CN113504422A - Super capacitor module monitoring and early warning method, device, storage medium and device - Google Patents
Super capacitor module monitoring and early warning method, device, storage medium and device Download PDFInfo
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Abstract
The invention discloses a super capacitor module monitoring and early warning method, a device, a storage medium and a device, wherein the method comprises the steps of obtaining voltage information, current information, temperature information and internal resistance information of a super capacitor module during working; predicting the attenuation life of the super capacitor module by a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the attenuation life of the module; and determining the residual service life of the super capacitor module according to the attenuation service life of the module. According to the method and the device, the attenuation life of the super capacitor module is predicted through the preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information, the attenuation life of the module is obtained, the residual life of the super capacitor module is further obtained, and the safety early warning information is generated for early warning when the residual life of the module does not meet the preset condition, so that the monitoring and early warning on the life of the super capacitor module are realized.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a super capacitor module monitoring and early warning method, a super capacitor module monitoring and early warning device, super capacitor module monitoring equipment, a super capacitor module storage medium and a super capacitor module storage device.
Background
The super capacitor is a high-power density energy storage device which utilizes an active carbon porous electrode and an electrolyte to form a double-layer structure to store electric energy, has the performance between that of an electrostatic capacitor and a storage battery, and has the advantages of more cycle times, wide working temperature range, high power density, high charging and discharging speed, environmental friendliness and the like. In the practical application of the high-power super capacitor, the service life is not monitored basically, the conventional method is to use the design service life as the reference and use the service time as the service life ending condition, and the difference of the service environment causes the deviation between the actual service life and the design value to be larger, so that the service life of the super capacitor module cannot be monitored in the practical use, and the situation of waste caused by replacement in advance or replacement after the capacitor is damaged exists.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a super capacitor module monitoring and early warning method, equipment, a storage medium and a device, and aims to solve the technical problem that the service life of a super capacitor module cannot be monitored in the prior art.
In order to achieve the above object, the present invention provides a method for monitoring and pre-warning a super capacitor module, wherein the method for monitoring and pre-warning the super capacitor module comprises the following steps:
acquiring voltage information, current information, temperature information and internal resistance information of the super capacitor module during working;
predicting the attenuation life of the super capacitor module through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the attenuation life of the module;
and determining the residual service life of the module of the super capacitor module according to the attenuation service life of the module, and generating safety early warning information for early warning when the residual service life of the module does not meet preset conditions.
Optionally, the step of predicting the attenuation life of the supercapacitor module by presetting a supercapacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information, and obtaining the module attenuation life includes:
predicting the attenuation life of the super capacitor module by presetting a first super capacitor life curve according to the voltage information and the current information to obtain a first attenuation life;
predicting the attenuation life of the super capacitor module by presetting a second super capacitor life curve according to the temperature information to obtain a second attenuation life;
predicting the attenuation life of the super capacitor module by presetting a third super capacitor life curve according to the internal resistance information to obtain a third attenuation life;
and determining the module decay life of the super capacitor module according to the first decay life, the second decay life and the third decay life.
Optionally, the predicting the attenuation life of the supercapacitor module by presetting a third supercapacitor life curve according to the internal resistance information, and the step of obtaining the third attenuation life includes:
determining the charging and discharging frequency information of the super capacitor module according to the internal resistance information;
and predicting the attenuation life of the super capacitor module by presetting a third super capacitor life curve according to the charging and discharging times information to obtain a third attenuation life.
Optionally, before the step of predicting the decay life of the supercapacitor module by presetting a first supercapacitor life curve according to the voltage information and the current information and obtaining a first decay life, the method further includes:
acquiring voltage sample information, current sample information and first attenuation life sample information, and establishing a preset first super capacitor life curve according to the voltage sample information, the current sample information and the first attenuation life sample information;
acquiring temperature sample information and second attenuation life sample information, and establishing a preset second super capacitor life curve according to the temperature sample information and the second attenuation life sample information;
acquiring charge and discharge frequency sample information and third attenuation life sample information, and establishing a preset third super capacitor life curve according to the charge and discharge frequency sample information and the third attenuation life sample information.
Optionally, the predicting the decay life of the supercapacitor module by presetting a first supercapacitor life curve according to the voltage information and the current information, and the step of obtaining the first decay life includes:
acquiring first working time of the super capacitor module in the states of the voltage information and the current information;
and predicting the attenuation life of the super capacitor module by presetting a first super capacitor life curve according to the voltage information, the current information and the first working time to obtain a first attenuation life.
Optionally, the predicting the decay life of the supercapacitor module by presetting a second supercapacitor life curve according to the temperature information, and the step of obtaining the second decay life includes:
acquiring second working time of the super capacitor module under the temperature information;
and predicting the attenuation life of the super capacitor module by presetting a second super capacitor life curve according to the temperature information and the second working time to obtain a second attenuation life.
Optionally, after the step of determining the remaining life of the module of the super capacitor module according to the decay life of the module, the method further includes:
acquiring the capacity attenuation change rate, the temperature change rate and the internal resistance change rate of the super capacitor module in real time and the assembly unbalance of the super capacitor membrane groups which are connected in series;
and when at least one of the capacity fading rate, the temperature change rate, the internal resistance change rate or the assembly unbalance degree does not meet the preset condition, generating the safety early warning information for early warning.
