CN102055246A - Storage battery accumulation system with buffer device - Google Patents
Storage battery accumulation system with buffer device Download PDFInfo
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- CN102055246A CN102055246A CN 201010236423 CN201010236423A CN102055246A CN 102055246 A CN102055246 A CN 102055246A CN 201010236423 CN201010236423 CN 201010236423 CN 201010236423 A CN201010236423 A CN 201010236423A CN 102055246 A CN102055246 A CN 102055246A
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Abstract
The invention discloses a storage battery accumulation system with a buffer device, which comprises a battery pack, a capacitor bank and a control circuit, wherein the same polar electrodes of the battery pack and the capacitor bank are connected, the other electrode of the battery pack is connected with the other electrode of the capacitor bank through the control circuit, one side of the capacitor bank is an input and output end; and the control circuit comprises a charge control element, a discharge control element and respective trigger circuits, each trigger circuit comprises a transistor as well as a voltage-regulator diode and a resistor which are connected with the base electrode of the transistor, the trigger circuits are bridged between the battery pack and the capacitor bank, and the charge control element and the discharge control element are unilateral conduction elements and in reverse parallel connection, respectively control the charge and the discharge of the battery pack. The storage battery accumulation system has stable input and output voltage, no hop and continuous current in a charge-discharge process by utilizing the characteristics that the end voltage of the capacitor bank does not hop and the capacitor band can be rapidly charged and charged, avoids bearing heavy current impact, and has the advantages of simple structure, long service life and safety.
Description
Technical field
The present invention relates to electric motor car, stand-by power supply and UPS technical field, particularly a kind of batteries energy-storage 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 electric vehicle batteries energy-storage system is the bottleneck of electric motor car development all the time.Because automobile working conditions change in running is bigger, often occur as situations such as starting, acceleration, climbing, brake and descendings, make that battery of electric vehicle group input and output variable power scope is bigger, battery pack life-span and fail safe are affected.In addition, another big field that batteries is used is stand-by power supply and uninterrupted power supply (ups) Unity, batteries 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 batteries.
Batteries is a kind of accumulator of realizing energy storage and conversion by reversible electrochemical reaction.Batteries commonly used comprises lithium ion battery group, Ni-MH battery group, nickel-cadmium cell group, lead-acid battery group etc.The charge and discharge process of batteries is a reversible electrochemical course of reaction.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 pack forms in the extremely short time and disappears, and concentration polarization makes the inner produce power consumption of battery pack, shows as power output and energy and reduces, and input power and energy increase, and reduce the battery pack serviceability.The charge and discharge process of battery pack adopts pulse mode to carry out, and helps reducing the influence of batteries concentration difference, prolongs the useful life of batteries.
In addition, be used for batteries energy-storage systems such as UPS in use, in order to ensure that it is in full power state at any time and out-put supply is paid no attention to the disconnected direct current external power that need connect a burning voltage at the batteries both positive and negative polarity all the time, can make batteries both positive and negative polarity surface produce passivation phenomenon during long-term work, the capacity attenuation of batteries is accelerated, life-span reduces, and for as easy generation security incident such as lithium ion battery group.And for the capacitor group, 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.But because the capacitance of capacitor group is limited, it is few to store electric weight, and the time of keeping its power characteristic is short, does not accommodate system stored energies such as being used for UPS separately and uses.
Therefore, when using batteries work separately in fields such as electric motor car and UPS, often, influence the development of industry because of operational modes such as continuous high power work and floating charge make the life-span of batteries and fail safe reduce.
Summary of the invention
At above-mentioned weak point, order of the present invention provides a kind of batteries energy-storage system with buffer unit.
The batteries energy-storage system of band buffer unit of the present invention, comprise battery pack, capacitor group and control circuit, wherein said battery pack is connected with capacitor group one homopolarity, and another utmost point utmost point of battery pack connects another utmost point of capacitor group by control circuit, and capacitor group one side is an input/output terminal.
Described control circuit comprises charging control element, discharge control element and circuits for triggering separately.
Described circuits for triggering comprise transistor and the voltage stabilizing didoe and the resistance that are connected on its base stage, and circuits for triggering are connected across between battery pack and the capacitor group.
Described charging control element and discharge control element are asymmetrical circuit element, and reverse parallel connection is controlled the charging and the discharge of battery pack respectively.
