CN106080240A - A kind of sub-batter-charghing system of power lithium battery used for electric vehicle - Google Patents
A kind of sub-batter-charghing system of power lithium battery used for electric vehicle Download PDFInfo
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- CN106080240A CN106080240A CN201610521952.7A CN201610521952A CN106080240A CN 106080240 A CN106080240 A CN 106080240A CN 201610521952 A CN201610521952 A CN 201610521952A CN 106080240 A CN106080240 A CN 106080240A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 20
- 238000007600 charging Methods 0.000 claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000011217 control strategy Methods 0.000 claims description 7
- 238000010277 constant-current charging Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000010281 constant-current constant-voltage charging Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010278 pulse charging Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- H02J7/0021—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
A kind of sub-batter-charghing system of power lithium battery used for electric vehicle, uses constant-current constant-voltage charging mode, has carried out charge controller main circuit design, uses the Zero-voltage soft switch pwm circuit of band clamp diode as main circuit.Transformator primary side introduces resonant inductanceR LAnd clamp diode, effectively overcome the due to voltage spikes phenomenon that output rectifier tube Reverse recovery is caused.Devising digitial controller for charge control system, algorithm is easily designed, and capacity of resisting disturbance strengthens.Prevent regulated quantity from suddenling change for guarantee system in constant voltage, constant current handoff procedure, using the mode implementation pattern switching calculating regulated quantity, designed charge controller can obtain preferable stable state accuracy, and system output ripple is little, switching is smooth, can well realize charging and discharging lithium battery.
Description
The present invention relates to electric and electronic technical field, be specifically related to the design of lithium ion battery charging system, be mainly used in
Electric automobile energy supplies.
Background technology
Conventional fuel oil environmental pollution by automobiles is serious, and energy consumption is too high, and the environment and the energy problem that cause are the most increasingly serious, cause
The extensive concern of people and worry.Electric automobile has certain advantage in terms of energy-saving and environmental protection, progressively becomes auto industry and sends out
The trend of exhibition.The energy resource supply Facilities Construction matched with Development of Electric Vehicles is the base of electric automobile further genralrlization and application
Plinth.Application lithium-ion-power cell as charging system, find suitable capacity injection technique become electric automobile research ask
The key of topic.Lithium battery has high-energy-density, and the life-span is long, safe and reliable, and charging/discharging voltage is stable, obtains on electric automobile
Extensive application.Application low current charge method can effectively reduce charges to its aging effects, but the longest, charge efficiency mistake
Low, be not suitable for electric automobile application.Use large current pulse charging, electric energy can be realized and be rapidly injected, but due to lithium battery
Internal resistance affects, and charging terminal voltage yet battery virtual condition is not inconsistent, and battery is often in deficient electricity condition so that it is utilization rate reduces.Have
In consideration of it, this patent proposes a kind of sub-batter-charghing system of power lithium battery used for electric vehicle, use constant-current constant-voltage charging mode,
Carry out charge controller main circuit design and Design of Digital Controller, achieved constant pressure and flow by switching control and switch,
Designed charge controller can obtain preferable stable state accuracy, and system output ripple is little, and switching is smooth, can well realize
Charging and discharging lithium battery.
Summary of the invention
It is an object of the invention to provide a kind of sub-batter-charghing system of power lithium battery used for electric vehicle, this system uses perseverance
Stream constant pressure control system, concrete control strategy, as it is shown in figure 1, detect cell voltage and electric current in real time, works as battery-end
Voltage is less than VLTime, carry out trickle charge, when cell voltage reaches VLAfter, proceed to constant-current charging phase, when voltage rises to VH
After, use constant-voltage charge pattern, until battery is fully charged.
Charge power supply main circuit uses the Zero-voltage soft switch pwm circuit of band clamp diode, as shown in Fig. 2, wherein
Q1-Q4 is main switch, selects the MOSFET that switching frequency is higher, uses ZVT, and transformator primary side introduces resonance
Inductance LRAnd clamp diode, D&D8, effectively overcome the due to voltage spikes phenomenon that output rectifier tube Reverse recovery is caused, transformator
Secondary side uses all wave rectification output.
Charging controls to use digitial controller to realize, so that systematic control algorithm is easily designed, capacity of resisting disturbance strengthens,
Designed discrete control system is as shown in Figure 3.This control system is mainly by voltage x current input, mode selection switch, voltage
Current controller, controlled device transmission function etc. is constituted, and realizes Isobarically Control and constant current control respectively by Voltage loop and electric current loop
System strategy.At constant-current charging phase, it is output electric current that system controls target, and in the Isobarically Control stage, system is with output voltage for control
Target processed.In order to ensure that system prevents regulated quantity from suddenling change in constant voltage, constant current handoff procedure, use the mode calculating regulated quantity real
Existing pattern switching, its specific works principle is: output regulated quantity u of system computing controller simultaneouslyv(k) and ui(k), wherein, uv
K () is voltage-regulation amount, uiK () is current adjustment, when needs charging switching, compare the size of two regulated quantitys, when full
Foot ui(k)≥uvK, time (), system enters switching state.
Accompanying drawing explanation
Fig. 1 charges control strategy figure；
Fig. 2 charge power supply main circuit diagram；
Fig. 3 discrete control system structure chart；
Detailed description of the invention
It is better understood when the present invention program, ginseng below to make to be engaged in electric car charger design person skilled
According to accompanying drawing, embodiment of the present invention is described in detail.
See Fig. 1, present system provides charging control strategy figure, illustrate lithium ion battery charging system used for electric vehicle
The constant current constant voltage control mode used, concrete charging control process by startup stage, constant-current phase and constant-voltage phase form.
When concrete operations, need, by voltage and current sensor, cell voltage and electric current to be detected in real time, when battery-end electricity
Pressure is less than VLTime, carry out trickle charge, when cell voltage reaches VLAfter, proceed to constant-current charging phase, when voltage rises to VHAfter,
Use constant-voltage charge pattern, until battery is fully charged.Charging control strategy is mainly used in real system, is compiled by software
Journey, it is achieved the switching signal of main circuit switch element, thus implement charging strategy.
Seeing Fig. 2, give charge power supply main circuit diagram, the concrete topological structure that this charge power supply main circuit uses is
With the Zero-voltage soft switch pwm circuit of clamp diode, Q1-Q4 is main switch, forms bridge circuit, and wherein Q1, Q4 are one
To brachium pontis, Q3, Q2 are a pair brachium pontis, each switching tube element two ends anti-paralleled diode, it is also possible to directly use IGBT or phase
Pass module realizes.In the present system, selecting the MOSFET that switching frequency is higher, devise charging device, element switch frequency is
50KHz, input voltage is 520V, uses ZVT mode.Transformator primary side introduces resonant inductance LRWith clamper two pole
Pipe DR1、DR2, effectively overcoming the due to voltage spikes phenomenon that output rectifier tube Reverse recovery is caused, Circuit Fault on Secondary Transformer uses all-wave
Rectification exports, and transformer turns ratio is 18:5, and resonant inductance is LR=20 μ H, filter inductance is Lf=100 μ H, filter capacitor is Cf
=10 μ F.
Seeing Fig. 3, give discrete control system structure chart, charging controls to use digitial controller to realize, mainly by electricity
Current voltage input, mode selection switch, voltage x current controller, controlled device transmission function etc. are constituted, by Voltage loop and electricity
Stream ring realizes Isobarically Control and current constant control strategy respectively.G in systemv(z) and GcZ () is voltage controller and current controller
Discrete transfer function, ZOH is zero-order holder model, FmFor the transmission function of PWM link, GidS () is that dutycycle arrives output
Transmission function between electric current, H2、H1For current feedback transmission function and Voltage Feedback transmission function.At constant-current charging phase, it is
It is output electric current that system controls target, and in the Isobarically Control stage, system is with output voltage for controlling target.In order to ensure that system is in perseverance
Preventing regulated quantity from suddenling change in pressure, constant current handoff procedure, use the mode implementation pattern switching calculating regulated quantity, its specific works is former
Reason is: output regulated quantity u of system computing controller simultaneouslyv(k) and ui(k), wherein, uvK () is voltage-regulation amount, ui(k) be
Current adjustment, when needs charging switching, compares the size of two regulated quantitys, when meeting ui(k)≥uvK, time (), system enters
Switching state.According to the main circuit designed by system and digital control unit, constant pressure and flow control mode is used to be charged,
Can obtain preferable stable state accuracy, system output ripple is little, and switching is smooth, can realize lithium battery good discharge and recharge effect.
Above content is to combine the detailed description that the present invention is done by optimal technical scheme, it is impossible to assert the concrete real of invention
Execute and be only limitted to these, for the simple deduction made under without departing from inventive concept premise and replacement, all should be considered as this
Bright protection domain.
Claims (10)
1. the sub-batter-charghing system of power lithium battery used for electric vehicle, it is characterised in that: system gives charging control strategy
Figure, uses constant current constant voltage control mode to be charged.
The sub-batter-charghing system of one the most according to claim 1 power lithium battery used for electric vehicle, the charging of this system controls
Process by startup stage, constant-current phase and constant-voltage phase form.
3. according to the sub-batter-charghing system of power lithium battery used for electric vehicle of the one described in claim 1 or 2, it is characterised in that:
During concrete operations, need, by voltage and current sensor, cell voltage and electric current to be detected in real time, works as battery terminal voltage
Less than VLTime, carry out trickle charge, when cell voltage reaches VLAfter, proceed to constant-current charging phase, when voltage rises to VHAfter, adopt
Use constant-voltage charge pattern, until battery is fully charged.
4. according to the sub-batter-charghing system of power lithium battery used for electric vehicle of the one described in claim 1, it is characterised in that: be given
Charge power supply main circuit diagram, the Zero-voltage soft that concrete topological structure is band clamp diode that this charge power supply main circuit uses
Switch PWM circuit.
5. according to the sub-batter-charghing system of power lithium battery used for electric vehicle of the one described in claim 4, it is characterised in that: Q1-
Q4 is main switch, forms bridge circuit, and wherein Q1, Q4 are a pair brachium pontis, and Q3, Q2 are a pair brachium pontis, each switching tube element
Two ends anti-paralleled diode, it is also possible to directly use IGBT or correlation module to realize.
6. according to the sub-batter-charghing system of power lithium battery used for electric vehicle of the one described in claim 4 or 5, it is characterised in that:
Transformator primary side introduces resonant inductance LRAnd clamp diode, effectively overcome the voltage that output rectifier tube Reverse recovery is caused
Spike phenomenon.
7. according to the sub-batter-charghing system of power lithium battery used for electric vehicle of the one described in claim 1, it is characterised in that: be given
Discrete control system structure chart, charging controls to use digitial controller to realize, is mainly opened by voltage x current input, model selection
Pass, voltage x current controller, controlled device transmission function etc. are constituted.
8. according to the sub-batter-charghing system of power lithium battery used for electric vehicle of the one described in claim 7, it is characterised in that: pass through
Voltage loop and electric current loop realize Isobarically Control and current constant control strategy respectively, and at constant-current charging phase, it is defeated that system controls target
Going out electric current, Isobarically Control stage, system is with output voltage for controlling target.
9. according to the sub-batter-charghing system of power lithium battery used for electric vehicle of the one described in claim 7 or 8, it is characterised in that:
In order to ensure that system prevents regulated quantity from suddenling change in constant voltage, constant current handoff procedure, use the mode implementation pattern calculating regulated quantity
Switching.
10. according to the one sub-batter-charghing system of power lithium battery used for electric vehicle described in claim 7 or 8 or 9, its feature
It is: give the specific works principle of switching control: output regulated quantity u of system computing controller simultaneouslyv(k) and ui(k),
Wherein, uvK () is voltage-regulation amount, uiK () is current adjustment, when needs charging switching, compare the big of two regulated quantitys
Little, when meeting ui(k)≥uvK, time (), system enters switching state.In order to ensure that system prevents in constant voltage, constant current handoff procedure
Regulated quantity is suddenlyd change, and uses the mode implementation pattern switching calculating regulated quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610521952.7A CN106080240A (en) | 2016-07-02 | 2016-07-02 | A kind of sub-batter-charghing system of power lithium battery used for electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610521952.7A CN106080240A (en) | 2016-07-02 | 2016-07-02 | A kind of sub-batter-charghing system of power lithium battery used for electric vehicle |
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| CN201610521952.7A Pending CN106080240A (en) | 2016-07-02 | 2016-07-02 | A kind of sub-batter-charghing system of power lithium battery used for electric vehicle |
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Cited By (3)
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| CN106558738A (en) * | 2016-11-30 | 2017-04-05 | 深圳拓邦股份有限公司 | A kind of method for charging batteries and battery charger |
| CN107910928A (en) * | 2018-01-03 | 2018-04-13 | 苏州驼力新能源科技有限公司 | A kind of power rectifier resonance quick charger and its control method |
| CN108215872A (en) * | 2017-12-01 | 2018-06-29 | 国网北京市电力公司 | Charging method, device, storage medium and the processor of electric vehicle |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |