CN103956804B - The supper-fast charging system of electric automobile lead-acid accumulator - Google Patents

The supper-fast charging system of electric automobile lead-acid accumulator Download PDF

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CN103956804B
CN103956804B CN201410205191.5A CN201410205191A CN103956804B CN 103956804 B CN103956804 B CN 103956804B CN 201410205191 A CN201410205191 A CN 201410205191A CN 103956804 B CN103956804 B CN 103956804B
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energy
unit
lead
module
current
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CN103956804A (en
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于国庆
李永伟
孟志永
马洪涛
叶娜
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Hebei Huayou cultural heritage protection Co., Ltd
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Hebei University of Science and Technology
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Abstract

The supper-fast charging system of electric automobile lead-acid accumulator, electrical network input block exports after the alternating current of electrical network is converted into unidirectional current and is filtered to energy sink unit, lead-acid batteries is charged by energy sink unit by current control unit, battery management unit is connected with center processing unit by electrical parameters detection unit, the state-of-charge of joint accumulator each in lead-acid batteries is detected and is made by regulation electric energy the state-of-charge of each joint accumulator in lead-acid batteries keep consistent by battery management unit, the parameter information of the lead-acid batteries detected is fed back to center processing unit by electrical parameters detection unit, center processing unit exports control signal respectively to energy sink unit and current control unit after processing.In very short time, (9~15min) are charged to the 80% of lead-acid batteries rated capacity, shorten the charging interval, can reduce large current charge system to the harmonic pollution of line voltage and energy impact simultaneously.