In addition, in order to achieve the above object, the present invention further provides a monitoring and early warning device for a super capacitor module, where the monitoring and early warning device for a super capacitor module includes a memory, a processor, and a monitoring and early warning program for a super capacitor module, which is stored in the memory and can be run on the processor, and the monitoring and early warning program for a super capacitor module is configured to implement the steps of the monitoring and early warning method for a super capacitor module.
In addition, in order to achieve the above object, the present invention further provides a storage medium, where the storage medium stores a monitoring and early warning program for a super capacitor module, and the monitoring and early warning program is executed by a processor to implement the steps of the monitoring and early warning method for a super capacitor module.
In addition, in order to achieve the above object, the present invention further provides a monitoring and early warning device for a super capacitor module, including: the system comprises an information acquisition module, an attenuation life prediction module, a residual life determination module and a safety monitoring module;
the information acquisition module is used for acquiring voltage information, current information, temperature information and internal resistance information of the super capacitor module during working;
the attenuation life prediction module is used for predicting the attenuation life of the super capacitor module through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the attenuation life of the module;
the residual life determining module is used for determining the residual life of the module of the super capacitor module according to the attenuation life of the module, and generating safety early warning information for early warning when the residual life of the module does not meet preset conditions.
The invention provides a super capacitor module monitoring and early warning method, equipment, a storage medium and a device, wherein the method comprises the steps of obtaining voltage information, current information, temperature information and internal resistance information of a super capacitor module during working; predicting the attenuation life of the super capacitor module through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the attenuation life of the module; and determining the residual service life of the super capacitor module according to the attenuation service life of the module. According to the method and the device, the attenuation life of the super capacitor module is predicted through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information, the attenuation life of the module is obtained, the remaining life of the super capacitor module is further obtained, early warning is carried out when the remaining life of the module does not meet preset conditions, and therefore the purpose of monitoring and early warning the service life of the super capacitor module is achieved.
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Fig. 1 is a schematic structural diagram of a super capacitor module monitoring and early warning device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a monitoring and early warning method for a super capacitor module according to a first embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a monitoring and early warning method for a super capacitor module according to a second embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a monitoring and early warning method for a super capacitor module according to a third embodiment of the present invention;
fig. 5 is a block diagram of a monitoring and early warning device of a super capacitor module according to a first embodiment of the present invention.
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.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a super capacitor module monitoring and early warning device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the monitoring and early warning device of the super capacitor module may include: a data collection interface, a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), and the optional user interface 1003 may further include a standard wired interface and a wireless interface, and the wired interface for the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) or a Non-volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the supercapacitor module monitoring and warning device, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005 identified as a computer storage medium may include an operating system, a network communication module, a user interface module, and a super capacitor module monitoring and warning program.
In the monitoring and early warning device of the super capacitor module shown in fig. 1, the network interface 1004 is mainly used for connecting a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting user equipment; the super capacitor module monitoring and early warning device calls a super capacitor module monitoring and early warning program stored in the memory 1005 through the processor 1001, and executes the super capacitor module monitoring and early warning method provided by the embodiment of the invention.
Based on the hardware structure, the embodiment of the monitoring and early warning method for the super capacitor module is provided.
Referring to fig. 2, fig. 2 is a schematic flow chart of a monitoring and early warning method for a super capacitor module according to a first embodiment of the present invention, and the monitoring and early warning method for a super capacitor module according to the first embodiment of the present invention is provided.
In a first embodiment, the method for monitoring and pre-warning the super capacitor module comprises the following steps:
step S10: and acquiring voltage information, current information, temperature information and internal resistance information of the super capacitor module during working.
It should be understood that the execution main body of the embodiment is a super capacitor module monitoring and early warning device, and the super capacitor module monitoring and early warning device includes an information acquisition module and an information processing module. The information acquisition module can be a multifunctional sensor or a plurality of single-function sensors, and is used for acquiring temperature information, voltage information, internal resistance and other information of the super capacitor module. The information processing module can be a single chip microcomputer chip, an ARM chip and the like. The super capacitor module monitoring and early warning equipment can monitor the super capacitor module online in real time and early warn when the super capacitor module is abnormal; certainly, the super capacitor module monitoring and early warning equipment can also perform interval monitoring on the super capacitor module at intervals of a certain time and perform early warning when the super capacitor module is abnormal; the super capacitor module monitoring and early warning equipment can also monitor the super capacitor module when a user starts the equipment and stops monitoring when the equipment is closed. The specific working mode of the monitoring and early warning device of the super capacitor module can be determined according to the energy loss and the working duration of the super capacitor module, and is not particularly limited herein. For example, when the super capacitor module just begins to be used, the super capacitor module can be monitored and early warned every certain time, and when the super capacitor module is used for a certain time, the possibility that the super capacitor module is abnormal is increased, and the on-line real-time monitoring and early warning can be realized.
It should be noted that the super capacitor module is a combination of a plurality of high power capacitors. The voltage information refers to the information of the voltage received by the super capacitor module or the released voltage when the super capacitor module works. The current information refers to current information generated by the super capacitor module during charging or discharging. The super capacitor module is similar to a battery, and the voltage information refers to the voltage information received by the battery when the battery is charged, and the voltage information refers to the initial voltage information released by the battery when the battery is discharged. The temperature information refers to the temperature state of the capacitor inside the super capacitor module when the super capacitor module works. The temperature information may be a temperature mainly formed by heat generated by the super capacitor module during operation. The internal resistance information refers to the internal resistance value of the super capacitor in the current working state. Along with the long-time use of super capacitor module, the internal resistance of super capacitor module can increase along with the increase of the number of times of charging, and super capacitor charging module's capacity also can reduce along with the increase of the number of times of charging gradually simultaneously.
In specific implementation, the monitoring and early warning device of the super capacitor module can measure the voltage information, the current information, the temperature information and the internal resistance information of the super capacitor module through the multimeter and the temperature sensor which are set in a time limit mode, and certainly, the information of the super capacitor module can also be measured in other modes. The super capacitor module monitoring and early warning equipment can measure the temperature information of a single capacitor in the super capacitor module through the temperature sensor connected with the super capacitor module, and certainly, the temperature sensor can also measure the temperature information of the super capacitor module under the working environment. The internal resistance information can be obtained by calculating the voltage information and the corresponding current information of the universal variable measurement super capacitor module through a preset program.
Step S20: and predicting the attenuation life of the super capacitor module through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the module attenuation life.
It should be noted that the preset supercapacitor life curve is a curve for predicting the attenuation life of the supercapacitor according to the current voltage information, current information, temperature information and internal resistance information. The service life of the super capacitor is related to the attenuation service life of the super capacitor along with the working state, the environmental state and the charging and discharging times of the super capacitor module. For example, the working voltage of the super capacitor module exceeds the standard voltage of the super capacitor module, and at the moment, the super capacitor module is in a load state, so that the service life of the super capacitor module is greatly reduced. The decay life of the module refers to the part of the life of the super capacitor module, which reduces the service life of the super capacitor module due to the conditions of load state, high temperature state and the like. And determining the current capacitance allowance of the super capacitor module according to the voltage information and the current information of the super capacitor module and the charging time or the discharging time of the super capacitor module.
In specific implementation, the supercapacitor module monitoring and early warning device may search the acquired voltage information, current information, temperature information and internal resistance information by using corresponding values in a preset supercapacitor life curve to obtain the module attenuation life of the supercapacitor module in the current working state and the current environmental state. Certainly, the monitoring and early warning equipment of the super capacitor module can also determine the attenuation life of the module marked by the current working state, then calculate the attenuation life of the module caused by the environmental state, and determine the attenuation life of the module caused by too many charging and discharging times of the super capacitor module according to the internal resistance information. Certainly, in the module decay life acquisition process, the order of determining the module decay life is not limited.
Step S30: and determining the residual service life of the super capacitor module according to the attenuation service life of the module, and carrying out early warning when the residual service life of the module does not meet preset conditions.
It should be noted that the remaining life of the module refers to the time length that the super capacitor module can continue to operate. In the specific implementation, after the attenuation life of the module is determined, the total life of the super capacitor module is a fixed value, so that the remaining life of the super capacitor module can be determined according to the total life of the super capacitor module and the attenuation life of the module. The preset condition refers to a condition preset for determining the current state of the super capacitor module. In this embodiment, the preset condition refers to a remaining life condition of the super capacitor module, and may also include a change condition of the super capacitor module, such as an internal resistance change rate, a temperature change rate, and the like, which is not specifically limited herein.
In the embodiment, a method for monitoring and early warning a super capacitor module is provided, which includes acquiring voltage information, current information, temperature information and internal resistance information of the super capacitor module during working; predicting the attenuation life of the super capacitor module through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the attenuation life of the module; and determining the residual service life of the super capacitor module according to the attenuation service life of the module. According to the embodiment, the attenuation life of the super capacitor module is predicted through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information, the attenuation life of the module is obtained, the remaining life of the module of the super capacitor module is further obtained, early warning is carried out when the remaining life of the module does not meet preset conditions, and therefore the purpose of monitoring and early warning the service life of the super capacitor module is achieved.
Referring to fig. 3, fig. 3 is a schematic flow chart of a monitoring and early warning method for a super capacitor module according to a second embodiment of the present invention, and the second embodiment of the monitoring and early warning method for a super capacitor module according to the present invention is provided based on the first embodiment shown in fig. 2.
In the second embodiment, the step S20 includes:
step S21: and predicting the attenuation life of the super capacitor module by presetting a first super capacitor life curve according to the voltage information and the current information to obtain a first attenuation life.
It should be noted that the preset first super capacitor life curve is a curve for predicting a specific value of the super capacitor life attenuation caused by the working state of the super capacitor module in the current working state. The first attenuation life refers to the life of the super capacitor module attenuation caused by the current working state of the super capacitor. The service life of the super capacitor module is greatly influenced when the super capacitor module is not in a standard working state for a long time. For example, when the super capacitor module is operated in an overload state for a long time, the service life of the super capacitor module is greatly reduced, and the service life of the battery is also greatly reduced due to battery feeding. The larger the range of the working voltage of the super capacitor module exceeding the rated voltage value is, the shorter the service life of the super capacitor module is. For example, under a standard environmental condition, a standard temperature of 15 degrees celsius is maintained, and the service life of the super capacitor module can reach 20 years in a working state where the service voltage is 2.5V, but the service life of the super capacitor module may be 12 years or even shorter at a working voltage of 2.6V, and of course, the service life of the super capacitor module may be shorter at a working voltage of 2.7V.
