CN203466592U - Starting circuit for photovoltaic energy-storage system of off-grid type - Google Patents
Starting circuit for photovoltaic energy-storage system of off-grid type Download PDFInfo
- Publication number
- CN203466592U CN203466592U CN201320514862.7U CN201320514862U CN203466592U CN 203466592 U CN203466592 U CN 203466592U CN 201320514862 U CN201320514862 U CN 201320514862U CN 203466592 U CN203466592 U CN 203466592U
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- Prior art keywords
- management system
- battery management
- transducer
- switch
- lithium ion
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- 238000004146 energy storage Methods 0.000 title claims abstract description 26
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 39
- 238000006243 chemical reaction Methods 0.000 claims description 27
- 238000004891 communication Methods 0.000 claims description 12
- 230000009466 transformation Effects 0.000 abstract 2
- 238000001514 detection method Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 208000032953 Device battery issue Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a starting circuit for a photovoltaic energy-storage system of an off-grid type. The starting circuit comprises a lithium ion battery, a BMS battery management system, a time-delay switch, a contactor, a first DC/DC converter, and a second DC/DC converter. The lithium ion battery is connected with the BMS battery management system and one end of the time-delay switch, and the other end of the time-delay switch is connected with the input end of the first DC/DC converter. The output end of the first DC/DC converter is connected with the BMS battery management system. The BMS battery management system is also connected with one end of the contactor, and the other end of the contactor is connected with the input end of the first DC/DC converter and the input end of the second DC/DC converter. The BMS battery management system is also connected with two ends of a coil of the contactor. The output end of the second DC/DC converter is connected with a PCS energy transformation system. The starting circuit provided by the utility model can detect the lithium ion battery at first before power is supplied to the PCS energy transformation system, thereby guaranteeing the safety of the system.
Description
Technical field
The utility model relates to a kind of start-up circuit, relates in particular to a kind of start-up circuit from net type photovoltaic energy storage system.
Background technology
PCS energy conversion system in net type photovoltaic energy storage system is changed Hou Gei family load supplying for the energy that photovoltaic module is produced.Start-up circuit from net type photovoltaic energy storage system is used for starting the work of PCS energy conversion system.The start-up circuit of PCS energy conversion system comprises lithium ion battery and BMS battery management system, and lithium ion battery is given the power supply of PCS energy conversion system under the control of BMS battery management system.When the current PCS energy conversion system from net type photovoltaic energy storage system starts, lithium ion battery is given BMS battery management system and the power supply of PCS energy conversion system simultaneously, and BMS battery management system is monitored lithium ion battery.Yet, PCS energy conversion system obtain electric before, BMS battery management system can not first detect lithium ion battery, thereby can not, guaranteeing that lithium ion battery gives the power supply of PCS energy conversion system after normal condition again, to system, bring potential safety hazard.
Summary of the invention
The purpose of this utility model is to overcome the existing start-up circuit from net type photovoltaic energy storage system can not before to the power supply of PCS energy conversion system, first to lithium ion battery, detect, to system, bring the technical problem of potential safety hazard, a kind of start-up circuit from net type photovoltaic energy storage system is provided, it can first detect lithium ion battery before giving the power supply of PCS energy conversion system, guarantees system safety.
In order to address the above problem, the utility model is achieved by the following technical solutions:
A kind of start-up circuit from net type photovoltaic energy storage system of the present utility model, comprise lithium ion battery, BMS battery management system, delay switch, contactor, the one DC/DC transducer and the 2nd DC/DC transducer, the output of described lithium ion battery is connected with the input of BMS battery management system and one end of delay switch, the described delay switch other end is connected with the input of a DC/DC transducer, the output of the one DC/DC transducer is connected with the power end of BMS battery management system, the output of described BMS battery management system is connected with normally opened contact switch one end of contactor, the normally opened contact switch other end of described contactor is connected with the input of the 2nd DC/DC transducer with the input of a DC/DC transducer, described BMS battery management system is also connected with the coil two ends of contactor, the output of described the 2nd DC/DC transducer is connected with the PCS energy conversion system in net type photovoltaic energy storage system.
In the technical program, when system starts, press delay switch, delay switch disconnected after closed a period of time.Within the period of delay switch closure, it is the power supply of BMS battery management system that a DC/DC transducer is converted to 24V direct current by the 230V direct current of lithium ion battery output, and BMS battery management system obtains electric work.The signals such as the voltage of BMS battery management system detection lithium ion battery, electric current, temperature, and these signals are processed, judge that whether lithium ion battery is in normal condition.
If lithium ion battery is in normal condition, BMS battery management system is to the coil electricity of contactor, the normally opened contact switch of contactor is closed, the direct current of lithium ion battery output is given the power supply of BMS battery management system after a DC/DC transducer conversion, after the 2nd DC/DC transducer conversion, give the power supply of PCS energy conversion system, PCS energy conversion system obtains electric work, realizes normally and starting.If lithium ion battery breaks down, BMS battery management system is not given the coil electricity of contactor, and the normally opened contact switch of contactor remains open state, guarantees system safety.
As preferably, described a kind of start-up circuit from net type photovoltaic energy storage system also comprises CPU and display screen, and described CPU is connected with display screen with BMS battery management system respectively.
BMS battery management system sends to CPU by the battery information of detection, and central processing unit controls display screen shows relevant information, is convenient to the working condition that staff grasps battery.When BMS battery management system detects lithium ion battery failure, show the prompting of screen display fault.
As preferably, described a kind of start-up circuit from net type photovoltaic energy storage system also comprises voice guard, and described voice guard is connected with CPU.When BMS battery management system detects battery failures, central processing unit controls voice guard sends warning.
As preferably, described a kind of start-up circuit from net type photovoltaic energy storage system also comprises mains switch, described mains switch one end is connected with the output of lithium ion battery, the described mains switch other end is connected with the input of BMS battery management system and one end of delay switch, and the described delay switch other end is connected with the input of a DC/DC transducer.
As preferably, described a kind of start-up circuit from net type photovoltaic energy storage system also comprises electronic switch and wireless communication module, described electronic switch is in parallel with delay switch, the control end of described electronic switch is connected with CPU respectively with wireless communication module, and described wireless communication module connects by wireless network the wireless handheld terminal that staff carries.
CPU communicates by wireless communication module and wireless handheld terminal, sends the monitor data of lithium ion battery to wireless handheld terminal, is convenient to staff's remote monitoring.Staff also can send starting command to CPU by wireless handheld terminal, disconnects, thereby realize the remote activation of PCS energy conversion system after central processing unit controls electronic switch closes a period of time.
The beneficial effects of the utility model are: when (1) starts PCS energy conversion system, can before giving the power supply of PCS energy conversion system, first to lithium ion battery, detect, if lithium ion battery breaks down, do not give the power supply of PCS energy conversion system, send warning simultaneously, guarantee system safety.(2) can remote activation from the PCS energy conversion system of net type photovoltaic energy storage system, lithium ion battery is carried out to remote monitoring.
Accompanying drawing explanation
Fig. 1 is that a kind of circuit theory of the present utility model connects block diagram.
In figure: 1, lithium ion battery, 2, BMS battery management system, 3, delay switch, 4, contactor, the 5, the one DC/DC transducer, the 6, the 2nd DC/DC transducer, 7, CPU, 8, display screen, 9, voice guard, 10, mains switch, 11, electronic switch, 12, wireless communication module, 13, wireless handheld terminal, 14, PCS energy conversion system.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of start-up circuit from net type photovoltaic energy storage system of the present utility model, as shown in Figure 1, comprise lithium ion battery 1, BMS battery management system 2, delay switch 3, contactor 4, the one DC/DC transducer 5, the 2nd DC/DC transducer 6, CPU 7, display screen 8, voice guard 9, mains switch 10, electronic switch 11 and wireless communication module 12, the output of lithium ion battery 1 is connected with mains switch 10 one end, mains switch 10 other ends are connected with one end of delay switch 3 with the input of BMS battery management system 2, delay switch 3 other ends are connected with the input of a DC/DC transducer 5, the output of the one DC/DC transducer 5 is connected with the power end of BMS battery management system 2, the output of BMS battery management system 2 is connected with normally opened contact switch one end of contactor 4, the normally opened contact switch other end of contactor 4 is connected with the input of the 2nd DC/DC transducer 6 with the input of a DC/DC transducer 5, BMS battery management system 2 is also connected with the coil two ends of contactor 4, the output of the 2nd DC/DC transducer 6 is connected with the PCS energy conversion system 14 in net type photovoltaic energy storage system, electronic switch 11 is in parallel with delay switch 3, CPU 7 respectively with BMS battery management system 2, display screen 8, voice guard 9, wireless communication module 12 is connected with the control end of electronic switch 11, wireless communication module 12 connects by wireless network the wireless handheld terminal 13 that staff carries.
If lithium ion battery 1 is in normal condition, BMS battery management system 2 is given 4 coil electricities of contactor, the normally opened contact switch of contactor 4 is closed, the direct current of lithium ion battery 1 output gives BMS battery management system 2 power supplies after DC/DC transducer 5 conversions, after the 2nd DC/DC transducer 6 conversions, give PCS energy conversion system 14 power supplies, PCS energy conversion system 14 obtains electric work, from net type photovoltaic energy storage system, normally starts work.If lithium ion battery 1 breaks down, BMS battery management system 2 is not given the coil electricity of contactor 4, the normally opened contact switch of contactor 4 remains open state, guarantee system safety, simultaneously, BMS battery management system 2 sends alarm signal to CPU 7, and CPU 7 is controlled voice guard 9 and sent warning.
During 2 work of BMS battery management system, the battery information of detection is sent to CPU 7, CPU 7 is controlled display screen 8 and is shown relevant information, is convenient to the working condition that staff grasps battery.
CPU 7 communicates by wireless communication module 12 and wireless handheld terminal 13, sends the monitor data of lithium ion battery 1 to wireless handheld terminal 13, is convenient to staff's remote monitoring.Staff also can send starting command to CPU 7 by wireless handheld terminal 13, and CPU 7 is controlled electronic switch 11 and disconnected after closed a period of time, thereby realizes the remote activation from net type photovoltaic energy storage system.
Claims (5)
1. the start-up circuit from net type photovoltaic energy storage system, it is characterized in that: comprise lithium ion battery (1), BMS battery management system (2), delay switch (3), contactor (4), the one DC/DC transducer (5) and the 2nd DC/DC transducer (6), the output of described lithium ion battery (1) is connected with one end of delay switch (3) with the input of BMS battery management system (2), described delay switch (3) other end is connected with the input of a DC/DC transducer (5), the output of the one DC/DC transducer (5) is connected with the power end of BMS battery management system (2), the output of described BMS battery management system (2) is connected with normally opened contact switch one end of contactor (4), the normally opened contact switch other end of described contactor (4) is connected with the input of the 2nd DC/DC transducer (6) with the input of a DC/DC transducer (5), described BMS battery management system (2) is also connected with the coil two ends of contactor (4), the output of described the 2nd DC/DC transducer (6) is connected with the PCS energy conversion system (14) in net type photovoltaic energy storage system.
2. a kind of start-up circuit from net type photovoltaic energy storage system according to claim 1, it is characterized in that: also comprise CPU (7) and display screen (8), described CPU (7) is connected with display screen (8) with BMS battery management system (2) respectively.
3. a kind of start-up circuit from net type photovoltaic energy storage system according to claim 2, is characterized in that: also comprise voice guard (9), described voice guard (9) is connected with CPU (7).
4. according to a kind of start-up circuit from net type photovoltaic energy storage system described in claim 1 or 2 or 3, it is characterized in that: also comprise mains switch (10), described mains switch (10) one end is connected with the output of lithium ion battery (1), described mains switch (10) other end is connected with one end of delay switch (3) with the input of BMS battery management system (2), and described delay switch (3) other end is connected with the input of a DC/DC transducer (5).
5. according to a kind of start-up circuit from net type photovoltaic energy storage system described in claim 2 or 3, it is characterized in that: also comprise electronic switch (11) and wireless communication module (12), described electronic switch (11) is in parallel with delay switch (3), the control end of described electronic switch (11) is connected with CPU (7) respectively with wireless communication module (12), and described wireless communication module (12) connects by wireless network the wireless handheld terminal (13) that staff carries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514862.7U CN203466592U (en) | 2013-08-22 | 2013-08-22 | Starting circuit for photovoltaic energy-storage system of off-grid type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514862.7U CN203466592U (en) | 2013-08-22 | 2013-08-22 | Starting circuit for photovoltaic energy-storage system of off-grid type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203466592U true CN203466592U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320514862.7U Expired - Fee Related CN203466592U (en) | 2013-08-22 | 2013-08-22 | Starting circuit for photovoltaic energy-storage system of off-grid type |
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| Country | Link |
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| CN (1) | CN203466592U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656182A (en) * | 2014-11-12 | 2016-06-08 | 比亚迪股份有限公司 | Energy storage system and distribution system thereof |
| CN107834708A (en) * | 2017-11-21 | 2018-03-23 | 宁德时代新能源科技股份有限公司 | Starting circuit and method of energy storage system |
| CN115241960A (en) * | 2022-08-25 | 2022-10-25 | 兴数能源科技有限公司 | A power supply device, system and method for an optical storage microgrid control system |
-
2013
- 2013-08-22 CN CN201320514862.7U patent/CN203466592U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656182A (en) * | 2014-11-12 | 2016-06-08 | 比亚迪股份有限公司 | Energy storage system and distribution system thereof |
| CN105656182B (en) * | 2014-11-12 | 2018-08-14 | 比亚迪股份有限公司 | Energy-storage system and its distribution system |
| CN107834708A (en) * | 2017-11-21 | 2018-03-23 | 宁德时代新能源科技股份有限公司 | Starting circuit and method of energy storage system |
| CN107834708B (en) * | 2017-11-21 | 2019-11-08 | 宁德时代新能源科技股份有限公司 | A startup circuit and method for an energy storage system |
| CN115241960A (en) * | 2022-08-25 | 2022-10-25 | 兴数能源科技有限公司 | A power supply device, system and method for an optical storage microgrid control system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20170822 |