CN101615809A - A kind of single battery control system of vehicular power supply - Google Patents
A kind of single battery control system of vehicular power supply Download PDFInfo
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- CN101615809A CN101615809A CN200810115739A CN200810115739A CN101615809A CN 101615809 A CN101615809 A CN 101615809A CN 200810115739 A CN200810115739 A CN 200810115739A CN 200810115739 A CN200810115739 A CN 200810115739A CN 101615809 A CN101615809 A CN 101615809A
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- cell
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- power supply
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention provides new approaches about cell control in the vehicle power management, used a new method, the present invention adorns the two relays of putting of a hilted broadsword at the cell front end of series battery, be in and overcharged or crossed the actuating of relay when putting when the test section of the battery status of system detects certain cell, cell is opened circuit and withdraw from the loop, other normal battery works on and is unaffected.
Description
Technical field
The invention belongs to power-supply management system control field, particularly vehicle power battery control system.
Background technology
Automobile is as the product of human modern civilization, bring to the human lives convenient comfortable in, the deterioration of natural environment is had the responsibility that is difficult to shirk.The pernicious gas that automobile discharges in atmosphere every year accounts for more than 60% of air pollution total amount, and in today that the human life quality improves constantly, the human natural environment an urgent demand of depending on for existence of rescue has proposed stern challenge to developing of automobile industry.The appearance of oil electric mixed dynamic automobile is improving this situation gradually, this kind automobile has two kinds of energy to do startup, it combines the battery pack of internal combustion engine, motor and the constant volume control system by the advanced person, motor can replenish and improve vehicle start, required torque when quickening, the energy of unnecessary part power car brakeing returns battery pack and stores in the time of can absorbing power of IC engine and can not be utilized fully by generator again.
Hybrid vehicle can reduce oil consumption significantly, reduces the discharging of pollutant, has low noise, outstanding advantages such as the comprehensive utilization energy.Generally be in series for the vehicle mounted dynamic battery group by the cell of more piece larger capacity, but the reliability of its performance and its life-span become the bottleneck of vehicle power management development, reason can be summarized as 2 points: 1. owing to battery temperature in material inequality and the use in the processing and manufacturing process, life-spans etc. there are differences, certainly exist internal resistance between the battery, terminal voltage, even the performance of the isoparametric inconsistency .2. cell of capacity is good again, initial condition was inconsistent when quality was got well owing to assembled package again, the capital causes the battery pack overall permanence sharply to fail and the acceleration of part battery damages, reduced the usage level of battery pack, have a strong impact on the performance of hybrid vehicle, jeopardize the safety of hybrid vehicle.
Because the current ratio of series battery is bigger, thus most of producer to the research of power-supply management system also on battery balanced control strategy, but to really realize the optimization of battery performance, be final research direction to the control of cell.
The present invention solves is to utilize two relay and the reliable control loops put of good hilted broadsword to realize protection to the vehicle power cell.
Summary of the invention
The present invention relates to the control system of vehicle power cell protection, it mainly comprises the test section of cell parameter, by CAN bus and host computer communications portion, reaches the part to the cell protection.
System control module comprises: the battery detecting module, single-chip computer control system, the CAN bus, the RS232 communication module, input and output A the D modular converter, DC/DC module etc.
The present invention has been applicable in the more cell series loop cell has been carried out insulation blocking, in the power management as oil electric mixed dynamic automobile and pure electric-powered automobile.
Native system mainly contains three parts and constitutes, and interrelatedly between the each several part cooperatively interacts again, realizes the detection of battery parameter and finally reaches the purpose of control.
First is the part that battery parameter detects, and this part comprises the cell temperature, the detection of data such as voltage, and by A the D conversion transfer to Single Chip Microcomputer (SCM) system.
