CN102364745B - Charging method for lithium ion power battery pack and lithium ion power battery pack system using method - Google Patents

Charging method for lithium ion power battery pack and lithium ion power battery pack system using method Download PDF

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CN102364745B
CN102364745B CN2011103380085A CN201110338008A CN102364745B CN 102364745 B CN102364745 B CN 102364745B CN 2011103380085 A CN2011103380085 A CN 2011103380085A CN 201110338008 A CN201110338008 A CN 201110338008A CN 102364745 B CN102364745 B CN 102364745B
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battery pack
battery
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series
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CN102364745A (en
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李松
李鹤
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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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention relates to a charging method for a lithium ion power battery pack and a lithium ion power battery pack system using the method. The charging method comprises the following steps of: 1, constructing basic battery units; 2, constructing a battery module; 3, setting an electromagnetic transformer charging electric energy configuration system for supplying balanced charging voltage to each hierarchy of the basic battery units of the battery module; and 4, realizing charging and discharging control and management for the battery pack through a battery pack control and management system and an independent charging and discharging management and control unit network of each basic battery unit, and managing, controlling and protecting charging and discharging work conditions of all monomer lithium ion batteries. By the lithium ion power battery pack system, the working voltage on rectification and voltage stabilization circuit devices of the basic battery units is reduced, so the cost of the battery pack system is reduced; furthermore, a good technical way is supplied to introduction and compatibility adaptation of various alternating and direct current charging power supplies; and the charging method is particularly suitable for the lithium ion power battery pack system with a large number of monomer lithium ion power battery packs, high capacity and high voltage output.

Description

The lithium-ion-power cell group system of the charging method of lithium-ion-power cell group and use the method
Technical field
The present invention relates to a kind of charging method of lithium-ion-power cell group and use the lithium-ion-power cell group system of the method, relate in particular to a kind of charging method of the lithium-ion-power cell group that adopts the charging of electromagnetic transformers equilibrium allocation and use the lithium-ion-power cell group system of the method.
Background technology
At many high power secondary battery applied technical fields, for technical needs such as the high-rate discharge ability of secondary cell, high magnification charging performance, high output voltage, highly charged capacity, monomer secondary cell technology can't satisfy.Thereby, cell need to be connected and composed the secondary cell module by series, parallel or mixing, satisfy high power electricity servo applications technical field to the technical needs such as highly charged capacity, high voltage and High-current output of secondary power supply.
Develop rapidly along with lithium-ion electric pool technology and relevant supporting technology, in existing secondary cell technology, the lithium-ion electric pool technology is compared with other secondary cell technology, in monomer battery voltage, gravimetric specific energy, volumetric specific energy, flash-over characteristic, charge characteristic, charged maintenance, memory effect, the feature of environmental protection, fail safe, fill/put and comprehensively compare aspect the secondary cell basic mechanical design features such as cycle life, operating temperature range, the lithium-ion electric pool technology has had clear superiority.
Under existing lithium ion battery technical conditions, because of the restriction of its technology mechanism, lithium ion battery is lower to overcharging and cross the overload ability to bear of putting, and operating characteristic at high temperature is relatively poor.If it is improper to discharge and recharge management and control, not only can causes the irreversible damage of monomer lithium ion battery, even can produce the pernicious consequences such as blast.Facts have proved, only the charged capacity of monomer lithium ion battery is simply done greatly not only have larger technology difficulty, and the output voltage of monomer lithium ion battery, can not satisfy nearly all high power secondary battery applied technical field to the demand of high output voltage.Thereby the lithium ion secondary power supply of high output voltage, large charged capacity can only be realized by tandem type or hybrid type lithium ion battery module mode.
Under existing lithium ion battery engineering condition processed, the charged capacity of volume production monomer lithium ion battery certainly exists certain consistency difference.When consisting of battery pack by the monomer lithium ion battery series connection that has consistency difference, if the charge and discharge balancing control and management is mishandling, then can at the charge and discharge process of series loop, cause partial monosomy battery overcharge or overdischarge.And the ager process along with battery pack, it is dominant to overcharge or cross due to the material flaw put phenomenon and all can impel the partial monosomy battery, the engineering process difference processed amplification of consistency difference, aging and the periodic duty life-span condition differentiation of accelerating part cell finally can cause the battery pack rapid failure because the partial monosomy battery produces irreversible damage.Thereby; when monomer lithium ion battery consists of battery pack; must take all monomer lithium ion battery charge independence control and managements, and take effectively to surpass the technical measures such as multiplying power discharging protection, extreme short-circuit protection, the protection of voltage antipole, ultra-high temperature protection, quality estimation and the adjustment of management and control strategy.
The high-capacity lithium-ion power battery group nearly all requires to have higher output voltage, for this reason, the lithium-ion-power cell group must be come satisfied high output voltage requirement to power battery pack by the monomer lithium ion battery series connection, and monomer lithium ion battery by series connection obtain the cumulative of all series connection monomer cell output voltages and after, but produced the cell that will make all participate in series connection and can effectively implement the management and control of charging, charging voltage require to be higher than the charge cutoff voltage of all series connection cells cumulative and.But be higher than civil power at the power battery pack charge cutoff voltage, and the low-voltage electric energy that produces in the transducing mode of ask for something is when charging effectively to power battery pack, then charging voltage must be promoted to and charges after being higher than the batteries charging cut-ff voltage.The way of boosting that the current driving force batteries management system extensively adopts is after the employing high-power electric-power semiconductor device inversion boosting, to provide rechargeable electrical energy in the parallel powering mode to all cells charging control and management systems.Produced thus high-power electric semiconductor inversion device and must have higher permission operating voltage, and the related device of all cell charging control and management unit also must have higher permission operating voltage.Under existing semiconductor device art condition, the cost of same model or semiconductor device of the same type depends primarily on it and allows operating voltage, and the cost rising ratio of semiconductor device surpasses the rising ratio that it allows operating voltage.Thereby, effectively reduce the operating voltage of high-power electric semiconductor inversion device and cell charging control and management unit related device, be directly connected to the cost of lithium-ion-power cell group control and management system.
The secondary power supply application market is very ripe to the expectation of lithium-ion-power cell group, solve monomer lithium ion battery by series connection, in parallel or mixing connects and composes the technical problem of lithium-ion-power cell group, undoubtedly can be to the lithium-ion-power cell group at hybrid vehicle, pure electric automobile, battery-operated motor cycle and bicycle, electric tool, electric power system, the railway system, the creation basic technology condition of quoting of the secondary power supply applications such as communication engineering system, and the lithium-ion-power cell group also can promote because of the technological progress of secondary power supply system the application system technical performance in these fields in the application in these fields.
Summary of the invention
The object of the present invention is to provide the lithium-ion-power cell group system of charging method and use the method for a kind of lithium-ion-power cell group, by the intelligent management and control that independently discharges and recharges management and control and battery pack system to all monomer lithium ion batteries, realize the control and management that discharges and recharges of battery pack, and the condition of work that discharges and recharges of all monomer lithium ion batteries is implemented management and control and protection; And by the multistage bootstrapping charging voltage of electromagnetic transformers equilibrium allocation technology, reduced the operating voltage of basic batteries charging control and management unit, reduced thus the cost of lithium-ion-power cell group system, and quoted and the compatible adaptive good technological approaches that provides for the charging of various powers of alterating and direct current.
To achieve these goals, the present invention proposes a kind of charging method of lithium-ion-power cell group, comprising:
Step 1 independently discharges and recharges control unit with the monomer lithium ion battery access, consists of basic battery unit;
Step 2 with some basic battery unit series connection or series-parallel connection, consists of battery modules;
Step 3 arranges electromagnetic transformers rechargeable electrical energy configuration-system, and the multistage bootstrapping secondary winding by electromagnetic transformers is decomposed into the voltage section with the electromagnetic induction electromotive force, balanced charging voltage is provided for respectively the basic battery unit of each level of series-connected cell module;
Step 4, independently discharge and recharge the control unit networking by battery pack control and management system and each basic battery unit, consist of the inner distributed local control and management of battery pack system, realize the control and management that discharges and recharges of battery pack, and the condition of work that discharges and recharges of all monomer lithium ion batteries is carried out management and control and protection;
In the step 3, described electromagnetic transformers rechargeable electrical energy configuration-system comprises: electromagnetic transformers, dc inversion control system, interchange input control system, electromagnetic induction detection system; Described electromagnetic transformers comprises: soft magnetic material is unshakable in one's determination, winding, secondary winding; Winding of described electromagnetic transformers comprises: winding of dc inversion excitation, direct winding of AC excitation; The secondary winding of described electromagnetic transformers comprises: multistage bootstrapping secondary winding, electromagnetic induction detect secondary winding.
In the step 1, described basic battery unit comprises: monomer lithium ion battery, independently discharge and recharge control unit, installation and radiator structure support; The described control unit that independently discharges and recharges comprises: unit management and control MCU and peripheral circuit thereof, rectification circuit, charging current and voltage control circuit, charging/discharging voltage and charging current observation circuit, antipole forced electric discharge protective circuit, temperature sensing circuit, series connection group charging level buffer circuit, internal lan interface circuit; Be filled with charge parameter management and control program, quality strategy and database management and control program, networking management and control program in described unit management and control MCU or the memory that connects.
Described step 2 comprises: with some basic battery unit series connection, consist of the series-connected cell module; Some series-connected cell modules are in parallel, consist of the series-parallel connection battery modules.
Described step 3 comprises: step 3.1, described dc inversion control system, different voltage magnitude DC charging electric energy with the external circuit submission, inversion is regulated and control to winding of dc inversion excitation of the AC energy input electromagnetic transformers of design specification, and passes through the detection data adjustment inversion control parameter that the electromagnetic induction detection system is submitted to; Described interchange input control system is with winding of direct AC excitation of the AC energy access electromagnetic transformers of input; Step 3.2, the multistage bootstrapping secondary winding of described electromagnetic transformers is decomposed into the electromagnetic induction electromotive force and the corresponding voltage section of each level of series-connected cell module, balanced charging voltage is provided for respectively the basic battery unit of each level of series loop; The electromagnetic induction of described electromagnetic transformers detects secondary winding, submits the electromagnetic induction sense potential sample of electromagnetic transformers system control to for the electromagnetic induction detection system; Respectively the connect basic battery unit of level of step 3.3, described series-connected cell module, the corresponding level winding from the multistage bootstrapping secondary winding of electromagnetic transformers obtains rechargeable electrical energy respectively, and charges to monomer lithium ion battery by preset charged management and control program; Step 3.4, described series-parallel connection battery modules electromagnetic transformers configuration mode is taked separately electromagnetic transformers pattern of configuration of each series-connected cell module, or is taked a plurality of series-connected cell modules to share the pattern of an electromagnetic transformers; Taking each series-connected cell module to dispose separately under the electromagnetic transformers pattern, this series-connected cell module respectively connect level basic battery unit respectively from this series-connected cell module separately the corresponding level winding of the multistage bootstrapping secondary winding of the electromagnetic transformers of configuration obtain rechargeable electrical energy, and charge to monomer lithium ion battery by preset charged management and control program; Taking a plurality of series-connected cell modules to share under the pattern of an electromagnetic transformers, the basic battery unit of same level of each series-connected cell module obtains rechargeable electrical energy from the corresponding level winding of the multistage bootstrapping secondary winding of the electromagnetic transformers that shares jointly, and respectively by the monomer lithium ion battery charging of default charging management and control program to separately management and control.
Described step 4 comprises: step 4.1, battery pack control and management system and each basic battery unit independently discharge and recharge the control unit networking, consist of the inner distributed local control and management of battery pack system, described battery pack control and management system comprises: central processing unit system, electric current and voltage and temperature-sensing system, the power electronics control system, show and control system, the external communication interface system is filled with battery set charge/discharge management and control program in described central processing unit system or the memory device that connects, System Programming information and basic data library, networks trategy and node management and control program, external call function and management and control program; Step 4.2, described battery pack control and management system and each basic battery unit independently discharge and recharge control unit, set up the communication of management and control instruction and data by the battery pack internal lan, realize that with the management and control strategy of default control hypervisor the mode of operation of battery pack and all monomer lithium ion batteries being discharged and recharged condition of work carries out management and control and protection; Step 4.3, described battery pack control and management system sets up the communication of management and control instruction and data by external communication interface and outside control-management system, and the external call interface protocol can be SBS, CAN or self-defining interface communication protocol; Described external communication interface can be SBS, CAN or self-defining external data communication interface.
The present invention also provides a kind of lithium-ion-power cell group system that uses the charging method of above-mentioned lithium-ion-power cell group, it is characterized in that, described lithium-ion-power cell group system comprises: the battery modules that some basic battery unit series connection or series-parallel connection consist of, battery pack control and management system, electromagnetic transformers rechargeable electrical energy configuration-system, the battery pack structure support, housing and heat radiation cooling system, described heat radiation cooling system and battery pack control and management system are installed on the battery pack structure support, described battery modules and electromagnetic transformers rechargeable electrical energy configuration-system can be combined as detachable dongle configuration and be installed on the described battery pack structure support, also electromagnetic transformers rechargeable electrical energy configuration-system can be installed on the described battery pack structure support, battery modules be combined as detachable dongle configuration be installed on the described battery pack structure support.
Described basic battery unit comprises: monomer lithium ion battery, independently discharge and recharge PCB, installation and the radiator structure support that each electronic circuit system of control unit forms, and structurally combination is assembled together, locating support and interface by structural framing, be installed in the lithium-ion-power cell group, described monomer lithium ion battery and independently discharge and recharge control unit, structurally can be packaged together, also can separate.
The AC power of an adaptive input of winding of described direct AC excitation comprises: the alternating current that electric main, industrial power alternating current, all kinds of alternating current generator send, the alternating current that all kinds of electronic system is sent.
The configuration mode of the electromagnetic transformers rechargeable electrical energy configuration-system of described lithium-ion-power cell group system, can take separately electromagnetic transformers rechargeable electrical energy configuration-system of configuration of each series mould set, also can take a plurality of series mould set to share the pattern of an electromagnetic transformers rechargeable electrical energy configuration-system.
Beneficial effect of the present invention: the lithium-ion-power cell group system of the charging method of lithium-ion-power cell group of the present invention and use the method, adopt the bootstrapping series connection level voltage configuring technical of electromagnetic transformers rechargeable electrical energy configuration-system, balanced charging voltage can be provided to the basic battery unit of each level of series mould set, and the charging voltage that each basic battery unit obtains is substantially equal, and can be in the basis of satisfying minimum charging voltage be controlled at the amplitude range of less, reduced thus the operating voltage that basic battery unit rectification and voltage stabilizing circuit device bear, thereby reduced battery pack control and management system cost, and the quoting and the compatible adaptive good technological approaches that provides of various alternating current-direct current charge power supplies is provided, especially be fit to large quantity monomer lithium ion battery in groups, large capacity, the lithium-ion-power cell group system of high voltage output.
In order further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, the present invention is limited.
Description of drawings
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is described in detail, will make technical scheme of the present invention and other beneficial effects apparent.
Fig. 1 is the charging method schematic flow sheet of lithium-ion-power cell group of the present invention;
Fig. 2 is the basic battery unit electricity schematic block diagram of lithium-ion-power cell group system of the present invention;
Fig. 3 is the entity structure schematic diagram of Fig. 2;
Fig. 4 is electromagnetic transformers rechargeable electrical energy configuration-system electricity schematic block diagram of the present invention;
Fig. 5 is the tandem type lithium-ion-power cell group system electricity schematic block diagram of first embodiment of the invention;
Fig. 6 a-6c is the entity structure schematic diagram of Fig. 5;
Fig. 7 is the hybrid type lithium-ion-power cell group system electricity schematic block diagram of second embodiment of the invention;
Fig. 8 a-8d is the entity structure schematic diagram of Fig. 7;
Fig. 9 is the hybrid type lithium-ion-power cell group system electricity schematic block diagram of third embodiment of the invention;
Figure 10 a-10f is the entity structure schematic diagram of Fig. 9.
