CN107979109B - Energy mix power supply energy-storage system and energy storage method - Google Patents
Energy mix power supply energy-storage system and energy storage method Download PDFInfo
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- CN107979109B CN107979109B CN201810001963.1A CN201810001963A CN107979109B CN 107979109 B CN107979109 B CN 107979109B CN 201810001963 A CN201810001963 A CN 201810001963A CN 107979109 B CN107979109 B CN 107979109B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H02J3/383—
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- H02J3/386—
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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
-
- 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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
The invention discloses a kind of energy mix power supply energy-storage system and energy storage methods.Energy mix power supply energy-storage system include energy storage main road and it is several be connected with the energy storage main road for electric treatment branch；The energy storage main road includes connecting pin, DC charging device and energy-storage battery, and connecting pin is connected by DC charging device with energy-storage battery, further includes the total electric storage means being connected between connecting pin and ground terminal；Described for electric treatment branch includes incoming end for being connected with power generator, for picking out end with what energy storage main road connecting pin was connected, further includes the first electric storage means, voltage check device, DC-DC conversion equipment, the second electric storage means and counnter attack diode.The present invention is improved the utilization rate of mixed energy power supply system energy storage device, reduced costs, and improved the service life of energy storage device using the scheme of unified energy storage.
Description
Technical field
The present invention relates to a kind of energy mix power supply energy-storage systems, further relate to a kind of power supply energy storage side for energy mix
Method.
Background technique
To save petroleum, coal resources, environmental pollution is avoided, people greatly develop the cleaning such as wind energy, solar energy in recent years
The energy.
In the prior art, it is stored respectively after a variety of clean energy resource acquisitions, needs to distinguish for different energy power supply systems
Energy storage device is provided, energy storage device utilization rate is low, at high cost.Also, due to the systems such as wind energy, solar energy for electricity output by from
Right situation influence is big, unstable, easily damage energy storage device.
Summary of the invention
The invention proposes a kind of energy mix power supply energy-storage system and energy storage method, its object is to: (1) it is mixing energy
Source power supply system provides unified energy storage device, improves energy storage device utilization rate, reduces cost；(2) power supply output pulsation is reduced
Influence to the energy storage device service life.
Technical solution of the present invention is as follows:
A kind of energy mix power supply energy-storage system, including energy storage main road and several confessions being connected with the energy storage main road
Electric treatment branch；
The energy storage main road includes connecting pin, DC charging device and energy-storage battery, and connecting pin passes through DC charging device
It is connected with energy-storage battery, further includes the total electric storage means being connected between connecting pin and ground terminal；
It is described for electric treatment branch include incoming end for being connected with power generator, be used for and energy storage main road connecting pin
What is be connected picks out end, further includes the first electric storage means, voltage check device, DC-DC conversion equipment, the second electric storage means and counnter attack
Diode；
First electric storage means is connected between incoming end and ground terminal, and the voltage check device is connected with incoming end
To detect the voltage of incoming end, the input terminal of the DC-DC conversion equipment is connected with the incoming end, and output end passes through counnter attack
Diode is connected with end is picked out；Second electric storage means is connected between the output end and ground terminal of DC-DC conversion equipment；
It further include control module for electric treatment branch, the control module and voltage check device and DC-DC conversion equipment
It is respectively connected with, the access terminal voltage value measured according to voltage check device adjusts the control arteries and veins sent to DC-DC conversion equipment
The duty ratio of punching is so that DC-DC conversion equipment output voltage is constant.
As a further improvement of the present invention: the voltage check device includes analog-to-digital conversion module, the first current divider,
Two current dividers and linkage switching switch；
The linkage switching switch includes the first switching switch and the second switching switch of synchronization action；
The common end of first switching switch with voltage detecting point for being connected, the side electricity of normal-closed end and the first current divider
Stream end is connected, and normally open end is connected with the side current terminal of the second current divider；The other side current terminal of first current divider and
The other side current terminal of two current dividers is connected with ground terminal；
The common end of second switching switch is connected with analog-to-digital conversion module, the potential end phase of normal-closed end and the first current divider
Connection, normally open end is connected with the potential end of the second current divider.
