CN105515117A - Intelligent management system for battery charge and discharge - Google Patents
Intelligent management system for battery charge and discharge Download PDFInfo
- Publication number
- CN105515117A CN105515117A CN201610039884.0A CN201610039884A CN105515117A CN 105515117 A CN105515117 A CN 105515117A CN 201610039884 A CN201610039884 A CN 201610039884A CN 105515117 A CN105515117 A CN 105515117A
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- Prior art keywords
- battery
- module
- power
- main control
- voltage
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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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 invention discloses an intelligent management system for battery charge and discharge. The intelligent management system comprises a plurality of intelligent battery modules mutually connected in series and a main control module, wherein each intelligent battery module is connected to the main control module respectively to provide battery residue capacity for the main control module and provide maximum chargeable or discharge powder for the main control module. According to signals of the residue capacity sent by the intelligent battery modules, the main control module provides real-time charge power or discharge power of each intelligent battery module according to the principle that when the residue capacity is low, the charge power is high or or the discharge power is low, or when the residue capacity is high, the charge power is low or the discharge power is high, and the intelligent battery modules perform input-output regulation according to the real-time power given by the main control module. In the intelligent management system, the modules can be randomly connected in series or connected in parallel, after batteries with different states of charge are connected in series, the balance can be achieved basically through one-time or several-time charge or discharge.
Description
Technical field
The invention belongs to cell art, particularly relate to a kind of battery charging and discharging intelligent management system.
Background technology
Battery management system is responsible for calculating, the battery protection of battery in battery pack electricity usually, the electric quantity balancing control between battery and the signal communication etc. inside and outside battery management system.In the prior art, generally use the product of battery, all need collocation battery management system to control.
Because battery is difficult to guarantee to have homogeneity completely in the fabrication process, the difference of charge or discharge characteristic between the battery unit of each series connection, can be there is.Therefore, when using the battery pack of series-connected cell unit, such problem can be there is: during charging, in same battery pack, even if some battery unit is overcharged, also still there is some battery unit and not yet reach capacity; Again or electric discharge time, in same battery pack, some battery unit discharges not yet completely, but still some battery unit is excessively discharged.In addition, if battery unit is excessively discharged for a long time/charges, remarkable deterioration may be occurred in the material forming battery unit, the characteristic of battery unit is dissimilated, and this deterioration is one of reason of difference between aggravation battery unit.
Summary of the invention
The object of the present invention is to provide a kind of battery charging and discharging intelligent management system, to overcome deficiency of the prior art.
For achieving the above object, the invention provides following technical scheme:
According to an embodiment of the present, a kind of battery charging and discharging intelligent management system is provided, comprises:
Multiple Smart battery modules of mutual series connection, power stage or input are carried out in composition main battery loop, simultaneously each described Smart battery module be connected to main control module for:
Battery remaining power is provided to main control module;
Maximum chargeable or discharge power is provided to main control module;
Main control module, according to the signal of the residual capacity that Smart battery module sends, according to the low then charge power of residual capacity is high or discharge power is low, the high principle that then charge power is low or discharge power is high of residual capacity, provide real time charging power or the discharge power of each Smart battery module, Smart battery module carries out the power adjustments of input and output according to the realtime power that main control module provides.
In a specific embodiment of the present invention, the battery modules that described each Smart battery module comprises an energy control plate respectively and is connected with described energy control plate, described energy control plate provides battery maximum chargeable or discharge power to main control module, and the realtime power simultaneously sent according to main control module requires to modulate the input-output power of battery modules.
In a specific embodiment of the present invention, described energy control plate comprises a two-way voltage modulation circuit, the real time charging that this voltage modulation circuit provides according to main control module or discharge power, regulate output or the input voltage of Smart battery module, thus regulation output or input power, export or input voltage high, then power is large, otherwise then power is little.
In a specific embodiment of the present invention, described voltage modulation circuit is one and regulates the duty ratio of electric current thus the BUCK circuit of control power stage by HF switch, bi-directional voltage modulation circuit be two voltage modulation circuits of a positive and a negative by the circuit after parallel connection, simultaneously by diode control electric current can only pass through from one of them voltage modulation circuit.
In a specific embodiment of the present invention, described system has two kinds of mode of operations:
1) charge mode: during charging, the remaining capacity value that main control module provides according to battery modules and the maximal input value that energy control plate provides, find out the Smart battery module of least residue capacity, and provide the current duty cycle data of this Smart battery module according to (this module residual capacity percentage of 1-)/(1-least residue capacity Smart battery module residual capacity percentage) for some Smart battery modules, thus the power output that control is surveyed to battery modules to intelligent object, after above-mentioned action is all implemented to each Smart battery module, then whole battery system is then by with unified time discharge off,
2) discharge mode: during electric discharge, the remaining capacity value that main control module provides according to battery modules and the maximal input value that energy control plate provides, find out the Smart battery module of greatest residual capacity, and provide the current duty cycle data of this intelligent object according to (this module residual capacity percentage of 1-)/(1-greatest residual capacity Smart battery module residual capacity percentage) for some Smart battery modules, thus control to the power of Smart battery module output, after above-mentioned action is all implemented to each Smart battery module, then whole battery system is then by complete with the charging of unified time.
