make above-mentioned charger to above-mentioned rechargeable battery charging.
12. method for managing power supply as claimed in claim 8, wherein judge that the step whether above-mentioned power demand surpasses above-mentioned peak power output comprises:
Detect above-mentioned constant power power supply unit the output current to above-mentioned electronic installation is provided;
Generation is corresponding to one first voltage of above-mentioned output current; And
When above-mentioned the first voltage surpasses a second voltage, judge that above-mentioned power demand surpasses above-mentioned peak power output.
13. method for managing power supply as claimed in claim 8, the step that wherein makes above-mentioned rechargeable battery and above-mentioned constant power power supply unit simultaneously power to above-mentioned core system comprises:
The power supply above-mentioned constant power power supply unit being provided by above-mentioned charger is converted to a charge power supply, and above-mentioned charge power supply is provided to above-mentioned core system;
Above-mentioned charge power supply is not charged to above-mentioned rechargeable battery; And
The power supply that above-mentioned rechargeable battery is provided provides to above-mentioned core system.
14. method for managing power supply as claimed in claim 8, the step that wherein makes above-mentioned rechargeable battery and above-mentioned constant power power supply unit simultaneously power to above-mentioned core system comprises:
By above-mentioned constant power power supply unit, provided power supply is provided to above-mentioned core system and above-mentioned charger;
Above-mentioned charger is not charged to above-mentioned rechargeable battery; And
The power supply that above-mentioned rechargeable battery is provided provides to above-mentioned core system.
15. 1 kinds of electronic installations, are powered by a constant power power supply unit, comprising:
One core system, in order to control the operation of above-mentioned electronic installation;
One rechargeable battery;
One charger; And
One control module, while surpassing in order to the power demand when above-mentioned electronic installation the peak power output that above-mentioned constant power power supply unit provides, whether the electric weight that detects above-mentioned rechargeable battery is greater than one first preset value, and when the electric weight of above-mentioned rechargeable battery is greater than above-mentioned the first preset value, above-mentioned rechargeable battery and above-mentioned constant power power supply unit are powered to above-mentioned core system simultaneously.
16. electronic installations as claimed in claim 15, wherein above-mentioned control module comprises:
One current detector, provides the output current to above-mentioned electronic installation in order to detect above-mentioned constant power power supply unit, and produces one first voltage corresponding to above-mentioned output current; And
One embedded controller, in order to when above-mentioned the first voltage surpasses a second voltage, judges that above-mentioned power demand surpasses above-mentioned peak power output, and above-mentioned rechargeable battery and above-mentioned constant power power supply unit is powered to above-mentioned core system simultaneously.
17. electronic installations as claimed in claim 16, when the electric weight that wherein surpasses above-mentioned peak power output and above-mentioned rechargeable battery when above-mentioned power demand has been brought down below above-mentioned the first preset value, above-mentioned embedded controller makes above-mentioned rechargeable battery stop power supply to above-mentioned core system, and send a power managing signal to above-mentioned core system, make above-mentioned electronic installation reduce power demand.
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| CN201210331624.2A CN103677191A (en) | 2012-09-10 | 2012-09-10 | Electronic system, electronic device and power management method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015176430A1 (en) * | 2014-05-19 | 2015-11-26 | 中兴通讯股份有限公司 | Charging control method and apparatus, terminal and computer storage medium |
| CN106774757A (en) * | 2015-11-25 | 2017-05-31 | 广达电脑股份有限公司 | Electronic device and power control method thereof |
| CN108509010A (en) * | 2018-03-21 | 2018-09-07 | 联想(北京)有限公司 | Method of supplying power to and power supply system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3846694A (en) * | 1973-03-30 | 1974-11-05 | Fonseca J | Constant power supply employing a variable frequency inverter |
| US6326771B1 (en) * | 1999-03-08 | 2001-12-04 | 02 Micro International Limited | Buffer battery power supply system |
| CN1838503A (en) * | 2005-02-18 | 2006-09-27 | 美国凹凸微系有限公司 | Parallel powering of portable electrical devices |
-
2012
- 2012-09-10 CN CN201210331624.2A patent/CN103677191A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3846694A (en) * | 1973-03-30 | 1974-11-05 | Fonseca J | Constant power supply employing a variable frequency inverter |
| US6326771B1 (en) * | 1999-03-08 | 2001-12-04 | 02 Micro International Limited | Buffer battery power supply system |
| CN1838503A (en) * | 2005-02-18 | 2006-09-27 | 美国凹凸微系有限公司 | Parallel powering of portable electrical devices |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015176430A1 (en) * | 2014-05-19 | 2015-11-26 | 中兴通讯股份有限公司 | Charging control method and apparatus, terminal and computer storage medium |
| EP3148038A1 (en) * | 2014-05-19 | 2017-03-29 | ZTE Corporation | Charging control method and apparatus, terminal and computer storage medium |
| EP3148038A4 (en) * | 2014-05-19 | 2017-03-29 | ZTE Corporation | Charging control method and apparatus, terminal and computer storage medium |
| CN106774757A (en) * | 2015-11-25 | 2017-05-31 | 广达电脑股份有限公司 | Electronic device and power control method thereof |
| CN106774757B (en) * | 2015-11-25 | 2020-10-20 | 广达电脑股份有限公司 | Electronic device and power control method thereof |
| CN108509010A (en) * | 2018-03-21 | 2018-09-07 | 联想(北京)有限公司 | Method of supplying power to and power supply system |
| CN108509010B (en) * | 2018-03-21 | 2024-04-23 | 联想(北京)有限公司 | Power supply method and power supply system |
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