CN101510698A - Energy-storage system of accumulator - Google Patents
Energy-storage system of accumulator Download PDFInfo
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- CN101510698A CN101510698A CNA2009100806093A CN200910080609A CN101510698A CN 101510698 A CN101510698 A CN 101510698A CN A2009100806093 A CNA2009100806093 A CN A2009100806093A CN 200910080609 A CN200910080609 A CN 200910080609A CN 101510698 A CN101510698 A CN 101510698A
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Abstract
The invention provides a battery energy storage system with a buffer device, which comprises a storage battery, a capacitor and a control component. The battery energy storage system is characterized in that: when the voltage differential value between the storage battery and the capacitor reaches the set voltage limiting value, the control component automatically connects and disconnects a corresponding controllable silicon component, leading the storage battery to enter the pulse current charging or discharging state, avoiding the storage battery bearing high current impact and avoiding jumping situation of input or output voltage simultaneously. The battery energy storage system has the advantages of simple structure, high efficiency, long service life and good security and can be used for power supply systems such as electric vehicles, standby power supply, UPS and the like.
Description
Technical field
The invention belongs to electric motor car, stand-by power supply and UPS technical field, specifically, the present invention relates to a kind of batteries to store energy system with buffer unit.
Background technology
In recent years because energy crisis and problem of environmental pollution make the development of electric motor car and application become focus, and the electric vehicle storage battery is the bottleneck of electric motor car development all the time.Because automobile working conditions change in running is bigger, often occurs as situations such as starting, acceleration, climbing, brake and descendings, makes that battery of electric vehicle group input and output variable power scope is bigger, and battery life and fail safe are affected.In addition, the big field of another of battery applications is stand-by power supply and uninterrupted power supply (ups) Unity, storage battery often is in the floating charge state in this system, and needs its discharge the time will provide bigger power moment, and this all exerts an influence to the life-span and the fail safe of storage battery.
Storage battery is a kind of accumulator of realizing energy storage and conversion by reversible electrochemical reaction.Storage battery commonly used comprises lithium ion battery, Ni-MH battery, nickel-cadmium cell, lead-acid battery etc.The charging and discharging of accumulator process is a reversible right course of reaction of electrochemistry electricity.In this process,, the reactant particle on the electrode forms concentration polarization in the electrode electric double layer owing to spreading.The concentration polarization meeting of battery forms in the extremely short time and disappears, and concentration polarization makes the consumption of inside battery produce power, shows as power output and energy and reduces, and input power and energy increase, and reduce the battery serviceability.The charge and discharge process of battery adopts pulse mode to carry out, and helps reducing the influence of storage battery concentration difference, prolongs the useful life of storage battery.
In addition, be used for battery systems such as UPS in use, in order to ensure that it is in the direct current external power that full power state and out-put supply uninterruptedly need connect a burning voltage all the time at accumulator anode and cathode at any time, can make the accumulator anode and cathode surface produce passivation phenomenon during long-term work, the capacity attenuation of storage battery is accelerated, life-span reduces, and for as easy generation security incident such as lithium ion battery.And for capacitor, because it is the physics energy-storage travelling wave tube, constant voltage of the long-term loading of its positive and negative end can not reduce its performance under its safe voltage, security incident can not take place yet.Because the capacitance of capacitor is limited, it is few to store electric weight, and the time of keeping its power characteristic is short, is not suitable for being used for separately system stored energy application such as UPS.
Therefore, when using battery-operated separately, often, influence the development of industry because of operational modes such as continuous high power work and floating charge make the life-span of storage battery and fail safe reduce in fields such as electric motor car and UPS.
Summary of the invention
The object of the invention is exactly the batteries to store energy system of a kind of novel band buffer unit that provides at above-mentioned weak point.
The technology of the present invention solution is: a kind of batteries to store energy system with buffer unit, comprise storage battery, capacitor and control assembly, the corresponding silicon controlled component of auto switching makes storage battery enter pulse current charge or discharge condition when it is characterized in that control assembly reaches the difference of setting according to storage battery and capacitor electrode pressure difference.
Batteries to store energy system control assembly described in the technical solution of the present invention is made up of the automatic control of cover two-way admittance ghyristor circuit, and its principle is to utilize silicon controlled unilateal conduction characteristic to finish battery impulse discharge or charging process automatically.