In a specific embodiment of the present invention, described battery modules comprises the circuit estimated battery remaining power, the residual capacity estimation of battery is exported by battery modules or this battery modules capacity of anomalous integral of input current carry out subtracting each other or be added after obtain, when not having input and output electric current or current stabilization, this battery remaining power estimation circuit also can carry out the calibration of residual capacity according to battery " residual capacity-open circuit voltage " curve.
In a specific embodiment of the present invention, described battery modules is made up of multiple battery units of a battery unit or multiple series connection and/or parallel connection.
In a specific embodiment of the present invention, described each battery modules also comprises respectively:
Detecting voltage module, for selectively detecting the voltage of one of described battery unit;
Active balancing module, for receiving the total voltage of all battery units in described some battery units, and is transferred to specific battery unit after step-down;
Control module, is electrically connected with described detecting voltage module and active balancing module, for:
Capture the voltage signal that described detecting voltage module detects;
Described particular battery unit is determined according to described voltage signal;
Control described active balancing module and supply described particular battery unit electric energy;
Signal bus, is selectively electrically connected with one of described some battery units positive and negative electrode, and is electrically connected with described detecting voltage module and active balancing module,
Switch module, is connected between described some battery units and controller, and described control module also selectively connects the conductivity pathway of one of described signal bus and described some battery units for controlling described switch module.
Compared with prior art, the invention has the advantages that:
(1) can connection in series-parallel arbitrarily between module, the serial battery of different charging states together after, through charge or discharge once or several times, substantially can reach balanced;
(2) if wherein there is a module to break down, the use of whole system is not affected;
(3) control module can be passed through the voltage of identical signal bus detecting battery unit with active balancing module or charges to battery unit by control voltage detecting module, avoids multi erection, and reduces complexity and the production cost of line architecture.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Figure 1 shows that the functional-block diagram of battery charging and discharging intelligent management system in the specific embodiment of the invention;
Figure 2 shows that the schematic diagram of voltage modulation circuit in the specific embodiment of the invention.
Embodiment
Describe the present invention below with reference to each execution mode shown in the drawings.But these execution modes do not limit the present invention, the structure that those of ordinary skill in the art makes according to these execution modes, method or conversion functionally are all included in protection scope of the present invention.
Shown in composition graphs 1, battery charging and discharging intelligent management system comprises main control module and is connected to multiple Smart battery modules of main control module, is connected in series between the plurality of Smart battery module.
Main control module, according to the signal of the residual capacity that Smart battery module sends, according to the low charge power of residual capacity is high or discharge power is low, the high principle that then charge power is low or discharge power is high of residual capacity, provide real time charging power or the discharge power of each Smart battery module, Smart battery module carries out the power adjustments of input and output according to the realtime power that main control module provides.
Multiple Smart battery modules of mutual series connection, power stage or input are carried out in composition main battery loop, simultaneously each Smart battery module be connected to main control module for: provide battery remaining power to main control module; Maximum chargeable or discharge power is provided to main control module.The battery modules that each Smart battery module comprises an energy control plate respectively and is connected with energy control plate, energy control plate provides battery maximum chargeable or discharge power to main control module, and the realtime power simultaneously sent according to main control module requires to modulate the input-output power of battery modules.
Battery modules also comprises the circuit estimated battery remaining power, the residual capacity estimation of battery is exported by battery modules or this battery modules capacity of anomalous integral of input current carry out subtracting each other or be added after obtain, when not having input and output electric current or current stabilization, this battery remaining power estimation circuit also can carry out the calibration of residual capacity according to battery " residual capacity-open circuit voltage " curve.
The battery with certain voltage and capacity that battery modules is made up of multiple battery units of a battery unit or multiple series connection and/or parallel connection.
Battery is can charge-discharge battery, comprises storage battery, lithium battery etc.
Shown in ginseng Fig. 2, energy control plate comprises a two-way voltage modulation circuit, the real time charging that this voltage modulation circuit provides according to main control module or discharge power, regulate output or the input voltage of Smart battery module, thus regulation output or input power, export or input voltage high, then power is large, otherwise then power is little.Voltage modulation circuit is a duty ratio by adjustment electric current thus the circuit of control power stage.
Voltage modulation circuit is one and regulates the duty ratio of electric current thus the BUCK circuit of control power stage by HF switch, bi-directional voltage modulation circuit be two voltage modulation circuits of a positive and a negative by the circuit after parallel connection, simultaneously by diode control electric current can only pass through from one of them voltage modulation circuit.
