CN102480138B - Power system and hybrid power-on and power-down control method - Google Patents
Power system and hybrid power-on and power-down control method Download PDFInfo
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- CN102480138B CN102480138B CN201010556452.XA CN201010556452A CN102480138B CN 102480138 B CN102480138 B CN 102480138B CN 201010556452 A CN201010556452 A CN 201010556452A CN 102480138 B CN102480138 B CN 102480138B
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- G06F1/263—Arrangements for using multiple switchable power supplies, e.g. battery and AC
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Abstract
The invention discloses a power system and a hybrid power-on and power-down control method. The method comprises the following steps of: allowing configuration of a down load and a down battery, cutting off the load and switching to a load cut-off state when detecting that bus voltage is less than a load power-down voltage threshold value in a normal state; in the load cut-off state, if detecting that the bus voltage is greater than or equal to sum of the load power-down voltage threshold value and power-on return difference, attracting the load and switching to the normal state; if detecting that the bus voltage is less than the battery power-down voltage threshold value, cutting off the battery and switching to a battery cut-of state; in the battery cut-of state, adjusting output voltage of a rectifier to be expected output voltage, and if detecting that the bus voltage reaches the expected output voltage, turning to a pre-recovery state; and in the pre-recovery state, adjusting the output voltage of the rectifier to be recovery voltage, and if detecting that the bus voltage reaches to recovery voltage and the load has been cut off, attracting the battery and turning to the load cut-off state. Through the system and the method, the problems of high transient current and the like during repeated power-on and power-down and battery attraction of the system are solved.
Description
Technical field
The present invention relates to power technique fields, relate in particular to the control method of communication base station power system and power-on and power-off thereof.
Background technology
Communication is the equipment that power supply is provided for the communication equipment in whole base station with integrated drive generator.Application scenarios requires this kind equipment must have high reliability, can uninterrupted power supply, and therefore base station power is typically equipped with many Battery packs to realize the object of uninterrupted power supply, and rectifier, load and battery are all connected to system common port (busbar).When civil power is normal, integrated drive generator is mainly as electric energy converting equipment, and supplying with communication equipment (claiming afterwards load) after civil power conversion, energy storage charges the battery simultaneously; When city's electrical anomaly, by battery discharge, supply of electrical energy is to load, and power-supply system is now mainly as watch-dog, in order to protect cost can not affect useful life because of over-discharge can compared with high battery.
At present, the safeguard measure of generally taking is: when cell voltage drops to a certain degree, just cut off the path of battery and load, i.e. so-called " lower electricity ".In industry, according to cutting off the position difference in powered battery loop, be divided into again " lower load " and " lower battery " two kinds of modes: when lower load refers to that system is carried out lower electricity operation, by being connected of load retention system busbar and battery with being connected disconnection of system busbar; Correspondingly, lower battery is to disconnect battery to retain being connected of battery and load with being connected of system busbar.
No matter but be lower mode of loading or lower battery mode, general lower electric control condition is all at battery discharge to voltage, to disconnect during lower than certain threshold value, connect when normal and system output voltage is higher than this threshold value at Alternating Current Power Supply.But in actual applications, this type of lower electric control method is easy to occur following problem:
The one, when after load under system, because battery is stopping its terminal voltage after heavy-current discharge and have the bounce-back of certain amplitude, after may making lower electricity, cell voltage step is elevated on lower electric threshold value, system detects after busbar voltage or cell voltage are higher than lower electric threshold value will be recovered to power on, battery is once electric discharge lower electricity again, and this will cause system concussion;
The 2nd, after lower battery, exchange and recover normal, if cell voltage is slightly large with busbar voltage pressure reduction when recovering battery and connecting, the moment of adhesive battery has very large electric current and produces, and easily causes attracting device to damage or initiation other accident;
The 3rd, after lower battery, exchange normal, the power output of possible configuration rectifier only can meet loading demand, now after adhesive battery, also will separate more power charges the battery, causing rectifier output voltage to decline makes system again play battery, after lower battery, rectifier output voltage promotes and adhesive battery, causes system to shake power-on and power-off repeatedly.
Therefore, need to improve the power-on and power-off control mode in integrated drive generator for existing communication, to can power on safely after can realizing steady safe lower electricity and exchanging recovery, ensure in time uninterrupted power supply and the Electrical Safety of communication equipment.
Summary of the invention
Technical problem to be solved by this invention is, a kind of power-supply system and power-on and power-off control method are provided, excessive for solving the electric current that powers on after lower electricity while recovering, and easily causes system concussion, easily damages device, the problem of harm Electrical Safety.
In order to address the above problem, the present invention proposes a kind of power-on and power-off method of mixing, under only allowing under the configuration of load,
If under normal condition, detect that busbar voltage is less than piezoelectric voltage threshold value under load, disconnecting consumers is switched to load off-state;
If under load off-state, detect that busbar voltage is more than or equal under load piezoelectric voltage threshold value and powers on return difference sum, adhesive load be switched to normal condition.
The present invention also provides the another kind of power-on and power-off method of mixing, under only allowing under the configuration of battery,
If under normal condition, detect that busbar voltage is less than piezoelectric voltage threshold value under battery, disconnect battery and forward battery off-state to;
Under battery off-state, regulate rectifier output voltage for expecting output voltage, if detect busbar voltage, reach desired output voltage, forward to and return to form in advance;
Under returning to form in advance, regulating rectifier output voltage is recovery voltage, if detect busbar voltage, reaches recovery voltage, adhesive battery forward normal condition to.
Described desired output voltage is that minimum cell voltage adds desired pressure differential V1 sum.The pressure that described desired output voltage the is less than power-supply system binding occurrence that powers on.Described recovery voltage is that minimum cell voltage deducts the poor of a recovery pressure reduction V2 gained.
The present invention also provides the another kind of power-on and power-off method of mixing, under allowing load and allow under under the configuration of battery,
Under normal condition, detect that busbar voltage is less than piezoelectric voltage threshold value under load, disconnecting consumers, is switched to load off-state;
Under load off-state, if detect, busbar voltage is more than or equal under load piezoelectric voltage threshold value and powers on return difference sum, adhesive load be switched to normal condition; If detect, busbar voltage is less than piezoelectric voltage threshold value under battery, disconnects battery and is switched to battery off-state;
Under battery off-state, regulate rectifier output voltage for expecting output voltage, if detect busbar voltage, reach desired output voltage, forward to and return to form in advance;
Under returning to form in advance, regulating rectifier output voltage is recovery voltage, if detect, busbar voltage reaches recovery voltage and load disconnects, adhesive battery forward load off-state to.
Described desired output voltage is that minimum cell voltage adds desired pressure differential V1 sum.The pressure that described desired output voltage the is less than power-supply system binding occurrence that powers on.Described recovery voltage is that minimum cell voltage deducts the poor of a recovery pressure reduction V2 gained.
The present invention also provides a kind of power-supply system, comprises rectifier group, control unit, and load and battery pack,
Rectifier group carries out delivering in busbar connection after rectification to exchanging input; Load is connected to busbar by the first circuit breaker; Battery pack is connected by the second circuit breaker with busbar, and battery pack is charged by busbar, or by busbar, powers to the load when not exchanging input;
Control unit, for monitoring busbar voltage, controls the output of rectifier group, and controls the conducting of first, second circuit breaker and close.
Described load comprises the one-level load for power-off when the lower load, and for the secondary loads of power-off when the lower battery, described one-level load is connected with busbar by the first circuit breaker.
Control unit monitors busbar voltage in normal condition and is less than piezoelectric voltage threshold value under load, disconnecting consumers forward load off-state to; If not, keep current normal condition constant.
Control unit, under load off-state, is more than or equal to piezoelectric voltage threshold value under load and adds the return difference sum that powers on if monitor busbar voltage, adhesive load forward normal condition to; Otherwise, detect busbar voltage and whether be less than piezoelectric voltage threshold value under battery, if so, disconnect battery and forward battery off-state to.
Control unit is under battery off-state, and regulating rectifier output voltage is that minimum cell voltage adds desired pressure differential V1 sum, expects output voltage, monitors busbar voltage and reach the desired output voltage of rectifier, forwards in advance and returns to form;
Under returning to form in advance, regulating rectifier output voltage is that minimum cell voltage subtracts the difference of recovering pressure reduction V2, i.e. recovery voltage; Detect busbar voltage and whether reach recovery voltage, if adhesive battery forward load off-state to; Otherwise, keep current return to form in advance constant.
Control unit monitors busbar voltage in normal condition and is less than piezoelectric voltage threshold value under battery, disconnects battery and forwards battery off-state to;
Under battery off-state, regulating rectifier output voltage is that minimum cell voltage adds desired pressure differential V1 sum, expects output voltage, monitors busbar voltage and reach the desired output voltage of rectifier, forwards in advance and returns to form;
Under returning to form in advance, regulating rectifier output voltage is that minimum cell voltage subtracts the difference of recovering pressure reduction V2, i.e. recovery voltage; Detect busbar voltage and whether reach recovery voltage, if adhesive battery, battery in realization.
Power-supply system of the present invention and mixing power-on and power-off control method, electricity under power-supply system is divided into lower load and the control of lower battery two-stage, and can arrange and realize separately a kind of lower electric control or lower load mixes control with lower battery by parameter, there is good versatility; After first heightening rectifier output voltage before the return difference that powers on, battery adhesive, reduce the methods such as output voltage in addition, the problem such as large immediate current while having solved the system repeatedly power-on and power-off that occur in practical application, battery adhesive, has good reliability again.
