CN108382243A - A kind of accumulator of electric car monitoring system with overvoltage protection - Google Patents
A kind of accumulator of electric car monitoring system with overvoltage protection Download PDFInfo
- Publication number
- CN108382243A CN108382243A CN201810217197.2A CN201810217197A CN108382243A CN 108382243 A CN108382243 A CN 108382243A CN 201810217197 A CN201810217197 A CN 201810217197A CN 108382243 A CN108382243 A CN 108382243A
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- China
- Prior art keywords
- module
- accumulator
- control circuit
- connects
- overvoltage protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
-
- 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
-
- 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
-
- 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 discloses a kind of accumulator of electric car monitoring systems with overvoltage protection; including vehicular power-bottle, voltage conversion circuit, bandpass filter module, the vehicular power-bottle passes through voltage conversion circuit successively, bandpass filter module connects micro controller module；Vehicular power-bottle includes charging control circuit, accumulator, charge/discharge control circuit, charging current detection module, terminal voltage detecting module, micro controller module, discharge current detection module, touch screen module, pwm driver；The present invention rationally controls the progress of work of accumulator by analyzing the variation of voltage and current in battery operation, to ensure and improve the service life cycle of accumulator.
Description
Technical field
The invention belongs to field of intelligent monitoring more particularly to a kind of accumulator of electric car with overvoltage protection to monitor system
System.
Background technology
Accumulator is widely used in a variety of industrial circles and daily life, service life and charge less,
It overcharges and puts excessively closely related.How to be effectively ensured and improve the service life of accumulator is in battery management system design
Urgent problem.
The design of battery management system mainly carries out in terms of being charged and discharged two, and different application scenarios are taken
Charge and discharge control strategy also emphasize particularly on different fields.Currently, charging strategy mainly uses three stage charging system, the hotter mainly arteries and veins of research
Punching charging, it is intended to avoid accumulator charge less and overcharge；Electric discharge strategy is main by the way of threshold voltage is arranged, it is intended to avoid storing
Battery, which is crossed, to be put.
Switching Power Supply is widely used in almost all of electronic equipment with the features such as small-sized, light weight and high efficiency, is to work as
Modern electronics and information industry develops rapidly a kind of indispensable power mode.Primary side feedback Switching Power Supply adds because saving optocoupler
The structure of TL431 saves the space on system board, reduces cost and improves the reliability of system, in power management
In be able to fast-developing and extensive use.
Invention content
It is a kind of electronic with overvoltage protection the technical problem to be solved by the present invention is to be provided for the deficiency of background
Automobile storage battery monitoring system, by analyzing the variation of voltage and current in battery operation, rationally control stores
The progress of work of battery, to ensure and improve the service life cycle of accumulator.
The present invention uses following technical scheme to solve above-mentioned technical problem
A kind of accumulator of electric car monitoring system with overvoltage protection, including charging control circuit, accumulator, control of discharge
Circuit, charging current detection module, terminal voltage detecting module, micro controller module, discharge current detection module, touch screen mould
Block, pwm driver, gsm module, input/output module, alarm module and power-off modular；
Alternating current connects accumulator by charging control circuit；Accumulator and charge/discharge control circuit, charging current detection module, end electricity
Pressure detection module, discharge current detection module are connected with micro controller module respectively；Touch screen module connects with micro controller module
It connects；
The pwm driver is connected with micro controller module, charging control circuit, charge/discharge control circuit respectively；The GSM moulds
Block, input/output module, alarm module and power-off modular are connect with micro controller module respectively.
