CN105048605A - Online storage battery pack delayed battery emergency assistant system and working methods thereof - Google Patents
Online storage battery pack delayed battery emergency assistant system and working methods thereof Download PDFInfo
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Abstract
The invention provides an online storage battery pack delayed battery emergency assistant system and working methods thereof and belongs to the power electronic field. The method is applied to a series-connected battery pack connected with a load and a switching power source. The system comprises an acquisition and control module, a power transformation module and an output switch array module, wherein the power transformation module and the output switch array module are both connected with the acquisition and control module, and the output switch array module is connected between the power transformation module and a storage battery pack. The working methods include a delayed battery positioning method and a capacity assistant method. With the online storage battery pack delayed battery emergency assistant system and working methods adopted, a problem that a delayed battery in the storage battery pack decides the capacity of the whole storage battery pack can be solved, and a storage battery pack emergency power supply ability can be improved.
Description
Technical field
The present invention relates to field of power electronics, in particular to a kind of batteries behindhand battery emergency response assistant system and method for work thereof.
Background technology
In recent years, the high-tension storage battery of high-energy is widely applied, and by the formation batteries that multiple high-energy high voltage battery is together in series, can be used on the high-tension devices of needs such as such as electric motor car.
Inventor finds under study for action, in the middle of prior art, backup type large-capacity battery group is with the form work of storage battery series connection equally, therefore the capacity of whole group storage battery equals the monomer capacity of minimum storage battery, if when there is lagging batteries in batteries, then the whole volume of batteries can be limited by the capacity of lagging batteries, on the other hand, the working method of existing series-connected batteries, the degree of discharge of uncontrollable lagging batteries, the maximum available of lagging batteries is made constantly to reduce like this, thus had a strong impact on the power supply supportability of backup batteries.
Summary of the invention
In view of this, the object of the embodiment of the present invention is to provide a kind of storage battery behindhand battery emergency response assistant system and method for work thereof, to improve the problem that behindhand battery in batteries determines whole cell set capacity, reduce the discharge capacity of behindhand battery, provide batteries emergency service to ensure.
The embodiment of the present invention is achieved in that
First aspect, embodiments provide a kind of batteries behindhand battery emergency response assistant system, be applied to the series-connected batteries being connected with load and Switching Power Supply, described system comprises: data acquisition and controlling module, power conversion modules and output switch array module, and described power conversion modules is all connected with described data acquisition and controlling module with described output switch array module; Described output switch array module is connected between described power conversion modules 202 and described storage battery;
Described data acquisition and controlling module is for gathering the electric quantity signal of each storage battery in described batteries, the storage battery selecting electricity in described batteries minimum, as behindhand battery, controls described output switch array module and switches to the state being communicated with described power conversion modules and described behindhand battery;
Described power conversion modules is used for, by adjustment output current, charging to described behindhand battery, makes the voltage of described behindhand battery reach average voltage in described batteries.
In conjunction with first aspect, embodiments provide the first possible execution mode of first aspect, wherein, described data acquisition and controlling module comprises single-chip microcomputer, pwm chip, analog-digital chip and for driving the transformer of relay, described analog-digital chip is connected with described single-chip microcomputer, described pwm chip is connected with described analog-digital chip, described transformer is connected with described pwm chip by the transistor group for amplified current, described single-chip microcomputer is connected with described batteries, described transformer is connected with described output switch array module by divider resistance.
In conjunction with the first possible execution mode of first aspect, embodiments provide the execution mode that the second of first aspect is possible, wherein, described single-chip microcomputer is also connected with the indicating circuit for display working condition, described indicating circuit comprises multiple light-emitting diode, each described light-emitting diode is in series with pressure limiting resistance respectively, and each described pressure limiting resistance is all connected with power supply.
In conjunction with the first possible execution mode of first aspect, embodiments provide the third possible execution mode of first aspect, wherein, described transistor group comprises a NPN type triode and a PNP type triode, described NPN type triode and described PNP type triode common base and emitter, the base stage of described NPN type triode is all connected with described pwm chip by current-limiting resistance with the base stage of described PNP type triode, and the emitter of described NPN type triode is all connected with described transformer with the emitter of described PNP type triode.
In conjunction with the first possible execution mode of first aspect, embodiments provide the 4th kind of possible execution mode of first aspect, wherein, described power conversion modules comprises soft start relay, the fly-wheel diode be connected with described soft start relay, described soft start relay is connected to switch MOS FET by capacitance and derided capacitors and drives triode, described driving triode is connected with high frequency transformer, described high frequency transformer is connected with current sensor by filter capacitor, described soft start relay is connected with bus input, described current sensor is connected with described single-chip microcomputer.
In conjunction with the 4th kind of possible execution mode of first aspect, embodiments provide the 5th kind of possible execution mode of first aspect, wherein, described output switch array module comprises the switch for selective relay, and described switch one end is connected to storage battery in described batteries, one end is connected to described soft start relay.
Second aspect, the embodiment of the present invention additionally provides a kind of method of work of online batteries behindhand battery emergency response assistant system, comprises behindhand battery localization method and capacity householder method;
Described behindhand battery localization method comprises:
Gather the electric quantity signal of each storage battery in batteries;
The storage battery selecting electricity in described batteries minimum as behindhand battery, and marks behindhand battery;
Described capacity householder method comprises:
Control described output switch array module and switch to the state being communicated with described power conversion modules and described behindhand battery;
Adjust the output current of described power conversion modules, described behindhand battery is charged, make the voltage of described behindhand battery reach average voltage in batteries.
In conjunction with second aspect, embodiments provide the first possible execution mode of second aspect, wherein, described electric quantity signal comprises voltage, the storage battery selecting electricity in described batteries minimum as behindhand battery, and marks behindhand battery, comprising:
The voltage reference value of each battery is calculated according to the potentiometer of each battery;
The quantity battery obtained in batteries according to battery rated voltage and cell falls behind pressure limit;
The voltage of each battery is made comparisons with described voltage reference value respectively, if terminal voltage is lower than described voltage reference value, then falls behind with described-battery and press limit to make comparisons;
If terminal voltage is less than described voltage reference value and described battery is backward press the difference limit, be then labeled as behindhand battery.
In conjunction with the first possible execution mode of second aspect, embodiments provide the execution mode that the second of second aspect is possible, wherein, the described potentiometer according to each battery calculates the voltage reference value of each battery, comprise: by Uif=(U1+U2+U3+ ... + Un)/n-Ui/n, calculate the nonego average voltage of each battery, using the voltage reference value of described nonego average voltage as each battery, wherein, Uif is nonego average voltage, Ui is the magnitude of voltage of storage battery i in described batteries, and n is the quantity of the storage battery in described batteries;
The quantity battery obtained in batteries of the described rated voltage according to storage battery each in described batteries and storage battery falls behind pressure limit, comprising: by Ur=storage battery rated voltage/n, Ur is fallen behind pressure limit as battery.
In conjunction with second aspect, embodiments provide the third possible execution mode of second aspect, wherein, described capacity householder method comprises:
Batteries total voltage and the discharge cut-off voltage preset are made comparisons, if batteries total voltage is lower than described discharge cut-off voltage, then start up system shutdown protection;
Control behindhand battery described in output switch array module gating;
Using the target regulated voltage of the equal threshold voltage of batteries as described behindhand battery, by closed loop control algorithm regulating power conversion module output current, behindhand battery is compensated.
A kind of storage battery behindhand battery emergency response assistant system that the embodiment of the present invention provides and method of work thereof, adopt power conversion and synchronous rectification, set up the behindhand battery auxiliary system in batteries, and adopt single-chip microcomputer as control chip, carry out the capacity aid decision in batteries discharge process, improve the problem that behindhand battery in batteries determines whole cell set capacity, conversion is with other energy content of battery of group, reduce behindhand battery discharge capacity, batteries emergency service is provided to ensure, the whole volume of batteries can be made to be greater than the capacity of backward cell batteries.