Accompanying drawing explanation
Fig. 1 is the general flow chart of power-on and power-off control method of the present invention;
Fig. 2 is state transition diagram in power-on and power-off control procedure of the present invention;
Fig. 3 only allows state transition diagram in the power-on and power-off control procedure of lower mode of loading;
Fig. 4 only allows state transition diagram in the power-on and power-off control procedure of lower battery mode;
Fig. 5 is state transition diagram in the lower load of permission and the power-on and power-off control procedure that allows lower battery mode;
Fig. 6 is the flow chart of power-on and power-off control in specific embodiment;
Fig. 7 is power system structure schematic diagram of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
The present invention relates to electricity or battery and load mixing power-on and power-off mode under battery, by the pressure regulation strategy of the safety and stability taked after lower electricity and before powering on, guaranteed the high reliability of power-on and power-off control procedures.The present invention is on the basis of existing load, battery power-on and power-off control method, by more safe and effective design measure, the problems such as the system concussion that occurs in practical application, the impact of adhesive instantaneous large-current have thoroughly been solved, and integrate the control procedure of lower load and lower battery, be a kind of technical scheme of mixing control, power-on and power-off control that reliability is high.
What the present invention can realize general load and battery mixes power-on and power-off control.Basic scheme is as follows: structure can the secondary of arbitrary disposition under electric control loop, while guaranteeing that cell voltage drops to setting threshold, can cut off load or cell circuit, protection battery; For safety, realize efficiently power-on and power-off control, increased multinomial mechanism and guaranteed safe lower electricity, power in time: for example battery recovers judgment mechanism in advance, return difference mechanism.
The core key point of power-on and power-off control program of the present invention, comprising:
(1) electric control under the two-stage of the load of support arbitrary disposition, battery, while guaranteeing that cell voltage drops to setting threshold, can cut off load or cell circuit, to protect safely battery; (2) with battery, recovering in advance judgment mechanism avoids causing battery lower electric possibility repeatedly because of rectifier off-capacity; (3) by return difference mechanism, the safety of the system while guaranteeing to power on conditions permit powers on.
Power-on and power-off control program of the present invention, when specific implementation, has following features:
A) under lower load and lower battery two-stage, electric control process all has and independently descends piezoelectric voltage threshold value, permission/forbid parameter, and return difference parameter powers in lower load control;
B) system that has again lower battery to need for existing lower load, can allow under two-stage electricity to realize the control that mixes of lower load and lower battery simultaneously, and must meet the constraint of lower load prior to lower battery, under load, piezoelectric voltage threshold value will be higher than piezoelectric voltage threshold value under battery;
C) for the system of only having separately lower load or lower battery requirements, can be by forbidding that relative lower electric mode and the corresponding alarm of shielding realize independent lower electric control;
D) the lower electric condition of lower load and lower battery mode is, busbar voltage drop during to above-mentioned lower piezoelectric voltage threshold value, starts lower electric process;
E) in lower electric process, judge and allow/forbid whether parameter is enable state, be to carry out lower electric instruction, otherwise will not carry out.
Wherein, the condition of powering on of lower mode of loading is, system has electricity, and detects busbar voltage and be greater than under above-mentioned load piezoelectric voltage threshold value and add above-mentioned powering on during return difference, recovers load and powers on, otherwise will not recover.
Wherein, the condition of powering on of lower battery mode is, regulates and detects rectifier output voltage than the high Δ V1 of minimum cell voltage, while reaching desired output voltage, starts recovery process, enters in advance and returns to form, otherwise will not recover; Under returning to form in advance, regulate and detect rectifier output voltage than the low Δ V2 of minimum cell voltage, while reaching recovery voltage, carry out the instruction that powers on of upper battery.
As shown in Figure 2, the present invention is divided into four kinds by the system mode of power-supply system: normal condition, load off-state, battery off-state and return to form in advance.Need be through repeatedly judging the certain switching state of consistent ability when power-supply system is carried out system mode conversion.
The present invention is the configuration mode to lower load and lower battery according to power-supply system, has proposed the technical scheme of power-on and power-off, comprises following three kinds: the first, the configuration mode of load under only allowing; The second, the configuration mode of battery under only allowing; The third, the configuration mode of load and the lower battery of permission under allowing.Below in conjunction with Fig. 1 and Fig. 3, Fig. 4, Fig. 5, be elaborated respectively.
The first, for the configuration mode that only allows lower load,
If under normal condition, detect that busbar voltage is less than piezoelectric voltage threshold value under load, disconnecting consumers is switched to load off-state; If under load off-state, detect that busbar voltage is more than or equal under load piezoelectric voltage threshold value and powers on return difference sum, adhesive load be switched to normal condition.
