CN209016935U - Two-way full-bridge DC/DC converter topology based on lithium battery energy storage battery system - Google Patents
Two-way full-bridge DC/DC converter topology based on lithium battery energy storage battery system Download PDFInfo
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- CN209016935U CN209016935U CN201821457246.1U CN201821457246U CN209016935U CN 209016935 U CN209016935 U CN 209016935U CN 201821457246 U CN201821457246 U CN 201821457246U CN 209016935 U CN209016935 U CN 209016935U
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a kind of two-way full-bridge DC/DC converter topology based on lithium battery energy storage battery system, including the first EMI filter module, two-way full-bridge DC/DC converter, the 2nd EMI filter module, voltage detection module, current detection module and main control module, the two-way full-bridge DC/DC converter includes the first rectification module, transformer and the second rectification module, effect of the utility model based on lithium battery mould group in the two-way full-bridge DC/DC converter of lithium electricity energy-storage system is to complete charge and discharge during to and fro flow of power, to realize the storage and release of electric energy；Two-way full-bridge DC/DC converter mainly realizes the accurate adjusting of the wide scope of energy-storage units port voltage；Two-way full-bridge DC/DC converter realizes that entire power inverter can be worked in the case where the voltage of two-way full-bridge DC/DC converter is adjusted in efficiency optimization state, while central processing unit will also be realized by the voltage and current signal of real-time detection and carry out real-time control to two-way full-bridge DC/DC converter.
Description
Technical field
The utility model belongs to energy storage technology and power electronics field, more particularly to a kind of based on lithium battery energy storage battery system
The two-way full-bridge DC/DC converter topology of system.
Background technique
Lithium battery energy storage battery system (Lithium battery energy storage system) is used as a kind of realization energy
The energy-storage system of fast storage, release and to and fro flow of power has the advantages that more prominent relative to other energy-storage systems:
Energy storage efficiency height, power density height, fast response time, service life cycle are long.The energy-storage system be widely used in modern industry,
The fields such as defence and military, aerospace improve power quality, realize energy storage to electrical energy demands smooth, that buffering is unstable
It has a very important role.
The end voltage change range of lithium battery energy storage battery system lithium battery energy storage battery unit during energy stores, release compared with
Width, in order to meet loading demand and improve the utilization rate of lithium battery storage energy, lithium battery energy storage battery unit usually configures power change
Parallel operation.There is two processes of energy stores and release, therefore the power of system configuration during the work time in lithium battery energy storage battery system
Converter need to be using the two-way full-bridge DC/DC converter that can be realized to and fro flow of power.Two-way full-bridge DC/DC converter is main
It realizes the functions such as charging and discharging lithium battery control, power regulation and control, meets loading demand in the form of to and fro flow of power
With raising energy storage utilization rate.
Two-way full-bridge DC/DC converter is the core that power is converted in lithium battery energy storage battery system.Two-way full-bridge DC/DC
The difference of converter topology structure will directly affect lithium battery energy storage battery system capacity transfer efficiency, and power inverter is reasonably topological
Structure and good circuit performance are conducive to energy-storage system and improve energy storage transfer efficiency, reduce system bulk, weight, reduce system
System cost, so that the high-efficiency comprehensive utilization of the energy is better achieved, the guarantee of the optimization of energy resource structure and energy security supply.
Utility model content
The shortcomings that the utility model is directed in the prior art, provide a kind of two-way full-bridge based on lithium battery energy storage battery system
DC/DC converter topology.
In order to solve the above-mentioned technical problem, the utility model is addressed by following technical proposals:
A kind of two-way full-bridge DC/DC converter topology based on lithium battery energy storage battery system, including the first EMI filter module,
Two-way full-bridge DC/DC converter, the 2nd EMI filter module, voltage detection module, current detection module and main control module, institute
Stating two-way full-bridge DC/DC converter includes the first rectification module, transformer and the second rectification module；
The output end of the input terminal connection energy accumulation current converter of the first EMI filter module, the first EMI filter module
Output end connect the first rectification module input terminal, first rectification module output end connection transformer one end, institute
The other end for stating transformer connects the input terminal of the second rectification module, and the output end of second rectification module connects the 2nd EMI
The input terminal of filter module, the output end of the 2nd EMI filter module connect current detection module, the 2nd EMI filtering
Module connects external impressed current detection plate, and the external impressed current detection plate connects the side BAT DC bus port；
First rectification module, transformer and the second rectification module are separately connected voltage detection module, and described first is whole
Flow module, transformer, the second rectification module and external impressed current detection plate are separately connected current detection module, the voltage detecting mould
Block and the current detection module are separately connected main control module, and the main control module is separately connected the first rectification module, becomes
Depressor and the second rectification module, the current signal that the current detection module will test are fed back in the main control module,
The voltage signal that the voltage detection module will test is fed back in the main control module.