As a kind of further preferred scheme of the accumulator of electric car monitoring system with overvoltage protection of the present invention, institute
State charging control circuit include signal control terminal, charge power supply end, equipment feeder ear, battery-end, triode, the first metal-oxide-semiconductor and
Second metal-oxide-semiconductor；Wherein, the charge power supply end is grounded by concatenated first resistor and second resistance；The base of the triode
Pole is separately connected the signal control terminal and charge power supply end, and the collector of the triode connects described the by the 4th resistance
The grid of two metal-oxide-semiconductors also connects the source electrode of first metal-oxide-semiconductor, the emitter ground connection of the triode by 3rd resistor；Institute
The source electrode for stating the second metal-oxide-semiconductor connects the charge power supply end by the first diode, and drain electrode connects the equipment feeder ear；It is described
The source electrode of first metal-oxide-semiconductor connects the charge power supply end by the first diode, and grid connects the first resistor and the second electricity
The tie point of resistance, drain electrode connect the battery-end.
As a kind of further preferred scheme of the accumulator of electric car monitoring system with overvoltage protection of the present invention, institute
It states charging current detection module and uses Hall sensor.
As a kind of further preferred scheme of the accumulator of electric car monitoring system with overvoltage protection of the present invention, institute
The chip model for stating pwm driver is IR4427.
As a kind of further preferred scheme of the accumulator of electric car monitoring system with overvoltage protection of the present invention, institute
It states discharge current detection module and uses Hall sensor.
The present invention has the following technical effects using above technical scheme is compared with the prior art：
The power supply module circuit structure of the present invention is simple, and number of devices is less, and component has high-temperature operation environmental requirement, volume
Compact, integral heat sink amount is smaller, is adapted for mount on that underground equipment is elongated, closed inner space, realizes to wide under hot environment
Voltage, broad frequency signal are adjusted, limit and protect；
The present invention, by carrying out early warning to the detection of voltage, has by setting voltage threshold, setting alarm section to accumulator
The problems such as avoiding overvoltage to effect；
The present invention rationally controls the work of accumulator by analyzing the variation of voltage and current in battery operation
Process, to ensure and improve the service life cycle of accumulator.
Description of the drawings
Fig. 1 is accumulator of electric car monitoring system structure principle chart of the present invention；
Fig. 2 is charging control circuit circuit diagram of the present invention.
Specific implementation mode
Technical scheme of the present invention is described in further detail below in conjunction with the accompanying drawings：
A kind of accumulator of electric car monitoring system with overvoltage protection, as described in Figure 1, including charging control circuit, electric power storage
Pond, charge/discharge control circuit, charging current detection module, terminal voltage detecting module, micro controller module, discharge current detect mould
Block, touch screen module, pwm driver, gsm module, input/output module, alarm module and power-off modular；
Alternating current connects accumulator by charging control circuit, for controlling accumulator charging；
Accumulator and charge/discharge control circuit, for controlling battery discharging；
Charging current detection module, terminal voltage detecting module, discharge current detection module are connected with micro controller module respectively, are used
In the discharge current of voltage, accumulator in the charging current of real-time detection accumulator respectively, accumulator, by the telecommunications of acquisition
Number it is uploaded to micro controller module；
Touch screen module is connect with micro controller module, the voltage status for checking accumulator and charging and discharging currents state, with
And for setting microcontroller parameter threshold；
The pwm driver is connected with micro controller module, charging control circuit, charge/discharge control circuit respectively, is adopted for basis
The voltage and current parameter of collection, and then drive charging control circuit and the pwm signal of charge/discharge control circuit field-effect tube；
The gsm module, input/output module, alarm module and power-off modular are connect with micro controller module respectively, wherein defeated
Enter output module for setting voltage threshold, the alarm module is for sending out alarm, and the GSM with user for leading to
Letter, is uploaded to user, the timely deenergization of power-off modular terminates the charging of accumulator, effectively keeps away by battery tension parameter
Exempt from should not damage.