As shown in Figure 3, provided the state transition graph of upward and downward electric process while only allowing lower mode of loading.
Under normal condition: when system starts, initialization enters normal condition, regulating rectifier output voltage is floating charge or even charging voltage.If allow lower load, detect busbar voltage and whether be less than piezoelectric voltage threshold value under load, if so, disconnecting consumers forward load off-state to; If not, keep current normal condition constant.
Under load off-state:
Regulate rectifier desired output voltage for all filling or float charge voltage; System has electricity, and detects busbar voltage and whether be more than or equal to piezoelectric voltage threshold value under load and add the return difference sum that powers on, if so, adhesive load forward normal condition to; Otherwise, keep current load off-state constant.
Herein, after lower load, after general battery stops discharging, terminal voltage has certain bounce-back rising.In the present invention, require busbar voltage to be more than or equal to piezoelectric voltage threshold value under load and add the return difference sum that powers on, just can avoid power-supply system because powering on of causing of cell voltage bounce-back by mistake, protection system does not produce concussion.
The second, for the configuration mode that only allows lower battery,
If under normal condition, detect that busbar voltage is less than piezoelectric voltage threshold value under battery, disconnect battery and forward battery off-state to; Under battery off-state, regulate rectifier output voltage for expecting output voltage, if detect busbar voltage, reach desired output voltage, forward to and return to form in advance; Under returning to form in advance, regulating rectifier output voltage is recovery voltage, if detect busbar voltage, reaches recovery voltage, adhesive battery forward normal condition to.
As shown in Figure 4, provided the state transition graph of upward and downward electric process while only allowing lower battery mode.
Under normal condition:
When system starts, initialization enters normal condition.Regulating rectifier output voltage is floating charge or even charging voltage;
If only allow lower battery, detect busbar voltage and whether be less than piezoelectric voltage threshold value under battery, if so, disconnect battery and forward battery off-state to; Otherwise, keep current normal condition constant.
Under battery off-state:
Regulating rectifier output voltage is that minimum cell voltage adds desired pressure differential V1 sum, expects output voltage, and this desired output voltage is less than forces to power on binding occurrence.
Wherein, the binding occurrence of forcing to power on is used being equipped with hardware to force in the system of electrifying device, does not have the system being equipped with not use.Force electrifying device to be independent of software control process, it detects when busbar voltage is greater than certain magnitude of voltage (forcing to power on binding occurrence) can force adhesive battery, and object is in order to prevent that software error from causing cannot recovering to power on after lower electricity.
Detect busbar voltage and whether reach desired output voltage, if so, forward in advance and return to form; Otherwise, keep current battery off-state constant.
Wherein, because battery under this state still disconnects with busbar, if it must be to exchange to have recovered power supply that busbar has voltage, if busbar voltage can rise to expectation voltage, the power that rectifier is described can also keep the high about V1 of voltage ratio battery minimum voltage (desired pressure differential) under the prerequisite for present load power supply, proves that rectifier also has extra ability to charge the battery.Now recover again battery and power on, just can avoid system to cause playing again after upper battery the misoperation of battery because of rectifier off-capacity.
Return to form down in advance:
Regulating rectifier output voltage is that minimum cell voltage deducts the poor of a recovery pressure reduction V2 gained, i.e. recovery voltage, and retrain output voltage in the nominal output area of rectifier;
Detect busbar voltage and whether reach recovery voltage, if so, adhesive battery forward normal condition to; Otherwise, keep current and return to form in advance constantly, finish.
Wherein, busbar voltage can reach recovery voltage, illustrate that busbar voltage has been adjusted to minimum cell voltage, now again during adhesive battery, busbar voltage and cell voltage do not have larger pressure reduction, just can not produce the large electric current of adhesive moment, avoid damaging attracting device and other accident that may cause because of instantaneous large-current yet.
The third, under the configuration for battery under load under allowing and permission,
Under normal condition, detect that busbar voltage is less than piezoelectric voltage threshold value under load, disconnecting consumers, is switched to load off-state; Under load off-state, if detect, busbar voltage is more than or equal under load piezoelectric voltage threshold value and powers on return difference sum, adhesive load be switched to normal condition; If detect, busbar voltage is less than piezoelectric voltage threshold value under battery, disconnects battery and is switched to battery off-state; Under battery off-state, regulate rectifier output voltage for expecting output voltage, if detect busbar voltage, reach desired output voltage, forward to and return to form in advance; Under returning to form in advance, regulating rectifier output voltage is recovery voltage, if detect, busbar voltage reaches recovery voltage and load disconnects, adhesive battery forward load off-state to.
As shown in Figure 5, provided the state transition graph of upward and downward electric process when not only allowing lower load but also allow lower battery mode.