In the technical solution of the present invention when energy-storage system externally discharges, capacitor begins discharge earlier, the voltage of capacitor begins to descend, this moment, battery was in isolation, when the voltage of capacitor drops to when reaching the voltage limiting value of a setting with the battery tension difference, utilize voltage stabilizing part and the amplifying device sleeving valve duty control circuit of arranging in pairs or groups to start, one meets the silicon-controlled device conducting that maximum discharge requires on the discharge major loop, storage battery is connected with load via controllable silicon, charge to capacitor in the time of to load discharge, the voltage of capacitor raises.When battery tension was consistent with condenser voltage, controllable silicon automatically shut down, and battery pack is in intermittently isolation.When the capacitor terminal voltage descend once more and and battery pack between voltage difference during greater than the voltage limiting value set, controllable silicon is conducting again, storage battery enters next discharge cycle, sees accompanying drawing 1, and unidirectional conducting control loop 1 and threshold values control 1 constitutes storage battery autompulse discharge loop among the figure.(as electric motor car acceleration, climbing and UPS wave swimming pulse) was to the impact of storage battery when the pulse discharge circuit in the technical solution of the present invention can be avoided the moment high power discharge output of batteries to store energy system.
Capacitor began charging earlier when the batteries to store energy system charged in the technical solution of the present invention, the voltage of capacitor begins to raise, this moment, battery remained static, when the voltage of capacitor is elevated to when reaching the difference of a setting with the battery tension difference, utilize voltage stabilizing part and the amplifying device sleeving valve duty control circuit of arranging in pairs or groups to start, one meets the silicon-controlled device conducting that maximum charge requires on the charging major loop, storage battery is connected with charging circuit via controllable silicon, capacitor is to charge in batteries the time, outer charging circuit charges to capacitor simultaneously, battery tension raises, and the voltage of capacitor descends.When battery tension was consistent with condenser voltage, controllable silicon automatically shut down, and battery pack is in intermittently inactive state.When the capacitor terminal voltage raise once more and and battery pack between voltage difference during greater than the threshold values set, controllable silicon is conducting again, storage battery enters next charge cycle, sees accompanying drawing 1, and unidirectional conducting control loop 2 and threshold values control 2 constitutes storage battery autompulse charge circuit among the figure.The voltage of the overseas charging circuit of its terminal voltage is basic identical when storage battery is full of electricity, controllable silicon not conducting for a long time, and storage battery remains static, and charging is finished automatically.Reduce owing to reasons such as storage battery self discharge make its charging state when the batteries to store energy system places for a long time, terminal voltage also reduces, when being reduced to the threshold values of setting, the automatic conducting of controllable silicon, storage battery is recharged, and storage battery disconnects with external circuit once more when expiring electricity, remains static.(as electric vehicle brake energy regenerative and UPS wave swimming pulse) was to the impact of storage battery when the pulse current charge circuit in the technical solution of the present invention can be avoided batteries to store energy system moment high-power charging.
Control assembly in the technical solution of the present invention in the batteries to store energy system is made up of the silicon controlled component of unidirectional conducting, and the voltage difference excursion of capacitor and storage battery is the 0-15% of storage battery total voltage.
In the technical solution of the present invention in the batteries to store energy system control assembly use the direct-coupled control system of controllable silicon and utilize the copped wave control system of IGBT to realize.
In the technical solution of the present invention in the batteries to store energy system control assembly when battery tension is identical with condenser voltage immediately or postpone to disconnect corresponding silicon controlled component behind the 0-30s, make storage battery enter isolation.
In the technical solution of the present invention in the batteries to store energy system storage battery comprise the batteries that lithium ion battery, Ni-MH battery, nickel-cadmium cell, lead-acid battery or fuel cell are formed.
In the technical solution of the present invention in the batteries to store energy system capacitor comprise that by capacitor by series connection and/or the capacitor group that composes in parallel, capacitor or capacitor group comprise ultracapacitor.
The batteries to store energy system utilizes the not saltus step of terminal voltage of capacitor and characteristic that can fast charging and discharging in the technical solution of the present invention, guarantee the batteries to store energy system in charge and discharge process input and output voltage steadily, not saltus step, electric current is uninterrupted continuously.Avoided storage battery to bear the impact of big electric current simultaneously, system configuration is simple, long service life, safety.
The batteries to store energy system is under special cases in the technical solution of the present invention, during as the use capacity is bigger in the hybrid electric vehicle power-supply system ultracapacitor, because the energy that need shift from capacitor is bigger, change-over time is longer, control assembly can use the copped wave control system, replaces controllable silicon to realize the autompulse charge or discharge function of storage battery finite quantity control in conjunction with the high-power control loop of IGBT.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is the circuit diagram of controllable silicon direct couple junction structure of the present invention.
