CN111463861A - Method and device for controlling charger switch, computer equipment and storage medium - Google Patents
Method and device for controlling charger switch, computer equipment and storage medium Download PDFInfo
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a method and a device for controlling a charger switch, computer equipment and a storage medium, wherein the method for controlling the charger switch comprises the following steps: acquiring a preset charging voltage curve of a storage battery and a preset charging current curve of the storage battery; acquiring a charging voltage value and a charging current value of the storage battery in real time; drawing an actual charging voltage curve of the storage battery according to the charging voltage value, and drawing an actual charging current curve of the storage battery according to the charging current value; comparing the actual charging voltage curve of the storage battery with a preset storage battery charging voltage curve, and comparing the actual charging current curve with a preset storage battery charging current curve; judging whether the battery is fully charged according to the comparison result; if yes, the output end of the charger is closed, and the charger is forbidden to charge the storage battery. The problem of current charger lead to battery overcharge easily is solved.
Description
Technical Field
The present invention relates to the field of power switch technologies, and in particular, to a method and an apparatus for controlling a charger switch, a computer device, and a storage medium.
Background
The storage battery has the advantages of low price, easily obtained raw materials, good reliability in use, suitability for large-current discharge, wide environmental temperature range and the like. The lead-acid storage battery plays an important role no matter in the fields of transportation, communication, military, navigation, aviation, photovoltaic power generation and the like. In particular, the successful development of sealed lead-acid batteries has led to a wider range of applications.
Because people lack understanding of specifications of the storage battery, the storage battery is easy to be overcharged when the storage battery is charged at present, overcharge is that charging current of the storage battery is larger than acceptable current of the storage battery, the excess part is overcharge amount, overcharge mainly generates side reaction of electrolyzed water, and heat can be generated because oxygen generated by a positive electrode of the storage battery is transferred to a negative electrode to generate oxygen recombination reaction, so that the overcharge amount is actually converted into heat to enable temperature of the storage battery to rise, if not controlled, a large amount of water loss can be caused, serious people can cause faults such as 'thermal runaway' capacity sharp reduction, even deformation and the like, and the storage battery is greatly damaged.
When the existing charger is fully charged, the charger cannot be shut down in time, so that the problem of overcharge of the storage battery caused by the fact that the charger is continuously charged under the condition that the storage battery is fully charged is caused.
Disclosure of Invention
The invention mainly aims to provide a method and a device for controlling a charger switch, computer equipment and a storage medium, and aims to solve the problem that the existing charger cannot be shut down in time when being fully charged, so that the charger can continue to be charged under the condition that a battery is fully charged, and the storage battery is overcharged.
The invention provides a method for controlling a charger switch, which comprises the following steps: acquiring a preset charging voltage curve of a storage battery and a preset charging current curve of the storage battery; acquiring a charging voltage value and a charging current value of the storage battery in real time; drawing an actual charging voltage curve of the storage battery according to the charging voltage value, and drawing an actual charging current curve of the storage battery according to the charging current value; comparing the actual charging voltage curve of the storage battery with a preset storage battery charging voltage curve, and comparing the actual charging current curve with a preset storage battery charging current curve; judging whether the battery is fully charged according to the comparison result; if yes, the output end of the charger is closed, and the charger is forbidden to charge the storage battery.
Further, the step of judging whether the battery is fully charged according to the comparison result includes: respectively comparing the similarity of the actual charging voltage curve with a preset storage battery charging voltage curve and the similarity of the actual charging current curve with a preset storage battery charging current curve; judging whether the similarity is in a preset range interval or not; if yes, the battery is judged to be fully charged.
Further, still include: if not, adjusting the voltage output by the charger to the storage battery according to the preset charging voltage curve of the storage battery, and adjusting the current output by the charger to the storage battery according to the preset charging current curve of the storage battery.
Further, still include: acquiring an actually measured input AC voltage value of the charger in real time; judging whether the actually measured input AC voltage value is within a preset charging condition range; if not, the output end of the charger is controlled to be closed, and an alarm is given.