Under normal condition:
When system starts, initialization enters normal condition, and regulating rectifier output voltage is floating charge or even charging voltage;
If allow lower load, detect busbar voltage and whether be less than piezoelectric voltage threshold value under load, if so, disconnecting consumers forward load off-state to; If not, keep current normal condition constant.
Herein, first check and whether allow lower load to guarantee that time mode of loading has precedence over lower battery mode; In practical application, under lower battery mode, after electricity, all loads all can not be worked and still can the work of reserve part important load after electricity under lower mode of loading, so from the viewpoint of the importance of load, be generally first to descend time battery after load.
Under load off-state:
Regulate rectifier desired output voltage for all filling or float charge voltage;
If system has electricity, detect busbar voltage and whether be more than or equal to piezoelectric voltage threshold value under load and add the return difference sum that powers on, if so, adhesive load forward normal condition to; Otherwise, detect busbar voltage and whether be less than piezoelectric voltage threshold value under battery, if so, disconnect battery and forward battery off-state to; If busbar voltage is greater than under battery piezoelectric voltage threshold value and is less than piezoelectric voltage threshold value under load, add the return difference sum that powers on, keep current load off-state constant.
Under battery off-state:
Regulating rectifier output voltage is that minimum cell voltage adds desired pressure differential V1 sum, expects output voltage, and this desired output voltage is less than forces to power on binding occurrence.
Wherein, the binding occurrence of forcing to power on is used being equipped with hardware to force in the system of electrifying device, does not have the system being equipped with not use.Force electrifying device to be independent of software control process, it detects when busbar voltage is greater than certain magnitude of voltage (forcing to power on binding occurrence) can force adhesive battery, and object is in order to prevent that software error from causing cannot recovering to power on after lower electricity.
Detect the desired output voltage whether busbar voltage reaches rectifier, if so, forward in advance and return to form; Otherwise, keep current battery off-state constant.
Wherein, because battery under this state still disconnects with busbar, if it must be to exchange to have recovered power supply that busbar has voltage, if busbar voltage can rise to expectation voltage, the power that rectifier is described can also keep the high about V1 of voltage ratio battery minimum voltage (desired pressure differential) under the prerequisite for present load power supply, proves that rectifier also has extra ability to charge the battery.Now recover again battery and power on, just can avoid system to cause playing again after upper battery the misoperation of battery because of rectifier off-capacity.
Return to form down in advance:
Regulating rectifier output voltage is that minimum cell voltage subtracts the difference of recovering pressure reduction V2, i.e. recovery voltage, and retrain output voltage in the nominal output area of rectifier; Detect busbar voltage and whether reach recovery voltage, if adhesive battery forward load off-state to; Otherwise, keep current and return to form in advance constantly, finish.
Wherein, busbar voltage can reach recovery voltage, illustrate that busbar voltage has been adjusted to minimum cell voltage, now again during adhesive battery, busbar voltage and cell voltage do not have larger pressure reduction, just can not produce the large electric current of adhesive moment, avoid damaging attracting device and other accident that may cause because of instantaneous large-current yet.
Embodiment 1:
While supposing practical application, the configuration of certain DC communication power system is as follows:
System float charge voltage is 53.5V, and even charging voltage is 56.4V, rectifier output voltage 53.5V, and a group storage battery voltage 53V, the less important load of system is connected to lower load end, and important load is direct-connected on busbar;
Allow lower load, electric threshold value 47V under load; Allow lower battery, electric threshold value 46V under battery; The return difference that powers on is 5V.
In addition, supposing the system has hardware electrifying device and the upper piezoelectric voltage of pressure is 52.5V.The desired pressure differential V1 of battery off-state is 2V, and the recovery pressure reduction V2 returning to form is in advance 0.2V.
The power-on and power-off control flow chart of embodiment 1 as shown in Figure 6.
Beginning system is in normal condition:
When system exchanges during input fault, rectifier stops output, and system busbar voltage determines by cell voltage, and battery starts electric discharge and voltage slow decreasing, but higher than 47V; Control procedure checks that under load, electricity allows, and detects busbar voltage and is greater than electric threshold value under load; Check that under battery, electricity allows, busbar voltage is greater than electric threshold value under battery.In this process, system is still in normal condition.
When battery discharge makes cell voltage be down to 47V, power-on and power-off control procedure checks that under load, electricity allows, and detects busbar voltage lower than 47V, meets electric condition under load, carries out disconnecting consumers operation, is switched to load off-state.
Cut off after load, battery is only to important load power supply, and voltage may slightly rise, to 47.2V.If (there is no important load, the cell voltage 2V that may rise at most, the row's of making voltage is 49V, the erroneous judgement that also can not cause load to power on.)
