Real environment simulation system for testing grounding components for electric vehicle

Abstract

The present invention relates to a real environment simulation system for testing grounding components for an electric vehicle, which is configured to test grounding components used in a motor mounted on an electrically driven hybrid vehicle or electric vehicle under the same environmental conditions as an actual electric vehicle. The present invention provides a real environment simulation system for testing grounding components for an electric vehicle, the system comprising: a base frame; a test apparatus unit, mounted on an upper portion of the base frame, for testing a grounding component; a chamber unit including a test chamber covering the grounding component to be tested by the test apparatus unit and defining a predetermined space, and a main chamber, connected to the test chamber, for providing a predetermined environmental condition to the test chamber; a component test unit fixedly mounted inside the test chamber, onto which the grounding component is mounted; a control unit including a controller for controlling operations of the test apparatus unit and the chamber unit; and a distribution box for supplying or cutting off power to the test apparatus unit, the chamber unit, and the control unit.

Description

Real-world simulation system for testing grounding components for electric vehicles

[0001] The present invention relates to a real-environment simulation system for testing grounding components for electric vehicles, which enables testing of grounding components for electric vehicles under conditions identical to the actual environment of the electric vehicle, in order to test grounding components used in motors mounted on electric-driven hybrid vehicles or electric vehicles.

[0002] Until now, most vehicles have used fossil fuels, but with the recent emergence of environmental problems caused by fine dust, efforts are continuing to reduce emissions such as soot resulting from the use of fossil fuels in automobiles. As part of these efforts, examples include requiring large vehicles that generate a lot of soot, such as trucks, to be equipped with a Diesel Particulate Filter (DPF) in their exhaust systems, or reducing the purchase costs of hybrid or electric vehicles.

[0003] Electric vehicles include pure electric vehicles (EVs), hybrid vehicles (HEVs), and plug-in hybrid electric vehicles (PHEVs). With the proliferation of hybrid or electric vehicles, the number of hybrid or electric vehicles in circulation is gradually increasing.

[0004] Furthermore, driven by global trends toward stricter environmental regulations and energy cost reductions, there is a growing demand for eco-friendly electric vehicles to replace existing products. It is anticipated that the growth of the eco-friendly electric vehicle market will continue in response to CO2 reduction, improved fuel efficiency, and tightening environmental regulations. To expand the adoption and promote the active operation of electric vehicles, there is a need for simulation devices capable of testing the performance of grounding components, such as motors, before application to vehicles, alongside the establishment of charging infrastructure.

[0005] To solve the above-mentioned problems, the present invention aims to provide a real-environment simulation system for testing grounding components for electric vehicles, which can test the durability of grounding components of an electric vehicle by configuring the grounding components mounted on the electric vehicle under conditions identical to those of the electric vehicle using a DC power source ranging from low voltage to high voltage.

[0006] To achieve the above objective, the present invention provides a real-environment simulation system for testing grounding components for electric vehicles, characterized by comprising: a base frame; a test unit mounted on the upper part of the base frame for testing grounding components; a chamber unit comprising a test chamber that forms a certain space while covering the grounding components to be tested by the test unit, and a main chamber connected to the test chamber to provide certain environmental conditions to the test chamber; a component test unit fixedly mounted inside the test chamber to which the grounding components are mounted; a control unit equipped with a controller for controlling the operation of the test unit and the chamber unit; and a power distribution box for supplying or cutting off power to the test unit, the chamber unit, and the control unit.

[0007] In the present invention, the test device unit comprises: a drive motor that rotates by power applied and supplied according to a control signal of a controller; a torque sensor installed on the rotation shaft of the drive motor to detect the torque of the rotation shaft; and a spindle connected to the rotation shaft to receive rotational force; a coupling connecting the spindle and the grounding component; an axial load drive unit mounted in front of the component test unit to apply an axial load to the grounding component mounted in the component test unit; and a lateral load drive unit that applies a lateral load to the grounding component from the bottom of the component test unit.