As an embodiment, the main control module connects power inverter, and the main control module control is double
The PWM of switching tube into DC/DC.
As an embodiment, the 2nd EMI filter module is the side BAT EMI circuit.
As an embodiment, the main control module is central processing unit.
The utility model is due to using above technical scheme, with significant technical effect:
Effect of the utility model based on lithium battery mould group in the two-way full-bridge DC/DC converter of lithium electricity energy-storage system be
Charge and discharge are completed during to and fro flow of power, to realize the storage and release of electric energy；Two-way full-bridge DC/DC converter is mainly real
The accurate adjusting of the wide scope of existing energy-storage units port voltage；Two-way full-bridge DC/DC converter realizes that entire power inverter exists
The voltage of two-way full-bridge DC/DC converter can work under adjusting in efficiency optimization state.Central processing unit will also lead to simultaneously
The voltage and current signal for crossing real-time detection, which is realized, carries out real-time control to two-way full-bridge DC/DC converter.
The utility model is characterized in that: using for reference the newest fruits of switch power technology and double in lithium battery energy storage battery system
The topological structure present to full-bridge DC/DC converter, after the accurate adjusting and lithium electricity mould group charge and discharge to meet output voltage
The requirement of voltage wide range variation is held, while pursuing the high efficiency and high power density of system.The advantages of this scheme is implemented exists
In: the isolation level of the converter has selected two-way full-bridge full-bridge DC/DC converter.The system power converter is in full-load range
Interior realization Sofe Switch substantially reduces circuit switch loss, improves the working efficiency and power density of converter, and converter is opened up
It is simple to flutter structure, implements convenient for control.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the two-way full-bridge DC/DC converter topology described in the utility model based on lithium battery mould group energy-storage system
Structure chart；
Circuit topological structure figure when Fig. 2 is two-way full-bridge DC/DC converter positive charge described in the utility model；
Circuit topological structure figure when Fig. 3 is two-way full-bridge DC/DC converter back discharge described in the utility model.
Label declaration in attached drawing: 1, high voltage dc bus port；2, the first EMI filter module；3, the first rectification module；
4, transformer；5, the second rectification module；6, the 2nd EMI filter module；7, external impressed current sampling plate；8, the side BAT DC bus end
Mouth, 9, voltage detection module；10, current detection module；11, main control module.
Specific embodiment
The utility model is described in further detail below with reference to embodiment, following embodiment is to the utility model
Explanation and the utility model is not limited to following embodiment.
Exemplary structure: a kind of two-way full-bridge DC/DC converter topology based on lithium battery energy storage battery system, including first
EMI filter module 2, two-way full-bridge DC/DC converter, the 2nd EMI filter module 6, voltage detection module 9, current detection module
10 and main control module 11, the two-way full-bridge DC/DC converter includes the first rectification module 3, transformer 4 and the second rectification mould
Block 5；The input terminal of the first EMI filter module 2 connects high voltage dc bus port 1, the first EMI filter module 2
Output end connects the input terminal of the first rectification module 3, one end of the output end connection transformer 4 of first rectification module 3, institute
The other end for stating transformer 4 connects the input terminal of the second rectification module 5, the output end connection second of second rectification module 5
The input terminal of EMI filter module 6, the output end connection current detection module 10 of the 2nd EMI filter module 6, described second
EMI filter module 6 connects external impressed current sampling plate 7 and reconnects the side BAT DC bus port 8；First rectification module 3 becomes
Depressor 4 and the second rectification module 5 are separately connected voltage detection module 9, first rectification module 3, transformer 4 and the second rectification
Module 5 is separately connected current detection module 10, and external impressed current sampling plate 7 connects the current detection module 9, the voltage detecting
Module 9 and the current detection module 10 are separately connected main control module 11, and it is whole that the main control module 11 is separately connected first
Flow module 3, transformer 4 and the second rectification module 5, the current signal that the current detection module 10 will test feed back to described
In main control module 11, the voltage signal that the voltage detection module 9 will test is fed back in the main control module 11.
The main control module 11 connects power inverter, and the main control module 11 controls switching tube in changed power device
PWM.The 2nd EMI filter module 6 is the side BAT EMI circuit, and the main control module 11 is central processing unit.
