CN207134804U - A kind of tandem type energy storage converter device utilized based on different battery modules differentiation - Google Patents

A kind of tandem type energy storage converter device utilized based on different battery modules differentiation Download PDF

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Publication number
CN207134804U
CN207134804U CN201721134342.8U CN201721134342U CN207134804U CN 207134804 U CN207134804 U CN 207134804U CN 201721134342 U CN201721134342 U CN 201721134342U CN 207134804 U CN207134804 U CN 207134804U
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energy storage
battery pack
battery
current transforming
transforming unit
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邵长宏
曾庆臣
孟繁兴
李萌
许烈
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Friends Of Acer New Energy (xuzhou) Co Ltd
Beijing Youxin Hongke Electronic Polytron Technologies Inc
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Friends Of Acer New Energy (xuzhou) Co Ltd
Beijing Youxin Hongke Electronic Polytron Technologies Inc
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Abstract

The utility model discloses a kind of tandem type energy storage converter device utilized based on different battery modules differentiation, including:Three-phase cascade multilevel inverter, grid-connected reactor, and master controller.The three-phase cascade multilevel inverter is Y-connection, per an energy storage unsteady flow sequence is mutually used as, includes the energy storage current transforming unit of several cascades.Each energy storage current transforming unit includes:H-bridge unit, battery pack, the doube bridge power conversion DC/DC of the H-bridge unit and battery pack is connected, the battery management system (BMS) of balancing energy control is carried out to the battery pack, and gather battery parameter, the sub-control circuit of driving H-bridge unit action.The cascade of energy storage current transforming unit is realized by the cascade of H-bridge unit.The module voltage that battery is in series is reduced to 36 80V by the utility model, is reduced Individual cells in battery modules and is damaged, the wooden pail effect that system can not work;The topological structure is advantageous to use low-pressure high-power device, reduces system cost.

Description

A kind of tandem type energy storage converter device utilized based on different battery modules differentiation
Technical field
The application belongs to Technics of Power Electronic Conversion technical field, is related to a kind of power electronic equipment, more particularly to one kind is based on The tandem type energy storage converter device that different battery modules differentiation utilize.
Background technology
New energy (electronic) automobile is great turn based on actuation techniques as one of great strategy new industry of China seven Type, it is to be directed to energy security, sustainable development and the important breakthrough mouth with industrial structure upgrading problem, therefore, greatly develops electronic Automobile has important strategic importance to China.With the popularization of new-energy automobile, the retired problem of electrokinetic cell is also progressively convex It is aobvious.A usual New-energy electric vehicle, its battery cost account for nearly the 1/2 of totle drilling cost ratio.In general, electrokinetic cell Capacity cannot be again with new-energy automobile less than 80%.A lot (new-energy automobile) business to consumer promise to undertake now Battery was preferably at most 10 years, but if it is considered that the comprehensive condition such as use environment, the average longevity of electrokinetic cell Life namely 5 years.Current driving force battery recycling mainly has two paths, first, simply capacity decline can not for not scrapping The battery being continuing with by electric automobile, echelon utilization is carried out, allows it to be brought extra power into play in other field (such as electric power storage);Two It is that the electrokinetic cell scrapped is disassembled, reclaimed.
The research that is utilized about electrokinetic cell echelon all is being actively developed in global range at present, as Germany, the U.S., Japan It is more early due to starting to walk Deng country, nowadays there are many successfully demonstration project and items in commerce, be largely with energy storage two Based on secondary utilization.Energy storage technology is solution power supply chain (fuel, generating, transmission of electricity, distribution and electricity consumption) existing issue, realizes electricity Net sustainable development provides brand-new approach.Using extensive power energy storage technology, can effectively alleviate electricity consumption imbalance between supply and demand, Improve power grid security and stability, improve power supply quality, and the utilization and development of regenerative resource can be promoted.Current transformer is energy storage An important step in system, the effect of core cell is served as in whole energy-storage system.Converter system platform directly closes It is accuracy, reliability and the corresponding speed of whole energy-storage system.
