Electric vehicle charging efficiency test system

Abstract

The utility model discloses an electric automobile charging efficiency test system, which comprises a charging pile, a charger and a power battery, the charging pile is in output connection with the charger through a high-voltage wiring harness, the charger is in output connection with a high-voltage distribution box through the high-voltage wiring harness, and the high-voltage distribution box is in output connection with the power battery through the high-voltage wiring harness; the system also comprises a detection unit composed of a voltage sensor and a current sensor. The detection unit is connected between the vehicle charging pile and the charger, between the charger and the high-voltage distribution box, and between the high-voltage distribution box and the power battery. The system further comprises a data processing platform and a display module, the data processing platform receives data output by the detection unit, and the display module is used for data display. According to the utility model, rapid detection of the charging efficiency of the electric vehicle can be realized, and the charging efficiency can be analyzed by testers in a data display form, thereby improving the working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle testing, in particular to an electric vehicle charging efficiency testing system. Background Art

[0002] With the increasing popularity of new energy electric vehicles, major OEMs are paying more and more attention to the research and development of electric vehicles. Due to the advantages of electric vehicles in energy utilization and environmental protection, more and more people are committed to the development and research of electric vehicles. Electric vehicles are considered to be the future development trend of automobiles. In the process of designing and developing electric vehicles, major OEMs need to conduct a large number of tests, including tests of competing vehicles and tests of experimental vehicles at different stages, which include the testing and analysis of the charging efficiency of the whole vehicle. At present, there is no complete system to quickly monitor the charging efficiency, and most of them still use online manual monitoring and data recording. Summary of the invention

[0003] The purpose of the utility model is to provide an electric vehicle charging efficiency testing system to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: an electric vehicle charging efficiency test system, comprising a charging pile, a charger and a power battery, the charging pile is connected to the charger via a high-voltage wire harness output, the charger is connected to a high-voltage distribution box via a high-voltage wire harness output, and the high-voltage distribution box is connected to the power battery via a high-voltage wire harness output;

[0005] It also includes a detection unit composed of a voltage sensor and a current sensor, and the detection unit is connected between the vehicle charging pile and the charger, between the charger and the high-voltage distribution box, and between the high-voltage distribution box and the power battery;

[0006] It also includes a data processing platform and a display module. The data processing platform receives the data output by the detection unit, and the display module is used for data display.

[0007] Preferably, the other output end of the high-voltage distribution box is connected to the DC / DC unit, and a detection unit is also connected between the high-voltage distribution box and the DC / DC unit.

[0008] Preferably, the output end of the DC / DC unit is connected to a low-voltage accessory and a 12V battery via a low-voltage wiring harness output, and a detection unit is also connected between the DC / DC unit and the low-voltage accessory.

[0009] Preferably, the other output end of the high-voltage distribution box is connected to the motor controller, and one end of the motor controller is connected to the drive motor.

[0010] Preferably, the display module is communicatively connected to a remote monitoring terminal to achieve remote monitoring of data.

[0011] Preferably, the charging pile and the charger are connected using tooling.

[0012] Preferably, the data processing platform uses the big data real-time computing engine Flink to calculate the data.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model can realize the rapid detection of the charging efficiency of the electric vehicle, and provide the test personnel with analysis in the form of data display, thereby improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a connection diagram of the detection unit of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall architecture of the utility model system. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Please refer to the figure, the quotient of the power entering the power battery after the charger and the power output of the charging terminal before the charger is the charging efficiency of the whole vehicle. The utility model mainly includes: a charging gun adapter for data collection, the main function of which is to lead the current and voltage signals output by the charging terminal; the overall structure of the on-board charger (attached Figure 1 ) The front end includes three parts: impact current limiting, input filtering, and rectification filtering, which mainly convert AC into DC and perform power factor correction; the back end includes two parts: inverter (power conversion circuit) and rectification filtering, whose main functions are to increase power density and increase the output range of output voltage. In fact, the front end can be regarded as AC / DC, and the back end as DC / DC.

