CN111403854A - Temperature control system and control method for communication base station battery cabinet - Google Patents
Temperature control system and control method for communication base station battery cabinet Download PDFInfo
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- CN111403854A CN111403854A CN202010210862.2A CN202010210862A CN111403854A CN 111403854 A CN111403854 A CN 111403854A CN 202010210862 A CN202010210862 A CN 202010210862A CN 111403854 A CN111403854 A CN 111403854A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/627—Stationary installations, e.g. power plant buffering or backup power supplies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application provides a temperature control system and a control method for a communication base station battery cabinet, wherein the temperature control system comprises a controller, a display screen, an acquisition module and a heating module, wherein the display screen, the acquisition module and the heating module are connected with the controller; the display screen is used for realizing human-computer interaction, checking the temperature in the battery cabinet in real time through the display screen, and sending a temperature set value in the battery cabinet to the controller through the display screen; the acquisition module is used for acquiring the temperature in the battery cabinet in real time and transmitting the acquired temperature signal to the controller; the controller adopts a digital PID controller, obtains a heating control signal by adopting a PID control algorithm according to a real-time temperature value in the battery cabinet and a temperature set value in the battery cabinet, and controls the heating module to heat the interior of the battery cabinet by utilizing the heating control signal so as to control the temperature in the battery cabinet. This application can make the interior battery of battery cabinet reach best working property, and the power supply time of extension load improves the reliability of basic station load power supply.
Description
Technical Field
The application belongs to the technical field of battery cabinet control, and particularly relates to a temperature control system and a temperature control method for a communication base station battery cabinet.
Background
With the rapid development of communication industry, the demand of communication base stations for power supply systems thereof is increasing. In general, a lead-acid battery is adopted as an emergency power supply for a communication base station, however, in cold regions, due to low air temperature, the available capacity of the lead-acid battery is sharply reduced, and the standby time of the original load is sharply reduced.
Generally, a heat preservation cabinet is arranged on a battery in a communication base station in a cold region, and the heat preservation effect of the cabinet body is enhanced by adding rock wool heat preservation materials. The temperature in the cabinet body is maintained by the self heat productivity of the battery during operation, and if the environment temperature in the cabinet body is lower than 5 ℃, a temperature control system is required to be added independently. In the current common temperature control system, the temperature control mode is as follows: and starting the temperature control system when the ambient temperature is lower than a set value, and closing the temperature control system when the ambient temperature is higher than the set value. The temperature control mode cannot accurately control the temperature in the cabinet body, namely, the temperature in the battery cabinet can only be controlled within a certain temperature range, and the temperature cannot be accurately controlled to the optimal temperature for the operation of the battery.
The inventor of the application discovers that in the research and development process, in order to improve the power supply reliability of the load of the communication base station and increase the standby power time of the emergency power supply, a temperature control system in the battery cabinet needs to be optimally designed, the accurate control of the temperature is realized, and the battery in the battery cabinet achieves the best working performance.
Disclosure of Invention
In order to overcome the problems in the related art at least to a certain extent, the application provides a temperature control system and a control method for a communication base station battery cabinet.
According to a first aspect of the embodiments of the present application, the present application provides a temperature control system for a communication base station battery cabinet, which includes a controller, and a display screen, an acquisition module and a heating module connected to the controller;
the display screen is used for realizing human-computer interaction, checking the temperature in the battery cabinet in real time through the display screen, and sending a temperature set value in the battery cabinet to the controller through the display screen;
the acquisition module is used for acquiring the temperature in the battery cabinet in real time and sending the acquired temperature signal to the controller;
the controller adopts a digital PID controller, obtains a heating control signal by adopting a PID control algorithm according to a real-time temperature value in the battery cabinet and a temperature set value in the battery cabinet, and controls the heating module to heat the interior of the battery cabinet by utilizing the heating control signal so as to control the temperature in the battery cabinet.
In the temperature control system for the communication base station battery cabinet, the acquisition module adopts a PT100 thermal resistor, and the PT100 thermal resistor is used for measuring the temperature in the battery cabinet and converting the temperature in the battery cabinet into a resistance analog quantity signal; the controller converts the resistance analog quantity signal into a digital quantity signal.
Furthermore, the heating module comprises a solid-state relay and an electric heating piece, and the controller controls the on-off of the solid-state relay by using a heating control signal so as to control the on-off of the electric heating piece loop.
The temperature control system for the communication base station battery cabinet further comprises an input/output module, wherein an analog quantity input channel and a digital quantity output channel are arranged in the input/output module, the PT100 thermal resistor is connected with the analog quantity input channel, and the analog quantity input channel converts a received resistor analog quantity signal into a digital quantity signal and sends the digital quantity signal to the controller;
the digital output channel is connected with the solid-state relay, and the heating control signal is output to the solid-state relay through the digital output channel so as to control the on-off of the solid-state relay.
Further, the heating control signal is a digital pulse percentage signal;
the digital pulse percentage signal is a digital pulse percentage given value P of the current control periodoWherein P isoComprises the following steps:
Po＝Po1+kp*(Err-Err1)+ki*Err+kd*(Err-2*Err1+Err2)，
in the formula, Po1Representing the percentage of the digital pulse of the last control periodGiven value, Err1Indicating the temperature control error in the battery cabinet, Err, in the previous control cycle2Indicating the temperature control error, k, in the battery cabinet in the next previous control cyclepDenotes the proportionality coefficient, kiRepresenting the integral coefficient, kdRepresents a differential coefficient; err represents a temperature control error in the battery box, and Err is TSET-T，TSETAnd the temperature set value in the battery cabinet is represented, and the T represents the real-time temperature value in the battery cabinet.
According to a second aspect of the embodiments of the present application, there is also provided a temperature control method for a communication base station battery cabinet, including the following steps:
presetting a temperature set value in the battery cabinet, and acquiring a real-time temperature value in the battery cabinet;
calculating a temperature control error in the battery cabinet according to a temperature set value in the battery cabinet and a real-time temperature value in the battery cabinet;
calculating a digital pulse percentage set value of a current control period by adopting a PID control algorithm according to a temperature control error in the battery cabinet;
and controlling the heating of the battery cabinet by using the digital pulse percentage set value of the current control period.
In the above temperature control method for a communication base station battery cabinet, the temperature control error in the battery cabinet is as follows:
Err＝TSET-T，
where Err represents the temperature control error in the battery cabinet, TSETAnd the temperature set value in the battery cabinet is represented, and the T represents the real-time temperature value in the battery cabinet.
Further, the given value of the digital pulse percentage in the current control period is:
Po＝Po1+kp*(Err-Err1)+ki*Err+kd*(Err-2*Err1+Err2)，
in the formula, PoIndicating the digital pulse percentage setpoint, P, of the current control periodo1Indicating the digital pulse percentage setpoint, Err, of the previous control period1Indicating last control cycle batteryTemperature control error in the cabinet, Err2Indicating the temperature control error, k, in the battery cabinet in the next previous control cyclepDenotes the proportionality coefficient, kiRepresenting the integral coefficient, kdRepresenting the differential coefficient.
The temperature control method for the communication base station battery cabinet further comprises the following steps:
controlling the temperature error Err in the battery cabinet in the last control period1Stored as Err2Storing the temperature control error Err in the battery cabinet in the control period as Err1Setting the digital pulse percentage of the control period to be a given value PoIs preserved as Po1So as to update the given value of the digital pulse percentage in each control period.
According to a third aspect of embodiments of the present application, there is also provided a computer storage medium including a computer program, where the computer program is executed by a processor to perform any one of the steps in the method for controlling the temperature of a communication base station battery cabinet.
According to the above embodiments of the present application, at least the following advantages are obtained: the difference value of the temperature set value in the battery cabinet and the real-time temperature value in the battery cabinet is used as the input quantity of the digital PID controller, the digital pulse percentage set value is calculated by utilizing a PID control algorithm, and the battery cabinet is subjected to heating control by utilizing the digital pulse percentage set value.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the scope of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification of the application, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a block diagram of a temperature control system for a battery cabinet of a communication base station according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of an operation of a controller in a temperature control system for a battery cabinet of a communication base station according to an embodiment of the present disclosure.
Fig. 3 is a third block diagram of a temperature control system for a battery cabinet of a communication base station according to an embodiment of the present invention.
Fig. 4 is a third block diagram of a temperature control system for a battery cabinet of a communication base station according to an embodiment of the present invention.
Fig. 5 is a flowchart of a temperature control method for a communication base station battery cabinet according to an embodiment of the present disclosure.
Description of reference numerals:
1. a controller; 2. a display screen;
3. an acquisition module; 31. PT100 thermal resistance;
4. a heating module; 41. a solid state relay; 42. an electrical heating sheet;
5. an input-output module; 51. an analog input channel; 52. and (4) a digital quantity output channel.
Detailed Description
For the purpose of promoting a clear understanding of the objects, aspects and advantages of the embodiments of the present application, reference will now be made to the accompanying drawings and detailed description, wherein like reference numerals refer to like elements throughout.
The illustrative embodiments and descriptions of the present application are provided to explain the present application and not to limit the present application. Additionally, the same or similar numbered elements/components used in the drawings and the embodiments are used to represent the same or similar parts.
As used herein, "first," "second," …, etc., are not specifically intended to mean in a sequential or chronological order, nor are they intended to limit the application, but merely to distinguish between elements or operations described in the same technical language.
With respect to directional terminology used herein, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present teachings.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
As used herein, "and/or" includes any and all combinations of the described items.
References to "plurality" herein include "two" and "more than two"; reference to "multiple sets" herein includes "two sets" and "more than two sets".
As used herein, the terms "substantially", "about" and the like are used to modify any slight variation in quantity or error that does not alter the nature of the variation. In general, the range of slight variations or errors that such terms modify may be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments, or other values. It should be understood by those skilled in the art that the aforementioned values can be adjusted according to actual needs, and are not limited thereto.
Certain words used to describe the present application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present application.
Fig. 1 is a block diagram of a temperature control system for a battery cabinet of a communication base station according to an embodiment of the present disclosure.
As shown in fig. 1, the temperature control system for a communication base station battery cabinet provided by the embodiment of the present application includes a controller 1, and a display screen 2, an acquisition module 3, and a heating module 4 connected to the controller 1.
The acquisition module 3 is used for acquiring the temperature in the battery cabinet in real time and transmitting the acquired temperature signal to the controller 1.
Fig. 2 is a schematic diagram of an operation of a controller in a temperature control system for a battery cabinet of a communication base station according to an embodiment of the present disclosure.
As shown in fig. 2, the controller 1 adopts a digital PID controller, and the real-time temperature value in the battery cabinet acquired by the acquisition module 3 is used as the input quantity of the controller 1 and is subtracted from the temperature set value in the battery cabinet to obtain a temperature control error; the controller 1 obtains a heating control signal by using the temperature control error and adopting a PID control algorithm, and the controller 1 controls the heating module 4 to heat the interior of the battery cabinet by using the heating control signal, so that the constant control of the temperature in the battery cabinet is realized.
Fig. 3 is a third block diagram of a temperature control system for a battery cabinet of a communication base station according to an embodiment of the present invention.
As shown in fig. 3, in particular, the collection module 3 employs a PT100 thermal resistor 31, and the PT100 thermal resistor 31 is used for measuring the temperature in the battery cabinet, converting the temperature in the battery cabinet into a resistor analog signal, and sending the resistor analog signal to the controller 1. The controller 1 converts the resistance analog quantity signal into a digital quantity signal.
The heating module 4 comprises a solid-state relay 41 and an electric heating piece 42, and the controller 1 controls the on-off of the solid-state relay 41 by using a heating control signal, so as to control the on-off of a loop of the electric heating piece 42. The working voltage of the electric heating sheet 42 can be 48V, and electricity is directly taken from the battery side for heating the battery cabinet.
Fig. 4 is a third block diagram of a temperature control system for a battery cabinet of a communication base station according to an embodiment of the present invention.
As shown in fig. 4, in the embodiment of the present application, an input/output module 5 is provided in a temperature control system for a communication base station battery cabinet, the input/output module 5 is connected to a controller 1, an analog input channel 51 and a digital output channel 52 are provided in the input/output module 5, a PT100 thermal resistor 31 is connected to the analog input channel 51, and the analog input channel 51 converts a received resistor analog signal into a digital signal and sends the digital signal to the controller 1.
The digital output channel 52 is connected to the solid-state relay 41, the heating control signal output by the controller 1 may specifically be a digital pulse percentage signal, and the digital pulse percentage signal is output to the solid-state relay 41 through the digital output channel 52 to control on/off of the solid-state relay 41.
The temperature control system for the communication base station battery cabinet provided by the embodiment of the application can realize accurate control of the temperature in the battery cabinet through the digital PID controller, so that the battery in the battery cabinet reaches the best working performance, the power supply time of a load is prolonged, and the reliability of power supply of a base station load is improved.
