High-voltage distribution box test fixture

Abstract

The utility model relates to a high-voltage distribution box test fixture, which comprises a feeding sliding table, a positioning carrying table, a lifting press-fit assembly and an automatic power connection assembly which are arranged on a test table, and a test instrument which is matched with the automatic power connection assembly to implement a test, a shunt power connection probe is arranged at the shunt power connection end, facing the side face of the to-be-tested high-voltage distribution box, of one side of the positioning carrying table, the lifting pressing assembly comprises a pressing plate, a lifting plate, a pressing column, a pressing spring and a lifting air cylinder, and the automatic power connection assembly comprises a relay power connection probe, a butt joint air cylinder and a butt joint insertion plate. According to the clamp, the to-be-tested high-voltage distribution box is stably sent to a to-be-tested area through the positioning carrying table, after the lifting plate is pressed downwards, the power connection end and the power connection probe make contact with the to-be-tested power connection end one by one, electrical conduction can be achieved, and the electrical properties of a relay, a diverter and all resistors of the high-voltage distribution box are detected by a testing instrument; detection is comprehensive, the automation degree is high, and the testing efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automated detection equipment, in particular to a high-voltage distribution box test fixture. Background Art

[0002] With the rapid development of new energy vehicles, high-voltage distribution boxes (BDUs, Battery Disconnect Unite), as key components of new energy vehicles, play an important role in their charging and discharging processes. The main parts of the high-voltage distribution box are copper busbars, which perform the function of conductivity, as well as relays, cement resistors, and shunts. The layers of the copper busbars play different roles in connecting different relays during charging and discharging. BDU is also a type of high-voltage distribution box, which is a power distribution unit and a power disconnection unit. In order to fully test the performance parameters and operating stability of the high-voltage distribution box, it is necessary to conduct comprehensive, complete, and efficient power-on performance testing on each high-voltage distribution box produced on the production line. For this purpose, we need to specially design an efficient and comprehensive automated power-on test equipment. Utility Model Content

[0003] The purpose of this utility model is: in view of the technical demand for comprehensive diagnosis of the electrical performance of the high-voltage distribution box, a key component of new energy vehicles, before production and installation, we design a high-voltage distribution box test fixture to ensure that the performance of each high-voltage distribution box meets the standards, to ensure the safety and stability of the high-voltage distribution box after installation, as well as the electrochemical performance stability and electronic control safety of new energy vehicles, to improve the qualified rate of products leaving the factory, and to prevent problematic high-voltage distribution boxes from being put into the new energy vehicle market.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A high-voltage distribution box test fixture includes a feed sliding platform, a positioning platform, a lifting and pressing assembly and an automatic power connection assembly arranged on a test table, and a test instrument that cooperates with the automatic power connection assembly to implement the test.

[0006] The feed slide platform includes a slider rail assembly arranged in parallel on the left and right sides. The slider is arranged below the positioning platform. A positioning pin is provided on the upper surface of the positioning platform. Guide pillar and guide sleeve assemblies are provided at the four corners. The guide sleeves are provided at the four corners of the lifting and pressing assembly. A shunt power probe is provided on the shunt power terminal on one side of the positioning platform, facing the side of the high-voltage distribution box to be tested.

[0007] The lifting and pressing assembly includes a pressing plate, a lifting plate, a pressing column, a pressing spring and a lifting cylinder. The lifting cylinder drives the lifting plate to lift and lower. The four corners of the lifting plate are provided with guide sleeves. After the guide sleeves cooperate with the guide columns, vertical lifting and lowering are realized. The pressing plate is arranged on the lower end surface of the lifting plate, and the lifting plate is provided with a plurality of pressing columns at the current guide end provided on the upper end surface of the high-voltage distribution box to be tested. The lower end of the pressing column is provided with a pressing spring. The pressing spring is sleeved with a power block. The power block contacts the current guide end to realize electrical conduction.

[0008] The automatic power connection component includes a relay power connection probe, a docking cylinder, and a docking plug plate. The relay power connection probe is set on the docking plug plate. The docking plug plate is driven by the docking cylinder to set a telescopic docking action. The relay power connection probe is facing the relay weak current communication terminal of the high-voltage distribution box to be tested.

[0009] Furthermore, the test instrument is arranged at the rear side of the test bench and is electrically connected to the power connection terminal, the shunt power connection probe, and the power connection probe through wires.

[0010] Furthermore, the positioning pins are positioned on the positioning holes around the high-voltage distribution box to be tested.

[0011] Furthermore, a detachable support column is provided between the pressing plate and the lifting plate.

[0012] Compared with the prior art, the above technical solution adopted by the present invention has the following technical effects:

[0013] The high-voltage distribution box test fixture uses a positioning platform to stably deliver the high-voltage distribution box to be tested to the test area. After the lifting plate is pressed down, the power terminals and the power probes contact the power terminals to be tested one by one, which can achieve electrical conduction and enable the electrical properties of the relays, shunts and resistors of the high-voltage distribution box to be tested by the test instrument. The detection is comprehensive, highly automated, and efficient, and it is practical and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a right side top view of the high-voltage distribution box test fixture of this embodiment;

[0015] Figure 2 This is a side plan view of the lifting and pressing assembly described in this embodiment;

[0016] Figure 3 This is a side elevation view of the automatic power connection assembly of this embodiment;

[0017] Figure 4 This is a side plan view of the high-voltage distribution box to be tested according to this embodiment;

[0018] Figure 5 for Figure 3A partial enlarged view of point A in the middle;

[0019] Among them: 1-control button, 2-positioning platform, 3-high-voltage distribution box, 4-guide column, 5-lifting plate, 6-lifting cylinder, 7-test instrument, 8-power supply, 9-test bench, 10-slider rail assembly, 11-power connection block, 12-shunt power connection terminal, 13-relay weak current communication terminal, 14-current guide terminal, 15-power connection socket, 16-shunt power connection probe, 17-relay power connection probe, 18-docking board, 19-docking cylinder, 20-pressing plate, 21-support column. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely in the following by way of embodiments in conjunction with the accompanying drawings.

[0021] See also Figures 1 to 5 This embodiment provides a high-voltage distribution box test fixture, including a feed slide platform, a positioning platform 2, a lifting and pressing assembly and an automatic power connection assembly arranged on a test table 9, and a test instrument 7 that cooperates with the automatic power connection assembly to implement the test. The test instrument also includes a power supply for providing power to the high-voltage distribution box 3 to be tested.

[0022] See Figure 1 In order to stably feed the high-voltage distribution box 3 to be tested to the test bench, the feed sliding platform includes a slider and rail assembly 10 arranged in parallel on the left and right. The slider is arranged below the positioning platform 2. The upper end surface of the positioning platform 2 is provided with a positioning pin, and the four corners are provided with guide column and guide sleeve assemblies. The guide sleeves are provided at the four corners of the lifting and pressing assembly. A shunt power connection probe 16 is provided at the shunt power connection end 12 on one side of the positioning platform 2, which is facing the side of the high-voltage distribution box 3 to be tested, to achieve electrical conductivity between the two.

[0023] See Figure 2 and Figure 3 In order to achieve precise spatial docking of the high-voltage distribution box 3 to be tested that is fed into place, the lifting and pressing assembly includes a pressing plate 20, a lifting plate 5, a clamping column, a clamping spring and a lifting cylinder 6. The lifting cylinder 6 drives the lifting plate 5 to lift and lower. The four corners of the lifting plate 5 are provided with guide sleeves. After the guide sleeves cooperate with the guide columns 4, vertical lifting action is achieved. The pressing plate 20 is provided on the lower end surface of the lifting plate 5, and the lifting plate 5 is provided with several clamping columns at the current guide end 14 provided on the upper end surface of the high-voltage distribution box 3 to be tested. The lower end of the clamping column is provided with a clamping spring, and the clamping spring is sleeved with a power connection block 11. The power connection block 11 is in contact with the current guide end 14 to achieve electrical conduction.

[0024] See Figure 4 and Figure 5In order to achieve electrical conduction for all power connection terminals of the high-voltage distribution box 3 to be tested, the automatic power connection component includes a relay power connection probe 17, a docking cylinder 19, and a docking plug plate 18. The relay power connection probe 17 is set on the docking plug plate 18, and the docking plug plate 18 is driven by the docking cylinder 19 to set a telescopic docking action. The relay power connection probe 17 is facing the relay weak current communication terminal 13 of the high-voltage distribution box 3 to be tested, and is used to connect the relay to achieve power gain and loss point control.

[0025] See Figure 1 The test instrument 7 is arranged at the rear side of the test bench 9 and is electrically connected to the power terminal 11, the shunt power probe 16 and the power probe 15 through wires.

[0026] See Figure 2 and Figure 4 The positioning pins are positioned on the positioning holes around the high-voltage distribution box 3 to be tested.

[0027] See Figure 3 In order to realize the adaptation detection of high-voltage distribution boxes 3 of various specifications and models, a detachable support column 21 is provided between the pressing plate 20 and the lifting plate 5, which makes it more convenient to replace the lifting plate 5 of the adapted specifications and models, and enables the high-voltage distribution box 3 of the adapted specifications and models to be freely loaded under the lifting plate 5, so that the power connection terminal 11 and the current guiding terminal 14 can be in contact to achieve electrical conduction.

[0028] The above describes the embodiments of the present invention in detail in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes, modifications, substitutions and variations can be made without departing from the purpose of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-voltage distribution box test fixture, comprising a feed slide table, a positioning carrier (2), a lifting and pressing assembly and an automatic power connection assembly arranged on a test table (9), and a test instrument (7) for cooperating with the automatic power connection assembly to implement the test, characterized in that: The feed sliding platform includes a slider rail assembly (10) arranged in parallel on the left and right sides, the slider is arranged below the positioning platform (2), the four corners of the positioning platform (2) are provided with guide column (4) guide sleeve assemblies, the guide sleeves are arranged at the four corners of the lifting and pressing assembly, and a shunt power connection probe (16) is provided at the shunt power connection end (12) (11) on one side of the positioning platform (2) facing the side of the high-voltage distribution box (3) to be tested. The lifting and pressing assembly comprises a pressing plate, a lifting plate (5), a pressing column, a pressing spring and a lifting cylinder (6). The lifting cylinder (6) drives the lifting plate (5) to move up and down. The four corners of the lifting plate (5) are provided with guide sleeves. After the guide sleeves cooperate with the guide columns (4), vertical lifting action is achieved. The pressing plate is provided on the lower end surface of the lifting plate (5), and the lifting plate (5) is provided with a plurality of pressing columns at the current guide end (14) provided on the upper end surface of the high-voltage distribution box (3) to be tested. The lower end of the pressing column is provided with a pressing spring. The pressing spring is sleeved with a power block. The power block contacts the current guide end (14) to achieve electrical conduction. The automatic power connection assembly comprises a relay power connection probe (17), a docking cylinder (19), and a docking plug plate (18). The relay power connection probe (17) is arranged on the docking plug plate (18). The docking plug plate (18) is driven by the docking cylinder (19) to set a telescopic docking action. The relay power connection probe (17) is facing the relay weak current communication terminal (13) of the high-voltage distribution box (3) to be tested.

2. The high-voltage distribution box test fixture according to claim 1, characterized in that: The upper end surface of the positioning platform (2) is provided with positioning pins, and the positioning pins are positioned on the positioning holes around the high-voltage distribution box (3) to be tested.

3. The high-voltage distribution box test fixture according to claim 1, characterized in that: The test instrument (7) is arranged at the rear side of the test bench (9) and is electrically connected to the power connection terminal (11), the shunt power connection probe (16), and the power connection probe (15) through wires.

4. The high-voltage distribution box test fixture according to claim 1, characterized in that: A detachable support column (21) is provided between the pressing plate and the lifting plate (5).

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