System has two kinds of mode of operations:
1) charge mode: during charging, the remaining capacity value that main control module provides according to battery modules and the maximal input value that energy control plate provides, find out the Smart battery module of least residue capacity, and provide the current duty cycle data of this Smart battery module according to (this module residual capacity percentage of 1-)/(1-least residue capacity Smart battery module residual capacity percentage) for some Smart battery modules, thus the power output that control is surveyed to battery modules to intelligent object, after above-mentioned action is all implemented to each Smart battery module, then whole battery system is then by with unified time discharge off,
2) discharge mode: during electric discharge, the remaining capacity value that main control module provides according to battery modules and the maximal input value that energy control plate provides, find out the Smart battery module of greatest residual capacity, and provide the current duty cycle data of this intelligent object according to (this module residual capacity percentage of 1-)/(1-greatest residual capacity Smart battery module residual capacity percentage) for some Smart battery modules, thus control to the power of Smart battery module output, after above-mentioned action is all implemented to each Smart battery module, then whole battery system is then by complete with the charging of unified time.
Battery modules also comprises the circuit estimated battery remaining power, the residual capacity estimation of battery is exported by battery modules or this battery modules capacity of anomalous integral of input current carry out subtracting each other or be added after obtain, when not having input and output electric current or current stabilization, this battery remaining power estimation circuit also can carry out the calibration of residual capacity according to battery " residual capacity-open circuit voltage " curve.
In one embodiment, each battery modules also comprises respectively:
Detecting voltage module, for selectively detecting the voltage of one of described battery unit;
Active balancing module, for receiving the total voltage of all battery units in described some battery units, and is transferred to specific battery unit after step-down;
Control module, is electrically connected with described detecting voltage module and active balancing module, for:
Capture the voltage signal that described detecting voltage module detects;
Described particular battery unit is determined according to described voltage signal;
Control described active balancing module and supply described particular battery unit electric energy;
Signal bus, is selectively electrically connected with one of described some battery units positive and negative electrode, and is electrically connected with described detecting voltage module and active balancing module,
Switch module, is connected between described some battery units and controller, and described control module also selectively connects the conductivity pathway of one of described signal bus and described some battery units for controlling described switch module.
In this technical scheme, control module and detecting voltage module and active balancing module are electrically connected, its control voltage detecting module selectively detects the voltage of one of plural battery unit, and determines according to the voltage signal of acquisition the particular battery unit needing charging.Control module also receives the total voltage of all battery units in plural battery unit by controlling active balancing module, and charges to the particular battery unit of the needs determined charging.
Signal bus is set to selectively be electrically connected with the positive and negative level of one of plural battery unit, and this signal bus is also electrically connected with detecting voltage module and active balancing module simultaneously.Like this, signal bus just provides the current path of detecting voltage module detecting battery cell voltage simultaneously, and active balancing module carries out the current path that charges to particular battery unit.
Each battery modules also comprises the switch module be connected between plural battery unit and control module.It comprises the plural switch matrix corresponding with above-mentioned plural battery unit.Control module can opening and turning off and select signal bus and corresponding battery unit electrical communication by switch matrix corresponding to battery unit in control switch module.In the present embodiment, because detecting voltage process and the active balancing process of battery unit complete within the different time periods, so control module at least works during detecting He during active balancing respectively.
Time during control module is operated in detecting, it is connected by switch module needs the battery unit of detecting and signal bus to be electrically connected, and control voltage detecting module captures the voltage signal of this battery unit by signal bus simultaneously; Further, time during control module is operated in active balancing, it by controlling to need by the particular battery unit that charges and signal bus electrical communication, and is charged to this particular battery unit by active balancing module.
As is well known in the art, switch module can comprise the common switch form such as triode, controllable silicon, relay switch or metal oxide semiconductor field effect tube (MetallicOxideSemiconductorFieldEffecttransistor, MOSFET).In the present embodiment, switch module adopts MOSFET, and in switch module, each switch matrix comprises four MOSFET.
Main control module and control module can comprise microprocessor (MCU), this MCU can comprise CPU (CentralProcessingUnit, CPU), read-only memory module (read-onlymemory, ROM), random memory module (randomaccessmemory, RAM), time block, digital-to-analogue conversion module (A/Dconverter) and plural I/O port.Certainly, main control module and control module also can adopt the integrated circuit of other form, as: application-specific IC (ApplicationSpecificIntegratedCircuit, or field programmable gate arrays (FieldProgrammableGateArray, FPGA) etc. ASIC).
