CN102983614A - Two-way converter station charge-discharge system - Google Patents
Two-way converter station charge-discharge system Download PDFInfo
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- CN102983614A CN102983614A CN2012105052747A CN201210505274A CN102983614A CN 102983614 A CN102983614 A CN 102983614A CN 2012105052747 A CN2012105052747 A CN 2012105052747A CN 201210505274 A CN201210505274 A CN 201210505274A CN 102983614 A CN102983614 A CN 102983614A
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Abstract
The invention discloses a two-way converter station charge-discharge system used for charging and discharging of an electric vehicle. The system comprises K AC/DC rectifier modules or module groups used for charging K battery boxes correspondingly, and further comprises one inverter module or inverter module group, wherein K is larger than 1; a DC input port of the inverter module or inverter module group is connected with the positive electrodes and the negative electrodes of the battery boxes corresponding to a group of switches through the group of switches; each battery box is provided with a corresponding batter management system; a main control communication unit is respectively connected with all the AC/DC rectifier modules or module groups and all the battery management systems; during charging, all the switches are off, and when a certain battery box discharges, a corresponding switch is on; and charging and discharging can be controlled through the switches, so that investment is saved and charge-discharge speed and utilization rate of the whole system are improved.
Description
Technical field
The present invention is a kind of electrical changing station that discharges and recharges for electric motor car, the specifically charge-discharge system of electrical changing station.
Background technology
The electric motor car industry is risen at present, the electric motor car charger that thereupon is equipped with also and then grows up, because charging or change electricity, electric motor car all needs to use storage battery (or super capacitor), storage battery (or super capacitor) is again a kind of fine energy storage device, and the power consumption of electrical network is different along with the difference of production time, daytime, power consumption was large, the electrical network overload operation, and night, power consumption was few, caused generating and transmission facilities idle, be the harmful effect of avoiding this phenomenon that electrical network is caused, many local power network companies have carried out the different electricity prices of peak valley.Along with popularizing of electric motor car, utilize the battery of a large amount of electric motor cars or its their the replacing charging energy storage that charges at night, feed back to electrical network daytime and carry out electric quantity balancing, utilize this peak valley price difference, provide cost savings for the electric motor car user, simultaneously balance the electrical network power consumption, reduce the rigidity investment.Therefore, carry out the reverse electrical network that feeds back to for simultaneously the battery of electric vehicle energy storage to the electric motor car charging, must become a kind of trend.
The charge-discharge machine that present this two-way electrical changing station is used mainly contains two kinds of tactic patterns, a kind of tactic pattern is to adopt biphase rectification inverter bridge topology in the inner AC/DC topological structure of charger, its topology diagram as shown in Figure 1, the three-phase alternating current input is through input filter/inversion output smoothing device, again through output inverter bridge/input rectifying bridge, exported by pfc circuit, the shortcoming of sort circuit is the circuit topology very complex, input filter doubles as inversion output smoothing device simultaneously, because inversion is output as low frequency, volume is larger.Because AC becomes the power of DC and the power that DC becomes AC is suitable, and the power device waste is larger, cost is higher in addition.Another kind of tactic pattern as shown in Figure 2, the three-phase alternating current input by DC port/DC charging post output, is exported by the inversion port behind the DC/AC inversion module after AC/DC charging rectifier module simultaneously.The characteristics of this structure are in every group of charger AC/DC charging rectifier module or module group, between battery port and ac input end mouth, incorporate again simultaneously a DC/AC inversion module into, shortcoming is that the ac converter module is fixed, system availability is low, inversion module does not have Redundancy Design simultaneously, poor reliability, every group all will be disposed inversion module, and investment is high.
Summary of the invention
The objective of the invention is that existing two-way charging system circuit is complicated in order to solve, inverter power is fixing immutable, problems such as reliability is low and propose a kind of new two-way electrical changing station charge-discharge system adopt multimode blocking DC charging system, modularization inversion system and automatic switchover control module.
The technical solution used in the present invention is: have corresponding K the AC/DC rectification module that charges to K battery case or module group, and 1 inversion module or inversion module group, K is greater than 1; The direct-flow input end mouth of inversion module or inversion module group links to each other with the both positive and negative polarity of one group of corresponding each battery case of switch by one group of switch; Each battery case is furnished with corresponding battery management system, and the master control communication unit connects respectively each AC/DC rectification module or module group and each battery management system; All switches all are in off-state during charging, during certain battery case discharge, and a switch closure of its respective sets.
