CN116683567B - High-precision bidirectional direct-current power supply for electric control test of new energy automobile - Google Patents
High-precision bidirectional direct-current power supply for electric control test of new energy automobile Download PDFInfo
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Abstract
The invention discloses a high-precision bidirectional direct current power supply for electric control test of a new energy automobile, relates to the technical field of new energy automobiles, and aims to solve the problems of imperfect control of power supply equipment in the new energy automobile and inaccurate detection of automobile power supply data. The invention can set the parameters in the power supply element according to the peak power of the multi-wave mixing of the current signals, can ensure the success rate and the reliability of the electric signals during conversion, improves the working efficiency and the stability, and effectively improves the threshold value comparison of the current parameters of different types of equipment by overlapping and comparing the parameter data with the standard parameter data through the parameter curve library, so that the current data of each equipment can be subjected to unqualified data investigation, the reliability of the data is enhanced, the abnormal data of which the temperature calculation threshold value is not in the standard threshold value is displayed at the terminal, and a driver can timely know the abnormal data of the battery and perform timely control operation.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a high-precision bidirectional direct current power supply for electric control test of a new energy automobile.
Background
The new energy vehicle adopts unconventional vehicles and uses fuel as a power source.
The Chinese patent with publication number CN114670708A discloses a new energy automobile electric control maintaining system and method, mainly through an added background data processing module, a data reading unit directly reads the storage data of a database storage unit, when a current abnormality reading unit and a voltage abnormality reading unit respectively read the current and voltage abnormality of a new energy battery pack, a main loop cutting unit directly closes the main loop of the new energy battery pack to block the power supply of the new energy battery pack, when a corresponding temperature reading unit reads the temperature of the new energy battery pack in real time under the abnormality, and when the current abnormality reading unit and the voltage abnormality reading unit read the abnormality, and when the voltage abnormality reading unit reads the new energy battery pack and the humidity data of the periphery abnormality of the new energy battery pack, the above patent solves the control problem of new energy automobile equipment, but has the following problems in actual operation:
1. when current in the bidirectional direct current power supply is acquired, the efficiency of acquiring the electric signal is reduced due to instability in current data conversion.
2. The existing current and the standard current are not accurately compared and detected according to the current conditions of different devices, so that the current data is directly detected under the imperfect condition to cause data abnormality.
3. The most important of the new energy automobiles is the performance analysis of the battery, and the performance of the battery is not good enough due to the temperature in the prior art, so that the new energy automobiles cannot normally run.
Disclosure of Invention
The invention aims to provide a high-precision bidirectional direct current power supply for electric control test of a new energy automobile, parameters in a power supply element are set according to peak power of multi-wave mixing of current signals, so that the success rate and reliability of an electric signal in conversion can be further ensured, the working efficiency and stability are further improved, the parameter data and standard parameter data are subjected to overlapping comparison through a parameter curve library, the current parameters of different types of equipment can be effectively improved to perform threshold comparison, the current data of each equipment can be subjected to unqualified data investigation, the reliability of the data is enhanced, abnormal data with a temperature calculation threshold value not within a standard threshold value is displayed at a terminal, a driver can timely know the abnormal data of a battery and perform timely control operation, and the problems in the prior art can be solved.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a high accuracy two-way DC power supply for automatically controlled test of new energy automobile includes:
the bidirectional direct current power supply data acquisition unit is used for:
acquiring voltage data in different power supply elements, converting the voltage data into a bidirectional direct current power supply through a rectifier after the voltage data are acquired, and converting the bidirectional direct current power supply into electric signal data through multi-wave mixing;
the voltage data comprises constant voltage data, constant current data and constant power data, meanwhile, parameters of voltage, current and power are obtained, different parameters are protected, and the electric signal data comprises battery data and control data;
the feedback channel processing unit is used for:
transmitting the electric signal data to an electric control detection system through a fixed communication channel, wherein the electric control detection system is a system carried on the vehicle;
a data control detection unit for:
based on the electric signal data transmitted in the feedback channel processing unit, respectively acquiring battery data and control data in the electric signal data;
classifying and analyzing the battery data, and evaluating the service condition of the battery according to the analysis result;
Respectively performing control analysis on the data of different types of functions in the control data;
a control power supply protection unit for:
based on the analysis results of the battery data and the control data in the data control detection unit, respectively controlling and protecting the data with different functions according to the unused analysis results;
the bidirectional direct current power supply data acquisition unit comprises:
the bidirectional direct current power supply conversion module is used for:
converting direct current power supply data in the bidirectional direct current power supply into a current signal;
dividing the current signal into a plurality of sub-signal waves and detecting the power and wavelength of each sub-signal wave;
selecting an adapted phase matching factor based on the phase change condition of each sub-signal wave;
calculating peak power of multi-wave mixing of the current signal according to the multi-wave mixing efficiency of the current signal and the power of each sub-signal wave;
setting parameters in the power supply element according to peak power of multi-wave mixing of the current signals;
the current signal is converted into electrical signal data according to the set parameters.
Preferably, the bidirectional direct current power supply data acquisition unit further includes:
the parameter protection decision module is used for:
acquiring parameter data in the power supply element, and acquiring electric signal data after the data acquisition is completed;
Importing the parameter data and the standard parameter data into a parameter curve library, wherein the parameter curve library has a function in a database;
after the parameter data and the standard parameter data are imported, the parameter curve library performs overlapping comparison on the parameter data and the standard parameter data;
if the comparison threshold value of the parameter data and the standard parameter data is in a controllable range, the data is qualified data;
if the comparison threshold value of the parameter data and the standard parameter data is in an uncontrollable range, the data is unqualified data;
and meanwhile, transmitting the qualified data, transmitting the unqualified data in the direction, and converting again.