[0019] Specifically, refer to Figure 1 As shown, it includes a charging pile, a charger and a power battery. The charging pile is connected to the charger via a high-voltage wiring harness output, the charger is connected to a high-voltage distribution box via a high-voltage wiring harness output, and the high-voltage distribution box is connected to the power battery via a high-voltage wiring harness output; the other output end of the high-voltage distribution box is connected to a motor controller, and one end of the motor controller is connected to a drive motor.

[0020] It also includes a detection unit composed of a voltage sensor and a current sensor. The detection unit is connected between the vehicle charging pile and the charger, between the charger and the high-voltage distribution box, and between the high-voltage distribution box and the power battery. The other output end of the high-voltage distribution box is connected to the DC / DC unit, and a detection unit is also connected between the high-voltage distribution box and the DC / DC unit. The output end of the DC / DC unit is connected to low-voltage accessories and a 12V battery through a low-voltage wiring harness output, and a detection unit is also connected between the DC / DC unit and the low-voltage accessories.

[0021] Continue to refer to Figure 2 As shown, it also includes a data processing platform and a display module. The data processing platform receives the data output by the detection unit, and the display module is used for data display. And a remote monitoring terminal is provided to realize remote monitoring of the data. The data analysis and processing module performs different levels of solution operations on the collected current and voltage signals, and calculates the corresponding power and charging efficiency respectively. The specific implementation method is to connect the charging pile and the slow charging port of the whole vehicle through the charging gun adapter tooling, collect data on the current and voltage signals drawn out after the tooling and the charger, and output them to the data processing platform. The big data real-time computing engine Flink is mainly used to analyze the collected data. First, the data is pre-processed respectively, and the incomplete data fields and abnormal data (the data voltage or current is obviously too large, and the abnormal values ​​that do not conform to the actual situation) are removed. Then, the current and voltage before and after entering the charger are respectively multiplied and integrated to obtain the charging amount P1 at the charging station and the charging amount P2 entering the power battery, and then P1 and P2 are divided twice to solve P2 / P1, which is the charging efficiency γ of the whole vehicle, and the result data (time, vehicle model, vehicle code, charging amount P1 at the charging station, charging amount P2 of the power battery, and charging efficiency γ of the whole vehicle) are saved to the database. In this embodiment, the detection units are distributed in multiple electrical connection positions in the vehicle, and multiple data can be calculated and compared, so that the detection results are more accurate and have reference significance.

[0022] The data display module can display and analyze the corresponding data by querying the result data in the database, so that the vehicle test personnel can summarize and analyze the data. The remote monitoring unit receives the data signal transmitted by the data display module through wireless signal transmission. The intervention of the remote monitoring terminal can greatly expand the activity space of the test monitoring personnel and improve work efficiency.

[0023] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric vehicle charging efficiency test system, characterized in that: It includes a charging pile, a charger and a power battery. The charging pile is connected to the charger via a high-voltage wire harness output, the charger is connected to a high-voltage distribution box via a high-voltage wire harness output, and the high-voltage distribution box is connected to the power battery via a high-voltage wire harness output; It also includes a detection unit composed of a voltage sensor and a current sensor, and the detection unit is connected between the vehicle charging pile and the charger, between the charger and the high-voltage distribution box, and between the high-voltage distribution box and the power battery; It also includes a data processing platform and a display module. The data processing platform receives the data output by the detection unit, and the display module is used for data display.

2. The electric vehicle charging efficiency testing system according to claim 1, characterized in that: The other output end of the high-voltage distribution box is connected to the DC / DC unit, and a detection unit is also connected between the high-voltage distribution box and the DC / DC unit.

3. The electric vehicle charging efficiency testing system according to claim 2, characterized in that: The output end of the DC / DC unit is connected to a low-voltage accessory and a 12V battery via a low-voltage wiring harness output, and a detection unit is also connected between the DC / DC unit and the low-voltage accessory.

4. The electric vehicle charging efficiency testing system according to claim 3 is characterized in that: The other output end of the high-voltage distribution box is connected to the motor controller, and one end of the motor controller is connected to the drive motor.

5. The electric vehicle charging efficiency testing system according to claim 4, characterized in that: The display module is connected to a remote monitoring terminal for remote monitoring of data.

6. The electric vehicle charging efficiency testing system according to claim 5, characterized in that: The charging pile and the charger are connected using tooling.

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