In traditional scheme, more by the way of the series connection of a large amount of batteries, prior art one as shown in Figure 1, is one The existing energy accumulation current converter of kind, use 196 monomer voltages to be connected for 3.2V ferric phosphate lithium cell, realize energy storage and supplied for power network Electricity.The specified busbar voltage of the energy accumulation current converter is 627.2V, and electric discharge the lowest point busbar voltage is 588V, using 12-16 blocks BMS (Battery Management System) board is controlled management.
The problem of larger be present in such scheme one, due to using cascaded structure, requiring higher to battery with two side terminals, being Meet the needs of grid-connected, nearly 200 batteries series connection is employed in scheme one.And in use, groups of circulation of connecting Life-span is limited by the cycle life of worst monomer in battery pack, that is, " wooden pail effect " be present, and worst monomer determines system Performance.
Prior art two as shown in Figure 2, Application No. CN201610245058.1, it is proposed that one kind contains full-bridge DC/DC combination tandem type energy accumulation current converter structure, it is made up of identical three-phase circuit, and each circuitry phase includes n full-bridge DC/DC current transformers and n corresponding H bridge DC/AC current transformer.The input of kth full-bridge DC/DC current transformers is connected outside k-th Portion's power supply, output of the input from kth full-bridge DC/DC current transformers of k-th of H bridge DC/AC current transformer, its output include the first He Second output end.First output end of the first H bridge DC/AC current transformers is through the first output inductor device as the circuitry phase First output end;Second output end of n-th of H bridge DC/AC current transformer is used as the circuitry phase after the second output inductor device The second output end;As 1≤k < n, the second output end and+1 H bridge DC/AC unsteady flow of kth of k-th of H bridge DC/AC current transformer First output end of device is connected, and wherein k, n are natural number, and 1≤k≤n, the first output end of each circuitry phase and second export Hold the output as the circuitry phase.The isolated form full-bridge DC/DC current transformers of the program can work under higher switching frequency, can The volume and cost of isolating transformer are greatly reduced, by the cascade system of multiple H bridges, device can be made to be directly accessed high-tension electricity Net (10kV or 35kV).
High pressure technique scheme is used in scheme two, it is still desirable to which a large amount of batteries of connecting, high frequency transformer has functioned only as will Battery is isolated with high pressure 10kV's, and system architecture is complicated.Do not study and how to be filled when each battery modules characteristic is inconsistent Divide and utilize circuit structure characteristic, battery differentiation is stored, differentiation electric discharge;Do not mention and the compatibility of all kinds of batteries is asked yet Topic.
Prior art three, Application No. CN201320177685.8, it is proposed that a kind of bidirectional energy-storage current transformer, including One three-phase cascade multilevel inverter and several isolation type bidirectional DC/DC converters, the isolation type bidirectional DC/DC conversion The number of device is identical with the number of H bridges in three-phase cascade multilevel inverter, and DC/DC converters are corresponded with H bridges and connected Connect, specific annexation is:The direct-flow input end of each isolation type bidirectional DC/DC converters is all connected with battery, and direct current Output end connects the direct-flow input end of corresponding H bridges, and the ac output end of the three-phase cascade multilevel inverter connects Enter power network.This structure is applied to low-voltage, high-current discharge and recharge occasion, is greatly improved the efficiency of current transformer, while reduce current transformer Volume.
In scheme three, battery modules are not separated, have been used uniformly a cell voltage.Can not solve battery modules Differentiation stores, and differentiation electric discharge, is not also solved to the compatibility issue of all kinds of batteries.
Utility model content
To solve technical problem present in prior art, the utility model provides one kind and is based on different battery modules differences Change the tandem type energy storage converter device utilized.