For making above-mentioned purpose of the present invention, feature and advantage become apparent, preferred embodiment cited below particularly, and coordinate appended accompanying drawing, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present invention, therefore should not be viewed as the restriction to scope, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 shows a kind of system on-line operation mode schematic diagram that the embodiment of the present invention provides;
Fig. 2 shows a kind of system composition schematic diagram that the embodiment of the present invention provides;
Fig. 3 shows the circuit diagram of a kind of system power conversion module that the embodiment of the present invention provides;
Fig. 4 shows the circuit diagram of a kind of system acquisition that the embodiment of the present invention provides and control module;
Fig. 5 shows a kind of behindhand battery localization method flow chart that the embodiment of the present invention provides;
Fig. 6 shows a kind of capacity aided process flow sheet figure that the embodiment of the present invention provides.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1,
In the middle of prior art, backup type large-capacity battery group is with the form work of storage battery series connection equally, therefore the capacity of whole group storage battery equals the monomer capacity of minimum storage battery, if when there is lagging batteries in battery pack, then the whole volume of batteries can be limited by the capacity of lagging batteries, the working method of existing series-connected batteries, the degree of discharge of uncontrollable lagging batteries, make the maximum available of lagging batteries constantly reduce like this, thus have a strong impact on the power supply supportability of backup batteries.
Based on this, as Figure 1-Figure 4, the invention provides a kind of online batteries behindhand battery emergency response assistant system, be applied in the series-connected batteries being connected with load 101 and Switching Power Supply 102, wherein, Switching Power Supply 102 is in parallel with load 101 and online lagging batteries emergency response assistant system respectively, under normal circumstances, Switching Power Supply 102 is as the power supply of load 101, floating charge is carried out to batteries simultaneously, when Switching Power Supply 102 disconnects, the power supply as load 101 is switched by batteries, and, online lagging batteries emergency response assistant system is selected behindhand battery and is charged to behindhand battery, thus decrease the discharge capacity of behindhand battery, batteries emergency service is provided to ensure, the whole volume of batteries can be made to be greater than the capacity of backward cell batteries.Described system comprises: data acquisition and controlling module 201, power conversion modules 202 and output switch array module 203, and described power conversion modules 202 is all connected with described data acquisition and controlling module 201 with described output switch array module 203; Described output switch array module 203 is connected between described power conversion modules 202 and described storage battery;
Described data acquisition and controlling module 201 is for gathering the electric quantity signal of each storage battery in described batteries, the storage battery selecting electricity in described batteries minimum, as behindhand battery, controls described output switch array module 203 and switches to the state being communicated with described power conversion modules 202 and described behindhand battery;
Described power conversion modules 202, for by adjustment output current, charges to described behindhand battery, makes the voltage of described behindhand battery reach average voltage in described batteries.
Described data acquisition and controlling module 201 comprises single-chip microcomputer U1, pwm chip U2, analog-digital chip U3 and for driving the transformer of relay, described analog-digital chip U3 is connected with described single-chip microcomputer U1, described pwm chip U2 is connected with described analog-digital chip U3, described transformer is connected with described pwm chip U2 with Q2 by the transistor group Q1 for amplified current, described single-chip microcomputer U1 is connected with described batteries, and described transformer is connected with described output switch array module 203 by divider resistance R5 with R9.
Being gathered the electric quantity signal of each storage battery in described batteries by single-chip microcomputer U1, by calculating, analyzing the voltage signal that gathers, thus control described output switch array module 203 and carry out relay gate module, charge compensate is carried out to behindhand battery.
Described single-chip microcomputer U1 is also connected with the indicating circuit for display working condition, described indicating circuit comprises multiple light-emitting diode D1-D4, comprise communication indicator light, run indicator, malfunction indicator lamp and power supply indicator, each described light-emitting diode is in series with pressure limiting resistance respectively, and each described pressure limiting resistance is all connected with power supply.
So just, the different operating state of system can be demonstrated easily.
Described power conversion modules 202 comprises soft start relay K 1, the sustained diode 4 be connected with described soft start relay K 1, described soft start relay K 1 is connected to switch MOS FETQ1-S by capacitance C1 and derided capacitors C9 and drives triode Q1-G and Q2-G, described driving triode Q1-G and Q2-G is connected with high frequency transformer T1, described high frequency transformer T1 connects C2 by filter capacitor and is connected to current sensor F1, described soft start relay K 1 is connected with bus input, and described current sensor F1 is connected with described single-chip microcomputer.
On the basis of foregoing circuit, be also connected with part auxiliary element and line in the present embodiment, for ensureing the normal operation of circuit, the use of these auxiliary elements and line belongs to the circuit application custom of industry universal, does not repeat them here.
Wherein, preferred power conversion modules 202 adopts half-bridge topology, and output adopts full-wave rectification, effectively current signal can be converted to voltage signal, be responsible for acquisition process by data acquisition and controlling module 201.
When data acquisition and controlling module 201 judges that current system is in discharge condition, and when finding there is behindhand battery in described storage battery according to discharge voltage, output switch array module 203 can be switched to the state of power conversion modules 202 described in gating and behindhand battery, Modulating Power conversion module 202 output current thus effectively can adjust the discharge capacity of behindhand battery.
Described output switch array module 203 comprises the switch for selective relay, and described switch one end is connected to storage battery in described batteries, the other end is connected to described soft start relay.Be in different on off operating modes by controlling output switch array module 203, thus corresponding storage battery in batteries can be selected.
In the batteries that the present invention improves effectively, behindhand battery determines the problem of whole cell set capacity, decreases the discharge capacity of behindhand battery, provides batteries emergency service to ensure.
Embodiment 2
As shown in Figure 5 and Figure 6, the invention provides a kind of batteries behindhand battery emergency response assistant system method of work, be applied in the series-connected batteries being connected with load 101 and Switching Power Supply 102, described system comprises: data acquisition and controlling module 201, power conversion modules 202 and output switch array module 203, and described power conversion modules 202 is all connected with described data acquisition and controlling module 201 with described output switch array module 203; Described output switch array module 203 is connected between described power conversion modules 202 and described storage battery; Comprise behindhand battery localization method and capacity householder method;
Described behindhand battery localization method comprises:
S701: the nonego average voltage calculating each battery in described batteries;
S702: the voltage of each storage battery and nonego average voltage are subtracted each other, judges the positive negativity of difference;
S703: the voltage of each storage battery and nonego average voltage are wanted to subtract, judges that itself and battery fall behind and presses the magnitude relationship limit;
The storage battery selecting electricity in described batteries minimum as behindhand battery, and marks behindhand battery.
After flow process starts, first according to formula Uif=(U1+U2+U3+ ... + Un)/n-Ui/n; Carry out nonego mean value computation, if the terminal voltage of storage battery is greater than the equal threshold voltage of nonego in described storage battery, so this battery is normal battery Ui>Uif, if the terminal voltage of described storage battery is less than the equal threshold voltage of nonego, and meets inequality Ui<Uif-U
rthen this storage battery is normal battery.
Described capacity householder method comprises:
S801: judge that whether storage battery total voltage is lower than discharge cut-off voltage;
S802: carry out behindhand battery positioning action;
S803: judged whether behindhand battery;
S804: control switch array module gating behindhand battery;
S805: setting behindhand battery control voltage is the equal threshold voltage of storage battery;
S806: adopt close-loop power control regulating power conversion module output current;
Reached by above step and control the state that described output switch array module 203 switches to the described power conversion modules 202 of connection and described behindhand battery, adjust the output current of described power conversion modules 202, described behindhand battery is charged, makes the voltage of described behindhand battery reach the object of the average voltage in batteries.
After flow process starts, first check the total voltage of storage battery, if total voltage is lower than cut-ff voltage (wherein cut-ff voltage is specified by man of storage battery factory), now storage battery is without capacity, system automatic shutdown.If total voltage is higher than cut-ff voltage, then carry out behindhand battery location, if do not find behindhand battery, then by the storage battery controlling output switch array module 203 and switch to gating minimum voltage, using as subsequent use; If find behindhand battery, by output switch array module 203 gating behindhand battery, control power conversion modules 202 output current, closed-loop control makes behindhand battery voltage reach storage battery average simultaneously.
The method that the embodiment of the present invention provides, its technique effect realizing principle and generation is identical with aforementioned system embodiment, is concise and to the point description, and the not mentioned part of embodiment of the method part can with reference to corresponding contents in aforementioned system embodiment.
