CN205610285U - Batteries of electric vehicle organizes monitoring system - Google Patents

Batteries of electric vehicle organizes monitoring system Download PDF

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Publication number
CN205610285U
CN205610285U CN201620412648.4U CN201620412648U CN205610285U CN 205610285 U CN205610285 U CN 205610285U CN 201620412648 U CN201620412648 U CN 201620412648U CN 205610285 U CN205610285 U CN 205610285U
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China
Prior art keywords
pin
chip
circuit
microcontroller
connects
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Expired - Fee Related
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CN201620412648.4U
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Chinese (zh)
Inventor
马宪民
何凯
刘宇欣
范文玲
张兴
孙森
杨洁
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Xian University of Science and Technology
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Xian University of Science and Technology
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Priority to CN201620412648.4U priority Critical patent/CN205610285U/en
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Abstract

The utility model discloses a batteries of electric vehicle organizes monitoring system, including microcontroller, liquid crystal touch screen and communication module, microcontroller's input termination has temperature sensor, AD converting circuit and clock circuit, AD converting circuit's the useful voltage detection circuit in measuring battery cell voltage of input termination, the clock division circuits who is used for detecting the current detection circuit of group battery total current and is used for providing clock signal for AD converting circuit, microcontroller's output termination has warning circuit, first relay and thermal module, thermal module includes second relay and the liquid cooling ware that meets with the 2nd relay output end. The utility model discloses simple structure, real -time supervision battery cell's the voltage and the total current information of temperature and group battery are avoided the excessive pressure and are overflowed the damage that causes the group battery, reduce uneven temperature distribution in the group battery through setting up thermal module, and the performance and the life -span of improving the group battery, the practicality is strong.