As a further improvement of the present invention: the linkage switching switch includes matrix, electromagnet, sliding block and spring, institute
State that coil one end on electromagnet is connected with voltage detecting point corresponding to affiliated voltage check device, the other end passes through resistance
It is connected with ground terminal；The sliding block is set between electromagnet and spring, is slidably matched with matrix, and sliding block is equipped with sheet metal；
The spring one end is connected with sliding block, the other end is connected with matrix；
The first switching switch and the second switching, which are switched, realizes that synchronism switching, sliding block are equipped with two groups of T shapes by sliding block
The common end of metal contact piece, each switching switch is in contact with the horizontal component of T shape contact always, normal-closed end and normally open end be used for
The vertical portion of T shape contact is in contact.
As a further improvement of the present invention: the linkage switching switch further includes the first magnetic patch and the second magnetic patch, works as cunning
When block moves to the position that common end is conducted with corresponding normal-closed end, sheet metal and the first magnetic patch are attracting, when slide block movement arrives
When the position that common end is conducted with corresponding normally open end, sheet metal and the second magnetic patch are attracting.
Energy storage method based on above-mentioned energy mix power supply energy-storage system: the linkage switching switch is additionally provided with position
Sensor is in normally closed position or normally open position for detecting sliding block；
The detected value U that the control module is exported according to the state and analog-to-digital conversion module of the position sensori,
The square wave for being δ to DC-DC conversion equipment output duty cycle by PWM mode, it is describedThe UoFor DC charging dress
The nominal input voltage set；
The obtaining value method of ε in above formula are as follows:
(A) a buffering duration value T is preset；
(B) when position sensor detects that sliding block slides into normally open position from normally closed position, the T duration that starts this moment in,Then ε=0, until:
(C) when position sensor detects that sliding block slides into normally closed position from normally open position, the T duration that starts this moment in,Then ε=1 repeats until position sensor detects that sliding block slides into normally open position from normally closed position
Above-mentioned steps (B).
Compared with the existing technology, the present invention has the positive effect that: (1) present invention is mentioned using the scheme of unified energy storage
The high utilization rate of mixed energy power supply system energy storage device, reduces costs；(2) voltage check device has according to voltage value
The function of automatic switchover uses lesser current divider, improves inspection when voltage is higher using the current divider of big resistance value when lower
Survey precision and service life；(3) transformation of voltage check device connection switching switch is directly determined by voltage value, when voltage value becomes
When change, the variation of electromagnet coils current synchronization then makes slide position change, realizes the switching of switch；(4) basis is cut
The state for changing switch controls the control duty cycle square wave that DC-DC is converted, and after variation occurs in voltage, switches switching
Meanwhile control module further corrects voltage conversion ratio according to switch instances, if voltage is lower by height, gradually decreases
The output voltage values of branch avoid power generator later period voltage from quickly falling and generate impact to charging circuit, if voltage is by low change
The output voltage values of branch are then gradually turned up in height, avoid voltage from increasing suddenly at this time and generate impact to subsequent conditioning circuit, to reduce
Influence of the power supply output pulsation to the energy storage device service life；(5) setting of sliding block both ends magnetic patch, sliding block when can be avoided voltage fluctuation
Frequent switching further improves the stability of system.
Detailed description of the invention
Structural schematic diagram when Fig. 1 is present invention application.
Fig. 2 is the structural schematic diagram of voltage check device.
Fig. 3 is the structural schematic diagram of voltage check device linkage switching switch.