Described switch is manual type, various electronic type or other electron-like formula.
Each battery case positive pole connects switch, negative pole is in parallel.
A plurality of inversion modules or inversion module group can be arranged, be connected with diverter switch between the direct-flow input end of each inversion module or inversion module group and each battery case.
The present invention can discharge and recharge control by switch, switches at each battery case and intermodule as required, reduces investment outlay, and has improved entire system and has discharged and recharged speed, also improves the utilance of system.
Description of drawings
The structure chart of the charge-discharge machine that the existing two kinds of two-way electrical changing stations of Fig. 1 and Fig. 2 are used;
Fig. 3 is the structure chart of a kind of two-way electrical changing station charge-discharge system of the present invention;
Fig. 4 is the structure chart when the battery case group among the present invention adopts positive pole to add switch, negative pole parallel connection;
Fig. 5 is the structure chart when the present invention adopts a plurality of inversion module.
Embodiment
As shown in Figure 3, there are K AC/DC rectification module or module group in system of the present invention, K is greater than 1, plural AC/DC rectification module or module group are namely arranged, corresponding to K battery case charging, each battery case is furnished with corresponding battery management system BMS, and the master control communication unit connects respectively each AC/DC rectification module or module group and each battery management system BMS.Control on Communication by master control communication unit and modules group is controlled whole charging process.Be furnished with simultaneously 1 inversion module or inversion module group, when with the inversion module group, just can realize Redundancy Design, improve the reliability of inversion group, the direct-flow input end mouth of inversion module or inversion module group links to each other with the both positive and negative polarity of one group of corresponding each battery case of switch by one group of switch, used switch can be manual, open such as sky, plug-in strip etc., it also can be automatic various electronic switch, such as MOSFET, triode, thyristor, IGBT, relay, contactor or other electron-like switch, can discharge to each battery case with switch mode; Used electronic switch can be unidirectional, also can be two-way, and shown in Figure 3 is with the electronic switch by main control unit control Push And Release process, charges normal in the process, and all switches all are in off-state; When certain battery case need to discharge; one switch closure of respective sets; battery in the battery case is connected with the inversion module group by switch; battery discharges under the control of main control unit; and certain discharge prevention is arranged (such as overcurrent; low pressure etc.); need discharge if any a plurality of battery cases; then can whether identical according to battery case voltage; also can be with the amount discharge such as identical; as long as the power of inversion module group can satisfy, can not satisfy such as the power of inversion module group, main control unit is according to the backstage or automatically sort to each battery case and discharge.Like this, dispose inversion module separately just need not for each battery case, improve the utilance of system, save investment.
When the discharge demand is more, also the inversion module group can be increased, adopt many groups comprehensively to switch, improve the entire system velocity of discharge.
Because the charging rectifier module is modular, inversion also is modular, the system module number also can not be used at the very start and assort, may according to the traffic carrying capacity of electrical changing station, increase flexibly, when traffic carrying capacity increases, again progressively boost charge module and accordingly inversion module, reach the purpose of reducing investment outlay, simultaneously, need not carry out repeated construction.
One group of switch in the system shown in Figure 3 can add switch with one pole, and another utmost point paralleling model switches.Be exactly that battery case adopts positive pole to increase and closes and carries out switching controls, the switchable electrical changing station of a kind of inversion system of negative pole parallel connection as shown in Figure 4.
Fig. 5 is the structure that inversion module is comprised of multimode, be connected with diverter switch between the direct-flow input end of each inversion module and each battery case, can between each battery case and inversion input, switch as required, switching controls can be switched according to client's needs with the master control communication unit, also can switch according to the discharge needs of each battery case, when an inversion module is not enough to support that certain battery case discharge needs, can switch again into another idle module, until meet the demands.As discharge into to a certain degree, when needed inversion module is too much, inversion module can be switched disconnection again.The switching of inversion module can be carried out according to the BMS communicating requirement, also can require to switch according to the input of different channels (such as the backstage etc.).
Claims (4)
1. two-way electrical changing station charge-discharge system is characterized in that: have corresponding K the AC/DC rectification module that charges to K battery case or module group, and 1 inversion module or inversion module group, K is greater than 1; The direct-flow input end mouth of inversion module or inversion module group links to each other with the both positive and negative polarity of one group of corresponding each battery case of switch by one group of switch; Each battery case is furnished with corresponding battery management system, and the master control communication unit connects respectively each AC/DC rectification module or module group and each battery management system; All switches all are in off-state during charging, during certain battery case discharge, and a switch closure of its respective sets.
