CN112910033A - Method, system, equipment and storage medium for monitoring residual electric energy of train storage battery - Google Patents
Method, system, equipment and storage medium for monitoring residual electric energy of train storage battery Download PDFInfo
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/371—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with remote indication, e.g. on external chargers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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Abstract
The application discloses a method for monitoring residual electric energy of a train storage battery, comprising the following steps of: determining the percentage of the initial electric quantity of the storage battery in the rated electric quantity of the storage battery at the initial moment after the train is started as the obtained initial capacity; from the initial moment, determining the percentage of the change electric quantity of the storage battery in the rated electric quantity of the storage battery by continuously monitoring the current value of the storage battery and integrating according to time, and taking the percentage as the obtained continuously updated capacity change quantity; and in the running process of the train, superposing the initial capacity and the current capacity variation, and taking the obtained result as the percentage of the residual electric quantity of the storage battery monitored currently in the rated electric quantity of the storage battery. By the scheme, the accuracy of monitoring the residual electric energy of the train storage battery is improved on the premise of not increasing the cost. The application also provides a monitoring system, equipment and storage medium for the residual electric energy of the train storage battery, and the monitoring system, the equipment and the storage medium have corresponding technical effects.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a method, a system, equipment and a storage medium for monitoring the residual electric energy of a train storage battery.
Background
The function of the train auxiliary storage battery is to activate and start the train to provide electric energy for the vehicle, provide emergency power supply for the train when there is no high-voltage power supply, and the train auxiliary power supply device is important on the train, therefore, the residual capacity of the storage battery is significant for the application of the storage battery, and the driver can see the monitored residual capacity of the storage battery, and can timely make corresponding treatment measures under the condition of low electric quantity of the storage battery, such as timely starting the charging of the storage battery, thereby avoiding the influence of the storage battery feed on the driving safety under the emergency condition, and avoiding the influence of the storage battery over-discharge on the.
The unit of the electric quantity of the storage battery is ampere hour (Ah), and the residual electric quantity value of the storage battery cannot be directly measured through vehicle-mounted measuring equipment. Because the voltage, the current and the temperature of the storage battery have certain nonlinear relations with the residual capacity of the storage battery, the currently used storage battery capacity monitoring mode is to deduce the residual capacity of the storage battery by measuring the voltage, the current and the temperature of the storage battery.
There are two common methods for measuring the remaining capacity of the storage battery. One is to search the residual electric quantity value of the storage battery under the condition through measuring voltage, current and temperature values and through a storage battery test curve. The method is simple and easy to operate, but the precision is not high, and particularly in practical application, in the process of charging and discharging the storage battery, the voltage and the current values are suddenly changed due to load change, so that the residual electric quantity value of the storage battery monitored by the method is also jumped. The method is characterized in that a vehicle-mounted storage battery on-line monitoring system is additionally arranged independently, corresponding parameters of the storage battery are measured through a series of sensors such as voltage, current and temperature in the monitoring system, and the residual electric quantity of the storage battery is calculated through derivation according to a certain algorithm.
In summary, how to improve the accuracy of monitoring the remaining battery capacity on the basis of not additionally installing a set of on-line monitoring system for the vehicle-mounted storage battery is a technical problem which needs to be solved urgently by technical personnel in the field at present.
Disclosure of Invention
The invention aims to provide a method, a system, equipment and a storage medium for monitoring the residual electric energy of a train storage battery, so as to improve the accuracy of monitoring the residual electric energy of the storage battery on the basis of not additionally installing a set of vehicle-mounted storage battery on-line monitoring system.
In order to solve the technical problems, the invention provides the following technical scheme:
a method for monitoring residual electric energy of a train storage battery comprises the following steps:
determining the percentage of the initial electric quantity of the storage battery in the rated electric quantity of the storage battery at the initial moment after the train is started as the obtained initial capacity;
from the initial moment, determining the percentage of the change electric quantity of the storage battery in the rated electric quantity of the storage battery by continuously monitoring the current value of the storage battery and integrating according to time, and taking the percentage as the obtained continuously updated capacity change quantity;
and in the running process of the train, overlapping the initial capacity and the current capacity variation, and taking the obtained result as the percentage of the residual electric quantity of the storage battery monitored currently in the rated electric quantity of the storage battery.
