Testing device for intelligent electric appliance box of electric automobile

Abstract

The utility model discloses an intelligent electric appliance box testing device for an electric automobile, comprising a power supply module which comprises a direct current power supply and an electronic load, and the direct current power supply is connected with the electronic load through an intelligent electric appliance box of the electric automobile; an electric test board card unit, a CAN communication board card and an internet access module are arranged in the measurement and control case, the electric test board card unit is connected with an electric test port of the electric automobile intelligent electric appliance box, and the CAN communication board card is connected with a CAN bus port of the electric automobile intelligent electric appliance box; and the upper computer is respectively in communication connection with the network port module of the measurement and control case, the direct current power supply and the electronic load. All functions of the intelligent electric appliance box of the electric vehicle can be tested, and the test requirements of the intelligent electric appliance box of the electric vehicle are met.

Description

Technical Field

[0001] The utility model relates to the field of automobile accessories testing, in particular to a testing device for an intelligent electrical appliance box of an electric vehicle. Background Art

[0002] The electric vehicle smart electrical box is an important part of the electric vehicle high-voltage power distribution system, and one of the core components of the electric vehicle high-voltage power distribution system, playing a vital role in the operation of electric vehicles. Testing the electric vehicle smart electrical box is an important means to ensure its safety and reliability, and is essential in both product development and production.

[0003] The existing test device is set up according to the traditional automobile electrical box. The performance test of the traditional automobile electrical box is controlled by the circuit integrated in the load box. The loop control is completed manually or automatically. The tester observes the voltage and current information of the load box to determine whether the relays, fuses and other components in the loop are working properly, thereby judging whether the automobile electrical box can work properly. However, with the upgrading of electric vehicles, smart electrical boxes have integrated more functions, and the existing test devices cannot meet the testing needs of electric vehicle smart electrical boxes. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an electric vehicle intelligent electrical box, which can meet the testing requirements of the electric vehicle intelligent electrical box.

[0005] According to the first aspect of the utility model, the electric vehicle intelligent electrical box testing device is used to test the electric vehicle intelligent electrical box, including: a power supply module, the power supply module includes a DC power supply and an electronic load, the DC power supply is connected to the electronic load through the electric vehicle intelligent electrical box; a measurement and control chassis, the measurement and control chassis is provided with an electrical test board unit, a CAN communication board and a network port module, the electrical test board unit is connected to the electrical test port of the electric vehicle intelligent electrical box, and the CAN communication board is connected to the CAN bus port of the electric vehicle intelligent electrical box; a host computer, the host computer is respectively connected to the network port module, the DC power supply and the electronic load of the measurement and control chassis for communication.

[0006] The electric vehicle intelligent electrical box testing device according to the embodiment of the utility model has at least the following beneficial effects:

[0007] The implementation manner of the utility model is powered by a DC power supply, and an electronic load is used to simulate vehicle-mounted electrical appliances. The measurement and control chassis is connected to the electrical test port of the electric vehicle intelligent electrical box through an electrical test board unit, so that the electrical performance test of the electric vehicle intelligent electrical box can be performed. The measurement and control chassis is connected to the CAN bus port of the electric vehicle intelligent electrical box through a CAN communication board, so that the functional test of the electric vehicle intelligent electrical box can be performed. The host computer obtains the test data of the DC power supply, the electronic load and the measurement and control chassis in real time for the test personnel to consult, so that all functions of the electric vehicle intelligent electrical box can be tested, thereby meeting the test requirements of the electric vehicle intelligent electrical box.

[0008] According to some embodiments of the utility model, the electrical test board unit includes a relay board, and the relay board is connected to an external relay pin of the electric vehicle smart electrical box.

[0009] According to some embodiments of the utility model, the measurement and control chassis includes a current and voltage acquisition card, and the current and voltage acquisition card is connected to the power supply output end of the electric vehicle intelligent electrical box.

[0010] According to some embodiments of the present utility model, a resistance card is further provided in the measurement and control chassis.

[0011] According to some embodiments of the utility model, a digital IO card is further provided in the measurement and control chassis, and the digital IO card is connected to the digital signal terminal of the intelligent electrical appliance box of the electric vehicle.

[0012] According to some embodiments of the present utility model, a plurality of board installation slots are provided on the measurement and control chassis, and the electrical test board unit and the CAN communication board can be detachably installed in the corresponding board installation slots.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0015] Figure 1 This is a connection diagram of the electric vehicle intelligent electrical box testing device in the embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the measurement and control chassis in the embodiment of the utility model.

[0017] Figure Number:

[0018] A DC power supply 100, an electronic load 200, a measurement and control chassis 300, a CAN communication board 310, a network port module 320, a relay board 330, a current and voltage acquisition card 340, a resistor card 350, a digital IO card 360, and a host computer 400. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] Reference Figure 1 and Figure 2As shown, a test device for an electric vehicle intelligent electrical box is used to test an electric vehicle intelligent electrical box. The test of the electric vehicle intelligent electrical box includes electrical performance test and functional test. The electrical performance test includes power distribution function test, external relay test, etc., and all tests other than electrical performance test that need to rely on CAN communication are classified as functional test. The test device for an electric vehicle intelligent electrical box includes: a power supply module, a measurement and control chassis 300, and a host computer 400. Specifically, the power supply module includes a DC power supply 100 and an electronic load 200, and the DC power supply 100 is connected to the electronic load 200 through the electric vehicle intelligent electrical box; the measurement and control chassis 300 is provided with an electrical test board unit, a CAN communication board 310, and a network port module 320, the electrical test board unit is connected to the electrical test port of the electric vehicle intelligent electrical box, and the CAN communication board 310 is connected to the CAN bus port of the electric vehicle intelligent electrical box; the host computer 400 is respectively connected to the network port module 320, the DC power supply 100, and the electronic load 200 of the measurement and control chassis 300.

[0024] It should be noted that in the above-mentioned power supply module, the DC power supply 100 and the electronic load 200 both adopt the DC power supply 100 and the electronic load 200 in the prior art. The DC power supply 100 is responsible for power supply, and the electronic load 200 is responsible for simulating vehicle-mounted electrical appliances. The host computer 400 adopts a PC, and the PC is connected to the DC power supply 100, the electronic load 200 and the measurement and control chassis 300 through a network through a switch. A main control board is provided in the measurement and control chassis 300, and a network port module is provided on the main control board. The PC can control the actions of other boards through the main control board. The PC receives control commands through the network cable on the one hand, and reads the status and data of each device on the other hand.

[0025] Specifically, the electrical test card unit includes a relay card 330 and a resistor card 350. The relay card 330 is connected to the external relay pin of the electric vehicle smart electrical box, and the current and voltage acquisition card 340 is connected to the power supply output end of the electric vehicle smart electrical box. The resistor card 350 and the digital IO card 360 are respectively connected to the corresponding ports of the electric vehicle smart electrical box, wherein the resistor card 350 acts as a pull-up resistor or a pull-down resistor in some tests, that is, during the test process, some pins of the smart electrical appliance, such as the pins of the operational amplifier circuit, and the analog signal output pins must be connected to the corresponding resistor to work normally. The digital IO card 360 is connected to the digital signal end of the electric vehicle smart electrical box, and is used for the digital signal input and output test of the electrical box. The current and voltage acquisition card 340 can perform electrical performance tests as well as functional tests.

[0026] It should be noted that the electrical test card unit in the embodiment of the utility model includes a variety of different cards, and different electrical performance tests can be performed by corresponding cards with different functions. The following describes in detail the test process of the electric vehicle smart electrical box by taking the external relay pin test and the dimming motor pin test as examples:

[0027] External relay test:

[0028] S101, connecting one end of the wiring harness of the external relay pin of the electric vehicle intelligent electrical box to the NO end of the relay board 330, and the other end to the COM end of the relay board 330;

[0029] S102 , the host computer 400 controls the closed relay board 330 .

[0030] S103 , the host computer 400 reads the voltage and current data of the electronic load 200 .

[0031] S104, after a certain delay, the host computer 400 disconnects the relay board 330.

[0032] S105 , reading the voltage and current data of the electronic load 200 again.

[0033] S106. If the voltage value and current value read for the first time are within the tolerance range and the voltage value and current value read for the second time are 0, then this test passes.

[0034] S107, the host computer 400 saves the voltage and current data, and the test ends.

[0035] Dimming motor test:

[0036] S201 , connecting the dimming motor pin of the electric vehicle smart electrical box to the current and voltage acquisition card 340 , and connecting the CAN bus port of the electric vehicle smart electrical box to the CAN communication board 310 .

[0037] S202, the measurement and control chassis 300 sends a command through the CAN bus to output the dimming motor to the 1st gear.

[0038] S203, the measurement and control chassis 300 reads the measurement value of the current and voltage acquisition card 340, and the value is qualified if it is within the tolerance range.

[0039] S204, repeat steps S202-S203, respectively set the dimming motor output to level 2, 3, 4, and 5, and measure.

[0040] S205 , the host computer 400 reads and saves the current measurement value and the test result.

[0041] It should be noted that the above external relay test and dimming motor test are just two test examples that the test device of this application can perform on the smart electrical box of an electric vehicle. This application can test different functions of the smart electrical box of an electric vehicle according to the different boards of the measurement and control chassis 300, such as brake control box test, air conditioning route test, antenna anti-theft control test, etc.

[0042] refer to Figure 2 As shown, the measurement and control chassis 300 is provided with a plurality of board installation slots, and the CAN communication board 310, the relay board 330, the current and voltage acquisition card 340, the resistor card 350 and the digital IO card 360 are detachably installed in the corresponding board installation slots. It should be understood that in addition to the CAN communication board 310, the relay board 330, the current and voltage acquisition card 340, the resistor card 350 and the digital IO card 360, other types of boards can be added to the measurement and control chassis 300 according to the test needs. In addition to various types of boards, the measurement and control chassis 300 is also provided with other conventional components such as a power supply module, a main control board, and a memory. The installation and connection of the power supply module, the main control board, and the memory belong to conventional technical means in this field, and this application will not be described in detail.

[0043] The embodiment of the utility model is powered by a DC power supply 100, and the vehicle-mounted electrical appliances are simulated by an electronic load 200. The measurement and control chassis 300 is connected to the electrical test port of the electric vehicle intelligent electrical box through an electrical test board unit, so that the electrical performance test of the electric vehicle intelligent electrical box can be performed. The measurement and control chassis 300 is connected to the CAN bus port of the electric vehicle intelligent electrical box through a CAN communication board 310, so that the functional test of the electric vehicle intelligent electrical box can be performed. The host computer 400 obtains the test data of the DC power supply 100, the electronic load 200 and the measurement and control chassis 300 in real time for the test personnel to consult, so that all functions of the electric vehicle intelligent electrical box can be tested to meet the test requirements of the electric vehicle intelligent electrical box.

[0044] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A test device for an electric vehicle intelligent electrical box, used for testing an electric vehicle intelligent electrical box, characterized in that: include: A power supply module, the power supply module comprising a direct current power supply (100) and an electronic load (200), the direct current power supply (100) being connected to the electronic load (200) via the electric vehicle intelligent electrical appliance box; A measurement and control chassis (300), wherein an electrical test board unit, a CAN communication board (310) and a network port module (320) are arranged in the measurement and control chassis (300), wherein the electrical test board unit is connected to an electrical test port of the electric vehicle intelligent electrical appliance box, and the CAN communication board (310) is connected to a CAN bus port of the electric vehicle intelligent electrical appliance box; A host computer (400), the host computer (400) is communicatively connected to the network port module (320) of the measurement and control chassis (300), the direct current power supply (100), and the electronic load (200).

2. The electric vehicle intelligent electrical box testing device according to claim 1, characterized in that: The electrical test board unit comprises a relay board (330), and the relay board (330) is connected to an external relay pin of the electric vehicle intelligent electrical appliance box.

3. The electric vehicle intelligent electrical box testing device according to claim 1, characterized in that: A current and voltage acquisition card (340) is also provided in the measurement and control chassis (300), and the current and voltage acquisition card (340) is connected to the power supply output end of the intelligent electrical appliance box of the electric vehicle.

4. The electric vehicle intelligent electrical box testing device according to claim 1, characterized in that: A resistance card (350) is also provided in the measurement and control chassis (300).

5. The electric vehicle intelligent electrical box testing device according to claim 1, characterized in that: A digital IO card (360) is also provided in the measurement and control chassis (300), and the digital IO card (360) is connected to the digital signal terminal of the intelligent electrical appliance box of the electric vehicle.

6. The electric vehicle intelligent electrical box testing device according to claim 1, characterized in that: The measurement and control chassis (300) is provided with a plurality of board installation slots, and the electrical test board unit and the CAN communication board (310) are detachably installed in corresponding board installation slots.

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