Description

The supper-fast charging system of electric automobile lead-acid accumulator
Technical field
The invention belongs to charger technical field, relate to a kind of charging system, the most electronic vapour The supper-fast charging system of car lead-acid accumulator.
Background technology
Due to the continuous consumption of whole world non-renewable energy resources, new forms of energy vapour is all being advocated energetically in countries in the world The development and application of car.The most domestic new-energy automobile mainly has alternative fuel vehicle, electric automobile And fuel cell car three kinds.Wherein Development of Electric Vehicles is the most ripe, has been basically completed industrialization Prepare, preliminarily formed the industrial chain of electric automobile.The power accumulator relevant to electric automobile is from material Material is broadly divided into lead-acid accumulator and lithium-ions battery two kinds, wherein lead-acid accumulator application on constituting History length, technology maturation, with low cost, and the internal structure of lead-acid accumulator updates, Service life is continuously increased, and occupies most proportion in electric automobile industry.
The factor affecting lead-acid accumulator quick charge characteristic is the most, such as the internal junction of lead-acid accumulator Structure, charging system and network load etc., but charging current is that to affect of quick charge characteristic important Factor, in order to shorten the charging interval, improves charging rate, it is necessary to strengthen charging current value, but Lead-acid accumulator can occur water decomposition to react in charging process, and positive pole produces oxygen, and negative pole produces hydrogen Gas, oxygen is absorbed by negative pole by barrier film and air chamber, and intrinsic pressure due to sealed lead-acid accumulator is Limited, so the infiltration rate of negative pole is also limited, if charging current value is too high, positive pole produces The excessive velocities of raw oxygen, the infiltration rate of negative pole does not catches up with the speed that oxygen produces, long-time after meeting Cause the failure phenomenons such as lead-acid accumulator dehydration, the induction micro-short circuit of lead-acid accumulator, sulphation, damage The quality of evil lead-acid accumulator and service life, the polarization meeting of lead-acid accumulator during two-forty charging simultaneously Cause the pressure within lead-acid accumulator to rise, lead-acid accumulator temperature rises, lead-acid accumulator internal resistance Rise high, not only can shorten service life of lead accumulator, and likely lead-acid accumulator be caused forever Property injury, make the receivable charging current of lead-acid accumulator decline so that it is to fill less than rated capacity.Institute Charging interval with current lead-acid accumulator is the longest, with fuel-engined vehicle refuel time cannot compared with, and The impact of electrical network is affected very big by high-power charging, is one of Main Bottleneck restricting Development of Electric Vehicles. Summary of the invention
The present invention, in order to overcome the defect of prior art, devises electric automobile lead-acid accumulator supper-fast Charging system, it is achieved that the early stage deposit of electric energy, it is possible to current control unit is exported the big of electric current Little it is adjusted, such that it is able to reach in very short time (9~15min) to be charged to lead-acid batteries volume The 80% of constant volume, substantially reduces the charging interval, can reduce large current charge system to electricity simultaneously The harmonic pollution of net voltage and energy impact, improve the utilization rate of electric energy, saves energy.
Concrete technical scheme of the present invention is: the supper-fast Charging of electric automobile lead-acid accumulator System, it is important to: described charging system includes that the electrical network input block being connected with electrical network and plumbic acid store The battery management unit of set of cells connection, center processing unit, electrical network input block is by the exchange of electrical network Electricity exports to energy sink unit after being converted into unidirectional current and being filtered, energy sink unit passes through electric current control Lead-acid batteries is charged by unit processed, battery management unit by electrical parameters detection unit with in Heart processing unit connects, and battery management unit is to state-of-charge saving accumulator each in lead-acid batteries Carry out detecting and making the state-of-charge of each joint accumulator in lead-acid batteries keep one by regulation electric energy Causing, the parameter information of the lead-acid batteries detected is fed back to center processing by electrical parameters detection unit Unit, center processing unit exports control signal respectively and controls single to energy sink unit and electric current after processing Unit.
The invention has the beneficial effects as follows: utilize energy sink unit to achieve the early stage deposit of electric energy, utilize Electrical parameters detection unit can detect the electrical quantity of lead-acid batteries in real time and feed back to center processing list Unit, the size of current control unit output electric current is adjusted, such that it is able to reach by center processing unit It is charged to the 80% of lead-acid batteries rated capacity in very short time (9~15min), is greatly shortened Charging interval.
Commutator the alternating current of electrical network is converted into unidirectional current and is filtered after through PFC Pfc circuit exports to energy sink unit, and PFC pfc circuit can reduce line loss, Reduce large current charge system to the harmonic pollution of line voltage and energy impact, improve the utilization of electric energy Rate, saves energy.
Energy sink module is buffer-type DC source, can be that charging system provides super large charging current, Parameters in energy sink module charge and discharge process can be adjusted by energy storage module, with satisfied reality Border demand.
The parameter information of the lead-acid batteries that electrical parameters detection unit detects include battery tension, Battery current, battery temp, storage battery charge state and locking information, center processing unit will These parameter informations are (single with characteristics algorithm according to its feature structure (battery porous electrode theoretical model) Polar impulse control algolithm) it is analyzed processing, with current spikes and frequency analysis identification plumbic acid The state-of-charge of accumulator battery, the dynamic parameter such as activation overvoltage, overpotential, internal resistance, formed double anti- Infeed mechanism, dynamically adjusts energy storage module and the energy sink module of energy sink unit, and output control simultaneously refers to Make to current control unit, adjust the size of current control unit output electric current.