Further, still include: acquiring an actually measured temperature value of the charger in real time; judging whether the actually measured temperature value of the charger is within a preset charging condition range or not; if not, the output end of the charger is controlled to be closed, and an alarm is given.
Further, still include: acquiring a temperature value of the storage battery in real time; judging whether the temperature value of the storage battery is within a preset charging condition range or not; if not, the output end of the charger is controlled to be closed, and an alarm is given.
Further, still include: acquiring an actually measured input AC voltage value of the charger, an actually measured temperature value of the charger and a temperature value of the storage battery in real time; judging whether the actually-measured input AC voltage value, the actually-measured temperature value of the charger and the temperature value of the storage battery are all within a preset charging condition range, if so, controlling the charger to output a charging signal; and after receiving the charging signal, controlling the charger to charge the storage battery.
An apparatus for controlling a charger switch, comprising:
the first acquisition module is used for acquiring a preset charging voltage curve of the storage battery and a preset charging current curve of the storage battery;
the second acquisition module is used for acquiring a charging voltage value and a charging current value fed back by the storage battery in real time;
the drawing module is used for drawing an actual charging voltage curve of the storage battery according to the charging voltage value and drawing an actual charging current curve of the storage battery according to the charging current value;
the comparison module is used for comparing the actual charging voltage curve of the storage battery with a preset storage battery charging voltage curve and comparing the actual charging current curve with a preset storage battery charging current curve;
and the first control module is used for closing the output end of the charger and forbidding the charger to charge the storage battery if the first control module is yes.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method described above when executing the program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method as set forth above.
The invention has the following beneficial effects: the charger comprises a charger, a storage battery, software and a control circuit, wherein the charger is used for feeding back the storage battery, the charger is used for outputting a voltage value and a current value which are actually measured, the software is used for acquiring the actually measured output voltage value and the actually measured output current value of the charger, then the current charging state of the storage battery is judged according to the voltage value and the actually measured current value of the storage battery and the charging curve of the storage battery, if the current charging state of the storage battery is full of the storage battery, the output end of the charger is timely closed, the overcharge of the storage battery is avoided, the problem that the existing charger cannot be timely shut down.
Drawings
FIG. 1 is a schematic flow chart illustrating an embodiment of a method for controlling a charger switch according to the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of an apparatus for controlling a charger switch according to the present invention;
fig. 3 is a schematic structural diagram of a computer device provided by the present invention.
In the figure: 1. a first acquisition module; 2. a second acquisition module; 3. a drawing module; 4. a comparison module; 5. a first control module.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A method of controlling a charger switch, as shown in fig. 1: comprises the following steps of (a) carrying out,
s1, acquiring a preset charging voltage curve of the storage battery and a preset charging current curve of the storage battery;
s2, acquiring a storage battery charging voltage value and a charging current value in real time;
s3, drawing an actual charging voltage curve of the storage battery according to the charging voltage value, and drawing an actual charging current curve of the storage battery according to the charging current value;
s4, judging whether the battery is fully charged according to the comparison result;
and S5, if yes, the output end of the charger is closed, and the charger is prohibited from charging the storage battery.
In the step S1, each specification of storage battery corresponds to a corresponding charging voltage curve and charging current curve, and the corresponding charging voltage curve and charging current curve of the storage battery can be measured according to experimental data and stored in the system, or corresponding charging curves can be downloaded on the internet according to the specification and model of the battery.
The step S2 includes: an ADC module (Analog-Digital Converter) of an IC controller is used for acquiring an AD value of a charging voltage value and an AD value of a charging current value of a charger; acquiring an output calibration voltage value and a corresponding AD value thereof, and acquiring an output calibration current value and a corresponding AD value thereof; obtaining the relation between the output calibration voltage value and the corresponding AD value thereof, the relation between the output calibration current value and the corresponding AD value thereof, and converting the charging voltage value according to a preset formula according to the relation between the output calibration voltage value and the corresponding AD value thereof and the AD value of the charging voltage value; the preset formula is as follows: the charging voltage value is output as a calibration voltage value and corresponds to the AD value/the AD value of the charging voltage value; the conversion method of the measured output current is similar, and is not described in detail herein.
Further, a feedback signal output by the storage battery to the charger is obtained, and the AD value of the charging voltage value and the AD value of the charging current value are obtained according to the feedback signal; the charging voltage value and the charging current value received by the storage battery are obtained, the storage battery outputs received voltage and current signals to the charger in real time, the current voltage and current values of the storage battery are reflected more accurately, and whether the battery is fully charged or not can be judged more accurately.
In the above step S3, the actual charging voltage curve of the battery and the actual charging current curve of the battery are plotted with time as the abscissa and the voltage and current values as the ordinate.
In the step S4, the step of comparing the actual charging voltage curve of the battery with the preset charging voltage curve includes: for example, after T1, the voltage of the battery reaches a maximum value, and constant voltage current reduction is performed after the corresponding voltage point, that is, whether the first constant voltage point on the actual charging voltage curve is consistent with the preset constant voltage point of the charging voltage of the battery; after T2 time, whether the actual charging voltage curve is the same as the preset charging voltage curve enters a constant-current voltage reduction stage; the storage battery is fully charged until the actual charging voltage curve is consistent with the preset storage battery charging voltage curve and is stabilized at a certain voltage value; the comparison method according to the actual charging current curve and the preset charging current curve of the storage battery is consistent with the comparison method according to the actual charging voltage curve and the preset charging voltage curve of the storage battery, and details are not repeated here.
In step S4, the step of comparing the actual charging voltage curve of the battery with the preset charging voltage curve may further include: the constant voltage time on the actual charging voltage curve is consistent with the constant voltage time of the preset charging voltage curve, at the moment, even if the current voltage value is inconsistent, the next stage is carried out, namely the time inflection point on the actual charging voltage curve is consistent with the time inflection point on the preset charging voltage curve, and finally the voltage stabilization stage is also carried out at the same time, namely the battery is judged to be fully charged.
In step S5, a shutdown signal is sent, and when the shutdown signal of the charger is received, the shutdown of the output terminal of the charger is controlled to prohibit the charger from charging the battery.
In this embodiment, obtain the actual measurement output voltage value of the charger actual measurement and the actual measurement output current value that the feedback of battery was returned through the software, again according to this charging voltage value and charging current value and the charging curve of battery, judge this battery current charge state, if full of, then in time close the output of charger, avoid the battery overcharge, solved current charger and in the shutdown that can't be timely when being full of the electricity, caused the charger still to continue to charge under the battery full charge's the condition, lead to the problem of battery overcharge.
In an embodiment, the step of determining whether the battery is fully charged according to the comparison result includes: respectively comparing the similarity of the actual charging voltage curve with a preset storage battery charging voltage curve and the similarity of the actual charging current curve with a preset storage battery charging current curve; judging whether the similarity is in a preset range interval or not; if yes, the battery is judged to be fully charged.
In this embodiment, the similarity includes, but is not limited to: whether the inflection points of the actual charging voltage curve and a preset storage battery charging voltage curve are consistent or not, and whether the voltages are within a preset range (the error is +/-2V) or the highest points are consistent or not are judged, if the inflection points are consistent, the similarity is judged to be within the preset range, namely the same stage is judged; and after all the stages are finished, judging that the filling is completed; in addition, the inflection points are not consistent, but the highest points are consistent and finally tend to be gentle, and when the trends are consistent, the similarity is judged to be in a preset range; it is judged to be full.
In one embodiment, the method further comprises: and S5, if not, adjusting the voltage output by the charger to the storage battery according to the preset charging voltage curve of the storage battery, and adjusting the current output by the charger to the storage battery according to the preset charging current curve of the storage battery.
In this embodiment, the charging state of the storage battery can be determined according to the charging voltage curve of the storage battery and the charging current curve of the storage battery, so as to obtain the voltage and current that need to be output at the next stage of the battery, control the voltage and current that the charger outputs to the storage battery, and accurately output corresponding voltage and current to the storage battery, so as to ensure the charging safety of the storage battery; the charging time can also be acquired, the charging time is searched on a preset charging voltage curve of the storage battery and a preset charging current curve of the storage battery, the output voltage and current at the moment are found out, and then the output voltage and current are controlled according to the result.
In one embodiment, the method further comprises: s61, acquiring an actually measured input AC voltage value of the charger in real time; judging whether the actually measured input AC voltage value is within a preset charging condition range; and S71, if not, controlling to close the output end of the charger and giving an alarm.
In this embodiment, the step S61 specifically includes: acquiring an AC calibration voltage value of a charger, a corresponding AD value of the AC calibration voltage value and an AD value of an actually measured input AC voltage of the charger; and calculating to obtain an actually measured input voltage value according to the AC calibration voltage value of the charger, the corresponding AD value of the AC calibration voltage value and the AD value of the actually measured input AC voltage of the charger. The preset charging condition is as follows: 70V < measured input AC voltage value < 270V.
The AC voltage is a commercial power voltage output by a commercial power to the charger, an ADC module (Analog-Digital Converter) of the IC controller is used to obtain an AC calibration voltage value of the charger and a corresponding AD value thereof, and then a corresponding measured value is converted from the actually measured AD value according to a proportional relationship between each value and the corresponding AD value thereof, so that the value acquisition is faster and more convenient, and the calculation result is more accurate; such as: the conversion of the measured input AC voltage value from the AC calibration voltage value of the charger and its corresponding AD value and the AD value of the measured input AC voltage is performed by the following formula: the AC calibration voltage value and the AD value of the AC calibration voltage value are the AD value of the measured input AC voltage and the measured input AC voltage value, so that the measured AC voltage value can be converted from the AC calibration voltage value of the charger, the corresponding AD value thereof, and the AD value of the measured input AC voltage; and when the actually measured input AC voltage value is less than 70V, the low-voltage protection charger is started, and when the actually measured input AC voltage value is greater than 270V, the high-voltage protection charger is started, and the output end of the charger is closed.
In one embodiment, the method further comprises: s62, acquiring an actually measured temperature value of the charger in real time; judging whether the actually measured temperature value of the charger is within a preset charging condition range or not; and S72, if not, controlling to close the output end of the charger and giving an alarm.
In this embodiment, the step S62 specifically includes: acquiring a temperature value of a charger, a corresponding AD value of the temperature value and an AD value of an actually measured temperature value of the charger; and calculating the temperature value of the charger according to the temperature value of the charger, the AD value corresponding to the temperature value of the charger and the AD value of the actually measured temperature value of the charger. The preset charging condition is as follows: the measured temperature value was <100 ℃.
When the measured temperature value is larger than 100 ℃, starting a high-temperature early warning of the charger and closing the output end of the charger; the charger is started again within a certain temperature range to charge the storage battery, so that when the charger is automatically started to charge the storage battery, the temperature is guaranteed, the safety of the charger is further ensured, and the charger is prevented from being overheated and continuing to work to cause explosion and the like.
In one embodiment, the method further comprises: s63, acquiring the temperature value of the storage battery in real time; judging whether the temperature value of the storage battery is within a preset charging condition range or not; and S73, if not, controlling to close the output end of the charger and giving an alarm.
In this embodiment, the step S63 specifically includes: acquiring a temperature value of a storage battery, a corresponding AD value of the temperature value of the storage battery and an AD value of the temperature value of the storage battery; and calculating the temperature value of the storage battery according to the temperature value of the storage battery, the AD value of the storage battery and the AD value of the temperature value of the storage battery. The preset charging condition is as follows: the measured temperature value was <70 ℃.
The storage battery can generate heat in the charging process, when the temperature exceeds 70 ℃, the electrolyte in the storage battery is in an extremely active state, and dangerous accidents such as explosion of the storage battery can be caused by continuous charging; or the temperature value of the storage battery is greater than 70 ℃, starting the high-temperature early warning of the storage battery, and closing the output end of the charger; and an alarm is set to further protect the charger and further ensure that the charger can safely charge the storage battery.
In one embodiment, the method further comprises: acquiring an actually measured input AC voltage value of the charger, an actually measured temperature value of the charger and a temperature value of the storage battery in real time; judging whether the actually-measured input AC voltage value, the actually-measured temperature value of the charger and the temperature value of the storage battery are all within a preset charging condition range, if so, controlling the charger to output a charging signal; and after receiving the charging signal, controlling the charger to charge the storage battery.
In the present embodiment, the charging conditions are: 70V < AC voltage value <270V, actually measured temperature value <100 ℃ and temperature value of the storage battery <70 ℃, if the AC voltage value, the actually measured temperature value and the temperature value of the storage battery meet the conditions at the same time, the output end of the charger is started; the charger is ensured to safely charge the storage battery.
An apparatus for controlling a charger switch, as shown in fig. 2, comprises:
the first acquisition module 1 is used for acquiring a preset charging voltage curve of the storage battery and a preset charging current curve of the storage battery;
the second acquisition module 2 is used for acquiring a charging voltage value and a charging current value fed back by the storage battery in real time;
the drawing module 3 is used for drawing an actual charging voltage curve of the storage battery according to the charging voltage value and drawing an actual charging current curve of the storage battery according to the charging current value;
the comparison module 4 is used for comparing the actual charging voltage curve of the storage battery with a preset storage battery charging voltage curve and comparing the actual charging current curve with a preset charging current curve of the storage battery;
and the first control module 5 is used for closing the output end of the charger if the charging is successful and forbidding the charger to charge the storage battery.
The first acquisition module 1 acquires a corresponding charging voltage and charging current curve corresponding to each specification of the storage battery, the corresponding charging voltage and charging current curve of the storage battery can be measured according to experimental data and stored in a system, and the corresponding charging curve can be downloaded on the internet according to the specification and the model of the storage battery.
The second obtaining module 2 comprises: using an ADC module (Analog-Digital Converter) of the IC controller to obtain an AD value of a charging voltage value and an AD value of a charging current value of the charger; acquiring an output calibration voltage value and a corresponding AD value thereof, and acquiring an output calibration current value and a corresponding AD value thereof; obtaining the relation between the output calibration voltage value and the corresponding AD value thereof, the relation between the output calibration current value and the corresponding AD value thereof, and converting the charging voltage value according to a preset formula according to the relation between the output calibration voltage value and the corresponding AD value thereof and the AD value of the charging voltage value; the preset formula is as follows: the charging voltage value is output as a calibration voltage value and corresponds to the AD value/the AD value of the charging voltage value; the conversion method of the measured output current is similar, and is not described in detail herein.
Further, a second acquisition module acquires a feedback signal output by the storage battery to the charger, and acquires an AD value of the charging voltage value and an AD value of the charging current value according to the feedback signal; the charging voltage value and the charging current value received by the storage battery are obtained, the storage battery outputs the received voltage and battery signals to the charger in real time, the current voltage and current value of the storage battery are reflected more accurately, and whether the battery is fully charged or not can be judged more accurately.
The drawing module 3 draws an actual charging voltage curve of the storage battery and an actual charging current curve of the storage battery by taking time as an abscissa and taking the voltage and current numerical values as an ordinate.
