CN211602007U

CN211602007U - Automatic test system of 48VDCDC converter of electric automobile

Info

Publication number: CN211602007U
Application number: CN201921687672.9U
Authority: CN
Inventors: 赵凌霄; 李津; 孔治国; 李晓; 未倩倩; 何鹏林; 刘易凡; 马凯; 王娇娇; 李川
Original assignee: CATARC Automotive Test Center Tianjin Co Ltd
Current assignee: CATARC Automotive Test Center Tianjin Co Ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-09-29
Anticipated expiration: 2029-10-10

Abstract

The utility model provides an automatic test system of an electric automobile 48V DCDC converter, which comprises a sample to be tested, a direct current power supply, a direct current electronic load, a control system and a low-voltage power supply, wherein the direct current power supply, the direct current electronic load and the low-voltage power supply are all in communication connection with the control system through Ethernet, and the control system sends and receives instructions in a unified manner; the direct current power supply is used for providing direct current power supply for the 48V DCDC converter; the direct current electronic load is used for simulating a 12V storage battery; the control system is used for independently collecting CAN information and PWM information of the DC/DC converter. The utility model discloses can be used for the research and development verification test of relevant product, improve efficiency of software testing, the complete real-time data of record, detect indexes such as evaluation sample electric property, reliable performance, mechanical properties safely, high-efficiently, provide abundant technique and data support for the drafting revision of relevant enterprise, department development, verification and standard regulation.

Description

Automatic test system of 48VDCDC converter of electric automobile

Technical Field

The utility model belongs to the electric automobile field especially relates to an automatic test system of electric automobile 48V DC converter.

Background

With the increasing strictness of energy conservation and emission reduction in the automobile industry, the traditional 12V system still cannot meet the requirement of energy conservation limitation in the prior art and the industrial background, and a 48V automobile electrical system is produced at the same time. In recent years, the 48V layout in europe is more aggressive; in China, according to the passenger vehicle fuel consumption limit value revised by Ministry of industry and communications and the passenger vehicle fuel consumption evaluation method and index, the average fuel consumption of passenger vehicles produced by all enterprises must be reduced to 5.0L/100 kilometers by 2020, and the hybrid and pure electric vehicles are the best technical routes. Pure electric driving is an ultimate goal of automobiles, but cannot be widely popularized in a short period of time due to high cost and endurance problems. Therefore, the 48V light mixing system is currently the most realistic choice for many enterprises.

The 48V DCDC converter is used as a key core component of energy transmission of a 48V system, is a bridge of 48V and 12V electric networks, realizes energy transmission, manages 48V and 12V batteries, and is an important ring for ensuring safe operation of a whole vehicle system, so that test evaluation of the 48V DCDC converter is more and more concerned, however, the continuous healthy development of the 48V system of the electric vehicle can be ensured only through detection evaluation of a longer period and tighter conditions.

At present, test evaluation aiming at the 48V DC/DC converter is mainly carried out from the aspects of efficiency, electrical function, salt mist resistance, reliability, durability, mechanical property and the like, and all tests have the characteristics of long time period, more sampling data and high relevance between test equipment and a sample to be tested. At present, in a domestic related detection mechanism, a control system of the DCDC and peripheral equipment for testing, such as an environmental chamber, a vibration table, an impact table, a salt fog box and the like, are generally controlled separately, and the testing method has many defects, such as incapability of synchronizing the states of the equipment and a sample, incapability of monitoring data of the testing system in real time, incapability of carrying out automatic testing and the like.

Disclosure of Invention

In view of this, the present invention is directed to an automatic testing system for a 48V DCDC converter of an electric vehicle, so as to solve the above mentioned problems in the background art.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an automatic test system for a 48V DCDC converter of an electric vehicle comprises a sample to be tested, a direct-current power supply, a direct-current electronic load, a control system and a low-voltage power supply, wherein the direct-current power supply, the direct-current electronic load and the low-voltage power supply are in communication connection with the control system through Ethernet, and the control system sends and receives instructions in a unified manner;

the direct current power supply is used for providing direct current power supply for the 48V DCDC converter;

the direct current electronic load is used for simulating a 12V storage battery;

the control system is used for independently collecting CAN information and PWM information of the DC/DC converter.

Further, the display is further included, and the display is connected with the control system.

Further, the sample to be tested is placed in an environment bin or fixed on a vibration table.

Further, the device also comprises a voltage sensor, a vibration sensor and a temperature sensor which are used for detecting a sample to be detected, wherein the voltage sensor, the vibration sensor and the temperature sensor are all connected with the control system through data lines.

Compared with the prior art, the automatic test system of electric automobile 48V DCDC converter have following advantage:

the utility model discloses can be used for the research and development verification test of relevant product, improve efficiency of software testing, the complete real-time data of record, detect indexes such as evaluation sample electric property, reliable performance, mechanical properties safely, high-efficiently, provide abundant technique and data support for the drafting revision of relevant enterprise, department development, verification and standard regulation.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic diagram of an automatic testing system for a 48V DCDC converter of an electric vehicle according to an embodiment of the present invention;

fig. 2 is a schematic connection diagram of a control system according to an embodiment of the present invention.

Description of reference numerals:

1-a low voltage power supply; 2-a direct current electronic load; 3-a control system; 4-a direct current power supply; 5-display.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1 is a schematic diagram of an automated testing system, which includes 6 DC power supplies 3 capable of providing DC power for a 48V DC/DC converter, 6 DC electronic loads 2 simulating a 12V storage battery, a board card capable of independently collecting CAN information and PWM information of the DC/DC converter, a

control system

3, 1

computer monitor

5, and 2 low-voltage power supplies 1 providing low-voltage control power supply for the 48V DC/DC converter, all the power supplies and the electronic loads are in communication connection with the control system 3 through ethernet, and the control system sends and receives instructions in a unified manner. FIG. 2 is a schematic diagram illustrating the connection control between the automatic control system and the peripheral device and the sample to be tested.

The working process of the utility model is as follows:

1. and selecting the specifications of a direct current power supply and an electronic load, wherein the nominal voltage and current are more than twice of the rated input and output voltage and current of the sample to be tested.

2. Placing a sample to be tested in an environment bin or fixing the sample to be tested on a vibration table;

3. whether the voltage sensor, the vibration sensor and the temperature sensor are reliably installed and whether the peripheral equipment establishes remote communication through Ethernet and RS485 is checked, and the remote communication is controlled through CANoe integration;

4. simulating an actual working condition, compiling an automatic test case according to a test requirement and a control logic of a sample to be tested, and linking the sample to be tested, an environment bin and a vibration table to set a time sequence for operation;

5. the sample is tested, the direct current power supply, the electronic load, the environmental chamber and the vibration table are operated and output according to the set working condition, and the sample to be tested is started to operate according to the given CAN communication or other modes;

6. monitoring all data in the testing process in real time, recording effective data, and monitoring in a graphical mode;

7. when faults such as overvoltage, overcurrent, overtemperature or sample error occur, the system can automatically start a protection program, stop input and output and record data before the faults;

8. after the test is finished, analyzing data and evaluating the sample to be tested

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an automatic test system of electric automobile 48V DCDC converter, includes the sample that awaits measuring, its characterized in that: the system also comprises a direct current power supply, a direct current electronic load, a control system and a low-voltage power supply, wherein the direct current power supply, the direct current electronic load and the low-voltage power supply are all in communication connection with the control system through Ethernet, and the control system sends and receives instructions in a unified manner;

2. The automatic test system of the 48V DCDC converter of the electric vehicle according to claim 1, characterized in that: the display is connected with the control system.

3. The automatic test system of the 48V DCDC converter of the electric vehicle according to claim 1, characterized in that: and placing the sample to be tested in an environment bin or fixing the sample to be tested on a vibration table.

4. The automatic test system of the 48V DCDC converter of the electric vehicle according to claim 1, characterized in that: the device is characterized by further comprising a voltage sensor, a vibration sensor and a temperature sensor, wherein the voltage sensor, the vibration sensor and the temperature sensor are used for detecting a sample to be detected, and the voltage sensor, the vibration sensor and the temperature sensor are all connected with the control system through data lines.