Preferably, the feedback channel processing unit includes:
the configuration parameter acquisition module is used for acquiring the overall number of the communication channels, and scanning the configuration parameters aiming at each communication channel to acquire the configuration parameters corresponding to each communication channel;
the first time interval acquisition module is used for acquiring a data acquisition time interval of battery data as a first acquisition time interval;
the second time interval acquisition module is used for acquiring a data acquisition time interval of control data as a second acquisition time interval;
The unit time setting module is used for setting the unit time of communication transmission according to the first acquisition time interval and the second acquisition time interval; the unit time is the least common multiple of the first acquisition time interval and the second acquisition time interval; if the first acquisition time interval is the same as the second acquisition time interval, the unit time is 8-10 first acquisition time intervals or second acquisition time intervals;
the initial fixed channel number acquisition module is used for monitoring the corresponding battery data acquisition amount and control data acquisition amount in the unit time in real time, and setting the initial fixed channel number according to the configuration parameters of the communication channels combined by the battery data acquisition amount and the control data acquisition amount; the initial fixed channel number is obtained through the following formula:
wherein N represents the number of initial fixed channels, and N is an upward rounding; c (C) 01 And C 02 The average data quantity of the battery data collection quantity and the control data collection quantity in unit time is represented; c (C) 0i Representing the saturation capacity corresponding to the ith communication channel; n represents the total number of communication channels; n (N) 0 Represents the reference number N 0 The value of (2); c (C) 0max And C 0min Representing the maximum and minimum saturated capacity values in the n communication channels, respectively;
the initial fixed channel acquisition module is used for extracting the communication channels according to the number of the initial fixed channels to serve as initial fixed channels; and the channel judging module is used for carrying out data transmission by utilizing the initial fixed channel, monitoring the channel operation parameters of the initial fixed channel in real time, and judging whether the fixed communication channel needs to be added according to the channel operation parameters of the initial fixed channel.
Preferably, the channel determination module includes:
the channel operation parameter detection module is used for carrying out data transmission on the initial fixed channel and monitoring the channel operation parameters of the initial fixed channel in real time;
the communication quality parameter acquisition module is used for acquiring the overall communication quality parameter of the current initial fixed channel according to the channel operation parameter; wherein the communication quality parameter is obtained by the following formula:
wherein U represents a communication quality parameter; n represents the total number of communication channels; c (C) 1ij Representing the data volume corresponding to the battery data acquisition volume actually passed by the communication channel in the jth unit time of the ith communication channel; c (C) 2ij Representing the data volume corresponding to the control data acquisition volume actually passed by the communication channel in the jth unit time of the ith communication channel; c (C) 0i Representing the saturation capacity corresponding to the ith communication channel; m represents the number of unit time currently experienced; c (C) 1ij-1 Representing the data quantity corresponding to the battery data acquisition quantity actually passed by the communication channel in the j-1 unit time of the ith communication channel; c (C) 2ij-1 The j-1 unit time of the ith communication channel is represented, and the data quantity corresponding to the control data acquisition quantity actually passed by the communication channel is represented;
the increase judging module is configured to compare the communication quality parameter with a preset communication quality parameter threshold, and judge that an increase of the number of fixed communication channels is required when the communication quality parameter is lower than the preset communication quality parameter threshold and the duration of continuous lower than the preset communication quality parameter exceeds a preset time threshold, where the number of fixed communication channels is increased according to the following principle: and when the number of the fixed communication channels is required to be increased once, 1 fixed communication channel is increased.
Preferably, the data control detection unit includes:
the battery data analysis module is used for:
Acquiring temperature data of a battery according to an acquisition result of the battery data in the electric signal data;
determining according to the temperature data of the automobile battery when the automobile battery works and the temperature data of the automobile battery when the automobile battery does not work;
respectively carrying out threshold calculation on the temperature data in working and the temperature data in non-working and the standard temperature data;
if the calculated threshold value is not within the standard threshold value, the data are abnormal data, and the data are displayed abnormally on the display terminal;
if the calculated threshold value is within the standard threshold value, acquiring the discharging time of the battery;
and discharging the battery with constant current according to the discharging moment until the voltage value of the leased battery reaches the cut-off voltage, so as to obtain the operation data of the battery.
Preferably, the battery data analysis module is further configured to:
according to the obtained operation data of the battery, clustering the operation data with standard operation data to obtain voltage data and capacitance data of the battery after clustering;
acquiring target values of the voltage data and the capacitance data;
performing curve processing on the target values of the voltage data and the capacitance data;
and obtaining a voltage change curve and a capacitance change curve of the voltage data and the capacitance data according to the curve processing result.
Preferably, the battery data analysis module is further configured to:
determining the total voltage change value of the battery from the discharging moment to the cut-off voltage according to the voltage change curve;
meanwhile, determining the total capacitance change value of the battery from the discharging moment to the cut-off voltage according to the capacitance change curve;
determining the weight values of the voltage change value and the capacitance change value, and evaluating the performance of the battery according to the weight values;
the method comprises the steps of firstly acquiring standard data of battery performance, acquiring battery performance data acquired according to weight values, comparing the battery performance standard data with the battery performance data acquired by the weight values, performing performance evaluation according to a difference value of the comparison data after the comparison is completed, and displaying an evaluation value on a display terminal;
when the difference value is within the preset value range, the battery is a usable battery;
when the difference is not within the preset range, the battery is not usable.
Preferably, the data control detection unit further includes:
the control data analysis module is used for:
acquiring acquisition results of the data of each control device according to the electric signal data;
acquiring panel control data, communication control data, external control data and default data in the data;
Acquiring operation parameter data in the panel control data, judging whether the panel parameters are in a normal state according to the operation records, and stopping or resetting if the panel parameters are in an abnormal state;
acquiring software operation data and communication instruction parameter data in the communication control data, judging whether the communication control data is in a normal state according to the operation record, and stopping or resetting if the communication control data is in an abnormal state;
acquiring power supply current and voltage data in external control data, judging whether the external control data is in a normal state according to the power supply current and the voltage, and stopping, resetting or adjusting if the external control data is in an abnormal state;
and acquiring the power supply data of different operation equipment terminals in the default data, judging whether the default data is in a normal state according to the power supply data, and if the default data is in an abnormal state, performing instruction operation.
Preferably, the control power supply protection unit is configured to:
acquiring a plurality of device data with power sources in the electric signal data, wherein when the power source device displays an abnormal alarm on a display terminal, emergency stop operation is performed on the terminal, and the power source output can be stopped in an emergency after the emergency stop;
Acquiring data of an input port, an output overcurrent port, an output overvoltage port and a power device overtemperature port in power equipment, and when the data of the input port, the output overcurrent port, the output overvoltage port and the power device overtemperature port display abnormal alarms on a display terminal, a driver can call detailed data information on the terminal;
the voltage value of the power supply equipment after stopping for 10 seconds is obtained, when the voltage value of the output end of the power supply equipment is reduced to a safe voltage, the power supply equipment is in a normal state, and the voltage drop generated on the connection line of the power supply equipment and the equipment is automatically compensated through an automatic compensation voltage terminal.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the high-precision bidirectional direct current power supply for the electric control test of the new energy automobile, the peak power of the multi-wave mixing of the current signal is calculated according to the multi-wave mixing efficiency of the current signal and the power of each sub-signal wave, so that the stability of the electric signal during conversion can be improved, the working efficiency of conversion is also improved, meanwhile, the parameters in the power supply element are set according to the peak power of the multi-wave mixing of the current signal, the success rate and the reliability of the electric signal during conversion can be further ensured, the working efficiency and the stability are further improved, and the parameter data and the standard parameter data are subjected to overlapping comparison through the parameter curve library; if the comparison threshold value of the parameter data and the standard parameter data is in a controllable range, the data is qualified data; if the comparison threshold value of the parameter data and the standard parameter data is in an uncontrollable range, the data is unqualified data, so that the threshold value comparison of the current parameters of different types of equipment is effectively improved, the current data of each equipment can be used for checking the unqualified data, and the reliability of the data is enhanced.
2. According to the high-precision bidirectional direct current power supply for the electric control test of the new energy automobile, through determining the temperature data of the automobile battery during operation and the temperature data of the automobile battery during non-operation, whether the temperature of the battery affects the battery or not can be timely found, abnormal data of which the temperature calculation threshold value is not in the standard threshold value is displayed on the terminal, a driver can timely know the abnormal data of the battery and perform timely control operation, the operation data of the battery and the standard operation data are clustered, voltage data and capacitance data of the battery are obtained after the clustering, the battery can be effectively controlled according to the curve processing result of the voltage data and the target value of the capacitance data, the service life of the battery is prolonged, meanwhile, the battery performance standard data and the battery performance data acquired by the weight value are subjected to data comparison, after the comparison is completed, performance evaluation is performed according to the difference value of the comparison data, whether the battery performance data can be timely combined, so that whether the battery can be normally used or not can be judged, manual inspection is not needed, manpower is reduced, and if the panel control data, communication control data and default control data can be timely obtained, and the control data can be normally used according to the normal operation state.
3. According to the high-precision bidirectional direct current power supply for the electric control test of the new energy automobile, when the power supply equipment displays abnormality on the display terminal, the input port and the output overcurrent port in the power supply equipment are abnormal, and the voltage value is abnormal after the power supply equipment stops working for 10 seconds, the terminal can automatically perform emergency stop after being controlled, so that the running safety of the new energy automobile is improved, and meanwhile, the voltage drop generated on the connection between the power supply equipment and the equipment is automatically compensated through the automatic voltage compensation terminal, and the voltage stability during running of the automobile is improved.
Drawings
FIG. 1 is a schematic diagram of the module principle of the high-precision bidirectional DC power supply of the present invention;
FIG. 2 is a schematic diagram of a bidirectional DC power supply data acquisition unit module according to the present invention;
fig. 3 is a schematic diagram of a data control detection unit module according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the problem of the prior art that the electrical signal acquisition efficiency is reduced due to the instability in the current data conversion when acquiring the current in the bidirectional direct current power supply, referring to fig. 1 and 2, the present embodiment provides the following technical scheme:
a high accuracy two-way DC power supply for automatically controlled test of new energy automobile includes: the bidirectional direct current power supply data acquisition unit is used for: acquiring voltage data in different power supply elements, converting the voltage data into a bidirectional direct current power supply through a rectifier after the voltage data are acquired, and converting the bidirectional direct current power supply into electric signal data through multi-wave mixing; the voltage data comprises constant voltage data, constant current data and constant power data, meanwhile, parameters of voltage, current and power are obtained, different parameters are protected, and the electric signal data comprises battery data and control data; the feedback channel processing unit is used for: transmitting the electric signal data to an electric control detection system through a fixed communication channel, wherein the electric control detection system is a system carried on the vehicle; a data control detection unit for: based on the electric signal data transmitted in the feedback channel processing unit, respectively acquiring battery data and control data in the electric signal data; classifying and analyzing the battery data, and evaluating the service condition of the battery according to the analysis result; respectively performing control analysis on the data of different types of functions in the control data; a control power supply protection unit for: based on the analysis results of the battery data and the control data in the data control detection unit, the data with different functions are respectively controlled and protected according to the unused analysis results.