Sampling about temperature, we adopt the DS18B20 temperature sensor of being produced by U.S. DALLAS company, its performance height that possesses skills, and volume is little, be applicable to various small space apparatus figure thermometrics and control field, when detection range is-10 ℃～85 ℃ its certainty of measurement can reach ± 0.5 ℃.This temperature sensor has the ROM memory that carries, can programme to it earlier, and to each transducer label so that single-chip microcomputer discern, so can be the shared data wire of a plurality of DS18B20 transducers, in use, available digital formula temperature sensor tightly is posted on the surface of battery, because such temperature sensor has directly changed into digital quantity to analog quantity, therefore can directly join the common I/O mouth of temperature sensor and single-chip microcomputer, and need not equally need with outside modulate circuit the analog signal that collects to be adjusted with the common transducer of simulating again, so not only reduced step from data acquisition to the input Single Chip Microcomputer (SCM) system, also improved its reliability greatly, after the measurement of finishing battery pack temperature, the data of each cell of collecting are input in the Single Chip Microcomputer (SCM) system, Single Chip Microcomputer (SCM) system is carried out communication by the CAN bus of RS232 bus and host computer, thereby temperature to battery, voltage, electric current, the demonstration of battery charge state states such as (SOC), report to the police etc.
The terminal voltage of battery is the most important parameters of characterizing battery working condition, in native system, adopt same relatively reference point in series circuit, utilize the VCC of decoder (adopting three or eight decoders usually) output to make be height at 2 of each light coupling relay, by the Y of control decoder
0To Y
7It is low making 1 current potential of light coupling relay, make 3 of light coupling relay, 4 closures, thereby the circuit of forming takes turns the cell of conducting series connection takes a sample and analog-to-digital conversion, thereby reached the voltage of measuring the monomer two ends, and utilized light coupling relay to realize the isolation of digital loop and side circuit, well eliminated the problem of electromagnetic interference, this method circuit is simple, and it is comparatively accurate to measure.
One tunnel three eight decoder can be controlled the voltage sample of eight road cells, if but select a plurality of three or eight decoders for use, by changing decoder G
1, G
2A, G
2B, the pin current potential of GDN carries out the sheet choosing, so just can realize the voltage detecting of n battery.
Second portion is that Single Chip Microcomputer (SCM) system is passed through CAN bus and host computer communications portion.The state information of the cell that is collected by first is sent to Single Chip Microcomputer (SCM) system, Single Chip Microcomputer (SCM) system is generally the PIC single-chip microcomputer, deliver to host computer by the CAN bus after treatment, host computer is collected from the data of slave computer, through comparative analysis, if detect battery charge state (SOC) exceeded its rated value 80% or be lower than 30% of its rated value, host computer should guarantee that other batteries satisfy under the situation of job requirement, making corresponding decision temporarily deactivates this battery, gather battery pack total current and total voltage simultaneously at regular intervals, be generally every one second and export the highest cell voltage and numbering in the battery pack for car load CAN network, minimum cell voltage and numbering, total current, total voltage, overvoltage and undervoltage warning signal, the communication disruption alarm signal.Between the monitoring module of upper computer module and each cell by the bus RS232 realization information interchange of communicating by letter; Upper computer module is by the data sharing of CAN bus interface realization with other system.
The singlechip of finishing data processing in the detection to cell has the CAN2.0 interface, needn't increase complexity with extended chip again, and this interface can directly utilize bus to communicate by letter with host computer.
Third part is the part that cell is protected.The detection data of cell are at first passed through Single Chip Microcomputer (SCM) system; again the signal of receiving is sent in the host computer by the CAN bus; through the host computer logic determines; overcharge or cross when putting state again to the single-chip microcomputer order if battery is in; make the single-chip microcomputer pin by the control of DC/DC circuit realization to relay switch; make the corresponding cell loop of deactivating, reach the purpose of monomer protection.
The present invention can make state not the cell within allowed band withdraw from the loop and other battery operate as normal is unaffected, thereby improved the overall performance of battery pack, useful life of the battery pack of Yan Changing greatly.
Compared with prior art, the present invention has the following advantages:
1. good overcurrent ability to bear is arranged, sensitive respond is arranged;
2. this device has arc extinguishing function fast;
3. the volume of this device is less, lighter weight.
Description of drawings
Fig. 1 is a vehicle power cell control loop of the present invention.
Fig. 2 is that decoder of the present invention detects eight road monomer battery voltages detection schematic diagram.
Fig. 3 is a temperature detection schematic diagram of the present invention.
Wherein, Fig. 1 is a Figure of abstract.
Embodiment
Explain below with reference to Figure of description the present invention being done.
This programme is applied in hybrid power or the pure electric-powered automobile, in order to be implemented in the power-supply management system detection and the protection to cell, has increased the two relays of putting of hilted broadsword before each joint series connected battery, with the B of cell shown in Fig. 1
1Preceding relay R
1Be example, R
1Be a normally closed relay, its position is connected on 1,2 contact under the normal condition, if in the battery set charge/discharge process battery B
1Overshoot occurs or cross the phenomenon of putting, R
1Action makes contact 1,2 disconnect 3,4 conductings, thereby cell B
1Be disconnected and be protected, and do not influence and B
1Other normal battery charge and discharge of series connection.
In this programme, novel normally closed type relay and battery pack are series relationship, and whole management system can adopt light coupling relay to finish isolation to forceful electric power and weak electric signal, successively gating and finish monomer battery voltage is detected.
For temperature detection, native system has adopted digital DS18B20, this temperature sensor has the ROM memory that carries, can programme to it earlier, and to each transducer label so that single-chip microcomputer discern, so can be the shared data wire of a plurality of DS18B20 transducers, in use, available digital formula temperature sensor tightly is posted on the surface of battery, because such temperature sensor has directly changed into digital quantity to analog quantity, therefore can directly join the common I/O mouth of temperature sensor and single-chip microcomputer, and need not equally need with outside modulate circuit the analog signal that collects to be adjusted with the common transducer of simulating again, so not only reduced step from data acquisition to the input Single Chip Microcomputer (SCM) system, also improved its reliability greatly, after the measurement of finishing battery pack temperature, the data of each cell of collecting are input in the Single Chip Microcomputer (SCM) system, Single Chip Microcomputer (SCM) system is carried out communication by the CAN bus of RS232 bus and host computer, thereby temperature to battery, voltage, electric current, the demonstration of battery charge state states such as (SOC), report to the police etc., upper computer module is by the data sharing of CAN bus interface realization with other system.
In this programme; occur unusual if Single Chip Microcomputer (SCM) system is collected the state-of-charge of certain cell; send the order that its interface current potential is raise; be converted into 24V voltage by power supply chip DC/DC; relay coil action before the control defective mode battery; make its loop of deactivating, and then reach the purpose of protection cell.
Claims (9)
1, a kind of single battery control system of vehicular power supply comprises: the test section of cell parameter, and by CAN bus and host computer communications portion, and to cell protection part.
2, according to the single battery control system of vehicular power supply of claim 1, it is characterized in that: system control module comprises the battery detecting module, single-chip computer control system, the CAN bus, the RS232 communication module, input and output A the D modular converter, the DC/DC module.
3, according to the single battery control system of vehicular power supply of claim 1, it is characterized in that: adopt the two operating states of putting relay change cell of hilted broadsword.
4, according to the single battery control system of vehicular power supply of claim 2, it is characterized in that: adopt the two operating states of putting relay change cell of hilted broadsword.
5, according to the single battery control system of vehicular power supply of claim 3, it is characterized in that: the signal of relay coil control loop is realized via DC/DC by single-chip microcomputer.
6, according to the single battery control system of vehicular power supply of claim 4, it is characterized in that: the signal of relay coil control loop is realized via DC/DC by single-chip microcomputer.
7, according to the single battery control system of vehicular power supply of claim 1, it is characterized in that: be in the cell that overcharges or cross when putting does not influence other normal battery when deactivating the loop work.
8, according to the single battery control system of vehicular power supply of claim 2, it is characterized in that: be in the cell that overcharges or cross when putting does not influence other normal battery when deactivating the loop work.