Embodiment
Be technological means and the effect that the predetermined purpose of realization is taked for further setting forth the present invention, see also following about detailed description of the present invention and accompanying drawing, believe purpose of the present invention, feature and characteristics, should obtain thus going deep into and concrete understanding, yet accompanying drawing only provides reference and explanation usefulness, and the present invention is limited.
Shown in Fig. 1-10, the charging method flow process of lithium-ion-power cell group of the present invention comprises:
Step 1 independently discharges and recharges control unit with monomer lithium ion battery 130 accesses, consists of basic battery unit 100.Described basic battery unit 100 is by monomer lithium ion battery 130, independently discharge and recharge control unit, installation and radiator structure support 140 and 141 and consist of; The described control unit that independently discharges and recharges is made of unit management and control MCU and peripheral circuit 110, rectification circuit 120, charging current and voltage control circuit 111, charging/discharging voltage and charging current observation circuit 112, antipole forced electric discharge protective circuit 121, temperature sensing circuit 123, series connection group charging level buffer circuit 122, internal lan interface circuit 102; Monomer lithium ion battery 130 makes up by installation and radiator structure support 140 and 141 with the PCB that independently discharges and recharges each electronic circuit system composition of control unit and is assembled together, and consists of basic battery unit 100; Be filled with charge parameter management and control program, quality strategy and database management and control program, networking management and control program in described unit management and control MCU or the memory that connects; Independently discharge and recharge control unit and discharge and recharge the management and control program by default, the condition of work that discharges and recharges of monomer lithium ion battery 130 is carried out management and control and protection.The charging course of work of described basic battery unit 100 is: independently discharge and recharge the multistage bootstrapping secondary winding 224 existence output electric energy that control unit detects electromagnetic transformers 220, and when monomer lithium ion battery 130 state of the art meet charge condition, automatically start charging current and voltage control circuit 111, state of the art according to monomer lithium ion battery 130, with preset charged management and control strategy monomer lithium ion battery 130 is charged, in the charging process, independently discharge and recharge operating voltage and the temperature of control unit Real-Time Monitoring monomer lithium ion battery 130, and estimate charged magnitude of recruitment, the dominant quality of assessment charge characteristic and cycle characteristics and new database more, when every controlled parameter reaches the management and control critical point, report and submit battery pack control and management system by the battery pack internal lan; The described basic battery unit 100 discharge courses of work: monomer lithium ion battery 130 discharges with the series-connected cell module, its rate of discharge equals series-connected cell module 300 (520) rates of discharge, in the discharge process, independently discharge and recharge operating voltage and the temperature of control unit Real-Time Monitoring monomer lithium ion battery 130, and estimate charged burst size, the dominant quality of assessment flash-over characteristic and cycle characteristics and new database more, when reaching the management and control critical point, every controlled parameter reports and submits battery pack control and management system by the battery pack internal lan.
Step 2 with some basic battery unit 100 series connection or series-parallel connections, consists of battery modules.This step 2 comprises: with some basic battery unit 100 series connection, consist of the series-connected cell module; Some series-connected cell modules are in parallel, consist of the series-parallel connection battery modules.
Step 3, electromagnetic transformers rechargeable electrical energy configuration-system 200 is set, multistage bootstrapping secondary winding 224 by electromagnetic transformers 220 is decomposed into the voltage section with the electromagnetic induction electromotive force, balanced charging voltage is provided for respectively the basic battery unit 100 of each level of series-connected cell module.In this step 3, described electromagnetic transformers rechargeable electrical energy configuration-system 200 is made of electromagnetic transformers 220, dc inversion control circuit 210, interchange input control system 211, electromagnetic induction detection system 212; Described electromagnetic transformers system 220 is by soft magnetic material iron core 221, winding 222 of dc inversion excitation, directly winding 223 of AC excitation, multistage bootstrapping secondary winding 224, electromagnetic induction detect secondary winding 225 and consist of.Described step 3 further comprises, step 3.1, described dc inversion control circuit 210, different voltage magnitude DC charging electric energy with the external circuit submission, inversion is regulated and control to winding 222 excitations of dc inversion excitation of the AC energy input electromagnetic transformers 220 of design specification, and passes through the detection data adjustment inversion control parameter that electromagnetic induction detection system 212 is submitted to; Described interchange input control system 211 is with winding 223 excitations of direct AC excitation of the AC energy access electromagnetic transformers 220 of outside input; Step 3.2, the multistage bootstrapping secondary winding 224 of described electromagnetic transformers 220, the electromagnetic induction electromotive force is decomposed into and the corresponding voltage section of series-connected cell module 300 (520) each level, balanced charging voltage is provided for respectively the basic battery unit 100 of each level of series loop; The electromagnetic induction of described electromagnetic transformers 220 detects secondary winding 225 is submitted the electromagnetic transformers system to electromagnetic induction detection system 212 electromagnetic induction sense potential sample; Step 3.3, respectively the connect basic battery unit of level of described series-connected cell module 300 (520), corresponding level winding from the multistage bootstrapping secondary winding of electromagnetic transformers obtains rechargeable electrical energy respectively, and by preset charged management and control program to monomer lithium ion battery 130 chargings; Its charging course of work is: after winding 222 of the dc inversion excitation of electromagnetic transformers 220 or direct winding of the AC excitation 223 input rechargeable electrical energy excitations, induct with the frequency electromotive force in multistage bootstrapping secondary winding 224, multistage bootstrapping secondary winding 224, the electromagnetic induction electromotive force is decomposed into and the corresponding voltage section of series-connected cell module 300 (520) each level, input respectively the basic battery unit 100 of the corresponding level of series connection battery modules, the control unit that independently discharges and recharges of this basic battery unit 100 is charged to monomer lithium ion battery 130 by preset charged management and control program; Step 3.4, electromagnetic transformers 220 configuration modes of described series-parallel connection battery modules, take separately configuration electromagnetic transformers 220 patterns (the hybrid type lithium-ion-power cell group system 400 of the second embodiment) of each series-connected cell module, or take a plurality of series-connected cell modules to share the pattern (the hybrid type lithium-ion-power cell group system 500 of the 3rd embodiment) of an electromagnetic transformers 220; Taking each series-connected cell module to dispose separately under electromagnetic transformers 220 patterns, this series-connected cell module respectively connect level basic battery unit 100 respectively from this series-connected cell module separately the corresponding level winding of the multistage bootstrapping secondary winding 224 of the electromagnetic transformers 220 of configuration obtain rechargeable electrical energy, and by preset charged management and control program to monomer lithium ion battery 130 chargings; Taking a plurality of series-connected cell modules to share under the pattern of an electromagnetic transformers 220, the basic battery unit of the same level of each series-connected cell module 100 obtains rechargeable electrical energy from the corresponding level winding of the multistage bootstrapping secondary winding 224 of the electromagnetic transformers 220 that shares jointly, and respectively by monomer lithium ion battery 130 chargings of default charging management and control program to separately management and control.
