CN204886205U - Energy storage two way convertor - Google Patents
Energy storage two way convertor Download PDFInfo
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- CN204886205U CN204886205U CN201520673659.3U CN201520673659U CN204886205U CN 204886205 U CN204886205 U CN 204886205U CN 201520673659 U CN201520673659 U CN 201520673659U CN 204886205 U CN204886205 U CN 204886205U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The utility model discloses an energy storage two way convertor, include: isolation transformer, three -phase ACDC module, parallelly connected a plurality of DCDC modules and microcontroller, isolation transformer is connected with AC electric network and three -phase ACDC module, three -phase ACDC module is connected with the DCDC module, every DCDC module is connected with the group battery one -to -one among the battery energy storage system, microcontroller and battery management system among three -phase ACDC module, DCDC module, energy management system and the battery energy storage system are connected for according to energy management system's the information control three -phase ACDC module and the operating condition of DCDC module. This energy storage two way convertor is connected with different group batteries through a plurality of parallelly connected DCDC modules, can independent control batteries the running state of group, can realize the management of dividing into groups of the battery among the battery energy storage system, the flexibility that has improved battery energy storage system.
Description
Technical field
The utility model relates to energy storage and power interchange technique field, particularly relates to a kind of energy storage two way convertor.
Background technology
Greatly develop the background of generation of electricity by new energy technology and micro-capacitance sensor technology at current national under, battery energy storage technology is paid close attention to widely.
In field of new energy generation, battery energy storage technology can stabilize the power fluctuation of wind power generation and photovoltaic generation, and its power stage is tended towards stability, and improves the quality of power supply and the stability of new-energy grid-connected; In micro-capacitance sensor field, battery energy storage technology can improve the quality of power supply of microgrid, improves the stability of system, and can play the effect of emergency power supply in case of a fault; Battery energy storage system also can play the effect of peak load shifting in electrical network.PCS (energy storage two way convertor) is the chief component of energy-storage system, can be realized the transmitted in both directions of the energy of energy in battery energy storage system and electrical network by PCS.Traditional PCS is single-stage two-way PWM converter, and this current transformer cannot carry out grouping management to the battery in battery energy storage system, cannot realize the operation of batteries under platform machine simultaneously, safeguard parallel, therefore be difficult to the requirement meeting battery energy storage system flexibility.
As can be seen here, how realizing carrying out grouping management to the battery in battery energy storage system is those skilled in the art's problem demanding prompt solutions.
Utility model content
The purpose of this utility model is to provide a kind of energy storage two way convertor, carries out grouping management for realizing to the battery in battery energy storage system.In addition, the purpose of this utility model also provides a kind of control method of this energy storage two way convertor.
For solving the problems of the technologies described above, the utility model provides a kind of energy storage two way convertor, comprising: isolating transformer, three-phase AC/DC module, multiple DC/DC module in parallel and microcontroller;
Described isolating transformer and AC network and described three-phase AC/DC model calling;
Described three-phase AC/DC module and described DC/DC model calling;
Battery pack in each described DC/DC module and battery energy storage system connects one to one;
Described microcontroller is connected with the battery management system in described three-phase AC/DC module, described DC/DC module, EMS and described battery energy storage system, for controlling the operating state of described three-phase AC/DC module and described DC/DC module according to the information of described EMS;
Wherein, described battery management system is connected with described battery pack, and described battery management system is connected with described EMS.
Preferably, described microcontroller is by communication bus and described three-phase AC/DC model calling.
Preferably, described microcontroller is by communication bus and described DC/DC model calling.
Preferably, described microcontroller is connected with described battery management system by communication bus.
Preferably, described microcontroller is connected with described EMS by communication bus.
Energy storage two way convertor provided by the utility model, comprising: isolating transformer, three-phase AC/DC module, multiple DC/DC module in parallel and microcontroller.Connected from different battery pack by the DC/DC module of multiple parallel connection, independently can control the running status of battery pack, can realize, to the battery group management in battery energy storage system, improve the flexibility of battery energy storage system.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment, simple introduction is done below by the accompanying drawing used required in embodiment, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structure chart of a kind of energy storage two way convertor that Fig. 1 provides for the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making under creative work prerequisite, and the every other embodiment obtained, all belongs to the utility model protection range.