The energy storage converter device includes:Three-phase cascade multilevel inverter and master controller;The three-phase tandem type Multi-electrical level inverter is Y-connection, and ac output end accesses power network;Per being mutually an energy storage unsteady flow sequence, including several levels The energy storage current transforming unit of connection;Each energy storage current transforming unit includes:H-bridge unit, battery pack, connect the H-bridge unit and battery pack Doube bridge power conversion DC/DC, to the battery pack carry out balancing energy control battery management system, and collection energy storage unsteady flow State parameter, the sub-control circuit of driving H-bridge unit action of unit;The level for being cascaded as each H-bridge unit of each energy storage current transforming unit Connection;The state parameter of energy storage current transforming unit is sent to master controller by each sub-control circuit, and master controller is according to the state received Parameter, the charging/discharging voltage of each energy storage current transforming unit is adjusted, so as to control the charge-discharge energy of the Battery pack.
Alternatively, each battery pack includes the N number of battery being cascaded, and N is the integer more than 1;The battery Management system is connected with the battery in the battery pack respectively.
Alternatively, the state parameter of sub-control circuit collection energy storage current transforming unit, specifically include collection battery pack and The sub-control circuit state parameter of itself, and it is uploaded to master controller;And the pulse width modulation (PWM) issued according to master controller accounts for Sky is exported to H-bridge unit after being handled than information PWM to drive the H-bridge unit to act, so as to control energy storage current transforming unit Working condition and working condition under operating time.
Alternatively, in addition to grid-connected reactor, the ac output end of the three-phase cascade multilevel inverter pass through simultaneously Net reactor accesses power network.
Alternatively, the H-bridge unit uses low-pressure high-power device.
Alternatively, the low-pressure high-power device is MOSFET element.
Alternatively, the H-bridge unit forms bypass structure according to master controller signal or sub-control circuit signal.
Alternatively, the state parameter includes:The voltage of battery pack, the capacity of battery pack and temperature parameter.
Alternatively, the state parameter also includes:The voltage of each battery, temperature, charging and discharging currents, battery pack in battery pack With state-of-charge (SOC) parameter of each battery in battery pack.
Alternatively, in same phase energy storage unsteady flow sequence, it is at different levels in battery pack type it is identical or different;Different phase energy storage become Flow in sequence, the battery modules of identical voltage are used in the energy storage current transforming unit with one-level.
Alternatively, different type battery pack is the inhomogeneities such as ferric phosphate lithium cell group, ternary lithium battery group, lead-acid battery group Type lithium electricity and lead-acid battery.
Alternatively, in the battery pack, the module voltage being in series is 36-80V.
Alternatively, the battery pack can realize all or part of replacing using modularization, demountable structure.
Alternatively, the state parameter that master controller uploads according to each sub-control circuit, obtain each in each energy storage unsteady flow sequence The electricity and/or voltage of energy storage current transforming unit;And according to the electricity and/or voltage of each energy storage current transforming unit in energy storage unsteady flow sequence Information, with reference to grid-connected feed demand, calculate the PWM duty cycle of each energy storage current transforming unit and be handed down to each energy storage current transforming unit respectively Sub-control circuit.
Alternatively, the interface of the energy storage converter device and power network uses external interface module, the external interface module Structure disclosure satisfy that and power network and electrical equipment timesharing are electrically connected.
The differentiation storage of the main controller controls energy, differentiation electric discharge;Battery modularized management is realized, improves storage Can system to the compatibility of battery, master controller sends control terminal phase of the pwm signal directly or by iversion controller and each H bridges Even, the control signal sent according to master controller, the charging/discharging voltage of each energy-storage units is adjusted.Detecting itself work Be not in good state but still in license working condition in the range of when, to all sub-control circuits control issue the bad report of working condition Alert information, or detect sub-control circuit or energy storage current transforming unit working condition it is bad but still in license working condition in the range of When, issue the bad warning message of working condition to the control of corresponding sub-control circuit.The corresponding sub-control circuitry cuts event of instruction The energy storage current transforming unit output of barrier, it is a kind of specifically to control implementation to be arrived for master controller output control signal through sub-control circuit Up to the control terminal of corresponding H bridges, make corresponding triode ON and cut-off, bypass or lower bypass in formation.