Center processing unit includes electrical quantity processing module, control module, accumulation of energy management module, energy Database management module, energy storage module is connected with accumulation of energy management module, and energy sink module manages mould with energy sink Block connects, the electrical quantity processing module parameter to the lead-acid batteries that electrical parameters detection unit detects Information carries out processing and result being fed back to control module, and control module exports respectively after processing and controls letter Number to accumulation of energy management module, energy database management module and current control unit.
Energy sink module is super capacitor or batteries in parallel connection group, and the advantage of super capacitor is: charging rate Hurry up;Service life cycle is long, and degree of depth charge and discharge cycles access times, up to 1~500,000 time, do not have " note Recall effect ";Large current discharging capability is superpower, and energy conversion efficiency is high, and big current energy cycle efficieny >= 90%;Power density is high, up to 300~5000W/KG;Raw-material composition, produce, use, Store and process of disassembling the most is not polluted, be preferable environmental protection power supply;Discharge and recharge circuit is simple, Safety coefficient is high, and life-time service is non-maintaining.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the present invention.
In accompanying drawing, 1-1 represents commutator, and 1-2 represents PFC pfc circuit, and 2 represent electricity Pond administrative unit, 3-1 represents energy storage module, and 3-2 represents energy sink module, and 4 represent electric current controls single Unit, 5 represent electrical parameters detection unit, and 6-1 represents electrical quantity processing module, and 6-2 represents control module, 6-3 represents accumulation of energy management module, and 6-4 represents energy database management module, and 7 represent lead-acid batteries, and 8 Represent electrical network.
Detailed description of the invention
The supper-fast charging system of electric automobile lead-acid accumulator, it is important to: described charging system includes Battery management unit 2 that the electrical network input block being connected with electrical network 8 is connected with lead-acid batteries 7, Center processing unit, the alternating current of electrical network 8 is converted into unidirectional current and is filtered by electrical network input block Rear output is to energy sink unit, and energy sink unit passes through current control unit 4 to lead-acid batteries 7 Being charged, battery management unit 2 is connected with center processing unit by electrical parameters detection unit 5, The state-of-charge of joint accumulator each in lead-acid batteries 7 is detected and leads to by battery management unit 2 Overregulating electric energy makes the state-of-charge of each joint accumulator in lead-acid batteries 7 keep consistent, electrical quantity The parameter information of the lead-acid batteries 7 detected is fed back to center processing unit by detector unit 5, Center processing unit exports control signal respectively to energy sink unit and current control unit 4 after processing.
Described electrical network input block includes that the commutator 1-1 being connected with electrical network 8 and commutator 1-1 connects The alternating current of electrical network 8 is converted into direct current by the PFC pfc circuit 1-2, commutator 1-1 that connect Electricity also exports to energy sink unit through PFC pfc circuit 1-2 after being filtered.
Described energy sink unit includes energy storage module 3-1 and the accumulation of energy mould being connected with electrical network input block Energy sink module 3-2 that block 3-1 connects, current control unit 4 is connected with energy sink module 3-2, stores Energy module 3-1 and energy sink module 3-2 are all connected with center processing unit.
The parameter information of the lead-acid batteries 7 that described electrical parameters detection unit 5 detects includes storing Cell voltage, battery current, battery temp, storage battery charge state and locking information.
Described center processing unit includes electrical quantity processing module 6-1, control module 6-2, accumulation of energy pipe Reason module 6-3, energy database management module 6-4, energy storage module 3-1 is connected with accumulation of energy management module 6-3, Energy sink module 3-2 is connected with energy database management module 6-4, and electrical quantity processing module 6-1 is to electrical quantity The parameter information of the lead-acid batteries 7 that detector unit 5 detects carries out processing and result being fed back to Control module 6-2, control module 6-2 process after export respectively control signal to accumulation of energy management module 6-3, Energy database management module 6-4 and current control unit 4.
Described energy sink module 3-2 is super capacitor or batteries in parallel connection group.
The present invention is in the specific implementation: electrical parameters detection unit 5 is by lead-acid batteries 7 to be charged Battery tension, battery current, battery temp, storage battery charge state and locking information anti- Feeding electrical quantity processing module 6-1 in center processing unit, electrical quantity processing module 6-1 is according to these The feature structure (battery porous electrode theoretical model) of parameter information and characteristics algorithm (unipolarity arteries and veins Rush control algolithm) it is analyzed processing, when meeting charge condition, commutator 1-1 is by the friendship of electrical network 8 Stream electricity exports to energy through PFC pfc circuit 1-2 after being converted into unidirectional current and being filtered Energy sink module 3-2 is charged after processing by the energy storage module 3-1 in library unit, energy storage module 3-1, Lead-acid batteries 7 is charged by energy sink module 3-2 by current control unit 4, electrical quantity Processing module 6-1 with current spikes and the state-of-charge of frequency analysis identification lead-acid batteries, The dynamic parameters such as activation overvoltage, overpotential, internal resistance, form double feedback mechanism, pass through accumulation of energy respectively Management module 6-3 and energy database management module 6-4 dynamically adjust the energy storage module 3-1 in energy sink unit With energy sink module 3-2, and export control instruction to current control unit 4, adjust current control unit The sizes of 4 output electric currents, can effectively prevent micro-short circuit, sulfur that lead-acid batteries 7 dehydration caused The generation of the failure phenomenons such as acidifying, prevents the pressure within lead-acid batteries 7 from rising, lead acid storage battery Pond group 7 temperature rises, lead-acid batteries 7 internal resistance raises, without compromising on to lead-acid batteries 7 Quality, the service life of lead-acid batteries 7 can be extended so that it is can be charged to specified rapidly The 80% of capacity.

