CN115441133A - Automatic liquid feeding system of automobile-used battery of liquid feeding - Google Patents
Automatic liquid feeding system of automobile-used battery of liquid feeding Download PDFInfo
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- CN115441133A CN115441133A CN202211229548.4A CN202211229548A CN115441133A CN 115441133 A CN115441133 A CN 115441133A CN 202211229548 A CN202211229548 A CN 202211229548A CN 115441133 A CN115441133 A CN 115441133A
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- 239000007788 liquid Substances 0.000 title claims abstract description 181
- 238000007600 charging Methods 0.000 claims abstract description 74
- 238000010277 constant-current charging Methods 0.000 claims abstract description 14
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims description 16
- 101000908580 Homo sapiens Spliceosome RNA helicase DDX39B Proteins 0.000 claims description 15
- 102100021298 b(0,+)-type amino acid transporter 1 Human genes 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 102100032982 CCR4-NOT transcription complex subunit 9 Human genes 0.000 claims description 4
- 101000942590 Homo sapiens CCR4-NOT transcription complex subunit 9 Proteins 0.000 claims description 4
- 101001026582 Homo sapiens KAT8 regulatory NSL complex subunit 3 Proteins 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention belongs to the field of automatic liquid adding systems, and particularly relates to an automatic liquid adding system of a storage battery for a liquid adding vehicle, which comprises a liquid adding and returning module, a singlechip peripheral module, a power supply module and a singlechip system control module; the liquid feeding and returning module comprises a liquid feeding assembly and a liquid returning assembly, and the liquid feeding assembly and the liquid returning assembly are both connected with the single chip microcomputer system control module and are controlled by the single chip microcomputer system control module to automatically feed liquid or automatically return liquid; the singlechip peripheral module comprises a liquid crystal display module, a key man-machine operation module, a voice storage and broadcast module and a record storage and query module; the power supply module comprises a battery backup power supply unit and a commercial power charging management unit, wherein the battery backup power supply unit and the commercial power charging management unit are used for realizing constant current charging of a backup battery in different charging states; the single chip microcomputer system control module comprises the single chip microcomputer, and the service life of the backup battery of the liquid adding vehicle can be prolonged, and the functionality of the liquid adding vehicle can be improved.
Description
Technical Field
The invention relates to an automatic liquid adding system, in particular to an automatic liquid adding system for a storage battery of a liquid adding vehicle.
Background
As is well known, the storage battery can take place chemical reaction in the use, and the chemical reaction that its self takes place can consume the inside electrolyte solvent of storage battery, need supply distilled water or deionized water after using a period, makes electrolyte keep reasonable density, consequently, replaces the manual work to carry out the automatic liquid feeding car of storage battery liquid feeding maintenance and takes place.
However, the liquid adding vehicle is used for maintaining the liquid adding of the storage battery and needs a backup battery for supporting power supply, the existing liquid adding vehicle is lack of maintenance of the backup battery, and the service life of the backup battery can be shortened due to the loss of the liquid adding vehicle to the backup battery in the working process; and the existing liquid adding vehicle only carries out liquid adding maintenance on the storage battery, and the function is single.
Disclosure of Invention
The invention aims to provide an automatic liquid adding system for a storage battery of a liquid adding vehicle, which reduces the loss of a backup battery per se and prolongs the service life of the backup battery in the working process of the liquid adding vehicle; the functionality of the liquid adding vehicle is improved by adding peripheral equipment.
The invention provides the following technical scheme:
the utility model provides an automatic liquid feeding system of automobile-used battery of liquid feeding, includes that the liquid feeding returns liquid module, singlechip peripheral hardware module, power module, single chip microcomputer system control module, its characterized in that:
the liquid feeding and returning module comprises a liquid feeding assembly and a liquid returning assembly, and the liquid feeding assembly and the liquid returning assembly are both connected with the single chip microcomputer system control module and are controlled by the single chip microcomputer system control module to automatically feed liquid or automatically return liquid;
the single chip microcomputer peripheral module comprises a liquid crystal display module, a key man-machine operation module, a voice storage and broadcast module and a record storage and query module, and the liquid crystal display module, the key man-machine operation module, the voice storage and broadcast module and the record storage and query module are all electrically connected with the single chip microcomputer system control module; the liquid crystal display module uses a Chinese display liquid crystal module to display liquid adding numerical values in real time, the key man-machine operation module can manually set the liquid adding numerical values and a one-key switch machine, the voice storage broadcasting module carries out voice prompt when the running state of the machine is switched, the recording storage inquiring module automatically memorizes the running records of the machine, and the using and maintaining conditions of the machine can be tracked;
the power module comprises a battery backup power supply unit and a commercial power charging management unit, wherein: the battery backup power supply unit for supplying power to the operation of the liquid adding vehicle is electrically connected with the single chip microcomputer system control module; the commercial power charging management unit is used for providing numerical control constant current charging management for the battery backup power supply unit and is electrically connected with the battery backup power supply unit; the backup battery can be a lead-acid sealed battery, a ternary polymer lithium battery, a lithium iron phosphate battery and the like;
the single chip microcomputer system control module comprises a single chip microcomputer, and the single chip microcomputer uses an ARM chip of a Cortex-M3 inner core.
Preferably, the liquid adding assembly comprises a liquid storage tank, a filter A, a liquid adding pump and a flowmeter;
the liquid adding pump is subjected to PID closed-loop control by a singlechip to form stable rotating speed, so that constant water flow is formed in the pipeline;
the flowmeter is connected with the signal of the singlechip through a GPIO port, the flowmeter uses a general turbine flowmeter to output pulse waveforms with different frequencies under different flow rates of liquid, and the singlechip acquires the pulse number through the GPIO port so as to calculate the volume of the liquid in the pipeline in unit time;
the liquid to be added in the liquid storage tank sequentially passes through the filter A, the liquid adding pump and the flowmeter through the connecting water pipe and enters the storage battery of the electric vehicle, different water pipe lengths of 4 meters, 6 meters, 10 meters and the like can be selected, the system has different pressure compensation, and the liquid to be added can be selected from non-viscous liquid such as cooling liquid, lubricating oil, diluent oil and the like.
Preferably, the liquid return assembly comprises a liquid return valve, a filter B and a liquid return tank;
the liquid in the electric vehicle storage battery sequentially passes through the liquid return valve and the filter B through the connecting water pipe to reach the liquid return tank, and the liquid return valve can be used for cutting off or opening a liquid adding pipeline passage and keeping the pressure in the storage battery and other devices unchanged;
the liquid return box is also provided with a liquid level sensor and an electromagnetic valve, the liquid level sensor is in signal connection with the single chip microcomputer system control module, the liquid level sensor uses an infrared sensor with a 45-degree conical glass interface, the electromagnetic valve is electrically connected with the single chip microcomputer, the electromagnetic valve is in a closed state in the liquid adding process and is used for keeping the pressure in the liquid return box equal to the pressure in the storage battery, and after liquid adding is completed, the electromagnetic valve is automatically opened and is used for providing an air inlet channel for the liquid discharge pump and pumping away the liquid in the liquid return box;
a liquid discharge pump and a waste liquid collecting bottle are also arranged outside the liquid return box;
the liquid discharge pump is subjected to PID closed-loop control by a singlechip;
the waste liquid in the liquid return box is pumped into a waste liquid recovery bottle through a liquid discharge pump.
Preferably, the battery backup power supply unit comprises a single-resistor bidirectional sampling circuit, after the single chip microcomputer detects that the charging condition is met, the charging switch module SW1 is closed to form a charging loop, and the single chip microcomputer automatically controls the magnitude of the output current according to the type of the battery, the terminal voltage of the battery and the charging current, so that switching of different states such as uniform charging, floating charging, trickle charging and the like is realized;
the single-resistor bidirectional sampling circuit comprises a charging switch module SW1, a backup power supply battery BAT1, a Current sampling resistor RS1, an operational amplifier U4A, a resistor RF1 and a resistor R6, wherein a signal end of the charging switch module SW1 is connected with a Charge pin of a single chip microcomputer, one end of the charging switch module SW1 is connected with the positive electrode of the backup power supply battery BAT1, the negative electrode of the backup power supply battery BAT1 is connected with the in-phase input end of the operational amplifier U4A, the negative electrode of the backup power supply battery BAT1 is further connected with the Current sampling resistor RS1, the resistor RF1 is connected in series between the reverse input end and the output end of the operational amplifier U4A, the reverse input end of the operational amplifier U4A is further connected with the resistor R6, the output end of the operational amplifier U4A is further connected with the Current pin of the single chip microcomputer, and the other end of the resistor RS1, the other end of the resistor R6 and the negative electrode of the operational amplifier U4A are all grounded.
Preferably, the battery backup power supply unit further comprises a charging judgment circuit, the single chip microcomputer collects charging voltage and current of the storage battery through the ADC unit, and then adjusts the charging output voltage and current through the DAC unit in a closed loop manner, so that digital control is realized;
the charging judgment circuit comprises a resistor R2, a resistor R3, a resistor R4, a resistor R5, an operational amplifier U4B and an isolation diode D5, one end of the charging switch module SW1, which is connected with the power supply battery BAT1, is sequentially connected with the resistor R4 and the resistor R5 in series and then is grounded, the other end of the charging switch module SW1 is also sequentially connected with the resistor R2 and the resistor R3 in series and then is grounded, the non-grounded end of the resistor R5 is connected with an ADC _ BAT pin of the single chip microcomputer, the non-grounded end of the resistor R3 is connected with an ADC _ DC pin of the single chip microcomputer, a DAC pin of the single chip microcomputer is connected with the reverse input end of the operational amplifier U4B, a Current pin of the single chip microcomputer is connected with the non-phase input end of the operational amplifier U4B, the output end of the operational amplifier U4B is connected with the isolation diode D5, the positive power supply end of the operational amplifier U4B is connected with a 5V power supply, the negative electrode of the operational amplifier U4B is grounded, and the operational amplifier U4A and the operational amplifier U4B are a sop-8 packaged operational amplifier.
Preferably, the mains supply charging management unit comprises a mains supply existence detection circuit, when a mains supply exists, after the mains supply exists and is subjected to resistance-capacitance voltage reduction and rectifier bridge series voltage stabilization, a diode IN the optical coupler emits light, internal switching tubes of a third pin and a fourth pin are conducted after receiving optical signals, the state of an AC _ IN pin of the single chip microcomputer is changed from a high level to a low level, and due to the existence of circuits such as rectification filtering and the like, the single chip microcomputer can directly identify that the mains supply exists without time delay IN the state judgment;
the utility model provides a commercial power has detection circuitry includes commercial power input interface AC _ CZ1, control switch SW, electric capacity C10, resistance R7, rectifier bridge BG2, electric capacity C9, resistance R8, stabilivolt D7, opto-coupler OP2, resistance R9, commercial power input interface AC _ CZ 1's live wire end is connected with control switch SW, it has resistance R7 to establish ties IN control switch SW's the other end and one of them AC input end of rectifier bridge BG2, resistance R7's both ends parallel connection electric capacity C10, another AC input end and commercial power input interface AC _ CZ 1's zero line end are connected to rectifier bridge BG 2's another AC input end, be connected with electric capacity C9 and resistance R8 on rectifier bridge BG 2's the direct current output positive pole end, resistance R8's the other end is connected with stabilivolt D7's negative pole and No. CZ pin of opto-coupler 2, rectifier bridge BG 2's direct current output negative pole end is connected with electric capacity C9's the other end, stabilivolt D7's positive pole and No. 2 pin and No. CZ pin, OP 2's No. 3 single-chip microcomputer is connected with the resistance R9 voltage that the other end is connected with the opto-coupler OP 3. The single chip microcomputer.