Core of the present utility model is to provide a kind of energy storage two way convertor.
In order to make those skilled in the art person understand the utility model scheme better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The structure chart of a kind of energy storage two way convertor that Fig. 1 provides for the utility model.Energy storage two way convertor, comprising: isolating transformer 10, three-phase AC/DC module 11, multiple DC/DC module 12 in parallel and microcontroller 16.
Isolating transformer 10 is connected with AC network, and its effect is changed by the voltage of AC network, and transfer to three-phase AC/DC module 11.One end of three-phase AC/DC module 11 is connected with isolating transformer 10, and the other end is connected with multiple DC/DC module 12, and wherein, multiple DC/DC module 12 parallel relationship is independently each other.Each DC/DC module 12 is all connected with the battery pack of in battery energy storage system 13.In battery energy storage system, battery management system 14 is connected with each battery pack 13, for obtaining the information of each battery pack 13, as: the information of voltage of battery pack 13 current state information, battery pack 13, current information, temperature information, state-of-charge information and health status information etc.; EMS 15 is connected with battery management system 14, for obtaining the information of battery management system 14; Also being connected with microcontroller 16, for obtaining the information of three-phase AC/DC module 11 and DC/DC module 12, and sending information according to after the information comprehensive analysis obtained to microcontroller 16.
Wherein, the said health status information of the utility model refers to: the information such as battery capacity, health degree, performance state.
Microcontroller 16 is connected with three-phase AC/DC module 11, DC/DC module 12, battery management system 14 and EMS 15, for controlling the operating state of three-phase AC/DC module 11 and DC/DC module 12 according to the information of EMS 15.
Concrete control procedure mainly comprises the following aspects:
The first, control three-phase AC/DC module 11 and DC/DC module 12 are in the state keeping battery pack 13 equalizing charge and battery pack 13 balanced discharge.
Wherein, the process of equalizing charge is as follows: microcontroller 16 judges group number and the group name that can allow rechargeable battery set according to the state-of-charge information of the input power of the energy accumulation current converter preset and battery pack 13, then according to the charging coefficient of each battery pack 13 of the state-of-charge information matches of battery pack 13, make battery pack 13 can equalizing charge.In charging process, microcontroller 16 is the power of dynamic tracing energy-storage current transformer and the information of each battery pack 13 also, and control group number and the group name of rechargeable battery set in real time, to adjust charging coefficient, ensures each battery pack equilibrium charging.
The process of balanced discharge is as follows: microcontroller 16 judges group number and the group name that can allow discharge battery group according to the state-of-charge information of the input power of the energy accumulation current converter preset and battery pack 13, then according to the discharge coefficient of each battery pack 13 of the state-of-charge information matches of battery pack 13, make battery pack 13 can balanced discharge.In discharge process, microcontroller 16 is the power of dynamic tracing energy-storage current transformer and the information of each battery pack 13 also, and the group number of real-time controlled discharge battery pack and group name, to adjust discharge coefficient, ensure each battery pack equilibrium discharge.
The second, control DC/DC module 12 is in resting state.
Control procedure is as follows: when energy accumulation current converter operate power is lower, then the conversion efficiency of battery energy storage system is also lower, therefore, microcontroller 16 can according to the state-of-charge information of battery pack 13 and operate power, one of them DC/DC module 12 is selected to be in resting state, can reach with this object reducing power consumption, thus improve the operational efficiency of battery energy storage system.
3rd, control DC/DC module 12 makes respective battery be in full charge maintenance state and battery charge demarcates state.
Wherein, the control procedure of full charge maintenance state is as follows:
Full charge is safeguarded, EMS 15 is according to ruuning situation, specify the battery pack of carrying out full charge maintenance, then assign full charge maintenance instruction (control information) to microcontroller 16, microcontroller 16 controls corresponding DC/DC module 12 according to this instruction and performs full charge maintenance program.Particularly, can by carrying out full charge maintenance with the positive energy exchange of electrical network or other battery pack.