Fig. 3 is the circuit diagram of copped wave control structure of the present invention.
Embodiment
As shown in Figure 1, capacitor and batteries anodal direct-connected controlled energy Flow between battery pack and the capacitor group by the energy regenerative loop of control negative pole, makes that the charge and discharge loop all has intermittently, the performance of pulsing.As shown in Figure 2, T1 is the energy regenerative loop of discharge loop among Fig. 2, and T2 is the energy regenerative loop of charge circuit among Fig. 2.
1, discharge loop: T1 is a discharge loop in the accompanying drawing 2, and wherein connecting with controllable silicon T1 after current-limiting resistance R11 and the relay K 2 normally-closed contact parallel connections constitutes the energy regenerative major loop of discharge circuit.A1 is a current sensor, is used to detect main circuit current.When the A1 electric current during greater than the highest pressure limiting K2 disconnect, system enters R11 current limliting operating state.Q1 is a driving tube, is used to drive controllable silicon T1; R2 is a current-limiting resistance, is used to ensure that the silicon controlled control utmost point is not breakdown; W1 is that voltage-stabiliser tube and current-limiting resistance R1 constitute pressure limiting control circuit (threshold values control 1), when two ends pressure reduction during greater than prescribed threshold, and driving tube Q1 conducting, driven in synchronism controllable silicon T1 conducting.Under controllable silicon T1 conducting state, the voltage at controllable silicon two ends descends and taps into zero volt, and passage current is kept controllable silicon and kept conducting state; When the terminal voltage of the terminal voltage of battery pack and capacitor group is consistent, controllable silicon T1 automatic disconnection; When the voltage of capacitor group descend once more, and when surpassing voltage limiting value, controllable silicon T1 conducting once more, system enters next discharge cycle.
2, charge circuit: T2 is a charge circuit in the accompanying drawing 2, connects with controllable silicon T2 after the normally-closed contact parallel connection of resistance R 5, R6, R7, R8, R9 and relay K 0 to constitute the charging major loop.A2 is a current sensor, is used for measuring the charging main circuit current.Resistance R 10 is related with relay K 0 auxiliary contact K0-1 (normally closed) to be serially connected in to be connected in series with resistance R 3 with driving tube Q2 and to constitute controllable silicon T2 and drive the loop; Voltage-stabiliser tube W2 and current-limiting resistance R4 constitute pressure limiting control loop (threshold values control 2), when the driving tube Q2 conducting during greater than the voltage limiting value of regulation of the voltage difference at two ends, drive controllable silicon T2 conducting simultaneously.Under controllable silicon T2 conducting state, the voltage at controllable silicon two ends descends and taps into zero volt, and passage current is kept controllable silicon and kept conducting state; When the terminal voltage of the terminal voltage of capacitor group and battery pack is consistent, controllable silicon T2 automatic disconnection; When the voltage of capacitor group promote once more, and when surpassing voltage limiting value, controllable silicon T2 conducting once more, system enters next charge cycle.When the terminal voltage of the terminal voltage of capacitor group and battery pack had big difference, system at first disconnected closed K1 contact behind the contact of K0 and K0-1, and system enters the current-limiting charge pattern.
3, replace controllable silicon with IGBT: as shown in Figure 3, available IGBT replaces the thyristor among Fig. 2, IGBT1 and current sensor A1 constitute discharge loop, determine the pressure reduction of battery pack and capacitor group by voltage sensor V1, V2, determine the driving amount of IGBT according to pressure reduction.Utilize the copped wave control technology to realize intermittence, the pulsation performance in discharge energy regenerative loop.IGBT2 and current sensor A2 constitute charging energy regenerative loop, and the control mode of charge circuit is identical with discharge loop, current opposite in direction, cover mutually.Charging energy regenerative loop conducting threshold value setting should be greater than the regulation of line voltage of battery pack, if it is that U1, rated voltage are that U0, minimum discharge voltage are U2 that the high charge of battery pack is pressed, the maximum charging voltage of the capacitor group of combo can be set the conducting valve threshold voltage that charges back by the highest withstand voltage of load equipment greater than U1 with it.
Claims (7)
1, a kind of batteries to store energy system with buffer unit, comprise storage battery, capacitor and control assembly, when it is characterized in that described control assembly reaches the voltage limiting value of setting according to described storage battery and described capacitor electrode pressure difference, the silicon controlled component of auto switching correspondence makes described storage battery enter pulse current charge or discharge condition.
2, batteries to store energy system according to the band buffer unit of claim 1, wherein when described energy-storage system externally discharges, described capacitor begins discharge earlier, described storage battery is in isolation, the voltage of described capacitor begins to descend, when the voltage of described capacitor drops to when reaching the voltage limiting value of setting with described battery tension difference, start the threshold values control circuit of voltage stabilizing part and amplifying device collocation, corresponding silicon controlled component conducting, described storage battery is connected with load via described silicon controlled component, give described capacitor charging in the time of to load discharge, the voltage of described capacitor raises; When described battery tension was consistent with described condenser voltage, described controllable silicon automatically shut down, and described storage battery is in intermittently isolation; When described capacitor terminal voltage descend once more and and described storage battery between voltage difference when reaching the voltage limiting value of setting, the conducting again of described silicon controlled component, described storage battery enters next discharge cycle; And
When the charging of described batteries to store energy system, described capacitor begins charging earlier, the voltage of described capacitor begins to raise, this moment, described storage battery remained static, when the voltage of described capacitor is elevated to when reaching the difference of setting with described battery tension difference, start the threshold values control circuit of voltage stabilizing part and amplifying device collocation, corresponding silicon controlled component conducting, described storage battery is connected with charging circuit via described silicon controlled component, described capacitor is to described charge in batteries the time, to described capacitor charging, described battery tension raises outer charging circuit simultaneously, and the voltage of described capacitor descends; When described battery tension was consistent with described condenser voltage, described controllable silicon automatically shut down, and described storage battery is in intermittently inactive state; When described capacitor terminal voltage raise once more and and described and described storage battery between voltage difference when reaching the voltage limiting value of setting, the conducting again of described silicon controlled component, described storage battery enters next charge cycle; The voltage of the overseas charging circuit of its terminal voltage is basic identical when storage battery is full of electricity, silicon controlled component not conducting for a long time, and storage battery remains static, and charging is finished automatically; System places for a long time when batteries to store energy, when described accumulator voltage is reduced to the threshold values of setting, and the corresponding automatic conducting of silicon controlled component, described storage battery is recharged, and described storage battery disconnects with external circuit once more when expiring electricity, remains static.
3, batteries to store energy according to claim 2 system is characterized in that described control assembly is made up of the silicon controlled component of unidirectional conducting, and the voltage difference excursion of described capacitor and described storage battery is the 0-15% of storage battery total voltage.
4, batteries to store energy according to claim 2 system is characterized in that described control assembly uses the direct-coupled control system of controllable silicon and utilizes the copped wave control system of IGBT to realize.
5, batteries to store energy according to claim 2 system, it is characterized in that described control assembly disconnects corresponding silicon controlled component immediately or behind the delay 0-30s when described battery tension is identical with described condenser voltage, make described storage battery enter isolation.
6, batteries to store energy according to claim 2 system is characterized in that described storage battery comprises the batteries that lithium ion battery, Ni-MH battery, nickel-cadmium cell, lead-acid battery or fuel cell are formed.
