CN115377626B - Auxiliary liquid adding device for storage battery of subway train - Google Patents
Auxiliary liquid adding device for storage battery of subway train Download PDFInfo
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- CN115377626B CN115377626B CN202211019106.7A CN202211019106A CN115377626B CN 115377626 B CN115377626 B CN 115377626B CN 202211019106 A CN202211019106 A CN 202211019106A CN 115377626 B CN115377626 B CN 115377626B
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- 239000007788 liquid Substances 0.000 title claims abstract description 304
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000001802 infusion Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000013589 supplement Substances 0.000 abstract description 2
- 238000003032 molecular docking Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 239000000178 monomer Substances 0.000 description 10
- 230000001502 supplementing effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000011179 visual inspection Methods 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an auxiliary liquid adding device for a storage battery of a subway train, which can detect and display the liquid level of the storage battery, and can supplement liquid for the storage battery by combining liquid adding equipment when the storage battery is in a liquid shortage state, and comprises the following components: the non-contact sensor is used for detecting the liquid level of the storage battery, and the signal indicating and controlling circuit is used for displaying signals and controlling liquid adding according to the output signals of the non-contact sensor; the device can improve work efficiency and working quality, accomplish quick accurate detection battery liquid level, can also realize a key liquid feeding, automatic stop after accomplishing, efficient, fluid infusion are accurate.
Description
Technical Field
The invention relates to the field of subway train storage batteries, in particular to a liquid level detection and auxiliary liquid feeding device of a subway train storage battery.
Background
One battery pack of subway trains is typically composed of a plurality of battery cells, and each subway train also contains a plurality of battery packs. Such as AC 10-type electric trains, each of which contains 2 battery packs, each of which includes 80 nickel-cadmium battery cells, the model of each battery cell being FNC232MR, each battery cell having a structure including a connecting sheet, a positive electrode sheet, a negative electrode sheet separator, and a plug; the discharge rate of each battery cell for 5 hours was 1.2V and the capacity was 140AH, and the technical data is shown in the following table:
80 storage battery monomers are connected in series in 16 stainless steel trays, all the storage battery monomers in the same tray are connected by nickel-plated copper plates, and halogen-free copper cable connectors are adopted for connection between the trays.
The train battery has two modes of charge and discharge, the discharge being performed in the following cases: (1) emergency lighting on a train; (2) The entire communication system (cable broadcast and train radio); (3) tail lights at two ends of the train; (4) emergency ventilation; (5) starting the train; (6) maintenance in workshops. The train storage battery is subjected to floating charge or supplementary charge by a storage battery charger under an auxiliary inverter with 124V floating charge or direct current voltage. In the floating charge process, as shown in fig. 1, the voltage of the floating charge varies with the change of the external temperature.
The expected service life of the train storage battery is more than 15 years under the condition of average 22 ℃, and the service life of the storage battery is influenced by the fact that the temperature is too high; when the effective capacity of the battery falls below 70% of the rated capacity, it cannot be used any more.
When the battery is used in daily life, the battery needs to be maintained, and the steps are as follows:
s1, visual inspection: the method comprises the steps of performing visual inspection once per month according to a maintenance rule, checking whether the electrolyte height of each storage battery monomer is between the maximum scale and the minimum scale, and measuring the voltage and the temperature of each storage battery monomer if the liquid level loss of each storage battery monomer is higher than the average value of the storage battery monomers, so that the battery design is convenient for checking in the minimum time;
s2, supplementing water: before supplementing water, opening a valve plug of the hole cover, and injecting water into each storage battery monomer until the maximum indication scale is reached, and after filling, further checking all the storage battery monomers, wherein the injection of all the storage battery monomers is required to be proper; if liquid overflows during liquid adding, all liquid overflows, and the pH value of the liquid needs to be tested by using litmus paper; if the liquid is alkaline, then 1% boric acid solution, i.e., half cup boric acid plus 2 gallons of water, is used to neutralize; all liquids should be contained in plastic containers and handled by professionals without placing them in a sewage disposal system;
s3, cleaning: ensuring that the top of the battery is kept clean and dry, and local dust or wet marks can be wiped off by clean cloth;
s4, measuring the open-circuit voltage of each storage battery cell; firstly, charging a storage battery by lifting an arch, and ensuring that the vehicle falls down and is retracted under the condition of full charge (a voltmeter displays more than 100V when full charge); disconnecting all loads, standing the train for 2 hours, measuring the open-circuit voltage of each storage battery cell by using a digital voltmeter when the battery is pulled out from the train, wherein the measuring range is larger than 1.29v, the difference between the voltage of the single battery cell and the average voltage is not more than +/-20 mv, and marking the single voltage lower than 1.29v for future comparison inspection; measuring 80 batteries with total voltage greater than 101v; if the open-circuit voltage exceeds the range, performing charge and discharge operation; wherein, the insulating screw on the insulating copper plate is required to tighten the torsion according to the anti-loosening mark in the processes of disassembly and assembly and charging and discharging.
It can be seen that the storage battery of the train is an important component of the subway train, and once the train fails, the operation reliability of the train is directly affected, so that the maintenance and inspection work of the storage battery at ordinary times directly relates to the performance and service life of the storage battery.
However, in the currently used method, the following safety hazards exist during the on-site inspection and maintenance of the train storage battery: firstly, when the liquid level of the electrolyte of the storage battery is checked, whether the height of each single electrolyte of the storage battery is between the maximum scale and the minimum scale is required to be checked visually, but because the material of a battery box of the storage battery is polypropylene and has a certain thickness, the liquid level condition cannot be judged accurately in the field visual inspection, and even by means of a flashlight, the liquid level condition cannot be judged accurately; secondly, when the storage battery is replenished with liquid, when the liquid level is greater than 30mm from the highest liquid level mark line, the glass buret and the funnel are required to be used for replenishing distilled water to the position 5mm below the highest liquid level mark line, but in actual liquid charging, a single person cannot use the funnel and the buret at the same time, so that liquid charging measurement is often repeated during liquid charging, the efficiency is low, the highest liquid level measuring range is easily exceeded, liquid overflow is even caused, and a certain potential safety hazard is generated.
Disclosure of Invention
The invention aims to provide an auxiliary liquid feeding device for a storage battery of a train, which solves the problems of excessive liquid feeding and overflow caused by low visibility, poor reliability, complicated liquid feeding and low accuracy in the process of checking the liquid level of the storage battery.
In order to achieve the above purpose, the invention provides an auxiliary liquid adding device for a storage battery of a subway train, which can detect and display the liquid level of the storage battery, and can supplement liquid to the storage battery by combining liquid adding equipment when the storage battery is in a liquid shortage state, and comprises the following components: the non-contact sensor is used for detecting the liquid level of the storage battery, and the signal indicating and controlling circuit is used for displaying signals and controlling liquid adding according to the output signals of the non-contact sensor;
the signal indicating and controlling circuit comprises a time base integrated circuit, a first photoelectric isolating switch, a second photoelectric isolating switch and a plurality of indicating lamps;
the non-contact sensor transmits the detected high liquid level signal to the input end of the first photoelectric isolating switch, and transmits the detected low liquid level signal to the input end of the second photoelectric isolating switch;
the time base integrated circuit is connected with the output end of the first photoelectric isolating switch;
under the processing of the time base integrated circuit, the first photoelectric isolating switch and the second photoelectric isolating switch, a plurality of indicator lamps display different signals according to different signals input by the non-contact sensor;
the signal lamp comprises a high liquid level indicator lamp, a low liquid level indicator lamp, a liquid adding permission indicator lamp, a liquid shortage indicator lamp and a working indicator lamp.
Preferably, the time base integrated circuit has a control pin and an output pin, and the control pin of the time base integrated circuit is connected with the output end of the first photoelectric isolating switch.
Preferably, the signal transmitted to the input end of the first photoelectric isolating switch by the non-contact sensor comprises high voltage and no input, when the signal of the input end of the first photoelectric isolating switch is high voltage, the input end of the first photoelectric isolating switch is conducted, and when the signal of the input end of the first photoelectric isolating switch is no input, the input end of the first photoelectric isolating switch is not conducted;
the signal transmitted to the input end of the second photoelectric isolating switch by the non-contact sensor comprises low voltage and no input, when the signal of the input end of the second photoelectric isolating switch is low voltage, the input end of the second photoelectric isolating switch is conducted, and when the signal of the input end of the second photoelectric isolating switch is no input, the input end of the second photoelectric isolating switch is not conducted.
Preferably, the signal indicating and controlling circuit further comprises a first relay, a second relay and a triode, wherein the first relay and the second relay comprise coils and contacts;
the base electrode of the triode is connected with the output pin of the time base integrated circuit, the collector electrode is connected with the positive electrode of the power supply, and the emitter electrode is grounded;
the coil of the first relay is connected between the collector electrode of the triode and the positive electrode of the power supply, and the contact of the first relay is connected between the positive electrode and the negative electrode of the power supply;
the coil of the second relay is arranged between the first relay and the power supply, and the contact of the second relay is connected with the contact of the first relay and the coil of the second relay in parallel.
Preferably, the high liquid level indicator lamp is connected to the input end of the first photoelectric isolating switch, and the brightness of the high liquid level indicator lamp controls the conduction of the output end of the first photoelectric isolating switch;
when the high liquid level indicator lamp is on, the output end of the first photoelectric isolating switch is conducted, and when the high liquid level indicator lamp is not on, the output end of the first photoelectric isolating switch is not conducted.
Preferably, the control pin of the time base integrated circuit is also connected with a resistor in series;
when the output end of the first photoelectric isolating switch is not conducted, the output pin of the time base integrated circuit is at a high level, and the triode is conducted;
when the output end of the first photoelectric isolating switch is conducted, the output of the time base integrated circuit is in a low level, and the triode is not conducted.
Preferably, the liquid adding permission indicator lamp is connected between the collector electrode of the triode and the positive electrode of the power supply;
when the triode is conducted, the coil of the first relay is attracted to allow the liquid adding indicating lamp to be lighted, and the contact of the first relay is also conducted;
when the triode is not conducted, the coil of the first relay is powered off, the liquid adding indicating lamp is allowed to be not lightened, and the contact of the first relay is disconnected.
Preferably, the input end of the second photoelectric isolating switch is also connected with the positive electrode of the power supply, and the low liquid level indicator lamp is connected between the input end of the second photoelectric isolating switch and the positive electrode of the power supply; the anode of the liquid shortage indicator lamp is connected with the output end of the second photoelectric isolating switch, and the cathode of the liquid shortage indicator lamp is grounded;
the anode of the liquid shortage indicator lamp is also connected with the positive electrode of the power supply;
the brightness of the low liquid level indicator lamp influences the conduction of the output end of the second photoelectric isolating switch, when the low liquid level indicator lamp is on, the output end of the second photoelectric isolating switch is conducted, and the liquid shortage indicator lamp is not on; when the low liquid level indicator lamp is not on, the output end of the second photoelectric isolating switch is not conducted, and the liquid shortage indicator lamp is on.
Preferably, the signal indicating and controlling circuit further comprises a power switch and a start button, the power switch controls the power supply of the signal indicating and controlling circuit, and the start button controls the liquid adding device to add liquid to the storage battery;
the power switch and the starting button are connected in series with the contact of the first relay and the coil of the second relay;
the working indicator lamp is connected with the contact of the second relay, and when the contact of the second relay is conducted, the working indicator lamp is on, the contact of the second relay is disconnected, and the working indicator lamp is off;
the contact of the second relay is also connected with a control device of the liquid adding equipment, when the contact of the second relay is conducted, the control device of the liquid adding equipment controls the liquid adding equipment to work, and when the contact of the second relay is disconnected, the control device of the liquid adding equipment stops controlling the liquid adding equipment to work;
when the coil of the first relay is attracted, the contact of the first relay is conducted, the starting button is pressed, the coil of the second relay is attracted, accordingly, the contact of the second relay is conducted, the work indicator lamp is on, and meanwhile, the control device of the liquid adding device controls the liquid adding device to work until the coil of the first relay is powered off.
Preferably, a scram button is connected in series between the power switch and the starting button, and the scram button is in a closed state at ordinary times; when the work indicator lamp is on and the control device of the liquid adding device controls the liquid adding device to work, if the work of the liquid adding device needs to be stopped in an emergency mode, the emergency stop button is pressed down, so that the contact of the first relay is disconnected, the coil of the second relay is powered off, the contact of the second relay is disconnected, the work indicator lamp is turned off, and the control device of the liquid adding device stops controlling the liquid adding device to work.
Compared with the prior art, the auxiliary liquid adding device can be used for detecting the liquid level of the storage battery of the train, particularly when the liquid level detection light is not good, and the liquid level can not be accurately judged, the device can be used for improving the working efficiency and the working quality, and achieving rapid and accurate detection; the state of the liquid level can be intuitively and clearly known through the indicator lamp of the observation device, particularly when the storage battery is in a shortage state, the liquid shortage indicator lamp can be lightened, and the liquid is required to be added; the device can also assist in completing the liquid replenishing operation of the storage battery, thereby realizing rapidness and accuracy; the problems of inaccurate liquid supplementing, complex operation and the like in the prior art are avoided, and particularly, the damage to the performance of storage battery equipment and the safety accidents of personnel caused by overflow are avoided; the device can realize a key liquid feeding, and automatic stop after accomplishing, efficient, the fluid infusion is accurate.
Drawings
FIG. 1 is a graph showing the variation of the float charge voltage of a battery cell with ambient temperature;
FIG. 2 is a schematic diagram of a panel of the auxiliary charging device for the train storage battery of the present invention;
FIG. 3 is a diagram showing the correspondence between a non-contact sensor and a docking plug according to the present invention;
FIG. 4 is an internal schematic diagram of a non-contact sensor according to the present invention;
FIG. 5 is a wiring diagram of a solenoid valve and a docking plug of the liquid adding device of the present invention;
fig. 6 is a schematic circuit diagram of the device of the present invention.
Detailed Description
The technical solution, constructional features, achieved objects and effects of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention.
It should be noted that, the drawings are in very simplified form and all use non-precise proportions, which are only used for the purpose of conveniently and clearly assisting in describing the embodiments of the present invention, and are not intended to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any modification of structure, change of proportion or adjustment of size, without affecting the efficacy and achievement of the present invention, should still fall within the scope covered by the technical content disclosed by the present invention.
It is noted that in the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The utility model provides a supplementary liquid feeding device of subway train battery can detect the liquid level height of battery and show, can combine the liquid feeding equipment to carry out the fluid infusion for the battery when the battery lacks the liquid, and the device includes: the non-contact sensor is used for detecting the liquid level of the storage battery, and the signal indicating and controlling circuit is used for correspondingly processing the output signal of the non-contact sensor so as to display corresponding signals and control liquid adding; the non-contact sensor can detect the liquid level of the storage battery monomer and transmit corresponding voltage signals to the signal indicating and controlling circuit; the signal indicating and controlling circuit can indicate the corresponding liquid level state of the storage battery according to the voltage signal of the non-contact sensor, and the signal indicating and controlling circuit comprises: allowing a liquid adding state, a high liquid level state, a low liquid level state and a liquid shortage state; under the state of allowing liquid adding, the signal indicating and controlling circuit can control the external liquid adding equipment to add liquid to the storage battery, and the state is working at the moment.
As shown in fig. 2, the auxiliary liquid adding device for the storage battery of the embodiment is provided with a shell for accommodating the signal indicating and controlling circuit, a power switch, a start button, an emergency stop button and a plurality of indicator lamps are arranged on a panel of the shell and are all connected with the signal indicating and controlling circuit, wherein the start button is a button for controlling liquid adding of the liquid adding device, the emergency stop button is a button for emergently stopping liquid adding of the liquid adding device, and the plurality of indicator lamps are respectively a power indicator lamp, a liquid adding permission indicator lamp, a high liquid level indicator lamp, a low liquid level indicator lamp, a liquid shortage indicator lamp and a working indicator lamp; the device panel is also provided with two plugs which are respectively connected with the signal indicating and control circuit, namely a GX16-4 core aviation docking plug male head and a GX16-2 core aviation docking plug male head, and the two plugs are respectively connected with the non-contact sensor and the liquid adding equipment, so that the signal indicating and control circuit is connected with the non-contact sensor and the liquid adding equipment.
The liquid adding equipment comprises an electromagnetic valve, a liquid adding funnel and a liquid adding opening, in this embodiment, a DC12V pressureless electromagnetic valve is adopted, as shown in fig. 5, one end of the electromagnetic valve is a GX16-2 core aviation docking plug female head, and can be connected with a GX16-2 core aviation docking plug male head of the device panel, the other end of the electromagnetic valve is connected with the liquid adding opening of the liquid adding funnel, and when the electromagnetic valve is electrified, the liquid adding opening is controlled to be opened so that electrolyte can be added into the storage battery through the liquid adding opening provided with the liquid adding funnel.
As shown in fig. 3, the non-contact sensor is connected with a corresponding GX16-4 core aviation docking plug male head on the device panel through a GX16-4 core aviation docking plug female head, the non-contact sensor is a 4-core non-contact sensor, the inside of the non-contact sensor is composed of two non-contact liquid level sensors, and in the embodiment, a sensor with the model of XKC-Y25-V and a sensor with the model of XKC-Y25-NPN are respectively adopted, as shown in fig. 4; wherein XKC-Y25-V is used to detect the high liquid level signal and XKC-Y25-NPN is used to detect the low liquid level signal.
The non-contact sensor further comprises a high liquid level signal wire, a low liquid level signal wire, a grounding signal wire and a power supply signal wire, wherein the signal wires are connected with the GX16-4 core aviation docking plug female head, so that corresponding signals are output to the signal indicating and controlling circuit; when the XKC-Y25-V of the non-contact sensor detects a high liquid level (namely, liquid is detected at a high liquid level line), 12V of voltage is output through the high liquid level signal line, and when the XKC-Y25-V does not detect the high liquid level, no voltage is output through the high liquid level signal line; when the XKC-Y25-NPN of the non-contact sensor detects a low liquid level (namely, liquid is detected at the low liquid level line), the voltage 0V is output through the low liquid level signal line, and when the XKC-Y25-NPN does not detect the low liquid level, the low liquid level signal line does not output.
The induction distance between the non-contact sensor XKC-Y25-V and the non-contact sensor XKC-Y25-NPN is set according to the distance between the high liquid level line and the low liquid level line of the storage battery, in the embodiment, the distance between the high liquid level line and the low liquid level line of the storage battery is 25mm, so that the induction distance between the two non-contact liquid level sensors XKC-Y25-V and XKC-Y25-NPN is set to 25mm, and the high liquid level line and the low liquid level line (namely the induction centers of the XKC-Y25-V and the XKC-Y25-NPN) are marked on the shell of the non-contact sensor; when in use, the non-contact sensor is tightly attached to the single shell of the storage battery, and the high-low liquid level line of the non-contact sensor and the high-low liquid level line of the storage battery are respectively aligned.
As shown in fig. 6, the signal indicating and controlling circuit adopts a built-in 12V dc power supply, and controls the switch of the power supply through a power switch K1, and adopts an 8-pin time-base integrated circuit and peripheral elements as a core control circuit, and the signal and control circuit of the present embodiment includes: the intelligent power supply comprises an NE555 chip, a first photoelectric isolating switch, a second photoelectric isolating switch and 6 indicator lamps, wherein a coil of a first relay KA1 and an NPN triode Q1 are further arranged between the first photoelectric isolating switch and the NE555 chip; the NE555 chip is characterized in that a pin 1 is grounded, a pin 3 is output, a pin 4 is connected with a power supply anode, a pin 5 is grounded, a pin 7 is not externally connected, a pin 8 is connected with a power supply anode, and a pin 2 and a pin 6 are connected to form a control end; two EL718 chips are adopted as two photoelectric isolating switches, wherein a first EL718 chip X1 is a first photoelectric isolating switch and is connected with a high liquid level signal line of the non-contact sensor to receive high liquid level signal output (namely input of 12V voltage or no input) of the non-contact sensor, a second EL718 chip X2 is a second photoelectric isolating switch and is connected with a low liquid level signal line of the non-contact sensor to receive low liquid level signal output (namely input of 0V voltage or no input) of the non-contact sensor, and the output end of the first photoelectric isolating switch is connected with the control end of the NE555 chip; the signal indicating and controlling circuit comprises 6 indicating lamps which are respectively a power supply indicating lamp D1, a liquid adding permission indicating lamp D2, a high liquid level indicating lamp D3, a low liquid level indicating lamp D4, a liquid shortage indicating lamp D5 and a working indicating lamp D6, wherein the 6 indicating lamps are in one-to-one correspondence with the 6 indicating lamps on the panel of the device.
The first relay KA1 comprises a coil and a contact, and when current passes through the coil to attract the coil, the contact is conducted.
The base electrode of the NPN triode Q1 is connected with the No. 3 pin of the NE555 chip, the collector electrode is connected with the positive electrode of the power supply, and the emitter electrode is connected with the negative electrode of the power supply; the collector electrode of the NPN triode Q1 is also connected with the liquid adding permission indicator lamp D2; when the voltage of the NE555 chip is lower than 1/3 of the power supply voltage, the No. 3 pin of the NE555 chip outputs high level, the NPN triode Q1 is conducted, the liquid adding permission indication lamp D2 is on, at the moment, the coil of the first relay KA1 is also attracted, and the contact of the first relay KA1 is conducted; when the voltage of the NE555 chip is higher than 2/3 of the power supply voltage, the No. 3 pin output of the NE555 chip is in a low level, the NPN triode Q1 is not conducted, the coil of the first relay KA1 is powered off, the contact is opened, and the liquid adding permission indicating lamp D2 is not lightened.
The voltage of the NE555 chip is influenced by the first EL718 chip X1, and as the control end of the NE555 chip is also connected with a large resistor R2 of 1MΩ in series, when the first EL718 chip X1 is not conducted, the voltage of the control end of the NE555 chip is reduced to be lower than 1/3 of the power supply voltage; when the first EL718 chip X1 is turned on, the control terminal voltage of the NE555 chip is higher than 2/3 of the power supply voltage.
Specifically, as shown in fig. 6, pin 1 of the first EL718 chip X1 is an input pin, and is connected to the output of the high-level signal line of the non-contact sensor, pin 2 is grounded, pin 3 is connected to the control end of the NE555 chip, and pin 4 is connected to the positive electrode of the power supply; when the pin 1 has high potential input (namely, when a high liquid level signal of the non-contact sensor has 12V voltage output), the pins 1 and 2 are conducted; when no signal is input to the pin 1 (i.e. no voltage is output to the high liquid level signal of the non-contact sensor), the pins 1 and 2 are not conducted. In order to achieve the function of the photoelectric isolating switch, the high-level indicator lamp D3 is disposed at the input pin, i.e. pin 1, of the first EL718 chip X1, and the on of pins 3 and 4 of the first EL718 chip X1 is affected by the on and off of the high-level indicator lamp D3: when the pins 1 and 2 are conducted, the high liquid level indicator lamp D3 is on, and the pins 3 and 4 are conducted, namely the first EL718 chip X1 is conducted; when pins 1 and 2 are not conducted, the high liquid level indicator lamp D3 is not lightened, and pins 3 and 4 are also not conducted, namely the first EL718 chip X1 is not conducted.
The pin 1 of the second EL718 chip X2 is connected with the positive electrode of the power supply, the pin 2 is an input pin, the output of a low liquid level signal line of the non-contact sensor is connected, the pin 3 and the pin 4 are grounded, and the low liquid level indicator lamp D4 is arranged at the pin 1; when the foot No. 2 has low potential input (namely, when a low liquid level signal of the non-contact sensor has 0V voltage output), the foot No. 1 and the foot No. 2 are conducted, and a low liquid level indicator lamp D4 is lighted; when no signal is input to the foot No. 2 (i.e. no voltage output of the low liquid level signal of the non-contact sensor), the foot No. 2 is suspended, so the foot No. 1 and the foot No. 2 are not conducted, and the low liquid level indicator lamp D4 is not lighted. The lighting and non-lighting of the low liquid level indicator lamp D4 influence the conduction of the No. 3 pin and the No. 4 pin of the second EL718 chip X2, the anode of the liquid shortage indicator lamp D5 is connected with the No. 3 pin, and the cathode of the liquid shortage indicator lamp D5 is grounded and is also connected with the positive electrode of a power supply; when the low liquid level indicator lamp D4 is on, the foot No. 3 and the foot No. 4 are conducted, and the anode potential of the liquid shortage indicator lamp D5 is pulled down, so that the liquid shortage indicator lamp D5 is not on; when the low liquid level indicator lamp D4 is not on, the foot No. 3 and the foot No. 4 are not conducted, so that the liquid shortage indicator lamp D5 is conducted, and the liquid shortage indicator lamp D5 is lighted.
Further, the power indicator lamp D1 is disposed between the positive electrode and the negative electrode of the dc power supply. The signal indicating and controlling circuit further comprises a second relay KA2 and a starting button SB1, wherein the second relay KA2 and the starting button SB1 are arranged between the first relay KA1 contact and the power supply negative electrode, the working indicator lamp D6 is also arranged between the first relay KA1 contact and the power supply negative electrode, meanwhile, the electromagnetic valve Y0 of the liquid adding equipment which is connected with the circuit through the GX16-2 core aviation docking plug is connected in parallel with the working indicator lamp D6, and the starting button SB1 corresponds to the starting button on the panel of the device; the second relay KA2 also comprises a coil and a contact, the coil is attracted to enable the contact to be conducted, the coil is connected with the contact of the first relay KA1 in series, and the contact of the second relay KA2 controls the power-on of the working indicator lamp D6 and the electromagnetic valve Y0; after the coil of the first relay KA1 is attracted (namely, the liquid adding indicating lamp D2 is allowed to be on at the moment), the contact is conducted, the starting button SB1 is pressed down, so that the coil of the second relay KA2 is electrified, the contact is attracted, the working indicating lamp D6 is lighted, the electromagnetic valve Y0 starts working, and liquid adding is started; when the coil of the first relay KA1 is powered off (i.e. the liquid adding indicator lamp D2 is allowed to be not on at the moment), the contact of the first relay KA1 is disconnected, so that the coil of the second relay KA2 is powered off, the contact of the second relay KA2 is disconnected, the working indicator lamp D6 is extinguished, and the electromagnetic valve Y0 stops working.
Based on the circuits and the devices, according to the output signals of different non-contact sensors, different circuits are conducted, so that different indicator lamps are lightened; the signal indicating and controlling circuit comprises 6 circuit loops corresponding to each indicator lamp, and specifically comprises:
the power indicator lamp loop comprises a 12V direct current power supply, a power switch, a power indicator lamp D1 and a resistor R1 with the size of 2KΩ; under normal conditions, the power indicator lamp loop is closed, when the device is used, the power switch K1 is closed, and the power indicator lamp D1 is always on;
the liquid filling permission indicating lamp loop comprises a 12V direct-current power supply, a liquid filling permission indicating lamp D2, an NE555 chip, an NPN triode Q1, a first EL718 chip X1 and a first relay KA1; when the liquid level of the storage battery is lower than the highest liquid level, a high liquid level signal line of the non-contact sensor is not output, so that a first EL718 chip X1 is not input, a pin 1 and a pin 2 of the non-contact sensor are not conducted, a high liquid level indicator D3 is not lightened, a pin 3 and a pin 4 of the non-contact sensor are not conducted, the resistor is pulled down, the voltage of the NE555 chip is lower than 1/3 of the power supply voltage, the pin 3 of the NE555 chip outputs high level, an NPN triode Q1 is conducted, a first relay KA1 coil is attracted, a liquid adding indicator D2 is allowed to be lightened, and liquid supplementing operation can be carried out in the state;
the high liquid level indicator lamp loop comprises a 12V direct current power supply, a high liquid level indicator lamp D3, a first EL718 chip X1, an NE555 chip, an NPN triode Q1 and a first relay KA1; when the liquid level of the storage battery reaches the highest liquid level, the non-contact sensor outputs a high liquid level signal, the high potential (12V) is input into the No. 1 pin of the first EL718 chip X1, so that the No. 1 pin and the No. 2 pin are conducted, and the high liquid level indicator lamp D3 is lighted; the pin 3 and the pin 4 of the first EL718 chip X1 are caused to be conducted, a high level is added to the control end of the NE555 chip, so that the voltage of the control end of the NE555 chip is higher than 2/3 of the power supply voltage, at the moment, the pin 3 of the NE555 chip outputs a low level, the NPN triode Q1 is not conducted, a first relay KA1 coil is powered off, a liquid adding indicating lamp D2 is allowed to be extinguished, and the highest liquid level is indicated;
the low liquid level indicator lamp loop comprises a 12V direct current power supply, a low liquid level indicator lamp D4 and a second EL718 chip X2; when the liquid level of the storage battery is at a low liquid level, the non-contact sensor outputs a low liquid level signal (0V) to the No. 2 pin of the second EL718 chip X2, which is equivalent to the grounding of the No. 2 pin of the second EL718 chip X2, and at the moment, the No. 1 pin and the No. 2 pin of the second EL718 chip X2 are conducted, and a low liquid level indicator lamp D4 is lighted; meanwhile, the pin 3 and the pin 4 are also conducted, the anode potential of the liquid shortage indicator lamp D5 is pulled down, and the liquid shortage indicator lamp D5 is not lightened;
the liquid shortage indicator lamp loop comprises a 12V direct-current power supply, a low liquid level indicator lamp D4, a liquid shortage indicator lamp D5 and a second EL718 chip; when the liquid level of the storage battery is lower than the low liquid level, and a non-contact sensor outputs a low liquid level signal and does not output the low liquid level signal, the No. 2 pin of the second EL718 chip X2 is suspended, so that the No. 1 pin and the No. 2 pin of the second EL718 chip X2 are not conducted, and the low liquid level indicator lamp D4 is not lightened; meanwhile, the foot 3 and the foot 4 are not conducted, and the liquid shortage indicator lamp D5 is lightened to indicate a liquid shortage state;
the working indicator lamp loop comprises a 12V direct-current power supply, a first relay KA1, a second relay KA2, a working indicator lamp D6 and a starting button SB1; when no high liquid level signal is input (including a low liquid level state and a liquid shortage state), the liquid adding indicator lamp D2 is allowed to be lightened, the coil of the first relay KA1 is attracted, the starting button SB1 is pressed, the electromagnetic valve Y0 is electrified, the liquid adding equipment works, and the working indicator lamp D6 is lightened; after the liquid level rises, when a high liquid level signal is input, the liquid adding indicating lamp D2 is allowed to be extinguished, the high liquid level indicating lamp D3 is lighted, the coil of the first relay KA1 is deenergized, the working indicating lamp D6 is extinguished, the electromagnetic valve Y0 is deenergized, and the liquid adding equipment stops working.
Further, the work indicator light loop further comprises a scram button SB2, the scram button SB2 corresponds to an emergency stop button on the panel of the device, the scram button SB2 is arranged on a trunk road of the work indicator light loop and is in a closed state at ordinary times, when the work indicator light D6 is on and the liquid adding equipment works, if special conditions are met, liquid adding is required to be stopped immediately, the scram button SB2 is pressed down, the work indicator light loop is turned off, the work indicator light D6 is extinguished, and the liquid adding equipment stops working.
In the invention, all the indicator lamps are LED lamps and light emitting diodes, and other indicator devices can be adopted according to the requirements.
It should be noted that, in this embodiment, the NE555 chip is used as a core circuit, and other 8-pin time-base integrated circuits may be also used.
When the device is used for detecting the storage battery of the subway train and assisting in liquid adding, the process is as follows:
s1, connecting a non-contact sensor with a plug of a device panel, and connecting the non-contact sensor with a corresponding GX16-4 core aviation docking plug male head on the device panel through a GX16-4 core aviation docking plug female head;
s2, connecting plugs of the liquid adding equipment and the device panel, and connecting electromagnetic valves of the liquid adding equipment with corresponding GX16-2 core aviation butt-joint plug male heads on the device panel through GX16-2 core aviation butt-joint plug female heads;
s3, switching on a power switch of the device, tightly attaching the non-contact sensor to the single shell of the storage battery, and respectively aligning a high liquid level line and a low liquid level line of the non-contact sensor with the high liquid level line and the low liquid level line of the storage battery;
s4, observing an indicator light of the device panel, and judging the next operation:
s41, when the liquid adding indicator lamp is allowed to light, the liquid adding operation can be performed, and the operation is performed according to the display of the low liquid level indicator lamp and the liquid shortage indicator lamp:
if the low liquid level indicator lamp is on, the liquid level of the storage battery meets the minimum liquid level requirement, and liquid adding operation can be performed, and liquid adding is not needed;
if the liquid shortage indicator lamp is on, the liquid level of the storage battery is in a liquid shortage state, and liquid adding operation is needed;
s42, when the high liquid level indicator lamp is on, the liquid level of the storage battery is at the highest position, and the liquid adding operation cannot be performed;
s5, when the liquid shortage indicator lamp is on, or the low liquid level indicator lamp is on and liquid adding is determined, the liquid adding steps are as follows:
s51, opening a valve plug of a single hole cover of the storage battery, inserting a liquid supplementing funnel from a liquid adding opening, and pouring electrolyte into the liquid supplementing funnel;
s52, pressing a start button, electrifying an electromagnetic valve, and controlling a liquid adding port to be opened so as to add liquid to the storage battery;
s53, when the liquid adding is finished, the electromagnetic valve is powered off, the liquid adding is automatically stopped, and at the moment, the high-level indicator lamp is lighted;
s54, removing the charging funnel, and closing the valve plug of the battery cell hole cover.
S6, turning off the power switch.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (9)
1. The utility model provides a supplementary liquid feeding device of subway train battery, its characterized in that can detect the liquid level height of battery and show, and can combine the liquid feeding equipment to carry out the fluid infusion for the battery when the battery lacks the liquid, includes: the non-contact sensor is used for detecting the liquid level of the storage battery, and the signal indicating and controlling circuit is used for displaying signals and controlling liquid adding according to the output signals of the non-contact sensor;
the signal indicating and controlling circuit comprises a time base integrated circuit, a first photoelectric isolating switch, a second photoelectric isolating switch and a plurality of indicating lamps;
the non-contact sensor transmits the detected high liquid level signal to the input end of the first photoelectric isolating switch, and transmits the detected low liquid level signal to the input end of the second photoelectric isolating switch;
the time base integrated circuit is connected with the output end of the first photoelectric isolating switch;
under the processing of the time base integrated circuit, the first photoelectric isolating switch and the second photoelectric isolating switch, a plurality of indicator lamps display different signals according to different signals input by the non-contact sensor;
the indicator lamp comprises a high liquid level indicator lamp, a low liquid level indicator lamp, an indicator lamp for allowing liquid to be added, an indicator lamp for lack of liquid and a working indicator lamp;
the input end of the second photoelectric isolating switch is also connected with the positive electrode of the power supply, and the low liquid level indicator lamp is connected between the input end of the second photoelectric isolating switch and the positive electrode of the power supply; the anode of the liquid shortage indicator lamp is connected with the output end of the second photoelectric isolating switch, and the cathode of the liquid shortage indicator lamp is grounded;
the anode of the liquid shortage indicator lamp is also connected with the positive electrode of the power supply;
the brightness of the low liquid level indicator lamp influences the conduction of the output end of the second photoelectric isolating switch, when the low liquid level indicator lamp is on, the output end of the second photoelectric isolating switch is conducted, and the liquid shortage indicator lamp is not on; when the low liquid level indicator lamp is not on, the output end of the second photoelectric isolating switch is not conducted, and the liquid shortage indicator lamp is on.
2. The auxiliary charging device for the storage battery of the subway train according to claim 1, wherein the time base integrated circuit is provided with a control pin and an output pin, and the control pin of the time base integrated circuit is connected with the output end of the first photoelectric isolating switch.
3. The auxiliary charging device for the storage battery of the subway train according to claim 1, wherein the signal transmitted to the input end of the first photoelectric isolating switch by the non-contact sensor comprises high voltage and no input, when the signal of the input end of the first photoelectric isolating switch is high voltage, the input end of the first photoelectric isolating switch is conducted, and when the signal of the input end of the first photoelectric isolating switch is no input, the input end of the first photoelectric isolating switch is not conducted;
the signal transmitted to the input end of the second photoelectric isolating switch by the non-contact sensor comprises low voltage and no input, when the signal of the input end of the second photoelectric isolating switch is low voltage, the input end of the second photoelectric isolating switch is conducted, and when the signal of the input end of the second photoelectric isolating switch is no input, the input end of the second photoelectric isolating switch is not conducted.
4. The auxiliary charging device for the storage battery of the subway train according to claim 3, wherein the signal indicating and controlling circuit further comprises a first relay, a second relay and a triode, wherein the first relay and the second relay comprise a coil and a contact;
the base electrode of the triode is connected with the output pin of the time base integrated circuit, the collector electrode is connected with the positive electrode of the power supply, and the emitter electrode is grounded;
the coil of the first relay is connected between the collector electrode of the triode and the positive electrode of the power supply, and the contact of the first relay is connected between the positive electrode and the negative electrode of the power supply;
the coil of the second relay is arranged between the first relay and the power supply, and the contact of the second relay is connected with the contact of the first relay and the coil of the second relay in parallel.
5. The auxiliary charging device for the storage battery of the subway train according to claim 4, wherein the high liquid level indicator lamp is connected to the input end of the first photoelectric isolating switch, and the brightness of the high liquid level indicator lamp controls the conduction of the output end of the first photoelectric isolating switch;
when the high liquid level indicator lamp is on, the output end of the first photoelectric isolating switch is conducted, and when the high liquid level indicator lamp is not on, the output end of the first photoelectric isolating switch is not conducted.
6. The auxiliary charging device for the storage battery of the subway train according to claim 5, wherein the control pin of the time base integrated circuit is also connected with a resistor in series;
when the output end of the first photoelectric isolating switch is not conducted, the output pin of the time base integrated circuit is at a high level, and the triode is conducted;
when the output end of the first photoelectric isolating switch is conducted, the output of the time base integrated circuit is in a low level, and the triode is not conducted.
7. The auxiliary charging device for the storage battery of the subway train according to claim 6, wherein the indicator lamp for allowing charging is connected between a collector electrode of the triode and a positive electrode of a power supply;
when the triode is conducted, the coil of the first relay is attracted to allow the liquid adding indicating lamp to be lighted, and the contact of the first relay is also conducted;
when the triode is not conducted, the coil of the first relay is powered off, the liquid adding indicating lamp is allowed to be not lightened, and the contact of the first relay is disconnected.
8. The auxiliary charging device for the storage battery of the subway train according to claim 7, wherein the signal indicating and controlling circuit further comprises a power switch and a start button, the power switch controlling signal indicates the power supply of the controlling circuit, and the start button controls the charging device to charge the storage battery;
the power switch and the starting button are connected in series with the contact of the first relay and the coil of the second relay;
the working indicator lamp is connected with the contact of the second relay, and when the contact of the second relay is conducted, the working indicator lamp is on, the contact of the second relay is disconnected, and the working indicator lamp is off;
the contact of the second relay is also connected with a control device of the liquid adding equipment, when the contact of the second relay is conducted, the control device of the liquid adding equipment controls the liquid adding equipment to work, and when the contact of the second relay is disconnected, the control device of the liquid adding equipment stops controlling the liquid adding equipment to work;
when the coil of the first relay is attracted, the contact of the first relay is conducted, the starting button is pressed, the coil of the second relay is attracted, accordingly, the contact of the second relay is conducted, the work indicator lamp is on, and meanwhile, the control device of the liquid adding device controls the liquid adding device to work until the coil of the first relay is powered off.
9. The auxiliary charging device for the storage battery of the subway train according to claim 8, wherein an emergency stop button is connected in series between the power switch and the starting button, and is in a closed state at ordinary times; when the work indicator lamp is on and the control device of the liquid adding device controls the liquid adding device to work, if the work of the liquid adding device needs to be stopped in an emergency mode, the emergency stop button is pressed down, so that the contact of the first relay is disconnected, the coil of the second relay is powered off, the contact of the second relay is disconnected, the work indicator lamp is turned off, and the control device of the liquid adding device stops controlling the liquid adding device to work.
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