CN104052317A - Voltage simulator of battery of electric vehicle - Google Patents
Voltage simulator of battery of electric vehicle Download PDFInfo
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- CN104052317A CN104052317A CN201410314128.5A CN201410314128A CN104052317A CN 104052317 A CN104052317 A CN 104052317A CN 201410314128 A CN201410314128 A CN 201410314128A CN 104052317 A CN104052317 A CN 104052317A
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- voltage stabilizing
- source unit
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- stabilizing chip
- reference voltage
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Abstract
The invention discloses a voltage simulator of a battery of an electric vehicle. The voltage simulator comprises a high-voltage direct-current power unit and a plurality of grades of three-end standard stabilized power supply units which are connected in series; each grade of three-end standard stabilized power supply unit comprises a three-end standard voltage stabilizing chip; the high-voltage direct-current power supply unit comprises an industrial frequency transformer, an industrial frequency transformer primary winding is connected with an industrial frequency power supply, a secondary winding is connected with the input end of a single-phase bridge rectifier, and the output end of the single-phase bridge rectifier is connected with a public anode tap of a three-end standard voltage stabilizing chip in the first grade of three-end standard stabilized power supply unit through a capacitor filter. The voltage simulator has the advantages that the circuit structure is simple, reliable in performance and small in size. The voltage output port of each grade of three-end standard stabilized power supply unit simulates the voltage of one battery. Thus, the defects that according to an existing battery voltage simulator, the voltage of the battery is not stable and direct-current high-voltage fluctuation causes changes of loop currents are overcome.
Description
Technical field
The present invention relates to electric automobile, especially relate to batteries of electric automobile voltage analog device.
Background technology
In electric automobile engine bench test, need to adopt cell voltage simulator to simulate the lithium battery of multi-section serial, cell management system of electric automobile and whole-control system are tested, and required the output voltage of every batteries of simulation to regulate separately.Current method is to adopt the independent current source unit identical with on-vehicle battery quantity to come simulated battery voltage to test, because generally having more than 100 joints, batteries of electric automobile is in series, so just need more than 100 power modules, while making electric automobile engine bench test, place, shared space is large, cost is high.
Summary of the invention
The object of the invention is to provide a kind of batteries of electric automobile voltage analog device.
For achieving the above object, the present invention takes following technical proposals:
Batteries of electric automobile voltage analog device of the present invention, comprises high voltage direct current source unit and the multistage three end reference voltage stabilizing source unit that are in series;
Described every grade of three end reference voltage stabilizing source unit include the accurate voltage stabilizing chip of three end groups, the output cathode end of the accurate voltage stabilizing chip of described three end group is connected with simulated battery Voltage-output interface positive and negative electrode at the corresponding levels respectively with public anode end, the reference voltage input terminal of the accurate voltage stabilizing chip of three end groups is connected by regulating resistance and simulated battery Voltage-output interface at the corresponding levels are anodal, between the output cathode end of the accurate voltage stabilizing chip of three end groups and public anode end, is parallel with voltage stabilizing didoe branch road and output capacitance branch road;
Described high voltage direct current source unit comprises Industrial Frequency Transformer, described Industrial Frequency Transformer armature winding is connected with power frequency supply and secondary winding is connected with single-phase bridge rectifier input, and described single-phase bridge rectifier output is connected with the public anode end of the accurate voltage stabilizing chip of three end groups in the first order three end reference voltage stabilizing source unit through capacitive filter;
Being connected between the described multistage three end reference voltage stabilizing source unit that are in series: the output cathode end of the accurate voltage stabilizing chip of three end groups in upper level three end reference voltage stabilizing source unit is connected with the public anode end of the accurate voltage stabilizing chip of three end groups in next stage three end reference voltage stabilizing source unit.
Described every grade of three end reference voltage stabilizing source unit are provided with constant current source unit, and described constant current source unit consists of field effect transistor and operational amplifier; Described operational amplifier positive input is connected with the output cathode end of the accurate voltage stabilizing chip of three end groups by resistance, described operational amplifier reverse input end is connected with the source electrode of described field effect transistor and passes through grounding through resistance, operational amplifier output terminal is connected with the grid of field effect transistor, and the drain electrode of field effect transistor is connected with working power.
The invention has the advantages that circuit structure is simple, dependable performance, volume be little.The Voltage-output interface of every grade of three end reference voltage stabilizing source unit is simulated a batteries voltage.The constant-current source control loop consisting of field effect transistor and operational amplifier does not interfere with each other every grade of three end reference voltage stabilizing source unit, thereby has eliminated the deficiency that existing cell voltage simulator exists cell voltage loop current unstable and that high direct voltage fluctuation causes to change.
Accompanying drawing explanation
Fig. 1 is circuit structure block diagram of the present invention.
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
As shown in Figure 1, 2, batteries of electric automobile voltage analog device of the present invention, comprises high voltage direct current source unit 1 and the multistage three end reference voltage stabilizing source unit 2 that are in series; The progression (number) of the three end reference voltage stabilizing source unit 2 that are in series equals to need in electric automobile engine bench test the lithium battery joint number of series connection.
Described every grade of three end reference voltage stabilizing source unit 2 include the accurate voltage stabilizing chip of three end groups U1(integrated circuit TL431), the accurate voltage stabilizing chip of described three end group U1(integrated circuit TL431) output cathode end K and public anode end A respectively with simulated battery Voltage-output interface JK at the corresponding levels just, negative pole connects, the accurate voltage stabilizing chip of three end groups U1(integrated circuit TL431) reference voltage input terminal R is connected with simulated battery Voltage-output interface JK positive pole at the corresponding levels by regulating resistance R1, at the accurate voltage stabilizing chip of three end groups U1(integrated circuit TL431) output cathode end K and public anode end A between be parallel with voltage stabilizing didoe D1 branch road and output capacitance C1 branch road,
Described high voltage direct current source unit 1 comprises Industrial Frequency Transformer T1, described Industrial Frequency Transformer T1 armature winding is connected with power frequency supply (AC220V) and secondary winding is connected with single-phase bridge rectifier 3 inputs, the filter 4 that described single-phase bridge rectifier 3 outputs form through capacitor C 2, resistance R 2 and the accurate voltage stabilizing chip of the three end groups U1(integrated circuit TL431 in the first order three end reference voltage stabilizing source unit 2) public anode end A be connected;
Being connected between the described multistage three end reference voltage stabilizing source unit 2 that are in series: the output cathode end K accurate voltage stabilizing chip of the three end groups U1(integrated circuit TL431 in upper level three end reference voltage stabilizing source unit 2) and the accurate voltage stabilizing chip of the three end groups U1(integrated circuit TL431 in next stage three end reference voltage stabilizing source unit 2) public anode end A is connected.
Described every grade of three end reference voltage stabilizing source unit 2 are provided with constant current source unit 5, and described constant current source unit 5 is by field effect transistor Q1 and operational amplifier U2(integrated circuit LMC6022) form; Described operational amplifier U2(integrated circuit LMC6022) positive input is by resistance R 3 and the accurate voltage stabilizing chip of three end groups U1(integrated circuit TL431) output cathode end K be connected, described operational amplifier U2(integrated circuit LMC6022) reverse input end is connected with the source S of described field effect transistor Q1 and passes through resistance R 4 ground connection, operational amplifier U2(integrated circuit LMC6022) output is connected with the grid G of field effect transistor Q1, and the drain D of field effect transistor Q1 is connected with direct current 12V working power.
Claims (2)
1. a batteries of electric automobile voltage analog device, comprises high voltage direct current source unit and the multistage three end reference voltage stabilizing source unit that are in series; It is characterized in that:
Described every grade of three end reference voltage stabilizing source unit include the accurate voltage stabilizing chip of three end groups, the output cathode end of the accurate voltage stabilizing chip of described three end group is connected with simulated battery Voltage-output interface positive and negative electrode at the corresponding levels respectively with public anode end, the reference voltage input terminal of the accurate voltage stabilizing chip of three end groups is connected by regulating resistance and simulated battery Voltage-output interface at the corresponding levels are anodal, between the output cathode end of the accurate voltage stabilizing chip of three end groups and public anode end, is parallel with voltage stabilizing didoe branch road and output capacitance branch road;
Described high voltage direct current source unit comprises Industrial Frequency Transformer, described Industrial Frequency Transformer armature winding is connected with power frequency supply and secondary winding is connected with single-phase bridge rectifier input, and described single-phase bridge rectifier output is connected with the public anode end of the accurate voltage stabilizing chip of three end groups in the first order three end reference voltage stabilizing source unit through capacitive filter;
Being connected between the described multistage three end reference voltage stabilizing source unit that are in series: the output cathode end of the accurate voltage stabilizing chip of three end groups in upper level three end reference voltage stabilizing source unit is connected with the public anode end of the accurate voltage stabilizing chip of three end groups in next stage three end reference voltage stabilizing source unit.
2. batteries of electric automobile voltage analog device according to claim 1, is characterized in that: described every grade of three end reference voltage stabilizing source unit are provided with constant current source unit, and described constant current source unit consists of field effect transistor and operational amplifier; Described operational amplifier positive input is connected with the output cathode end of the accurate voltage stabilizing chip of three end groups by resistance, described operational amplifier reverse input end is connected with the source electrode of described field effect transistor and passes through grounding through resistance, operational amplifier output terminal is connected with the grid of field effect transistor, and the drain electrode of field effect transistor is connected with working power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410314128.5A CN104052317A (en) | 2014-07-03 | 2014-07-03 | Voltage simulator of battery of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410314128.5A CN104052317A (en) | 2014-07-03 | 2014-07-03 | Voltage simulator of battery of electric vehicle |
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| Publication Number | Publication Date |
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| CN104052317A true CN104052317A (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410314128.5A Pending CN104052317A (en) | 2014-07-03 | 2014-07-03 | Voltage simulator of battery of electric vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405169A (en) * | 2016-08-31 | 2017-02-15 | 天津市捷威动力工业有限公司 | Adjustable power source system used for battery management system to test and simulate battery single cell voltage |
| CN107315154A (en) * | 2017-07-18 | 2017-11-03 | 上海沪歌智能科技有限公司 | A kind of battery data logging device battery voltage analog device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106405169A (en) * | 2016-08-31 | 2017-02-15 | 天津市捷威动力工业有限公司 | Adjustable power source system used for battery management system to test and simulate battery single cell voltage |
| CN107315154A (en) * | 2017-07-18 | 2017-11-03 | 上海沪歌智能科技有限公司 | A kind of battery data logging device battery voltage analog device |
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Application publication date: 20140917 |