CN209658969U - A kind of lithium iron phosphate storage battery discontinuity float charger - Google Patents
A kind of lithium iron phosphate storage battery discontinuity float charger Download PDFInfo
- Publication number
- CN209658969U CN209658969U CN201920723822.0U CN201920723822U CN209658969U CN 209658969 U CN209658969 U CN 209658969U CN 201920723822 U CN201920723822 U CN 201920723822U CN 209658969 U CN209658969 U CN 209658969U
- Authority
- CN
- China
- Prior art keywords
- storage battery
- iron phosphate
- lithium iron
- phosphate storage
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The utility model relates to a kind of lithium iron phosphate storage battery discontinuity float chargers, including direct-current supervision device, disconnect switch, contactor, diode, lithium iron phosphate storage battery group and by-pass switch；The positive terminals of the disconnect switch are respectively connected to one end of one end of contactor, the cathode of diode and by-pass switch, the negative terminals of the disconnect switch are connected to the cathode of lithium iron phosphate storage battery group, the anode of the diode, the other end of contactor, the anode of lithium iron phosphate storage battery group and by-pass switch the other end be connected；The contactor is controlled by the direct-current supervision device, and the by-pass switch is being in an off state under normal conditions, and the disconnect switch is connected with DC bus, and the lithium iron phosphate storage battery group is equipped with BMS system, which is connected with direct-current supervision device communication.The utility model makes it possible the discontinuity floating charging of lithium iron phosphate storage battery.
Description
Technical field
The utility model relates to transforming plant DC power system design field, especially a kind of lithium iron phosphate storage battery interruption
Property float charger.
Background technique
It is known, battery as the independent backup power source of station direct current system, exchange have a power failure when backup power source be signal,
Control is closed a floodgate, comprehensive automation offer electrical source of power, is the last line of defense for ensureing direct current system reliability.
Ferric phosphate lithium cell is because its is standing the features such as small in size, light-weight, energy ratio is high, safety and environmental protection, maintainability
With in direct current system using more and more extensive.Application of the ferric phosphate lithium cell in DC power system in the prior art is all
It is directly to hang on DC bus, the uninterrupted power supply of power supply is realized when exchanging power loss.
It is some due to ferric phosphate lithium cell group itself in the existing DC power system based on ferric phosphate lithium cell
Characteristic issues (such as: consistency is bad), cause battery pack to generate the unbalanced energy situation of monomer voltage, if charged for a long time
It may result in inside battery partial monosomy and occur overcharging adverse effects even on fire etc..
Summary of the invention
In view of this, making the purpose of the utility model is to provide a kind of lithium iron phosphate storage battery discontinuity float charger
The discontinuity floating charging for obtaining lithium iron phosphate storage battery is possibly realized.
The utility model is realized using following scheme: a kind of lithium iron phosphate storage battery discontinuity float charger, including straight
Direct-current supervision device in streaming system, the charger being electrical connected with DC bus, further include disconnect switch, contactor, diode,
Lithium iron phosphate storage battery group and by-pass switch；
The positive terminals of the disconnect switch are respectively connected to one end of contactor, the cathode of diode and bypass and open
One end of pass, the negative terminals of the disconnect switch are connected to the cathode of lithium iron phosphate storage battery group, the anode of the diode,
The other end of the other end of contactor, the anode of lithium iron phosphate storage battery group and by-pass switch is connected；The contactor is by institute
The control of direct-current supervision device is stated, the by-pass switch is being in an off state under normal conditions, and the disconnect switch is connected with DC bus,
The lithium iron phosphate storage battery group is equipped with BMS system, which is connected with direct-current supervision device communication.
Further, the diode uses heavy-duty diode, to ensure that discharge loop is connected always.
Preferably, the BMS system calculates the battery parameter including SOC value of lithium iron phosphate storage battery group in real time,
And it is uploaded to direct-current supervision device, direct-current supervision device determines whether to fill to battery pack according to the battery parameter including SOC value
Electricity；When needing to charge to battery pack, direct-current supervision device control contactor closure, lithium iron phosphate storage battery group is directly attempted by mother
On line, charger is powered to lithium iron phosphate storage battery group；When not needing to charge to battery pack, direct-current supervision device control contactor
It disconnects, lithium iron phosphate storage battery group is detached from DC bus and is in static condition.