In specific implementation, the monitoring and early warning device of the super capacitor module may search the first attenuation life of the super capacitor module according to a preset first super capacitor life curve according to the current working voltage state and current state of the super capacitor module, and may also calculate the first attenuation life according to a formula derived from parameters of the curve, which is not specifically limited herein.
Step S22: and predicting the attenuation life of the super capacitor module through a preset second super capacitor life curve according to the temperature information to obtain a second attenuation life.
It should be noted that the preset second super capacitor life curve is a curve for predicting a specific value of super capacitor life attenuation of the super capacitor module in the current environment state caused by the environment state. The second decay life refers to the life of the super capacitor module decay caused by the current environment state of the super capacitor. The service life of the super capacitor module is greatly influenced when the super capacitor module is not in a standard environment state for a long time, for example, the super capacitor module is in an environment with the production time of more than 50 ℃, and the service life of the super capacitor module is greatly reduced. The larger the range of the temperature information in the environmental state of the super capacitor module exceeding the rated temperature is, the shorter the service life of the super capacitor module is. For example, under a standard working condition, when a working state of 2.5V is maintained, a standard temperature of 15 degrees celsius is used, the service life of the super capacitor module can reach 20 years, but when the temperature of a single capacitor is at 25 degrees celsius for a long time, the service life of the super capacitor module may be 10 years, and of course, when the single capacitor is at 45 degrees celsius for a long time, the service life of the super capacitor module may only be one year.
In specific implementation, the super capacitor module monitoring and early warning device may search the second attenuation life of the super capacitor module according to a preset second super capacitor life curve according to the temperature information of the environment of the current super capacitor module, and may also calculate the second attenuation life according to a formula derived from parameters of the curve, which is not specifically limited herein.
Step S23: and predicting the attenuation life of the super capacitor module by presetting a third super capacitor life curve according to the internal resistance information to obtain a third attenuation life.
It should be noted that the preset third supercapacitor life curve is a curve for predicting a specific value of the supercapacitor life attenuation caused by the change of the internal resistance of the supercapacitor module when the number of charging and discharging of the supercapacitor module is too large. The third attenuation life refers to the life of the super capacitor module attenuation caused by the internal resistance change of the super capacitor. As is known, the amount of electricity released by the battery can be gradually reduced along with the long-term use of the battery, but the amount of charge of the battery cannot be reduced, which is caused by the increase of the internal resistance of the battery along with the continuous increase of the number of charge and discharge times. The more the charging and discharging times are, the larger the internal resistance change of the battery is, the smaller the capacity of the battery is, and the same is true of the super capacitor module.
In specific implementation, the monitoring and early warning device of the super capacitor module may determine a third attenuation life attenuated by the super capacitor through a preset third super capacitor life curve according to the acquired internal resistance information of the super capacitor module. For example, the specific resistance value of the internal resistance information may be set to the third decay life corresponding to the same resistance value in the preset third supercapacitor life curve.
Step S24: and determining the module decay life of the super capacitor module according to the first decay life, the second decay life and the third decay life.
Note that, in the present embodiment, theThe standard life of the super capacitor module can be defined as LallThe remaining life of the super capacitor module is defined as LtoThe first decay life due to the voltage information is defined as LvThe second decay life is defined as LtempThe third decay life is defined as Lc(ii) a At this time, L can bev、Ltemp、LcThe sum yields the total module decay life. Of course the following steps may be according to the formula: l isto＝Lall-Lv-Ltemp-LcAnd obtaining the residual service life of the super capacitor module.
Wherein the step S23 includes:
step S231: and determining the charging and discharging frequency information of the super capacitor module according to the internal resistance information.
It should be noted that the resistance of the internal resistance of the super capacitor module increases with the increase of the charging and discharging times of the super capacitor module. The super capacitor module monitoring and early warning equipment can perform reverse thrust on the charging and discharging frequency information of the super capacitor module according to the current internal resistance information of the super capacitor module to obtain the current charging and discharging information of the super capacitor module.
In specific implementation, the super capacitor module monitoring and early warning device may determine the charging and discharging times of the super capacitor module according to the specific resistance value of the obtained internal resistance information and the related parameter information of the super capacitor module, for example, when the super capacitor module is charged 1000 times, the resistance value of the internal resistance in the super capacitor module may have slight changes; when the super capacitor module is charged and discharged 7000 times, the resistance value of the internal resistance of the super capacitor module may be 1.3 times of the initial value of the internal resistance, the resistance value change of the internal resistance of the super capacitor module is obvious, and the capacity change of the super capacitor module is also obvious.
Step S232: and predicting the attenuation life of the super capacitor module by presetting a third super capacitor life curve according to the charging and discharging times information to obtain a third attenuation life.
It should be noted that, in this embodiment, the monitoring and early warning device of the super capacitor module may determine, according to the obtained charging and discharging times of the super capacitor module, a third attenuation life of the super capacitor by presetting a third super capacitor life curve. For example, the number of charging and discharging times may be a third decay life corresponding to the same resistance value in the preset third super capacitor life curve.
Before the step S21, the method further includes:
step S21': acquiring voltage sample information, current sample information and first attenuation life sample information, and establishing a preset first super capacitor life curve according to the voltage sample information and the first attenuation life sample information.