Fig. 5 is a flowchart of a temperature control method for a communication base station battery cabinet according to an embodiment of the present disclosure.
Based on the temperature control system for the communication base station battery cabinet provided by the specific embodiment of the present application, as shown in fig. 5, the present application further provides a temperature control method for the communication base station battery cabinet, which includes the following steps:
and S1, presetting a temperature set value in the battery cabinet, and acquiring a real-time temperature value in the battery cabinet.
Wherein, can predetermine the interior temperature set value of battery cabinet through display screen 2, the interior temperature set value of battery cabinet transmits to controller 1 in.
The temperature in the battery cabinet can be measured through the PT100 thermal resistor 31 and converted into a resistor analog signal. Of course, a temperature sensor can be used to obtain the temperature value in the battery cabinet in real time.
S2, calculating a temperature control error in the battery cabinet according to the temperature set value in the battery cabinet and the real-time temperature value in the battery cabinet;
the difference between the temperature set value in the battery cabinet and the real-time temperature value in the battery cabinet is used as the temperature control error in the battery cabinet, namely:
Err＝TSET-T (1)
in the formula (1), Err represents a temperature control error in the battery cabinet, TSETAnd the temperature set value in the battery cabinet is represented, and the T represents the real-time temperature value in the battery cabinet.
S3, calculating the digital pulse percentage set value of the current control period by adopting a PID control algorithm according to the temperature control error in the battery cabinet;
Po＝Po1+kp*(Err-Err1)+ki*Err+kd*(Err-2*Err1+Err2) (2)
in the formula (2), PoIndicating the digital pulse percentage setpoint, P, of the current control periodo1Indicating the digital pulse percentage setpoint, Err, of the previous control period1Indicating the temperature control error in the battery cabinet, Err, in the previous control cycle2Indicating the temperature control error, k, in the battery cabinet in the next previous control cyclepDenotes the proportionality coefficient, kiRepresenting the integral coefficient, kdRepresenting the differential coefficient.
And S4, controlling the heating of the battery cabinet by using the digital pulse percentage set value of the current control period.
Specifically, the controller 1 controls the on-off of the solid-state relay 41 by using the digital pulse percentage set value of the current control period, so as to realize the on-off control of the loop of the electric heating sheet 42.
The temperature control method for the communication base station battery cabinet provided by the embodiment of the application further comprises the following steps:
controlling the temperature error Err in the battery cabinet in the last control period1Stored as Err2Storing the temperature control error Err in the battery cabinet in the control period as Err1Setting the digital pulse percentage of the control period to be a given value PoIs preserved as Po1So as to realize the continuous update of the digital pulse percentage set value of each control period.
According to the temperature control method for the battery cabinet of the communication base station, the difference value between the temperature set value in the battery cabinet and the real-time temperature value in the battery cabinet is used as the temperature control error in the battery cabinet, a PID (proportion integration differentiation) control algorithm is adopted, the heating control signal is calculated, the heating module 4 is controlled by the heating control signal, and the constant and accurate control of the temperature in the battery cabinet can be realized.
In an exemplary embodiment, the present application further provides a computer storage medium, which is a computer readable storage medium, for example, a memory including a computer program, which is executable by a processor to perform the steps in the foregoing temperature control method for a communication base station battery cabinet.
The embodiments of the present application described above may be implemented in various hardware, software code, or a combination of both. For example, the embodiments of the present application may also be program code for executing the above-described method in a data signal processor. The present application may also relate to various functions performed by a computer processor, digital signal processor, microprocessor, or field programmable gate array. The processor described above may be configured in accordance with the present application to perform certain tasks by executing machine-readable software code or firmware code that defines certain methods disclosed herein. Software code or firmware code may be developed in different programming languages and in different formats or forms. Software code may also be compiled for different target platforms. However, different code styles, types, and languages of software code and other types of configuration code for performing tasks according to the present application do not depart from the spirit and scope of the present application.
The foregoing is merely an illustrative embodiment of the present application, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present application shall fall within the protection scope of the present application.
Claims (10)
1. A temperature control system for a communication base station battery cabinet is characterized by comprising a controller, a display screen, an acquisition module and a heating module, wherein the display screen, the acquisition module and the heating module are connected with the controller;
the display screen is used for realizing human-computer interaction, checking the temperature in the battery cabinet in real time through the display screen, and sending a temperature set value in the battery cabinet to the controller through the display screen;
the acquisition module is used for acquiring the temperature in the battery cabinet in real time and sending the acquired temperature signal to the controller;
the controller adopts a digital PID controller, obtains a heating control signal by adopting a PID control algorithm according to a real-time temperature value in the battery cabinet and a temperature set value in the battery cabinet, and controls the heating module to heat the interior of the battery cabinet by utilizing the heating control signal so as to control the temperature in the battery cabinet.
2. The system of claim 1, wherein the collection module employs a PT100 thermal resistor, the PT100 thermal resistor is configured to measure the temperature inside the battery cabinet and convert the temperature inside the battery cabinet into a resistance analog signal; the controller converts the resistance analog quantity signal into a digital quantity signal.
3. The temperature control system for the communication base station battery cabinet as claimed in claim 2, wherein the heating module comprises a solid-state relay and an electric heating plate, and the controller controls the on-off of the solid-state relay by using a heating control signal, so as to control the on-off of the electric heating plate loop.
4. The temperature control system for the battery cabinet of the communication base station as claimed in claim 3, further comprising an input/output module, wherein the input/output module is provided with an analog input channel and a digital output channel, the PT100 thermal resistor is connected with the analog input channel, and the analog input channel converts a received analog signal of the resistor into a digital signal and sends the digital signal to the controller;
the digital output channel is connected with the solid-state relay, and the heating control signal is output to the solid-state relay through the digital output channel so as to control the on-off of the solid-state relay.
5. The temperature control system for a communication base station battery cabinet of claim 3, wherein the heating control signal is a digital pulse percentage signal;
the digital pulse percentage signal is a digital pulse percentage given value P of the current control periodoWherein P isoComprises the following steps:
Po＝Po1+kp*(Err-Err1)+ki*Err+kd*(Err-2*Err1+Err2)，
in the formula, Po1Indicating the digital pulse percentage setpoint, Err, of the previous control period1Indicating the temperature control error in the battery cabinet of the previous control cycle, Err2 indicating the temperature control error in the battery cabinet of the next previous control cycle, kpDenotes the proportionality coefficient, kiRepresenting the integral coefficient, kdRepresents a differential coefficient; err represents a temperature control error in the battery box, and Err is TSET-T，TSETAnd the temperature set value in the battery cabinet is represented, and the T represents the real-time temperature value in the battery cabinet.
6. A temperature control method for a communication base station battery cabinet is characterized by comprising the following steps:
presetting a temperature set value in the battery cabinet, and acquiring a real-time temperature value in the battery cabinet;
calculating a temperature control error in the battery cabinet according to a temperature set value in the battery cabinet and a real-time temperature value in the battery cabinet;
calculating a digital pulse percentage set value of a current control period by adopting a PID control algorithm according to a temperature control error in the battery cabinet;
and controlling the heating of the battery cabinet by using the digital pulse percentage set value of the current control period.
7. The method according to claim 6, wherein the temperature control error in the battery cabinet is as follows:
Err＝TSET-T，
where Err represents the temperature control error in the battery cabinet, TSETThe temperature set value in the battery cabinet is shown, and T showsReal-time temperature values in the battery cabinet.
8. The method of claim 7, wherein the digital pulse percentage setpoint for the current control period is:
Po＝Po1+kp*(Err-Err1)+ki*Err+kd*(Err-2*Err1+Err2)，
in the formula, PoIndicating the digital pulse percentage setpoint, P, of the current control periodo1Indicating the digital pulse percentage setpoint, Err, of the previous control period1Indicating the temperature control error in the battery cabinet, Err, in the previous control cycle2Indicating the temperature control error, k, in the battery cabinet in the next previous control cyclepDenotes the proportionality coefficient, kiRepresenting the integral coefficient, kdRepresenting the differential coefficient.
9. The method for controlling the temperature of the battery cabinet of the communication base station according to claim 8, further comprising the steps of:
controlling the temperature error Err in the battery cabinet in the last control period1Stored as Err2Storing the temperature control error Err in the battery cabinet in the control period as Err1Setting the digital pulse percentage of the control period to be a given value PoIs preserved as Po1So as to update the given value of the digital pulse percentage in each control period.
10. A computer storage medium, comprising a computer program, wherein the computer program is executed by a processor to perform the steps of any one of claims 6 to 9 in the method for controlling the temperature of a battery cabinet of a communication base station.
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