Preferably, the determining, at the initial time after the train is started, a percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity includes:
taking the time x seconds after the train is started as an initial time, and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity; x is a positive integer.
Preferably, x has a value of 2.
Preferably, the determining, at the initial time after the train is started, a percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity includes:
at an initial moment after a train is started, determining a corresponding discharge curve from a preset database according to the detected temperature of the storage battery at the initial moment and the detected current value of the storage battery at the initial moment;
and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity based on the determined discharge curve and the detected voltage value of the storage battery at the initial moment.
Preferably, the temperature of the battery at the initial time, the current value of the battery at the initial time, and the voltage value of the battery at the initial time are detected by a train assistance control unit.
Preferably, after the result obtained by superimposing the initial capacity and the current capacity variation is used as the percentage of the currently monitored remaining capacity of the storage battery to the rated capacity of the storage battery, the method further includes:
and displaying the percentage of the residual electric quantity of the currently monitored storage battery in the rated electric quantity of the storage battery through a human-computer interaction interface of the train.
Preferably, the method further comprises the following steps:
judging whether the percentage of the residual electric quantity of the storage battery in the rated electric quantity of the storage battery monitored currently is lower than a preset alarm threshold value or not;
if yes, outputting first alarm prompt information.
A train battery residual energy monitoring system comprises:
the initial capacity determining unit is used for determining the percentage of the initial electric quantity of the storage battery in the rated electric quantity of the storage battery at the initial moment after the train is started as the obtained initial capacity;
a capacity variation determining unit, configured to determine, from the initial time, a percentage of a variation electric quantity of the storage battery in a rated electric quantity of the storage battery as an obtained continuously updated capacity variation by continuously monitoring a current value of the storage battery and integrating according to time;
and the storage battery residual electric energy monitoring unit is used for superposing the initial capacity and the current capacity variation in the running process of the train, and the obtained result is used as the percentage of the currently monitored storage battery residual electric energy in the rated electric quantity of the storage battery.
Preferably, the initial capacity determining unit is specifically configured to:
taking the time x seconds after the train is started as an initial time, and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity; x is a positive integer.
Preferably, the initial capacity determining unit is specifically configured to:
at an initial moment after a train is started, determining a corresponding discharge curve from a preset database according to the detected temperature of the storage battery at the initial moment and the detected current value of the storage battery at the initial moment;
and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity based on the determined discharge curve and the detected voltage value of the storage battery at the initial moment.
The temperature of the storage battery at the initial moment, the current value of the storage battery at the initial moment and the voltage value of the storage battery at the initial moment are all detected by the train auxiliary control unit.
Preferably, the method further comprises the following steps:
and the first output unit is used for displaying the percentage of the residual electric quantity of the currently monitored storage battery in the rated electric quantity of the storage battery through a human-computer interaction interface of the train.
Preferably, the method further comprises the following steps:
the first output unit is used for judging whether the percentage of the residual electric quantity of the storage battery monitored currently in the rated electric quantity of the storage battery is lower than a preset alarm threshold value or not; if yes, outputting first alarm prompt information.
A train battery residual energy monitoring device comprises:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the method for monitoring the remaining electric energy of the train battery.
A computer readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the method for monitoring remaining battery power of a train battery as claimed in any one of the preceding claims.
By applying the technical scheme provided by the embodiment of the invention, firstly, at the initial time after the train is started, the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery is determined as the obtained initial capacity, and after the initial capacity is obtained, the percentage of the changed electric quantity of the storage battery to the rated electric quantity of the storage battery is determined as the obtained continuously updated capacity variable quantity by continuously monitoring the current value of the storage battery and integrating according to time from the initial time. In the running process of the train, the initial capacity and the current capacity variation are superposed, and the obtained result can be used as the percentage of the residual electric quantity of the currently monitored storage battery in the rated electric quantity of the storage battery, namely, a driver can know the current residual electric quantity condition of the storage battery. The scheme of the application can be realized by using the existing equipment without additionally installing a set of vehicle-mounted storage battery on-line monitoring system, so that the implementation cost of the scheme is also guaranteed. To sum up, the scheme of this application has improved the accuracy of train battery residual electric energy monitoring under the prerequisite that does not increase the cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of an embodiment of a method for monitoring the residual electric energy of a train storage battery in the invention;
FIG. 2 is a schematic diagram of different discharge curves of a specific type of battery at different discharge currents at 20 ℃;
fig. 3 is a schematic structural diagram of a train storage battery residual electric energy monitoring system in the invention.
Detailed Description
The core of the invention is to provide a method for monitoring the residual electric energy of the train storage battery, which improves the accuracy of monitoring the residual electric energy of the train storage battery on the premise of not increasing the cost.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating an implementation of a method for monitoring the residual electric energy of a train battery according to the present invention, where the method for monitoring the residual electric energy of the train battery may include the following steps:
step S101: and at the initial moment after the train is started, determining the percentage of the initial electric quantity of the storage battery in the rated electric quantity of the storage battery as the obtained initial capacity.
In practical application, the time of the power-on start of the train can be used as the initial time after the train starts.
Further, in an embodiment of the present invention, it is considered that the voltage and the current of the battery detected at the time of the train power-on start may be unstable, which results in an excessive error of the obtained initial capacity, and therefore, the time after a short delay of the train power-on start may be used as the initial time. That is, in an embodiment of the present invention, step S101 may specifically be:
taking the time x seconds after the train is started as an initial time, and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity; x is a positive integer.
x is a positive integer, specific numerical values can be set and adjusted according to actual needs, the setting is usually not too large, and the detected voltage and current of the storage battery are stable after the train is electrified and started for x seconds. For example, in one particular case, the value of x is set to 2 based on theoretical analysis and in conjunction with actual data. In the following description, x is 2 as an example.
After the train is powered on and started for 2 seconds, the initial time is used, and the percentage of the initial electric quantity of the storage battery in the rated electric quantity of the storage battery can be determined and used as the obtained initial capacity.
The rated charge of the battery is a known parameter, and the initial charge of the battery can be determined by a detection value. The determination may be generally made based on the detected temperature of the battery at the initial time, the current value of the battery at the initial time, and the voltage value of the battery at the initial time.
That is, in an embodiment of the present invention, step S101 may specifically include the following two steps:
the method comprises the following steps: at the initial moment after the train is started, determining a corresponding discharge curve from a preset database according to the detected temperature of the storage battery at the initial moment and the detected current value of the storage battery at the initial moment;
step two: and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity based on the determined discharge curve and the detected voltage value of the storage battery at the initial moment.
For a specific type of battery, the remaining amount of electricity of the battery is related to the discharge voltage, current and current temperature of the battery, and can be provided by the battery manufacturer. For example, fig. 2 shows different discharge curves for different discharge currents at 20 ℃ for a particular type of battery. Of course, in fig. 2, only 6 discharge curves are drawn at 20 ℃, which correspond to 6 kinds of discharge currents, respectively, in other embodiments, there may be a greater number of discharge curves, and it is understood that the finer the discharge current division is, the more accurate the initial charge of the storage battery is determined accordingly, and of course, the more data amount needs to be stored in the database. Similarly, only different discharge curves at 20 ℃ are shown in fig. 2, and different discharge curves at other temperatures also need to be stored in the database, and it can be understood that the finer the temperature division, the more accurate the initial charge of the battery can be determined.
The vertical axis of fig. 2 represents the voltage of the battery, and the horizontal axis represents the percentage of the discharged capacity of the battery to the rated capacity of the battery, and is, for example, 0.2C5、0.5C5，1.0C5The equal values indicate different discharge current values.
It can be seen that the temperature of the storage battery at the initial moment and the current value of the storage battery at the initial moment are detected, so that a corresponding discharge curve can be determined, the discharge curve and the voltage value of the storage battery at the initial moment are utilized, so that the percentage of the electric quantity discharged by the storage battery at the initial moment to the rated electric quantity of the storage battery can be determined, and the percentage is subtracted from 1, so that the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery is obtained. For convenience of description, the percentage of the initial capacity of the storage battery to the rated capacity of the storage battery at the initial moment is referred to as initial capacity, and is denoted by C0。
In one embodiment of the present invention, the battery temperature at the initial time, the current value of the battery at the initial time, and the voltage value of the battery at the initial time are detected by the train assist control unit.
In this embodiment, considering that the charging motors of the existing vehicle-mounted storage battery have the functions of monitoring the real-time temperature, voltage and current of the storage battery and feed back the real-time temperature, voltage and current to the train auxiliary control unit, for example, the current value of the storage battery can be monitored by the current sensor in real time, the voltage value of the storage battery can be monitored by the voltage sensor in real time, and the temperature value of the storage battery can be monitored by the temperature sensor in the storage battery and fed back to the train auxiliary control unit in real time. Therefore, in the embodiment of the application, the temperature of the storage battery at the initial moment, the current value of the storage battery at the initial moment and the voltage value of the storage battery at the initial moment are detected by the train auxiliary control unit, so that the scheme of the application does not need to be additionally provided with a monitoring device, namely, the scheme of the application can be implemented on the basis of original train equipment, and the cost is low.
Step S102: and determining the percentage of the change electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained continuously updated capacity change quantity by continuously monitoring the current value of the storage battery and integrating according to time from the initial moment.
From the initial moment, it is necessary to continuously monitor the current value of the battery and perform integration according to time to obtain the change electric quantity of the battery, which can be expressed by formula
The value of I in the formula is the current value of the storage battery which is continuously monitored, and in practical application, the current value can be monitored in real time or according to a preset period. t represents time, and the time when t is 0 is the initial time.
The percentage of the change electric quantity of the storage battery to the rated electric quantity of the storage battery can be expressed by formula
C in the formula5The rated electric quantity of the storage battery is shown, and the delta C is the percentage of the obtained changed electric quantity of the storage battery to the rated electric quantity of the storage battery, and is called as capacity variation in the application. It will be appreciated that since the value of the current I of the battery being monitored is constantly changing and constantly extending, Δ C is also constantly being monitoredThe value of the change, i.e. what the present application gets, is the capacity change amount which is continuously updated.
The current value I of the battery needs to be specified in a positive direction, and is usually specified in a positive direction during charging and a negative direction during discharging. In practical application, after the train reaches the end point and the operation is finished, the power supply circuit of the storage battery can be disconnected, and the updating of the percentage of the residual capacity of the storage battery to the rated capacity of the storage battery can be stopped.
Step S103: and in the running process of the train, superposing the initial capacity and the current capacity variation, and taking the obtained result as the percentage of the residual electric quantity of the storage battery monitored currently in the rated electric quantity of the storage battery.
The percentage of the monitored remaining battery capacity to the rated battery capacity can be represented by C, and the calculation formula of C can be represented as follows:
the monitored percentage C of the residual electric quantity of the storage battery to the rated electric quantity of the storage battery needs to be displayed to workers, and in practical application, the currently monitored percentage C of the residual electric quantity of the storage battery to the rated electric quantity of the storage battery can be displayed through a human-computer interaction interface of a train. The human-computer interaction interface of the train can be an original human-computer interaction interface HMI of the train, so that an additional display device is not required to be added in the scheme of the application.
Further, in an embodiment of the present invention, in consideration that a worker may not notice the situation in time when the remaining capacity of the battery is low, the method may further include:
judging whether the percentage of the residual electric quantity of the storage battery in the rated electric quantity of the storage battery monitored currently is lower than a preset alarm threshold value or not; if the first warning prompt message is output, the first warning prompt message can be a sound-based first warning prompt message generally, or a relatively obvious first warning prompt message realized in a flashing mode and the like, so that a worker can notice the condition that the residual electric quantity of the storage battery is relatively low in time.
By applying the technical scheme provided by the embodiment of the invention, firstly, at the initial time after the train is started, the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery is determined as the obtained initial capacity, and after the initial capacity is obtained, the percentage of the changed electric quantity of the storage battery to the rated electric quantity of the storage battery is determined as the obtained continuously updated capacity variable quantity by continuously monitoring the current value of the storage battery and integrating according to time from the initial time. In the running process of the train, the initial capacity and the current capacity variation are superposed, and the obtained result can be used as the percentage of the residual electric quantity of the currently monitored storage battery in the rated electric quantity of the storage battery, namely, a driver can know the current residual electric quantity condition of the storage battery. The scheme of the application can be realized by using the existing equipment without additionally installing a set of vehicle-mounted storage battery on-line monitoring system, so that the implementation cost of the scheme is also guaranteed. To sum up, the scheme of this application has improved the accuracy of train battery residual electric energy monitoring under the prerequisite that does not increase the cost.