[0008] In the present invention, the component test section is characterized by comprising: a pair of support members mounted at regular intervals on a base frame; a pair of component mounting members each mounted on the upper side of the support members and having the grounding component mounted on the central side; an axial load transmission member mounted on one side of the support member to receive an axial load from the axial load driving member; a lateral load transmission member mounted on the center of the grounding component to receive a lateral load from the lateral load driving member; and a pair of temperature sensor members mounted on the upper side of the component mounting members to measure the temperature of the test bearing of the grounding component.

[0009] In the present invention, the grounding component is characterized by comprising: a component rotation shaft connected to a spindle and rotating; and a pair of test bearings mounted on both sides of the component rotation shaft and fixedly mounted to the component mounting portion.

[0010] In the present invention, the axial load driving unit comprises: a first servo motor; a first reducer that receives the rotational force of the first servo motor and generates torque; a first linear actuator connected to the first reducer and moving forward and backward; a first load cell connected to the first linear actuator and detecting the axial load applied by the first linear actuator; and a contact end connected to the first load cell and applying a constant axial load to the axial load transmission unit.

[0011] In the present invention, the lateral load driving unit comprises: a second servo motor; a second reducer that receives the rotational force of the second servo motor and generates torque; a second linear actuator connected to the second reducer and moving forward and backward; a second load cell connected to the second linear actuator and detecting a lateral load applied by the second linear actuator; and a driving actuator, the lower end of which is connected to the second load cell and the upper end of which is connected to the lateral load transmission unit to apply a lateral load to the grounding component.

[0012] In the present invention, each component mounting part comprises: an outer body part having a through hole formed in the center and a joint hole formed on the upper side for fastening a joint for mounting a temperature sensor; an inner body part consisting of a main body mounted in the through hole of the outer body part and having a mounting hole formed in the center for inserting and mounting the grounding component, and a flange formed at one end of the main body part for fixing to the outer body part with a bolt; a fixing ring part consisting of a first fixing ring fixedly mounted on one side of the inner body part and a second fixing ring fixedly mounted on the other side of the inner body part for sealing the test bearing portion of the grounding component located in the inner body part; and an shaft grounding ring installed on the outer surface of the second fixing ring while in contact with the outer circumference of the component rotation shaft; and the pair of component mounting parts are characterized by being installed in a corresponding manner so that each of the above components faces each other.

[0013] In the present invention, the shaft load transmission member is characterized by comprising a pair of shaft rods mounted on one side of the upper part of a support member, and a connecting end connecting the pair of shaft rods to each other at one end of the shaft rods.

[0014] In the present invention, the lateral load transfer unit is characterized by being composed of a U-bolt to which the upper end of a driving actuator is connected, and a support bearing fixedly mounted on the inside of the U-bolt.

[0015] In the present invention, the temperature sensor unit is characterized by comprising a joint having a hollow formed therein that is installed in a joint hole, and a temperature sensor that is inserted through the joint and comes into contact with the test bearing.

[0016] In the present invention, the test chamber is characterized by comprising a fixed test chamber, a chamber door connected to the fixed test chamber and opened, and a sight glass formed on the chamber door to monitor the test of the grounding component.

[0017] The real-world simulation system for testing grounding components for electric vehicles according to the present invention has the advantage of accurately determining the durability of grounding components because it tests under conditions of actual vehicles, including axle load, lateral load, and temperature conditions.

[0018] In addition, the real-environment simulation system for testing grounding components for electric vehicles according to the present invention has the advantage of accurately determining the behavior of the bearing during high-speed operation because it is equipped with a temperature sensor to measure the temperature of the mounted test bearing.

[0019] In addition, the real-environment simulation system for testing grounding components for electric vehicles according to the present invention is equipped with an axle grounding ring, so the induced current generated by the operation of the motor can be discharged through the grounding ring, thereby having the advantage of preventing damage to the bearing caused by arc generation due to the accumulation of induced current.