9, according to any one single battery control system of vehicular power supply of claim 1～8, it is characterized in that: the singlechip of finishing data processing in the detection to cell has the CAN2.0 interface, and this interface can directly utilize bus to communicate by letter with host computer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810115739A CN101615809A (en) | 2008-06-27 | 2008-06-27 | A kind of single battery control system of vehicular power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810115739A CN101615809A (en) | 2008-06-27 | 2008-06-27 | A kind of single battery control system of vehicular power supply |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231550A (en) * | 2011-07-05 | 2011-11-02 | 张化锴 | Active charge/discharge balancing system of power battery and implementation method thereof |
| CN102437738A (en) * | 2011-10-27 | 2012-05-02 | 华东交通大学 | Power supply system of high voltage direct transformation electrolytic power supply and method for realizing high voltage direct transformation electrolytic power supply |
| CN103580093A (en) * | 2012-07-19 | 2014-02-12 | 福特全球技术公司 | Vehicle battery charging system and method |
| CN105509912A (en) * | 2015-12-15 | 2016-04-20 | 赵晓玲 | Vehicle-mounted battery safety detection system applied to electric vehicle |
| US9467002B2 (en) | 2012-07-19 | 2016-10-11 | Ford Global Technologies, Llc | Vehicle charging system |
| CN106655105A (en) * | 2016-12-16 | 2017-05-10 | 河南新太行电源股份有限公司 | Anti-overcharge protection apparatus for storage battery |
| CN106802686A (en) * | 2017-02-20 | 2017-06-06 | 中山市鑫中亚电源科技有限公司 | A kind of electrolysis power intelligence control system |
| CN108332895A (en) * | 2018-01-09 | 2018-07-27 | 沈阳铁路信号有限责任公司 | A kind of portable secured type relay tip pressure test recorder |
| CN111404233A (en) * | 2020-04-22 | 2020-07-10 | 安徽星玛新能源有限公司 | Battery management system |
| US10773596B2 (en) | 2012-07-19 | 2020-09-15 | Ford Global Technologies, Llc | Vehicle battery charging system and method |
| CN113728810A (en) * | 2021-09-23 | 2021-12-03 | 盐城工业职业技术学院 | Battery pack management system and control method of environment-friendly mower |
-
2008
- 2008-06-27 CN CN200810115739A patent/CN101615809A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231550B (en) * | 2011-07-05 | 2014-11-19 | 张化锴 | Active charge/discharge balancing system of power battery and implementation method thereof |
| CN102231550A (en) * | 2011-07-05 | 2011-11-02 | 张化锴 | Active charge/discharge balancing system of power battery and implementation method thereof |
| CN102437738A (en) * | 2011-10-27 | 2012-05-02 | 华东交通大学 | Power supply system of high voltage direct transformation electrolytic power supply and method for realizing high voltage direct transformation electrolytic power supply |
| CN102437738B (en) * | 2011-10-27 | 2014-03-05 | 华东交通大学 | Power supply system of high voltage direct transformation electrolytic power supply and method for realizing high voltage direct transformation electrolytic power supply |
| US9467002B2 (en) | 2012-07-19 | 2016-10-11 | Ford Global Technologies, Llc | Vehicle charging system |
| CN103580093A (en) * | 2012-07-19 | 2014-02-12 | 福特全球技术公司 | Vehicle battery charging system and method |
| US10773596B2 (en) | 2012-07-19 | 2020-09-15 | Ford Global Technologies, Llc | Vehicle battery charging system and method |
| CN105509912A (en) * | 2015-12-15 | 2016-04-20 | 赵晓玲 | Vehicle-mounted battery safety detection system applied to electric vehicle |
| CN106655105A (en) * | 2016-12-16 | 2017-05-10 | 河南新太行电源股份有限公司 | Anti-overcharge protection apparatus for storage battery |
| CN106802686A (en) * | 2017-02-20 | 2017-06-06 | 中山市鑫中亚电源科技有限公司 | A kind of electrolysis power intelligence control system |
| CN108332895A (en) * | 2018-01-09 | 2018-07-27 | 沈阳铁路信号有限责任公司 | A kind of portable secured type relay tip pressure test recorder |
| CN111404233A (en) * | 2020-04-22 | 2020-07-10 | 安徽星玛新能源有限公司 | Battery management system |
| CN113728810A (en) * | 2021-09-23 | 2021-12-03 | 盐城工业职业技术学院 | Battery pack management system and control method of environment-friendly mower |
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Open date: 20091230 |