Step 4; independently discharge and recharge the control unit networking by battery pack control and management system and each basic battery unit 100; consist of the inner distributed local control and management of battery pack system; realize the control and management that discharges and recharges of battery pack, and the condition of work that discharges and recharges of all monomer lithium ion batteries 130 is carried out management and control and protection.This step is by the built-in preset strategy management and control program of control unit that independently discharges and recharges of battery pack control and management system and basic battery unit 100; realization is estimated and the adjustment of management and control strategy the quality that discharges and recharges condition of work and the management and control of implementation Process independence and monitoring, realization battery pack and monomer ion battery 130 of each monomer lithium ion battery 130 of battery pack, and the situations such as the super multiplying power discharging of battery pack, extreme short circuit, monomer battery voltage antipole, superhigh temperature work is implemented the real-time guard of preset strategy.Lithium-ion-power cell group control and management system arranges external communication management and control interface, can set up the instruction and data communication with the external control management system, realize the lithium-ion-power cell group system discharge and recharge management and control, parameter is reported and submitted arranges etc. with pattern.This step 4 further comprises step 4.1, battery pack control and management system and each basic battery unit 100 independently discharge and recharge the control unit networking, consist of the inner distributed local control and management of battery pack system, described battery pack control and management system is by central processing unit system, discharging current and voltage and temperature-sensing system, the discharged power electronic control circuit, show and control system, the external communication interface system forms, and is filled with battery set charge/discharge management and control program in described battery pack mesotube controlling processor system or the memory device that connects, System Programming information and basic database management and control program, networks trategy and node management and control program, external call function and management and control program; Step 4.2, described battery pack control and management system and each basic battery unit 100 independently discharge and recharge control unit, set up the communication of management and control instruction and data by the battery pack internal lan, realize that with the management and control strategy of default control hypervisor the mode of operation of battery pack and all monomer lithium ion batteries 130 being discharged and recharged condition of work carries out management and control and protection; Step 4.3, described battery pack control and management system sets up the communication of management and control instruction and data by external communication interface and outside control-management system, and the external call interface protocol can be other or the self-defining interface communication protocol such as SBS, CAN; Described external communication interface can be other or the self-defining external data communication interface such as SBS, CAN.
In step 4, the lithium-ion-power cell group discharge course of work: the lithium-ion-power cell group arranges direct discharge mode and management and control discharge mode.Under direct discharge mode, battery pack control and management system controlled discharge power electronics control system is directly discharged to external circuit, under the management and control discharge mode, battery pack control and management system is according to controlling or communication management and control instruction, and controlled discharge power electronics control system is carried out discharge or closed.Which kind of discharge mode no matter, during battery power discharge, rate of discharge depends on battery pack output potential and external resistance satisfying under the default technical conditions such as battery pack license discharge-rate, all monomer lithium ion battery 130 ending discharge voltages, working temperature.
Lithium-ion-power cell group direct current energy charging process: the lithium-ion-power cell group arranges automatic charging pattern and management and control charge mode.Under the automatic charging pattern, battery pack control and management system detects external circuit voltage automatically, when being in discharge condition and external circuit, battery pack exists when being higher than battery power discharge voltage and battery pack state of the art and meeting charge condition, automatically stop discharge and switch to charged state, when battery pack is in the discharge halted state, and external circuit exists when being higher than the minimum charging voltage of design specification and battery pack state of the art and meeting charge condition, automatically enters charged state.Under the management and control charge mode, battery pack control and management system stops discharge and switches to charged state according to controlling or communication charging management and control instruction.No matter which kind of pattern to enter charged state from, during charging, direct current energy input control and dc inversion control circuit 210 are winding 222 of dc inversion excitation of the AC energy input electromagnetic transformers 220 of design specification amplitude with the inversion of external circuit direct current energy, the multistage bootstrapping secondary winding 224 of electromagnetic transformers 220, the electromagnetic induction electromotive force is decomposed into the voltage section, balanced charging voltage is provided for respectively the basic battery unit 100 of each level of series loop.Taking DC charging electric energy input circuit and battery pack output circuit to separate, and the DC charging electric energy is directly being accessed under the circuit-mode of direct current energy input control and inversion system 210, charging when battery pack system can be implemented in discharge.
Lithium-ion-power cell group AC energy charging process: battery pack control and management system detects ac input end automatically, when detecting the AC energy access that meets design specification and battery pack state of the art and meet charge condition, AC energy is inputted the once direct AC excitation winding 223 of electromagnetic transformers 220 through exchanging input control system 211, the multistage bootstrapping secondary winding 224 of electromagnetic transformers 220, the electromagnetic induction electromotive force is decomposed into the voltage section, balanced charging voltage is provided for respectively the basic battery unit 100 of each level of series loop.Under the AC energy charge mode, can in discharge, charge with battery pack system.The AC power of described direct AC excitation winding 223 adaptive inputs comprises: the alternating current that electric main, industrial power alternating current, all kinds of alternating current generator send, the alternating current that all kinds of electronic system is sent.
The present invention also provides a kind of lithium-ion-power cell group system that uses above-mentioned lithium-ion-power cell group charging method, comprise the battery modules that some basic battery unit 100 series connection or series-parallel connection consist of, battery pack control and management system, electromagnetic transformers rechargeable electrical energy configuration-system 200, the battery pack structure support, housing and heat radiation cooling system, described heat radiation cooling system and battery pack control and management system are installed on the interior battery pack structure support of housing, described battery modules and electromagnetic transformers rechargeable electrical energy configuration-system 200 can be combined as detachable dongle configuration and be installed on the described battery pack structure support, also electromagnetic transformers rechargeable electrical energy configuration-system 200 can be installed on the described battery pack structure support, battery modules be combined as detachable dongle configuration be installed on the described battery pack structure support.Because reliability and the theoretical work life-span of monomer lithium ion battery 130, all be lower than other system of battery pack, and for electric property, mechanical performance, engineering process processed, compatibility and interchangeability to the lithium-ion-power cell group system, and applied environment, maintenance is convenient and the aspect such as standardization is considered, uses the lithium-ion-power cell group system entity structure of above-mentioned lithium-ion-power cell group charging method as follows:
Basic battery unit 100 system entity structures are as shown in Figure 3: comprise monomer lithium ion battery 130, independently discharge and recharge PCB, installation and radiator structure support 140 and 141 of control unit each several part device and combination, and structurally combination is assembled together, consist of basic battery unit 100 entity structure plug-in units, described monomer lithium ion battery and independently discharge and recharge control unit, structurally can be packaged together, also can separate.
List is organized tandem type lithium-ion-power cell group system 300 entity structures as shown in Figure 6: comprise series-connected cell module, electromagnetic transformers rechargeable electrical energy configuration-system 200, battery pack control and management system, the basic battery unit 100 of all of series-connected cell module is combined as detachable dongle configuration, and be installed on the battery pack system structure stand by the battery pack system interface, electromagnetic transformers rechargeable electrical energy configuration-system 200 and battery pack control and management system and device are on the battery pack system structure stand.
Take hybrid type lithium-ion-power cell group system 400 entity structures of an electromagnetic transformers rechargeable electrical energy configuration-system pattern formation of the independent configuration of each series-connected cell module as shown in Figure 8: comprise battery pack control and management system, some series-connected cell modules and electromagnetic transformers rechargeable electrical energy configuration-system 200 are combined as the Demountable plug-in unit, battery pack control and management system and device is on the battery pack system structure stand, the Demountable plug-in unit of each series-connected cell module and 200 combinations of electromagnetic transformers rechargeable electrical energy configuration-system is installed on the battery pack system structure stand by the battery pack system interface.
Take hybrid type lithium-ion-power cell group system 500 entity structures of the shared electromagnetic transformers rechargeable electrical energy configuration-system pattern formation of a plurality of series mould set as shown in Figure 10: comprise some series-connected cell modules 520, electromagnetic transformers rechargeable electrical energy configuration-system 200, battery pack control and management system, battery pack control and management system and electromagnetic transformers rechargeable electrical energy configuration-system 200 devices are on battery pack system foundation structure, each series-connected cell module 520 is detachable dongle configuration, and is installed on the battery pack system structure stand by the battery pack system interface.
Fig. 2 is the basic battery unit electricity theory diagram of lithium-ion-power cell group system of the present invention; the electrical system of this basic battery unit 100; by monomer lithium ion battery 130 and independent control and management cell formation; described independent control and management unit comprises: unit management and control MCU and peripheral circuit 110 thereof; rectification circuit 120; charging current and voltage control circuit 111; antipole forced electric discharge protective circuit 121; charging/discharging voltage and charging current observation circuit 112; temperature sensing circuit 123; series connection group charging level buffer circuit 122; internal lan connects 102, is filled with charge parameter management and control program in this MCU or the memory that connects; quality strategy and database management and control program; networking management and control program.