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (8)
1. a battery charging and discharging intelligent management system, is characterized in that, comprising:
Multiple Smart battery modules of mutual series connection, power stage or input are carried out in composition main battery loop, simultaneously each described Smart battery module be connected to main control module for:
Battery remaining power is provided to main control module;
Maximum chargeable or discharge power is provided to main control module;
Main control module, according to the signal of the residual capacity that Smart battery module sends, according to the low then charge power of residual capacity is high or discharge power is low, the high principle that then charge power is low or discharge power is high of residual capacity, provide real time charging power or the discharge power of each Smart battery module, Smart battery module carries out the power adjustments of input and output according to the realtime power that main control module provides.
2. battery charging and discharging intelligent management system according to claim 1, it is characterized in that: the battery modules that described each Smart battery module comprises an energy control plate respectively and is connected with described energy control plate, described energy control plate provides battery maximum chargeable or discharge power to main control module, and the realtime power simultaneously sent according to main control module requires to modulate the input-output power of battery modules.
3. battery charging and discharging intelligent management system according to claim 2, it is characterized in that: described energy control plate comprises a two-way voltage modulation circuit, the real time charging that this voltage modulation circuit provides according to main control module or discharge power, regulate output or the input voltage of Smart battery module, thus regulation output or input power, export or input voltage high, then power is large, otherwise then power is little.
4. battery charging and discharging intelligent management system according to claim 3, it is characterized in that: described voltage modulation circuit is one and regulates the duty ratio of electric current thus the BUCK circuit of control power stage by HF switch, bi-directional voltage modulation circuit be two voltage modulation circuits of a positive and a negative by the circuit after parallel connection, simultaneously by diode control electric current can only pass through from one of them voltage modulation circuit.
5. the battery charging and discharging intelligent management system belonging to claim 2, is characterized in that: described system has two kinds of mode of operations:
1) charge mode: during charging, the remaining capacity value that main control module provides according to battery modules and the maximal input value that energy control plate provides, find out the Smart battery module of least residue capacity, and provide the current duty cycle data of this Smart battery module according to (this module residual capacity percentage of 1-)/(1-least residue capacity Smart battery module residual capacity percentage) for some Smart battery modules, thus the power output that control is surveyed to battery modules to intelligent object, after above-mentioned action is all implemented to each Smart battery module, then whole battery system is then by with unified time discharge off,
2) discharge mode: during electric discharge, the remaining capacity value that main control module provides according to battery modules and the maximal input value that energy control plate provides, find out the Smart battery module of greatest residual capacity, and provide the current duty cycle data of this intelligent object according to (this module residual capacity percentage of 1-)/(1-greatest residual capacity Smart battery module residual capacity percentage) for some Smart battery modules, thus control to the power of Smart battery module output, after above-mentioned action is all implemented to each Smart battery module, then whole battery system is then by complete with the charging of unified time.
6. battery charging and discharging intelligent management system according to claim 2, it is characterized in that: described battery modules comprises the circuit estimated battery remaining power, the residual capacity estimation of battery is exported by battery modules or this battery modules capacity of anomalous integral of input current carry out subtracting each other or be added after obtain, when not having input and output electric current or current stabilization, this battery remaining power estimation circuit also can carry out the calibration of residual capacity according to battery " residual capacity-open circuit voltage " curve.
7. battery charging and discharging intelligent management system according to claim 2, is characterized in that: described battery modules is made up of multiple battery units of a battery unit or multiple series connection and/or parallel connection.
8. battery charging and discharging intelligent management system according to claim 2, is characterized in that: described each battery modules also comprises respectively:
Detecting voltage module, for selectively detecting the voltage of one of described battery unit;
Active balancing module, for receiving the total voltage of all battery units in described some battery units, and is transferred to specific battery unit after step-down;
Control module, is electrically connected with described detecting voltage module and active balancing module, for:
Capture the voltage signal that described detecting voltage module detects;
Described particular battery unit is determined according to described voltage signal;
Control described active balancing module and supply described particular battery unit electric energy;
Signal bus, is selectively electrically connected with one of described some battery units positive and negative electrode, and is electrically connected with described detecting voltage module and active balancing module,
Switch module, is connected between described some battery units and controller, and described control module also selectively connects the conductivity pathway of one of described signal bus and described some battery units for controlling described switch module.
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| CN106945543A (en) * | 2017-03-01 | 2017-07-14 | 安文科技有限公司 | Load balancing intelligent charge case |
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| CN110676522B (en) * | 2019-09-29 | 2020-07-14 | 华人运通(江苏)技术有限公司 | Battery output power adjusting method, battery management system and storage medium |
| CN111404185A (en) * | 2020-03-20 | 2020-07-10 | 阳光电源股份有限公司 | Charging system control method, controller and system |
| CN112365279A (en) * | 2020-10-13 | 2021-02-12 | 北京峰智科技有限公司 | Method and device for processing battery pack charging quantity data and computer equipment |
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| CN105515117B (en) | 2018-01-16 |
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