Specific embodiment
The technical solution that the invention will now be described in detail with reference to the accompanying drawings:
Such as Fig. 1, a kind of energy mix power supply energy-storage system is connected including energy storage main road and with the energy storage main road
Powered by wind energy handles branch and solar powered processing branch；
The energy storage main road includes connecting pin, DC charging device 15 and energy-storage battery 16, and connecting pin passes through DC charging
Device 15 is connected with energy-storage battery 16, further includes the total electric storage means 14 being connected between connecting pin and ground terminal；
The powered by wind energy processing branch includes the access for being connected by fairing 2 with wind electricity generating system 1
End, for picking out end with what energy storage main road connecting pin was connected, further include the first electric storage means of wind energy 3, wind energy voltage check device,
Wind energy DC-DC conversion equipment 5, the second electric storage means of wind energy 6 and wind energy counnter attack diode 7；
The solar powered processing branch include incoming end for being connected with device of solar generating 8, for
What energy storage main road connecting pin was connected picks out end, further includes the first electric storage means of solar energy 9, solar voltage detection device, the sun
It can DC-DC conversion equipment 11, the second electric storage means of solar energy 12 and solar energy counnter attack diode 13；
In each branch, first electric storage means is connected between incoming end and ground terminal, the voltage check device with connect
Enter end to be connected to detect the voltage of incoming end, the input terminal of the DC-DC conversion equipment is connected with the incoming end, output
End is connected by counnter attack diode with end is picked out；Second electric storage means is connected to the output end of DC-DC conversion equipment and connects
Between ground terminal；
It further include control module for electric treatment branch, the control module and voltage check device and DC-DC conversion equipment
It is respectively connected with, the access terminal voltage value measured according to voltage check device adjusts the control arteries and veins sent to DC-DC conversion equipment
The duty ratio of punching is so that DC-DC conversion equipment output voltage is constant.
The voltage check device is preferably by the way of change detection: such as Fig. 2, including analog-to-digital conversion module 101, first
Current divider 102, the second current divider 103 and linkage switching switch 104；Two current divider resistance values are different, pass through when voltage is higher
Switching switch accesses the current divider of larger resistance value, the current divider of the smaller resistance value of access when voltage is lower.
The linkage switching switch 104 includes the first switching switch and the second switching switch of synchronization action；
The common end of first switching switch with voltage detecting point for being connected, and the one of normal-closed end and the first current divider 102
Side current terminal is connected, and normally open end is connected with the side current terminal of the second current divider 103；The other side of first current divider 102
The other side current terminal of current terminal and the second current divider 103 is connected with ground terminal；
The common end of second switching switch is connected with analog-to-digital conversion module 101, the electricity of normal-closed end and the first current divider 102
Position end is connected, and normally open end is connected with the potential end of the second current divider 103.
Automatically switched to realize according to the voltage of test point: such as Fig. 3, the linkage switching switch 104 includes matrix, electricity
Coil one end and affiliated voltage check device on magnet 104-1, sliding block 104-2 and spring 104-3, the electromagnet 104-1
Corresponding voltage detecting point is connected, the other end is connected by resistance with ground terminal；The sliding block 104-2 is set to electromagnet
It between 104-1 and spring 104-3, is slidably matched with matrix, sliding block 104-2 is equipped with sheet metal；The one end the spring 104-3 with
Sliding block 104-2 is connected, the other end is connected with matrix；
The first switching switch and the second switching, which are switched, realizes synchronism switching by sliding block 104-2, sets on sliding block 104-2
There are two groups of T shape metal contact pieces, the common end of each switching switch is in contact with the horizontal component of T shape contact always, normal-closed end and often
Beginning with the vertical portion of T shape contact for being in contact.
When voltage is higher, electromagnet 104-1 electric current is larger, it is sufficient to sliding block 104-2 is drawn onto left side, at this time each common end
It is conducted by T shape metal contact piece with normal-closed end, i.e. arrival normally closed position, as the voltage decreases, electromagnet 104-1 is to sliding block
The suction of 104-2 is less than the pulling force of spring 104-3, and sliding block 104-2 is pulled to right side by spring 104-3, and common end passes through T shape at this time
Metal contact piece is conducted with normally open end, i.e. arrival normally open position.
When to avoid voltage fluctuation, linkage switching 104 frequent switching of switch, it further includes that the linkage, which switches switch 104,
One magnetic patch 104-4 and the second magnetic patch 104-5, when sliding block 104-2 moves to the position that common end is conducted with corresponding normal-closed end
When, sheet metal and the first magnetic patch 104-4 are attracting, when sliding block 104-2 moves to the position that common end is conducted with corresponding normally open end
When setting, sheet metal and the second magnetic patch 104-5 are attracting.By above-mentioned design, so that the switching threshold of voltage when high voltage variable low pressure
Switching threshold when pressure is got higher less than low pressure, avoids frequent switching problem.
The linkage switching switch 104 is additionally provided with position sensor, incudes to sheet metal, for detecting sliding block
104-2 is in normally closed position or normally open position；
DC-DC conversion equipment is adjusted voltage by pulse width modulation: the control module is according to
The detected value U of state and analog-to-digital conversion module 101 output of position sensori, by PWM mode to DC-DC conversion equipment
Output duty cycle is the square wave of δ, describedThe UoFor the nominal input voltage of DC charging device 15；
The obtaining value method of ε in above formula are as follows:
(A) default buffering duration value T, preferably 20 minutes；
(B) when position sensor detects that sliding block 104-2 slides into normally open position from normally closed position, i.e., voltage starts to drop
It is low, it is often as the abatement of wind or sunlight irradiation is affected, after such situation continues for some time, power generator output
Voltage very likely rapid decrease, to avoid causing to impact to charging circuit, the T duration that starts this moment in,Then ε=0 is slowly decreased output voltage, voltage output is finally down to 0, enters branch
Dormant state, even if being fluctuated during this, the undulate quantity of voltage as the reduction of ε and be contracted by, until:
(C) when position sensor detects that sliding block 104-2 slides into normally closed position from normally open position, i.e., voltage starts to reduce,
It is often as that wind-force starts enhancing or solar irradiation penetrates disturbing factor to eliminate, after such situation continues for some time, power generation
The voltage of device output can rapid increase, in the T duration started this moment,Then ε=1 keeps branch slow
Slowly enter working condition, even if being fluctuated during this, the undulate quantity of voltage as ε does not reach 1 and is contracted by,
Until position sensor detects that sliding block 104-2 slides into normally open position from normally closed position, repeat the above steps (B).
Claims (2)
- The energy storage method 1. a kind of energy mix is powered, it is characterised in that: this method is based on energy mix power supply energy-storage system；The energy mix power supply energy-storage system includes at energy storage main road and several power supplies being connected with the energy storage main road Manage branch；The energy storage main road includes connecting pin, DC charging device (15) and energy-storage battery (16), and connecting pin passes through DC charging Device (15) is connected with energy-storage battery (16), further includes the total electric storage means (14) being connected between connecting pin and ground terminal；Described for electric treatment branch includes incoming end for being connected with power generator, for being connected with energy storage main road connecting pin What is connect picks out end, further includes the first electric storage means, voltage check device, two pole of DC-DC conversion equipment, the second electric storage means and counnter attack Pipe；First electric storage means is connected between incoming end and ground terminal, and the voltage check device is connected to examine with incoming end The voltage of incoming end is surveyed, the input terminal of the DC-DC conversion equipment is connected with the incoming end, and output end passes through two pole of counnter attack It manages and picks out end and be connected；Second electric storage means is connected between the output end and ground terminal of DC-DC conversion equipment；It further include control module for electric treatment branch, the control module and voltage check device and DC-DC conversion equipment are distinguished It is connected, the access terminal voltage value measured according to voltage check device adjusts the control pulse sent to DC-DC conversion equipment Duty ratio is so that DC-DC conversion equipment output voltage is constant；The voltage check device includes analog-to-digital conversion module (101), the first current divider (102), the second current divider (103) and connection Dynamic switching switch (104)；The linkage switching switch (104) includes the first switching switch and the second switching switch of synchronization action；The common end of first switching switch with voltage detecting point for being connected, the side of normal-closed end and the first current divider (102) Current terminal is connected, and normally open end is connected with the side current terminal of the second current divider (103)；First current divider (102) it is another The other side current terminal of side current terminal and the second current divider (103) is connected with ground terminal；The common end of second switching switch is connected with analog-to-digital conversion module (101), the electricity of normal-closed end and the first current divider (102) Position end is connected, and normally open end is connected with the potential