CN110154821B - Method for prolonging service life of charging module - Google Patents

Method for prolonging service life of charging module Download PDF

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Publication number
CN110154821B
CN110154821B CN201910542989.1A CN201910542989A CN110154821B CN 110154821 B CN110154821 B CN 110154821B CN 201910542989 A CN201910542989 A CN 201910542989A CN 110154821 B CN110154821 B CN 110154821B
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life
rotating speed
charging module
fan
residual
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CN110154821A (en
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彭科
邱熙
邓华森
程旭
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China Southern Power Grid Internet Service Co ltd
Electric Vehicle Service of Southern Power Grid Co Ltd
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Electric Vehicle Service of Southern Power Grid Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/302—Cooling of charging equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application relates to a method for prolonging the service life of a charging module, which comprises the steps of obtaining the ambient temperature and the output power of the charging module; predicting the residual life of the charging module according to the environment temperature and the output power; when the remaining life is higher than or equal to a life threshold, the fan executes a first rotating speed strategy, wherein the first rotating speed strategy is to set the rotating speed of the fan to be a first rotating speed, and the first rotating speed is in a mapping relation with the environment temperature and the output power; and when the residual life is lower than a life threshold, the fan executes a second rotating speed strategy, wherein the second rotating speed strategy is to increase the rotating speed of the fan on the basis of the first rotating speed. The method predicts the residual service life of the charging module according to the environmental temperature and the output power, and switches the rotating speed strategy of the fan to increase the rotating speed when the residual service life is lower than the residual service life, so that the environmental temperature of an electrolytic capacitor and an optical coupler in the charging module is reduced, and the service life of the charging module is prolonged.

Description

Method for prolonging service life of charging module
Technical Field
The application relates to the field of charging and discharging, in particular to a method for prolonging the service life of a charging module.
Background
At present, new energy vehicles develop very rapidly, fuel vehicles are replaced slowly, a large number of charging facilities are built with matched electric vehicles, and direct current charging piles are common charging equipment in the market at present, however, survey reports show that: most of failures of the direct current charging pile of the electric automobile are caused by failures of the internal direct current charging module.
However, the industry of charging piles pursues quick charging and reduces charging waiting time, which also brings great challenges to the service life of the charging module, resulting in low service life and easy failure of the charging module.
Disclosure of Invention
In view of the above, it is necessary to provide a method for prolonging the life of the charging module in order to solve the problems of low life and high volatility of the charging module.
A method of extending a life of a charging module, the charging module including a fan, the method comprising:
acquiring the ambient temperature and the output power of the charging module;
predicting the residual life of the charging module according to the environment temperature and the output power;
when the remaining life is higher than or equal to a life threshold, the fan executes a first rotating speed strategy, wherein the first rotating speed strategy is to set the rotating speed of the fan to be a first rotating speed, and the first rotating speed is in a mapping relation with the environment temperature and the output power;
and when the residual life is lower than a life threshold, the fan executes a second rotating speed strategy, wherein the second rotating speed strategy is to increase the rotating speed of the fan on the basis of the first rotating speed.
In one embodiment, the predicting the remaining life of the charging module according to the ambient temperature and the output power includes:
when the environment temperature is higher than a preset temperature, recording a first time length, wherein the first time length is used for marking the time length of the environment temperature higher than the preset temperature;
when the output power is higher than the preset power, recording a second time length, wherein the second time length is used for marking the time length of the output power higher than the preset power;
predicting the remaining life of the charging module according to the first duration and the second duration.
In one embodiment, the predicting the remaining life of the charging module in real time according to the first time period and the second time period includes:
predicting a first residual life of the charging module in real time according to the first duration;
predicting a second residual life of the charging module in real time according to the second duration;
and obtaining the residual life according to a life prediction function, wherein the life prediction function is used for representing the corresponding relation between the residual life and the first residual life and the second residual life.
In one embodiment, before the obtaining the remaining life according to the life prediction function, the method further includes: collecting a plurality of groups of life data, wherein each group of life data comprises: the first remaining life, and a corresponding remaining life; and fitting the life prediction function according to the plurality of groups of life data.
In one embodiment, the predicting the remaining life of the charging module in real time for the second duration includes:
predicting a first residual life of the charging module in real time according to the first duration;
predicting a second residual life of the charging module in real time according to the second duration;
and taking the smaller value of the first residual life and the second residual life as the residual life.
In one embodiment, the charging module further comprises a digital signal processing unit, and the method comprises: and acquiring the first time length and the second time length by utilizing the digital signal processing unit.
In one embodiment, the method further comprises: and when the ambient temperature is lower than or equal to the preset temperature, controlling the fan to continuously execute the first rotating speed strategy.
In one embodiment, the method further comprises: and when the output power is lower than or equal to the preset power, controlling the fan to continuously execute the first rotating speed strategy.
In one embodiment, the fan comprises a first fan and a second fan, and the method further comprises: when the environment temperature is lower than or equal to the preset temperature, controlling the first fan to continuously execute the first rotating speed strategy; and when the output power is lower than or equal to the preset power, controlling the second fan to continuously execute the first rotating speed strategy.
In one embodiment, the method further comprises: and when the residual life is lower than a life threshold value, generating a life early warning signal.
According to the method for prolonging the service life of the charging module, the ambient temperature and the output power of the charging module are obtained; predicting the residual life of the charging module according to the environment temperature and the output power; when the remaining life is higher than or equal to a life threshold, the fan executes a first rotating speed strategy, wherein the first rotating speed strategy is to set the rotating speed of the fan to be a first rotating speed, and the first rotating speed is in a mapping relation with the environment temperature and the output power; and when the residual life is lower than a life threshold, the fan executes a second rotating speed strategy, wherein the second rotating speed strategy is to increase the rotating speed of the fan on the basis of the first rotating speed. The method predicts the residual service life of the charging module according to the environmental temperature and the output power, and switches the rotating speed strategy of the fan to increase the rotating speed when the residual service life is lower than the residual service life, so that the environmental temperature of an electrolytic capacitor and an optical coupler in the charging module is reduced, and the service life of the charging module is prolonged.
Drawings
Fig. 1 is a flowchart illustrating a method for prolonging a life of a charging module according to an embodiment of the present disclosure;
fig. 2 is a flowchart illustrating a method for predicting a remaining life of a charging module according to an embodiment of the present disclosure;
FIG. 3 is a flowchart illustrating a method for predicting remaining life of a charging module according to another embodiment of the present disclosure;
fig. 4 is a flowchart of a method for obtaining a life prediction function according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and in the accompanying drawings, preferred embodiments of the present application are set forth. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
An embodiment of the present application provides a method for prolonging a service life of a charging module, where the charging module includes a fan, and as shown in fig. 1, the method includes:
102, acquiring the ambient temperature and the output power of a charging module;
the ambient temperature may be a temperature acquired by a temperature sensor inside the charging module in real time, or a temperature on a surface of the charging module, or a temperature on a surface of a coupling capacitor inside the charging module, which is not limited herein. The output power refers to power output by the charging module to the external device.
Specifically, ambient temperature may be collected using a temperature sensor, and output power may be measured using an ammeter, voltmeter, or wattmeter.
Step 104, predicting the residual life of the charging module according to the environment temperature and the output power;
and when the environment temperature is higher, the output power is higher, and the residual life of the charging module is shorter.
Specifically, through many experiments, multiple sets of actual data are collected, and each set of data includes three elements: ambient temperature, output power, and remaining life. And performing function fitting on the three elements so as to obtain a mapping relation between the ambient temperature and the output power and the residual service life of the charging module. When the ambient temperature and the output power are known, the fitted function is substituted, and the service life of the charging module can be predicted. In addition, a plurality of groups of actual data can be listed in a form of a table, the environmental temperature, the output power and the residual service life are corresponding, and when the environmental temperature and the output power are known, the corresponding residual service life is obtained by inquiring the table.
Step 106, when the remaining life is higher than the life threshold, the fan executes a first rotating speed strategy, wherein the first rotating speed strategy is that the rotating speed of the fan is set to be a first rotating speed, and the first rotating speed is in a mapping relation with the environment temperature and the output power;
the life threshold refers to a relative life parameter set according to a design life of the charging module when the charging module leaves a factory, for example, the life threshold may be 10%, 15%, 20%, 25%, 30%, 35% of the design life, the above listed proportions are only used for explaining existence possibility of the life threshold, no limitation is made on actual setting of the life threshold, and the life threshold may be set by an engineer according to actual requirements. The first rotating speed strategy refers to setting the rotating speed of the fan as a first rotating speed, wherein the first rotating speed is not a fixed value, but is adaptively adjusted according to the current environment temperature and the output power, namely the first rotating speed strategy is executed, and the environment temperature and the output power have a mapping relation with the rotating speed of the fan.
Specifically, when the remaining life is equal to or higher than the life threshold, it indicates that the life of the current charging module is long, and the state of life warning is not reached. Controlling the fan to execute a first rotating speed strategy, wherein for example, the ambient temperature is T1, the output power is W1, and the corresponding first rotating speed value of the fan is N r/min; when the environment temperature or the output power is increased, the corresponding fan rotating speed is increased, when the environment temperature and the output power are decreased, the corresponding fan rotating speed is decreased, when one of the environment temperature and the output power is increased, and the other one is decreased, the corresponding fan rotating speed is calculated according to the mapping relation between the environment temperature and the output power and the rotating speed of the fan.
And 108, when the residual service life is lower than the service life threshold value, executing a second rotating speed strategy by the fan, wherein the second rotating speed strategy is to increase the rotating speed of the fan on the basis of the first rotating speed.
The second rotating speed strategy is to adjust the rotating speed of the fan on the basis of the first rotating speed, and the adjusted rotating speed of the fan is increased by a preset proportion on the basis of the first rotating speed. For example, under the second rotation speed strategy, the ambient temperature is T1, the output power is W1, and the corresponding fan rotation speed takes a value of N r/min, then under the second rotation speed strategy, the ambient temperature is T1, the output power is W1, and the corresponding fan rotation speed takes a value of N (1+ percent) r/min, where the preset ratio may be any value, such as 10%, 20%, 30%, 50%, 80%, 100%, or 200%.
Specifically, when the predicted remaining life is lower than the life threshold, it indicates that the life of the charging module has reached the early warning state, and the corresponding fan is controlled to execute the second rotation speed strategy, that is, the life of the charging module is prolonged by increasing the rotation speed of the fan. Because the life-span of fan depends on the bearing of fan, and the bearing life-span of fan is greater than coupling inductance and opto-coupler in theory far away, then the final life-span of the module that charges depends on coupling inductance and opto-coupler's life-span. When the predicted residual life is lower than the life threshold, the life of the coupling inductor and the optocoupler is prolonged in a mode of sacrificing the life of the fan, and then the life of the charging module is prolonged.
In one embodiment, predicting the remaining life of the charging module based on the ambient temperature and the output power comprises:
step 202, when the ambient temperature is higher than the preset temperature, recording a first time length, wherein the first time length is used for marking the time length that the ambient temperature is higher than the preset temperature;
wherein the preset temperature is a threshold set according to the ambient temperature, and can be any one of the values of 30-150 ℃, such as 35 ℃40 ℃, 50 ℃, 70 ℃, 100 ℃ or 120 ℃, the above values are for illustration only and are not limiting herein. The first time length refers to the accumulated time that the ambient temperature is higher than the preset temperature in the running process of the charging module after the charging module is started, the charging module runs for the first time, and the time that the ambient temperature is higher than the preset temperature is t1The second charging module operates, and the time when the ambient temperature is higher than the preset temperature is t2,., the Nth charging module runs, and the time when the ambient temperature is higher than the preset temperature is tnThe first time duration refers to the accumulated time of the charging module during multiple operations, and in this example, the first time duration is t1+t2+...+tnIt should be noted that the above example is only for illustration, and the value of the first time period is not limited.
Specifically, in each operation process of the charging module, once the ambient temperature is higher than the preset temperature, timing is started, and the time when the ambient temperature exceeds the preset temperature at this time and the time when the ambient temperature exceeds the preset temperature in all the previous operation processes are accumulated, so that the first time length is calculated.
Step 204, when the output power is higher than the preset power, recording a second time length, wherein the second time length is used for marking the time length when the output power is higher than the preset power;
the preset power is a threshold set according to the output power, for example, the preset power is 1000W, and the preset power may be any one value of 80% to 300% of the rated power, such as 110%, 120%, 150%, or 200%, which is only for illustration and is not limited herein. The second duration refers to the accumulated time that the output power is higher than the preset power in the running process of the charging module after the charging module is started.
Specifically, in each operation process of the charging module, once the output power is higher than the preset power, timing is started, and the time that the output power is higher than the preset power in the operation process is accumulated with the time that the output power is higher than the preset power in all the previous operation times, so that the second time length is calculated.
And step 206, predicting the residual life of the charging module according to the first time length and the second time length.
Specifically, the first time length identifies the over-temperature working time of the charging module, the second time length identifies the over-power load working time of the charging module, and the first time length and the second time length reflect the loss degree of the charging module to elements such as a coupling capacitor and an optical coupler in the charging module under the action of the over-temperature and over-power. Can gather multiunit experimental data through many experiments, every group data includes: the first duration, the second duration and the corresponding remaining life. And listing a plurality of groups of actual data in a form of a table, corresponding the first time length, the second time length and the corresponding residual life, and obtaining the corresponding residual life by querying the table when the first time length and the second time length are known.
In one embodiment, predicting the remaining life of the charging module in real time according to the first time length and the second time length comprises:
step 302, predicting a first residual life of the charging module in real time according to the first duration;
specifically, through repeated tests, the remaining life corresponding to the charging module is recorded when the first duration is different values. And aiming at each numerical value of the first time length, acquiring a plurality of groups of parameters of the remaining life, analyzing the plurality of groups of parameters of the remaining life, wherein the first time length can be an average value, a median value or a minimum value, and taking the value as the corresponding first remaining life after the charging module operates for the first time length at the over-temperature state.
Step 304, predicting a second remaining life of the charging module in real time according to the second duration;
specifically, through repeated tests, the remaining life corresponding to the charging module when the second duration is different values is recorded. And aiming at each value of the second time length, acquiring a plurality of groups of parameters corresponding to the residual life, analyzing the plurality of groups of parameters of the residual life, and taking the average value, the median value or the minimum value of the plurality of groups of parameters of the residual life as the corresponding second residual life after the charging module operates over-temperature for the second time length.
And step 306, obtaining the remaining life according to a life prediction function, wherein the life prediction function is used for representing the corresponding relation between the remaining life and the first remaining life and the second remaining life.
Specifically, the first remaining life and the second remaining life both have a mapping relation with the remaining life, but when the ambient temperature and the output power are different values, the weights of the first remaining life and the second remaining life occupying the remaining life are different. And establishing a prediction function relation of the residual life, the first residual life and the second residual life, wherein the first residual life and the second residual life are independent variables, and the residual life is a dependent variable. When the values of the first remaining life and the second remaining life are known, the corresponding remaining life can be obtained by substituting the values into the life prediction function.
In one embodiment, before obtaining the remaining life according to the life prediction function, the method further includes:
step 402, collecting a plurality of groups of life data, wherein each group of life data comprises: a first remaining life, a first remaining life and a corresponding remaining life;
and step 404, fitting a life prediction function according to the plurality of groups of life data.
Specifically, through many experiments, multiple sets of actual data are collected, and each set of data includes three elements: a first remaining life, and a corresponding remaining life. And performing function fitting on the three elements to obtain the first residual life, the mapping relation between the first residual life and the residual life of the charging module. When the first remaining life and the first remaining life are known, the fitted function is substituted, and the remaining life of the charging module can be predicted.
In one embodiment, predicting the remaining life of the charging module in real time according to the first time length and the second time length comprises:
predicting a first residual life of the charging module in real time according to the first duration;
specifically, through repeated tests, the remaining life corresponding to the charging module is recorded when the first duration is different values. And aiming at each numerical value of the first time length, acquiring a plurality of groups of parameters of the remaining life, analyzing the plurality of groups of parameters of the remaining life, wherein the first time length can be an average value, a median value or a minimum value, and taking the value as the corresponding first remaining life after the charging module operates for the first time length at the over-temperature state.