[0020] In addition, the real-environment simulation system for testing grounding components for electric vehicles according to the present invention has the advantage of being able to monitor the testing process because a sight glass is formed in the test chamber.

[0021] FIG. 1 is an overall perspective view of a real-world environment simulation system for testing grounding components for electric vehicles according to the present invention.

[0022] FIG. 2 is an overall perspective view of a real-world environment simulation system for testing grounding components for electric vehicles according to the present invention with the door removed.

[0023] FIG. 3 is a perspective view of a fixed test chamber among the test chambers of a real environment simulation system for testing grounding components for electric vehicles according to the present invention.

[0024] FIG. 4 is a side view of the test device section and the component test section of the system according to the present invention.

[0025] FIG. 5 is a perspective view of a grounding component used in a system according to the present invention.

[0026] FIG. 6 is a cross-sectional view of the test device section and the component test section of the system according to the present invention.

[0027] FIG. 7 is a perspective view of the component test section of the system according to the present invention.

[0028] FIG. 8 is a cross-sectional view of the part test section of FIG. 7.

[0029] FIG. 9 is an exploded view of the component test section of FIG. 7.

[0030] Embodiments of the present invention, in which the above objectives can be specifically realized, will be described in detail below with reference to the attached drawings. In describing these embodiments, the same names and reference numerals are used for identical components, and additional explanations thereof will be omitted.

[0031] FIG. 1 is an overall perspective view of a real-world environment simulation system for testing grounding components for electric vehicles according to the present invention. Referring to FIG. 1, the real-world environment simulation system (1) for testing grounding components for electric vehicles according to the present invention comprises a base frame (10), a test device unit (30) mounted on the upper part of the base frame (10) for testing grounding components (100), a chamber unit (20) for creating a certain environment for grounding components (100) being tested by the test device unit (30), a component test unit (40) installed inside the chamber unit (20), a control unit (50) equipped with a controller for driving the test device unit (30) and the chamber unit (20), and a power distribution box (60) for supplying power. Below, each component will be examined in detail.

[0032] With reference to FIGS. 1 to 3, the configuration of the base frame (10) and the chamber section (20) will be described in detail. The base frame (10) consists of a frame body (11), a top plate (12) installed on the upper part of the frame body (11), a plurality of doors (13) mounted on the front and rear sides of the frame body, a storage space (14) formed by the frame body (11) and the doors (13), a base (15) mounted on the bottom side of the frame body (11), and casters (16) for movement. A top plate (12) is mounted on the upper part of the frame body (11), and the top plate (12) and the frame body (11) are connected by a vibration-damping joint (17) made of vibration-damping rubber to prevent vibration caused by the force acting on the top plate. A test chamber (22), a test device section (30), and a component test section (40) are mounted on the top plate (12). The test chamber (22) is connected to the main chamber (21) and receives the external air conditions applied to the electric vehicle through the main chamber (21). Accordingly, the main chamber (21) receives external air conditions to the test chamber (22) within a certain temperature range. The temperature range is formed to be -40 to 150°C. Temperature changes in the main chamber (21) are controlled by the control unit (50), and the main chamber (21) may be equipped with a refrigerator (not shown) or a heat pump (not shown). The test chamber (22) consists of a fixed test chamber (221) fixed to the top plate (12) and a chamber door (222) connected to the fixed test chamber (221) so as to be openable. A sight glass (223) is formed on the chamber door (222) to allow monitoring of the interior of the test chamber (22). The fixed test chamber (221) will be described in detail with reference to FIG. 3.The fixed test chamber (221) has a main chamber connection hole (2211) formed on the back side that connects to the main chamber (21), a shaft installation hole (2215) formed on one side so that a pair of shafts are installed, a shaft installation hole (2213) formed on the other side so that a spindle of a rotary drive unit (30) can be inserted, and on the bottom surface, a support unit installation hole (2212) for installing a support unit (41) of a component test unit (40) and an actuator installation hole (2214) formed so that a drive actuator (345) of a lateral load drive unit (34) connected to a lateral load transmission unit (44) can be inserted.

[0033] FIGS. 4 to 6 are drawings of the configuration of the test device section (30) and the component test section (40). As shown in the drawings, the test device section (30) is composed of a rotary drive section (31) that provides torque to the grounding component (100), a coupling (32) that connects the rotary drive section (31) to the grounding component (100), an axial load drive section (33) that provides an axial load to the grounding component (100) from one side of the grounding component (100), and a lateral load drive section (34) that provides a lateral load to the grounding component (100) from the bottom of the grounding component (100). The rotary drive unit (31) is composed of a motor (311), a torque sensor (312) connected to the motor (311) to sense the torque generated by the motor (311), and a spindle (313) connected to the torque sensor (312). The shaft of the motor (311) and the torque sensor (312) are connected by a coupling (315), and the torque sensor (312) and the spindle (313) are also connected to each other by a coupling (315). The spindle (313) is rotated while being fixed in position by a spindle support (314) that supports it while fixing its position. The motor (311) is supported by a motor support (316), and the torque sensor (312) and the spindle (313) are fixed to the top plate (12) while being supported by a main support (317). The motor support (316) is also fixed to the main support (317) and is fixed to the top plate (12) by the main support (317). The axial load drive unit (33) is composed of a first servo motor (331), a first reducer (332) that receives the rotational force of the first servo motor (331) and generates torque, a first linear actuator (333) that is connected to the first reducer (332) and moves forward and backward, a first load cell (334) that is connected to the first linear actuator (333) and detects the axial load applied by the first linear actuator (333), and a contact end (335) that is connected to the first load cell (334) and applies a constant axial load to the axial load transmission unit (43). The first servo motor (331) rotates when power is applied, and the rotational force of the first servo motor (331) is transmitted to the first reducer (332).The first reducer (332) reduces the rotational force and transmits a constant torque to the first linear actuator (333). The reduction ratio of the rotational force transmitted from the first servo motor (331) in the first reducer (332) can be set to 10:1, and the corresponding torque can be transmitted to the first linear actuator (333). When the torque is transmitted, linear motion of the first linear actuator (333) is performed at a reduced speed. The lateral load drive unit (34) is composed of a second servo motor (341), a second reducer (342) that receives the rotational force of the second servo motor (341) and generates torque, a second linear actuator (343) that is connected to the second reducer (342) and moves forward and backward, a second load cell (344) that is connected to the second linear actuator (343) and detects the lateral load applied by the second linear actuator (343), and a drive actuator (345) that has its lower end connected to the second load cell (344) and its upper end connected to the lateral load transmission unit (44) to apply a lateral load to the grounding component (100). The second servo motor (341) transmits rotational force to the second reducer (342). The second reducer (342) reduces the rotational force and transmits a constant torque to the second linear actuator (343). The reduction ratio of the rotational force transmitted from the second servo motor (341) in the second reducer (342) can be set to 10:1, and the torque can be transmitted to the second linear actuator (343) accordingly. When the torque is transmitted, linear motion of the second linear actuator (343) is performed at a reduced speed.

[0034] FIG. 5 illustrates a grounding component (100). The grounding component (100) consists of a component rotation shaft (101) that rotates in connection with a spindle (313), a pair of test bearings (102) that are mounted on both sides of the component rotation shaft (101) and fixedly mounted to a component mounting part (40), and a bearing fixing ring (103) that is press-fitted to fix the position of the test bearings (102) on the component rotation shaft (101). The component rotation shaft (101) comprises an end portion (1011) fixed by a fixing ring portion, a bearing fixing ring mounting portion (1012) formed by expanding from the end portion, a test bearing mounting portion (1013) formed by expanding from the bearing fixing ring mounting portion, a support bearing mounting portion (1014) formed by expanding from the test bearing mounting portion (1013), and a centering portion (1015) formed between the two support bearing mounting portions (1014) and protruding to hold the center of the installation.

[0035] FIGS. 7 to 9 illustrate a component test section (40). The component test section (40) comprises a pair of support members (41) mounted at regular intervals on a base frame (10), a pair of component mounting members (42) each mounted on the upper side of the support members (41) and having a grounding component (100) mounted on the central side, an axial load transmission member (43) mounted on one side of the support member (41) and receiving an axial load from an axial load driving member (33), a lateral load transmission member (44) mounted on the center of the grounding component (100) and receiving a lateral load from a lateral load driving member (34), and a pair of temperature sensor members (45) mounted on the upper side of the component mounting members (42) to measure the temperature of the test bearing (102) of the grounding component (100). The support member (41) consists of a pair of lower supports (411) mounted on the top plate (12) and protruding into the interior of the test chamber (22), and an upper support plate (412) installed on the upper surface of the pair of lower supports (411). A component mounting section (42) is installed on the upper support plate (412). The component mounting section (42) is formed as a pair to support and fix both sides of the grounding component (100). The pair of component mounting sections (42) are installed in a corresponding configuration on both sides. That is, the component mounting sections on both sides are installed so that corresponding configurations face each other. When examining the configuration of the component mounting section, each component mounting section (42) is composed of an outer body section (421), an inner body section (422) mounted on the outer body section (421), a fixing ring section (423) installed on both sides of the mounting hole (4223) of the inner body section (422), and a shaft grounding ring (424) mounted on the other side of the fixing ring section (423) for grounding the component rotation shaft (101). The outer body section (421) is composed of a lower body (4211) and an upper body (4212) that is coupled with the lower body (4211) to form a through hole (4214) on the inside. A joint hole (4213) is provided on the upper part of the upper body (4212) so that a temperature sensor section (45) can be mounted thereon. The inner body part (422) is mounted in the through hole (4214) of the outer body part (421).The inner body part (422) is composed of a main body (4221) having a mounting hole (4223) formed in the center for inserting and mounting a grounding component (100), and a flange (4222) formed at one end of the main body (4221) to be fixed to the outer body part (421) with a bolt. The fixing ring part (423) is installed to seal the front and rear of the inner body part (422). The fixing ring part (423) is composed of a one-sided fixing ring (423a) fixedly mounted on one side of the inner body part (422) and a other-sided fixing ring (423b) fixedly mounted on the other side of the inner body part (422). The fixing ring part (423) is installed to seal the test bearing (102) by means of the one-sided fixing ring (423a) and the other-sided fixing ring (423b). Since the test bearing (102) rotates at high speed, a large amount of heat is generated due to friction. Because a lubricant is filled into the test bearing (102) to generate heat and lubricate, the one-sided fixing ring (423a) and the other-sided fixing ring (423b) serve to seal the lubricant. Additionally, to ground the induced current caused by the rotation of the bearing, a shaft grounding ring (424) is installed on the outer side of the other-sided fixing ring (423b) and contacts the component rotation shaft (101) to remove the induced current induced in the component rotation shaft (101). The one-sided fixing ring (423a) consists of a one-sided mounting ring (4231a) mounted on a step (4224) formed on the main body (4221) inside the flange (4222), and a one-sided packing ring (4232a) that is press-fitted inside the one-sided mounting ring (4231a). The other side fixing ring (423b) consists of an other side mounting ring (4231b) mounted on the other side of the main body (4221) and an other side packing ring (4232b) that is press-fitted to the other side mounting ring (4231b). An axial grounding ring (424) is mounted on the other side of the other side mounting ring (4231b). Each of the pair of component mounting parts (42) is installed so that corresponding components face each other, and the inner body part (422) is installed on the outer body part (421) so that the corresponding components, the flanges (4222), face each other.Accordingly, the remaining components, the one-sided fixing ring (423a) and the other-sided fixing ring (423b), are each installed at corresponding positions, and a shaft grounding ring (424) is each installed on the other-sided fixing ring (423b) to form a pair. Accordingly, the shaft grounding ring (424) grounds the induced current caused by the rotation of the bearing on both sides of the component rotation shaft (101). The shaft load transmission unit (43) consists of a pair of shaft rods (431) mounted on one side of the upper part of the support unit (41), and a connecting end (432) that connects the pair of shaft rods (431) to each other at one end of the shaft rods (431). The shaft load is transmitted to the connecting end (432) by the shaft load driving unit (33). The lateral load transfer section (44) consists of a U-bolt (441) to which the upper end of the driving actuator (345) is connected, and a support bearing (442) fixedly mounted inside the U-bolt (441). A connecting end (3451) is provided at the upper end of the driving actuator (345) to which a through hole is formed so that the U-bolt (441) can be inserted, and the bolt of the U-bolt (441) is inserted and fixed into the connecting end (3451) to receive the lateral load from the driving actuator (345). The support bearing (442) is mounted on both sides of the centering (1015) formed in the center of the component rotation shaft (101) to receive the lateral load from the driving actuator (345). The temperature sensor (45) consists of a joint (451) that is fastened to a joint hole (4213) formed on the upper side of the upper body (4212) of the outer body part (421), and a temperature sensor (452) that contacts a test bearing (102) mounted on the inner side of the inner body part (422) through the joint (451). The temperature sensor (452) senses heat generated by frictional force in the test bearing (102) as the component rotation shaft (101) rotates.

[0036] The control unit (50) is equipped with a controller (51), and the controller (51) controls the driving of the chamber unit (20) and the driving of the rotational driving unit (31), the axial load driving unit (33), and the lateral load driving unit (34). The controller (51) controls the rotational speed of the motor (311) of the rotational driving unit (31), controls the rotational speed of the first servo motor (331) of the axial load driving unit (33), and controls the rotational speed of the second servo motor (341) of the lateral load driving unit (34). Accordingly, the torque, axial load, and lateral load applied to the grounding component (100) can be controlled.

[0037] The power distribution box (60) supplies power necessary for driving the chamber section (20) and the test device section (30).

[0038] It is obvious to those skilled in the art that the present invention is not limited to the above embodiments and can be implemented with various modifications and variations within the scope of the technical essence of the present invention.

[0039] The present invention relates to a real-world environment simulation system that enables testing of grounding components for electric vehicles under conditions identical to the actual environment of the electric vehicle, for the purpose of testing grounding components used in motors mounted on electric-driven hybrid vehicles or electric vehicles, and is an invention with high industrial applicability.

Claims

1. In a real-world environment simulation system for testing grounding components for electric vehicles, Base frame; A test device unit mounted on the upper part of the above base frame for testing grounding components; A chamber section comprising a test chamber that forms a certain space while covering a grounding component being tested by a test device section, and a main chamber connected to the test chamber to provide certain environmental conditions to the test chamber; A component test section fixedly mounted inside the above test chamber and on which the grounding component is mounted; A control unit equipped with a controller for controlling the operation of the test device unit and the chamber unit; and A power distribution box for supplying or cutting off power to the above test device unit, the above chamber unit, and the above control unit; A real-environment simulation system for testing grounding components for electric vehicles, characterized by being composed of 2. In Paragraph 1, The above test device unit is, A rotary drive unit comprising a drive motor that rotates by power applied and supplied according to a control signal of the above controller, a torque sensor installed on the rotation shaft of the drive motor to detect the torque of the rotation shaft, and a spindle connected to the rotation shaft to receive rotational force; A coupling connecting the above spindle and the above ground component; An axial load driving unit mounted in front of the above-mentioned component test unit and applying an axial load to a grounding component mounted on the above-mentioned component test unit; and A lateral load driving unit that applies a lateral load to the grounding component at the lower part of the component test unit; A real-environment simulation system for testing grounding components for electric vehicles, characterized by being composed of 3. In Paragraph 2, The above-mentioned component test unit is, A pair of support members mounted at regular intervals on the base frame above; A pair of component mounting parts, each mounted on the upper end of the support member and having the grounding component mounted on the central side; An axle load transmission unit mounted on the support member on one side and receiving an axle load from the axle load driving unit; A lateral load transfer member mounted at the center of the grounding component and receiving a lateral load from the lateral load transfer member; and A pair of temperature sensor units mounted on the upper part of the component mounting part to measure the test bearing temperature of the grounding component; A real-environment simulation system for testing grounding components for electric vehicles, characterized by being composed of 4. In Paragraph 3, The above grounding component is, A component rotation axis connected