CN103972936A - Electric car smart charger based on fuzzy self-adaptation PID control - Google Patents
Electric car smart charger based on fuzzy self-adaptation PID control Download PDFInfo
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- CN103972936A CN103972936A CN201310040561.XA CN201310040561A CN103972936A CN 103972936 A CN103972936 A CN 103972936A CN 201310040561 A CN201310040561 A CN 201310040561A CN 103972936 A CN103972936 A CN 103972936A
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Abstract
An electric car smart charger based on fuzzy self-adaptation PID control comprises a voltage-stabilized power supply circuit part, a single-chip microcomputer system circuit part and a charging voltage and pulse control circuit part. The voltage-stabilized power supply circuit part takes power form a transformer, and the power is subjected to voltage stabilization and supplied for a single-chip microcomputer. The single-chip microcomputer system circuit part mainly comprises a temperature measuring circuit, a storage battery voltage sampling circuit, a charging voltage control circuit, a pulse controller and the like. The charging voltage and pulse control circuit part receives the control signals of the single-chip microcomputer system circuit and transmits electric energy to a storage battery. The charger having various advanced functions such as temperature compensation, pulse charging and trickle charging can smartly decide charging manners according to the state of the battery and repair the slightly-damaged storage battery.
Description
Technical field
The present invention relates to the charger of electric vehicle, be applicable to the electric bicycle of various brands and model, can intellectual monitoring charged state, protection storage battery, belongs to electric motor car charging technique field.
Background technology
Current electric vehicle charger mainly contains following three kinds: 1, three-step charger, is divided into constant current, constant voltage, floating charge three phases by charging modes; Syllogic charging modes can meet the needs of the daily charging of electric motor car substantially.2, with the charger of anti-reverse and timing function, in the time of electromobile battery reverse polarity connection, do not charge, prevent fault; After the charging upper limit time reaches, force to transfer floating charge state to, prevent from damaging lead acid accumulator.3, pulse charger, changes the constant-voltage phase in three-step charger into pulse charging mode, does not carry out temperature-compensating, and charging effect has lifting but be undesirable.
Prior art has following shortcoming: 1, three-step charger is the simplest, and cost is also minimum, but this charging modes has problems, such as each producer accumulator polarity difference, easily burns out charger; Can not timed and forced floating charge; Easily damage storage battery etc.Although 2, can effectively prevent with the charger of timing function the fault occurring because polarity is different with anti-reverse, and can force floating charge, thyristor or the relays of adopting are controlled more, and electrical network is had impact or has potential safety hazard.3, pulse charger has solved the problem of temperature rise aspect in charging process, and charge efficiency increases simultaneously, but the charging interval can be longer, does not carry out temperature-compensating simultaneously and there will be charging in winter not exclusively, the problem of overcharging summer.
Summary of the invention
In order to overcome the various defects of above-mentioned electric vehicle charger, the invention provides a kind of electric vehicle intelligent charger based on Fuzzy Adaptive PID Control, it has the intellectuality of height, can automatically determine charging modes according to the oneself state of storage battery, automatically regulate charging voltage and the charging current of storage battery.
The present invention for the technical scheme that its technical problem of solution adopts is: the electric vehicle intelligent charger based on Fuzzy Adaptive PID Control comprises transformer, the output of transformer is connected with the power input of charging voltage and pulse control circuit with the power input of voltage-stabilized power supply circuit respectively, the output of voltage-stabilized power supply circuit is connected with microcontroller system circuit, the output control terminal of microcontroller system circuit is connected with the input control end of charging voltage and pulse control circuit, and the power output end of voltage and pulse control circuit is connected with storage battery; Described microcontroller system circuit comprises single-chip microcomputer, temperature measurement circuit and battery tension sample circuit, and temperature measurement circuit is connected from the different pins of single-chip microcomputer with battery tension sample circuit.