The two-way DC power supply data acquisition unit includes: the bidirectional direct current power supply conversion module is used for: converting direct current power supply data in the bidirectional direct current power supply into a current signal; dividing the current signal into a plurality of sub-signal waves and detecting the power and wavelength of each sub-signal wave; selecting an adapted phase matching factor based on the phase change condition of each sub-signal wave; calculating peak power of multi-wave mixing of the current signal according to the multi-wave mixing efficiency of the current signal and the power of each sub-signal wave; setting parameters in the power supply element according to peak power of multi-wave mixing of the current signals; the current signal is converted into electrical signal data according to the set parameters.
Specifically, the peak power of the multi-wave mixing of the current signal is calculated according to the multi-wave mixing efficiency of the current signal and the power of each sub-signal wave, so that the stability of the electric signal during conversion can be improved, the working efficiency of conversion is also improved, meanwhile, the parameters in the power supply element are set according to the peak power of the multi-wave mixing of the current signal, the success rate and the reliability of the electric signal during conversion can be further ensured, and the working efficiency and the stability are further improved.
In order to solve the problem that in the prior art, when an electric signal is acquired, the existing current and the standard current are not accurately compared and detected according to the current conditions of different devices, so that the current data is directly detected under the imperfect condition to cause data abnormality, please refer to fig. 1 and 2, the embodiment provides the following technical scheme:
the bidirectional direct current power supply data acquisition unit further comprises: the parameter protection decision module is used for: acquiring parameter data in the power supply element, and acquiring electric signal data after the data acquisition is completed; importing the parameter data and the standard parameter data into a parameter curve library, wherein the parameter curve library has a function in a database; after the parameter data and the standard parameter data are imported, the parameter curve library performs overlapping comparison on the parameter data and the standard parameter data; if the comparison threshold value of the parameter data and the standard parameter data is in a controllable range, the data is qualified data; if the comparison threshold value of the parameter data and the standard parameter data is in an uncontrollable range, the data is unqualified data; and meanwhile, transmitting the qualified data, transmitting the unqualified data in the direction, and converting again.
Specifically, the parameter data and the standard parameter data are overlapped and compared through a parameter curve library; if the comparison threshold value of the parameter data and the standard parameter data is in a controllable range, the data is qualified data; if the comparison threshold value of the parameter data and the standard parameter data is in an uncontrollable range, the data is unqualified data, so that the threshold value comparison of the current parameters of different types of equipment is effectively improved, the current data of each equipment can be used for checking the unqualified data, and the reliability of the data is enhanced.
In order to solve the problem that in the prior art, the performance of the battery is not good enough and the battery performance is poor due to the temperature, so that the new energy automobile cannot normally run due to incomplete battery data acquisition, referring to fig. 3, the embodiment provides the following technical scheme:
the feedback channel processing unit includes:
the configuration parameter acquisition module is used for acquiring the overall number of the communication channels, and scanning the configuration parameters aiming at each communication channel to acquire the configuration parameters corresponding to each communication channel;
the first time interval acquisition module is used for acquiring a data acquisition time interval of battery data as a first acquisition time interval;
The second time interval acquisition module is used for acquiring a data acquisition time interval of control data as a second acquisition time interval;
the unit time setting module is used for setting the unit time of communication transmission according to the first acquisition time interval and the second acquisition time interval; the unit time is the least common multiple of the first acquisition time interval and the second acquisition time interval; if the first acquisition time interval is the same as the second acquisition time interval, the unit time is 8-10 first acquisition time intervals or second acquisition time intervals;
the initial fixed channel number acquisition module is used for monitoring the corresponding battery data acquisition amount and control data acquisition amount in the unit time in real time, and setting the initial fixed channel number according to the configuration parameters of the communication channels combined by the battery data acquisition amount and the control data acquisition amount; the initial fixed channel number is obtained through the following formula:
wherein N represents the number of initial fixed channels, and N is an upward rounding; c (C) 01 And C 02 The average data quantity of the battery data collection quantity and the control data collection quantity in unit time is represented; c (C) 0i Representing the saturation capacity corresponding to the ith communication channel; n represents the total number of communication channels; n (N) 0 Represents the reference number N 0 The value of (2); c (C) 0max And C 0min Representing the maximum and minimum saturated capacity values in the n communication channels, respectively;
the initial fixed channel acquisition module is used for extracting the communication channels according to the number of the initial fixed channels to serve as initial fixed channels; and the channel judging module is used for carrying out data transmission by utilizing the initial fixed channel, monitoring the channel operation parameters of the initial fixed channel in real time, and judging whether the fixed communication channel needs to be added according to the channel operation parameters of the initial fixed channel.
The technical scheme has the effects that: the configuration parameter acquisition module is used for acquiring the overall number of the communication channels and scanning the configuration parameters of each communication channel to acquire the configuration parameters of each communication channel. This ensures that the system has the correct communication channel configuration to meet the specific requirements.
The first time interval acquisition module and the second time interval acquisition module are used for acquiring data acquisition time intervals of battery data and control data. By the time interval at which the data is acquired, the frequency and accuracy of the data acquisition can be determined.
The unit time setting module sets the unit time of communication transmission according to the first acquisition time interval and the second acquisition time interval. The unit time is the least common multiple of the first acquisition time interval and the second acquisition time interval or, if they are the same, 8-10 first acquisition time intervals or second acquisition time intervals. By setting the unit time, the communication transmission can be time-scheduled and synchronized.
The initial fixed channel number acquisition module monitors the battery data acquisition amount and the control data acquisition amount in unit time in real time, and sets the initial fixed channel number according to the data amount and configuration parameters of the communication channels. This allows the allocation and utilization of channel resources to be optimized according to the actual data volume requirements and the communication channel capacity.
The initial fixed channel acquisition module extracts the communication channels according to the number of the initial fixed channels to serve as initial fixed channels. This ensures that the system has a certain number of channels available at the start of the data transmission.
The channel judging module utilizes the initial fixed channel to carry out data transmission and monitors the channel operation parameters of the initial fixed channel in real time. Based on the channel operating parameters of the initial fixed channel, it can be determined whether the fixed communication channel needs to be added. Thus, the communication channel can be dynamically adjusted according to the real-time situation so as to meet the communication requirement and improve the system performance.
The system can acquire the current data load condition in real time by monitoring the battery data acquisition quantity and controlling the data acquisition quantity in unit time. This allows the configuration of the communication channel to be determined based on the actual data volume requirements. The saturated capacity of each communication channel represents the maximum amount of data that the channel can carry per unit time. By comparing the actual data volume with the saturation capacity of the communication channel, the utilization of each channel can be evaluated. According to the real-time monitored data quantity and the communication channel capacity evaluation, the initial fixed channel number can be set by combining the reference number. A value of 2 for the reference number means that the initial fixed channel number will be at least 2. By monitoring the data quantity and the capacity evaluation of the communication channels in real time, the system can dynamically adjust the number of the channels based on the number of the initial fixed channels according to the requirements and the consideration of performance optimization. If the actual data volume exceeds the capacity of the current fixed channel, the number of fixed communication channels may be increased to meet the demand. Therefore, the data volume in unit time is obtained, the communication channel capacity is estimated, and the initial fixed channel number is set according to the information, so that the communication resources can be reasonably allocated on the basis of real-time monitoring and dynamic adjustment, the data transmission requirement is met, and the performance and the efficiency of the system are improved.
Specifically, the channel determination module includes:
the channel operation parameter detection module is used for carrying out data transmission on the initial fixed channel and monitoring the channel operation parameters of the initial fixed channel in real time;
the communication quality parameter acquisition module is used for acquiring the overall communication quality parameter of the current initial fixed channel according to the channel operation parameter; wherein the communication quality parameter is obtained by the following formula:
wherein U represents a communication quality parameter; n represents the total number of communication channels; c (C) 1ij Representing the data volume corresponding to the battery data acquisition volume actually passed by the communication channel in the jth unit time of the ith communication channel; c (C) 2ij Representing the data volume corresponding to the control data acquisition volume actually passed by the communication channel in the jth unit time of the ith communication channel; c (C) 0i Representing the saturation capacity corresponding to the ith communication channel; m represents the number of unit time currently experienced; c (C) 1ij-1 Representing the data quantity corresponding to the battery data acquisition quantity actually passed by the communication channel in the j-1 unit time of the ith communication channel; c (C) 2ij-1 The j-1 unit time of the ith communication channel is represented, and the data quantity corresponding to the control data acquisition quantity actually passed by the communication channel is represented;
The increase judging module is configured to compare the communication quality parameter with a preset communication quality parameter threshold, and judge that an increase of the number of fixed communication channels is required when the communication quality parameter is lower than the preset communication quality parameter threshold and the duration of continuous lower than the preset communication quality parameter exceeds a preset time threshold, where the number of fixed communication channels is increased according to the following principle: and when the number of the fixed communication channels is required to be increased once, 1 fixed communication channel is increased.
The technical scheme has the effects that: the channel operation parameter monitoring module is used for monitoring the channel operation parameters of the initial fixed channel in real time. By monitoring the operating parameters of the channel, information about the channel performance and status can be obtained for subsequent analysis and determination.
The communication quality parameter acquisition module calculates the overall communication quality parameter of the current initial fixed channel according to the channel operation parameter. Meanwhile, the communication quality parameters are calculated by a formula, taking into account the actual data transmission amount of each communication channel, the saturation capacity of the communication channel and the number of unit time elapsed. This allows the overall communication quality level of the initial fixed channel to be quantified.
The increase determination module is used for comparing the communication quality parameter with a preset communication quality parameter threshold. If the communication quality parameter is lower than a preset communication quality parameter threshold and continuously lower than a preset time threshold, the number of fixed communication channels is judged to need to be increased. The principle of adding fixed communication channels is to add 1 fixed communication channel each time it is determined that an increase is required.
The channel operation parameters of the initial fixed channels are monitored in real time through the channel operation parameter detection module, the communication quality parameters are calculated by combining the communication quality parameter acquisition module, and whether the number of the fixed communication channels is required to be increased or not is judged through the increase judgment module according to a preset threshold value, so that the dynamic adjustment and optimization of the communication quality can be realized. Meanwhile, the communication performance and stability of the system can be improved, and the quality and reliability of data transmission are ensured.
On the other hand, the communication quality is quantized: by using the above elements, the overall communication quality parameter of the initial fixed channel can be calculated and quantized. The communication quality parameter is calculated by a formula that takes into account the actual data transmission amount per communication channel, the saturation capacity of the communication channel, and the number of unit times that have elapsed. By calculating the communication quality parameter, the communication quality can be converted into a measurable numerical index. By acquiring the actual data transmission amount of the communication channel in each unit time, the data transmission condition of the channel can be monitored in real time. Thus, the change or abnormal condition of the communication quality can be detected rapidly. The saturated capacity of each communication channel represents the maximum amount of data that the channel can carry per unit time. By comparing the actual data transmission amount with the saturated capacity, the utilization and performance of the communication channel can be evaluated. By monitoring and calculating the communication quality parameters in real time, the dynamic adjustment and optimization can be performed according to the actual situation. If the communication quality parameter is lower than the preset threshold, corresponding measures such as increasing the number of fixed communication channels, adjusting the data transmission strategy and the like can be taken to improve the communication quality and the system performance.