The discharge operation principle of basic battery unit 100: during monomer lithium ion battery 130 discharge, discharging current is through monomer lithium ion battery 130, series connection group charging level buffer circuit 122,101 outputs of unit cathode output end, 130 consist of discharge loops by external circuit to unit negative pole end 109 to monomer lithium ion battery.Diode circuit 121 consists of antipole forced electric discharge protective circuit, prevents that the forced electric discharge of monomer lithium ion battery 130 over-discharge states from producing antipole.The discharge working temperature of the discharge voltage of charging/discharging voltage and charging current observation circuit 112 monitoring monomer lithium ion batteries 130 and current state of charge, temperature sensor 123 monitoring lithium ion batteries 130.
Basic battery unit 100 charging operation principles: the AC charging electric energy of multistage bootstrapping secondary winding 224 outputs of electromagnetic transformers 220 is sent into basic battery unit 100 from 104 and 105 ends, is converted to direct current through bridge rectifier 120.When master control management MCU circuit 110 has detected input charging voltage, by default charging control supervisor, control charging stream and voltage control circuit 111 are to monomer lithium ion battery 130 chargings, and by charging/discharging voltage and 112 detections of charging current observation circuit and correction charging voltage and electric current, by the charging working temperature of temperature sensor 123 monitoring lithium ion batteries 130, charging current is through bridge rectifier 120, charging current and voltage control circuit 111, charging/discharging voltage and charging current observation circuit 112, monomer lithium ion battery 130 to bridge rectifier 120 consists of charge circuit.
Basic battery unit 100 discharges and recharges the management and control strategy: the management and control program that discharges and recharges that master control management MCU circuit 110 is built-in, independent every pre-programmed of carrying out this unit cell lithium ion battery 130 discharges and recharges technical parameter, and will to discharge and recharge data reduction be the storage of cycle period parameter.Master control management MCU circuit 110 default management and control parameters comprise: the manufacturing informations such as the model of monomer lithium ion battery 130 and charging standard, the real-time quality information such as cycle-index and residual life.Battery pack central authorities control-management system is built-in pre-programmed battery set charge/discharge management and control program all, and sets up management and control instruction and data message alternately and the mode of operation management and control by internal lan interface circuit 102 and basic battery unit master control management MCU circuit 110.
Fig. 3 is the basic battery unit inserter noumenon structural representation of lithium-ion-power cell group system of the present invention, basic battery unit 100 entity structures comprise: monomer lithium ion battery 130, independently discharge and recharge PCB, installation and radiator structure support 140 and 141 of control unit device formation, and structurally combination is assembled together, and consists of basic battery unit plug-in unit.Basic battery unit plug-in unit is by the anodal output interface 101 access battery pack systems in external charging AC energy input interface 104 and 105, battery pack control internal lan interface 102, unit zero level interface 109, unit of PCB forme.
Fig. 4 is the electromagnetic transformers rechargeable electrical energy configuration-system electricity schematic block diagram of lithium-ion-power cell group system of the present invention, electromagnetic transformers rechargeable electrical energy configuration-system 200 is comprised of electromagnetic transformers 220, dc inversion control circuit 210, AC energy access control circuit 211, electromagnetic induction testing circuit 212, management and control interface 202 and 203, detection data-interface 206; Described electromagnetic transformers 220 is detected secondary winding 225 and is consisted of by soft magnetic material iron core 221, winding 222 of dc inversion excitation, direct winding 223 of AC excitation, multistage bootstrapping secondary winding 224, electromagnetic induction.In the battery pack series loop that is consisted of by a plurality of basic battery unit 100 series connection, adopt electromagnetic transformers 220 that the rechargeable electrical energy of an excitation winding input is configured to the voltage section of design specification by multistage bootstrapping secondary winding 224, balanced charging voltage is provided for respectively the basic battery unit 100 of each level of series loop.Winding 223 of described direct AC excitation can be according to battery pack application demand and AC power technical conditions, the corresponding access of the design number of phases, no-load voltage ratio and connection etc., adaptive input comprises: the alternating current that electric main, industrial power alternating current, all kinds of alternating current generator send, the AC power such as alternating current that all kinds of electronic system is sent.
When the input direct-current electric energy charges, the direct current energy of input is converted to winding 222 excitations of dc inversion excitation of the AC energy input electromagnetic transformers 220 of design specification through dc inversion circuit 210, induct with the frequency AC energy in multistage bootstrapping secondary winding 224, decompose configuration through multistage bootstrapping secondary winding 224, the charging voltage of equilibrium is provided to the basic battery unit of each level of series mould set.Disregarding under the loss condition, the induced potential Ua=U1+U2+U3 of multistage bootstrapping secondary winding 224 ... + Un depends on that the umber of turn of a winding 222 of multistage bootstrapping secondary winding 224 and dc inversion excitation of the excitation electromotive force Uid of a winding 222 of dc inversion excitation and electromagnetic transformers compares N224/N222.
When the input AC electric energy charges, the AC energy of input is through winding 223 excitations of the AC energy access control circuit 211 direct AC excitation of access, induct with the frequency AC energy in multistage bootstrapping secondary winding 224, decompose configuration through multistage bootstrapping secondary winding 224, the charging voltage of equilibrium is provided to the basic battery unit of each level of series mould set.Disregarding under the loss condition, the induced potential Ua=U1+U2+U3 of multistage bootstrapping secondary winding 224 ... + Un depends on that the umber of turn of a winding 223 of multistage bootstrapping secondary winding 224 and direct AC excitation of the excitation electromotive force Uia of a winding 223 of direct AC excitation and electromagnetic transformers compares N224/N223.
Which kind of charge power supply pattern no matter, U1, U2, U3 ..., Un be respectively series mould set ground floor, the second layer, the 3rd layer ..., the n layer basic battery unit charged electric potential.Because multistage bootstrapping secondary winding 224 is designed to N224=N1+N2+N3 ... + Nn, and N1=N2=N3=...=Nn, thereby multistage bootstrapping secondary winding 224 is substantially equal for the charging voltage that the basic battery unit of each level of series mould set provides, i.e. U1=U2=U3=...=Un.For the charging management and control of monomer lithium ion battery 130,5V≤U1=U2=U3=...=Un≤10V can satisfy monomer lithium ion battery charging valve control techniques demand fully.Thereby, significantly reduced the operating voltage that each basic battery unit rectification and voltage stabilizing circuit electronic device bear, thereby reduced the cost of battery pack control and management system, especially monomer lithium ion battery 130 quantity that consist of battery modules are more, the series mould set level is more, and the advantage of low cost of battery pack system is just more remarkable.
Fig. 5 is the tandem type lithium-ion-power cell group system electricity theory diagram of first embodiment of the invention, tandem type lithium-ion-power cell group system 300 is made of battery pack control and management system, electromagnetic transformers rechargeable electrical energy configuration-system 200 and tandem type battery modules.Battery pack control and management system is comprised of with control system 319, internal lan interface circuit 302 battery pack central processing unit system 310, battery power discharge electric current and voltage and temperature-sensing system 311, discharged power electronic control system 312, reverse blocking circuit 314, demonstration.The tandem type battery modules is composed in series by some basic battery units 100.Electromagnetic transformers rechargeable electrical energy configuration-system 200 is comprised of electromagnetic transformers 220, dc inversion control circuit 210, AC energy access control circuit 211, electromagnetic induction testing circuit 212.Electromagnetic transformers 220 is detected secondary winding 225 and is formed by soft magnetic material iron core 221, winding 222 of dc inversion excitation, direct winding 223 of AC excitation, multistage bootstrapping secondary winding 224, electromagnetic induction.
The discharge operation principle of tandem type lithium-ion-power cell group system 300: the cumulative series connection electromotive force that forms of basic battery unit 100 electromotive forces of each of serial battery pack system 300 interior series connection, consist of discharge loop in 309 accesses of series battery cathode output end 301 and zero level end load, discharging current depends on electrical potential difference and the external resistance of 309 at cathode output end 301 and zero level end.During serial battery pack system 300 discharge, discharging current is through the basic battery unit 100 of each level, discharging current and voltage and temperature-sensing system 311, discharged power electronic control circuit 312, reverse blocking circuit 314,301 outputs of module cathode output end, consist of discharge loops by external circuit to series mould set system zero level end 309.In the discharge process; the forced electric discharge protection diode 121 of the basic battery unit 100 of each level prevents that the forced electric discharge of monomer lithium ion battery over-discharge state from producing reversed polarity, the discharge working temperature of the discharge voltage state of discharge voltage observation circuit 112 monitoring monomer lithium ion batteries 130, temperature sensor 123 monitoring monomer lithium ion batteries 130.
The DC charging operation principle of tandem type lithium-ion-power cell group system 300: detect at battery pack central processing unit system 310 and to have external circuit DC charging electric energy, or battery pack central processing unit system 310 connects 302 when receiving charging management and control instruction by outside management and control communication, central processing unit system 310 controlled discharge power electronics control system 312 stop discharge, accept outside DC charging electric energy by holding 301.Outside DC charging electric energy is by end 301, send into dc inversion control circuit 210, dc inversion control circuit 210 is under 310 controls of battery pack central processing unit system, DC charging electric current and magnitude of voltage according to input determine the inversion control parameter, be winding 222 excitations of dc inversion excitation that the AC energy of design specification is sent into electromagnetic transformers 220 with the direct current energy inversion of different voltage magnitudes of input, the multistage bootstrapping secondary winding 224 of electromagnetic transformers 220 is decomposed into the voltage section with the electromagnetic induction electromotive force, rechargeable electrical energy is provided for respectively the basic battery unit 100 of each level of series loop.
The extrapolation AC charging operation principle of tandem type lithium-ion-power cell group system 300: when taking the extrapolation AC energy to serial battery pack system 300 charging, the extrapolation AC energy by input 304 and 305, AC energy input control circuit 211, send into winding 223 excitations of direct AC excitation of electromagnetic transformers 220, the multistage bootstrapping secondary winding 224 of electromagnetic transformers 220 is decomposed into the voltage section with the electromagnetic induction electromotive force, rechargeable electrical energy is provided for respectively the basic battery unit 100 of each level of series loop.When taking the extrapolation AC energy to serial battery pack system 300 charging, serial battery pack system 300 can discharge in charging.
Fig. 6 a-6c is the entity structure schematic diagram of Fig. 5, Fig. 6 a is the entity structure surface schematic diagram of Fig. 5, and when battery pack system work and needs cooling, cooling-air sucks battery pack through filtering air inlet 320, with the internal heat dissipation structures heat exchange after, discharge through exhaust 321.Demonstration and the control system 319 of cascaded lithium ion electrokinetic cell group system 300 can show the parameters such as battery pack operating state, and can inquire about the default and real time information such as battery pack dump energy, cycles left life-span, battery temperature, each unit hardware test result.Fig. 6 b is the entity structure external interface feature schematic diagram of Fig. 5, and total interface takes self-locking device to insert locking.Battery anode output 301 is connected with the battery pack negative pole end and is used for being connected with external circuit, and takes anti-misconnection to take utmost point mechanical structure to prevent the electrode misconnection.Extrapolation AC energy input interface 304 and 305 is used for the access of extrapolation alternating current charging.Outside management and control communication interface 302 is used for and external control management system information interaction.Fig. 6 c is the entity structure internal feature schematic diagram of Fig. 5, each basic battery unit plug-in unit 100 is by installing and radiator structure support 140 and 141 is installed on the battery pack pedestal, and the anodal output interface 101 of the external charging AC energy input interface 104 and 105 by the PCB forme, battery pack internal lan interface 102, the zero level interface 109 of basic battery unit 100, basic battery unit 100 accesses battery pack systems.
Fig. 7 is second embodiment of the invention hybrid type lithium-ion-power cell group system electricity theory diagram, present embodiment is: adopt separately electromagnetic transformers rechargeable electrical energy configuration-system 200 of configuration of each series-connected cell module, consist of hybrid type lithium-ion-power cell group system 400 schemes.
Hybrid type lithium-ion-power cell group system 400 is made of battery pack control and management system and hybrid type battery modules.Battery pack control and management system is comprised of battery pack central processing unit system 410, battery power discharge electric current and voltage and temperature-sensing system 411, discharged power electronic control system 412, reverse blocking circuit 414, demonstration and control system 419, exterior tube control interface circuit 402.The hybrid type battery modules is made of several series-connected cell module 300 parallel connections that comprise separate configurations electromagnetic transformers rechargeable electrical energy configuration-system 200.
The discharge operation principle of hybrid type lithium-ion-power cell group system 400: each series battery 300 of series-parallel connection battery pack system 400 interior parallel connections, form the series connection electromotive force at series-parallel connection battery anode output 401 and 409 at zero level end, ignore under series-connected cell module inhomogeneities and the management and control device pressure drop condition, the output potential of series-parallel connection battery pack system 400 equals the output potential of each series battery 300.Consist of discharge loop in 409 accesses of series-parallel connection battery anode output 401 and zero level end load, discharging current depends on electrical potential difference and the external resistance of 409 at cathode output end 401 and zero level end.During 400 discharge of series-parallel connection battery pack system, the output current parallel connection of each series battery 300 compiles, and total current equals the output current sum of each series battery 300.
The DC charging operation principle of hybrid type lithium-ion-power cell group system 400: detect at battery pack central processing unit system 410 and to have external circuit DC charging electric energy, or battery pack central processing unit system 410 is when receiving charging instruction by outside management and control communication interface 402, central processing unit system 410 controlled discharge power electronics control system 412 stop discharge, accept outside DC charging electric energy by port 401.Outside DC charging electric energy is by port 401, charging steering circuit 415, transfer to each series-connected cell module 300, send into dc inversion control circuit 210 through port 301, dc inversion control circuit 210 is under 310 controls of battery pack central processing unit system, DC charging electric current and magnitude of voltage according to input determine the inversion control parameter, be winding 222 excitations of dc inversion excitation that the AC energy of design specification is sent into electromagnetic transformers 220 with the direct current energy inversion of different voltage magnitudes of input, the multistage bootstrapping secondary winding 224 of electromagnetic transformers 220 is decomposed into the voltage section with the electromagnetic induction electromotive force, balanced charging voltage is provided for respectively the basic battery unit 100 of each level of series loop.
The AC charging operation principle of hybrid type lithium-ion-power cell group system 400: when taking the extrapolation AC energy to 400 charging of series-parallel connection battery pack system, the extrapolation AC energy is through the ac input end mouth 404 and 405 of series-parallel connection battery pack system 400, each series battery 300 ac input end mouth 304 and 305 of input parallel join, AC energy input control circuit 211 by each series battery 300, send into winding 223 excitations of direct AC excitation of the electromagnetic transformers 220 of each series battery 300, the multistage bootstrapping secondary winding 224 of electromagnetic transformers 220 is decomposed into the voltage section with the electromagnetic induction electromotive force, balanced charging voltage is provided for respectively the basic battery unit 100 of each level of series loop.When taking the extrapolation AC energy to 400 charging of series-parallel connection battery pack system, series-parallel connection battery pack system 400 can discharge in charging.