to and rotating with the above spindle; and A pair of test bearings mounted on both sides of the component rotation shaft and fixedly mounted to the component mounting part; A real-environment simulation system for testing grounding components for electric vehicles, characterized by being composed of 5. In Paragraph 4, The above-mentioned shaft drive unit is, First servo motor; A first reducer that receives the rotational force of the first servo motor and generates torque; A first linear actuator connected to the first reducer and moving back and forth; A first load cell connected to the first linear actuator and detecting an axial load applied by the first linear actuator; and A contact end connected to the first load cell and applying a constant axial load to the axial load transmission part; A real-environment simulation system for testing grounding components for electric vehicles, characterized by being composed of 6. In Paragraph 5, The above lateral load driving unit is, Second servo motor; A second reducer that receives the rotational force of the second servo motor and generates torque; A second linear actuator connected to the second reducer and moving back and forth; A second load cell connected to the second linear actuator and detecting a lateral load applied by the second linear actuator; and A driving actuator that applies a lateral load to the grounding component, with the lower end connected to the second load cell and the upper end connected to the lateral load driving unit; A real-environment simulation system for testing grounding components for electric vehicles, characterized by being composed of 7. In Paragraph 6, Each of the above-mentioned component mounting parts is, An outer body part having a through hole formed in the center and a joint hole formed at the top for fastening a joint for mounting a temperature sensor; An inner body part comprising a main body that is mounted in a through hole of the outer body part and has a mounting hole formed in the center for inserting and mounting the grounding component, and a flange formed at one end of the main body for fixing to the outer body part with a bolt; A fixing ring portion comprising a one-sided fixing ring fixedly mounted on one side of the inner body portion and a other-sided fixing ring fixedly mounted on the other side of the inner body portion to seal the test bearing portion of the grounding component located in the inner body portion; and It is composed of an axle grounding ring installed on the outer surface of the other fixing ring while in contact with the outer surface of the above-mentioned component rotation shaft, and A real-environment simulation system for testing grounding components for electric vehicles, characterized in that the above-mentioned pair of component mounting parts are installed in correspondence so that each of the above-mentioned components faces each other.

8. In Paragraph 7, The above-mentioned celebratory delivery unit is, A real-environment simulation system for testing grounding components for electric vehicles, characterized by comprising a pair of shafts mounted on one side of the upper portion of the support member and a connecting end connecting the pair of shafts to each other at one end of the shafts.

9. In Paragraph 8, The above lateral load transfer unit is, A real-environment simulation system for testing grounding components for electric vehicles, characterized by comprising a U-bolt to which the upper end of the above-mentioned driving actuator is connected, and a support bearing fixedly mounted inside the U-bolt.

10. In Paragraph 9, The above temperature sensor unit is, A real-environment simulation system for testing grounding components for electric vehicles, characterized by comprising a joint with a hollow formed therein installed in the joint hole, and a temperature sensor inserted through the joint and in contact with the test bearing.

11. In Paragraph 1 The above test chamber is, A real-environment simulation system for testing grounding components for electric vehicles, characterized by comprising a fixed test chamber, a chamber door connected to and opened by the fixed test chamber, and a sight glass formed on the chamber door to monitor the test of the grounding component.

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