Corresponding to the above method embodiment, the embodiment of the invention also provides a system for monitoring the residual electric energy of the train storage battery, which can be correspondingly referred to with the above.
Referring to fig. 3, a schematic structural diagram of a system for monitoring the residual electric energy of a train battery in the present invention includes:
an initial capacity determining unit 301, configured to determine, at an initial time after a train is started, a percentage of an initial electric quantity of a storage battery to a rated electric quantity of the storage battery as an obtained initial capacity;
a capacity variation determining unit 302, configured to determine, from an initial time, a percentage of a battery variation electric quantity to a battery rated electric quantity as a resulting continuously updated capacity variation quantity by continuously monitoring a current value of the battery and integrating according to time;
and the storage battery residual electric energy monitoring unit 303 is configured to superimpose the initial capacity and the current capacity variation during the operation of the train, and an obtained result is used as a percentage of the currently monitored storage battery residual electric energy in the rated electric quantity of the storage battery.
In an embodiment of the present invention, the initial capacity determining unit 301 is specifically configured to:
taking the time x seconds after the train is started as an initial time, and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity; x is a positive integer.
In the present invention, the initial capacity determining unit 301 is specifically configured to:
at the initial moment after the train is started, determining a corresponding discharge curve from a preset database according to the detected temperature of the storage battery at the initial moment and the detected current value of the storage battery at the initial moment;
and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity based on the determined discharge curve and the detected voltage value of the storage battery at the initial moment.
In one embodiment of the present invention, the battery temperature at the initial time, the current value of the battery at the initial time, and the voltage value of the battery at the initial time are detected by the train assist control unit.
In one embodiment of the present invention, the method further comprises:
and the first output unit is used for displaying the percentage of the residual electric quantity of the currently monitored storage battery in the rated electric quantity of the storage battery through a human-computer interaction interface of the train.
In one embodiment of the present invention, the method further comprises:
the first output unit is used for judging whether the percentage of the residual electric quantity of the storage battery monitored currently in the rated electric quantity of the storage battery is lower than a preset alarm threshold value or not; if yes, outputting first alarm prompt information.
Corresponding to the above method and system embodiments, the embodiment of the present invention further provides a device for monitoring train battery residual electric energy and a computer readable storage medium, where the computer readable storage medium stores a computer program, and the computer program, when executed by the processor, implements the steps of the method for monitoring train battery residual electric energy in any of the above embodiments, and may be referred to in correspondence with the above. A computer-readable storage medium as referred to herein may include Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The monitoring equipment for the residual electric energy of the train storage battery can comprise:
a memory for storing a computer program;
and the processor is used for executing a computer program to realize the steps of the method for monitoring the residual electric energy of the train storage battery in any embodiment.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The principle and the implementation of the present invention are explained in the present application by using specific examples, and the above description of the embodiments is only used to help understanding the technical solution and the core idea of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (15)
1. The method for monitoring the residual electric energy of the train storage battery is characterized by comprising the following steps:
determining the percentage of the initial electric quantity of the storage battery in the rated electric quantity of the storage battery at the initial moment after the train is started as the obtained initial capacity;
from the initial moment, determining the percentage of the change electric quantity of the storage battery in the rated electric quantity of the storage battery by continuously monitoring the current value of the storage battery and integrating according to time, and taking the percentage as the obtained continuously updated capacity change quantity;
and in the running process of the train, overlapping the initial capacity and the current capacity variation, and taking the obtained result as the percentage of the residual electric quantity of the storage battery monitored currently in the rated electric quantity of the storage battery.
2. The method for monitoring the residual electric energy of the storage batteries of the train as claimed in claim 1, wherein the step of determining the percentage of the initial electric quantity of the storage batteries to the rated electric quantity of the storage batteries at the initial time after the train is started as the obtained initial capacity comprises the following steps:
taking the time x seconds after the train is started as an initial time, and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity; x is a positive integer.
3. The method for monitoring the residual electric energy of the train storage battery according to claim 2, wherein the value of x is 2.