Description

Batteries of electric automobile group monitoring system
Technical field
This utility model belongs to battery device for electric vehicle technical field, is specifically related to a kind of electric automobile electricity Pond group monitoring system.
Background technology
Along with development, automobile has very important role in entire society's progress and economic development.Electricity Electrical automobile has without exhaust emission, noise is low, be prone to handle, maintenance and the advantage such as operating cost is low, Environmental protection and energy-conservation on there is incomparable advantage.The guardian technique of electric automobile includes battery and pipe Reason technology, motor and control technology, full-vehicle control technology and car load Lightweight Technology.Certainly, this four Among individual key technology, battery and management technique are the most crucial.Battery is the power source of electric automobile, Also it is the key factor always restricting Development of Electric Vehicles.During the use of battery, sending out of battery Heat is very big, and battery temperature affects the operation of the electrochemical reaction of battery, cycle life and charging and can connect By property, power and energy, safety and reliability etc..The reason of battery spontaneous combustion has a lot, such as battery certainly Body reason, due to the problems such as barrier film cause damage, thermal runaway occurs, it is also possible to battery in groups time connect Line is short-circuited, and causes inside battery line short-circuit fire, it is also possible to automobile is exposed to the sun for a long time and sends a telegraph Chi Wen Spend height.Power battery pack in electric automobile is all to use low pressure cell to be used in series, monomer electricity The difference of pond performance can affect performance and the life-span of set of cells.In charging process, the battery electricity that capacity is little Press liter ratio very fast. i.e. when other battery is not yet full of, the battery that capacity is little fills with, and continues to fill The battery that electricity will result in capacity little is in overcharge condition.Result necessarily causes the battery that capacity is little charging During often in overcharging state, discharge process was in the state of putting. cause its life-span substantially to contract Short, bring whole group storage battery service life reduction.It addition, accumulator battery is during using, often occur The situation of single cell damage, if this situation fails to find in time, will cause the performance of other accumulator It is severely impacted, in turn results in the damage of whole group storage battery.Therefore, a kind of structure letter is nowadays lacked Convenient and manageable batteries of electric automobile group monitoring system is laid in single, reasonable in design, installation, by reality Time the monitoring voltage of cell and the total current information of temperature and set of cells, it is to avoid between cell not Balance, is reduced the damage of battery performance, information gathering is uploaded to by communication mode wirelessly or non-wirelessly Host computer, and use liquid crystal touch screen to show in real time, and by the peace of warning circuit synchronous monitoring set of cells Entirely, by arranging radiating module, the temperature of set of cells is controlled in certain scope, reduce in set of cells Uneven temperature is distributed, and allows electric automobile can reach optimal performance and life-span.
Utility model content
Technical problem to be solved in the utility model is, for above-mentioned deficiency of the prior art, to carry For a kind of batteries of electric automobile group monitoring system, its simple in construction, reasonable in design, monitor monomer in real time The total current information of the voltage of battery and temperature and set of cells, it is to avoid overvoltage causes the damage of set of cells with crossing stream Bad, by arranging radiating module, the temperature of set of cells is controlled in certain scope, reduce in set of cells Uneven temperature is distributed, and improves performance and the life-span of set of cells, practical, it is simple to promote the use of.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is: batteries of electric automobile Group monitoring system, it is characterised in that: include microcontroller and the lcd touch connected with microcontroller Shield and for the communication module communicated with host computer, the input of described microcontroller is connected to temperature Sensor, A/D change-over circuit and clock circuit, the input of described A/D change-over circuit be connected to for Detect the voltage detecting circuit of monomer battery voltage, for detecting the current detecting electricity of set of cells total current Road and for for A/D change-over circuit provide clock signal clock division circuits, described microcontroller Outfan is connected to warning circuit, the first relay and radiating module, and described radiating module includes that second continues Electrical equipment and the water-filled radiator connected with the second relay output end, described clock division circuits and second The input of relay all connects with the outfan of microcontroller, described temperature sensor and voltage detecting The quantity of circuit is two or more;
Described voltage detecting circuit includes that amplifier LM358, the in-phase input end of described amplifier LM358 are divided Two-way, a road connects with one end of resistance R4, and another road is through resistance R5 ground connection;Described amplifier LM358 Reverse input end divide two-way, a road connects with one end of resistance R3, another road and variable resistance R1 One end connect;The outfan of described amplifier LM358 divides two-way, and a road is another with variable resistance R1's One end connects, and another road connects with A/D change-over circuit;
Described current detection circuit includes chip I NA128, and the 3rd pin of described chip I NA128 divides Two-way, a road connects with one end of resistance R2, and another road is through resistance RL1 and current detection circuit One input connects;2nd pin of described chip I NA128 divides two-way, and a road is with resistance R2's The other end connects, and another road is another input of current detection circuit;Described chip I NA128 The 1st pin and the 8th pin between be connected to resistance Rg1, the 6th pin of described chip I NA128 with A/D change-over circuit connects.