Technique scheme is following technical solution problem, alternating current becomes D.C. regulated power supply after transformer and voltage-stabilized power supply circuit, D.C. regulated power supply provides power supply for microcontroller system circuit, single-chip microcomputer judges whether overdischarge of storage battery by battery tension sample circuit, carries out trickle charge for the storage battery of overdischarge; In the time that can bearing large electric current, storage battery enters again the constant current charge in the conventional syllogic charging stage; Storage battery for not overdischarge carries out conventional constant current charge; Along with cell voltage rises, charging voltage of the present invention and pulse control circuit produce pulse current charge mode by the constant voltage charge replacing in the conventional syllogic charging stage; Be full of electricity or charging interval at storage battery and reach after the floating charge start-up time arranging in single-chip microcomputer, for making up storage battery self discharge, microcontroller system circuit sends control signal, controls charging voltage and pulse control circuit storage battery is carried out to floating charge.
The size of the charging voltage that charging voltage and pulse control circuit are exported is by the controlled square wave control of single-chip microcomputer output duty cycle, the calculation of parameter that single-chip microcomputer is inputted according to temperature measurement circuit goes out ambient temperature, again based on the intelligent computation of Fuzzy Adaptive PID Control algorithm the controlled square wave control signal of output duty cycle, the charging voltage that square wave control charging voltage and pulse control circuit produce; According to ambient temperature Based Intelligent Control charging voltage size, reach the perfect condition that all can be full of storage battery under different temperatures.
In single-chip microcomputer, be provided with the program that pulse produces, single-chip microcomputer sends pulse signal to charging voltage and pulse control circuit, control charging voltage and pulse control circuit constantly charge-stop and fill-charge, circulate with this, this charging modes makes to reduce gassing in charging process and reduces temperature rise, extending battery life, improves charge efficiency.
The invention has the beneficial effects as follows, shortened the charging interval by series of measures such as temperature-compensating, trickle charge, pulse current charge and Intelligent Single-Chip Based computings, improve charge efficiency, extending battery life, can arrange easily and force the floating charge time.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is circuit block diagram of the present invention.
Fig. 2 is microcontroller system circuit block diagram of the present invention.
Embodiment
In Fig. 1, the output of transformer is connected with the power input of charging voltage and pulse control circuit with the power input of 5V power circuit respectively, 5V power circuit is microcontroller system circuit power supply, the output control terminal of microcontroller system circuit is connected with the input control end of charging voltage and pulse control circuit, and the power output end of voltage and pulse control circuit is connected with storage battery.
In Fig. 2, microcontroller system circuit comprises single-chip microcomputer, temperature measurement circuit and battery tension sample circuit, and temperature measurement circuit is connected from the different pins of single-chip microcomputer with battery tension sample circuit.
Claims (1)
- An electric vehicle intelligent charger based on Fuzzy Adaptive PID Control it comprise transformer, it is characterized in that, the output of transformer is connected with the power input of charging voltage and pulse control circuit with the power input of voltage-stabilized power supply circuit respectively, the output of voltage-stabilized power supply circuit is connected with microcontroller system circuit, the output control terminal of microcontroller system circuit is connected with the input control end of charging voltage and pulse control circuit, and the power output end of voltage and pulse control circuit is connected with storage battery; Described microcontroller system circuit comprises single-chip microcomputer, temperature measurement circuit and battery tension sample circuit, and temperature measurement circuit is connected from the different pins of single-chip microcomputer with battery tension sample circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310040561.XA CN103972936A (en) | 2013-02-02 | 2013-02-02 | Electric car smart charger based on fuzzy self-adaptation PID control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310040561.XA CN103972936A (en) | 2013-02-02 | 2013-02-02 | Electric car smart charger based on fuzzy self-adaptation PID control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103972936A true CN103972936A (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310040561.XA Pending CN103972936A (en) | 2013-02-02 | 2013-02-02 | Electric car smart charger based on fuzzy self-adaptation PID control |
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| CN (1) | CN103972936A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882916A (en) * | 2014-11-17 | 2015-09-02 | 苏州市职业大学 | Intelligent electric bicycle charger with reservation function |
-
2013
- 2013-02-02 CN CN201310040561.XA patent/CN103972936A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882916A (en) * | 2014-11-17 | 2015-09-02 | 苏州市职业大学 | Intelligent electric bicycle charger with reservation function |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140806 |