The comparing module 4 compares the actual charging voltage curve of the storage battery with a preset charging voltage curve, and comprises the following steps: for example, after T1, the voltage of the battery reaches a maximum value, and constant voltage current reduction is performed after the corresponding voltage point, that is, whether the first constant voltage point on the actual charging voltage curve is consistent with the preset constant voltage point of the charging voltage of the battery; after T2 time, whether the actual charging voltage curve is the same as the preset charging voltage curve enters constant current voltage reduction; the storage battery is fully charged until the actual charging voltage curve is consistent with the preset storage battery charging voltage curve and is stabilized at a certain voltage value; the comparison method according to the actual charging current curve and the preset charging current curve of the storage battery is consistent with the comparison method according to the actual charging voltage curve and the preset charging voltage curve of the storage battery, and details are not repeated here.
The comparison module 4 can also compare the constant voltage time on the actual charging voltage curve with the constant voltage time of the preset charging voltage curve, and at this time, even if the current voltage values are inconsistent, the next stage is performed, that is, the time inflection point on the actual charging voltage curve is consistent with the time inflection point on the preset charging voltage curve, and finally, the voltage stabilization stage is also performed at the same time, that is, the battery is judged to be fully charged.
The first control module 5 sends a closing signal, and controls to close the output end of the charger after receiving the closing signal of the charger, so that the charger prohibits charging the storage battery.
In this embodiment, obtain the actual measurement output voltage value of the charger actual measurement and the actual measurement output current value that the feedback of battery was returned through the software, again according to this charging voltage value and actual measurement current value and the charging curve of battery, judge the current charged state of this battery, if full of, then in time close the output of charger, avoid the battery overcharge, solved current charger and can't timely shutdown when being full of the electricity, caused the charger still to continue to charge under the battery full of the electricity condition, lead to the problem of battery overcharge.
In one embodiment, the comparison module 4 comprises: the first comparison unit and the second comparison unit are respectively used for comparing the similarity between the actual charging voltage curve and a preset storage battery charging voltage curve, the similarity between the actual charging current curve and a preset storage battery charging current curve; judging whether the similarity is in a preset range interval or not; if yes, the battery is judged to be fully charged.
In one embodiment, the similarity includes, but is not limited to: whether the inflection points of the actual charging voltage curve and a preset storage battery charging voltage curve are consistent or not, and whether the voltages are within a preset range (error is +/-2V) or the highest points are consistent or not are judged, if the inflection points are consistent, the same stage is judged, and after all the stages are finished, the full charging is judged; and judging that the knee points are full if the inflection points are inconsistent, but the highest points are consistent and finally tend to be gentle.
In one embodiment, the method further comprises: and the second control module is used for adjusting the voltage output by the charger to the storage battery according to the preset charging voltage curve of the storage battery and adjusting the current output by the charger to the storage battery according to the preset charging current curve of the storage battery if the charging voltage curve of the storage battery is not preset.
In this embodiment, the second control module may determine the charging state of the storage battery according to the charging voltage curve of the storage battery and the charging current curve of the storage battery, so as to obtain the voltage and current that need to be output at the next stage of the battery, and control the voltage and current that the charger outputs to the storage battery, so as to accurately output corresponding voltage and current to the storage battery, thereby ensuring the charging safety of the storage battery; the charging time can also be acquired, the charging time is searched on a preset charging voltage curve of the storage battery and a preset charging current curve of the storage battery, the output voltage and current at the moment are found out, and then the output voltage and current are controlled according to the result.
In one embodiment, the method further comprises: the third acquisition module is used for acquiring the actually-measured input AC voltage value of the charger in real time; judging whether the actually measured input AC voltage value is within a preset charging condition range; and the third control module is used for controlling to close the output end of the charger and giving an alarm if the output end of the charger is not closed.
In this embodiment, the third obtaining module obtains an AC calibration voltage value of the charger and an AD value corresponding thereto, and an AD value of an input AC voltage actually measured by the charger; and calculating to obtain an actually measured input voltage value according to the AC calibration voltage value of the charger, the corresponding AD value of the AC calibration voltage value and the AD value of the actually measured input AC voltage of the charger. The preset charging condition is as follows: 70V < measured input AC voltage value < 270V.
The AC voltage is a commercial power voltage output by a commercial power to the charger, an ADC module (Analog-Digital Converter) of the IC controller is used to obtain an AC calibration voltage value of the charger and a corresponding AD value thereof, and then a corresponding measured value is converted from the actually measured AD value according to a proportional relationship between each value and the corresponding AD value thereof, so that the value acquisition is faster and more convenient, and the calculation result is more accurate; such as: the conversion of the measured input AC voltage value from the AC calibration voltage value of the charger and its corresponding AD value and the AD value of the measured input AC voltage is performed by the following formula: the AC calibration voltage value and the AD value of the AC calibration voltage value are the AD value of the measured input AC voltage and the measured input AC voltage value, so that the measured AC voltage value can be converted from the AC calibration voltage value of the charger, the corresponding AD value thereof, and the AD value of the measured input AC voltage; and when the actually measured input AC voltage value is less than 70V, the low-voltage protection charger is started, and when the actually measured input AC voltage value is greater than 270V, the high-voltage protection charger is started, and the output end of the charger is closed.
In one embodiment, the method further comprises: the fourth acquisition module is used for acquiring the actually measured temperature value of the charger in real time; judging whether the actually measured temperature value of the charger is within a preset charging condition range or not; and the fourth control module is used for controlling to close the output end of the charger and giving an alarm if the output end of the charger is not closed.
In this embodiment, the fourth obtaining module obtains the temperature value of the charger, the AD value corresponding to the temperature value of the charger, and the AD value of the measured temperature value of the charger; and calculating the temperature value of the charger according to the temperature value of the charger, the AD value corresponding to the temperature value of the charger and the AD value of the actually measured temperature value of the charger. The preset charging condition is as follows: the measured temperature value was <100 ℃.
When the measured temperature value is greater than 100 ℃, starting the high-temperature early warning of the charger, and controlling to close the output end of the charger by the fourth control module; the charger is started again within a certain temperature range to charge the storage battery, so that when the charger is automatically started to charge the storage battery, the temperature is guaranteed, the safety of the charger is further ensured, and the charger is prevented from being overheated and continuing to work to cause explosion and the like.
In one embodiment, the method further comprises: the fifth acquisition module is used for acquiring the temperature value of the storage battery in real time; judging whether the temperature value of the storage battery is within a preset charging condition range or not; and the fifth control module is used for controlling to close the output end of the charger and giving an alarm if the output end of the charger is not closed.
In this embodiment, the fifth obtaining module obtains the temperature value of the storage battery, the AD value corresponding to the temperature value of the storage battery, and the AD value of the temperature value of the storage battery; and calculating the temperature value of the storage battery according to the temperature value of the storage battery, the AD value of the storage battery and the AD value of the temperature value of the storage battery. The preset charging condition is as follows: the battery temperature value is <70 ℃.
The storage battery can generate heat in the charging process, when the temperature exceeds 70 ℃, the electrolyte in the storage battery is in an extremely active state, and dangerous accidents such as explosion of the storage battery can be caused by continuous charging; when the temperature value of the storage battery is larger than 70 ℃, the fifth control module controls the high-temperature early warning of starting the storage battery and closes the output end of the charger; and an alarm is set to further protect the charger and further ensure that the charger can safely charge the storage battery.
In one embodiment, the method further comprises: the sixth acquisition module is used for acquiring an actually-measured input AC voltage value of the charger, an actually-measured temperature value of the charger and a temperature value of the storage battery in real time; the sixth control module is used for controlling the charger to output a charging signal if the measured input AC voltage value, the measured temperature value of the charger and the temperature value of the storage battery are all within a preset charging condition range; and after receiving the charging signal, controlling the charger to charge the storage battery.
In this embodiment: the charging conditions were: the output end of the charger is controlled to be started by the sixth control module only if the AC voltage value is 70V < the AC voltage value <270V, the actually-measured temperature value <100 ℃ and the temperature value of the storage battery is less than 70 ℃, and if the AC voltage value, the actually-measured temperature value and the temperature value of the storage battery simultaneously meet the conditions; the charger is ensured to safely charge the storage battery.