2. a kind of two-way electrical changing station charge-discharge system according to claim 1, it is characterized in that: described switch is manual type, various electronic type or other electron-like formula.
3. a kind of two-way electrical changing station charge-discharge system according to claim 1 is characterized in that: each battery case positive pole connects switch, negative pole is in parallel.
4. a kind of two-way electrical changing station charge-discharge system according to claim 1 is characterized in that: a plurality of inversion modules or inversion module group can be arranged, be connected with diverter switch between the direct-flow input end of each inversion module or inversion module group and each battery case.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105052747A CN102983614A (en) | 2012-12-03 | 2012-12-03 | Two-way converter station charge-discharge system |
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| CN2012105052747A CN102983614A (en) | 2012-12-03 | 2012-12-03 | Two-way converter station charge-discharge system |
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| CN102983614A true CN102983614A (en) | 2013-03-20 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532206A (en) * | 2013-10-31 | 2014-01-22 | 国家电网公司 | Charging post |
| CN104716698A (en) * | 2013-12-16 | 2015-06-17 | 高达能源科技股份有限公司 | Charger for rechargeable batteries and charging method thereof |
| CN106972564A (en) * | 2017-04-01 | 2017-07-21 | 三峡大学 | A kind of bi-directional electric power feed system for public transport electrical changing station |
| WO2018040994A1 (en) * | 2016-08-29 | 2018-03-08 | 上海蔚来汽车有限公司 | Modularised charging vehicle |
| CN107834619A (en) * | 2017-09-28 | 2018-03-23 | 惠州市蓝微新源技术有限公司 | A kind of battery pack system with emergent charging/discharging function |
| CN108808751A (en) * | 2017-04-27 | 2018-11-13 | 奥动新能源汽车科技有限公司 | A kind of electrical changing station power supply system and electrical changing station method of supplying power to |
| CN112510735A (en) * | 2020-09-24 | 2021-03-16 | 葛炽昌 | Power dispatching system and power dispatching method |
| CN113500941A (en) * | 2021-08-19 | 2021-10-15 | 盾石磁能科技有限责任公司 | Charging device and charging pile |
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| CN203151189U (en) * | 2012-12-03 | 2013-08-21 | 江苏嘉钰新能源技术有限公司 | Two-way converter station charge-discharge system |
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| JP2007134130A (en) * | 2005-11-09 | 2007-05-31 | Tsubakimoto Chain Co | Battery charge and discharge management system of automatic guided vehicle |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532206A (en) * | 2013-10-31 | 2014-01-22 | 国家电网公司 | Charging post |
| CN103532206B (en) * | 2013-10-31 | 2016-01-20 | 国家电网公司 | A kind of charging pile |
| CN104716698A (en) * | 2013-12-16 | 2015-06-17 | 高达能源科技股份有限公司 | Charger for rechargeable batteries and charging method thereof |
| WO2018040994A1 (en) * | 2016-08-29 | 2018-03-08 | 上海蔚来汽车有限公司 | Modularised charging vehicle |
| US11001153B2 (en) | 2016-08-29 | 2021-05-11 | Nio Co., Ltd. | Modularised charging vehicle |
| CN106972564A (en) * | 2017-04-01 | 2017-07-21 | 三峡大学 | A kind of bi-directional electric power feed system for public transport electrical changing station |
| CN108808751A (en) * | 2017-04-27 | 2018-11-13 | 奥动新能源汽车科技有限公司 | A kind of electrical changing station power supply system and electrical changing station method of supplying power to |
| CN108808751B (en) * | 2017-04-27 | 2021-06-01 | 奥动新能源汽车科技有限公司 | Power supply system and method for battery replacement station |
| CN107834619A (en) * | 2017-09-28 | 2018-03-23 | 惠州市蓝微新源技术有限公司 | A kind of battery pack system with emergent charging/discharging function |
| CN112510735A (en) * | 2020-09-24 | 2021-03-16 | 葛炽昌 | Power dispatching system and power dispatching method |
| CN113500941A (en) * | 2021-08-19 | 2021-10-15 | 盾石磁能科技有限责任公司 | Charging device and charging pile |
| CN113500941B (en) * | 2021-08-19 | 2022-11-15 | 盾石磁能科技有限责任公司 | Charging device and charging pile |
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Application publication date: 20130320 |