Fig. 8 is the entity structure schematic diagram of Fig. 7, wherein Fig. 8 a is the entity structure surface schematic diagram of Fig. 7, battery pack system 400 cathode output ends 401 and battery pack negative pole end 409 is used for to external load circuit output electric energy, and takes anti-misconnection to take electrode structure to prevent the electrode misconnection.Extrapolation AC energy input interface 404 and 405 is used for the access of extrapolation alternating current charging.Outside management and control communication interface 402 is used for and external control management system information interaction, and the total interface system takes self-locking device to insert locking.Battery pack system is when 400 discharge and recharge work and need cooling, control and management system cools passage is: cooling-air sucks battery pack through filtering air inlet 430 and 431, with the internal heat dissipation structures heat exchange after, discharge (not shown) through rear part exhaust mouth 433.Series-connected cell module system cooling duct is: cooling-air sucks battery pack through filtering air inlet 432, with the internal heat dissipation structures heat exchange after, discharge (not shown) through rear part exhaust mouth 433.The demonstration of series-parallel connection battery pack system 400 and control system 419 can show the parameters such as battery pack operating state, and can inquire about the default and real time information such as battery pack dump energy, residual life, battery pack temperature, unit hardware test result.Fig. 8 b is the entity structure internal feature schematic diagram of Fig. 7, but each serial battery pack system 300 is combined as the independence connect-disconnect structure with supporting electromagnetic transformers rechargeable electrical energy configuration-system 200, be installed on the battery pack system 400 structure pedestals by installation and radiator structure support, and by external charging AC energy input interface 304 and 305, internal lan interface 302, zero level interface 304, anodal output interface 301 access battery pack systems 400.Fig. 8 c, Fig. 8 d is the combined plug-in entity structure schematic diagram of the series-connected cell module system 300 of Fig. 7, some basic battery unit 100 dongle configuration, be installed in by interface and fastener on the combined plug-in entity structure of series-connected cell module system 300, the central processing unit system 310 of series-connected cell module system 300, discharged power electronic control system 312, electromagnetic transformers rechargeable electrical energy configuration-system 200 devices are on the combined plug-in entity structure of series-connected cell module system 300, the cathode output end 301 of the combined plug-in of series-connected cell module system 300, zero level end 309, ac input end 304 and 305, the management and control communication connects 302, by connector access series-parallel connection battery pack system 400.
Electromagnetic transformers rechargeable electrical energy configuration-system 200 dispersed placement in each serial battery pack system 300, are beneficial to structure heat radiation and the engineering test processed of battery pack system.When certain serial battery pack system 300 breaks down, discharge and recharge use but meet an urgent need behind the closing fault serial battery pack system, and the battery pack system output voltage is constant, reduces but charged capacity is corresponding.
Fig. 9 is third embodiment of the invention hybrid type lithium-ion-power cell group system electricity theory diagram, and present embodiment is: all series mould set shares an electromagnetic transformers rechargeable electrical energy configuration-system 200, consists of hybrid type lithium-ion-power cell group system 500 schemes.Hybrid type lithium-ion-power cell group system 500 is made of battery pack control and management system, electromagnetic transformers rechargeable electrical energy configuration-system 200 and hybrid type battery modules.Battery pack control and management system is comprised of battery pack central processing unit system 510, battery power discharge electric current and voltage and temperature-sensing system 511, discharged power electronic control system 512, reverse blocking circuit 514, demonstration and control system 519, exterior tube control interface circuit 502.Electromagnetic transformers rechargeable electrical energy configuration-system 200 is comprised of electromagnetic transformers 220, dc inversion control circuit 210, AC energy access control circuit 211, electromagnetic induction testing circuit 212.Electromagnetic transformers 220 is detected secondary winding 225 and is formed by soft magnetic material iron core 221, winding 222 of dc inversion excitation, direct winding 223 of AC excitation, multistage bootstrapping secondary winding 224, electromagnetic induction.The hybrid type battery modules, the series-connected cell module 520 that is made of several basic battery unit 100 series connection that comprise equal number composes in parallel.
Hybrid type lithium-ion-power cell group system 500 discharge operation principles: cathode output end 521 parallel connections of each series battery 520 in the series-parallel connection battery pack system 500, cathode output end 501 and 509 at zero level end at series-parallel connection battery pack system 500 form the series connection electromotive force, ignore under series-connected cell module inhomogeneities and the management and control device pressure drop condition, the output potential of series-parallel connection battery pack system 500 equals each series battery 520 output potential.Consist of discharge loop at the cathode output end 501 of series-parallel connection battery pack system 500 and 509 accesses of zero level end load, discharging current depends on electrical potential difference and the external resistance of 509 at cathode output end 501 and zero level end.During 500 discharge of series-parallel connection battery pack system, the output current parallel connection of each series battery 520 compiles, and total current equals the output current sum of each series battery 520.
The DC charging operation principle of hybrid type lithium-ion-power cell group system 500: detect by cathode output end 501 at battery pack central processing unit system 510 and to have external circuit DC charging electric energy, or battery pack central processing unit system 510 is when receiving charging instruction by outside management and control communication interface 502, central processing unit system 510 controlled discharge power electronics control system 512 stop discharge, accept outside DC charging electric energy by cathode output end 501.Outside DC charging electric energy is sent into dc inversion control circuit 210 by cathode output end 501, dc inversion control circuit 210 is under 510 controls of battery pack central processing unit system, DC charging electric current and magnitude of voltage according to input determine the inversion control parameter, be winding 222 of dc inversion excitation that the AC energy of design specification is sent into electromagnetic transformers 220 with the direct current energy inversion of different voltage magnitudes of input, the multistage bootstrapping secondary winding 224 of electromagnetic transformers 220 is decomposed into the voltage section with the electromagnetic induction electromotive force, balanced rechargeable electrical energy is provided for respectively the basic battery unit 100 of each series battery 520 corresponding level.
The AC charging operation principle of hybrid type lithium-ion-power cell group system 500: when taking the extrapolation AC energy to 500 charging of series-parallel connection battery pack system, the extrapolation AC energy is through the ac input end mouth 504 and 505 of series-parallel connection battery pack system 500, AC energy input control circuit 211 through electromagnetic transformers rechargeable electrical energy configuration-system 200, winding 223 excitations of the input direct AC excitation of electromagnetic transformers, the multistage bootstrapping secondary winding 224 of electromagnetic transformers is decomposed into the voltage section with the electromagnetic induction electromotive force, balanced rechargeable electrical energy is provided for respectively the basic battery unit 100 of each series battery 520 corresponding level.When taking the extrapolation AC energy to 500 charging of series-parallel connection battery pack system, series-parallel connection battery pack system 500 can discharge in charging.
Figure 10 a-10f is the entity structure schematic diagram of Fig. 9, wherein Figure 10 a is the entity structure surface schematic diagram of Fig. 9, battery pack system 500 is when discharging and recharging work and needing cooling, the cooling duct of battery pack control and management system and electromagnetic transformers rechargeable electrical energy configuration-system 200 is: cooling-air sucks battery pack through filtering air inlet 530 and 531, with the internal heat dissipation structures heat exchange after, discharge (not shown) through rear part exhaust mouth 533.Series-connected cell module system cooling duct is: cooling-air sucks battery pack through filtering air inlet 532, with the internal heat dissipation structures heat exchange after, discharge (not shown) through rear part exhaust mouth 533.The demonstration of series-parallel connection battery pack system 500 and control system 519 can show the parameters such as battery pack operating state, and can inquire about the default and real time information such as battery pack dump energy, cycles left life-span, battery pack temperature, each unit hardware test result.Figure 10 b, 10c are the entity structure internal feature schematic diagram of Fig. 9, and electromagnetic transformers rechargeable electrical energy configuration-system 200, each series battery 520 are installed on the battery pack system 500 structure pedestals by structure directing and cooling stand.But each series battery 520 is independent connect-disconnect structure, and each interface is by connector access series-parallel connection battery pack system 500.The AC charging electric energy at different levels of multistage bootstrapping secondary winding 224 output of electromagnetic transformers 220 access the basic battery unit 100 of corresponding level of each series battery 520 by connector.Figure 10 d is the external interface entity structure feature schematic diagram of Fig. 9, and the cathode output end 501 of battery pack system 500 and zero level end 509 are used for to external load circuit output electric energy, and takes anti-misconnection to take electrode structure to prevent the electrode misconnection.Extrapolation AC energy input interface 504 and 505 is used for the access of extrapolation alternating current charging.Outside management and control communication interface 502 is used for and external control management system information interaction, and the total interface system takes screw-threaded coupling device, will insert the connector locking of interface by retaining mechanism 540.Figure 10 e, Figure 10 f are the entity structure schematic diagram of the series-connected cell module 520 of Fig. 9, series-connected cell module 520 is assembled into dongle configuration by battery modules and the structure stand that some basic battery units 100 are composed in series, the cathode output end 521 of series-connected cell module 520, zero level end 509, management and control bus interface 522, the basic battery unit 100 charging input interface 52n of each level are by connector access series-parallel connection battery pack system 500.