4. The method for monitoring the residual electric energy of the storage batteries of the train as claimed in claim 1, wherein the step of determining the percentage of the initial electric quantity of the storage batteries to the rated electric quantity of the storage batteries at the initial time after the train is started as the obtained initial capacity comprises the following steps:
at an initial moment after a train is started, determining a corresponding discharge curve from a preset database according to the detected temperature of the storage battery at the initial moment and the detected current value of the storage battery at the initial moment;
and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity based on the determined discharge curve and the detected voltage value of the storage battery at the initial moment.
5. The method for monitoring the residual electric energy of the train storage battery according to claim 4, wherein the temperature of the storage battery at the initial moment, the current value of the storage battery at the initial moment and the voltage value of the storage battery at the initial moment are all detected by a train auxiliary control unit.
6. The method for monitoring the residual electric energy of the train storage battery according to claim 1, wherein after the initial capacity and the current capacity variation are superimposed to obtain a result as the percentage of the currently monitored residual electric energy of the storage battery to the rated electric energy of the storage battery, the method further comprises the following steps:
and displaying the percentage of the residual electric quantity of the currently monitored storage battery in the rated electric quantity of the storage battery through a human-computer interaction interface of the train.
7. The method for monitoring the residual electric energy of the train storage battery according to claim 1, further comprising the following steps:
judging whether the percentage of the residual electric quantity of the storage battery in the rated electric quantity of the storage battery monitored currently is lower than a preset alarm threshold value or not;
if yes, outputting first alarm prompt information.
8. The utility model provides a train battery residual electric energy's monitoring system which characterized in that includes:
the initial capacity determining unit is used for determining the percentage of the initial electric quantity of the storage battery in the rated electric quantity of the storage battery at the initial moment after the train is started as the obtained initial capacity;
a capacity variation determining unit, configured to determine, from the initial time, a percentage of a variation electric quantity of the storage battery in a rated electric quantity of the storage battery as an obtained continuously updated capacity variation by continuously monitoring a current value of the storage battery and integrating according to time;
and the storage battery residual electric energy monitoring unit is used for superposing the initial capacity and the current capacity variation in the running process of the train, and the obtained result is used as the percentage of the currently monitored storage battery residual electric energy in the rated electric quantity of the storage battery.
9. The system for monitoring the remaining electric energy of the train storage battery according to claim 8, wherein the initial capacity determining unit is specifically configured to:
taking the time x seconds after the train is started as an initial time, and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity; x is a positive integer.
10. The system for monitoring the remaining electric energy of the train storage battery according to claim 8, wherein the initial capacity determining unit is specifically configured to:
at an initial moment after a train is started, determining a corresponding discharge curve from a preset database according to the detected temperature of the storage battery at the initial moment and the detected current value of the storage battery at the initial moment;
and determining the percentage of the initial electric quantity of the storage battery to the rated electric quantity of the storage battery as the obtained initial capacity based on the determined discharge curve and the detected voltage value of the storage battery at the initial moment.
11. The system for monitoring the residual electric energy of the batteries of the train as claimed in claim 10, wherein the temperature of the batteries at the initial moment, the current value of the batteries at the initial moment and the voltage value of the batteries at the initial moment are all detected by a train auxiliary control unit.
12. The train storage battery residual electric energy monitoring system according to claim 8, characterized by further comprising:
and the first output unit is used for displaying the percentage of the residual electric quantity of the currently monitored storage battery in the rated electric quantity of the storage battery through a human-computer interaction interface of the train.
13. The train storage battery residual electric energy monitoring system according to claim 8, characterized by further comprising:
the first output unit is used for judging whether the percentage of the residual electric quantity of the storage battery monitored currently in the rated electric quantity of the storage battery is lower than a preset alarm threshold value or not; if yes, outputting first alarm prompt information.
14. The utility model provides a monitoring facilities of train battery residual energy which characterized in that includes:
a memory for storing a computer program;
a processor for executing said computer program to carry out the steps of the method for monitoring remaining electric energy of a battery of a train according to any one of claims 1 to 7.
15. A computer-readable storage medium, characterized in that it has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for monitoring remaining battery power of a train battery as claimed in any one of claims 1 to 7.
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