When the charger that is connected on DC bus operates normally, diode is in reverse state and disconnects, when not needing
When charging to battery pack, direct-current supervision device control contactor is disconnected, and lithium iron phosphate storage battery group is detached from DC bus and is in standing
State, if direct-current supervision device judges that lithium iron phosphate storage battery group needs charging to be closed D.C. contactor, battery is directly simultaneously
It connects on bus, charger gives DC load and storage battery power supply simultaneously.
When the charger on DC bus is without output, due to reversal connection diode forward conducting, battery can be free of discontinuities
Ground is to DC bus powered, to will not influence the reliability of direct current system.
Further, the diode is propped up using the heavy-duty diode of reversal connection to ensure that discharge loop is connected always
Hold electric discharge (nanosecond) free of discontinuities.
Preferably, when needed, control by-pass switch closure switches to direct connection circuit when by-pass switch closure.
Preferably, the BMS system in lithium iron phosphate storage battery group in the present invention is capable of voltage, the electricity of real-time monitoring battery
The parameters such as stream, internal resistance, temperature, SOC adjust the time accounting of discontinuous floating charging, to be most suitable for battery operation.Wherein, institute
Direct-current supervision device is stated using existing product on the market, does not need to be particularly limited to model.
Compared with prior art, the utility model has the following beneficial effects: device provided by the utility model makes phosphorus
Sour iron lithium storage battery group can be attempted by bus by contactor or be detached from bus standing, so that lithium iron phosphate storage battery
Discontinuity floating charging is possibly realized.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model embodiment.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and embodiments.
As shown in Figure 1, present embodiments providing a kind of lithium iron phosphate storage battery discontinuity float charger, including direct current system
The charger that direct-current supervision device and DC bus in system are electrical connected, further includes disconnect switch, contactor, diode, phosphoric acid
Iron lithium storage battery group and by-pass switch；
The positive terminals of the disconnect switch are respectively connected to one end of contactor, the cathode of diode and bypass and open
One end of pass, the negative terminals of the disconnect switch are connected to the cathode of lithium iron phosphate storage battery group, the anode of the diode,
The other end of the other end of contactor, the anode of lithium iron phosphate storage battery group and by-pass switch is connected；The contactor is by institute
The control of direct-current supervision device is stated, the by-pass switch is being in an off state under normal conditions, and the disconnect switch is connected with DC bus,
The lithium iron phosphate storage battery group is equipped with BMS system, which is connected with direct-current supervision device communication.
In the present embodiment, the diode uses heavy-duty diode, to ensure that discharge loop is connected always.
Preferably, the BMS system calculates the battery parameter including SOC value of lithium iron phosphate storage battery group in real time,
And it is uploaded to direct-current supervision device, direct-current supervision device determines whether to fill to battery pack according to the battery parameter including SOC value
Electricity；When needing to charge to battery pack, direct-current supervision device control contactor closure, lithium iron phosphate storage battery group is directly attempted by mother
On line, charger is powered to lithium iron phosphate storage battery group；When not needing to charge to battery pack, direct-current supervision device control contactor
It disconnects, lithium iron phosphate storage battery group is detached from DC bus and is in static condition.
When the charger that is connected on DC bus operates normally, diode is in reverse state and disconnects, when not needing
When charging to battery pack, direct-current supervision device control contactor is disconnected, and lithium iron phosphate storage battery group is detached from DC bus and is in standing
State, if direct-current supervision device judges that lithium iron phosphate storage battery group needs charging to be closed D.C. contactor, battery is directly simultaneously
It connects on bus, charger gives DC load and storage battery power supply simultaneously.
When the charger on DC bus is without output, due to reversal connection diode forward conducting, battery can be free of discontinuities
Ground is to DC bus powered, to will not influence the reliability of direct current system.
In the present embodiment, the diode is using the heavy-duty diode being reversely connected, to ensure that discharge loop is led always
It is logical, support electric discharge (nanosecond) free of discontinuities.
Preferably, in the present embodiment, when needed, control by-pass switch closure is switched to when by-pass switch closure
Direct connection circuit.
Preferably, the BMS system in lithium iron phosphate storage battery group in the present embodiment be capable of real-time monitoring battery voltage,
The parameters such as electric current, internal resistance, temperature, SOC adjust the time accounting of discontinuous floating charging, to be most suitable for battery operation.Wherein,
The direct-current supervision device does not need to be particularly limited to model using existing product on the market.
It is noted that the utility model protection is hardware configuration, it is not claimed as control method.Above only
For a preferable embodiment in the utility model embodiment.But the utility model is not limited to the embodiment above, it is all
Any equivalent change and modification done by the utility model, range of the generated function without departing from this programme
When, belong to the protection scope of the utility model.
