CN107579560A - A kind of accumulator charging and discharging state detection and monitoring system - Google Patents
A kind of accumulator charging and discharging state detection and monitoring system Download PDFInfo
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- CN107579560A CN107579560A CN201710761019.1A CN201710761019A CN107579560A CN 107579560 A CN107579560 A CN 107579560A CN 201710761019 A CN201710761019 A CN 201710761019A CN 107579560 A CN107579560 A CN 107579560A
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Abstract
The invention discloses a kind of detection of accumulator charging and discharging state and monitoring system, include battery, a charge and discharge control module is provided with battery, the charge and discharge control module 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 present invention is analyzed by the change to voltage and current in battery operation, the progress of work of battery is rationally controlled, so as to ensure and improve the service life cycle of battery.
Description
Technical field
The invention belongs to field of intelligent monitoring, more particularly to a kind of detection of accumulator charging and discharging state and monitoring system.
Background technology
Battery is widely used among a variety of industrial circles and daily life, its service life and charge less,
Overcharge and put excessively 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 is mainly carried 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.At present, charging strategy mainly uses three stage charging system, the hotter mainly arteries and veins of research
Punching charging, it is intended to avoid battery charge less with overcharging；Electric discharge strategy is main by the way of threshold voltage is set, it is intended to avoids 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
TL431 structure, the space on system board is saved, reduce cost and improve the reliability of system, in power management
In be able to fast-developing and extensive use.
The content of the invention
The technical problems to be solved by the invention are that the deficiency for being directed to background provides a kind of accumulator charging and discharging state inspection
Survey and monitoring system, are analyzed by the change to voltage and current in battery operation, rationally control battery
The progress of work, so as to ensure and improve the service life cycle of battery.
The present invention uses following technical scheme to solve above-mentioned technical problem
A kind of accumulator charging and discharging state detection and monitoring system, comprising battery, are provided with a charge and discharge control on battery
Module, the charge and discharge control module include 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 civil power connects battery by charging control circuit, for controlling battery to charge；
Battery and charge/discharge control circuit, for controlling battery discharging；
Charging current detection module, terminal voltage detecting module, discharge current detection module connect with micro controller module respectively, use
In the discharge current of voltage, battery in the charging current of real-time detection battery respectively, battery, by the telecommunications of collection
Number it is uploaded to micro controller module；
Human-computer interaction module is connected 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 connects with micro controller module, charging control circuit, charge/discharge control circuit respectively, is adopted for basis
The voltage and current parameters of collection, and then drive the pwm signal of charging control circuit and charge/discharge control circuit FET；
The charging control circuit includes the boost module being sequentially connected and rectifying and voltage-stabilizing module；
The boost module includes converter, inductance, voltage-stabiliser tube, the first electrochemical capacitor, the second electrochemical capacitor, first resistor and the
Two resistance, the positive pole of the first electrochemical capacitor connect one end and the civil power of inductance respectively, the other end connection first resistor of inductance
One end, the other end of first resistor connect the positive pole of voltage-stabiliser tube and the input of converter respectively, and the negative pole of voltage-stabiliser tube connects respectively
The normal-closed end of the positive pole of the second electrochemical capacitor, the output end of converter and switch is connect, the movable end of switch is connected with second resistance
It is connected afterwards with charging circuit, the negative pole of the first electrochemical capacitor, the negative pole of the second electrochemical capacitor, earth terminal and the ground of converter connect
Connect；
The rectifying and voltage-stabilizing module includes MPU processing units, silicon controlled rectifying unit, Pulse-trigger control unit, pulse-triggered
Unit, temperature feedback unit and voltage x current variable feedback unit；
MPU processing units, Pulse-trigger control unit, pulse-triggered unit and silicon controlled rectifying unit are sequentially connected, and temperature is anti-
Feedback unit and voltage x current variable feedback unit are connected with MPU processing units respectively；
Measured by temperature value of the MPU processing units according to measured by temperature feedback unit, voltage x current variable feedback unit
Magnitude of voltage and current value, the break-make of the control signal of output adjustment pulse-triggered frequency and control Pulse-trigger control unit
Control signal.
As a kind of accumulator charging and discharging state detection of the present invention and the further preferred scheme of monitoring system, the electric power storage
The terminal voltage in pond is between the V of 10.5 V~14.0.
As a kind of accumulator charging and discharging state detection of the present invention and the further preferred scheme of monitoring system, the charging
Current detection module uses Hall sensor.
As a kind of accumulator charging and discharging state detection of the present invention and the further preferred scheme of monitoring system, the PWM
The chip model of driver is IR4427.
As a kind of accumulator charging and discharging state detection of the present invention and the further preferred scheme of monitoring system, the electric discharge
Current detection module uses Hall sensor.
The present invention compared with prior art, has following technique effect using above technical scheme：
The present invention is analyzed by the change to voltage and current in battery operation, rationally controls the work of battery
Process, so as to ensure and improve the service life cycle of battery.
Brief description of the drawings
Fig. 1 is charging control circuit boost module circuit diagram of the present invention；
Fig. 2 is charging control circuit rectifying and voltage-stabilizing modular structure schematic diagram of the present invention.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings：
A kind of accumulator charging and discharging state detection and monitoring system, comprising battery, are provided with a charge and discharge control on battery
Module, the charge and discharge control module include 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 civil power connects battery by charging control circuit, for controlling battery to charge；
Battery and charge/discharge control circuit, for controlling battery discharging；
Charging current detection module, terminal voltage detecting module, discharge current detection module connect with micro controller module respectively, use
In the discharge current of voltage, battery in the charging current of real-time detection battery respectively, battery, by the telecommunications of collection
Number it is uploaded to micro controller module；
Human-computer interaction module is connected 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 connects with micro controller module, charging control circuit, charge/discharge control circuit respectively, is adopted for basis
The voltage and current parameters of collection, and then drive the pwm signal of charging control circuit and charge/discharge control circuit FET；
The charging control circuit includes the boost module being sequentially connected and rectifying and voltage-stabilizing module；
As shown in figure 1, the boost module includes converter, inductance, voltage-stabiliser tube, the first electrochemical capacitor, the second electrochemical capacitor, the
One resistance and second resistance, the positive pole of the first electrochemical capacitor connect one end and the civil power of inductance, the other end connection of inductance respectively
One end of first resistor, the other end of first resistor connect the positive pole of voltage-stabiliser tube and the input of converter respectively, voltage-stabiliser tube
Negative pole connects the normal-closed end of the positive pole of the second electrochemical capacitor, the output end of converter and switch, the movable end of switch and respectively
It is connected after two resistant series with charging circuit, the negative pole of the first electrochemical capacitor, the negative pole of the second electrochemical capacitor, the ground connection of converter
End is connected to ground.
As shown in Fig. 2 the rectifying and voltage-stabilizing module includes MPU processing units, silicon controlled rectifying unit, Pulse-trigger control
Unit, pulse-triggered unit, temperature feedback unit and voltage x current variable feedback unit；
MPU processing units, Pulse-trigger control unit, pulse-triggered unit and silicon controlled rectifying unit are sequentially connected, and temperature is anti-
Feedback unit and voltage x current variable feedback unit are connected with MPU processing units respectively；
Measured by temperature value of the MPU processing units according to measured by temperature feedback unit, voltage x current variable feedback unit
Magnitude of voltage and current value, the break-make of the control signal of output adjustment pulse-triggered frequency and control Pulse-trigger control unit
Control signal；
The pwm driver connects with micro controller module, charging control circuit, charge/discharge control circuit respectively, is adopted for basis
The voltage and current parameters of collection, and then drive the pwm signal of charging control circuit and charge/discharge control circuit FET.
Terminal voltage changes 12 V batteries between the V of 10.5 V~14.0 in the course of the work, Chip Microcomputer A/D convert reference
Voltage is 5 V, it is therefore desirable to which sampled signal is linearly nursed one's health.The design uses resistance as 400 k Ω and 100 k Ω, essence
Spend and carry out partial pressure sampling, partial pressure coefficient k=0.2 for 1% resistance.
Accumulator cell charging and discharging electric current is obtained using Hall sensor.Because 2.5 V direct current biasings be present in the output of sensor,
To eliminate bias voltage, single-chip microcomputer conversion is reduced with calculating the time, difference channel is built using LM358, obtains actual electric current
Change voltage and carry 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
Make an uproar and compare, use 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 processing to signal.
System realizes the unified management [11,12] to accumulator charging/discharging process using PWM mode.According to FET
C-V characteristic is understood, in the saturation region of metal-oxide-semiconductor, when VGS is fixed, the influence of VDS change to IDS is little, has constant-current source
Characteristic.Therefore, the constant current output that the gate source voltage of FET can be set adaptively is adjusted by digital PI controller,
Realize multisection type modified constant-voltage charge management.In discharge process, accumulator voltage can gradually decrease down work from 13.1 V and cut
The only V of voltage 10.5 so that the output of battery is unstable.Therefore, DC load is carried out by the way of PWM pulsewidth modulations
Power supply, make battery is stable to export.
To prevent that battery to switching power circuit back discharge, utilizes the unidirectional of diode after being disconnected due to AC power
On state characteristic, prevent 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 causes circuit board component to damage, and design uses metal-oxide-semiconductor reverse-connection protection circuit, passes through resistance
R9 and voltage-regulator diode D2 provides the gate source voltage of FET.When reverse connection of accumulator, gate source voltage VGS=0, FET
Cut-off, charge circuit are disconnected.
