CN208674892U - A kind of new-energy automobile accumulator cell charging and discharging monitoring system - Google Patents
A kind of new-energy automobile accumulator cell charging and discharging monitoring system Download PDFInfo
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- CN208674892U CN208674892U CN201820358556.1U CN201820358556U CN208674892U CN 208674892 U CN208674892 U CN 208674892U CN 201820358556 U CN201820358556 U CN 201820358556U CN 208674892 U CN208674892 U CN 208674892U
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- 238000007599 discharging Methods 0.000 title claims abstract description 28
- 238000012544 monitoring process Methods 0.000 title claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 44
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 230000003993 interaction Effects 0.000 claims abstract description 7
- 239000003990 capacitor Substances 0.000 claims description 37
- 230000015556 catabolic process Effects 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000005669 field effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 238000011897 real-time detection Methods 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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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
Abstract
The utility model discloses a kind of new-energy automobile accumulator cell charging and discharging monitoring systems, include vehicular power-bottle, voltage conversion circuit, bandpass filter module, and the vehicular power-bottle successively passes through voltage conversion circuit, bandpass filter module connection micro controller module；Vehicular power-bottle includes charging control circuit, battery, charge/discharge control circuit, charging current detection module, terminal voltage detecting module, micro controller module, discharge current detection module, human-computer interaction module, pwm driver；The utility model is analyzed by the variation to voltage and current in battery operation, rationally controls the progress of work of battery, to guarantee and improve the service life cycle of battery.
Description
Technical field
The utility model belongs to field of intelligent monitoring more particularly to a kind of new-energy automobile accumulator cell charging and discharging monitoring system
System.
Background technique
Battery is widely used in a variety of industrial circles and daily life, service life and charge less,
It overcharges and over-discharge is closely related.How to be effectively ensured and improve the service life of battery 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, hotter mainly arteries and veins is studied
Punching charging, it is intended to avoid battery charge less and overcharge；Electric discharge strategy is main by the way of threshold voltage is arranged, it is intended to avoid storing
Battery over-discharge.
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, the reliability of system is reduced costs and improve, in power management
In be able to fast development and be widely applied.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of new-energy automobile electric power storage for the deficiency of background
Pond charge-discharge monitoring system is analyzed by the variation to voltage and current in battery operation, rationally controls electric power storage
The progress of work in pond, to guarantee and improve the service life cycle of battery.
The utility model uses following technical scheme to solve above-mentioned technical problem
A kind of new-energy automobile accumulator cell charging and discharging monitoring system includes vehicular power-bottle, voltage conversion circuit, bandpass filtering
Device module, the vehicular power-bottle successively pass through voltage conversion circuit, bandpass filter module connection micro controller module；
Vehicular power-bottle includes charging control circuit, battery, charge/discharge control circuit, charging current detection module, end voltage
Detection module, micro controller module, discharge current detection module, human-computer interaction module, pwm driver；
The alternating current connects battery by charging control circuit, for controlling battery charging；
Battery and charge/discharge control circuit, for controlling electric power storage tank discharge；
Charging current detection module, terminal voltage detecting module, discharge current detection module connect with micro controller module respectively
Connect, for distinguishing the charging current of real-time detection battery, in battery voltage, battery discharge current, will acquisition
Electric signal be uploaded to micro controller module；
Human-computer interaction module is connect with micro controller module, for checking the voltage status and charging and discharging currents shape of battery
State, and for setting microcontroller parameter threshold；
The pwm driver is connected with micro controller module, charging control circuit, charge/discharge control circuit respectively, is used for root
According to the voltage and current parameter of acquisition, and then drive the pwm signal of charging control circuit and charge/discharge control circuit field-effect tube.
It is described as a kind of further preferred scheme of new-energy automobile accumulator cell charging and discharging monitoring system of the utility model
Bandpass filter module, include T-type high-pass filter, and with the concatenated Hair-pin line resonant cavity of the T-type high-pass filter；
The T-type high-pass filter includes first capacitor, the second capacitor, third capacitor, the 4th capacitor and the first inductance, institute
It states first capacitor, the second capacitor, third capacitor to be sequentially connected in series, one end of first inductance is connected to first capacitor and the second electricity
Between appearance, the other end of first inductance is grounded；One end of 4th capacitor be connected to the second capacitor and third capacitor it
Between, the other end of the 4th capacitor is grounded by the second inductance.
It is described as a kind of further preferred scheme of new-energy automobile accumulator cell charging and discharging monitoring system of the utility model
Voltage conversion circuit, including prime voltage conversion circuit and rear class voltage conversion circuit coupled thereto.
It is described as a kind of further preferred scheme of new-energy automobile accumulator cell charging and discharging monitoring system of the utility model
Prime voltage conversion circuit includes: first voltage protective module, is coupled to supply voltage and provides internal conversion voltage；First electricity
Conversion module is pressed, first voltage protective module is coupled to, input signal is converted to by prime output letter according to internal conversion voltage
Number；
It is described as a kind of further preferred scheme of new-energy automobile accumulator cell charging and discharging monitoring system of the utility model
Rear class voltage conversion circuit includes: second voltage protective module, generates the first reversed-phase output signal, the first output signal, second
Reversed-phase output signal and the second output signal, wherein prime voltage conversion circuit and rear class voltage conversion circuit have multiple crystalline substances
Body pipe, when the voltage value of supply voltage is greater than the breakdown voltage of transistor, voltage conversion circuit protects the pressure difference of transistor small
In breakdown voltage, when the voltage value of supply voltage is less than breakdown voltage, voltage conversion circuit full width exports the first anti-phase output
Signal, the first output signal, the second reversed-phase output signal and the second output signal.
It is described as a kind of further preferred scheme of new-energy automobile accumulator cell charging and discharging monitoring system of the utility model
Charging current detection module uses Hall sensor.
It is described as a kind of further preferred scheme of new-energy automobile accumulator cell charging and discharging monitoring system of the utility model
The chip model of pwm driver is IR4427.
It is described as a kind of further preferred scheme of new-energy automobile accumulator cell charging and discharging monitoring system of the utility model
Discharge current detection module uses Hall sensor.
The utility model compared with the prior art by using the above technical solution, has following technical effect that
The power supply module circuit structure of the utility model is simple, and number of devices is less, and component has high-temperature operation environment
It is required that volume compact, integral heat sink amount is smaller, is adapted for mount on that underground equipment is elongated, closed inner space, realizes to high temperature
Width funtion, broad frequency signal are adjusted, limit and protect under environment；
The utility model is analyzed by the variation to voltage and current in battery operation, rationally controls electric power storage
The progress of work in pond, to guarantee and improve the service life cycle of battery.
Detailed description of the invention
Fig. 1 is the utility model new-energy automobile accumulator cell charging and discharging monitoring system structure principle chart；
Fig. 2 is the utility model bandpass filter module circuit diagram.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
A kind of new-energy automobile accumulator cell charging and discharging monitoring system, as shown in Figure 1, including vehicular power-bottle, voltage conversion electricity
Road, bandpass filter module, the vehicular power-bottle successively pass through voltage conversion circuit, bandpass filter module connection microcontroller
Module；
Vehicular power-bottle includes charging control circuit, battery, charge/discharge control circuit, charging current detection module, end voltage
Detection module, micro controller module, discharge current detection module, human-computer interaction module, pwm driver；
The alternating current connects battery by charging control circuit, for controlling battery charging；
Battery and charge/discharge control circuit, for controlling electric power storage tank discharge；
Charging current detection module, terminal voltage detecting module, discharge current detection module connect with micro controller module respectively
Connect, for distinguishing the charging current of real-time detection battery, in battery voltage, battery discharge current, will acquisition
Electric signal be uploaded to micro controller module；
Human-computer interaction module is connect with micro controller module, for checking the voltage status and charging and discharging currents shape of battery
State, and for setting microcontroller parameter threshold；
The pwm driver is connected with micro controller module, charging control circuit, charge/discharge control circuit respectively, is used for root
According to the voltage and current parameter of acquisition, and then drive the pwm signal of charging control circuit and charge/discharge control circuit field-effect tube.
Include T-type high-pass filter as shown in Fig. 2, the bandpass filter module, and with the T-type high-pass filter
Concatenated Hair-pin line resonant cavity；
The T-type high-pass filter includes first capacitor, the second capacitor, third capacitor, the 4th capacitor and the first inductance, institute
It states first capacitor, the second capacitor, third capacitor to be sequentially connected in series, one end of first inductance is connected to first capacitor and the second electricity
Between appearance, the other end of first inductance is grounded；One end of 4th capacitor be connected to the second capacitor and third capacitor it
Between, the other end of the 4th capacitor is grounded by the second inductance.
The voltage conversion circuit, including prime voltage conversion circuit and rear class voltage conversion circuit coupled thereto.
The prime voltage conversion circuit includes: first voltage protective module, is coupled to supply voltage and provides internal turn
Change voltage；First voltage conversion module is coupled to first voltage protective module, is converted input signal according to internal conversion voltage
For prime output signal；
The rear class voltage conversion circuit includes: second voltage protective module, generates the first reversed-phase output signal, first defeated
Signal, the second reversed-phase output signal and the second output signal out, wherein prime voltage conversion circuit and rear class voltage conversion circuit
With multiple transistors, when the voltage value of supply voltage is greater than the breakdown voltage of transistor, voltage conversion circuit protects crystal
The pressure difference of pipe is less than breakdown voltage, when the voltage value of supply voltage is less than breakdown voltage, voltage conversion circuit full width output the
One reversed-phase output signal, the first output signal, the second reversed-phase output signal and the second output signal.
The charging current detection module uses Hall sensor.The chip model of the pwm driver is IR4427.Institute
Discharge current detection module is stated using Hall sensor.