In load off-state,
It is abnormal that system detects Alternating Current Power Supply, and electricity under the poor permission of inspection battery, detects busbar voltage higher than 46V, continues to keep load off-state.
When battery continuation electric discharge allows cell voltage be down to 46V, it is abnormal that system detects Alternating Current Power Supply, and electricity under the poor permission of inspection battery, detects busbar voltage lower than 46V, disconnects battery, and is switched to battery off-state.Disconnect after battery, battery stops heavy-current discharge, and cell voltage may have certain rising after disconnection, to 47.5V.
In battery off-state,
Regulating the voltage of rectifier output is 49.5V, and checks that 49.5V is less than hardware and forces upper piezoelectric voltage 52.5V; Then detecting busbar voltage is 0V, continues to keep battery off-state.After one hour, Alternating Current Power Supply is normal, and rectifier is started working, and output voltage regulates from the low target voltage toward 49.5V, starts to power to important load.Because the rectifier capacity being equipped with is enough, rectifier voltage has the ability to rise to 49.5V.
In battery off-state, system is still 49.5V to the adjusting of rectifier, and detect busbar voltage is 49.5V simultaneously, is switched in advance and returns to form.If (busbar voltage can not rise near 49V, illustrates that the ability of rectifier can not load-carryingly also charge the battery, and this situation battery that closes can cause again electricity under battery at once simultaneously.)
Return to form down in advance,
System regulates rectifier output voltage to 47.3V, and when then detecting busbar voltage and being slowly down to 47.8V, check and allow electricity under load, adhesive battery, and be switched to load off-state.(rectifier output 47.8V and cell voltage 47.3V pressure reduction are little, and adhesive battery can not cause large attract current.)
After adhesive battery, under load off-state, it is 56.4V that system regulates rectifier output voltage, but now rectifier is except to also charging the battery important load power supply, and in order to make charging current mild, restriction rectifier is output as 48.5V.Detect so busbar voltage and add return difference 5V lower than piezoelectric voltage 47V under load, keep load off-state constant.
Along with battery charging capacity is recovered, cell voltage rising, the deboost of rectifier also slowly raises, and certain moment is increased to 52V.
Under load off-state,
It is 56.4V that system regulates rectifier output voltage, and charging restriction rectifier is output as 52V; Then detect busbar voltage and be greater than piezoelectric voltage 47V under load and add return difference 5V, be switched to normal condition.
Under normal condition, regulating rectifier voltage is equal float charge voltage.
As shown in Figure 7, provided the structural representation of the power-supply system that adopts power-on and power-off control method of the present invention, having comprised: rectifier group, control unit, load and battery pack, load can be divided into again one-level load and secondary loads.
Rectifier group, for incoming transport electricity, carries out delivering in busbar connection after rectification to exchanging input;
Load is connected to busbar, from busbar, obtains input; Load can be connected to busbar by the first circuit breaker.
Battery pack is connected by the second circuit breaker with busbar, and battery pack can be charged by busbar, or by busbar, powers to the load when not exchanging input.
Control unit, for monitoring busbar voltage, controls the output of rectifier group, and controls the conducting of first, second circuit breaker and close.
Control unit monitors busbar voltage in normal condition and is less than piezoelectric voltage threshold value under load, disconnecting consumers forward load off-state to; If not, keep current normal condition constant.
Under load off-state, if monitor busbar voltage, be more than or equal to piezoelectric voltage threshold value under load and add the return difference sum that powers on, adhesive load forward normal condition to; Otherwise, detect busbar voltage and whether be less than piezoelectric voltage threshold value under battery, if so, disconnect battery and forward battery off-state to;
Under battery off-state, it is that minimum cell voltage adds desired pressure differential V1 sum that control unit regulates rectifier output voltage, expects output voltage, and this desired output voltage is less than forces to power on binding occurrence.Monitor the desired output voltage that busbar voltage reaches rectifier, forward in advance and return to form;
The lower battery that returns to form in advance still disconnects with busbar, if it must be to exchange to have recovered power supply that busbar has voltage, regulating rectifier output voltage is that minimum cell voltage subtracts the difference of recovering pressure reduction V2, i.e. recovery voltage, and retrain output voltage in the nominal output area of rectifier; Detect busbar voltage and whether reach recovery voltage, if adhesive battery forward load off-state to; Otherwise, keep current and return to form in advance constantly, finish.
For load, be generally communication equipment, load can be divided into two classes, and a class can following load, is called one-level load, another kind ofly can not descend load, is called secondary loads.When lower load, only need one-level load to carry out lower load, and secondary loads is generally compared with visual plant, can be after lower load, continue to utilize battery to power to secondary loads, and reaching after lower battery condition battery-operated under carrying out again.Thereby, can only the first circuit breaker be connected with one-level load.
In this power-supply system, for only allowing lower load or only allowing the application scenarios of lower battery, can be according to lower loading condition, and lower battery condition is directly carried out power-on and power-off control.That is:
Control unit monitors busbar voltage in normal condition and is less than piezoelectric voltage threshold value under load, disconnecting consumers forward load off-state to; Under load off-state, if monitor busbar voltage, be more than or equal to piezoelectric voltage threshold value under load and add the return difference sum that powers on, adhesive load forward normal condition to.
Control unit monitors busbar voltage in normal condition and is less than piezoelectric voltage threshold value under battery, disconnects battery and forwards battery off-state to; While powering on, reaching after desired output voltage, enter in advance and return to form, when the busbar voltage that returns to form in advance reaches recovery voltage, adhesive battery, battery in realization.
The control procedure of electricity under the present invention is integrated under load electricity and battery, built can the secondary of arbitrary disposition under electric control loop, while guaranteeing that cell voltage drops to setting threshold, can cut off load or cell circuit; For safety, realize efficiently power-on and power-off control, increased multinomial mechanism and guaranteed safe lower electricity, power in time: battery recovers judgment mechanism in advance, return difference mechanism.Overcome so the serious practical problems such as the vibration in common system, instantaneous large-current impact, made this method safe, general, reliable, except protecting better battery, also can recover to a greater degree load supplying.
The foregoing is only embodiments of the invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present invention.
Claims (14)
1. mix power-on and power-off methods, it is characterized in that, under only allowing under the configuration of battery,
If under normal condition, detect that busbar voltage is less than piezoelectric voltage threshold value under battery, disconnect battery and forward battery off-state to;
Under battery off-state, regulate rectifier output voltage for expecting output voltage, if detect busbar voltage, reach desired output voltage, forward to and return to form in advance;
Under returning to form in advance, regulating rectifier output voltage is recovery voltage, if detect busbar voltage, reaches recovery voltage, adhesive battery forward normal condition to.
2. the method for claim 1, is characterized in that,
Described desired output voltage is that minimum cell voltage adds desired pressure differential V1 sum.
3. method as claimed in claim 1 or 2, is characterized in that, the pressure that described desired output voltage the is less than power-supply system binding occurrence that powers on.
4. the method for claim 1, is characterized in that,
Described recovery voltage is that minimum cell voltage deducts the poor of a recovery pressure reduction V2 gained.
5. mix power-on and power-off methods, it is characterized in that, under allowing load and allow under under the configuration of battery,
Under normal condition, detect that busbar voltage is less than piezoelectric voltage threshold value under load, disconnecting consumers, is switched to load off-state;
Under load off-state, if detect, busbar voltage is more than or equal under load piezoelectric voltage threshold value and powers on return difference sum, adhesive load be switched to normal condition; If detect, busbar voltage is less than piezoelectric voltage threshold value under battery, disconnects battery and is switched to battery off-state;
Under battery off-state, regulate rectifier output voltage for expecting output voltage, if detect busbar voltage, reach desired output voltage, forward to and return to form in advance;
Under returning to form in advance, regulating rectifier output voltage is recovery voltage, if detect, busbar voltage reaches recovery voltage and load disconnects, adhesive battery forward load off-state to.
6. method as claimed in claim 5, is characterized in that,
Described desired output voltage is that minimum cell voltage adds desired pressure differential V1 sum.
7. the method as described in claim 5 or 6, is characterized in that, the pressure that described desired output voltage the is less than power-supply system binding occurrence that powers on.
8. method as claimed in claim 5, is characterized in that,
Described recovery voltage is that minimum cell voltage deducts the poor of a recovery pressure reduction V2 gained.
9. a power-supply system, comprises rectifier group, control unit, and load and battery pack,
Rectifier group carries out delivering in busbar connection after rectification to exchanging input; Load is connected to busbar by the first circuit breaker; Battery pack is connected by the second circuit breaker with busbar, and battery pack is charged by busbar, or by busbar, powers to the load when not exchanging input;
Control unit, for monitoring busbar voltage, controls the output of rectifier group, and controls the conducting of first, second circuit breaker and close;
Control unit is under battery off-state, and regulating rectifier output voltage is that minimum cell voltage adds desired pressure differential V1 sum, expects output voltage, monitors busbar voltage and reach the desired output voltage of rectifier, forwards in advance and returns to form.
10. power-supply system as claimed in claim 9, is characterized in that,
Described load comprises the one-level load for power-off when the lower load, and for the secondary loads of power-off when the lower battery, described one-level load is connected with busbar by the first circuit breaker.
11. power-supply systems as claimed in claim 9, is characterized in that
Control unit monitors busbar voltage in normal condition and is less than piezoelectric voltage threshold value under load, disconnecting consumers forward load off-state to; If not, keep current normal condition constant.
12. power-supply systems as claimed in claim 11, is characterized in that
Control unit, under load off-state, is more than or equal to piezoelectric voltage threshold value under load and adds the return difference sum that powers on if monitor busbar voltage, adhesive load forward normal condition to; Otherwise, detect busbar voltage and whether be less than piezoelectric voltage threshold value under battery, if so, disconnect battery and forward battery off-state to.
13. power-supply systems as claimed in claim 12, is characterized in that,
Under returning to form in advance, regulating rectifier output voltage is that minimum cell voltage subtracts the difference of recovering pressure reduction V2, i.e. recovery voltage; Detect busbar voltage and whether reach recovery voltage, if adhesive battery forward load off-state to; Otherwise, keep current return to form in advance constant.
14. power-supply systems as claimed in claim 9, is characterized in that,
Control unit monitors busbar voltage in normal condition and is less than piezoelectric voltage threshold value under battery, disconnects battery and forwards battery off-state to;
Under returning to form in advance, regulating rectifier output voltage is that minimum cell voltage subtracts the difference of recovering pressure reduction V2, i.e. recovery voltage; Detect busbar voltage and whether reach recovery voltage, if adhesive battery, battery in realization.
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| CN201010556452.XA CN102480138B (en) | 2010-11-22 | 2010-11-22 | Power system and hybrid power-on and power-down control method |
| PCT/CN2011/077544 WO2012068896A1 (en) | 2010-11-22 | 2011-07-25 | Power supply system and power-on/off control method |
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| CN201010556452.XA CN102480138B (en) | 2010-11-22 | 2010-11-22 | Power system and hybrid power-on and power-down control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109271114A (en) * | 2018-10-11 | 2019-01-25 | 郑州云海信息技术有限公司 | A kind of method and control equipment of output control |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106464128B (en) * | 2016-05-23 | 2019-05-28 | 深圳市锐明技术股份有限公司 | A kind of power failure protection of equipment circuit |
| CN107834612A (en) * | 2016-09-14 | 2018-03-23 | 航天科工惯性技术有限公司 | For with the Power Supply Monitoring instrument and method for boring instrument |
| CN108919871A (en) * | 2017-03-30 | 2018-11-30 | 立锜科技股份有限公司 | power transmission device |
| CN108762137B (en) * | 2018-05-17 | 2020-08-04 | 广东美的制冷设备有限公司 | Intelligent power-off method and device for intelligent socket, intelligent socket and storage medium |
| CN109234788A (en) * | 2018-08-03 | 2019-01-18 | 诚亿电子（嘉兴）有限公司 | Except glue regenerating device visual inspection method |
| CN113193638B (en) * | 2021-05-06 | 2023-01-20 | 中国联合网络通信集团有限公司 | Power supply control method, device, equipment and storage medium |
| CN113824177B (en) * | 2021-08-06 | 2024-08-16 | 深圳市格瑞普电池有限公司 | Safety connection device and emergency starting power supply |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328122Y (en) * | 1998-05-29 | 1999-07-07 | 王渊 | Special converter for wind and solar power generation |
| CN2527058Y (en) * | 2001-08-17 | 2002-12-18 | 钟桂生 | Emergent lamp for controlling fire |
| CN101442209A (en) * | 2007-11-22 | 2009-05-27 | 威海科益达电子有限公司 | Cascade combined protection equilibrium module for large-capacity lithium ion battery |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449926C (en) * | 2004-10-11 | 2009-01-07 | 华为技术有限公司 | System of communication power supply |
| JP2006223050A (en) * | 2005-02-10 | 2006-08-24 | Ntt Facilities Inc | Power supply system |
| JP4615439B2 (en) * | 2005-12-28 | 2011-01-19 | 株式会社Ｎｔｔファシリティーズ | Secondary battery management device, secondary battery management method and program |
| CN201104347Y (en) * | 2007-11-23 | 2008-08-20 | 中达电通股份有限公司 | Communication power supply |
-
2010
- 2010-11-22 CN CN201010556452.XA patent/CN102480138B/en active Active
-
2011
- 2011-07-25 WO PCT/CN2011/077544 patent/WO2012068896A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328122Y (en) * | 1998-05-29 | 1999-07-07 | 王渊 | Special converter for wind and solar power generation |
| CN2527058Y (en) * | 2001-08-17 | 2002-12-18 | 钟桂生 | Emergent lamp for controlling fire |
| CN101442209A (en) * | 2007-11-22 | 2009-05-27 | 威海科益达电子有限公司 | Cascade combined protection equilibrium module for large-capacity lithium ion battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109271114A (en) * | 2018-10-11 | 2019-01-25 | 郑州云海信息技术有限公司 | A kind of method and control equipment of output control |
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| CN102480138A (en) | 2012-05-30 |
| WO2012068896A1 (en) | 2012-05-31 |
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