Embodiment 1:
As shown in Figure 1, the hardware circuit specific embodiment of the utility model is as follows:
A kind of two-way full-bridge DC/DC converter topology based on lithium battery energy storage battery system of the utility model is preferably implemented
Scheme includes the first EMI filter module 2, two-way full-bridge DC/DC converter, the 2nd EMI filter module 6, the side BAT DC bus end
Mouthfuls 8, voltage detection module 9, current detection module 10 and main control module 11, the two-way full-bridge DC/DC converter include the
One rectification module 3, transformer 4 and the second rectification module 5；Wherein, the output port HVDC of HV PCS and two-way full-bridge DC/DC becomes
The first EMI filter module 2 of parallel operation input terminal is connected, and the output end of the first EMI filter module 2 connects the defeated of the first rectification module 3
Enter end, the input terminal of the output end connection transformer 4 of the first rectification module 3, the output end of transformer 4 connects the second rectification module
5 input terminal, the output end of the second rectification module 5 connect the side BAT EMI plate, connect current detection module on the right side of the EMI plate of the side BAT
10, the external lithium battery energy storage battery unit in DC bus-bar voltage port；To two-way full-bridge DC/DC converter and by the first rectification module 3,
The two-way full-bridge DC/DC converter of transformer 4 and the second rectification module 5 composition carries out voltage detecting, current detecting respectively, obtains
Voltage signal, current signal is counter is fed to central processing unit, the signal provided is used to real-time control.Specifically, electric
Pressure detection, current detecting are separately connected two-way full-bridge DC/DC converter, and voltage, electric current are carried out real-time monitoring, and fed back to
Central Processing Unit is realized and is controlled the PWM for controlling each power switch tube in two-way full-bridge DC/DC converter.
Example two:
As shown in Fig. 2, specific embodiment of the utility model under the conditions of power forward flow is as follows:
In the better embodiment of the utility model, lithium battery energy storage battery in the two-way full-bridge DC/DC converter of utility model
Effect is lithium battery electric discharge in unit, and providing power for two-way full-bridge DC/DC converter is 12.8KW, voltage change range 57
The unstable DC power supply of~73V, later, DC voltage source flow into switching network/commutated network, are determined by 4 turn ratio of transformer
The pressure ratio example constituted is gone up and down, after the adjusting of two-way full-bridge DC/DC converter voltage, acquisition power is 12.8KW, and range is
The DC power supply of (700~800V) flows out, and provides constant DC voltage for DC bus-bar voltage port；
Specific embodiment is illustrated in conjunction with Fig. 1, Fig. 2:
As shown in Figure 1, lithium battery energy storage battery cell discharge, provide power rating unstable DC voltage source V1 be input to it is double
Into full-bridge DC/DC converter figure, two-way full-bridge DC/DC converter work passes through switching and rectifying network and 4 liters of transformer again
Pressure, obtain power rating stabilizes the output voltage source V2；Last voltage source V2 is via the external application system in DC bus-bar voltage port
System；The specific power flow direction difference of two-way full-bridge DC/DC converter is as shown in Figure 2.Two-way full-bridge DC/DC converter is in voltage tune
The voltage conversion of power supply is completed during section.The effect of voltage, current detecting is modules in two-way full-bridge DC/DC converter
Voltage, electric current be measured in real time, provide live signal for central processing unit；PWM wave is generated by central processing unit
It controls each power switch tube in two-way full-bridge DC/DC converter, adjusts two-way full-bridge DC/DC inverter power to reach
Purpose.
Embodiment 3:
As shown in figure 3, specific embodiment of the utility model under the conditions of power reverse flow is as follows:
In the better embodiment of the utility model, the high voltage dc bus port of the utility model obtains power from external
For 12.8KW, voltage is the DC voltage source of 750~850V, is flowed by the first rectification module 3, transformer 4 and the second rectification mould
The two-way full-bridge DC/DC converter that block 5 is constituted, it is 12.8KW that power is obtained after overvoltage is adjusted, this voltage is lithium battery storage
The DC voltage source of lithium battery charging voltage in energy unit, the voltage source fills lithium battery in lithium battery energy storage battery unit later
Electricity, until lithium battery energy storage battery unit side voltage reaches rated value 73V, charging complete.