It should be noted that a preset super capacitor module life curve needs to be established before the attenuation life of the super capacitor module is predicted, and then the attenuation life of the super capacitor module is determined according to the established preset super capacitor module life curve.
It should be understood that the voltage sample information is voltage information when a large number of super capacitor modules work, and the same is true of the current sample information, and the first decay life sample information is sample information corresponding to decay life corresponding to the voltage sample information. And fitting a preset first super-capacitor curve according to the voltage sample information, the current sample information and the attenuation life sample information to obtain a first super-capacitor life curve.
In specific implementation, the supercapacitor module monitoring and early warning device may perform linear fitting on the voltage sample information and the first decay life sample information of the supercapacitor module on a coordinate system to obtain a preset first supercapacitor curve, may also calculate related parameter information according to the voltage sample information and the first decay life sample information, and then obtain the preset first supercapacitor curve according to the related parameter information, and may also perform other methods, such as neural network training, deep learning, and the like, which is not specifically limited herein.
Step S22': acquiring temperature sample information and second attenuation life sample information, and establishing a preset second super capacitor life curve according to the temperature sample information and the second attenuation life sample information.
It should be noted that the temperature sample information is temperature information of a single capacitor inside the module when a large number of super capacitor modules work, and the second decay life sample information is sample information corresponding to the decay life corresponding to the temperature sample information. And fitting a preset second super-capacitor curve according to the temperature sample information and the attenuation life sample information to obtain a second super-capacitor life curve.
In specific implementation, the monitoring and early warning device of the super capacitor module may perform linear fitting on the temperature sample information and the second decay life sample information of the super capacitor module on a coordinate system to obtain a preset second super capacitor curve, and may also calculate related parameter information according to the temperature sample information and the first decay life sample information, and then obtain the preset second super capacitor curve according to the related parameter information.
Step S23': acquiring charge and discharge frequency sample information and third attenuation life sample information, and establishing a preset third super capacitor life curve according to the charge and discharge frequency sample information and the third attenuation life sample information.
It should be noted that the charge and discharge frequency sample information is information of the number of charge and discharge frequencies of the large number of super capacitor modules after using a certain working time, and the third decay life sample information is sample information corresponding to the decay life corresponding to the charge and discharge frequency sample information. According to the charge and discharge times sample information and the decay life sample information, a preset third super capacitor curve can be fitted to obtain a third super capacitor life curve, the specific implementation process can refer to the establishing mode of the first super capacitor life curve or the second super capacitor life curve, and details are not repeated here.
In this embodiment, the step S21 includes:
step S211: and acquiring first working time of the super capacitor module in the voltage information and current information states.
It should be noted that, when the attenuation life of the super capacitor module is predicted, it is necessary to determine the first working time of the super capacitor module in the overload state, and convert the first working time into the corresponding working time in the standard state, for example, in the overload working state, the relation between the first working time and the standard working time is 2 times, and at this time, in the overload working state, working for one hour is equal to the attenuation life of working for two hours in the standard condition. When the remaining life of the super capacitor module needs to be determined, the life of the capacitor module consumed in the current state needs to be converted into the service life of the capacitor module in the corresponding standard state, and certainly, the service life of the capacitor module in the standard state can also be converted into the service life of the capacitor module in the service state under the condition that the service state is determined.
In implementation, the monitoring and early warning device of the super capacitor module can time the working time of the super capacitor module in the current working state, and the recorded result is used as the first working time.
Step S212: and predicting the attenuation life of the super capacitor module by presetting a first super capacitor life curve according to the voltage information, the current information and the first working time to obtain a first attenuation life.
It should be noted that, in this embodiment, the supercapacitor module monitoring and early warning device may determine, according to the voltage information and a preset first supercapacitor life curve, a conversion coefficient between a first working time in a current working state and a working time in a standard state, and then determine a specific value of the first decay life according to the first working time and a corresponding conversion coefficient.
In this embodiment, the step S22 includes:
step S221: and acquiring second working time of the super capacitor module under the temperature information.
It should be noted that, when the attenuation life of the super capacitor module is predicted, the second working time of the super capacitor module in the high temperature state needs to be determined, and the second working time is converted into the corresponding working time in the standard state, for example, in the high temperature working state, the relationship between the second working time and the standard working time is 3 times, and at this time, in the high temperature working state, working for one hour is equal to the attenuation life of working for two hours in the standard condition. When the remaining life of the super capacitor module needs to be determined, the life of the capacitor module consumed in the current temperature state needs to be converted into the service life of the capacitor module in the corresponding standard state, and certainly, the service life of the capacitor module in the standard state can also be converted into the service life of the capacitor module in the service state under the condition that the service state is determined.
Step S222: and predicting the attenuation life of the super capacitor module by presetting a second super capacitor life curve according to the temperature information and the second working time to obtain a second attenuation life.