Adopt whole series mould set to share an electromagnetic transformers rechargeable electrical energy configuration-system 200, can simplify the series mould set system, reduce the volume and weight of series mould set.And owing to the theoretical work life-span of electromagnetic transformers rechargeable electrical energy configuration-system 200 is higher than lithium ion battery, thus electromagnetic transformers rechargeable electrical energy configuration-system 200 is shared, be conducive to production and the maintenance of battery pack system.
In sum, lithium-ion-power cell group system provided by the invention, balanced charging voltage can be provided to the basic battery unit of each level of series mould set, and the charging voltage that each basic battery unit 100 obtains is substantially equal, and can be in the basis of satisfying minimum charging voltage be controlled at the amplitude range of less, the rectification of basic battery unit 100 and the operating voltage that the voltage stabilizing circuit device bears have been reduced thus, thereby reduced the cost of battery pack system, and the quoting and the compatible adaptive good technological approaches that provides of various alternating current-direct current charge power supplies is provided, especially be fit to many cells combinations, large capacity, the lithium-ion-power cell group system of high voltage output.
The above; it only is preferred embodiment of the present invention; for the person of ordinary skill of the art, can make other various corresponding changes and distortion according to technical scheme and the technical conceive of this aspect, and all these changes and distortion all should belong to the protection range of claim of the present invention.

Claims (8)

1. the charging method of a lithium-ion-power cell group is characterized in that, comprising:
Step 1 independently discharges and recharges control unit with the monomer lithium ion battery access, consists of basic battery unit;
Step 2 with some basic battery unit series connection or series-parallel connection, consists of battery modules;
Step 3 arranges electromagnetic transformers rechargeable electrical energy configuration-system, and the multistage bootstrapping secondary winding by electromagnetic transformers is decomposed into the voltage section with the electromagnetic induction electromotive force, balanced charging voltage is provided for respectively the basic battery unit of each level of series-connected cell module;
Step 4, independently discharge and recharge the control unit networking by battery pack control and management system and each basic battery unit, consist of the inner distributed local control and management of battery pack system, realize the control and management that discharges and recharges of battery pack, and the condition of work that discharges and recharges of all monomer lithium ion batteries is carried out management and control and protection;
In the step 3, described electromagnetic transformers rechargeable electrical energy configuration-system comprises: electromagnetic transformers, dc inversion control system, interchange input control system, electromagnetic induction detection system; Described electromagnetic transformers comprises: soft magnetic material is unshakable in one's determination, winding, secondary winding; Winding of described electromagnetic transformers comprises: winding of dc inversion excitation, direct winding of AC excitation; The secondary winding of described electromagnetic transformers comprises: multistage bootstrapping secondary winding, electromagnetic induction detect secondary winding.
2. the charging method of lithium-ion-power cell group as claimed in claim 1 is characterized in that, described step 2 comprises: with some basic battery unit series connection, consist of the series-connected cell module; Some series-connected cell modules are in parallel, consist of the series-parallel connection battery modules.
3. the charging method of lithium-ion-power cell group as claimed in claim 1, it is characterized in that, described step 3 comprises: step 3.1, described dc inversion control system, different voltage magnitude DC charging electric energy with the external circuit submission, inversion is regulated and control to winding of dc inversion excitation of the AC energy input electromagnetic transformers of design specification, and passes through the detection data adjustment inversion control parameter that the electromagnetic induction detection system is submitted to; Described interchange input control system is with winding of direct AC excitation of the AC energy access electromagnetic transformers of input; Step 3.2, the multistage bootstrapping secondary winding of described electromagnetic transformers is decomposed into the electromagnetic induction electromotive force and the corresponding voltage section of each level of series-connected cell module, balanced charging voltage is provided for respectively the basic battery unit of each level of series loop; The electromagnetic induction of described electromagnetic transformers detects secondary winding, submits the electromagnetic induction sense potential sample of electromagnetic transformers system control to for the electromagnetic induction detection system; Respectively the connect basic battery unit of level of step 3.3, described series-connected cell module, the corresponding level winding from the multistage bootstrapping secondary winding of electromagnetic transformers obtains rechargeable electrical energy respectively, and charges to monomer lithium ion battery by preset charged management and control program; Step 3.4, described series-parallel connection battery modules electromagnetic transformers configuration mode is taked separately electromagnetic transformers pattern of configuration of each series-connected cell module, or is taked a plurality of series-connected cell modules to share the pattern of an electromagnetic transformers; Taking each series-connected cell module to dispose separately under the electromagnetic transformers pattern, this series-connected cell module respectively connect level basic battery unit respectively from this series-connected cell module separately the corresponding level winding of the multistage bootstrapping secondary winding of the electromagnetic transformers of configuration obtain rechargeable electrical energy, and charge to monomer lithium ion battery by preset charged management and control program; Taking a plurality of series-connected cell modules to share under the pattern of an electromagnetic transformers, the basic battery unit of same level of each series-connected cell module obtains rechargeable electrical energy from the corresponding level winding of the multistage bootstrapping secondary winding of the electromagnetic transformers that shares jointly, and respectively by the monomer lithium ion battery charging of default charging management and control program to separately management and control.
4. the charging method of lithium-ion-power cell group as claimed in claim 1, it is characterized in that, described step 4 comprises: step 4.1, battery pack control and management system and each basic battery unit independently discharge and recharge the control unit networking, consist of the inner distributed local control and management of battery pack system, described battery pack control and management system comprises: central processing unit system, electric current and voltage and temperature-sensing system, the power electronics control system, show and control system, the external communication interface system is filled with battery set charge/discharge management and control program in described central processing unit system or the memory device that connects, System Programming information and basic data library, networks trategy and node management and control program, external call function and management and control program; Step 4.2, described battery pack control and management system and each basic battery unit independently discharge and recharge control unit, set up the communication of management and control instruction and data by the battery pack internal lan, realize that with the management and control strategy of default control hypervisor the mode of operation of battery pack and all monomer lithium ion batteries being discharged and recharged condition of work carries out management and control and protection; Step 4.3, described battery pack control and management system sets up the communication of management and control instruction and data by external communication interface and outside control-management system, and the external call interface protocol is SBS, CAN or self-defining interface communication protocol; Described external communication interface is SBS, CAN or self-defining external data communication interface.
5. a right to use requires the lithium-ion-power cell group system of the charging method of 1 described lithium-ion-power cell group, it is characterized in that, described lithium-ion-power cell group system comprises: the battery modules that some basic battery unit series connection or series-parallel connection consist of, battery pack control and management system, electromagnetic transformers rechargeable electrical energy configuration-system, the battery pack structure support, housing and heat radiation cooling system, described heat radiation cooling system and battery pack control and management system are installed on the battery pack structure support, described battery modules and electromagnetic transformers rechargeable electrical energy configuration-system are that detachable dongle configuration is installed on the described battery pack structure support, or electromagnetic transformers rechargeable electrical energy configuration-system is installed on the described battery pack structure support, battery modules is combined as detachable dongle configuration is installed on the described battery pack structure support.
6. lithium-ion-power cell group system as claimed in claim 5, it is characterized in that, described basic battery unit comprises: monomer lithium ion battery, independently discharge and recharge PCB, installation and the radiator structure support that each electronic circuit system of control unit forms, and structurally combination is assembled together, locating support and interface by structural framing, be installed in the lithium-ion-power cell group, described monomer lithium ion battery and independently discharge and recharge control unit, structurally be packaged together, perhaps separate.
7. lithium-ion-power cell group system as claimed in claim 5 is characterized in that, the AC power of an adaptive input of winding of described direct AC excitation comprises: the alternating current that the alternating current that all kinds of alternating current generators send, all kinds of electronic system are sent.
8. lithium-ion-power cell group system as claimed in claim 5, it is characterized in that, the configuration mode of the electromagnetic transformers rechargeable electrical energy configuration-system of described lithium-ion-power cell group system, take separately electromagnetic transformers rechargeable electrical energy configuration-system of configuration of each series mould set, or take a plurality of series mould set to share the pattern of an electromagnetic transformers rechargeable electrical energy configuration-system.
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