Specific embodiment is illustrated in conjunction with Fig. 1, Fig. 3:
As shown in Figure 1, DC voltage source is accessed in high voltage dc bus port, realized after two-way full-bridge DC/DC converter
Voltage is adjusted, and obtains the direct-flow voltage regulation source Vdc of rated power, accesses lithium battery energy storage battery finally by the side BAT DC bus port
Unit charges, until the voltage of lithium battery energy storage battery unit reaches rated value, then to the lithium battery in lithium battery energy storage battery unit
The specific power flow direction difference of charging complete, two-way full-bridge DC/DC converter is as shown in Figure 3.Two-way full-bridge DC/DC converter exists
The conversion of the voltage of power supply is completed in voltage adjustment process.Mistake of the entire two-way full-bridge DC/DC converter in specific implementation at this time
Voltage, the control of electric current are identical with voltage, the control working principle of electric current in examples detailed above two in journey.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different.All equivalent or simple changes done according to structure, feature and principle described in the concept of the patent of the utility model,
It is included in the protection scope of the utility model patent.Those skilled in the art of the present invention can be to being retouched
The specific embodiment stated does various modifications or additions or is substituted in a similar manner, without departing from the utility model
Structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (4)
1. a kind of two-way full-bridge DC/DC converter topology based on lithium battery energy storage battery system, which is characterized in that including the first EMI
Filter module, two-way full-bridge DC/DC converter, the 2nd EMI filter module, voltage detection module, current detection module and master control
Molding block, the two-way full-bridge DC/DC converter include the first rectification module, transformer and the second rectification module；
The first EMI filter module input terminal connection energy accumulation current converter output end, the first EMI filter module it is defeated
Outlet connects the input terminal of the first rectification module, one end of the output end connection transformer of first rectification module, the change
The other end of depressor connects the input terminal of the second rectification module, and the output end of second rectification module connects the 2nd EMI filtering
The output end of the input terminal of module, the 2nd EMI filter module connects current detection module, the 2nd EMI filter module
External impressed current detection plate is connected, the external impressed current detection plate connects the side BAT DC bus port；
First rectification module, transformer and the second rectification module are separately connected voltage detection module, the first rectification mould
Block, transformer, the second rectification module and external impressed current detection plate are separately connected current detection module, the voltage detection module and
The current detection module is separately connected main control module, and the main control module is separately connected the first rectification module, transformer
With the second rectification module, the current signal that the current detection module will test is fed back in the main control module, described
The voltage signal that voltage detection module will test is fed back in the main control module.
2. the two-way full-bridge DC/DC converter topology according to claim 1 based on lithium battery energy storage battery system, feature exist
In the main control module connects power inverter, and the main control module controls each function in two-way full-bridge DC/DC converter
The PWM of rate switching tube.
3. the two-way full-bridge DC/DC converter topology according to claim 1 based on lithium battery energy storage battery system, feature exist
In the 2nd EMI filter module is the side BAT EMI circuit.
4. the two-way full-bridge DC/DC converter topology according to claim 1 based on lithium battery energy storage battery system, feature exist
In the main control module is central processing unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821457246.1U CN209016935U (en) | 2018-09-06 | 2018-09-06 | Two-way full-bridge DC/DC converter topology based on lithium battery energy storage battery system |
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| CN201821457246.1U CN209016935U (en) | 2018-09-06 | 2018-09-06 | Two-way full-bridge DC/DC converter topology based on lithium battery energy storage battery system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376529A (en) * | 2019-07-31 | 2019-10-25 | 苍南县磊铭电动车有限公司 | Energy-storing multifunctional lithium battery detection system |
| CN113472054A (en) * | 2021-06-25 | 2021-10-01 | 中国电子科技集团公司第十八研究所 | Isolated form satellite power supply controller |
| CN114679068A (en) * | 2022-05-30 | 2022-06-28 | 深圳戴普森新能源技术有限公司 | Bidirectional DCDC converter for converting electric energy of energy storage converter and energy storage system |
-
2018
- 2018-09-06 CN CN201821457246.1U patent/CN209016935U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376529A (en) * | 2019-07-31 | 2019-10-25 | 苍南县磊铭电动车有限公司 | Energy-storing multifunctional lithium battery detection system |
| CN110376529B (en) * | 2019-07-31 | 2022-09-27 | 浙江磊铭新能源科技有限公司 | Energy storage type multifunctional lithium battery detection system |
| CN113472054A (en) * | 2021-06-25 | 2021-10-01 | 中国电子科技集团公司第十八研究所 | Isolated form satellite power supply controller |
| CN114679068A (en) * | 2022-05-30 | 2022-06-28 | 深圳戴普森新能源技术有限公司 | Bidirectional DCDC converter for converting electric energy of energy storage converter and energy storage system |
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