In addition, the flow chart in accompanying drawing and block diagram show device according to multiple embodiment of the present invention, the architectural framework in the cards of method and computer program product, function and operation.In this, each square frame in flow chart or block diagram can represent a part for module, program segment or a code, and a part for described module, program segment or code comprises one or more executable instruction for realizing the logic function specified.Also it should be noted that at some as in the realization of replacing, the function marked in square frame also can be different from occurring in sequence of marking in accompanying drawing.Such as, in fact two continuous print square frames can perform substantially concurrently, and they also can perform by contrary order sometimes, and this determines according to involved function.Also it should be noted that, the combination of the square frame in each square frame in block diagram and/or flow chart and block diagram and/or flow chart, can realize by the special hardware based system of the function put rules into practice or action, or can realize with the combination of specialized hardware and computer instruction.
The computer program that the embodiment of the present invention provides, comprise the computer-readable recording medium storing program code, the instruction that described program code comprises can be used for performing the method described in previous methods embodiment, and specific implementation see embodiment of the method, can not repeat them here.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the device of foregoing description and the specific works process of unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that disclosed system and method can realize by another way.System embodiment described above is only schematic, such as, the division of described unit module, be only a kind of logic function to divide, actual can have other dividing mode when realizing, again such as, multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some communication interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.
If described function using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The foregoing is only the preferred embodiments of the present 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 amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to define further it and explain in accompanying drawing subsequently.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (10)
1. an online batteries behindhand battery emergency response assistant system, be applied to the series-connected batteries being connected with load and Switching Power Supply, it is characterized in that, described system comprises: data acquisition and controlling module, power conversion modules and output switch array module, and described power conversion modules is all connected with described data acquisition and controlling module with described output switch array module; Described output switch array module is connected between described power conversion modules and described batteries;
Described data acquisition and controlling module is for gathering the electric quantity signal of each storage battery in described batteries, the storage battery selecting electricity in described batteries minimum, as behindhand battery, controls described output switch array module and switches to the state being communicated with described power conversion modules and described behindhand battery;
Described power conversion modules is used for, by adjustment output current, charging to described behindhand battery, makes the voltage of described behindhand battery reach average voltage in described batteries.
2. one according to claim 1 online batteries behindhand battery emergency response assistant system, it is characterized in that, described data acquisition and controlling module comprises single-chip microcomputer, pwm chip, analog-digital chip and for driving the transformer of relay, described analog-digital chip is connected with described single-chip microcomputer, described pwm chip is connected with described analog-digital chip, described transformer is connected with described pwm chip by the transistor group for amplified current, described single-chip microcomputer is connected with described batteries, described transformer is connected with described output switch array module by divider resistance.
3. one according to claim 2 online batteries behindhand battery emergency response assistant system, it is characterized in that, described single-chip microcomputer is also connected with the indicating circuit for display working condition, described indicating circuit comprises multiple light-emitting diode, each described light-emitting diode is in series with pressure limiting resistance respectively, and each described pressure limiting resistance is all connected with power supply.
4. one according to claim 2 online batteries behindhand battery emergency response assistant system, it is characterized in that, described transistor group comprises a NPN type triode and a PNP type triode, described NPN type triode and described PNP type triode common base and emitter, the base stage of described NPN type triode is all connected with described pwm chip by current-limiting resistance with the base stage of described PNP type triode, and the emitter of described NPN type triode is all connected with described transformer with the emitter of described PNP type triode.
5. one according to claim 2 online batteries behindhand battery emergency response assistant system, it is characterized in that, described power conversion modules comprises soft start relay, the fly-wheel diode be connected with described soft start relay, described soft start relay is connected to switch MOS FET by capacitance and derided capacitors and drives triode, described driving triode is connected with high frequency transformer, described high frequency transformer is connected with current sensor by filter capacitor, described soft start relay is connected with bus input, described current sensor is connected with described single-chip microcomputer.
6. one according to claim 5 online batteries behindhand battery emergency response assistant system, it is characterized in that, described output switch array module comprises the switch for selective relay, and described switch one end is connected to storage battery in described batteries, the other end is connected to described soft start relay.