Claims (3)

1. the supper-fast charging system of electric automobile lead-acid accumulator, it is characterised in that: described Charging System includes the electricity that the electrical network input block being connected with electrical network (8) is connected with lead-acid batteries (7) Pond administrative unit (2), center processing unit, the alternating current of electrical network (8) is changed by electrical network input block Exporting to energy sink unit after becoming unidirectional current and being filtered, energy sink unit passes through current control unit (4) being charged lead-acid batteries (7), battery management unit (2) passes through electrical parameters detection Unit (5) is connected with center processing unit, and battery management unit (2) is to lead-acid batteries (7) In the state-of-charge of each joint accumulator carry out detecting and being made in lead-acid batteries (7) by regulation electric energy The state-of-charge of each joint accumulator keeps consistent, and the plumbic acid detected is stored by electrical parameters detection unit (5) The parameter information of set of cells (7) feeds back to center processing unit, and center processing unit is the most defeated after processing Go out control signal to energy sink unit and current control unit (4);
Described electrical network input block includes commutator (1-1) and the commutator being connected with electrical network (8) (1-1) the PFC pfc circuit (1-2) connected, commutator (1-1) is by electrical network (8) Alternating current be converted into unidirectional current and be filtered after through PFC pfc circuit (1-2) export To energy sink unit;
The parameter information of the lead-acid batteries (7) that described electrical parameters detection unit (5) detects Including battery tension, battery current, battery temp, storage battery charge state and locking information;
Described energy sink unit includes the energy storage module (3-1) being connected with electrical network input block and stores The energy sink module (3-2) that energy module (3-1) connects, current control unit (4) and energy sink module (3-2) connecting, energy storage module (3-1) and energy sink module (3-2) are all with center processing unit even Connect.
The supper-fast charging system of electric automobile lead-acid accumulator the most according to claim 1, it is special Levy and be: described center processing unit include electrical quantity processing module (6-1), control module (6-2), Accumulation of energy management module (6-3), energy database management module (6-4), energy storage module (3-1) and accumulation of energy pipe Reason module (6-3) connects, and energy sink module (3-2) is connected with energy database management module (6-4), The lead-acid batteries (7) that electrical parameters detection unit (5) is detected by electrical quantity processing module (6-1) Parameter information carry out processing and result being fed back to control module (6-2), control module (6-2) place Export respectively after reason control signal to accumulation of energy manage module (6-3), energy database management module (6-4) and Current control unit (4).
The supper-fast charging system of electric automobile lead-acid accumulator the most according to claim 2, it is special Levy and be: described energy sink module (3-2) is super capacitor or batteries in parallel connection group.
CN201410205191.5A 2014-05-15 2014-05-15 The supper-fast charging system of electric automobile lead-acid accumulator Active CN103956804B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102163860A (en) * 2011-05-09 2011-08-24 上海三玖电气设备有限公司 Quick charging system formed by super capacitor
CN102355039A (en) * 2011-09-30 2012-02-15 广东工业大学 Totally-digitalized high-efficient multi-frequency quick charging power supply
CN103326439A (en) * 2013-06-28 2013-09-25 安科智慧城市技术(中国)有限公司 Equalization circuit of battery pack and equalization method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090043520A1 (en) * 2006-08-10 2009-02-12 V2Green, Inc. User Interface and User Control in a Power Aggregation System for Distributed Electric Resources

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102163860A (en) * 2011-05-09 2011-08-24 上海三玖电气设备有限公司 Quick charging system formed by super capacitor
CN102355039A (en) * 2011-09-30 2012-02-15 广东工业大学 Totally-digitalized high-efficient multi-frequency quick charging power supply
CN103326439A (en) * 2013-06-28 2013-09-25 安科智慧城市技术(中国)有限公司 Equalization circuit of battery pack and equalization method

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Effective date of registration: 20190305

Address after: 050000 room 20-901, Century Garden East 75, Donggang Road, Yuhua, Shijiazhuang, Hebei

Patentee after: Hebei Hua Yougu construction engineering Limited by Share Ltd

Address before: 050000 Information College of Hebei University of Science and Technology, 26 Yuxiang Street, Shijiazhuang City, Hebei Province

Patentee before: Hebei University of Science and Technology

Effective date of registration: 20190305

Address after: 050000 room 20-901, Century Garden East 75, Donggang Road, Yuhua, Shijiazhuang, Hebei

Patentee after: Hebei Hua Yougu construction engineering Limited by Share Ltd

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Address after: 050000 Hebei Province, Shijiazhuang city Yuhua District Donggang Road No. 75 East Century Garden Room 20-901

Patentee after: Hebei Huayou cultural heritage protection Co., Ltd

Address before: 050000 Hebei Province, Shijiazhuang city Yuhua District Donggang Road No. 75 East Century Garden Room 20-901

Patentee before: HEBEI H.&Y. ANCIENT BUILDING ENGINEERING Co.,Ltd.