CN203151189U - Two-way converter station charge-discharge system - Google Patents
Two-way converter station charge-discharge system Download PDFInfo
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- CN203151189U CN203151189U CN2012206512584U CN201220651258U CN203151189U CN 203151189 U CN203151189 U CN 203151189U CN 2012206512584 U CN2012206512584 U CN 2012206512584U CN 201220651258 U CN201220651258 U CN 201220651258U CN 203151189 U CN203151189 U CN 203151189U
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Abstract
The utility model 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 utility model is a kind of electrical changing station that discharges and recharges for electric motor car, specifically is the charge-discharge system of electrical changing station.
Background technology
The electric motor car industry is risen at present, the electric motor car charger of Pei Beiing also and then grows up thereupon, 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 big, 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 that circuit topology is quite complicated, input filter is double as inversion output smoothing device simultaneously, because inversion is output as low frequency, volume is bigger.Because AC becomes the power of DC and the power that DC becomes AC is suitable, and the power device waste is bigger, 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 simultaneously a DC/AC inversion module again 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 purpose of this utility model is to propose a kind of new two-way electrical changing station charge-discharge system for problem such as solve existing two-way charging system circuit complexity, inverter power is fixing immutable, and reliability is low.
The technical solution adopted in the utility model is: have corresponding K AC/DC rectification module giving that K battery case charge 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 each AC/DC rectification module or module group and each battery management system respectively; 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 parallel connection.
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 utility model adopts multimode blocking DC charging system, modularization inversion system and automatic switchover control module, can discharge and recharge control by switch, switch at each battery case and intermodule as required, reduce investment outlay, improve entire system and discharged and recharged speed, also improved 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 utility model;
Fig. 4 is the structure chart when the battery case group in the utility model adopts positive pole to add switch, negative pole parallel connection;
Fig. 5 is the structure chart when the utility model adopts a plurality of inversion module.
Embodiment
As shown in Figure 3, the utility model has K AC/DC rectification module or module group, 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 each AC/DC rectification module or module group and each battery management system BMS respectively.Control on Communication by master control communication unit and each module group is controlled whole charging process.Be furnished with 1 inversion module or inversion module group simultaneously, 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 as sky, plug-in strip etc., it also can be automatic various electronic switch, 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 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 (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 as identical; as long as the power of inversion module group can satisfy, can not satisfy as the power of inversion module group, main control unit is according to the backstage or sort to each battery case automatically 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 more for a long time, 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 increase flexibly, when traffic carrying capacity increases according to the traffic carrying capacity of electrical changing station, progressively boost charge module and inversion module more accordingly, reach the purpose of reducing investment outlay, simultaneously, need not carry out repeated construction.
Shown in Figure 3 is that one group of switch in the system can add switch with one pole, and another utmost point paralleling model switches.Be 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 made up 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, till meeting 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 (as the backstage etc.).
Claims (3)
1. two-way electrical changing station charge-discharge system is characterized in that: have corresponding K AC/DC rectification module giving that K battery case charge 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 each AC/DC rectification module or module group and each battery management system respectively; 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: each battery case positive pole connects switch, negative pole parallel connection.
3. 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206512584U CN203151189U (en) | 2012-12-03 | 2012-12-03 | Two-way converter station charge-discharge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206512584U CN203151189U (en) | 2012-12-03 | 2012-12-03 | Two-way converter station charge-discharge system |
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| Publication Number | Publication Date |
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| CN203151189U true CN203151189U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012206512584U Expired - Fee Related CN203151189U (en) | 2012-12-03 | 2012-12-03 | Two-way converter station charge-discharge system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983614A (en) * | 2012-12-03 | 2013-03-20 | 江苏嘉钰新能源技术有限公司 | Two-way converter station charge-discharge system |
| CN107310409A (en) * | 2017-05-10 | 2017-11-03 | 浙江大学 | A kind of switching of bidirectional electric automobile charger and control method |
| CN110071554A (en) * | 2019-06-01 | 2019-07-30 | 深圳市永航新能源技术有限公司 | A kind of parallel extended structure of battery BMS |
-
2012
- 2012-12-03 CN CN2012206512584U patent/CN203151189U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983614A (en) * | 2012-12-03 | 2013-03-20 | 江苏嘉钰新能源技术有限公司 | Two-way converter station charge-discharge system |
| CN107310409A (en) * | 2017-05-10 | 2017-11-03 | 浙江大学 | A kind of switching of bidirectional electric automobile charger and control method |
| CN107310409B (en) * | 2017-05-10 | 2020-02-18 | 浙江大学 | Switching and control method of electric automobile bidirectional charger |
| CN110071554A (en) * | 2019-06-01 | 2019-07-30 | 深圳市永航新能源技术有限公司 | A kind of parallel extended structure of battery BMS |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20161203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |