CN-115291015-B - New energy automobile charging detection system and method

CN115291015BCN 115291015 BCN115291015 BCN 115291015BCN-115291015-B

Abstract

The application is applicable to the technical field of safety detection, and provides a new energy automobile charging detection system and a new energy automobile charging detection method, wherein the system comprises a signal acquisition processing subsystem, an operation control subsystem, a power output subsystem and an executing mechanism; the signal acquisition processing subsystem acquires charging data of the vehicle in real time and sends the charging data to a microcontroller in the operation control subsystem, the microcontroller comprises a direct current charging control unit, an alternating current charging control unit, a direct current charging operation unit and an alternating current charging operation unit, the alternating current/direct current charging operation unit calculates the charging data and outputs a detection result, the alternating current/direct current charging control unit sends alternating current/direct current charging and alternating current/direct current output power adjustment instructions to the power output subsystem based on the detection result, the power output subsystem outputs power according to preset charging working conditions after receiving the charging instructions, and the executing mechanism executes power output actions. The application can realize the rapid charge detection of the new energy automobile.

Inventors

Guo Pi
GUO RUI
ZHANG TAO
JIA XIAOLEI
LI TUO
WANG HONG
GU ZHANXUN
ZHANG GUANGXIAN
DI JIANHUI
ZHANG YUEZHEN
YANG SHAODONG
LI WENYUAN
Tong Yongbao
REN SHIJIE

Assignees

石家庄华燕交通科技有限公司
石家庄华燕交通科技有限公司

Dates

Publication Date: 20260421
Application Date: 20220809
Priority Date: 20220809

Claims (6)

1. The rapid charging detection method for the new energy automobile is characterized by comprising the following steps of: The method comprises the steps of sending a direct current detection instruction by an upper computer, establishing a direct current charging control flow and a direct current charging operation flow by utilizing a direct current charging working condition preset by a charging detection system, charging a vehicle according to the direct current charging control flow, and transmitting a first detection result of the direct current charging operation flow back to the upper computer through a microcontroller of the charging detection system according to a first detection result of the direct current charging operation flow; the direct current charging working condition comprises an initial stage, a general stage and an abnormal stage; The initial stage is used for detecting a resistor, detecting the voltage and detecting the abnormal condition of a charging loop when the microcontroller confirms a first connection confirmation level signal, wherein the resistor is embedded in a vehicle direct-current charging socket and is used for confirming the connection confirmation signal of a charging pile, the voltage detection is CC2 voltage detection, CC2 is a vehicle connection confirmation line, and the vehicle confirms whether a gun is inserted or not by detecting the level change of the vehicle; the general stage divides a plurality of current ranges in the execution of the direct current charging control flow to carry out a plurality of item detection, wherein the plurality of item detection comprises voltage consistency, temperature consistency, voltage precision, charging leakage current and communication message anomaly detection; The abnormal stage is an insulation fault shutdown stage and is used for manufacturing insulation fault shutdown and testing insulation monitoring function verification, wherein the insulation fault manufacturing mode is to manufacture uninsulated working conditions between a power battery and a vehicle electric platform, namely, the uninsulated resistance is calculated and connected by acquiring the voltage of the power battery and is connected with a circuit; the upper computer sends an alternating current detection instruction, establishes an alternating current charging control flow and an alternating current charging operation flow by utilizing a preset alternating current charging working condition of the charging detection system, and transmits a second detection result of the alternating current charging operation flow back to the upper computer through a microcontroller of the charging detection system according to the second detection result of the alternating current charging operation flow.
2. The rapid charging detection method of the new energy automobile of claim 1, wherein the establishment of the direct current charging control flow comprises the steps that a connection confirmation level sampling unit in a signal acquisition and processing subsystem acquires a first connection confirmation level signal of a direct current gun and a vehicle and sends the first connection confirmation level signal to a direct current charging control unit, wherein the direct current charging control unit sends a charging starting instruction to a program-controlled direct current power supply in a power output subsystem; The method comprises the steps of establishing a direct current charging operation flow, calculating and judging the state of direct current charging data after the direct current charging operation unit receives the direct current charging data acquired by a signal acquisition and processing subsystem in real time, and outputting a first detection result; The method comprises the steps of establishing an alternating current charging control flow, wherein a connection confirmation level sampling unit in a signal acquisition and processing subsystem acquires a second connection confirmation level signal of an alternating current gun and a vehicle and sends the second connection confirmation level signal to an alternating current charging control unit; the method comprises the steps that after an alternating-current charging operation unit in the microcontroller receives alternating-current charging data acquired by a signal acquisition and processing subsystem in real time, the alternating-current charging operation unit calculates and judges the state of the alternating-current charging data and outputs a second detection result, and based on the second detection result, the alternating-current charging control unit sends a charging instruction to the power output subsystem according to a preset alternating-current charging working condition.
3. A new energy automobile charging detection system for implementing the new energy automobile rapid charging detection method according to any one of claims 1 to 2, which is used for charging and detecting a vehicle, and is characterized by comprising: The system comprises a signal acquisition processing subsystem, a microprocessor, a control subsystem and a control subsystem, wherein the signal acquisition processing subsystem is used for acquiring charging data of a vehicle in real time and transmitting the charging data to the microprocessor in the operation control subsystem, and the charging data comprises direct current charging data and alternating current charging data; The operation control subsystem is used for calculating and judging the state of the direct-current charging data after the direct-current charging data is received by the microcontroller, outputting a first detection result, sending a direct-current charging instruction to the power output subsystem by the direct-current charging control unit based on the first detection result, calculating and judging the state of the alternating-current charging data by the alternating-current charging operation unit after the alternating-current charging data is received by the microcontroller, outputting a second detection result, sending an alternating-current charging instruction to the power output subsystem by the alternating-current charging control unit based on the second detection result, wherein the direct-current charging instruction comprises a direct-current charging signal and a direct-current output power adjusting signal, and the alternating-current charging instruction comprises an alternating-current charging signal and an alternating-current output power adjusting signal; The power output subsystem is used for outputting power according to a preset charging working condition after receiving the direct-current charging instruction or the alternating-current charging instruction; The actuating mechanism is used for connecting the vehicle with the power output subsystem to execute the action of power output and is also used for connecting the vehicle with the signal acquisition and processing subsystem.
4. The new energy automobile charging detection system of claim 3, wherein the signal acquisition and processing subsystem comprises a converter, a DC current sensor, a DC voltage sensor, a DC leakage current sensor, a connection confirmation level sampling unit, an AC current sensor and an AC voltage sensor; The converter is used for communication sensing between the new energy automobile charging detection system and the vehicle end, the direct current sensor is used for collecting direct current charging current of the vehicle end in real time, the direct current voltage sensor is used for collecting direct current charging voltage of the vehicle end in real time, the direct current leakage current sensor is used for collecting direct current charging leakage current of the vehicle end in real time, the connection confirmation level sampling unit is used for collecting first connection confirmation level signals of the vehicle end and the direct current gun and second connection confirmation level signals of the vehicle end and the alternating current gun in real time, the alternating current sensor is used for collecting alternating current charging current of the vehicle end in real time, and the alternating current voltage sensor is used for collecting alternating current charging voltage of the vehicle end in real time; The power output subsystem comprises a programmable power supply, wherein the programmable power supply comprises a programmable direct current power supply and a programmable alternating current power supply, the programmable direct current power supply is used for outputting power under the direct current charging instruction, and the programmable alternating current power supply is used for outputting power under the alternating current charging instruction; The executing mechanism comprises a direct current gun thread control unit and an alternating current gun thread control unit, wherein the direct current gun thread control unit is used for controlling the direct current gun to charge a vehicle end and for signal transmission between the signal acquisition processing subsystem and the vehicle end, and the alternating current gun thread control unit is used for controlling the alternating current gun to charge the vehicle end and for signal transmission between the signal acquisition processing subsystem and the vehicle end.
5. The system of claim 4, wherein the connection confirmation level sampling unit is further configured to send the first connection confirmation level signal to the dc charging control unit and the second connection confirmation level signal to the ac charging control unit, the dc charging control unit sends a charging start instruction to the power output subsystem based on the first connection confirmation level signal, and the ac charging control unit sends a charging start instruction to the power output subsystem based on the second connection confirmation level signal.
6. The new energy automobile charging detection system according to claim 4, wherein the converter is further used for connecting a microcontroller and the signal acquisition and processing subsystem, the converter, the host computer, the vehicle, the programmable power supply and the microcontroller form a bus communication network, and the bus communication network is used for data interaction and command transmission between the new energy automobile charging detection system and a tested vehicle in a detection process.