The data control detection unit includes: the battery data analysis module is used for: acquiring temperature data of a battery according to an acquisition result of the battery data in the electric signal data; determining according to the temperature data of the automobile battery when the automobile battery works and the temperature data of the automobile battery when the automobile battery does not work; respectively carrying out threshold calculation on the temperature data in working and the temperature data in non-working and the standard temperature data; if the calculated threshold value is not within the standard threshold value, the data are abnormal data, and the data are displayed abnormally on the display terminal; if the calculated threshold value is within the standard threshold value, acquiring the discharging time of the battery; and discharging the battery with constant current according to the discharging moment until the voltage value of the leased battery reaches the cut-off voltage to obtain the operation data of the battery, wherein the battery data analysis module is further used for: according to the obtained operation data of the battery, clustering the operation data with standard operation data to obtain voltage data and capacitance data of the battery after clustering; acquiring target values of the voltage data and the capacitance data; performing curve processing on the target values of the voltage data and the capacitance data; and obtaining a voltage change curve and a capacitance change curve of the voltage data and the capacitance data according to the curve processing result, wherein the battery data analysis module is further used for: determining the total voltage change value of the battery from the discharging moment to the cut-off voltage according to the voltage change curve; meanwhile, determining the total capacitance change value of the battery from the discharging moment to the cut-off voltage according to the capacitance change curve; determining the weight values of the voltage change value and the capacitance change value, and evaluating the performance of the battery according to the weight values; the method comprises the steps of firstly acquiring standard data of battery performance, acquiring battery performance data acquired according to weight values, comparing the battery performance standard data with the battery performance data acquired by the weight values, performing performance evaluation according to a difference value of the comparison data after the comparison is completed, and displaying an evaluation value on a display terminal; when the difference value is within the preset value range, the battery is a usable battery; when the difference is not within the preset range, the battery is not usable.
Specifically, through determining the temperature data of the automobile battery during operation and the temperature data of the automobile battery during non-operation, whether the temperature of the battery affects the battery or not can be timely found, abnormal data of which the temperature calculation threshold is not in the standard threshold is displayed on the terminal, a driver can timely know abnormal data of the battery and conduct timely control operation, operation data of the battery and the standard operation data are clustered, voltage data and capacitance data of the battery are obtained after the clustering, effective voltage and capacitance control can be conducted on the battery according to a result of curve processing of target values of the voltage data and the capacitance data, service life of the battery is prolonged, meanwhile, performance evaluation is conducted on battery performance data obtained by the battery performance standard data and the weight value according to a difference value of the comparison data, whether the battery performance data can be combined or not can be timely found through performance detection of the battery, and therefore whether the battery can be normally used or not is judged without manual inspection, and manpower is reduced.
In order to solve the problem that in the prior art, a plurality of control devices in a new energy automobile do not perform finer data acquisition, so that the control devices cannot perform control operation, referring to fig. 3, the present embodiment provides the following technical scheme:
The data control detection unit further includes: the control data analysis module is used for: acquiring acquisition results of the data of each control device according to the electric signal data; acquiring panel control data, communication control data, external control data and default data in the data; acquiring operation parameter data in the panel control data, judging whether the panel parameters are in a normal state according to the operation records, and stopping or resetting if the panel parameters are in an abnormal state; acquiring software operation data and communication instruction parameter data in the communication control data, judging whether the communication control data is in a normal state according to the operation record, and stopping or resetting if the communication control data is in an abnormal state; acquiring power supply current and voltage data in external control data, judging whether the external control data is in a normal state according to the power supply current and the voltage, and stopping, resetting or adjusting if the external control data is in an abnormal state; and acquiring the power supply data of different operation equipment terminals in the default data, judging whether the default data is in a normal state according to the power supply data, and if the default data is in an abnormal state, performing instruction operation.
Specifically, by acquiring the panel control data, the communication control data, the external control data and the default data, whether the panel control data, the communication control data, the external control data and the default data are in a normal state or not can be judged, and if the panel control data, the communication control data, the external control data and the default data are in an abnormal state, the control operation can be timely performed.
In order to solve the problem that in the prior art, when a power supply device is abnormal, automatic control adjustment is not performed on the abnormal device in time, so that the safety of a new energy automobile is reduced, referring to fig. 1, the following technical scheme is provided in this embodiment:
a control power supply protection unit for: acquiring a plurality of device data with power sources in the electric signal data, wherein when the power source device displays an abnormal alarm on a display terminal, emergency stop operation is performed on the terminal, and the power source output can be stopped in an emergency after the emergency stop; acquiring data of an input port, an output overcurrent port, an output overvoltage port and a power device overtemperature port in power equipment, and when the data of the input port, the output overcurrent port, the output overvoltage port and the power device overtemperature port display abnormal alarms on a display terminal, a driver can call detailed data information on the terminal; the voltage value of the power supply equipment after stopping for 10 seconds is obtained, when the voltage value of the output end of the power supply equipment is reduced to a safe voltage, the power supply equipment is in a normal state, and the voltage drop generated on the connection line of the power supply equipment and the equipment is automatically compensated through an automatic compensation voltage terminal.