The control procedure that battery charge demarcates state is as follows:
EMS 15 is according to the ruuning situation of battery energy storage system, and specify the battery pack 13 needing to carry out demarcating, and assign demarcation instruction, microcontroller 16 controls corresponding DC/DC module 12 and performs calibrating procedure.Particularly, can by demarcating with electrical network or other battery pack positive energy exchanges.
The energy storage two way convertor that the utility model provides, comprising: isolating transformer, three-phase AC/DC module, multiple DC/DC module in parallel and microcontroller.Connected from different battery pack by the DC/DC module of multiple parallel connection, independently can control the running status of battery pack, can realize, to the battery group management in battery energy storage system, improve the flexibility of battery energy storage system.
It should be noted that, the information of the battery management system that microcontroller obtains in battery energy storage system comprises: obtain the battery pack current state information in battery energy storage system, the information of voltage obtaining battery pack, current information, temperature information, state-of-charge and health status information.The control information obtaining EMS comprises: obtain and control three-phase AC/DC module information, obtain control DC/DC module information.
Wherein, microcontroller is by communication bus and three-phase AC/DC model calling; Microcontroller is by communication bus and DC/DC model calling; Microcontroller is connected with battery management system by communication bus; Microcontroller is connected with EMS by communication bus.
It should be noted that, in concrete enforcement, the connected mode and the communication mode that realize microcontroller and three-phase AC/DC module, DC/DC module, battery management system and EMS have a variety of, are not limited to the mode of communication bus.
Above energy storage two way convertor provided by the utility model is described in detail.Apply specific case herein to set forth principle of the present utility model and execution mode, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection range of the utility model claim.
Claims (5)
1. an energy storage two way convertor, is characterized in that, comprising: isolating transformer, three-phase AC/DC module, multiple DC/DC module in parallel and microcontroller;
Described isolating transformer and AC network and described three-phase AC/DC model calling;
Described three-phase AC/DC module and described DC/DC model calling;
Battery pack in each described DC/DC module and battery energy storage system connects one to one;
Described microcontroller is connected with the battery management system in described three-phase AC/DC module, described DC/DC module, EMS and described battery energy storage system, for controlling the operating state of described three-phase AC/DC module and described DC/DC module according to the information of described EMS;
Wherein, described battery management system is connected with described battery pack, and described battery management system is connected with described EMS.
2. energy storage two way convertor according to claim 1, is characterized in that, described microcontroller is by communication bus and described three-phase AC/DC model calling.
3. energy storage two way convertor according to claim 1, is characterized in that, described microcontroller is by communication bus and described DC/DC model calling.
4. energy storage two way convertor according to claim 1, is characterized in that, described microcontroller is connected with described battery management system by communication bus.
5. energy storage two way convertor according to claim 1, is characterized in that, described microcontroller is connected with described EMS by communication bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520673659.3U CN204886205U (en) | 2015-09-01 | 2015-09-01 | Energy storage two way convertor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520673659.3U CN204886205U (en) | 2015-09-01 | 2015-09-01 | Energy storage two way convertor |
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| CN204886205U true CN204886205U (en) | 2015-12-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048485A (en) * | 2015-09-01 | 2015-11-11 | 山东圣阳电源股份有限公司 | Energy storage bidirectional current converter and control method thereof |
| CN111555322A (en) * | 2020-04-21 | 2020-08-18 | 深圳市禾望电气股份有限公司 | Energy storage system |
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2015
- 2015-09-01 CN CN201520673659.3U patent/CN204886205U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048485A (en) * | 2015-09-01 | 2015-11-11 | 山东圣阳电源股份有限公司 | Energy storage bidirectional current converter and control method thereof |
| CN111555322A (en) * | 2020-04-21 | 2020-08-18 | 深圳市禾望电气股份有限公司 | Energy storage system |
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