CN103887838A - Intelligent charging system of electric automobile-mounted accessory battery - Google Patents
Intelligent charging system of electric automobile-mounted accessory battery Download PDFInfo
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- CN103887838A CN103887838A CN201210564018.5A CN201210564018A CN103887838A CN 103887838 A CN103887838 A CN 103887838A CN 201210564018 A CN201210564018 A CN 201210564018A CN 103887838 A CN103887838 A CN 103887838A
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- battery
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- automobile
- charging module
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Abstract
The invention discloses an intelligent charging system of an electric automobile-mounted accessory battery. The intelligent charging system comprises an automobile-mounted battery set, a DC-DC charging module and an automobile-mounted accessory battery, wherein a relay is connected between the automobile-mounted battery set and the input terminal of the DC-DC charging module, the output terminal of the DC-DC charging module is connected with the input terminal of the automobile-mounted accessory battery; the output terminal of the automobile-mounted accessory battery is connected with a voltage acquisition circuit, the output terminal of the voltage acquisition circuit is connected with an A/D conversion circuit, the sample voltage data is subjected to A/D conversion and then calculated by a single-chip microcomputer; the calculation result is transferred to the relay by an optoelectronic coupler, so as to control the on and the off of the relay. The voltage across the automobile-mounted accessory battery is intelligently detected by the system, the charging of the automobile-mounted accessory battery is automatically controlled, the voltage across the automobile-mounted accessory battery is kept in a special range, and the battery is dynamically charged, so as to prevent power shortage or over charge of the battery and improve the stability of an automobile-mounted electric control system.
Description
Technical field
The present invention relates to the vehicle-mounted accessory battery intelligence of electric automobile and mend electric system.
Background technology
The annex storage battery that has high pressure 96V batteries (for electric automobile motor provides power supply, call in the following text: large battery) and a low pressure 12V that loads on electric automobile (for electric vehicle instrument and illumination provide power supply, calling in the following text: baby battery).At present, by the large battery of vehicle-mounted 96V, it is charged.After car key is opened, large battery charges to baby battery, after key is closed, stops 12V baby battery to charge.
This charging modes lacks the Real-Time Monitoring to baby battery state, and charging and power-off are to be determined by human factor; This charging technique can not adapt to the specific (special) requirements of maintenance free cell, easily makes the overshoot of battery pair and owes punching, makes battery be difficult to reach the cycle life of regulation; Baby battery electric weight is too low, can affect the normal operation of the electric-control system of electric automobile, affects electric automobile and starts, and reduces the stability of automobile.
Summary of the invention
The object of the invention is to overcome the shortcoming of above-mentioned prior art, provide a kind of vehicle-mounted accessory battery intelligence of electric automobile of brand-new intelligent accumulator charging to mend electric system.
The present invention is achieved by the following technical solutions:
The vehicle-mounted accessory battery intelligence of a kind of electric automobile is mended electric system, include Vehicular accumulator cell group, DC-DC charging module and vehicle-mounted annex storage battery, it is characterized in that: between described Vehicular accumulator cell group and the input of DC-DC charging module, be connected with relay, the output of DC-DC charging module is connected with vehicle-mounted annex storage battery input; The output of described vehicle-mounted annex storage battery is connected with voltage collection circuit, voltage collection circuit output connects A/D change-over circuit, after changing by A/D, sampled value is sent into single-chip microcomputer and carry out computing, calculate the voltage of battery, the operation result of single-chip microcomputer inputs to connected light and electric coupling, pass to relay by photoelectric coupling, and control relay disconnects or closure; The power supply of described single-chip microcomputer is by the power supply of DC-DC transducer by Vehicular accumulator cell group.
Because DC-DC charging module is connected on vehicle-mounted annex storage battery all the time, for preventing that vehicle-mounted annex battery current from blowing back into constantly consumes power of DC-DC charging module, is connected in series a diode between DC-DC charging module output and vehicle-mounted annex storage battery.
Advantage of the present invention is:
1, detected the voltage of vehicle-mounted annex storage battery by system intelligence, automatically control the charging to vehicle-mounted annex storage battery; Realizing vehicle-mounted annex battery tension and be stabilized between given zone, is battery charging dynamically, prevents that battery electric quantity is not enough or overcharge charging, has improved the stability of Vehicular electric control system;
2, solved electric automobile and do not started for a long time, the loss of vehicle-mounted annex accumulator electric-quantity is larger, and electric automobile electric-controlled parts such as can not start at the problem;
3, adopt the method for electric resistance partial pressure to gather voltage, on the basis that meets testing conditions, reduced greatly again the cost of tension measuring circuit.
Accompanying drawing explanation
Figure is control principle block diagram of the present invention.