It should be noted that, in this embodiment, the supercapacitor module monitoring and early warning device may determine, according to the temperature information and a preset second supercapacitor life curve, a conversion coefficient between a second working time in the current working state and a working time in the standard state, and then determine a specific value of the second decay life according to the second working time and a corresponding conversion coefficient. When the lifetime of the super capacitor module is halved, the temperature change Δ T in the working environment is [ lg (L)all/Lh)]/lg2 wherein LhThe service life of the super capacitor module at high temperature. The actual life of the super capacitor module at the T temperature is as follows:
wherein T ismaxThe highest temperature of the super capacitor module, beyond which the super capacitor module is damaged or cannot be used. Operating at T temperature for a first operating time TrAnd the second attenuation life of the super capacitor module is as follows:
in the embodiment, a method for monitoring and early warning a super capacitor module is provided, which includes acquiring voltage information, current information, temperature information and internal resistance information of the super capacitor module during working; predicting the attenuation life of the super capacitor module through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the attenuation life of the module; and determining the residual service life of the super capacitor module according to the attenuation service life of the module. According to the embodiment, the attenuation life of the super capacitor module is predicted through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information, the attenuation life of the module is obtained, the remaining life of the module of the super capacitor module is further obtained, early warning is carried out when the remaining life of the module does not meet preset conditions, and therefore the purpose of monitoring and early warning the service life of the super capacitor module is achieved.
Referring to fig. 4, fig. 4 is a schematic flow chart of a monitoring and early warning method for a super capacitor module according to a third embodiment of the present invention, and the third embodiment of the monitoring and early warning method for a super capacitor module according to the present invention is provided based on the first embodiment shown in fig. 2.
In the third embodiment, after the step S30, the method further includes:
step S40: and acquiring the capacity attenuation change rate, the temperature change rate and the internal resistance change rate of the super capacitor module in real time and the assembly unbalance of the super capacitor membrane groups which are connected in series.
The capacity fade rate is a value of a change in the capacity of the supercapacitor module per unit time. The temperature change rate refers to the temperature change degree in the super capacitor module during normal operation. The internal resistance change rate refers to the change degree of the internal resistance of the super capacitor module in unit time. The general imbalance degree refers to the difference of the capacity change between the super capacitor modules in the super capacitor modules connected in series, for example, the capacity of one super capacitor module in the super capacitor modules connected in series is reduced by ten percent, while the capacities of other super capacitor modules are reduced by only one percent, and at this time, the overall imbalance degree of the super capacitor modules is higher; when the capacity of all the super capacitor modules in the super capacitor modules connected in series is reduced by one percent or two percent, the imbalance degree of the assembly of the super capacitor modules is lower. The assembly unbalance degree of the super capacitor module is larger than or equal to one, and when the assembly unbalance degree of the super capacitor module is equal to one, the capacities of all the super capacitor modules in the super capacitor modules which are connected in series at the moment are the same.
In specific implementation, the super capacitor module monitoring and early warning equipment can determine the current capacitance of the super capacitor module according to the voltage information, the current information and the charging and discharging time information of the super capacitor module, obtain the capacity change attenuation degree of the super capacitor module within a period of time by comparing the current capacitance with the capacitance at the previous acquisition moment, and then determine the capacity attenuation change rate according to the ratio of the capacity change attenuation degree to the period of time. The temperature change rate can be determined according to the temperature information at the adjacent moment by acquiring the temperature information at regular time. Of course, the internal resistance change rate and the imbalance of the assembly of the super capacitor modules connected in series can also be obtained according to the capacity change rate obtaining manner, and details are not repeated here.
Step S50: and generating safety early warning information when at least one of the capacity fading rate, the temperature rate, the internal resistance rate or the assembly unbalance degree does not meet a preset condition.
It should be noted that the capacity attenuation change rate, the temperature change rate, the internal resistance change rate and the assembly unbalance of the supercapacitor membrane groups connected in series with each other in the supercapacitor module can gradually increase in a certain range, if any one or more of the capacity attenuation change rate, the internal resistance change rate and the assembly unbalance of the supercapacitor membrane groups connected in series with each other in unit time far exceed the range of preset conditions, the damaged supercapacitor module or the damaged supercapacitor module in the series-connected supercapacitor module can be defaulted at the moment, and at the moment, safety warning is required to be performed to prevent accidents.
In specific implementation, the supercapacitor membrane module monitoring device may compare the capacity attenuation change rate, the temperature change rate, the internal resistance change rate, or the assembly unbalance of the supercapacitor module with the capacity attenuation change rate, the internal resistance change rate, or the assembly unbalance of the preset condition, and generate the safety warning information to alarm when at least one of the monitored capacity attenuation change rate, the monitored temperature change rate, the monitored internal resistance change rate, or the monitored assembly unbalance does not meet the capacity attenuation change rate, the monitored internal resistance change rate, or the monitored assembly unbalance range set in the preset condition.
In this embodiment, the capacity fading rate of the super capacitor module further includes the capacity fading change of a single capacitor inside the super capacitor module, and an alarm is given when the fading of the single capacitor exceeds a preset condition.
It should be understood that, the super capacitor module is formed by connecting a plurality of single super capacitors in series, and in an initial state, the capacity and the internal resistance of the super capacitor module have a certain difference, so that in the series charging process, the time for the single voltage to rise to the nominal voltage also has a difference, the larger the capacity of the capacitor is, the longer the time required for full charging is, the smaller the capacity is, the shorter the time required for full charging is, and the discharging process is similar, and when the discharging is stopped, the larger the capacity is, the higher the voltage is, the smaller the capacity is, and the lower the voltage is. At the moment, the capacitance between the single capacitors in the super capacitor module or the voltage after discharging has a certain arrangement sequence. After a plurality of using cycles, under the condition that the capacity is unchanged or the capacity is attenuated in equal proportion, the sequencing of the capacitors charged to the rated voltage is kept unchanged, and otherwise, the sequencing of the amplitude values of the residual voltages of the capacitors after discharging is also fixed and unchanged. In practical use, however, the attenuation amplitude of the single capacitors in the same module is different, and the attenuation change condition of the single capacitors in the super capacitor module can be known according to the change of the charging sequence and the change of the arrangement sequence of the residual voltages after discharging.