A computer device, as shown in fig. 3, comprises a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor implements the method described above.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method as set forth above.
It will be understood by those of ordinary skill in the art that all or a portion of the processes of the methods of the embodiments described above may be implemented by a computer program that may be stored on a non-volatile computer-readable storage medium, which when executed, may include the processes of the embodiments of the methods described above, wherein any reference to memory, storage, database, or other medium provided herein and used in the embodiments may include non-volatile and/or volatile memory.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method of controlling a charger switch, comprising the steps of:
acquiring a preset charging voltage curve of a storage battery and a preset charging current curve of the storage battery;
acquiring a charging voltage value and a charging current value of the storage battery in real time;
drawing an actual charging voltage curve of the storage battery according to the charging voltage value, and drawing an actual charging current curve of the storage battery according to the charging current value;
comparing the actual charging voltage curve of the storage battery with a preset storage battery charging voltage curve, and comparing the actual charging current curve with a preset storage battery charging current curve;
judging whether the battery is fully charged according to the comparison result;
if yes, the output end of the charger is closed, and the charger is forbidden to charge the storage battery.
2. The method of claim 1, wherein the step of determining whether the battery is fully charged according to the comparison result comprises:
respectively comparing the similarity of the actual charging voltage curve with a preset storage battery charging voltage curve and the similarity of the actual charging current curve with a preset storage battery charging current curve;
judging whether the similarity is in a preset range interval or not;
if yes, the battery is judged to be fully charged.
3. The method of controlling a charger switch of claim 1, further comprising: if not, adjusting the voltage output to the storage battery by the charger according to the preset charging voltage curve of the storage battery; and adjusting the current output by the charger to the storage battery according to the preset storage battery charging current curve.
4. The method of controlling a charger switch of claim 1, further comprising:
acquiring an actually measured input AC voltage value of the charger in real time;
judging whether the actually measured input AC voltage value is within a preset charging condition range;
if not, the output end of the charger is controlled to be closed, and an alarm is given.
5. The method of controlling a charger switch of claim 1, further comprising:
acquiring an actually measured temperature value of the charger in real time;
judging whether the actually measured temperature value of the charger is within a preset charging condition range or not;
if not, the output end of the charger is controlled to be closed, and an alarm is given.
6. The method of controlling a charger switch of claim 1, further comprising:
acquiring a temperature value of the storage battery in real time;
judging whether the temperature value of the storage battery is within a preset charging condition range or not;
if not, the output end of the charger is controlled to be closed, and an alarm is given.
7. The method of controlling a charger switch according to any one of claim 1, further comprising:
acquiring an actually measured input AC voltage value of the charger, an actually measured temperature value of the charger and a temperature value of the storage battery in real time;
judging whether the actually measured input AC voltage value, the actually measured temperature value of the charger and the temperature value of the storage battery are all within a preset charging condition range,
if yes, controlling the charger to output a charging signal;
and after receiving the charging signal, controlling the charger to charge the storage battery.
8. An apparatus for controlling a switch of a charger, comprising:
the first acquisition module is used for acquiring a preset charging voltage curve of the storage battery and a preset charging current curve of the storage battery;
the second acquisition module is used for acquiring a charging voltage value and a charging current value fed back by the storage battery in real time;
the drawing module is used for drawing an actual charging voltage curve of the storage battery according to the charging voltage value and drawing an actual charging current curve of the storage battery according to the charging current value;
the comparison module is used for comparing the actual charging voltage curve of the storage battery with a preset storage battery charging voltage curve and comparing the actual charging current curve with a preset storage battery charging current curve;
and the first control module is used for closing the output end of the charger and forbidding the charger to charge the storage battery if the first control module is yes.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method according to any one of claims 1 to 7 when executing the program.
10. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method of any one of claims 1 to 7.
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