Embodiment
Embodiment: the vehicle-mounted accessory battery intelligence of electric automobile is as shown in the figure mended electric system, include Vehicular accumulator cell group, DC-DC charging module and vehicle-mounted annex storage battery, it is characterized in that: between described Vehicular accumulator cell group and the input of DC-DC charging module, be connected with relay, the output of DC-DC charging module is connected with vehicle-mounted annex storage battery input; The output of described vehicle-mounted annex storage battery is connected with voltage collection circuit, voltage collection circuit output connects A/D change-over circuit, after changing by A/D, sampled value is sent into single-chip microcomputer and carry out computing, calculate the voltage of battery, the operation result of single-chip microcomputer inputs to connected light and electric coupling, pass to relay by photoelectric coupling, and control relay disconnects or closure.The power supply of described single-chip microcomputer is to provide (+5V) supply voltage by DC-DC transducer for single-chip microcomputer by Vehicular accumulator cell group.Adopting this is the single-chip microcomputer mode of power supply separately, can strengthen single-chip microcomputer antijamming capability, improves system reliability of operation.。
Because DC-DC charging module is connected on vehicle-mounted annex storage battery all the time, for preventing that vehicle-mounted annex battery current from blowing back into constantly consumes power of DC-DC charging module, is connected in series a diode between DC-DC charging module output and vehicle-mounted annex storage battery.
Operation principle is: owing to being connected to voltage collection circuit between vehicle-mounted annex storage battery and A/D change-over circuit, carry out A/D sampling by A/D change-over circuit by voltage collection circuit, sampled value is sent into single-chip microcomputer and carry out computing, calculate the voltage of battery.The magnitude of voltage recording when single-chip microcomputer is during lower than 9V, single-chip microcomputer sends instruction, signal passes to relay by photoelectrical coupler, relay closes, charging circuit is connected, by DC-DC charging module, being 13.5V voltage by the voltage transitions of 96V by Vehicular accumulator cell group, is vehicle-mounted annex charge in batteries.Along with the continuous increase of battery electric quantity, the voltage of vehicle-mounted annex storage battery raises gradually, the voltage that battery detected when single-chip microcomputer is during higher than 12V, show that vehicle-mounted annex storage battery has charged complete, single-chip microcomputer sends instruction, signal passes to relay by photoelectrical coupler, and relay disconnects, and stops charging.Along with the consumption of vehicle-mounted annex accumulator electric-quantity, the voltage of vehicle-mounted annex storage battery can be gradually reduction, in the time that single-chip microcomputer detects that voltage is down to 9V again, relay is again closed, charging process starts, circulation and so forth, and vehicle-mounted annex battery tension will be stabilized in 9-12V, realize the charging system Based Intelligent Control to vehicle-mounted annex storage battery, guaranteed the stable operation of system.
Claims (2)
1. the vehicle-mounted accessory battery intelligence of electric automobile is mended electric system, include Vehicular accumulator cell group, DC-DC charging module and vehicle-mounted annex storage battery, it is characterized in that: between described Vehicular accumulator cell group and the input of DC-DC charging module, be connected with relay, the output of DC-DC charging module is connected with vehicle-mounted annex storage battery input; The output of described vehicle-mounted annex storage battery is connected with voltage collection circuit, voltage collection circuit output connects A/D change-over circuit, after changing by A/D, sampled value is sent into single-chip microcomputer and carry out computing, calculate the voltage of battery, the operation result of single-chip microcomputer inputs to connected light and electric coupling, pass to relay by photoelectrical coupler, and control relay disconnects or closure; The power supply of described single-chip microcomputer is by the power supply of DC-DC transducer by Vehicular accumulator cell group.
2. the vehicle-mounted accessory battery intelligence of electric automobile according to claim 1 is mended electric system, it is characterized in that: because DC-DC charging module is connected on vehicle-mounted annex storage battery all the time, for preventing that vehicle-mounted annex battery current from blowing back into constantly consumes power of DC-DC charging module, is connected in series a diode between DC-DC charging module output and vehicle-mounted annex storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210564018.5A CN103887838A (en) | 2012-12-24 | 2012-12-24 | Intelligent charging system of electric automobile-mounted accessory battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210564018.5A CN103887838A (en) | 2012-12-24 | 2012-12-24 | Intelligent charging system of electric automobile-mounted accessory battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103887838A true CN103887838A (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210564018.5A Pending CN103887838A (en) | 2012-12-24 | 2012-12-24 | Intelligent charging system of electric automobile-mounted accessory battery |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496995A (en) * | 2011-12-16 | 2012-06-13 | 湖南工业大学 | Lithium battery charging power supply management method and system for the same |
| CN202276300U (en) * | 2011-09-30 | 2012-06-13 | 长沙学院 | Multistage absorption solar photovoltaic cell electric energy controller |
| CN202333919U (en) * | 2011-12-12 | 2012-07-11 | 十堰盈瑞汽车电子有限公司 | Charging system of small battery of rechargeable car |
| CN203218899U (en) * | 2012-12-24 | 2013-09-25 | 郑州中电新能源汽车有限公司 | Intelligent charging system of electric automobile accessory battery |
-
2012
- 2012-12-24 CN CN201210564018.5A patent/CN103887838A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202276300U (en) * | 2011-09-30 | 2012-06-13 | 长沙学院 | Multistage absorption solar photovoltaic cell electric energy controller |
| CN202333919U (en) * | 2011-12-12 | 2012-07-11 | 十堰盈瑞汽车电子有限公司 | Charging system of small battery of rechargeable car |
| CN102496995A (en) * | 2011-12-16 | 2012-06-13 | 湖南工业大学 | Lithium battery charging power supply management method and system for the same |
| CN203218899U (en) * | 2012-12-24 | 2013-09-25 | 郑州中电新能源汽车有限公司 | Intelligent charging system of electric automobile accessory battery |
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Application publication date: 20140625 |
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| RJ01 | Rejection of invention patent application after publication |