In specific implementation, the charging time difference and the discharging voltage difference of each time can be counted, and according to the counted result, the attenuation ratio of the monomer in the whole super capacitor module and the rate of change of the attenuation ratio are calculated and obtained, and an attenuation rate curve is generated. Comparing the decay rate of each single capacitor in the rate curve, the capacitor with larger decay rate or abnormal detail compared with the average data can be checked, and a warning is given out. Certainly, under the condition that a plurality of super capacitor modules are cooperatively used, the attenuation rate change condition of a single super capacitor module can also be determined in this way, and the specific way is not described again.
In the embodiment, a method for monitoring and early warning a super capacitor module is provided, which includes acquiring voltage information, current information, temperature information and internal resistance information of the super capacitor module during working; predicting the attenuation life of the super capacitor module through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the attenuation life of the module; and determining the residual service life of the super capacitor module according to the attenuation service life of the module. According to the embodiment, the attenuation life of the super capacitor module is predicted through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information, the attenuation life of the module is obtained, the remaining life of the super capacitor module is obtained, early warning is carried out when the remaining life of the module does not meet preset conditions, and therefore the purpose that the service life of the super capacitor module is monitored and safety early warning is timely carried out when the super capacitor module is abnormal is achieved.
In addition, an embodiment of the present invention further provides a storage medium, where the storage medium stores a monitoring and early warning program for a super capacitor module, and the monitoring and early warning program for the super capacitor module is executed by a processor to implement the steps of the monitoring and early warning method for the super capacitor module.
In addition, referring to fig. 5, an embodiment of the present invention further provides a monitoring and early warning device for a super capacitor module, where the monitoring and early warning device for a super capacitor module includes: the system comprises an information acquisition module 10, an attenuation life prediction module 20, a residual life determination module 30 and a safety monitoring module 40;
the information acquisition module 10 is configured to acquire voltage information, current information, temperature information, and internal resistance information of the supercapacitor module during operation;
the attenuation life prediction module 20 is configured to predict the attenuation life of the super capacitor module through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information, so as to obtain a module attenuation life;
the remaining life determining module 30 is configured to determine a remaining life of the module of the super capacitor module according to the attenuation life of the module, and generate safety warning information for warning when the remaining life of the module does not meet a preset condition.
In the embodiment, a monitoring and early warning device for a super capacitor module is provided, and the device acquires voltage information, current information, temperature information and internal resistance information of the super capacitor module during working through an information acquisition module 10; the attenuation life prediction module 20 predicts the attenuation life of the super capacitor module through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the module attenuation life; the remaining life determining module 30 determines the remaining life of the super capacitor module according to the decay life of the module. According to the embodiment, the attenuation life of the super capacitor module is predicted through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information, the attenuation life of the module is obtained, the remaining life of the module of the super capacitor module is further obtained, early warning is carried out when the remaining life of the module does not meet preset conditions, and therefore the purpose of monitoring and early warning the service life of the super capacitor module is achieved.
In an embodiment, the decay life prediction module 20 is further configured to predict the decay life of the super capacitor module according to the voltage information and the current information by presetting a first super capacitor life curve, so as to obtain a first decay life; predicting the attenuation life of the super capacitor module by presetting a second super capacitor life curve according to the temperature information to obtain a second attenuation life; predicting the attenuation life of the super capacitor module by presetting a third super capacitor life curve according to the internal resistance information to obtain a third attenuation life; and determining the module decay life of the super capacitor module according to the first decay life, the second decay life and the third decay life.
In an embodiment, the decay life prediction module 20 is further configured to determine charge and discharge frequency information of the super capacitor module according to the internal resistance information; and predicting the attenuation life of the super capacitor module by presetting a third super capacitor life curve according to the charging and discharging times information to obtain a third attenuation life.
In an embodiment, the decay life prediction module 20 is further configured to obtain voltage sample information, current sample information, and first decay life sample information, and establish a preset first super capacitor life curve according to the voltage sample information, the current sample information, and the first decay life sample information; acquiring temperature sample information and second attenuation life sample information, and establishing a preset second super capacitor life curve according to the temperature sample information and the second attenuation life sample information; acquiring charge and discharge frequency sample information and third attenuation life sample information, and establishing a preset third super capacitor life curve according to the charge and discharge frequency sample information and the third attenuation life sample information.
In an embodiment, the decay life prediction module 20 is further configured to obtain a first working time of the super capacitor module in the states of the voltage information and the current information; and predicting the attenuation life of the super capacitor module by presetting a first super capacitor life curve according to the voltage information, the current information and the first working time to obtain a first attenuation life.
In an embodiment, the decay life prediction module 20 is further configured to obtain a second working time of the super capacitor module under the temperature information; and predicting the attenuation life of the super capacitor module by presetting a second super capacitor life curve according to the temperature information and the second working time to obtain a second attenuation life.
