Ice water impact test device for high-voltage electrical component of new energy automobile

Abstract

The utility model relates to an ice water impact test device for a high-voltage electrical component of a new energy automobile. The ice water impact test device comprises an ice water impact box, a lifting basket, a nozzle, a cold water box, a water cooler, a pipeline, a thermal insulation layer and a cover plate, a test hole is formed in the top of a box body of the ice water impact box and used for connecting a high-voltage line of a tested sample; the box body is of an up-down double-door structure; the lower half part of the box body is a sealed box body and is provided with a liquid pipeline hole which is convenient for liquid in the cold water tank to flow in; a nozzle is arranged at the upper part in the box body; the lifting basket is mounted in the ice water impact test box and has a lifting function, and the outlet end of the cold water tank is connected with the ice water impact box nozzle and the bottom box body of the ice water impact box through pipelines respectively; the inlet end of the cold water tank is connected with the cooling-water machine through a pipeline, and the cooling-water machine provides cooling water for the cold water tank. The insulating layer is attached to the bottom of the basket; the cover plate is installed on the bottom of the lifting basket. The problem that potential safety hazards exist in the ice water impact on-load test is solved. And a water splashing test and an immersion test can be realized.

Description

Technical Field

[0001] The utility model relates to a testing device, in particular to an ice water impact testing device for high-voltage electrical components of new energy vehicles. Background Art

[0002] The ice water impact test in the ISO 16750-4 standard is a specific test conducted on road vehicles. Its purpose is to evaluate whether the mechanical structure of the sample will fail due to thermal shock when the splash zone parts of the vehicle wade through water.

[0003] Ice water shock test of high-voltage electrical components is widely used in automobile or automobile parts manufacturing, high-speed rail vehicle or component manufacturing, ship equipment manufacturing, etc. With the rapid development of new energy high-voltage electrical technology, new energy high-voltage electrical technology has been widely used in many fields, including new energy vehicles, high-speed rail, etc. Ice water shock test is an important project of new energy high-voltage electrical testing. At present, the safety protection mechanism of the test equipment is imperfect, and the safety of the test process cannot be guaranteed. It is impossible to better test the leakage protection ability of new energy vehicle DC high-voltage electrical appliances when they are exposed to ice and snow. Once leakage occurs during the test, it will cause great harm to the test equipment and operators. Summary of the invention

[0004] Aiming at the hidden danger of high-voltage discharge caused by failure of high-voltage components to the safety of equipment and personnel operation during ice-water shock load test of high-voltage components of new energy vehicles, an ice-water shock test device for high-voltage electrical components of new energy vehicles is proposed.

[0005] The technical solution of the utility model is:

[0006] An ice water impact test device for high-voltage electrical components of new energy vehicles, comprising an ice water impact box, a basket, a nozzle, a cold water box, a chiller, a pipeline, an insulation layer, and a cover plate;

[0007] The ice water impact box has a test hole on the top of the box body for connecting the high-voltage wire of the sample to be tested; the box body has a double door structure; the lower half of the box body is a sealed box body, and a liquid pipeline hole is opened to facilitate the flow of liquid from the cold water tank; a nozzle is installed in the upper part of the box body;

[0008] The basket is installed inside the ice water impact box, and the basket has a lifting function;

[0009] The outlet end of the cold water tank is connected to the nozzle of the ice water impact tank and the bottom box of the ice water impact tank through pipelines respectively; the inlet end of the cold water tank is connected to the chiller through pipelines, and the chiller provides cooling water for it;

[0010] The insulation layer is attached to the bottom of the basket;

[0011] The cover plate is installed on the bottom of the basket.

[0012] Furthermore, the ice water shock box has the function of setting and adjusting temperature and humidity parameters, is airtight, has evenly divided upper and lower spaces, and has an insulating coating sprayed on the inner wall of the box.

[0013] Furthermore, the bottom of the basket is hollow, and there is an insulation layer on the bottom of the basket. The basket as a whole is a frame structure. The overall size of the basket is smaller than the inside of the box. The length and width of the bottom of the basket are consistent with the length and width of the inside of the ice water impact box. The height of the basket is 1 / 2 of the height of the inside of the ice water impact box, and a sample placement position is reserved on the same side as the ice water impact box door; the basket material is high-strength insulating plastic.

[0014] Furthermore, the bottom of the basket is provided with an insulation layer which is larger than the bottom of the basket and has the same length and width as the ice water impact box. The bottom of the basket is surrounded by an insulation layer in contact with the inside of the box, and a cover plate which can be flipped up less than 90° is provided at the hollow part.

[0015] Furthermore, the cold water tank is provided with a stirring device, which can achieve uniform mixing of the liquid in the cold water tank, and the stirring device can be turned off and the cold water provided by the chiller can be directly added after cleaning the water tank.

[0016] Furthermore, the cold water tank outlet has a switch function, which can supply the cold water tank liquid to the nozzle to spray the liquid out or supply the cold water tank liquid to the bottom of the ice water impact tank to fill the cold water tank liquid with ice water and flush the bottom space.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model can realize two tests: water splash test and immersion test;

[0019] 2. The utility model can realize two tests, water splash test and immersion test, simulating the normal working state of high-voltage components;

[0020] 3. The utility model can effectively protect the test equipment and operators when the sample fails and discharges through the insulating coating inside the ice water impact box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall isometric structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the water splash test in Example 1 of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the immersion test in Example 2 of the utility model;

[0024] Reference numerals:

[0025] 1. Ice water impact box; 2. Lifting basket; 3. Nozzle; 4. Cold water tank; 5. Chiller; 6. Pipeline; 7. Insulation layer; 8. Cover plate. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0027] An ice water impact test device for high-voltage electrical components of new energy vehicles comprises an ice water impact box, a basket, a nozzle, a cold water box, a chiller, a pipeline, an insulation layer, and a cover plate.

[0028] The ice water shock box has the function of setting and adjusting temperature and humidity parameters; the inner wall of the box is sprayed with an insulating coating; there is a test hole on the top of the box for connecting the high-voltage line of the sample to be tested; the box has a double door structure; the lower half of the box is a sealed box with a liquid pipe hole to facilitate the flow of liquid from the cold water tank; a nozzle is installed on the upper part of the box.

[0029] The lifting basket is installed inside the ice water impact box. The lifting basket has a lifting function. The lifting basket material is high-strength insulating plastic. The length and width of the bottom of the lifting basket are consistent with the length and width of the inside of the ice water impact box.

[0030] The outlet end of the cold water tank is connected to the nozzle of the ice water impact box and the bottom box of the ice water impact box through a pipe; there is a stirring device in the cold water tank to ensure the uniformity of the liquid in the cold water tank; the inlet end of the cold water tank is connected to the chiller through a pipe, and the chiller provides cooling water for it.

[0031] The chiller is connected to the cold water tank inlet through a pipeline.

[0032] The utility model is further configured as follows: the ice-water impact box is a double-door structure, and the ice-water impact box is airtight, and the upper and lower spaces are evenly divided.

[0033] The utility model is further configured as follows: the bottom of the basket is hollowed out, the bottom surface of the basket is provided with an insulation layer, the basket as a whole is a frame structure, the overall size of the basket is smaller than the interior of the box, the height of the basket is 1 / 2 of the height of the interior of the ice water impact box, and a sample placement position is reserved on the same side as the ice water impact box door.

[0034] The utility model is further configured as follows: a heat preservation layer larger than the bottom of the basket and equal in length and width to the ice water impact box is attached to the bottom of the basket, a soft heat preservation layer is arranged around the bottom of the basket in contact with the inside of the box, and a cover plate which can be flipped up less than 90 degrees is arranged at the hollow part.

[0035] Through the above technical solution, it can be achieved that when the basket is placed still on the upper part of the box body, the cover plate at the hollow part of the basket can cover the hollow part, so that the bottom of the basket has a heat preservation function; when the upper part of the box body moves to the lower part of the box body, the body fluid pressure at the lower part of the box body can open the cover plate at the hollow part of the basket so that the ice water impact box liquid can enter the basket.

[0036] Through the above technical solution, when the sample is placed in the basket for testing, the basket and the sample can move up and down in the ice water impact box, and when the basket is at the bottom of the ice water impact box, it can ensure that the sample and the basket can be immersed in the bottom of the ice water impact box filled with ice water.

[0037] The utility model is further configured as follows: a stirring device is installed in the cold water tank, so that the Arizona powder and water can be evenly mixed, and the stirring device can be turned off and the water tank can be cleaned and then the cold water provided by the chiller can be directly added.

[0038] Through the above scheme, the nozzle can spray a mixed liquid of Arizona powder and water or pure water.

[0039] The utility model is further configured as follows: the cold water tank outlet has a switch switching function, which can supply the cold water tank liquid to the nozzle to spray the liquid out or supply the cold water tank liquid to the bottom of the ice water impact tank to fill the cold water tank liquid with ice water and flush the bottom space.

[0040] Through the above scheme, when the basket is placed in the upper part of the ice water impact box, the liquid in the cold water tank can be sprayed out by the nozzle to realize the water splash test; when the basket is placed at the bottom of the ice water impact box, the immersion test can be realized; when the basket is placed in the upper part of the ice water impact box, the nozzle is closed, and the upper part of the ice water impact box can adjust the temperature inside the box.

[0041] The following is combined with Figure 1 To Attachment Figure 3 The utility model is described in further detail.

[0042] An ice water impact test device for high-voltage electrical components of new energy vehicles comprises an ice water impact box 1, a basket 2, a nozzle 3, a cold water box 4, a chiller 5, a pipeline 6, an insulation layer 7, and a cover plate 8.

[0043] Example 1: Water splash test

[0044] The sample is placed in the basket 2, and the sample-loaded high-voltage line is led out to the test power supply through the hole at the top of the ice water impact box 1. The basket 2 is located on the upper part of the ice water impact box 1, the cover 8 is in a closed state, and the water outlet end of the cold water tank 4 is switched to be connected to the nozzle 3.

[0045] The chiller 5 prepares cold water and supplies the cold water to the cold water tank 4. The cold water tank 4 stirs the liquid in the tank until it is uniform, and sprays the liquid in the cold water tank 4 to the test sample through the nozzle 3 for testing.

[0046] Example 2: Immersion Test

[0047] The sample is placed in the basket 2, and the sample-loaded high-voltage line is led out to the test power supply through the hole at the top of the ice-water impact box 1. The basket 2 is on the upper part of the ice-water impact box 1, the cover 8 is in the open state, the water outlet of the cold water tank 4 is switched to be connected to the lower hole of the ice-water impact box 1, and the upper part of the ice-water impact box 1 is in a high-temperature mode.

[0048] The chiller 5 prepares cold water and supplies the cold water to the cold water tank 4. The cold water tank 4 stirs the liquid in the tank until it is uniform. After the liquid in the cold water tank 4 fills the lower space of the ice water impact box 1 through the lower hole of the ice water impact box 1, the high temperature on the upper part of the ice water impact box 1 ends, and the basket descends to the bottom of the ice water impact box 1, and the sample is immersed in the bottom of the ice water impact box 1 for testing.

[0049] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An ice water impact test device for high-voltage electrical components of new energy vehicles, characterized in that: It comprises an ice water impact box (1), a basket (2), a nozzle (3), a cold water box (4), a cold water machine (5), a pipeline (6), a thermal insulation layer (7), and a cover plate (8); The ice water impact box (1) has a test hole on the top of the box body for connecting the high-voltage wire of the sample to be tested; the box body has a double door structure; the lower half of the box body is a sealed box body and has a liquid pipeline hole to facilitate the flow of liquid from the cold water tank; a nozzle is installed in the upper part of the box body; The basket (2) is installed inside the ice water impact box (1), and has a lifting function; The outlet end of the cold water tank (4) is connected to the ice water impact tank nozzle (3) and the bottom box body of the ice water impact tank (1) through a pipeline (6) respectively; the inlet end of the cold water tank (4) is connected to a chiller (5) through a pipeline (6), and the chiller (5) provides cooling water for it; The heat-insulating layer (7) is attached to the bottom of the basket (2); The cover plate (8) is installed on the bottom of the basket (2).

2. The ice water impact test device for high-voltage electrical components of new energy vehicles according to claim 1 is characterized in that: The ice water impact box (1) has the function of setting and adjusting temperature and humidity parameters, is airtight, has evenly divided upper and lower spaces, and has an inner wall of the box sprayed with an insulating coating.

3. The ice water impact test device for high-voltage electrical components of new energy vehicles according to claim 1 is characterized in that: The bottom of the basket (2) is hollowed out, and the bottom surface of the basket (2) is provided with an insulation layer (7). The basket (2) is a frame structure as a whole. The overall size of the basket (2) is smaller than the interior of the box body. The length and width of the bottom of the basket (2) are consistent with the length and width of the interior of the ice water impact box (1). The height of the basket (2) is 1 / 2 of the height of the interior of the ice water impact box (1), and a sample placement position is reserved on the same side as the door of the ice water impact box (1); the material of the basket (2) is high-strength insulating plastic.

4. The ice water impact test device for high-voltage electrical components of new energy vehicles according to claim 1 is characterized in that: The bottom of the basket (2) is provided with a heat-insulating layer (7) which is larger than the bottom of the basket (2) and has the same length and width as the ice water impact box (1). The bottom of the basket (2) is surrounded by the heat-insulating layer (7) which is in contact with the inside of the box, and a cover plate (8) which can be turned up by less than 90 degrees is provided at the hollow part.

5. The ice water impact test device for high-voltage electrical components of new energy vehicles according to claim 1 is characterized in that: The cold water tank (4) is equipped with a stirring device, which can achieve uniform mixing of the liquid in the cold water tank. After the stirring device is turned off and the water tank is cleaned, cold water provided by the chiller (5) is directly added to achieve the nozzle (3) spraying pure water.

6. The ice water impact test device for high-voltage electrical components of new energy vehicles according to claim 1 is characterized in that: The outlet of the cold water tank (4) has a switch function, which can realize the supply of liquid in the cold water tank (4) to the nozzle (3) to spray the liquid out, or supply the liquid in the cold water tank (4) to the bottom of the ice water impact box (1) to fill the cold water tank with ice water and flush the bottom space.

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