Claims (2)
1. a kind of lithium iron phosphate storage battery discontinuity float charger, including the direct-current supervision device, female with direct current in direct current system
The charger that line is electrical connected, it is characterised in that: further include disconnect switch, contactor, diode, lithium iron phosphate storage battery group,
And by-pass switch；
The positive terminals of the disconnect switch are respectively connected to one end of contactor, the cathode of diode and by-pass switch
One end, the negative terminals of the disconnect switch are connected to the cathode of lithium iron phosphate storage battery group, the anode of the diode, contact
The other end of the other end of device, the anode of lithium iron phosphate storage battery group and by-pass switch is connected；The contactor is by described straight
Monitor for flowing control, the by-pass switch are being in an off state under normal conditions, and the disconnect switch is connected with DC bus, described
Lithium iron phosphate storage battery group is equipped with BMS system, which is connected with direct-current supervision device communication.
2. a kind of lithium iron phosphate storage battery discontinuity float charger according to claim 1, it is characterised in that: described two
Pole pipe uses heavy-duty diode, to ensure that discharge loop is connected always.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920723822.0U CN209658969U (en) | 2019-05-20 | 2019-05-20 | A kind of lithium iron phosphate storage battery discontinuity float charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920723822.0U CN209658969U (en) | 2019-05-20 | 2019-05-20 | A kind of lithium iron phosphate storage battery discontinuity float charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209658969U true CN209658969U (en) | 2019-11-19 |
Family
ID=68530402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920723822.0U Active CN209658969U (en) | 2019-05-20 | 2019-05-20 | A kind of lithium iron phosphate storage battery discontinuity float charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209658969U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110021984A (en) * | 2019-05-20 | 2019-07-16 | 国网福建省电力有限公司宁德供电公司 | A kind of lithium iron phosphate storage battery discontinuity floating charge method for electrically |
-
2019
- 2019-05-20 CN CN201920723822.0U patent/CN209658969U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110021984A (en) * | 2019-05-20 | 2019-07-16 | 国网福建省电力有限公司宁德供电公司 | A kind of lithium iron phosphate storage battery discontinuity floating charge method for electrically |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102545291B (en) | Solar power storage system and solar power supply system | |
| CN204012789U (en) | Vehicle-mounted monitoring platform power administration module | |
| CN201985554U (en) | Active self-management charging device for lithium ion power battery | |
| CN201750183U (en) | Charge protection device of lithium iron phosphate battery for communication base station | |
| CN110011408B (en) | Mobile emergency power supply system and working method thereof | |
| CN106300514A (en) | Electric automobile fast charging and discharging system, method and electric automobile | |
| CN203339769U (en) | Online energy storage power supply for photovoltaic and mains supply complementary input | |
| CN104410139A (en) | Automatic power-off circuit and automatic power-off device for full storage battery of storage battery car | |
| JP2017220993A (en) | Trickle charging power supply system | |
| CN208570836U (en) | Under peak load shifting operating condition in communication base station multiple groups battery charge-discharge control system | |
| CN203071637U (en) | DC power supply connection control apparatus | |
| CN104882936B (en) | Communication energy storage power supply system | |
| CN103915875A (en) | Lithium battery charging and discharging control system for novel solar street lamp | |
| CN209658969U (en) | A kind of lithium iron phosphate storage battery discontinuity float charger | |
| CN110854954A (en) | Intelligent scheduling system and scheduling method for battery cluster of energy storage system | |
| CN103532480A (en) | Power device of high-voltage direct current power transmission line fault monitoring terminal | |
| CN103368235B (en) | Nickel-metal hydride battery charge-discharge circuit in uninterruptible power supply | |
| CN112087017A (en) | Transformer substation direct-current power supply battery management system and battery management method thereof | |
| CN111092471A (en) | Use method of overcharge and overdischarge protection circuit for energy storage battery pack | |
| CN203326628U (en) | Intelligent management system of cell | |
| CN203339768U (en) | Backup energy storage power supply for photovoltaic and mains supply complementary input | |
| CN205141783U (en) | Novel vehicle -mounted storage battery is with digital power | |
| CN106300632B (en) | DC uninterrupted remote electric power system | |
| CN106300461A (en) | A kind of ups system of intelligent management battery | |
| CN201699253U (en) | Power supply seat with intelligent charging function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |