CN105509912A - Vehicle-mounted battery safety detection system applied to electric vehicle - Google Patents
Vehicle-mounted battery safety detection system applied to electric vehicle Download PDFInfo
- Publication number
- CN105509912A CN105509912A CN201510934729.0A CN201510934729A CN105509912A CN 105509912 A CN105509912 A CN 105509912A CN 201510934729 A CN201510934729 A CN 201510934729A CN 105509912 A CN105509912 A CN 105509912A
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- Prior art keywords
- chip
- signal
- vehicle
- vehicle battery
- chip microcomputer
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2219/00—Thermometers with dedicated analog to digital converters
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- 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
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- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention relates to the technical field of electric vehicles, and particularly relates to a vehicle-mounted battery safety detection system applied to an electric vehicle. The vehicle-mounted battery safety detection system comprises a vehicle-mounted battery, a signal acquisition and conversion circuit, a single-chip microcomputer, a level conversion chip, an RS-232 serial communication interface and an upper computer which are connected in turn. The single-chip microcomputer is connected with a temperature sensor. Temperature of the vehicle-mounted battery is detected in real time so that monitoring of temperature of the vehicle-mounted battery can be ensured and safety of temperature of the vehicle-mounted battery can be guaranteed; meanwhile, voltage and current information fed back by the vehicle-mounted battery is collected and converted by using the signal acquisition and conversion circuit so as to prevent the risk of work caused by abnormality of voltage and current; besides, viewing of data information is realized by a user through using the upper computer so that risk information can be timely discovered, and thus the vehicle-mounted battery safety detection system is simple in structure and convenient to operate and has high practicality.
Description
Technical field
The present invention relates to vehicle technology field, especially a kind of on-vehicle battery safety detecting system applying to electric motor car.
Background technology
As everyone knows, the contradiction of lack of energy and environmental disruption, based on the energy saving standard of electric automobile, the development of electric automobile becomes inexorable trend.On-vehicle battery is the core position of electric automobile, and the key of battery management system research is the energy how effectively utilizing accumulator, increases the serviceable life of battery.Battery management system can estimate dump energy, guarantees in rational working range, can carry out early prediction again to fail battery, avoids the destruction due to cell can not Timeliness coverage and reduce serviceable life of whole Battery pack.Therefore, the research of battery management system (bms) is more and more subject to people's attention
Summary of the invention
For above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of on-vehicle battery safety detecting system applying to electric motor car.
To achieve these goals, the present invention adopts following technical scheme:
Apply to an on-vehicle battery safety detecting system for electric motor car, it comprises on-vehicle battery, signals collecting change-over circuit, temperature sensor, single-chip microcomputer, level transferring chip, RS-232 serial communication interface and host computer;
Described temperature sensor detects the temperature signal of on-vehicle battery in real time and the signal detected is inputed to single-chip microcomputer, voltage signal and current signal are inputed to signals collecting change-over circuit by described on-vehicle battery, signal is carried out Collect conversion and signal is inputed to single-chip microcomputer by described signals collecting change-over circuit, signal carries out arranging and by signal feedback to level transferring chip by described single-chip microcomputer, signal is carried out level conversion and the signal after conversion is inputed to RS-232 serial communication interface and by RS-232 serial communication interface, signal inputed to host computer by described level transferring chip.
Preferably, described single-chip microcomputer is STC89C52 single-chip microcomputer, and described level transferring chip is MAX232 chip.
Preferably, described signals collecting change-over circuit comprises ADC0804 chip, 6 pins of described ADC0804 chip are connected with on-vehicle battery by the 3rd resistance, by the 4th resistance eutral grounding between described on-vehicle battery and the 3rd resistance, 4 pins of described ADC0804 chip are also connected with 19 pins of self by the 5th resistance by the first capacity earth, 9 pins of described ADC0804 chip are by the first resistance access power supply and by the second resistance eutral grounding, and P3.6 pin and the P3.7 pin of 2 pins of described ADC0804 chip and 3 pins and single-chip microcomputer are connected.
Preferably, described temperature sensor is DS18B20 temperature sensor, and the I/O pin of described temperature sensor and VCC pins in parallel have the 6th resistance, and the I/O pin of described temperature sensor is connected with the P22 pin of single-chip microcomputer.
Owing to have employed such scheme, the present invention detects the temperature of on-vehicle battery in real time, to guarantee the monitoring temperature of on-vehicle battery, ensures the temperature safety of on-vehicle battery; Meanwhile, abnormal to the danger brought that works for preventing electric current and voltage from occurring, then the electric current and voltage information utilizing signals collecting change-over circuit to be fed back by on-vehicle battery carries out collecting and changing; Further, user utilizes host computer to realize checking data message, thus Timeliness coverage dangerous information, its structure is simple, easy to operate, has very strong practicality.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the embodiment of the present invention;
Fig. 2 is the electrical block diagram of the signals collecting change-over circuit of the embodiment of the present invention;
Fig. 3 is the structural representation of the peripheral circuit of the temperature sensor of the embodiment of the present invention;
Fig. 4 is the structural representation of the peripheral circuit of the level transferring chip of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figures 1 to 4, a kind of on-vehicle battery safety detecting system applying to electric motor car of the present embodiment, it comprises on-vehicle battery 1, signals collecting change-over circuit 2, temperature sensor 3, single-chip microcomputer 4, level transferring chip 5, RS-232 serial communication interface 6 and host computer 7;
Temperature sensor 3 detects the temperature signal of on-vehicle battery in real time and the signal detected is inputed to single-chip microcomputer 4, voltage signal and current signal are inputed to signals collecting change-over circuit 2 by on-vehicle battery 1, signal is carried out Collect conversion and signal is inputed to single-chip microcomputer 4 by signals collecting change-over circuit 2, signal carries out arranging by single-chip microcomputer 4 and by signal feedback to level transferring chip 5, signal is carried out level conversion and the signal after conversion is inputed to RS-232 serial communication interface 6 and by RS-232 serial communication interface 6, signal inputed to host computer 7 by level transferring chip 5.
The present embodiment detects the temperature of on-vehicle battery 1 in real time, to guarantee that the monitoring temperature of on-vehicle battery ensures on-vehicle battery temperature safety; Meanwhile, abnormal to the danger brought that works for preventing electric current and voltage from occurring, then the electric current and voltage information utilizing signals collecting change-over circuit 2 to be fed back by on-vehicle battery 1 carries out collecting and changing; Further, user utilizes host computer 7 to realize checking data message, thus Timeliness coverage dangerous information.
For optimization system, the single-chip microcomputer 4 of the present embodiment can adopt STC89C52 single-chip microcomputer, and level transferring chip 5 can adopt MAX232 chip.
In the signals collecting change-over circuit 2 of the present embodiment, the simulating signal collected is continuous print in time, and sends to the digital signal of single-chip microcomputer to be discrete.Therefore, signals collecting change-over circuit 2 must to the analog signal sampling collected on official hour point, and sample magnitude is converted to digital quantity and send to single-chip microcomputer 4.Therefore the circuit structure of signals collecting change-over circuit 2 can adopt circuit structure as shown in Figure 2, namely ADC0804 chip U1 is comprised, 6 pins of ADC0804 chip U1 are connected with on-vehicle battery 1 by the 3rd resistance R3, by the 4th resistance R4 ground connection between on-vehicle battery 1 and the 3rd resistance R3, 4 pins of ADC0804 chip U1 are also connected with 19 pins of self by the 5th resistance R5 by the first electric capacity C1 ground connection, 9 pins of ADC0804 chip U1 access power supply by the first resistance R1 and pass through the second resistance R2 ground connection, P3.6 pin and the P3.7 pin of 2 pins of ADC0804 chip U1 and 3 pins and single-chip microcomputer 4 are connected.
Simultaneously, the present embodiment temperature sensor 3 adopt DS18B20 temperature sensor, the peripheral circuit of its temperature sensor 3 can adopt circuit structure as shown in Figure 3, namely the I/O pin of temperature sensor 3 and VCC pins in parallel have the 6th resistance R6, and the I/O pin of temperature sensor 3 is connected with the P22 pin of single-chip microcomputer 4.This temperature sensor 3 adopts monobus lin protocol, and only take an I/O port, directly ambient temperature is changed into digital signal, Serial output is to single-chip microcomputer 4.