Described energy-storage system, when being in discharge condition, the capacitor group begins discharge earlier, and the voltage of capacitor group begins to descend, and this moment, battery pack was in isolation, when the voltage of capacitor group drops to when reaching the magnitude of voltage of a setting with the accumulator battery voltage difference, the circuits for triggering of discharge control element start, the conducting of discharge control element, and batteries is connected with load via the discharge control element, to the charging of capacitor group, the voltage of capacitor group raises in the time of to load discharge; When accumulator battery voltage was consistent with capacitor group voltage, circuits for triggering stopped to trigger, and the discharge control element automatically shuts down, and battery pack heavily is in intermittently isolation; When capacitor group terminal voltage descend once more and and battery pack between voltage difference during greater than the voltage limiting value set, the conducting again of discharge control element, batteries enters next discharge cycle.
Described energy-storage system, when being in charged state, the capacitor group begins charging earlier, the voltage of capacitor group begins to raise, this moment, battery pack remained static, when the voltage of capacitor group is elevated to when reaching the magnitude of voltage of a setting with the accumulator battery voltage difference, the trigger circuit triggers of charging control element, the conducting of charging control element, batteries is connected with charging circuit via controllable silicon, and the capacitor group is to battery charging the time, and outer charging circuit charges to the capacitor group simultaneously, accumulator battery voltage raises, and the voltage of capacitor group descends; When accumulator battery voltage was consistent with capacitor group voltage, the charging control element turn-offed, and battery pack is in intermittently inactive state; When capacitor group terminal voltage raise once more and and battery pack between voltage difference during greater than the threshold values set, the conducting again of charging control element, batteries enters next charge cycle.
Described charging control element and discharge control element all adopt controllable silicon or IGBT high-power FET.
Described circuits for triggering are set the 0-30 turn-off delay time of second.
The magnitude of voltage of the setting of the voltage difference of described capacitor group and batteries is the 0-15% of batteries total voltage.
Described battery pack is made up of at least one battery.
Described capacitor group is made up of at least one capacitor and ultracapacitor.
The batteries energy-storage system of band buffer unit of the present invention, realize battery pack pulse current charge, (as electric vehicle brake energy regenerative and UPS wave swimming pulse) is to the impact of battery pack in the time of can avoiding battery energy storage system moment high-power charging.Utilize the not saltus step of terminal voltage of capacitor group and characteristic that can fast charging and discharging, guarantee the batteries energy-storage system in charge and discharge process input and output voltage steadily, not saltus step, electric current is uninterrupted continuously.Avoided batteries to bear the impact of big electric current simultaneously, system configuration is simple, long service life, safety.
Description of drawings
Fig. 1 is the schematic diagram of the batteries energy-storage system of band buffer unit of the present invention;
Fig. 2 is the direct coupling of batteries energy-storage system controllable silicon of band buffer unit of the present invention and the circuit diagram of structure;
Fig. 3 is the direct coupling of batteries energy-storage system IGBT of band buffer unit of the present invention and the circuit diagram of structure.
Embodiment
Knot and embodiment do more detailed explanation to the batteries energy-storage system of band buffer unit of the present invention below.
Fig. 1 is the direct coupling of batteries energy-storage system controllable silicon of band buffer unit of the present invention and the circuit diagram of structure.
Capacitor group 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.
Adopt controllable silicon coupling and (see figure 2) between battery pack and the capacitor group, discharging thyristor T1 is the energy regenerative loop of discharge loop, and charging controllable silicon T2 is the energy regenerative loop of charge circuit.
1, discharge loop: discharging thyristor T1 is a discharge loop among Fig. 2, and wherein connecting with discharging thyristor 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 A1 electric current during greater than the highest pressure limiting, K2 disconnects, and system enters R11 current limliting operating state.Q1 is a driving tube, is used to drive discharging thyristor T1; R2 is a current-limiting resistance, is used to ensure that the control utmost point of discharging thyristor is not breakdown; W1 is that voltage-stabiliser tube and current-limiting resistance R1 constitute pressure limiting control triggering electric circuit (threshold values control 1), when two ends pressure reduction during greater than prescribed threshold, and driving tube Q1 conducting, driven in synchronism discharging thyristor T1 conducting.Under discharging thyristor T1 conducting state, the voltage at discharging thyristor two ends descends and taps into zero volt, and passage current is kept discharging thyristor and kept conducting state; When the terminal voltage of the terminal voltage of battery pack and capacitor group is consistent, discharging thyristor T1 automatic disconnection;
When the voltage of capacitor group descend once more, and when surpassing voltage limiting value, discharging thyristor T1 conducting once more, system enters next discharge cycle.
2, charge circuit: charging controllable silicon T2 is charging Tian Lu among Fig. 2, and connect with charging controllable silicon T2 after the normally-closed contact parallel connection of resistance R 5, R6, R7, R8, R9 and relay K 0 constitutes the major loop that charges.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 charging controllable silicon T2 and drive the loop; Voltage-stabiliser tube W2 and current-limiting resistance R4 constitute pressure limiting and trigger 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 charging controllable silicon T2 conducting simultaneously.Under charging controllable silicon T2 conducting state, the voltage at charging controllable silicon T2 two ends descends and taps into zero volt, and passage current is kept the charging controllable silicon and kept conducting state; When the terminal voltage of the terminal voltage of capacitor group and battery pack is consistent, charging controllable silicon T2 automatic disconnection; When the voltage of capacitor group promote once more, and when surpassing voltage limiting value, charging 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 closed the contact with K1 after at first disconnecting the contact of K0 and KO-1, and system enters the current-limiting charge pattern.
Adopt IGBT coupling and (see figure 3) between battery pack and the capacitor group, discharge IGBT 1 is the energy regenerative loop of discharge loop, and charging IGBT2 is the energy regenerative loop of charge circuit.
Discharge IGBT 1 constitutes discharge loop with current sensor A1, by the pressure reduction of voltage sensor V1, V2 detection battery pack and capacitor group, determines the driving amount of discharge IGBT according to pressure reduction.Utilize the copped wave control technology to realize intermittence, the pulsation performance in discharge energy regenerative loop.Charging 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 uo, 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 (10)
1. the batteries energy-storage system of band buffer unit of the present invention, comprise battery pack, capacitor group and control circuit, it is characterized in that: described battery pack is connected with capacitor group one homopolarity, another utmost point utmost point of battery pack connects another utmost point of capacitor group by control circuit, and capacitor group one side is an input/output terminal.
2. batteries energy-storage system according to claim 1 is characterized in that: described control circuit comprises charging control element, discharge control element and circuits for triggering separately.
3. batteries energy-storage system according to claim 2 is characterized in that: described circuits for triggering comprise transistor and the voltage stabilizing didoe and the resistance that are connected on its base stage, and circuits for triggering are connected across between battery pack and the capacitor group.
4. batteries energy-storage system according to claim 3 is characterized in that: described charging control element and discharge control element are asymmetrical circuit element, and reverse parallel connection is controlled the charging and the discharge of battery pack respectively.
5. batteries energy-storage system according to claim 4, it is characterized in that: described energy-storage system, when being in discharge condition, the capacitor group begins discharge earlier, the voltage of capacitor group begins to descend, this moment, battery pack was in isolation, when the voltage of capacitor group drops to when reaching the magnitude of voltage of a setting with the accumulator battery voltage difference, the circuits for triggering of discharge control element start, the conducting of discharge control element, batteries is connected with load via the discharge control element, and to the charging of capacitor group, the voltage of capacitor group raises in the time of to load discharge; When accumulator battery voltage was consistent with capacitor group voltage, circuits for triggering stopped to trigger, and the discharge control element automatically shuts down, and battery pack heavily is in intermittently isolation; When capacitor group terminal voltage descend once more and and battery pack between voltage difference during greater than the voltage limiting value set, the conducting again of discharge control element, batteries enters next discharge cycle; When being in charged state, the capacitor group begins charging earlier, the voltage of capacitor group begins to raise, this moment, battery pack remained static, when the voltage of capacitor group is elevated to when reaching the magnitude of voltage of a setting with the accumulator battery voltage difference, the trigger circuit triggers of charging control element, the conducting of charging control element, batteries is connected with charging circuit via controllable silicon, the capacitor group is to battery charging the time, to the charging of capacitor group, accumulator battery voltage raises outer charging circuit simultaneously, and the voltage of capacitor group descends; When accumulator battery voltage was consistent with capacitor group voltage, the charging control element turn-offed, and battery pack is in intermittently inactive state; When capacitor group terminal voltage raise once more and and battery pack between voltage difference during greater than the threshold values set, the conducting again of charging control element, batteries enters next charge cycle.
6. batteries energy-storage system according to claim 5 is characterized in that: described charging control element and discharge control element all adopt controllable silicon or IGBT high-power FET.
7. batteries energy-storage system according to claim 6 is characterized in that: described circuits for triggering are set the 0-30 turn-off delay time of second.