As shown in Fig. 2, the charging control circuit includes signal control terminal, charge power supply end, equipment feeder ear, battery
End,
Triode, the first metal-oxide-semiconductor and the second metal-oxide-semiconductor；Wherein, the charge power supply end passes through concatenated first resistor and the second electricity
Resistance ground connection；The base stage of the triode is separately connected the signal control terminal and charge power supply end, the collector of the triode
The grid of second metal-oxide-semiconductor is connected by the 4th resistance, and the source electrode of first metal-oxide-semiconductor, institute are also connected by 3rd resistor
State the emitter ground connection of triode；The source electrode of second metal-oxide-semiconductor connects the charge power supply end, drain electrode by the first diode
Connect the equipment feeder ear；The source electrode of first metal-oxide-semiconductor connects the charge power supply end by the first diode, and grid connects
The tie point of the first resistor and second resistance is connect, drain electrode connects the battery-end.
The charging current detection module uses Hall sensor.The chip model of the pwm driver is IR4427, institute
It states discharge current detection module and uses Hall sensor.
Terminal voltage changes 12 V accumulators between the V of 10.5 V~14.0 during the work time, Chip Microcomputer A/D convert reference
Voltage is 5 V, it is therefore desirable to linearly be improved sampled signal.The design uses resistance value for 400 k Ω and 100 k Ω, essence
Degree carries out partial pressure sampling for 1% resistance, divides coefficient k=0.2.
Accumulator cell charging and discharging electric current is obtained using Hall sensor.Since the output of sensor is there are 2.5V direct current biasings,
To eliminate bias voltage, reducing microcontroller conversion and calculating the time, difference channel is built using LM358, obtains actual electric current
It converts voltage and carries out AD samplings.
The presence of circuit noise and external interference to be mixed with various noises in AD sampled signals, to improve sampled signal letter
It makes an uproar ratio, uses Butterworth LPF design method to devise cut-off frequecy of passband as 100 Hz herein, stopband cutoff frequency
Rate is 500 Hz, and the second order active low-pass filter that output gain is 1 is filtered signal.
System realizes the unified management to accumulator charging/discharging process using PWM mode.It is special according to the volt-ampere of field-effect tube
Property it is found that in the saturation region of metal-oxide-semiconductor, when VGS is fixed, the influence of the variation of VDS to IDS is little, has constant-current source characteristic.Cause
This, the constant current output that the gate source voltage of field-effect tube can be set adaptively is adjusted by digital PI controller, is realized more
Segmentation modified constant-voltage charge management.In discharge process, accumulator voltage can gradually decrease down work blanking voltage from 13.1 V
10.5 V so that the output of accumulator is unstable.Therefore, DC load is powered by the way of PWM pulsewidth modulations, is made
Accumulator stablizes output.
To prevent accumulator after being disconnected due to AC power from utilizing the unidirectional of diode to switching power circuit back discharge
On state characteristic prevents accumulator from inversely discharging by concatenating Schottky diode MBR20100 in the loop.Simultaneously, it is contemplated that store
Battery is likely to occur reversal connection when accessing, and circuit board component is caused to damage, and design uses metal-oxide-semiconductor reverse-connection protection circuit, passes through resistance
R9 and zener diode D2 provides the gate source voltage of field-effect tube.When reverse connection of accumulator, gate source voltage VGS=0, field-effect tube
Cut-off, charge circuit are disconnected.
Claims (5)
1. a kind of accumulator of electric car monitoring system with overvoltage protection, it is characterised in that：Including charging control circuit, storage
Battery, charge/discharge control circuit, charging current detection module, terminal voltage detecting module, micro controller module, discharge current detect mould
Block, touch screen module, pwm driver, gsm module, input/output module, alarm module and power-off modular；
Alternating current connects accumulator by charging control circuit；Accumulator and charge/discharge control circuit, charging current detection module, end electricity
Pressure detection module, discharge current detection module are connected with micro controller module respectively；Touch screen module connects with micro controller module
It connects；
The pwm driver is connected with micro controller module, charging control circuit, charge/discharge control circuit respectively；The GSM moulds
Block, input/output module, alarm module and power-off modular are connect with micro controller module respectively.