The device that the utility model embodiment provides, 36-80V is reduced to by the module voltage that battery is in series, and is reduced Individual cells damage, wooden pail effect that system can not work in battery modules;The topological structure is advantageous to use the big work(of low pressure Rate device, reduce system cost.
Control system by each battery modules with normal voltage carry out standardization, system according to output voltage requirement and The virtual voltage of each battery modules detected, with " purging to treat the excess syndrome and the principle of tonifying for the deficiency ", by the way that each battery is calculated H bridges working method corresponding to module, the voltage needed for output is reached after group.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of application.
Fig. 1 is a kind of circuit topology figure of the energy accumulation current converter of cascaded structure of the prior art;
Fig. 2 is a kind of circuit topology figure of high pressure technique scheme of the prior art;
Fig. 3 is the tandem type energy storage converter device utilized based on different battery modules differentiation according to the embodiment of the present application A kind of example circuit topology figure;
Fig. 4 is the bypass structure schematic diagram of the energy storage converter device according to the embodiment of the present application.
Embodiment
To enable the purpose of this utility model, feature, advantage more obvious and understandable, below in conjunction with the application Accompanying drawing in embodiment, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described reality It is only some embodiments of the present application to apply example, and not all embodiments.Based on the embodiment in the application, people in the art The every other embodiment that member is obtained under the premise of creative work is not made, belong to the scope of the application protection.
In addition, in each embodiment of the application, the connection of circuit or device or connected, both include being directly connected to, also include It is indirectly connected with by what conventional meanses were realized, these conventional meanses include but is not limited to for holding signal, voltage and/or electric current The custom circuit problems such as stabilization, impedance matching, Electro Magnetic Compatibility consider to adopt increased transition connector part or module;Both included Wired connection, also including in prior art usual manner wireless connection (such as detection or control signal transmission connection, some Charging of low-power wireless equipment etc.);Both include connection, also connected including feasible IC interior.
Fig. 3 is the tandem type energy storage converter device utilized based on different battery modules differentiation according to the embodiment of the present application A kind of circuit topology figure of example.
The energy storage converter device includes:Three-phase cascade multilevel inverter, grid-connected reactor, and master controller.
The three-phase cascade multilevel inverter is Y-connection, and an energy storage unsteady flow sequence is used as per phase, if including The energy storage current transforming unit of dry cascade.Each energy storage current transforming unit includes:H-bridge unit, the input power as the H-bridge unit Battery pack, connect the doube bridge power conversion DC/DC of the H-bridge unit and battery pack, respectively with the battery in the battery pack Connection, the battery management system (BMS) that balancing energy control is carried out to the battery pack, and collection battery parameter, driving H bridges The sub-control circuit of unit action.Each battery pack includes the N number of battery being cascaded, and N is the integer more than 1.It is described Sub-control circuit, gathers the voltage of battery pack, the capacity of battery pack and temperature parameter, the voltage of each battery, temperature in battery pack, fills The SOC parameter of each battery in discharge current parameter, battery pack and battery pack, and electric current, voltage and the temperature of sub-control circuit itself Parameter is spent, and is uploaded to master controller;And the pulse width modulation (PWM) duty cycle information issued according to master controller is entered to PWM Exported after row processing to H-bridge unit to drive the H-bridge unit to act, so as to control the working condition of energy storage current transforming unit and work Make the operating time under state.The cascade of energy storage current transforming unit is realized by the cascade of H-bridge unit.The three-phase tandem type is more The ac output end of electrical level inverter accesses power network by grid-connected reactor.
Master controller, for controlling the differentiation of energy to store, differentiation electric discharge.The master controller, respectively with each point Circuit communication connection is controlled, the PWM duty cycle of each energy management equipment is issued to the sub-control circuit of each energy storage current transforming unit.Specific side Formula is the parameter information that master controller uploads according to each sub-control circuit, is obtained in each output facies-suite (energy storage unsteady flow sequence) The electricity and/or voltage of each energy storage current transforming unit;And according to the electricity and/or voltage of each energy storage current transforming unit in output facies-suite Information, with reference to grid-connected feed demand, calculate the PWM duty cycle of each energy storage current transforming unit and be handed down to each energy storage current transforming unit respectively Sub-control circuit;Can also detect itself, sub-control circuit or during energy storage current transforming unit failure, disengagement failure itself, point Circuit output is controlled, or the energy storage current transforming unit of the corresponding sub-control circuitry cuts failure of instruction is exported and sent to corresponding sub-control circuit Fault message, or detect itself working condition it is bad but still in license working condition in the range of when, to all sub-controls Circuit control issues the bad warning message of working condition, or is detecting sub-control circuit or energy storage current transforming unit working condition not It is good but still in license working condition in the range of when, to corresponding sub-control circuit control issue the bad warning message of working condition. The energy storage current transforming unit output of the corresponding sub-control circuitry cuts failure of instruction, it is master control that one kind, which specifically controls implementation, Device output control signal processed reaches the control terminal of corresponding H bridges through sub-control circuit, makes corresponding triode ON and cut-off, is formed other Road.
The master controller can realize battery modularized management, improve compatibility of the energy storage converter device to battery,
Fig. 4 is the bypass structure schematic diagram of the energy storage converter device according to the embodiment of the present application.Its principle is by H bridges What the break-make control of middle triode was realized.The first bypass form (bypass I) is by making two three, H bridges top in Fig. 4 Pole pipe turns on to form bypass, and second of bypass form (bypass II) is then to form the triode ON of H bridges bottom two in Fig. 4 Bypass.
The three-phase energy storage unsteady flow sequence of three-phase cascade multilevel inverter in Fig. 3 shares 3 energy storage unsteady flow sequences, often Individual sequence includes the H-bridge unit of multiple cascades.Certainly, energy storage unsteady flow sequence can also be 6 or 3M, M >=1.When for 6 When, energy storage unsteady flow sequence can be in parallel two-by-two;When for 3M when, energy storage unsteady flow sequence can M it is in parallel;Remain on three-phase output shape Formula.
Further, each energy storage current transforming unit cascade in same energy storage unsteady flow sequence, it is relatively high defeated to ensure to have Go out voltage, meet work requirements.In same energy storage unsteady flow sequence, it is at different levels in battery pack type or voltage can be with identical or not Together, in different energy storage sequences, the energy storage current transforming unit in same one-level, using identical battery pack type or the electricity of identical voltage Pond group, an energy storage unsteady flow group is formed, as shown in figure 3, the battery pack of first energy storage current transforming unit per phase is (lower to be referred to as first Level battery pack) it is identical battery pack, ferric phosphate lithium cell group is preferably all, the electricity of second energy storage current transforming unit per phase Pond group (lower to be referred to as second level battery pack) is identical battery pack, is preferably all ternary lithium battery group, the 3rd storage per phase The battery pack (lower to be referred to as third level battery pack) of energy current transforming unit is identical battery pack, and preferred battery group is lead-acid battery Group ... ..., it is by that analogy, at different levels to use different battery packs.Wherein each battery pack can carry out modularized design, with Battery pack is set to realize that integral replacing and part are changed.Using above-mentioned modular construction, energy-storage system is improved to the simultaneous of battery Capacitive, compatible most of different type, the battery or battery pack of different capabilities.
Specific work process is as follows:
For the tandem type energy storage converter device charging energy-storing utilized based on different battery modules differentiation, energy storage unsteady flow is filled Access power network is put, preferably at night or other low power consumptions, after alternating current is by grid-connected reactor, into H bridges, through doube bridge After power conversion DC/DC, battery pack charging process is realized, stops charging after energy storage converter device is full of, may also set up charging Time or manual control charge volume.
Energy storage converter device is fed to external electrical network, and master controller gathers the shape of each energy storage current transforming unit by sub-control circuit State parameter;The parameter information that master controller uploads according to each sub-control circuit, obtain each output facies-suite (energy storage unsteady flow sequence) In each energy storage current transforming unit electricity and/or voltage;And according to the electricity and/or electricity of each energy storage current transforming unit in output facies-suite Information is pressed, with reference to feed demand, the PWM duty cycle of each energy storage current transforming unit is calculated and is handed down to each energy storage current transforming unit respectively Each energy storage current transforming unit of sub-control circuit sub-control circuit drives in H-bridge unit action, so as to control each energy storage current transforming unit Operating voltage under working condition and working condition;Sub-control circuit when detecting energy storage current transforming unit failure, disengagement failure Energy storage current transforming unit exports and to master controller reporting fault information;Or detecting that energy storage current transforming unit working condition is bad But during still in the range of license working condition, the bad warning message of working condition is reported to main control;Or detecting Energy storage current transforming unit failure or working condition it is bad but still in license working condition in the range of and and not all energy storage unsteady flow list When member is in working condition, master controller using Bypass Control disengagement failure unit and starts superfluous directly or by sub-control circuit Remaining energy storage current transforming unit enters working condition.
Master controller, it is connected with three-phase cascade multilevel inverter, the parameter uploaded according to each energy storage current transforming unit is believed Breath, obtain the electricity and/or voltage of each energy storage current transforming unit in each output phase group;And according to each energy storage unsteady flow in output phase group The electricity and/or information of voltage of unit, with reference to the parameter information for intending power supply load or supply network, calculate each energy storage current transforming unit PWM duty cycle and be handed down to each sub-control circuit;And detect itself, PWM controller, system mode detector or energy storage During current transforming unit failure, disengagement failure itself, PWM controller, system mode detector or energy storage current transforming unit output;Or Detect energy storage current transforming unit failure or working condition it is bad but still in license working condition in the range of and and not all storage Can current transforming unit when being in working condition, entered by Bypass Control disengagement failure unit and the energy storage current transforming unit that starts redundancy Enter working condition.
Master controller reads the state parameter of each energy storage current transforming unit, including each energy storage unsteady flow by system mode detector The voltage of battery pack, the capacity of battery pack and temperature parameter and battery pack SOC parameter, also can further gather electricity in unit SOC parameter of each battery etc. in the voltage of each batteries of Chi Zuzhong, temperature, charging and discharging currents parameter and battery pack, each battery pack After electric energy is by doube bridge power conversion DC/DC, the H-bridge unit through being connected with DC/DC becomes alternating current, and alternating current passes through grid-connected After reactor, it is connected to the grid or drive other alternating current equipments to realize to power network feed or driving load, when energy storage converter device electricity When energy release finishes or reaches setting condition, stop the work to power network feed or driving load.
Embodiment of above is merely to illustrate the utility model, and is not limitation of the utility model, relevant technology neck The those of ordinary skill in domain, in the case where not departing from spirit and scope of the present utility model, can also make a variety of changes and Modification, therefore all equivalent technical schemes fall within category of the present utility model, scope of patent protection of the present utility model should It is defined by the claims.

Claims (15)

  1. A kind of 1. tandem type energy storage converter device utilized based on different battery modules differentiation, it is characterised in that the energy storage Converter plant includes:
    Three-phase cascade multilevel inverter and master controller;The three-phase cascade multilevel inverter is Y-connection, is handed over Flow output end access power network;Per being mutually an energy storage unsteady flow sequence, include the energy storage current transforming unit of several cascades;Each energy storage Current transforming unit includes:H-bridge unit, battery pack, the doube bridge power conversion DC/DC of the H-bridge unit and battery pack is connected, to described Battery pack carries out the battery management system of balancing energy control, and the state parameter of collection energy storage current transforming unit, driving H-bridge unit The sub-control circuit of action;The cascade for being cascaded as each H-bridge unit of each energy storage current transforming unit;Each sub-control circuit is by energy storage current transforming unit State parameter be sent to master controller, master controller is according to the state parameter received, the charge and discharge to each energy storage current transforming unit Piezoelectric voltage is adjusted, so as to control the charge-discharge energy of the Battery pack.