Predicting a second residual life of the charging module in real time according to the second duration;
and through repeated tests, recording the corresponding residual life of the charging module when the second time length is different values. And aiming at each numerical value of the second time length, acquiring a plurality of groups of parameters corresponding to the remaining life, and analyzing the plurality of groups of parameters of the remaining life, wherein the second time length can be an average value, a median value or a minimum value, and the value is used as the corresponding second remaining life after the charging module operates over-temperature for the second time length.
And taking the smaller value of the first residual life and the second residual life as the residual life.
Specifically, when the first remaining life is less than the second remaining life, the remaining life is the first remaining life; when the first residual life is less than or equal to the second residual life, the residual life is the second residual life; when the first remaining life is less than or equal to the second remaining life, the remaining life is the first remaining life, that is, the second remaining life. The early warning condition can be reduced by taking the smaller value of the first remaining life and the second remaining life, in other words, when the first remaining life or the second remaining life is lower than the life threshold, the fan is switched to the second rotating speed strategy.
In one embodiment, the charging module further comprises a digital signal processing unit, and the method comprises: and acquiring the first time length and the second time length by using a digital signal processing unit.
The digital Signal processing unit may be a Digital Signal Processing (DSP) chip. The DSP chip adopts a Harvard structure with separated programs and data, is provided with a special hardware multiplier, widely adopts pipeline operation, provides special DSP instructions, and can be used for quickly realizing various digital signal processing algorithms. The method comprises the steps of collecting the time length when the environment temperature exceeds the preset temperature for many times by using a DSP chip, accumulating and calculating to obtain a first time length, collecting the time length when the output power is higher than the preset power by using the DSP chip, and accumulating and calculating to obtain a second time length.
In one embodiment, the method further comprises: and when the ambient temperature is lower than or equal to the preset temperature, controlling the fan to continuously execute the first rotating speed strategy.
Specifically, when the ambient temperature is lower than or equal to the preset temperature, it indicates that the charging module operates in a situation where losses of the optical coupler and the coupling capacitor are small, and at this time, the fan is controlled to maintain the first rotating speed, and the first rotating speed strategy is continuously executed. The first rotating speed is not a fixed value, but is adaptively adjusted according to the current ambient temperature and output power, namely, in the first rotating speed strategy, the ambient temperature and the output power have a mapping relation with the rotating speed of the fan.
In one embodiment, the method further comprises: and when the output power is lower than or equal to the preset power, controlling the fan to continuously execute the first rotating speed strategy.
Specifically, when the output power is lower than or equal to the preset power, the charging module is operated in a situation that the loss of the optical coupler and the coupling capacitor is small, at the moment, the fan is controlled to keep a first rotating speed, and the first rotating speed strategy is continuously executed. The first rotating speed is not a fixed value, but is adaptively adjusted according to the current ambient temperature and output power, namely, in the first rotating speed strategy, the ambient temperature and the output power have a mapping relation with the rotating speed of the fan.
In one embodiment, the fan comprises a first fan and a second fan, and the method further comprises: when the ambient temperature is lower than or equal to the preset temperature, controlling the first fan to continuously execute a first rotating speed strategy; and when the output power is lower than or equal to the preset power, controlling the second fan to continuously execute the first rotating speed strategy.
Specifically, the fan includes first fan and second fan, and the opto-coupler and the coupling capacitance loss that first fan aroused ambient temperature are alleviated through the cooling, and the opto-coupler and the coupling capacitance loss that the second fan arouses output are alleviated through the cooling. When the ambient temperature is lower than or equal to the preset temperature, controlling the first fan to continuously execute a first rotating speed strategy; and when the output power is lower than or equal to the preset power, controlling the second fan to continuously execute the first rotating speed strategy. The first rotating speed is not a fixed value, but is adaptively adjusted according to the current environment temperature and the output power, namely, a first rotating speed strategy is executed, and the environment temperature and the output power have a mapping relation with the rotating speed of the fan.
In one embodiment, the method further comprises: and when the residual life is lower than the life threshold value, generating a life early warning signal.
Specifically, the early warning signal may be sent to a background server to prompt a worker that the remaining life of the charging module reaches an early warning value and needs to be paid attention to and maintained or replaced; the early warning signal can also be sent to a microprocessor of the charging device to trigger the microprocessor to send a control instruction to the fan, so that the fan is switched from the first rotating speed strategy to the second rotating speed strategy.
It should be understood that although the various steps in the flow charts of fig. 1-4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1-4 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
According to the method for prolonging the service life of the charging module, the ambient temperature and the output power of the charging module are obtained; predicting the residual life of the charging module according to the environment temperature and the output power; when the remaining life is higher than or equal to a life threshold, the fan executes a first rotating speed strategy, wherein the first rotating speed strategy is to set the rotating speed of the fan to be a first rotating speed, and the first rotating speed is in a mapping relation with the environment temperature and the output power; and when the residual life is lower than a life threshold, the fan executes a second rotating speed strategy, wherein the second rotating speed strategy is to increase the rotating speed of the fan on the basis of the first rotating speed. The method predicts the residual service life of the charging module according to the environmental temperature and the output power, and switches the rotating speed strategy of the fan to increase the rotating speed when the residual service life is shorter than the residual service life, so that the environmental temperature of an electrolytic capacitor and an optical coupler in the charging module is reduced, and the service life of the charging module is prolonged.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A method of extending the life of a charging module, wherein the charging module includes a fan, the method comprising:
acquiring the ambient temperature and the output power of the charging module;
predicting the residual life of the charging module according to the environment temperature and the output power;
when the remaining life is higher than or equal to a life threshold, the fan executes a first rotating speed strategy, wherein the first rotating speed strategy is to set the rotating speed of the fan to be a first rotating speed, and the first rotating speed is in a mapping relation with the environment temperature and the output power;
and when the residual service life is lower than a service life threshold value, the fan executes a second rotating speed strategy, and the second rotating speed strategy is to increase the rotating speed of the fan by a preset proportion on the basis of the first rotating speed.
2. The method of claim 1, wherein predicting the remaining life of the charging module based on the ambient temperature and the output power comprises:
when the environment temperature is higher than a preset temperature, recording a first time length, wherein the first time length is used for marking the time length of the environment temperature higher than the preset temperature;
when the output power is higher than the preset power, recording a second time length, wherein the second time length is used for marking the time length of the output power higher than the preset power;
predicting the remaining life of the charging module according to the first duration and the second duration.
3. The method of claim 2, wherein predicting the remaining life of the charging module in real time based on the first duration and the second duration comprises:
predicting a first residual life of the charging module in real time according to the first duration;
predicting a second residual life of the charging module in real time according to the second duration;
and obtaining the residual life according to a life prediction function, wherein the life prediction function is used for representing the corresponding relation between the residual life and the first residual life and the second residual life.
4. The method of claim 3, wherein prior to said obtaining said remaining life from a life prediction function, the method further comprises:
collecting a plurality of groups of life data, wherein each group of life data comprises: the first remaining life, and a corresponding remaining life;
and fitting the life prediction function according to the plurality of groups of life data.
5. The method of claim 2, wherein predicting the remaining life of the charging module in real time based on the first duration and the second duration comprises:
predicting a first residual life of the charging module in real time according to the first duration;
predicting a second residual life of the charging module in real time according to the second duration;
and taking the smaller value of the first residual life and the second residual life as the residual life.
6. The method of claim 2, wherein the charging module further comprises a digital signal processing unit, the method comprising: and acquiring the first time length and the second time length by utilizing the digital signal processing unit.
7. The method of claim 2, further comprising:
and when the ambient temperature is lower than or equal to the preset temperature, controlling the fan to continuously execute the first rotating speed strategy.
8. The method of claim 2, further comprising:
and when the output power is lower than or equal to the preset power, controlling the fan to continuously execute the first rotating speed strategy.
9. The method of claim 2, wherein the fan comprises a first fan and a second fan, the method further comprising:
when the environment temperature is lower than or equal to the preset temperature, controlling the first fan to continuously execute the first rotating speed strategy;
and when the output power is lower than or equal to the preset power, controlling the second fan to continuously execute the first rotating speed strategy.
10. The method of claim 1, further comprising:
and when the residual life is lower than a life threshold value, generating a life early warning signal.
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CN111927810B (en) * 2020-07-23 2021-02-26 深圳市几素科技有限公司 Charging and discharging information data processing method and device applied to handheld fan
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