Above-mentioned batteries of electric automobile group monitoring system, it is characterised in that: described A/D change-over circuit bag Include chip ADC0809, the 26th pin of described chip ADC0809 and the outfan phase of amplifier LM358 Connecing, the 1st pin of described chip ADC0809 connects with the 6th pin of chip I NA128, described 25th pin of chip ADC0809, the 24th pin, the 23rd pin, the 7th pin, the 21st draw Foot, the 20th pin, the 19th pin, the 18th pin, the 8th pin, the 15th pin, the 14th Pin and the 17th pin all connect with microcontroller, the 22nd pin of described chip ADC0809 and The connection end of 6 pins connects with microcontroller.
Above-mentioned batteries of electric automobile group monitoring system, it is characterised in that: described clock division circuits bag Include the 1st pin of chip 74LS74, described chip 74LS74, the 4th pin, the 10th pin, 13 pins and the 14th pin all connect with+5V power output end, and the 2nd of described chip 74LS74 is drawn Foot and the 6th pin connect, and the 5th pin and the 11st pin of described chip 74LS74 connect, described 8th pin of chip 74LS74 and the 12nd pin connect, the 3rd pin of described chip 74LS74 Connecting with microcontroller, the 9th pin of described chip 74LS74 draws with the 10th of chip ADC0809 Foot connects.
Above-mentioned batteries of electric automobile group monitoring system, it is characterised in that: described temperature sensor is DS18B20 temperature sensor.
Above-mentioned batteries of electric automobile group monitoring system, it is characterised in that: described communication module is serial ports Communication module or wireless communication module.
Above-mentioned batteries of electric automobile group monitoring system, it is characterised in that: described clock circuit includes core Sheet DS1302.
Above-mentioned batteries of electric automobile group monitoring system, it is characterised in that: described microcontroller includes AT89S52 single-chip microcomputer.
This utility model compared with prior art has the advantage that
1, this utility model detects in real time by arranging voltage detecting circuit, current detection circuit and gathers The voltage of cell and the total current of set of cells, to the current data gathered and plurality of voltages data difference Process, and electric current and the plurality of voltages analog data of collection sent into A/D change-over circuit and changed, Monitored and gather the temperature of cell by temperature sensor in real time, gather accuracy of information high, circuit Simply.
2, this utility model is by the way of arranging communication interface circuit and using wirelessly or non-wirelessly, by monomer electricity The Monitoring Data such as the total current of the voltage in pond and temperature and set of cells are uploaded to host computer, and practical liquid crystal touches Touch voltage and the total current parameter of temperature and set of cells of screen monitoring set of cells in real time, for exceeding threshold value Parameter, warning circuit reminds, and cutting off set of cells by the first relay is electricity in electric automobile Machine is powered, it is to avoid the overvoltage of cell and the stream of crossing of set of cells cause the damage of set of cells;By second Relay drives water-filled radiator to lower the temperature, and controls the temperature of set of cells, in certain scope, to subtract Uneven temperature distribution in baby battery group, it is ensured that the safety of electric automobile, good stability.
3, this utility model design simple in construction, reasonable in design, volume is little, simple to operate, it is achieved convenient, Practical, it is simple to promote the use of.
In sum, this utility model simple in construction, reasonable in design, monitor the electricity of cell in real time Pressure and the total current information of temperature and set of cells, it is to avoid overvoltage causes the damage of set of cells with crossing stream, passes through Radiating module is set the temperature of set of cells is controlled in certain scope, reduce uneven temperature in set of cells Degree distribution, improves performance and the life-span of set of cells, practical, it is simple to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is done and further retouches in detail State.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of this utility model voltage detecting circuit.
Fig. 3 is the circuit theory diagrams of this utility model current detection circuit.
Fig. 4 is the circuit connection diagram of this utility model A/D change-over circuit and clock division circuits.
Description of reference numerals:
1 microcontroller;2 temperature sensors;3 voltage detecting circuits;
4 A/D change-over circuits;5 current detection circuits;6 clock division circuits;
7 warning circuits;8 liquid crystal touch screens;9 first relays;
10 second relays;11 water-filled radiators;12 communication modules;
13 host computers;14 clock circuits.
Detailed description of the invention
As shown in Figure 1, Figure 2 and Figure 3, this utility model include microcontroller 1 and with microcontroller 1 The liquid crystal touch screen 8 that connects and for the communication module 12 communicated with host computer 13, described micro-control The input of device 1 processed is connected to temperature sensor 2, A/D change-over circuit 4 and clock circuit 14, described A/D The input of change-over circuit 4 is connected to the voltage detecting circuit 3 for detecting monomer battery voltage, for examining Survey the current detection circuit 5 of set of cells total current and for providing clock signal for A/D change-over circuit 4 Clock division circuits 6, the outfan of described microcontroller 1 is connected to warning circuit the 7, first relay 9 and Radiating module, described radiating module includes the second relay 10 and connects with the second relay 10 outfan Water-filled radiator 11, the input of described clock division circuits 6 and the second relay 10 is all and micro-control The outfan of device 1 processed connects, and the quantity of described temperature sensor 2 and voltage detecting circuit 3 is two Above.
During actually used, described temperature sensor 2 and the quantity of voltage detecting circuit 3 and set of cells The quantity of middle cell is identical.