The present embodiment use Transistor-Transistor Logic level due to single-chip microcomputer 4, and RS-232 serial communication interface 6 uses RS-232 level, for ensureing communication stability, this use level transferring chip 5 is MAX232 chip, its turning mutually simultaneously between integrated RS-232 level and Transistor-Transistor Logic level.The peripheral circuit of level transferring chip 5 can adopt circuit structure as shown in Figure 4, namely the C2+ pin of level transferring chip 5 and C2-pins in parallel have the second electric capacity C2, the C-pin of level transferring chip 5 and C+ pins in parallel have the 4th electric capacity C4, the V-pin of level transferring chip C4 is by the 3rd electric capacity C3 ground connection, the V+ pin of level transferring chip 5 accesses power supply by the 5th electric capacity C5, the VCC pin access power supply of level transferring chip 5 is also by the 6th electric capacity C6 ground connection, the T1IN pin of level transferring chip 5 is connected with single-chip microcomputer 4 with R1OUT pin, the R1IN pin of level transferring chip 5 is connected with RS-232 serial communication interface 6 with T1OUT pin.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. apply to an on-vehicle battery safety detecting system for electric motor car, it is characterized in that: it comprises on-vehicle battery, signals collecting change-over circuit, temperature sensor, single-chip microcomputer, level transferring chip, RS-232 serial communication interface and host computer;
Described temperature sensor detects the temperature signal of on-vehicle battery in real time and the signal detected is inputed to single-chip microcomputer, voltage signal and current signal are inputed to signals collecting change-over circuit by described on-vehicle battery, signal is carried out Collect conversion and signal is inputed to single-chip microcomputer by described signals collecting change-over circuit, signal carries out arranging and by signal feedback to level transferring chip by described single-chip microcomputer, signal is carried out level conversion and the signal after conversion is inputed to RS-232 serial communication interface and by RS-232 serial communication interface, signal inputed to host computer by described level transferring chip.
2. a kind of on-vehicle battery safety detecting system applying to electric motor car as claimed in claim 1, it is characterized in that: described single-chip microcomputer is STC89C52 single-chip microcomputer, described level transferring chip is MAX232 chip.
3. a kind of on-vehicle battery safety detecting system applying to electric motor car as claimed in claim 2, it is characterized in that: described signals collecting change-over circuit comprises ADC0804 chip, 6 pins of described ADC0804 chip are connected with on-vehicle battery by the 3rd resistance, by the 4th resistance eutral grounding between described on-vehicle battery and the 3rd resistance, 4 pins of described ADC0804 chip are also connected with 19 pins of self by the 5th resistance by the first capacity earth, 9 pins of described ADC0804 chip are by the first resistance access power supply and by the second resistance eutral grounding, P3.6 pin and the P3.7 pin of 2 pins of described ADC0804 chip and 3 pins and single-chip microcomputer are connected.
4. a kind of on-vehicle battery safety detecting system applying to electric motor car as claimed in claim 2, it is characterized in that: described temperature sensor is DS18B20 temperature sensor, the I/O pin of described temperature sensor and VCC pins in parallel have the 6th resistance, and the I/O pin of described temperature sensor is connected with the P22 pin of single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510934729.0A CN105509912A (en) | 2015-12-15 | 2015-12-15 | Vehicle-mounted battery safety detection system applied to electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510934729.0A CN105509912A (en) | 2015-12-15 | 2015-12-15 | Vehicle-mounted battery safety detection system applied to electric vehicle |
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| CN105509912A true CN105509912A (en) | 2016-04-20 |
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| CN201510934729.0A Pending CN105509912A (en) | 2015-12-15 | 2015-12-15 | Vehicle-mounted battery safety detection system applied to electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196201A (en) * | 2018-01-29 | 2018-06-22 | 新日(无锡)发展有限公司 | A kind of accumulator cell charging and discharging on-line monitoring system |
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| CN101615809A (en) * | 2008-06-27 | 2009-12-30 | 新奥科技发展有限公司 | A kind of single battery control system of vehicular power supply |
| CN102427256A (en) * | 2011-10-28 | 2012-04-25 | 山东大学 | Lithium battery pack management system of electric automobile |
| CN103412266A (en) * | 2013-08-21 | 2013-11-27 | 天津一汽夏利汽车股份有限公司 | Device for testing performance of automotive power supply |
| CN205317909U (en) * | 2015-12-15 | 2016-06-15 | 陈宝如 | Apply to on -vehicle battery safety detection system of electric motor car |
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2015
- 2015-12-15 CN CN201510934729.0A patent/CN105509912A/en active Pending
Patent Citations (7)
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| JP2004172058A (en) * | 2002-11-22 | 2004-06-17 | Matsushita Electric Ind Co Ltd | Battery management system and battery pack |
| CN2869954Y (en) * | 2006-02-16 | 2007-02-14 | 北京航空航天大学 | BCM controller assembly for light hybrid powder automobile |
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| CN101615809A (en) * | 2008-06-27 | 2009-12-30 | 新奥科技发展有限公司 | A kind of single battery control system of vehicular power supply |
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Application publication date: 20160420 |
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