Description

New energy automobile charging detection system and method Technical Field The application belongs to the technical field of safety detection, and particularly relates to a new energy automobile charging detection system and method. Background With the green energy revolution of the automobile industry, the production and sales of new energy automobiles in China are the first world, the production and sales of the new energy automobiles in China are generally the rising trend in recent years, and particularly the sales of the new energy automobiles in China in 2021 reaches 352.1 thousands, the accumulated storage of the new energy automobiles in China reaches 784 thousands, and the new energy automobiles are the main direction of automobile development in a long period of time in the future. At present, the running safety problem of the new energy automobile is also continuously highlighted, and the accidents such as fire, explosion and the like are also continuously increased in various states such as running, stopping and charging of the automobile, so that new requirements are also put forward for testing means. At present, only partial special detection projects aiming at new energy electric vehicles are carried out before the off-line detection of the vehicles in the host factory, and the detection method is complex, long in detection time and low in detection efficiency, and is not applicable to the periodic detection of the vehicles in use. Besides the dependence on detection items such as traditional braking, sideslip and lamplight in the vehicle detection method, more important safety detection is transferred to the detection of a special three-electric system of a new energy automobile, in particular to the charge and discharge test of the vehicle. The vehicle is charged by the intervention of an electric control system, a battery and a management system of the vehicle, a part of charging flow of the vehicle needs to be simulated when the vehicle is detected, and the detection of the vehicle needs to be realized by the modes of collecting data of the battery end of the vehicle, simulating and manufacturing various abnormal faults, exciting a protection mechanism of the vehicle and the like in the charging process in a shortest time as much as possible. Currently, there is no solution for such fast charge detection in the market. Disclosure of Invention In order to overcome the problems in the related art, the embodiment of the application provides a new energy automobile charging detection system and a method, which can simulate part of the charging flow of a vehicle through preset charging working conditions, so that charging and detection are performed simultaneously, and quick charging detection is realized. The application is realized by the following technical scheme: In a first aspect, an embodiment of the application provides a new energy electric automobile alternating current-direct current charging detection system, which comprises a signal acquisition processing subsystem, an operation control subsystem, a power output subsystem and an executing mechanism; The signal acquisition processing subsystem is used for acquiring charging data of a vehicle in real time and transmitting the charging data to a microcontroller in the operation control subsystem, wherein the charging data comprises direct current charging data and alternating current charging data; The operation control subsystem is used for calculating and judging the state of the direct-current charging data after the direct-current charging data is received by the microcontroller, outputting a first detection result, sending a direct-current charging instruction to the power output subsystem by the direct-current charging control unit based on the first detection result, calculating and judging the state of the alternating-current charging data by the alternating-current charging operation unit after the alternating-current charging data is received by the microcontroller, outputting a second detection result, and sending an alternating-current charging instruction to the power output subsystem by the alternating-current charging control unit based on the second detection result; The power output subsystem is used for outputting power according to a preset charging working condition after receiving the direct-current charging instruction or the alternating-current charging instruction; The actuating mechanism is used for connecting the vehicle with the power output subsystem to execute the action of power output and is also used for connecting the vehicle with the signal acquisition and processing subsystem. In one possible implementation, the signal acquisition processing subsystem includes a converter, a DC current sensor, a DC voltage sensor, a DC leakage current sensor, a connection confirmation level sampling unit, an AC current sensor, and an AC voltage sensor; The converter is used for communication sensing between the new