end of the second current divider (103)；Linkage switching switch (104) includes matrix, electromagnet (104-1), sliding block (104-2) and spring (104-3), described Coil one end on electromagnet (104-1) is connected with voltage detecting point corresponding to affiliated voltage check device, the other end is logical Resistance is crossed to be connected with ground terminal；The sliding block (104-2) is set between electromagnet (104-1) and spring (104-3), with matrix It is slidably matched, sliding block (104-2) is equipped with sheet metal；Described spring one end (104-3) is connected with sliding block (104-2), is another End is connected with matrix；The first switching switch and the second switching, which are switched, realizes synchronism switching by sliding block (104-2), sets on sliding block (104-2) There are two groups of T shape metal contact pieces, the common end of each switching switch is in contact with the horizontal component of T shape contact always, normal-closed end and often Beginning with the vertical portion of T shape contact for being in contact；Linkage switching switch (104) is additionally provided with position sensor, for detect sliding block (104-2) be in normally closed position or Normally open position；The detected value U that the control module is exported according to the state and analog-to-digital conversion module (101) of the position sensori, The square wave for being δ to DC-DC conversion equipment output duty cycle by PWM mode, it is describedThe UoFor DC charging dress Set the nominal input voltage of (15)；The obtaining value method of ε in above formula are as follows:(A) a buffering duration value T is preset；(B) when position sensor detects that sliding block (104-2) slides into normally open position from normally closed position, the T duration that starts this moment It is interior,Then ε=0, until:(C) when position sensor detects that sliding block (104-2) slides into normally closed position from normally open position, the T duration that starts this moment in,Then ε=1, until position sensor detects that sliding block (104-2) slides into normally opened position from normally closed position It sets, repeat the above steps (B).
- The energy storage method 2. energy mix as described in claim 1 is powered, it is characterised in that: the linkage switching switch (104) Further include the first magnetic patch (104-4) and the second magnetic patch (104-5), when sliding block (104-2) move to common end with it is corresponding normally closed Hold be conducted position when, sheet metal and the first magnetic patch (104-4) are attracting, when sliding block (104-2) move to common end with it is corresponding Normally open end be conducted position when, sheet metal and the second magnetic patch (104-5) are attracting.
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| CN201810001963.1A CN107979109B (en) | 2018-01-02 | 2018-01-02 | Energy mix power supply energy-storage system and energy storage method |
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| CN201810001963.1A CN107979109B (en) | 2018-01-02 | 2018-01-02 | Energy mix power supply energy-storage system and energy storage method |
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| CN107979109B true CN107979109B (en) | 2019-06-25 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106567A (en) * | 1993-09-24 | 1995-08-09 | 富士电机株式会社 | Driving circuit of electromagnetic switch |
| CN102891494A (en) * | 2011-07-19 | 2013-01-23 | Zbb能源公司 | Method and apparatus for controlling a hybrid power system |
| CN206431199U (en) * | 2017-02-17 | 2017-08-22 | 烟台海博电气设备有限公司 | A kind of lithium battery BMS system power detection modules |
| CN107251432A (en) * | 2015-02-24 | 2017-10-13 | 株式会社自动网络技术研究所 | Current control device and power-supply system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012039686A (en) * | 2010-08-04 | 2012-02-23 | Hitachi Ltd | System operation method using storage battery |
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2018
- 2018-01-02 CN CN201810001963.1A patent/CN107979109B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106567A (en) * | 1993-09-24 | 1995-08-09 | 富士电机株式会社 | Driving circuit of electromagnetic switch |
| CN102891494A (en) * | 2011-07-19 | 2013-01-23 | Zbb能源公司 | Method and apparatus for controlling a hybrid power system |
| CN107251432A (en) * | 2015-02-24 | 2017-10-13 | 株式会社自动网络技术研究所 | Current control device and power-supply system |
| CN206431199U (en) * | 2017-02-17 | 2017-08-22 | 烟台海博电气设备有限公司 | A kind of lithium battery BMS system power detection modules |
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Effective date of registration: 20200402 Address after: 264003 No. 2501, unit 1, building 9, No. 1167, gangchengdong street, Laishan District, Yantai City, Shandong Province Patentee after: Wang Jin Address before: 264000, room 97, building 16, 312 Hing Yuen Road, Zhifu District, Shandong, Yantai Patentee before: YANTAI QINXUN MACHINERY TECHNOLOGY Co.,Ltd. |
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