2. a kind of accumulator of electric car monitoring system with overvoltage protection according to claim 1, it is characterised in that：
The charging control circuit includes signal control terminal, charge power supply end, equipment feeder ear, battery-end, triode, the first metal-oxide-semiconductor
With the second metal-oxide-semiconductor；Wherein, the charge power supply end is grounded by concatenated first resistor and second resistance；The triode
Base stage is separately connected the signal control terminal and charge power supply end, and the collector of the triode passes through described in the connection of the 4th resistance
The grid of second metal-oxide-semiconductor also connects the source electrode of first metal-oxide-semiconductor, the emitter ground connection of the triode by 3rd resistor；
The source electrode of second metal-oxide-semiconductor connects the charge power supply end by the first diode, and drain electrode connects the equipment feeder ear；Institute
The source electrode for stating the first metal-oxide-semiconductor connects the charge power supply end by the first diode, and grid connects the first resistor and second
The tie point of resistance, drain electrode connect the battery-end.
3. a kind of accumulator of electric car monitoring system with overvoltage protection according to claim 1, it is characterised in that：
The charging current detection module uses Hall sensor.
4. a kind of accumulator of electric car monitoring system with overvoltage protection according to claim 1, it is characterised in that：
The chip model of the pwm driver is IR4427.
5. a kind of accumulator of electric car monitoring system with overvoltage protection according to claim 1, it is characterised in that：
The discharge current detection module uses Hall sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810217197.2A CN108382243A (en) | 2018-03-16 | 2018-03-16 | A kind of accumulator of electric car monitoring system with overvoltage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810217197.2A CN108382243A (en) | 2018-03-16 | 2018-03-16 | A kind of accumulator of electric car monitoring system with overvoltage protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108382243A true CN108382243A (en) | 2018-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810217197.2A Withdrawn CN108382243A (en) | 2018-03-16 | 2018-03-16 | A kind of accumulator of electric car monitoring system with overvoltage protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108382243A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647313A (en) * | 2013-11-29 | 2014-03-19 | 广州视源电子科技股份有限公司 | A charging control circuit |
| DE102016104617A1 (en) * | 2016-03-14 | 2017-09-14 | Borgward Trademark Holdings Gmbh | Power control system |
| CN107332324A (en) * | 2017-08-29 | 2017-11-07 | 邢建强 | Charging electric car storage battery charge-discharge control system based on AC DC conversion equipments |
| CN107394864A (en) * | 2017-08-29 | 2017-11-24 | 邢建强 | A kind of accumulator of electric car charging and discharging state monitoring system |
| CN208198134U (en) * | 2018-03-16 | 2018-12-07 | 新日(无锡)发展有限公司 | A kind of accumulator of electric car monitoring system with overvoltage protection |
-
2018
- 2018-03-16 CN CN201810217197.2A patent/CN108382243A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647313A (en) * | 2013-11-29 | 2014-03-19 | 广州视源电子科技股份有限公司 | A charging control circuit |
| DE102016104617A1 (en) * | 2016-03-14 | 2017-09-14 | Borgward Trademark Holdings Gmbh | Power control system |
| CN107332324A (en) * | 2017-08-29 | 2017-11-07 | 邢建强 | Charging electric car storage battery charge-discharge control system based on AC DC conversion equipments |
| CN107394864A (en) * | 2017-08-29 | 2017-11-24 | 邢建强 | A kind of accumulator of electric car charging and discharging state monitoring system |
| CN208198134U (en) * | 2018-03-16 | 2018-12-07 | 新日(无锡)发展有限公司 | A kind of accumulator of electric car monitoring system with overvoltage protection |
Non-Patent Citations (1)
| Title |
|---|
| 汤健强 等: "基于μC/OS-Ⅱ的蓄电池状态检测与智能控制系统" * |
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| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180810 |
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| WW01 | Invention patent application withdrawn after publication |