  2. 2. energy storage converter device as claimed in claim 1, it is characterised in that each battery pack includes what is be cascaded N number of battery, N are the integer more than 1;The battery management system is connected with the battery in the battery pack respectively.
  3. 3. energy storage converter device as claimed in claim 1, it is characterised in that the sub-control circuit collection energy storage current transforming unit State parameter, collection battery pack and the sub-control circuit state parameter of itself are specifically included, and be uploaded to master controller;And according to The pulse width modulation (PWM) duty cycle information that master controller issues is exported to H-bridge unit after handling PWM to drive the H Bridge unit acts, so as to control the operating time under the working condition of energy storage current transforming unit and working condition.
  4. 4. energy storage converter device as claimed in claim 2 or claim 3, it is characterised in that also including grid-connected reactor, the three-phase level The ac output end of connection formula multi-electrical level inverter accesses power network by grid-connected reactor.
  5. 5. the energy storage converter device as described in claim any one of 1-3, it is characterised in that the H-bridge unit is big using low pressure Power device.
  6. 6. energy storage converter device as claimed in claim 5, it is characterised in that the low-pressure high-power device is MOSFET devices Part.
  7. 7. energy storage converter device as claimed in claim 2, it is characterised in that the H-bridge unit according to master controller signal or Sub-control circuit signal forms bypass structure.
  8. 8. the energy storage converter device as described in claim any one of 1-3, it is characterised in that the state parameter includes:Battery Voltage, the capacity and temperature parameter of battery pack of group.
  9. 9. energy storage converter device as claimed in claim 8, it is characterised in that the state parameter also includes:It is each in battery pack Voltage, temperature, the charging and discharging currents of battery, state-of-charge (SOC) parameter of each battery in battery pack and battery pack.
  10. 10. the energy storage converter device as described in claim any one of 1-3, it is characterised in that in same phase energy storage unsteady flow sequence, Battery pack type at different levels is identical or different;In different phase energy storage unsteady flow sequences, the energy storage current transforming unit in same one-level is adopted With the battery pack of identical voltage.
  11. 11. energy storage converter device as claimed in claim 10, it is characterised in that different type battery pack includes different type lithium Battery pack and lead-acid battery group.
  12. 12. energy storage converter device as claimed in claim 1 or 2, it is characterised in that in the battery pack, the mould that is in series Group voltage is 36-80V.
  13. 13. energy storage converter device as claimed in claim 10, it is characterised in that the battery pack is using modularization, detachable Structure, all or part of replacing can be realized.
  14. 14. energy storage converter device as claimed in claim 9, it is characterised in that master controller uploads according to each sub-control circuit State parameter, obtain the electricity and/or voltage of each energy storage current transforming unit in each energy storage unsteady flow sequence;And according to energy storage unsteady flow sequence The electricity and/or information of voltage of each energy storage current transforming unit in row, with reference to grid-connected feed demand, calculate each energy storage current transforming unit PWM duty cycle and the sub-control circuit for being handed down to each energy storage current transforming unit respectively.
  15. 15. the energy storage converter device as described in claim any one of 1-3, it is characterised in that the energy storage converter device and electricity The interface of net uses external interface module, and the structure of the external interface module disclosure satisfy that and power network and electrical equipment timesharing electricity Gas connects.
CN201721134342.8U 2017-09-05 2017-09-05 A kind of tandem type energy storage converter device utilized based on different battery modules differentiation Active CN207134804U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108828304A (en) * 2018-06-06 2018-11-16 马鞍山明阳通信科技有限公司 A kind of micro-base station power supply management device and connection method
CN110581665A (en) * 2019-10-23 2019-12-17 阳光电源股份有限公司 Cascaded converter and control system thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108828304A (en) * 2018-06-06 2018-11-16 马鞍山明阳通信科技有限公司 A kind of micro-base station power supply management device and connection method
CN110581665A (en) * 2019-10-23 2019-12-17 阳光电源股份有限公司 Cascaded converter and control system thereof

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