Specifically, when the power supply device displays abnormality on the display terminal, the data of the input port and the output overcurrent port in the power supply device are abnormal, and the voltage value is abnormal after the power supply device stops working for 10 seconds, the terminal can automatically stop in an emergency mode after being controlled, so that the running safety of a new energy vehicle is improved, and meanwhile, the voltage drop generated on the connection between the power supply device and the device is automatically compensated through the automatic compensation voltage terminal, and the voltage stability during running of the vehicle is improved.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A high accuracy two-way DC power supply for automatically controlled test of new energy automobile, its characterized in that includes:
the bidirectional direct current power supply data acquisition unit is used for:
acquiring voltage data in different power supply elements, converting the voltage data into a bidirectional direct current power supply through a rectifier after the voltage data are acquired, and converting the bidirectional direct current power supply into electric signal data through multi-wave mixing;
the voltage data comprises constant voltage data, constant current data and constant power data, meanwhile, parameters of voltage, current and power are obtained, different parameters are protected, and the electric signal data comprises battery data and control data;
the feedback channel processing unit is used for:
transmitting the electric signal data to an electric control detection system through a fixed communication channel, wherein the electric control detection system is a system carried on the vehicle;
a data control detection unit for:
based on the electric signal data transmitted in the feedback channel processing unit, respectively acquiring battery data and control data in the electric signal data;
classifying and analyzing the battery data, and evaluating the service condition of the battery according to the analysis result;
respectively performing control analysis on the data of different types of functions in the control data;
A control power supply protection unit for:
based on the analysis results of the battery data and the control data in the data control detection unit, respectively controlling and protecting the data with different functions according to the unused analysis results;
the bidirectional direct current power supply data acquisition unit comprises:
the bidirectional direct current power supply conversion module is used for:
converting direct current power supply data in the bidirectional direct current power supply into a current signal;
dividing the current signal into a plurality of sub-signal waves and detecting the power and wavelength of each sub-signal wave;
selecting an adapted phase matching factor based on the phase change condition of each sub-signal wave;
calculating peak power of multi-wave mixing of the current signal according to the multi-wave mixing efficiency of the current signal and the power of each sub-signal wave;
setting parameters in the power supply element according to peak power of multi-wave mixing of the current signals;
the current signal is converted into electrical signal data according to the set parameters.
2. The high-precision bidirectional direct current power supply for electric control testing of new energy automobiles according to claim 1, wherein the high-precision bidirectional direct current power supply is characterized in that: the bidirectional direct current power supply data acquisition unit further comprises:
the parameter protection decision module is used for:
acquiring parameter data in the power supply element, and acquiring electric signal data after the data acquisition is completed;
Importing the parameter data and the standard parameter data into a parameter curve library, wherein the parameter curve library has a function in a database;
after the parameter data and the standard parameter data are imported, the parameter curve library performs overlapping comparison on the parameter data and the standard parameter data;
if the comparison threshold value of the parameter data and the standard parameter data is in a controllable range, the data is qualified data;
if the comparison threshold value of the parameter data and the standard parameter data is in an uncontrollable range, the data is unqualified data;
and meanwhile, transmitting the qualified data, transmitting the unqualified data in the direction, and converting again.
3. The high-precision bidirectional direct current power supply for electric control testing of new energy automobiles according to claim 1, wherein the high-precision bidirectional direct current power supply is characterized in that: the feedback channel processing unit includes:
the configuration parameter acquisition module is used for acquiring the overall number of the communication channels, and scanning the configuration parameters aiming at each communication channel to acquire the configuration parameters corresponding to each communication channel;
the first time interval acquisition module is used for acquiring a data acquisition time interval of battery data as a first acquisition time interval;
the second time interval acquisition module is used for acquiring a data acquisition time interval of control data as a second acquisition time interval;
The unit time setting module is used for setting the unit time of communication transmission according to the first acquisition time interval and the second acquisition time interval; the unit time is the least common multiple of the first acquisition time interval and the second acquisition time interval; if the first acquisition time interval is the same as the second acquisition time interval, the unit time is 8-10 first acquisition time intervals or second acquisition time intervals;
the initial fixed channel number acquisition module is used for monitoring the corresponding battery data acquisition amount and control data acquisition amount in the unit time in real time, and setting the initial fixed channel number according to the configuration parameters of the communication channels combined by the battery data acquisition amount and the control data acquisition amount; the initial fixed channel number is obtained through the following formula:
wherein N represents the number of initial fixed channels, and N is an upward rounding; c (C) 01 And C 02 The average data quantity of the battery data collection quantity and the control data collection quantity in unit time is represented; c (C) 0i Representing the saturation capacity corresponding to the ith communication channel; n represents the total number of communication channels; n (N) 0 Represents the reference number N 0 The value of (2); c (C) 0max And C 0min Representing the maximum and minimum saturated capacity values in the n communication channels, respectively;
the initial fixed channel acquisition module is used for extracting the communication channels according to the number of the initial fixed channels to serve as initial fixed channels; and the channel judging module is used for carrying out data transmission by utilizing the initial fixed channel, monitoring the channel operation parameters of the initial fixed channel in real time, and judging whether the fixed communication channel needs to be added according to the channel operation parameters of the initial fixed channel.
4. The high-precision bidirectional direct current power supply for electric control testing of new energy automobiles according to claim 3, wherein the high-precision bidirectional direct current power supply is characterized in that: the channel determination module includes:
the channel operation parameter detection module is used for carrying out data transmission on the initial fixed channel and monitoring the channel operation parameters of the initial fixed channel in real time;
the communication quality parameter acquisition module is used for acquiring the overall communication quality parameter of the current initial fixed channel according to the channel operation parameter; wherein the communication quality parameter is obtained by the following formula:
wherein U represents a communication quality parameter; n represents the total number of communication channels; c (C) 1ij Representing the data volume corresponding to the battery data acquisition volume actually passed by the communication channel in the jth unit time of the ith communication channel; c (C) 2ij Representing the data volume corresponding to the control data acquisition volume actually passed by the communication channel in the jth unit time of the ith communication channel; c (C) 0i Representing the saturation capacity corresponding to the ith communication channel; m represents the number of unit time currently experienced; c (C) 1ij-1 Representing the data quantity corresponding to the battery data acquisition quantity actually passed by the communication channel in the j-1 unit time of the ith communication channel; c (C) 2ij-1 The j-1 unit time of the ith communication channel is represented, and the data quantity corresponding to the control data acquisition quantity actually passed by the communication channel is represented;
the increase judging module is configured to compare the communication quality parameter with a preset communication quality parameter threshold, and judge that an increase of the number of fixed communication channels is required when the communication quality parameter is lower than the preset communication quality parameter threshold and the duration of continuous lower than the preset communication quality parameter exceeds a preset time threshold, where the number of fixed communication channels is increased according to the following principle: and when the number of the fixed communication channels is required to be increased once, 1 fixed communication channel is increased.
5. The high-precision bidirectional direct current power supply for electric control testing of new energy automobiles according to claim 1, wherein the high-precision bidirectional direct current power supply is characterized in that: the data control detection unit includes:
The battery data analysis module is used for:
acquiring temperature data of a battery according to an acquisition result of the battery data in the electric signal data;
determining according to the temperature data of the automobile battery when the automobile battery works and the temperature data of the automobile battery when the automobile battery does not work;
respectively carrying out threshold calculation on the temperature data in working and the temperature data in non-working and the standard temperature data;
if the calculated threshold value is not within the standard threshold value, the data are abnormal data, and the data are displayed abnormally on the display terminal;
if the calculated threshold value is within the standard threshold value, acquiring the discharging time of the battery;
and discharging the battery with constant current according to the discharging moment until the voltage value of the leased battery reaches the cut-off voltage, so as to obtain the operation data of the battery.
6. The high-precision bidirectional direct current power supply for electric control testing of a new energy automobile according to claim 5, wherein the high-precision bidirectional direct current power supply is characterized in that: the battery data analysis module is further configured to:
according to the obtained operation data of the battery, clustering the operation data with standard operation data to obtain voltage data and capacitance data of the battery after clustering;
acquiring target values of the voltage data and the capacitance data;
Performing curve processing on the target values of the voltage data and the capacitance data;
and obtaining a voltage change curve and a capacitance change curve of the voltage data and the capacitance data according to the curve processing result.
7. The high-precision bidirectional direct current power supply for electric control testing of a new energy automobile according to claim 6, wherein the high-precision bidirectional direct current power supply is characterized in that: the battery data analysis module is further configured to:
determining the total voltage change value of the battery from the discharging moment to the cut-off voltage according to the voltage change curve;
meanwhile, determining the total capacitance change value of the battery from the discharging moment to the cut-off voltage according to the capacitance change curve;
determining the weight values of the voltage change value and the capacitance change value, and evaluating the performance of the battery according to the weight values;
the method comprises the steps of firstly acquiring standard data of battery performance, acquiring battery performance data acquired according to weight values, comparing the battery performance standard data with the battery performance data acquired by the weight values, performing performance evaluation according to a difference value of the comparison data after the comparison is completed, and displaying an evaluation value on a display terminal;
when the difference value is within the preset value range, the battery is a usable battery;
When the difference is not within the preset range, the battery is not usable.
8. The high-precision bidirectional direct current power supply for electric control testing of a new energy automobile according to claim 7, wherein the high-precision bidirectional direct current power supply is characterized in that: the data control detection unit further includes:
the control data analysis module is used for:
acquiring acquisition results of the data of each control device according to the electric signal data;
acquiring panel control data, communication control data, external control data and default data in the data;
acquiring operation parameter data in the panel control data, judging whether the panel parameters are in a normal state according to the operation records, and stopping or resetting if the panel parameters are in an abnormal state;
acquiring software operation data and communication instruction parameter data in the communication control data, judging whether the communication control data is in a normal state according to the operation record, and stopping or resetting if the communication control data is in an abnormal state;
acquiring power supply current and voltage data in external control data, judging whether the external control data is in a normal state according to the power supply current and the voltage, and stopping, resetting or adjusting if the external control data is in an abnormal state;
And acquiring the power supply data of different operation equipment terminals in the default data, judging whether the default data is in a normal state according to the power supply data, and if the default data is in an abnormal state, performing instruction operation.
9. The high-precision bidirectional direct current power supply for electric control testing of new energy automobiles according to claim 1, wherein the high-precision bidirectional direct current power supply is characterized in that: the control power supply protection unit is used for:
acquiring a plurality of device data with power sources in the electric signal data, wherein when the power source device displays an abnormal alarm on a display terminal, emergency stop operation is performed on the terminal, and the power source output can be stopped in an emergency after the emergency stop;
acquiring data of an input port, an output overcurrent port, an output overvoltage port and a power device overtemperature port in power equipment, and when the data of the input port, the output overcurrent port, the output overvoltage port and the power device overtemperature port display abnormal alarms on a display terminal, a driver can call detailed data information on the terminal;
the voltage value of the power supply equipment after stopping for 10 seconds is obtained, when the voltage value of the output end of the power supply equipment is reduced to a safe voltage, the power supply equipment is in a normal state, and the voltage drop generated on the connection line of the power supply equipment and the equipment is automatically compensated through an automatic compensation voltage terminal.
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