8. batteries energy-storage system according to claim 7 is characterized in that: the magnitude of voltage of the setting of the voltage difference of described capacitor group and batteries is the 0-15% of batteries total voltage.
9. batteries energy-storage system according to claim 8 is characterized in that: described battery pack is made up of at least one battery.
10. batteries energy-storage system according to claim 9 is characterized in that: described capacitor group is made up of at least one capacitor and ultracapacitor.
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| CN 201010236423 CN102055246A (en) | 2010-07-22 | 2010-07-22 | Storage battery accumulation system with buffer device |
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| CN 201010236423 CN102055246A (en) | 2010-07-22 | 2010-07-22 | Storage battery accumulation system with buffer device |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102801198A (en) * | 2012-08-31 | 2012-11-28 | 无锡富洪科技有限公司 | Energy storage device |
| CN102832596A (en) * | 2012-08-31 | 2012-12-19 | 深圳市汇川技术股份有限公司 | Low voltage electrombile drive protecting circuit and low voltage electrombile drive protecting method |
| CN104836279A (en) * | 2015-04-23 | 2015-08-12 | 季庆达 | Battery power supply apparatus |
| CN105207371A (en) * | 2014-06-25 | 2015-12-30 | 新普科技股份有限公司 | Charging and discharging system of energy storage element for transportation carrier |
| RU2658624C1 (en) * | 2017-02-13 | 2018-06-22 | Закрытое акционерное общество "Орбита" | Charging-discharging device |
| CN109687562A (en) * | 2018-12-28 | 2019-04-26 | 钱惠富 | A kind of device of mechanical energy to two wheels or three-wheeled electric vehicle charging on-vehicle battery |
| WO2020223914A1 (en) * | 2019-05-08 | 2020-11-12 | Oppo广东移动通信有限公司 | Charging and discharging means and method, and terminal device |
| USD929337S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929335S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929336S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929339S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929338S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929334S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD953268S1 (en) | 2019-09-05 | 2022-05-31 | Techtronic Cordless Gp | Electrical interface |
| USD1012855S1 (en) | 2019-09-05 | 2024-01-30 | Techtronic Cordless Gp | Battery pack |
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| JP2010045938A (en) * | 2008-08-18 | 2010-02-25 | Panasonic Corp | Energy storage device |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801198A (en) * | 2012-08-31 | 2012-11-28 | 无锡富洪科技有限公司 | Energy storage device |
| CN102832596A (en) * | 2012-08-31 | 2012-12-19 | 深圳市汇川技术股份有限公司 | Low voltage electrombile drive protecting circuit and low voltage electrombile drive protecting method |
| CN102832596B (en) * | 2012-08-31 | 2014-10-29 | 深圳市汇川技术股份有限公司 | Low voltage electrombile drive protecting circuit and low voltage electrombile drive protecting method |
| CN102801198B (en) * | 2012-08-31 | 2015-02-25 | 无锡富洪科技有限公司 | Energy storage device |
| CN105207371A (en) * | 2014-06-25 | 2015-12-30 | 新普科技股份有限公司 | Charging and discharging system of energy storage element for transportation carrier |
| CN104836279A (en) * | 2015-04-23 | 2015-08-12 | 季庆达 | Battery power supply apparatus |
| RU2658624C1 (en) * | 2017-02-13 | 2018-06-22 | Закрытое акционерное общество "Орбита" | Charging-discharging device |
| CN109687562A (en) * | 2018-12-28 | 2019-04-26 | 钱惠富 | A kind of device of mechanical energy to two wheels or three-wheeled electric vehicle charging on-vehicle battery |
| WO2020223914A1 (en) * | 2019-05-08 | 2020-11-12 | Oppo广东移动通信有限公司 | Charging and discharging means and method, and terminal device |
| CN113597722A (en) * | 2019-05-08 | 2021-11-02 | Oppo广东移动通信有限公司 | Charging and discharging device and method, and terminal equipment |
| USD929337S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929335S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929336S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929339S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929338S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD929334S1 (en) | 2019-09-05 | 2021-08-31 | Techtronic Cordless Gp | Electrical interface |
| USD953268S1 (en) | 2019-09-05 | 2022-05-31 | Techtronic Cordless Gp | Electrical interface |
| USD1012855S1 (en) | 2019-09-05 | 2024-01-30 | Techtronic Cordless Gp | Battery pack |
| USD1013634S1 (en) | 2019-09-05 | 2024-02-06 | Techtronic Cordless Gp | Battery pack |
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Application publication date: 20110511 |