Preferably, the utility power charging management unit further comprises a backup battery constant current charging circuit, which is disclosed in chinese patent "CN216357401U" -a high-precision intelligent numerical control utility power LED constant current source based on a single chip microcomputer, and is not described herein;
the backup battery constant-current charging circuit comprises a high-frequency transformer BT1, the high-frequency transformer BT1 comprises a primary winding N1, clamping circuit absorption networks RCD1 are arranged at two ends of the primary winding N1, one end, connected with a resistor R2, of a charging switch module SW1 in a single-resistor bidirectional sampling circuit is connected with the negative electrode of a rectifier diode D3, and the negative electrode of a separation diode D5 in a charging judgment circuit is connected with the input end of an output voltage stabilization network U5.
Preferably, the single chip microcomputer system control module further comprises a one-key downloading circuit, the one-key downloading circuit is electrically connected with the single chip microcomputer, and the one-key downloading circuit is disclosed in chinese patent CN214623355U, a one-key downloading circuit, which is not described herein again.
The invention has the beneficial effects that:
1) The battery backup power supply unit and the commercial power charging management unit are used for carrying out constant current charging on the backup battery, acquiring the state of the backup battery in real time, switching different charging states according to different states of the backup battery, reducing the working loss of the backup battery and prolonging the service life of the battery.
2) The multifunctional liquid crystal display device can realize multiple functions through the liquid crystal display module, the key man-machine operation module, the voice storage broadcasting module and the record storage query module, and is more convenient to operate.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a circuit schematic of the power module of the present invention;
FIG. 3 is a circuit schematic of the present invention;
FIG. 4 is a flow chart of the control of the liquid adding vehicle;
notation in the figure: the system comprises a liquid feeding and returning module 1, a single chip microcomputer peripheral module 2, a power module 3 and a single chip microcomputer system control module 4.
Detailed Description
Example 1
As shown in fig. 1 to 4, the automatic liquid adding system for a liquid adding vehicle storage battery in this embodiment 1 comprises a liquid adding and returning module 1, a single chip microcomputer peripheral module 2, a power module 3, and a single chip microcomputer system control module 4.
The liquid feeding and returning module 1 comprises a liquid feeding assembly and a liquid returning assembly, wherein the liquid feeding assembly and the liquid returning assembly are both connected with the single chip microcomputer system control module 4 and are controlled by the single chip microcomputer system control module 4 to automatically feed liquid or automatically return liquid.
The single chip microcomputer peripheral module 2 comprises a liquid crystal display module, a key man-machine operation module, a voice storage and broadcast module and a record storage and query module, and the liquid crystal display module, the key man-machine operation module, the voice storage and broadcast module and the record storage and query module are all electrically connected with the single chip microcomputer system control module 4; the liquid crystal display module uses a Chinese display liquid crystal module to display liquid feeding numerical values in real time, the key man-machine operation module can manually set the liquid feeding numerical values and a key switch machine, the voice storage broadcasting module carries out voice prompt when the running state of the machine is switched, the recording storage inquiry module automatically memorizes the running records of the machine, and the use and maintenance conditions of the machine can be tracked.
Example 2
On the basis of example 1, as shown in fig. 1, the charging assembly comprises a liquid storage tank, a filter a, a charging pump and a flowmeter.
The liquid adding pump is controlled by a singlechip to perform PID closed-loop control to form stable rotating speed, so that constant water flow is formed in the pipeline.
The flowmeter is connected with the GPIO port of the single chip microcomputer through signals, the flowmeter uses a general turbine flowmeter to output pulse waveforms with different frequencies under different flow rates of liquid, and the single chip microcomputer collects the pulse number through the GPIO port, so that the volume of the liquid in the pipeline in unit time is calculated.
The liquid to be added in the liquid storage tank sequentially passes through the filter A, the liquid adding pump and the flowmeter through the connecting water pipe and enters the storage battery of the electric vehicle, different water pipe lengths of 4 meters, 6 meters, 10 meters and the like can be selected, the system has different pressure compensation, and the liquid to be added can be selected from non-viscous liquid such as cooling liquid, lubricating oil, diluent oil and the like.
The liquid return assembly comprises a liquid return valve, a filter B and a liquid return tank.
The liquid in the accumulator of electric car is passed through the liquid return valve and filter B in turn to the liquid return tank, and the liquid return valve can be used to cut off or open the pipeline for adding liquid and keep the pressure in the accumulator, etc. constant.
Still be equipped with level sensor and solenoid valve on returning the liquid case, level sensor and 4 signal connection of single chip microcomputer system control module, level sensor uses the infrared sensor at 45 degrees toper glass interfaces, solenoid valve and single chip microcomputer electric connection, at the liquid feeding in-process, the solenoid valve is closed state for keep returning the pressure of liquid incasement and the pressure of battery inside equal, after the liquid feeding is accomplished, the solenoid valve is automatic to be opened, be used for providing an inlet channel for the flowing back pump, can take away the liquid of returning the liquid incasement.
A liquid discharge pump and a waste liquid collecting bottle are also arranged outside the liquid return box.
The liquid discharge pump is subjected to PID closed-loop control by a singlechip.
The waste liquid in the liquid return box is pumped into a waste liquid recovery bottle through a liquid discharge pump.
The other structure of this embodiment is the same as embodiment 1.
Example 3
Based on embodiment 2, as shown in fig. 2, the battery backup power supply unit includes a single-resistor bidirectional sampling circuit, after the single chip detects that the charging condition is satisfied, the charging switch module SW1 is closed to form a charging loop, and the single chip automatically controls the magnitude of the output current according to the type of the battery, the terminal voltage of the battery and the charging current, so as to realize the switching of different states such as uniform charging, floating charging, trickle charging and the like.
The single-resistor bidirectional sampling circuit comprises a charging switch module SW1, a backup power supply battery BAT1, a Current sampling resistor RS1, an operational amplifier U4A, a resistor RF1 and a resistor R6, wherein a signal end of the charging switch module SW1 is connected with a Charge pin of a single chip microcomputer, one end of the charging switch module SW1 is connected with a positive electrode of the backup power supply battery BAT1, a negative electrode of the backup power supply battery BAT1 is connected with a non-inverting input end of the operational amplifier U4A, the negative electrode of the backup power supply battery BAT1 is also connected with the Current sampling resistor RS1, the resistor RF1 is connected between an inverting input end and an output end of the operational amplifier U4A in series, the inverting input end of the operational amplifier U4A is also connected with the resistor R6, the output end of the operational amplifier U4A is also connected with a Current pin of the single chip microcomputer, and the other end of the resistor RS1, the other end of the resistor R6 and a negative power source end of the operational amplifier U4A are all grounded.
The battery backup power supply unit also comprises a charging judgment circuit, the single chip microcomputer collects the charging voltage and current of the storage battery through the ADC unit, and then adjusts the charging output voltage and current through the DAC unit in a closed loop mode, so that digital control is realized.
The charging judgment circuit comprises a resistor R2, a resistor R3, a resistor R4, a resistor R5, an operational amplifier U4B and an isolation diode D5, wherein one end of a charging switch module SW1 connected with a power supply battery BAT1 is sequentially connected with the resistor R4 and the resistor R5 in series and then grounded, the other end of the charging switch module SW1 is also sequentially connected with the resistor R2 and the resistor R3 in series and then grounded, the non-grounded end of the resistor R5 is connected with an ADC _ BAT pin of the singlechip, the non-grounded end of the resistor R3 is connected with an ADC _ DC pin of the singlechip, a DAC pin of the singlechip is connected with the reverse input end of the operational amplifier U4B, a Current pin of the singlechip is connected with the non-inverting input end of the operational amplifier U4B, the output end of the operational amplifier U4B is connected with the isolation diode D5, the positive power supply end of the operational amplifier U4B is connected with a 5V power supply, and the negative power supply end of the operational amplifier U4B is grounded.
The utility power charging management unit includes that the commercial power has or not detection circuitry, when the commercial power exists, after stepping down and rectifier bridge series connection steady voltage through resistance-capacitance, the inside diode of opto-coupler is luminous, and the internal switch pipe of No. three pins and No. four pins switches on after receiving the light signal, and the state of singlechip AC _ IN pin is become the low level by the high level, owing to have the existence of circuits such as rectification filtering, therefore the singlechip can directly discern to exist for the commercial power, and need not be at the time delay of judgement state.
The commercial power existence detection circuit comprises a commercial power input interface AC _ CZ1, a control switch SW, a capacitor C10, a resistor R7, a rectifier bridge BG2, a capacitor C9, a resistor R8, a voltage stabilizing tube D7, an optical coupler OP2 and a resistor R9, wherein a fire wire end of the commercial power input interface AC _ CZ1 is connected with the control switch SW, the other end of the control switch SW is connected with one alternating current input end of the rectifier bridge BG2 IN series to form the resistor R7, two ends of the resistor R7 are connected with the capacitor C10 IN parallel, the other alternating current input end of the rectifier bridge BG2 is connected with a commercial power input interface AC _ CZ1, a direct current output positive end of the rectifier bridge BG2 is connected with the capacitor C9 and the resistor R8, the other end of the resistor R8 is connected with a negative electrode of the voltage stabilizing tube D7 and a first pin of the optical coupler OP2, a direct current output negative electrode end of the rectifier bridge BG2 is connected with the other end of the capacitor C9, a positive electrode of the capacitor D7 and a zero wire pin of the second pin of the optical coupler OP2, a third pin of the OP2 is grounded, a fourth pin of the single chip microcomputer is connected with an IN 9, and the other end of the optical coupler OP 3.3 voltage of the optical coupler R9 is connected with the resistor R9.
The commercial power charging management unit further comprises a backup battery constant-current charging circuit, the backup battery constant-current charging circuit comprises a high-frequency transformer BT1, the high-frequency transformer BT1 comprises a primary winding N1, clamping circuit absorption networks RCD1 are arranged at two ends of the primary winding N1, the clamping circuit absorption networks RCD1 are used for ensuring that the withstand voltage between a drain electrode and a source electrode of a switch tube Q2 is within a bearable range during the switching work period, the breakdown and damage of the tube are prevented, one end, connected with a resistor R2, of a charging switch module SW1 in a single-resistor bidirectional sampling circuit is connected with the cathode of a rectifier diode D3, and the cathode of an isolation diode D5 in a charging judgment circuit is connected with the input end of an output voltage-stabilizing network U5.
The single chip microcomputer system control module further comprises a one-key downloading circuit, and the one-key downloading circuit is electrically connected with the single chip microcomputer.
The working principle of the invention is as follows: switch is opened through button man-machine operation module, and cooperation liquid crystal display module and voice storage report module set up backup battery kind parameter and liquid feeding kind parameter, and the singlechip realizes automatic liquid feeding and flowing back through carrying out PID closed-loop control to liquid feeding pump and flowing back pump.
When the liquid feeding car is connected with the mains supply, after the mains supply is subjected to voltage reduction and rectifier bridge series voltage stabilization through resistance-capacitance, the diode inside the optical coupler emits light, the internal switch tubes of the third pin and the fourth pin are switched on after receiving light signals, the state of the AC _ IN pin of the single chip microcomputer is changed from a high level to a low level, and the single chip microcomputer can directly identify the existence of the mains supply due to the existence of circuits such as rectification filtering and the like. After detecting that the mains supply meets the charging condition, the charging switch module SW1 in the single-resistor bidirectional sampling circuit is closed to form a charging circuit, and the single chip can automatically control the magnitude of the output current according to the type of the battery, the terminal voltage of the battery and the charging current, so that the switching of different states such as uniform charging, floating charging, trickle charging and the like is realized. In the charging process, the charging judgment circuit collects the charging voltage and current of the storage battery through the ADC unit, the DAC unit adjusts the charging output voltage and current in a closed-loop mode to the constant-current charging circuit of the backup battery, and the constant-current charging circuit of the backup battery quickly adjusts the charging current, so that the current flowing through the storage battery is kept constant, and constant-current charging is achieved.
Based on the process, the liquid adding vehicle can charge the backup battery in the working state, so that the loss of the backup battery can be reduced, and the service life of the backup battery is prolonged.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides an automatic liquid feeding system of automobile-used battery of liquid feeding, returns liquid module (1), singlechip peripheral module (2), power module (3), singlechip system control module (4), its characterized in that including the liquid feeding:
the liquid feeding and returning module (1) comprises a liquid feeding assembly and a liquid returning assembly, and the liquid feeding assembly and the liquid returning assembly are both connected with the single chip microcomputer system control module (4) and are controlled by the single chip microcomputer system control module (4) to automatically feed liquid or return liquid;
the singlechip peripheral module (2) comprises a liquid crystal display module, a key man-machine operation module, a voice storage and broadcast module and a record storage and query module, and the liquid crystal display module, the key man-machine operation module, the voice storage and broadcast module and the record storage and query module are all electrically connected with the singlechip system control module (4);
power module (3), including battery backup power supply unit and commercial power charge management unit, wherein: the battery backup power supply unit for supplying power to the operation of the liquid adding vehicle is electrically connected with the single chip microcomputer system control module (4); the commercial power charging management unit is used for providing numerical control constant current charging management for the battery backup power supply unit and is electrically connected with the battery backup power supply unit;
the singlechip system control module (4) comprises a singlechip.
2. The automatic liquid adding system of the vehicle storage battery of claim 1, characterized in that: the liquid adding assembly comprises a liquid storage tank, a filter A, a liquid adding pump and a flowmeter;
the liquid feeding pump is subjected to PID closed-loop control by a single chip microcomputer;
the flow meter is in signal connection with the single chip microcomputer through a GPIO port of the single chip microcomputer;
the liquid to be added in the liquid storage tank sequentially passes through the filter A, the liquid adding pump and the flowmeter through the connecting water pipe and enters the storage battery of the electric vehicle.
3. The automatic liquid adding system of the storage battery for the liquid adding vehicle of claim 1, which is characterized in that: the liquid return assembly comprises a liquid return valve, a filter B and a liquid return tank;
liquid in the electric vehicle storage battery sequentially passes through the liquid return valve and the filter B through the connecting water pipe and reaches the liquid return tank; the liquid return box is also provided with a liquid level sensor and an electromagnetic valve, the liquid level sensor is in signal connection with the single chip microcomputer system control module (4), and the electromagnetic valve is electrically connected with the single chip microcomputer;
a liquid discharge pump and a waste liquid collecting bottle are arranged outside the liquid return box;
the liquid discharge pump is subjected to PID closed-loop control by a single chip microcomputer;
the waste liquid in the liquid return box is pumped into a waste liquid recovery bottle through a liquid discharge pump.
4. The automatic liquid adding system of the storage battery for the liquid adding vehicle of claim 1, which is characterized in that: the battery backup power supply unit comprises a single-resistor bidirectional sampling circuit;
the single-resistor bidirectional sampling circuit comprises a charging switch module SW1, a backup power supply battery BAT1, a Current sampling resistor RS1, an operational amplifier U4A, a resistor RF1 and a resistor R6, wherein a signal end of the charging switch module SW1 is connected with a Charge pin of a single chip microcomputer, one end of the charging switch module SW1 is connected with an anode of the backup power supply battery BAT1, a cathode of the backup power supply battery BAT1 is connected with a non-inverting input end of the operational amplifier U4A, the cathode of the backup power supply battery BAT1 is further connected with the Current sampling resistor RS1, the resistor RF1 is connected between a reverse input end and an output end of the operational amplifier U4A in series, the reverse input end of the operational amplifier U4A is further connected with the resistor R6, an output end of the operational amplifier U4A is further connected with a Current pin of the single chip microcomputer, and the other end of the resistor RS1, the other end of the source end R6 and a negative end of the operational amplifier U4A are all grounded.
5. The automatic liquid adding system of the storage battery for the liquid adding vehicle of claim 4, which is characterized in that: the battery backup power supply unit also comprises a charging judgment circuit;
the charging judgment circuit comprises a resistor R2, a resistor R3, a resistor R4, a resistor R5, an operational amplifier U4B and an isolation diode D5, one end of the charging switch module SW1, which is connected with the power supply battery BAT1, is sequentially connected with the resistor R4 and the resistor R5 in series and then is grounded, the other end of the charging switch module SW1 is also sequentially connected with the resistor R2 and the resistor R3 in series and then is grounded, the non-grounding end of the resistor R5 is connected with the ADC _ BAT pin of the single chip microcomputer, the non-grounding end of the resistor R3 is connected with the ADC _ DC pin of the single chip microcomputer, the DAC pin of the single chip microcomputer is connected with the reverse input end of the operational amplifier U4B, the Current pin of the single chip microcomputer is connected with the non-inverting input end of the operational amplifier U4B, the output end of the operational amplifier U4B is connected with the isolation diode D5, the positive power supply end of the operational amplifier U4B is connected with a 5V power supply, and the negative electrode of the operational amplifier U4B is grounded.
6. The automatic liquid adding system of the vehicle storage battery of claim 1, characterized in that: the commercial power charging management unit comprises a commercial power existence detection circuit;
the commercial power existence detection circuit comprises a commercial power input interface AC _ CZ1, a control switch SW, a capacitor C10, a resistor R7, a rectifier bridge BG2, a capacitor C9, a resistor R8, a voltage stabilizing tube D7, an optocoupler OP2 and a resistor R9, wherein a fire wire end of the commercial power input interface AC _ CZ1 is connected with the control switch SW, the other end of the control switch SW is connected with one AC input end of the rectifier bridge BG2 IN series to form the resistor R7, two ends of the resistor R7 are connected with the capacitor C10 IN parallel, the other AC input end of the rectifier bridge BG2 is connected with a zero wire end of the commercial power input interface AC _ CZ1, a DC output positive electrode end of the rectifier bridge BG2 is connected with the capacitor C9 and the resistor R8, the other end of the resistor R8 is connected with a negative electrode of the voltage stabilizing tube D7 and a first pin of the optocoupler OP2, a DC output negative electrode end of the rectifier bridge BG2 is connected with the other end of the capacitor C9, a positive electrode of the capacitor D7 and a second pin of the optocoupler OP2, a third pin of the OP2 is connected with a fourth IN pin of the optocoupler 2, and a fourth pin of the AC _ OP 3 is connected with a voltage of the single chip microcomputer, and a voltage of the resistor R3.9 is connected with a third pin of the optocoupler V3.
7. The automatic liquid adding system of the storage battery for the liquid adding vehicle of claim 6, which is characterized in that: the commercial power charging management unit also comprises a backup battery constant current charging circuit;
the backup battery constant-current charging circuit comprises a high-frequency transformer BT1, the high-frequency transformer BT1 comprises a primary winding N1, clamping circuit absorption networks RCD1 are arranged at two ends of the primary winding N1, one end, connected with a resistor R2, of a charging switch module SW1 in a single-resistor bidirectional sampling circuit is connected with the negative electrode of a rectifier diode D3, and the negative electrode of an isolation diode D5 in a charging judgment circuit is connected with the input end of an output voltage-stabilizing network U5.
8. The automatic liquid adding system of the vehicle storage battery of claim 1, characterized in that: the single chip microcomputer system control module further comprises a one-key downloading circuit, and the one-key downloading circuit is electrically connected with the single chip microcomputer.
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