7, batteries to store energy according to claim 2 system is characterized in that described capacitor comprises that by capacitor by series connection and/or the capacitor group that composes in parallel, capacitor or capacitor group comprise ultracapacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100806093A CN101510698A (en) | 2009-03-20 | 2009-03-20 | Energy-storage system of accumulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100806093A CN101510698A (en) | 2009-03-20 | 2009-03-20 | Energy-storage system of accumulator |
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| CN101510698A true CN101510698A (en) | 2009-08-19 |
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| CNA2009100806093A Withdrawn CN101510698A (en) | 2009-03-20 | 2009-03-20 | Energy-storage system of accumulator |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882813A (en) * | 2010-06-02 | 2010-11-10 | 中国科学院电工研究所 | Mixed energy storage system |
| CN102055246A (en) * | 2010-07-22 | 2011-05-11 | 中信国安盟固利动力科技有限公司 | Storage battery accumulation system with buffer device |
| CN102386671A (en) * | 2010-06-14 | 2012-03-21 | 施耐德电器工业公司 | Device and method for supplying a mobile communication system and a sensor arrangement including such a device |
| CN102683761A (en) * | 2011-01-31 | 2012-09-19 | 手持产品公司 | Method and mobile device for extending battery life |
| CN102801198A (en) * | 2012-08-31 | 2012-11-28 | 无锡富洪科技有限公司 | Energy storage device |
| CN102859826A (en) * | 2010-02-23 | 2013-01-02 | Abb研究有限公司 | An electric plant with capacity to charge electric batteries |
| CN103563202A (en) * | 2011-04-05 | 2014-02-05 | Abb研究有限公司 | Modular multilevel converter with cell-connected battery storages |
| CN104410118A (en) * | 2014-11-21 | 2015-03-11 | 重庆洋迪机电有限公司 | Quick charging and storage circuit |
| CN105048538A (en) * | 2015-07-07 | 2015-11-11 | 国网上海市电力公司 | Storage battery system of distribution automatic terminal and testing method thereof |
| CN106099231A (en) * | 2016-08-11 | 2016-11-09 | 盐城师范学院 | A kind of pulsed discharge method promoting cell discharge performance |
| CN108430709A (en) * | 2015-12-22 | 2018-08-21 | 罗伯特·博世有限公司 | Hand held power machine |
| CN115208033A (en) * | 2022-09-14 | 2022-10-18 | 江苏楚能工程技术有限公司 | Intelligent integrated power supply system |
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2009
- 2009-03-20 CN CNA2009100806093A patent/CN101510698A/en not_active Withdrawn
Cited By (20)
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| CN102859826B (en) * | 2010-02-23 | 2015-09-09 | Abb研究有限公司 | A kind of power station of having the ability to charge the battery |
| CN102859826A (en) * | 2010-02-23 | 2013-01-02 | Abb研究有限公司 | An electric plant with capacity to charge electric batteries |
| CN101882813B (en) * | 2010-06-02 | 2013-05-08 | 中国科学院电工研究所 | Mixed energy storage system |
| CN101882813A (en) * | 2010-06-02 | 2010-11-10 | 中国科学院电工研究所 | Mixed energy storage system |
| CN102386671A (en) * | 2010-06-14 | 2012-03-21 | 施耐德电器工业公司 | Device and method for supplying a mobile communication system and a sensor arrangement including such a device |
| CN102386671B (en) * | 2010-06-14 | 2017-06-16 | 施耐德电器工业公司 | For the power-supply device and method and sensor cluster of wireless communication system |
| CN102055246A (en) * | 2010-07-22 | 2011-05-11 | 中信国安盟固利动力科技有限公司 | Storage battery accumulation system with buffer device |
| CN102683761B (en) * | 2011-01-31 | 2016-12-14 | 手持产品公司 | The method of prolonging service life of battery and mobile device |
| CN102683761A (en) * | 2011-01-31 | 2012-09-19 | 手持产品公司 | Method and mobile device for extending battery life |
| CN103563202A (en) * | 2011-04-05 | 2014-02-05 | Abb研究有限公司 | Modular multilevel converter with cell-connected battery storages |
| CN103563202B (en) * | 2011-04-05 | 2016-09-14 | Abb研究有限公司 | There is the modular multistage transducer of the cell reservoir of unit-connection |
| CN102801198A (en) * | 2012-08-31 | 2012-11-28 | 无锡富洪科技有限公司 | Energy storage device |
| CN102801198B (en) * | 2012-08-31 | 2015-02-25 | 无锡富洪科技有限公司 | Energy storage device |
| CN104410118B (en) * | 2014-11-21 | 2023-03-24 | 重庆洋迪机电有限公司 | Quick charging and storing circuit |
| CN104410118A (en) * | 2014-11-21 | 2015-03-11 | 重庆洋迪机电有限公司 | Quick charging and storage circuit |
| CN105048538A (en) * | 2015-07-07 | 2015-11-11 | 国网上海市电力公司 | Storage battery system of distribution automatic terminal and testing method thereof |
| CN108430709A (en) * | 2015-12-22 | 2018-08-21 | 罗伯特·博世有限公司 | Hand held power machine |
| CN106099231B (en) * | 2016-08-11 | 2019-05-21 | 盐城师范学院 | A kind of pulsed discharge method promoting cell discharge performance |
| CN106099231A (en) * | 2016-08-11 | 2016-11-09 | 盐城师范学院 | A kind of pulsed discharge method promoting cell discharge performance |
| CN115208033A (en) * | 2022-09-14 | 2022-10-18 | 江苏楚能工程技术有限公司 | Intelligent integrated power supply system |
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Application publication date: 20090819 |