In an embodiment, the safety monitoring module 40 is further configured to obtain a capacity attenuation change rate, a temperature change rate, an internal resistance change rate of the super capacitor module in real time, and an assembly unbalance of the super capacitor module groups connected in series with each other; and generating safety early warning information when at least one of the capacity fading rate, the temperature rate, the internal resistance rate or the assembly unbalance degree does not meet a preset condition.
Other embodiments or specific implementation manners of the monitoring and early warning device for the super capacitor module can refer to the above method embodiments, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order, but rather the words first, second, third, etc. are to be interpreted as names.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g., a Read Only Memory (ROM)/Random Access Memory (RAM), a magnetic disk, an optical disk), and includes several instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
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 super capacitor module monitoring and early warning method is characterized by comprising the following steps:
acquiring voltage information, current information, temperature information and internal resistance information of the super capacitor module during working;
predicting the attenuation life of the super capacitor module through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the attenuation life of the module;
and determining the residual service life of the module of the super capacitor module according to the attenuation service life of the module, and generating safety early warning information for early warning when the residual service life of the module does not meet preset conditions.
2. The method of claim 1, wherein the step of predicting the decay life of the supercapacitor module by a preset supercapacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the module decay life comprises:
predicting the attenuation life of the super capacitor module by presetting a first super capacitor life curve according to the voltage information and the current information to obtain a first attenuation life;
predicting the attenuation life of the super capacitor module by presetting a second super capacitor life curve according to the temperature information to obtain a second attenuation life;
predicting the attenuation life of the super capacitor module by presetting a third super capacitor life curve according to the internal resistance information to obtain a third attenuation life;
and determining the module decay life of the super capacitor module according to the first decay life, the second decay life and the third decay life.
3. The method of claim 2, wherein the step of predicting the attenuation life of the supercapacitor module by presetting a third supercapacitor life curve according to the internal resistance information comprises the steps of:
determining the charging and discharging frequency information of the super capacitor module according to the internal resistance information;
and predicting the attenuation life of the super capacitor module by presetting a third super capacitor life curve according to the charging and discharging times information to obtain a third attenuation life.
4. The method of claim 3, wherein the step of predicting the decay life of the supercapacitor module by presetting a first supercapacitor life curve according to the voltage information and the current information and obtaining a first decay life further comprises the steps of:
acquiring voltage sample information, current sample information and first attenuation life sample information, and establishing a preset first super capacitor life curve according to the voltage sample information, the current sample information and the first attenuation life sample information;
acquiring temperature sample information and second attenuation life sample information, and establishing a preset second super capacitor life curve according to the temperature sample information and the second attenuation life sample information;
acquiring charge and discharge frequency sample information and third attenuation life sample information, and establishing a preset third super capacitor life curve according to the charge and discharge frequency sample information and the third attenuation life sample information.
5. The method of claim 4, wherein the step of predicting the decay life of the supercapacitor module by presetting a first supercapacitor life curve according to the voltage information and the current information comprises the steps of:
acquiring first working time of the super capacitor module in the states of the voltage information and the current information;
and predicting the attenuation life of the super capacitor module by presetting a first super capacitor life curve according to the voltage information, the current information and the first working time to obtain a first attenuation life.
6. The method of claim 5, wherein the step of predicting the decay life of the supercapacitor module according to the temperature information by presetting a second supercapacitor life curve comprises the steps of:
acquiring second working time of the super capacitor module under the temperature information;
and predicting the attenuation life of the super capacitor module by presetting a second super capacitor life curve according to the temperature information and the second working time to obtain a second attenuation life.
7. The method of claim 1, wherein after the step of determining the remaining life of the super capacitor module according to the attenuation life of the module and generating safety warning information for warning when the remaining life of the module does not satisfy a preset condition, the method further comprises:
acquiring the capacity attenuation change rate, the temperature change rate and the internal resistance change rate of the super capacitor module in real time and the assembly unbalance of the super capacitor membrane groups which are connected in series;
and when at least one of the capacity fading rate, the temperature change rate, the internal resistance change rate or the assembly unbalance degree does not meet the preset condition, generating the safety early warning information for early warning.
8. The utility model provides a super capacitor module control, early warning device which characterized in that, super capacitor module control, early warning device include: the monitoring and early warning method comprises a memory, a processor and a super capacitor module monitoring and early warning program which is stored on the memory and can run on the processor, wherein when the super capacitor module monitoring and early warning program is executed by the processor, the steps of the monitoring and early warning method for the super capacitor module as claimed in any one of claims 1 to 7 are realized.
9. A storage medium, wherein the storage medium stores a super capacitor module monitoring and early warning program, and the super capacitor module monitoring and early warning program, when executed by a processor, implements the steps of the super capacitor module monitoring and early warning method according to any one of claims 1 to 7.
10. The utility model provides a super capacitor module control, early warning device which characterized in that, super capacitor module control, early warning device include: the device comprises an information acquisition module, an attenuation life prediction module and a residual life determination module;
the information acquisition module is used for acquiring voltage information, current information, temperature information and internal resistance information of the super capacitor module during working;
the attenuation life prediction module is used for predicting the attenuation life of the super capacitor module through a preset super capacitor life curve according to the voltage information, the current information, the temperature information and the internal resistance information to obtain the attenuation life of the module;
the residual life determining module is used for determining the residual life of the module of the super capacitor module according to the attenuation life of the module, and generating safety early warning information for early warning when the residual life of the module does not meet preset conditions.
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