Described voltage detecting circuit 3 includes that amplifier LM358, the in-phase input end of described amplifier LM358 are divided Two-way, a road connects with one end of resistance R4, and another road is through resistance R5 ground connection;Described amplifier LM358 Reverse input end divide two-way, a road connects with one end of resistance R3, another road and variable resistance R1's One end connects;The outfan of described amplifier LM358 divides two-way, the other end phase of a road and variable resistance R1 Connecing, another road connects with A/D change-over circuit 4;
Described current detection circuit 5 includes chip I NA128, and the 3rd pin of described chip I NA128 divides Two-way, a road connects with one end of resistance R2, and another road is through resistance RL1 and the one of current detection circuit 5 Individual input connects;2nd pin of described chip I NA128 divides two-way, another of a road and resistance R2 End connects, and another road is another input of current detection circuit 5;The 1st of described chip I NA128 Being connected to resistance Rg1 between pin and the 8th pin, the 6th pin of described chip I NA128 is changed with A/D Circuit 4 connects.
In physical cabling, the other end of described resistance R3 and the other end of resistance R4 respectively with cell Two ends connect, for gathering the voltage data of cell.
In physical cabling, an input Port1 of described current detection circuit 5 and current detection circuit Another input of 5 connects the two ends of battery-powered load respectively, is used for gathering set of cells output total Current data.
As shown in Figure 2, Figure 3 and Figure 4, in the present embodiment, described A/D change-over circuit 4 includes chip ADC0809, the 26th pin of described chip ADC0809 connects with the outfan of amplifier LM358, described 1st pin of chip ADC0809 connects with the 6th pin of chip I NA128, described chip ADC0809 The 25th pin, the 24th pin, the 23rd pin, the 7th pin, the 21st pin, the 20th pin, 19th pin, the 18th pin, the 8th pin, the 15th pin, the 14th pin and the 17th pin all with Microcontroller 1 connects, the 22nd pin of described chip ADC0809 and the connection end of the 6th pin and micro-control Device 1 processed connects.
As shown in Figure 1 and Figure 4, in the present embodiment, described clock division circuits 6 includes chip 74LS74, 1st pin of described chip 74LS74, the 4th pin, the 10th pin, the 13rd pin and the 14th draw Foot all connects with+5V power output end, and the 2nd pin and the 6th pin of described chip 74LS74 connect, 5th pin and the 11st pin of described chip 74LS74 connect, the 8th pin of described chip 74LS74 Connecting with the 12nd pin, the 3rd pin of described chip 74LS74 connects with microcontroller 1, described core 9th pin of sheet 74LS74 connects with the 10th pin of chip ADC0809.
In the present embodiment, described temperature sensor 2 is DS18B20 temperature sensor.
In the present embodiment, described communication module 12 is serial communication modular or wireless communication module.
In the present embodiment, described clock circuit 14 includes chip DS1302.
In the present embodiment, described microcontroller 1 includes AT89S52 single-chip microcomputer.
When this utility model uses, preset temperature threshold, monomer voltage by liquid crystal touch screen 8 Threshold value and total current threshold value, temperature sensor 2 is monitored the temperature of cell in real time and will collect Temperature sends to microcontroller 1, and microcontroller 1 is A/D change-over circuit by clock division circuits 6 4 provide clock signals, and voltage detecting circuit 3 is monitored the voltage of cell in real time and will collect Voltage signal sends into A/D change-over circuit 4, and current detection circuit 5 monitors the total current of set of cells in real time And the current signal collected is sent in A/D change-over circuit 4, through the process of A/D change-over circuit Sending into microcontroller 1 after being converted to digital quantity, microcontroller 1 is by the temperature received, voltage and electricity Stream compares with predetermined temperature threshold value, monomer voltage threshold value and total current threshold value respectively, micro- The temperature monitored in real time, voltage and current etc. information is passed through by controller 1 by communication module 12 Wired or wireless mode is uploaded to host computer 13 and is easy to staff and remotely monitors, and passes through liquid crystal Touch screen 8 shows in real time, meanwhile, the voltage of the recordable cell of clock circuit 14 and temperature and The time of the data variation such as the electric current of set of cells, it is simple to check;Carry out when temperature sensor 2 collects Temperature more than predetermined temperature threshold value time, microcontroller 1 controls the second relay 10 and works, The power supply of water-filled radiator 11 connected by second relay 10, and water-filled radiator 11 is started working, for Cell dispels the heat, and the temperature of cell is controlled in certain scope, reduces in set of cells Uneven temperature is distributed;The voltage received when microcontroller 1 exceedes monomer voltage threshold value set in advance Time, warning circuit 7 work is reported to the police, and reminds user investigation fault, and microcontroller 1 controls simultaneously First relay 9 works, and cutting off set of cells is that in electric automobile, motor is powered, it is to avoid cell overvoltage Cause the infringement of set of cells;The electric current received when microcontroller 1 exceedes total current threshold value set in advance Time, warning circuit 7 work is reported to the police, and reminds user investigation fault, and microcontroller 1 controls simultaneously First relay 9 works, and cutting off set of cells is that in electric automobile, motor is powered, it is to avoid set of cells occurred Stream causes the accident, and allows the battery of electric automobile can reach optimal performance, improves the use longevity of set of cells Life.
The above, be only preferred embodiment of the present utility model, not makees this utility model any Limit, every according to this utility model technical spirit, above example is made any simple modification, Change and equivalent structure change, all still fall within the protection domain of technical solutions of the utility model.