12 V batteries hold voltage to change 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 2.5 V direct current biasings,
To eliminate bias voltage, reducing single-chip microcontroller conversion and calculating the time, difference channel is constructed using LM358, obtains actual electric current
It converts voltage and carries out AD sampling.
The presence of circuit noise and external interference to be mixed with various noises in AD sampled signal, 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, influence of the variation of VDS to IDS is little, has constant-current source characteristic.Cause
This, the constant current output of the available setting of gate source voltage of field-effect tube is adaptively 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 battery is unstable.Therefore, DC load is powered by the way of PWM pulsewidth modulation, is made
Battery stablizes output.
To prevent battery after disconnecting due to AC power source from utilizing the unidirectional of diode to switching power circuit back discharge
On state characteristic prevents battery 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 (8)
1. a kind of new-energy automobile accumulator cell charging and discharging monitoring system, it is characterised in that: include vehicular power-bottle, voltage conversion electricity
Road, bandpass filter module, the vehicular power-bottle successively pass through voltage conversion circuit, bandpass filter module connection microcontroller
Module；
Vehicular power-bottle includes charging control circuit, battery, charge/discharge control circuit, charging current detection module, terminal voltage detecting
Module, micro controller module, discharge current detection module, human-computer interaction module, pwm driver；
Alternating current connects battery by charging control circuit, for controlling battery charging；
Battery and charge/discharge control circuit, for controlling electric power storage tank discharge；
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, battery in the charging current of real-time detection battery respectively, battery, by the telecommunications of acquisition
Number it is uploaded to micro controller module；
Human-computer interaction module is connect with micro controller module, for checking the voltage status and charging and discharging currents state of battery,
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 the pwm signal of charging control circuit and charge/discharge control circuit field-effect tube.
2. a kind of new-energy automobile accumulator cell charging and discharging monitoring system according to claim 1, it is characterised in that: the band
Allpass filter block, include T-type high-pass filter, and with the concatenated Hair-pin line resonant cavity of the T-type high-pass filter；
The T-type high-pass filter includes first capacitor, the second capacitor, third capacitor, the 4th capacitor and the first inductance, and described
One capacitor, the second capacitor, third capacitor are sequentially connected in series, one end of first inductance be connected to first capacitor and the second capacitor it
Between, the other end of first inductance is grounded；One end of 4th capacitor is connected between the second capacitor and third capacitor, institute
The other end for stating the 4th capacitor is grounded by the second inductance.
3. a kind of new-energy automobile accumulator cell charging and discharging monitoring system according to claim 1, it is characterised in that: the electricity
Voltage conversion circuit, including prime voltage conversion circuit and rear class voltage conversion circuit coupled thereto.
4. a kind of new-energy automobile accumulator cell charging and discharging monitoring system according to claim 3, it is characterised in that: before described
Step voltage conversion circuit includes: first voltage protective module, is coupled to supply voltage and provides internal conversion voltage；First voltage
Conversion module is coupled to first voltage protective module, and input signal is converted to prime output signal according to internal conversion voltage.
5. a kind of new-energy automobile accumulator cell charging and discharging monitoring system according to claim 3, it is characterised in that: after described
Step voltage conversion circuit includes: second voltage protective module, generates the first reversed-phase output signal, the first output signal, second instead
Phase output signal and the second output signal, wherein prime voltage conversion circuit and rear class voltage conversion circuit have multiple crystal
Pipe, when the voltage value of supply voltage is greater than the breakdown voltage of transistor, the pressure difference of voltage conversion circuit protection transistor is less than
Breakdown voltage, when the voltage value of supply voltage is less than breakdown voltage, voltage conversion circuit full width exports the first anti-phase output letter
Number, the first output signal, the second reversed-phase output signal and the second output signal.
6. a kind of new-energy automobile accumulator cell charging and discharging monitoring system according to claim 1, it is characterised in that: described to fill
Electric current detection module uses Hall sensor.
7. a kind of new-energy automobile accumulator cell charging and discharging monitoring system according to claim 1, it is characterised in that: described
The chip model of pwm driver is IR4427.
8. a kind of new-energy automobile accumulator cell charging and discharging monitoring system according to claim 1, it is characterised in that: described to put
Electric current detection module uses Hall sensor.
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| CN201820358556.1U CN208674892U (en) | 2018-03-16 | 2018-03-16 | A kind of new-energy automobile accumulator cell charging and discharging monitoring system |
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| CN201820358556.1U CN208674892U (en) | 2018-03-16 | 2018-03-16 | A kind of new-energy automobile accumulator cell charging and discharging monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365653A (en) * | 2018-03-16 | 2018-08-03 | 新日(无锡)发展有限公司 | A kind of new-energy automobile accumulator cell charging and discharging monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365653A (en) * | 2018-03-16 | 2018-08-03 | 新日(无锡)发展有限公司 | A kind of new-energy automobile accumulator cell charging and discharging monitoring system |
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Granted publication date: 20190329 |