Claims (5)
1. a kind of accumulator charging and discharging state detection and monitoring system, include battery, it is characterised in that：It is provided with battery
One charge and discharge control module, the charge and discharge control module include 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 drive
Dynamic device；
The civil power connects battery by charging control circuit, for controlling battery to charge；
Battery and charge/discharge control circuit, for controlling battery discharging；
Charging current detection module, terminal voltage detecting module, discharge current detection module connect with micro controller module respectively, use
In the discharge current of voltage, battery in the charging current of real-time detection battery respectively, battery, by the telecommunications of collection
Number it is uploaded to micro controller module；
Human-computer interaction module is connected 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 connects with micro controller module, charging control circuit, charge/discharge control circuit respectively, is adopted for basis
The voltage and current parameters of collection, and then drive the pwm signal of charging control circuit and charge/discharge control circuit FET；
The charging control circuit includes the boost module being sequentially connected and rectifying and voltage-stabilizing module；
The boost module includes and includes converter, inductance, voltage-stabiliser tube, the first electrochemical capacitor, the second electrochemical capacitor, first resistor
And second resistance, the positive pole of the first electrochemical capacitor connect one end and the civil power of inductance, the electricity of other end connection first of inductance respectively
One end of resistance, the other end of first resistor connect the positive pole of voltage-stabiliser tube and the input of converter, the negative pole point of voltage-stabiliser tube respectively
The normal-closed end of the positive pole of the second electrochemical capacitor, the output end of converter and switch, the movable end and second resistance of switch are not connected
It is connected after series connection with charging circuit, the negative pole of the first electrochemical capacitor, the negative pole of the second electrochemical capacitor, earth terminal and the ground of converter
Connection；
The rectifying and voltage-stabilizing module includes MPU processing units, silicon controlled rectifying unit, Pulse-trigger control unit, pulse-triggered
Unit, temperature feedback unit and voltage x current variable feedback unit；
MPU processing units, Pulse-trigger control unit, pulse-triggered unit and silicon controlled rectifying unit are sequentially connected, and temperature is anti-
Feedback unit and voltage x current variable feedback unit are connected with MPU processing units respectively；
Measured by temperature value of the MPU processing units according to measured by temperature feedback unit, voltage x current variable feedback unit
Magnitude of voltage and current value, the break-make of the control signal of output adjustment pulse-triggered frequency and control Pulse-trigger control unit
Control signal.
2. a kind of accumulator charging and discharging state detection according to claim 1 and monitoring system, it is characterised in that：The storage
The terminal voltage of battery is between the V of 10.5 V~14.0.
3. a kind of accumulator charging and discharging state detection according to claim 1 and monitoring system, it is characterised in that：It is described to fill
Electric current detection module uses Hall sensor.
4. a kind of accumulator charging and discharging state detection according to claim 1 and monitoring system, it is characterised in that：It is described
The chip model of pwm driver is IR4427.
5. a kind of accumulator charging and discharging state detection according to claim 1 and monitoring system, it is characterised in that：It is described to put
Electric current detection module uses Hall sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710761019.1A CN107579560A (en) | 2017-08-30 | 2017-08-30 | A kind of accumulator charging and discharging state detection and monitoring system |
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| CN201710761019.1A CN107579560A (en) | 2017-08-30 | 2017-08-30 | A kind of accumulator charging and discharging state detection and monitoring system |
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| CN107579560A true CN107579560A (en) | 2018-01-12 |
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| CN201710761019.1A Pending CN107579560A (en) | 2017-08-30 | 2017-08-30 | A kind of accumulator charging and discharging state detection and monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108614222A (en) * | 2018-07-06 | 2018-10-02 | 深圳众鑫凯科技有限公司 | A kind of battery voltage acquisition detecting system |
| CN111366880A (en) * | 2020-04-03 | 2020-07-03 | 深圳市超力源科技有限公司 | Circuit for intelligently identifying whether battery is connected or not |
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| CN1858961A (en) * | 2006-05-31 | 2006-11-08 | 北京启润世纪电子技术有限公司 | Integrated managing device and its managing method for accumulator charging and discharging |
| CN202524309U (en) * | 2012-02-20 | 2012-11-07 | 中天启明石油技术有限公司 | Rectification voltage-stabilization control circuit |
| CN104393365A (en) * | 2014-11-13 | 2015-03-04 | 无锡悟莘科技有限公司 | Waste direct current electric power recovery control system |
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2017
- 2017-08-30 CN CN201710761019.1A patent/CN107579560A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1858961A (en) * | 2006-05-31 | 2006-11-08 | 北京启润世纪电子技术有限公司 | Integrated managing device and its managing method for accumulator charging and discharging |
| CN202524309U (en) * | 2012-02-20 | 2012-11-07 | 中天启明石油技术有限公司 | Rectification voltage-stabilization control circuit |
| CN104393365A (en) * | 2014-11-13 | 2015-03-04 | 无锡悟莘科技有限公司 | Waste direct current electric power recovery control system |
Non-Patent Citations (1)
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| 汤健强，周凤星，沈春鹏: "《基于μC/OS-II 的蓄电池状态监测与智能控制系统》", 《电源技术与应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108614222A (en) * | 2018-07-06 | 2018-10-02 | 深圳众鑫凯科技有限公司 | A kind of battery voltage acquisition detecting system |
| CN111366880A (en) * | 2020-04-03 | 2020-07-03 | 深圳市超力源科技有限公司 | Circuit for intelligently identifying whether battery is connected or not |
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Application publication date: 20180112 |