Claims (7)

1. batteries of electric automobile group monitoring system, it is characterised in that: include microcontroller (1) and The liquid crystal touch screen (8) that connects with microcontroller (1) and for communicating with host computer (13) Communication module (12), the input of described microcontroller (1) be connected to temperature sensor (2), A/D change-over circuit (4) and clock circuit (14), the input of described A/D change-over circuit (4) Be connected to the voltage detecting circuit for detecting monomer battery voltage (3), to be used for detecting set of cells the most electric The current detection circuit (5) flowed and the clock being used for providing clock signal for A/D change-over circuit (4) Frequency dividing circuit (6), the outfan of described microcontroller (1) be connected to warning circuit (7), first Relay (9) and radiating module, described radiating module includes the second relay (10) and with second The water-filled radiator (11) that relay (10) outfan connects, described clock division circuits (6) All outfans with microcontroller (1) connect with the input of the second relay (10), described temperature The quantity of degree sensor (2) and voltage detecting circuit (3) is two or more;
Described voltage detecting circuit (3) includes amplifier LM358, the homophase input of described amplifier LM358 End point two-way, a road connects with one end of resistance R4, and another road is through resistance R5 ground connection;Described amplifier The reverse input end of LM358 divides two-way, and a road connects with one end of resistance R3, another Lu Yuke power transformation One end of resistance R1 connects;The outfan of described amplifier LM358 divides two-way, a road and variable resistance R1 The other end connect, another road connects with A/D change-over circuit (4);
Described current detection circuit (5) includes chip I NA128, the 3rd of described chip I NA128 Pin divides two-way, and a road connects with one end of resistance R2, and another road is through resistance RL1 and current detecting One input of circuit (5) connects;2nd pin of described chip I NA128 divides two-way, a road Connecting with the other end of resistance R2, another road is another input of current detection circuit (5); Resistance Rg1, described chip it is connected between 1st pin and the 8th pin of described chip I NA128 6th pin of INA128 connects with A/D change-over circuit (4).
2. monitor system according to the batteries of electric automobile group described in claim 1, it is characterised in that: institute State A/D change-over circuit (4) and include chip ADC0809, the 26th pin of described chip ADC0809 Connect with the outfan of amplifier LM358, the 1st pin of described chip ADC0809 and chip I NA128 The 6th pin connect, the 25th pin of described chip ADC0809, the 24th pin, the 23rd draw Foot, the 7th pin, the 21st pin, the 20th pin, the 19th pin, the 18th pin, the 8th draw Foot, the 15th pin, the 14th pin and the 17th pin all connect with microcontroller (1), described core 22nd pin of sheet ADC0809 and the connection end of the 6th pin connect with microcontroller (1).
3. monitor system according to the batteries of electric automobile group described in claim 2, it is characterised in that: institute State clock division circuits (6) include the 1st pin of chip 74LS74, described chip 74LS74, 4 pins, the 10th pin, the 13rd pin and the 14th pin all connect with+5V power output end, institute The 2nd pin and the 6th pin of stating chip 74LS74 connect, the 5th pin of described chip 74LS74 Connecting with the 11st pin, the 8th pin and the 12nd pin of described chip 74LS74 connect, described 3rd pin of chip 74LS74 connects with microcontroller (1), the 9th of described chip 74LS74 Pin connects with the 10th pin of chip ADC0809.
4. monitor system according to the batteries of electric automobile group described in claim 1 or 2, it is characterised in that: Described temperature sensor (2) is DS18B20 temperature sensor.
5. monitor system according to the batteries of electric automobile group described in claim 1 or 2, it is characterised in that: Described communication module (12) is serial communication modular or wireless communication module.
6. monitor system according to the batteries of electric automobile group described in claim 1 or 2, it is characterised in that: Described clock circuit (14) includes chip DS1302.
7. monitor system according to the batteries of electric automobile group described in claim 1 or 2, it is characterised in that: Described microcontroller (1) includes AT89S52 single-chip microcomputer.
CN201620412648.4U 2016-05-09 2016-05-09 Batteries of electric vehicle organizes monitoring system Expired - Fee Related CN205610285U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107966666A (en) * 2017-10-30 2018-04-27 华南理工大学 Power battery energy expenditure detecting system in a kind of electric automobile operational process
WO2018090518A1 (en) * 2016-11-16 2018-05-24 成都信息工程大学 Apparatus for monitoring electric vehicle control system
CN108986417A (en) * 2018-05-31 2018-12-11 新乡市华西卫材有限公司 The warning device of material curtain coating compounding machine is defended in medical treatment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018090518A1 (en) * 2016-11-16 2018-05-24 成都信息工程大学 Apparatus for monitoring electric vehicle control system
CN107966666A (en) * 2017-10-30 2018-04-27 华南理工大学 Power battery energy expenditure detecting system in a kind of electric automobile operational process
CN107966666B (en) * 2017-10-30 2021-05-14 华南理工大学 Power battery energy consumption detection system in electric automobile operation process
CN108986417A (en) * 2018-05-31 2018-12-11 新乡市华西卫材有限公司 The warning device of material curtain coating compounding machine is defended in medical treatment
CN108986417B (en) * 2018-05-31 2020-09-29 新乡市华西卫材有限公司 Alarm device of medical sanitary material casting compound machine

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Granted publication date: 20160928

Termination date: 20170509