7. the method for work of a kind of online batteries behindhand battery emergency response assistant system described in claim 1-6 any one, it is characterized in that, described method of work comprises behindhand battery localization method and capacity householder method;
Described behindhand battery localization method comprises:
Gather the electric quantity signal of each storage battery in batteries;
The storage battery selecting electricity in described batteries minimum as behindhand battery, and marks behindhand battery;
Described capacity householder method comprises:
Control described output switch array module and switch to the state being communicated with described power conversion modules and described behindhand battery;
Adjust the output current of described power conversion modules, described behindhand battery is charged, make the voltage of described behindhand battery reach average voltage in batteries.
8. the method for work of a kind of online batteries behindhand battery emergency response assistant system according to claim 7, it is characterized in that, described electric quantity signal comprises voltage, the storage battery that in the described batteries of described selection, electricity is minimum is as behindhand battery, and behindhand battery is marked, comprising:
The voltage reference value of each battery is calculated according to the potentiometer of each storage battery;
Pressure limit is fallen behind according to the rated voltage of storage battery each in described batteries and the quantity of the storage battery battery obtained in batteries;
The terminal voltage of each battery is made comparisons with described voltage reference value respectively, if described terminal voltage is lower than described voltage reference value, then falls behind with described battery and press limit to make comparisons;
If described terminal voltage is less than described voltage reference value and described battery is backward press the difference limit, be then labeled as behindhand battery.
9. the method for work of a kind of online batteries behindhand battery emergency response assistant system according to claim 8, it is characterized in that, the described potentiometer according to each battery calculates the voltage reference value of each battery, comprise: by Uif=(U1+U2+U3+ ... + Un)/n-Ui/n, calculate the nonego average voltage of each battery, using the voltage reference value of described nonego average voltage as each battery, wherein, Uif is nonego average voltage, Ui is the magnitude of voltage of storage battery i in described batteries, and n is the quantity of the storage battery in described batteries;
The quantity battery obtained in batteries of the described rated voltage according to storage battery each in described batteries and storage battery falls behind pressure limit, comprising: by Ur=storage battery rated voltage/n, Ur is fallen behind pressure limit as battery.
10. the method for work of a kind of online batteries behindhand battery emergency response assistant system according to claim 7, it is characterized in that, described capacity householder method comprises:
The total voltage of batteries and the discharge cut-off voltage preset are made comparisons, if batteries total voltage is lower than described discharge cut-off voltage, then start up system shutdown protection;
Control behindhand battery described in output switch array module gating;
Using the target regulated voltage of the equal threshold voltage of batteries as described behindhand battery, described power conversion modules output current is regulated to compensate behindhand battery by closed loop control algorithm.
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| CN105529782A (en) * | 2016-02-02 | 2016-04-27 | 广东技术师范学院 | Online storage battery pack lagging battery emergency auxiliary system and working method thereof |
| CN106941255A (en) * | 2016-11-21 | 2017-07-11 | 国家电网公司 | Based on the distributed maintenance free intelligent d. c power-supply system of cell and its control method |
| CN110474113A (en) * | 2019-07-05 | 2019-11-19 | 深圳市普禄科智能检测设备有限公司 | Electronic cell device |
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| CN204905958U (en) * | 2015-09-10 | 2015-12-23 | 重庆雅讯电源技术有限公司 | Online storage battery falls behind emergent auxiliary system of battery |
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| CN102655346A (en) * | 2012-04-25 | 2012-09-05 | 浙江大学 | Intelligent battery module and battery pack with automatic balance capability |
| CN102684263A (en) * | 2012-05-10 | 2012-09-19 | 上海众联能创新能源科技有限公司 | Series battery equalization circuit based on symmetrical multi-winding transformer structure and control method applied to same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105529782A (en) * | 2016-02-02 | 2016-04-27 | 广东技术师范学院 | Online storage battery pack lagging battery emergency auxiliary system and working method thereof |
| CN106941255A (en) * | 2016-11-21 | 2017-07-11 | 国家电网公司 | Based on the distributed maintenance free intelligent d. c power-supply system of cell and its control method |
| CN110474113A (en) * | 2019-07-05 | 2019-11-19 | 深圳市普禄科智能检测设备有限公司 | Electronic cell device |
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| CN105048605B (en) | 2017-12-19 |
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